甲醇甲烷联产工艺技术研究  

Study on the technology of methanol methane co-production

作　　者：张杰 ZHANG Jie(SINOPEC Nanjing Research Institute of Chemical Industry Co.,Ltd.,Nanjing 210048,Jiangsu,China)

机构地区：[1]中石化南京化工研究院有限公司,江苏南京210048

出　　处：《能源化工》2024年第3期47-51,共5页Energy Chemical Industry

摘　　要：采用沉淀法制备了甲醇合成催化剂、甲烷合成催化剂,并将其应用于甲醇甲烷联产工艺流程中。针对甲醇甲烷联产工艺,考察了反应温度、反应压力、空速、进料组成、补碳等因素对甲醇、甲烷合成反应以及串联工艺的影响,反应温度、反应压力、空速、进料组成、补碳对甲醇、甲烷合成反应均有不同程度的影响;在空速为8 000 h^(-1),反应压力为5.0 MPa,甲醇合成反应温度为230℃,甲烷合成反应温度为320℃,原料气采用焦炉气补碳后组成(φ)为CO 7.9%、CO_(2) 10.2%、H2 58.2%、CH_(4) 23.7%的条件下进行了累计500 h的稳定性试验。结果表明,CO总转化率高于99.8%,CO_(2)总转化率高于90.0%,产品中粗甲醇含量(w)大于90.0%,CH4含量(φ)大于91.0%,甲醇合成反应段CO转化率高于60.0%,甲烷合成反应段CO转化率高于99.5%。Methanol synthesis catalyst and methane synthesis catalyst are prepared by precipitation method and applied in the methanol methane co-production process.Regarding the methanol methane co-production process,the effects of reaction temperature,reaction pressure,space velocity,feed composition,carbon supplementation,and other factors on the methanol and methane synthesis reactions and the series process are investigated.Reaction temperature,reaction pressure,space velocity,feed composition,and carbon supplementation all have varying degrees of impact on the methanol and methane synthesis reactions.The stability test is conducted for a total of 500 hours under the conditions of space velocity of 8 000 h~(-1),reaction pressure of 5.0 MPa,methanol synthesis reaction temperature of 230 ℃,methane synthesis reaction temperature of 320 ℃,and feed gas composed(φ) of CO 7.9%,CO_(2) 10.2%,H_(2) 58.2%,and CH_(4) 23.7% after carbon supplementation using coke oven gas.The results show that the total conversion rate of CO is higher than 99.8%,the total conversion rate of CO_(2) is higher than 90.0%,the crude methanol content(w) in the product is greater than 90.0%,the CH_(4) content(φ) is greater than 91.0%,the CO conversion rate in the methanol synthesis reaction section is higher than 60.0%,and the CO conversion rate in the methane synthesis reaction section is higher than 99.5%.

关 键 词：甲醇 甲烷 联产 焦炉气 补碳 

分 类 号：TQ546.4[化学工程—煤化学工程]