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Pulverizing process method and pulverizing system for desulfurized limestone

A process method and technology of a milling system, applied in cleaning methods and appliances, chemical instruments and methods, grain processing, etc., can solve the problem that limestone powder cannot reach ultra-low emissions, increase limestone consumption, reduce energy consumption, The effect of avoiding dust pollution

Active Publication Date: 2021-12-03
湖南华杰机械设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a desulfurized limestone powder making process, aiming to solve the problem that limestone powder cannot meet the requirements of ultra-low emissions

Method used

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  • Pulverizing process method and pulverizing system for desulfurized limestone
  • Pulverizing process method and pulverizing system for desulfurized limestone
  • Pulverizing process method and pulverizing system for desulfurized limestone

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Embodiment 1

[0038] Please refer to figure 1 , a kind of pulverizing process method of desulfurized limestone, described process method comprises the following steps:

[0039] The crusher 2 crushes the limestone raw material, and the particle size after crushing is required to be 20mm-45mm;

[0040] The vertical rotary mortar mill 4 grinds the crushed limestone particles; the limestone particles are ground to the design particle size requirements. Different customers have different design particle size requirements. Therefore, for different design particle size requirements, vertical rotary mortars are required. Mill 4 is adjusted so that the limestone powder after powdering can reach the design particle size requirement;

[0041] The V-type powder separator 5 screens the ground limestone powder, and screens out large-grained limestone powders larger than the design particle size requirements and small-grained limestone powders smaller than or equal to the design particle size requirement...

Embodiment 2

[0056] Please refer to figure 1 , a pulverizing system for desulfurized limestone, the pulverizing system includes a vibrating feeder 1, a crusher 2, a raw material bin 3, a vertical rotary mortar mill 4, a V-shaped pulverizer 5, a cyclone collector 6, a special selection Powder machine 7, coarse powder finished product warehouse 8, fine powder finished product warehouse 9 and dust collector 10;

[0057] The discharge end of the vibrating feeder 1 is located directly above the feed end of the crusher 2; a first hoist is provided between the discharge end of the crusher 2 and the feed end of the raw material bin 3 11; a weighing belt conveyor 12 is provided between the discharge end of the raw material bin 3 and the feed end of the vertical rotary mortar mill 4; the discharge end of the vertical rotary mortar mill 4 is connected to the V A second hoist 13 is provided between the feed end of the V-type powder separator 5; a return material is provided between the discharge end ...

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Abstract

The invention discloses a pulverizing process method for desulfurized limestone, which comprises the following steps: crushing a limestone raw material by a crusher; grinding crushed limestone particles by using a vertical rotary mortar mill; screening the ground limestone powder by using a V-shaped powder concentrator; guiding the large-particle limestone powder into the vertical rotary mortar mill again, and guiding the small-particle limestone powder into a special powder concentrator; guiding the fine powder smaller than 250 meshes into a fine powder finished product bin through the special powder concentrator, and guiding the rest fine powder into a coarse powder finished product bin; and collecting fine powder in the crusher and the vertical rotary mortar mill into a dust collector through a dust collection main pipe and dust collection branch pipes by a fan. The fine powder smaller than 250 meshes is sorted out through the special powder concentrator and used for wet flue gas desulfurization after a boiler, the ground limestone powder is fully utilized, in-boiler dry desulfurization and tail secondary desulfurization of a CFB boiler are combined, and resources are saved while ultra-low emission of flue gas is achieved.

Description

technical field [0001] The invention relates to the technical field of desulfurization to meet ultra-clean emission requirements, and in particular to a desulfurized limestone pulverization process method and a pulverization system. Background technique [0002] As the call for "ultra-low emissions" of pollutants from coal-fired power plants has intensified, people are paying more and more attention to technologies to achieve "ultra-low emissions". Sulfur dioxide (SO 2 ) as a large amount of wide-ranging air pollutants, it has great harm to the human body, animals and plants, buildings, sulfur dioxide (SO 2 ) forms acid rain after oxidizing and absorbing water, which can acidify the soil and lakes, leading to the destruction of the ecological environment. At present, to achieve this effect, simply following the desulfurization method in the furnace cannot meet the new emission standards for sulfur content, and all Adopting post-furnace flue gas desulfurization will increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C15/06B02C21/00B02C23/02B02C23/08B02C23/12B08B15/04
CPCB02C15/06B02C21/00B02C23/02B02C23/08B02C23/12B08B15/04Y02P40/40
Inventor 李果丁志平王大臣彭继承
Owner 湖南华杰机械设备有限公司
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