A dry-type denitrification superfine powder that realizes ultra-low emission of flue gas and its manufacturing method and application

A technology of ultra-fine powder and denitrification, which is applied in the field of denitrification, which can solve the problems of easy poisoning and failure of catalysts, high operating costs, and high construction costs, and achieve the effects of enhancing powder fluidity, reducing operating costs, and enhancing adsorption

Active Publication Date: 2021-08-24
张海涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high construction cost, high operating cost after investment conversion, long construction period, complex construction, easy poisoning and failure of catalyst, and difficulty in handling as hazardous waste and extremely high treatment cost in SCR denitrification technology. Problems of low wet denitrification rate and inability to achieve ultra-low emissions

Method used

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  • A dry-type denitrification superfine powder that realizes ultra-low emission of flue gas and its manufacturing method and application
  • A dry-type denitrification superfine powder that realizes ultra-low emission of flue gas and its manufacturing method and application
  • A dry-type denitrification superfine powder that realizes ultra-low emission of flue gas and its manufacturing method and application

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Embodiment 1

[0046] A dry-type denitrification superfine powder that cooperates to achieve ultra-low emission of flue gas in this embodiment has the following components:

[0047]

[0048]

[0049] Iron ore: The iron ore is mixed with hematite, pyrite and siderite in a mass ratio of 5:3:2.

Embodiment 2

[0051] A dry-type denitrification superfine powder that cooperates to achieve ultra-low emission of flue gas in this embodiment has the following components:

[0052]

Embodiment 3

[0054] A dry-type denitrification superfine powder that cooperates to achieve ultra-low emission of flue gas in this embodiment has the following components:

[0055]

[0056] Iron ore; the iron ore is mixed with hematite, pyrite and siderite in a mass ratio of 5:3:2.

[0057] The denitrification superfine powder manufacturing method of above-mentioned embodiment, it is to carry out according to the following steps:

[0058] 1. Weigh the iron ore fragments and grind them into fine powder through primary crushing (European jaw crusher), secondary crushing (hydraulic cone crusher), pre-grinding silo, vibrating feeder and (mechanical crusher) (200 mesh=75 micron), standby;

[0059] Wherein, the iron ore of embodiment 2 and 3 is mixed by hematite, pyrite and siderite, and the mass ratio of hematite fine powder, pyrite fine powder and siderite fine powder is 5 :3:2;

[0060] Two, take calcium hydroxide, sodium bicarbonate, calcium-based granule clay and amino reductant and st...

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Abstract

A dry-type denitrification superfine powder that cooperates to realize ultra-low emission of flue gas and its manufacturing method and application. It relates to the field of denitrification. Waste products are difficult to deal with; SNCR denitrification technology has a low denitrification rate and cannot achieve ultra-low emissions. The invention is compounded by calcium hydroxide, sodium bicarbonate, calcium-based granular clay, micron amino reduction powder, iron ore and the like. The invention is applied to flue gas denitrification of boilers, kilns, power station boilers and biomass boilers. In the present invention, the micron amino reducing agent is mixed with calcium hydroxide and rapidly decomposed and gasified after being heated to generate highly active ammonia gas. NOx gas produces a super oxidation reaction, which oxidizes nitrogen oxides to CO non-selectively 2 、H 2 O and trace mineral salts, it can greatly improve the denitrification rate.

Description

technical field [0001] The invention relates to the field of denitrification, mainly relates to a superfine denitrification powder for dry-type ultra-low emission of flue gas from coal-fired boilers, kilns, power station boilers and biomass boilers, and in particular to a dry-type denitrification ultrafine powder for synergistically realizing ultra-low emission of flue gas And its manufacture method and application. Background technique [0002] Nitrogen oxides (NO X ) The pollution of the environment has become an increasingly serious global problem, and it is one of the main air pollutants. The acid rain and photochemical smog it generates will cause large areas of crops and forests to die. Acid rain will also corrode bridges and buildings and shorten their service life. Photochemical smog has obvious carcinogenic effects. great harm. One of the main sources of nitrogen oxides is the harmful components produced by coal combustion and released into the atmosphere, follow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/83B01D53/56B01D53/06
CPCB01D53/06B01D53/565B01D53/83B01D2257/40B01D2258/0283
Inventor 李锦时关巍张海涛卢丙川
Owner 张海涛
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