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Phosphorous ore, lime double circulation desulphurization and dust-removing process, and equipment therefor

A desulfurization and dust removal, double cycle technology, applied in the direction of dispersed particle separation, chemical instruments and methods, and the use of liquid separation agents, can solve the problems of weak alkalinity, high pressure drop, low desulfurization efficiency of a single tower, etc., to reduce operating costs , to ensure the effect of efficiency

Inactive Publication Date: 2007-01-31
HUNAN UNIV
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Problems solved by technology

[0005] Phosphate rock is used as desulfurizer, and the slag after desulfurization can be directly added with concentrated sulfuric acid to make common calcium (phosphate fertilizer) and sold directly on the spot. 2 content of about 17%), weak alkalinity, and low desulfurization efficiency of a single tower; research in 1987 shows that to achieve a certain desulfurization efficiency, three towers need to be used in series, which causes the pressure drop of the system to reach as high as 13000Pa to 15000Pa

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  • Phosphorous ore, lime double circulation desulphurization and dust-removing process, and equipment therefor
  • Phosphorous ore, lime double circulation desulphurization and dust-removing process, and equipment therefor
  • Phosphorous ore, lime double circulation desulphurization and dust-removing process, and equipment therefor

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Such as figure 1 As shown, the phosphate rock and lime double-cycle desulfurization and dust removal process of the present invention uses the jet bubbling desulfurization and dust removal tower as the desulfurization and dust removal equipment, and the lower part of the tower is the first-stage circulation, and the phosphorus rock is used as the desulfurizer; the upper part of the tower is the second-stage circulation, using Lime is used as desulfurizer, and the pressure drop of the whole system is controlled at 3000Pa~3800Pa. The specific steps are: ①The hot flue gas is introduced into the jet bubbling desulfurization and dust removal tower and then rotates in the circular gas channel 4, and contacts with the absorbent sprayed from the ring top to complete the first gas-liquid absorption reaction; The bubble absorption secti...

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Abstract

A dual-circulation desulfurizing-dusting technology for fume includes the first-stage circulation consisting of the first gas-liquid absorption reaction between fume and the first absorbent (phosphorus ore solution) in fume channel and the second gas-liquid absorption reaction between fume and the first absorbent in bubbling-sucking segment, and the second-stage circulation consisting of the third gas-liquid absorption reaction between fume and the second absorbent (lime stone solution) in internal cylinder and on floating valve plate, and the fourth gas-liquid absorption reaction between fume and the second absorbent prayed down from internal cylinder.

Description

technical field [0001] The invention mainly relates to the field of flue gas desulfurization and dust removal, in particular to a phosphate rock and lime double-cycle desulfurization and dust removal process and a device thereof. Background technique [0002] In the existing technology, there are many desulfurization and dust removal processes at home and abroad, including limestone / gypsum method, wet ammonia method, double alkali method, magnesium method, ammonium phosphate fertilizer method, phosphate rock method, CT-121 jet bubbling method, etc. [0003] At present, although the limestone / gypsum method is the most widely used in the world, the technology is the most mature, and the operating cost is relatively low. Better utilization and discarded treatment, so can not produce economic benefits, while causing serious secondary pollution. [0004] It was appraised as "a future-oriented desulfurization process" by the American energy magazine - CT-121 jet bubbling method i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/79B01D53/50B01D47/00
Inventor 孟蕾甘海明赵欣杨春平路培甘霖郝青陈宏
Owner HUNAN UNIV