A kind of denitrification catalyst and preparation method thereof

The technology of a denitration catalyst and a treatment method is applied in the field of catalyst resource utilization, and can solve the problems of reducing catalyst production cost, raw material loss, environmental pollution, cost increase, etc., and achieves reduction of production cost and raw material loss, production cost, production cost reduced effect

Active Publication Date: 2019-03-12
YIXING YIGANG ENVIRONMENTAL PROTECTION ENG & MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first object of the present invention is to provide a method for preparing a denitrification catalyst, so as to solve the problems of environmental pollution, waste of resources, and increased cost caused by the excessive waste of denitrification catalysts in the prior art. The preparation method of the present invention The process is simple and suitable for industrialization. Through the preparation method, the production of the denitration catalyst forms a closed loop, which greatly reduces the production cost of the catalyst and the loss of raw materials.

Method used

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  • A kind of denitrification catalyst and preparation method thereof

Examples

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preparation example Construction

[0042] The present invention provides a kind of preparation method of denitration catalyst, comprises the following steps:

[0043] (a) mixing waste from the production process of the denitrification catalyst with the waste denitrification catalyst, making pulp, pressing, calcining and pulverizing to obtain clinker;

[0044] (b) After kneading the clinker, carrier, surface treatment agent, and active components, molding, drying, and calcining to obtain the catalyst.

[0045] In a preferred embodiment of the present invention, the waste from the production process of the denitration catalyst includes: waste sludge, waste water, fly ash and tail gas.

[0046] In a preferred embodiment of the present invention, the method for collecting and treating waste from the production process of the denitration catalyst includes:

[0047] The waste mud and waste water generated during the flushing production process are collected and precipitated through the pool to obtain the A material;...

Embodiment 1

[0063] The preparation method of the denitration catalyst described in this embodiment comprises the following steps:

[0064] (a) Preparation of clinker

[0065] Collection and disposal of waste from the production process of denitrification catalysts:

[0066] The waste mud and waste water generated during the process of flushing and producing the denitrification catalyst are collected and precipitated through the pool to obtain material A;

[0067] The fly ash is directly collected through the dust collector at the production site to obtain material B;

[0068] Through the ammonia washing tower and the tail gas absorption tower, the liquid and tail gas in the production process are processed and absorbed, and the generated wastewater is sent to the pool to collect the sediment to obtain the C material;

[0069] The material A, material B and material C obtained above are uniformly mixed to obtain the production process waste of the denitration catalyst.

[0070] Collecti...

Embodiment 2

[0077] This example refers to the preparation method of Example 1, and the only difference is that in the step (a), the obtained waste from the production process of the denitration catalyst and the waste denitration catalyst are mixed and pulped at a mass ratio of 10:1.

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Abstract

The invention relates to the technical field of catalyst resource utilization, and particularly relates to a denitration catalyst and a preparation method thereof. The preparation method of the denitration catalyst comprises the following steps: (a) mixing and pulping wastes and waste denitration catalysts during production of the denitration catalyst, and filter-pressing, calcining and grinding,to obtain clinker; and (b) mixing the clinker, carriers, surface treating agents and active components, forming and drying, and calcinating to obtain the catalyst. By specially treating waste generated during production of the denitration catalyst and waste denitration catalyst generated after recycling non-renewable catalysts, fresh raw materials for producing the catalyst can be decreased by 50-70%, the production consumption can be decreased by 60%, the pollution of wastes to environment can be alleviated, and the production cost can be greatly lowered.

Description

technical field [0001] The invention relates to the technical field of catalyst resource utilization, in particular to a denitration catalyst and a preparation method thereof. Background technique [0002] In a chemical reaction, a substance that can change the chemical reaction rate of the reactants without changing the chemical balance, and whose mass and chemical properties do not change before and after the chemical reaction is called a catalyst. According to statistics, more than 90% of industrial processes use catalysts, such as chemical industry, petrochemical, biochemical, environmental protection, etc. The use of catalysts can regulate the chemical reaction rate in the industry according to actual needs. [0003] Nitrogen oxides (NO X ) is a very harmful air pollutant. Atmospheric NO X Almost half of them are produced by man-made pollution sources, mainly from the combustion of fossil fuels such as coal, oil, and natural gas used in production and life, and are e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/08B01J23/30B01J23/34B01J23/89B01J23/22B01D53/86B01D53/56
CPCB01D53/8628B01J23/22B01J23/30B01J23/34B01J23/894B01J37/08
Inventor 裴叶舜
Owner YIXING YIGANG ENVIRONMENTAL PROTECTION ENG & MATERIALS
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