70results about How to "Lower temperature range" patented technology

A method for utilizing whole crude oil as a feedstock for the pyrolysis furnace of an olefin production plant wherein the feedstock after preheating is subjected to mild catalytic cracking conditions until substantially vaporized, the vapors from the mild catalytic cracking being subjected to severe cracking in the radiant section of the furnace.

A method for utilizing whole crude oil as a feedstock for the pyrolysis furnace of an olefin production plant wherein the feedstock after preheating is subjected to mild cracking conditions until substantially vaporized, the vapors from mild cracking being subjected to severe cracking in the radiant section of the furnace.

The invention relates to a non-noble metal supported selective hydrogenation catalyst and a preparation method and application thereof. The catalyst comprises a carrier, and a main active component and an auxiliary active component which are loaded on the carrier, wherein the main active component is nickel, and the auxiliary active component is at least one of Mo, La, Ag, Bi, Cu, Nd, Cs, Ce, Zn and Zr; and the active components exist in amorphous forms, the average grain diameter is less than 10 nanometers, and the catalyst is prepared by a micro-emulsion method. The catalyst has evenly distributed active components and high dispersity, and can resist the erosion of poisonous materials of arsenium, sulfur and the like. The catalyst has good hydrogenation performance which is higher than that of the prior level of the conventional non-noble metal catalyst and is close to the level of a noble metal Pd catalyst in the reaction for removing acetylene hydrocarbon through C2 selective hydrogenation.

Apparatus and method for efficiently storing thermal energy, in particular thermal energy transferred from a concentrated solar energy receiver. The apparatus consists of a collection of modular thin walled tube pressure vessels enclosing solid sensible heat thermal storage elements. The high temperature solid is separated from the thin wall by thermal insulation and two thin gaps that carry the cold in and cold out high-pressure working fluids. Hot in and hot out working fluids circulate in counter flow channels within the solid sensible heat thermal storage elements. The solar receiver can also be modular to match the thermal storage elements, facilitating manufacturing and on site assembly. The design enables scalable thermal storage and concurrent thermal charging and discharging with no circuit switching between charge and discharge.

A refrigerator for storing a beverage at an optimal temperature to stably supercool the beverage and maintain the beverage in a supercooled state, and that can rapidly produce a supercooled beverage while maintaining the supercooled state of the beverage. A supercooling apparatus of the refrigerator includes a storage to which chilled air is supplied from a chilled air supply unit, a supercooling compartment positioned in the storage and refrigerated by the chilled air to indirectly refrigerate an object therein, a hole formed at one side of the supercooling compartment to allow flow of the chilled air into and from the supercooling compartment, and a damper to open or close the hole. The object is directly or indirectly refrigerated in the supercooling compartment according to user's selection by opening or closing the damper.

A heat-resistant aluminum alloy material with high strength and preparation method thereof are provided. The aluminum alloy material comprises (by weight %): Cu: 1.0˜10.0, Mn: 0.05˜1.5, Cd: 0.01˜0.5, Ti: 0.01˜0.5%, B: 0.01˜0.2 or C: 0.0001˜0.15, Zr: 0.01˜1.0, R: 0.001˜3 or (R1+R2): 0.001˜3, RE: 0.05˜5, and balance Al:, wherein, R, R1, and R2 include Be, Co, Cr, Li, Mo, Nb, Ni, W. The Al alloy has the advantages of narrow quasi-solid phases temperature range of alloys, low hot cracking liability during casting improved high temperature strength and high heat resistance.

A motor speed control device. The motor speed control device applied to a direct current (DC) fan includes a driving element constituted by a driving IC and Hall IC, a thermal sensor and a control element electrically connected between the driving element and the thermal sensor. The present invention utilizes a thermal sensor and a simple control element to effectively and stably control the variable speed of the fan within different temperature ranges.

The invention discloses a device and a method for treating organic waste gas by catalysis and ozonation. The method comprises the following steps: (1) the organic waste gas is collected and enters a pretreater, the waste gas is pretreated and oil drops, particulate matter, acid etchant gas and fog drops in the waste gas are intercepted; (2) after the pretreated organic waste gas is pressurized by an induced draft fan, the organic waste gas enters the cold end of a heat exchanger to be preheated; (3) the preheated organic waste gas enters a catalytic oxidation device, the organic waste gas entering the catalytic oxidation device is warmed up and then is mixed with ozone fed into the catalytic oxidation device, and the mixed gas enters a catalytic oxidation reaction region of the catalytic oxidation device to be subjected to the catalytic oxidation reaction so as to remove organic pollutants; (4) the purified gas serving as a heat source enters the hot end of the heat exchanger in the step (2) to be subjected to heat exchange and the gas subjected to heat exchange is discharged by an exhaust pipeline. When being combined with the treatment device disclosed by the invention, the treatment method disclosed by the invention has a better purifying effect on the waste gas and not only ensures purifying efficiency of the waste gas, but also is energy-saving and environment-friendly.

A refrigeration control system in combined refrigeration appliances of the type comprising: a refrigerating compartment; a freezing compartment; a compressor; an evaporator; a refrigerating compartment fan and a freezing compartment fan; and a control means to activate and deactivate the compressor and both the refrigerating compartment fan and the freezing compartment fan as a function of the activation and deactivation temperatures detected by the refrigerating compartment temperature sensor and the freezing compartment temperature sensor. The control means is operatively associated with the refrigerating compartment fan to selectively and periodically adjust the speed of the latter, so that the temperature of the refrigerating compartment reaches a deactivation value of the refrigerating compartment fan at the same time in which the temperature of the freezing compartment reaches a deactivation value of both the freezing compartment fan and the compressor.

This invention relates to a cerium-zirconium-base composite oxide, which is useful, e.g., for the purification of exhaust gas discharged from combustion engines such as internal combustion engines and boilers and can release a high level of oxygen in a low temperature region, a method for producing the same, an oxygen storage / release component using the same, an exhaust gas purification catalyst, and an exhaust gas purification method. The cerium-zirconium-base composite oxide satisfies requirements (1) that the oxygen release initiation temperature is 380° C. or below, (2) that the oxygen release amount is not less than 485 μmol / g, and further (3) that the oxygen release amount at 400° C. is not less than 15 μmol / g. The cerium-zirconium-base composite oxide can be produced, for example, by mixing a starting material for cerium and a starting material for zirconium at a predetermined mixing ratio together, melting the starting material mixture at a temperature at or above the melting point, then cooling the melt to form an ingot, then optionally grinding the ingot to prepare powder, subsequently removing strain within powder crystal grains under heating, and then grinding to a further fine state.

An improved method and apparatus for producing a stable, non-toxic, antimicrobial electrolyzed saline solution with a broad range of anti-infective and therapeutic applications. The resulting electrolyzed saline solution exhibits a marked lack of toxicity upon intravenous, aspired, oral or topical application in mammals for therapeutic applications providing a broad platform, including topical disinfection, antimicrobial application, wound treatment, oxidative stress reduction and enhancement of immune function to better detect malfunctioning cells.

A heat pump system for air conditioning adaptable to cold regions, comprising a compressor, a condenser, a thermal expansion valve and an evaporator and forms a closed circuit. The structure features that said compressor is a scroll compressor, and a supplementary inlet is provided on the inlet side of the compressor. A subcooler is provided between the condenser and the expansion valve, thus forming a closed circuit with an electromagnetic valve and an electronic expansion valve for supplementary refrigerant vapor to the supplementary inlet of the compressor. Compared to the prior art, the present invention is simple in structure, easy to manufacture and assemble, highly effective in energy utilization and low cost, and the system can operate in low temperature environment with stability and reliability. Therefore, it is particularly suitable for popularization and application in cold regions.

A lubricant composition comprises: (A) a non-silicone base stock oil; and (B) a silicone oil. The Viscosity Index of the lubricant composition, as measured in accordance with ASTM D 2270-10e1, is greater than that of the non-silicone lubricant base stock oil (A) by at least 10% and is shear stable according to DIN 51350-6.

The invention belongs to the technical field of preparation of hexagonal boron nitride (h-BN) and a hybrid structure thereof, and particularly relates to a method for preparing h-BN and the hybrid structure thereof through plasma enhanced chemical vapor deposition (PECVD). Copper foil serves as a substrate, solid borane ammonia complex serves as a boron source and a nitrogen source, and the hybrid structure of the h-BN is prepared through PECVD. The method includes the specific steps that the substrate and the borane ammonia complex are arranged in a quartz boat and then put into a PEVCD system to be vacuumized; a reaction furnace is heated to a corresponding temperature, gas is introduced to the reaction furnace, and then the substrate is moved to the center of the furnace; the system pressure is adjusted, and heat treatment is carried out; the h-BN and the hybrid structure thereof are grown; and the h-BN and the hybrid structure thereof are cooled to the room temperature. The method for preparing the h-BN and the hybrid structure thereof through PECVD is simple in process, easy and convenient to operate, high in controllability and capable of achieving continuous regulation of the band gap of the h-BN and the hybrid structure thereof.

The invention provides a lithium bromide II adsorption and compression composite type high-temperature heat pump system. The system comprises an evaporator, a first water vapour compressor, a water vapour absorber, a first throttle valve, a solution reheater, a generator, a solution pump, a condenser, a water pump as well as a second water vapour compressor and a waste heat heating heat exchanger.The system can increase pressure difference and temperature difference between the evaporator and the water vapour absorber through the first water vapour compressor, so that a heat supply temperature of the absorber can be increased, and heating and reutilizing of low-temperature waste heat resources are realized through the second water vapour compressor and the waste heat heating heat exchanger. The system expands the waste heat recycling temperature of the original lithium bromide II absorption type heat pump to 20-100 DEG C from 80-100 DEG C, and expands the heat supply temperature to 90-170 DEG C from 90-150 DEG C, so that the range of application of the system is increased, effective recycling of waste heat at different temperature sections is realized, energy is saved, and energyconsumption in an industrial production process is reduced.

The present invention provides a manufacturing method of a magneto-resistance effect element, in which the step coverage of a formed film can be enlarged and also the film can be deposited in a low temperature range. In an embodiment of the present invention, an insulating protective layer is formed on a multilayered structure by a plasma CVD apparatus in which a plasma source and a film deposition chamber are separated from each other by a partition wall plate. According to the present method, it is possible to deposit the protective layer without inviting the degradation of a magnetic characteristic and also to perform low temperature film deposition even at a temperature lower than 150° C. Hence, it is possible to deposit the protective layer while leaving resist and also to reduce the number of steps in the manufacturing of the magneto-resistance effect element having a multilayered structure.

In a substrate processing method, a substrate to be processed is mounted on a mounting table in a processing chamber of a substrate processing apparatus, and while heating the substrate by a heating unit through the mounting table to a processing temperature of 700° C. or higher, the substrate is processed. The substrate to be processed is loaded into the processing chamber, a first preliminary heating is performed until the substrate reaches a prescribed temperature while being mounted on the mounting table. Then, substrate supporting pins of the mounting table are elevated, and a second preliminary heating is performed in a state where the substrate is held on the substrate supporting pins. Then, the substrate supporting pins are moved down to mount the substrate on the mounting table and a process such as plasma oxidation is performed thereon.

The invention provides a polyvinylidene floride derivative with a general formula (1) taken as a liquid crystal medium component, and a preparation method and application thereof. The derivative is a negative liquid crystal compound and has big dielectric anisotropic absolute value, proper optical anisotropy, high clearing point and wider nematic phase temperature range; and a display applying the derivative has quicker response speed and wider working range and can keep good display in various environments. The invention also provides one or more liquid crystal composition(s) including the derivative and a liquid crystal element including the liquid crystal composition (s).

A low-plasticity Al-alloy for piston is prepared from low-plasticity cast Al-alloy as basic component, As-enriched RE mixture, Sn, Pb, Zn, Cr and Ti. Its advantages are low linear expansibility, dnd high strength, hardness, volume stability and machinability.

The invention belongs to the technical field of high-precision temperature control of lasers. Most of the existing chaotic light sources are built by combining the semiconductor lasers with various external discrete optical elements, the structure is complex and is easily influenced by the environment, and the output wavelength and a threshold current are influenced by the change of the temperature, so that the output chaotic state of the laser is unstable. The invention provides a high-precision and high-stability temperature control system for a chaotic semiconductor laser. According to thepresent invention, two timers drive an H-bridge driving module, so that the stability and the reliability of the current of a semiconductor chilling plate are realized; the laser temperature change isfed back to a microcontroller module through a temperature feedback module to be compared with the set temperature, the obtained difference enables the laser temperature to rapidly reach the set temperature through a fuzzy PID algorithm, and the current direction of the semiconductor chilling plate is stably changed, so that the dead-zone-free control over the temperature is achieved.

A de-icing device includes a hot air circuit including an inlet for hot air bled from an engine, and a duct connecting the inlet to an outlet of the circuit which opens towards the leading edge. The device also includes electrical heating means associated with the duct, and control means for controlling the heating means connected to detection means that detect the temperature of the hot air downstream of the heating means and are able to activate these if the detected temperature of the bled air is below a value corresponding to a minimum temperature required for de-icing, increased by a predetermined margin. The range of temperatures of the hot air supplied to the leading edge is lowered overall, whereas the minimum de-icing temperature is assured. Composite materials can be used near the leading edge without being damaged.

The invention relates to an alloy comprising (in mass %) Ni 33-35%, Cr 26-28%, Mo 6-7%, Cu 0.5-1.5%, Mn 1.0-4%, Si max. 0.1%, Al 0.01-0.3%, C max. 0.01%, N 0.1-0.25%, B 0.001-0.004%, SE>0 to 1%, and Fe remainder, including unavoidable impurities.

An ionic air cooling device comprising a salinity differential heat engine using a heat pump as the primary heat source and the mechanism by which the temperature differential is achieved. A closed loop thermodynamic cycle which produces a high thermodynamic efficiency in heat to energy conversion with a low temperature differential between the high and low sides, in addition to a net ambient temperature cooling effect by directly or indirectly converting ambient temperature / environmental low grade heat to electricity or potential kinetic energy or mechanical work. An ionic air cooling device which uses a salinity differential heat engine in which the heat energy can be converted to kinetic or electrical energy by means of pressure retarded osmosis, pressurized gas through volume confinement, or reversed electro dialysis.

Self-cooling compositions and systems adapted to rapidly chill a substance in a compact container are provided. In some implementations, the composition comprises an aqueous solution and solid chemical reactants, wherein at least one solid chemical reactant is selected independently from the group consisting of NH4NO3, urea, and mixtures thereof; and a second solid chemical reactant is selected independently from the group consisting of NH4Cl, calcium sulfate, borax, phosphates, MgCl2, carrageenan, and mixtures thereof. The self-cooling compositions and systems can have a wide range of applications such as cooling comestibles or medical assay kits.

The invention is applicable to the technical field of atmospheric water production, and provides a novel refrigerating system and a refrigerating system. The system comprises a water production pipeline refrigerating circulating loop and a water tank pipeline refrigerating circulating loop, wherein the water production pipeline refrigerating circulating loop comprises a first compressor, a first condenser, a first throttling device, a first evaporator and a centrifugal fan; the water tank pipeline refrigerating circulating loop comprises a second compressor, a second condenser, a second throttling device and a second evaporator; the first evaporator and the second evaporator are connected in parallel and are connected in series with the condensers and the compressors to correspondingly form the water production pipeline refrigerating circulating loop and the water tank pipeline refrigerating circulating loop. With the adoption of the novel refrigerating system, the heat and humidity exchanging efficiency of air and the system, as well as the water production efficiency can be improved; and the problems that an existing refrigerating system is low in water production efficiency andis hard to produce water under low temperature can be solved.

The invention discloses a heat treatment process for a fine grain austenitic steel pipe bend. The process comprises the following steps: carrying out heat treatment on the fine grain austenitic steel pipe bend in a heat treatment furnace at a temperature of 900 to 1050 DEG C for 2 to 120 min, discharging the bend out and cooling the bend by using air or water; detecting the hardness and the grain size of the bend after heat treatment is finished. The heat treatment process provided in the invention enables residual stress after pipe bending to be effectively eliminated, the grain size to be effectively controlled, excellent performance of fine grain austenitic stainless steel in a manufacture process to be retained and production cost to be saved.

The invention provides a wheel sensor, which comprises a fixed bracket and a giant magneto resistive sensor. The giant magneto resistive sensor comprises a bias magnetic field, a signal conditioning circuit and a giant magneto resistive chip; the signal conditioning circuit comprises an instrument amplifier, a digital comparator and a low-pass filter which are electrically connected with each other sequentially; the instrument amplifier is connected with the giant magneto resistive chip; the N-pole of the bias magnetic field is arranged correspondingly to the giant magneto resistive chip. The wheel sensor adopts the design of giant magneto resistive sensor, can be used for detecting the train wheels, effectively reduces the volume of the system, improves the working temperature range of the system and the stability of the operation of the system, and can be excellently applicable for the working environment of railway situations.