Patent classifications
B01D53/81
Method for desulphurizating and denitrating flue gas in integrated manner based on low-temperature adsorption
Provided is a method for desulphurizating and denitrating a flue gas in an integrated manner based on low-temperature adsorption. The method includes: decreasing a temperature of the flue gas below a room temperature by using a flue gas cooling system; removing moisture in the flue gas by using a dehumidification system; sending the flue gas to a SO.sub.2 and NO.sub.x adsorbing column system; and simultaneously adsorbing SO.sub.2 and NO.sub.x of the flue gas with a material of activated coke, activated carbon, a molecular sieve or diatom mud in the SO.sub.2 and NO.sub.x adsorbing column system to implement an integration of desulphurization and denitration of the flue gas based on the low-temperature adsorption. With the present method, SO.sub.2 and NO.sub.x of the flue gas can be adsorbed simultaneously in an environment having a temperature below the room temperature.
Method for desulphurizating and denitrating flue gas in integrated manner based on low-temperature adsorption
Provided is a method for desulphurizating and denitrating a flue gas in an integrated manner based on low-temperature adsorption. The method includes: decreasing a temperature of the flue gas below a room temperature by using a flue gas cooling system; removing moisture in the flue gas by using a dehumidification system; sending the flue gas to a SO.sub.2 and NO.sub.x adsorbing column system; and simultaneously adsorbing SO.sub.2 and NO.sub.x of the flue gas with a material of activated coke, activated carbon, a molecular sieve or diatom mud in the SO.sub.2 and NO.sub.x adsorbing column system to implement an integration of desulphurization and denitration of the flue gas based on the low-temperature adsorption. With the present method, SO.sub.2 and NO.sub.x of the flue gas can be adsorbed simultaneously in an environment having a temperature below the room temperature.
CYCLIC METHOD OF PRODUCING A HYDROGEN RICH STREAM AND/OR A CARBON MONOXIDE RICH STREAM
The invention relates to a cyclic method of producing a hydrogen rich and/or a carbon monoxide rich stream using different materials, a first solid material, a second solid material and a CO.sub.2 sorbent material.
In a first step a first gas stream comprising steam and at least one reductant is brought in contact with the three materials resulting in a hydrogen rich outlet stream.
In a second step, the captured CO.sub.2 from the first step is released and converted to CO to produce a CO rich outlet stream.
The invention further relates to an installation for producing a hydrogen rich and/or carbon monoxide rich stream.
CYCLIC METHOD OF PRODUCING A HYDROGEN RICH STREAM AND/OR A CARBON MONOXIDE RICH STREAM
The invention relates to a cyclic method of producing a hydrogen rich and/or a carbon monoxide rich stream using different materials, a first solid material, a second solid material and a CO.sub.2 sorbent material.
In a first step a first gas stream comprising steam and at least one reductant is brought in contact with the three materials resulting in a hydrogen rich outlet stream.
In a second step, the captured CO.sub.2 from the first step is released and converted to CO to produce a CO rich outlet stream.
The invention further relates to an installation for producing a hydrogen rich and/or carbon monoxide rich stream.
SYSTEM FOR THE CHEMICAL DECONTAMINATION OF CORROSIVE GASES
The use of a composition including at least one acido-basic neutralising agent for decontaminating an atmosphere contaminated by a corrosive gas, the acido-basic neutralising agent having at least 2 pKa's and being characterised by: pKa 1≤pKa 2, pKa 1>2, pKa 2<12, 4<½ (pKa 1+pKa 2)<10 pKa 1, representing the smallest of the basic pKa's and pKa 2 representing the largest of the acidic pKa's. Also, a method for decontaminating an atmosphere contaminated by a corrosive gas comprising the spraying of the neutralising agent, and to a decontamination device.
SYSTEM FOR THE CHEMICAL DECONTAMINATION OF CORROSIVE GASES
The use of a composition including at least one acido-basic neutralising agent for decontaminating an atmosphere contaminated by a corrosive gas, the acido-basic neutralising agent having at least 2 pKa's and being characterised by: pKa 1≤pKa 2, pKa 1>2, pKa 2<12, 4<½ (pKa 1+pKa 2)<10 pKa 1, representing the smallest of the basic pKa's and pKa 2 representing the largest of the acidic pKa's. Also, a method for decontaminating an atmosphere contaminated by a corrosive gas comprising the spraying of the neutralising agent, and to a decontamination device.
AMMONIUM-FUNCTIONALIZED POLYSULFONE COPOLYMERS FOR MOISTURE-SWING CO2 CAPTURE
A quaternary ammonium-functionalized poly(arylene ether sulfone) copolymer for moisture-swing CO2 capture, and a method for producing the same, is disclosed. The copolymer includes a polysulfone copolymer having a copolymerization unit based on diallyl bisphenal A (DABA) and has quaternary ammonium functionalities. The method for preparation of a quaternary ammonium-functionalized poly(arylene ether sulfone) copolymer includes reacting diallyl bisphenol A (DABA) with bisphenol A (BPA) and 4,4'-difluorodiphenyl sulfone (DFDPS) to form an allyl-modified poly(arylene ether sulfone) (PAES-co-APAES) copolymer, then modifying the PAES-co-APAES copolymer to convert the allyl functionalities to tertiary amines, forming tertiary amine-modified PAES (PAES-co-TAPAES) copolymer. The method also includes converting the tertiary amine of the PAES-co-TAPAES copolymer to quaternary ammonium, forming quaternary ammonium-modified PAES. These quaternary ammonium-modified PAES may be processed into membranes, films, and hollow fibers.
AMMONIUM-FUNCTIONALIZED POLYSULFONE COPOLYMERS FOR MOISTURE-SWING CO2 CAPTURE
A quaternary ammonium-functionalized poly(arylene ether sulfone) copolymer for moisture-swing CO2 capture, and a method for producing the same, is disclosed. The copolymer includes a polysulfone copolymer having a copolymerization unit based on diallyl bisphenal A (DABA) and has quaternary ammonium functionalities. The method for preparation of a quaternary ammonium-functionalized poly(arylene ether sulfone) copolymer includes reacting diallyl bisphenol A (DABA) with bisphenol A (BPA) and 4,4'-difluorodiphenyl sulfone (DFDPS) to form an allyl-modified poly(arylene ether sulfone) (PAES-co-APAES) copolymer, then modifying the PAES-co-APAES copolymer to convert the allyl functionalities to tertiary amines, forming tertiary amine-modified PAES (PAES-co-TAPAES) copolymer. The method also includes converting the tertiary amine of the PAES-co-TAPAES copolymer to quaternary ammonium, forming quaternary ammonium-modified PAES. These quaternary ammonium-modified PAES may be processed into membranes, films, and hollow fibers.
REGENERABLE VOC FILTERS WITH IMPROVED SELECTIVITY AND EFFICACY
The present invention relates, inter alia, to the use of porous crystalline solids constituted of a metal-organic framework (MOF) for the selective adsorption of aldehyde volatile organic compounds.
The MOF solids of the present invention can be used for the improved purification of dry or humid air, and for the manufacture of regenerable filters for air purification, particularly leak-free regenerable air filters.
REGENERABLE VOC FILTERS WITH IMPROVED SELECTIVITY AND EFFICACY
The present invention relates, inter alia, to the use of porous crystalline solids constituted of a metal-organic framework (MOF) for the selective adsorption of aldehyde volatile organic compounds.
The MOF solids of the present invention can be used for the improved purification of dry or humid air, and for the manufacture of regenerable filters for air purification, particularly leak-free regenerable air filters.