Ada Carbon Solutions, LLC

Jacob B Lowring

Roger H Cayton

Joseph M Wong

Robert B Huston

Christopher Vizcaino

Mowen Li

Sarah G McMurray

Frederick S Cannon

Jacqueline Cecil De Peyer

Möwen Li

Brian Leen

An activated carbon sorbent composition comprising activated carbon and a passivation agent, wherein the activated carbon sorbent composition exhibits reduced self-heating or auto-ignition properties as compared to the activated carbon. The activated carbon sorbent composition may be utilized to sequester contaminants such as mercury from a flue gas stream. The passivation agent includes a sulfur species, and may be a sulfur oxide compound, a sulfide compound, or an organic sulfur compound. Methods for the manufacture of the activated carbon sorbent composition and for the sequestration of contaminants in a flue gas stream using the composition are also disclosed.

Methods for the treatment of flue gas streams using sorbent compositions with reduced auto-ignition properties

A multi-functional composition of matter that is useful for injection into a flue gas stream to rapidly and efficiently remove mercury from the flue gas streams, particularly at above average flue stream temperatures of about 340&#xb0; F. or higher. The multi-functional composition of matter may include a fixed carbon content of at least about 20 wt. %, a mineral content of from about 20 wt. % to about 50 wt. %, a sum of micropore plus mesopore volume of at least about 0.20 cc/g, a micropore volume to mesopore volume ratio of at least about 0.7, and a tapped density of not greater than about 0.575 g/ml. These compositions may be further characterized by number of particles per gram of the composition of matter such that the composition may have at least about 0.8 billion particles per gram, or even as many as 1.5 billion particles per gram. These physical and chemical properties may enhance (1) the oxidation reaction kinetics for the oxidation of mercury species, (2) frequency of contact events, and (3) capture and sequestration of mercury, to achieve efficient mercury capture by the composition even in high temperature flue gas streams.

Multi-functional composition of matter for removal of mercury from high temperature flue gas streams

Methods for the manufacture of sorbent compositions, sorbent compositions and methods for using the sorbent compositions. The methods include the utilization of an acidic halogen solution as a source of a halogen species that is dispersed on a solid sorbent. The use of the acidic halogen solution results in a highly active halogen species that demonstrates improved efficacy for the removal of heavy metal(s) from a flue gas. The sorbent composition includes a substantially amorphous halogen species associated with a solid sorbent such as powdered activated carbon (PAC).

Sorbent compositions having amorphous halogen species for the sequestration of contaminants

Methods for the treatment of flue gas streams using sorbent compositions with reduced auto ignition properties

A sorbent composition that is useful for injection into a flue gas stream of a coal burning furnace to efficiently remove mercury from the flue gas stream. The sorbent composition may include a sorbent with an associated ancillary catalyst component that is a catalytic metal, a precursor to a catalytic metal, a catalytic metal compound or a precursor to a catalytic metal compound. Alternatively, a catalytic metal or metal compound, or their precursors, may be admixed with the coal feedstock prior to or during combustion in the furnace, or may be independently injected into a flue gas stream. A catalytic promoter may also be used to enhance the performance of the catalytic metal or metal compound.

Catalytically enhanced compositions for efficient removal of contaminants in flue gas streams

Methods for the treatment of a flue gas stream using catalytically-enhanced sorbent compositions

Methods for the treatment of a flue gas stream using sorbent compositions having amorphous halogen species

Sorbent compositions including sorbent particles of a small particle sized sorbent with increased pneumatic conveyance properties. The sorbent compositions have relatively small median particle size and have a controlled particle size distribution (PSD). Specifically, the sorbent compositions include a relatively small percentage of very fine particles, such as a small percentage of particles having a particle size of not greater than about 5 &#x3bc;m. The sorbent compositions are particularly useful for the treatment of a flue gas stream to remove mercury from the flue gas stream.

Sorbent compositions having pneumatic conveyance capabilities

Methods for the manufacture of a sorbent composition having a catalyst component

Method for treating a flue gas stream with a sorbent composition having pneumatic conveyance capabilities

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Coushatta, LA, United States of America

Jacob B Lowring