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Ammonia synthesis process

A synthetic ammonia and process technology, applied in the field of synthetic ammonia process, can solve the problems of environmental pollution, large coal consumption and high cost, and achieve the effects of significant economic benefits, environmental protection and energy saving, and low cost.

Active Publication Date: 2010-10-06
YULIN HONGYUAN ENVIRONMENT FRIENDLY CHEM
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Problems solved by technology

The existing synthetic ammonia process uses anthracite as raw material to generate synthetic ammonia. The common process of this technology is: gas production→semi-water gas desulfurization→compressor 1, 2 sections→transformation→transformation gas desulfurization→compressor 3 stage→desulfurization→compressor 4, 5th section → copper washing → 6th section of compressor → ammonia synthesis → product NH 3 , this technology consumes a lot of coal, not only the cost is high, but also a large amount of H 2 S, NH 3 , CO 2 emissions, causing pollution and damage to the environment

Method used

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Embodiment Construction

[0021] Such as figure 1 As shown, when preparing ammonia, put the coke oven gas 1 (raw coal gas) in the gas cabinet 2, and convert the coke oven gas through the pressure swing adsorption method removal of naphthalene and tannin extract method desulfurization process device 3 in the gas cabinet 2. Naphthalene removal by pressure adsorption method and desulfurization by tannin extraction method; coke oven gas desulfurized by pressure swing adsorption method and tannin extraction method is sent to reciprocating compressor 4, and then sent to the first and second stages of compression in reciprocating compressor 4 to 0.8Mpa, the compressed gas is shifted and desulfurized by the shift gas desulfurization process device 5, and CO is converted into CO 2 and H 2 , and then divided into two parts, one part is directly carbonized by the carbonization device 6; 2 gas, via CO 2 The compressor 8 is pressurized to 0.8 MPa and then enters the carbonization device 6 together with the shift...

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Abstract

The invention belongs to the field of chemical engineering, in particular to an ammonia synthesis process. The process is characterized in that obtained synthesis gases are conveyed to the ammonia synthesis process by ten steps to produce product ammonia. The invention adopts the process technology that crude gas in a coking plant is used as raw material, nitrogen and methane in the crude gas areseparated and purified by utilizing a PSA (Pressure Swing Absorption) device to greatly reduce atmospheric pollutants, such asH2S, NH3 and the like and the emission of CO2. The invention provides a low-cost low-carbon synthetic ammonia production process which can reduce the atmospheric pollutants, such asH2S, NH3 and the like and lessen the emission of CO2.

Description

technical field [0001] The invention belongs to the field of chemical industry, and specifically provides an ammonia synthesis process. Background technique [0002] Ammonia is one of the important inorganic chemical products and occupies an important position in the national economy. The existing synthetic ammonia process uses anthracite as raw material to generate synthetic ammonia. The common process of this technology is: gas production→semi-water gas desulfurization→compressor 1, 2 sections→transformation→transformation gas desulfurization→compressor 3 stage→desulfurization→compressor 4, 5th section → copper washing → 6th section of compressor → ammonia synthesis → product NH 3 , this technology consumes a lot of coal, not only the cost is high, but also a large amount of H 2 S, NH 3 , CO 2 emissions, causing pollution and damage to the environment. Contents of the invention [0003] The purpose of this invention is to provide a low cost, can reduce H 2 S, NH 3...

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Application Information

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IPC IPC(8): C01C1/04
Inventor 汪毅衔彭为良田文慧余曦鲁红辉高建平白生亮祝明明米治平
Owner YULIN HONGYUAN ENVIRONMENT FRIENDLY CHEM
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