44results about How to "Improve coal efficiency" patented technology

The invention relates to a five-drill air inlet and outlet type coal mining machine, applicable to mining of a coal bed with pitch of 0-25 degrees, thin and extremely thin coal beds containing gas and a liberation coal bed. The five-drill air inlet and outlet type coal mining machine mainly comprises a hydraulic motor, a bracket, a thrust cylinder, a transmission case and a spiral bit. Five drills are transversely arranged, thus mining efficiency of the coal mining machine is improved; and three intermediate drills are arranged in advance, and mining energy consumption is reduced by utilizing a crisp pressing effect of the coal bed. A machine set is provided with a blast fan and an induced-draft fan to realize ventilation of a working surface, and gas concentration is diluted, thus the machine set can mine a high-gas coal bed. A transmission drill rod and a ventilation drill rod convey coal at the same time, thus coal conveying efficiency of the coal mining machine is greatly improved. The transmission case adopts a bevel gear driving manner, a transmission case body is of a sectional type structure, volume of the transmission case is reduced, and coal passing efficiency of the transmission case is improved, thus the drills are avoided from being blocked and turning. The machine set can realize ventilation of a mining working surface, efficient mining of high-gas thin and extremely thin coal beds is realized, and the machine set has high working stability, reasonable structural arrangement, strong component interchangeability and easiness in maintenance.

The invention provides a coal washing medium powder and a coal washing process. The coal washing medium powder contains magnetic material larger than 97.8% in content, particles 91.3% in content and sulfur less than 0.1% in content. The coal washing process includes the steps of 1), feeding the coal washing medium powder into a medium storage tank for standby; 2), feeding raw coal into a circulating coal crushing device prior to being fed into a classifier; 3), allowing the classifier to pick out crushed raw coal in the step 2); 4), feeding the raw coal materials stored in the medium storage tank into a three-product dense medium cyclone; 5), using a medium removing unit to have coal washing medium obtained in the step 4) recycled and reconfiguring dense medium suspension liquid; 6), using a dewatering unit to have watery coal subjected to medium removing in the step 5) dewatered to obtain clean coal, middlings and gauge products. By application of the coal washing process, the clean coal obtained by raw coal washing contains ash content stably around 0.5%, continuous coal washing can be achieved, and the coal washing process is suitable for being widely promoted and applied in the coal industry.

The invention relates to a smashing, screening and circulating coal feeding system which comprises a mixed coal bunker, a coal feeding material nozzle, an iron separator, a smasher and a number one coal feeding belt conveyor. The lower portion of the number one coal feeding belt conveyor is connected with the mixed coal bunker, the coal feeding material nozzle is positioned at the bottom of the mixed coal bunker, the lower portion of the coal feeding material nozzle is connected with the smasher, and materials after being processed are conveyed to a boiler by the belt conveyor. The smashing, screening and circulating coal feeding system is characterized in that a vibratory screening machine is additionally arranged at an outlet of the smasher, a material separating nozzle is arranged on the lower portion of the vibratory screening machine and connected with a number two below-screen belt conveyor, coal briquette with qualified granularity is conveyed to the boiler by the number two below-screen belt conveyor, materials on a screen of the vibratory screening machine are conveyed to a number three above-screen belt conveyor, and a hanging rack is arranged on the end portion of the number three above-screen belt conveyor. By the smashing, screening and circulating coal feeding system, resource waste caused by incomplete burning of large-sized coal is effectively reduced, burning efficiency of the coal briquette is improved, production cost of the boiler is reduced, and the problems of difficulty in raw coal separating and high load of the coal smasher are solved. The smashing, screening and circulating coal feeding system is suitable for closed cycle processes like smashing, screening, separating and the like of bulky materials.

The invention relates to the technical field of biomass fuel, in particular to high-performance biomass solid fuel and a preparation method thereof. The high-performance biomass solid fuel is preparedfrom the following components in parts by weight: 120 to 150 parts of straws, 30 to 45 parts of fruit peels, 4 to 8 parts of synergistic agent, 5 to 9 parts of combustion-supporting adhesive, 8 to 14parts of magnesium oxide, and 6 to 12 parts of carbide slag. The high-performance biomass solid fuel has the beneficial effects that the crop wastes such as the straws and the fruit peels are used asmain raw materials, so that the raw material is wide in source and low in price, not only can the waste be comprehensively utilized, the environmental pollution be reduced and the sustainable development of the resource be realized, but also the energy crisis problem at present can be effectively alleviated, and the charcoal ash after the biomass solid fuel is combusted to be used as fertilizer;and the carbide slag can reduce a combustion point of formed fuel and increase a melting point of the fuel ash, so that the problems that the existing biomass solid fuel is easy to slag, easy to accumulate and insufficient in combustion in the combustion process, and aids in the ignition of the solid fuel by arranging the magnesium oxide.

The invention relates to a hot water sterilizing machine applied to agriculture by burning coal, belonging to the field of agriculture equipment. A furnace of the sterilizing machine of the invention is divided into a coal furnace and a fire furnace by a fire grate, the top of the coal furnace is connected with an air inlet pipe, a boiler barrel comprises water space in the lower part and negative pressure vacuum space in the upper part, the negative pressure vacuum space is internally provided with a recuperator tube connected with the outside, the water space is internally provided with heat pipe bundles to form a gas duct. The hot water sterilizing machine applied to agriculture by burning coal can combine a vacuum boiler, gasification wraparound burning and a membrane wall heat transmission structure and continuously provide hot water with the temperature of 90-95 DEG C, has high thermal utilization factor and generates little pollution to the environment, in addition, optimal combination is carried out on the structure of the invention, so that the sterilizing machine has small volume, high thermal efficiency and good mobility. With a membrane-beneath irrigation system adopted, the high temperature hot water obtained in the invention is irrigated in soil or ground substances to heat the soil or ground substances to 50-60 DEG C which lasts for 1-2 hours, thus killing a large amount of mixed fungus in the soil and restoring land capability of the soil.

The invention provides a heavy medium continuous coal washing unit and a continuous raw coal crushing method. The heavy medium continuous coal washing unit comprises a cyclic coal crusher; a vibrating guiding device is disposed below the cyclic coal crusher; a belt conveyor is disposed between the vibrating guiding device and a raw material storage tank; the raw material storage tank is communicated with a raw coal entry of a tri-product heavy medium cyclone through a spiral conveyor; a suspension inlet of the tri-product heavy medium cyclone is communicated with a medium storage tank through a medium pump; a washed coal exit, a middling exit and a gangue exit of the tri-product heavy medium cyclone are respectively communicated with a medium removal device and a dewatering device; the medium removal device is communicated with the medium storage tank through a medium recovery pump. The heavy medium continuous coal washing unit and the continuous raw coal crushing method are available for continuous coal washing, labor cost and transport equipment cost for coal washing can be greatly reduced for enterprises, raw coal handling time is shortened, product structure optimization is facilitated for coal manufacturers, market competitiveness is improved, selling profit in products is increased, and washing rate of raw coal is increased for the whole coal industry.

The invention provides a coal dispatching system and method for a cluster type coal plant. The system comprises an incoming coal information collection module which is used for collecting the incomingcoal information of the coal plant, a bunker adding optimization module which is used for generating a bunker adding strategy, a coal storage information module which is used for acquiring and counting the coal storage information of each bunker of the coal plant, an operation information acquisition module which is used for acquiring the operation information of a coal generator set, a coal blending combustion module which is used for generating a coal blending combustion strategy according to the unit operation information and the coal storage information, a raw coal bunker adding optimization module which is used for generating a final raw coal bunker adding strategy based on the coal blending combustion strategy and updating the coal storage information of each bunker, and a display output module which is used for displaying the coal storage information of each bunker, the bunker adding strategy information and the coal blending combustion strategy information. According to the technical schemes, the problems of low unit coal efficiency and high power supply coal consumption existing in existing coal dispatching of the cluster honeycomb type coal plant are solved, the coal efficiency of the generator set can be improved, the power supply coal consumption is reduced, and economic benefits are guaranteed.

The invention discloses a boiler decoking agent and belongs to the field of decoking agents. According to the boiler decoking agent, zinc powder and flake graphite are used as raw materials, and concentrated nitric acid is used for carrying out intercalation on the flake graphite and expanding to prepare expanded graphene; ball-milled zinc powder is ultrafine powder and is used as a zinc source; ethanol is used as a dispersant to prepare a composite material with a good structure; in a preparation process, starch is used and pores of starch colloid can be filled with the composite material andis used as a crosslinking agent, and a molecular chain of the starch is crossly linked, so that the surface of the starch with a porous structure is more dense; effective components deposited in thestarch are prevented from losing in preparation and storage processes. By adopting the boiler decoking agent, the problem of a current boiler decoking agent that the efficiency of removing coked fouling of a boiler wall is low is solved.

The invention discloses an efficient track structure for a coal inventory rail robot. The track structure can be flexibly changed according to requirements. According to the track structure, the steering track is rotated and adjusted to be matched with the transverse track to guide the walking change direction of the coal inventory robot and coal inventory walking time is reduced. The track structure is characterized in that two fixed tracks and two U-shaped tracks are combined to form a straight circular track; the two U-shaped tracks are located at the two ends of the straight circular trackrespectively. The two fixed rails are parallel to each other; the two ends of the U-shaped rail are connected with the corresponding ends of the two fixed rails correspondingly. A plurality of positions on the fixed rail are broken to form a plurality of notches, the sections of the notches are arc-shaped surfaces, a plurality of suspensions are arranged on the fixed rails, a plurality of suspensions are arranged on the U-shaped rails, a first infrared receiver is arranged on the fixed rails, and the first infrared receiver is close to the notches.

The invention belongs to the technical field of catalyst processing, and particularly relates to a coal combustion catalyst with demercuration effects and a preparation method thereof. The invention particularly relates to the high-activity coal combustion catalyst and the preparation method thereof. The catalyst is prepared from the following raw material ingredients: a cerous nitrate solution, Al2O3, ferric nitrate, CuCl2, a yttrium nitrate solution, a gadolinium nitrate solution, MnO2, diatom ooze, hydrotalcite, palygorskite, calcium carbonate, loofah sponge, straw, corn stalks, chitosan, citric acid, hexahydrocresol, polyoxyethylene ether and a raising agent. The catalyst has high chemical stability; the activity can be maintained in a long time; the catalyst can be recovered to be repeatedly used; by using the catalyst, the combustion speed of fire coal can be effectively accelerated; the effects of denitration, sulfur fixation and demercuration can be achieved; the discharge quantity of smoke can be reduced; the environment pollution is reduced, and the application value is high.

The invention discloses a preparation method of a fire coal type boiler for fire coal increasing effect and bonding of crushed coal, belongs to the technical field of organic or inorganic synthesis, and in particular relates to a method using sulphur as an initiating agent and potassium carbonate, potassium nitrate, sodium nitrite, potassium permanganate, cellulose and maltodextrin as a combustion-supporting adhesive.

The invention provides a pre-pyrolysis type heating stove for civil use and a heating method thereof. The pre-pyrolysis type heating stove for civil use comprises a stove body, a longitudinal separating plate is arranged on the stove top wall positioned in the stove body, the inner part of the stove body is divided into a first cavity chamber and a second cavity chamber, and the bottom of the first cavity chamber communicates with the bottom of the second cavity chamber; the first cavity chamber is a convection heat transfer zone, grates are arranged on the middle part of the second cavity chamber, and the second cavity chamber is divided into an upper zone and a lower zone by the grates; the zone above the grates is an oxygen-free pyrolysis zone, and the zone under the grates is a semi-coke combustion zone; a feed inlet is formed in the stove wall positioned on the oxygen-free pyrolysis zone, primary air openings are formed between the oxygen-free pyrolysis zone and the semi-coke combustion zone and located under the grates, heat pipes are arranged in the second cavity chamber, and the oxygen-free pyrolysis zone communicates with the semi-coke combustion zone through the heat pipes; a communicating zone between the bottoms of the first cavity chamber and the second cavity chamber is a burnout zone, the deslagging grate is arranged between the semi-coke combustion zone and theburnout zone, and a second wind opening is formed in the burnout zone. According to the pre-pyrolysis type heating stove for civil use and the heating method thereof, the heating stove body is improved and optimized, the pollutant discharging of the heating stove is reduced, the combustion is controlled, and the operation labor intensity is reduced.