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Device for catalytic denitration reaction by preheating waste incineration flue gas

A technology for catalytic denitrification and waste incineration, which can be applied to combined devices, chemical instruments and methods, and dispersed particle separation. The effect of filtering performance

Inactive Publication Date: 2014-04-09
HENAN UNIV OF SCI & TECH
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  • Description
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Problems solved by technology

[0005] The purpose of the present invention is to provide a waste incineration flue gas preheating catalytic denitrification reaction device to solve the problem of low denitrification efficiency caused by uneven preheating of flue gas in existing denitrification reaction towers

Method used

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  • Device for catalytic denitration reaction by preheating waste incineration flue gas

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Embodiment Construction

[0018] Example 1 of waste incineration flue gas preheating catalytic denitration reaction device, such as figure 1 As shown, there is a housing 1 which is cylindrical and divided into two sections, an upper half section and a lower half section. The upper half section and the lower half section are flange-connected, and a two-section housing 1 is adopted. The parts inside the housing 1 can be easily replaced. The upper end of the upper half section is provided with a clean flue gas outlet 1-1 for the treated clean flue gas to discharge, and the lower end of the lower half section is provided with a corresponding flue gas outlet 1-1. In the flue gas inlet, the casing 1 is provided with an air flow channel between the flue gas inlet and the clean flue gas outlet 1-1; the lower end of the casing 1 is provided with a pre-heating unit at the flue gas inlet. The heating unit is used for pre-heating the flue gas entering the air flow channel to improve its catalytic reaction efficienc...

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Abstract

The invention relates to a device for a catalytic denitration reaction by preheating waste incineration flue gas, which comprises a housing; a flue gas inlet is disposed at the lower end of the housing; a clean flue gas outlet is disposed at the upper end of the housing; a gas flow channel is disposed inside the housing; a catalytic reaction unit and a particle removing device are orderly disposed in the gas flow channel from top to bottom; a preheating unit is disposed at the flue gas inlet; the preheating unit comprises a heater and a preheating bed layer disposed above the heater; the preheating bed layer comprises a preheating bed; a preheating bed material is disposed on the preheating bed, can be fluidized when flue gas passes through the preheating bed, and can exchange heat with the flue gas; during operation, flue gas which is heated by the heater and is to enter the catalytic reaction unit for reaction firstly passes through the preheating bed layer and allows the preheating bed material on the preheating bed layer to be fluidized, so the flue gas nonuniformly heated in the heater is fully mixed to become isothermal, which solves the problem of low denitration efficiency caused by nonuniform flue gas preheating for current denitration reaction towers.

Description

Technical field [0001] The invention relates to the field of flue gas pollution control, in particular to a waste incineration flue gas preheating catalytic denitrification reaction device suitable for garbage power plants, waste incineration power plants and coal-fired power plants. Background technique [0002] With the rapid economic development, the problems caused by limited resources, environmental degradation and population growth have become increasingly prominent, and the rational, clean and efficient use of limited resources has become crucial. Municipal solid waste incineration technology is an efficient treatment technology. Compared with composting and chemical treatment, this technology has the advantages of thorough harmlessness, significant volume reduction, and high degree of resource utilization. However, in the incineration process, due to the limitations of the operation technology, it is easy to cause secondary pollution. Among them, the NOx pollutants in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/56B01D50/00
Inventor 王学涛徐斌吴健屈成锐刘春梅刘建新吴凤英兰维娟赵红杰
Owner HENAN UNIV OF SCI & TECH
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