Process for producing high-carbon biogenic reagents
US-10174267-B2 · Jan 8, 2019 · US
Methods and apparatus for producing activated carbon from biomass through carbonized ash intermediates
US11213801B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11213801-B2 |
| Application number | US-201715697659-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 7, 2017 |
| Priority date | Oct 24, 2013 |
| Publication date | Jan 4, 2022 |
| Grant date | Jan 4, 2022 |
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- Title
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Abstract
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Biomass combustion processes may be controlled to intentionally generate a carbon-containing ash, from which activated carbon is produced according to the methods disclosed. Some variations provide an economically attractive process for producing an activated carbon product, the process comprising combusting a carbon-containing feedstock to generate energy, combustion products, and ash, wherein the ash contains at least 10 wt % carbon; separating and recovering carbon contained in said ash; and further activating or treating the separated carbon, to generate an activated carbon product. Many process variations are disclosed, and uses for the activated carbon product are disclosed.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of using a biogenic activated carbon composition to reduce emissions, the method comprising: (a) providing activated carbon particles comprising a biogenic activated carbon composition; (b) providing a gas-phase emissions stream comprising at least one selected contaminant; (c) providing an additive selected to assist in removal of the at least one selected contaminant from the gas-phase emissions stream; (d) introducing the activated carbon particles and the additive into the gas-phase emissions stream, thereby adsorbing at least a portion of the selected contaminant onto the activated carbon particles, thereby generating contaminant-adsorbed carbon particles within the gas-phase emissions stream; (e) separating at least a portion of the contaminant-adsorbed carbon particles from the gas-phase emissions stream, to produce a contaminant-reduced gas-phase emissions stream; and thermally oxidizing the contaminant-adsorbed carbon particles, thereby regenerating the activated carbon.
Assignees
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Classifications
Chemical or biological purification of waste gases · CPC title
the feedstock being materials of biological origin · CPC title
- B01J20/3078Primary
Thermal treatment, e.g. calcining or pyrolizing · CPC title
comprising free carbon; comprising carbon obtained by carbonising processes · CPC title
characterised by gaseous activating agents · CPC title
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Frequently asked questions
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- What does patent US11213801B2 cover?
- Biomass combustion processes may be controlled to intentionally generate a carbon-containing ash, from which activated carbon is produced according to the methods disclosed. Some variations provide an economically attractive process for producing an activated carbon product, the process comprising combusting a carbon-containing feedstock to generate energy, combustion products, and ash, wherein…
- Who is the assignee on this patent?
- Carbon Tech Holdings Llc
- What technology area does this patent fall under?
- Primary CPC classification B01J20/3078. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 04 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).