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

The invention provides a coal washing medium powder and a coal washing process. The content of magnetic substances in the coal washing medium powder is greater than 97.8%, the particle content in the coal washing medium powder is 91.3%, and the sulfur content of the coal washing medium powder is less than 0.1%. The coal washing process includes the following Steps: ① Send the above-mentioned coal washing medium powder into the medium storage tank for standby; ② Send the raw coal into the circulating coal crushing equipment and enter the sorter; ③ The sorter will select the raw coal after being crushed in step ②; ④ Put the raw coal in the raw material storage tank The raw coal materials stored in the internal storage are sent to the three-product dense medium cyclone; ⑤The coal washing medium obtained in step ④ is used to recover the coal washing medium obtained in step ④, and the dense medium suspension is reconfigured; Water-containing coal is dehydrated to obtain clean coal, medium coal and gangue products; the invention can stabilize the ash content in the clean coal obtained after raw coal washing at about 0.5%, and can continuously wash coal, which is suitable for large-scale popularization and application in the coal industry .

The invention relates to a dust-free environment-friendly coal firing power generation method. The method comprises the steps that 1, feed coal is conveyed, wherein the feed coal is preheated and enters a conveyor for feeding; 2, the conveyor conveys the feed coal into a coal grinding device to be smashed, and meanwhile hot wind is introduced to dry smashed coal dust; 3, the coal dust which passesthrough the coal grinding device is driven to enter a separator by the hot wind to be graded, qualified coal dust is grinded along air flow, and unqualified rough coal dust is grinded with the feed coal again under the effect of separator blades; 4, fine coal dust reacts with high-temperature steam and oxygen with the temperature above 200 DEG C to generate combustible synthesis gas; 5, the combustible synthesis gas is compressed by a gas compressor and sprayed into a boiler by an ejector for combustion; 6, high-temperature and high-pressure water vapor is used for driving a steam electric generating set to work and accordingly driving an electric generator to generate electricity. According to the dust-free environment-friendly coal firing power generation method, the fine coal dust is subjected to reaction and generates the synthesis gas, the coal firing efficiency is improved, the following flue gas and dust are reduced, burning is sufficient through spraying, through desulfurization and denitration reaction, toxic gas in mixed gas and flue gas is removed, the flue gas and water vapor are recycled, and the economic benefit is improved.

The invention discloses a high-efficiency track structure for a Panmei track robot, which discloses a track structure that can be flexibly changed according to requirements, through the rotation adjustment of the steering track and the horizontal track to guide the Panmei robot to change its walking direction, and reduce the Panmei walking time The track structure is characterized in that two fixed tracks and two U-shaped tracks are combined to form a straight circular track, and the two U-shaped tracks are respectively located at both ends of the straight circular track, and the two fixed tracks are parallel to each other. The two ends of the U-shaped track are respectively connected to the corresponding ends of the two fixed tracks, and multiple places on the fixed track are broken to form a plurality of slots, and the section of the slots is an arc surface, and the fixed track is equipped with A plurality of suspensions, a plurality of suspensions are arranged on the U-shaped track, a first infrared receiver is arranged on the fixed track, and the first infrared receiver is close to the slot.

The invention discloses a double-flue direct burning type heating furnace, and belongs to heating furnaces. The double-flue direct burning type heating furnace structurally comprises a furnace body, a hearth and a feeding opening. A box is arranged on the outer side of the furnace body, and comprises an outer-layer box body, an inner-layer box body and an interlayer, and a smoke outlet and a hot water outlet pipe are arranged at the top of the box. An upper smoke outlet channel is arranged at the position, between an upper furnace ring and the hearth, of the furnace body, a lower smoke outlet channel is arranged between one side of the upper portion of the hearth and the furnace body, a plurality of vertical hot water circulating pipes are arranged in the lower smoke outlet channel, an upper separation plate and a lower separation plate are arranged on the upper portion and the lower portion of the lower smoke outlet channel respectively, a water inlet cavity of the furnace body is communicated with a water return pipe, a lower furnace ring hot water circulating channel is arranged in a lower furnace ring, an upper furnace ring hot water circulating channel is arranged in the upper furnace ring, a connecting pipe is arranged between the upper furnace ring and the lower furnace ring, and a plurality of horizontally-arranged horizontal hot water circulating pipes are arranged in the inner-layer box body. The double-flue direct burning type heating furnace has the advantages of being capable of improving coal-fired heating efficiency and saving fire coal, being compact and reasonable in structure and the like.

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 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.