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DEVELOPMENT OF AN INTEGRATED CATALYTIC REFORMING AND HYDROREFINING PROCESS FOR PRODUCING BIO-JET FUEL FROM BIO-OILS PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (5): 1-9.   Abstract （208）      PDF（pc） （1305KB）（126）       Knowledge map    Save As a renewable resource that is expected to completely replace petroleum based jet fuel in the future, bio-jet fuel has become increasingly important to the aviation industry. At present, the production of jet fuel from bio-oil via HEFA technology has achieved industrial application. Aiming at the problems of complex pretreatment of raw materials and single component of jet fuel in the existing HEFA technology, based on the molecular structure characteristics of bio-oils, the molecular structure of fatty acid methyl ester was catalytically reformed on a special molecular sieve catalyst, so that it was partially converted into aromatics and naphthenes. The catalytic reforming index (CRI) was used to measure the degree of hydrogen transfer and cyclization reactions. Small scall experiments were carried out to obtain the middle distillate rich in aromatics and naphthenes. The middle distillate was hydrotreated to obtain the bio-kerosene rich in aromatics and naphthenes. The experimental results showed that after the fatty acid methyl ester was treated by the integrated technology of catalytic reforming and hydrofining, the yield of bio-jet fuel was more than 65%, the yield of light olefins was about 10%, the net calorific value of bio-jet fuel was 45 MJ/kg, the freezing point was less than -65 ℃, and its density was close to that of petroleum based jet fuel. Reference | Related Articles | Metrics | Comments（0）

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CONCEPTION AND EXPLORATION OF TECHNICAL PATHWAYS FOR LIGHT HYDROCARBON AND NAPHTHA CONVERSION UNDER THE CONTEXT OF “OIL REDUCTION AND CHEMICALS INCREASE” PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 1-8.   Abstract （527）      PDF（pc） （1153KB）（121）       Knowledge map    Save The challenges and opportunities faced by existing light hydrocarbon and naphtha processing technologies under the “oil reduction and chemicals increase” strategy are analyzed. The critical issues are highlighted, such as naphtha surplus and a significant decline in benzene yield due to the lightening of steam cracking feedstocks, an excess of C9+ heavy aromatics from catalytic reformer, and a lack of effective processing technologies for refinery light hydrocarbons (e.g., liquefied petroleum gas, raffinate, and heavy C4). The study proposes optimizing feedstocks and improving technologies for catalytic reforming and steam cracking by matching hydrocarbon structures with reaction characteristics to increase the production of light aromatics and light olefins. Light hydrocarbon aromatization technology offers flexible product adjustability, while high-selectivity naphtha conversion can transform surplus naphtha into benzene, ethane, and propane, complementing catalytic reforming. Combining optimized existing technologies with new ones based on hydrocarbon structure and reaction characteristics is a key direction for light hydrocarbon and naphtha conversion in the context of “oil reduction and chemicals increase”. Reference | Related Articles | Metrics | Comments（0）

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RESEARCH PROGRESS IN OXIDATIVE DEHYDROGENATION OF PROPANE TO PROPYLENE PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (1): 119-129.   Abstract （535）      PDF（pc） （1670KB）（101）       Knowledge map    Save Propane dehydrogenation is a key industrial process for propane utilization and propylene production, including direct dehydrogenation of propane (DHP) and oxidative dehydrogenation of propane (ODHP). Although DHP has been industrialized, it still faces issues such as thermodynamic equilibrium limitations, high energy consumption, and coke deposition on catalyst. ODHP, by contrast, can break through thermodynamic limitations and enable higher single-pass propane conversion, demonstrating good application prospects. Herein, the recent progress in two types of ODHP catalysts was comprehensively reviewed: metal catalysts (vanadium based, Mo/Ni based, cobalt based) and non-metal catalysts (boron based and carbon based).The reaction mechanisms on metal and non-metal catalysts, and the latest achievements in reaction engineering and process optimization were explored, which can made up for the shortcomings of traditional ODHP, such as excessive oxidation leading to low selectivity and yield of propylene. In future, we should focus on three key directions: the development of efficient catalysts, clarification of reaction mechanisms, and optimization of oxidant systems, to promote the industrialization of ODHP technology. Reference | Related Articles | Metrics | Comments（0）

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COMPREHENSIVE UTILIZATION AND ENERGY-SAVING OPTIMIZATION OF LOW-TEMPERATURE HEAT FOR STEAM GENERATION AND UPGRADING IN AROMATICS COPLEX UNIT PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 140-144.   Abstract （205）      PDF       Knowledge map    Save To address the issue of low-temperature heat being wasted in cooling within aromatics complex units, a steam generator and steam booster were added to utilize the low-temperature waste heat from the toluene column overhead. This system generates 0.6 MPa steam, which is then boosted to 1.8 MPa, achieving comprehensive utilization of low-temperature waste heat and energy-saving and emission-reduction goals in the unit. The operational requirements, operating parameters, and energy-saving and emission-reduction effects of the steam generator and booster unit were systematically analyzed, and optimizations were made for operational issues. The results show that the equipment in this low-temperature waste heat steam generation project operates stably and meets all design specifications. The 1.8 MPa steam produced reaches a flow rate of 25.57 t/h, enabling energy savings of 16150.5 tCE/a (1 kgCE = 29.3 MJ) and a reduction in CO2 emissions of 40263.2 t/a. The economic and social benefits are significant. Related Articles | Metrics | Comments（0）

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ANALYSIS OF CO2 EMISSION REDUCTION PATHWAYS FOR REGIONAL REFINERIES BASED ON MULTI-OBJECTIVE OPTIMIZATION PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 129-139.   Abstract （211）      PDF（pc） （2834KB）（71）       Knowledge map    Save To assist the petrochemical industry in formulating reasonable carbon reduction strategies and achieving low-carbon transformation, this study conducted carbon emission accounting for 21 refineries of varying scales and regions in China by combining Monte Carlo simulation with the LEAP model. The study quantified the emission reduction effects and costs of energy-saving and consumption-reduction technologies, CCUS technologies, green electricity substitution technologies, and green hydrogen substitution technologies from 2025 to 2060.Subsequently, with the dual objectives of "maximizing carbon reduction effects and minimizing reduction costs," a multi-objective optimization model for refineries was constructed. The NSGA-II algorithm was employed to solve the model, yielding the optimal carbon reduction pathway combinations and their evolution trends for refineries in different regions from 2025 to 2060.The results indicate that after introducing the corresponding optimal technology pathway combinations based on the multi-objective optimization outcomes, the carbon emissions of refineries in different regions will decline steadily from 2025 to 2060. By 2060, the overall carbon emissions reduction will exceed 40%. Related Articles | Metrics | Comments（0）

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APPLICATION OF THERMAL INTEGRATION TECHNOLOGY IN CARBON FIVE DISTILLATION SEPARATION PROCESS PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 94-101.   Abstract （149）      PDF       Knowledge map    Save Taking the debutane column and the carbon fivepre-separation column in the carbon five separation process as the research object, the conventional distillation process model was established by using UniSim Design software, and the thermal integration of the debutane column and the carbon five pre-separation column was carried out. The simulation results showed that the energy consumption of the condenser and the reboiler was reduced by 19.26% and 19.02%, respectively, after the optimization of the thermal integration technology. Annual operating cost and annual total costwere reduced by 19.19% and 15.05%, respectively. Based on the steady-state model, a dynamic distillation process model was established, and a dynamic control scheme was designed to investigate the effects of feed flow and feed composition on the key parameters of distillation separation process (output at the top and bottom, mass fraction of key components and temperature at the top and bottom). The results of dynamic response analysis show that the fixed reflux ratio control structure has good anti-interference performance in the separation process, and can realize the stable control of dynamic simulation. Related Articles | Metrics | Comments（0）

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REMOVAL CHARACTERISTICS AND CHEMICAL CONVERSION MECHANISMS OF DIBENZOFURAN DURING THERMAL DESORPTION OF OIL-CONTAMINATED SOIL PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 84-93.   Abstract （195）      PDF（pc） （1587KB）（69）       Knowledge map    Save This study investigated the removal characteristics of dibenzofuran and its mechanisms of physical desorption and chemical conversion during the thermal desorption of oil-contaminated soil. The results demonstrated that after remediation at 300 °C, the residual mass fraction of dibenzofuran in the soil was below 24.46 μg/g, which is lower than the risk screening values for Class I construction land as stipulated by the local standards of Hebei and Guangdong provinces. Among the kinetic models, three types of exponential decay models (basic, composite, and modified) were found to be more suitable for exploring the physical desorption behavior of dibenzofuran under heating conditions than first/second-order kinetic models. Analysis based on the Criado and Coats-Redfern models revealed that the most appropriate models for describing the chemical transformation behavior of dibenzofuran were the power function model P2 (initial stage), the contracting surface model R2 (middle stage), and the contracting surface model R2, contracting model R1, and contracting volume model R3 (late stage). The frequency of effective molecular collisions of dibenzofuran was significantly higher during the Contracting model R1 stage than in other model stages. Furthermore, the initial pyrolysis stage required the highest activation energy, substantially greater than that required in the middle and late stages. Reference | Related Articles | Metrics | Comments（0）

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STUDY ON INCREASING ELECTRIFICATION RATE IN NEW LARGE ETHYLENE PLANTS PETROLEUM PROCESSING AND PETROCHEMICALS    2025, 56 (7): 1-7.   Abstract （896）      PDF（pc） （1278KB）（69）       Knowledge map    Save Under the dual-carbon targets,utilizing green electricity and improving electrification rate constitute crucial pathways for reducing carbon emissions in ethylene plants. This study investigates the feasibility of electrification of some steam users in newly constructed large-scale ethylene plants through comprehensive analysis of equipment technology, process operational stability, carbon dioxide emissions, and economy. The results show that:  Current electrical equipment technologies exhibit sufficient maturity for practical implementation; After the electrification rate is improved, the stability of the process operation depends more on the power supply quality; Utilizing green electricity, elevating electrification rate from 14.8% to 34.7% could reduce CO2 emissions by 510 kt/a;  Economic analysis indicates that the internal rate of return (IRR) of electrification rate enhancement schemes exhibits high sensitivity to fuel gas and electricity prices, while achieving a higher IRR under carbon tax scenarios. Considering ethylene plants' leading role in petrochemical systems, increasing the electrification rate needs to be gradual according to the specific situation in practical projects.It is technically and economically feasible to increase the electrification rate of ethylene plants under the premise of fully guaranteeing the stability of power supply, which is helpful to reduce carbon emissions. Reference | Related Articles | Metrics | Comments（0）

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STUDY ON SAFETY EARLY WARNING MODEL FOR NATURAL GAS DESULFURIZATION PURIFICATION UNIT BASED ON ETCN-LSTM NETWORK PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 102-108.   Abstract （175）      PDF       Knowledge map    Save To address the false alarm issue caused by abnormal sensor fluctuations due to cavitation in natural gas desulfurization purification unit, this study proposes a multi-sensor data fusion technology based on an expanded time-convolutional neural network (ETCN) enhanced long short-term memory (LSTM) network. The ETCN-LSTM model integrates data from multiple sensors related to cavitation to predict foaming behavior. Results demonstrate that the ETCN-LSTM model effectively fuses multi-sensor data and accurately predicts foaming levels over time, with predictions showing strong alignment with actual values. Compared to the standard LSTM, the ETCN-LSTM reduces root mean square error (RMSE) and mean absolute error (MAE) by 12.0% and 26.4%, respectively, while maintaining low computational cost and improving long-term prediction stability. Reference | Related Articles | Metrics | Comments（0）

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NEW TECHNOLOGY FOR ETHYLBENZENE PRODUCTION FROM CATALYTIC CRACKING DRY GAS BY LIQUID-PHASE PROCESS AND ITS INDUSTRIAL SIDE-LINE TEST  PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (4): 1-8.   Abstract （553）      PDF（pc） （1406KB）（68）       Knowledge map    Save Aiming at the problem of "four highs" (high reaction temperature, high benzene-olefin ratio, high energy consumption and high xylene content) in the process of catalytic cracking dry gas to ethylbenzene in refinery enterprises, an innovative liquid phase ethylbenzene production technology from catalytic cracking dry gas has been developed. By adopting key technical means such as "pressurized absorption at room temperature", "pressurized absorption liquid" and "circulation of reaction liquid", a major breakthrough in the technology of liquid-phase synthesis of ethylbenzene from catalytic cracking dry gas has been successfully achieved.The industrial side-line test showed that the ethylene content in the absorption tail gas was no more than 0.5%, the selectivity of ethylbenzene in the reaction products was no less than 88.5%, the selectivity of ethylation was no less than 99.5%, and the mass fraction of xylene was no more than 100μg/g under the conditions of absorption pressure of 2.2 MPa, reaction inlet temperature of 205℃, and molar ratio of fresh benzene to ethylene (abbreviated as benzene-ethylene ratio) of 3.5. Compared with the original gas phase technology, the process flow and the reactor structure are simple, the raw material benzene heating furnace is eliminated, the energy consumption is reduced by 51.0%, and the CO2 emission is reduced by 36%. The development of new technologies can meet the requirements of green low-carbon transformation, help to promote the high-quality development of enterprises, showing good industrial promotion value. Reference | Related Articles | Metrics | Comments（0）

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STUDY ON CATALYTIC REFORMING OF HYDROGENATED COAL-BASED NAPHTHA FOR AROMATICS PRODUCTION PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 38-42.   Abstract （248）      PDF       Knowledge map    Save Using hydrogenated coal-based naphtha as the feedstock and semi-regenerative reforming catalysts, the effects of reaction temperature, pressure, and space velocity on the liquid yield and composition of the product oil were investigated. The results showed that as the reaction temperature increased, the liquid yield of the reformed oil decreased, while the aromatic content increased. With pressure increasing, the liquid yield of the reformed oil decreased, and the aromatic content also decreased. Space velocity had a relatively minor impact on both the liquid yield and aromatic content of the reformed oil. Under optimized conditions, the conversion rate of naphthenes reached as high as 98.95%. The reformed oil mainly consisted of aromatics, iso-paraffins, and n-paraffins, with an aromatic content of 84.87% and an aromatic yield of 71.79%. Hydrogenated coal-based naphtha is a high-quality feedstock for the production of aromatics. Reference | Related Articles | Metrics | Comments（0）

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PREPARATION OF BARIUM/ZIRCONIUM MODIFIED IRON-BASED CATALYST AND ITS PERFORMANCE IN FISCHER-TROPSCH SYNTHESIS OF α -OLEFINS PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 52-63.   Abstract （164）      PDF       Knowledge map    Save Fischer-Tropsch synthesis (FTS) is one of the main industrial routes for the preparation of α-olefins, but it is plagued by low α-olefin selectivity, severe methane side reactions and insufficient catalyst stability. This study aims to prepare Fe-xBa and Fe-yZr catalysts with different Ba or Zr loading by co-precipitation and equal volume impregnation methods, and explore their effects on the performance of FTS for α-olefin production. The physicochemical properties of the catalysts were characterized by XRF,XRD,TEM,etc. The experimental results show that the introduction of Ba enhances the density of surface basic sites and the electron transfer effect, significantly improving the CO dissociative adsorption capacity and inhibiting the methane side reaction, resulting in an α-olefin content (mass fraction) of 48.17% in the liquid product of the catalyst. The Zr additive optimizes the pore structure and promotes the dispersion of Fe particles, enhancing the catalytic stability. The catalyst achieved a CO conversion rate of 78.98% and an α-olefin selectivity of 48.63% in a 48-hour reaction, while the selectivities of CO2 and CH4 were reduced to 37.73% and 6.54%, respectively. Appropriate Ba/Zr modified iron-based catalysts can both enhance the α-olefin selectivity and suppress the selectivities of CH4 and CO2. Reference | Related Articles | Metrics | Comments（0）

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PHYSICAL AND CHEMICAL PROPERTIES OF DIESEL ENGINE EXHAUST AND LUBRICATING OIL PARTICULATES PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 117-122.   Abstract （112）      PDF       Knowledge map    Save To systematically investigate the differences in physical and chemical properties between diesel engine exhaust particulates (DS) and in-use lubricating oil particulates (LS), the exhaust particulates from a China VI diesel engine and the in-use lubricating oil particulates from the same engine were collected. The differences in physical and chemical properties between the two types of particulates were examined using high-resolution transmission electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, and thermogravimetric analyzer, and the reasons for the differences in particulate properties were discussed.The results show that both types of particulates exhibit a typical "core-shell" structure. The average particle sizes of DS and LS particulates are 58.2 nm and 52.6 nm, respectively. Both types of particulates are mainly composed of C and H. Functional elements of lubricating oil such as Ca, S, P, and Zn are found in LS particulates, and Ca mainly exists in the forms of CaSO4 and CaO. Compared with DS, LS had the following characteristics: slightly higher graphitization degree and slightly thinner graphite shell; slightly higher fractal dimension and greater particle structure compactness; slightly higher oxidation activity, making it more prone to oxidation reactions. Reference | Related Articles | Metrics | Comments（0）

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SEPARATIONANDREFININGOFETHYLENEOLIGOMERIZATIONBY-PRODUCTWAXESANDCOMPOSITIONANALYSIS PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 19-27.   Abstract （191）      PDF       Knowledge map    Save The by-product polyethylene wax from ethylene oligomerization contains impurities such as high-carbon olefins and ash, leading to low value and limited applications if sold with minimal processing. To enhance its utilization, refining treatments are necessary. This study examined the effect of different solvents on the separation of the polyethylene wax and identified optimal refining conditions. Using a Soxhlet extraction system with n-hexane, the wax was separated into four fractions（Fraction 1 to Fraction 4）in descending order of melting point, with mass percentages of 30.60%, 38.05%, 13.00%, and 18.35%, respectively. The physicochemical properties and ash composition of each fraction were systematically analyzed, revealing that metallic elements in the ash derived from the catalyst system used in ethylene oligomerization. Related Articles | Metrics | Comments（0）

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RESEARCH PROGRESS ON BIFUNCTIONAL CATALYSTS FOR DIRECT HYDROGENATION OF CO2 TO AROMATICS PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 152-165.   Abstract （327）      PDF       Knowledge map    Save Research on bifunctional catalysts for direct hydrogenation of CO2 to aromatics provides a new approach for exploring the synthesis of aromatics using CO2 as a carbon source, which is conducive to promoting the low-carbon emission reduction and green transformation of the chemical industry. This work focuses on the design and performance optimization of bifunctional catalysts aimed at enhancing CO2 conversion efficiency and aromatic selectivity through advanced catalytic material development. A systematic analysis is conducted on the synergistic mechanisms of the methanol-mediated and Fischer–Tropsch synthesis pathways, with particular emphasis on the influence of active site structure, pore architecture, and acid site distribution on reaction pathway regulation. Furthermore, the effects of key operational parameters, such as the metal-to-zeolite mass ratio and reaction temperatureon product distribution are elucidated. The study demonstrates that constructing bifunctional catalysts with spatial and acidic synergistic effects enables both efficient CO2 conversion and selective aromatics formation. Future research directions will focus on the development of novel hierarchical pore-structured catalyst systems, dynamic mechanistic investigations, and integrated process optimization, providing technological support for CO2 valorization. Reference | Related Articles | Metrics | Comments（0）

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RESEARCH PROGRESS ON SOLID-STATE ION EXCHANGEOF TECHNOLOGY FOR ZEOLITE MODIFICATION PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 166-172.   Abstract （195）      PDF       Knowledge map    Save Ion exchange is a crucial technique for precisely tuning the acidity, pore size, and active site distribution of zeolites. Although the traditional liquid ion exchange (LIE) method is widely used, it suffers from issues such as long processing times, large wastewater generation, and low exchange capacity. Enhancing the efficiency of zeolite ion exchange while reducing energy consumption and pollution remains a significant challenge in the field. Solid-state ion exchange (SSIE) offers advantages such as low wastewater production and faster exchange rates, overcoming many limitations of LIE. However, fundamental research on the principles and process optimization of SSIE is still limited. This paper provides a comprehensive discussion of the ion exchange mechanism in SSIE, focusing on the influence of zeolite types, metal types, and thermal treatment conditions on exchange efficiencyas well as the existing challenges. It also offers a detailed comparison of the characteristics of LIE and SSIE, providing valuable insights for future research on green modification methods for zeolites. Reference | Related Articles | Metrics | Comments（0）

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ANALYSIS OF IMPACT OF LIGHT/HEAVY RAW MATERIAL ON SEPARATION UNIT OF ETHYLENE PLANT PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 9-18.   Abstract （204）      PDF       Knowledge map    Save The operation and running of the ethylene plant are greatly affected by changes in raw materials, which can cause changes in the load of various systems and equipment in the ethylene plant, thereby affecting the operating efficiency and product quality of the plant. Therefore, it is necessary to conduct targeted accounting for each system of the device to ensure that each unit can adapt to new operations after changes in raw materials. Taking a domestic ethylene plant as an example, a detailed comparison is made on the impact of light and heavy raw material conditions on various systems of the separation unit, and specific analysis is given on the adjustments required for each system. The results indicate that the changes in raw materials in the ethylene plant have different degrees of impact on each process unit. The comprehensive impact of raw materials on ethylene production is reflected in the energy consumption of the ethylene plant, that is, the production cost of ethylene. When the raw materials have a certain amount of lightweight space, the ethylene yield is higher, the energy consumption is reduced, and the operating cost of the plant is reduced. Reference | Related Articles | Metrics | Comments（0）

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APPLICATION OF PARTIAL CUT-OUT TECHNOLOGY FOR GUARD REACTOR IN FIXED-BED RESIDUE HYDROTREATING UNIT PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 28-33.   Abstract （202）      PDF       Knowledge map    Save Aiming at the technical bottlenecks of a 2.0 Mt/a fixed-bed residue hydrotreating unit in a refinery, such as the need to reduce the residue blending ratio before cutting out the guard reactor and the significant fluctuation of bed temperature rise after the complete cut-out, an optimized process for partial cut - out of the guard reactor was studied and applied. Compared with the conventional complete cut-out process of the guard reactor, this method can maintain a higher residue blending ratio. At the same time, the fluctuation range of bed temperature rise can be controlled within ±5 °C, and the stability of process operation is significantly improved. The implementation of this method has successfully extended the operation cycle of the unit by about 3 months, providing an engineering solution for the long-period operation of fixed-bed residue hydrotreating units. Reference | Related Articles | Metrics | Comments（0）

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THE FIRST REGENERATION AND COMMERCIAL APPLICATION OF TORH-1 CATALYST FOR LIQUID PHASE DEOLEFINNATION FROM CONTINUOUS REFORMING OIL PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 64-67.   Abstract （180）      PDF       Knowledge map    Save This article provides a systematic introduction to the regeneration and post-regeneration performance of the olefin removal catalystTORH-1, which had been in operation for 36 months in the liquid-phase hydrodeolefining unit of 1.0 Mt/a continuous catalytic reforming unit at CNOOCTaizhou Petrochemical Co., Ltd . After the first regeneration, the chlorine, carbon, and sulfur content of the catalyst all met the regeneration index requirements, with a specific surface area increase of 10 m2/g and a pore volume increase of approximately 5%. Data from 20 months of operation after regeneration show that under the conditions of a reaction pressure of 1.2 MPa, a temperature range of 120－160 ℃, and a hydrogen-to-oil volume ratio of 4.5:1, when the feedstock bromine index was 3,500－4,200 mgBr/(100 g), the average product bromine index remained stable at 53.48 mgBr/(100 g). The olefin removal rate reached 98.68%, and the average aromatics loss rate meets the specification requirements. The bromine index of the benzene, toluene, and xylene products met the national standards for product shipment, indicating effective catalyst regeneration. Compared to the clay treatment process, the use of the TORH-1 olefin removal catalyst resulted in cost savings of 12.6 million yuan. Reference | Related Articles | Metrics | Comments（0）

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DEVELOPMENT STRATEGY OF TAILORED START-UP CATALYST AND THE INDUSTRIAL APPLICATION PRACTICES IN MULTIPLE SCENARIOS PETROLEUM PROCESSING AND PETROCHEMICALS    2026, 57 (3): 43-51.   Abstract （173）      PDF       Knowledge map    Save The lack of high-value utilization methods for catalytic cracking E-Cat has been a persistent challenge. Tailored start-up catalyst as an efficient solution, with the core principle being the scientific utilization of equilibrium catalysts from diverse sources. Based on the process characteristics of catalytic cracking units and different requirements for product distribution, while also considering the physicochemical properties (such as fluidization) of the start-up catalyst, the TSC tailored start-up catalyst was developed through the scientific blending of selected equilibrium catalyst, tailored fresh catalyst, and inert additives. This series can meet the industrial application needs of multiple scenarios, including start-up of new units, start-up after maintenance, rapid replacement after equilibrium catalyst poisoning, and replenishment during abnormal catalyst loss. Compared to traditional start-up catalyst, the tailored start-up catalyst exhibit excellent physical properties, can quickly align with the start-up requirements of the target unit, assist in rapidly achieving the desired product distribution, and enhance the overall economic efficiency of the unit. Industrial applications in units such as the 4.00 Mt/a DCC unit at Yulong Petrochemical Co., Ltd., the 2.80 Mt/a MIP unit at SINOPECYangzi Petrochemical Company, the 3.00 Mt/a RTC unit at SINOPEC Zhenhai Refining & Chemical Company and the 3.00 Mt/a RTC unit at SINOPEC Anqing Company demonstrated that the catalyst reaction activity reached a stable state quickly, contributing to a faster achievement of the designed product distribution and significantly reducing the unit adjustment time, thereby ensuring economic benefits. The development and application of tailored start-up catalyst achieve high compatibility with target units, pioneer a high-value utilization pathway for catalytic cracking equilibrium catalyst, and fully leverage the leading role of green refining technology. Reference | Related Articles | Metrics | Comments（0）