VPCE (vapor phase catalytic exchange) static performance testing method

A test method and technology for static performance, applied in the field of thermonuclear fusion reaction research, can solve problems such as lack of targeted research methods, poor comprehensive performance evaluation of catalyst components, and inability to determine catalysts, so as to improve accuracy and reduce hybrid interference. Effect

Active Publication Date: 2017-06-13
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the research on the performance of catalysts is mainly focused on the comparison of general catalysts, and there is no special targeted research method. It is impossible to determine the continuous catalytic performance research and analysis of catalysts in the process of application, and it is impossible to determine the performance of specific catalysts. The change of material properties with different reaction conditions and parameters is not good for the comprehensive performance evaluation of catalyst components, which is not conducive to the selection of catalyst components that are more suitable for VPCE technology

Method used

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  • VPCE (vapor phase catalytic exchange) static performance testing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 The shown VPCE static performance testing device system includes a constant temperature tank 1 and a mixing tank 2 and a reaction tank 3 arranged in the constant temperature tank 1. A communication valve 4 is arranged between the mixing tank 2 and the reaction tank 3, so that the mixing tank 2 can be realized. It is isolated from the connection and closure of the reaction tank 4. The hydrophilic catalyst to be detected and analyzed is placed in the reaction tank and sealed. Open the first evacuation valve 63, the second evacuation valve 66 and the communication valve 4 to vacuumize the whole system. Then vacuum flushing: pass 99.9% pure hydrogen from the hydrogen tank 5 into the mixing tank 2, then vacuum again, and then pass hydrogen, repeat 3 times to complete the flushing. Finally, the whole system is evacuated to below 50 Pa (absolute atmospheric pressure), and the first evacuation valve 63 , the second evacuation valve 66 and the communication va...

Embodiment 2

[0043] same use figure 1 The device system shown, and the method similar to that of Example 1 was used for online sample testing and analysis: the prepared hydrophilic catalyst was placed in a reaction tank and sealed. Open the evacuation valve 1, the evacuation valve 2 and the connection valve, and perform evacuation and flushing of the entire system. Generally, the evacuation and flow flushing is performed 3 times, and each time the system is filled with pure hydrogen with a purity of more than 99.9%, and finally the entire system is evacuated to Below 50Pa. Close evacuation valve 1, evacuation valve 2 and connecting valve. Open the hydrogen injection valve, inject a quantitative amount of more than 99.99% pure hydrogen into the mixing tank, and then close the hydrogen injection valve. Open the injection valve, inject a certain amount of deuterium-containing water (HDO) into the mixing tank, and close the hydrogen injection valve. Turn on the oil bath device to keep the t...

Embodiment 3

[0049] The same VPCE static performance test method as in Example 1 was used to study and analyze the reaction of the heavy aqueous solution in the device system.

[0050] First, test the static balance of the system

[0051] The static equilibrium test is to measure the deuterium content in hydrogen after the deuterium-containing water and hydrogen fully react to reach equilibrium under the action of a catalyst and at a certain temperature and pressure, and record the parameter results of the specific test. The specific test and analysis process includes the following process: 1) The temperature, pressure, and feed ratio (the ratio of deuterium-containing water to hydrogen substance mass) are constant, and the deuterium content in hydrogen is determined when different catalysts are used; 2) Catalyst, temperature, and feed ratio Certain, when adopting different reaction pressures, deuterium content in hydrogen. 3) The catalyst, pressure, and feed ratio are constant, and the d...

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Abstract

The invention discloses a VPCE (vapor phase catalytic exchange) static performance testing method. The method comprises the following steps: S1, putting a catalyst to be detected and analyzed in a reaction tank, and closing; S2, vacuumizing a reaction vessel: washing several times, and then vacuumizing the reaction vessel; S3, separating a mixing tank and the reaction tank to form independent spaces; and introducing pure hydrogen into the mixing tank, and injecting deuterium-containing water into the mixing tank; S4, regulating a temperature control device, so that the temperature of the reaction vessel reaches a preset temperature value; monitoring a pressure sensor and a temperature sensor of the mixing tank and the reaction tank; when the temperature and pressure from the both reach preset requirements, enabling the mixing tank to communicate with the reaction tank; and reacting deuterium-containing vapor and hydrogen gas in the presence of a hydrophilic catalyst; and S5, sampling and detecting: sampling from the reaction tank at set intervals, detecting and analyzing. The VPCE static performance testing method disclosed by the invention can accurately acquire the kinetic curve, equilibrium constant, separation factor and other parameters of hydrogen-water isotope catalytic exchange reaction.

Description

technical field [0001] The invention relates to a research method of phase inversion exchange reaction, more specifically to a hydrogen-water steam phase catalytic exchange method and research thereof, especially a research method of heavy water conversion, which belongs to the research field of thermonuclear fusion reaction. Background technique [0002] Hydrogen-water vapor phase catalytic exchange (VPCE) is one of the important methods for water detritiation and heavy water production. In particular, with the rapid development of inland nuclear power, the first batch of inland nuclear power plants in my country is expected to be built, and the discharge of tritium-containing wastewater is a problem that must be paid attention to and solved. Research on VPCE technology in the prior art mainly focuses on the selection and preparation of hydrophilic catalysts, but lacks the necessary verification means, and the performance results proposed by various research institutions fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
CPCG01N30/02
Inventor 姜飞喻彬张志陈闽宋江锋李佩龙邓立文明胡俊
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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