# US 11,896,928 B2 · Integrated heat management systems and processes for adsorbed natural gas storage facilities > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,896,928 B2 - Document ID: US11896928B2 - Status: Granted - Kind: B2 - Application number: 18/299,741 - Filed: 2023-04-13 - Published: 2023-08-03 - Granted: 2024-02-13 - Earliest claimed: 2021-01-08 - Assignees: Saudi Arabian Oil Company - Applicants: Saudi Arabian Oil Company - Inventors: Mohammed Alhashim; Calogero Migliore; Yuguo Wang; Rashid Othman; Ahmad Bahamdan - Web page: https://patentgrep.com/patent/US11896928B2 ## CPC - B01D 53/0438: {Cooling or heating systems} - B01D 3/007: {Energy recuperation; Heat pumps} - B01D 53/0462: {Temperature swing adsorption} - F17C 11/007: {for hydrocarbon gases, such as methane or natural gas, propane, butane or mixtures thereof [LPG]} - F25B 17/08: the absorbent or adsorbent being a solid, e.g. salt (F25B17/12 takes precedence) - F25B 27/007: {in sorption type systems} - B01D 2253/102: Carbon - B01D 2253/108: Zeolites - B01D 2253/112: Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106 - B01D 2256/24: Hydrocarbons - 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) - F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25) - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS ## Abstract Systems and methods for heat exchange during gas adsorption and desorption cycling, one method including removing heat from an adsorbent material during gas adsorption to the adsorbent material; storing the removed heat for later use during desorption of gas from the adsorbent material; heating the adsorbent material during desorption of gas from the adsorbent material using at least a portion of the removed heat; and recycling heat during the step of heating to prepare a working fluid for the step of removing heat via temperature reduction of the working fluid. ## Claims ### Claim 1 A system for heat exchange during gas adsorption and desorption cycling, the system comprising: a gas adsorption unit, the gas adsorption unit in fluid communication with a cooling loop adapted to cool adsorbent material of the gas adsorption unit during an adsorption cycle, and in fluid communication with a heating loop adapted to heat the adsorbent material of the gas adsorption unit during a desorption cycle, where the adsorbent material is selected from the group consisting of: activated carbon, zeolites, membranes, metal organic frameworks, and combinations of the same, wherein the cooling loop maintains the temperature of the adsorbent material between about 25° C. and about 45° C. and where the heating loop maintains the temperature of the adsorbent material between about 45° C. and about 55° C.; a heat pump, wherein the heat pump is adapted to remove heat from the cooling loop and provide the removed heat to the heating loop; a first insulated storage tank to store chilled working fluid for the cooling loop; and a second insulated storage tank to store heated working fluid for the heating loop. ### Claim 2 (depends on 1) The system of claim 1, the system further comprising a chiller fluidly coupled to the first insulated storage tank adapted to lower the temperature of stored chilled working fluid prior to use in the cooling loop. ### Claim 3 (depends on 2) The system of claim 2, wherein the chiller comprises an air cooled chiller. ### Claim 4 (depends on 1) The system of claim 1, the system further comprising an auxiliary heater coupled to the second insulated storage tank to increase the temperature of stored heated working fluid prior to use in the heating loop. ### Claim 5 (depends on 1) The system according to claim 1, wherein the heat pump comprises an evaporator, a compressor, a condenser, and an expansion valve, and wherein the evaporator, the compressor, the condenser, and the expansion valve are fluidly coupled for a refrigerant fluid to travel therebetween. ### Claim 6 (depends on 1) The system according to claim 1, wherein the chilled working fluid comprises water. ### Claim 7 (depends on 1) The system according to claim 1, wherein the adsorbent material is selected from the group consisting of: activated carbon, zeolites, membranes, metal organic frameworks, and combinations of the same. ### Claim 8 (depends on 1) The system according to claim 1, wherein the adsorbent material is adapted to adsorb natural gas. ### Claim 9 (depends on 1) The system according to claim 1, further comprising a heat exchanger fluidly coupled to the second insulated storage tank and the heat pump, the heat exchanger adapted to remove heat from heated working fluid exiting the gas adsorption unit and recycle heat to the heating loop. ### Claim 10 (depends on 9) The system according to claim 9, wherein the heat exchanger comprises a shell and tube heat exchanger. ### Claim 11 (depends on 1) The system according to claim 1, the system further comprising renewable energy to power at least a portion of the system, the renewable energy selected from the group consisting of: solar power, wind power, and combinations thereof. ### Claim 12 (depends on 11) The system according to claim 11, wherein the renewable energy includes solar power, and the solar power is spilled solar power. ### Claim 13 (depends on 1) The system according to claim 1, where the system is powered by a portion of natural gas adsorbed to the adsorbent material, the portion of natural gas less than 5 vol. % of the total amount of adsorbed natural gas. ### Claim 14 (depends on 1) The system according to claim 1, where the system is powered by a portion of natural gas adsorbed to the adsorbent material, the portion of natural gas less than 3 vol. % of the total amount of adsorbed natural gas. ### Claim 15 (depends on 1) The system according to claim 1, further comprising a third insulated storage tank to store heated working fluid for the heating loop, the third insulated storage tank fluidly located between the heat pump and the gas adsorption unit, wherein the third insulated storage tank is adapted to store working fluid heated by the heat pump.