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A filter device that removes nitrous oxides and dioxins from discharge gas and filtrating method thereof

A filter equipment and nitrogen oxide technology, applied in chemical instruments and methods, nitrous oxide capture, separation methods, etc., can solve the problems of adsorbent damage, construction cost increase, corrosion, etc., to prevent oxidation/corrosion, guarantee Retention time, effect of improving filtration efficiency

Inactive Publication Date: 2012-10-17
DAEWOO ENG & CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, in the above-mentioned filtration equipment and method for nitrogen oxides and dioxins using the adsorption concept, the injected adsorbent will be destroyed after absorbing a certain amount of nitrogen oxides, so in practical applications, the maintenance / Maintenance is problematic and it is difficult to achieve high efficiency
[0013] In addition, in the above-mentioned filter equipment and method for nitrogen oxides and dioxins utilizing the concept of adsorption, for the additional process, it is necessary to set up additional equipment, such as an ozone injection device, etc., which not only increases the construction cost, but also due to the injection of the oxidant, Oxidation / corrosion issues with equipment in other processes

Method used

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  • A filter device that removes nitrous oxides and dioxins from discharge gas and filtrating method thereof
  • A filter device that removes nitrous oxides and dioxins from discharge gas and filtrating method thereof
  • A filter device that removes nitrous oxides and dioxins from discharge gas and filtrating method thereof

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experiment example

[0068] The purpose of this experimental example is to compare the NO filtration efficiencies when using the existing powder impregnated activated carbon (AC) and the catalyst of the present invention respectively.

[0069] The flow rate of this experimental example is 7780ml / min, the linear velocity is 0.8m / min, the temperature is 160°C, the amount of activated carbon added is 5g, and the residence time is 0.5s.

[0070] Figure 7 is to use the catalyst of the present invention respectively (V 2 o 5 / TiO 2 Department, MnO x System) and the comparison chart of NO filtration efficiency when the existing powder impregnated activated carbon. With the increase of catalyst injection amount, the NO filtration efficiency of each catalyst increased, however, the addition of MnO x When the catalyst is used, the maximum filtration efficiency reaches 64.39%, compared with TiO 2 The catalyst of the series has an advantage of about 20%, reflecting an excellent filtering effect.

[00...

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Abstract

The invention relates to a filter device that removes nitrous oxides and dioxins from discharge gas by transfusing powder type energizing agent to a filtering packet, and filtrating method thereof, wherein the filter device comprises the following components: a conduit tube that help the discharge gas flow into the filter device; a reducing reagent transfusion pipeline that connected to the conduit tube and transfuses alkaline air as reducing reagent into discharge gas in the conduit tube; a first filtering packet that makes the discharge gas transfused with alkaline air flow into it for deoxidizing dispose; a second filtering packet that connected with the first filtering packet to filter air after deoxidize dispose so as to remove nitrous oxides and dioxins; a energizing agent supplier that supplies powder type energizing agent to the connecting leg; a supply blower connected with the second filtering packet; a chimney connected with the supply blower. The invention is able to utilize powder type energizing agent in a certain diameter for continuous cyclic utilization, and circle structure is circle structure with non-tower filtering packets, which can effectively filter harmfulgas and improve filtering effectiveness greatly.

Description

technical field [0001] The present invention relates to filter equipment and a filter method for removing nitrogen oxides and dioxins from exhaust gas by injecting powder catalyst into the filter bag, specifically, the present invention removes nitrogen oxides and dioxins from A filter device and a filter method for removing nitrogen oxides and dioxins from exhaust gas, the filter device and filter method can continuously recycle powder catalysts with specific particle diameters, and the cycle structure of the filter device and filter method is The non-tower filter bag circulation structure can effectively filter harmful gases. Background technique [0002] Exhaust gas from combustion equipment such as incinerators or boilers contains nitrogen oxides (NO x , ie NO, NO 2 , N 2 O and N 2 o 5 etc., mainly NO), sulfur oxides (SO x ), dust, dioxins, heavy metals and volatile organic compounds (Volatile Organic Compounds, VOCs) and other harmful pollutants, these pollutants ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/88B01D53/56B01D53/72B01D46/00
CPCY02C20/10B01D39/08B01D39/2068B01D53/02B01D53/34B01D53/56B01D53/86B01D2257/40
Inventor 金炳桓金正宪李义信金性云
Owner DAEWOO ENG & CONSTR CO LTD
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