# US 2014/0190349 A1 · Dehydration equipment, gas compression system, and dehydration method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190349 A1 - Document ID: US20140190349A1 - Status: Published application - Kind: A1 - Application number: 13/859,339 - Filed: 2013-04-09 - Published: 2014-07-10 - Earliest claimed: 2013-01-10 - Assignees: Mitsubishi Heavy Industries, Ltd. - Applicants: Mitsubishi Heavy Industries, Ltd. - Inventors: Masayuki Inui; Takahito Yonekawa; Koji Nakayama; Tatsuya Tsujiuchi; Yoshiki Sorimachi - Web page: https://patentgrep.com/patent/US20140190349A1 ## CPC - B01D 53/261: {by adsorption} - B01D 53/0438: {Cooling or heating systems} - B01D 53/265: {by refrigeration (condensation)} - B01D 2259/402: using two beds - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract In a dehydration equipment, a regenerative gas heater heats a portion of CO2 gas dehydrated in an adsorption tower that is performing an adsorption process and supplies the gas to an adsorption tower that is performing a regeneration process. A regenerative gas preheater performs heat exchange between the CO2 gas that will be supplied to a regenerative gas heater and the CO2 gas sent out from the adsorption tower that is performing the regeneration process. Then, in the dehydration equipment, a regenerative gas cooler cools the CO2 gas that has been sent out from the adsorption tower that is performing the regeneration process and exchanged heat, separates water from the cooled CO2 gas, and returns the resulting gas to the adsorption tower. Thus, the dehydration equipment can prevent an increase in utility consumption due to the regeneration process. ## Claims ### Claim 1 A dehyderation equipment in which a plurality of adsorption towers that alternately perform an adsorption process, in which water contained in gas is adsorbed, and a regeneration process, in which the adsorbed water is desorbed, are provided in parallel in a gas supply line and a predetermined adsorption tower performs the adsorption process while the other adsorption tower performs the regeneration process, the dehyderation equipment comprising: a heating unit that heats a portion of the gas dehyderated in the adsorption tower that is performing the adsorption process and supplies the gas to the adsorption tower that is performing the regeneration process; a cooling unit that cools the gas sent out from the adsorption tower that is performing the regeneration process; a gas-liquid separating unit that separates condensed water from the gas cooled by the cooling unit and returns the resulting gas after separating water therefrom to the adsorption tower; and a preheating unit that performs heat exchange between the gas that has been sent out from the adsorption tower that is performing the regeneration process and will be supplied to the cooling unit and the gas that will be supplied to the heating unit. ### Claim 2 (depends on 1) The dehyderation equipment according to claim 1, wherein the heating unit controls the degree of heating of the gas according to the amount of heat exchange performed by the preheating unit. ### Claim 3 (depends on 1) The dehyderation equipment according to claim 1, further comprising a compressor that is provided between the gas-liquid separating unit and the adsorption tower and pressurizes the gas used in the regeneration process so as to compensate for pressure loss caused in the regeneration process. ### Claim 4 (depends on 1) The dehyderation equipment according to claim 1, wherein the preheating unit includes a plurality of preheating units. ### Claim 5 (depends on 1) A gas compression system comprising: a plurality of compressors that compress gas; and the dehyderation equipment according to claim 1, wherein the gas compressed by a predetermined compressor is dehyderated by the dehyderation equipment, and the dehyderated gas is further compressed by the compressor provided in the subsequent stage of the predetermined compressor. ### Claim 6 A dehyderation method in which providing a plurality of adsorption towers that alternately perform an adsorption process, in which water contained in gas is adsorbed, and a regeneration process, in which the adsorbed water is desorbed, are provided in parallel in a gas supply line and a predetermined adsorption tower performs the adsorption process while the other adsorption tower performs the regeneration process, the dehyderation method comprising: heating a portion of the gas dehyderated in the adsorption tower that is performing the adsorption process with a heating unit and supplying the gas to the adsorption tower that is performing the regeneration process; performing heat exchange between the gas that will be supplied to the heating unit and the gas sent out from the adsorption tower that is performing the regeneration process with a preheating unit; cooling the gas sent out from the adsorption tower that is performing the regeneration process and exchanged heat in the preheating unit with a cooling unit; and separating condensed water from the gas cooled by the cooling unit and returning the resulting gas after separating water therefrom to the adsorption tower with a gas-liquid separating unit.