FIELD: cryogenic engineering; methods of control of the rectification plants operation.
SUBSTANCE: the invention is pertaining to the field of the cryogenic engineering, in particular, to the control of the rectifying plants operation on rectification and separation of the krypton-xenon concentrate produced by the air-fractionating apparatus. The method of control of the rectification plant operation for reprocessing the compressed mixtures includes the control over consumptions of the source mixture in the plant and feeding of the rectifying columns, the pressures and amounts of the top and bottom products gated out of the columns. The rectifying columns are equipped with the sampling devices arranged in their concentration section and the condensers-evaporators with the intermediate coolant in the closed cavity. The mixture at the inlet of the plant is stabilized by the temperature and pressure. Consumption of the mixture by the plant is controlled by the throttle valve, ensuring the pressure drop on the throttle valve for the critical efflux of the mixture. In addition conduct the analysis from the still bottom evaporation area. At that for each column they determine the key components and their share in the preliminary analysis and the analysis from the still bottom evaporation area. The concentrations of the key components are regulated by variation in the contact device of the vapor and the condensate streams. The separation of the top product is conducted in the gaseous form with the constant consumption, the still bottom product is taken out permanently or periodically in the vapor and (or) fluidic form depending on the results of the share of the key component in the mixture from the still evaporation area with the subsequent gasification before the control valve. The useful volume of the still is magnified concerning the hourly productivity of the appropriate column for the bottom product no less than two times, and the pressure in the contact device of the columns is set by variation of the pressure and (or) amount of the intermediate coolant and the heat power of the still boiler of a beck. Usage of the invention ensures the power saving control over the rectifying plant at production of the especially pure target components.
EFFECT: invention ensures the power saving control over the rectifying plant at production of the especially pure target components.
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