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Technique for extracting residual acetylene gas in acetylene generator (wet method) carbide slag slurry

An acetylene generator and calcium carbide slurry technology are applied in the parts of acetylene gas generators, acetylene generators, petroleum industry and other directions, which can solve the problems of environmental pollution and waste of raw material acetylene gas.

Inactive Publication Date: 2008-08-06
常泽民
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Problems solved by technology

During this process, the saturated and dissolved acetylene gas in the supernatant diffuses into the atmosphere during the cooling process, and the acetylene gas adsorbed in the calcium carbide slag filter cake is taken away by the filter cake, resulting in waste of raw material acetylene gas and pollution to the environment
In the same industry in China, there is no technology for extracting and reusing residual acetylene in carbide slag slurry, which is blank

Method used

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  • Technique for extracting residual acetylene gas in acetylene generator (wet method) carbide slag slurry

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Embodiment Construction

[0013] 1. Collect all the carbide slag slurry discharged from the acetylene generator into the buffer tank (V101), and then send it to the desorption tower (T101). The slurry settled at the bottom of the buffer tank is regularly discharged into the settling tank. Under the action of the vacuum pump (P101), the desorption tower (T101) maintains a negative pressure of -0.06~-0.08MPa, and the residual acetylene gas in the carbide slag slurry is decomposed by boiling, and at the same time, the solid Ca(OH) 2 The adsorbed acetylene gas is also separated out, and the water vapor and acetylene gas are separated at the top of the stripping tower (T101). The separated calcium carbide slag slurry flows into the concentration tank (V103) from the sewage outlet at the bottom of the separation tower (T101). The purity of the separated acetylene gas can reach more than 95%, which can be directly incorporated into the acetylene system. The invention adopts a combined desorption tower, which...

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Abstract

The invention relates to a process equipment technique for extracting supersaturated acetylene gas from carbide slag slurry of a wet-method acetylene generator. The technique comprises feeding carbide slag slurry about 80 DEG C into a desorption tower under the state of negative pressure, doffing out acetylene gas which is adsorbed in carbide slag and water through utilizing vapor, damaging a coating layer of micro grain calcium carbide which is not broken up to be further hydrolyzed. Acetylene gas which is doffed is recycled after being processed.

Description

Technical field: [0001] The invention relates to a method for extracting residual acetylene gas from acetylene generator (wet process) carbide slag slurry in the polyvinyl chloride industry. Background technique: [0002] At present, in the domestic polyvinyl chloride industry, the calcium carbide slag slurry is filtered through the thickening tank. After the pressure filtration, the supernatant is recycled, and the calcium carbide slag filter cake with a water content of about 30% is transported away. During this process, the saturated and dissolved acetylene gas in the supernatant diffuses into the atmosphere during the cooling process, and the acetylene gas adsorbed in the calcium carbide slag filter cake is taken away by the filter cake, resulting in waste of raw material acetylene gas and pollution to the environment . In the same domestic industry, there is no technology for extracting and reusing residual acetylene in carbide slag slurry, which is a blank. Inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10H21/00
Inventor 常泽民
Owner 常泽民
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