139results about How to "Stable temperature field" patented technology

The invention discloses a variable frequency air conditioner low-frequency operating control method. The variable frequency air conditioner low-frequency operating control method comprises the steps that a first frequency value, a second frequency value,..., the Nth frequency value are set between a smallest frequency value and a largest frequency value in low-frequency operating from small to large, N is larger than or equal to two, and the Nth frequency value is larger than the smallest frequency value and is smaller than or equal to the largest frequency value; when a compressor operates below the largest frequency value in low-frequency operating, the compressor operates for more than 2 min under the first frequency value, the second frequency value,..., the Nth frequency and the largest frequency value respectively; the frequency of the compressor in the low-frequency operating period is acquired, and when the compressor operates for 30 min to 35 min continuously with the operating frequency of the compressor below the largest frequency value in low-frequency operating, the compressor operates for 2 min to 3 min for oil return with the frequency rising to the oil return frequency, and then the compressor operates with the frequency reduced to the frequency value before frequency rising. An air conditioner can effectively operate under the low frequency for a long time, the air conditioner can operate in an energy-saving mode, meanwhile, rotating speed control over corresponding inner and outer fans is matched, an air conditioning system can operate stably and safely, and meanwhile a stable temperature field is provided for the interior of a room.

The invention relates to a preparation method of a low heat expansion carbon fiber reinforced resin matrix composite material mold, belonging to the technical field of composite material preparation. The method is capable of forming a molding surface with a VARI (Vacuum Assisted Resin Infusion) technique, and ensuring low heat expansion performance of the mold by controlling the carbon fiber laying direction, precuring temperature, postcuring manner and postprocessing manner of the molding surface. With the adoption of the VARI technique, when a vacuum pressure reaches to 0.1MPa, carbon fiber cloth is compressed by vacuum, so that the product is internally dense after resin is guided in the product, and the volume content of composite material fibers is ensured; and meanwhile, bubbles between carbon fiber cloth layers are removed so as to ensure that the content of internal pores of the composite material is as few as possible and ensure the strength of the composite material.

The invention discloses leadless bone china and a preparation method thereof. The leadless bone china consists of cattle bone coal, pig bone coal, sandstone in Datong, quartz, feldspar, kaolin, calcined kaolin, and bentonite. The preparation method is as follows: leadless bone china is sorted manually, pulverized and processed; b. calcining, ball milling and alkaline cleaning process equipment and process are adopted for the bone coal; c. wet process is adopted for preparing semi-finished china and glaze; d. roll forming process and chain-type dryness are adopted for flat products and products in regular shape; e. high temperature biscuit firing with natural gas and medium and low temperature glaze firing are adopted; f. machine and manual spraying glazing are adopted for glazing; g. a roller hearth furnace is adopted for enamel firing in the environment of natural gases. The leadless bone china is primarily prepared with sandstone in Datong; the molding ratio of the product is as high as 96 percent; the product is transparent, light, fine and hard; the china is harder, whiter and more transparent than the ordinary china.

The invention discloses a rapid detection pVTt methodgas flow standard device and a detection method. The device comprises a standard container, a controller, a heating device, a refrigeration device, an electric fan, and a vacuum pump. The standard container is internally provided with a horizontal air channel from the front end to the rear end. A detected sonic nozzle is connected with the front end of the horizontal air channel through a flow sensor. The rear end of the horizontal air channel is provided with the electric fan. The standard container is connected with the vacuum pump, the heating device, and the refrigeration device. The upper ends of the heating device and the refrigeration device extend into the horizontal air channel. A flow sensor, the heating device, the refrigeration device, the electric fan, and the vacuum pump are connected with the controller. The method comprises: adjusting temperature to keep constant temperature, measuring parameters of the balance states of the standard container before air intake and after air intake, calculating to obtain detected mass flow rate, comparing the detected mass flow rate with theoretical mass flow rate, to obtain a detection result of whether qualified. The device is simple in structure, low in price, high in measuring precision, high in measuring efficiency, and repeatability is better than 0.06%.

The inventio relates to a process of hihg- temperature ionic liquid catalytic biomass through fast thermal cracking and used device. It comprises following steps: feeding biomass particles to impinger through screw feeder, feeding high- temperature ionic liquid into impinger by using high- temperature fused salt pump, the biomass particles is cracked fast under high- temperature ionic liquid action; feeding the cracking gas into cyclone filter and condensing it into biological oil, collecting uncondensed gas and reusing it. The device comprises screw feeder, adjustable speed motorm, high temperature fused pump, impinger, cyclone filter, char collecting device, gas- water exchanger, oil collector, main electric heater, auxiliary electric heater, and high temperature ionic liquid storage tank. The invention is characterized by homogenous mixing of biomass particles with high temperature ionic liquid, stable temperature field, fast biomass thermal cracking, and simple and compact thermal cracking device structure.

The invention discloses a pure-oxygen-atmosphere annealing device and method. According to the method, a material required for being annealed is loaded into quartz tubes, the quartz tubes are placed in an aluminum-oxide ceramic sleeve which is uniformly wound by nickel-chromium wires, oxygen of stable flow is introduced into the quartz tubes, the internal furnace temperature is uniformly and slowly increased, heat of a heater is transferred to crystals to be annealed in a radiation manner, and a temperature control instrument controls a heating-up rate, the degree of a constant temperature, the time for constant temperature and a cooling rate, so that the fully-automatic unattended annealing is realized, and the annealing temperature can reach 1,300 DEG C. The pure-oxygen-atmosphere annealing device and method disclosed by the invention are applicable to the pure-oxygen-atmosphere annealing of materials, such as laser crystals, scintillation crystals and the like, the annealing efficiency is high, and the light emitting efficiency of the laser and scintillation crystals can be increased by 20-40%; after annealing, the brightness, transparency, crystalline perfection and optical uniformity of the crystals can be greatly improved; and the pure-oxygen-atmosphere annealing device has the advantages of stable temperature field, simplicity and reliability, good universality and low energy consumption, so that the annealing cost is reduced.

The invention relates to a silicon carbide crystal and a preparation method thereof, belonging to the field of crystal material preparation. The preparation method of the silicon carbide crystal comprises the following steps of: sublimating the raw materials in the crucible main body, and carrying out gas phase transmission to the surface of a seed crystal through a spiral gas flow channel formedby at least one spiral clapboard component to carry out crystal growth to prepare the silicon carbide crystal. The preparation method of the silicon carbide crystal disclosed by the invention changesthe gas phase transmission mode for preparing the carbonized single crystal by the traditional PVT method, converts the traditional vertical upward transmission into spiral upward transmission, realizes effective blocking of large particle impurities in the crystal growth process, reduces the defect density in the crystal, and improves the crystal quality. The energy consumption is reduced. The application can control the gas phase transmission under vacuum, the single crystal growth rate under vacuum is fast, the growth temperature is low, and the gas phase can be transmitted upwards in an orderly way, the defects of the grown crystals are few, and the cost is reduced and the efficiency is increased.

An amorphous alloy ribbon stretching device combined with a nanoindenter comprises a base, a high-precision turbo-type coarse and fine tuning differential head, fixed columns, a movable baffle, a fixed baffle, a motor, a motor power supply, a gear, a sample holder, clamps and a remote control, wherein the high-precision turbo-type coarse and fine tuning differential head is located between the fixed columns, one end of the high-precision turbo-type coarse and fine tuning differential head is connected with the movable baffle, the fixed baffle is located at one end of the base and is integrally connected with the base, a spring is sandwiched between the movable baffle and the fixed baffle, the sample holder is arranged on the base and located between the movable baffle and the fixed baffle, the clamps are attached to the sample holder, the motor and the motor power supply are fixed on the base, and a drive shaft of a micro motor is connected with the high-precision turbo-type coarse and fine tuning differential head through the gear. The device is used for testing micro-nano rheological mechanical behaviors, and has controllable deformation and strain and high accuracy. The device is particularly suitable for testing micro-nano mechanical behaviors of a film material in different tensile strain states in a tensile strain process.

The invention provides a method for growing thallium bromide monocrystal by spontaneous nucleation, comprising the following steps of: 1) filling a thallium bromide material into a cylindrical ampoule with diameter of 8 to 15mm, vacuumizing, sealing, and processing one end of the ampoule into a cone with the cone angle between 15 and 45 degrees; 2) placing the ampoule into a vertical tube furnace with the conical end towards the bottom of the furnace, heating the vertical tube furnace to enable the temperature of the thallium bromide material in the conical tip not to be lower than the melting point of thallium bromide, raising the temperature from the conical tip upward to the inside of a top area of the thallium bromide material with the temperature gradient between 1.0 and 1.5 DEG C / mm, and then, insulating; 3) reducing the temperature of the tube furnace to between 450 and 460 DEG C at the speed between 1 and 5 DEG C / h; and 4) cooling the ampoule to room temperature along with the furnace. Because a heater and the ampoule are not required to be moved, the invention saves the complicated mechanical transmission device, simplifies the technology and reduces cost. The ampoule and the heater are both fixed, the temperature field is stable, heat inside the crystal and molten mass is uniformly distributed, a convex growth interface can be easily acquired, and the thallium bromide with good integrity and considerable size can be grown.

The invention relates to a method and a device for simulating formation temperature in a multi-element thermal fluid injected oil extraction three-dimensional simulation test. A model body is fixed in a hyperbaric chamber; thermocouples are distributed in the hyperbaric chamber to be connected with a computer; two electric heating coils are positioned on upper and lower inner walls of the hyperbaric chamber and are connected with two upper and lower temperature controllers one outside the hyperbaric chamber; and two circulating fluid coils are positioned on the upper and lower inner walls of the hyperbaric chamber and are connected with two upper and lower refrigerating devices with a compressor and two temperature controllers two, which are positioned outside the hyperbaric chamber, respectively to form two upper and lower enclosed circulation loops. Air ducts are arranged in end covers on two sides of the hyperbaric chamber; two magnetic stirrers are positioned on the end covers on two sides of the hyperbaric chamber; and blades of the magnetic stirrers are arranged in the air ducts of the hyperbaric chamber and pass through the end covers of the hyperbaric chamber to be connected with a motor outside the hyperbaric chamber through a motor shaft. The method and the device have the advantages of compact system structure, uniform and stable simulated temperature field, wide range of the simulated temperature, quick temperature rise / reduction process, and low energy consumption.

The invention relates to an amorphous alloy coating tension device using with a nanoindentor. The amorphous alloy coating tension device comprises a base, a high-precision worm type coarse and fine tuning micrometer head, fixed vertical columns, a movable baffle plate, a fixed baffle plate, an elastic base sheet, a motor, a power source of the motor, and a gear, wherein the high-precision worm type coarse and fine tuning micrometer head is positioned between the fixed vertical columns, and one end of the high-precision worm type coarse and fine tuning micrometer head is connected with the movable baffle plate; the fixed baffle plate is positioned at one end of the base, and is connected with the whole base; the elastic base sheet is clamped between the movable baffle plate and the fixed baffle plate; the motor and the power source of the motor are fixedly arranged on the base; a transmission shaft of the miniature motor is connected with the high-precision worm type coarse and fine tuning micrometer head through a gear. When the amorphous alloy coating tension device is jointly used with the nanoindentor to test the hardness, and the micronanometer rheological mechanics behaviors of viscoelasticity, anelasticity and the like, the continuous tensile deformation of amorphous alloy is realized, the deformation amount and strain are controllable, and the precision is high. The device is especially suitable for testing the micronanometer rheological mechanics behaviors of coating material under different tensile and strain states in the tensile and deformation process.

The invention discloses a preparation method for a large-area lead iodide thick film and implementation equipment thereof. According to the invention, in a vacuum cavity of the equipment, the raw material high purity lead iodide powder is spread on a raw material carrier graphite sheet, which is placed on a flat heater, a directional heat dissipation plate equipped with a substrate at the bottom is supported by a quartz block over the raw material, in an environment with a vacuum degree of 10<-1>Pa-10<-5>Pa, starting the flat heater to heat the raw material to gasify it, and the raw material gas condenses and deposits at the low temperature substrate, thus forming the dense lead iodide polycrystal film. With the method and equipment provided by the invention, the lead iodide polycrystal thick film with a thickness of 50-1000 micrometers, an area of 5*5cm<2>-50*50cm<2>, uniform thickness and excellent properties can be prepared on the substrate. Also, the preparation process is simple and low in cost, thus being suitable for industrial mass production.

The invention discloses a full-scale performance detection and evaluation device for a SCR denitration catalyst and an application method thereof, and belongs to the field of detection. The full-scaleperformance detection and evaluation device comprises an air distribution system, a main reaction system, an analyzing system, a spraying system and a data collecting and control system which is usedfor achieving parameter setting and automated operation of control elements, wherein the main reaction system comprises a heat exchanger, an electric heater and a reactor system which are sequentially connected. The reactor system comprises a plurality of reaction furnaces, and the reaction furnaces are connected mutually. In the situation of without stopping the furnaces, the full-scale performance detection and evaluation device can continuously measure the performance of the catalyst under four working situations, the energy is saved to the largest extent, the working efficiency is improved, and the parameters such as denitration efficiency, ammonia escape, SO2 / SO3 conversion rate and pressure drop can be effectively measured.

The invention provides a purification device for high-purity indium. The purification device comprises a quartz tube, a plurality of resistance heaters and a guide rail. Two ends of the quartz tube are fixed along the horizontal directions by the aid of a left flange sleeve and a right flange sleeve, and a graphite boat is arranged in the quartz tube; the resistance heaters are arranged on the outer side of the quartz tube and are sequentially arranged along the horizontal directions of the quartz tube, and cooling devices are arranged between the adjacent resistance heaters; the resistance heaters are fixed by the aid of the guide rail, and the guide rail is provided with a left stopper, a slide wire groove and a right stopper. Compared with the prior art, the purification device for thehigh-purity indium has the advantages that the resistance heaters are sequentially arranged on the outer side of the quartz tube along the horizontal directions, and accordingly zone melting and directional solidification can be simultaneously implemented; the temperatures of the resistance heaters are controlled, multistage heating can be implemented, uniform heating temperature gradient distribution and stable temperature fields can be guaranteed, accordingly, integral purification procedures are high in efficiency, and 6N-7N ultrahigh-purity indium production requirements can be met.

The invention relates to a magnesium alloy wide plate casting-rolling machine, which is used for directly casting and rolling liquid magnesium alloy into a wide cast-rolled plate blank with the width of 800 to 1,800 millimeters. The casting-rolling machine is characterized in that the casting-rolling machine is a three-roll casting-rolling machine, has a pair of equal diameter double-drive rolls with the diameter of 800 to 1,200 millimeters and the same turning directions, namely an upper driving roll 1 and a lower driving roll 3, and has a driven roll 2 with the diameter of 200 to 600 millimeters, wherein the lower driving roll 3 and the driven roll 2 form a casting-rolling roll pair which has an internal water-cooled structure, the upper driving roll 1 is a supporting roll for the driven roll 2, and the plane of the axes of the three rolls is inclined towards one side of a casting nozzle; and the inclination angle is 0 to 15 degrees. The unequal diameter casting-rolling working rolls of the inclined three-roll casting-rolling machine have the advantages of a two-roll casting-rolling machine and a four-roll casting-rolling machine, can overcome the defects of the two-roll casting-rolling machine and the four-roll casting-rolling machine, and have the characteristics of high solidifying and cooling speed, high rolling pressure and good plate shape control. The three-roll casting-rolling machine casts and rolls the liquid magnesium alloy into a cast-rolled plate belt with the width of 800 to 1,800 millimeters and with large width, small deformation amount and good plate shape.

The invention discloses an automatic adjustment control device for a mold temperature field, which solves the problem that the conventional thermocouple can conduct point measurement and cannot comprehensively measure the distribution of mold temperatures by acquiring temperature field information of a mold through an infrared shooting mode. The automatic adjustment and control device can perform continuous process control on the mold and adjust the temperature field of the mold in real time so as to ensure the stability of the temperature field of the mold in production.

A process for thermocracking the biologic mass with low energy consumption includes continuously feeding the biologic mass into fluidized-bed reactor, gasifying, separating carbon particles from gas,collecting carbon particles, cooling the gas by gas-gas heat exchange, cooling the gas to 40 deg.C further by gas-water heat exchanger to obtain condensed oil, and heating the residual gas for circulation. Its equipment is composed of feeder, fluidized-bed reactor, cyclone separator, gas-gas heat exchanger, gas-water heat exchanger, oil collector, circulating blower, and electric heater.

The incinerator for medical garbage includes a vertical cylindrical furnace body, a top material feeder and reciprocating material hoister. The furnace body consists of a central main combustor and a ring secondary combustor in the integral structure with the main combustor, and the main combustor is provided with turnable grate and tower type crusher. The fume from the main combustor to the secondary combustor is then post-treated before exhaust to atmosphere, the combustion supporting air is divided into through paths before entering to the main combustor, and the large material and un-burnt fume are burnt for the second time in the secondary combustor. The present invention utilizes the heat of the incinerated matter fully, raised temperature of the secondary combustor, and low running cost.

The invention provides an arc jet nozzle for producing an amorphous thin belt. The middle of the arc jet nozzle is transversely hollowed out to form a cavity. One or more reinforcing ribs are reserved at the hollowed-out position. The edges, close to the four stand sides of the arc jet nozzle, of the cavity are all in convex arc streamline shapes. A jet seam is reserved below the cavity. According to the arc jet nozzle for producing the amorphous thin belt, the internal structure of a jet nozzle in the prior art is optimized, the amount of liquid steel inside the jet nozzle is small, the temperature field is stable, no eddy and no dead zone exist, the belt material yield is high, and the belt material production efficiency is improved.

The invention discloses a magnesium alloy wide plate three-roll casting-rolling mill. The casting-rolling mill has the advantages of the two-roll casting-rolling mill and the four-roll casting-rolling mill, overcomes the defects thereof and is characterized by fast solidifying speed and cooling speed, high rolling pressure and good plate shape control. The three-roll casting-rolling mill can be used to cast and roll liquid magnesium alloy to casting-rolling strips with 800mm-1800mm of width, large deformation and good plate shape; and the main body of the casting-rolling mill is designed to be a reducing three-roll casting-rolling mill. By using the three-roll casting-rolling mill, the technological parameter indexes, such as stable liquid stream, uniform current distribution, stable temperature field, large unit rolling pressure and good plate shape, of the casting and rolling requirements of the magnesium alloy wide sheet are easy to realize.

The invention relates to a heating device for hydride vapor phase epitaxy (HVPE) growth. The heating device comprises five heating temperature regions, an in-furnace heating module, a heating furnace body and a heating furnace shell, wherein the heating furnace body is divided into an auxiliary heating temperature region and a material growing heating constant-temperature region; each heating temperature region is provided with a plurality of heating modules and internal temperature sensors thereof. With the adoption of the heating device, each heating module and an internal temperature sensor thereof are respectively connected with an automatic temperature controlling circuit, heating power of each heating module is reasonably regulated by the automatic temperature controlling circuit, and combined with a type and a heating mode of each heating module set in the each heating temperature region, temperature of each temperature region is independently and precisely controlled in a preset temperature range, thus realizing uniform and stable temperature distribution in an in-furnace temperature field. The heating device is particularly suitable for growth of materials in large-area region.

This invention relates to a method for preparing heterovalent ions-doped high-luminescence-yield lead tungstate crystal and its preparation method. The high-luminescence-yield lead tungstate crystal is doped with F- 100-8000 ppm, Sb3+ 100-5000 ppm, and Mo6+, V5+, Nb5+, Zr4+, and Ti4+ 0-10000 ppm, and is prepared via modified Bridgman method by using platinum crucible. The method can be used for preparing several strands of lead tungstate crystals in one process, and is suitable for mass production. The obtained heterovalent ions-doped high-luminescence-yield lead tungstate crystal has such advantages as rapid attenuation and high luminescence yield.

The invention belongs to the metering technology field, and concretely relates to a method for temperature calibration by means of a benzoic acid freezing point temperature level ground. The invention also relates to a device adopted by the above method. The method includes the steps of making a benzoic acid freezing point bottle and conducting temperature calibration. The device comprises a benzoic acid freezing point bottle and a benzoic acid freezing point reproduction storage device. The benzoic acid freezing point bottle and the benzoic acid freezing point reproduction storage device are combined together at about 122 DEG C to conduct temperature calibration by means of a benzoic acid freezing point temperature level ground. The beneficial effects of the invention are: firstly, the calibration accuracy is high, and secondly, good reliability is achieved. The method and the device are of practical significance in tracing a specific key temperature spot.

The invention provides a reaction device and a system and a method for synthesizing acetic acid from carbonyl. The reaction device comprises a reaction kettle, a circulating fluid stirring part and a raw material gas distribution stirring part. The gas distribution stirring part comprises more than two gas distribution stirring units, and the more than two gas distribution stirring units are distributed in multiple layers along the central shaft of the reaction kettle and are communicated. A circulating fluid feeding pipe penetrates through a circulating fluid inlet and is communicated with a circulating fluid outlet. A raw material gas feeding pipe penetrates through a raw material gas inlet and is communicated with the gas distribution stirring part. When the reaction device is used for synthesis of acetic acid from carbonyl, a shaft seal and a bottom fixed bearing are prevented from being easily damaged in the operation process during mechanical stirring, there is no movable sealing point, and safe and stable operation of a reaction system is guaranteed. Meanwhile, the more than two gas distribution stirring units which are distributed in multiple layers and are sequentially communicated enable gas in the reaction kettle to be distributed more uniformly, the gas-liquid two-phase mixing effect is improved, the reaction state in the system is optimized, the temperature difference in the reaction kettle is reduced, and side reactions are reduced.

The invention relates to a graphite electronic heat radiation material as well as a preparation method and application of the graphite electronic heat radiation material. The preparation method comprises the following steps that 1) expandable graphite is sent into pulses in a high-temperature furnace and a high-frequency electric induction field to be expanded into graphite worms; 2) the graphite worms are subjected to solid-gas separation; 3) the graphite worms directly pass through carbon nanometer tubes or are added into the carbon nanometer tubes after being cooled, then, the graphite worms pass through a conveying belt, electrodes are arranged under the conveying belt, calendar rollers are arranged above the conveying belt, and the pure graphite worms subjected to primary compression or the graphite worms containing the carbon nanometer tubes are obtained; and 4) the graphite worms are pressed into flexible graphite films, plates or coiled materials in a molding pressing or multi-section rolling modes. The graphite electronic heat radiation material has the beneficial effects that 1) the expansion is very sufficient, and substances inserted into positions between layers are basically volatilized at all; 2) the energy is saved, the emission is reduced, and the fuel gas heat source realizes the carbon-free discharge; 3) the heat conductivity index of products is improved; and 4) the vertical surface heat conductivity can reach 10 to 30w / (m.l), and the parallel surface heat conductivity can reach a value higher than 300 to 900w / (m.k).

The invention provides a heat-recovery thermostatic bath circulating device. The heat-recovery thermostatic bath circulating device is provided with an output end and an input end which are respectively connected with a user side and is characterized by comprising a cold solution box, a hot solution box, a constant-temperature solution box and a compressor, wherein the cold solution box is provided with a refrigerating coil pipe I and a temperature sensor I; the hot solution box is provided with a heating coil pipe and a temperature sensor II; the constant-temperature solution box is provided with a heating device and a temperature sensor III; the compressor, the heating coil pipe and the refrigerating coil pipe I are sequentially communicated with one another to form a refrigerant circulating loop I; the cold solution box and the hot solution box are communicated with the constant-temperature solution box through a fluid adjusting device I and a fluid adjusting device II, respectively. The heat-recovery thermostatic bath circulating device recovers condensation heat generated in the refrigerating process and utilizes the recovered condensation heat to adjust the temperature of a working solution of the device, so that the integral efficiency of the device can be improved. The invention also provides a constant temperature method of the heat-recovery thermostatic bath circulating device. The constant temperature method can be used for recovering condensation heat and has the advantages that the temperature control precision is high, the solution temperature is uniform, and the control response speed is high.

The invention discloses an adjustable inner-cooling type falling film absorption experimental device. The adjustable inner-cooling type falling film absorption experimental device is composed of an upper end cover, a lower end cover, a cylinder body and a falling film implement. The upper end cover, the lower end cover and the cylinder body are all in bolt connection to form an absorption bin. The falling film implement is placed in the absorption bin. The falling film implement is composed of a liquid overflow groove, a support, a liquid absorption layer, a falling film plate, adjusting rods, a water collecting pipe, a water distributing pipe, capillary tubes and a gradienter. According to the experimental device, the falling film implement can be horizontally adjusted through the thread connection of the four corners of the support, and the inclination, caused by installation or an uneven bottom contact surface, of the falling film implement is avoided; the uniformity of a liquid film in the falling film absorption process is ensured by arranging the gradienter to monitor whether the falling film plate is horizontal; a stable temperature field in the falling film absorption process is ensured by welding a same-course type cooling water pipeline on the lower surface of the falling film plate; the stability of liquid flow and the uniformity of the liquid film are ensured by bonding the liquid absorption layer with the upper surface of the falling film plate.

The invention provides a catalyst carrier with a three-dimensional mesh inert skeleton structure and a preparation method of the catalyst carrier. The carrier comprises a three-dimensional mesh (dense) ceramic skeleton with densely distributed large-pore-diameter pore channels, and large pore diameters of the three-dimensional mesh ceramic skeleton are filled with porous catalytic materials; and the size of the large pore diameters is greater than 50 nm, and the size of porous pore diameters is 0.3-20 nm. The catalyst carrier with the three-dimensional mesh inert skeleton structure and the preparation method of the catalyst carrier have the advantage that the morphology structures and physico-chemical properties of the catalyst are effectively adjusted and controller to improve catalytic performance.

The invention provides a sapphire crystal growth furnace, which comprises an annular inner heater and an outer heater and a plurality of crucibles uniformly arranged between the inner heater and the outer heater, and a cooling device is provided at the bottom of the crucible, so that The power of the inner heater and the outer heater is controllable. A sapphire crystal growth furnace provided by the present invention adopts two kinds of ring-shaped tungsten heaters with different diameters. The tungsten crucible is placed between the two ring-shaped heaters, and the tungsten crucible is evenly and symmetrically distributed. A cooling device is installed at the bottom of each crucible. By controlling The power of the heater and the flow rate and temperature of the cooling medium form a stable temperature field and thermal field, thereby greatly improving the utilization rate of sapphire crystal growth materials and the crystallization rate of large-sized crystals, and reducing production costs.

The invention discloses a solid fuel combustion device with a fire grate obliquely arranged. The solid fuel combustion device comprises a furnace body, wherein an upper air inlet is formed in the upper portion or the top of the furnace body, a lower air inlet is formed in the lower portion of the furnace body, and a furnace chamber is formed in the furnace body; a fire outlet is formed in the side of the furnace body, the fire gate is obliquely arranged in the furnace chamber, the upper air inlet and the fire outlet are located in one side of the fire gate, and correspondingly the lower air inlet is located in the other side of the fire gate; the space, located on the fire gate, in the furnace chamber is a solid fuel containing cavity which is divided into a combustion preparing area and a combustion area from top to bottom, the height of the combustion preparing area is larger than 150 mm, the ratio of the largest breadth width of the fire gate to the height of the fire outlet is not larger than 1.5, and the height difference of the solid fuel containing cavity and the fire outlet is not smaller than 150 mm. The invention further discloses a solid fuel clean combustion method. Due to the device and the method, the clean combustion process of solid fuel can be achieved.