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Tail gas treatment device and method for treating vapor extraction tail gas by utilizing mineralized garbage

A technology of gas phase extraction and mineralization of garbage, which is applied in the field of environmental restoration, can solve the problem of high cost of adsorbents, and achieve the effects of reducing secondary pollution, low energy consumption, and prolonging contact time

Pending Publication Date: 2019-12-03
上海环境绿色生态修复科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the prior art, the present invention provides a tail gas treatment device using mineralized waste to treat gas-phase extraction tail gas, so as to solve the technical problem of high cost of adsorbents in the existing gas-phase extraction tail gas treatment device
[0008] The invention provides a method for treating gas-phase extraction tail gas by using mineralized garbage, so as to solve the technical problem of high cost of adsorbent in the existing gas-phase extraction tail gas treatment device

Method used

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  • Tail gas treatment device and method for treating vapor extraction tail gas by utilizing mineralized garbage
  • Tail gas treatment device and method for treating vapor extraction tail gas by utilizing mineralized garbage
  • Tail gas treatment device and method for treating vapor extraction tail gas by utilizing mineralized garbage

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specific Embodiment 1

[0057] Specific embodiment 1, see figure 1 A tail gas treatment device for treating gas phase extraction tail gas using mineralized waste, including a sequentially connected separation unit, an adsorption unit and a monitoring unit.

[0058] The separation unit includes an intake pipe 1, a vacuum pump 2 and a three-phase separator 3, and the intake pipe 1 is provided with an intake valve. The inlet pipe 1 is a delivery pipe for transporting the exhaust gas generated by the gas phase extraction of soil. The inlet of the vacuum pump 2 is connected to the inlet pipe 1. The outlet of the vacuum pump 2 is connected to the inlet of the three-phase separator 3 through a pipeline, and the three phases are separated. The bottom of the device 3 is provided with a waste water discharge port 4 and a waste oil discharge port 5 .

[0059] The adsorption unit includes an adsorption tower, the filler in the adsorption tower is mineralized waste, the bottom of the adsorption tower 7 is provid...

specific Embodiment 2

[0075] Specific embodiment 2, see figure 2 , On the basis of the specific embodiment 1, the exhaust valve 9 is a control valve 6 with one inlet and two outlets, one outlet of the control valve 6 communicates with the atmosphere, and the other outlet of the control valve 6 is connected to the main pipeline. In this patent, two or more adsorption towers can be operated at intervals. After one of the adsorption towers is fully adsorbed, the other is replaced for continuous operation of the device to ensure operating efficiency. At the same time, sufficient time is provided for the replacement of the packing in the adsorption tower to facilitate subsequent microbial treatment. .

[0076] An air pump is installed between the other outlet of the control valve 6 and the main pipeline. Easy to divert.

[0077] The method for using the device to treat tail gas comprises the following steps:

[0078] Step 1: Mineralized waste is filled into the adsorption tower in layers according t...

specific Embodiment 3

[0087] Specific embodiment 3, on the basis of specific embodiment 1 or 2, hollow plate 74, deflector 76 and limit baffle 77 are installed in the adsorption tower interior successively from bottom to top, between deflector 76 and the inner wall of adsorption tower There is a gap between them, and the gap is used as a channel for air flow; the filler is arranged between the hollow plate 74 and the limit baffle 77, and the limit baffle 77 is provided with air holes. The hollow plate 74 of this patent can not only provide support for the mineralized waste 75, but also can evenly distribute the diffused airflow to the interior of the adsorption tower. In addition to this, it also provides a path for falling debris. Through the limit baffle 77, it is possible to prevent the mineralized waste 75 from moving under the action of the airflow, while ensuring the circulation of the airflow.

[0088] The outer wall of the adsorption tower air inlet 71 is connected with the airflow diffusi...

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Abstract

The invention provides a tail gas treatment device for treating vapor extraction tail gas by utilizing mineralized garbage. The tail gas treatment device comprises a separation unit, an adsorption unit and a monitoring unit which are sequentially connected; the separation unit comprises a gas inlet pipe, a vacuum pump and a three-phase separator; the gas inlet pipe is a conveying pipe for conveying tail gas generated by soil vapor extraction; an inlet of the vacuum pump is connected with the gas inlet pipe; an outlet of the vacuum pump is connected with a gas inlet of the three-phase separatorthrough a pipeline; the bottom of the three-phase separator is provided with a wastewater outlet and a waste oil outlet; the adsorption unit comprises an adsorption tower, wherein a filler in the adsorption tower is mineralized garbage; the bottom of the adsorption tower is provided with an adsorption tower gas inlet; the adsorption tower air inlet is butted with a gas outlet of the three-phase separator; the top of the adsorption tower is provided with an adsorption tower gas outlet; and the adsorption tower gas outlet is connected with a gas outlet pipe. The device has the advantages of high efficiency, low cost, stable operation and the like. Meanwhile, mineralized garbage can be changed into valuables, and stored garbage of landfill can be reduced.

Description

technical field [0001] The invention relates to the technical field of environmental restoration, in particular to a treatment device and a tail gas treatment method applied to the tail gas generated by soil gas phase extraction. Background technique [0002] Soil gas phase extraction is an in-situ remediation technology that effectively removes soil volatile organic compounds (VOCs). It uses a vacuum pump to extract gas from the contaminated soil layer, so that the organic pollution in the contaminated soil layer can be discharged through extraction, with low cost and high efficiency. It is an emerging in-situ remediation technology for soil pollution. [0003] The tail gas of soil gas phase extraction contains a large amount of VOCs. VOCs (volatile organic compounds) volatile organic compounds refer to the saturated vapor pressure at room temperature greater than 70.91Pa, the boiling point below 50-260°C under the standard atmospheric pressure of 101.3kPa and the initial b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/85B01D53/44
CPCB01D53/85B01D53/44B01D2251/95B01D2257/708Y02A50/20
Inventor 诸毅李文超陈奕徐轶群薛梦雨杨嘉欣姚泽生
Owner 上海环境绿色生态修复科技有限公司
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