Denitrification agent, preparation method and dry-method denitrification method

A denitrification agent and denitrification technology, applied in the field of denitrification agent, dry denitrification, and preparation, can solve the problems of low efficiency of dry denitrification, achieve the effects of reducing denitrification cost, improving denitrification efficiency, and reducing operation difficulty

Inactive Publication Date: 2019-02-12
南京清青环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the embodiment of the present invention provides a denitration agent, a preparation method

Method used

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  • Denitrification agent, preparation method and dry-method denitrification method
  • Denitrification agent, preparation method and dry-method denitrification method
  • Denitrification agent, preparation method and dry-method denitrification method

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0027] Example 1 (Preparation of denitration agent)

[0028] Weigh the raw materials according to the following formula. In terms of mass percentage, polyethylene polymer resin 1%, urea 70%, sodium bicarbonate 3%, silica 5%, kaolin 10%, talc 5%, dinitrile amine 5 %, bentonite 1%; the denitrification agent is obtained after mixing the raw materials uniformly, and the denitrification agent is a mixture of powder and granules.

Example Embodiment

[0029] Example 2 (Preparation of denitrification agent)

[0030] Weigh the raw materials according to the following formula. In terms of mass percentage, polyethylene polymer resin 5%, urea 47%, sodium bicarbonate 5%, silicon dioxide 8%, kaolin 13%, talc powder 7%, biscyanamide 10 %, bentonite 5%; each raw material powder is ground to a particle size of 100-120 mesh powder, and then the raw materials are mixed uniformly to obtain a denitrification agent. The denitrification agent is in powder form.

Example Embodiment

[0031] Example 3 (Preparation of denitration agent)

[0032] Weigh the raw materials according to the following formula. In terms of mass percentage, polyethylene polymer resin 8%, urea 30%, sodium bicarbonate 8%, silicon dioxide 10%, kaolin 15%, talc 8%, dinitrile 13 %, bentonite 8%; firstly grind each raw material powder to a particle size of 100-120 mesh powder, then mix polymer resin, urea, sodium bicarbonate, talc, dinitrile amine and bentonite into the first mixture, and finally Silica and kaolin are added to the first mixture and mixed uniformly to form a denitrification agent.

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Abstract

The invention discloses a denitrification agent, a preparation method and a dry-method denitrification method, and relates to the technical field of smoke treatment. The denitrification agent is prepared from: 1 to 15 percent of macromolecular resin, 30 to 70 percent of urea, 1 to 15 percent of sodium hydrogen carbonate, 5 to 20 percent of silicon dioxide, 10 to 20 percent of kaolin, 5 to 10 percent of talcum powder, 5 to 20 percent of diacetonitrile, and 1 to 30 percent of bentonite. The method comprises the following steps: mixing all the raw materials to obtain the denitrification agent. The denitrification method comprises the following steps: spraying the denitrification agent into a temperature area of 750 to 1000 DEG C in a hearth, reacting, and removing the nitrogen oxide in the smoke. The denitrification efficiency of the denitrification agent for the smoke is at least 80 percent or above; the SCR process can be completely substituted; the denitrification cost can be reduced;the operation difficulty can be reduced; the denitrification efficiency can be improved, and the emission standard of the nitrogen oxide can be reached.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment, in particular to a denitration agent, a preparation method and a dry denitration method. Background technique [0002] In the current flue gas treatment and denitrification system, selective non-catalytic reduction (SNCR) refers to the reduction of nitrogen oxides in the flue gas to harmless of nitrogen and water. This technology generally uses ammonia, urea or hydrogen acid in the furnace as a reducing agent to reduce NOx. The reducing agent only reacts with NOx in the flue gas, and generally does not react with oxygen. This technology does not use a catalyst, so this method is called Selective Non-Catalytic Reduction (SNCR). Since the process does not use a catalyst, a reducing agent must be added in the high temperature zone. The SNCR process is relatively simple, but the denitrification efficiency is low, which cannot meet the increasingly stringent environmental protection requ...

Claims

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Application Information

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IPC IPC(8): B01D53/00
CPCB01D53/00B01D2257/40
Inventor 姚建裔中平
Owner 南京清青环保科技有限公司
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