Method and device for separating gases and/or liquids

Abstract

Method and device for separating gases and / or liquids in a vertical column ( 1 ). The top product ( 4 ) of the column ( 1 ) is cooled and partly recycled. The bottom product ( 3 ) of the column ( 1 ) is heated and partly recycled. Cooling and heating take place with the aid of a thermoacoustic heat pump ( 10 ), which can be driven by external heating ( 2 ). A relatively large temperature difference between top product and bottom product can be overcome by this means.

Description

technical field [0001] A physicochemical process for implementation in one or more reactors, wherein heat is supplied to a first location in said reactor and heat is withdrawn from a second location in said reactor, said first The temperature of the location is higher than the temperature of the second location, and the transfer of heat from the second location to the first location is achieved by a heat pump. Background technique [0002] A method of the above-mentioned type is known in the prior art. In the case of distillation of a gas or gas mixture from a liquid, overhead and bottom products are produced in vertical separation columns. It is known in this respect that heat is extracted from the top product and transferred to the bottom product, and one of the two products is then partly recycled into the column. In this way, the desired temperature difference required for the separation is maintained in the most energy-efficient manner possible. Since the absolute te...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of heat pumps is that they are most efficient when they are used to create relatively small temperature differences

With the existing heat pump, when it is used to establish a large temperature difference, it needs to use a relatively large-load compressor, and has to introduce a large amount of additional energy. As a result, the energy-saving effect of the heat pump will drop sharply

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