引用本文:罗建军,马强,林日亿. 硫酸盐热化学还原生成H2S实验研究[J]. 石油与天然气化工, 2018, 47(6): 7-11.
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硫酸盐热化学还原生成H2S实验研究
罗建军1,马强2,林日亿2
1.重庆盎瑞悦科技有限公司;2.中国石油大学(华东)储运与建筑工程学院
摘要:
H2S作为有毒的酸性气体,在稠油注汽热采过程中主要由硫酸盐热化学还原(TSR)产生。通过实验探究CaSO4、Na2SO4、MgSO4和Al2(SO4)3 4种不同硫酸盐发生TSR反应生成H2S的作用机制及影响。实验结果表明:①水是产生TSR反应的必要条件,固态硫酸盐并不能引发TSR反应;②硫酸盐的溶解度决定TSR反应速率,溶解度越高,反应速率越快;③水溶性硫酸盐的金属阳离子电荷数决定TSR反应的难易程度,电荷数越多,反应越容易进行。
关键词:  硫酸盐  TSR  H2S  热化学
DOI:10.3969/j.issn.1007-3426.2018.06.002
分类号:
基金项目:国家自然科学基金“稠油水热裂解生成硫化氢反应机制研究”(51874333);国家“十三五”重大科技专项“改善SAGD开发效果技术研究与应用”(2016ZX05012-002);山东省自然基金“基于稠油水热裂解反应的硫化氢生成机制研究”(ZR2017MEE030)
Experimental determination on H2S generation by thermochemical reduction reaction of sulfates
Luo Jianjun1, Ma Qiang2, Lin Riyi2
1. Chongqing Angruiyue Science and Technology Co., Ltd., Chongqing, China;2. China University of Petroleum, Qingdao, Shandong, China
Abstract:
As a harmful acidic gas, H2S is mainly produced by thermochemical sulfate reduction (TSR) reaction during the process of heavy oil thermal recovery with steam injection. The formation mechanism and effect of producing H2S from four sulfate including CaSO4, Na2SO4, MgSO4 and Al2(SO4)3 via TSR reaction were studied by experiments. The results showed that:(1) water was necessary for the TSR reactions and solid sulfate could not induce the TSR reactions. (2) The reaction rate of TSR was determined by the solubility of sulfate. The higher the solubility of sulfate was, the faster the reaction rate was. (3) The charge number of metal cation of water soluble sulfate determined the difficult degree of TSR reaction. The more the charge number was, the easier the reaction was.
Key words:  sulfate  TSR  H2S  thermochemical