论合成氨尿素装置减排CO_2节能创新工艺发展前景  

Discussing Developmental Prospect for CO2 Emission Reduction and Energy Conversation Innovation Process in Ammonia Synthesis and Urea Plant

作　　者：李琼玖 杜世权 廖宗富 周述志 申同贺 刘尚武 甄耀东 黄吉荣 王建华 李德宽 漆长席 赵月兴 李润庠 王树中 

机构地区：[1]基玖能源化工工程开发设计科技公司,四川成都610012

出　　处：《化肥设计》2009年第6期1-9,共9页Chemical Fertilizer Design

摘　　要：随着国家资源税和排碳税的开征,节能减排成为合成氨尿素生产企业生存发展的重要出路。介绍了轻烃多气流纯氧自热转化的节气、增产、减排CO2创新工艺的工艺原理、技术特征以及天然气合成氨装置的扩改方案;阐述了天然气三一段换热转化制合成氨的工艺流程设计以及蒸汽转化炉、换热转化炉、二段自热转化炉等主要设备的专有技术特点;以300 t/d合成氨装置为例,论述了天然气一段转化等压一次变换联尿装置的设计规模、单元组成、工艺流程和生产开车原则。结果表明,该创新工艺比传统法工艺增产20%~100%,节气20%~30%,减排CO220%~80%,老厂改造或新建装置皆可采用。Along with starting to levy resource tax and carbon emission tax in China, Energy conversation and emission reduction will become the important channelization for existing and developing of ammonia and urea enterprises. Author has introduced the innovation process principle for gas conser- vation, production increase and CO2 emission reduction of multi-gas flow pure-oxygen self-heating reformation of light hydrocarbon, the technical feature and also the production extension and revamp scheme of ammonia synthesis plant using natural gas, has described the process flow design of synthesis am- monia produced by heat exchanging and reforming of natural gas in first stage and third stage and the proprietary technology features of the main equipment of steam reformer, heat exchanging reformer, second stage self-heating reformer etc. ; taking the 300 t/d ammonia synthesis plant as a example, has dis- cussed design scale, unit composition, process flow and production start-up principle for combination urea plant in first reformation of natural gas and iso- baric primary shift. The result indicates that in the compassion of this innovative process with the traditional process, production is increased by 20% - 100%, gas in saved by 20%-30%, CO2 emission is reduced by 20%-80% for the new process, it can be applied to both old plant and newly built plant.

关 键 词：合成氨 尿素 自热转化 节能减排 

分 类 号：TQ441.41[化学工程—化学肥料工业]