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Zero emission device and method for VOCs desorption condensation treatment tail gas

A zero-emission, adsorption device technology, applied in chemical instruments and methods, gas treatment, separation methods, etc., to achieve the effects of providing condensation efficiency, increasing return air temperature, and reducing terminal treatment costs

Pending Publication Date: 2022-01-11
孙荣军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a zero-emission device for VOCs desorption and condensation treatment tail gas, so as to solve the problem of using the end treatment tail gas as a working medium

Method used

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  • Zero emission device and method for VOCs desorption condensation treatment tail gas
  • Zero emission device and method for VOCs desorption condensation treatment tail gas
  • Zero emission device and method for VOCs desorption condensation treatment tail gas

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Experimental program
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Effect test

Embodiment 1

[0049] Embodiment 1: The adsorption device is a single adsorbent adsorption box.

[0050] At present, a single adsorption box is generally used to adsorb VOCs+end treatment. In order to meet the requirements of advanced treatment, this embodiment optimizes a zero-emission device for VOCs desorption and condensation treatment of tail gas, such as figure 1 shown.

[0051] figure 1 Among them, a zero-emission device for VOCs desorption and condensation treatment of tail gas, which is used for the terminal treatment of a single adsorption box. The single adsorption box is a device for absorbing and concentrating VOCs. It has an inlet port for VOCs and an outlet port for VOCs; the air inlet valve 1 The inlet port of -1 is connected with the inlet port of adsorption box 1, which is also the inlet port of VOCs; the inlet port of return air valve 1-2 is connected with the outlet port of adsorption box 1 through heater R, the The connection is also the outlet port of VOCs;

[0052] ...

Embodiment 2

[0088] Example 2: The self-concentrating adsorption box has the advantages of desorption and re-concentration, and the air volume of the terminal treatment is small and the concentration is high. This embodiment is a zero-emission device for VOCs desorption and condensation treatment tail gas preferred for the self-concentrating adsorption box, such as image 3 shown.

[0089] A zero-emission device for VOCs desorption and condensation treatment tail gas, which is used for the terminal treatment of the self-concentration adsorption box. The self-concentration adsorption box includes: a single adsorption box and self-concentration devices 1-3, the structure of the single adsorption box and The single adsorption box of embodiment 1 has the same structure; the air inlet end of the air inlet valve 1-1 of the self-concentrating device 1-3 and the air inlet valve 1-1 of the single adsorption box is communicated with the air outlet end of the air return valve 1-2;

[0090] The self-c...

Embodiment 3

[0101] Embodiment 3: This embodiment is a structural type of the end differential heat exchanger 3 applied in the present invention. The end differential heat exchanger 3 includes: a shell, a hot air inlet 3-1, and a hot air outlet 3-2 , cold air inlet 3-3, cold air outlet 3-4, return air coil 3-5; the housing is rectangular or cylindrical; inside the housing is a hot air chamber, and inside the return air coil 3-5 is Cold air passage; the inlet of the return air coil 3-5 is the cold air inlet 3-3, the outlet of the return air coil 3-5 is the cold air outlet 3-4, and the cold air inlet 3-3 and the cold air outlet 3-4 are connected to the housing On the side wall; the hot air inlet 3-1 and the hot air outlet 3-2 are connected to the two ends of the housing.

[0102] The return air coil 3-5 is a metal coil; the cold air inlet 3-3 and the cold air outlet 3-4 are wire pipes, or quick-connect pipes, and the wire pipes or quick-connect pipes are connected to the return air coil; Th...

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Abstract

The invention discloses a zero emission device and method for VOCs desorption condensation treatment tail gas, and belongs to the technical field of VOCs tail end treatment. The zero discharge device comprises an adsorption device for treating volatile organic compounds (VOCs) of the adsorption device, and further comprises an adjusting fan, an end difference heat exchanger, a heater and a condensation absorption tower; the adjusting fan is arranged at the outlet end of an air inlet valve or the inlet end of an air return valve; the inlet end of the air inlet valve is connected with the inlet end of the adsorption box, and the connection part is an air inlet port of the VOCs; the inlet end of the air return valve is connected with the outlet end of the adsorption box through the heater, and the connection part is an air outlet port of the VOCs at the same time; and a hot air outlet of the end difference heat exchanger communicates with an air inlet of the condensation absorption tower, and a cold air inlet of the end difference heat exchanger communicates with an air return opening of the condensation absorption tower. The device and method have the advantages that VOCs deep treatment realizes high desorption rate, energy-saving and high-efficiency zero emission of tail gas, meanwhile, the tail gas is recycled as desorption gas, and the tail end treatment cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of VOCs terminal treatment, in particular to a zero-emission device and method for VOCs desorption and condensation treatment of tail gas. Background technique [0002] The present application provides a terminal treatment tail gas zero emission device. [0003] VOCs (volatile organic compounds) volatile organic compounds refer to organic compounds with a saturated vapor pressure greater than 70.91 Pa at normal temperature, a boiling point below 50-260°C at standard atmospheric pressure of 101.3kPa and an initial boiling point equal to 250°C, or organic compounds at normal temperature and pressure Any volatile organic solid or liquid. [0004] At present, VOCs treatment mainly adopts adsorption + combustion technology. In view of the defects in the application of this technology, the inventor has developed patented technologies CN214598097, CN214598090, and CN214598091, all of which include adsorption boxes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02B01D53/14B01D53/18B01D53/00
CPCB01D53/02B01D53/002B01D53/1487B01D53/18B01D2257/708B01D2259/4009
Inventor 孙荣军
Owner 孙荣军
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