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Lime digestion and dust removal device

A technology of dust removal device and quicklime, which is applied in combination devices, chemical instruments and methods, separation methods, etc., can solve the problems of poor digestion effect, dust and smoke pollution, low digestion efficiency of digesters, etc.

Active Publication Date: 2018-09-28
ZHONGYE-CHANGTIAN INT ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a high-efficiency quicklime digester to solve the problems of low digestion efficiency and poor digestion effect of the digester, as well as a large amount of dust and smoke pollution.

Method used

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  • Lime digestion and dust removal device
  • Lime digestion and dust removal device
  • Lime digestion and dust removal device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0180] In this embodiment, a digestion and dedusting plant comprising a three-stage quicklime digester 1 and a deduster Q1 is used, wherein each rotation axis of the second stage rotates in the same direction as the corresponding rotation axis directly above, and the third stage Each axis of rotation of a stage rotates in the same direction as the corresponding axis of rotation of the second stage directly above. The theoretical amount of water required for quicklime digestion is 32 wt% of the quicklime weight. In this embodiment, the rate of water spraying ensures that the amount of water sprayed accounts for 70wt% of the weight of quicklime.

[0181] Quicklime digestion and dedusting method, the method comprises the following steps:

[0182] 1) Quicklime digestion: Put quicklime into the feed port 2 of the three-stage quicklime digester 1, and then transport it to the first digestion section box 4 through the sealed delivery section box 3, and pass through the first digesti...

Embodiment 2

[0188] Example 1 is repeated, using a digestion and dedusting plant comprising a two-stage quicklime digester 1, except that each axis of rotation of the second stage rotates in the opposite direction to the corresponding axis of rotation directly above, while each axis of rotation of the third stage The shaft rotates in the opposite direction to the corresponding secondary rotation shaft directly above.

[0189] After 10 days of continuous operation, no blockage occurred at the discharge port.

[0190] The dust removal effect of dust collector Q1 is higher than 99.7%.

[0191] During normal operation, samples are taken from the outlet 9 at the bottom of the quicklime digester 1 at the same 20 second intervals for analysis.

Embodiment 3

[0195] A high-efficiency quicklime digestion and dust removal system, which includes a digester 1, a water bath dust collector Q1, and also includes an exhaust device A1, a chimney A2, a dust removal sewage treatment device A3, a sludge treatment device A4, a cleaning device A5, and a slaked lime delivery device A6 and The mixer A7 and the water bath dust collector Q1 are connected to the dust collection external interface 601 of the digester 1 through a dust removal pipe Q4; The conveying device A6 is connected, the clean air outlet Q303 of the water bath dust collector Q1 is connected with the chimney A2 through the exhaust device A1, the overflow pipe Q502 of the water bath dust collector Q1 is connected with the dust removal sewage treatment device A3, and the sewage sludge discharge device at the bottom of the dust removal pool Q2 Q203 is connected to the sludge treatment device A4, the dust removal sewage treatment device A3 is connected to the cleaning device A5, and opt...

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Abstract

Three-stage quicklime digester, which includes: feed inlet, sealed conveying section box, first digestion section box, water spray device; sealed dust removal hood, upper digestion box feeding place and stabbing opening, second digestion section The box body, the second digestion box body feeding place and the material opening, the third digestion section box body, and the discharge port; wherein: a pair of first stirring shafts with stirring blades are installed in the first digestion section box body, which A pair of first agitating shafts are driven by the first driving device and their rotation directions are opposite; a pair of second agitating shafts with agitating blades is installed in the second digestion section box, and the pair of second agitating shafts The two stirring shafts are driven by the second driving device and the rotation directions of the two are opposite; a pair of third stirring shafts with stirring blades are installed in the third digestion section box, and the pair of third stirring shafts pass through Driven by the third driving device and the rotation directions of the two are opposite; and, the sealed dust removal cover has a dust collection outer interface.

Description

technical field [0001] The invention relates to the field of quicklime digestion in iron and steel sintering plants, in particular to a high-efficiency quicklime digestion and dust removal system. It mainly solves the problem of environmental pollution caused by quicklime digestion and dust removal. Background technique [0002] With the development of modern industry and the improvement of people's quality of life, the requirements for environmental protection are getting higher and higher. Safe production and clean production have become the symbol of modern enterprise civilization. [0003] In the iron and steel metallurgical industry, it is generally necessary to sinter iron ore before entering the blast furnace for ironmaking, and quicklime plays an important role in the sintering process. First, it improves the granulation effect of the mixed material and improves the air permeability of the material layer. Compared with before digestion, the particle size of the mixt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B2/08B01D50/00
CPCC04B2/08B01D50/60
Inventor 周志安李文林李康苏道景涛吴奇
Owner ZHONGYE-CHANGTIAN INT ENG CO LTD
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