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Method for treating carbon-containing organic matter by supercritical water oxidation

A technology of supercritical water oxidation and organic matter, applied in the direction of oxidized water/sewage treatment, etc.

Active Publication Date: 2013-05-01
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, how to rationally utilize the reaction heat of SCWO, how to realize the energy self-compensation process route, and improve the economy of SCWO industrial application are difficult to solve.

Method used

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  • Method for treating carbon-containing organic matter by supercritical water oxidation
  • Method for treating carbon-containing organic matter by supercritical water oxidation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] A method for supercritical water oxidation treatment of carbon-containing organic matter, such as figure 1 Carry out in the device of described supercritical water oxidation treatment carbonaceous organic matter, comprise the steps:

[0114] (1) Start the supercritical water oxidation reaction:

[0115] During the start-up process of the system, methanol is used as the auxiliary fuel, and the pressure of methanol reaches 22.5-23MPa through the auxiliary fuel pump, and the low-temperature combustion catalyst adopts PtO / Al 2 o 3 , the amount of methanol is 60% of the content of carbon-containing organic matter in the raw material, and the system oxidant uses O 2 , the pressure of the auxiliary fuel and oxidant passing through the oxidant pump is 23-24MPa, and the amount of auxiliary fuel oxidant is 120% of the oxygen demand for complete combustion of the auxiliary fuel;

[0116] (2) Stable operation of supercritical water oxidation reaction:

[0117] After the auxilia...

Embodiment 2

[0121] A method for supercritical water oxidation treatment of carbon-containing organic matter, such as figure 2 Carry out in the device of described supercritical water oxidation treatment carbonaceous organic matter, comprise the steps:

[0122] (1) Start the supercritical water oxidation reaction:

[0123] During the start-up process of the system, ethanol is used as the auxiliary fuel, and the ethanol is pressurized to 25-26MPa through the auxiliary fuel pump, and the low-temperature combustion catalyst adopts Pt / Al 2 o 3 , the amount of ethanol is 80% of the carbon-containing organic matter content of the raw material, and the system oxidant uses H 2 o 2 , the pressure of auxiliary fuel and oxidant reaches 26-27MPa through the oxidant pump, and the amount of auxiliary fuel is 130% of the oxygen demand for complete combustion of auxiliary fuel;

[0124](2) Stable operation of supercritical water oxidation reaction:

[0125] After the auxiliary fuel is burned, the te...

Embodiment 3

[0129] A method for supercritical water oxidation treatment of carbon-containing organic matter, such as figure 1 Carry out in the device of described supercritical water oxidation treatment carbonaceous organic matter, comprise the steps:

[0130] (1) Start the supercritical water oxidation reaction:

[0131] During the start-up process of the system, propanol is used as the auxiliary fuel, and the pressure of propanol is increased to 35-38MPa through the auxiliary fuel pump, and the low-temperature combustion catalyst adopts PdO / Al 2 o 3 , the amount of auxiliary fuel is 20% of the content of carbon-containing organic matter in the raw material, the oxidant of the system is air, the pressure of the auxiliary fuel flow oxidant is increased to 38-40MPa through the oxidant pump, and the amount of oxidant is 110% of the oxygen contained in the oxidant, which is the complete combustion oxygen demand of the auxiliary fuel %.

[0132] (2) Stable operation of supercritical water ...

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Abstract

The invention relates to a method for treating carbon-containing organic matter by supercritical water oxidation. The method comprises the step of obtaining oxidative decomposition product by oxidizing the carbon-containing organic matter in the supercritical state of water and under the effect of oxidant; heat released by the supercritical water oxidation treatment of the carbon-containing organic matter at least can satisfy the heat required by warming the carbon-containing organic matter to the supercritical state of the water, thereby energy is not required to be provided by the outside in the stable operation process, and the self-supply of reaction energy is completely achieved; and the cold start of the reaction is achieved by the cold start mode of low-temperature combustion catalysis.

Description

technical field [0001] The invention relates to a method for treating carbon-containing organic matter, in particular to a method for supercritical water oxidation treatment of carbon-containing organic matter. Background technique [0002] Supercritical water (SCW: above 374°C / 22.1MPa) has completely different physical and chemical properties from water at normal temperature and pressure, such as large specific heat capacity, high heat transfer coefficient, large diffusion coefficient, high ion product, low viscosity, dielectric The constant is small, the ionization constant is small, the density is small and changes with pressure, and it is completely miscible with organic matter and gas. Therefore, SCW has broad application prospects in the fields of environmental protection, chemical industry, coal gasification, nuclear power and thermal power, and new material synthesis. However, at present, SCW has only been successfully applied in the thermal power industry, and its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
Inventor 王青程乐明刘扬张玉宝宋成才高志远曹雅琴宋庆峰
Owner ENN SCI & TECH DEV
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