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加氢裂化理论创新与实践

石油炼制与化工 2024年第1期55卷 164-170页

作者：范思强张通王继峰方向晨侯栓弟中石化(大连)石油化工研究院有限公司辽宁大连116000

中石化(大连)石油化工研究院有限公司通过深入研究烃类分子多相催化反应过程,发现烃分子的诱导偶极矩和反应中间体碳正离子的稳定性是影响烃类分子吸附和反应的关键因素,并在此基础上提出渐次反应理论,用于指导加氢裂化工艺与催化材料... 详细信息

中石化(大连)石油化工研究院有限公司通过深入研究烃类分子多相催化反应过程,发现烃分子的诱导偶极矩和反应中间体碳正离子的稳定性是影响烃类分子吸附和反应的关键因素,并在此基础上提出渐次反应理论,用于指导加氢裂化工艺与催化材料的开发与升级。渐次反应理论的应用避免了低效无秩序反应的发生,使得加氢裂化反应过程科学有序,从而在低能耗、低氢耗的反应环境下提升了加氢裂化过程的产品选择性与产品质量,有效推进中国炼油结构调整,实现科学有序的“油转化”、“油转特”转型发展。

关键词：加氢裂化渐次反应吸附催化反应转型升级

我国石化储罐VOCs安全高效深度减排、回收和热氧化技术进展

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化工进展 2024年第4期43卷 2063-2076页

作者：刘世达王海燕侯栓弟刘忠生廖昌建王宽岭中石化(大连)石油化工研究院有限公司辽宁大连116045 大连理工大学化工海洋与生命学院辽宁大连116081

全面总结了石化储罐VOCs产排机理、排放特征以及VOCs减排、回收和热氧化技术进展,并提出了意见和建议,希望对我国石化储罐VOCs深度减排有所裨益。石化储罐除大小呼吸产气外,还有高温重油储存热裂解等产气现象。在计算储罐排气中可燃物... 详细信息

全面总结了石化储罐VOCs产排机理、排放特征以及VOCs减排、回收和热氧化技术进展,并提出了意见和建议,希望对我国石化储罐VOCs深度减排有所裨益。石化储罐除大小呼吸产气外,还有高温重油储存热裂解等产气现象。在计算储罐排气中可燃物浓度时不应忽视硫化氢、甲烷、氢气、氨等组分。目前,中美储罐VOCs管控都以选择浮顶罐等源头减排为主,以储罐使用过程控制和排放气末端治理为辅,我国应适时修订现行标准,以适应越来越严的环保要求。核算得出2019年我国有机液体储罐VOCs排放量为(39.2~90.4)×10^(4)t,主要来自石化企业,建议将粗柴油、粗汽油、粗航煤、蜡油、燃料油、渣油等中间产品罐或重油罐与苯、甲苯、二甲苯、甲醇等储罐一起列为优先管控对象。建议我国开展石化储罐VOCs深度减排,包括源头减排、过程控制和末端治理,内浮顶罐内置气袋有可能成为继浮盘之后又一重要的源头减排技术;低温柴油吸收与吸附、冷凝相比,在处理含硫量较高的粗汽油、粗柴油、高温重油等储罐废气上具有优势。总体上,我国石化储罐外排VOCs治理正在从回收向回收+热氧化(催化氧化、蓄热氧化、焚烧炉、工艺加热炉、锅炉)转变,控制热氧化单元出口非甲烷总烃小于20mg/m^(3)。

关键词：石化储罐挥发性有机物产气机理减排回收氧化安全

维普期刊数据库博看期刊

Study of Macro-Mixing in a Microreactor

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China Petroleum Processing & Petrochemical Technology 2023年第4期25卷 117-126页

作者： Cao Huili Tang Xiaojin Bao Di hou shuandi SINOPEC Research Institute of Petroleum Processing Co. Ltd.Beijing 100083 SINOPEC(Dalian)Research Institute of Petroleum and Petrochemicals Co. Ltd.Dalian 116045

The transfer rate between fluids in a microreactor is directly influenced by the mixing within the reactor, which subsequently impacts the reaction rate. This paper investigates the flow behavior and macro-mixing performance in a microreactor. First, the flow performance of the Ehrfeld Miprowa microreactor is studied. Cold experiments are conducted to examine fundamental flow laws and verify the accuracy of the chosen computational fluid dynamics simulation model.Subsequently, macro-mixing performance in the microreactor, both with and without internal components, is investigated through both experiment and simulation. A bromocresol violet–NaOH–H2SO4 system is utilized in the macro-mixing experiments, which explore the effects of flow rate and internal components on macro-mixing. The Navier–Stokes equation is adopted as the computational model for macro-mixing simulations, which also consider the mass transfer and diffusion of tracer. The simulation results are in good agreement with the experimental results. Both experimental and simulation results demonstrate that the presence of internal components in the microreactor enhance its macro-mixing performance.

关键词： microreactor flow model macro-mixing

Influence of Gas Density on Hydrodynamics in a Bubble Column

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China Petroleum Processing & Petrochemical Technology 2014年第1期16卷 66-70页

作者： Tang Xiaojin hou shuandi Zhang Zhanzhu Research Institute of Petroleum Processing SINOPEC

Two kinds of gases were used to investigate the influence of gas density on the hydrodynamic characteristics in a bubble column. It can be found out that higher gas density leads to smaller bubble diameter and the flow patterns are different for the both gases. Energy balance mechanisms are analyzed by considering the gas density difference. Models were developed to predict the average bubble diameter with good accuracy.

关键词： bubble column hydrodynamics,gas density

Study on Separation of Water and Alumina Fine Particles by Cross-Flow Microfiltration

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China Petroleum Processing & Petrochemical Technology 2017年第2期19卷 96-103页

作者： Zheng Bo Tang Xiaojin hou shuandi Zong Baoning SINOPEC Research Institute of Petroleum Processing Beijing 100083

A cross-flow microfiltration process had been developed to separate alumina fine particles from the suspension using a stainless steel membrane tube with a pore size of 10 μm. The influence of cross-flow velocity and trans-membrane pressure on the permeate flux and the solid holdup in permeate had been investigated. It was found that both the permeate flux and the solid holdup in permeate decreased with time. Moreover, the permeate flux increased with an increasing transmembrane pressure but the influence of cross-flow velocity on the permeate flux was quite complex. Both the permeate flux and the solid holdup in permeate in long term filtration had been studied. The operation of cross-flow microfiltration could be carried out stably for 10 hours with the permeate flux values ranging from 520.5 to 936 L/(m^2·h) at rs=1%, while it could continue in 10 hours with the permeate flux values ranging from 226 to 432 L/(m^2·h) at rs=5%. The solid holdup in permeate had been less than 10 mg/L during the whole operating cycle.

关键词： cross-flow microfiltration permeate flux rejection rate alumina fine particles

Modeling of Isobutane/Butene Alkylation Using Solid Acid Catalysts in a Fixed Bed Reactor

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China Petroleum Processing & Petrochemical Technology 2016年第2期18卷 63-69页

作者： Liu Zheng Tang Xiaojin Hu Lifeng hou shuandi Research Institute of Petroleum Processing SINOPEC

A dynamic mass transfer model of isobutane/butene alkylation over solid acid catalysts in a fixed bed reactor was established. In the model, a modified equation for the relationship between point activity and effective diffusion coefficient was proposed. It is found that the simulation results fit the experimental data well and the breakthrough time of the bed layer is predicted accurately. By modeling the alkylation process, the time-space distribution of butene and point activity profiles of catalysts can be obtained. Furthermore, the reasons for the deactivation of solid acid catalysts were investigated. It indicates that the main reason for the deactivation of catalysts is the site coverage near the inlet of the reactor, while it is ascribed to the steric effect in the region far away from the inlet.

关键词： mass transfer model isobutane/butene alkylation fixed bed reactor deactivation internal diffusion

Molecular Simulation of Naphthenic Acid Removal on Acidic Catalyst II. Experimental results of catalytic decarboxylation over acidic catalysts

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China Petroleum Processing & Petrochemical Technology 2008年第2期10卷 29-33页

作者： Fu Xiaoqin Tian Songbai hou shuandi Longjun Wang Xieqing Ningbo Environmental Monitoring Center Ningbo Research Institute of Petroleum Processing Beijing 100083

The energy barriers of thermal decarboxylation reactions of petroleum acids and catalytic decar-boxylation reactions of Brnsted acid and Lewis acid were analyzed using molecular simulation technology. Compared with thermal decarboxylation reactions of petroleum acids, the decarboxylation reactions by acid catalysts were easier to occur. The decarboxylaton effect by Lewis acid was better than Brnsted acid. The mechanisms of catalytic decarboxylation over acid catalyst were also verified by experiments on a fixed bed and a fluidized bed, the experimental results showed that the rate of acid removal could reach up to 97% over the acidic catalyst at a temperature above 400 .

关键词：石油类环烷酸分子模拟去碳酸基

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抗水性天然气汽车尾气催化氧化催化剂研发

石油炼制与化工 2023年第1期54卷 44-51页

作者：刘世达侯栓弟中石化(大连)石油化工研究院有限公司辽宁大连116045

制备了系列Pd/Al_(2)O_(3)基天然气汽车尾气净化催化剂并对其进行了改性处理,通过N_(2)吸附-脱附、X射线衍射、热稳定性测试、催化剂活性评价等手段考察了水热处理、焙烧、稀土金属改性等处理过程对催化剂活性和抗水性能的影响。结果表... 详细信息

制备了系列Pd/Al_(2)O_(3)基天然气汽车尾气净化催化剂并对其进行了改性处理,通过N_(2)吸附-脱附、X射线衍射、热稳定性测试、催化剂活性评价等手段考察了水热处理、焙烧、稀土金属改性等处理过程对催化剂活性和抗水性能的影响。结果表明:水热处理可以在催化剂表面产生大量羟基基团,进而在后续的焙烧过程中脱离形成大量氧缺陷位,促进金属活性中心的分散,增强活性中心与金属表面的相互作用;焙烧温度对水热处理后催化剂的活性有较大影响,随着焙烧温度的升高,经焙烧制得催化剂的比表面积和孔体积都明显增大;稀土金属助剂的引入不会明显改变催化剂的孔道结构,但是可以在一定程度上增强催化剂的水热稳定性;以丁醇为溶剂,经水热处理、650℃焙烧、质量分数2%镧改性制得了性能最优的1%Pd/HTT-2La-B-Al_(2)O_(3)催化剂,其在305℃下催化甲烷氧化反应的转化率达90%。

关键词：天然气汽车尾气甲烷催化氧化水热处理焙烧温度助剂改性

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汽油催化改质反应过程数值模拟

化工学报 2007年第3期58卷 623-629页

作者：侯栓弟石油化工科学研究院北京100083

在汽油催化反应动力学模型和气固两相流动模型的基础上,建立了汽油改质反应过程流动-反应耦合模型。针对不同的转化反应器构型(提升管、提升管-床层反应器),对汽油改质过程进行了数值模拟。模拟结果表明,对提升管反应器而言,汽油经过低... 详细信息

在汽油催化反应动力学模型和气固两相流动模型的基础上,建立了汽油改质反应过程流动-反应耦合模型。针对不同的转化反应器构型(提升管、提升管-床层反应器),对汽油改质过程进行了数值模拟。模拟结果表明,对提升管反应器而言,汽油经过低温改质反应后,烯烃含量可以从35.1%降低到18%左右,烯烃降低幅度可达48%,汽油中烯烃主要转化为异构烷烃。另外,随着反应温度的升高,汽油转化反应中的裂化反应增强,导致汽油收率下降。对于提升管-床层反应器而言,汽油中的烯烃含量可以降得更低,在床层空速4时,烯烃含量可以降低到5%左右,汽油收率为80%左右。

关键词：数值模拟流动反应模型催化裂化提升管