A high-efficiency quicklime digestion and dust removal system

A quicklime and digester technology, which is applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve problems such as poor digestion effect, dust and smoke pollution, and low digestion efficiency of digesters.

Active Publication Date: 2018-10-19
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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  • A high-efficiency quicklime digestion and dust removal system
  • A high-efficiency quicklime digestion and dust removal system
  • A high-efficiency quicklime digestion and dust removal system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0170] In this embodiment, a digestion and dust removal device including a two-stage quicklime digester 1 and a dust remover Q1 is used, wherein each rotation axis of the second stage has the same rotation direction as the corresponding rotation axis directly above. The theoretical amount of water required for quicklime digestion is 32wt% of the weight of quicklime. In this embodiment, the rate of spraying water ensures that the amount of sprayed water accounts for 70% by weight of the quicklime weight.

[0171] Quicklime digestion and dust removal method, the method includes the following steps:

[0172] 1) Quicklime digestion: Put the quicklime into the feed port 2 of the two-stage quicklime digester 1, and transport it to the first digestion section box 4 through the sealed conveying section box 3, and pass through the first digestion section box 4 The water spray device 5 on the upper or side of the first digestion section box 4 sprays water to the quicklime material moving in...

Embodiment 2

[0178] Repeat Example 1, using a digestion and dust removal device including a two-stage quicklime digester 1 except that each rotation axis of the second stage rotates in the opposite direction to the corresponding rotation axis directly above.

[0179] After 10 days of continuous operation, there was no blockage of the discharge port.

[0180] The dust removal effect of the dust collector Q1 is higher than 99.6%.

[0181] During normal operation, samples are taken from the outlet 9 at the bottom of the quicklime digester 1 at the same time interval of 20 seconds for analysis.

Embodiment 3

[0185] A high-efficiency quicklime digestion and dust removal system, which includes a digester 1, a water bath dust collector Q1, 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 conveying device A6 and Mixer A7, water bath dust collector Q1 is connected with the dust collection port 601 of digester 1 through a dust removal pipe Q4; slaked lime conveying device A6 is located at the outlet 9 of digester (1), and mixer A7 is connected with slaked lime Conveying device A6 is connected, the clean air outlet Q303 of the water bath dust collector Q1 is connected to the chimney A2 through the exhaust device A1, the overflow pipe Q502 of the water bath dust collector Q1 is connected to 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, and the dust removal sewag...

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Abstract

The invention relates to a two-stage quicklime slaker, which comprises: a feed inlet, a sealed conveying section box, a first slaking section box, a water sprayer, a sealed dust hood, an upper slaking box blanking part and a poke port, a second slaking section box, and a discharge port. Specifically, the first slaking section box is internally equipped with a pair of first stirring shafts with stirring blades, the pair of first stirring shafts are driven by a first driving device and have opposite rotation directions. In addition, the second slaking section box is internally equipped with a pair of second stirring shafts with stirring blades, the pair of second stirring shafts are driven by a second driving device and have opposite rotation directions. And the sealed dust hood has a dust collection external port.

Description

Technical field [0001] The invention relates to the field of quicklime digestion in iron and steel sintering plants, in particular to an efficient quicklime digestion and dust removal system. Mainly to solve the problem of environmental pollution caused by the digestion and dust removal of quicklime. 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 signs of modern corporate civilization. [0003] In the iron and steel metallurgy industry, it is generally necessary to sinter iron ore before entering the blast furnace for ironmaking. Quicklime plays a more important role in the sintering process. First, improve the granulation effect of the mixture and improve the air permeability of the material layer. Compared with before digestion, the mixture> The 3mm particle size is increased b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B2/08B01D47/02
CPCB01D47/021B01D2247/04C04B2/08
Inventor 周志安李文林苏道李康代友训夏春才
Owner ZHONGYE-CHANGTIAN INT ENG CO LTD
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