Online regeneration system

Abstract

The invention is suitable for the field of helium refrigeration, and discloses an online regeneration system. The online regeneration system comprises an adsorber bypass used for being connected with an adsorber in parallel, an adsorber gas inlet valve, an adsorber gas outlet valve, a regenerated gas inlet valve arranged between the adsorber and the adsorber gas outlet valve, a rewarming heater arranged between the adsorber gas inlet valve and the adsorber, a vacuum pump and a tail gas recovery device which are respectively connected with a gas outlet of the rewarming heater, a regenerated gas discharge valve, a tail gas recovery valve, a first pressure sensor which is used for measuring the internal pressure of the adsorber, a second pressure sensor is used for measuring the pressure at the inlet side of the vacuum pump; a first temperature sensor which is used for measuring the temperature of the adsorber, a second temperature sensor which is used for measuring the temperature of the tail gas at the outlet side of the rewarming heater; wherein the adsorber gas inlet valve, the adsorber gas outlet valve and the adsorber bypass are arranged in a cold box, and other parts are arranged outside the cold box, so that the number of equipment in the cold box and the complexity of a pipeline system are reduced.

Description

technical field [0001] The invention relates to the technical field of helium refrigeration, in particular to an online regeneration system suitable for an adsorber of a helium refrigeration system. Background technique [0002] The boiling point of liquid helium is minus 269°C. At such a low temperature, various other gases not only become liquid, but even most of them become solid. In order to prevent freezing blockage of flow passages, pipes and valves of the heat exchanger or damage to the turbine by solid impurities due to the solidification of other media under low temperature conditions, the helium liquefaction or helium refrigeration system needs to be equipped with one-stage or multi-stage adsorbers. Helium is purified. For example, most of the impurity gases such as oxygen, nitrogen, and hydrocarbons are removed in the primary adsorber, and impurity gases such as hydrogen and neon are removed in the secondary adsorber. Under long-term continuous operation, especia...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an online regeneration system, which aims to solve the technical problem that the existing online regeneration system needs to add a spare adsorber and a plurality of low-temperature valves inside the cold box, which leads to an increase in equipment investment costs and an increase in the footprint of the cold box

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