A new process for purification of synthetic ammonia feed gas

Nanjing Guochang Chemical Technology Co., Ltd. successfully developed a new process for self-heating non-isothermal alcohol alkylation synthesis ammonia feed gas purification, and was applied in the Shandong Feicheng Fertilizer Plant. The total alcohol ammonia scale reached 200,000 tons, and all operational indicators reached Domestic advanced level. The process reduces the cost of tons of ammonia by 90 yuan compared with the original copper washing process, and can produce more methanol than other purification processes, creating a new way for China's nitrogen fertilizer industry to save energy and reduce consumption, protect the environment, and achieve diversified operations.

Self-heating non-isothermal alcohol alkylation synthesis ammonia feed gas purification new process is to set a set of medium pressure alcoholization unit under the pressure of synthetic ammonia feed gas compression to 8.0 ~ 16.0MPa, and then set a set of high pressure alcoholization and pressure at 20 ~ 31.4MPa pressure level A set of high pressure alkylation units. The medium-pressure alcoholization device mainly produces alcohol, and can realize an alcohol-to-ammonia ratio of 1:1 to 1:10; the high-pressure alcoholization and high-pressure alkylation device mainly purify.

One of the features of the device is that the system is fully self-heating, that is, the medium pressure alcoholization, high pressure alcoholization and high pressure alkylation system do not need external power supply or external heat supply, and each reactor is fully self-heating operation, safe and stable. Another feature of the process is that the alcoholization is carried out more completely, the raw material consumption is low, and the environmental pollution is small, which brings considerable economic benefits to the enterprise and is worth promoting.
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