Gas Compression Device

Abstract

A steam compression device (gas compression device) includes: a second gas-liquid separator (gas-liquid separator) that evaporates water to generate water vapor and separates the water vapor from the water; an exhaust heat recovery heat exchanger (heat recovery unit) that supplies the water heated by hot water to the second gas-liquid separator (gas-liquid separator); a compressor that compresses the water vapor supplied from the second gas-liquid separator (gas-liquid separator); and a superheater that heats the water vapor by heat exchange between the hot water supplied to the exhaust heat recovery heat exchanger (heat recovery unit) and the water vapor supplied from the second gas-liquid separator (gas-liquid separator) to the compressor, in which the hot water flows through the superheater and the exhaust heat recovery heat exchanger in this order.

What is claimed is: 
     
         1 . A gas compression device comprising:
 a gas-liquid separator that evaporates liquid to generate gas and separates the gas from the liquid;   a heat recovery unit that supplies the liquid heated by a heat medium to the gas-liquid separator;   a compressor that compresses the gas supplied from the gas-liquid separator; and   a superheater that heats the gas by heat exchange between the heat medium supplied to the heat recovery unit and the gas supplied from the gas-liquid separator to the compressor,   wherein the heat medium flows through the superheater and the heat recovery unit in this order.   
     
     
         2 . The gas compression device according to  claim 1 , wherein the heat recovery unit is a heat exchanger that performs heat exchange between the heat medium supplied from the superheater and a liquid supplied from the gas-liquid separator to heat the liquid. 
     
     
         3 . The gas compression device according to  claim 2 , wherein the superheater has a heat transfer area of heat exchange that is smaller than a heat transfer area of heat exchange in the heat recovery unit. 
     
     
         4 . The gas compression device according to  claim 1 , further comprising:
 a first pipe for supplying the heat medium to the superheater;   a second pipe for supplying the heat medium from the superheater to the heat recovery unit; and   a third pipe connecting the first pipe and the second pipe.   
     
     
         5 . The gas compression device according to  claim 4 , further comprising:
 a first temperature detector that detects a first temperature of the gas supplied from the gas-liquid separator to the compressor through the superheater, the gas being close to an inlet of the superheater;   a second temperature detector that detects a second temperature of the gas close to an outlet of the superheater;   a heat medium flow regulating valve that regulates a flow rate of the heat medium flowing through the superheater; and   a controller that control an opening degree of the heat medium flow regulating valve to cause a difference between a first temperature detected by the first temperature detector and a second temperature detected by the second temperature detector to be a predetermined temperature difference.   
     
     
         6 . The gas compression device according to  claim 1 , wherein the superheater is disposed above the gas-liquid separator in a vertical direction. 
     
     
         7 . The gas compression device according to  claim 6 , wherein a pipe through which the gas flows from the gas-liquid separator to the superheater is shorter than a pipe through which the gas flows from the superheater to the compressor. 
     
     
         8 . The gas compression device according to  claim 7 , wherein the superheater is disposed adjacent to the gas-liquid separator.