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Comprehensive treatment method and device for coke oven flue gas pollutants

A technology for comprehensive treatment of pollutants, applied in separation methods, chemical instruments and methods, air quality improvement, etc. the effect of removing

Inactive Publication Date: 2012-12-19
BEIJING SPC ENVIRONMENT PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the characteristics of coke oven flue gas, in SO 2 Concentration 100~250mg / Nm 3 In the interval of flue gas desulfurization, the traditional flue gas desulfurization process loses its economy; in the range of flue gas temperature below 110~170 °C, the traditional flue gas denitrification process loses its effectiveness, and the flue gas must be heated above 300 °C to work normally

Method used

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  • Comprehensive treatment method and device for coke oven flue gas pollutants
  • Comprehensive treatment method and device for coke oven flue gas pollutants
  • Comprehensive treatment method and device for coke oven flue gas pollutants

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Embodiment Construction

[0021] Such as figure 1 , figure 2 As shown, the main equipment of the process of the present invention includes: a carbonization chamber 11 , a combustion chamber 12 , a pollutant adsorption device 13 , a chimney 14 , an analysis and regeneration device 15 , and an adsorbent transfer device 16 .

[0022] The coke oven consists of a carbonization chamber 11 and a combustion chamber 12 arranged at intervals in sequence. The gas burns in the combustion chamber 12 and supplies heat to the carbonization chamber 11 through partition heat transfer. The flue gas produced is exhausted from the combustion chamber 12 .

[0023] The pollutant adsorption device 13 of the present invention is a device that accommodates the adsorbent and satisfies the contact between the flue gas and the adsorbent to complete the adsorption process. Its main structure includes: the flue gas ammonia mixing unit 21, the lower gas distribution facility 22, and the adsorbent cloth Facility 24, adsorbent rece...

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Abstract

The invention relates to a comprehensive treatment method and device for removing SOx, NOx and other pollutants from coke oven flue gas. Harmful substances such as SOx and / or NOx, HCl, HF, mercury and the like in flue gas are removed basically. The method comprises the following steps of: fully mixing combustion flue gas with NH3, and making the mixed gas flow through a pollutant adsorption device provided with an adsorbent material layer from bottom to top; adsorbing SOx and / or NOx, HCl, HF and mercury in the flue gas into a porous system of an adsorbent, and exhausting clean flue gas from the upper part of the adsorption device; and replenishing a fresh adsorbent into the adsorption device from the top of the adsorption device, exhausting the adsorption-saturated adsorbent out of the adsorption device from the bottom of the adsorption device, resolving and regenerating the saturated adsorbent, and returning into the adsorption device for recycling.

Description

technical field [0001] The invention relates to the field of coke oven flue gas pollutant treatment, more specifically, relates to a method for removing SO from coke oven flue gas x 、No x and other pollutants of the economical and effective process methods and devices. Background technique [0002] Coke oven flue gas contains SO 2 , SO 3 , NO x , mercury and other heavy metals pollute the atmosphere and have not been effectively treated so far. [0003] The traditional flue gas desulfurization and denitrification process is developed for boiler flue gas. The economical and effective working range is 100~150°C (300~400°C for denitrification), SO 2 Concentration 1000~4000mg / Nm 3 range. According to the characteristics of coke oven flue gas, in SO 2 Concentration 100~250mg / Nm 3 In the range where the flue gas temperature is below 110-170°C, the traditional flue gas denitrification process loses its effectiveness, and the flue gas must be heated above 300°C to work norm...

Claims

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Application Information

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IPC IPC(8): B01D53/76B01D53/60B01D53/04
CPCY02A50/20
Inventor 张开元贾双燕谢飞
Owner BEIJING SPC ENVIRONMENT PROTECTION TECH
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