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A method for purifying tail gas of calcium carbide furnace

A technology for calcium carbide furnace tail gas and tail gas, applied in chemical instruments and methods, separation methods, dispersed particle filtration, etc., can solve the problem of difficult and efficient removal of calcium carbide furnace tail gas dust particles, etc., to improve gas-liquid contact efficiency and purification effect , Efficient removal effect

Inactive Publication Date: 2016-08-17
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

The currently known dust treatment methods mainly include wet treatment and dry treatment. These two methods have their own advantages and disadvantages. It is difficult for existing technologies to efficiently remove dust particles in the tail gas of calcium carbide furnaces. Therefore, it is urgent to develop a more It is an effective technical means to treat the exhaust gas to obtain clean exhaust gas

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  • A method for purifying tail gas of calcium carbide furnace
  • A method for purifying tail gas of calcium carbide furnace
  • A method for purifying tail gas of calcium carbide furnace

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Embodiment

[0029] like figure 1 , figure 2 As shown, the temperature of the exhaust gas of the calcium carbide furnace is about 600°C, and the exhaust gas contains CO, dust, etc. The exhaust gas first enters the absorption tower 1, and after the gas inlet 2 of the absorption tower enters the absorption tower 1, it becomes four branch inlets 6. The branch inlets 6 are evenly distributed in the absorption tower along the oblique line from top to bottom, and the uppermost branch inlet is far from the gas inlet. 2 is the closest, and the lowermost branch inlet is farthest from the gas inlet 2. The 4 branch inlets can basically realize the uniform distribution of gas. A corresponding sprayer 5 is provided on the upper part of each branch entrance, and the sprayer 5 is 1m away from the branch entrance. Since the gas inlet is divided into several branch inlets, the capture efficiency can be improved by setting corresponding sprayers at each branch inlet, and the distribution degree of the t...

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Abstract

The invention relates a purification method for tail gas of a calcium carbide furnace. The invention aims at providing an effective process, and solid dust particles and the like in the tail gas of the calcium carbide furnace can be removed, so that the clean emission of the tail gas is realized. The purification method particularly comprises a wet-process absorption step and a dry-process dust removing step; and in the wet-process absorption step, dust in the tail gas can be absorbed by an absorption tower, and in the dry-process dust removing step, residual dust in the gas can be further removed by adopting a dust remover.

Description

technical field [0001] The invention relates to a method for purifying tail gas of a calcium carbide furnace. Background technique [0002] Calcium carbide production is generally carried out in calcium carbide furnaces, where high temperatures are generated by electric arcs, and calcium oxide reacts with carbon to form calcium carbide (calcium carbide) and carbon monoxide. In addition to a large amount of carbon monoxide, the exhaust gas of the closed calcium carbide furnace also contains a large amount of dust. For example, about 400 cubic meters of exhaust gas can be produced by producing one ton of calcium carbide furnace. The exhaust gas of calcium carbide furnace mainly contains CO, H 2 etc., more than 85% of which are CO gas. For the treatment of calcium carbide furnace tail gas, most enterprises burn it with torches, which pollutes the environment and wastes carbon monoxide resources. Carbon monoxide can be used to manufacture sodium formate, ethylene glycol and oth...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/62B01D50/00B01D46/00
Inventor 吴浩
Owner HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH