硫磺制酸系统的设计与生产

Design and production of sulphur-burning sulphuric acid system

介绍盐城庆松硫能有限公司12万t/a硫酸和15万t/a饱和蒸汽硫磺制酸系统的工艺流程、设备结构及生产运行情况等。该系统在设计中积极采用新材料、新技术,成功地应用了不锈钢和碳钢相结合转化器、阳极保护不锈钢酸冷却器及管道、热管省煤器、新型大孔板波形管碟环式换热器、DCS控制系统等。2年多的生产运行情况表明,装置运行可靠,技术指标先进,生产控制指标达到或好于设计值,总转化率达99.87%,吸收率达99.99%。

The process, equipment design and operation of a 120 kt/a sulphuric acid and 150 kt/a saturated vapor sulphur-burning sulphuric acid system in Yancheng Qingsong Sulphuric Acid-Energy Co., Ltd., are described in detail. The system adopt new materials and new technology, including such equipment as the following： a stainless and carbon steelfabricated converter and dice and doughnut-type gas heat exchanger with big-orifice baffles and wavy pipes, anodically protected stainless steel acid coolers and pipes, a heat-pipe economizer, and a DCS control system, etc. More than two years of operation showed that the system had a reasonable design with process control indices up to or superior to design targets, with the total conversion of 99.87 %, and the absorption rate of 99.99 %.