Device and method used for skid mounted module type processing of VOCs exhaust gas

A modular waste gas technology, applied in separation methods, gas treatment, chemical instruments and methods, etc., can solve the problems of low treatment efficiency, incomplete treatment, high cost, etc., achieve simple operation and maintenance, convenient vehicle transportation, and improve utilization rate Effect

Pending Publication Date: 2019-02-01
CNOOC ENERGY TECH & SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing VOCs treatment technologies include recovery technologies such as condensation and adsorption, and destruction technologies such as incineration and photolysis. However, a single treatment technology often has problems such as insufficient treatment, low treatment efficiency, high cost, and secondary pollution.
[0004] In addition, most of the existing processing devices are complex in structure, expensive in cost, and fixed installations cannot be moved. For some non-continuous processes, temporary devices, and pollution sources caused by emergencies, they cannot meet the immediate needs

Method used

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  • Device and method used for skid mounted module type processing of VOCs exhaust gas
  • Device and method used for skid mounted module type processing of VOCs exhaust gas
  • Device and method used for skid mounted module type processing of VOCs exhaust gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Embodiment 1: Treating a certain medium-to-high concentration tail gas containing pollutants benzene, toluene, xylene, hydrogen sulfide, ammonia and methyl mercaptan, the gas flow rate is 2500Nm 3 / h; Spray treatment with lye diluted with 5% NaOH, the temperature of the spray chamber is normal temperature (25°C), and the normal pressure operation, the tail gas after spraying is passed into the biological trickling filter treatment device (the biological strain is the existing There are mature products), enter the adsorption device after biochemical treatment, the temperature of the adsorption device is 25°C, the adsorption pressure is 110KPa, and it is filled with ordinary activated carbon (the activated carbon filtration wind speed is 0.35m / s, the effective residence time of the gas in the activated carbon is 0.6s, and the iodine value of the activated carbon is 800m / s g, moisture content 2%, specific surface area 750m 2 / g, hole density 100 holes / m 2 , true specific ...

Embodiment 2

[0080] Embodiment 2: Treat a tail gas with a pollutant concentration of about 1%, and the gas flow rate is 2500Nm 3 / h; do pre-spray treatment with lye diluted with 5% NaOH, the temperature of the spray chamber is normal temperature (25°C), and the normal pressure operation, the tail gas after spraying is passed into the biological trickling filter treatment device (biological strain It is an existing mature product), after biochemical treatment, it enters the left and right chambers of the improved adsorption device of this patent. The effective residence time of activated carbon is 1.15s, the iodine value of activated carbon is 1000m / g, the moisture content is 1%, and the specific surface area is 1000m 2 / g, hole density 200 holes / m 2 , true specific gravity 2g / cm 3 , bulk specific gravity 0.4g / cm 3 ), the resulting process results are shown in Table 2:

[0081] Table 2 process results

[0082]

[0083] This example is a comparative example, which adopts the existing...

Embodiment 3

[0084] Embodiment 3: Treat a tail gas with a pollutant concentration of about 1%, and the gas flow rate is 5000Nm 3 / h; do pre-spray treatment with lye diluted with 5% NaOH, the temperature of the spray chamber is 15°C, the pressure is 101Kpa, and the tail gas after spraying is passed into the ultraviolet lamp catalytic oxidation device (30 ultraviolet light tubes are filled, 150W / piece), after being catalyzed by ultraviolet light, it is passed into the left and right chambers of the adsorption device. The temperature of the adsorption device is 15°C, the adsorption pressure is 101KPa, and it is filled with high-performance improved activated carbon (the wind speed of activated carbon filtration is 0.26m / s, and the gas is effective in activated carbon. The residence time is 1.15s, the iodine value of activated carbon is 1000m / g, the moisture content is 1%, and the specific surface area is 1000m 2 / g, hole density 200 holes / m 2 , true specific gravity 2g / cm 3 , bulk specific ...

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Abstract

The invention belongs to the field of VOCs exhaust gas processing, and especially relates to a device and a method used for skid mounted module type processing of VOCs exhaust gas. The device comprises a pre-processing spray device, an ultraviolet lamp catalytic device, an adsorption device, a condenser, and a circulation water tank; exhaust gas is delivered through the pre-processing spray device, the ultraviolet lamp catalytic device, and the adsorption device successively; a multi-spherical filling material is introduced into the pre-processing spray device. According to the method, the spray pre-processing, ultraviolet light catalysis, and adsorption technology are combined, after spray, ultraviolet light catalysis, and adsorption processing, VOCs removing efficiency is higher than 95%, and the device and the method are suitable for processing of VOCs exhaust gas of high or low concentration; the application range is wide; operation and maintenance are simple; the method is safe; and operation cost is low.

Description

technical field [0001] The invention belongs to the field of treating VOCs waste gas, and in particular relates to a skid-mounted modular device and method for treating VOCs waste gas. Background technique [0002] Existing techniques and drawbacks: [0003] VOCs (Volatile Organic Compounds, Volatile Organic Compounds) are highly volatile, irritating, special-smelling, and toxic organic gases that can form photochemical smog to destroy the ozone layer and have great harm to the environment; in addition, VOCs can also inhibit the human body The central nervous system has certain carcinogenicity. Petroleum, chemical, automobile, printing and dyeing, electronics, metallurgy and other industries can produce volatile organic compounds. Existing VOCs treatment technologies include recovery technologies such as condensation and adsorption, and destruction technologies such as incineration and photolysis. However, a single treatment technology often has problems such as insufficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/44
CPCB01D53/04B01D53/18B01D53/8687B01D2255/802B01D2257/708B01D2259/4009B01D2259/804Y02A50/20
Inventor 邢传胜邓海发高翔肖峰孟庭宇王海琛
Owner CNOOC ENERGY TECH & SERVICES
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