Supercritical water treatment reactor for organic wastes

Abstract

The invention discloses a supercritical water treatment reactor for organic wastes, which comprises a pressure bearing wall connected on a pedestal, an erosion resistance wall is arranged in the pressure bearing wall, and an interlayer used for filling cooling water is formed between the pressure bearing wall and the erosion resistance wall; an insulated heat conducting wall with electric heating wires is arranged in the erosion resistance wall, and an annular catalyst box is arranged in an annular cavity formed between the erosion resistance wall and the insulated heat conducting wall; a hydrocyclone is arranged in the insulated heat conducting wall, the bottom part of the hydrocyclone is passed through the centre of a reactor pedestal to form a strong brine outlet, and the top part thereof is passed through the upper end face of the insulated heat conducting wall to form an overflow opening; a fluid inlet is arranged on the pedestal, and a hydrocyclone inlet is arranged in the radial tangent direction on the upper part of the hydrocyclone; a fluid outlet is arranged on the pedestal situated between the insulated heat conducting wall and the erosion resistance wall; a cooling water inlet is arranged on the reactor pedestal situated between the pressure bearing wall and the erosion resistance wall; and a cooling water outlet is arranged on the top part of the pressure bearing wall of the reactor.

Description

technical field

[0001] The invention relates to a supercritical water treatment device for waste organic matter, in particular to a reaction device for supercritical water treatment of waste organic matter. Background technique

[0002] Supercritical water refers to water in a special state where both temperature and pressure are higher than its critical point (T=374.15°C, P=22.12MPa). Compared with liquid water, only a small amount of hydrogen bonds exist in this state, and the dielectric constant is similar to that of polar organic solvents. It has high diffusion coefficient, low viscosity, and good transport performance. Under a sufficiently high pressure, supercritical water can be miscible with organic matter and oxygen in any ratio, so that the heterogeneous reaction becomes a homogeneous reaction, which greatly reduces the resistance of mass transfer and heat transfer. Inorganic substances, especially salts, have extremely low solubility in supercritical water (usual...

Examples

Embodiment Construction

[0020] refer to figure 1 , figure 2 and image 3 , the reactor for the supercritical water treatment of waste organic matter, including the pressure-bearing wall 4 on the base 1 connected by the bolt assembly 2 (octagonal gasket 14 seal), the insulating heat-conducting wall 7 with the electric heating wire 9 inside, and the heat-conducting wall 7 by the screw 13 A corrosion-resistant wall 11 fixed on the base 1, a hydrocyclone 6 for salt separation, a catalyst case 5 for loading catalyst, a support ring 12 for supporting the catalyst case 5 on the insulating heat-conducting wall 7, a bearing The thermocouple interfaces N3a, N3b, N3c, N3d, N3e on the pressure wall and base for measuring temperature distribution, the pressure gauge and safety valve interfaces N2a, N2b on the pressure wall and base, and the pressure gauge and safety valve on the base. The inlets N4a and N4b for clean cooling water, the outlet N1 for flowing clean cooling water at the top of the pressure-bearin...

technical field

[0001] The invention relates to a supercritical water treatment device for waste organic matter, in particular to a reaction device for supercritical water treatment of waste organic matter. Background technique

[0002] Supercritical water refers to water in a special state where both temperature and pressure are higher than its critical point (T=374.15°C, P=22.12MPa). Compared with liquid water, only a small amount of hydrogen bonds exist in this state, and the dielectric constant is similar to that of polar organic solvents. It has high diffusion coefficient, low viscosity, and good transport performance. Under a sufficiently high pressure, supercritical water can be miscible with organic matter and oxygen in any ratio, so that the heterogeneous reaction becomes a homogeneous reaction, which greatly reduces the resistance of mass transfer and heat transfer. Inorganic substances, especially salts, have extremely low solubility in supercritical water (usual...

Examples

Embodiment Construction

[0020] refer to figure 1 , figure 2 and image 3 , the reactor for the supercritical water treatment of waste organic matter, including the pressure-bearing wall 4 on the base 1 connected by the bolt assembly 2 (octagonal gasket 14 seal), the insulating heat-conducting wall 7 with the electric heating wire 9 inside, and the heat-conducting wall 7 by the screw 13 A corrosion-resistant wall 11 fixed on the base 1, a hydrocyclone 6 for salt separation, a catalyst case 5 for loading catalyst, a support ring 12 for supporting the catalyst case 5 on the insulating heat-conducting wall 7, a bearing The thermocouple interfaces N3a, N3b, N3c, N3d, N3e on the pressure wall and base for measuring temperature distribution, the pressure gauge and safety valve interfaces N2a, N2b on the pressure wall and base, and the pressure gauge and safety valve on the base. The inlets N4a and N4b for clean cooling water, the outlet N1 for flowing clean cooling water at the top of the pressure-bearin...

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