A temperature control method of a krypton-xenon separation tower
A temperature control method and separation tower technology, which is applied in the field of temperature control of krypton-xenon separation tower, can solve the problems that the change of working conditions cannot be guaranteed, and the rapid recovery of working conditions cannot be guaranteed, and the effect of rapid recovery of working conditions can be achieved
Inactive Publication Date: 2019-06-04
SHANGHAI QIYUAN AIR SEPARATION TECH DEV +1
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Problems solved by technology
[0004] This patent achieves the purpose of stabilizing the temperature of key points by adjusting the power of the reboiler, but when the working conditions change suddenly, it is necessary to intervene in the power of the reboiler in a very short time to quickly restore the temperature of the key points, and relying on manual intervention There is no guarantee that the change of working conditions will be discovered at the first time, nor can it be guaranteed that the working conditions can be restored quickly in a short time
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0036] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0038] Such as figure 1 Shown, a kind of temperature control method of krypton-xenon separation tower, is appli...
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The invention discloses a method for controlling the temperature of a krypton and xenon separation tower, and relates to the technology of deep cooling separation methods. The method for controlling the temperature of the krypton and xenon separation tower comprises the steps that set time Tn1 is used as a period for detecting key temperature of temperature detection points set inside a rectifying tower set, the power basic value is adjusted according to the relationship between the key temperature value and a safety temperature value, set time Tn2 is used as a period for detecting key temperature of the temperature detection points set inside the rectifying tower set, and the power basic value is adjusted according to the relationship between the key temperature value and a set temperature value. When the key temperature during krypton and xenon separation changes and working conditions cannot be stabilized through automatic adjustment in time, the power basic value is interfered automatically and rapidly so that the purpose of recovering the working conditions rapidly is achieved.
Description
technical field [0001] The invention relates to cryogenic separation technology, in particular to a temperature control method of a krypton-xenon separation tower. Background technique [0002] When the cryogenic method separates the krypton-xenon mixture, the purpose of separating krypton and xenon is achieved by controlling the temperature of the key temperature point of the krypton-xenon separation tower. During operation, the temperature change at this point will directly affect the separation effect of krypton and xenon. If the temperature is too high, a large amount of xenon is evaporated to the top of the separation tower and mixed into the krypton, resulting in a decrease in the extraction rate of xenon, which will affect the purity of subsequent rectification pure krypton; if the temperature is too low, the top krypton and nitrous oxide, fluorine Compounds, etc. condense into the xenon at the bottom, resulting in a decrease in the extraction rate of high-purity kry...
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IPC IPC(8): F25J3/02
Inventor 陈云凯俞建李有兵丁加仓林伟陈正巧陆凯石松吉
Owner SHANGHAI QIYUAN AIR SEPARATION TECH DEV