Multi stage compressor for vapor recirculation

Abstract

A multi-stage compressing device for re-circulating steam according to the present invention includes: a compressing unit formed to include at least three compressor, compressing waste stem discharged from a plant at a high temperature and a high pressure in multiple stages, and returning the compressed steam back to the plant; a low-temperature condensate tank receiving low-pressure condensate discharged between a first compressor and a second compressor; and a high-pressure condensate tank receiving high-pressure condensate discharged between the second compressor and a third compressor. The multi-stage compressing device for re-circulating the steam according to the present invention enables the waste steam discharged from the plant to be reused by compressing the waste steam at a high temperature and a high pressure in the multiple stages and enables the condensate generated during the process of compressing the waste steam to be reused by separating the condensate into the high-temperature steam and the low-temperature water and returning the high-temperature steam back to the plant, thereby improving the energy efficiency of the plant and reducing environmental pollution.

Description

technical field [0001] The invention relates to a multi-stage compression device for steam recycling, which compresses the steam discharged from petrochemical equipment after multi-stage compression and returns it to the equipment. Specifically, it relates to a multi-stage compression device for steam recycling that can separate the condensed water generated in the multi-stage compression process into low-temperature water and high-temperature steam, and return the high-temperature steam to the equipment. Background technique [0002] Generally, equipment used in the petrochemical industry utilizes high-temperature, high-pressure steam provided through a process of heating pure water. [0003] In this case, the temperature and pressure of the steam used in the equipment will decrease, making it unsuitable for the equipment to be reused, so it is discharged to the outside. However, the steam discharged from the above equipment (hereinafter referred to as "waste water steam")...

AI Technical Summary

Problems solved by technology

However, devices capable of reusing the heat source in waste water steam have not been commercialized so far, so it is generally expensive to use equipment (plant)

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