Method and device for purifying furnace gas generated by producing phosphoric acid through blast furnace process

A purification device, the technology of French phosphoric acid, applied in the direction of chemical instruments and methods, phosphoric acid, phosphorus oxyacid, etc., can solve the problems of easy-to-paste bag bag filter, subsequent combustion or reuse of furnace gas, explosion, etc.

Active Publication Date: 2010-09-15
BEIJING CLEAN AIR TECH INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high dust concentration, it has a greater impact on the subsequent combustion or reuse of furnace gas
In addition, when electrostatic dust removal is used, it is also prone to explosion problems.
If the bag dust removal method is adopted, due to the sticky and wet characteristics of the furnace gas, it is easy to paste the bag and the bag dust collector cannot be used normally.

Method used

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  • Method and device for purifying furnace gas generated by producing phosphoric acid through blast furnace process
  • Method and device for purifying furnace gas generated by producing phosphoric acid through blast furnace process

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Embodiment Construction

[0029] The method and device for purifying blast furnace phosphoric acid furnace gas according to the present invention will be described below with reference to the accompanying drawings.

[0030] figure 1 It is a schematic diagram of an embodiment of the device for purifying blast furnace phosphoric acid furnace gas according to the present invention. Such as figure 1 As shown, the device includes: an air inlet 1, which is used to supply the furnace gas produced by blast furnace method to the sintered plate dust collector; sintered plate dust collectors 10, 17, which are used to remove dust from the furnace gas; The gas port 15 is used to supply the purified furnace gas to the heat energy recovery device.

[0031] The sintered plate dust collector includes a dust gas chamber (ie dust gas box) 10 and a clean gas room (ie clean gas box) 17, and the dust gas chamber (ie dust gas box) 10 and the clean gas room (ie clean gas box) 17 are respectively set Air inlet 1 and air out...

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Abstract

The invention discloses a method for purifying phosphoric acid furnace gas generated by producing phosphoric acid through a blast furnace process and a purification device using the method. The purification device comprises a gas inlet, a sintering plate dust remover and a gas outlet, wherein the gas inlet and the gas outlet are respectively communicated with the sintering plate dust remover; andthe gas inlet is used for supplying furnace gas generated by producing phosphoric acid through the blast furnace process for the sintering plate dust remover. The sintering plate dust remover takes asintering plate as a filtering element; the sintering plate is made of porous filtering materials with favorable permeability, which is prepared from a high polymer material by adopting a sintering process and is used for carrying out dust removal and purification on the furnace gas. The gas outlet is used for supplying the purified gas furnace for a heat energy recovery device.

Description

technical field [0001] The invention relates to a method and a device for purifying furnace gas produced in blast furnace phosphoric acid production process. Background technique [0002] The blast furnace phosphoric acid production process uses phosphate rock and coke as raw materials. The raw materials are smelted in a blast furnace, preferentially oxidized, and absorbed to directly generate phosphoric acid. After the furnace gas produced in the blast furnace phosphoric acid production process passes through the absorption tower or Venturi absorber, the dust content is less than 1000mg / m 3 , the furnace gas temperature is less than 80°C, and the furnace gas composition contains about 40% carbon monoxide (CO) and a small amount of hydrogen (H 2 ). Furnace gas has the characteristics of high moisture content, fine dust, flammability, and explosion. In order to recover heat energy and protect the environment, it is necessary to dedust, purify and recycle the furnace gas. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/24B01D46/42B01D39/16C10K1/02C01B25/18F27D17/00
CPCY02A50/2351Y02P10/25Y02P20/10
Inventor 张建文
Owner BEIJING CLEAN AIR TECH INNOVATION
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