US2019170376A1PendingUtilityA1

Gas humidity regulating method and regulator

44
Assignee: EVONIK DEGUSSA GMBHPriority: Oct 4, 2017Filed: Oct 4, 2017Published: Jun 6, 2019
Est. expiryOct 4, 2037(~11.2 yrs left)· nominal 20-yr term from priority
B01D 2259/65F24F 2003/1458B01D 53/263F24F 3/1417B01D 53/28B01D 2259/4508B01D 2252/30F24F 6/02
44
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Claims

Abstract

[Problem to be Solved] To provide a gas humidity regulating method and a regulator that can regulate a temperature during humidity control and improve humidity-control efficiency. In an air humidity regulating method for gas subjected to treatment, a first medium 22 is caused to flow onto a heat exchanging pipe 17 of a gas-liquid contact part 18 in a dehumidifier 11 ; meanwhile, a second medium 24 is passed through the heat exchanging pipe 17 . In this state, air is fed into a gas-liquid contact case 13 from an inlet port 14 and gas-liquid contact is made by the first medium 22 on the gas-liquid contact part 18 so as to absorb water content from the air into the first medium 22 . The first medium 22 contains an ionic liquid having high absorbency. The temperature of the first medium 22 is regulated by the second medium 24 . After that, treated air is discharged from an outlet port 15 of the gas-liquid contact case 13.

Claims

exact text as granted — not AI-modified
1 - 12 . (canceled) 
     
     
         13 . A gas humidity regulating method comprising:
 a) feeding gas subjected to treatment from an inlet port < 14 > of a gas-liquid contact case < 13 > into the gas-liquid contact case < 13 > while a first medium < 22 >, serving as a liquid desiccant, is disposed on a gas-liquid contact part < 18 > and a second medium < 24 > for temperature regulation is passed through a heat exchanging pipe < 17 >, the gas-liquid contact part < 18 > including the heat exchanging pipe < 17 > in the gas-liquid contact case < 13 > that has the inlet port < 14 > for feeding gas subjected to treatment and an outlet port < 15 > for discharging treated gas;   b) absorbing water content into the first medium < 22 > from the gas subjected to treatment while making a gas-liquid contact with the first medium < 22 > on the gas-liquid contact part < 18 >; and   c) discharging the treated gas from the outlet port < 15 >.   
     
     
         14 . The gas humidity regulating method of  claim 13 , wherein the first medium is a mixed solution of water and a solution mainly composed of an ionic liquid. 
     
     
         15 . The gas humidity regulating method of  claim 14 , wherein the ionic liquid is expressed by a chemical formula C+A− where C+ is 1,3-dialkylimidazolium cation and A− is acid anion. 
     
     
         16 . The gas humidity regulating method of  claim 15 , wherein an alkyl group of the 1,3-dialkylimidazolium cation is a methyl group or an ethyl group, and the acid anion is carboxylate anion, sulfonate anion, or phosphate anion. 
     
     
         17 . The gas humidity regulating method of  claim 14  wherein the ionic liquid in the first medium < 22 > has a concentration of 60 to 90 mass %. 
     
     
         18 . The gas humidity regulating method of  claim 14 , wherein when the ionic liquid has a concentration of 80 mass %, and the first medium < 22 > has a saturation vapor pressure of 1.9 kPa or less and a viscosity of 13 to 21 mPa·s at 35° C. 
     
     
         19 . The gas humidity regulating method of  claim 13 , wherein the first medium < 22 > has a flow rate of 0.5 to 3 kg/m 2 ·s. 
     
     
         20 . The gas humidity regulating method of  claim 15 , wherein the ionic liquid in the first medium < 22 > has a concentration of 60 to 90 mass %. 
     
     
         21 . The gas humidity regulating method of  claim 20 , wherein the ionic liquid has a concentration of 80 mass %, and the first medium < 22 > has a saturation vapor pressure of 1.9 kPa or less and a viscosity of 13 to 21 mPa·s at 35° C. 
     
     
         22 . The gas humidity regulating method of  claim 21 , wherein the first medium < 22 > has a flow rate of 0.5 to 3 kg/m 2 ·s. 
     
     
         23 . The gas humidity regulating method of  claim 16  wherein the ionic liquid in the first medium < 22 > has a concentration of 60 to 90 mass %. 
     
     
         24 . The gas humidity regulating method of  claim 23 , wherein the ionic liquid has a concentration of 80 mass %, and the first medium < 22 > has a saturation vapor pressure of 1.9 kPa or less and a viscosity of 13 to 21 mPa·s at 35° C. 
     
     
         25 . The gas humidity regulating method of  claim 24 , wherein the first medium < 22 > has a flow rate of 0.5 to 3 kg/m 2 ·s. 
     
     
         26 . A gas humidity regulator < 10 >, wherein:
 a) a heat exchanging pipe < 17 > and a fin < 16 > are disposed as the gas-liquid contact part < 18 > in a meandering manner in the gas-liquid contact case < 13 >;   b) the contact case includes an inlet port < 14 > for feeding gas subjected to treatment and an outlet port < 15 > for discharging treated gas;   c) the regulator < 10 > includes a sprinkling pipe < 21 > provided above the heat exchanging pipe < 17 > so as to spray the first medium < 22 > onto the heat exchanging pipe < 17 >; and   d) a second medium < 24 > is passed through the heat exchanging pipe < 17 >.   
     
     
         27 . The gas humidity regulator < 10 > of  claim 26 , further comprising a dehumidifier < 11 > and a humidifier < 12 > in a pair;
 a first connecting pipe < 26 > that passes the dehumidified first medium < 22 > between the gas-liquid contact case < 13 > of the dehumidifier < 11 > and the sprinkling pipe < 21 > of the humidifier < 12 >; and 
 a second connecting pipe < 28 > that passes the humidified first medium < 22 > between the gas-liquid contact case < 13 > of the humidifier < 12 > and the sprinkling pipe < 21 > of the dehumidifier < 11 >. 
 
     
     
         28 . The gas humidity regulator < 10 > of  claim 26 , wherein the heat exchanging pipe < 17 > and the fin < 16 > are made of metals. 
     
     
         29 . The gas humidity regulator < 10 > of  claim 28 , wherein the heat exchanging pipe < 17 > and the fin < 16 > are made of aluminium or stainless steel. 
     
     
         30 . The gas humidity regulator < 10 > of  claim 27 , wherein the heat exchanging pipe < 17 > and the fin < 16 > are made of metals. 
     
     
         31 . The gas humidity regulator < 10 > of  claim 30 , wherein the heat exchanging pipe < 17 > and the fin < 16 > are made of aluminium or stainless steel.

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