Top Read Articles

Top Read Articles
Published in last 1 year |	In last 2 years |	In last 3 years |	All

Please wait a minute...


For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails

Select

COMMERCIAL TRIAL OF THE APPLICATION OF HCRL REACTIVATED FCC CATALYST Petroleum Processing and Petrochemicals    Abstract （8034）            Knowledge map    Save The application of HCRL catalyst, a reactivated spent FCC equilibrium catalyst (E-cat), at the No.2 FCC unit of SINOPEC Yansan Petrochemical Company was introduced. Results of performance tests showed that under the same catalyst cost, as compared with the base case the micro-activity of E-cat containing 40% HCRL catalyst was about 2 units higher, the heavy metals content on E-cat was kept at a relative low level, the product slates were improved and the total liquid yield was 1.72 percentage points higher. Related Articles | Metrics | Comments（0）

Select

COMMERCIAL APPLICATION OF VRCC-1 CATALYST AT RFCC UNIT Petroleum Processing and Petrochemicals    Abstract （7135）            Knowledge map    Save This paper presents the commercial application of VRCC-1 residue catalytic cracking catalyst at the RFCC unit of Sinopec Beijing Yanshan Company. Performance test results indicate that this catalyst possesses excellent residue crackability, good resistance to heavy metals contamination and improved coke selectivity, thus it is suitable for the use of processing heavy and poor feedstocks. When processing heavy feedstocks, the light oil yield and total liquid yield were more than 66% and more than 80%, respectively. Related Articles | Metrics | Comments（0）

Select

INVESTIGATION ON THE FUNCTION AND ADJUSTMENT OF FCC PROCESS IN RICP TECHNOLOGY Chao-Gang Xie Niu Chuanfeng Petroleum Processing and Petrochemicals    Abstract （6993）            Knowledge map    Save Based on the development and commercial application of RICP technology (Residue Integrated Combination Process), the investigation on the function and adjustment of FCC unit in RICP was carried out. In RICP technology, FCC unit not only is the final process for residue conversion, but also provides intermedium streams, such as heavy cycle oil (HCO) and/or decanted oil (DO), as co-feedstock for hydrotreating unit. The new recycle mood of HCO and/or DO stream results in a great improvement of FCC feedstock properties, which leads to the increase of throughput and/or residue blended ratio of FCC unit, and the product slates and product quality are improved as well. In respond to the changes in feedstock system, unit capacity, product distributions, product properties, operation mood, fractionation system and catalyst system, proper adjustments should be made in FCC process to obtain the optimal effect of integrated technology. Related Articles | Metrics | Comments（0）

Select

THE APPLICATIONAL RESEARCH OF PREPARING LUBE BASE OIL BY COMPLEXATION-ADSORPTION TECHNOLOGY Petroleum Processing and Petrochemicals    Abstract （6679）            Knowledge map    Save Using MVI and HVIH distillates from Dushanzi Petrochemical Company as feedstocks respectively, the experiments of clay refining and complexing-adsorption refining were carried out in the laboratory. The process conditions and the quality of refined oil from these two refining processes were compared. Results indicate that the qualities of refined oils by these two processes all meet the technical requirements of Q/SY 44-2009 standard for lube base oil. However, for MVI feedstock, the qualities of refined oils from complexing-adsorption refining are better; for HVIH feedstock (from hydrocracking tail oil), the qualities of refined oils from both processes are similar. By technical economical analysis of these two processes, it can be seen that using complexing-adsorption refining to substitute clay refining the benefits are as follows: solid waste can be reduced up to 95%, refined oil yield increases 1.62 percentage points, the loss of oil decreases by 80% and comprehensive energy consumption can be reduced 11%, on the whole, the production cost is lowered significantly. Related Articles | Metrics | Comments（0）

Select

A STUDY OF MHUG TECHNOLOGY TO PRODUCE CLEAN DIESEL FUEL FOR COMMERCIAL APPLICATION Yuying Zhang Zhihai Hu jing Xin Hong Nie Petroleum Processing and Petrochemicals    Abstract （6223）            Knowledge map    Save MHUG technology was reviewed based on analyzing the hydrocarbon compositions of diesel fuel and the chemical reaction mechanism of hydroprocessing. The study of MHUG technology to produce clean diesel fuel meeting the Europe V exhaust standard was carried out on a 3L pilot plant using various feedstocks from refineries and various processing schemes were adopted. The results showed that clean diesel fuel with sulfur content less than 10 g/g and cetane number more than 51 could be produced by MHUG technology with good feedstock adoptability. Besides, naphtha with aromatic potential content more than 55% could also be obtained as by-product. Related Articles | Metrics | Comments（0）

Select

STUDY ON STABILITY OF BLENDING HEAVY OILS BY DYNAMIC THERMAL FOULING METHOD Petroleum Processing and Petrochemicals    2013, 44 (6): 17-21.   Abstract （5788）      PDF       Knowledge map    Save A method of dynamic thermal fouling was created to evaluate the stability of blended heavy oil. Using Lanzhou Vacuum Residue as stock, the evaluation conditions were discussed. Under the conditions of flow rate of 10 g/min, reactor wall temperature of 390 ℃ and sampling at 30 h, the reliable evaluation results can be obtained. The method was then used to examine the stabilities of Lanzhou Vacuum Residue (LZVR) with Lanzhou Ethylene Tar (LZET) blending system. The evaluation results that the fouling resistance and the temperature drop in reactor center from the wall increase with the increment of the ratio of LZET/LZVR indicate the decrease of stability of blending system. The results of the method are consistent with the analysis of mass fraction normalized conductivity. This demonstrate that dynamic thermal fouling method can track the phase separation and fouling of blended heavy oil dynamically, which provides supports for industrial blending process. Related Articles | Metrics | Comments（0）

Select

DEVELOPMENT AND COMMERCIAL APPLICATION OF CRMI-II (TJ) CATALYST FOR MIP TECHNOLOGY PROCESSING CGO BLENDED FEEDSTOCK Jiang Wenbin Petroleum Processing and Petrochemicals    Abstract （5674）            Knowledge map    Save Based on the unit operation conditions, feedstock properties, the requirements of product slates and product properties in Tianjin Petrochemical Corporation, CRMI-II (TJ) catalyst, a catalyst specially tailored for MIP technology to process feedstock with high coker gas oil (CGO) blending, was developed. The commercial application results showed that using CRMI-II (TJ) catalyst, when processing an intermediate base feedstock blended with 20-30% CGO and 10-20% AR, the total liquid yield reached more than 87%, the obtained stabilized gasoline had an olefin content of less than 35% and RON over 92. As compared with reference catalyst (base case), CRMI-II (TJ) catalyst exhibited better coke selectivity, good basic nitrogen tolerance, enhanced gasoline octane number and higher propylene yield. Related Articles | Metrics | Comments（0）

Select

SYNTHESIS AND PERFORMANCE STUDY OF A POLYQUATERNARY AMMONIUM SALT FLOCCULANT PEFD Petroleum Processing and Petrochemicals    Abstract （4893）            Knowledge map    Save An organic cationic flocculant (PEFD) containing quaternary ammonium ion was synthesized using epichlorohydrin (E), diethylamine (F) and 1, 2-diaminoethane (D) as raw materials. The intrinsic viscosity, charge density and turbidity removal rate of PEFD were determined and its structure was characterized by FT-IR. Test results showed that the optimum PEFD synthesis conditions were mixing F and D with a ratio of nF/nD=8.82, then slowly adding E into the mixture of (F+D), reacting at 50 ℃ for 3 h. Using the obtained PEFD as flocculant at a dosage of 10 mg/L, the removal rate of turbidity reached 92.72%, which was much better than that of using commercial polyacrylamide flocculants. Related Articles | Metrics | Comments（0）

Select

INFLUENCE OF REDUCTION TEMPERATURE ON CATALYTIC ACTIVITY AND MICROSTRUCTURE OF PD/C CATALYSTS PREPARED BY COLLOIDAL METHOD Petroleum Processing and Petrochemicals    2014, 45 (9): 47-51.   Abstract （4880）      PDF       Knowledge map    Save A series of Pd/C catalysts for hydropurification of terephthalic acid were prepared using sol-gel process. The effect of reduction temperature on the microstructure and activity of the catalysts were investigated by means of SEM, TEM, EDS, physisorption, chemisorption and HPLC. The results show that the activity and dispersion of Pd sharply decreases with the increase of reduction temperature. The conversion ratio of 4-CBA is close to 100% at reduction temperature of 10℃ and the dispersion of Pd also reaches the highest. The Pd particles at this condition are fine and equally distributed with average size of about 6.45 nm. However, a lot of larger particles with size of 15-20 nm gather at the surface at reduction temperature of 30℃. The amount of Pd on the catalyst surface reduced at 30℃ is about five times the amounts of Pd on the surface reduced at 10℃. Higher temperature generally causes the breaking of hydrogen bond between polyoxyethylene group and water, leading to a great reduction of solubilization capacity, which further results in the growth of Pd grain and the decrease of activity of Pd/C catalysts because of increased collision probability of Pd colloids. Reference | Related Articles | Metrics | Comments（0）

Select

ENERGY CONSUMPTION ANALYSIS AND ENERGY SAVING MEASURES OF FURFURAL REFINING UNIT Petroleum Processing and Petrochemicals    2013, 44 (1): 102-105.   Abstract （4427）      PDF       Knowledge map    Save The energy consumption of furfural refining unit in Karamay Petrochemical Company was analyzed. It was found that the energy consumption of the unit was mainly depended on the consumptions of fuel gas, self produced steam, electricity and circulating water. Some countermeasures to reduce the energy consumption were put forward and realized during revamping, such as energy saving reform of heating furnace, optimizing heat exchange flow, stop using the cooler for return stream at the bottom of extraction tower, adding frequency convertor on pumps and so on. Since then, the consumptions of fuel gas, self produced steam, electricity and circulating water reduced significantly, the total energy consumption of the unit dropped to 639.95 MJ/t, which is a reduction of 27.64% compared with the base case. Related Articles | Metrics | Comments（0）

Select

SOLUTIONS FOR PREVENTING CONGEALMENT HAPPENED AT THE AIR-COOLER OF CONTACT COOLING TOWER IN DELAYED COKING UNIT Petroleum Processing and Petrochemicals    Abstract （4341）            Knowledge map    Save Congealment sometimes happened at the air cooler of the contact cooling tower in delayed coking unit of Karamay Petrochemical Company. In order to solve this problem, measures such as optimizing process conditions, adjusting the turning of air-cooler, adding frequency adjuster to the air-cooler and changing the feeding mode, were adopted. Since then the unit was running stably and the consumption of steam and electricity was reduced. Related Articles | Metrics | Comments（0）

Select

COMPARISON OF METHODS FOR DETERMINING WAX CONTENT IN CRUDE OIL TIAN Songbai Petroleum Processing and Petrochemicals    Abstract （3822）            Knowledge map    Save Four standard methods (SY/T 0537, SY/T 7550, ГОСТ 11851 and UOP 46) for determining wax content in crude oil are compared. Significant differences and certain regularities among the wax content results obtained by these methods are observed. The wax contents obtained from high to low are in the order of UOP 46> SY/T 0537> SY/T 7550> ГОСТ 11851. It can be seen that in these four methods, the dewaxing conditions, solvent compositions and the solubility of wax in solvent are varied, which leads to the differences of results obtained by each method. Furthermore, based on the analysis of wax compositions it is found that the differences are mainly caused by the various solubilities of ≤C25 n-paraffins and other hydrocarbons in the individual solvent under individual dewaxing conditions. Related Articles | Metrics | Comments（0）

Select

SOURCE AND REMOVAL OF ORGANIC CHLORIDE IN TAHE CRUDE OIL Petroleum Processing and Petrochemicals    2013, 44 (4): 86-90.   Abstract （3711）      PDF       Knowledge map    Save The existing forms of chloride salt in Tahe crude oil and their sources were analyzed and an assistant agent H for organic chloride removal was developed and tested. It is found that there are two forms of chloride salts in Tahe crude oil: inorganic and organic chloride and that the content of organic chloride is above 50％. The organic chloride cannot be completely removed by traditional method and mainly goes into residual oil fraction during distillation. The test results show that the agent H with demulsifier together can decrease the chloride content in treated oil to less than 10 ?g/g and salt content to less than 3 mg NaCl/L. Meanwhile it has little disadvantageous effect on demulsification. Related Articles | Metrics | Comments（0）

Select

DEVELOPMENT AND INDUSTRIAL APPLICATION OF RAPID CRUDE OIL EVALUATION SYSTEM BY NIR Petroleum Processing and Petrochemicals    2014, 45 (8): 97-101.   Abstract （3646）      PDF       Knowledge map    Save On the basis of existing technology, the secondary development of RIPP`s rapid crude oil evaluation system by near infrared was conducted. A rapid evaluation model was established based on the database of crude oils processed in refineries by combination of crude data library spectrum fitting and identify technique. The secondary developed rapid evaluation system was applied to A, B two refineries to identify and predict the kind and properties of the crude. The results demonstrate that the established evaluation system can identify well the crude oils processed by refineries under the conditions of the perfect database. The density of crude oil, acid value, content of sulfur and carbon residue of the two refineries can be predicted with small deviation from the standard (RMSEP). The repeatability is equal to the standard method. Reference | Related Articles | Metrics | Comments（0）

Select

STUDY ON HYDROTREATING OF VGO BLENDING WITH VACUUM RESIDUE Petroleum Processing and Petrochemicals    2015, 46 (5): 34-38.   Abstract （3633）      PDF       Knowledge map    Save To widen the sources of FCC feedstocks and upgrade residue, the two step hydrotreating process (DVHT) of VGO blending with vacuum residue (VR) was studied in pilot plant. The VGO blended with VR directly as feed (one step process) was taken as the reference. The effect of VGO/VR mass ratio on the impurity removal activity and catalyst stability for both processes were investigated. The results show that the product of DVHT process are characterized by lower sulfur, lower nitrogen, but higher content of hydrogen, metal, and carbon residue. It is better to adopt DVHT scheme for high-sulfur VGO feedstock. With increase of VR blending ratio, the removal rates of sulfur, nitrogen, carbon residue and metal decrease rapidly. The VR blending ratio gives the largest influence on removal of HDN and HDCCR, and the influence on HDM takes the second place, while the influence on HDS is the smallest. The 4000 h stability test indicates that the VR blending ratio has a great influence on the activity stability of the catalysts and that the VR blending ratio lower than 15% is appropriate for high-asphaltene residue. Related Articles | Metrics | Comments（0）

Select

MEASURES FOR UPGRADING THE PROCESSING CAPACITY OF S ZORB UNIT Petroleum Processing and Petrochemicals    2013, 44 (1): 60-64.   Abstract （3541）      PDF       Knowledge map    Save The main causes of lower processing capacity than the design value of the 900 kt/a S Zorb unit in SINOPEC Jinan Company were analyzed and counter measures were discussed. Since adopting measures, such as adding another feed filter, cleaning heat exchanger of feed, increase the riser outlet temperature of FCC unit, increase the direct feed supply temperature from FCC unit to S Zorb unit, adjusting the cycle rate of sorbent and frequency of regeneration, using heavy gas as fuel of heating furnace, reducing the reaction temperature and using high-purity hydrogen, the processing capacity of said S Zorb unit has an increment of about 11 t/h and the gasoline product also well meets the requirement of National Emission Standard III. Related Articles | Metrics | Comments（0）

Select

EFFECTS OF DETERGENT ON THE OXIDATION STABILITY OF GASOLINE Petroleum Processing and Petrochemicals    Abstract （3426）            Knowledge map    Save The effects of gasoline detergent on the oxidation stability of gasoline are introduced. Results of variance analysis show that the unwashed gum and washed gum of gasoline having detergent is mainly affected by detergent and secondly by gasoline; while the induction period is mainly depended on gasoline and the detergent has little influence. For induction period, a linear relationship exists between the gasoline having detergent and the base gasoline. Both gum and induction period change linearly with the increase of detergent content in gasoline. With the addition of detergent, the contents of unwashed gum increase significantly in the range of 8.3~ 39.7 mg/100mL (i.e. 2.5 times to 42 times of the base gasoline); the contents of washed gum decrease by 15.0%~83.3%; induction periods vary from -9.0%~14.0%. Therefore, detergent which has little influence on induction period and could reduce washed gum significantly is preferred. Related Articles | Metrics | Comments（0）

Select

DEVELOPMENT AND APPLICATION OF MANAGEMENT SYSTEM ON REFINING BENCHMARK PROCESSING LOSS Petroleum Processing and Petrochemicals    2013, 44 (5): 82-86.   Abstract （3411）      PDF       Knowledge map    Save Using advanced software technology, an integrated management system was developed based on hydrocarbon loss theory and mathematical models. The system can calculate and forecast the benchmark loss of crude oil transportation, storage, processing, semi-finished products transit and products outgoing. It also provides many kinds of charts to help engineers analyze and evaluate the status of loss by comparing benchmark loss with statistical loss. The system has been applied in several refineries. The results show that it is helpful to decrease refinery loss. Related Articles | Metrics | Comments（0）

Select

OPTIMIZATION OF PROPYLENE RECOVERY IN GAS FRACTIONATION UNIT AND FEASIBILITY STUDY OF ADOPTING DUAL-TOWER PROCESS Feng-Lin Huang Petroleum Processing and Petrochemicals    Abstract （3397）            Knowledge map    Save Since the recovery rate of propylene in gas fractionation unit was usually less than 95%, a simulation of the whole processing scheme for a 0.2 Mt/a gas fractionation unit was carried out using PRO/II software to study the causes of propylene loss and the countermeasures. Feeds with various compositions including design value were used in simulation and the reliability of simulation was validated. Results showed that the loss of propylene mainly came from the top outlet gas of deethanizer and the bottoms of propylene fractionating tower, in which the former occupied more than 65% of the total propylene loss. Feasibility study of eliminating deethanizer and using dual-tower process was carried out. It was found that if the mol content of C2 in feed could be controlled to less than 0.10%, the dual-tower process could be realized. Simulation data showed that with the adoption of dual-tower process and optimizing the operation conditions of propylene fractionating tower, the recovery rate of propylene in gas fractionation unit could reach more than 99%. Related Articles | Metrics | Comments（0）

Select

EFFECT OF CHLORIDE ION CONTENT IN CIRCULATING WATER ON THE CORROSION BEHAVIOR OF CARBON STEEL Petroleum Processing and Petrochemicals    Abstract （3394）            Knowledge map    Save The effect of chloride ion content in simulated circulating water on the corrosion behavior of 20# carbon steel and 08 carbon steel was investigated by means of laboratory immersion and electrochemical methods. The results showed that with the increase of chloride ion content, the corrosion resistance of both 20# and 08 carbon steel materials decreased. When the chloride ion content was less than 750 g/g, corrosion resistance performance of the two materials in the simulation solution were similar; however, when the chloride ion content was more than 750 g/g, 08 carbon steel exhibited superior corrosion resistance in simulation solution as compared with 20 # carbon steel. Related Articles | Metrics | Comments（0）