Ethyl alcohol heat pump rectification waste heat recycling system device

Abstract

The invention relates to an ethyl alcohol heat pump rectification waste heat recycling system device. The ethyl alcohol heat pump rectification waste heat recycling system device comprises a raw material liquid tank, a circulation pump, a preheater, a buffering tank, an ethyl alcohol circulation pump, a compressor, a falling film evaporator, a rectifying column and an ethyl alcohol tank, wherein the raw material liquid tank is connected with the feeding inlet of the rectifying column through the preheater, the liquid outlet of the rectifying column is connected with the nozzles of the fallingfilm evaporator through the circulation pump, the gas outlet of the rectifying column is connected with a compressor gas inlet, the discharging outlet of the falling film evaporator is connected withthe inlet of the buffering tank through the preheater, the vapor discharging port of the falling film evaporator is connected with the gas inlet of the rectifying column, the liquid outlet of the falling film evaporator is connected with the nozzles of the falling film evaporator through the circulation pump, the gas inlet of the falling film evaporator is connected with the gas outlet of the compressor, and the outlet of the buffering tank is connected with the reflux inlet of the rectifying column and an ethyl alcohol tank through the ethyl alcohol circulation pump. The ethyl alcohol heat pump rectification waste heat recycling system device has the advantages of being simple in technology, high in practicability, small in floor space, small in number of operators and small in number ofmatched public engineering projects, and low in energy consumption and operation cost because the system does not need to consume a large amount of vapor.

Description

technical field [0001] The invention relates to the field of rectification and extraction, in particular to an alcohol heat pump rectification waste heat reuse system device. Background technique [0002] In industrial production, ethanol with a high concentration of more than 93% is often required as an extraction solvent, and a large amount of dilute ethanol solutions with different concentrations will be produced after use. In order to save energy, reduce consumption and recycle and reuse, rectification of dilute ethanol solutions is usually used Purify and condense for reuse. [0003] At present, the ethanol rectification tower system is generally used to realize the rectification of ethanol. The main reboiler is used to vaporize part of the liquid at the bottom of the tower and send it back to the rectification tower, so that the contact mass transfer between the vapor and liquid phases in the tower can be carried out, and the top of the tower Distilling 78-degree wine...

AI Technical Summary

Problems solved by technology

[0003] At present, the ethanol rectification tower system is generally used to realize the rectification of ethanol. The main reboiler is used to vaporize part of the liquid at the bottom of the tower and send it back to the rectification tower, so that the contact mass transfer between the vapor and liquid phases in the tower can be carried out, and the top of the tower Distilling 78% wine needs to be cooled with water at room temperature before it can be collected. There are problems such as high energy consumption and high operating costs.

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