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A device and method for removing hydrogen impurities in a cold neutron source system

A neutron source and hydrogen technology, applied in chemical instruments and methods, inert gas compounds, specific gas purification/separation, etc., can solve the problems of complex regeneration process of the adsorber, waste of helium, etc., and achieve convenient regeneration and strong adsorption Effect

Active Publication Date: 2018-03-30
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, it mainly relies on the adsorber inside the helium refrigeration system to absorb impurity gases, and the regeneration process of the adsorber is complicated and requires a large amount of helium to be wasted.

Method used

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  • A device and method for removing hydrogen impurities in a cold neutron source system

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] Such as figure 1 As shown, the device for removing hydrogen impurities in the cold neutron source system of the present invention includes an outlet valve 1, an adsorption tank 2, a return valve 3, a pressure relief valve 4, a vacuum valve 5, a vacuum pump 6, a high-pressure helium pipeline 7 and a low-pressure Helium pipeline 8, the components are connected by pipelines; the adsorption tank 2 is connected with the high-pressure helium pipeline 7 through the outlet valve 1, and the adsorption tank 2 is connected with the low-pressure helium pipeline 8 through the return valve 3, and the adsorption The tank 2 is connected with the vacuum pump 6 through the vacuum valve 5, and a pressure relief valve 4 is connected between the adsorption tank 2 and the vacuum valve 5 as a bypass; the outer layer of the adsorption tank 2 is an insulating layer, and the middle lay...

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Abstract

The present invention discloses an apparatus and a method for removing hydrogen impurities in a cold neutron source system. The apparatus makes use of the pressure difference of helium between high pressure helium pipelines and low pressure helium pipelines in the cold neutron source system, the hydrogen impurities in the cold neutron source system are removed by an adsorption device, wherein the adsorption device has strong adsorption capacity and the adsorbent in the adsorption device is easy to reproduce; the absorbed hydrogen impurities are concentratedly discharged to the outside of the cold neutron source system, so that process gas in the cold neutron source system is not easy to be polluted, and bad consequences that the accumulation of the hydrogen impurities in a low temperature region of the cold neutron source system leads to hydrogen embrittlement of structural materials to make the structural materials lose efficacy can be effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of hydrogen gas impurity removal, and in particular relates to a device and method for removing hydrogen gas impurities in a cold neutron source system. Background technique [0002] A cold neutron source is a device for obtaining cold neutrons. Its working principle is to pass thermal neutrons through a neutron moderator, thereby changing the neutron energy spectrum and increasing the share of cold neutrons. The cooling medium of the cold neutron source is helium, and the high-purity helium at room temperature becomes low-temperature helium at about 15K after passing through the fixed process of the helium refrigeration system, so as to maintain the low-temperature environment of the neutron moderator. [0003] The process of refrigerating helium in the cold neutron source system is as follows: the low-pressure helium is compressed by the screw helium compressor and the compressor oil, then enters the oil r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B23/00
CPCC01B23/0063C01B2210/0031C01B2210/0053
Inventor 兰晓华薛志彦刘聪游庆明刘显坤张百甫唐彬
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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