34results about How to "Reduce the difficulty of temperature control" patented technology

The invention discloses a wafer bonding clamping device which comprises a loading platform (110), a clamping mechanism (120), a pressing head (130) and a pressing plate (140). The pressing point of the pressing head (130) in the pressing plate (140) is arranged in an area other than the pressing plate (140) corresponding to a substrate. The pressing plate (140) and the loading platform (110) are made of the same material. The pressing plate (140) is compatible with substrates of all sizes. The invention further discloses an aligning machine and a bonding machine, wherein the aligning machine and the bonding machine use the wafer bonding clamping device. According to the invention, ineffective pressing surfaces can be reduced or eliminated, which facilitates temperature control; the production efficiency is improved; the wafer bonding clamping device has the advantages of uniform pressing performance and improves yield, and is compatible with wafers of all sizes and specifications. The invention further discloses a warping substrate adsorption method, so as to realize the adsorption of a warping substrate.

The invention discloses a process for producing propylene by using an alcohol-hydrocarbon co-refining technology. The process comprises the steps of (1) introducing a raw gas consisting of methanol and/or dimethyl ether, and C4 or C4/C5 cut fractions and diluent gas into a co-refining reaction zone to have a co-refining reaction in contact with a catalyst, thereby obtaining a co-refining reaction product; and (2) putting the co-refining reaction product obtained in the step (1) and a product of an oil refining device or ethylene unit into a separation zone, performing dehydration and oxide removal, and then separating to obtain a product namely propylene and other hydrocarbon byproducts, wherein the C4 and C5 cut fractions in the hydrocarbon byproducts are returned to the co-refining reaction zone after crude separation. According to the process disclosed by the invention, methanol and/or dimethyl ether and C4 or C4/C5 cut fractions are subjected to co-refining, so that a strong thermal effect existing in separate reactions of the two components is effectively neutralized, and the heat exchange difficulty is reduced; the separation zone is shared by the process and the oil refining device or ethylene unit, so that integrated production is realized, the added values of the C4 or C4/C5 cut fractions of the oil refining device or ethylene unit are improved.

The invention relates to a novel PET detector framework based on a SiPM. The novel PET detector framework comprises a detector box, an electronics box and a connecting cable, the connecting cable comprises an upper cable and a lower cable, the upper cable is arranged between the detector box and the electronics box and used for transmitting voltage needed for work of the detector box and output analog signals, the lower cable is arranged on the electronics box and used for transmitting digital and analog signals generated by the electronics box to a data acquisition system, a thermal insulation material is further arranged between the detector box and the electronics box, and the upper cable penetrates through the thermal insulation material. According to the novel PET detector framework, the performance and stability of a PET detector are improved, and the bulk temperature control difficulty and maintenance cost of the PET detector are also effectively reduced.

The invention relates to the technical field of czochralski monocrystalline silicon, and discloses a czochralski monocrystalline silicon growth furnace which comprises a fixed box and a pyrometer. A heat preservation cylinder I is fixedly mounted at the left part of an inner cavity of the fixed box, a heating element is fixedly mounted on the inner wall of the heat preservation cylinder I, and a seed crystal is fixedly mounted on the right side of the top of the fixed box. Through the setting of the growth box, the melting of the polycrystalline silicon is separated from the pulling place of the monocrystalline silicon body; the polycrystalline silicon is continuously melted through the quartz crucible to form a melt to provide a raw material for pulling the monocrystalline silicon body from the interior of the growth box; the quality of the monocrystalline silicon body is prevented from being reduced due to non-uniform thermal field in the quartz crucible; the growth interface temperature in the growth box can be kept within a certain range, and the temperature control difficulty is reduced; meanwhile, the quartz crucible and the growth box are arranged to ensure the sufficiency of raw materials; and through the arrangement of a rotating device, the number of single crystal silicon bodies pulled at a time is increased, and the production efficiency is improved.

The invention discloses a high-temperature and high-pressure water cooling device and a method, which can realize ultra-high-speed cooling and control the bottom cooling temperature flexibly at the same time. The method comprises the steps that cooling water (below 100 DEG C and at atmospheric pressure) with a great quantity of surplus heat generated in other production processes is heated in a high-pressure autoclave continuously to reach the required temperature, and sprayed to the surface of an object to be cooled (for instance, a steel plate) at high speed through a high-pressure water pump and a pipeline, and the object is cooled depending on instantaneous intensive vaporization of high-temperature water for heat absorption; and the intensity of cooling can be controlled by water temperature, water pressure and water flow. Since the high-temperature water is adopted for cooling, the cooled object is not subjected to undercooling; some industrial conditions requiring that the bottom cooling temperature is not less than a certain temperature (for instance, 150 DEG C) can be satisfied, and the cooling system difficult for the ordinary water cooling to accomplish is realized. Taking the step quenching of the steel plate as an example, the purposes of rapid cooling and controlling of the bottom cooling temperature are realized.

The invention provides a method for producing light aromatic hydrocarbon, which comprises the following steps: 1) in the presence of a first catalyst, carrying out first aromatization reaction on a to-be-reacted material containing a low-carbon oxygen-containing organic compound to obtain a first aromatization product; 2) separating the first aromatization product to separate an olefin component and an alkane component from the first aromatization product to obtain a target product; 3) returning the olefin component to the step 1) to carry out a first aromatization reaction; 4) in the presence of a second catalyst, carrying out a second aromatization reaction on the alkane component and methanol to obtain a second aromatization product; and 5) returning the second aromatization product and combining the second aromatization product into the first aromatization product for separation. The method for producing the light aromatic hydrocarbon has the advantages of high yield of the light aromatic hydrocarbon, great economic benefit and the like.

The invention relates to the field of catalyst test devices, in particular to pilot equipment for catalyst detection. The pilot equipment comprises a box, a top cover, a catalyst cabin, a smoke backflow cabin, a sealing cover and a base, wherein the box is fixed on the base; the smoke backflow cabin is mounted in the box; the catalyst cabin is fixed in the smoke backflow cabin; the top cover covers the box; and thermal insulation layers are arranged in the top cover and the box. Smoke in the pilot equipment for catalyst detection is reacted and filtered in the catalyst cabin and then backflowsfrom the smoke backflow cabin, the catalyst cabin is thermally insulated and heated, and the electric energy for heating is reduced, so that afterheat reutilization is realized; and a baffle plate and an electric heating plate are added to reduce the flow speed of the smoke in the backflow process and carry out temperature compensation, so that the catalyst cabin is better thermally insulated andthe afterheat utilization rate is increased.

The invention discloses a compound steel base pouring tank. The compound steel base pouring tank comprises a tank body structure system, a hanging tank supporting and connecting system, a conical body upper end baffle and angle iron. The tank body structure system comprises a barrel, a conical body and the conical body upper end baffle. The hanging tank supporting and connecting system comprises a supporting frame, an upper ring beam, a middle ring beam, a lower ring beam, a box iron support, buffer sleepers, bolts and the angle iron. The barrel is made from rubber or other substitute materials with the specific gravity being smaller than that of steel. The supporting frame, the upper ring beam, the middle ring beam and the lower ring beam are made from titanium alloy or other substitute materials with the specific gravity being smaller than that of steel according to requirements. The defects that in the prior art, a tank body is high in self weight, the single tank hoisting capacity is poor, the construction period is long, and the construction quality is not ensured are overcome. The compound steel base pouring tank has the advantages of being low in hoisting tank body structure self weight, short in construction period, safe in equipment operation and high in economic benefits.

The invention discloses a mask plate temperature control device and a mask exposure device. The mask plate temperature control device comprises a gas temperature control unit, a gas conveying unit anda mask storage unit, wherein the gas conveying unit is used for conveying gas bath gas to the mask storage unit, and the gas temperature control unit is used for adjusting the temperature change range of the gas bath gas conveyed to the mask storage unit by the gas conveying unit to a preset temperature range; the mask storage unit comprises a plate frame main body and partition plates, the partition plates are fixed in the plate frame main body, a containing space is formed between every two adjacent partition plates, and the containing spaces are used for containing mask plates. According to the technical scheme, the temperature control difficulty of the mask plate can be reduced.

The invention relates to a quasi monocrystalline silicon casting device. The device comprises a casting chamber and a seed crystal storage chamber arranged in the shell, an insulation door arranged between the seed crystal storage chamber and the casting chamber, and a seed crystal addition device capable of moving the seed crystal from the storage chamber through the insulation door to a crucible in the casting chamber. The invention also relates to a quasi monocrystalline silicon casting using the device. The method is as below: first heating the crucible and silicon material therein by a heating device; completely melting the silicon raw material into molten silicon, and controlling temperature to a molten silicon state before crystallization; moving the seed crystal from the seed crystal storage to the casting chamber by the crystal addition device; and growing crystal to form a silicon ingot. The quasi monocrystalline silicon casting device and method provided by the invention greatly reduce the difficulty in controlling temperature, and avoid the problems in prior art, such as difficulty in accurate control of crucible bottom temperature and complete melting or failure in melting of the seed crystal, thereby improving production efficiency and effectively guaranteeing the rate of finished products.

The invention provides an electric mechanism for an aviation fuel valve, and belongs to the technical field of valve adjustment control. The electric mechanism comprises a motor, a shell, a speed reducer, magnetic steel, a pointer, a Hall sensor, a relay and an electric connector; the output end of the motor is connected with the speed reducer; the pointer is coaxially fixed with the output end of the speed reducer; the magnetic steel is fixedly connected with the pointer and coaxially rotates; the Hall sensor is arranged along the movement track of the pointer; and the electric connector is connected with a power supply, a superior system of the host and the relay. After the electric mechanism for the aviation fuel valve receives a specified position signal of a superior system, the current shaft locking position of an output shaft is judged according to position signal combinations of Hall sensors at different positions, then the current opening and closing position of a ball valve assembly is judged, and the rotating direction of a motor is judged after the current opening and closing position is compared with a given position, and the reversing operation of the motor is realized through the relay. Compared with the prior art, the invention has the advantages of high reliability and strong anti-interference capability, and meets the requirements of reliability and long endurance of aviation products.

The invention provides a tail gas treatment method and a tail gas treatment device of a vanadium-base alloy rotary kiln production line and application of the tail gas treatment device and relates tothe technical field of tail gas treatment. The tail gas treatment method of the vanadium-base alloy rotary kiln production line includes the step that temperature regulating, dust removing and combustion treatment are conducted on tail gas in sequence, wherein in temperature regulating, the temperature of tail gas is controlled to be 120 DEG C to 480 DEG C. The tail gas treated through the methodcan meet the environment-friendly requirement, in addition, system building investment and material losses are reduced, and the cost is better reduced.