天然气脱硫工艺效果与影响因素
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摘要
通过分析某联合站脱硫塔出口天然气硫化氢含量与脱硫剂的更换情况,评价了脱硫工艺的效果,探讨了影响脱硫效果的因素,并进行了工艺改进。分析结果表明,脱硫工艺效果较差,表现为脱硫剂颗粒内芯未能参与反应,原因之一为进塔天然气携液堵塞脱硫剂微孔。由于脱硫工艺塔前油气分离器距脱硫塔较远,导致天然气中部分气体因温降而变为液态进入脱硫塔。其次,按照现行标准获得的脱硫剂硫容不能满足实际需要。建议出台新的脱硫剂工作硫容评价标准,以指导脱硫剂的制备以及对脱硫剂进行更科学的筛选。
By analyzing the H_2S content in natural gas from the outlet of a desulphurization tower,and the replacement of the desulfurizer,the desulphurization process was evaluated,and the factors which affect desulphurization were discussed. Besides,the corresponding proposals were carried out.The results showed that the desulphurization process behaved inefficiently,since the inner core of the desulfurizer stick was not reacted. One of the reasons was that the natural gas carried liquid into the tower plugging the micropores of the desulfurizer. Since the oil-gas separator was farther away from the desulfurization tower,part of the natural gas became liquid due to the temperature drop.Secondly,the desulfurizer screened according to the current standards had poor consistency with the on-site gas source. It was recommended to introduce a new evaluation standard for the sulfur capacity of the desulfurizer to guide the preparation study of the desulfurizer and to screen the desulfurizer more scienti?cally.
By analyzing the H_2S content in natural gas from the outlet of a desulphurization tower,and the replacement of the desulfurizer,the desulphurization process was evaluated,and the factors which affect desulphurization were discussed. Besides,the corresponding proposals were carried out.The results showed that the desulphurization process behaved inefficiently,since the inner core of the desulfurizer stick was not reacted. One of the reasons was that the natural gas carried liquid into the tower plugging the micropores of the desulfurizer. Since the oil-gas separator was farther away from the desulfurization tower,part of the natural gas became liquid due to the temperature drop.Secondly,the desulfurizer screened according to the current standards had poor consistency with the on-site gas source. It was recommended to introduce a new evaluation standard for the sulfur capacity of the desulfurizer to guide the preparation study of the desulfurizer and to screen the desulfurizer more scienti?cally.
引文
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[11]中华人民共和国工业和信息化部.HG/T4354-2012中温氧化铁脱硫剂硫容试验方法[S].北京:化学工业出版社,2012.
[12]肖安陆,孔渝华,胡典明,等.氧化铁脱硫剂硫容的不同测定方法及其结果比较[J].化学与生物工程,2001,18(2):22-25.
[13]王鲁璐,李海英,王立贤,等.球型脱硫剂脱除水中硫化氢的应用[J].气体净化,2016,16(2):10-12.
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[15]Poulton S W,Krom M D,Rijn J V,et al.The use of hydrous iron(Ⅲ)oxides for the removal of hydrogen sulphide in aqueous systems[J].Water Res,2002,36(4):825-834.
[16]印永嘉.物理化学简明手册[M].北京:高等教育出版社,1988:134
[2]黄飞.羟基氧化铁脱除低浓度H2S的研究[D].北京:中国科学院研究生院,2010.
[3]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.GB/T 11060.11-2014天然气含硫化合物的测定第11部分:用着色长度检测管法测定硫化氢含量[S].北京:中国标准出版社,2014.
[4]郭文川.无定型羟基氧化铁脱硫技术的研究与应用[J].河北能源职业技术学院学报,2014,14(2):62-64.
[5]国家能源局.SY/T0515-2014油气分离器规范[S].北京:石油工业出版社,2015.
[6]国家经济贸易委员会.SY/T0076-2008天然气脱水设计规范[S].北京:石油工业出版社,2008.
[7]国家能源局.SY/T5329-2012碎屑岩油藏注水水质推荐指标及分析方法[S].北京:国家标准出版社,2012.
[8]任爱玲.氧化铁系脱硫剂对硫化氢脱除的研究[D].天津:天津大学,1999.
[9]孙小娟,陈晓明.氧化铁脱硫剂脱除煤气中硫化氢的技术探讨[J].广州化工,2010,38(11):187-188.
[10]中华人民共和国工业和信息化部.HG/T4679-2014中温氧化铁脱硫剂硫容试验方法[S].北京:化学工业出版社,2014.
[11]中华人民共和国工业和信息化部.HG/T4354-2012中温氧化铁脱硫剂硫容试验方法[S].北京:化学工业出版社,2012.
[12]肖安陆,孔渝华,胡典明,等.氧化铁脱硫剂硫容的不同测定方法及其结果比较[J].化学与生物工程,2001,18(2):22-25.
[13]王鲁璐,李海英,王立贤,等.球型脱硫剂脱除水中硫化氢的应用[J].气体净化,2016,16(2):10-12.
[14]Poulton S W.Sulfide oxidation and iron dissolution kinetics during the reaction of dissolved sulfide with ferrihydrite[J].Chem Geol,2003,202(1):79-94.
[15]Poulton S W,Krom M D,Rijn J V,et al.The use of hydrous iron(Ⅲ)oxides for the removal of hydrogen sulphide in aqueous systems[J].Water Res,2002,36(4):825-834.
[16]印永嘉.物理化学简明手册[M].北京:高等教育出版社,1988:134