Laboratory waste gas exhausting system and treatment method

A laboratory and waste gas technology, which is applied in the field of waste gas treatment and laboratory design, can solve the problems of low energy consumption and small investment, and achieve the effects of saving investment, simple equipment, improving adsorption efficiency and service life

Inactive Publication Date: 2019-07-23
GUANGDONG SANET TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a laboratory waste gas exhaust system and treatment method that can effectively complete the mixed discharge and treatment of all waste gases in a small physical and chemical laboratory (partition) with only one set of fans, with low investment and low energy consumption , so as to solve the aforementioned problems existing in the prior art

Method used

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  • Laboratory waste gas exhausting system and treatment method
  • Laboratory waste gas exhausting system and treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] This embodiment provides a laboratory waste gas exhaust system, such as figure 1As shown, it includes two organic fume hoods 1, two inorganic fume hoods 3, four organic exhaust arms 2, four inorganic exhaust hoods 4, spray acid removal device 5, dehumidification device 7, frequency conversion centrifugal fan 8 and activated carbon adsorption Each of the devices 9; each organic fume hood 1 and each organic exhaust arm 2 are connected in parallel with air ducts, and then connected to the dehumidification device 7; The tubes are connected in parallel, first connected in series with the spray deacidification device 5, and then connected with the dehumidification device 7, the dehumidification device 7, the frequency conversion centrifugal fan 8 and the activated carbon adsorption device 9 are connected in sequence.

[0039] The spray acid removal device 5 is only connected to the side of the inorganic waste gas. When the spray acid removal device 5 does not receive the sign...

experiment example 1

[0057] In this experimental example, the situation where only the inorganic exhaust hood and the inorganic fume hood are opened is simulated. Start the spray deacidification device and dehumidification device at the same time, open some inorganic fume hoods and exhaust hoods, manually open the spray deacidification device, and automatically open the dehumidification device, without touching the activated carbon adsorption device, and calculate the power requirements of the centrifugal fan.

[0058] This experiment is based on the working conditions of 2 inorganic laboratories with 1 fume hood and 2 inorganic exhaust hoods (that is, a total of 2 fume hoods and 4 inorganic exhaust hoods), where the diameter and length of the ventilation pipes are simply assumed: The air volume of the 1200L fume hood is 1500m3 / h, and the total air volume of the inorganic fume hood is 3000m 3 / h; the air volume of the inorganic exhaust hood is 600m 3 / h, the wind speed at the cover mouth is 2m 3...

experiment example 2

[0060] This experimental example simulates the situation where only the organic exhaust arm and the organic fume hood are opened, the dehumidification device is not turned on, and the activated carbon adsorption device is turned on, and the power requirement of the centrifugal fan is calculated.

[0061] According to the working conditions of 2 organic laboratories with 1 fume hood and 2 organic exhaust arms (that is, a total of 2 fume hoods and 4 organic exhaust arms work), the diameter and length of the ventilation pipe are simply assumed: fume hood 1200L exhaust air volume is 1500m 3 / h, the total air volume of the organic fume hood is 3000m 3 / h; the air volume of the organic exhaust arm is 600m 3 / h, the wind speed at the cover mouth is 2m 3 / h, the total air volume of the organic exhaust arm is 2400m 3 / h; the organic exhaust area uses a 500*400mm rectangular exhaust pipe with a total length of 30m and a wind speed of 8m / s, which meets the exhaust requirements; the re...

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Abstract

The invention discloses a laboratory waste gas exhausting system and a treatment method and relates to the field of waste gas treatment and laboratory design. The laboratory waste gas exhausting system comprises an organic fume hood or / and an inorganic fume hood or / and an organic ventilation arm or / and an inorganic ventilation cover, a spraying and acid removing device, a dehumidifying device, a variable frequency centrifugal draught fan and an activated carbon adsorption device, wherein the organic fume hood and the organic ventilation arm are connected to the dehumidifying device; after being connected with the spraying and acid removing device, the inorganic fume hood and the inorganic ventilation cover are connected with the dehumidifying device; the dehumidifying device, the variablefrequency centrifugal draught fan and the activated carbon adsorption device are connected in sequence. The whole device is simply integrated and the investment can be greatly saved when the device isused in a laboratory; the energy consumption can be effectively reduced, the adsorption period of activated carbon is improved and the life cycle of the activated carbon is prolonged.

Description

technical field [0001] The invention relates to the fields of waste gas treatment and laboratory design, in particular to a laboratory waste gas exhaust system and a treatment method. Background technique [0002] Various toxic and harmful gases will be produced during the experimental operation in the physical and chemical laboratory, such as strong corrosive gases such as strong acids common in inorganic laboratories, and flammable, explosive and toxic volatile organic solvents will be used in organic experiments or sample pretreatment, etc. . If these toxic and harmful gases are not treated scientifically and rationally, it will not only endanger the personal health of the experimenters, but also cause cross-contamination between different experiments, which will have a certain impact on the reliability of the experimental results. It may pollute the air environment and cause harm to the health of surrounding residents. Therefore, how to design a scientific, reasonable,...

Claims

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Application Information

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IPC IPC(8): B01D53/78B08B15/00B08B15/02
CPCB01D53/02B01D53/26B01D53/78B01D2257/708B01D2257/80B08B15/00B08B15/023
Inventor 张琪雨吴孟李吴攀
Owner GUANGDONG SANET TECH
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