VOC (Volatile Organic Compounds) enrichment device

An enrichment and adsorbent technology, applied in gas treatment, dispersed particle separation, membrane technology, etc., can solve the problems of continuous operation and high cost, and achieve the effect of meeting industrial production needs, improving adsorption rate and efficiency, and reducing costs.

Inactive Publication Date: 2017-03-22
CHNA ENERGY INVESTMENT CORP LTD +2
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AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a VOCs enrichment device to solve the problems of inability to operate continuously and high cost in the prior art for the adsorption and enrichment treatment of low-concentration VOCs mixed gas

Method used

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  • VOC (Volatile Organic Compounds) enrichment device

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Embodiment 1

[0041] Such as figure 1 As shown, the circulating material in the circulating fluidized bed device 10 is a VOCs adsorbent, the adsorbent is solid particles, and the particle size of the adsorbent is 0.1-2mm. The fluidizing gas of the circulating fluidized bed device 10 is a low-temperature mixed gas containing low-concentration VOCs produced by the high-temperature mixed gas containing low-concentration VOCs after heat exchange by the heat exchanger 30. The temperature of the high-temperature mixed gas is greater than 200°C, and the temperature of the low-temperature mixed gas is less than 200°C. The purified gas discharged from the circulating fluidized bed device 10 is heated up through the heat exchanger 30, part of it is removed from the device, and the other part is returned to the desorption device 20 as fluidization gas, and the flow rate of the purified gas removed is much larger than that of the purified gas used as fluidization gas capacity. Part of the adsorbent a...

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Abstract

The invention provides a VOC (Volatile Organic Compounds) enrichment device. The device comprises a circulating fluidized bed device and a desorption device, wherein the circulating fluidized bed device is provided with a low-concentration VOC mixed gas inlet, an adsorbent inlet, a purified gas outlet and a solid-phase material outlet; the desorption device is provided with an inlet to be desorbed, a fluidized gas inlet and an enriched gas outlet; the inlet to be desorbed is communicated with the solid-phase material outlet. In the VOC enrichment device, the circulating fluidized bed device is taken as an adsorption device so that system running energy consumption can be lowered remarkably, and the cost can be lowered. Meanwhile, more sufficient contact between low-concentration VOC mixed gas and an adsorbent can be realized, and the adsorption rate and efficiency of the VOC adsorbent are increased. Moreover, the circulating fluidized bed device is taken as the adsorption device, circular use of the adsorbent can be realized, so that long-term, continuous and stable running of a treating procedure is realized, and industrial production demands can be met.

Description

technical field [0001] The invention relates to the field of volatile organic compound VOCs treatment, in particular to a VOCs enrichment device. Background technique [0002] VOCs exhaust gas seriously pollutes the environment and endangers human health. At present, the methods for dealing with VOCs mainly include high-temperature combustion method and adsorption-desorption method. The combustion method is more efficient in removing VOCs, but cannot recover valuable components. The adsorption-desorption method can effectively recover the useful components in the exhaust gas, and the fixed-bed adsorption method is usually used. However, because the adsorbent is generally sintered into a shape consistent with the bed size, such as a rotary adsorption-desorption device, it is impossible to replace the adsorbent continuously, thus reducing the continuity. Moreover, the resistance of the fixed bed is relatively high. In order to ensure that the waste gas containing VOCs passe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/12
CPCB01D53/12B01D2257/708B01D2259/40083
Inventor 杨春振张波李洪梅张梦泽荀庆超
Owner CHNA ENERGY INVESTMENT CORP LTD
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