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Pressure type microwave reactor

A microwave reaction and pressure technology, applied in the field of pressure vessels, can solve the problems of cumbersome operation, difficult production, and structural feature determination, etc., and achieves the effects of wide application, fast heating speed, and reduction of heat loss.

Inactive Publication Date: 2008-02-27
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It works by placing a small airtight pressure vessel in a microwave oven. Its disadvantages are that (1) the material is not made of metal, but made of glass, and its maximum working pressure is only 1.1-1.4MPa. It is subject to certain restrictions in terms of pressure; (2) the pressure vessel must be moved into and out of the microwave oven as a whole before and after the operation, and the operation is cumbersome; (3) due to its structural characteristics, it can only be used on small equipment It is more difficult to carry out work, such as expanding its proportion and implementing industrial production

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Experimental program
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Effect test

Embodiment 1

[0032] For the development and experiment of the present invention, a set of small-scale experimental equipment is specially designed. The factory design pressure is 5MPa and the design temperature is 250°C. The size is a rectangle of 90×45mm, the size of the circular quartz glass is Φ120×18mm, the stage 14 is a 500ml experimental beaker, and the liquid carrier 13 is a plastic beaker of Φ110×40mm.

[0033] Using the above-mentioned experimental device, taking heating water to 160°C as an example, the operation details of this device will be further explained. The operation steps are as follows:

[0034] Preparation

[0035] First, adjust the knob on the automatic pressure relief solenoid valve 23 to the working pressure of 0.7MPa, (at 160°C, the saturated vapor pressure of water is 0.61MPa) the working pressure must be greater than the saturated vapor pressure at this temperature;

[0036] Secondly, turn on the switch on the reactor controller 2 to preheat the jacket 15 to 50...

Embodiment 2

[0045] xx oil refinery production wastewater treatment

[0046] The distillation wastewater retrieved from the xx refinery has a small amount of impurities in the water, which is relatively transparent but has a strong pungent smell. The purpose of the treatment is to degrade the COD of the refinery wastewater by using microwaves and implementing high temperature and pressure in the reactor. The specific implementation steps are as follows:

[0047] Preparation

[0048] First of all, sampling analysis, using the potassium dichromate method to measure the COD value of the water sample, the COD content is about 5000mg / L;

[0049] Next, turn on the switch on the reactor controller 2 to preheat the jacket 15 to 50°C to 60°C;

[0050] Then, the selection of parameters: microwave input power 660w, treatment water volume 400ml, reaction temperature 200°C, pressure upper limit 1.6MPa, residence time 10 minutes, activated carbon catalyst is selected, and the dosage is 4% of the water...

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Abstract

A pressure-type microwave reactor system is composed of a microwave generator, a waveguide tube with rectangular flange and quartz glass window, a cylindrical microwave reactor with external jacket made of stainless steel, enclosing head, internal high-pressure wall and insulating layer, controller for microwave reactor, hydraulic water pump and high-pressure gas cylinder.

Description

technical field [0001] The invention relates to a novel device combining microwave electromagnetic energy transmission technology and pressure vessel technology. The device can be used for processing and testing microwave-absorbing materials under high temperature and high pressure conditions, and belongs to the field of pressure vessels. Background technique [0002] Microwave is known as one of the greatest inventions of the 20th century. Compared with traditional conduction heating, microwave has the characteristics of fast heating speed, high thermal efficiency (about 80%), uniform heating, and temperature diffusion from the inside of the object. Microwaves are electromagnetic waves like radio waves, infrared rays, and visible light. Microwaves refer to electromagnetic waves with a frequency of 300MHz-300KMHz, that is, electromagnetic waves with a wavelength of 1 meter to 1 millimeter. When microwave encounters different materials in the transmission process, it will pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/12B01J3/04
Inventor 全燮孙勇张耀斌赵雅芝
Owner DALIAN UNIV OF TECH