Aug.2012,Vol.41,No.4
CHEMICAL ENGINEERING OF OIL & GAS
ABSTRACTS
Performance analysis on Methyldiethanolamine(MDEA) regeneration by vacuum membrane distillation
Mei Lei, Zhao Huijun, Zhao Shuhua(Jiangsu Key Laboratory of Oil & Gas Storage and Transportation Technology Changzhou University, Changzhou 213016,Jiangsu,China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp363～365,2012（ISSN 1007-3426, IN CHINESE）
Abstract: Vacuum membrane distillation is a widely used process, which has a series of advantages. It is also suitable for the regeneration process of MDEA. This paper introduces the reaction mechanism of MDEA and H2S, the relationship of solution regeneration temperature and solution flow rate on regeneration rate, as well as the influence of vacuum side vacuum degree on membrane flux. The results show that the regeneration temperature is the most important factor of regeneration rate. The increasing of regeneration temperature will significantly improve the regeneration rate. When the temperature is 100 ℃, the regeneration rate can reach 95%.
Keywords: vacuum membrane distillation,MDEA, regeneration temperature, regeneration rate
Cu-Bi2WO6 catalyst synthesized by hydrothermal method and its application in photo catalytic oxidation desulfurization
Wu Yufei1, Gao Xiaoming1,2, Fu Feng1, et al (1. College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan’an University, Yan’an 716000, Shaanxi, China；2. Department of Chemical Engineering, Northwest University, Xi’an 710069, Shaanxi, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp366～369,2012（ISSN 1007-3426, IN CHINESE）
Abstract: A type of visible light catalyst Cu-Bi2WO6 is prepared by hydrothermal method and characterized by XRD and UV-vis DRS. Thiophene in octane solution is used as the model compound, and the desulfurization activity of Cu-Bi2WO6 is researched by photo-catalytic oxidation in visible light. The effects of catalyst’s pH value, mass, irradiation time and air flow on the desulfurization efficiency are also investigated. The results show that the Cu-Bi2WO6 has a significant red-shift in the absorption band in the visible region, and the absorption intensity increases greatly for the composite catalyst. The catalyst exhibits the highest activity in neutral condition. When the amount of air is 300 mL/min, catalyst dosage is 0.5 mg/L, with the 400 W metal halide lamp irradiation for 180 min,the Cu-Bi2WO6 has a better photo-catalytic oxidation desulfurization effect, and the desulfurization rate can reach 97%.
Keywords: hydrothermal synthesis Cu-Bi2WO6, thiophene, photocatalysis, desulfurization
Application prospects of membrane separation technology treating unconventional natural gas
Cen Zhaohai(PetroChina Southwest Oil and Gasfield Company Development Department, Chengdu 610051, Sichuan, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp370～372,2012（ISSN 1007-3426, IN CHINESE）
Abstract: The unconventional natural gas is the main alternative resource of conventional natural gas. The rapid increase in demand for natural gas has provided a great space for the unconventional natural gas development. How to decrease the cost of supporting technology of purification of unconventional natural gas has became the main factors of restricting the development of unconventional natural gas. After nearly 50 years of development and practice, the technology of gas membrane separation is proved to be applied in the development of unconventional natural gas. Using the solid desulfurization + gas booster + membrane separation + adsorption deoxidation process in the gathering station can make the purified gas meet the product standards of GB 17820-1999. The process has certain advantages and development potential because of the simple flow, small-occupied area, low energy consumption, ease of skid-mounted and expansion.
Keywords: unconventional natural gas, membrane separation, purification, application prospects
Application of a high efficiency tray in natural gas desulfurization process
Ma Hong, Zhang Bing, Lin Changqing, et al.（Tianjin Chuangju Technology Co., Ltd., Tianjin 300130,China）.CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp373～377,2012（ISSN 1007-3426, IN CHINESE）
Abstract: Holding back fluid foaming higher energy consumption and unstable operation are easy to occur in the absorber and regenerator of natural gas amine desulfurization unit. Based on the analysis of reasons, solutions are put forward: valve trays of desulfurization absorber and regenerator can be replaced by CJST-trays, the technology reform had been put into practice. Results show that the desulfurization unit is running well, and the problems have been solved effectively.
Keywords: natural gas amine desulfurization, CJST-tray, technology reform
Development and performance evaluation of hydrocracking catalyst of chemical material type
Sun Famin, Li Xin, Lv Qian, et al（Daqing Center of PetroChina Research Institute of Petrochemistry, Daqing 163714, Heilongjiang,China）.CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp378～380,2012（ISSN 1007-3426, IN CHINESE）
Abstract: A kind of Mo-Ni hydrocracking catalyst of chemical material type is developed using small crystal USY as supports. The test results of the catalyst evaluated on a 200 mL single-stage hydrocracking unit show that C+5 liquid yield is 97.2 wt%，chemical product yield is 70.62 wt%, under the conditions that the material temperature is more than 177 ℃ and the conversion of distillate oil is 60 φ%. Meanwhile，the heavy naphtha with high aromatic potentiality of 40.7 wt％ is excellent reforming feedstock，and the tail oil with low BMCI value of 6.1 is superior ethylene cracking feedstock.
Keywords: hydrocracking, catalyst, small crystal USY, chemical material
Application of CT series catalysts on treating S Zorb flue gas in sulfur recovery unit
Jin Zhou1,Wu Zhanyong2(1.Refining Second Unit, Zhenhai Refinery & Chemical Co.,Ltd.,SINOPEC,Ningbo 315207, Zhejiang, China;2. PetroChina Ningxia Petrochemical Company, Yinchuan 750026, Ningxia, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp381～385,2012（ISSN 1007-3426, IN CHINESE）
Abstract: The application of the CT series catalysts in two sets of sulfur recovery units which processed S Zorb flue gas in Zhenhai Refining & Chemical Company are introduced in terms of catalyst activity, service life, the conversion of sulfur and the SO2 emission consistence of sulfur recovery unit. The operation for two years shows that operation parameters of the unit is regular, the catalyst maintains a high activity, the anti-sulfation and anti “oxygen leakage” property is good, the SO2 emission consistence of sulfur recycle unit which has treated S Zorb flue gas to meet the requirements of GB 16297-1996 Integrated emission standard of air pollutants.
Keywords: sulfur recovery unit, S Zorb regeneration flue gas, catalyst, oxygen leakage, service life
Process characteristics analysis of sour water stripping unit in Ningxia Petrochemical Company
Liu Yuming1, Zhang Haibin2,Dong Guangbin1(1. PetroChina Ningxia Petrochemial Company, Yinchuan 750026, Ningxia, China;2. SNCC Coal Chemical Industry Company, Lingwu 750411, Ningxia, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp386～389,2012（ISSN 1007-3426, IN CHINESE）
Abstract: This paper introduces the sour water sources and characteristics of 5000×103 t/a oil refining project in Ningxia Petrochemical Company. After analyzing the effects of degasification, deodorization,degreasing,etc. for the sour water in practical use, the process conditions have been improved on the basis of original design. Consequently, environmental pollution has been reduced. Compared with the following processes such as single tower or two towers steam-stripping and ammonia elimination by injecting alkali which are used to remove H2S and NH3 from sour water in domestic conventional refinery, the single tower steam-stripping process to remove ammonia by injecting alkali process is selected for oil refining section in Ningxia Petrochemical Company, by which not only NH3 and H2S in sour water are recycled, but also the treated water can be recirculated back into the atmospheric and catalytic cracking unit to save a lot of fresh water and demineralized water.
Keywords: sour water, tank within tank, single tower steam-stripping, ammonia removal by injecting alkali
Discussion of hydrogen production technology by methane in PTA plant
Wu Xiaoyuan(China Kunlun Contracting & Engineering Corporation, Beijing 100037, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp390～392,2012（ISSN 1007-3426, IN CHINESE）
Abstract: Based on the demand of hydrogen in PTA (pure terephthalic acid) plant, combining with the byproduct methane in sewage treatment unit of PTA plant, this paper briefly introduced the principles and processes of hydrogen production technology by methane. The analysis results showed that the application and promotion of hydrogen production technology by methane in PTA plant can achieve energy saving and emission reduction, as well as good economic and social prospects. Therefore, it has considerable prospects.
Keywords: PTA plant, sewage treatment unit, byproduct methane, hydrogen production technology
Methods and application of improving light hydrocarbon yield
Zhang Xianjun, Wang Lei, Xie Jun,et al(Northwestern Sichuan Gas District of PetroChina Southwest Oil & Gasfield Company, Jiangyou 621700, Sichuan, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp393～395,2012（ISSN 1007-3426, IN CHINESE）
Abstract: Aimed at the application situation of light hydrocarbon plant of northwestern Sichuan Gas District of PetroChina Southwest Oil & Gasfield Company, this paper deeply analyzed the factors affecting the light hydrocarbon yield. Then, a series of reform measures to improve the light hydrocarbon yield were proposed, which included expander amelioration, expansion rate adjustment, pressure of the seal gas control and opening degree of nozzle adjustment. The result showed that the obvious effect can be obtained after taking above measures.
Keywords: light hydrocarbon recovery，isentropic expansion, turboexpander, yield
Industrial application of JC-17 high efficient compound decarbonizer in natural gas to methanol device
Cui Xiaoqin1, Li Jing1, Chen Huian2 ,et al(1.School of Chemical Engineering, Qinghai University, Xining 810016,Qinghai, China; 2.Nengjing Technology Limited of Chengdu,Chengdu 610000,Sichuan, China）.CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp396～398,2012（ISSN 1007-3426, IN CHINESE）
Abstract: This paper introduced the laboratory contrast situation of high efficient decarbonizer JC-17 to traditional decarbonizer and the industrial application on CO2 recovery unit of 100×103 t/a natural gas to methanol device. The results show that JC-17 can reduce solvent consumption by 10% and increase CO2 yield by more than 10%.Further more, a number of indicators such as equipment corrosion, solvent resistant to degradation capacity, energy consumption and so on are obviously superior to traditional decarbonizer. The agent can not only fully develop the potential of flue gas CO2 recovery unit, make up the carbon inadequacy, but also raise economic benefits. Therefore, it provides a more advanced solvents selection.
Keywords: JC-17 high efficient decarbonizer, flue gas, CO2 absorption
New progress of natural gas to liquid oil (GTL) technology
Qian Bozhang, Zhu Jianfang（Shanghai Kingdom Information Technology Co., Golden-Autumn Scientific Propagation Co., Shanghai 200127, China）.CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp399～404,2012（ISSN 1007-3426, IN CHINESE）
Abstract: At present，the development and utilization of natural gas have been accelerated, natural gas to liquid oil (GTL) technology becomes an important way for high-quality use of natural gas. This article summarized the latest progress of natural gas to liquid oil technology abroad in recent years, it also introduced development of GTL technology in China, which can be a reference for GTL technology upgrading.
Keywords: natural gas，natural gas to liquid oil(GTL)， FT synthesis, technology progress
Application of corrosion monitoring system in Gaofeng gathering gas station
Gu Xikui1, Gu Tan1, Li Jing2, et al（1.Research Institute of Natural Gas Technology, PetroChina Southwest Oil and Gasfield Company, Chengdu 610213, Sichuan, China; 2.Natural Gas Division, PetroChina Tarim Oilfield Company，Kuala 841000, Xinjiang, China）.CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp405～407,2012（ISSN 1007-3426, IN CHINESE）
Abstract: Based on corrosion mechanism and main features of the acidic oil and gas fields, as well as the principle of corrosion monitoring techniques and field application experience, the corrosion electrochemical noise, resistance probe and hydrogen probe technology are integrated to be a comprehensive corrosion monitoring system, which was applied in Gaofeng gathering gas station. The information obtained by various corrosion monitoring techniques can be complemented and confirmed mutually, which greatly improves the capacity and reliability of the corrosion monitoring system to obtain various corrosion information.
Keywords: corrosion, monitoring, electrochemical noise, resistance probe, hydrogen probe
Corrosion analysis of oil pipe in injection exploitation of high temperature multicomponent thermal fluid
Sun Yongtao1, Fu Chaoyang2, Yang Xiulan3(1. China Oilfield Services Limited, Tianjin 300450, China; 2. School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;3. Sichuan Kehong Oil and Gas Engineering Co., Ltd., Chengdu 610213, Sichuan, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp408～410,2012（ISSN 1007-3426, IN CHINESE）
Abstract: Corrosion failure of oil pipe was happened during the injection exploitation of high temperature multicomponent thermal fluid. The corrosion datum was analyzed by grey relational method. The results showed that water content and CO2 partial pressure had the most notable effect on the corrosion of oil pipe, and flow velocity, temperature and O2 partial pressure had more remarkable effect. Aimed at the corrosion characteristics of oil pipe, the high temperature CO2 corrosion inhibitor with abrasion resistance should be chosen to reduce corrosion.
Keywords: multicomponent thermal fluid, corrosion, grey relational analysis, carbon dioxide, oxygen
Activation of the indigenous microorganism and field test in Zhan3 block
Liu Tao, Cao Gongze, Ba Yan, et al(Research Institute of Oil Production Technology, Shengli Oilfield Company, Sinopec, Dongying 257000, Shandong, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp411～414,2012（ISSN 1007-3426, IN CHINESE）
Abstract: The molecular biotechnology showed an important role in the petroleum microorganisms studying. The formation conditions of Zhan 3 block in Shengli oilfield were simulated by physical methods at high temperature and high pressure，and the activating effect of different nutrients on indigenous microorganisms was investigated by molecular biotechnology(DGGE). The results showed that the microbial population was changed obviously in the injected water and produced water when using the glucose, starch solution, corn steep liquor, cane sugar as the carbon source. In addition, based on the effect and the practicability, the glucose was better than other activating nutrients. In the experiment of single well huff and puff, the water was decreased obviously. Especially for Zhan 3-26 well, the water was decreased by 5%, the crude oil output was increased from 3.4 t to 10.4 t per day, and the effect of the microbial enhanced oil recovery (MEOR) was obvious.
Keywords: indigenous microorganisms, activating nutrients, DGGE, single well huff and puff
Research on depressurization and augmented injection for ultra low interfacial tension surfactants in low permeability reservoirs
Li Ruidong, Ge Jijiang, Li Guanghui, et al(School of Petroleum Engineering, China University of Petroleum, Qingdao 26655, Shandong, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp415～418,2012（ISSN 1007-3426, IN CHINESE）
Abstract: In order to solve the problem of high water injection pressure in Linpan low permeability reservoirs, lab experiments of low interfacial tension surfactants displacement with low permeability cores were carried out. The value of interfacial tension between alkanolamide（6501）/carboxyl betaineall（CBET）combination systems and Linpan oil can reach the order of 10-3 mN/m. A certain amount of crude oil was injected into cores to simulate pore jams by the residual oil and oil droplets in injection water. After pressure balance of water flooding，surfactant solutions were injected to investigate the depressurization ability, the results showed that 0.01% 6501-0.01% system had the best depressurization effect, and the depressurization rate was 19.56%.
Keywords: low permeability, water injection pressure, depressurization, alkanolamide, carboxyl betaineall
Performance evaluation and study of flooding control of foam gel in SZ 36-1 oilfield
Zhang Xiangchun, Zhang Junhui, Song Zhixue,et al(CNOOC Energy Technology & Service-Oilfield Engineering Research Institute, Tianjin 300452, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp419～421,2012（ISSN 1007-3426, IN CHINESE）
Abstract: Aimed at the needs to enhance oil recovery of the SZ36-1 offshore oil field which is a strong heterogeneity and high capacity channel heavy oil reservoir, authigenic gas foam gel flooding technology research was carried out. The impact on the foaming and foam stabilization performance was determined by the Waring-Blender mixing method. Performance evaluation of anti-salt, calcium and magnesium resistance, heat resistance were carried out. The formulations of foam gel was determined, that is, 3000 mg/L polyacrylamide +300 mg/L cross-linking agent+1000 mg/L stabilizer + 3000 mg/L foaming agent +5% authigenic gas. The experiments of plugging, flooding, solvable performance evaluation were carried out. Results showed that under the SZ36-1 oil field reservoir conditions, blocking ratio of the system was greater than 95%; the efficiency of oil displacement improved by more than 25% than water flooding, and the system solvable rate was more than 90%.
Keywords: foam gel, oil field, blocking ratio, oil displacement efficiency, SZ36-1
Study on the standard test method for determination of the sulfur-containing compounds in natural gas
Lei Hongqin1, Zhang Xulong2, Hu Jianmin1,et al(1. Comprehensive Technical Service centre of Yili Entry-Exit Inspection and Quarantine Bureau, Yili 835000, China; 2. Comprehensive Technical Service Centre of Xinjiang Entry-Exit Inspection and Quarantine Bureau, Urumqi 830063, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp422～425,2012（ISSN 1007-3426, IN CHINESE）
Abstract: Sulfur-containing compounds especially H2S can greatly effect on the transportation, storage and use safety of natural gas. So, it is an absolutely necessary project for measuring natural gas content, which has a very important significance. The summary is made about the present domestic and foreign standard test method for determination of the sulfur-containing compounds in natural gas. Then different standards are compared at different aspects, such as the detection principle, the detection range and so on. At last, some suggestions are presented about the selection of standards for determination of the sulfur content of natural gas on the basis of our practical experience about Central Asia pipeline gas, in order to provide a useful reference for the related study.
Keywords: natural gas, sulfur-containing compounds, standard test method
Effect of relative molecular mass of drag reduction polymer and its distribution on performance
Zhao Mengqi, Tian Yuchuan, Ismayil Nurulla(Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, Xinjiang, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp426～428,2012（ISSN 1007-3426, IN CHINESE）
Abstract: A series of oil-soluble polymers with ultrahigh relative molecular mass were synthesized by bulk polymerization utilizing Cp2ZrCl2/Ziegler-Natta as catalyst. The relative molecular mass of polymer and its distribution were characterized by GPC. Influences of relative molecular mass of polymer and its distribution on limiting viscosity had been researched. The results showed when frictional reducing polymer’s relative molecular mass arrives at a certain value, the effect of drag reduction mostly depends on polymeric polydispersity index; enhancing polymeric drag reduction performance via only increasing polymeric relative molecular mass is not an effective method. The high-efficient drag reduction polymers have not only more relative molecular mass, but also wider relative molecular mass distribution.
Keywords: Cp2ZrCl2/Ziegler-Natta catalyst, relative molecular mass and its distribution, limiting viscosity, drag reduction polymer
Study on polymer properties in polymer-containing sewage
Liu Zhonghe(Technology and Development Institute of Daqing Oilfield Chemical Industry Co. Ltd., Daqing 163453, Heilongjiang, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp429～431,2012（ISSN 1007-3426, IN CHINESE）
Abstract: A certain concentration of polymer is contained in the treated sewage of polymer flooding produced liquid. The treatment of polymer-containing sewage is a problem in field. Preparing the polymer solution using sewage instead of fresh water can solve this problem very well. By this way, it has a certain effect to polymer viscosity. Can the polymer solution be affected by the polymer retained in the waste water? The factors affecting polymer viscosity were found out through the determination of hydrolysis degree, relative molecular mass, form in water, sewage viscosity of polymer flooding produced liquid and the analysis of sewage water quality. Meanwhile, factor analysis of hydrolysis degree increasing and relative molecular mass decreasing of polymer was carried out. Comparing with fresh water, Mg2+, Na+, Ca2+ content is higher in the waste water, and it is the most significant for bacterial content to exceed standard, which should be the main reason for the loss of polymer viscosity.
Keywords: polymer-containing sewage, polymer, polymer solution prepared by oil produced water, viscosity
Technology progress of waste water resource utilization in Shengli oilfield
Du Chunan1, Ma Li2, Wu Xiaoling1,et al (1.Sinopec Shengli Oil Production Research Institute, Dongying 257000, Shandong, China; 2. Sinopec Shengli Oilfield Exploration Department, Dongying 257000, Shandong, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp432～434,2012（ISSN 1007-3426, IN CHINESE）
Abstract: To solve the contradiction between the difficult disposal of waste water and consumption of fresh water, research and field experiments on the integrated technology of biochemical treatment and membrane filtration were carried out. In view of the problem that the quality of reinjection water in low permeability reservoir is required strictly, the fine waste water treatment process, based on biochemical treatment and fine filtration, is experimentally applied. The quality of the treated water can meet A1 level standard. Aimed at the problem that much freshwater are consumed by heavy oil thermal recovery boiler and preparing polymer solution, a biological contact oxidation-ultra filtration-reverse osmosis integrated process was used for the advanced treatment of produced waste water. Experimental results show that the integrated technology of biochemical treatment and membrane filtration can realize the reuse of oilfield waste water.
Keywords: oilfield waste water, biological contact oxidation, membrane filtration, resource utilization
Numerical simulation of H2S diffusion for sour natural gas well after uncontrolled blowout for 15 minutes
Wang Linyuan, Deng Hongbo, Li Huifang，et al(Chemistry and Chemical Institute, Southwest Petroleum University, Chengdu 610500, Sichuan, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp435～437,2012（ISSN 1007-3426, IN CHINESE）
Abstract: According to the actual conditions of oil and gas well, physical and geometric model by numerical simulation are established. To analyze H2S concentration distribution after uncontrolled blowout for 15 min, the environmental wind speed and the initial blowout jet speed are mainly considered. The results show that the wind speed above 2 m/s can form a similar elliptical area along the direction of the wind deflection due to the H2S diffusion, and the press extent increases with the wind speed raising; when the initial gas jet velocity is certain, the spread area of H2S increases with the wind speed raising, but the approximate-oval high concentration area is presented increases at first then decreases trend; When the environmental wind speed is certain, the H2S diffusion area will increase with the increasing of initial gas jet speed; In the higher jet speed conditions, H2S diffusion will appear eddy current, then “bounce” phenomenon will also appear after H2S spreading to the distant ground .
Keywords: blowout, H2S, concentration distribution, diffusion, numerical simulation
Feasibility study on acid proof reinforced concrete structure adopted for liquid sulfur pool
Chen Jie1, Zhang Xingming2, Bi Xiao3, et al(1. School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China; 2. Chongqing Natural Gas Purification Plant General, PetroChina Southwest Oil and Gasfield Company,Chongqing 401259, China; 3. Research Institute of Natural Gas Technology, PetroChina Southwest Oil and Gasfield Company,Chengdu 610213, Sichuan, China).CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp438～441,2012（ISSN 1007-3426, IN CHINESE）
Abstract: The liquid sulfur pool of sulfur recovery unit in natural gas processing plant is usually built by steel reinforced concrete structure，due to long-term corrosion by acidic chemicals such as liquid sulfur, its service life is seriously impacted. According to the comparison and analysis of many kinds of conventional reinforced concrete, acid proof reinforced concrete has better performances in mechanical property, acid resistance and heat resistance, which makes it more suitable for the liquid sulfur pool. Choosing acid-resistant ceramic brick as inner anti-corrosion layer material, and use appropriate heat insulation acid casting material to cast the thermal insulation layer can strengthen the anti-corrosion and thermal insulation performance of the liquid sulfur pool, which can meet the use requirement of liquid sulfur pool in the gas-processing plant.
Keywords: gas-processing plant, liquid sulfur pool, acid-proof reinforced concrete, inner anti-corrosive layer
The control technology for mercury contamination of Hg-containing natural gas
Jiang Hong, Wang Yang（Southwest Petroleum University, Chengdu 610500, Sichuan, China）.CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp442～444,2012（ISSN 1007-3426, IN CHINESE）
Abstract: Mercury corrosion threatens the gas processing equipment. In the worldwide, mercury leak is continued and difficult to control，it has brought huge economic losses and serious environmental damage. With the development of China’s natural gas industry quality，health，safety and environment (QHSE) management system，mercury as the harmful element in natural gas will surely be obtained more and more attention. The toxicity and corrosion of mercury， principles and methods of mercury removal are studied, meanwhile, the mercury pollution control countermeasures are emphasized，which will be important for the safe and reasonable development of mercury-containing gas , and can guide mercury pollution prevention and control.
Keywords: mercury-containing natural gas, mercury contamination, corrosive, mercury removal，harm, control technology, clean, physical protection
Preparation and characterization of boron-containing inorganic organic polymer coagulant
Zhang Tailiang1, Li Long2, Zhao Deyin1, et al(1.Chemistry and Chemical Institute, Southwest Petroleum University, Chengdu 610500, Sichuan, China;2.Research Institute of Petroleum Exploration and Development,PetroChina Southwest Oil and Gasfield Company,Chengdu 610050,Sichuan,China)）.CHEMICAL ENGINEERING OF OIL & GAS, VOL.41, NO.4,pp445～447,2012（ISSN 1007-3426, IN CHINESE）
Abstract: This paper introduced the source and composition of waste liquid of oil and gas production, and problems existed during coagulation treatment. Based on the mechanism of coagulant combined with the characters of waste liquid, we prepared boron-containing polynuclear inorganic polymer coagulant (BPSAF), and then synthesized a certain boron-containing polynuclear inorganic-organic polymer coagulant (CPC) by introducing AM and DMDAAC, which contains both polynuclear inorganic polyvalent ions and organic polymer chain, and has good stability. Compared with formal coagulant, CPC showed better coagulation effects, and better adaptability to water quality. We also analyzed BPSAF, CPC and raw materials mixture by FTIR, SEM and X-ray diffraction, and the results showed that the CPC prepared is not a mixture of raw materials, but a novel polymer.
Keywords: boron-containing polynuclear,inorganic-organic, coagulant preparation, characterization
