A treatment process for waste gas produced by recycling hazardous waste inorganic salts

A treatment process and inorganic salt technology, applied in the field of waste gas treatment process, can solve problems such as pollution and complex sources, and achieve the effects of improving denitrification efficiency, increasing contact time, and prolonging service life

Active Publication Date: 2021-07-30
内蒙古中泰汇金环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Due to the composition and source of hazardous inorganic salt waste, the waste gas produced by the calcination method contains various acid gases such as hydrogen chloride and sulfur dioxide, and toxic and harmful substances such as dioxins. If it is not handled properly, it will cause serious pollution.

Method used

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  • A treatment process for waste gas produced by recycling hazardous waste inorganic salts

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Effect test

Embodiment 1

[0034] A treatment process for waste gas produced by recycling hazardous waste inorganic salts. Its technical scheme mainly includes denitrification, quenching, activated carbon adsorption, bag dust removal and deacidification processes, the details are as follows:

[0035] Denitration, the denitrification is carried out in a deep flue gas denitrification device, the temperature of the flue gas from the combustion furnace is 900°C, and the imported flue gas volume is 6800Nm 3 / h, the denitrification agent is sprayed into the denitrification device at a rate of 100kg / h;

[0036] Quenching, the quenching is carried out in a semi-dry quenching tower, the inlet temperature of the flue gas is 500°C, and the flue gas volume is 6000Nm 3 / h, spray 10% calcium hydroxide emulsion at a speed of 300kg / h in the semi-dry quenching tower;

[0037]Activated carbon adsorption, using activated carbon powder sprayed into the Venturi dry reactor to further adsorb most of the dioxins, the inlet t...

Embodiment 2

[0047] A treatment process for waste gas produced by recycling hazardous waste inorganic salts. Its technical scheme mainly includes denitrification, quenching, activated carbon adsorption, bag dust removal and deacidification processes, the details are as follows:

[0048] Denitrification, the denitrification is carried out in the deep flue gas denitrification device, the temperature of the flue gas from the combustion furnace is 1000 °C, and the volume of imported flue gas is 8000Nm 3 / h, the denitrification agent is sprayed into the denitrification device at a rate of 150kg / h;

[0049] Quenching, the quenching is carried out in a semi-dry quenching tower, the inlet temperature of the flue gas is 530°C, and the flue gas volume is 8000Nm 3 / h, spray 13% calcium hydroxide emulsion according to the speed of 400kg / h in the semi-dry quenching tower;

[0050] Activated carbon adsorption, using activated carbon powder sprayed into the Venturi dry reactor to further adsorb most of ...

Embodiment 3

[0060] A treatment process for waste gas produced by recycling hazardous waste inorganic salts. Its technical scheme mainly includes denitrification, quenching, activated carbon adsorption, bag dust removal and deacidification processes, the details are as follows:

[0061] Denitrification, the denitrification is carried out in the deep flue gas denitrification device, the temperature of the flue gas from the combustion furnace is 1050°C, and the imported flue gas volume is 12000Nm 3 / h, the denitrification agent is sprayed into the denitrification device at a rate of 200kg / h;

[0062] Quenching, the quenching is carried out in a semi-dry quenching tower, the inlet temperature of the flue gas is 550°C, and the flue gas volume is 10000Nm 3 / h, spray 15% calcium hydroxide emulsion at a speed of 500kg / h in the semi-dry quenching tower;

[0063] Activated carbon adsorption, using activated carbon powder sprayed into the Venturi dry reactor to further adsorb most of the dioxins, t...

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Abstract

The invention relates to the field of environmental protection treatment. The invention provides a treatment process for the waste gas produced by the recycling of hazardous waste inorganic salts. The invention uses denitrification, rapid cooling, activated carbon adsorption, bag dust removal and deacidification processes to process the calcined hazardous waste inorganic salts. The waste gas can be treated to remove the waste gas containing hydrogen chloride, sulfur dioxide and other acid gases and dioxin-like toxic and harmful substances to the maximum extent, so that the waste gas can reach the discharge standard and have no pollution to the environment; this method adopts a Alkaline, hydrolysis-resistant and oxidation-resistant modified glass fiber filter materials can resist high-temperature acid mist corrosion in exhaust gas and greatly extend service life.

Description

technical field [0001] The invention relates to the field of environmental protection management, in particular to a treatment process for waste gas produced by recycling hazardous waste inorganic salts. Background technique [0002] At present, the research and industrialization of hazardous waste inorganic salt harmless disposal and resource utilization process technology have received the attention of many researchers, and are actively organizing the research and development and application of new processes, and various enterprises are actively participating in process research. Since most processes adopt the calcination method, waste gas is an unavoidable by-product during the treatment process. How to treat these waste gases in a harmless manner is also a key issue. [0003] CN101732982A discloses a feed factory waste gas treatment process, which is characterized in that: the waste gas treatment process includes the following steps: waste gas collection → dust removal →...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/68B01D53/56B01D53/50B01D46/02B01D39/06
CPCB01D39/06B01D46/02B01D53/06B01D53/501B01D53/56B01D53/68B01D53/78B01D2251/2067B01D2251/304B01D2251/604B01D2253/102B01D2257/2045B01D2257/2064B01D2258/0283Y02C20/30
Inventor 刘杰苗兵兵
Owner 内蒙古中泰汇金环保科技有限公司
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