乙烯裂解炉用BaCe_(0.8)Y_(0.2)O_3涂层的抗结焦性能
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摘要
采用浆料法,在金属样片上制备Al_2O_3涂层和BaCe_(0.8)Y_(0.2)O_3涂层,并在乙烷水蒸气裂解中考察涂层的抗结焦性能。通过TG,SEM,EDS分析,发现Ba Ce_(0.8)Y_(0.2)O_3涂层结焦很少。在裂解炉炉管内表面制备Ba Ce_(0.8)Y_(0.2)O_3涂层,考察它在石脑油水蒸气裂解中的裂解性能。与空白炉管相比,Ba Ce_(0.8)Y_(0.2)O_3涂层使结焦量减少96.1%,产气量急剧增大,裂解焦油减少,H_2,CO,CO_2的收率显著增大,乙烯、丙烯、丁二烯收率略微降低。
Al_2O_3 and BaCe_(0.8)Y_(0.2)O_3 coatings were prepared on metal samples by slurry method,and their anti-coking performance was investigated in ethane steam cracking.TG,SEM and EDS analysis showed that the coking of BaCe_(0.8)Y_(0.2)O_3 coating was rare.BaCe_(0.8)Y_(0.2)O_3 coating was prepared on the inner surface of cracking furnace tube,and its cracking performance in naphtha steam cracking was investigated.Compared with blank tube,BaCe_(0.8)Y_(0.2)O_3 coating reduced coking by 96.1%,gas production increased sharply,pyrolysis tar decreased,H_2,CO and CO_2 yields increased significantly,and ethylene,propylene and butadiene yields decreased slightly.
Al_2O_3 and BaCe_(0.8)Y_(0.2)O_3 coatings were prepared on metal samples by slurry method,and their anti-coking performance was investigated in ethane steam cracking.TG,SEM and EDS analysis showed that the coking of BaCe_(0.8)Y_(0.2)O_3 coating was rare.BaCe_(0.8)Y_(0.2)O_3 coating was prepared on the inner surface of cracking furnace tube,and its cracking performance in naphtha steam cracking was investigated.Compared with blank tube,BaCe_(0.8)Y_(0.2)O_3 coating reduced coking by 96.1%,gas production increased sharply,pyrolysis tar decreased,H_2,CO and CO_2 yields increased significantly,and ethylene,propylene and butadiene yields decreased slightly.
引文
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[24]郏景省,王申祥,王红霞,等.硅铬复合氧化物抗结焦涂层的制备及其性能[J].石油化工,2014,43(4):364-367.
[25]郏景省,王红霞,王申祥,等.乙烯裂解炉管抗结焦氧化物的研究[J].石油化工,2016,45(3):269-274.
[2]Surface Engineered Products Corporation.Coating system for high temperature stainless steel:US6585864[P].2003-07-01.
[3]Surface Engineered Products Corporation.Protective coating system for high temperature stainless steel:US6475647[P].2002-11-05.
[4]Alon Inc.Diffusion coated ethylene furnace tubes:US5873951[P].1999-02-23.
[5]Alon Inc.Surface alloy system conversion for high temperature applications:US6537388[P].2003-03-25.
[6]樊黑钦,崔德春,李锐.裂解炉管涂层材料的制备及其作用机理的研究[J].乙烯工业,2003,15(l):26-29.
[7]Novacor Chemicals Ltd.Treatment of furnace tubes:US5630887[P].1997-05-20.
[8]Novacor Chemicals Ltd.Process of treating a stainless steel matrix:US6436202[P].2002-08-20.
[9]Novacor Chemicals Ltd.Surface on a stainless steel matrix:US6824883[P].2004-11-30.
[10]Novacor Chemicals Ltd.Surface on a stainless steel matrix:US6899966[P].2005-05-31.
[11]郏景省,王申祥,王红霞,等.Si/Ce化学气相共沉积制备抗结焦涂层的研究[J].乙烯工业,2010,22(3):1-4.
[12]British Petroleum Company Limited.Method of applying a layer of silica on a substrate:US4099990[P].1978-07-11.
[13]Mannesmann Aktiengesellschaft.Apparatus and process for reducing coking of heat exchange surfaces:US5922192[P].1999-07-13.
[14]阿托菲纳公司,特克尼普有限公司.减少裂解反应器中的结焦:1399670[P].2003-02-26.
[15]SK Corporation.Method of on-line coating film on the inner walls of the reaction tubes in a hydrocarbon pyrolysis reactor:US6514563[P].2003-02-04.
[16]SK株式会社.在烃裂解反应器的反应管内壁形成涂层的方法:1345261[P].2002-04-17.
[17]童遂放,罗小秋,黄志荣,等.常压化学气相沉积法制备SiO2涂层及其抗结焦性能[J].石油化工,2007,36(10):1012-1015.
[18]罗小秋,黄志荣,孙启凤,等.HP40钢表面沉积SiO2功能涂层工艺[J].机械工程材料,2008,32(4):40-53.
[19]王红霞,王申祥,王国清,等.乙烯裂解炉管抑制结焦在线涂层的制备研究[J].石油化工,2010,39(12):1313-1318.
[20]宋立臣,郏景省.二氧化硅抗结焦涂层的制备及性能研究[J].石油化工,2014,43(3):255-258.
[21]Brown D E,Clark J T K,FosterA I,et al.Inhibition of Coke Formation in Ethylene Steam Cracking[M]//Coke Formation on Metal Surfaces.Washington:ACS,1982:23-43.
[22]郏景省,王申祥,王红霞,等.硅基复合氧化物抗结焦涂层的组分选择[J].石油化工,2015,44(1):24-28.
[23]周建新,徐宏,马秋林,等.Si/S涂层抑制结焦性能的中试对比研究[J].石油学报:石油加工,2009,25(5):678-684.
[24]郏景省,王申祥,王红霞,等.硅铬复合氧化物抗结焦涂层的制备及其性能[J].石油化工,2014,43(4):364-367.
[25]郏景省,王红霞,王申祥,等.乙烯裂解炉管抗结焦氧化物的研究[J].石油化工,2016,45(3):269-274.