Table of Content

12 August 2007, Volume 38 Issue 8

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催化剂

The first commercial application of catalyst RN-32/RHC-1 for increasing hydrocracking unconverted oil being as ethylene feedstock

2007, 38(8):  1-5.  doi:

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This is an introduction of the first commercial application of catalyst RN-32/RHC-1 in 1300kt/a hydrocracking unit in Yan San Petrochemical Corporation. The pilot plant tests showed that RN-32 catalyst has a high hydrodenitrogenation activity, and RHC-1 catalyst has a strong ability of ring-opening to obtain excellent unconverted oil as being ethene feedstock.. Based on the temperature increasing rate of catalyst, the catalysts have good stabilities which can meet the demand of long run period. The successful application of new catalysts is beneficial to improve economic profits for Yan San Petrochemical Corporation. .

DEVELOPMENT AND COMMERCIAL APPLICATION OF FV-10 CATALYST FOR PARAFFIN WAX HYDROFINING

2007, 38(8):  6-9.  doi:

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Abstract The hydrofining of paraffin and microcrystal wax used FV-10 catalyst was expounded.The results showed that higher active and stability preceded FV-1 and 481-2B catalysts to be suitable to production of food grade paraffin and microcrystal wax. FV-10 catalyst had be applied in three set of industrial sets and the quality of product is eligibility, which run smooth reached the destine target.

加工工艺

Selection of the starting solvent for Shenhua Direct Coal Liquefaction Process

2007, 38(8):  19-22.  doi:

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In the direct coal liquefaction process the solvent for preparing coal slurry has very important function. Shenhua Direct Coal Liquefaction Process adopts "full hydro-treated H-donor solvent", which is very important for the process. The operation experience of BSU and PDU shows that: after several times of hydro-treating, the heavy aromatics generated from FCC HCO extraction unit can serve as the starting solvent for the direct coal liquefaction process.

STUDY ON THE INTEGRATED PROCESS OF BUTANE DEASPHALTING AND FURFURAL EXTRACTING

2007, 38(8):  23-27.  doi:

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Abstract A solvent deasphalt-furfural refining process with vacuum residue and RFCC slurry as the feeds was studied.The experimental results indicate that the vacuum residue with 40% RFCC slurry, after butane deasphalting, can produce eligible asphalt products for heavy traffic road; deasphalted oil after furfural refining treatment has improved catalytic cracking performances and extracted oil can be used as the feedstocks of the aromatic rubber filling oil. In all this composite process will provide a new reasonable using way for slurry of resid fluid catalytic cracking unit .

Study on the Aquathermolysis of Extra-heavy Oil with Lower Sulfur Conten

2007, 38(8):  28-31.  doi:

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The effect of reaction temperature, reaction time, the ratio of water and oil on aquathermolysis of Liaohe extra-heavy oil was investigated. With respect to the original crude oil, the viscosity of oils obtained after aquathermolysis was decreased, the contents of saturate and aromatic hydrocarbon were increased, the contents of resin and aspaltene was reduced with the rising of reaction temperature, reaction time and the ratio of water and oil. From the experimental data, the extra-heavy oil was undergone visbreaking during the process. The reaction was basically completed, when the reaction temperature was 240℃, the reaction time was 24h, the ratio of water and extra-heavy oil was 0.5. Laboratory experiments showed the viscosity could be decreased from 147.5Pa·s to 115.4Pa·s and the mean molecular weight could be changed from 674 to 550 by aquathermosis. A conclusion can be drawn, extra-heavy oil with lower sulfur content can be upgraded by aquathermolysis and be exploited using downhole upgrading technique.

combination of poor wax oil Hydrotreating and FCC processes

2007, 38(8):  32-34.  doi:

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the influence to FCC is introduced from poor wax, Hydrotreating processes of wax oil （CGO、DAO） were expounded, pointed out: poor wax oil were Hydrotreated to remove sulfid、nitride、Aromatics for FCC set, the content of sulfid in the output of FCC set can be reduced, the yield of light oil can be improved and refinery economics can be increased.

油品与添加剂

INFLUENCE OF ALKENYL SUCCINIC ACID ON STABILITY OF STEAM TURBINE OIL EMULSION

2007, 38(8):  40-43.  doi:

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alkenyl succinic acid as an anti-rust additive is generally used in steam turbine oil. The interfacial tension, interfacial shear viscosity,oily viscosity and stability of steam turbine oil-distilled water and steam turbine oil-synthetic seawater which contain alkenyl succinic acid have been tested in laboratory. Results showed that alkenyl succinic acid can reduce interfacial tension of steam turbine oil-distilled water observably. At the same time, the intensity of interface membrane and the interfacial shear viscosity are relatively strong; and the emulsion is relatively steady. When the water is synthetic seawater , the interfacial activeness of alkenyl succinic acid is farther stronger; and the interfacial tension is farther smaller. So the ——can be adsorbed in the interface of oil-water at best. And then the stability of emulsion is better because of the compact and strong interface membrane. It’s most important for the stability of steam turbine oil emulsion.

基础研究

Study on Kinetics of Adsorbing Basic Nitrogen Compounds from RFCC Diesel Oil by Modified Activated Carbon

2007, 38(8):  48-50.  doi:

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A study on the kinetics of removing basic nitrogen compounds (BNC) from RFCC diesel oil by adsorption using modified activated carbon in room temperature. The result shows that the adsorption isotherm can be expressed by Freundlich equation： and the adsorption kinetics can be described by equation： . The liquid effective diffusion coefficient obtained by pore diffusion model is .

ON-LINE SAMPLING IN COMMERCIAL RFCC STRIPPERS

2007, 38(8):  51-54.  doi:

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The gas, liquid and catalyst samples at different positions in two commercial RFCC strippers were obtained by the on-line sampling. The gas composition, liquid product distribution and catalyst carbon content were analyzed. The results show that physical stripping and chemical reaction occur at the same time in the RFCC stripper. The physical stripping process is dominant in the upper part of stripper, whereas the chemical stripping process is dominant in the lower part. Heavy hydrocarbons carried by catalysts undergo thermal cracking, catalytic cracking and dehydrogenation condensation reactions in the RFCC stripper. From the top to the bottom of the stripper, thermal cracking and catalytic cracking reactions decrease, while dehydrogenation condensation reactions increase.

环境保护

the newtype grouping oilfield sewage treatment handicraft

2007, 38(8):  55-57.  doi:

Asbtract ( 1979 )  

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The goals of the oil field sewage treatment are to remove the oil in the water, the suspension, the chemical additive as well as other substances,which make injection water stop and easily corrode the system of injection water, and the technology used to get rid of the oil field sewage have several kinds. Various single-handed usage of technology , effect are average. But, group technology sigmatism, is very different then. Be able to choose dynamic ready-made group way , to look forward to getting optimum effect according to the oil field foul water character and equipment resource situation. That fully grown group handicraft sewage treatment having the field and the offshore field inland in our country tests a new model all gets ideal effect , is that one kind has higher the method extending value's and technology.

设备

Numerical Analyses on the Shell-side Performance of the Helical Ribbed Self-support Type Heat Exchanger

WU Jin-xing WEI Xinlin WEI

2007, 38(8):  66-70.  doi:

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In order to analyze the enhanced heat transfer mechanism of helical rib, the 3D models of the double-tube and tube-bundle heat exchangers are set up respectively using FLUENT software, and the shell-side characteristics of heat transfer and pressure drop are simulated. The numerical results show that the enhanced heat transfer mechanism of helical rib is to generate helical flow, and the increased velocity and secondary flow caused by helical flow in the shell side can decrease boundary layer thickness, and promote fluid mixing between the main body and the boundary layer. The interaction of helical flow among heat transfer tubes can further promote heat transfer coefficient of heat exchanger. The helical angle of helical rib and Reynolds number exert a notable influence on shell-side Nusselt number and pressure drop. It is proposed that the helical angle and Reynolds number should be confined in a certain range. The numerical simulation results have better agreement with the experimental data.