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影响催化裂解装置低碳烯烃收率的因素分析及优化
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作者 路军晓 刘家凯 吕喆 《中国设备工程》 2024年第14期95-97,共3页
催化裂解装置低碳烯烃收率的因素分析及优化是石油化工企业在生产过程中必须考虑的重要问题。主要包括催化剂性能改进、原料性质调整、操作条件控制等措施。希望能给相关人员以借鉴和帮助,提升我国石化行业的竞争力。从催化裂化装置低... 催化裂解装置低碳烯烃收率的因素分析及优化是石油化工企业在生产过程中必须考虑的重要问题。主要包括催化剂性能改进、原料性质调整、操作条件控制等措施。希望能给相关人员以借鉴和帮助,提升我国石化行业的竞争力。从催化裂化装置低碳烯烃收率、催化剂使用寿命和催化剂装填密度这三个方面进行了详细阐述,并结合实例进行说明。 展开更多
关键词 裂解装置 烯烃 因素分析
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PAN原丝直径对碳纤维收率的影响 被引量:4
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作者 薛亚俊 张明 +2 位作者 顾红星 张淑斌 齐晶瑶 《复合材料科学与工程》 CAS 北大核心 2021年第3期94-98,共5页
对不同预氧化条件下两种直径PAN原丝的碳纤维收率进行了分析,并利用TG、XPS、NMR、Raman等测试表征方法,深入讨论了原丝直径对其碳纤维收率的影响。结果表明:预氧化温度越高,PAN原丝的碳纤维收率越高,相同工艺条件下粗直径PAN原丝的碳... 对不同预氧化条件下两种直径PAN原丝的碳纤维收率进行了分析,并利用TG、XPS、NMR、Raman等测试表征方法,深入讨论了原丝直径对其碳纤维收率的影响。结果表明:预氧化温度越高,PAN原丝的碳纤维收率越高,相同工艺条件下粗直径PAN原丝的碳纤维收率高于细直径原丝的碳纤维收率,粗直径PAN原丝的热失重一直低于细直径原丝的热失重,细直径PAN预氧丝的预氧化程度高于粗直径PAN原丝的预氧化程度,而不同直径预氧丝表面元素及碳纤维表面微晶结构无差异。 展开更多
关键词 PAN原丝 直径 预氧化 碳收率 复合材料
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抗焦剂对粘胶基碳纤维碳化收率及抗拉强度影响因素的研究 被引量:2
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作者 王秀春 杨金叶 刘茵 《高科技纤维与应用》 CAS 2007年第5期21-24,共4页
通过实验研究了抗焦剂在粘胶基碳纤维生产过程中对碳化收率、抗拉强度的影响。实验表明:经浓度为5%的磷酸氢二铵处理后的粘胶原丝,其碳化收率最高,抗拉强度最大。
关键词 抗焦剂 粘胶基纤维 抗拉强度
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硫酸催化淀粉基碳材料的碳化工艺研究 被引量:1
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作者 王永垒 李海云 +2 位作者 方红霞 陆露露 彭志翔 《化工新型材料》 CAS CSCD 北大核心 2015年第8期190-191,共2页
以淀粉为碳源,硫酸作为催化剂,借助水热碳化的方法制备出了淀粉基碳材料。研究了硫酸的浓度、碳化温度及碳化时间对淀粉基胶体碳收率的影响。并通过红外光谱、热重分析及扫描电镜等手段对淀粉基碳的化学特性进行了表征。
关键词 淀粉 硫酸 水热 碳收率 制备
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水热碳化法合成蔗糖基碳材料的工艺研究 被引量:3
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作者 李海云 王永垒 +3 位作者 许涛 朱梦泽 徐叶平 吴家婷 《齐齐哈尔大学学报(自然科学版)》 2018年第5期47-49,53,共4页
研究了以硫酸为催化剂的水热碳化法对蔗糖碳源进行碳化的过程,优化了硫酸溶液浓度、碳化反应温度以及碳化反应时间对蔗糖基碳材料收率的影响,获得最佳的碳化工艺条件。最后,通过红外光谱、热重分析和扫描电镜分析了蔗糖基碳材料的化学... 研究了以硫酸为催化剂的水热碳化法对蔗糖碳源进行碳化的过程,优化了硫酸溶液浓度、碳化反应温度以及碳化反应时间对蔗糖基碳材料收率的影响,获得最佳的碳化工艺条件。最后,通过红外光谱、热重分析和扫描电镜分析了蔗糖基碳材料的化学特性及其碳化机理。 展开更多
关键词 蔗糖 硫酸 水热 碳收率
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硫酸催化下果糖基碳材料的制备和表征
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作者 王永垒 李海云 +1 位作者 方红霞 周培培 《化工新型材料》 CAS CSCD 北大核心 2015年第12期107-108,共2页
以果糖为碳源,硫酸作为催化剂,在低温条件下通过水热碳化的方法制备出了果糖基碳。研究了硫酸的浓度、碳化温度及碳化时间对果糖基胶体碳收率的影响,并得到了最佳的碳化工艺条件。通过红外光谱、热重分析及扫描电镜等手段对果糖基碳的... 以果糖为碳源,硫酸作为催化剂,在低温条件下通过水热碳化的方法制备出了果糖基碳。研究了硫酸的浓度、碳化温度及碳化时间对果糖基胶体碳收率的影响,并得到了最佳的碳化工艺条件。通过红外光谱、热重分析及扫描电镜等手段对果糖基碳的化学特性进行了表征。 展开更多
关键词 果糖 水热 硫酸 碳收率 制备
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CO、CO_(2)及其混合物加氢转化制甲烷的热力学平衡研究
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作者 王晗 郭淑佳 +5 位作者 秦张峰 李志凯 王国富 董梅 樊卫斌 王建国 《燃料化学学报(中英文)》 EI CAS CSCD 北大核心 2024年第10期1453-1461,共9页
由CO和CO_(2)加氢制甲烷是现今氢能储存及燃料和化学品可持续生产的有效途径之一,但目前对该反应过程(尤其是针对CO和CO_(2)混合物加氢)的一些细节尚不明晰。为此,作为前期有关CO和CO_(2)加氢制烃和醇研究工作的补充,本工作对CO和CO_(2)... 由CO和CO_(2)加氢制甲烷是现今氢能储存及燃料和化学品可持续生产的有效途径之一,但目前对该反应过程(尤其是针对CO和CO_(2)混合物加氢)的一些细节尚不明晰。为此,作为前期有关CO和CO_(2)加氢制烃和醇研究工作的补充,本工作对CO和CO_(2),尤其是两者混合物的加氢制甲烷反应过程进行了热力学分析。结果证实,与单独CO或CO_(2)相比,两者混合物加氢制甲烷更为合适,总碳基甲烷收率可作为评估甲烷合成反应过程效率的重要指标。CO加氢的甲烷平衡收率比CO_(2)加氢的高,而CO和CO_(2)混合物加氢的总碳基甲烷平衡收率位于两者之间;对于CO和CO_(2)混合物加氢,尽管CO和CO_(2)的平衡转化率随进料组成不同会有很大的变化,但其总碳基甲烷平衡收率随着原料中CO_(2)/(CO+CO_(2))物质的量比的增大而线形降低。整体上看,在温度低于400℃和压力高于0.1 MPa时,无论是CO、CO_(2)、还是两者混合物的化学计量比加氢,其总碳基甲烷平衡收率均高于85%。这些结果无疑对高效CO和CO_(2)加氢制甲烷催化剂研制及反应过程的设计和操作优化有重要的参考价值。 展开更多
关键词 热力学平衡 CO_(2)加氢 CO加氢 甲烷化 CO和CO_(2)混合物
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水煤气变换反应作用下的CO和CO_(2)混合物加氢转化制烃和醇--热力学平衡研究 被引量:3
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作者 郭淑佳 王晗 +5 位作者 秦张峰 李志凯 王国富 董梅 樊卫斌 王建国 《燃料化学学报(中英文)》 EI CAS CSCD 北大核心 2023年第4期482-491,共10页
受水煤气变换反应(或其逆反应)的干预,CO(或CO_(2))加氢反应制烃类或醇类化合物经常会遭遇较高的CO_(2)(或CO)选择性,而目标产物烃和醇的选择性往往较低,这使得对相关反应过程的评估显得非常混乱。为此,本工作对水煤气变换反应作用下的C... 受水煤气变换反应(或其逆反应)的干预,CO(或CO_(2))加氢反应制烃类或醇类化合物经常会遭遇较高的CO_(2)(或CO)选择性,而目标产物烃和醇的选择性往往较低,这使得对相关反应过程的评估显得非常混乱。为此,本工作对水煤气变换反应作用下的CO、CO_(2)及其混合物的加氢转化制烃(以乙烯为例)和醇(以甲醇为例)反应进行了详细的热力学研究。结果表明,对于CO(或CO_(2))加氢反应,水煤气变换(或逆水煤气变换)反应作为连接CO和CO_(2)的连通器,虽然会给CO(或CO_(2))的平衡转化率带来很大的改变并生成大量的CO_(2)(或CO),但其对目标醇和烃产物的碳基平衡收率影响相对较小。CO加氢反应的烃醇产物的碳基平衡收率比CO_(2)加氢反应的高,而CO和CO_(2)混合物加氢的烃醇产物的总碳基平衡收率位于两者之间。对于CO和CO_(2)混合物加氢,尽管CO或CO_(2)的平衡转化率随原料组成的不同有较大幅度的变化,但烃醇产物的总碳基平衡收率变化较为简单,即随着CO_(2)/(CO+CO_(2))摩尔比的增大而线形降低。鉴于CO或CO_(2)加氢过程的尾气均为CO和CO_(2)混合物,用CO和CO_(2)混合物加氢制烃醇或许更为有利;无论CO、CO_(2)还是其混合物的加氢过程,都应以目标产物的碳基总收率作为评估指标。 展开更多
关键词 热力学平衡 CO_(2)加氢 CO加氢 水煤气变换 甲醇 乙烯 CO和CO_(2)混合物
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MTO/MTP技术的研发现状及应用前景 被引量:19
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作者 陈腊山 《化肥设计》 CAS 2008年第1期3-6,共4页
介绍了由甲醇制取低碳烯烃的工艺技术(MTO/MTP);从催化剂的活性、选择性方面论述了MTO/MTP工艺催化剂的碳基收率和使用寿命;介绍了国内外该工艺技术的研发进展、工艺流程和使用现状;分析了由甲醇制取烯烃在中国的生产应用前景;指出在开... 介绍了由甲醇制取低碳烯烃的工艺技术(MTO/MTP);从催化剂的活性、选择性方面论述了MTO/MTP工艺催化剂的碳基收率和使用寿命;介绍了国内外该工艺技术的研发进展、工艺流程和使用现状;分析了由甲醇制取烯烃在中国的生产应用前景;指出在开发出烯烃收率高、抗积炭能力强、耐磨损的催化剂后,我国MTO/MTP催化反应工艺将有望实现工业化。 展开更多
关键词 MTO(methanol to olefin)/MTP(methanol to propylene)催化反应工艺 甲醇 烯烃 制取 催化剂
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Absorption Rate of CO_2 into MDEA Aqueous Solution Blended with Piperazine and Diethanolanline 被引量:3
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作者 张旭 杨燕华 +1 位作者 张成芳 王军 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2003年第4期408-413,共6页
Absorption rate of CO2 into aqueous solution of N-methyldiethanolamine (MDEA) blended with diethanolamine (DEA) and piperazine (PZ) was studied and a kinetic model was established. It is shown that homogeneous activat... Absorption rate of CO2 into aqueous solution of N-methyldiethanolamine (MDEA) blended with diethanolamine (DEA) and piperazine (PZ) was studied and a kinetic model was established. It is shown that homogeneous activation mechanism could explain this absorption process. The absorption rate coefficients of carbon dioxide into MDEA aqueous solution blended with DEA, PZ or DEA+PZ were compared with each other. The results demonstrated that the different activation effect of DEA, PZ and DEA+PZ on the carbon dioxide absorption comes from the difference in CO2 combination rate, transport of PZ and DEA to MDEA and the regeneration rate of PZ and DEA. 展开更多
关键词 absorption kinetics AT-methyldiethanolamine PIPERAZINE DIETHANOLAMINE
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Potassium superoxide oxygen generation rate and carbon dioxide absorption rate in coal mine refuge chambers 被引量:4
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作者 Gao Na Jin Longzhe +3 位作者 Hu Haohao Huang Xiao Zhou Li Fan Linyu 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2015年第1期151-155,共5页
The effects of the molding pressure of a KO2 oxygen plate and the initial concentration of CO2 on the oxygen generation rate, the oxygen generation efficiency, and the carbon dioxide absorption rate were studied using... The effects of the molding pressure of a KO2 oxygen plate and the initial concentration of CO2 on the oxygen generation rate, the oxygen generation efficiency, and the carbon dioxide absorption rate were studied using a YES-300 hydraulic press to alter the pressure when forming the oxygen plate used in a coal mine refuge chamber. In addition, changes in the initial concentration of CO2 used in the closed- box model were made by adjusting the CO2 supply system, and a CD-7 multi-function parameter instrument was employed to monitor and record the changes of O2 and CO2 concentration in the closed-box model. Results indicate that the oxygen generation rate of KO2 oxygen plates, the oxygen generation efficiency, and the carbon dioxide absorption rate decrease when there is an increase in the pressure used to mold the oxygen plates, but those values increase when the initial CO2 concentration increases. When the initial concentration of CO2 in the dosed-box model is 3.5% and the forming pressure is 10 kN, the average oxygen generation rate of 15 g KO2 oxygen plate is 11.88 ×10^-3 L/min, the oxygen generation efficiency is 80.3%, and the average CO2 absorption rate is 11.0 × 10^-3 L/min. Compared with the condition where the initial CO2 concentration is 1.5%, the results show that average oxygen genera- tion rate of oxygen plates increases by 88,9%, the oxygen generation efficiency increases by 88.9%, and the CO2 absorption rate increases by 100%. 展开更多
关键词 Potassium superoxideOxygen generation rateOxygen generation efficiencyCarbon dioxide absorption rateConcentration
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Two-step flotation recovery of iron concentrate from Donganshan carbonaceous iron ore 被引量:5
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作者 印万忠 韩跃新 谢锋 《Journal of Central South University》 SCIE EI CAS 2010年第4期750-754,共5页
The flotation of pure and natural carbonaceous iron ore samples in the oleate flotation system was investigated.Starch can depress hematite effectively in a wide pH range,but cannot depress siderite efficiently in neu... The flotation of pure and natural carbonaceous iron ore samples in the oleate flotation system was investigated.Starch can depress hematite effectively in a wide pH range,but cannot depress siderite efficiently in neutral conditions.The flotation recovery of pure hematite,siderite,and quartz in the oleate-starch-CaCl2 system is significantly different when the slurry pH varies from 4 to 12.A novel two-step flotation process was developed for the separation of iron concentrate from Donganshan carbonaceous iron ore through which the siderite concentrate is first recovered and the high quality hematite concentrates with relative high iron recovery can be obtained in the second step flotation.The siderite concentrate may be utilized directly or undergo further concentration steps to increase iron grade. 展开更多
关键词 iron ores SIDERITE HEMATITE reverse anionic flotation RECOVERY
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Thermo economic evaluation of oxy fuel combustion cycle in Kazeroon power plant considering enhanced oil recovery revenues 被引量:1
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作者 Ehsan Torabnejad Ramin Haghighi-Khoshkhoo Niloufar Sarabchi 《Journal of Central South University》 SCIE EI CAS 2014年第3期1025-1033,共9页
Oxy fuel combustion and conventional cycle(currently working cycle) in Kazeroon plant are modeled using commercial thermodynamic modeling software. Economic evaluation of the two models regarding the resources of tran... Oxy fuel combustion and conventional cycle(currently working cycle) in Kazeroon plant are modeled using commercial thermodynamic modeling software. Economic evaluation of the two models regarding the resources of transport and injection of carbon dioxide into oil fields at Gachsaran for enhanced oil recovery in the various oil price indices is conducted and indices net present value(NPV) and internal rate of return on investment(IRR) are calculated. The results of the two models reveal that gross efficiency of the oxy fuel cycle is more than reference cycle(62% compared to 49.03%), but the net efficiency is less(41.85% compared to 47.92%) because of the high-energy consumption of the components, particularly air separation unit(ASU) in the oxy fuel cycle. In this model, pure carbon dioxide with pressure of 20×105 Pa and purity of 96.84% was captured. NOX emissions also decrease by 4289.7 tons per year due to separation of nitrogen in ASU. In this model, none of the components of oxy fuel cycle is a major engineering challenge. With increasing oil price, economic justification of oxy fuel combustion model increases. With the price of oil at $ 80 per barrel in mind and $ 31 per ton fines for emissions of carbon dioxide in the atmosphere, IRR is the same for both models. 展开更多
关键词 oxy fuel combustion: C02 capture combined cycle enhanced oil recovery NOx reduction
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茂名乙烯装置脱丁烷塔堵塞原因分析及对策
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作者 刘茂 吴金辉 吴儒毅 《乙烯工业》 CAS 2021年第1期23-28,I0001,共7页
茂名2号乙烯装置脱丁烷塔长时间运行,进料中的不饱和烯烃组分发生聚合结垢堵塞塔盘,降低了脱丁烷塔的分离效果,导致脱丁烷塔塔釜中碳四损失升高。针对脱丁烷塔碳四损失严重的问题,利用闲置的2号裂解汽油加氢装置后脱戊烷塔对其进行了流... 茂名2号乙烯装置脱丁烷塔长时间运行,进料中的不饱和烯烃组分发生聚合结垢堵塞塔盘,降低了脱丁烷塔的分离效果,导致脱丁烷塔塔釜中碳四损失升高。针对脱丁烷塔碳四损失严重的问题,利用闲置的2号裂解汽油加氢装置后脱戊烷塔对其进行了流程改造,将脱丁烷塔与后脱戊烷塔串联操作,脱丁烷塔塔釜的物料采出作为脱戊烷塔进料,进一步分离回收碳四产品,大幅降低了高附加值产品碳四的损失率,增加经济效益。 展开更多
关键词 后脱戊烷塔改造 塔盘堵塞
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先进过程控制系统在催化裂解和气体分离装置的应用
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作者 赵长斌 《石化技术与应用》 CAS 2023年第2期130-134,共5页
为提高装置的自动化水平,稳定产品质量,降低能耗物耗,提高高附加值产品乙烯、丙烯收率,实现装置的效益最大化,对先进过程控制(APC)系统在催化裂解(DCC)装置和气体分离装置上的应用进行了考察。结果表明:APC系统在DCC装置和气体分离装置... 为提高装置的自动化水平,稳定产品质量,降低能耗物耗,提高高附加值产品乙烯、丙烯收率,实现装置的效益最大化,对先进过程控制(APC)系统在催化裂解(DCC)装置和气体分离装置上的应用进行了考察。结果表明:APC系统在DCC装置和气体分离装置的投用率均达到了98%以上,集散控制系统(DCS)操作频次下降幅度达到83%;通过APC系统“卡边”优化,实现DCC装置和气体分离装置单位产品能耗降低幅度分别为1.23%,1.27%;DCC装置低碳烯烃收率提高了0.54个百分点,气体分离装置丙烯产品收率提高了0.19个百分点,可为企业创效362.7万元/a。 展开更多
关键词 先进过程控制 催化裂解 气体分离 多变量控制器 综合能耗 烯烃
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Carbon Sequestration through CO2 Foam-Enhanced Oil Recovery: A Green Chemistry Perspective 被引量:11
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作者 Jennifer A. Clark Erik E. Santiso 《Engineering》 2018年第3期336-342,共7页
Enhanced oil recovery (EOR) via carbon dioxide (CO2) flooding has received a considerable amount of attention as an economically feasible method for carbon sequestration, with many recent studies focus- ing on dev... Enhanced oil recovery (EOR) via carbon dioxide (CO2) flooding has received a considerable amount of attention as an economically feasible method for carbon sequestration, with many recent studies focus- ing on developing enhanced CO2 foaming additives, However, the potential long-term environmental effects of these additives in the event of leakage are poorly understood and, given the amount of additives injected in a typical CO2 EOR operation, could he far-reaching, This paper presents a summary of recent developments in surfactant and surfactant/nanoparticle-hased CO2 foaming systems, with an emphasis on the possible environmental impacts of CO2 foam leakage, Most of the surfactants studied are unlikely to degrade under reservoir conditions, and their release can cause major negative impacts on wildlife, With recent advances in the use of additives (e,g,, nonionic surfactants, nanoparticles, and other chemicals) the use of harsh anionic surfactants may no longer he warranted, This paper discusses recent advances in producing foaming systems, and highlights possible strategies to develop environmentally friendly CO2 EOR methods, 展开更多
关键词 SURFACTANTS NANOPARTICLES Carbon sequestration Enhanced oil recovery
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The Application of CO2-EOR in Ultra-Low Permeability Reservoir
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作者 Bo Chi Min Li Xue Wang Zhaoyong Li Lifang Wu Shuyan Sun Jiankai Wang Yangxin Su Guinan Yang 《Journal of Earth Science and Engineering》 2014年第5期264-270,共7页
CO2 flooding is a process whereby carbon dioxide is injected into an oil reservoir in order to increase output when extracting oil. Since 1952, Wharton obtained the patent concern CO2 flooding, CO2-EOR (CO2 flooding ... CO2 flooding is a process whereby carbon dioxide is injected into an oil reservoir in order to increase output when extracting oil. Since 1952, Wharton obtained the patent concern CO2 flooding, CO2-EOR (CO2 flooding enhance oil recovery) has been one of research hot-spot around the world. According to the statistical data of 2006, there are total of 94 global CO2-EOR projects, including 65 low permeability oilfield projects (79% of the total). Daqing Oilfield is the largest one of China, after more than 50 years of continuous development, oilfield comprehensive water cut has reached over 90%, and the difficulty of oilfield development has been gradually increasing. In recent years, low and ultra-low permeability reservoirs development have played a more and more important role accompany with low permeability reserves in proportion of the total reserves have been increasing year by year. But water-flooding recovery of low permeability reservoir is very low under the influence of reservoir poor properties and heterogeneity. As a kind of greenhouse gas, CO2 flooding can obtain good results for the low permeability reservoir in which the water flooding has proven ineffective. CO2 flooding Pilot Test was conducted under such background since Dec. 2002, over 10 years of practice has proved that CO2 flooding is an effective method to improve the development effect of low permeability reservoir, all experience during the mechanism study and field test should present important references for further larger-scale CO2 flooding projects. 展开更多
关键词 CO2-EOR low-permeability reservoir start-up pressure miscible-pressure MMP (minimum miscible pressure) WAG(water alternating gas injection).
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