| 摘要: |
| 目的 研究Fe、Ce金属助剂添加量及工艺条件对复合金属氧化物脱硫反应活性的影响，以有效提高固体脱硫剂的硫容及再生反应性能。方法 基于氧化吸附和还原再生反应机理，利用控制变量法考查了活性金属助剂添加量、体积空速、反应温度、原料气组成和还原气类型等工艺条件对反应性能的影响。结果 在反应温度为500 ℃、体积空速为3 000 h?1的条件下，当Fe2O3和Ce2O3的添加量（w）分别为2a%和3b%时，固体脱硫剂硫容（w）可高达24.0%，还原反应时间为65 min。另外，降低体积空速、升高反应温度、降低SO2含量或提高O2含量可进一步提高固体脱硫剂的硫容。还原气的类型对再生反应过程也有很大的影响。结论 明确了金属助剂及工艺反应条件对脱硫反应活性的影响，可为高温可再生固体脱硫剂的研发及工业应用提供理论指导。 |
| 关键词: 金属助剂 烟气脱硫 复合金属氧化物 可再生固体脱硫剂 |
| DOI：10.3969/j.issn.1007-3426.2024.05.019 |
| 分类号: |
| 基金项目: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博士后项目“复合金属氧化物对SO2吸附再生特性及反应动力学研究”（B20220306-10） |
|
| Study on the reaction performance of compound metal-oxide solid desulfurizer for flue gas desulfurization |
|
Xiaoling ZHAO1,2,3, Zongshe LIU1,2,3, Chaoqun LI4, Rui FAN5, Shenhuai WU5, Heng LEI6, Zhihua LIU1,2,3, Jiawen LAN7
|
|
1.Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China;2.National R & D Center of High Sulfur Gas Exploitation, Chengdu, Sichuan, China;3.Key Laboratory of Natural Gas Quality Control and Energy Measurement, State Administration for Market Regulation, Chengdu, Sichuan, China;4.China Petroleum Engineering & Construction Corporation Southwest Company, Chengdu, Sichuan, China;5.PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China;6.Wanzhou Branch of Natural Gas Purification Plant General, PetroChina Southwest Oil & Gasfield Company, Chongqing, China;7.Southwest Oil & Gas Field CDB Operating Company, Dazhou, Sichuan, China
|
| Abstract: |
| Objective In order to effectively improve the sulfur capacity and reduction reaction performance, the influence of Fe and Ce metal additives dosage and process condition on the reactivity for compound metal-oxide solid desulfurizer was studied. Methods Based on the mechanism of the oxidation adsorption and reduction regeneration reaction, the effects of the metal additives dosage, volume space velocity, reaction temperature, feed gas composition, and reducing gas type on the reaction performance were studied utilizing control variate method. Results Under the conditions of reaction temperature of 500 ℃ and volume space velocity of 3 000 h?1, the sulfur capacity could reach up to 24.0 wt%, and the reduction reaction time was 65 min when the dosage of Fe2O3 and Ce2O3 were 2a wt% and 3b wt%, respectively. In addition, the sulfur capacity of the solid desulfurizer could be further increased by modifying process conditions, such as reducing the volume space velocity, increasing the reaction temperature, reducing the SO2 content, or increasing the O2 content. The type of reducing gas also had a significant impact on the regeneration reaction process. Conclusion The influence of metal additives and process conditions on the reactivity of desulfurization reaction is clarified, which can provide theoretical guidance for developing and industrial applications of high-temperature regenerative solid desulfurizer. |
| Key words: metal additive flue gas desulfurization compound metal oxide regenerative solid desulfurizer |
