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Method for producing synthetic ammonia by utilizing chlor-alkali byproduct hydrogen

A technology for synthesizing ammonia and hydrogen, applied in the chemical industry, can solve the problems of many three wastes, many steps, and high energy consumption, and achieve the effects of no three wastes, fewer steps, and low energy consumption

Inactive Publication Date: 2013-01-23
SHANDONG DADI SALT CHEM GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing method has a long process, many steps, a lot of three wastes, and high energy consumption

Method used

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  • Method for producing synthetic ammonia by utilizing chlor-alkali byproduct hydrogen
  • Method for producing synthetic ammonia by utilizing chlor-alkali byproduct hydrogen
  • Method for producing synthetic ammonia by utilizing chlor-alkali byproduct hydrogen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] like figure 1 As shown, hydrogen with a purity of 99.99% from the chlor-alkali plant enters the hydrogen gas cabinet, the gas cabinet pressure is 6KPa, and is transported to the compressed air storage tank by the Roots blower, and the cryogenic nitrogen generating device performs cryogenic separation of the air, and the separated Oxygen and argon are packaged separately for sale, and the nitrogen separated from the cryogenic nitrogen plant with a purity of 99.99% is mixed with the hydrogen sent by the Roots blower. The ratio of nitrogen and hydrogen is adjusted by controlling the flow rate of the gas, according to the required ratio ( H / N volume ratio control 2.8:1) After mixing, it enters the compressed air storage tank, and after the compressor of the compressed air storage tank lifts the pressure to 2.6MPa, it enters the dechlorination tower, and in the HT-403 fine dechlorination agent (Hua Te, Hubei Er Purification Technology Co., Ltd.) to purify the mixed raw mater...

Embodiment 2

[0027] like figure 1 As shown, the hydrogen gas with a purity of 99.99% from the chlor-alkali plant enters the hydrogen gas cabinet, and the gas cabinet pressure is 5KPa. In the hydrogen gas cabinet, it is mixed with the hydrogen gas with a purity of 98% from the pressure swing adsorption hydrogen extraction device, and is transported by the Roots blower. To the compressed air storage tank, the cryogenic nitrogen generating device conducts cryogenic separation of the air, and the separated oxygen and argon are packaged separately for sale. The 99.99% purity nitrogen separated from the cryogenic nitrogen generating device is sent by the Roots blower Hydrogen, adjust the ratio of nitrogen and hydrogen by controlling the flow rate of the gas, mix according to the required ratio (H / N volume ratio control 2.5:1), enter the compressed air storage tank, and pressurize the compressor of the compressed air storage tank to After 2.0MPa, it enters the dechlorination tower, purifies the m...

Embodiment 3

[0031] like figure 1 As shown, the hydrogen with a purity of 99.99% from the chlor-alkali plant enters the hydrogen gas tank, the pressure of the gas tank is 7KPa, in the hydrogen gas tank, it is mixed with the hydrogen with a purity of 98% from the pressure swing adsorption hydrogen extraction device, and transported by the Roots blower To the compressed air storage tank, the cryogenic nitrogen generating device conducts cryogenic separation of the air, and the separated oxygen and argon are packaged separately for sale. The 99.99% purity nitrogen separated from the cryogenic nitrogen generating device is sent by the Roots blower Hydrogen, adjust the ratio of nitrogen and hydrogen by controlling the flow rate of the gas, mix according to the required ratio (H / N volume ratio control 3.0:1) and then enter the compressed air storage tank, and the compressor of the compressed air storage tank will boost the pressure to After 3.0MPa, it enters the dechlorination tower, purifies th...

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Abstract

The invention discloses a method for producing synthetic ammonia by utilizing chlor-alkali byproduct hydrogen. The method comprises the following steps: mixing byproduct hydrogen of the chlor-alkali industry with nitrogen in a certain ratio, and performing ammonia refining on the mixed gas. The invention has the following advantages: compared with the existing synthetic ammonia industry, the method utilizes byproduct hydrogen of the chlor-alkali industry to synthesize ammonia, the process flow is short, the steps are fewer, the wastes are fewer, and three wastes are hardly generated; and the energy consumption is low, the byproduct hydrogen of the chlor-alkali industry can be fully utilized, energy is saved, wastes can be changed into valuable, and the zero emission of the byproduct hydrogen of the chlor-alkali industry can be realized.

Description

technical field [0001] The invention relates to a method for synthesizing ammonia, in particular to a method for producing synthetic ammonia by utilizing chlor-alkali by-product hydrogen, which belongs to the field of chemical industry. Background technique [0002] The existing production method of synthetic ammonia is to first prepare the mixed gas containing nitrogen and hydrogen, then desulfurize it, convert carbon monoxide, remove carbon dioxide and hydrogen sulfide, absorb the remaining carbon monoxide, carbon dioxide and hydrogen sulfide through the refining process, and convert The obtained pure hydrogen and nitrogen are synthesized to produce synthetic ammonia. The existing method has a long process flow, many steps, a lot of three wastes, and high energy consumption. Contents of the invention [0003] In order to solve the above problems, the present invention designs a method for producing synthetic ammonia by using chlor-alkali by-product hydrogen, which uses ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01C1/04
Inventor 孙文勇李迎堂宋永良王宗强张琦郭宏斌
Owner SHANDONG DADI SALT CHEM GROUP
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