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Pretreating process for ammonia

A pretreatment, gas technology, applied in ammonia preparation/separation, lighting and heating equipment, fertilizer mixtures, etc., can solve the problems of low safety and reliability, high energy consumption, high cost, eliminate hidden safety hazards and reduce the environment Effects of pollution, reduced production costs and energy consumption

Inactive Publication Date: 2003-11-19
HUBEI YIHUA CHEMICAL INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pretreatment, that is, the gas supply section requires coolers, storage tanks, evaporators and other equipment, and must also go through processes such as pressurization, cooling, storage, and evaporation, which have the disadvantages of high energy consumption, high cost, and low safety and reliability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] The ammonia gas produced by the synthetic ammonia system delivered by the ammonia gas main pipe is pressurized to 5kgf / cm through the ammonia compressor 2 , directly transported to the phosphate compound fertilizer production section through the pipeline.

Embodiment 2

[0010] When the production of phosphate compound fertilizer is stopped, the ammonia gas transported by the ammonia gas main pipe can also be pressurized to 16kgf / cm through the ammonia compressor 2 , is cooled into liquid ammonia through the cooling tower and transported back to the ammonia synthesis section through the pipeline.

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PUM

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Abstract

A pre-treating process for ammonia gas used to prepare chemical fertilizer features that after the ammonia gas is pressurized to 1-25 kg / sq.cm, it is directly delivered to chemical fertilizer plant, or returned back to synthetic ammonia workpiece after cooled. Its advantages are no intermediate link and equipment, and low cost.

Description

technical field [0001] The invention relates to an ammonia gas supply method in a fertilizer production process, in particular to an ammonia gas pretreatment process. Background technique [0002] Ammonia gas is used as the main raw material for fertilizer production. The existing gas supply process uses the ammonia gas transported by the ammonia gas main pipe to be pressurized to a certain pressure by an ammonia compressor, then cooled by a water cooler into liquid ammonia, and then stored in an ammonia storage tank. Ammonia is evaporated into gaseous ammonia by the ammonia evaporator and sent to the production section. The pretreatment, that is, the gas supply section requires coolers, storage tanks, evaporators and other equipment, and must also go through processes such as pressurization, cooling, storage, and evaporation, which have the disadvantages of high energy consumption, high cost, and low safety and reliability. ...

Claims

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Application Information

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IPC IPC(8): C01C1/02C05G1/00F25J1/00
Inventor 蒋远华王华雄杨晓勤刘晓王世杰
Owner HUBEI YIHUA CHEMICAL INDUSTRY CO LTD
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