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Method for drying honeycomb type denitrated ceramic catalyst

A technology of ceramic catalyst and drying method, which is applied in the direction of drying gas arrangement, drying, drying machine, etc., can solve the problems of long drying time, large energy consumption in drying process, small processing capacity, etc., and achieve high product quality and drying ability. Strong and energy-saving effect

Active Publication Date: 2014-10-29
GUANGXI MEIZHIFENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a drying method for a honeycomb denitration ceramic catalyst, which can solve the problems of high energy consumption, long drying time and small processing capacity in the drying process

Method used

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  • Method for drying honeycomb type denitrated ceramic catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Its drying process is as follows:

[0022] First drying process:

[0023] a. Place the prepared honeycomb denitration ceramic catalyst shaped body in a drying chamber;

[0024] b. Through the blower, the air volume is 4000m 3 / h, send hot air into the drying room from the air inlet of the drying room, keep the indoor temperature at 50°C, and the humidity at 65%, for 4 days;

[0025] During this process, the free water in the honeycomb body of the honeycomb denitrification ceramic catalyst is squeezed out and gradually taken away;

[0026] Second drying process:

[0027] a. The honeycomb type denitration ceramic catalyst honeycomb body obtained in the first drying process is placed in a drying box,

[0028] b. Send hot air from the air inlet of the drying box into the drying box by a blower, and keep the temperature in the box at 100°C until the moisture content of the honeycomb denitration ceramic catalyst is 2%.

[0029] During this process, when the hot air passe...

Embodiment 2

[0031] Its drying process is as follows:

[0032] First drying process:

[0033] a. Place the prepared honeycomb denitration ceramic catalyst shaped body in a drying chamber;

[0034] b. Through the blower, the air volume is 4000m 3 / h, send hot air into the drying room from the air inlet of the drying room, keep the indoor temperature at 55°C, and the humidity at 60%, for 4 days;

[0035] During this process, the free water in the honeycomb body of the honeycomb denitrification ceramic catalyst is squeezed out and gradually taken away;

[0036] Second drying process:

[0037] a. The honeycomb type denitration ceramic catalyst honeycomb body obtained in the first drying process is placed in a drying box,

[0038] b. Send hot air from the air inlet of the drying box into the drying box by a blower, and keep the temperature in the box at 105°C until the moisture content of the honeycomb denitration ceramic catalyst is 1.8%.

[0039] During this process, when the hot air pas...

Embodiment 3

[0041] Its drying process is as follows:

[0042] First drying process:

[0043] a. Place the prepared honeycomb denitration ceramic catalyst shaped body in a drying chamber;

[0044] b. Through the blower, the air volume is 4000m 3 / h, send hot air into the drying room from the air inlet of the drying room, keep the indoor temperature at 60°C, and the humidity at 55%, for 4 days;

[0045] During this process, the free water in the honeycomb body of the honeycomb denitrification ceramic catalyst is squeezed out and gradually taken away;

[0046] Second drying process:

[0047] a. The honeycomb type denitration ceramic catalyst honeycomb body obtained in the first drying process is placed in a drying box,

[0048] b. Send hot air from the air inlet of the drying box into the drying box by a blower, and keep the temperature in the box at 110°C until the moisture content of the honeycomb denitration ceramic catalyst is 1.5%.

[0049] During this process, when the hot air pas...

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Abstract

The invention discloses a method for drying a honeycomb type denitrated ceramic catalyst and belongs to the technical field of catalysts for the selective catalytic reduction method. The method for drying the honeycomb type denitrated ceramic catalyst comprises the first drying step of drying the honeycomb type denitrated ceramic catalyst through a drying device and the second drying step of drying the honeycomb type denitrated ceramic catalyst through a drying device. According to the method for drying the honeycomb type denitrated ceramic catalyst, the whole drying process is conducted in a circulating mode, no waste gas is generated, and environmental pollution is avoided; heat is fully utilized, the drying capacity is high, long-term experiment results show that the drying yield reaches 91%, energy is saved, and the production cost is also reduced.

Description

technical field [0001] The invention relates to the technical field of catalysts for selective catalytic reduction methods, in particular to a drying method for honeycomb denitration ceramic catalysts. Background technique [0002] During the power generation process of thermal power plants, flue gas containing nitrogen oxides NOx will be produced, and nitrogen oxides NOx x It is one of the main sources of air pollution at present. At present, thermal power plants mostly use selective catalytic reduction to reduce the pollution of nitrogen oxides. Honeycomb denitrification ceramic catalyst is one of the core technologies of the selective catalytic reduction system, and its cost usually accounts for 30%-50% of the total investment of the denitrification device. Wherein, the drying method and drying device of the catalyst in the preparation process determine the shape stability of the prepared honeycomb denitration ceramic catalyst, thereby affecting the catalytic effect. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B21/06
Inventor 罗玉宏
Owner GUANGXI MEIZHIFENG TECH
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