低热值天然气合成氨工艺中的节能技术

Energy-saving Technology in Low Calorific Value Natural Gas Ammonia Synthesis Process

中海石油化学股份有限公司二期(简称富岛二期)1 500t/d合成氨装置,设计原料气中甲烷含量为60.7%左右,为典型的低热值天然气,采用KBR组合合成氨工艺技术。KBR工艺能够处理原料气为含高浓度N2和CO2的低热值天然气的合成氨工艺,其深冷技术具有诸多方面的优势,突出表现在原料气弹性大、运行稳定、操作便捷、效率高以及节能性好等方面。将KBR工艺与其他两项工艺进行一定程度的对比分析,并对KBR工艺的节能措施进行研究分析。

Zhonghai Petrochemical Co.,Ltd.Phase Ⅱ(referred to as Fudao Phase Ⅱ)1500t/d ammonia plant,designed with a methane content of about 60.7%in the feed gas,which is a typical low calorific value natural gas,using KBR combined ammonia synthesis technology.The KBR process is the only synthetic ammonia process capable of treating low-calorie natural gas containing high concentrations of N2 and CO2.Its cryogenic technology has many advantages,such as high gas elasticity,stable operation,convenient operation and high efficiency.Good energy saving and so on.In this paper,the KBR process is compared with the other two processes to some extent,and the energy saving measures of the KBR process are studied and analyzed.