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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
  • C10L10/00—Use of additives to fuels or fires for particular purposes
  • C10L10/06—Use of additives to fuels or fires for particular purposes for facilitating soot removal

Definitions

• the present invention relates to chemical sweeping and / or catalytic of combustion devices and conduits smoke. It relates more particularly to a combustible agent solid chemical and / or catalytic destruction of the soot, its manufacturing process and its use.
• “soot” in the present description means the deposits of all kinds that form in the devices of heating and more particularly in the flues. These deposits can be of various nature, in particular particles carbonaceous matter, entrained ashes and above all tars. These are mainly deposited in the lower part of the flues. Training and filing of these materials are particularly emphasized in the case from burning solid fuels such as coal and wood, especially with closed hearths or "inserts".
• Chimney sweeping products are currently on the market called “chemical” or “catalytic”. Some of these products contain sulfur to decompose tar to facilitate their combustion with all the risks that this involves, in particular the risk of a chimney fire, because it is necessary heat the duct to the maximum to make the product effective, and the risk of deterioration of the conduits by caustic soda or its decomposition products.
• Document FR-A-2 554 458 describes a combustible agent solid acting preventively or curatively on deposits and soot in the calorie generators.
• This agent can understand, among others, a combustible cellulosic material particulate, an active preventive or curative agent for soot and tar deposits and optionally a binder.
• the agglomerates obtained, for example in the form of briquettes, sticks or granules are introduced into an active hearth, about one kilogram per tonne of fuel, the agglomerate containing a few grams or tens of grams of anti-soot agent per kilogram of agglomerate.
• paraffin wax as a binder for materials in the manufacture of fire starters and artificial logs is known from documents US-A-4 147 518 and US-A-3,297,419 respectively.
• This last document provides incorporate organometallic additives into artificial logs, in proportion less than 0.1% and whose effect is improve the terminal combustion of logs, or nitrates at a rate of 5% by weight to simulate the crunches produced by an actual wooden log. There is no suggestion an effect on chimney sweeping.
• the invention is based on the new concept of realizing a combustible solid mass incorporating a destructive agent soot and especially tar.
• the combustion of this mass allows the soot-destroying agent to volatilize as it burns and come to contact with soot and tar.
• the above components are found in substantially homogeneous mixture, although one can envisage, for example, the use of successive layers of elements (a) and (b) linked by element (c), or a surface coating final mixing by the only component (c) or (a) or the mixture (c + a), for example to accelerate inflammation.
• Particulate solid cellulosic combustible material preferably consists of wood particles, for example in the form of sawdust, flour, chips, fibers or the like.
• other combustible materials can be used cellulosic, for example grinding or chopping products cereal straw, crushed and dried residue from certain household waste (plant residues) or residues pulp mills.
• the particle size is advantageously between 0.1 and 10 mm for sawdust and wood flour.
• Other materials are longer (chips or fibers) but their thickness is then preferably understood between 0.1 and 2 mm.
• the binder is any material capable of maintaining the cohesion of the mixture of elements (a) and (b).
• the preference is given to a solid paraffin wax at room temperature.
• paraffin is a combustible material by wicking and which, in the molten state, can permeate the elements (a) and (b) and, after cooling, maintains good cohesion between these elements in the solid obtained.
• a natural, artificial or synthetic glue and for example a vinyl adhesive, a thermoplastic resin, a starchy material, stearic acid.
• the relative proportions of the elements can vary widely depending in particular on the nature of each of the elements of the composition, their porosity, their combustibility and, for the soot-destroying agent, of its effectiveness.
• the relative weight proportions will be 20 to 80% of (a), 10 to 40% of (b) and 10 to 70% of (c) per 100 parts of the mixture (a + b + c).
• Subjects additional may be present, either as thinners, for example silica and silicates, either as combustion additives, either as aesthetic modifiers, for example a dye or a pigment, or to any other end.
• Their weight proportion will not exceed half of the proportion of (a + b + c) and will preferably remain less than 10% and, better, less than 5% of this proportion.
• the combustible agent for destroying soot according to the invention can be presented in any desired form, either regular, for example cubes, cylinders, any polygons, spheres, either in random form.
• a log form or log both more aesthetic and more practical.
• the dimensions of the log or log may be any and preferably will be approximately those of the logs of wood usually used in the hearth, corresponding to the more often at a length of 10 to 40 cm.
• the method of manufacturing the aggregates of the invention may be of the same type as that conventionally used in the manufacture of a log in sawdust and paraffin or in making a simply compressed log, unlike close that the combustible material (a) is added anti-soot agent (b) before sizing or coating with the agent (c) or during it.
• the mixture obtained (a + b + c) can be press molded or extruded, or cast in mussels. If the binder is used as a solution or dispersion in a solvent, this is removed by evaporation or drying.
• the elements of the aggregate are distributed substantially homogeneously, although we can also arrange the agent (b) in the center or in successive layers.
• the aggregate, for example the log, obtained can then, if desired, be wrapped in an envelope preferably fuel that will facilitate inflammation, for example paper, cardboard or waxed or treated paper or cardboard to facilitate its ignition.
• an envelope preferably fuel that will facilitate inflammation, for example paper, cardboard or waxed or treated paper or cardboard to facilitate its ignition.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Combustion & Propulsion (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Solid Fuels And Fuel-Associated Substances (AREA)
• Catalysts (AREA)
• Compounds Of Unknown Constitution (AREA)
• Glass Compositions (AREA)
• Shovels (AREA)
• Carbon And Carbon Compounds (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=9496537

Family Applications (1)

Country Status (9)

Cited By (4)

Families Citing this family (10)

Citations (13)

Family Cites Families (1)

• 1996
  • 1996-10-10 FR FR9612365A patent/FR2749855B1/fr not_active Expired - Fee Related
• 1997
  • 1997-09-25 ES ES97402235T patent/ES2134671T3/es not_active Expired - Lifetime
  • 1997-09-25 DK DK97402235T patent/DK0837121T3/da active
  • 1997-09-25 EP EP97402235A patent/EP0837121B1/de not_active Revoked
  • 1997-09-25 DE DE69700378T patent/DE69700378T2/de not_active Revoked
  • 1997-09-25 AT AT97402235T patent/ATE182921T1/de not_active IP Right Cessation
  • 1997-10-06 CA CA002216012A patent/CA2216012C/fr not_active Expired - Lifetime
  • 1997-10-09 US US08/947,627 patent/US5882365A/en not_active Expired - Lifetime
• 1999
  • 1999-08-10 GR GR990402023T patent/GR3030942T3/el unknown

Patent Citations (13)

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