Method of fuel pellets production

FIELD: oil and gas industry.

SUBSTANCE: invention is related to production of fuel pellets including mixing of filler that contains wood processing waste, combustible component in the form of oil waste and binding agent where fat and oil waste from food industry are also used as combustible component and such combustible component serves simultaneously as binding agent; powdered thickener from combustible material is added to the mixture, at that at first mixing of thickener and binding agent is made in ratio of 0.2-1.0:1 during 1.5-2 minutes in order to thicken the latter, thereafter filler is introduced step-by-step into the thickened mixture and filler takes ratio of 0.5-1.0:1 to the binding agent, then mixture is stirred during 35-40 minutes till pellets of stable shape appear; then thickener is added again in quality of 10-20% of its initial weight in order to prevent sticking of pellets and the mixture is stirred for another 2-4 minutes till finished product of round pellets is received. Received fuel pellets are used for household and municipal boilers for firing up purpose.

EFFECT: claimed method is simpler, more cost effective and ecologically safe.

15 cl

 

The invention relates to the manufacture of fuel briquettes, which can be used as fuel in households, boilers, household use, as an ignition means for igniting.

There is a method of producing fuel briquettes described in p. the Russian Federation No. 2100416 on CL C10L 5/44, Z. 20.02.1996, op. 27.12.1997.

The known method is that to obtain briquettes fuel use waste wood and waste bitumen production, in the following ratio of components, wt.%: wood waste 80-90, waste bitumen production 10-20. Waste bitumen production contain, wt.%: bitumen 70-90, inorganic impurities 5-20 and water up to 100. Further components are batched, poured into the hopper, mixed at ordinary temperature to obtain a homogeneous mass and the resulting mixture is forced through a conical nozzle screw press under a pressure of 0.2-0.3 MPa. The nozzle is heated to a temperature of 120-130°C. For better mixing of the components can be pre-bituminous waste heat to 90-100°C. Then, the obtained pellets are dried in a special room at 60-70°C for 24-36 hours

The disadvantage of this method is its complexity, energy consumption, due to the fact that bitumen waste has to be heated at high temperatures. In addition, due to the necessity of warming up this spacebased less environmentally friendly.

There is a method of producing fuel briquettes that are described in paragraph No. 2130047 on CL C10L 5/02, 5/44, 5/12, 5/14, Z. 06.04.1998, op. 10.05.1999.

The known method includes mixing the crushed solid fuel with a binder on the basis of waste oil production - oil sludge and/or waste engine oil with additional components selected from the group including, percent by weight of briquetted mixture: lignosulfonate or molasses 2-7, and/or dehydrated activated sludge 3-8, and/or clay 3-10, and/or paraffin or paraffin GAC 1-6 with the following content of components in the briquette, wt.%: binder 10-32 and crushed solid fuel selected from the group of: sawdust, peat moss, dehydrated manure and dehydrated poultry manure, coke or coal, coal slurry, lignin, and mixtures thereof to 100, briquetting mixture at 1-30 MPa and drying of the briquettes at a temperature less than 300°C, the components of the binder before mixing with the solid fuel is stirred or heated to 60-80°C or stirred, heated to 60-80°C.

The disadvantage of this method is rather complex mixture, complex processing technology, as well as high energy consumption, due to the high temperatures in the manufacture of briquettes.

There is a method of producing fuel briquettes that are described in paragraph No. 2206603 on CL C10L 5/14, 5/22, 5/44, Z. 26.02.2002, op. 20.06.203.

The known method includes a mixture of charcoal and wood flour with a binder, pressing and drying the mixture. Pre-prepared with stirring 20-80% aqueous lime-clay paste in a ratio of 1:1, filtered, mixed with part of the charcoal, mix, load the remaining coal and wood flour, stirred for 10-45 minutes After that enter lignosulfonate and produce stirring for 10-15 min, the pressing is carried out at a pressure of 27.7-250 MPa, and drying is carried out at a temperature of 20-90°C and absolute pressure of 2.6 kPa (20 mm Hg) to a moisture content of not more than 7%.

The disadvantage of this method is rather complicated processing technology; furthermore, the presence of clay affects the heat transfer.

The closest to the technical nature of the claimed is a method of producing fuel briquettes, described in the same patent RF №23009976 on CL C10L 5/44, Z. 24.05.06, op. 10.11.07 and selected as a prototype.

The known method involves mixing a filler in the form of saturated petroleum products disposed of sawdust used as the adsorbent in wastewater treatment, with wood flour used as a binder, with the following breakdown: 80-85% sawdust and 15-20% wood flour, and pressing under a pressure of 4.5-5 MPa from the resulting mixture and further when the Cabinet.

The disadvantage of this method is its relative complexity due to the use of the process of pressing and drying, a sufficiently high energy consumption, due to the need of pressing and drying, and the lack of high environmental friendliness due to the fact that during the drying of the briquettes containing saturated with water and oil sawdust, evaporate like water and oil, which leads to air pollution. In addition, in this case as filler are used only otrisovannye wood waste, which narrows the operational capability of the method.

The objective of the proposed technical solution is the simplification of production while reducing energy consumption of ways, improving quality and expanding its operational capabilities.

The problem is solved in that in a method of producing fuel pellets, comprising mixing a filler-containing waste in the processing of wood raw material, the combustible component in the form of oil waste and binder according to the invention as a fuel component is also used fat-food industry wastes, combustible component acts as a binder, mixed weight add powdered thickener combustible material, at first producing is within 1.5-2 min mixing a thickener and a combustible binder ratio of 0.2-1.0:1 to thickening of the latter, then in the thickened mass is gradually introduced filler, which is generally 0.5 to 1.0:1 to combustible binder, and again stirred for 35-40 minutes until the formation of pellets sustainable form, then add the thickening agent in the amount of 10-20% of its original mass to prevent sticking of the pellets and stirred for another 2-4 minutes until the finished product in the form of round pellets.

The waste oil can be used sludge, oil, waste industrial oils, substandard bitumen, etc. as fuel can also be used of fat and waste from the food industry. The combustible waste can be used separately as a fuel binder or simultaneously in the form of a mixture of several of these species. In addition, as a thickener may be used wood flour, flour from MDF, coal dust, fine crumb particleboard, fiberboard and the like, and as a filler - wood chips and/or sawdust.

The use of the combustible component at the same time as a binder and introduction in addition to the filler, thickener from combustible material as one of the components with the addition of the thickening agent in the binder at the specified mixing ratio, mixing thickened mass of filler together with post the foam filler with stirring, and adding a thickening agent to prevent sticking of the pellets towards the end of the process, you can simplify the production technology, in which, without the need of pressing and drying complex equipment and seconadry, provides a ready product - fuel pellets, which reduces energy consumption and increases the environmentally friendly way. Use as fuel oil and fat waste of the food industry is expanding operational capability of the method also improves the environment, providing useful and dispose of them.

Use as filler, in addition to wood waste, shredded combustible waste vegetable and/or nereshitelno origin also extends the capabilities of the proposed method.

The technical result - the technology simplification and reduction of energy consumption by improving the environment and enhanced operational capabilities of the method.

The inventive method has the novelty in comparison with the prototype, differing from it in such essential characteristics as use as a fuel component and/or oil and fat waste of the food industry and/or waste combustible materials with adhesive properties, and as a filler and/or combustible waste vegetable, and/or nereshitelno origin, the use of the combustible component at the same time as the binder, use as a fuel component of the thickener combustible material is a, gradual mixing of the first thickener and binder, and then the filler in the above-stated ratio of the components, adding to the end of the process of thickening agent to prevent sticking of the pellets and mixing to obtain the finished product in the form of round pellets that provide collectively achieve the specified result.

The applicant did not know the technical solutions with these distinctive features, which collectively achieve the specified result, he felt, therefore, that the proposed solution meets the criterion of "inventive step".

The inventive method can be widely used in the fuel industry in the utility sector, due to its simplicity and low cost, as well as adequate environmental performance, and therefore meets the criterion of "industrial applicability".

The inventive method consists in the following.

Take as filler wood waste: dry sawdust, chips and shavings and/or chopped vegetable wastes, and/or nereshitelno origin. As a fuel component used waste oil and/or fatty food industry wastes and/or waste combustible materials with adhesive properties. When this combustible component is the simultaneity the temporal binding. As a thickener use powdered combustible material. First by mixing a thickener and a combustible binder ratio of 0.2-1.0:1 to thickening of the latter. Then in the thickened mass is gradually introduced filler, which is generally 0.5 to 1.0:1 to combustible binder, and gradually stirred for 30-60 min to obtain a pellet forms. Then again add the thickener in the amount of 10-20% of the original mass to prevent sticking of the pellets and mix to obtain a finished product in the form of round pellets.

The method is as follows.

As a fuel and binder take waste oil, in particular sludge, oil, lumber bitumen or used industrial oils and/or waste edible oil (such as vegetable oil after using it for frying in deep fat), and/or waste combustible materials with adhesive properties (e.g., waste lacquers, paints, varnishes and the like). As filler take wood chips and sawdust. The filler can also use shredded waste of vegetable origin, cereals, fodder crops (wheat straw, corn, flax and the like). You can also use shredded combustible waste nereshitelno proishozhdenie crushed bitumen, hardened varnishes, paints, powdered plastics, polymers, rubber and the like). As a thickener used wood flour, MDF-flour, fine crumb particleboard, fiberboard, coal dust, crumb plastic, rubber, etc.

In the case of use as a binder sludge will take about 20 liters and is mixed with a thickener - wood flour in the amount of 2-10 kg to obtain a viscous (paste) "Nashi", which is then placed in the mixer, where pre-formed 50% of the filler in the form of sawdust and wood chips at the rate of 5-7 kg of Mix components for 1.5-2 minutes and start with stirring, gradually add the filler 1-1,5 kg to 100% of the required amount, continue to stir for 30-60 minutes to obtain pellets sustainable, approximately spherical shape with a diameter of 3-15 see At the end of stirring the resulting pellets approximately 2-3 kg thickener - wood flour, so they could dislipoidemia.

In the case of using as a binder a higher quality oil waste, such as waste industrial oil, 20 litres of the oil, which is much less viscous than the cuttings take about 20 kg thickener - wood flour and mix components again to obtain a viscous "Nashi". The process is analogion the above.

The method can be carried out in the unheated room, outdoors under a canopy. The mixing may be carried out in a mixer or in a separate bowl using a handheld mixer. The mixing time varies at specified intervals depending on the moisture content of the thickener and filler and the viscosity of waste oil or waste oil and fat in the food industry, as well as from the conditions of production. So, more humid sawdust and wood flour require smaller quantities of waste oil, drier - more volume. When production in summer conditions (at higher temperature) waste oil is becoming more liquid and used in production in a smaller number; in winter, waste oil or waste oil and fat thicker and require more time mixing or less filler.

The inventive method for the production of fuel pellets in comparison with the prototype is more simple, accessible, less expensive and more environmentally friendly.

1. Method for the production of fuel pellets, comprising mixing a filler-containing waste in the processing of wood raw material, the combustible component in the form of waste oil, and a binder, characterized in that the fuel component is also used waste oil and fat is hideway industry, combustible component acts as a binder, mixed weight add powdered thickener combustible material, while initially producing for 1.5-2 min mixing a thickener and a combustible binder ratio of 0.2-1.0:1 for thickening the latter, then thickened mass is gradually introduced filler, which is generally 0.5 to 1.0:1 to combustible binder, and again stirred for 35-40 minutes until the formation of pellets sustainable form, then add the thickening agent in the amount of 10-20% of its original mass to prevent sticking of the pellets and stirred for another 2-4 minutes until the finished product the form of round pellets.

2. The method according to claim 1, characterized in that as a waste oil used oil-slime.

3. The method according to claim 1, characterized in that as a waste oil used oil.

4. The method according to claim 1, characterized in that as a waste oil used waste industrial oils.

5. The method according to claim 1, characterized in that as oil waste use waste bitumen.

6. The method according to claim 1, characterized in that as a waste oil used at the same time the sludge, oil, waste industrial oils and waste bitumen.

7. The method according to claim 1, characterized in that as fuel comp is being used waste oil food industry.

8. The method according to claim 1, wherein said combustible component is used at the same time waste oil and fat waste from the food industry.

9. The method according to claim 1, characterized in that the thickener used wood flour.

10. The method according to claim 1, characterized in that as a thickener, the use of flour from MDF.

11. The method according to claim 1, characterized in that the thickener used coal dust.

12. The method according to claim 1, characterized in that the thickener used a fine crumb chipboard.

13. The method according to claim 1, characterized in that as wood waste use shavings.

14. The method according to claim 1, characterized in that as wood waste use sawdust.

15. The method according to claim 1, characterized in that as waste wood use wood chips and sawdust.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: method of making fuel briquettes involves grinding combustible solid components, mixing with binder, pressing and drying the briquettes. The method is characterised by that the combustible solid components used are recycled ballistit-type gun powder or non-recoverable wastes from powder production, ground on a modernised disk mill to particle size of 0.5-1.0 mm, and activated charcoal screenings, ground on a double-roll crusher to particle size of less than 4.0 mm, and mixed in 8.0-10.0% aqueous solution of polyacrylamide binder or a sodium salt of carboxymethyl cellulose in a continuous or periodic action mixing device with horizontal mixers, followed by pressing into fuel briquettes on a shaft pelleting press; the formed briquettes are dried with air on a three-section belt drier at temperature 100…105°C for 3 hours, cooled and then dry-cured for three days.

EFFECT: wider raw material base for making fuel briquettes, environmentally safe recycling of discarded gun powder, ballistit wastes and activated charcoal screenings not suitable for use as an adsorbent, high energy output and calorific capacity of the fuel briquettes.

1 dwg, 2 ex

FIELD: oil and gas industry.

SUBSTANCE: invention is related to procedure and method for production of solid hydrocarbon fuel. For this purpose the procedure of solid hydrocarbon fuel production involves the following: saturation of hydrocarbon raw material with water; dispersion of the raw material saturated with water up to ultrafine condition in result of volumetric cavitation under ultrasound; dispersed raw material is extruded through magnetoacoustic coagulator made as a thin-wall metal tube; formation of ring eddy currents in metal of the magnetoacoustic coagulator which are directed around it longitudinal axis and have frequency approximately equal to the frequency of free radial mechanical oscillation of the magnetoacoustic coagulator; output from the magnetoacoustic coagulator of solid hydrocarbon fuel obtained in result of ultrafine mixture coagulation under influence of magnetoacoustic resonance processes in magnetoacoustic resonator.

EFFECT: use of the device allows simplification of more efficient solid hydrocarbon fuel from any organic raw material.

12 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to a method of making fuel briquettes from biomass, involving heat treatment of biomass at temperature of 200-500°C without access to air, preparing binding substance obtained by dissolving dextrin in a pyrolysis condensate in ratio of 1:(5-20), mixing the binder with a carbon residue ground to particle size of 2 mm, moulding a fuel briquette from the obtained mixture and drying said briquette at room temperature for 2-5 days. The obtained briquettes have low combustion heat, improved mechanical strength and resistance to compression.

EFFECT: use of the disclosed method widens the range of solid fuel, the raw material base for making briquettes and reduces technological expenses on making briquettes.

1 cl, 1 dwg, 1 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: described is a method according to which raw material is ground, dried and then processed into granules in a matrix moulder, where the material which is first coarsely ground in corresponding cases in milling machines, is ground before drying in a first matrix moulder.

EFFECT: economic value of the method.

8 cl

Active pellets // 2477305

FIELD: chemistry.

SUBSTANCE: invention relates to recycling wood-plant wastes and peat and can be used in producing ecologically clean biofuels in form of active briquettes and granules (pellets) for industrial and domestic needs. The solid biofuel based on wood-plant components and/or peat additionally contains a combustion catalyst, with the following ratio of components, wt %: combustion catalyst 0.001-10; crushed wood-plant component and/or peat 100. The wood-plant components used are wood shavings, wood chips, bark, straw, chaff, seed husks, mill cake, stalks and leaves, waste paper, and the combustion catalyst is in form of inorganic derivatives of group I-II and VI-VIII metals.

EFFECT: obtaining ecologically clean biofuel.

3 cl, 2 tbl

Solid fuel // 2471859

FIELD: chemistry.

SUBSTANCE: described is solid fuel which is formed from a mixture of 1-25 mm wood chips, 1-25 mm pieces of paper and a thermoplastic resin, wherein the mixture contains 85-95 pts.wt wood chips and pieces of paper and 5-15 pts.wt thermoplastic resin, and the weight ratio of the wood chip to the pieces of paper is equal to 20:80-90:10.

EFFECT: solid fuel generates a stable amount of heat energy and is nontoxic, which is achieved by making the fuel from waste wood, waste paper and waste thermoplastic resin used in the given ratio.

6 cl, 1 tbl, 5 ex

FIELD: power engineering.

SUBSTANCE: briquettes are designed for fireplaces, different domestic stoves, for cooking, heating of residential and domestic premises, to heat railway cars, temporary cabins, etc. A highly inflammable fuel briquette contains the main layer, including a coal-containing component and a binder, and an igniting layer containing nitrate and a binder. The coal-containing component is represented by coal slacks in amount of 30-60%, the binder is paper wastes in amount of 40-70%, and the igniting layer contains potassium nitrate or sodium nitrate in amount of at least 80 wt % of the igniting layer. At the same time the briquette is made with a hole, the area of the cross section of which makes from 25 to 40% from the area of the briquette cross section. Availability of both a flammable component (paper wastes) and an oxidant (potassium or sodium nitrate) in the igniting layer makes it possible for it to easily ignite from low-energy sources of heat (for instance, matches). Availability of a central hole increases completeness of fuel briquette burning and reduces emissions of hazardous substances into atmosphere.

EFFECT: fuel briquette is formed on an extruder, which simplifies and cheapens its manufacturing process.

1 dwg, 1 tbl

Mixed fuel // 2460762

FIELD: power industry.

SUBSTANCE: mixed fuel includes lignin and hydrogen in the weight ratio of lignin to hydrogen of 9:1 to 1:9, mainly of 2:1 to 1:3.

EFFECT: more complete combustion of lignin; reduction of ash content of fuel.

1 cl

Fuel briquette // 2447135

FIELD: chemistry.

SUBSTANCE: invention relates to the technology of producing solid organic fuel, particularly fuel briquettes, and can be used to heat houses, in field conditions, on transportation and in industry. The fuel briquette is made with longitudinal holes and contains organic binder in form of polypropylene production wastes in amount of 2.0-10.0 wt %, oxidising agent - potassium nitrate 2.0-5.0 wt %, catalyst - MnO2+Fe2O3 mixture with weight ratio thereof ranging from 4:1 to 1:6 in amount of 0.1-1.5 wt % and sawdust - the rest.

EFFECT: high calorific value of the briquette and reduced smoking.

1 cl, 1 ex, 2 tbl

FIELD: machine building.

SUBSTANCE: proposed method consists in grinding organic origin stock elements to nanoparticle radius of not over 100 nm. Liquid-packed ring pumps are used to created rarefied atmosphere deprived of oxygen and containing water vapors. Fuel is minced in said atmosphere. Surface of produced nanoparticles is coated with monolayer of sorbed water molecules. Sorbed water molecules dissociate in rarefied atmosphere into OH radial and atoms of hydrogen or its isotopes. Note here that atoms of hydrogen or its isotopes penetrate into fuel nanoparticles to ne accumulated therein. Produced fuel particles are mixed with ethanol to produce homogeneous mix.

EFFECT: higher calorific value, pollution-free fuel.

1 cl, 2 dwg, 4 tbl

FIELD: power engineering.

SUBSTANCE: invention relates to usage of an extrusion-type briquette (BREX) produced by the method of stiff vacuum extrusion, including coal dressing wastes and, if required, coal siftings, a mineral binder and a concrete stone, as fuel for industrial furnaces and domestic ovens. BREX briquettes are characterised by the fact that size of materials included into a mixture for production of briquettes does not exceed 5 mm.

EFFECT: application of stiff vacuum extrusion makes it possible to produce BREX briquettes with sufficient strength and optimal dimensions for solid fuel, with minimum consumption of a binder.

3 cl

FIELD: oil and gas industry.

SUBSTANCE: invention is related to procedure and method for production of solid hydrocarbon fuel. For this purpose the procedure of solid hydrocarbon fuel production involves the following: saturation of hydrocarbon raw material with water; dispersion of the raw material saturated with water up to ultrafine condition in result of volumetric cavitation under ultrasound; dispersed raw material is extruded through magnetoacoustic coagulator made as a thin-wall metal tube; formation of ring eddy currents in metal of the magnetoacoustic coagulator which are directed around it longitudinal axis and have frequency approximately equal to the frequency of free radial mechanical oscillation of the magnetoacoustic coagulator; output from the magnetoacoustic coagulator of solid hydrocarbon fuel obtained in result of ultrafine mixture coagulation under influence of magnetoacoustic resonance processes in magnetoacoustic resonator.

EFFECT: use of the device allows simplification of more efficient solid hydrocarbon fuel from any organic raw material.

12 cl, 2 dwg

FIELD: chemistry.

SUBSTANCE: material cells are mechanically disintegrated; lipids are extracted using a Folch method, involving extraction of lipids with a mixture of chloroform and methanol (2:1 by volume), followed by washing the extract with KCl solution (0.88%) and, after demixing and removing the top phase, with a mixture of 0.88% KCl solution and methanol (1:1 by volume); the KCl solution and the mixture are added in an amount of 1/4 part of the obtained and remaining volume of extract, respectively; the ready lipid extract is dried by passing through a layer of anhydrous Na2SO4; the dry extract is then re-esterified with a mixture of methanol and acid catalyst, where the methanol is mixed with the catalyst in ratio of 50:1 by volume; biodiesel is extracted from the reaction mixture with hexane; the biodiesel extract is dried by passing through a layer of anhydrous Na2SO4.

EFFECT: obtaining biodiesel using a cheap and simple method by processing mud or sludge from treatment facilities.

1 tbl, 2 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to production of solid fuel, in which there described is solid-fuel granulated composition based on carbon-containing component, where as carbon-containing component, there added is disperse activated product of low-temperature pyrolysis of wastes of technical rubber products and polymer wastes (pyrocarbon with specific surface S=5000-8000 cm2/g), and wood dust is added as plant waste. At that, as the component that initiates combustion, there added are nitrogen-containing components, and binding agent is added in the form of water solution of polymer plasticising additive with total initial humidity Winitial =10÷35 wt %. Peculiar feature of granulated solid-fuel composition and method for its obtainment is increase in thermal power due to considerable acceleration of fuel combustion at reduced quantity of hazardous gaseous emission to atmosphere. Proposed ratios of components and added quantity of NH4NO3 as an oxidiser instead of hydrogen at combustion provides formation of NO3, N2 and H2O. Excess oxygen is supplied to oxidation of fuel components.

EFFECT: obtaining fuel briquettes with high reactivity ability, increased thermal power and high strength of briquettes.

2 cl, 4 cl

FIELD: process engineering.

SUBSTANCE: invention relates to fuel agglomeration machines and production of moulded solid fuel to be used in utilities and power engineering. Proposed device comprises housing with screw, solid fuel feed trough, and female die with moulding holes and ducts. Device housing accommodates conditioning system while screw is furnished with processing blades and heating elements arranged inside screw hollow tube and connected to external power source by means of terminals.

EFFECT: higher quality of fuel pellets.

3 cl, 2 dwg

Fuel briquette // 2268914

FIELD: production of coal-containing fuel; preparation of briquettes (granules) for furnace units of minor and medium heat power engineering.

SUBSTANCE: fuel (briquette, granule) contains 47.5-52.5% of culm, 28.5-31.5% of coal screenings and 19-21% of sawdust. Fuel thus produced is cheaper than similar fuels due to utilization of coal output wastes and wood-working process wastes without binding materials; fuel possesses high heat of combustion of coal; slag forming is excluded; finely-dispersed ash may be used as mineral fertilizer.

EFFECT: enhanced efficiency.

FIELD: solid fuel technology.

SUBSTANCE: invention is designed for application in production of solid fuel in metallurgy and for domestic necessities. Method of restoring sieve composition of coke comprises mixing off-grad coke with binder, such as various cement brands and Portland cement, moistening, briquetting of mix followed by heat treatment, and cooling. Off-grad coke utilized is coke fines fraction 0-10 mm and/or coke nut fraction 10-25 mm belonging to a certain types, which are mixed with binder at ratio (60-95):(5-40), respectively. Moistening is provided by adding water to 35% based on the weight of mix. Heat treatment is effected with steam. Cooling proceeds at ambient temperature to residual moisture content 5%. Mix is completed with filler in the form of organic or inorganic naturally occurring or man-made substances. Briquetting is effected on either vibration or press equipment. Coke briquette contains 60 to 95% of above-defined off-grade coke and 5 to 40 % of binder. Size of thus manufactured briquettes corresponds to required sieve composition of coke.

EFFECT: enabled full restoration of all fractions of needless process coke residues to useful sieve composition appropriate for fabrication of environmentally safe briquettes with improved consumer's properties without considerable investments.

8 cl, 1 tbl, 6 ex

FIELD: production of smokeless solid combustibles used for outdoors preparation and heating of food in camping.

SUBSTANCE: the invention is pertaining to combustibles, which are steadily burning at an air pressure in the open air in the heating devices used for cooking and warming up of food while in camping. The combustible composition includes 90-97 % of urotropine and paraffin - the rest. At this combustible burning it ensures a synergistic effect, in particular, removal of a skeleton-type carbon film on the surface of the condensed phase and a transparency of the flame with formation of nontoxic gaseous products of burning. In such of conditions the composition ensures necessary efficiency.

EFFECT: the invention ensures production of a synergistic effect at smokeless solid combustibles burning, transparency of flame, nontoxic gaseous products of burning.

The invention relates to the technology of solid molded fuel and can be used for household needs, as well as in industry

FIELD: chemistry.

SUBSTANCE: invention relates to a method of making fuel briquettes, which involves mixing carbon filler with ground coal, adding a binding substance and briquetting the mixture under pressure. The carbon filler, which is in form of aluminium wastes, anode paste and electrodes in amount of 25.1-85.00 wt %, is dry-mixed with ground brown coal until a 100% dry mass is obtained, followed by addition of the binding substance to the dry mass. The binding substance used is bitumen or polyvinyl alcohol in amount of 2-10 wt %, in excess of 100% of the dry mass. If polyvinyl alcohol is used as the binder, hydrophobic additives are added to the obtained mixture in amount of 1-5 wt %, in excess of 100% of the obtained mixture.

EFFECT: improved properties.

3 cl, 3 tbl, 2 dwg

Up!