WO1988000232A1 - Combustibles ameliores - Google Patents

Combustibles ameliores Download PDF

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Publication number
WO1988000232A1
WO1988000232A1 PCT/GB1987/000467 GB8700467W WO8800232A1 WO 1988000232 A1 WO1988000232 A1 WO 1988000232A1 GB 8700467 W GB8700467 W GB 8700467W WO 8800232 A1 WO8800232 A1 WO 8800232A1
Authority
WO
WIPO (PCT)
Prior art keywords
combination
fuel
guar gum
fuels
cross
Prior art date
Application number
PCT/GB1987/000467
Other languages
English (en)
Inventor
Peter Christian Shann
Original Assignee
Explosive Developments Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Explosive Developments Limited filed Critical Explosive Developments Limited
Publication of WO1988000232A1 publication Critical patent/WO1988000232A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders

Definitions

  • This invention relates to fuels and, more particularly, to solid fuels such as coal, coke, charcoal, wood and the like carbon based fuels in dust, powder, chip or other particulate form processed to form briquettes, pellets or granules.
  • solid fuels such as coal, coke, charcoal, wood and the like carbon based fuels in dust, powder, chip or other particulate form processed to form briquettes, pellets or granules.
  • processed form solid fuels in dust, powder, chip or other particulate form
  • most commercial and domestic furnaces, boilers, fires, and the like combustion devices cannot support or sustain combustion of fuels in such small divided form. Accordingly it has become the practise to process such solid fuels in divided form into briquettes, pellets, granules and the like processed forms, (hereinafter referred to as processed form).
  • binders To overcome the problems which arise from the use of such binders other binders have been proposed including, for example, cement and thermosetting resins. Difficulties with such binders reside on the fact that they are expensive, they add little, if any, calorific value to the processed fuel and they often degenerate in the combustion chamber causing unburned fuel to fall into the ash box where its value is lost.
  • a further difficulty with many known binders is that, when subjected to the high temperature of combustion of the fuel, they form, or give off, offensive and often dangerous gases and vapours.
  • the present invention seeks to provide a processed form for divided solid fuel which is capable of maintaining its processed form when exposed to the elements, is safe and inoffensive when subjected to combustion, which meets the smokeless zone requirements and which is commercially viable.
  • a combination suitable for processing into a desired processed form, comprising a solid fuel, or a mixture of solid fuels, in divided form mixed with a binder, characterised in that the binder comprises, or includes, guar gum.
  • the guar gum comprises from 0.1% to 10% by weight of the combination of fuel and binder and, more preferably, from 0.5%to 3% by weight of the combination.
  • the present invention also envisages a fuel in processed form comprising a carbon based fuel, or mixture of such fuels, in divided form bound with a binder comprising or including guar gum.
  • Guar gum hereinafter referred to as "guar"
  • guar comprises the ground endosperm of the Indian plant Cyanospsis tetragonoloba and, as such, guar is a readily available and relatively cheap material.
  • Many of the properties of guar are well known, in particular its ability to gel with water in the cold, and guar is used in foodstuffs but the peculiar properties which render this material ideal for use as a binder for solid fuel in divided form have never before been recognized, nor has this material been proposed for such use.
  • Guar has the great advantages that it can be supplied to the divided fuel in the presence of water so that no expensive predrying of the divided fuel is required, the processed form of the fuel containing guar is very clean and stable and is not readily broken down when the processed form is exposed to the elements, during combustion the guar does not give off smoke or any noxious offensive gases, vapours or fumes and, during combustion, the binder retains the processed form until all the fuel has combusted.
  • the recognition of the aforesaid advantages and the proposal to use guar as the, or part of the, binder in a processed form for divided solid fuel constitutes a major step in the art.
  • the combination includes a cross-linking agent, preferably a metal ion agent and, by way of example, titanium tetra chloride and ziconium have been found to be advantageous cross-linking agents for use with the combination proposed by the invention.
  • the cross-linking agent may be added to the fuelbefore the guar is added, or after the guar has been added, but preferably the cross-linking agent is added to the fuel with the guar and in the presence of water.
  • the cross-linking agent comprises from 0.001% to 1% by weight of the guar in the combination but more preferably comprises from 0.005% to 0.02% by weight of the guar content combination.
  • the pH.of the combination is preferably adjusted by adding an acid to the combination.
  • an acid can be used but acids which do not produce noxious or offensive vapours or fumes when the processed form has been made or during combustion are preferred.
  • Suitable acids are the fruit acids, preferably citric acid.
  • the pelletized fuel was allowed to stand and dry and was then placed in an open grate and ignited.
  • the pellets were readily ignited and burned well, without giving off smoke or any offensive fumes or vapours, and the pellets retained their form throughout combustion.
  • the combusted pellets were examined and the binder was observed to have carbonized, holding the ash of the combusted fuel, and all the fuel had burned so that combustion was complete.
  • the combusted pellets in fact consisted of a light ash sinter which, with minimal disturbance, broke down to a sub-divided form.
  • Pelletized fuel made as described above, but with coke replacing the two coals, was burned without difficulty in a domestic gravity feed boiler.
  • Pelletized fuel made as described above, but substituting charcoal for the two solid coals, was burned on a barbeque, without ignition problems, smoke or fumes and without imparting any undesirable tastes or odours to food cooked thereon.
  • the guar gum is mixed with water before being added to the fuel and this addition of water is of great advantages because if the water content of the divided fuel or fuels is monitored the amount of water added with the guar gum can be adjusted in direct relationship to the water content of the fuel and expensive drying of the solid fuel, essential in most conventional processing of fuels, can be avoided.
  • the combination in processed form proposed by the present invention is useful as a fuel and offers substantial advantages and benefits over conventional processed fuels the said combination does have other ancilliary uses and has, for example, been found to offer advantages in the . metal industry, in particular the iron and steel industry, for introducing carbon into metals.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

Nouveau combustible granulaire ou sous la forme de briquette, pastille ou autre type de conditionnement offrant de gros avantages par rapport aux combustibles conventionnels. Le combustible comprend un seul combustible solide, ou un mélange de combustibles solides, tels que du charbon, du coke ou du charbon de bois fragmentés, mélangés avec un liant constitué de, ou contenant, de la gomme de guar. Des combinaisons préférées peuvent comprendre un agent de réticulation, tel que du tétrachlorure de titane ou du zirconium et un acide, par exemple l'acide citrique.
PCT/GB1987/000467 1986-07-03 1987-07-03 Combustibles ameliores WO1988000232A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868616214A GB8616214D0 (en) 1986-07-03 1986-07-03 Fuels
GB8616214 1986-07-03

Publications (1)

Publication Number Publication Date
WO1988000232A1 true WO1988000232A1 (fr) 1988-01-14

Family

ID=10600501

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1987/000467 WO1988000232A1 (fr) 1986-07-03 1987-07-03 Combustibles ameliores

Country Status (3)

Country Link
EP (1) EP0275271A1 (fr)
GB (1) GB8616214D0 (fr)
WO (1) WO1988000232A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314322A2 (fr) * 1987-10-28 1989-05-03 Coal Industry (Patents) Limited Procédé de briquettage
EP0541181A1 (fr) * 1991-11-07 1993-05-12 Akzo Nobel N.V. Procédé d'agglomération de matières particulaires et les produits obtenus par ce procédé
US5698007A (en) * 1992-08-06 1997-12-16 Akzo Nobel Nv Process for agglomerating particulate material
US6071325A (en) * 1992-08-06 2000-06-06 Akzo Nobel Nv Binder composition and process for agglomerating particulate material
EP2883943A1 (fr) 2013-12-16 2015-06-17 Arigna Fuels Limited Fabrication de briquettes à partir de combustible biomasse traitée thermiquement
RU2707072C1 (ru) * 2019-04-09 2019-11-22 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет промышленных технологий и дизайна (СПбГУПТД)" Композиция для получения твёрдого древесного топлива
WO2021094786A1 (fr) * 2019-11-14 2021-05-20 Changeover Technologies Limited Procédé permettant de former des pastilles de combustible
WO2021094784A1 (fr) * 2019-11-14 2021-05-20 Changeover Technologies Limited Formule et procédé pour produire des pastilles de combustible

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1376706A (en) * 1920-05-24 1921-05-03 Kratochwill Rudolph Albrecht Brick-coal
FR29794E (fr) * 1924-06-12 1925-11-07 Procédé de fabrication à température modérée d'un combustible moulé
FR867007A (fr) * 1940-09-05 1941-09-23 Perfectionnements apportés aux agglomérés, notamment de charbon de bois, et aux procédés pour leur obtention

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1376706A (en) * 1920-05-24 1921-05-03 Kratochwill Rudolph Albrecht Brick-coal
FR29794E (fr) * 1924-06-12 1925-11-07 Procédé de fabrication à température modérée d'un combustible moulé
FR867007A (fr) * 1940-09-05 1941-09-23 Perfectionnements apportés aux agglomérés, notamment de charbon de bois, et aux procédés pour leur obtention

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314322A2 (fr) * 1987-10-28 1989-05-03 Coal Industry (Patents) Limited Procédé de briquettage
EP0314322A3 (fr) * 1987-10-28 1989-08-16 Coal Industry (Patents) Limited Procédé de briquettage
EP0541181A1 (fr) * 1991-11-07 1993-05-12 Akzo Nobel N.V. Procédé d'agglomération de matières particulaires et les produits obtenus par ce procédé
US6497746B1 (en) 1991-11-07 2002-12-24 Akzo Nobel N.V. Process for agglomerating particulate material
US5698007A (en) * 1992-08-06 1997-12-16 Akzo Nobel Nv Process for agglomerating particulate material
US6071325A (en) * 1992-08-06 2000-06-06 Akzo Nobel Nv Binder composition and process for agglomerating particulate material
EP2883943A1 (fr) 2013-12-16 2015-06-17 Arigna Fuels Limited Fabrication de briquettes à partir de combustible biomasse traitée thermiquement
RU2707072C1 (ru) * 2019-04-09 2019-11-22 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет промышленных технологий и дизайна (СПбГУПТД)" Композиция для получения твёрдого древесного топлива
WO2021094786A1 (fr) * 2019-11-14 2021-05-20 Changeover Technologies Limited Procédé permettant de former des pastilles de combustible
WO2021094784A1 (fr) * 2019-11-14 2021-05-20 Changeover Technologies Limited Formule et procédé pour produire des pastilles de combustible

Also Published As

Publication number Publication date
EP0275271A1 (fr) 1988-07-27
GB8616214D0 (en) 1986-08-13

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