A kind of sub/supercritical water inorganic salt crystallization-deposition test system and method
A technology of supercritical water and test method, which is applied in the preparation of test samples, measurement devices, temperature control by electric means, etc. problems to ensure safe operation
Active Publication Date: 2021-07-27
XI AN JIAOTONG UNIV
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Problems solved by technology
However, the existing methods to solve salt deposition have their own shortcomings, and none of the structural design or operation technology has significant advantages
The main reason is that under the harsh conditions of high temperature and high pressure supercritical water, it is difficult to explore the crystallization and deposition characteristics of inorganic salts, so that it is impossible to grasp its behavior and prescribe the right medicine
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[0038]The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.
[0039] The present invention will be further described in detail below in conjunction with specific examples, which are meant to explain rather than limit the present invention.
[0040] see figure 1 , a kind of inorganic salt crystallization-deposition test system in subsupercritical water of the present invention, the whole system comprises preheating unit, test unit, post-reaction treatment unit, wherein:
[0041] The preheating unit is mainly used to preheat hot water and salt solution respectively, and can realize pressurization. In the present embodiment, it includes a water storage tank 1, a water pump 2, a preheater 3, a saline solution tank 4, a saline solution pump 5 and a preheater 2 6, the outlet of the water storage tank 1 is connected to the inlet of the water pump 2, and the water pump 2 The outlet is connected to the inlet of pr...
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A sub / supercritical water inorganic salt crystallization-deposition test system, including: a preheating unit for preheating hot water and saline solution respectively; a test unit including a high-pressure reactor with built-in coils and a water connection plate after preheating The inlet of the tube, the preheated salt solution is connected to the inlet of the autoclave, and the inlet of the autoclave is opened on the lid of the autoclave, and a sample block is arranged at the end of the inlet in the autoclave, and a stirrer and a thermometer cover are also arranged in the autoclave The kettle cover is also provided with a high-pressure reactor outlet and a pressure gauge interface; the post-reaction processing unit includes a salt solution filtration cooling depressurization sampling line connected to the high-pressure reactor outlet and a water cooling depressurization pipeline connected to the coil outlet. The present invention also provides a test method based on the system, which can collect salt crystal particle samples online and test the deposition rules of inorganic salt crystals under different wall temperatures and different turbulence degrees, and then grasp its behavior rules to solve the problem of sub / supercritical water oxidation. Salt deposition problem in .
Description
technical field [0001] The invention belongs to the technical fields of energy, chemical industry and environmental protection, and particularly relates to an inorganic salt crystallization-deposition testing system and method in sub / supercritical water. Background technique [0002] Supercritical water oxidation has a wide range of treatment, and almost all wastes containing organic matter can be treated by this technology. This technology has relatively mature technology and excellent effect in supercritical water oxidation treatment of pollutants such as phenolic compounds, polychlorinated biphenyl organics, pesticides and fuel intermediate aniline, sludge treatment and human metabolites. Whether it is from the perspective of sustainable development of the environment or from the perspective of industrial development, supercritical water oxidation technology is a promising green and environmentally friendly new technology. [0003] Supercritical water oxidation treatment...
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IPC IPC(8): G01N15/04G01N21/82G01N21/01G05D23/19G01N1/10G01N1/20G01N1/28G01N1/34G01N1/42G01N1/38
CPCG01N1/10G01N1/20G01N1/28G01N1/34G01N1/38G01N1/42G01N15/04G01N21/01G01N21/82G01N2001/105G01N2021/0112G05D23/19
Inventor 王树众张熠姝贺超蒋卓航李建娜
Owner XI AN JIAOTONG UNIV