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.
CN101829461AActive Publication Date: 2010-09-15BEIJING CLEAN AIR TECH INNOVATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING CLEAN AIR TECH INNOVATION
Publication Date
2010-09-15

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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.
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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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