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Pressure-bearing device with cooling function for supercritical water treatment

A supercritical water and pressure-bearing device technology, applied in the direction of oxidized water/sewage treatment, etc., can solve the problems of not being very reliable, sealing failure, no longer reliable, etc., to improve safety and reliability, avoid corrosion, and improve use The effect of longevity

Inactive Publication Date: 2009-11-04
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially under frequent alternation of cold and heat, the deformation of bolts will become uncontrollable, which will seriously affect the safety of pressure vessels
2. Seal failure: At high temperature, the mechanical seal becomes unreliable due to the thermal deformation of the pressure vessel
Due to the material problem of the elastic seal, it is difficult to play its due role at high temperature
The hard seal is not very reliable due to the reliability of installation and the tolerance to high temperature.

Method used

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  • Pressure-bearing device with cooling function for supercritical water treatment
  • Pressure-bearing device with cooling function for supercritical water treatment

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] see figure 1 , using a pressure-bearing device for supercritical water treatment with a cooling function of the present invention. The reactor comprises: a barrel body 1, an end cover 2 fixed on the barrel body 1 by bolts 3, a concave top cover 4 is welded on the lower surface of the end cover 2, and the lower surface of the concave top cover 4 and the end cover 2 A cooling cavity 5 is formed. The water inlets 6 of the cooling cavity 5 are opened on the end cover 2 and evenly distributed on the upper surface of the end cover 2 . The side wall of the concave top cover 4 is uniformly provided with spray holes 8, and an annular gap 7 is formed between the outer wall and the barrel body 1, and the cooling water is sprayed to the junction of the end cover 2 and the barrel body 1 through the spray holes. Inside barrel body 1, and flow out along slit 7, it...

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Abstract

The invention belongs to the field of supercritical water treatment of waste organic substances, and discloses a pressure-bearing device with cooling function for the supercritical water treatment. The device comprises a barrel body (1) and an end cover (2), and is characterized in that the lower surface of the end cover (2) is provided with a cooling cavity (5), the outer wall of the cooling cavity (5) and the inner wall of the barrel body (1) form an annular narrow slit (7), the lateral wall of the cooling cavity (5) is provided with a jet hole (8), and a water inlet (6) of the cooling cavity is arranged on the upper surface of the end cover (2).

Description

technical field [0001] The invention belongs to the field of supercritical water treatment of waste organic matter, in particular to a pressure-bearing device for supercritical water treatment with a cooling function. Background technique [0002] Water is equivalent to a non-polar solvent in a supercritical state, and can be miscible with air, oxygen and organic matter in any proportion, thus forming a homogeneous environment. At this time, the gas-liquid phase interface disappears, which eliminates the mass transfer resistance between the phases, and the reaction speed of the dissolved substances is no longer affected by the mass transfer. At the same time, a higher reaction temperature (about 400-650° C.) also speeds up the reaction rate. [0003] In recent years, supercritical water oxidation technology (Supercritical Water Oxidation, referred to as SCWO) has become a very advantageous treatment technology for waste organic matter that has received high attention. It i...

Claims

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Application Information

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IPC IPC(8): C02F1/72
Inventor 王树众张宏胡昕徐煜徐东海公彦猛
Owner XI AN JIAOTONG UNIV
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