67results about How to "To achieve the purpose of warming up" patented technology

The invention provides a selective laser melting forming device of a medical magnesium alloy metal part, which comprises a control device, a powder delivering and spreading device, a laser transmission mechanism, an air purification device and a closed forming chamber, wherein the powder delivering and spreading device comprises a hopper and powder spreading brushes arranged on two sides below the hopper, the upper part of the hopper is arranged in a way of corresponding to a feeding opening on the upper part of the forming chamber, and the lower parts of the powder spreading brushes horizontally correspond to the upper surface of a forming cylinder; the laser transmission mechanism is arranged outside and above the forming chamber and is arranged in a way of corresponding to the forming cylinder; the side wall of the forming chamber is provided with an air inlet and an air outlet, and the air purification device is connected with the air inlet and the air outlet respectively; and the control device is connected with the powder delivering and spreading device, the laser transmission mechanism, the forming cylinder and the air purification device respectively. The invention also provides a selective laser melting forming method of the medical magnesium alloy metal part. The device and the method can manufacture parts which have complex shapes required in the medical field directly, and have the advantages of high forming efficiency and the like.

The invention discloses a micro-combustor, which comprises a bluff body, two preheating channels and a combustion chamber, wherein the preheating channels and the combustion chamber are all plate-shaped; the cross section of the bluff body is triangular or circular; the bluff body is arranged at an inlet of the combustion chamber; the ratio of the width of the bluff body to the width of the combustion chamber is 0.3-0.6; the two preheating channels are both L-shaped and are respectively arranged at upper and lower sides of the combustion chamber; and outlets of the preheating channels are both communicated with the inlet of the combustion chamber. By using the micro-combustor, the defect of the prior art is overcome. By preheating and catalyzing fuels and air (when a non-pre-mixing combustion mode is adopted) or the pre-mixture of the fuels and air (when a pre-mixing combustion mode is adopted), the energy used for igniting is lowered, the igniting delay time is shortened and the exhaust heat loss is reduced. Besides, a low-speed high-temperature recirculation region formed behind the bluff body is utilized to fully mix the fuels and air, prolong the gas retention time and stabilize the flame. The micro-combustor can be used for efficiently expanding the stable combustion limit and increasing the combustion efficiency and can be widely applied to various micro-power systems.

The invention is concerned with stabilized frequency method and equipment of double longitudinal modes laser based on thermoelectric cooler. The stabilized frequency method is piezoelectric ceramics, and so on. Detect the circumstance temperature T0 of laser to confirm heat balance temperature Tset, start electrical source of laser to test current temperature Treal of laser tube at real time. Adjust countercurrent I according to different value between current temperature Treal and heat balance temperature Tset and heat up laser tube to keep temperature arrive to Tset. Detect optical power Pm and Pm+1of m order and m+1order on the mutual vertical polarization direction to laser and count the different valueDeltP of the two powers. When the temperature of laser tube is near to heat balance temperature Tset, afford forward or counter current to thermoelectric cooler according to the forward or counter to the different valueDeltP, keep the symmetry of two longitudinal mode laser frequency and make the different valueDeltP close to zero, by controlling the temperature of laser tube, the length of resonant cavity and laser longitudinal mode frequency. The two longitudinal mode frequencies are steady, and this product is fit for stabilized frequency.

The invention relates to an energy-saving stove preheating premixed combustible gas by using after heat. The stove comprise a stove plate, a burner and a mixing chamber, wherein the burner is arrange in the middle of the bottom of the stove plate, and the burner is communicated with the mixing chamber; the stove also comprises a fume guide hood for guiding fume after heat in the stove plate to the outer wall of the mixing chamber to preheat the premixed combustible gas in the mixing chamber; a flanged edge contacting with a cooker is arranged at the border of the stove plate; the fume guide hood is communicated with the bottom of the stove plate, and is sleeved outside the mixing chamber; the fume guide hood is in sealed connection with the outer wall of the mixing chamber at the bottom; the fume guide hood is provided with an after heat discharge outlet; and the stove plate is internally provided with cellular porous ceramic which is obliquely erected through an energy gathering plate bracket. According to the energy-saving stove provided by the invention, the traditional fume emission notch at the upper part of the stove plate is omitted, direct discharge of fume whose after heat is not utilized is reduced; and through arranging the mixing chamber in the fume guide hood, a preheating device and the stove form a whole body, and the purpose of preheating the premixed combustible gas delivered into the stove can be achieved without need of splitting for independent use.

The invention discloses a heating method and a heating system for a permanent magnet servo motor. The heating method comprises the following steps: the step S1, detecting temperature of the permanent magnet servo motor; the step S2, judging a range of the temperature; the step S3, cutting down a power supply of the permanent magnet servo motor and returning to the step S1; the step S4, arranging the electric zero position of the permanent magnet servo motor as 90 degrees and turning on the power supply of the permanent magnet servo motor to heat the permanent magnet servo motor; and the step S5, arranging the electric zero position of the permanent magnet servo motor as 0 degree and turning on the power supply of the permanent magnet servo motor to enable the permanent magnet servo motor to work normally. The heating method enables the motor to be preheated under the situation when the torsion output of the motor is zero and the motor doesn't rotate. After a bearing and a bearing bush are evenly heated, the motor can normally work to prevent the motor bearing from being damaged.

The invention provides a baking device. The device comprises a smoke pan (1) and an air inlet structure (2) at one end of the smoke pan (1), wherein the air inlet structure (2) comprises an air inlet passage (23), the smoke pan (1) comprises a smoke cavity (11) and an air inlet hole (12) for communicating the smoke cavity (11) and the air inlet channel (23). The baking device further comprises a heating device (3), wherein the heating device (3) is used for heating the air inlet passage (23) and the smoke pan (1). Through the adoption of the baking device provided by the invention, the heating device (3) capable of heating the air inlet passage is additionally arranged, the entered air can be pre-heated while passing through the air inlet passage (23) as long as the air passes through the air inlet passage (23), and then then air enters the smoke pan (1). Therefore, the baking device has the function of preheating the induced air, and is capable of improving the mouthfeel of the cured tobacco when being used for baking the electronic cigarette.

The invention aims to provide an active control type fully-immersed liquid-cooled power battery thermal management system. A compressor, a condenser, a refrigeration electromagnetic valve, an expansion valve and an evaporator are connected in series to form a compressor unit main refrigeration unit; a manual valve and a liquid spraying electromagnetic valve are led out from a pipeline in front of the refrigeration electromagnetic valve to form a spraying branch; a thermal manual valve and a thermal electromagnetic valve are led out from a pipeline between the compressor and the condenser to the evaporator to form a thermal bypass branch; and a first three-way reversing valve and a second three-way reversing valve are connected with a plate heat exchanger and the evaporator and are connected in parallel to form a plate heat exchanger auxiliary cooling unit, the first three-way reversing valve is connected with a drying filter and the manual valve to a cooling liquid tank, and the second three-way reversing valve is connected with an electronic circulating pump, a temperature sensor and a flow sensor to the cooling liquid tank. The direct contact type fully-immersed liquid-cooled mode is adopted, the heat loss in the heat exchange process of the whole heat management system can be greatly reduced and improved, the heat exchange resistance of the system is reduced, and the heat exchange efficiency is improved.

The invention discloses a method for increasing the endpoint carbon content of the converter. The method comprises the following steps: adding steel scraps in the molten iron of a converter, then adding slag while controlling the initial basicity of slag to 2.5-3 and controlling the heating speed of the process; supplying oxygen, converting to control the phosphorus content of molten iron to lessthan 0.025%; and performing catch carbon while controlling the catch carbon temperature to 1620-1660 DEG C, controlling the carbon content of molten iron to 0.2%-0.4% and controlling the adding time of all the auxiliary materials to be less than 3min, wherein when a dephosphorization oxygen lance is used to supply oxygen, and the dephosphorization oxygen lance is 1.2m-1.6m above the liquid level of a molten bath in the converter during the preset time before catch carbon. The method of the invention adopts an compact production organization model, thus the number of reblowings can be reduced and the heat of the converter can be effectively utilized.

The invention provides a fresh air exchange device, an air-conditioner and an air-conditioner control method. The fresh air exchange device comprises a shell, a fresh air draught fan, a fresh air pipe, an air inlet pipe and an air return pipe, wherein an installing cavity is defined by the shell, the fresh air draught fan is installed in the installing cavity and is provided with an air inlet andan air outlet, the first end of the fresh air pipe communicates with the air inlet, the second end of the fresh air extends to the exterior of the shell, the first end of the air inlet pipe communicates with the air outlet, the second end of the air inlet pipe extends to the exterior of the shell, the air return pipe is installed in the installing cavity, the first end of the air return pipe communicates with the fresh air pipe, the first end of the air outlet pipe is located in the installing cavity, and the second end of the air outlet pipe extends to the exterior of the shell. By means of the fresh air exchange device, the air-conditioner and the air-conditioner control method, power dissipation of the air-conditioner can be reduced while fresh air exchange is carried out, and the influences on the indoor environment temperature are small.

The invention discloses a high-temperature flue gas heat recovery preheating type oxygen lance for an electric arc furnace and an application method thereof. The preheating type oxygen lance comprisesa heat conduction oil preheating device and a cooling water preheating device; the heat conduction oil preheating device comprises a heat conduction oil heating loop and a heat conduction oil preheating loop, wherein one part of the heat conduction oil heating loop extends into a flue gas pipeline of the electric arc furnace, the heat conduction oil preheating loop is connected with the heat conduction oil heating loop in a heat transferring mode, and one part of the heat conduction oil preheating loop extends into the oxygen lance; and the cooling water preheating device comprises a third heat conduction oil pool, a cooling water preheating loop, a freezing water loop and a lithium bromide absorption type refrigerating unit, wherein an oil inlet pipe and an oil outlet pipe of the third heat conduction oil pool both communicate with the heat conduction oil heating loop, one part of the cooling water preheating loop extends into the oxygen lance, the lithium bromide absorption type refrigerating unit is connected with the third heat conduction oil pool through second heat pipes, and the cooling water preheating loop and the freezing water loop are both connected with the lithium bromide absorption type refrigerating unit. The preheating type oxygen lance can preheat oxygen by utilizing flue gas waste heat, and hot water and freezing water can be obtained.

The invention provides a rare earth waste roasting uniform feeding device. The device comprises a feeding box, a feeding port is formed in the top of the feeding box, a smashing cavity is formed in the bottom of the feeding port, a filtering cavity is formed in the bottom of the smashing cavity, a stirring cavity is formed in the bottom of the filtering cavity, a discharging port is formed in thebottom of the stirring cavity, an adjusting table is clamped in the discharging port, a motor groove is formed in one side of the smashing cavity, and a mounting groove is formed in the other side ofthe smashing cavity. Rare earth waste can be smashed through the smashing cavity, when the smashed rare earth waste enters the filtering cavity, a screening net can be driven by a rotating motor to vibrate, accordingly, the rare earth waste is screened, and the screened rare earth waste enters the stirring cavity to be stirred and heated, so that the rare earth waste can be preheated, the workingefficiency of waste roasting is improved, when the rare earth waste passes through the discharging port, the adjusting table can adjust the discharging speed of the rare earth waste, and therefore thesituation that the rare earth waste is accumulated is prevented.

The invention aims to provide an integrated power battery thermal management system with cooling and fire extinguishing functions. A compressor, a condenser, a dry filter, a refrigeration electromagnetic valve, a capillary tube and an evaporator are sequentially connected to form a compressor unit refrigeration unit; a manual valve and a liquid spraying electromagnetic valve are led out from the front of the refrigerating electromagnetic valve to form a spraying branch; a manual valve and a thermal electromagnetic valve are led out from a pipeline between the compressor and the condenser to form a thermal bypass branch; a first three-way connecting valve, a water absorption filter and a regulating valve are connected to a liquid outlet of a liquid cooling plate in the battery liquid tank to form a liquid cooling branch, and the second three-way connecting valve, the water absorption filter and the liquid return electromagnetic valve are connected to a liquid return port of the sealed battery liquid tank to form a liquid fire extinguishing branch; the circulating pump, the temperature sensor, the flow sensor, the flow regulating valve, the diaphragm valve and the heater are sequentially connected to form a liquid cooling circulating unit. Cooling and fire extinguishing functions are integrated, the space utilization rate of the system can be increased, and the safety performance of the whole thermal management system is enhanced.

The invention discloses a method for manufacturing silicon and carbon composite balls through waste mortar generated during silicon slice cutting. According to the method, firstly, the waste mortar generated in the silicon slice cutting process is recycled, polyethylene glycol is extracted for use, the residual mortar containing silicon carbide and silica powder is made into filter cakes to be air-dried till the water content is smaller than 10%, then the filter cakes are broken into granules with the grain size smaller than 3 mm, and the total content of silicon is confirmed through chemical analysis and then the granules are classified and stored for use; a bonding agent and a wetting agent are weighed and mixed with the granules to be made into blanks with the grain size smaller than 50 mm, the blanks are put into a furnace to be baked till the water content of the blanks is smaller than 2%, then the blanks are cooled and taken out from the furnace, and the silicon and carbon composite balls are obtained, wherein the physicochemical indexes stratify the conditions of TSi=30%-70%, Tc=10%-25%, S<=0.1% and H2O <=2%. The manufacturing process is simple, recourses contained in by-product-waste mortar generated in the silicon slice cutting and machining processes are used comprehensively, environmental pollution is reduced greatly, and great economic benefits and social benefits are generated.

The invention provides a drinking water device capable of providing different water temperatures. The drinking water device comprises a boiling water valve, a warm boiled water valve, a heater and an energy converter, wherein one end of the boiling water valve and one end of the energy converter are both connected with the water outlet end of the heater; the energy converter is an S-shaped double-layer pipeline; one end of an inner pipe of the energy converter is communicated with the water outlet end of the heater; the other end of the inner pipe of the energy converter is communicated with the warm boiled water valve; one end of an outer pipe of the energy converter is communicated with the water inlet end of the heater; the other end of the outer pipe of the energy converter is communicated with a water source end. The drinking water device provided by the invention is simple in structure and convenient to operate; compared with a previous heater, not only is the warm boiled water valve added on the basis of an original hot water pipeline, but also the purposes of cooling boiling water and preheating cold water are realized through an exchange action of a heat exchange pipeline.

The invention relates to a rice noodle preparation method of a household rice noodle machine and the household rice noodle machine. The rice noodles preparation method of the household rice noodle machine comprises the following steps: a feeding stage, namely driving a screw rod to rotate by a drive system and feeding raw materials into an extrusion grinding cavity by the screw rod; a curing and noodle-extruding stage, namely driving the screw rod to rotate by the drive system, grinding the raw materials by the screw rod, mixing, simultaneously curing the raw materials, and extruding into rice noodles from the ground, crushed, mixed and cured raw materials through a molding die head; and a once warming process, namely heating a extrusion crushing cavity by a heating device before the curing and noodle-extruding stage, so that the temperature of the extrusion crushing cavity ascends to T1, and the range of T1 is 80-110 DEG C, and feeding the rice material into the extrusion grinding cavity for curing after the once warming process is additionally added in the rice noodle preparation process, so that the hardness of the rice material is reduced, and the crushing of the rice material by virtue of a crushing, extruding and molding system in the curing and noodle-extruding stage is facilitated, and forming of the rice noodles are facilitated.

The invention discloses an aquaculture water area temperature increasing and oxygenating device which comprises a water pump. The water pump is connected with a temperature increasing device which comprises a cylinder water storage box. A cylinder rotor is arranged in the cylinder water storage box. Column holes are formed in the side face of the cylinder rotor. The axis of each column hole is perpendicular to the axis of the cylinder rotor. A water inlet and an air inlet are formed in the side face of the bottom of the cylinder water storage box. The water inlet is connected with the water pump. The air inlet is connected with an air pump. A water outlet is formed in the side face of the top of the cylinder water storage box. A motor is connected to the cylinder rotor. According to the technical scheme, the aquaculture water area temperature increasing and oxygenating device is compact in structure, easy to operate and capable of increasing water temperature of an aquaculture water area fast and increasing the oxygen content of water in the water area; time for culturing freshwater shrimps is prolonged to a certain degree, the culture yield is increased, and requirements of people for the daily freshwater shrimps are met.

The invention discloses a methane vapor reforming unit, comprising a reforming heat exchange apparatus, a methane conveyer pipe and a vapor conveyer pipe, and a preheating chamber. The reforming heat-exchange apparatus comprises a reforming chamber and a high temperature channel. The methane conveyer pipe and the vapor conveyer pipe are communicated with the reforming chamber and pass through the preheating chamber. The high temperature channel passes through the reforming chamber. The methane vapor reforming unit also has a preheating chamber. The preheating chamber can preheat the methane and the vapor needed for the reforming, thereby shortening the time of heating the methane and the vapor in the reforming chamber and enabling the methane and the vapor in the methane vapor reforming unit to have relatively higher reforming efficiency.

The invention discloses a method for extracting aluminum oxide by quickly heating fly ash, which comprises the following steps: 1. grinding and activating fly ash, and meanwhile, grinding ammonium sulfate, 2. carrying out solid-solid uniform mixing on the ground fly ash and ammonium sulfate according to the mol ratio of Al2O3 in the fly ash to (NH4)2SO4 of 1:(3-6); 3. adding a small amount of water into the mixed raw materials, and granulating; 4. roasting the granules formed in the step 3 in a high-frequency or microwave device; 5. dissolving the roasted clinker in water to obtain a solution; 6. filtering the solution formed in the step 5, and separating the filtrate and filter residues; 7. adding ammonia water into the filtrate in the step 6 to obtain an Al(OH)3 precipitate; and 8. calcining the Al(OH)3 precipitate to obtain the Al2O3 product. The high-frequency and microwave heating principle is as follows: an electromagnetic field repeatedly polarizes polar molecules contained in the substance, and the polar molecules vigorously move under the action of the alternating electromagnetic field to generate mutual friction and heat, thereby achieving the goal of heating the material.

The invention discloses a heating device for a laboratory. The heating device comprises a machine base, wherein a reciprocation mechanism, a sliding rail, a guiding rail and a pipeline are arranged onthe machine base; the inner part of the sliding rail is connected with a sliding plate in a sliding manner; the inner part of the guiding rail is connected with an air inlet pipe in a sliding manner;a heating passage and a cooling passage are arranged on the air inlet pipe; processing pipes are symmetrically arranged on an inner wall of the pipeline, and elastic thin sheets are arranged in the processing pipes; a pre-heating pipe is arranged between the two processing pipes; a hollow iron ball is arranged in the pipeline; a first heating passage is arranged in the center of the iron ball; the inner part of the first heating passage is connected with a hollow ball body in a sliding manner; an air hole is formed in the ball body; a plurality of second heating passages are symmetrically arranged in a heating ball; a heating electric wire is arranged on an inner wall of the pipeline; an air outlet pipe is also arranged in the pipeline; the inner part of the air outlet pipe is connected with a threaded column; an air outlet is formed in a side wall of the air outlet pipe; a sealing block is arranged on the pipeline; and a collection pipe is arranged on a side wall of the pipeline. According to the scheme disclosed by the invention, the problem of a poor heating effect of current gas heating equipment is mainly solved.

The invention relates to an automobile rearview mirror with a demisting function. The automobile rearview mirror comprises a frame, a baffle, a first moving groove, a second moving groove, a bristle brush plate and a fixed frame, a lens is fixedly arranged on the inner side of the frame, fixing bases are arranged on the two sides of the upper end of the frame, a rotating shaft is fixed between thefixing bases, meanwhile, a torsion spring is wound around the rotating shaft, contact angles are installed on the two sides of the baffle and sleeve the rotating shaft, torsion springs are wound around the contact angles, the first moving groove and the second moving groove are fixedly distributed in the left side and the right side of the frame respectively, sliding grooves are formed in the left side and the right side inside the first moving groove and in the left side and the right side inside the second moving groove respectively, pulleys are fixedly arranged inside the sliding grooves,a button is arranged on the diagonal upper portion and connected with a heating wire, and a handle is installed on the lower right of the frame. The automobile rearview mirror with the demisting function has the functions of rain prevention and dust prevention, meanwhile, can realize the aim of demisting, and meets using requirements.

The invention relates to an internal heating type acupuncture and moxibustion needle with a temperature measurement function and a temperature-measuring and heating device and belongs to the field of internal heating type acupuncture and moxibustion treatment equipment. The internal heating type acupuncture and moxibustion needle comprises a needle handle (2) and a needle body (3), and is characterized in that the needle handle (2) and the needle body (3) are hollow internally and are communicated with each other, a plugging end (1) is arranged at an opening position of one end of the needle handle (2), a temperature-measuring and heating mechanism is arranged inside the needle handle (2) and the needle body (3), one end of the temperature-measuring and heating mechanism is connected with the plugging end (1) while the other end of the temperature-measuring and heating mechanism is connected with the inner surface of the needle handle (2) or the needle body (3), and a temperature-measuring electrode is arranged on the outer surface of the needle handle (2) and / or the needle body (3). The internal heating type acupuncture and moxibustion needle has the advantages that since the temperature-measuring and heating mechanism is arranged inside the needle handle and the needle body to enable a temperature-measuring and heating wire to produce heat, temperature rise of the needle body is achieved; the plugging end is arranged at one end of the needle handle, and another electrode which is arranged on the outer surface of the needle body serves as the temperature-measuring electrode, so that temperature detection and control of the needle body can be achieved by the aid of the plugging end and the temperature-measuring electrode.

The invention discloses a strawberry seedling raising device. The strawberry seedling raising device comprises a bottom plate, wherein a culture chamber, a water tank and a fan are mounted at the topof the bottom plate; an air outlet of the fan is connected with a shunt device; the shunt device comprises a hot air pipe, a first regulating valve, a first expanding pipe, an electric heating wire, acold air pipe, a second regulating valve and a second expanding pipe; an air outlet of the fan is communicated with the hot air pipe and the cold air pipe; the first regulating valve is mounted on the hot air pipe; the first expanding pipe is communicated with one end, away from the fan, of the hot air pipe; the electric heating wire is mounted in the first expanding pipe; the second regulating valve is mounted on the cold air pipe; the second expanding pipe is communicated with one end, away from the fan, of the cold air pipe; a mixing chamber is communicated with the side edge of the culture chamber; the first expanding pipe and the second expanding pipe are both communicated with the mixing chamber. According to the strawberry seedling raising device, humidity and temperature in the culture chamber can be adjusted conveniently, and growth of strawberry seedlings is facilitated.

The invention provides a low-energy consumption building house with adjustable room temperature, and relates to the technical field of house construction. The low-energy consumption building house with the adjustable room temperature comprises a house bottom, a house wall and a roof which enclose the house, heat storage and temperature adjustment water tanks are laid in the house wall and roof, aground well is formed in the lower side of the house bottom, inner circulation pipelines are laid on the inner sides of the house wall, roof and house bottom, heating pipelines are laid on the outer sides of the house wall and roof, and the heating pipelines in the house wall and roof correspondingly and circularly communicate with the internal heat storage and temperature adjustment water tanks,the heat storage and temperature adjustment water tanks in the house wall and roof are communicated correspondingly, the heat storage and temperature adjustment water tanks independently and circularly communicate with the inner circulation pipelines in the house wall, roof and roof bottom, and the ground well independently and circularly communicate with the internal circulation pipelines in thehouse wall, roof and house bottom. According to the low-energy consumption building house with the adjustable room temperature, the problems of high cost and large energy consumption when the room temperature of an existing house is adjusted are solved.

The invention discloses a liquid-state molten slag waste heat recycling system. The system comprises a molten slag temporary storage device, a flow control device, a centrifugal graining device and amoving bed device. One end of the molten slag temporary storage device is connected with a slag trough, the other end of the molten slag temporary storage device is connected with the inlet end of theflow control device, the outlet end of the flow control device is connected with the inlet end of the centrifugal graining device, the outlet end of the centrifugal graining device is connected withthe moving bed device, through the molten slag temporary storage device, influence of blast furnace intermittent deslagging on a centrifugal graining system can be effectively avoided, stable runningof the centrifugal graining system can be ensured, the capacity of accident emergency treatment of the waste heat recycling system can be improved, through the flow control device, the centrifugal graining device and the moving bed device, the slag grain sufficient heat exchange and system discharging smoothness can be effectively improved, and the heat exchange efficiency can be effectively improved.

The invention aims to provide a heater for low-temperature ethylene unloading and a working method of the heater. The heater is characterized by comprising a shell pass cylinder, a supporting skirt, a methanol injection port, a drain outlet, a first seal head, an ethylene reinforced cylinder section, an ethylene side pipe box, a first heat exchange pipe bundle, a second seal head, a steam reinforced cylinder section, a steam side pipe box, a second heat exchange pipe bundle, a first detection instrument, a safety valve port, an emptying interface, a liquid level detection interface and a second detection instrument, a detection instrument and a man hole; the ethylene side pipe box is provided with an ethylene injection port and an ethylene outlet, and the steam side pipe box is provided with a steam injection port and a condensate outlet. The whole set of device adopts a double-heat-exchanger structural design, the medium of one group of heat exchange pipe bundles is low-temperature ethylene, the medium of the other group of heat exchange pipe bundles is water vapor, the medium in the cylinder is methanol, and the steam and the low-temperature ethylene exchange heat indirectly, so that the purpose of rising the temperature of the ethylene is achieved. The heater is compact in overall structure, good in heat transfer effect, is energy-saving and environment-friendly, is low in cost, and is safe and reliable.

The invention provides a precise temperature control reaction kettle based on a phase change material, and relates to the technical field of reaction kettles. The reaction kettle comprises a reaction kettle body, a reaction chamber and a temperature adjusting chamber for heat transfer with the reaction chamber are arranged in the reaction kettle body, the reaction kettle body is provided with a hollow temperature control part, a hollow cavity of the temperature control part is filled with a phase change material, the temperature control part is arranged between the reaction chamber and the temperature adjusting chamber, and the temperature control part is used for temperature transfer between the reaction chamber and the temperature adjusting chamber. The reaction kettle solves the problem that the temperature of the reaction kettle used at present is suddenly high and suddenly low when being regulated and controlled and the purpose of accurately controlling the temperature cannot be achieved.