Adsorbent for adsorption heat pumps, production method thereof, and adsorption heat pump

• US 9,975,108 B2
• Filed: 10/29/2015
• Issued: 05/22/2018
• Est. Priority Date: 05/22/2013
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Manabe, Toshio, Yoshida, Hiroaki, Aso, Noriyasu
• Primary Examiner(s): Hendrickson, Stuart
• Application Number:
  US14/926,543
• Publication Number:
  US 20160045892A1
• Time in Patent Office: 936 Days
• CPC Class Codes: B01J 20/20 comprising free carbon; comprising carbon obtained by carbonising processes
• CPC Class Codes: B01J 20/22 comprising organic material
• CPC Class Codes: B01J 20/28066 being more than 1000 m2/g
• CPC Class Codes: B01J 20/3078 Thermal treatment, e.g. calcining or pyrolizing
• CPC Class Codes: B01J 20/3204 Inorganic carriers, supports or substrates
• CPC Class Codes: B01J 20/3251 comprising at least two different types of heteroatoms selected from nitrogen, oxygen or sulphur
• CPC Class Codes: B01J 20/3287 Layers in the form of a liquid
• CPC Class Codes: C01B 32/30 Active carbon
• CPC Class Codes: F25B 17/083 with two or more boiler-sorbers operating alternately
• CPC Class Codes: F25B 30/04 of the sorption type
• CPC Class Codes: Y02P 20/129 Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Abstract

An adsorbent for adsorption heat pumps, containing: activated carbon; and organic molecules each containing at least one hydrophilic functional group, where the organic molecules are provided in pores of the activated carbon.

Claims

1. An adsorbent for adsorption heat pumps, the adsorbent comprising:

activated carbon; and

organic molecules each containing at least one hydrophilic functional group, where the organic molecules are provided in pores of the activated carbon,

wherein the organic molecule is at least one selected from the group consisting of squaric acid, sulfoisophthalic acid, and benzene tetracarboxylic acid.

2. The adsorbent according to claim 1, wherein a specific surface area of the activated carbon is 1,000 m²/g to 2,500 m²/g.

3. An adsorption heat pump, comprising:

an adsorbent for adsorption heat pumps;

an evaporator configured to evaporate a liquid adsorbate to turn the liquid adsorbate into a gas adsorbate;

a condenser, which is connected to the evaporator, and is configured to condense the gas adsorbate to turn the gas adsorbate into the liquid adsorbate; and

two adsorbers, which are connected to the evaporator and the condenser, and each contain the adsorbent capable of adsorbing and desorbing the adsorbate;

wherein the adsorbent contains;

activated carbon; and

organic molecules each containing at least one hydrophilic functional group, where the organic molecules are provided in pores of the activated carbon,

wherein the organic molecule is at least one selected from the group consisting of squaric acid, sulfoisophthalic acid, and benzene tetracarboxylic acid.