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Turbulent jet coupling integrated flue gas purification device for complicated refractory flue gas

A flue gas purification and difficult-to-treat technology, which is used in combination devices, gas treatment, chemical instruments and methods, etc., can solve problems such as difficulties, and achieve the effects of saving equipment investment, high efficiency, and land occupation.

Pending Publication Date: 2018-04-06
双盾环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Cleaning, purification and dust removal of flue gas emitted by various kilns, target components (such as common SO 2 , HF, HCl, NOx, H 2 The removal and recovery of S gas, etc.) has always been an important process unit of flue gas cleaning treatment, and there are many methods: such as empty tower washing and purification, packed tower washing and purification, sieve plate tower washing and purification, turbulent ball tower washing and purification, dynamic wave washing and purification , Venturi tube washing and purification, etc., but for the complex and high-concentration dust-containing particles that are difficult to deal with, the combination of multiple methods is required, and the one-step method of thorough purification has always been difficult

Method used

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  • Turbulent jet coupling integrated flue gas purification device for complicated refractory flue gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A Kaldor furnace processes 5,000 tons of precious metal anode slime per year, and the flue gas volume is 7,000-10,000m 3 / h, the flue gas contains 15g / m of powder such as lead oxide, selenium oxide, and Glauber's salt 3 ~40g / m 3 , the flue gas inlet temperature is 300-600°C, the SO in the flue gas 2 Content 31500mg / Nm 3 And a small amount of HF, HCl, NOx, H 2 Se, etc. need to be purified and absorbed. The annular overflow weir 2 is equipped with a water curtain to protect the inner wall of the smoke pipe. The high-temperature flue gas enters the turbulent washing section 3 through the annular overflow weir 2, where it is sprayed with the washing and absorbing liquid sent by the circulating pump 12 through the large-opening turbulent nozzle 4. The flue gas and the washing and absorbing liquid form a suspended dynamic foam area, where the gas-liquid two-phase contact is intense to complete the adsorption absorption and adiabatic evaporation process, and the gas-liquid...

Embodiment 2

[0031] A pyrite acid plant with an annual output of 400,000 tons has a flue gas volume of 115,000m from the boiler and multi-tube dust collector 3 / h, containing iron oxide, silicon oxide, calcium oxide, aluminum oxide, magnesium oxide and other dust 15g / m 3 ~20g / m 3 , the flue gas inlet temperature is 300-360°C, the flue gas SO 2 The content is 11%, and the flue gas contains a small amount of HF, HCl, SO 3 It needs to be purified and absorbed. The annular overflow weir 2 is equipped with a water curtain to protect the inner wall of the smoke pipe. The high-temperature flue gas enters the turbulent washing section 3 through the annular overflow weir 2, where it is sprayed with the washing and absorbing liquid sent by the circulating pump 12 through the large-opening turbulent nozzle 4. The flue gas and the washing and absorbing liquid form a suspended dynamic foam area, where the gas-liquid two-phase contact is intense to complete the adsorption absorption and adiabatic ev...

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Abstract

The invention discloses a turbulent jet coupling integrated flue gas purification device for complicated refractory flue gas. The flue gas purification device comprises a turbulent jet scrubber (1), and is characterized in that the vertically arranged turbulent jet scrubber (1) is formed by integrally coupling a turbulent scrubbing section (3) on the upper part and a scaling jet section (5) on thelower part; the top of the turbulent scrubbing section (3) is communicated with a conveying flue of to-be-treated flue gas, and a turbulent nozzle (4) is arranged on the middle lower part of an innercavity of the turbulent scrubbing section (3); an inner cavity of the scaling jet section (5) is necked down, and the bottom of the scaling jet section (5) is communicated with the middle of a gas-liquid separator (6); and a bottom liquid storage area of the gas-liquid separator (6) is connected with a liquid inlet of the turbulent nozzle (4) by virtue of a circulating pipe (13) with a circulating pump (12). According to the device disclosed by the invention, the energy can be saved by 30% or higher, the equipment investment is saved by 35% or higher, the occupied space is saved by 40% or higher, and the de-dusting and scrubbing efficiency is improved by 5-20% or higher.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment, in particular to the purification, washing, absorption and environmental protection treatment of various types of fuel, smelting and heating kiln flue gas, specifically a method for removing particles or heavy metals in flue gas, removing A turbulent jet coupling integrated flue gas purification device for complex and refractory flue gas that can exert better effects on the removal of target components in flue gas, especially fine particles with complex physical properties. Background technique [0002] Cleaning, purification and dust removal of flue gas emitted by various kilns, target components (such as common SO 2 , HF, HCl, NOx, H 2 The removal and recovery of S gas, etc.) has always been an important process unit of flue gas cleaning treatment, and there are many methods: such as empty tower washing and purification, packed tower washing and purification, sieve plate tower washi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/06B01D50/00
CPCB01D47/06B01D47/063B01D50/00B01D2258/0283
Inventor 宋小良徐光泽
Owner 双盾环境科技有限公司
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