Lime slaking tank capable of removing deposition at tank bottom without shutdown and working method of lime slaking tank

A technology for digestion tanks and tank bottoms, applied in cleaning methods and appliances, chemical instruments and methods, separation methods, etc., can solve problems such as blockage of emptying ports, easy deposition of impurities at the bottom of tanks, and the need to shut down for processing

Pending Publication Date: 2021-10-01
鞍钢实业集团(鞍山)设备运维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a lime digestion tank and its working method that can remove the deposits at the bottom of the tank without stopping the machine. The bottom of the traditional lime digestion tank is easy to deposit impurities, which will cause blockage of the emptying port, impurity at the bottom of the tank cannot be emptied in time during production, and need to be shut down for processing, so as to improve the working efficiency of the digestion tank

Method used

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  • Lime slaking tank capable of removing deposition at tank bottom without shutdown and working method of lime slaking tank
  • Lime slaking tank capable of removing deposition at tank bottom without shutdown and working method of lime slaking tank

Examples

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Effect test

Embodiment 1

[0028] A lime digestion tank capable of removing deposits at the bottom of the tank without stopping the machine, comprising a digestion tank body 1 and an agitator 5, a ring pipe 7 is arranged at the lower part of the digestion tank body 1, and several Nozzles 6, several nozzles 6 are sprayed in a tangential direction, the liquid sprayed by several nozzles 6 forms a swirling flow at the bottom of the digestion tank, the ring pipe 7 is connected to a circulating slurry pump 9, and the circulating slurry pump 9 passes through The pipeline is connected to the upper part of the tank body 1 of the digestion tank.

[0029] When the raw lime digestion tank is working, because the lime raw material contains a certain proportion of mud and sand, the mass is large, resulting in a large amount of sediment at the bottom of the tank, resulting in blockage of the emptying pipe. The effective volume gradually becomes smaller and needs to be shut down for processing. After the slurry circul...

Embodiment 2

[0031] A lime digestion tank capable of removing deposits at the bottom of the tank without stopping the machine, comprising a digestion tank body 1 and an agitator 5, a ring pipe 7 is arranged at the lower part of the digestion tank body 1, and several Nozzles 6, several nozzles 6 are sprayed in a tangential direction, the liquid sprayed by several nozzles 6 forms a swirling flow at the bottom of the digestion tank, the ring pipe 7 is connected to a circulating slurry pump 9, and the circulating slurry pump 9 passes through The pipeline is connected to the upper part of the tank body 1 of the digestion tank. The bottom of the digestion tank body 1 is conical, the conical bottom is an emptying port, and the emptying port is connected to an emptying pipe 12 .

[0032] Since the bottom of the digester tank body 1 has been changed to a pile-shaped tank bottom 10, after the swirl flow is formed, after the mud and sand are agitated by the swirl flow, the heavier impurities will swi...

Embodiment 3

[0034] A lime digestion tank capable of removing deposits at the bottom of the tank without stopping the machine, comprising a digestion tank body 1 and an agitator 5, a ring pipe 7 is arranged at the lower part of the digestion tank body 1, and several Nozzles 6, several nozzles 6 are sprayed in a tangential direction, the liquid sprayed by several nozzles 6 forms a swirling flow at the bottom of the digestion tank, the ring pipe 7 is connected to a circulating slurry pump 9, and the circulating slurry pump 9 passes through The pipeline is connected to the upper part of the tank body 1 of the digestion tank. A backwashing device 11 is also included, and the backwashing device 11 is connected to an emptying pipe 12 at the bottom of the digestion tank body 1 .

[0035] Large pieces of material in the mud and sand can easily cause blockage of the emptying pipe 12. A backwashing device 11 is installed on the upper part of the emptying pipe 12. Through the backwashing device 11, t...

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Abstract

The invention relates to a lime slaking tank capable of removing tank bottom deposits without shutdown and a working method thereof. The lime slaking tank comprises a slaking tank body and a stirrer; the lower part of the slaking tank body is provided with a ring pipe, the ring pipe is provided with a plurality of nozzles, the plurality of nozzles spray in a tangential direction, liquid sprayed by the plurality of nozzles forms a rotational flow at the bottom of the slaking tank, the annular pipe is connected with a circulating slurry pump which is connected with the upper part of the digestion tank body through a pipeline. The invention has the following beneficial effects: 1) the problem of deposition of impurities at the tank bottom is effectively solved through the tank bottom rotational flow formed by the circulating slurry pump and the nozzle; 2) the problem that impurities are deposited on the periphery of the tank bottom is effectively solved by the conical tank bottom; 3) the backwashing device fully solves the problem of blockage of the emptying pipe caused by impurities.

Description

technical field [0001] The invention relates to the technical field of sintering flue gas desulfurization treatment, in particular to a lime digestion tank capable of removing deposits at the bottom of the tank without stopping the machine and a working method thereof. Background technique [0002] The lime digestion tank involved in this technology is used in the slurry preparation system of the SDA semi-dry desulfurization and dust removal device of the sintering machine. Slaked lime (Ca(OH) 2 ), which is prepared by the digestion reaction of quicklime (CaO) and water in a lime digester. The volume of the digestion tank is about 10m 3 (Ф2×3.3mm), separated by a partition plate in the middle, equipped with 2 slurry mixers, quicklime (powder, quantitatively input by weighing screw) inlet pipe and water inlet pipe (controlled by pneumatic regulating valve) on the top, and the lower part An emptying pipe is provided, and an overflow slurry pipe is provided on the upper side...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/08B01D53/80B01D53/48B01J19/18B08B9/032B08B9/093B08B13/00
CPCC04B2/08B01D53/80B01D53/48B01J19/18B08B9/032B08B9/093B08B13/00B01D2251/404B01D2251/604
Inventor 贾一波王永刘冰邓泽友王晖
Owner 鞍钢实业集团(鞍山)设备运维有限公司
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