Reactor for treating supercritical water of waste organism

A technology of supercritical water and organic matter, which is applied in the fields of solid waste removal, heating water/sewage treatment, oxidized water/sewage treatment, etc. It can solve problems such as strong corrosion of equipment, blockage of reactors, and stress reduction of reactor walls. , to achieve the effect of delaying the corrosion rate, lowering the temperature and preventing the deposition of salt

Inactive Publication Date: 2009-10-21
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
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Problems solved by technology

Because the supercritical water treatment reactor of waste organic matter is under high temperature and high pressure conditions, especially the waste organic matter contains halogen, sulfur or phosphorus, which will produce acid after decomposing in supercritical water, causing strong corrosion of equipment; even with better corrosion resistance Ni-based materials with high corrosion resistance still suffer from severe corrosion in supercritical water, especially in subcritical water
[0008] (2) Salt deposition problem
Most salts have very low solubility in low-density supercritical water (typically 1-100m

Method used

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  • Reactor for treating supercritical water of waste organism

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Embodiment Construction

[0021] see figure 1 , The reactor for supercritical water treatment of waste organic matter of the present invention includes: a pressure chamber 2 and an inner chamber 1 composed of an evaporation wall. The inner chamber 1 of the reactor is fixed in the pressure chamber 2 by the bracket 3 , and a space is reserved between the pressure chamber 2 and the inner chamber 1 . The material inlet pipe 4 is located at the uppermost end of the reactor, and extends into the inner chamber 1 after passing through the top of the pressure chamber 2 . The overflow pipe 5 is located at the upper part of the reactor, and passes through the top of the pressure chamber 2 and extends into the interior of the inner chamber 1 for the outflow of the reacted material. The water inlet pipe 7 for evaporating wall water is located on the upper part of the side wall of the pressure chamber 2, extends into the gap between the pressure chamber 2 and the inner chamber 1, and provides evaporating wall water...

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Abstract

The invention belongs to the field of treatment of waste organism, relates to supercritical water treatment of waste organism and discloses a reactor for treating supercritical water of waste organism; the reactor comprises a pressure-bearing chamber (2), an inner chamber (1) which is arranged in the pressure-bearing chamber (2) and composed of evaporation walls, a material feed pipe (4) and an overflow pipe (5) which run through the top part of the pressure-bearing chamber (2) and extend into the inner chamber (1), a salt outlet pipe which runs through the top part of the pressure-bearing chamber (2) and extend into the inner chamber (1); wherein, gaps are reserved between the inner chamber (1) and the pressure-bearing chamber (2), and the inner chamber (1) is provided with a water inlet pipe (7) for evaporating wall water.

Description

technical field [0001] The invention belongs to the field of organic matter treatment, and relates to supercritical water treatment of waste organic matter, in particular to a reactor for supercritical water treatment of waste organic matter. Background technique [0002] Supercritical Water (SCW for short) refers to water in a special state whose temperature and pressure are both higher than its critical point (T=374.15°C, P=22.12MPa). Supercritical water has the properties of both liquid and gaseous water. In this state, only a small amount of hydrogen bonds exist. The dielectric constant is similar to that of polar organic solvents. It has a high diffusion coefficient and low viscosity. At sufficiently high pressure, SCW is miscible with air, oxygen, and organics in any proportion to form a homogeneous phase. 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 s...

Claims

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Application Information

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IPC IPC(8): C02F9/10B09B3/00C02F1/04C02F1/72
Inventor 王树众胡昕徐东海公彦猛郭洋马红和
Owner XI AN JIAOTONG UNIV
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