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Technique of carbonizing gas supply in procedure of producing soda under joint alkaline process

A technology of production process and combined alkali method, which is applied in the direction of alkali metal compounds, alkali metal carbonates, inorganic chemistry, etc., can solve the problems of increased production costs, increased equipment costs, and large equipment investment, so as to save equipment costs , Saving industrial costs and shortening the air supply process

Active Publication Date: 2008-10-15
赵祥海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This gas supply process has the following defects: 1. The equipment investment is large. Calculated with the soda ash production capacity of 250,000 tons / year, 4 superchargers are needed, and the cost of each supercharger is about 400,000 yuan. Therefore, the equipment needs to be increased The cost is 1.6 million yuan; 2. The process of gas is long, and it is necessary to increase the number of supercharger operators, which will increase the production cost; 3. The energy consumption is large. The motor power of a supercharger is 320KW, 250,000 tons / year The energy consumption per ton of soda scale is 40KW.h

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Example 1. A carbonization gas supply process in the soda ash production process of the combined soda process. The steps are as follows: firstly, the raw material gas is input into a high-pressure press with seven stages of compression, and then the raw material gas with a pressure of 1.3 MPa is output from the third-stage outlet of the high-pressure press and sent to the converter furnace. Finally, the shift gas output from the shift furnace is directly sent to the carbonization tower for carbonization reaction, and the 0.7MPa gas at the outlet of the carbonization tail gas purification tower is directly sent to the fourth stage of the compressor.

Embodiment 2

[0008] Example 2. A carbonization gas supply process in the soda ash production process of the combined soda process, the steps are as follows: firstly, the raw material gas is input into a high-pressure press with seven stages of compression, and then the raw material gas with a pressure of 1.5 MPa is output from the third-stage outlet of the high-pressure press and sent to the converter furnace. Finally, the shift gas output from the shift furnace is directly sent to the carbonization tower for carbonization reaction, and the 0.7MPa gas at the outlet of the carbonization tail gas purification tower is directly sent to the fourth stage of the compressor.

Embodiment 3

[0009] Example 3. A carbonization gas supply process in the soda ash production process of the combined soda method, the steps are as follows: firstly, the raw material gas is input into a high-pressure press with seven stages of compression, and then the raw material gas with a pressure of 1.4 MPa is output from the third-stage outlet of the high-pressure press and sent to the converter furnace. Finally, the shift gas output from the shift furnace is directly sent to the carbonization tower for carbonization reaction, and the 0.7MPa gas at the outlet of the carbonization tail gas purification tower is directly sent to the fourth stage of the compressor.

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PUM

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Abstract

This invention discloses a carbonization gas-supply process during the production of caustic soda by united alkali method. The process comprises: introducing raw material gas into a high-pressure compressor with seven-step compression, introducing raw material gas with a pressure of 1.3-1.5 MPa from the high-pressure compressor into a conversion furnace, introducing converted gas from the conversion furnace into a carbonization column for carbonization reaction, and introducing the exit gas of 0.7 MPa from the exhaust purification column into the fourth section of a compressor. The gas-supply process is simple, and can have the same effect as the previous process.

Description

technical field [0001] The invention relates to a soda ash production process by a combined soda method, in particular to a carbonization gas supply process in the soda ash production process by a combined soda method. Background technique [0002] The carbonization gas supply process in the traditional soda ash production process is: the raw material gas (semi-water gas) is pressurized to 0.8MPa from the second-stage outlet of the high-pressure machine and enters the converter furnace, and then the gas is input into the carbonization tower for carbonization reaction. 0.7MPa is then compressed to 1.25MPa by a supercharger and sent to the third-stage inlet of the synthesis compressor. This gas supply process has the following defects: 1. The equipment investment is large. Calculated with the soda ash production capacity of 250,000 tons / year, 4 superchargers are needed, and the cost of each supercharger is about 400,000 yuan. Therefore, increase the equipment The cost is 1.6 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01D7/00
Inventor 赵祥海
Owner 赵祥海