Rapid drying and calcination method for honeycomb denitration catalyst

A denitration catalyst and rapid drying technology, which can be used in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc. Effect

Inactive Publication Date: 2019-11-12
ZHEJIANG TUNA ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the traditional honeycomb denitrification catalyst mainly includes ingredients mixing, molding, hot air drying, electric kiln calcination and finished product packaging. The whole production cycle is long, generally 20-22 days

Method used

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  • Rapid drying and calcination method for honeycomb denitration catalyst
  • Rapid drying and calcination method for honeycomb denitration catalyst
  • Rapid drying and calcination method for honeycomb denitration catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A honeycomb type denitration catalyst rapid drying and calcination method, comprising the following steps:

[0040] Step 1: Pack the extruded 150×150×300mm, 18*18-hole catalyst wet embryo in a carton called sponge and put it on a plastic board with a porosity of 63-73%. Place the plastic board on the on the drying trolley;

[0041] Step 2: After the drying trolley is full, push it into a microwave drying device in the form of a tunnel kiln. The microwave drying device is equipped with 12 microwave sources along the moving direction of the drying trolley. The specific microwave source setting parameters are shown in Table 1 below:

[0042] Table I

[0043]

[0044] The speed of the drying trolley is set to 0.5m / h;

[0045] Step 3: After the drying trolley drives out of the microwave drying device, remove the packaging carton of the dried catalyst body and put it on the calcining trolley, and push the calcining trolley into the microwave calcination device in the for...

Embodiment 2

[0050] A honeycomb type denitration catalyst rapid drying and calcination method, comprising the following steps:

[0051] Step 1: Pack the extruded 150×150×600mm, 22*22-hole wet catalyst embryo in a carton called sponge and put it on a plastic board with a porosity of 63-73%. Place the plastic board on a dry on the trolley;

[0052] Step 2: After the drying trolley is full, push it into the microwave drying device in the form of a tunnel kiln. The microwave drying device is equipped with 12 microwave sources along the moving direction of the drying trolley. The specific microwave source setting parameters are shown in Table 3 below:

[0053] Table three

[0054]

[0055] The speed of the drying trolley is set at 0.45m / h;

[0056] Step 3: After the drying trolley drives out of the microwave drying device, remove the catalyst packaging carton and put it on the calcining trolley, and push the trolley into the microwave calcination device in the form of a tunnel kiln. The trol...

Embodiment 3

[0061] A honeycomb type denitration catalyst rapid drying and calcination method, comprising the following steps:

[0062] Step 1: Pack the extruded 150×150×900mm, 30*30-hole catalyst wet embryo in a carton called sponge and put it on a plastic board with a porosity of 63-73%. Place the plastic board in a dry place on the trolley;

[0063] Step 2: After the drying trolley is full, push it into the microwave drying device in the form of a tunnel kiln. The microwave drying device is equipped with 12 microwave sources along the moving direction of the drying trolley. The specific microwave source setting parameters are shown in Table 5 below:

[0064] Table five

[0065]

[0066] The speed of the drying trolley is set to 0.4m / h;

[0067] Step 3: After the drying trolley drives out of the microwave drying device, remove the catalyst packaging carton and put it on the calcining trolley, and push the trolley into the microwave calcination device in the form of a tunnel kiln. Th...

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Abstract

The invention discloses a rapid drying and calcination method for a honeycomb denitration catalyst. The method comprises the following steps: step 1, packaging a catalyst wet blank after extrusion molding by using a carton, putting the packaged catalyst onto an open plastic plate, and placing the plastic plate onto a drying trolley; step 2, after the drying trolley is filled, pushing the drying trolley into a microwave drying device in the form of a tunnel kiln, and allowing the drying trolley to automatically run to an outlet of the microwave drying device according to a set speed to completedrying operation; and step 3, after the packaging carton is removed, immediately putting the catalyst onto a calcining trolley, pushing the calcining trolley into a microwave calcining device in theform of a tunnel kiln, and allowing the trolley to automatically run to an outlet of the calcining device according to a set speed to complete calcining operation. By adopting the above technical solution provided by the invention, the activity of the catalyst can be ensured, and the production time can be shortened.

Description

technical field [0001] The invention relates to the field of catalyst production, in particular to a rapid drying and calcining method for a honeycomb denitration catalyst. Background technique [0002] In recent years, with the rapid development of society and economy, people are paying more and more attention to their own living environment, especially atmospheric problems that constantly affect human survival. The main pollutants currently polluting the atmosphere are sulfides and nitrogen oxides. [0003] Among them, the treatment method of nitrogen oxides in tail gas is mainly based on SCR technology, which is currently the most widely used flue gas denitrification technology, and its core lies in the selection of denitrification catalysts. Existing denitrification catalysts include three types: honeycomb type, flat plate type and corrugated plate type. Among them, the honeycomb type denitrification catalyst occupies more than 50% of the market share due to its large s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/08B01J37/34F26B5/16F26B23/08F27B9/06F27B9/26F27B9/36F27B9/38F27D17/00
CPCB01J37/08B01J37/346F26B5/16F26B23/04F27B9/067F27B9/26F27B9/36F27B9/38F27D17/008F27B2009/382Y02P10/25
Inventor 赵博王阔张海迪李浙飞詹晓丹沈刚峰
Owner ZHEJIANG TUNA ENVIRONMENTAL SCI & TECH
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