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An energy-saving and environmentally friendly method for treating waste gas from plywood production

A technology of energy saving and environmental protection, treatment method, applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of unsatisfactory adsorption efficiency, achieve better adsorption effect, good economic and environmental protection value, and reduce costs.

Active Publication Date: 2020-02-28
南京瑞轩环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When applied to the treatment of plywood production waste gas, this patent also has the problem that the adsorption efficiency is not ideal

Method used

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  • An energy-saving and environmentally friendly method for treating waste gas from plywood production
  • An energy-saving and environmentally friendly method for treating waste gas from plywood production
  • An energy-saving and environmentally friendly method for treating waste gas from plywood production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The energy-saving and environment-friendly treatment method for plywood production waste gas includes the following steps:

[0034] (1) The hot-pressed organic waste gas produced when the plywood hot press is hot-pressed is collected through the gas collecting hood 1;

[0035] (2) Input the collected hot-pressed organic waste gas into the ultraviolet irradiation box, and the irradiation intensity is 100W / m 2 After irradiating for 30 seconds under the same conditions, pretreated exhaust gas 1 is obtained;

[0036] (3) Input the pretreated waste gas 1 into the freeze dryer 2 for freeze drying to obtain the pretreated waste gas 2, the water vapor in the pretreated waste gas 1 is condensed to form liquid condensed water, and the condensed water is discharged and recovered, wherein the freeze drier 2 includes Air inlet 3, air outlet 4, gas-liquid separation device 5, drain pipe 6, air inlet 3, air outlet 4, and drain pipe 6 are respectively connected to the gas-liquid separ...

Embodiment 2

[0041] The energy-saving and environment-friendly treatment method for plywood production waste gas includes the following steps:

[0042] (1) The hot-pressed organic waste gas produced when the plywood hot press is hot-pressed is collected through the gas collecting hood 1;

[0043] (2) Input the collected hot-pressed organic waste gas into the ultraviolet irradiation box, and the irradiation intensity is 100W / m 2 After irradiating for 30 seconds under the same conditions, pretreated exhaust gas 1 is obtained;

[0044] (3) Input the pretreated waste gas 1 into the freeze dryer 2 for freeze drying to obtain the pretreated waste gas 2, the water vapor in the pretreated waste gas 1 is condensed to form liquid condensed water, and the condensed water is discharged and recovered, wherein the freeze drier 2 includes Air inlet 3, air outlet 4, gas-liquid separation device 5, drain pipe 6, air inlet 3, air outlet 4, and drain pipe 6 are respectively connected to the gas-liquid separ...

Embodiment 3

[0048] The energy-saving and environment-friendly treatment method for plywood production waste gas includes the following steps:

[0049] (1) The hot-pressed organic waste gas produced when the plywood hot press is hot-pressed is collected through the gas collecting hood 1;

[0050] (2) Input the collected hot-pressed organic waste gas into the ultraviolet irradiation box, and the irradiation intensity is 100W / m 2 After irradiating for 30 seconds under the same conditions, pretreated exhaust gas 1 is obtained;

[0051](3) Input the pretreated waste gas 1 into the freeze dryer 2 for freeze drying to obtain the pretreated waste gas 2, the water vapor in the pretreated waste gas 1 is condensed to form liquid condensed water, and the condensed water is discharged and recovered, wherein the freeze drier 2 includes Air inlet 3, air outlet 4, gas-liquid separation device 5, drain pipe 6, air inlet 3, air outlet 4, and drain pipe 6 are respectively connected to the gas-liquid separa...

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Abstract

The invention provides an energy-saving and environment-friendly method for disposing waste gas generated during plywood production. The method comprises the following steps of (1) collecting hot-pressed organic waste gas generated during hot pressing of a plywood hot press machine through a gas collecting cover; (2) inputting the collected hot-pressed organic waste gas into an ultraviolet irradiation box for irradiation for 30 seconds to obtain first predisposed waste gas; (3) inputting the first predisposed waste gas into a freeze dryer for freeze drying to obtain second predisposed waste gas, condensing water vapor in the first predisposed waste gas to form liquified condensed water, and discharging and recovering the condensed water; (4) inputting the second predisposed waste gas intoan activated charcoal adsorption device for adsorption disposal and then discharging the waste gas. The method achieves higher adsorption efficiency on the waste gas generated during plywood production.

Description

technical field [0001] The invention relates to a treatment method for waste gas, in particular to an energy-saving and environment-friendly treatment method for plywood production waste gas. Background technique [0002] The process flow of plywood production generally includes processes such as core board drying, gluing, billet formation, pre-pressing, hot pressing, sanding, veneering, sawing, etc. The hot pressing step will generate hot-pressed organic waste gas (VOC S ). [0003] At present, the common treatment methods for hot-pressed organic waste gas generated in the production process of plywood mainly include activated carbon adsorption, photo-oxygen catalysis, absorption, low-temperature plasma, etc. Among them, the activated carbon adsorption method is widely used. The principles, advantages, and The disadvantages and scope of application are shown in the table below: [0004] [0005] [0006] [0007] In actual monitoring, the efficiency of photocatal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/00B01D53/04B01D53/26
CPCB01D53/002B01D53/007B01D53/04B01D53/265B01D2257/70
Inventor 徐泽林韩新民黄超段会英於俊颖
Owner 南京瑞轩环保科技有限公司