钙基干法脱硫剂用于烟气中SO_(2)达标排放  

Calcium-based dry desulfurizer used for SO_(2) in flue gas up-to-standard emission

作　　者：廖小东 王敏灏[5] 李蒲智 江帆 李勇 刘雨露[7] 刘宗社 刘志华 LIAO Xiaodong;WANG Minhao;LI Puzhi;JIANG Fan;LI Yong;LIU Yulu;LIU Zongshe;LIU Zhihua(Research Institute of Natural Gas Technology,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan,China;National Energy R&D Center of High Sulfur Gas Exploitation,Chengdu,Sichuan,China;High Sulfur Gas Exploitation Pilot Test Center,CNPC,Chengdu,Sichuan,China;Key Laboratory of Natural Gas Quality Control and Energy Measurement,State Administration for Market Regulation,Chengdu,Sichuan,China;Research Institute of Gathering and Transportation Engineering Technology,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan,China;Southern Sichuan Gas District,PetroChina Southwest Oil&Gasfield Company,Luzhou,Sichuan,China;College of Resources and Environment,Chengdu University of Information Technology,Chengdu,Sichuan,China;Jian’ge Natural Gas Purification Plant,Northwestern Sichuan Gas District,PetroChina Southwest Oil&Gasfield Company,Guangyuan,Sichuan,China)

机构地区：[1]中国石油西南油气田公司天然气研究院 [2]国家能源高含硫气藏开采研发中心 [3]中国石油天然气集团公司高含硫气藏开采先导试验基地 [4]国家市场监督管理总局重点实验室(天然气质量控制和能量计量) [5]中国石油西南油气田公司集输工程技术研究所 [6]中国石油西南油气田公司蜀南气矿 [7]成都信息工程大学资源环境学院 [8]中国石油西南油气田公司川西北气矿剑阁天然气净化厂

出　　处：《石油与天然气化工》2024年第6期7-13,共7页Chemical engineering of oil & gas

基　　金：四川省科技计划项目(重点研发项目)“工业烟气高效干法稀土脱硫剂研究与应用”(2023YFG0103);中国石油西南油气田公司科技计划项目“天然气净化厂开停工期间烟气达标技术工业试验”(20230307-05)。

摘　　要：目的研究钙基干法脱硫剂在烟气脱硫领域的应用,充分发挥钙基脱硫剂成本低、脱硫性能好及对环境友好的优势,以实现烟气中二氧化硫(SO_(2))的达标排放。方法采用XRD、BET、FTIR、XPS技术对制备的钙基脱硫剂的理化性质进行表征分析。模拟含硫废气,借助固定床反应器考查SO_(2)含量、反应温度、O_(2)含量、体积空速对钙基干法脱硫剂脱硫性能的影响。结果制备的钙基脱硫剂脱硫效果较好,其最佳操作温度范围为220~300℃,适用于烟气中SO_(2)体积分数不超过0.4%的情况。O_(2)含量的增加产生了新的用于吸附的活性位点,对脱硫过程起到促进作用。当体积空速在500~2000 h^(-1)范围内时,硫容变化不大。结论钙基干法脱硫剂应用于烟气脱硫领域具有高效性和稳定性,可为其在工业领域的广泛应用提供参考。Objective The aim is to study the application of calcium-based dry desulfurizer in the field of flue gas desulfurization,and give full play to the advantages of low cost,good desulfurization performance and environmental friendliness of calcium-based desulfurizer,so as to achieve the up-to-standard emission of SO_(2) in flue gas.Methods The physical and chemical properties of the prepared calcium-based desulfurizer were characterized by XRD,BET,FTIR and XPS.Additionally,simulating sulfur-containing waste gas,the effects of SO_(2) content,reaction temperature,O_(2) content and volume space velocity on the desulfurization performance of calciumbased dry desulfurizer were investigated by a fixed bed reactor.Results The prepared calcium-based desulfurizer demonstrated effective desulfurization,and its optimum operating temperature range was 220-300℃,which was suitable for the case that the volume fraction of SO_(2) in flue gas did not exceed 0.4%.The increase of O_(2) content produced new active sites for adsorption,which could promote desulfurization process.When the volume space velocity was in the range of 500-2000 h^(−1),the sulfur capacity did not change much.Conclusions The application of calcium-based dry desulfurizer in the field of flue gas desulfurization has high efficiency and stability,which can provide reference for its wide application in the industrial field.

关 键 词：二氧化硫 钙基脱硫剂 烟气脱硫 达标排放 干法脱硫 

分 类 号：X701.3[环境科学与工程—环境工程]