Tail-gas treating process in preparation process of calcined clay

A technology for preparation process and exhaust gas treatment, which is applied in the direction of using liquid separation agent, dispersed particle separation, chemical instruments and methods, etc., to achieve the effect of saving treatment cost, simple process and high treatment efficiency

Inactive Publication Date: 2017-11-14
XIANGZHOU COUNTY INST OF SCI & TECHN INFORMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a tail gas treatment process in the preparation process of calcined pottery clay with simple process, high proce

Method used

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  • Tail-gas treating process in preparation process of calcined clay

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example 1

[0017] Such as figure 1 As shown, a tail gas treatment process in the preparation process of calcined clay includes the washing of traditional tail gas treatment methods and the removal of acid gas. The steps are as follows:

[0018] Step 1: Collect waste heat from the tail gas to cool the tail gas.

[0019] Step 2: Pass the tail gas into the water tank to wash the tail gas, the dust and solid particles in the tail gas are precipitated to obtain mud, and the remaining tail gas becomes wet gas.

[0020] Step 3: Pass the wet gas of the tail gas into the NaOH solution, the concentration of the NaOH solution is 8%, and the SO in the tail gas 2 , SO 3 , CO 2 React with NaOH to get sodium salt and clean tail gas.

example 2

[0022] Such as figure 1 As shown, a tail gas treatment process in the preparation process of calcined clay includes the washing of traditional tail gas treatment methods and the removal of acid gas. The steps are as follows:

[0023] Step 1: Collect waste heat from the tail gas to cool the tail gas;

[0024] Step 2: Pass the tail gas into the pool to wash the tail gas, the dust and solid particles in the tail gas are precipitated to obtain mud, and the remaining tail gas becomes wet gas;

[0025] Step 3: Pass the tail gas wet gas into the NaOH solution, the concentration of the NaOH solution is 10%, the SO in the tail gas 2 , SO 3 , CO 2 React with NaOH to get sodium salt and clean tail gas.

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Abstract

The invention discloses a tail-gas treating process in the preparation process of calcined clay. The tail-gas treating process comprises the following steps: cleaning and treating acid-removing gas by traditional tail-gas treating method. The tail-gas treating process is characterized by comprising the detailed steps of: (1) collecting and treating residual heat of tail gas and cooling the tail gas; (2) introducing the tail gas into a water pool, cleaning the tail gas, precipitating dust and solid particles in the tail gas to obtain slurry, wherein residual tail gas becomes wet gas; and (3) introducing wet gas of the tail gas into NaOH solution, enabling SO2, SO3 and CO2 in the tail gas to react with NaOH to obtain and discharge sodium salt and clean tail gas. The tail-gas treating process disclosed by the invention has the advantages that the problem of tail-gas treatment in the traditional manufacturing process of the calcined clay is solved, the residual energy in the tail gas is fully utilized, and the harmful gas components of the tail gas are purified, so that the environment is protected, the tail-gas treating cost of a company is saved, and more benefit for production of the company is saved. The tail-gas treating process has the advantages of simple process, high treating efficiency and low cost.

Description

technical field [0001] The invention belongs to the technical field of tail gas treatment technology, in particular to the tail gas treatment in the preparation process of calcined clay. Background technique [0002] Calcined clay has stable chemical properties. As a rubber filler, it has a smooth appearance of extruded or calendered products, and has the characteristics of acid and alkali resistance, heat resistance and electrical insulation. It can endow EPDM rubber with good insulation, air permeability, Therefore, calcined clay has been widely used in the manufacture of EPDM rubber. At present, calcined clay for EPDM rubber filler mainly relies on imported products from the United States and the United Kingdom, and the exhaust gas in the process of manufacturing calcined clay contains SO 2 , SO 3 , CO 2 Such acid gas and a large amount of dust, if not treated, will be a great burden to the environment, and there is no report on the tail gas treatment process for the m...

Claims

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Application Information

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IPC IPC(8): B01D53/79B01D53/50B01D53/62B01D47/02
CPCB01D47/02B01D53/502B01D53/504B01D53/62B01D53/79B01D2251/304B01D2251/604Y02P70/10
Inventor 李玉秋韦倩梅莫晓君
Owner XIANGZHOU COUNTY INST OF SCI & TECHN INFORMATION
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