固定床改浆态床蒽醌加氢制高浓度双氧水技术经济分析

Technical and economic analysis of high-concentration hydrogen peroxide production from fixed bed to slurry bed anthraquinone hydrogenation

以12.4 kt/a蒽醌法固定床双氧水装置改造为20 kt/a浆态床双氧水工业示范装置为例,探讨了蒽醌法浆态床生产高浓度双氧水新工艺的可行性和效益性。结果表明:与蒽醌法固定床双氧水生产工艺相比,浆态床双氧水生产工艺采用新型高产能工作液、高效蒽醌加氢微球催化剂、浆态床环流反应器、逆流氧化反应器、新型转盘萃取塔、高温真空脱水系统,氢化效率达到11~13 g/L,双氧水质量分数达到40%以上,且整个工艺为全酸性环境,安全性较高;装置采用浆态床双氧水生产工艺改造后,生产运行平稳,氢化效率稳定在11 g/L以上,双氧水质量分数达到41.0%,物耗明显降低,单位产品能耗由388.56 kg标油/t降至258.96 kg标油/t,三废排放量大幅度降低,年利润总额达到1025万元,实现了技术优势向经济效益的有效转化。

Taking the transformation of a 12.4 kt/a fixed bed device into a 20 kt/a slurry bed reactor for an industrial demonstration plant of anthraquinone hydrogenation into hydrogen peroxide as an example,the feasibility and efficiency of a new process for producing high-concentration hydrogen peroxide by slurry bed anthraquinone method were explored.The results showed that compared with the fixed bed anthraquinone hydrogenation into hydrogen peroxide production process,the slurry bed hydrogen peroxide production process offered the hydrogenation efficiency of 11-13 g/L and the hydrogen peroxide mass fraction over 40%and provided the entire process of high safety due to a fully acidic environment when it adopted a new type of high-capacity working fluid,efficient microspherical catalyst for anthraquinone hydrogenation,slurry bed loop reactor,countercurrent oxidation reactor,new rotary extraction tower and high-temperature vacuum dehydration system;and after the transformation into the slurry bed hydrogen peroxide production process,the device operated smoothly with a hydrogenation efficiency over 11 g/L and a hydrogen peroxide mass fraction of 41.0%,the material consumption and the discharge of three wastes were significantly reduced,the energy consumption per unit product was reduced from 388.56 kg standard oil/t to 258.96 kg standard oil/t and the total annual profit reached 10.25 million RMB yuan,achieving an effective transformation of technical advantages to economic benefits.