Microwave fluidization reaction device and method for processing benzol and derivatives of benzol

A technology of fluidized reaction and derivatives, which is applied in the field of microwave fluidized reaction devices, can solve the problems that no treatment methods for benzene and benzene derivatives have been proposed, and achieve the requirements of not harsh reaction conditions, simple overall operation, and high removal rate Effect

Active Publication Date: 2015-06-17
BEIJING WANBANGDA ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no treatment method for benzene and benzene derivatives is proposed in the two patent documents

Method used

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  • Microwave fluidization reaction device and method for processing benzol and derivatives of benzol

Examples

Experimental program
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Effect test

Embodiment 1

[0058] The first embodiment is to use the microwave fluidization reaction device to treat fine chemical wastewater. The main pollutants in the wastewater are phenol, xylene, m-diphenol, o-toluene and other substances containing benzene rings. The treatment method is through the following process steps:

[0059] Adjust the pH of the sewage to 2, enter the microwave reaction fluidization device through the water inlet, add 500mg / l sodium hypochlorite and 25mg / l ferric chloride, the residence time in the microwave reaction fluidization device is 40min, and the effluent passes through the lime The milk was adjusted to pH8. The COD value of the raw water after treatment (English name is Chemical Oxygen Demand, Chinese name is Chemical Oxygen Demand) has dropped from 520mg / l to 60.3mg / l, the removal rate of phenol is 98%, the removal rate of xylene is 95%, m-di The removal rate of phenol reaches 94%, and the removal rate of o-toluene reaches 91%.

Embodiment 2

[0061] The second embodiment of this example is to use the microwave fluidization reaction device to treat the biochemical effluent of coking wastewater. The main pollutants in the wastewater are benzene ring substances such as 2,5-di-tert-butylphenol and dibutyl phthalate. The treatment method Through the following process steps:

[0062] Adjust the pH of the sewage to 1.8, enter the microwave reaction fluidization device through the water inlet, add 300mg / l hydrogen peroxide, the residence time in the microwave reaction fluidization device is 60min, and adjust the pH of the effluent to 7.5 through lime milk. After the treatment, the COD value of the raw water was reduced from 240 mg / l to 58 mg / l, the removal rate of 2,5-di-tert-butylphenol was 98%, and the removal rate of dibutyl phthalate was 83%.

Embodiment 3

[0064] The third example is to use the microwave fluidization reaction device to treat the biochemical effluent of landfill leachate. The main pollutants in the waste water are 2,4-bis(1,1-dimethylethyl)phenol, phenol, phenyl ketone, 2,5-dihydromethylaniline, 4-methoxy-3-methylphenol, N-butylbenzenesulfonamide and other substances, the treatment method goes through the following process steps:

[0065] Adjust the pH of the sewage to 1, enter the microwave reaction fluidization device through the water inlet, add 240mg / l hydrogen peroxide and 100mg / l potassium permanganate, the residence time in the microwave reaction fluidization device is 15min, and the effluent Adjust to pH9 by milk of lime. The COD value of raw water after treatment decreased from 890mg / l to 91mg / l, of which the removal rate of phenyl ketone was 93%, the removal rate of 2,5-dihydromethylaniline was 98%, and the removal rate of 4-methoxy-3- The removal rate of methylphenol is 91%, and the removal rate of N-...

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Abstract

The invention relates to the technical field of water treatment, and particularly relates to a microwave fluidization reaction device and a method for processing benzol and derivatives of benzol. The microwave fluidization reaction device comprises a microwave resonant cavity, a fluidization reaction body, a solid-liquid separation system and a stirrer, wherein the fluidization reaction body is arranged inside the microwave resonant cavity; fluidization reaction carriers are arranged inside the fluidization reaction body; the solid-liquid separation system is connected with the fluidization reaction body; a water inlet and a water outlet are both formed in the solid-liquid separation system; a pushing paddle is arranged on the stirrer; one end of the pushing paddle penetrates through the solid-liquid separation system and stretches into the fluidization reaction body. As a microwave environment is provided through the microwave resonant cavity, the reaction carriers and a liquid sufficiently contact microwaves inside the fluidization reaction body, and moreover solid-liquid separation is effectively achieved through the solid-liquid separation system, the microwave fluidization reaction device is simple in overall operation and can be operated continuously.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a microwave fluidization reaction device and a method for treating benzene and its derivatives. Background technique [0002] Microwave refers to electromagnetic waves with a frequency of 0.3GHz to 300GHz. It is an abbreviation for a limited frequency band in radio waves, that is, electromagnetic waves with a wavelength between 1 mm and 1 meter. The energy is between infrared and radio waves, and the energy is small enough to change. The migration of microscopic ions and the rotation of dipoles are large enough to cause changes in molecular structure, which is a kind of non-ionizing radiation energy. [0003] Microwave is an electromagnetic wave composed of an electric field and a magnetic field. The electric field in the microwave acts on the microscopic particles in the material to polarize them and migrate or rotate. The effect of microwaves on substances varies accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/12B01J8/24C02F1/30C02F1/02C02F1/72C02F101/32
Inventor 胡德録陆宇晖彭建雄宋锦兰
Owner BEIJING WANBANGDA ENVIRONMENTAL PROTECTION TECH
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