Method of removing organic contaminants
AssigneeContaminant Separations, Inc.
InventorDavid Mauterer
Life of this patent
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Abstract
A method of removing organic contaminants from a process gas such as raw, untreated landfill gas is disclosed. The steps involve collecting the process gas that includes organic contaminants for removal. An absorption liquid such as a terpene, is injected as a mist into the process gas to form a two-state absorption liquid and process gas fluid. The two-state absorption liquid and gas fluid communicates through a heat exchange module for absorption of organic contaminants in the process gas by the absorption liquid resulting in a cleaned process gas. The absorption liquid then is separated from the cleaned process gas.
Claims11
A method of removing organic contaminants from a process gas for purification thereof, comprising the steps of:
- (a) collecting a process gas having organic contaminants for removal;
- (b) injecting an absorption liquid into the process gas to form a two-state mixture of the absorption liquid and the process gas;
- (c) communicating the two-state absorption liquid and gas mixture concurrently through a heat exchange module for absorption of said organic contaminants in the process gas by the absorption liquid resulting in a cleaned process gas;
- and
- (d) separating the absorption liquid from the cleaned process gas, whereby the cleaned process gas, having said organic contaminants removed, is purified.
A method of removing organic contaminants from a process gas for purification thereof, comprising the steps of:
- (a) collecting a process gas having organic contaminants for removal;
- (b) injecting a liquid terpene as a mist into the process gas at a rate of about 1:10 process gas to terpene liquid by weight to form a two-state mixture of the liquid terpene and process gas;
- (c) passing the two-state liquid terpene and process gas mixture along a flow path defined by spaced-apart channels disposed transverse to the flow path in at least two heat exchange modules stacked together in a series;
- (d) communicating a refrigerant through the channels, the refrigerant in one heat exchange module flowing in a first direction and the refrigerant in the adjacent heat exchange module flowing in a second opposite direction,
- whereby the liquid terpene, being substantially cooled uniformly across the series of two heat exchange modules, absorbs said organic contaminants from the process gas to result in a cleaned process gas;
- and
- (e) separating the liquid terpene from the cleaned process gas,
- whereby the cleaned process gas, having said organic contaminants removed, is purified.
Dependencies are inferred from the claim text.