Trickle-bed scrubber and scrubbing process with woodchip packed bed
OwnerSamira LOTFI, Weiguo MA +2inventors
InventorsSamira LOTFI, Weiguo MA, Kevin AUSTIN, James BUTLER
Life of this patent
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Abstract
A scrubbing medium, such as cooking oil, is trickle flowed through a packing material that includes woodchips. Gas, such as from a gasifier, is flowed through the packing material and the scrubbing medium to scrub the gas of tar and particulates. The gas may further flow through a polishing material, such as charcoal. The woodchips include a mixture of coarse and fine woodchips with at least about 25% fine woodchips. A flow of scrubbed gas with reduced tar and particulates in outputted.
Claims27
A process comprising:
- trickle flowing a scrubbing medium through a packing material that includes woodchips;
- flowing a gas through the packing material that includes woodchips and the scrubbing medium to scrub the gas of tar and particulates, wherein the woodchips include a mixture of coarse and fine woodchips with at least about 25% fine woodchips;
- and
- outputting a flow of scrubbed gas with reduced tar and particulates.
A scrubber apparatus comprising:
- a hollow body;
- a liquid inlet positioned at the hollow body;
- a liquid outlet positioned at the hollow body
- a gas inlet positioned at the hollow body;
- a gas outlet positioned at the hollow body;
- and
- a packed-bed support positioned within the hollow body and configured to support a bed of packing material that includes a mixture of coarse and fine woodchips with at least about 25% fine woodchips;
- wherein the liquid inlet and liquid outlet are arranged to provide a flow of scrubbing medium through the bed of packing material that includes the mixture of coarse and fine woodchips;
- and
- wherein the gas inlet and gas outlet are arranged to provide a flow of gas through the bed of packing material that includes the mixture of coarse and fine woodchips and the scrubbing medium therein.
Use of a packed bed with a scrubbing medium in a scrubber to scrub a producer gas of tar and particulates, wherein the packed bed includes a mixture of coarse and fine woodchips with at least about 25% fine woodchips.
Dependencies are inferred from the claim text.