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US 8,383,071 B2Granted
Process for dilute phase injection of dry alkaline materials
AssigneeADA Environmental Solutions, LLC
InventorsMartin A. Dillon, Gregory M. Filippelli
Life of this patent
Estimating the term…
Abstract
The present disclosure is directed to the introduction of an additive to a contaminated gas stream using an additive introduction system including one or more of a compressor, a cooled lance, and an educator nozzle on the lance to inhibit scaling from the additive or a derivative thereof.
Claims38
A method, comprising:
- compressing, by a compressor, a carrier gas to form a compressed carrier gas, wherein the compressed carrier gas comprises a lower partial pressure of water vapor and has a lower dew point than the carrier gas before the compressing step;
- contacting an additive with the compressed carrier gas to form an additive-containing fluid;
- and
- introducing the additive-containing fluid into a contaminated gas stream.
1 more element
A system, comprising:
- a carrier gas treatment system configured to compress a carrier gas and to dry the compressed carrier gas to form a treated carrier gas stream wherein the compressed carrier gas comprises a lower partial pressure of water vapor and has a lower dew point than the carrier gas before the compression;
- a mixing system configured to contact additive particles with the treated carrier gas stream and form an additive-containing fluid;
- and
- a delivery system configured to introduce the additive-containing fluid into the contaminated gas stream.
1 more element
A system, comprising:
- at least one lance for receiving an additive-containing fluid, the additive, above a scaling temperature, causing scaling on an interior of the lance, and introducing the additive-containing fluid into a contaminated gas stream, the at least one lance extending into the contaminated gas stream, the contaminated gas stream having a temperature above about 95° F., wherein the at least one lance is cooled by a cooling medium to maintain an interior of the at least one lance at a temperature below the scaling temperature to inhibit scaling, the scaling temperature being below a temperature of the contaminated gas stream.
A system, comprising:
- at least one lance for receiving an additive-containing fluid and introducing the additive-containing fluid into a contaminated gas stream, an end of the at least one lance comprising an eductor nozzle, wherein the at least one lance receives a pressurized motive gas and the additive-containing fluid, wherein a flow of the pressurized motive gas through the educator nozzle draws the additive-containing fluid from an interior flow pathway of the at least one lance and mixes the pressurized motive gas with the additive-containing fluid, whereby the mixture of the pressurized motive gas and additive-containing fluid is discharged from the at least one lance into the contaminated gas stream.
A method, comprising:
- detecting, by a processor, a stimulus associated with cleaning of an additive introduction system, the additive introduction system delivering an additive into a contaminated gas stream;
- terminating, by the processor, a supply of additive while continuing to supply a carrier gas to the additive introduction system;
- determining, by the processor, whether a gas flow is acceptable;
- when the gas flow is not acceptable, terminating, by the processor, the supply of the carrier gas to the additive introduction system;
- and
- passing a purge gas through the additive introduction system to remove deposited additive or a derivative thereof.
3 more elements
A method, comprising:
- detecting, by a processor, a stimulus associated with cleaning of an additive introduction system, the additive introduction system delivering an additive into a contaminated gas stream;
- terminating, by the processor, a supply of additive to the additive introduction system;
- and
- passing a chemical cleaner through the additive introduction system, the cleaner removing substantially deposits of the additive and/or an additive derivative from the additive introduction system.
1 more element
A method, comprising:
- treating a carrier gas to reduce a carrier gas dew point and carrier gas temperature to sufficient levels to substantially inhibit water-based hydration interactions with an alkaline additive material and form a treated carrier gas;
- contacting the treated carrier gas with an alkaline additive material to form an additive-containing fluid having no more than the reduced carrier gas dew point and carrier gas temperature;
- and
- introducing the additive-containing fluid into a contaminated gas stream.
1 more element
Dependencies are inferred from the claim text.