Title: Preparation of sorbent pellets with high integrity for sorption of CO.sub.2 from gas streams

Abstract

Method for the production of a CO.sub.2 sorbent prepared by integrating a clay substrate, basic alkali salt, amine liquid, hydraulic binder, and a liquid binder. 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 substrate and basic alkali salt may be combined in a solid-solid heterogeneous mixture and followed by introduction of the amine liquid. Alternatively, an alkaline solution may be blended with the amine solution prior to contacting the clay substrate. The clay-alkali-amine CO.sub.2 sorbent is particularly advantageous for low temperature CO.sub.2 removal cycles in a gas stream having a CO.sub.2 concentration less than around 2000 ppm and an oxygen concentration around 21%, such as air.

Inventors:

Siriwardane, Ranjani V.

Issue Date:

Tue May 10 00:00:00 EDT 2016

Research Org.:

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

Sponsoring Org.:

USDOE

OSTI Identifier:

1252464

Patent Number(s):

9333485

Application Number:

14/695,069

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

B01D2253/112 - Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
B01D2253/20 - Organic adsorbents
B01D2253/25 - Coated, impregnated or composite adsorbents
B01D2257/504 - Carbon dioxide
B01D53/02 - by adsorption, e.g. preparative gas chromatography {
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

B01J20/041 - {Oxides or hydroxides}
B01J20/043 - {Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite}
B01J20/045 - {containing sulfur, e.g. sulfates, thiosulfates, gypsum}
B01J20/048 - {containing phosphorus, e.g. phosphates, apatites, hydroxyapatites}
B01J20/06 - comprising oxides or hydroxides of metals not provided for in group B01J20/04
B01J20/10 - comprising silica or silicate
B01J20/22 - comprising organic material
B01J20/223 - {containing metals, e.g. organo-metallic compounds, coordination complexes}
B01J20/26 - Synthetic macromolecular compounds
B01J20/2805 - {Sorbents inside a permeable or porous casing, e.g. inside a container, bag or membrane}
B01J20/30 - Processes for preparing, regenerating, or reactivating
B01J20/3042 - {Use of binding agents
B01J20/3287 - {Layers in the form of a liquid}
B01J20/3433 - {of sorbents or filter aids other than those covered by B01J20/3408 - B01J20/3425}
B01J20/3458 - {in the gas phase}

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

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Resource Type:

Patent

Resource Relation:

Patent File Date: 2015 Apr 24

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY