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Volatile organic waste gas treatment process

A volatile organic and waste gas treatment technology, applied in the field of industrial pollutant treatment, can solve the problems of expensive absorption solvent, poor pertinence and high investment cost, and achieve the effect of wide application, low cost and cost saving.

Active Publication Date: 2021-05-07
SINOPEC NINGBO ENG +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Volatile organic waste gas treatment process

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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] like 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 3000-6000 m 3 / h, the sulfide concentration is tens to hundreds of milligrams per cubic meter, and the total hydrocarbon concentratio...

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Abstract

The invention relates to a volatile organic waste gas treatment process, which is characterized in that the high-concentration volatile organic waste gas enters the absorption tower and contacts with the spray lye for the first washing, and after the gas phase is discharged, it is mixed with the first liquid phase and enters the lye tank Carry out secondary washing; the gas phase after washing is sent to the thermal oxidation furnace for treatment; after the low-concentration volatile organic waste gas enters the biological trickling filter for washing, the gas phase rises into the first packing layer, and after the packing layer is adsorbed, the gas phase enters the biological filter for washing After that, it enters the dehumidifier, and part of the dehumidified gas phase is sent to the oxidation furnace, and part of it enters the activated carbon adsorption tower, and is released after the adsorption reaches the standard.

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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Patent Type & Authority Patents(China)
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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