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A supercritical water oxidation reactor, supercritical water oxidation system and method

A supercritical water oxidation and reactor technology, applied in chemical instruments and methods, methods of chemically changing substances by using atmospheric pressure, pressure vessels used in chemical processes, etc. Corrosive, reducing the risk of being susceptible to corrosion

Active Publication Date: 2020-02-07
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a supercritical water oxidation reactor, supercritical water oxidation system and method, through layered design, can solve the problem caused by the supercritical water oxidation reactor needs to meet high temperature and high pressure resistance and corrosion resistance at the same time The problem of difficult material selection and the clogging problem of the supercritical water oxidation reactor can prolong the service life of the supercritical water oxidation reactor and improve the stability of the system operation

Method used

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  • A supercritical water oxidation reactor, supercritical water oxidation system and method
  • A supercritical water oxidation reactor, supercritical water oxidation system and method
  • A supercritical water oxidation reactor, supercritical water oxidation system and method

Examples

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Embodiment 1

[0113] In embodiment 1, to adopt such as Figure 7 The shown supercritical water oxidation system is used as an example to illustrate the supercritical water oxidation treatment of municipal sludge.

[0114] The municipal sludge with a concentration of 13% is stored in the raw material storage tank 021, and after being pressurized by the raw material pump 022 (the pressure reaches 23MPa), it is transported to the raw material preheater 04 for preheating to 120°C, and the preheated raw material enters In the heat exchange tube 4, the temperature of the raw material is preheated again to reach 225°C and enters the reaction zone A through the feed nozzle 8. At the same time, the liquid oxygen in the liquid oxygen storage tank 031 is pressurized by the liquid oxygen pump 032 After that, it is transported to the liquid oxygen evaporator 033, where it is vaporized into oxygen after heat exchange with hot water and enters the reaction zone A through the feed nozzle 8 to mix with the ...

Embodiment 2

[0116] In embodiment 2, to adopt such as Figure 8 The shown supercritical water oxidation system is used as an example to illustrate the supercritical water oxidation treatment of pharmaceutical wastewater.

[0117] The pharmaceutical wastewater is stored in the raw material storage tank 021, and is pressurized by the raw material pump 022 (the pressure reaches 24MPa), and then sent to the raw material preheater 04 for preheating to 115°C. The preheated raw material enters the heat exchange tube 4, After preheating again, the temperature of the raw material reaches 230°C, and enters the reaction zone A through the feed nozzle 8; at the same time, the liquid oxygen in the liquid oxygen storage tank 031 is pressurized by the liquid oxygen pump 032 and then transported to the liquid oxygen evaporator 033 , is gasified into oxygen after heat exchange with hot water and enters the reaction zone A through the feed nozzle 8 to mix with the raw material in the reaction zone A and und...

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Abstract

The invention relates to the technical field of supercritical water oxidation, in particular to a supercritical water oxidation reactor, a supercritical water oxidation system and a supercritical water oxidation method. The problem that the materials are difficult to select because the supercritical oxidation reactor needs to meet high-temperature and high-pressure resistance and corrosion resistance is solved, the problem of blockage of the supercritical water oxidation reactor is solved, the service life of the supercritical water oxidation reaction can be prolonged, and the operation stability of the system is improved. The supercritical water oxidation reactor comprises an outer wall, an inner cylinder and a partition wall arranged between the outer wall and the inner cylinder; an areasurrounded by the inner cylinder is a reaction area; a slag discharge port is formed at the bottom of the outer wall; an area between the reaction area and the slag discharge port is a chilling area;the inner cylinder and the partition wall enclose to form a first heat exchange interlayer communicated with the reaction area; the partition wall and the outer wall enclose to form a second heat exchange interlayer communicated with the chilling area; and a product outlet is formed in the first heat exchange interlayer.

Description

technical field [0001] The invention relates to the technical field of supercritical water oxidation, in particular to a supercritical water oxidation reactor, a supercritical water oxidation system and a method. Background technique [0002] The so-called supercritical water refers to water when the air pressure and temperature reach a certain value, the density of water expanded due to high temperature is exactly the same as the density of water vapor compressed due to high pressure. That is, when water is in the state of high temperature and high pressure of its critical point (374.3°C, 22.05MPa), it is called supercritical water (Supercritical Water, referred to as SCW). Under this condition, water has many unique properties. Non-polar organic substances such as hydrocarbons can be completely miscible with supercritical water like polar organic substances. Oxygen, nitrogen, carbon monoxide, carbon dioxide and other gases can also be dissolved in supercritical water in an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J3/04B01J3/02
CPCB01J3/02B01J3/048
Inventor 王青赵晓程乐明周秋香
Owner ENN SCI & TECH DEV