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Reactor, reaction system and phenolic wastewater treatment method based on supercritical water oxidation

一种超临界水氧化、反应器的技术，应用在氧化水/污水处理、水/污水处理、化学仪器和方法等方向，能够解决有机废水难以实现反应自热、系统高能耗输入、腐蚀结垢过热等问题，达到保证稳定和可靠、实现自热、加速氧化降解的效果

Active Publication Date: 2021-12-07
GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention mainly solves the problems of corrosion, scaling and overheating of reactors in the system, coking and blockage in the preheating stage, difficulty in realizing the reaction self-heating in the concentration of organic wastewater (especially wastewater containing phenols), and high energy consumption input of the system.

Method used

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  • Reactor, reaction system and phenolic wastewater treatment method based on supercritical water oxidation
  • Reactor, reaction system and phenolic wastewater treatment method based on supercritical water oxidation
  • Reactor, reaction system and phenolic wastewater treatment method based on supercritical water oxidation

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Embodiment 1

[0062] In this embodiment, waste water containing phenol is selected, and the emission standard of phenol after the system treatment of the present application is required to be lower than 0.5 mg / L.

[0063] Such as figure 1 The reaction system based on supercritical water oxidation of the present invention shown includes: waste water branch, fuel branch, evaporated water branch, oxygen branch and reactor 14;

[0064] The waste water branch includes a waste water pool 1, a pretreatment device 3, and a concentration system 4 connected in sequence; the concentrated waste liquid outlet of the concentration system 4 is connected to the concentrated waste water inlet c of the reactor 14; the fuel branch is passed through After the first heat exchange device 10, it is connected to the fuel inlet a of the reactor 14;

[0065] The evaporating water branch includes an evaporating water tank 6. After the outlet of the evaporating water tank 6 is pressurized by an evaporating water pump...

Embodiment 2

[0102] In this embodiment, waste water containing phenol is selected, and the emission standard of phenol after the system treatment of the present application is required to be lower than 0.5 mg / L. In the phenol-containing wastewater treatment process of the present embodiment, the added alkaline agent is sodium carbonate.

[0103] The difference between this embodiment and the treatment system of Embodiment 1 is that the concentration system 4 and the energy recovery device 18 are arranged in different ways.

[0104] Such as Figure 6 As shown, the concentration system 4 of this embodiment includes: a wastewater booster pump 0042 and a reverse osmosis membrane module 0043 connected in sequence. The energy recovery device 18 includes a first heat exchanger 1801 and a pressure energy recovery device 1804 connected in sequence; the pressure energy recovery device 1804 is arranged on the pipeline between the wastewater booster pump 0042 and the pretreatment device 3 .

[0105]...

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Abstract

A reactor based on supercritical water oxidation, the reactor includes an inner shell and an outer shell; the inner shell is coaxially arranged in the outer shell; the inner shell is divided into two parts: an upper cylinder and a lower cone; the cylinder includes an upper non-porous tube (1411) And the lower section of the straight porous pipe (1404), the cone is the tapered porous wall (1407); the outer shell includes the upper connecting flange, the middle straight pressure bearing wall (1403) and the lower conical pressure bearing wall (1409); the cylindrical part of the inner shell The first annular gap is formed between the straight pressure bearing wall (1403) and the connecting flange; the second annular gap is formed between the conical porous wall (1407) and the conical pressure bearing wall (1409); between the first annulus and A partition ring (1405) is provided between the second annular gap; a high-temperature evaporation water injection pipe (1402) is provided on the upper part of the straight pressure-bearing wall (1403); a low-temperature evaporation water injection pipe is provided on the upper part of the conical pressure-bearing wall (1409) (1406); an outlet pipe (1408) is arranged at the bottom of the conical pressure bearing wall (1409); a nozzle pipe (1401) is coaxially arranged on the connecting flange, and the nozzle pipe (1401) passes through the top center of the inner shell. Also disclosed are a reaction system based on supercritical water oxidation and a method for treating phenolic wastewater.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a supercritical water oxidation-based reactor, a reaction system and a method for treating phenol-containing wastewater. Background technique [0002] Phenolic compounds refer to compounds in which the hydrogen atoms on the benzene ring in aromatic hydrocarbons are replaced by hydroxyl groups. According to the number of hydroxyl groups contained in their molecules, they can be divided into monohydric phenols and polyhydric phenols. Phenolic wastewater is one of the most harmful and widely polluting industrial wastewater in the world today, and is an important source of water pollution in the environment. Phenol is contained in the wastewater discharged from many industrial fields such as gas, coking, oil refining, metallurgy, machinery manufacturing, glass, petrochemical, wood fiber, chemical organic synthesis industry, plastic, medicine, pesticide, paint and other i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72
CPCC02F1/72B01J3/008C02F1/04C02F1/441C02F1/727C02F11/086C02F2101/345C02F2201/003C02F2201/004C02F2201/005C02F2209/02C02F2301/066Y02P20/54B01J19/0073B01J19/26C02F1/02C02F1/58
Inventor 张凤鸣苏闯建陈久林杨杰贾翠杰陈顺权黄振飞
Owner GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
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