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Dry powder pneumatic-conveying and direct-feeding desulphurization system

A technology of pneumatic conveying and desulfurization system, which is applied in the directions of dispersed particle separation, chemical instrument and method, separation method, etc., can solve the problems of complex structure and high system cost of wet desulfurization system, and achieves low manufacturing cost, simple system control, and high structure. Simplified effect

Inactive Publication Date: 2012-10-10
CPI YUANDA ENVIRONMENTAL PROTECTION ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The wet desulfurization effect is the best, but the structure of the wet desulfurization system is complex and the system cost is high. Therefore, how to simplify the system structure and reduce its production cost is a topic worth studying

Method used

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  • Dry powder pneumatic-conveying and direct-feeding desulphurization system

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0013] As shown in the figure, the pneumatic conveying dry powder direct feeding desulfurization system in this embodiment includes a desulfurization absorption tower 1 and a pneumatic conveying dry powder direct feeding system. The pneumatic conveying dry powder direct feeding system includes a silo 2, and the air outlet is arranged at the bottom of the silo The first fluidizing air system 3 blowing into the silo, the intermediate silo 4 located below the silo 2, the first drop pipe 5 connecting the silo 2 and the intermediate silo 4, and the air exhaust port are set at the bottom of the intermediate silo to the intermediate silo. The second fluidizing air system 6 for internal blowing, the second drop pipe 7 arranged at the bottom of the intermediate bin 4, the slide valve 8 and the rotary feed valve 9 arranged on the second drop pipe from top to botto...

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Abstract

The invention discloses a dry powder pneumatic-conveying and direct-feeding desulphurization system. The desulphurization system comprises a desulphurization absorption tower and a dry powder pneumatic-conveying and direct-feeding system, wherein the dry powder pneumatic-conveying and direct-feeding system comprises a storage bin, a first fluidized air system, a middle bin, a first discharge pipe, a second fluidized air system, a second discharge pipe, a gate valve, a rotary feed valve and an injector; the storage bin is connected with the middle bin through the first discharge pipe; the gate valve and the rotary feed valve are arranged on the second discharge pipe in sequence from the top down; and the discharge opening of the injector is connected with the slurry tank at the lower part of the desulphurization absorption tower through a conveying pipe. According to the dry powder pneumatic-conveying and direct-feeding desulphurization system, powder is directly conveyed by the dry powder pneumatic-conveying and direct-feeding system into the slurry tank of the desulphurization absorption tower, and an absorbent slurry tank, an absorbent slurry tank stirrer, an absorbent slurry conveying pump and the like in the traditional wet desulphurization system are omitted, so that the structure of the desulphurization system is greatly simplified, the system manufacturing cost is low, and the system control is simpler.

Description

technical field [0001] The invention relates to a flue gas purification system, in particular to a desulfurization system that adopts pneumatic conveying of dry powder to directly feed. Background technique [0002] Coal-fired power generation is one of the main ways of coal utilization. Coal-fired thermal power units need to emit a large amount of pollutants, among which SO 2 And dust is more serious harm to the environment, and it is also the main pollutant that needs to be controlled. Therefore, it is necessary to install a desulfurization system at the flue gas discharge of coal-fired power generation. Flue gas desulfurization technologies include wet desulfurization and dry desulfurization, among which wet desulfurization technology is the most widely used. The principle of the wet flue gas desulfurization absorption tower is to use limestone alkaline slurry to spray from top to bottom, the flue gas flows from bottom to top, and the limestone slurry droplets absorb SO...

Claims

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Application Information

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IPC IPC(8): B01D53/80B01D53/50
Inventor 杨斌懿唐小健刘宇朱玉毛霖丁晋袁亮张羲和吴涛陈四宝
Owner CPI YUANDA ENVIRONMENTAL PROTECTION ENG
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