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Treatment process of volatile organic waste gases

A volatile organic and waste gas treatment technology, applied in gas treatment, air quality improvement, membrane technology and other directions, can solve the problems of low purification efficiency, high investment cost, poor pertinence, etc., to achieve cost saving, low cost, suitable for wide range of effects

Active Publication Date: 2018-02-06
SINOPEC NINGBO ENG +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an organic waste gas treatment process that can simultaneously treat multiple pollutants in order to solve the problem of poor pertinence, high investment costs, low safety, A series of problems such as poor stability, high energy consumption, expensive absorption solvent, and low purification efficiency

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  • Treatment process of volatile organic waste gases

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Embodiment Construction

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] First, high-concentration volatile organic waste gases from structures such as waste water inlets, grease traps, flotation tanks, homogeneous tanks, and waste oil tanks, including sulfides, halides, ammonia nitrogen, olefins, aromatics, alkanes, and phenols After being scattered and collected by a closed gas collection hood, it is transported to a high-concentration waste gas treatment device by a pipeline.

[0041] Such as figure 1 As shown, under the suction of the blower 1, the temperature from the total waste water inlet, grease trap, flotation tank, homogeneous tank, sewage tank and other structures is high concentration of 25 ~ 30 ℃, pressure -20 ~ -10KPaG Volatile organic waste gas, the flow rate is 3000~6000m 3 / h, the sulfide concentration is tens to hundreds of milligrams per cubic meter, and the total hydrocarbon concentrat...

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Abstract

The invention relates to a treatment process of volatile organic waste gases. The treatment process is characterized in that high-concentration volatile organic waste gases enter an absorbing tower and are contacted with spraying alkali liquor for primary washing, and after a gas phase is discharged, the waste gases is mixed with first stream of liquid phase and enter an alkali liquor tank for secondary washing; the washed gas phase is conveyed to a thermal oxidation furnace for treatment; low-concentration volatile organic waste gases enter a biological trickling filter for washing, then thegas phase rises to enter a first filler layer, and after adsorption of the filler layer, the gas phase enters a biological filtering pond for washing and then enters a dehumidifier; after dehumidification, a part of gas phase is conveyed into an oxidation furnace, another part of gas phase enters an active-carbon adsorbing tower, and after being adsorbed to reach the standard, the gas phase can beemptied.

Description

technical field [0001] The invention relates to the treatment of industrial pollutants, in particular to the treatment process of volatile organic waste gas VOCs. Background technique [0002] As a characteristic pollutant in the petrochemical industry, VOCs mainly come from organized emissions, unorganized emissions from storage tanks, leakage from production equipment, volatilization during wastewater treatment, process emissions, and solvent volatilization, etc. Among them, wastewater collection, transportation and treatment systems are important. source of emission. In the process of wastewater treatment, due to the VOCs concentration gradient difference between the gas and liquid phases, the influence of changes in ambient temperature and pressure, and the aeration treatment process, most of the volatile organic compounds escape from the wastewater and are discharged in the form of fugitive emissions. way into the atmospheric environment, bringing a series of safety, e...

Claims

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Application Information

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IPC IPC(8): B01D53/44B01D53/78B01D53/18B01D53/84B01D53/04B01D53/75
CPCB01D53/0454B01D53/185B01D53/44B01D53/75B01D53/78B01D53/84B01D2251/604B01D2251/95B01D2257/30B01D2257/406B01D2258/02Y02A50/20
Inventor 夏兰生黄剑平许仁春
Owner SINOPEC NINGBO ENG
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