Corrosion-resisting clogging-proof overcritical water oxidization reactor

A supercritical water oxidation and reactor technology, which is applied in the oxidation water/sewage treatment and other directions, can solve the problems of accidents, decreased heat transfer efficiency, reactor or pipeline blockage, etc., and achieves convenient production, disassembly and assembly, and simple structure. , to ensure the effect of stable and safe operation

Inactive Publication Date: 2008-04-23
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low solubility of inorganic substances under supercritical conditions, the precipitation of salt during the oxidation process will cause blockage of reactors or pipelines, resulting in a sharp drop in heat transfer efficiency and even accidents.

Method used

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  • Corrosion-resisting clogging-proof overcritical water oxidization reactor
  • Corrosion-resisting clogging-proof overcritical water oxidization reactor

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Embodiment Construction

[0026] A specific embodiment of the present invention is given below in conjunction with each accompanying drawing.

[0027]The reactor in Fig. 1 is an inner and outer double cylinder structure, 2 is the outer cylinder of the reactor, and 4 is the inner cylinder of the reactor. The outer cylinder cover 19 and the inner cylinder upper cover 21 are fixedly connected as a whole through the bracket 20, and the inlet and outlet pipelines 13, 14, 15, 16 and the temperature measuring envelope 24 are directly welded on the inner cylinder upper cover and the outer cylinder cover. An oxygen inlet pipe 15 and a liquid inlet pipe 16 of a casing structure are arranged at the central line of the reactor, and a nozzle device 10 is added at the bottom of the casing. The gas product outlet pipe 13 and the liquid product outlet pipe 14 also adopt a casing structure. The liquid product outlet pipe 14 and the temperature measuring jacket 24 are respectively inserted into the bottom of the reacto...

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Abstract

This invention relates to a corrosion-resistance and blocking-resistance supercritical water oxidation reactor. It is composed of: a casing, a water inlet, a jacketed supporting ring and a spring ring, an annular water entrance and a water dash plate, inner cylinder of the reactor, raw material feeder, nozzle, an outlet of reactant and multi-point optical fiber online thermo-detector. In said reactor, there are a process water jacket area, supercritical water oxidation area, a sub-critical water area for dissolving inorganic salts on the bottom of the inner cylinder of the reactor. The process water jacket area is divided into two or more than two layer area by the supporting ring and the spring ring. The water, after removing oxygen and removing salts, passes through porous-wall structure enters the reaction area and forming a protective water membrance over the inner wall of the reactor. The temperature sensor and optical fiber are placed in a sleeve which is placed near the central line of the reactor. Advantages are: easy to be maintained, safety operation.

Description

technical field [0001] The invention belongs to the fields of environmental protection and chemical industry, and in particular relates to a corrosion-resistant and anti-clogging supercritical water oxidation reactor. Background technique [0002] Supercritical Water Oxidation (SCWO) technology uses supercritical water as the medium to oxidize organic matter. When the water reaches the critical point, that is, the temperature is 374°C and the pressure is above 22.05MPa, it will reach the supercritical state. The water in the supercritical state has different physical and chemical properties from the normal water. Supercritical water has a liquid-like density, solvency and good fluidity, as well as a gas-like diffusion coefficient and low viscosity. In supercritical water, the gas-liquid two-phase interface disappears, forming a homogeneous phase system, and the reaction speed is greatly accelerated. Organic matter and oxygen and other gases are completely miscible in super...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
Inventor 马春元陈守燕陈桂芳衣宝葵张家明
Owner SHANDONG UNIV
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