CN115605440A

CN115605440A - Supercritical water oxidation reactor and system for treating organic waste with high solid content

Info

Publication number: CN115605440A
Application number: CN202080094166.8A
Authority: CN
Inventors: 张凤鸣
Original assignee: Guangzhou Institute Of Advanced Technology
Current assignee: Guangzhou Institute Of Advanced Technology; Shenzhen Institute of Advanced Technology of CAS
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2023-01-13
Also published as: WO2021189184A1

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a supercritical water oxidation reactor for treating organic waste with high solid content. The reactor is composed of a vertical section and an inclined section. The top of the vertical section of the reactor is an inlet, and the bottom is an outlet. The inclined section of the reactor is arranged on the side of the vertical section; one end of the inclined section communicates with the vertical section, and the other end is provided with an outlet. Also disclosed is a supercritical water oxidation reaction system using the reactor to treat the solid-containing organic waste. The invention ensures that the reactants are fully degraded and then separates the gas from the solid through the setting of the inclined section of the reactor, thereby improving the quality of the recovered steam.

Description

PCT国内申请，说明书已公开。PCT domestic application, specification has been published.

Claims

A supercritical water oxidation reactor for treating high solid content organic waste comprises a vertical section (100), wherein the top of the vertical section (100) is an inlet, and the bottom of the vertical section is an outlet;

the upright section (100) comprises a pressure-bearing outer shell and an inner shell with a porous structure; the pressure-bearing shell comprises a No. 1 upper flange (101), a No. 1 lower flange (138), an upper straight pipe pressure-bearing shell (132), a lower straight pipe pressure-bearing shell (120) and a lower conical pressure-bearing shell (123) which are connected in sequence;

a 2# protective fluid injection pipe (108) is arranged on the side wall of the upper straight pipe pressure bearing shell (132), and a cooling water injection pipe (124) is arranged at the upper part of the lower conical pressure bearing shell (123);

the reactor is characterized by also comprising an inclined section (200), wherein the inclined section (200) of the reactor is arranged on the side surface of the vertical section (100); one end of the inclined section (200) is communicated with the upright section (100), and the other end is provided with an outlet.
The supercritical water oxidation reactor for treating high solid content organic waste according to claim 1, characterized in that the inclined section (200) of the reactor comprises an inclined pressure-bearing shell (116), a # 2 lower flange (114), and a # 2 upper flange (112) which are connected in sequence; the No. 2 upper flange (112) is communicated with a steam discharge pipe (110); a No. 1 baffle (118), a No. 2 baffle (117) and a No. 3 baffle (115) are sequentially arranged in the inclined pressure-bearing shell (116).
The supercritical water oxidation reactor for treating high solid content organic waste as claimed in claim 2, wherein the # 2 baffle (117) swings in one direction only to one side of the vertical section (100).
The supercritical water oxidation reactor for treating high solid content organic waste according to claim 2 or 3, characterized in that the 2# upper flange (112) is installed with a wire mesh (111).
The supercritical water oxidation reactor for treating high solid content organic waste of claim 1 wherein the outlet of the # 2 protective fluid injection pipe (108) is upward, towards the top of the vertical section (100).
The supercritical water oxidation reactor for treating high solid content organic waste according to claim 1 or 5 is characterized in that the outlet of the cooling water injection pipe (124) faces the top of the vertical section (100).
A supercritical water oxidation reaction system for treating the organic-containing wastes, comprising the reactor according to any one of claims 1 to 6, and a fuel line (300), a reaction fluid inlet line (400), a protection fluid inlet line (500), a waste liquid line (600) and a cooling water line (700) which are connected to an inlet line of the reactor, respectively.
The reaction system according to claim 7, further comprising a settling tank (21), wherein the inlet of the settling tank (21) is connected with the outlet of the reactor, the outlet is connected with the reaction fluid input pipeline and/or a heat exchanger of the protection fluid input pipeline, and the two-way fluid is subjected to partition wall heat exchange in the heat exchanger.
The reaction system according to claim 8, characterized in that the reaction system further comprises a # 3 heat exchanger (17), and the outlet of the sedimentation tank is connected with the reaction fluid input pipeline and/or the heat exchanger of the protective fluid input pipeline and the # 3 heat exchanger pipeline in sequence. And the waste heat recovery device is used for further recovering the waste heat of the reaction product.
The reaction system of claim 7, further comprising a turbine 16, wherein the turbine 16 is connected to the outlet of the inclined section 200 of the reactor by a pipeline, and the heat energy of the reaction product discharged from the outlet of the inclined section 200 of the reactor is recovered.