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Synergistic removal method for multiple pollutants in flue gas

A synergistic removal method and technology of pollutants, applied in the field of synergistic removal of multiple pollutants in flue gas, can solve the problems of complex flue gas purification process, high operating cost, poor purification effect, etc., and achieve good environmental protection, economy, The effect of reducing energy consumption and improving high temperature resistance

Inactive Publication Date: 2019-06-07
BEIJING ENVIRONMENT ENG TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] For this reason, the embodiment of the present invention provides a method for synergistic removal of multiple pollutants in flue gas to solve the problems of complex process, poor purification effect and high operating cost in the existing flue gas purification process

Method used

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  • Synergistic removal method for multiple pollutants in flue gas
  • Synergistic removal method for multiple pollutants in flue gas

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Embodiment 1

[0021] like figure 1 As shown, the method for synergistic removal of multiple pollutants in flue gas includes the following steps:

[0022] Step a, spray ammonia water into the high-temperature flue gas to remove SO in the high-temperature flue gas 3 , to obtain preliminary deacidification flue gas;

[0023] Due to the high temperature of the high-temperature flue gas produced by the incinerator after entering the flue, the ammonia water sprayed into the high-temperature flue gas evaporates into ammonia gas and water vapor under high temperature conditions. Specifically, a dual-fluid spray gun can be used for spraying. It will interact with SO present in high temperature flue gas 3 The reaction produces NH 4 HSO 4 , NH 4 HSO 4 Attached to the surface of the catalytic filter together with the dust in the flue gas, it will not be like a single NH 4 HSO 4 The same adheres to the inside of the catalyst to slow down the poisoning of the downstream catalytic filter; the seco...

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Abstract

The embodiment of the invention discloses a synergistic removal method for multiple pollutants in flue gas. The synergistic removal method for the multiple pollutants in the flue gas comprises the following steps: step a, spraying ammonia water into the high-temperature flue gas to remove SO3 in the high-temperature flue gas to obtain preliminary deacidified flue gas; step b, spraying an alkalineagent into the preliminary deacidified flue gas to remove acid gas in the preliminary deacidified flue gas to obtain secondary deacidified flue gas; step c, spraying activated carbon powder into the secondary deacidified flue gas to remove heavy metal particles and dioxins in the secondary deacidified flue gas to obtain adsorption-treated flue gas; and step d, introducing the adsorption-treated flue gas into a catalytic filter, performing catalysis, and performing filtration treatment to obtain tail gas. The synergistic removal method for the multiple pollutants in the flue gas provided by theembodiment of the invention can not only realize simultaneous removal of the multiple pollutants such as dust, the acid gas, the dioxins and VOCs, but also has better temperature resistance and corrosion resistance and very good environmentally-friendly and economic double benefits.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of waste gas treatment, and in particular to a method for synergistic removal of multiple pollutants in flue gas. Background technique [0002] In recent years, large-scale smog has continued to occur in most parts of my country, causing serious harm to human health. It has become a social focus, a hot spot, and a major livelihood issue, causing great harm to human health and environmental quality, and seriously restricting the sustainable development of the social economy. , and dust, sulfur dioxide, nitrogen oxides, VOC, etc. are the main reasons for the formation of smog. Therefore, it is very important to accelerate the development of dust removal, denitrification and de-VOC technologies in industries such as thermal power, steel, glass, ceramics, cement, non-ferrous metals, petrochemicals, chemicals, and waste incineration. The traditional dust removal, denitrification, and VOC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/75B01D53/70B01D53/68B01D53/50B01D53/44B01D53/40
Inventor 王明飞温冬李本善郑凤才何青松何亮张晨光
Owner BEIJING ENVIRONMENT ENG TECH CO LTD
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