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Comprehensive treatment method and comprehensive treatment apparatus for high-concentration chlorine-containing organic waste gas

A technology for comprehensive treatment of organic waste gas, applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of cooling water consumption, reduce operating costs, reduce consumption, and improve economic efficiency

Active Publication Date: 2017-05-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this invention will not only produce a large amount of absorption waste liquid, but also the high-temperature flue gas liquid discharged from the incinerator needs to enter the water cooling tower and then enter the alkali washing tower, requiring a special cooling device and consuming a large amount of cooling water

Method used

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  • Comprehensive treatment method and comprehensive treatment apparatus for high-concentration chlorine-containing organic waste gas
  • Comprehensive treatment method and comprehensive treatment apparatus for high-concentration chlorine-containing organic waste gas
  • Comprehensive treatment method and comprehensive treatment apparatus for high-concentration chlorine-containing organic waste gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A chlorobenzene vacuum pump in a chemical plant discharges tail gas with a gas volume of 7865Nm 3 / h, the temperature is normal temperature, the pressure is normal pressure, and the exhaust gas composition is as follows:

[0030]

[0031] Using the method and device of the present invention for treatment, first the waste gas enters the thermal storage oxidation reactor, the oxidation temperature is 600°C, and the flue gas outlet temperature of the oxidation bed is 50°C. Part of the high-temperature flue gas obtained after oxidation is used for the energy self-balancing of the thermal storage reaction. , a part of the high-temperature gas is discharged into the Stirling generator for power generation. After the power generation, the outlet temperature of the flue gas is controlled at 50°C, and the power generation is 35kwh. After this power is passed into the membrane electrolysis reactor, 10kg / h of NaOH lye can be regenerated. The oxidized flue gas is mixed with the ...

Embodiment 2

[0033] Exhaust gas from a chlor-alkali plant in a chemical plant with a gas volume of 12000Nm 3 / h, the temperature is normal temperature, the pressure is normal pressure, and the exhaust gas composition is as follows:

[0034]

[0035] Using the method and device of the present invention for treatment, first the waste gas enters the thermal storage oxidation reactor, the oxidation temperature is 700°C, and the flue gas outlet temperature of the oxidation bed is 60°C. Part of the high-temperature flue gas obtained after oxidation is used for energy self-balancing of the thermal storage reaction , a part of the high-temperature gas is discharged into the Stirling generator for power generation. After the power generation is controlled, the outlet temperature of the flue gas is 90°C, and the power generation is 93kwh. After this power is passed into the membrane electrolysis reactor, 27kg / h of NaOH lye can be regenerated. After the oxidized flue gas is mixed with the flue gas...

Embodiment 3

[0037] Exhaust gas from a chlor-alkali plant in a chemical plant with a gas volume of 10,000Nm 3 / h, the temperature is normal temperature, the pressure is normal pressure, and the exhaust gas composition is as follows:

[0038]

[0039] Using the method and device of the present invention for treatment, first the exhaust gas enters the thermal storage oxidation reactor, the oxidation temperature is 1000°C, the outlet temperature of the oxidation bed flue gas is 80°C, and a part of the high temperature flue gas obtained after oxidation is used for the thermal storage reaction energy self- Balance, part of the high-temperature gas is discharged into the Stirling generator for power generation. After the power generation, the outlet temperature of the flue gas is controlled to 80°C, and the power generation is 114kwh. After this power is passed into the membrane electrolysis reactor, 32kg / h of NaOH lye can be regenerated. The oxidized flue gas and the flue gas after Stirling ...

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Abstract

The invention discloses a comprehensive treatment method for high-concentration chlorine-containing organic waste gas. The comprehensive treatment method comprises: (1) introducing waste gas into a heat storage oxidation reactor, oxidizing, and controlling the temperature of the flue gas outlet of an oxidation bed layer at less than 100 DEG C; (2) leading out the obtained high temperature flue gas excluding the high temperature flue gas for maintaining heat storage reaction energy balance from the middle portion high temperature zone of the reactor, entering a Stirling generator, and controlling the temperature of the flue gas outlet after the electricity generation at less than 100 DEG C; (3) mixing the flue gases discharged in the step (1) and the step (2), conveying the mixed flue gas into an alkali liquid absorption tower, completely absorbing the acid gas in the flue gas, decreasing the flue gas temperature to less than 60 DEG C, and discharging the purified gas meeting the standard; and (4) conveying the absorption waste liquid into an electrochemical regeneration device, wherein the regenerated alkali liquid returns to an alkali washing absorption tower so as to be recycled. According to the present invention, the purified gas after the treatment can achieve the discharging standard, the waste of a lot of energy cannot be caused, the subsequent treatment does not require the arrangement of the cooling device, a large amount of absorption waste liquid cannot be produced, and the economy is improved remarkably.

Description

technical field [0001] The invention belongs to the technical field of environmental protection waste gas treatment, and in particular relates to a comprehensive treatment method and device for high-concentration chlorine-containing organic waste gas. Background technique [0002] In the production process of chlor-alkali industry, chlorine-containing organic waste gas will be produced. Chlorine-containing organic waste gas is a serious pollutant. Among them, chlorinated aromatic hydrocarbons are biologically toxic, and have stable chemical properties, are difficult to be biodegraded, and remain in the environment for a long time, posing a serious threat to the ecological environment and human health. In recent years, economic and human losses caused by the leakage of chlorine-containing organic waste gas have occurred from time to time all over the world. [0003] The treatment technologies for chlorine-containing organic waste gas are roughly divided into solid adsorption...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/78B01D53/96B01D53/70
CPCB01D53/70B01D53/75B01D53/78B01D53/96B01D2251/304B01D2257/2064B01D2258/02
Inventor 刘志禹王海波刘忠生王新赵磊
Owner CHINA PETROLEUM & CHEM CORP
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