110results about How to "Avoid blending" patented technology

The invention discloses an afterheat recovery system and an afterheat recovery method of dry granulating liquid slag. The system comprises a granulating cabin, a moving bed and an afterheat recovery system, the inner surface of the granulating cabin is provided with a granulating cabin water cooling wall, the center of the top of the granulating cabin is provided with a slag pipe, the slag pipe extends into the granulating cabin, the lower part of the tail end of the slag pipe is provided with a centrifugal granulator, the centrifugal granulator is connected with a motor arranged at the lower part of the centrifugal granulator, the lateral side of the centrifugal granulator is provided with an air supply pipeline, an annular air opening is formed between the centrifugal granulator and the air supply pipeline, the lower part of the granulating cabin is provided with the moving bed, the inner surface of the moving bed is provided with a moving bed water cooling wall, the top of the moving bed is provided with an air outlet, the bottom of the moving bed is provided with a slag discharge device, an air inlet device is arranged above the slag discharge device, the afterheat recovery system comprises a primary dust remover, an afterheat boiler, a secondary dust remover, an exhaust fan and a chimney which are connected in sequence, and the primary dust remover is connected with the air outlet arranged at the top of the moving bed. The system and the method effectively solve the problems of heat recovery and furnace slag granulation of equipment such as a blast furnace.

The invention discloses a mechanical and jet flow combined exploitation method and a mechanical and jet flow combined exploitation device for natural gas hydrates in non-stratified rock of shallow strata in seabed. The mechanical and jet flow combined exploitation method and the mechanical and jet flow combined exploitation device are used for crushing and exploiting the natural gas hydrates in the non-stratified rock of the shallow strata in the seabed in a composition manner. The mechanical and jet flow combined exploitation method includes drilling pilot holes by an intelligent guide drilling tool, unfolding a mechanical crushing cutter arm after the intelligent guide drilling tool reaches preset locations, carrying out rotary cutting and crushing, starting to carry out jet flow crushing by spray nozzles, opening a flow regulating device, isolating recovery regions from goaves, separating hydrates from sediment by a downhole separator, filling the sediment with CO2, realizing effects of curing backfilled particles and backfilling the sediment in an in-situ manner. The mechanical and jet flow combined exploitation method and the mechanical and jet flow combined exploitation device have the advantages that the crushing radiuses and the exploitation spaces can be enlarged; crushed particles and the backfilled particles can be prevented from being mixed with one another; the sediment which is sorted by the downhole separator is filled with the CO2, accordingly, natural gas in the sediment can be displaced, effects of curing agents can be realized, the strength of backfilled layers can be enhanced, and the goaves can be prevented from collapsing.

The invention discloses a sealed hot channel-full air returning dried-air energy central air conditioning system for a data center. The sealed hot channel-full air returning dried-air energy central air conditioning system comprises a dried-air energy central air conditioning unit; the dried-air energy central air conditioning unit is connected with the data center through an air returning pipe and can recycle return air in the data center and process the return air so that the return air can become air meeting the air supply condition; and the dried-air energy central air conditioning unit is further connected with the data center through an air supply pipe, and the air meeting the air supply condition can be fed into the data center through the air supply pipe and a machine room air supply outlet. According to the sealed hot channel-full air returning dried-air energy central air conditioning system for the data center, the full year cool supply requirement of the data center can be effectively ensured, the phenomenon that disordered air distribution occurs in the data center can be avoided, and meanwhile reasonable adjustment of three operation modes can be achieved according to different weather conditions.

The invention discloses a titanium steel composite board production method. The method comprises the steps that a steel plate is rolled on a hot mill to be 6 mm thick, and air cooling is carried out on the steel plate, the surface of the steel plate obtained after air cooling is carried out and the surface of the titanium plate are cleaned thoroughly, and then the steel plate is rolled by 2-5 passes under the temperature condition being 850 DEG C; the steel plate comprises chemical components being 0.16% of C, 0.61% of Mn, 0.2% of Si, 0.23% of S, 0.019% of P, 0.3% of Cr, 0.3% of Ni, 0.3% of Cu, 0.08% of As, and the balance Fe; according to the chemical components, the titanium plate comprises 0.08% of Fe, 0.08% of O, 0.05% of C, 0.0112% of N, 0.01% of Si, 0.01% of H and the balance Ti. The chemical components of the titanium plate and the steel plate are strictly controlled, the phenomenon that the composite board is mixed with impurities is effectively avoided, and the method is simple and low in production cost.

The invention relates to a nanometer-material-compounded long-glass-fiber-reinforced polypropylene material and a preparing method thereof. The reinforced polypropylene material is prepared from, by weight, 40%-85% of polypropylene, 10%-50% of long glass fibers, 1%-5% of nanometer-material master batches, 1%-5% of compatibilizing agent and 0.2%-1% of antioxidant. According to the preparing method, nanometer materials are prepared to master batches to participate in the molding technology, the nanometer-material particles are evenly dispersed in polypropylene melt, and the performance of the composite material is greatly improved. The nanometer-material-compounded long-glass-fiber-reinforced polypropylene material has the excellent mechanical performance, and meanwhile has the excellent warping resistance.

The invention relates to a pretreatment device and a soil remediation method using the same. The pretreatment device comprises a slope feeding mechanism used for feeding, a smashing mechanism used forsmashing soil, a screening mechanism used for screening the soil and a discharging mechanism used for discharging the screened soil, wherein the screening mechanism comprises a screening support, a first screening plate, a second screening plate and a third screening plate are sequentially installed on the screening support, screen meshes with different hole diameters are installed on plate bodies of the first screening plate, the second screening plate and the third screening plate respectively, and an eccentric structure for driving the first screening plate, the second screening plate andthe third screening plate to achieve eccentric motion is installed on the screening support. The soil remediation method comprises the following steps: soil is collected, sprayed, wetted and dried, then treated through the pretreatment device, flushed through a metal remediation agent and an organic matter remediation agent and finally dried and backfilled. The eccentric structure drives the screening mechanism to screen soil, noise in the screening process is reduced, and soil screening is more thorough through multi-stage screening.

The invention discloses an efficient temperature stratification-type water energy-storage water-storage device, and relates to the technical filed of water energy storage, for solving the technical issue of improving the energy storage efficiency. The device comprises a water storage groove and tubular water distributors, and is characterized in that the upper part and the lower part of the inner cavity of the water storage groove are respectively provided with a water seepage flat-type porous medium plate; the plate surface of each porous medium plate is in parallel with the water level, and the periphery of each porous medium plate is jointed with the inner wall of the water storage groove and is water-proof and sealed; the tubular water distributors are two, and are all distributed in the inner cavity of the water storage groove, wherein one tubular water distributor is positioned above the porous medium plate at the upper part, and the other tubular water distributor is positioned below the porous medium plate at the lower part; and the opening of the tubular water distributor at the upper part is upwards, the opening of the tubular water distributor faces downwards, and the two tubular water distributors are communicated with the outer part of the water storage groove through a pipeline. The device provided by the invention has high energy storage efficiency.

The invention discloses a thermoplastic polyvinyl alcohol-polylactic acid blending material, which is prepared from 50-90 parts of polyvinyl alcohol, 10-50 parts of polylactic acid, 15-50 parts of plasticizer and 0.25-2 parts of catalyst in a reactive extrusion manner, wherein the tensile strength is 19.1-31.6MPa; and the elongation at break 180-590%. The invention also discloses a preparation method of the thermoplastic polyvinyl alcohol-polylactic acid blending material. A plasticizer is added to the PVA (polyvinyl alcohol), so that the PVA can be subjected to thermoplastic process and then blended with PLA (polylactic acid); and a specific catalyst is added in the blending process. Therefore, melt blending of the PVA and the PLA is achieved; the compatibility is improved; the mechanical property and the processability of the material are greatly improved; and the thermoplastic polyvinyl alcohol-polylactic acid blending material is convenient to process, short in production cycle, low in cost, and easy to achieve industrialization, and does not pollute the environment in the production process.

The invention belongs to the technical field of aero-engine and gas turbine cooling, and relates to a laminate cooling structure adopting polygonal turbulent flow columns. The laminate cooling structure comprises an air inlet hole positioned in an air inlet plate, an air outlet hole positioned in an air outlet plate, the turbulent flow columns and a spiral cavity, wherein the turbulent flow columns are positioned in the center of the spiral cavity and form a cold air channel, and the number of the edges of the turbulent flow columns is any one of 3, 4, 5, 6 to n; the cross sections of the airinlet hole and the air outlet hole are in a parallelogram shape, the air inlet hole and the air outlet hole are smoothly connected with the channel in the spiral cavity through an arc-shaped sliding way, and the air inlet hole and the air outlet hole extend outwards from the two adjacent edges of the polygonal turbulent flow columns; and the included angles between the center line of the air inlethole and the horizontal plane and between the center line of the air outlet hole and the horizontal plane are an incident angle A1 and an emergent angle A2 correspondingly, and the incident angle A1and the emergent angle A2 are acute angles. According to the laminate cooling structure, the spiral cavities which are adjacent in space but do not interfere with each other avoid impact and mixing ofcooling airflow in a laminate, so that the flow resistance and the flow loss can be reduced, and the flow resistance loss is greatly reduced.

The invention belongs to the technical field of pressurized carbon dioxide (CO2) zero-emission solid oxide fuel cell (SOFC) composite power generation, in particular to an integrated oxygen transmission membrane (OTM) pressurized CO2 zero-emission SOFC / gas transmission (GT) / air transmission (AT) / steam turbine (ST) composite power system. An SOFC / GT / ST composite power system which is free from recycling CO2 is adopted as a benchmark system to integrate the OTM, the high temperature AT and a CO2 recycling unit to obtain a CO2 zero-emission composite power system which has high efficiency, saves energy and is environment-friendly, so the energy of the system can be adequately and efficiently utilized in a gradient way, the efficiency is high, only CO2 and H2O are discharged after the combustion, so the CO2 is convenient to separate and collect, the power consumption can be reduced, and high efficiency can be realized after the CO2 is recycled.

The invention relates to a data center energy-saving cooling system based on the heat pipe technology. The data center energy-saving cooling system comprises an additionally-installed heat cabinet, an additionally-installed refrigerator, a heat pipe system, an air exhaust fan and a closed pipeline. The additionally-installed heat cabinet is connected to the back of a cabinet, the additionally-installed refrigerator is connected to the back of the additionally-installed heat cabinet, one end of the closed pipeline is communicated with the upper end of the additionally-installed refrigerator, the other end of the closed pipeline is communicated with an air conditioner system, the air exhaust fan is installed at the joint of the additionally-installed refrigerator and the closed pipeline, and a vent hole is formed in the bottom of the additionally-installed refrigerator and used for being communicated with a floor air supplying system. The heat pipe system comprises a plurality of heat pipes. Each heat pipe comprises an evaporating section and a cooling section, wherein the evaporating section is located in the additionally-installed heat cabinet, the cooling section is located in the additionally-installed refrigerator, and one end of the heat pipe is connected with the back wall of the cabinet. The temperature of hot air mass exhausted out of an outlet in the back of the cabinet can be further reduced, the overall heat dissipation efficiency of a machine room is improved, and the power consumption of a refrigeration device for cooling a server in the machine room is reduced.

The invention provides a solar heat supply system based on cross-seasonal water body heat storage. The solar heat supply system mainly comprises a solar heat-collecting system, a cross-seasonal heat storage water body, a heat pump, a buffer water tank, a heat user, an auxiliary heat source, a heat exchanger and a control system. The solar heat-collecting system communicates with the cross-seasonal heat storage water body. The cross-seasonal heat storage water body is connected with the heat exchanger. The heat exchanger directly communicates with the buffer water tank or is connected with the buffer water tank through the heat pump. The buffer water tank communicates with the heat user. The solar heat supply system is further provided with the auxiliary heat source which is directly connected with the buffer water tank. The solar heat supply system based on cross-seasonal water body heat storage is suitable for supplying heat to buildings in northern China urban areas where solar energy resources are rich and relatively rich.

The invention belongs to the technical field of molten carbonate fuel cell hybrid power generation, and in particular relates to a coal gasification pressurized molten carbonate fuel cell hybrid power system with a CO2 recycling function. The hybrid power system is mainly composed of a deep cooling air separation unit, a coal gasification and purification unit, a molten carbonate fuel cell, a waste heat boiler, a steam turbine system and a CO2 recycling unit; coal synthesis gas is adopted for providing fuel to the fuel cell and CO2 in exhaust gas can be recycled; an afterburning chamber of the MCFC (molten carbonate fuel cell) adopts oxygen-enriched combustion, the products only include CO2 and H2O, the CO2 recycling energy consumption can be reduced as no N2 is blended in a CO2 separation and compression process; and the hybrid power system fully utilizes waste heat in the high-temperature exhaust gas of the MCFC can be fully utilized, and CO2 in the exhaust gas of the system can be captured in a low energy consumption manner.

The invention belongs to the field of materials and in particular relates to a high-conductivity polythiophene conductive coating layer and a preparation method and application thereof. The conductive coating layer is obtained by performing in-situ polymerization on thiophene or thiophene derivatives on an insulating polymer film by a chemical oxidation method. A polymer monomer preferably comprises thiophene and 3-methylthiophene; the insulating polymer film preferably is made from polyethylene glycol terephthalate, polyamino-bis-mieimide or polystyrene. Furthermore, the invention also provides a preparation method of the polythiophene conductive coating layer with high conductivity; by virtue of tight connection between polythiophene and the insulating polymer film, the conductive coating layer is high in conductivity and has the flexibility of general polymers. The conductivity of the conductive coating layer can be up to 10<-3>S / cm, and the conductive coating layer can be applied to the fields of electromagnetic wave shielding, static electricity prevention, organic electronic devices and the like.

The invention belongs to the technical field of pressurization CO2 zero discharge soild oxide fuel battery composite power, and particularly relates to a pressurization CO2 zero discharge SOFC (solid oxide fuel cell) / GT (gas turbine) / AT (air turbine) / ST (steam turbine) composite dynamical system of integrated OTM (oxyanion transmission film) cathode exhaust producing oxygen. The composite dynamical system is characterized in that an SOFC / GT / AT / ST composite dynamical system which cannot recover CO2 is utilized as a reference system so as to integrate an OTM, a high temperature air turbine (AT) and a CO2 recovery unit to obtain a high-efficiency energy-saving environment-friendly CO2 zero discharge composite dynamical system, and the energy of the system can be fully and effectively used in a cascading manner, and the efficiency is high; and the combustion exhaust is only CO2 and H2O so as to be convenient to separate and collect CO2, the power consumption is less, and the system can keep a higher efficiency after recovering CO2.

The invention relates to a multi-area tube bundle of a condenser, which is characterized in that the multi-area tube bundle consists of at least two rows of small tube bundles, wherein steam flow channels are at two sides of each row of small tube bundles, a bottom reheating area is at the lower part of the small tube bundle, each row of small tube bundles comprises a trapezoidal main condensing area, a steam toward area is formed at the upper end of the main condensing area, an octagonal blank area is reserved at the bottom of the main condensing area, the axis of the octagonal blank area is overlapped with the axis of the main condensing area, the axis in the main condensing area is provided with an air pumping passage which is communicated with the octagonal blank area, the left side and the right side of the main condensing area are symmetrically provided with downwards oblique small steam passages, the middle part of the octagonal blank area is provided with an oblong air cooling area, and the main condensing area and the air cooling area are formed by tightly arranging tubes in triangular arrangement with each other. The multi-area tube bundle of the condenser has the advantages of smooth steam flow line, no dead area and good heat transfer performance.

The invention relates to an oil product sequence conveying system and a method, and belongs to the field of pipeline conveying. The oil product sequence conveying system is used for sequentially conveying a plurality of oil product pipelines, and solves the problem that oil products are mixed in an existing oil product sequence conveying process. According to the technical scheme, the two ends ofa main pipeline are provided with a ball serving barrel and a ball collecting barrel, and when the oil product is conveyed, an oil product is conveyed into the main pipeline through the ball serving barrel and then the next oil product is conveyed; and after the pipe cleaning device arrives at a ball collecting cylinder, a storage tank and a pipeline corresponding to the oil return pipeline are switched, and the oil product at the rear end of the pipe cleaner is conveyed to another pipeline and a storage tank. The pipe cleaner isolates the conveying process and reduces mixing of two kinds of media on the oil mixing interface; and meanwhile, the pipe wall is scraped by the pipe cleaner, so that the residues of the front-end oil product on the wall surface of the pipeline are greatly reduced, and the mixing of the front-end oil product and the rear-end oil product is reduced.

The invention discloses an AI smart food safety early warning traceability assistant management platform, which comprises intelligent monitoring equipment, and is characterized in that the intelligent monitoring equipment comprises personnel health monitoring equipment and food safety monitoring equipment; the personnel health monitoring equipment is installed at the entrance of a target area, and is used for performing body temperature detection and disinfection monitoring on people who are about to enter a target area; the food safety monitoring equipment is installed in a target area and used for detecting and monitoring related content of environmental sanitation and safety of the target area, food materials and processing devices related to food material processing and transmitting related detection information and monitoring pictures to the intelligent cloud platform in real time. According to the AI smart food safety early warning traceability assistant management platform, catering kitchen full-informatization management can be realized, the catering kitchen full-informatization management is really fine, standard and normative, safety accidents are completely eradicated, and early warning in advance, supervision in the event, traceability after the event and nutrition reminding are realized.

The invention relates to the technical field of road cold-spraying and scribing, in particular to a road cold-spraying and scribing spraying machine. The road cold-spraying and scribing spraying machine comprises a vehicle frame, wheels are installed at the bottom of the vehicle frame, an air compressor is installed at the upper end of the vehicle frame, a paint tank is fixed to one side of the air compressor, a spray pipe is connected to one side of the paint tank in an inserted mode, a spraying mechanism is arranged at one end of the spray pipe, a guiding wheel is fixed to the lower part ofthe spraying mechanism, and the spraying mechanism comprises a fixing rod, a clamping piece fixed to the top end of the fixing rod, a guiding rod arranged inside the clamping piece, a sliding block connected to the upper part of the guiding rod, a connecting rod connected to the top end of the sliding block, and a clamping ring arranged on the outer side of the connecting rod. According to the road cold-spraying and scribing spraying machine, the sliding block moves on the guiding rod, thus a spray head can be replaced to the left part and the right part of a machine body, the road cold-spraying and scribing spraying machine adapts to the personal eye using habit, thus pre-aiming is more accurate, and working is smoother; through shielding of the guiding wheel, admixing of dust is avoided,meanwhile, the guiding wheel facilitates guiding, and wire-passing bending is avoided; and the spraying quality is improved, the service life of a spraying line is prolonged, and the cost is saved.

The invention discloses a graded pyrolysis gasifying system and application thereof, and a treatment method of leather-producing wastes. The system comprises a first rotary kiln and a second rotary kiln, wherein the first rotary kiln comprises a leather crushing feeding opening, a high-temperature smoke inlet, a medium-temperature smoke outlet, a first rough gas outlet and a second byproduct discharging opening; the second rotary kiln comprises a leather sludge feeding opening, a medium-temperature smoke outlet, a first rough gas outlet and a sludge slag discharging opening; the medium-temperature smoke outlet of the first rotary kiln is communicated with the medium-temperature smoke inlet of the second rotary kiln; the high-temperature smoke inlet is communicated with a secondary combustion chamber; the first rough gas outlet and / or the second rough gas outlet is communicated with the secondary combustion chamber. The treatment method of the leather-producing wastes is clean and efficient; the leather-producing wastes can be reduced by 90% or more.

The invention provides a folded plate type gas liquid dividing device, and in particular relates to a novel gas liquid dividing device suitable for a single-tower double-circulation system. The folded plate type gas liquid dividing device comprises a cylinder body; a plurality of flow guide plates are fixedly arranged in the cylinder body sequentially; an annular liquid collecting groove is formed below the flow guide plates; the cross section of each flow guide plate is shaped like a broken line, and each flow guide plate is provided with at least one V-shaped part and at least one reverse V-shaped part; projections of the reverse V-shaped part of one of the adjacent two flow guide plates and the V-shaped part of the other one of the adjacent two flow guide plates in the vertical direction are partially overlapped or completely overlapped. A plurality of flow guide plates with special shapes form a flue gas channel, and when flue gas treated by a primary circulation loop, liquid drops in the flue gas is separated from the flue gas and return to a slurry accommodating pool in an absorbing tower, so primary circulation slurry and secondary circulation slurry can be effectively separated, and the desulfurization efficiency of secondary circulation is improved; the advantages of simple structure, convenience and quickness in mounting, small resistance loss and the like are achieved.

The invention discloses a technology for controlling and eliminating weeds in an alfalfa field by film-side planting. According to the technology, the coverage of the weeds in the alfalfa field can be effectively controlled, and can be reduced by 21 to 46 percent; in addition, the annual yield of alfalfa hay is greatly increased by 19.8 to 152.6 percent; total yield per hectare in three years is increased by 9,387.6 to 9,438.4kg, and if per ton of alfalfa hay is 2,400, economic benefits per hectare can be increased by 22,530 to 22,652 yuan, and efficiency per hectare is equivalently improved by 1,502 to 1,510 yuan; moreover, the using amount of a weed killer is reduced, pollution to the environment is reduced, and the target of low-environmental consumption production of the alfalfa industry can be effectively promoted.

The invention discloses a few friction pair seawater desalination high-pressure pump and energy recovery integrated unit. The integrated unit comprises a seawater hydraulic pump and a seawater hydraulic motor, wherein two sliding shoe pairs in a traditional swash plate type plunger pump are reduced. A structural form that a pump and a motor are arranged on two sides of a main shaft turntable is adopted, a pump end flow distribution swash plate is communicated with a low-pressure seawater inlet and a high-pressure seawater outlet, and a motor end flow distribution swash plate is communicated with a low-pressure strong brine outlet and a high-pressure strong brine inlet. During working, the motor drives the hydraulic pump to suck raw seawater and pressurize, the generated high-pressure seawater is filtered by a reverse osmosis film into the high-pressure strong brine to enter the hydraulic motor, and the high-pressure strong brine is discharged through a low-pressure strong brine outletafter energy recovery is completed. The integrated unit is advantaged in that an energy recovery device overcomes defects that an energy recovery device is low in integration level, large in number offriction pairs, capable of mixing salt / seawater and the like, and the integrated unit has obvious technical advantages of high energy recovery efficiency, no mixing, long service life and the like.

The invention provides a hot plate temperature-equalization mixing-free turbine blade cooling device and method. The hot plate temperature-equalization mixing-free turbine blade cooling device comprises a temperature-equalization hot plate and a turbine blade. The temperature-equalization hot plate comprises an evaporation section, a condensation section and an end cover. The evaporation section is located in the turbine blade. A metal wire mesh of the hot plate is arranged on the outer circle of the hot plate. A steam channel is arranged in the temperature-equalization hot plate. The condensation section is closed by the end cover. Except the portion, connected with the turbine blade, of the wall face, the metal wire mesh is distributed on the rest of the wall face on the inner side of the condensation section, and fins are arranged on the outer side of the condensation section. The turbine blade is connected with the end cover. The outer surface of the turbine blade is covered with a thermal barrier coating. The temperature-equalization mixing-free turbine blade cooling device and method have the beneficial effects that the temperature distribution of the turbine blade is uniform; gas film cooling is replaced with the hot plate temperature-equalization mixing-free technology, mixing of cooling air and high-temperature gas is completely avoided, and reliability of engines is improved; and the cooling efficiency is substantially improved, the fuel consumption is lowered, and efficiency of the engines is improved.

The invention provides a treatment method for phenolic water produced by a gas producer. According to the method, lower-segment high temperature gas of the gas producer heats and evaporates water so as to obtain high temperature steam, and the high temperature steam is used as an intermediate heat-transferring medium for heating air, thereby recovering heat in the high temperature gas; and a part of the produced high temperature steam atomizes phenolic water into tiny droplets through a steam atomizing nozzle, atomized phenolic water and the high temperature steam are used as a gasifying agent together and sent to the gas producer, and phenolic water is completely decomposed after burning at a high temperature of more than 1100 DEG C, producing no secondary pollution. Since the method adopts waste heat of the high temperature gas produced by the gas producer, no energy is consumed except a small amount of electric energy needed by a water pump, so operation cost is low, low temperature steam produced in the jacket of the gas producer can be recovered, and steam with higher pressure and temperature can be produced, which is more beneficial for utilization of steam.

The invention discloses polycrystalline silicon and a preparation method thereof. The preparation method is characterized by comprising the following steps: paving a plurality of polycrystalline silicon seed crystals in the center of the bottom of a crucible to form a seed crystal layer; paving a plurality of parallelly arranged polycrystalline silicon slices between the seed crystal layer positioned at the bottom of the crucible and the periphery of the crucible to form a flat paving layer; arranging silicon materials which are in a molten state on the seed crystal layer and the flat paving layer to ensure that the heating temperature of the bottom of the crucible is lower than the melting points of the polycrystal seed crystals and the polycrystalline silicon slices; and controlling the temperature inside the crucible to gradually form a temperature gradient upwards along the direction of a plane, where the bottom of the crucible is located, to enable molten silicon materials to form crystals on the seed crystal layer and the flat paving layer so as to obtain a polycrystalline silicon ingot with the polycrystalline silicon as a component. By adopting the mode, the preparation method disclosed by the invention has the advantages that long crystals are less misplaced, the crystal boundary is proper, the conversion efficiency of a battery made from the crystal is improved by 0.4-0.9, a prepared silicon ingot is complete polycrystalline silicon, the subsequent stripping of different components is omitted and the utilization ratio of the silicon materials is increased.

The invention discloses a retirement composite insulator surface cleaning system. The retirement composite insulator surface cleaning system comprises a conveying device and a cleaning device located above the conveying device, the conveying device comprises conveying chains and limiting accessories arranged on the conveying chains and used for containing retirement composite insulators, the conveying chains are multiple equal-interval synchronous coaxial chains and have the width allowing the retirement composite insulators to be contained, and the cleaning device comprises a spraying mechanism, a cleaning mechanism, a flushing mechanism and an air drying mechanism which are sequentially arranged. By means of the retirement composite insulator surface cleaning system, the problem about dirt cleaning of the surfaces of the recovered retirement composite insulators in a power grind is solved.

The invention belongs to the technical field of IGCC (integrated gasification combined cycle) power generation for capturing CO2 by an oxygen-enriched combustion method, and in particular relates to an IGCC system for capturing CO2 by an integrated OTM (oxygen ion transfer membrane) oxygen-enriched combustion method. On the basis of an IGCC system for capturing CO2 by adopting a deep cooling air separation oxygen-enriched combustion method, an integrated OTM unit, a coal gasification unit, a purification unit, a gas turbine, an afterheat boiler, a steam turbine and a CO2 recycling unit form a CO2 zero-emission system; the OTM unit is used for separating air, and obtained pure oxygen is mixed with carbon dioxide and then is conveyed into a combustion chamber of the gas turbine for combustion of purified gas. According to the IGCC system, the problem that the conventional IGCC system for capturing CO2 by the oxygen-enriched combustion method is low in efficiency is solved, low-energy-consumption CO2 recycling is realized, and high efficiency of the system is retained.

The invention relates to the field of energy storage, and provides a high-temperature heat accumulation system. The system comprises a low-temperature tank, a high-temperature tank, a heat tracing device and a gas-liquid separator, wherein a first liquid inlet valve of the low-temperature tank selectively communicates with outlets of an external heat source, a cold source and a heat accumulation liquid source, and a second liquid inlet valve of the gas-liquid separator and a third liquid inlet valve of the heat tracing device selectively communicate with the outlets of the external heat sourceand the cold source separately; a liquid drainage port of the low-temperature tank communicates with a first valve, a second valve and a first heat exchange valve through a low-temperature pump separately; the first valve and the third liquid inlet valve communicate with a third valve through the heat tracing device, and the second valve, the third valve and a second liquid inlet valve communicate with liquid inlet ports of the high-temperature tank and the low-temperature tank through the gas-liquid separator separately; a liquid outlet port of the high-temperature tank communicates with thefirst valve, the second valve and a second heat exchange valve through a high-temperature pump separately; and the first heat exchange valve and the second heat exchange valve communicate with inletsof the external heat source and the cold source separately. The high-temperature heat accumulation system is capable of avoiding mixing in heat accumulation liquids with different temperature grades,so that the heat accumulation efficiency is increased.

The invention relates to an underground variable-diameter limiting body blocking and isolating device in a casing, which mainly solves the problems that drilling fluid retention occurs in a water replacing casing in the prior art and the obstructed phenomenon due to delayed measurement of sound change easily occurs. The underground variable-diameter limiting body blocking and isolating device is characterized in that a first-stage pressing cover is in threaded connection with the front end of a center shaft, a first-stage limiting body, a first-stage positioning ring and a height adjustment ring are fixedly connected to the center shaft on the back part of the first-stage pressing cover in sequence, and a first-stage rubber body is sheathed on the outer part of the first-stage limiting body; a second-stage pressing cover is connected to the center shaft on the lower part of the height adjustment ring, and a second-stage limiting body, a second-stage positioning ring and a third-stage positioning ring are fixedly connected to the center shaft on the lower part of the second-stage pressing cover; a second-stage rubber body is sheathed on the outer part of the second-stage limiting body; a four-head trapezoidal fastening screw and a reducing motor are connected in an inner cavity in the back part of the center shaft, and the motor is connected with a controller. By using the underground variable-diameter limiting body blocking and isolating device in the casing, after the well cementing operation is completed, the casing is guaranteed to be filled with clean water, and the obstructed phenomenon due to delayed measurement of sound change is avoided.