Title: CO.sub.2 removal sorbent composition with high chemical stability during multiple cycles

Abstract

Disclosed herein is a clay-alkali-amine CO.sub.2 sorbent composition prepared by integrating a clay substrate, basic alkali salt, and amine liquid. The basic alkali salt is present relative to the clay substrate in a weight ratio of from about 1 part to about 50 parts per 100 parts of the clay substrate. The amine liquid is present relative to a clay-alkali combination in a weight ratio of from about 1 part to about 10 parts per 10 parts of the clay-alkali combination. The clay-alkali-amine C02 sorbent is particularly advantageous for low temperature CO.sub.2 removal cycles in a gas stream having a C02 concentration less than around 2000 ppm and an oxygen concentration around 21%, such as air.

Inventors:

Siriwardane, Ranjani V.; Rosencwaig, Shira

Issue Date:

2015-09-22

Research Org.:

National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1221398

Patent Number(s):

9138683

Application Number:

14/297,848

Assignee:

U.S. Department of Energy (Washington, DC)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D53/52 - Hydrogen sulfide
B01D2253/11 - Clays

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J20/30 - Processes for preparing, regenerating, or reactivating
B01J20/04 - comprising compounds of alkali metals, alkaline earth metals or magnesium

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D53/80 - Semi-solid phase processes, i.e. by using slurries

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J20/041 - {Oxides or hydroxides}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

Y02A50/20 - Air quality improvement or preservation

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D2252/20489 - with two or more hydroxyl groups
B01D2251/304 - of sodium
B01D2257/504 - Carbon dioxide

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J20/2805 - {Sorbents inside a permeable or porous casing, e.g. inside a container, bag or membrane}
B01J20/06 - comprising oxides or hydroxides of metals not provided for in group B01J20/04

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D53/02 - by adsorption, e.g. preparative gas chromatography {

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J20/3236 - {containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts}

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D2252/20405 - Monoamines
B01D2251/604 - Hydroxides
B01D53/526 - {Mixtures of hydrogen sulfide and carbon dioxide}

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J20/043 - {Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite}
B01J20/3248 - {the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such}
B01J20/3204 - {Inorganic carriers, supports or substrates}
B01J20/12 - Naturally occurring clays or bleaching earth
B01J2220/46 - Materials comprising a mixture of inorganic and organic materials

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D53/62 - Carbon oxides

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J20/3251 - {comprising at least two different types of heteroatoms selected from nitrogen, oxygen or sulphur}
B01J20/22 - comprising organic material

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Resource Type:

Patent

Resource Relation:

Patent File Date: 2014 Jun 06

Country of Publication:

United States

Language:

English

Subject:

54 ENVIRONMENTAL SCIENCES