85results about How to "Large heat release" patented technology

Construction features of roadbed are as follows: building vent-pipes perpendicular to direction of roadbed in certain depth of road embankment; installing ventilating units of automatic controlling temperature at end part of vent-pipe; setting up thermal-protection material between vent-pipes/entire up part of vent-pipes with earth material being covered and tamped. The said automatic controlling ventilating units carries out heat exchange between inside roadbed and airflow in low temperature outside. The thermal-protection material protects ever frost effectively. Thus, the invention prevents frost heave and thaw collapse caused by season change so as to keep stability of roadbed in high level. The invention solves issue of carrying construction in zone of frozen earth.

The invention relates to a method for controlling the setting time and early hydration speed of magnesium potassium phosphate cement, and belongs to an early strength quick hardening cement cementing material. A composite retarder can effectively adjust the setting time of magnesium potassium phosphate cement slurry, and the setting time of the magnesium potassium phosphate cement slurry can be effectively controlled in the range of 10 minutes to 6 hours by adjusting the content of chloride and disodium hydrogen phosphate dodecahydrate in the composite retarder, so that the problems of a limited retarding effect, low operability and the like are solved; the composite retarder can change the hydration heat release characteristic of the magnesium potassium phosphate cement, the magnesium potassium phosphate cement slurry doped with the conventional retarder borax has a hydration heat release peak at the initial reaction stage and has a high heat release speed and large heat release amount, and the magnesium potassium phosphate cement doped with the composite retarder has two hydration heat release peaks and has small hydration heat release amount at the initial hydration stage; and the doped composite retarder improves the microstructure and later strength of a hardened magnesium potassium phosphate cement body, so that enough construction operable time can be ensured while the magnesium potassium phosphate cement slurry has early strength and is quickly hardened.

The invention provides automatic ignition powder for a gas generator of an air bag restraint system of an automobile and a preparation method of the automatic ignition powder.The automatic ignition powder contains fuel, oxidant and flame accelerator; the flame accelerator is rare earth and perovskite type composite metal oxide; the general formula of the flame accelerator is La1-xAxMnO3, wherein A is Ce and/or Cu, and x is greater than zero and less than one.According to the automatic ignition powder, the specific flame accelerator is adopted and can effectively promote a redox reaction in the powder, thereby thermal decomposition of the automatic ignition powder is promoted, the decomposition temperature of the powder is lowered, and automatic ignition performance of the powder is improved.

The invention provides a micro oil content ignition coal powder burner capable of improving initial ignition heat, which relates to a burner. The invention solves the problems of difficult ignition of coal powder and unstable burning of the existing burner. The invention has the technical scheme that the micro oil content ignition coal powder burner capable of improving the initial ignition heat of the invention comprises a No.1 main oil gun, a No.2 main oil gun, an oil gun installing branch pipe and a heat insulation burning sleeve barrel, wherein the heat insulation burning sleeve barrel is arranged in the inlet end of the oil gun installing branch pipe, the No.1 main oil gun and the No.2 main oil gun are arranged in the inlet end of the oil gun installing branch pipe from top to bottom, and both of the No.1 main oil gun and the No.2 main oil gun are communicated with an inner cavity of the heat insulation burning sleeve barrel. The invention is mainly applied to W flame boilers, the burnt and used coal types belong to lean coal and blind coal with the characteristics of low volatilization constituent content, high ignition temperature and difficult ignition.

The invention provides an air conditioner for a vehicle having a simple configuration and capable of controlling temperature in a wide range. In a dehumidification heating operation in which a refrigerant is circulated through a first heat exchanger, a second heat exchanger, an evaporator and a compressor in the order named so as to radiate the heat of the refrigerant into the first heat exchanger, there is provided a refrigerant heating means which heats the refrigerant when an outside air temperature is not higher than a predetermined temperature and when an opening degree of the second expansion valve which expands the refrigerant flowing out from the second heat exchanger is larger than an opening degree of the first expansion valve which expands the refrigerant flowing out from the first heat exchanger.

The invention provides a Fischer-Tropsch synthesis oil hydrofining method which comprises the following steps: S1, mixing Fischer-Tropsch synthesis oil with hydrogen, carrying out a low-temperature pre-hydrogenation reaction, and converting unsaturated olefins in the Fischer-Tropsch synthesis oil into corresponding saturated hydrocarbons to obtain a pre-hydrogenation product; S2, performing a deephydrodeoxygenation reaction on the pre-hydrogenation product to obtain a hydrofining product; and S3, circulating a part of the hydrofining product, conducting mixing with Fischer-Tropsch synthesis oil, and then carrying out a low-temperature pre-hydrogenation reaction. Through circulation of a part of the hydrofining product, reaction temperature rise can be reduced, coking carbon deposition andinactivation of a catalyst are prevented, stable operation of the reaction is easy to maintain, and a high olefin conversion rate and a high oxygen-containing compound conversion rate are maintainedfor a long time.

Rapid demolding combined polyether comprises the following components in parts by weight: 50-60 parts of a first type of polyether polyol, 30-40 parts of a second type of polyether polyol, 5-10 partsof a third type of polyether polyol, 5-6 parts of an auxiliary agent, 12-13 parts of a foaming agent and 2-2.5 parts of water. According to the combined polyether, high-functionality sugar ether, sorbitol ether and oil ether are used as the first type of polyether polyol, and more high-functionality amine ether is used as the second type of polyether polyol, so that the mixing affinity and the crosslinking degree of a reaction system are effectively improved, and curing is accelerated; and polyether modified silicone oil is used as a surfactant to improve the intersolubility between componentsin the system and a black material, an amine catalyst, an organic metal catalyst and a trimerization catalyst are used as composite catalysts, the foaming time is balanced, and the demolding effect is synergistically improved.

An induction heating cooker includes: an external shell, a heating coil, a power source circuit, a plurality of temperature detection elements, and a control unit for controlling output of the heating coil. The heating coil is arranged in the external shell. The power source circuit has a plurality of heating elements and supplies a high-frequency current to the heating coil. The temperature detection elements respectively detect temperatures of the heating elements. When one of the temperatures detected by the temperature detection elements has reached a temperature predetermined for each of the temperature detection elements, the control unit lowers the output of the heating coil. When one of the temperatures detected by the temperature detection elements is higher than a first temperature and has reached a second temperature predetermined for each of the temperature detection elements, the output of the heating coil is further lowered.

The invention discloses a high-energy alcohol-based liquid fuel and a preparation method thereof, and belongs to the technical field of alcohol-based liquid fuels. The high-energy alcohol-based liquidfuel comprises an alcohol-based liquid, an auxiliary fuel and a composite additive. The preparation method comprises the following steps: compounding and blending a plurality of chemical raw materials to form the composite additive, compounding and denaturing the alcohol-based liquid with the composite additive, and blending with the matched high-energy stable auxiliary fuel to prepare the high-energy alcohol-based liquid fuel with a high combustion efficiency, a high calorific value, strong power, a good intersolubility, a low energy consumption and a low pollution discharge. The preparationmethod of the high-energy alcohol-based liquid fuel has the advantages of simplicity, no large devices, safe production process, no environmental pollution and wide sources of the raw materials; andthe product has the advantages of safety in storage and transportation, fullness in combustion, high effective heat value, reduction of air pollution, effectiveness in alleviation of energy shortage,great social and economic benefit, suitableness for large-scale quantitative production, and universal promotion values.

The invention discloses low-heat-release and high-biological-activity compound bone cement and a preparation method thereof. The compound bone cement is prepared by mutually mixing 40-80% of solid phase powder and 10-50% of a liquid phase, wherein the solid phase powder comprises graphene, polymethyl methacrylate and hydroxyapatite; the liquid phase comprises methyl methacrylate, hydroquinone anddimethyl-p-toluidine. The compound bone cement is high in syringeability and biological activity; by adding the graphene with the super-high specific surface area, it is ensured that in the using process of the PMMA bone cement, the reaction heat of the PMMA bone cement is gradually released without injuring surrounding bone tissue, and it is ensured that the bone cement has a high plasticity andis capable of being shaped at random. In the solidification process, the polymerization heat release temperature is greatly lowered, the overall performance is excellent, the bone cement can meet requirements of filling and repair of bone defects, and the bone cement can be used as a drug carrier to treat orthopedic related diseases.

The invention relates to a welding flux used for ferrum-based material heat-released jointing and an igniting agent of the welding flux. The welding flux and the igniting agent aim to solve the problems that supply of welding fluxes special for heat-released jointing of ferrum-based materials is not enough, welding joints acquired through prior heat-released jointing welding fluxes contain impurities, large residual stress is caused by difference in coefficients of thermal expansion, and welding joint performance is poor. The welding flux used for ferrum-based material heat-released jointing is composed of ferric oxide powder, 304 stainless steel powder, commercial-purity aluminum powder, niobium powder, copper powder, ferrosilicon powder, ferromanganese powder, fluorite powder, marble powder and lanthanum-cerium alloy powder. The igniting agent of the welding flux used for ferrum-based material heat-released jointing is composed of magnesium powder, barite powder, commercial-purity aluminum powder, red phosphorus powder and fluorite powder. In the using process, the weight ratio of the welding flux used for ferrum-based material heat-released jointing to the igniting agent is (50-60):1. The welding flux and the igniting agent are used for ferrum-based material jointing.

The invention relates to a machine furnace waste heat coupling and utilizing system with a pressure matcher. The machine furnace waste heat coupling and utilizing system comprises a turbine low-pressure cylinder, the pressure matcher, an air heater, an air preheater and a low-temperature coal economizer. The input end of the pressure matcher is connected with the turbine low-pressure cylinder through a low-pressure cylinder gas extraction pipeline and a steam exhaust and extraction pipeline, and the steam exhaust and extraction pipeline is connected with a low-pressure cylinder gas exhaust pipeline, so that low-pressure exhaust gases of a turbine are extracted under the drive of low-pressure gas extraction of the turbine, and steam with pressure between low-pressure steam extraction and low-pressure steam exhaust is generated. The input end of the air heater is connected with the output end of the pressure matcher through a steam pipeline, and the output end of the air heater is connected with the air preheater, so that primary cold air and secondary cold air, which enter the air heater, are preheated by the steam, and the preheated primary cold air and the preheated secondary coldair are outputted to the air preheater. The air preheater is connected with the low-temperature coal economizer. The low-temperature coal economizer is connected with a circulating-water inlet pipeline and a circulating-water outlet pipeline. By the machine furnace waste heat coupling and utilizing system, waste heat utilization of exhaust steam of turbosets is realized.

The invention relates to a special HCCI (Homogeneous Charge Compression Ignition) engine and a realization method thereof. A volume-variable container is arranged to be communicated with a space in a cylinder, the volume of the cylinder is accordingly changed by changing the volume of the volume-variable container, and the compression ratio of the cylinder is changed accordingly, that is to say, the volume of the volume-variable container is increased before ignition time, so that the condition required by HCCI can not be achieved in the cylinder; and the volume of the volume-variable container is rapidly reduced at ignition time, so that the pressure and the temperature in the cylinder are instantaneously increased to realize the HCCI, and the purpose of engine HCCI is achieved.

The invention provides a nanometer iron powder light igniting device which comprises a flashlight and nanometer iron powder. The flashlight releases light pulse energy in an ultra-short time, the nanometer iron powder absorbs the light energy, oxide layer on the surface of the nanometer iron powder is destroyed, and so that nanometer iron particles in the nanometer iron powder reacts with surrounding air.

The invention provides an exothermic catalytic combustion method for a pyrolysis gasification submelting furnace under pure oxygen conditions, which is characterized in that pure oxygen is directly introduced into the pyrolysis gasification submelting furnace for pyrolysis after the ignition. During the pyrolysis, catalysts, namely magnesium powder, aluminum powder or a mixture of the magnesium powder and the aluminum powder is added from the furnace bottom, and the adding amount of the catalysts is between 0.1 and 1.0 kg for each ton of treated substance. During the pyrolysis gasification, the pressure in the furnace is adjusted by adjusting the opening degree of a rectification mechanism to ensure that the pressure inside the pyrolysis furnace is stable. The method has the advantages of low cost, energy conservation, and environmental protection.