Multi-phase multi-stage oxidation treatment device for VOCs waste gas
A technology for oxidation treatment and exhaust gas, which is applied in the direction of gas treatment, chemical instruments and methods, membrane technology, etc., can solve the problems of high cost of manual maintenance, and achieve the effect of solving maintenance costs and avoiding multiple shutdowns for desorption operations
Active Publication Date: 2021-07-09
中珪环科(杭州)环保科技有限公司
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Problems solved by technology
[0003] In the prior art, VOCs are generally treated with a multi-stage oxidation or adsorption system, but the adsorption module in it needs to be replaced frequently when it reaches saturation, and the cost of manual maintenance is relatively high.
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[0021] Example: refer to figure 1 Shown: a VOCs waste gas multi-phase multi-stage oxidation treatment device, including a deacidification tower, a photo-oxygen reactor, an oxidation spray tower and an activated carbon adsorption tower connected in sequence from the waste gas input to the output;
[0022] Among them, the acid removal tower deacidifies the waste gas (that is, removes acid gas) by means of alkali washing, so as to facilitate the later treatment;
[0023] The photo-oxygen reactor uses photocatalyst to carry out photocatalytic oxidation reaction on the exhaust gas, breaks the molecular chain of high-bond energy substances, kills the bacteria in the exhaust gas, and decomposes the toxin released by the bacteria; And under the action of visible light, it produces a strong catalytic degradation function: it can effectively degrade toxic and harmful gases in the air; it can effectively kill a variety of bacteria, and it can decompose and harmless the toxins released by...
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The invention discloses a multi-phase multi-stage oxidation treatment device for VOCs (volatile organic compounds) waste gas, which relates to the field of environmental protection and is sequentially connected with a deacidification tower, a light oxygen reactor, an oxidation spray tower and an activated carbon adsorption tower in the direction from input to output of the waste gas. The activated carbon adsorption tower is connected with an activated carbon desorption system, the activated carbon desorption system inputs hot air into the activated carbon adsorption tower, an independent flow channel is formed in the activated carbon adsorption tower, the independent flow channel is separated from a flow field of waste gas in the activated carbon adsorption tower, and the flow channel at least passes through part of activated carbon units installed in the activated carbon adsorption tower. And the output end of the flow channel is connected to the deacidification tower for secondary treatment. The device has the beneficial effects that the whole treatment device is in multi-stage and multi-phase distribution, the photo-anode reactor in the device can break high-bond-energy substance molecular chains and effectively kill various bacteria, and subsequent treatment is facilitated; and the activated carbon adsorption tower has an on-line desorption function, so that repeated shutdown desorption operation is avoided, and the maintenance cost is reduced.
Description
technical field [0001] The invention relates to the field of environmental protection, in particular to a VOCs waste gas multi-phase multi-stage oxidation treatment device. Background technique [0002] The main pollutants in exhaust gas include: VOC (volatile organic compounds), hydrogen sulfide, hydrogen chloride, ammonia and non-methane total hydrocarbons. Odor gases such as hydrogen sulfide, hydrogen chloride, and ammonia are not only uncomfortable to the senses, but also harmful to the human body. Volatile organic compounds (VOCs) refer to organic compounds whose saturated vapor pressure is greater than 70Pa at normal temperature and whose boiling point is lower than 250°C at normal pressure. Volatile organic compounds (VOCs) include: alkanes, aromatics, olefins, alcohols, ethers, etc. are the most common pollutants, which have a huge destructive effect on the environment. [0003] In the prior art, VOCs are generally treated with a multi-stage oxidation or adsorption...
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IPC IPC(8): B01D53/04
CPCB01D53/0407B01D53/0438B01D2253/102B01D2259/4009
Inventor 郑雪英郑齐星刘国选
Owner 中珪环科(杭州)环保科技有限公司