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Method for treating organic waste gases by utilizing rotary wheel

A technology of organic waste gas and treatment methods, which is applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc. It can solve the problems of secondary pollution, affecting the regeneration of adsorbents, and the inability to effectively treat industrial waste gas, so as to achieve cost saving and good regeneration Effect

Inactive Publication Date: 2016-08-10
ZHEJIANG QICAI ECO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned technology has the following disadvantages in the specific use process: the exhaust gas must be incinerated by RTO after being adsorbed by the rotor. Although the removal rate of organic waste gas by RTO is very high, its investment cost is very high
In addition, some organic substances are often unable to desorb effectively, and remain in the pores of the adsorbent or decompose or polymerize into oligomers, which affect the regeneration of the adsorbent.
The organic matter remaining in the adsorbent causes the adsorption capacity of the adsorbent to gradually decrease, making it impossible to effectively treat industrial waste gas
At this time, the adsorbent needs to be replaced, or disassembled and heated at high temperature, or cleaned with an organic solvent to remove the residual organic matter in the channel, but secondary pollution will occur during loading and unloading, and disassembling the runner is more complicated

Method used

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  • Method for treating organic waste gases by utilizing rotary wheel
  • Method for treating organic waste gases by utilizing rotary wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The concentration is 800mg / m 3 , the wind volume is 50000m 3 / h of waste gas, which contains organic gases: formaldehyde, methanol.

[0045] (1) Adsorption: supporting catalyst Pt and molecular sieve adsorbent are loaded on the support layer made of polymer fiber polyimide, the quality of Pt is 50g, the quality of molecular sieve is 5kg, and the catalyst consumption is 1% of adsorbent. The runner runs clockwise at a speed of 3 revolutions per hour, exhaust gas is adsorbed through the adsorption area of ​​the runner, and the exhaust gas after adsorption is directly discharged into the atmosphere, and the removal rate of organic matter reaches 99%.

[0046] (2) Catalytic decomposition: When the runner moves to the catalytic decomposition zone, the 3 / h hot air, the adsorbed formaldehyde and methanol are decomposed into H under the action of high temperature and catalyst 2 O and CO 2 , the content of organic matter in the exhaust gas is less than 10mg / m 3 , the wheel ...

Embodiment 2

[0049] The concentration is 300mg / m 3 , air volume is 5000m 3 / h of waste gas, which contains organic gases: petroleum ether, toluene.

[0050] (1) Adsorption: Load 1kg of catalyst Mn on a support layer made of ceramic fibers 0.5 Cu 0.5 o 1.1 / TiO 2 , Mn in the catalyst 0.5 Cu 0.5 o 1.1 The mass fraction is 10%, zeolite is used as the adsorbent, the mass is 5kg, the runner runs clockwise at a speed of 1 revolution per hour, the exhaust gas is adsorbed through the adsorption area of ​​the runner, the tail gas is directly discharged into the atmosphere, and the removal rate of organic matter reaches 99%.

[0051] (2) Catalytic decomposition: When the runner moves to the catalytic decomposition zone, the 240°C, 250m 3 / h hot air, the adsorbed petroleum ether and toluene are decomposed into H under the action of high temperature and catalyst 2 O and CO 2 , the content of organic matter detected in the exhaust gas is less than 5mg / m 3 , the wheel is regenerated.

[005...

Embodiment 3

[0054] The concentration is 300mg / m 3 , the wind volume is 6000m 3 / h of waste gas, which contains organic gas: dichloroethane.

[0055] (1) Adsorption: Load 1kg catalyst TiO on a support layer made of ceramic fibers 2 , using zeolite as the adsorbent, the mass is 6kg, the catalyst accounts for 14%, the runner runs clockwise at a speed of 2 revolutions per hour, the waste gas is adsorbed through the adsorption area of ​​the runner, the tail gas is directly discharged into the atmosphere, and the removal rate of organic matter reaches 90% %.

[0056] (2) Catalytic decomposition: when the runner moves to the catalytic decomposition zone, the 3 / h hot air, the adsorbed dichloroethane is decomposed into HCl and CO under the action of high temperature and catalyst 2 , the organic content detected in the exhaust gas is about 30mg / m 3 , dichloroethane could not be completely decomposed under this condition, and the runner was regenerated.

[0057] (3) Cooling: When the runner m...

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Abstract

The invention discloses a method for treating organic waste gas by using a runner, comprising: step 1, a runner loaded with an adsorbent and a catalyst contacts and adsorbs the organic waste gas; step 2, applies high-temperature gas to the adsorbed runner, and Under the action of the catalyst, the attachment on the adsorbent is oxidized and decomposed; step 3, applying room temperature or low temperature gas to the runner after oxidative decomposition of organic matter to cool down; step 4, repeating steps 1 to 3 to complete the treatment of organic waste gas. The runner uses ceramic fiber or polymer fiber as a base material to make a support layer, and the surface of the support layer is coated with the adsorbent and catalyst. The invention realizes the degradation and harmless discharge of organic matter, utilizes the high temperature generated by the catalytic reaction to effectively remove some difficult-to-desorb substances in the adsorbent, and regenerates the adsorbent on the runner well.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a treatment method for treating organic waste gas by using a runner. Background technique [0002] The adsorption method is a method used in industry to treat organic waste gas. Utilizing the porous nature of the adsorbent, the volatile organic gas, odorous or toxic gas discharged from the industry can be physically or chemically adsorbed. Adsorbed in the pores of the adsorbent to achieve the purpose of purifying the exhaust gas. After the adsorbent reaches saturated adsorption, the adsorbed substances adsorbed in the pores are removed through the regeneration process, so that the adsorbent can be reused. [0003] Rotary adsorption is a device capable of continuous and uninterrupted adsorption and desorption. It omits the steps of interrupting the adsorption process or switching adsorption towers when the adsorbent reaches saturation, and realizes the function of con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86
CPCB01D53/8671B01D53/06B01D2253/102B01D2253/108B01D2253/202B01D2255/1021B01D2255/1023B01D2255/104B01D2255/20707B01D2255/20723B01D2255/20784B01D2257/708B01D2259/40088
Inventor 蒋云峰李翔毛兵成一波吕杨楼银川
Owner ZHEJIANG QICAI ECO TECH CO LTD
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