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Novel denitration and dust removal device for cement kilns

A technology for denitrification and dust removal and cement kiln, which is applied in transportation and packaging, dispersed particle filtration, metal/metal oxide/metal hydroxide catalyst, etc. It can solve the problems of low dust removal efficiency, complex structure, and large floor area. Achieve the effect of reducing floor area, good filtering effect and easy maintenance and repair

Inactive Publication Date: 2019-07-26
XIAN XIKUANG ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the desulfurization, denitrification and dust removal technologies in flue gas are in the research and industrial demonstration stage, and most of the existing denitrification and dust removal devices are complex in structure, occupy a large area and have low denitrification and dust removal efficiency

Method used

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  • Novel denitration and dust removal device for cement kilns
  • Novel denitration and dust removal device for cement kilns
  • Novel denitration and dust removal device for cement kilns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]1) Mud mixing: Put attapulgite in 7mol / L HCl solution, stir at 80°C for 8 hours, wash and dry, and grind to 400 mesh. Dry mix 22 parts of modified attapulgite, 28 parts of anatase titanium dioxide, 2 parts of γ-alumina, 4 parts of silicon dioxide, and 1 part of tungsten trioxide, add 2 parts of cerium nitrate, metavanadic acid 2 parts of ammonium, 3 parts of manganese nitrate solution with a volume ratio of 50%, and deionized water to prepare a slurry. Add the prepared ammonium metavanadate solution and cerium nitrate solution to the above slurry and stir evenly. The evaporator evaporates under reduced pressure to remove water. Calcinate the completely dried material at a high temperature of 500°C to activate the activity, grind it to 400 mesh, and obtain a catalyst powder; mix 50 parts of catalyst powder, 2 parts of calcium oxide, 2 parts of magnesium oxide, and 0.2 parts of polycarboxylate superplasticizer , 3 parts of carboxymethyl cellulose, 2 parts of stearic acid,...

Embodiment 2

[0036] 1) Mud mixing: Put attapulgite in 6mol / L HCl solution, stir at 80°C for 8 hours, wash and dry, and grind to 400 mesh. Dry mix 30 parts of modified attapulgite, 30 parts of anatase titanium dioxide, 3 parts of γ-alumina, 5 parts of silicon dioxide, and 1.5 parts of tungsten trioxide, add 3 parts of cerium nitrate, metavanadic acid 3 parts of ammonium, 6 parts of manganese nitrate solution with a volume ratio of 50%, and deionized water to prepare a slurry. Add the prepared ammonium metavanadate solution and cerium nitrate solution to the above slurry and stir evenly. The evaporator evaporates under reduced pressure to remove water. Calcinate the completely dried material at a high temperature of 500°C to activate the activity, grind it to 400 mesh, and obtain a catalyst powder; mix 80 parts of catalyst powder, 3 parts of calcium oxide, 3 parts of magnesium oxide, and 0.3 parts of polycarboxylate superplasticizer , 7 parts of carboxymethyl cellulose, 3 parts of stearic a...

Embodiment 3

[0042] 1) Mud mixing: Put attapulgite in 6mol / L HCl solution, stir at 80°C for 8 hours, wash and dry, and grind to 400 mesh. Dry mix 25 parts of modified attapulgite, 25 parts of anatase titanium dioxide, 2 parts of γ-alumina, 4 parts of silicon dioxide, and 1.5 parts of tungsten trioxide, add 2 parts of cerium nitrate, metavanadic acid 3 parts of ammonium, 5 parts of manganese nitrate solution with a volume ratio of 50%, and deionized water to prepare a slurry. Add the prepared ammonium metavanadate solution and cerium nitrate solution to the above slurry and stir evenly. The evaporator evaporates under reduced pressure to remove water. Calcinate the completely dried material at a high temperature of 500°C to activate the activity, grind it to 400 mesh, and obtain a catalyst powder; mix 65 parts of catalyst powder, 3 parts of calcium oxide, 2 parts of magnesium oxide, and 0.2 parts of polycarboxylate superplasticizer , 5 parts of carboxymethyl cellulose, 2 parts of stearic a...

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Abstract

The invention provides a novel denitration and dust removal device for cement kilns. The novel denitration and dust removal device for cement kilns comprises a flue gas inlet and a flue gas outlet. The flue gas inlet is connected to an air inlet flue, two-fluid spray guns are annularly arranged on the air inlet flue, an airflow partition plate inclining by 30-60 degrees is arranged in a denitration dust remover shell, a plurality of groups of end-closed ceramic membrane tubes are arranged on the airflow partition plate, a compressed air shock wave soot blower and an acoustic soot blower are arranged on two sides above the end-sealed ceramic membrane pipes respectively, and a first soot pit and a second soot pit are arranged on the left side and the right side of the airflow partition platerespectively and at the bottom of the shell. The novel denitration and dust removal device for cement kilns can achieve denitration and dust removal simultaneously and is higher in denitration and dust removal efficiency, smaller in size and convenient to maintain and repair.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a novel cement kiln denitrification and dust removal device. Background technique [0002] In industrial production, waste gas will inevitably be produced, and if these waste gases are discharged into the air without treatment, they will definitely have an impact on the environment. Among them, gaseous waste gas is the most diverse and most harmful industrial waste gas. At present, gaseous waste gas mainly includes nitrogen-containing organic waste gas, sulfur-containing waste gas and hydrocarbon organic waste gas. [0003] (1) Nitrogen-containing waste gas. Such exhaust gases can damage the composition of the air, altering the gas composition. Especially the combustion of petroleum products, the amount of combustion of petroleum products in industrial production is huge, and the content of nitrogen compounds in petroleum products is large, so the exhaust gas ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D46/54B01D46/00B01J23/34B01D53/56
CPCB01D53/8625B01D46/543B01J23/002B01J23/34B01J2523/00B01D46/71B01J2523/31B01J2523/3712B01J2523/41B01J2523/47B01J2523/55B01J2523/69B01J2523/72
Inventor 李海波雷华杨晓波
Owner XIAN XIKUANG ENVIRONMENTAL PROTECTION
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