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Desalting and salt discharging control method for supercritical water oxidation systems

An oxidation system and supercritical water technology, applied in chemical instruments and methods, separation methods, oxidized water/sewage treatment, etc., can solve the problems of SCWO desalination and desalination system control method reports for unorganic waste, and achieve the effect of continuous desalination

Active Publication Date: 2012-08-15
天津市德信成环保科技有限公司
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Problems solved by technology

[0004] The operating conditions of high temperature and high pressure put forward strict requirements on the operation and control of the SCWO desalination and discharge system for organic waste. Although a variety of SCWO systems with desalination and discharge of organic waste have been proposed, there is no research on the SCWO desalination and discharge of organic waste. Report on control method of salt system

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  • Desalting and salt discharging control method for supercritical water oxidation systems
  • Desalting and salt discharging control method for supercritical water oxidation systems

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Embodiment Construction

[0023] see figure 1 , the SCWO desalination system for treating organic waste, including: the outlet pipe of heating furnace 1 is connected to the inlet of hydrocyclone 2, the overflow port at the upper end of hydrocyclone 2 is connected to the pipeline returning to heating furnace 1, and the lower part of hydrocyclone 2 is the storage The salt buffer tank is connected with its own screw conveying motor 8, the lower outlet of the hydrocyclone is connected to the top inlet of a buffer oxidizer 3, the buffer oxidizer 3 is connected to the screw conveying motor 9, and the other inlet of the buffer oxidizer 3 is connected to oxygen supply The buffer oxidizer is provided with a filter 7, the outlet pipe of the filter 7 is connected to the overflow port of the hydrocyclone 2, the lower outlet of the buffer oxidizer 3 is connected to an expansion vessel 4, and the upper outlet of the expansion vessel 4 is connected to the storage Pond 6, expansion tank 4 lower outlets are connected t...

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Abstract

The invention relates to a desalting and salt discharging control method for supercritical water oxidation systems, which is characterized in that a system mainly comprises a heating furnace, a hydrocyclone, an oxidation buffering tank, a flash tank and the like and related control valves. The desalting control includes two parts: the hydrocyclone discharges salt to a buffering oxidation apparatus; and the buffering oxidation apparatus discharges salt to the flash tank, wherein the salt discharging process is performed through intermittent automatic operation. According to the invention, through the salt storage function of a self-contained salt storage buffering tank and the buffering oxidation apparatus of the hydrocyclone, and cooperating with a switching control sequence among the valves, the high-efficiency and continuous desalting of an organic waste supercritical water oxidation treatment system can be realized.

Description

technical field [0001] The invention relates to supercritical water treatment technology for waste organic matter, in particular to a control method for desalination and desalination in a supercritical water treatment system for waste organic matter. Background technique [0002] Supercritical Water Oxidation (SCWO for short) technology is a technology that can realize deep oxidation treatment of various organic wastes. In supercritical water, organic matter can interact with air, O 2 The non-polar gas is miscible to form a homogeneous reaction system, which realizes the efficient and rapid decomposition of organic matter and generates small molecule product H 2 O.CO 2 and N 2 . Although at normal temperature and pressure, the solubility of most salts in water is relatively large, generally around tens to 100g / L, but in critical water, the solubility of inorganic salts in water is significantly reduced, generally at (1-100)× 10 -6 (quality score). Therefore, in genera...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
CPCC02F1/72C02F1/02C02F1/58C02F1/385C02F11/086B01D21/267B01D3/06C02F1/00C02F1/06C02F9/00C02F2101/10C02F2103/08
Inventor 王树众周璐徐东海唐兴颖马红和
Owner 天津市德信成环保科技有限公司
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