Supercritical water oxidation excessive oxygen recovery system
A supercritical water oxidation and recovery system technology, which is applied in oxygen/ozone/oxide/hydroxide, inorganic chemistry, chemical industry, etc., can solve the problem of low oxygen recovery rate, improve service life and reduce operating costs Effect
Active Publication Date: 2018-06-12
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology
Since the solubility of oxygen in high-pressure water is still relatively large, the high-pressure water in the lower part of the high-pressure gas-liquid separator still contains a large amount of carbon dioxide and a part of oxygen. Neither of the above two methods involves how to realize the recovery of oxygen in high-pressure water, resulting in the overall system oxygen Recovery rate is not high
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[0025] The present invention is described in further detail below in conjunction with accompanying drawing:
[0026] Such as figure 1 , figure 2 Shown, a kind of supercritical water oxidation excess oxygen recovery system comprises the energy recovery module 6 that is connected to supercritical water oxidation reactor 3 reaction product outlets, and the exhaust port of energy recovery module 6 is connected with O 2 and CO 2 Separation module; O 2 and CO 2 The separation module includes a regeneration tower 9, a heat exchange device is arranged in the regeneration tower 9, the inlet of the heat exchange device is connected with the exhaust port of the energy recovery module 6, and the outlet of the heat exchange device is connected with the first gas through the first back pressure valve 14. Liquid separator 15, the gas phase outlet of the first gas-liquid separator 15 is connected with absorption tower 12, the liquid phase outlet of the first gas-liquid separator 15 is co...
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The invention discloses a supercritical water oxidation excessive oxygen recovery system. A regeneration tower, a gas-liquid separator and an adsorption tower in an O2 and CO2 separation module are used for separating and purifying mixed gas O2 and CO2 from an energy recovery module, high-concentration O2 is separated and is conveyed to an oxidizing agent supply module via an oxygen pump to realize oxygen recycling; the separated high-purity CO2 is stored and sold so as to bring economic benefit; the separated H2O is conveyed to a waste liquid supply module through a solution pump to regulatethe concentration of the organic waste liquid so as to achieve an optimal processing effect. According to the device, an adsorption method, a membrane separation method and a rectification method areused for processing an SCWO (Supercritical Water Oxidation) product, high-purity oxygen can be obtained while a high-purity carbon dioxide product is guaranteed, the product of the system is simple, oxygen dissolved in first separator high-pressure water can be separated, purified and recovered, the oxygen recovery and use ratio of a whole system can be obviously improved, and cost wasted by the oxidizing agent is greatly reduced so as to be favorable for lowering waste liquid processing cost.
Description
technical field [0001] The invention relates to the field of organic waste treatment, in particular, the invention particularly relates to a supercritical water oxidation excess oxygen recovery system. Background technique [0002] Supercritical Water Oxidation (SCWO) is a process that exceeds the critical point of water (P c =22.1MPa, T c =374.15°C) under high temperature and high pressure conditions, the method of "burning" and oxidizing organic matter through an oxidant. This technology uses the unique physical and chemical properties of supercritical water (such as low viscosity, high diffusion coefficient, small surface tension, etc.) to rapidly oxidize organic matter into CO 2 、H 2 O, N 2 And other non-toxic and harmless products, due to the high efficiency and cleanliness of this technology, it has received extensive attention from scholars at home and abroad. [0003] When using SCWO technology to treat organic matter, in order to completely degrade the organic ...
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Patent Timeline
Login to View More IPC IPC(8): B01D53/22B01D53/26B01D53/18B01D53/00C01B32/50C01B13/02
CPCB01D53/229C01B13/0248Y02C20/40Y02P20/10Y02P20/50Y02P20/151Y02P20/54
Inventor 陈海峰陈久林康泰沈佳琪
Owner SHAANXI UNIV OF SCI & TECH