Method of regulating the volume flow of a coal-kerozine suspension and a device for manufacturing a burned coal

FIELD: mining engineering.

SUBSTANCE: invention describes a method for controlling the volumetric flow rate of a coal-kerosene suspension in which, during the separation of the solid and liquid phases by feeding the dehydrated coal-kerosene suspension to a centrifugal separator of the decanter type and separating the coal-kerosene suspension into a solid fraction and a liquid fraction, the target electric current fed to the engine to rotate it and drive the screw conveyor of the centrifugal separator of the decanter type is determined such that the liquid level In the tank for a coal-kerosene suspension fed to a centrifugal separator of the decanter type, it can take a constant value; the target opening degree value is determined based on the difference between the target electric current value and the actually measured value of the electric current supplied to the motor; and the degree of opening of the flow control valve, which is located in the middle of the feed line for introducing the coal-kerosene slurry into the centrifugal separator of the decanter type, is adjusted depending on the target degree of opening. Also, the options for ways to regulate the volume flow coal-oil suspensions and devices to perform these techniques are described.

EFFECT: ability to effectively prevent overloads and mechanical damages of a centrifugal separator of the decanter type or to reduce the quality of separation of the solid and liquid phases, the ability to stabilise the process of obtaining upgraded brown coal.

6 cl, 5 dwg

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to method of recycling solid residue of tyre pyrolysis, which includes enrichment of solid fuel by method of oil agglomeration. As solid fuel used is solid carbon residue of tyre pyrolysis with initial ash content 11.40-11.66%, sulphur content 1.2 wt %, preliminarily crushed to particle coarseness 0.1 mm, with liquid fraction of pyrolysis being used as reagent for enrichment in amount 4.0-6.0% to weight of water, used for enrichment, after which granulation of obtained concentrate and application of water-resistant smell-absorbing coating from petroleum products on the surface of granules.

EFFECT: obtaining moulded fuel from solid residue of automobile tyre pyrolysis with low ash content and sulphur content.

4 tbl, 3 ex

FIELD: power engineering.

SUBSTANCE: invention includes mixing of ground solid fuel with a binder, briquetting of the mixture under pressure, where the ground solid fuel is coke dust with particle size of less than 1 mm, and the binder is coking sludge in the amount of 8.0-10% to the weight of coke dust, the mixture of coke dust and the binder is heated to 100°C, pressed in stages: first the load of 5-6 atm is set with a delay of 3-5 min and then up to 15 atm with a delay at the maximum load for 3-5 min, the finished fuel briquette is tempered at 250-300°C without access of air for 10-12 min. The produced briquettes may be used as fuel for combustion in domestic and industrial furnaces, and also for coking in chemical-recovery and metallurgical industry.

EFFECT: production of smokeless fuel briquettes of higher strength, improved environmental situation in coal processing regions, reduced prime cost of fuel briquettes.

2 tbl, 3 ex

FIELD: power industry.

SUBSTANCE: invention relates to compressed base for use in co-combustion power aggregates and house heating, containing first particles of biomass material selected out of a group including planting stock of soy beans, sage, planting stock of corn and sunflower, and second, carbon particles, where compressed base containing first and second particles and a linking agent (algae or wax) is resistant to fragmentation. Invention relates to a method of obtaining compressed base containing biomass material, carbon particles and algae or wax as linking agent. In addition, invention describes a total of compressed bases in container for use in co-combustion power aggregates and house heating.

EFFECT: compressed base resistant to fragmentation.

23 cl, 1 dwg, 1 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to production of fuel from compacted biomass whereat moist biomass is dried prior to compaction. Before drying, biomass is mechanically dewatered for decrease in moisture content and ground before mechanical dewatering. Note that biomass is ground to puree state, rubbed to obtain fiber and subjected to fine grinding to destruct cellular structures to biomass consistency varying from paste to fluid. Invention relates also to appliance for producing fuel from compacted biomass. Fine grinding allows better removal of water either mechanically or at preliminary dewatering.

EFFECT: decreased amount of contaminants released in combustion and boiler corrosion, higher combustion heat and ash fusion point.

11 cl, 1 dwg

FIELD: metallurgy.

SUBSTANCE: invention relates to technology of fuel components briquetting - coal sludges, fine classes of coal, coke dust. The method of coke dust briquetting consists in production of a concentrate. The concentrate is produced by enrichment of coke dust with particle size of less than 1 mm with initial ash content of 10-16.8 wt %, and sulphur content of 0.4-0.5 wt %, by the method of oil agglomeration to ash content of 5.0-5.5 wt% and sulphur content of 0.05 wt %. The prepared concentrate and binder heated to 100-133°C - carbamide taken in the amount of 4.0-6.0% to the weight of the initial concentrate. The mixture is briquetted in steps, for this purpose at first the load of 5-6 atm is set, with a delay of 3-5 min. and further to 15 atm with a delay under the maximum load of 3-5 min.

EFFECT: production of fuel briquettes with low ash content and sulphur content, recycling of coke dust.

1 cl, 6 tbl, 3 ex

FIELD: machine building.

SUBSTANCE: procedure for fabrication of briquettes consists in preparation of raw materials, in loading into briquetting device, in briquetting and in briquettes drying. As carbon containing materials there is used peat and/or plant residues and/or wood wastes. Raw material is prepared in a disk extruder at temperature 70-100°C and humidity 45-60 %.

EFFECT: production of briquetted fuel from various kinds of carbon containing materials possessing high qualitative indices; reduced expenditures for production.

2 cl, 2 tbl, 1 ex

FIELD: mining industry.

SUBSTANCE: process to manufacture purified carbon from brown coal implies treating loosened batch mixed with water in cavitation apparatus, which provides for disintegration of organic portion of carbon-containing mixture down to particles of less than 20 mcm. Then, resulting water-carbon mixture is directed to separation tank for sedimentation of mineral mass, which is regularly dumped. From the separation tank, mixture is fed to electrophoretic separation device, out of which paste-like carbon-containing mixture is extracted. Cavitation apparatus power is selected in such a way so as to obtain inorganic particles larger than the organic ones in the water-carbon mixture. Impact cavitation action is applied to continuous slurry flow, while water-carbon mixture is held in the separation tank for at least 20 sec.

EFFECT: high efficiency; production of low-ash purified carbon from brown coal.

5 cl, 1 dwg

FIELD: manufacture of building materials.

SUBSTANCE: carbon briquettes based on ground carbon-containing starting material (peat, coals, and the like) are fabricated by mixing starting material with 30-50% of water, treating the mix on rotary cavitation apparatus in 5 to 50 operation cycles at 15 to 70°С and cavitator rotor speed 3000-12000 rpm, pouring out thus treated mix into special molds, wherein mix is dried in air flow at 15 to 100°С to form ready-to-use briquettes (after cooling, if needed).

EFFECT: simplified fabrication process and increased process efficiency.

1 tbl

The invention relates to the processing of fine waste coal industry and subsistence detail in improved fuel household and technological purposes

The invention relates to the production of briquettes from brown coals and can find application in mining and processing industry

FIELD: wood working industry.

SUBSTANCE: invention relates to a method of deep processing of wood sawdust and leaves without chemical cementing components, characterized by that they are sieved for removal of large-size elements, loaded into a dryer for decrease of humidity down to 10%, crushed until obtaining of a mix of particles with the size less than 15 mm and the volume no more than 0.5-1.0 cm3, formed, pressed at the pressure 120-140 kg/cm2 and the temperature 250-350°C without air access. The invention describes also the briquette obtained by the named method.

EFFECT: obtaining robust briquettes from wood sawdust and leaves, without using the chemical cementing components.

5 cl, 8 ex

FIELD: heating, drying.

SUBSTANCE: invention describes a system of super-drying biomass which comprises a plurality of tanks, comprising at least one drying tank containing molten salt as the liquid agent of heat transfer, which is in contact with the biomass and converts it into biochar; and at least one water tank containing water for washing the salt, which is in contact with the biochar and cools the biochar to remove the salt adhered to the biochar, and the transportation system that moves the biomass through a plurality of tanks in the first direction while moving the biochar in the second direction opposite the first direction, so that at least one water tank containing water for washing the salt preliminary heats the biomass and simultaneously cools the biochar.

EFFECT: invention describes a system of super-drying which comprises a drying tank with molten salt, a plurality of tanks with water to remove the salt adhered to the biochar, and a transportation system for moving the biomass and biochar through the drying tank and a plurality of water tanks in opposite directions, at that the plurality of water tanks have different temperatures.

17 cl, 7 dwg, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining high-quality coke by application of borate on red-hot coke after discharge from coke furnaces with temperature 1050±50°C, with its extinguishing being carried out with water solution of borates with content of borates 3-10 g/dm3 in form of solution or pulp in quencher car under quenching tower for 90-120 sec, with tetraborate sodium pentahydrate, borax decahydrate, disodium octaborate tetrahydrate being used as borates.

EFFECT: increased quality of blast furnace coke by parameter of hot strength after reaction with CO2 and reduction of its reaction ability.

1 dwg, 3 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to a method of preparation of free-burning coal with the content of volatile substances not exceeding 16% whereat the said coal is heated to 200-395°C to destruct heat-sensitive coal lumps to be cooled and classified thereafter. Anthracite and/or hard coal are used as the free-burning coal. Heated coal is cooled at an ambient temperature.

EFFECT: stabilised grain size, simplified process, higher calorific value.

5 cl, 1 dwg, 4 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: method of producing structured organomineral binder includes at least one-time cavitational dispersion of a mixture of peat and water in ratio of 1:4-1:4.5, respectively. Dispersion is carried out until the mixture reaches temperature of 80-90°C, followed by cooling the mixture to room temperature to obtain the end product.

EFFECT: preserving binding properties of the product for a long period of time during storage.

FIELD: power engineering.

SUBSTANCE: invention includes mixing of ground solid fuel with a binder, briquetting of the mixture under pressure, where the ground solid fuel is coke dust with particle size of less than 1 mm, and the binder is coking sludge in the amount of 8.0-10% to the weight of coke dust, the mixture of coke dust and the binder is heated to 100°C, pressed in stages: first the load of 5-6 atm is set with a delay of 3-5 min and then up to 15 atm with a delay at the maximum load for 3-5 min, the finished fuel briquette is tempered at 250-300°C without access of air for 10-12 min. The produced briquettes may be used as fuel for combustion in domestic and industrial furnaces, and also for coking in chemical-recovery and metallurgical industry.

EFFECT: production of smokeless fuel briquettes of higher strength, improved environmental situation in coal processing regions, reduced prime cost of fuel briquettes.

2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing improved solid fuel. Described is solid fuel which is obtained by briquetting crushed low-grade coal, where the outer surface of the low-grade coal and the inner surface of pores of the low-grade coal is coated with a nonvolatile component contained in the low-grade coal, and content of heavy oil is less than 0.5 wt % with respect to the solid fuel.

EFFECT: low production costs and environmental load, as well as improved solid fuel.

2 cl, 3 ex, 5 dwg

FIELD: chemistry.

SUBSTANCE: briquette consists of a pressed lignocellulose body, containing: (a) 60-90 wt % cuttings of grass stalks and (b) 10-40 wt % scutched lignocellulose binder with degree of scutching of 38-75°RS (Shopper-Rigler degrees), preferably 45 70°RS, (said percentages being expressed in dry weight relative the dry weight of the sum of (a) and (b)) and from fuel which is liquid at room temperature, having a flash point of 30-150°C, which saturates the pressed lignocellulose body, wherein said briquette has a substantially cylindrical shape and has a central smoke conduit with a star-shaped cross-section. The method of making the briquettes comprises the following steps: (1) mixing an aqueous suspension of lignocellulose binder (b) with cuttings of grass stalks (a) in such proportions that the ratio (per dry weight) of the lignocellulose binder (b) to the cuttings of the grass stalks (a) ranges from 10/90 to 40/60; (2) moulding the mixture obtained in a suitable unit of the mould (encircling part)-anti-mould (encircled part) type at temperature of 40-120°C at pressure of 3-12 bar, applied for 5-120 s; (3) removing the obtained pressed body from the press mould; and (4) saturating the pressed body removed from the press mould with fuel which is liquid at room temperature, having flash point of 30-150°C.

EFFECT: obtaining a solid fuel briquette with low weight and a shape which provides multiple points of ignition, concealed inside the central smoke conduit.

15 cl, 3 dwg

FIELD: metallurgy.

SUBSTANCE: invention relates to application of BREC produced by stiff vacuum extrusion.Said process comprises coke fines, mineral binder and, if required, brown-coal char to be used as reducer in metallurgical furnace. Mineral binder in production of BREC is normally a cement and, if required, bentonite. Particle size of materials of the mix for BREC production does not exceed 5 mm, BREC weight not exceeding 0.3 kg.

EFFECT: optimum size, higher cold and hot strength.

3 cl, 2 ex

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

Fuel emulsion // 2554348

FIELD: chemistry.

SUBSTANCE: invention relates to a fuel emulsion for Diesels based on Diesel fuel with the addition of an alcohol, an emulsifier, a mixture of diethanolamine soaps and oleic acid and water, with the fuel composition additionally containing the lubricating additive DPA-Lubricor with the following component ratio, %: ethanol 5.0-50.0; water 0.5-5.0, alkenylsuccinimide 0.25-1.0; mixture of soaps of diethanolamine and oleic acid 0.2; lubricating additive 0.02; Diesel fuel - to 100.

EFFECT: application of the fuel emulsion makes it possible to reduce the rigidity of the burning process, reduce wear in fuel equipment and cylinder-piston group, and thus increase the Diesel reliability and service term.

2 tbl, 1 dwg

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