Method of separating and de-watering fine particles
US-9518241-B2 · Dec 13, 2016 · US
Coal for boiler fuel
US2016168496A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016168496-A1 |
| Application number | US-201414906342-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 9, 2014 |
| Priority date | Jul 31, 2013 |
| Publication date | Jun 16, 2016 |
| Grant date | — |
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Abstract
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To provide a coal for a boiler fuel ( 10 ) used as a fuel for a coal-fired boiler, the coal for a boiler fuel comprising a reformed coal ( 10 ) comprising a raw coal ( 2 ) and calcium ion-exchanged on a raw coal ( 2 ). The raw coal ( 2 ) comprises a lignite or a subbituminous coal, and the amount of calcium is an equimolar amount relative to the molar amount of sulfur contained in the raw coal ( 2 ).
First claim
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1 . A coal for a boiler fuel used as a fuel for a coal-fired boiler, the coal for a boiler fuel comprising a reformed coal, the reformed coal comprising a raw coal and calcium ion-exchanged on the raw coal, the raw coal comprising a lignite or a sub-bituminous coal, and an amount of the calcium being not less than an equimolar amount relative to a molar amount of sulfur in the raw coal. 2 . The coal for a boiler fuel according to claim 1 , wherein the reformed coal further ion-exchanges iron, and an amount ratio of the iron being in a range from 0.1 to 5 wt % relative to a dry-weight of the raw coal. 3 . The coal for a boiler fuel according to claim 1 , wherein the reformed coal includes ion-exchanged calcium in a range from 4 to 10 wt % relative to a dry-weight of the raw coal, and the coal for a boiler fuel comprises a mixed coal, the mixed coal being a mixture of a basic coal and the reformed coal, the basic coal comprising at least one kind from a bituminous coal, a subbituminous coal and a lignite, and an amount ratio of the reformed coal is in a range from 10 to 50 wt %. 4 . The coal for a boiler fuel according to claim 1 , wherein the coal for a boiler fuel is treated with pyrolysis treatment. 5 . The coal for a boiler fuel according to claim 4 , wherein the coal for a boiler fuel is further treated with deactivation treatment.
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Classifications
Drying or removing water · CPC title
of water · CPC title
Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel · CPC title
Washing, scrubbing, stripping, scavenging for separating fractions, components or impurities during preparation or upgrading of a fuel · CPC title
with additives · CPC title
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- What does patent US2016168496A1 cover?
- To provide a coal for a boiler fuel ( 10 ) used as a fuel for a coal-fired boiler, the coal for a boiler fuel comprising a reformed coal ( 10 ) comprising a raw coal ( 2 ) and calcium ion-exchanged on a raw coal ( 2 ). The raw coal ( 2 ) comprises a lignite or a subbituminous coal, and the amount of calcium is an equimolar amount relative to the molar amount of sulfur contained in the raw coal …
- Who is the assignee on this patent?
- Mitsubishi Heavy Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification C10L9/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jun 16 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).