大庆油田天然气干法脱硫剂的比选与应用  

Selection,Improvement and Use of Activated Charcoal Desulfurizer for Natural Gas in Daqing Oil Field

作　　者：吴家文[1] 崔红霞[2] 姚为英[3] 王京博[3] 宋考平[1] 王朋珍[1] 

机构地区：[1]大庆石油学院石油工程学院,黑龙江大庆163318 [2]中国石油大庆油田公司大庆油田设计院,黑龙江大庆163712 [3]中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010

出　　处：《油田化学》2007年第4期328-332,共5页Oilfield Chemistry

基　　金：国家自然科学基金重点资助项目"低渗透油层提高驱油效率的机理研究"(项目编号50634020);黑龙江省杰出青年科学基金项目"油层多孔介质内纳观渗流界面作用力研究"资助

摘　　要：对天然气干法脱硫技术（分子筛法，氧化铁法及活性炭法）及所用脱硫剂作了综合分析。在相应的室内脱硫装置上，在单一空速、温度等条件下，测定了5种氧化铁脱硫剂和5种活性炭脱硫剂用于含3mg／LH2S的N2气脱硫时的硫容。在扩大的空速（500-20001／h）、温度（20～120℃）、H2S浓度（2-11mg／L，氧化铁）或粒度（0．2～1．0mm，活性炭）条件下，对初选氧化铁脱硫剂EF-2和活性炭脱硫剂3018作了进一步考察，通过脱硫效果和工艺条件对比，选择3108为大庆油田天然气脱硫剂。在3108基础上，改用Na2CCh为浸渍用碱，浸渍量6％，改用商品TLC为催化剂，制得了一种高效煤制活性炭脱硫剂。将这种脱硫剂用于大庆油田喇二注气站天然气脱硫，日处理天然气72×10^4m^3，空气需求量24m^3／h，原料气含H2S0．0445～0．213mg／L，净化气含H2S0～0．0017mg／L，满足有关国家标准的要求（≤0．02mg/L）。图1表6参9。The dry methods of desulfurizing natural gas （NG） and the desulfurizers（DSs） used of molecular sieve, ferric oxide （FO） and activated carbon（AC） type are summarized. 5 FO DSs and 5 AC DSs are tested for their sulfur capacities on laboratory desulfurizing apparatus with gaseous N2 containing 3 mg HaS per liter under conditions of single space speed and temperature. The chosen FO desulfurizer, EF-2, and AC desulfurizer, 3108, are further tested under conditions of widened space speed, 500-2000 h^-1, temperature, 20-120℃, and H2S content, 2- 11 mg/L, for EF-2 or particle size, 0.2-1.0 mm, for 3108 and, as a result of comparison of desulfurizing efficiency and technologic parameters, 3108 is chosen as basic desulfurizer for Daqing. A high efficiency activated charcoal desulfurizer is prepared on the basis of 3108 with following modification in its processing; to impregnate activated charcoal with Na2CO3 solution to a percentage impregnation of 6% ; to use commercial catalyst TLC instead. This desulfurizer is now used in NG injection station La-2 in Daqing, where 7.2×10^5 m^3 NG containing 0.0445-0.213mg/L H2S per liter is treated daily with an air demand of 24 m^3/h and the treated NG contains 0-0.0017 mg H2S per liter, fully meeting the norm of State Standard, ≤0.02 mg/L.

关 键 词：天然气 脱硫处理 脱硫剂 活性炭 筛选 制备 硫容 大庆油田 

分 类 号：TE644[石油与天然气工程—油气加工工程] TE868