Supercritical water oxidation reactor and working method thereof

Abstract

The invention discloses a supercritical water oxidation reactor and a working method thereof. The supercritical water oxidation reactor comprises a reaction container and a spiral coil arranged in thereaction container, wherein a central reaction channel, an annular chamber located at the periphery of the central reaction channel and a communication chamber located at the bottom in the reaction container are arranged in the reaction container, and the central reaction channel is communicated with the annular chamber through the communication chamber; a feeding hole and a discharging hole areformed in the top of the reaction container; a water inlet communicated with the annular chamber and an oxygen inlet communicated with the central reaction channel are formed in the side wall of the reaction container; the spiral coil is located in the annular cavity, an upper port of the spiral coil is communicated with the feeding hole, and a lower port of the spiral coil is communicated with the central reaction channel. According to the supercritical water oxidation reactor disclosed by the invention, reaction partition is realized in the reaction container, solid organic matters are degraded from a solid state to a liquid state and a gas state firstly, and then homogeneous supercritical water oxidation reaction and separation of insoluble substances such as inorganic salt are realized, so that the problems of degradation difficulty and corrosion are solved.

Description

technical field [0001] The invention relates to a supercritical water oxidation reactor, in particular to a supercritical water oxidation reactor and a working method thereof. Background technique [0002] At present, there are two types of reactors that use supercritical water oxidation technology to treat refractory solid organic waste, and their advantages and disadvantages are as follows: [0003] (1) Use a single tubular reactor to degrade and oxidize solid organic waste. Advantages: A tubular reactor with a suitable length can be used to achieve a uniform reaction residence time of solid organic waste in a flow state close to plug flow and complete reaction. Disadvantages: The length of the reactor is long and the space layout is easily limited; the inorganic salt precipitate generated during the supercritical water oxidation reaction is difficult to separate, and the precipitate is easy to accumulate on the inner wall of the reaction tube, causing blockage; the press...

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Problems solved by technology

Disadvantages: The length of the reactor is long and the space layout is easily limited; the inorganic salt precipitate generated during the supercritical water oxidation reaction is difficult to separate, and the precipitate is easy to accumulate on the inner wall of the reaction tube, causing blockage; the pressure-bearing boundary is in contact with the supercritical reaction zone. Media with aggressive components are prone to severe corrosion and pose a safety hazard

Disadvantages: Due to the existence of batch reactors, the reaction process does not have the characteristics of continuous treatment, which is not conducive to industrial promotion and use; two high-temperature and high-pressure reactors are configured at the same time, and the high-temperature and high-pressure material transportation between the two reactors increases the cost of the device process. complexity, which increases the cost of the installation

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