Phosphoric acid tail gas electric demister

A technology of electrostatic defogging and exhaust gas, applied in the field of phosphorus chemical technology and environmental protection, can solve pollution and other problems, achieve the effect of solving environmental pollution, compact arrangement structure, and increasing area

Inactive Publication Date: 2010-08-25
广西钦州桂金诺实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems existing in the prior art for treating phosphoric acid tail gas, aiming to provide an economical and practical phosphoric acid tail gas

Method used

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  • Phosphoric acid tail gas electric demister
  • Phosphoric acid tail gas electric demister

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Embodiment

[0023] Phosphoric acid tail gas electric defogging and purification equipment, the high-voltage constant current DC power supply lead insulation box 1 is fixed on the top cover 3, and is connected with the corona electrode device 7; the non-lead insulation box 2 is fixedly connected on the top cover 3; the top cover 3 It is connected with the shell 5 by the flange 4; the first flower plate 8 and the second flower plate 11 are respectively welded with the anode electrostatic precipitation tube 10 and the shell 5; the gas distribution plate 13 is located between the manhole 12 of the gas distribution chamber and the manhole 14 of the air intake chamber The room is welded with the shell 4; the inclined bottom plate 15 is located at the bottom of the shell 5 and welded with the shell 5; the flushing device 20 is fixed on the top cover 3; the water outlet 9 and the water inlet 18 are respectively located at the bottom of the first flower plate 8 and the second flower plate 11 The up...

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Abstract

The invention discloses a phosphoric acid tail gas electric demister which adopts a constant current high-voltage DC power 30-70 kV to produce a high-voltage electrostatic field. An anode static electricity sediment tube adopts a honeycombed, triangle or square structure so as to ensure that the arrangement structure of equipment is compact, the area of the electrostatic field is enlarged, and the phosphoric acid tail gas handling capacity is improved; a high-voltage electrostatic field is provided with a cooling system; phosphoric acid tail gas enters the anode static electricity sediment tube from a distribution chamber to be further cooled to reduce the flow velocity of the phosphoric acid tail gas, enhance ionization effect and improve phosphoric acid deposition rate, thereby purifying the phosphoric acid tail gas. After the phosphoric acid tail gas is electrically demisted and purified, the phosphoric acid tail gas which contains a small quantity of steam is discharged, and no smoke exists visually. The content of phosphoric acid in the phosphoric acid tail gas is lowered to be less than or equal to 1 PPM from the content which is more than or equal to 50 PPM after the phosphoric acid tail gas is electrically demisted, and the phosphoric acid yield is improved by above 0.5%.The invention solves the problem of environment pollution caused by phosphoric acid production, effectively protects factories and peripheral environment and improves economic and social benefits.

Description

Technical field: [0001] The invention belongs to the field of phosphorus chemical technology and environmental protection technology, and relates to an electric demisting device for phosphoric acid tail gas. technical background: [0002] The tail gas in phosphoric acid production contains impurity gases such as phosphorus pentoxide, phosphorus trioxide and elemental phosphorus. The discharge of such tail gas will cause serious air pollution. The existing tail gas treatment method is generally water washing method, Li Yun, Zhou Junhong in "The analysis and countermeasures of excessive phosphorus pentoxide emission in the tail gas of thermal phosphoric acid production", sulfur phosphorus design and powder engineering, 2006 No. 5, mentioned in When the content of phosphorus pentoxide in the tail gas discharged from the production of thermal phosphoric acid is seriously exceeded, two countermeasures are put forward: the first is to transform the production process equipment and...

Claims

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Application Information

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IPC IPC(8): B03C3/06B03C3/49B03C3/78
Inventor 林军吴小海韦仕能
Owner 广西钦州桂金诺实业有限公司
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