Gas-liquid circulation flow reactor and method for treating odorous waste gas containing hydrocarbons

A loop reactor and reactor technology, applied in the direction of chemical instruments and methods, separation methods, and dispersed particle separation, can solve the problems of loop reactors that cannot realize functions, narrow gas volume application range, and decreased mass transfer efficiency, etc., and eliminate Liquid surface disturbance phenomenon, high absorption efficiency, space-saving effect

Active Publication Date: 2013-08-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patents of the above-mentioned loop reactors can be used for gas-liquid reactions, but there are certain defects in the treatment of sulfide-containing waste gas in oil refineries. When the above-mentioned reactors process waste gas under the condition of fluctuating gas volume, the bubbles merge into large bubbles, and the mass transfer efficiency The problem of the drop is that the scope of application of the gas volume is narrow. In addition, the exhaust gas of oil refineries generally contains hydrocarbons, water, etc., which are easily condensed into liquids during gas-liquid reactions, and need to be discharged regularly
The above-mentioned loop reactor cannot realize these functions

Method used

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  • Gas-liquid circulation flow reactor and method for treating odorous waste gas containing hydrocarbons
  • Gas-liquid circulation flow reactor and method for treating odorous waste gas containing hydrocarbons
  • Gas-liquid circulation flow reactor and method for treating odorous waste gas containing hydrocarbons

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The composition of the main odor pollutants in the exhaust gas emitted by the acidic water storage tank of an enterprise is shown in Table 1, and the pressure is normal pressure. The circular flow reactor of the present invention is used for desulfurization treatment. The circular cover plate in the purification device is a screen with an aperture of 2mm, which is located at the variable diameter part of the upper part of the inner cylinder. The sodium hydroxide aqueous solution is used as the absorption liquid, and a trace amount of manganese sulfate is added to the absorption liquid. The added amount of manganese element meter is 30 μg / g, and when the pH value of the solution drops to 9, fresh lye is added and replaced. The packed tower is filled with Dg50 plastic Pall rings, and the average exhaust gas volume space velocity is 1000h -1 , the concentrations of various components in the exhaust gas are shown in Table 1, in which the hydrogen sulfide and organic sulfide...

Embodiment 2

[0037] The concentration of hydrocarbon-containing waste gas produced by a sweetening device is 30% (v / v), and the pressure is 1 atm. It is processed by the loop reactor of the present invention, diesel oil is used as the absorbent, the distillation range is 200-360 ° C, and the temperature is 15-20 ° C. The oil product absorbent enters from the liquid inlet 12 of the loop reactor and is discharged from the liquid outlet 11, and the diesel oil flows continuously. The circular cover plate in the reactor is a screen with a pore size of 10 mm, which is located at the upper part of the inner cylinder at the variable diameter; the connection method between the inner cylinder and the base is figure 2 In the manner shown, after purification, the hydrocarbon waste gas concentration is reduced to 1% (v / v), and the hydrocarbon recovery rate can reach 96.7%.

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Abstract

The invention discloses a gas-liquid circulation flow reactor, which comprises an outer cylinder and an inner cylinder, wherein the inner cylinder is arranged in the outer cylinder, an inner cylinder mounting base is arranged on the bottom part of the outer cylinder, the inner cylinder is arranged at the bottom part of the outer cylinder in a movable connection mode, the lower part of the inner cylinder is provided with a gas distributor, an air duct is connected with an air distributor by a flange, the air duct is embedded and fixed in the wall of the inner cylinder by a flange, a flange hole connected with the distributor is threaded, and the distributor and the air duct are connected by a bolt from the outer side of the inner cylinder; and the upper part of the inner cylinder is a buffering section with a cover plate, the buffering section has a cylindrical structure with an enlarged diameter, a flow guide hole is formed on the side wall of the cylindrical structure of the buffering section, and the section, blow the air distributor, of the inner cylinder or the base is provided with a liquid flow channel. The gas-liquid circulation flow reactor disclosed by the invention is small in gas liquid interference, can keep the stability of the liquid level in the outer cylinder effectively and contributes to the discharge of incompatible liquid phases or impurities. Meanwhile, the gas-liquid circulation flow reactor has the advantage of convenience for overhaul, simple structure, small floor area, capability of contribution to prolonging the service life of the reactor.

Description

technical field [0001] The invention relates to a gas-liquid reaction device and a method for treating odorous waste gas containing hydrocarbons, which can be used in the field of liquid absorbing gas, especially a purification device for odorous waste gases containing sulfide, ammonia, VOC, etc., and a treatment method for odorous waste gases containing hydrocarbons. Background technique [0002] In oil refining, chemical and other enterprises, there are many production units or facilities that will produce foul-smelling exhaust gas, which has become an important source of pollution for such enterprises. Odor pollution sources in oil refining and chemical enterprises mainly include volatilization of storage tanks, escape of sewage treatment systems, and exhaust emissions from oil refining units. The composition and concentration of the malodorous exhaust gas vary greatly with the different pollution sources, and there are great changes with the change of operating condition...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B01D53/18B01D53/14
Inventor郭兵兵王海波朴勇刘忠生刘璐
OwnerCHINA PETROLEUM & CHEM CORP