Supercritical water online flow testing device

Abstract

The utility model discloses a supercritical water online flow testing device. The device comprises a device main body and a real-time online sampling system; the device body comprises a test pipe section; a plurality of electric heaters are circumferentially arranged outside the front section of the test pipe section; a cooling water jacket is circumferentially arranged outside the rear section; aplurality of thermocouples and a plurality of pressure tapping holes are arranged on the test pipe section, and the thermocouples at least comprise a thermocouple I for testing the temperature of thepipe wall, a thermocouple II for testing the temperature of fluid at the pipe wall and a thermocouple III for testing the temperature of fluid at the axis in the pipe; a real-time online sampling system comprises a plurality of sampling probes penetrating into the test pipe section; the sampling probes at least comprise a sampling probe I and a sampling probe II, wherein the sampling probe I andthe thermocouple I are oppositely arranged to sample fluid near the wall, and the sampling probe II and the thermocouple III are oppositely arranged to sample fluid at the axis in the pipe; each sampling probe is connected with an independent sampling bottle. According to the invention, the microscopic characteristics of material corrosion products and inorganic salt crystal particles and the distribution rules of a fluid temperature field, a pressure field and a concentration field can be visually mastered.

Description

technical field [0001] The invention relates to the technical fields of energy, environment and chemical industry, in particular to an online flow test device for 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 excellent effects in the treatment of pollutants such as phenolic compounds, polychlorinated biphenyls, 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 technology has the following unique advantages: [0004] 1. The reaction speed is extremely fast and the removal rate is high. In the ...

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Problems solved by technology

[0010] In order to solve the problem that the fluid flow information during the operation of the supercritical water system cannot be obtained accurately, the purpose of the present invention is to provide a supercritical water online flow test device, through the design of the real-time online sampling system, the axial and Real-time test and analysis of circumferential fluid concentration field distribution; through the setting of detachable sample strips, the capture and collection of corrosion products and inorganic salt crystal deposition products during the reaction process are realized, which is convenient for later sampling for test analysis; through electric heaters and The setting of the cooling water jacket forms hot / cold wall conditions at different temperatures, thereby affecting the corrosion of the fluid and the characteristics of salt crystal deposition; through the setting of thermocouples at different positions and lengths, the fluid in the axial direction during the flow of supercritical water can be realized. On-line test of the distribution law of the temperature field and the circumferential direction; through the setting of multi-point pressure taps, the pressure difference changes of different pipe sections during the operation of the supercritical water system can be detected in real time, so as to facilitate the judgment of pipe blockage

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