57results about How to "Lower initial temperature" patented technology

The invention discloses a comprehensive processing recycling process and device of bromine-contained high temperature flue gas. The comprehensive processing recycling process mainly includes the steps of enabling the high temperature flue gas coming from a high temperature combustor and a second combustor to enter a waste heat boiler for cooling, enabling steam generated by the waste heat boiler to be outwards supplied to users needing the stream for use, enabling the high temperature flue gas to enter a dust removal device so as to remove flying ash in the flue gas, enabling the high temperature flue gas to pass through a flue gas rapid cooling device so that the temperature of the flue gas can be reduced, enabling the flue gas to enter a flue gas cooling device, enabling the sufficiently-cooled flue gas to enter a bromine adsorption device, after the bromine adsorption device is saturated, adopting a small amount of hot air to regenerate adsorption media, enabling high-concentration bromine-contained gas generated by the regeneration to enter a bromine condensing device, enabling the cooled flue gas to be discharged by a chimney, and enabling condensed liquid bromine to be collected by a bromine recycling container which is connected with the bromine condensing device placed in an inclined mode. According to the comprehensive processing recycling process and device of the bromine-contained high temperature flue gas, inorganic bromine in the flue gas is recycled, meanwhile, new waste liquid or new waste residues are avoided, heat energy in the flue gas is recycled to the maximum degree, and the flue gas cooling process is controlled to regenerate dioxin without addition of new chemical reagents.

The invention discloses a three-segmented composite initiator of super-molecular weight polyacrylamide, which is characterized by the following: three-segmented initiator system is composed of reacting speed control agent, solutizer, one-segmented, two-segmented, three-segmented initiator according to certain proportioning; the polyacrylamide with over 25,000 thousand molecular weight can be synthesized stably in the industrial manufacturing, whose reacting speed can be controlled effectively.

The invention provides a preparation and energy recycling system of coal-bed gas hydrate. The preparation and energy recycling system comprises a coal-bed gas booster pump, a refrigerant heat exchanger, a tail gas cooling capacity recycler, an un-reacted coal-bed gas cooling capacity recycler, a hydrate reactor, a hydrate decomposer, a saturated absorption liquid cooling capacity recycler, an absorption liquid circulating pump, and the like. A coal-bed gas is pressurized, cooled by saline water and liquid nitrogen through multiple steps; the coal-bed gas is ventilated from the bottom of the reactor to carry out countercurrent contact reaction with the adsorption liquid sprayed from the top of the reactor; saturated methane adsorption slurry is pumped into the decomposer by a discharging pump from the lower part of the reactor; the saturated absorption slurry carries out countercurrent indirect heat exchange with the absorption liquid entering the decomposer, and is re-pumped into the hydrate reactor after being cooled by the saline water; and methane discharged by the hydrate decomposer through a vent valve enters an LNG (liquefied natural gas) production system. Production cost of extracting methane from the coal-bed gas hydrate is greatly lowered by recycling the cooling capacity in the tail gas exhaustion gas, the cooling capacity in the un-reacted coal-bed gas, and cooling capacity in the statured absorption liquid.

The invention relates to a method for cladding TiC enhanced Ni3Al based composite coating on the surface of aluminum alloy. The method comprises the following steps of: (1) cleaning the surface of aluminum alloy matrix metal and removing greasy dirt and an oxidation layer; (2) uniformly mixing a Ni-based material with TiC powder to serve as a coating material, wherein the weight content of the Ni element of the Ni-based material is over 75 percent; (3) forming a molten bath on the surface of the aluminum alloy matrix metal by using laser beams in an argon protection device; and (4) conveying the coating material into the molten bath to form metallurgical bonding with the aluminum alloy matrix metal, and performing chemical exothermic reaction between Ni and Al to form the TiC enhanced Ni3Al based composite coating. The method has the characteristics of stable preparation process, basic avoidance of sputtering or burning loss, high production efficiency and the like. The prepared TiC enhanced Ni3Al based composite coating cladded on the surface of aluminum alloy has the advantages of good surface quality, uniform TiC distribution and diffusion, tiny crystal particles, metallurgical bonding with the matrix, high wear resistance and the like.

The invention discloses a method for detecting seven prohibited compounds in flavors and fragrances. The seven prohibited compounds are methanol, sec-butyl alcohol, safrole, imidazole, coumarin, musk xylene and sesamol. The detection method can accurately and rapidly detect the contents of the seven prohibited compounds in flavors and fragrances, is suitable for quality safety control of fragrance raw liquid and auxiliary solvents in the industries such as food, daily-use chemical industry, tobacco and pharmacy, and the has the characteristics of simple operation, rapidness, accuracy, good repeatability, high sensitivity and the like.

The invention relates to a preparation method of a red mud sinking agent, which comprises the following steps of mixing acrylamide, acrylic acid and urea with deionized water in weight percent, cooling and regulating the pH value to end the material preparation; mixing the ingredients, chelating agent and chain transfer agent in a reaction kettle, sequentially adding a third section oxidant, a second section oxidant, a first section oxidant, a reducer and an auxiliary reducer in nitrogen introducing process, continuously introducing nitrogen, and than stopping nitrogen introduction, sealing, and carrying out insulation polymerization reaction; opening a reaction kettle bottom valve after being placed, pressing out a rubber block by compressed air and disintegrating the rubber block into colloidal particles by a granulator; and hydrolyzing the colloidal particles, and preparing a product through treatments of granulation, drying, crushing, screening and packaging. The aluminum oxide plant red mud sinking agent has the advantages of high molecular weight, fast dissolving speed, high hydrolysis degree and low cost.

The invention relates to an amorphous copper catalyst and a preparation method and application thereof. The preparation method comprises the following steps: heating copper, aluminum, and an alloy consisting of a transition metal M and aluminum to melt; rapidly cooling and curing the melts; and performing extraction treatment on the cured alloy by using alkali solution so as to extract most aluminum to obtain the catalyst. The catalyst prepared by the method has high catalytic activity and stability and excellent abrasion resistance, and can be applied to catalytic dehydrogenation oxidation reaction of diethanol amine.

The invention discloses a gas supercritical carbon dioxide combined cycle power generation system based on an LNG cold source and an operation method. The system comprises a gas turbine power generation system, a supercritical carbon dioxide power generation system and a bottom cycle power generation system, wherein the cold end of the supercritical carbon dioxide power generation system can improve the cycle efficiency through an interstage cooling mode, and meanwhile, reduces the temperature of a working medium at an outlet of a compressor, and is used for completely recycling exhaust smokewaste heat of a gas turbine; and the bottom cycle power generation system generates power by recycling the cold source loss of the supercritical carbon dioxide power generation system and cold energyof fuel LNG of the gas turbine power generation system. According to the gas supercritical carbon dioxide combined cycle power generation system, energy quality-divided gradient utilization is achieved, the energy utilization rate can be greatly increased, and therefore the power generation efficiency of the system is effectively improved.

The invention discloses a method for preparing high-purity lithium oxide from lithium carbonate. The method comprises the following steps: A, performing acidification neutralization, namely putting battery-grade lithium carbonate into a reaction container, adding concentrated nitric acid, dropwise adding lithium hydroxide and nitric acid, and controlling the pH value to 6-8; B, performing filtering decontamination, namely filtering a mixed solution, dropwise adding lithium hydroxide and nitric acid till the pH value is 11-13, filtering so as to obtain a secondary filtering solution, and dropwise adding lithium hydroxide and nitric acid into the secondary filtering solution till the pH value is 1-2 so as to obtain an adjusted solution; C, performing crystallization, separation and drying, namely performing evaporation crystallization on the adjusted solution, performing cooling centrifugal separation, and drying so as to obtain lithium nitrate; and D, performing high-temperature decomposition, namely putting the lithium nitrate into a decomposition furnace, vacuuming to minus 0.01MPa to minus 0.09MPa, rapidly heating to 500 DEG C within 2-3 hours, heating to 650-750 DEG C within 6-10 hours, keeping the temperature for 8-12 hours, and keeping a vacuum degree of minus 0.01MPa to minus 0.09MPa in the heating and temperature keeping process, thereby obtaining high-purity lithium oxide finally. The method disclosed by the invention is simple in process, low in cost of raw materials and the like, low in unit energy consumption, relatively thorough in decomposition, high in purity of the prepared lithium oxide, and high in production efficiency.

The invention relates to the technical field of copper-clad plate production for mobile communication circuit boards, in particular to copper-based resin prepreg production equipment for the mobile communication circuit boards. The equipment comprises a copper foil winding drum, a grinding device, a coating device and a cutting device, a drying device and a glue supply device, wherein the copper foil winding drum, the grinding device, the coating device and the cutting device are sequentially arranged from front to back, the drying device is installed below between the coating device and the cutting device, and the glue supply device is connected with the coating device through a conveying pipe. A copper-based resin prepreg produced by using the equipment and reinforcing materials are laminated at high temperature to manufacture a copper-clad plate, so that the problem that in the prior art, the yield of copper-clad plate production is reduced due to the fact that defects such as inclusion of bubbles, uneven composition of the prepreg are prone to occurring in the processes of gum dipping and curing of the reinforcing materials is solved.

The invention provides a cooling and heating integrated cabinet, a temperature controlling method and an unmanned vehicle. The cooling and heating integrated cabinet comprises a heating chamber and aPTC heating element, and the PTC heating element is connected with the heating chamber in a thermal conductivity mode. The cooling and heating integrated cabinet further comprises a compression heating system, and the compression heating system comprises a compressor, a condenser, a throttling device and an evaporator. The compressor, the condenser, the throttling device and the evaporator are connected in series successively, and the condenser is connected with the heating chamber in a thermal conductivity mode. First, the compression heating system is turned on to heat the heating chamber, the temperature of the heating chamber is raised at a lower power, and then the PTC heating element is switched to heat the heating chamber to reduce energy consumption. The unmanned vehicle adopting the cooling and heating integrated cabinet can heat or cool goods, the energy consumption for heating is low and the time of endurance is long.

The invention discloses a high-temperature flame-retardant foaming agent. The foaming agent is prepared from, by weight, 20 to 30 parts of azodicarbonamide, 10 to 15 parts of gelatin, 0.1 to 0.3 part of alkaline protease, 8 to 10 parts of flame-retardant mesoporous silicon dioxide and 15 to 25 parts of deionized water. The invention also discloses a preparation method of the high-temperature flame-retardant foaming agent. The azodicarbonamide and a protein type foaming agent are compounded according to a proper compatibility ratio, the defect that the foam stability of the azodicarbonamide is poor is effectively overcome, the composite organic foaming agent is loaded in the carrier mesoporous silica and can be uniformly dispersed in a polymer matrix, and the composite organic foaming agent is used as a bubble nucleation point to make particles of the foaming agent refined, so the problems that foam holes of a foam material prepared by the foaming agent are not uniform and the density of the foam holes is low are solved, and the foaming agent has flame retardance and high temperature resistance, so that the foaming agent has a certain application prospect and market value.

The invention relates to the technical field of biomass gasification, and discloses a water-cooling fire grate type biomass gasifier which comprises an ash passing channel, a water tank is fixedly installed at the bottom of the ash passing channel, an ash discharging hopper is fixedly installed at the upper end of the ash passing channel, and an energy reducing device is arranged on the inner side wall of the ash passing channel. A turntable is fixedly mounted in the middle of the energy reducing device. The energy reducing device is arranged in the ash passing channel, gravitational potential energy of ash is used as power for rotation of the fan blades to reduce the gravitational potential energy of the ash, meanwhile, the contact area of the fan blades and the ash is increased through the fan blades and the through holes of the fan blades, and heat of the ash passes through the eccentric rod and the heat conduction ring, the heat is used for the expansion effect of gas in the gas containing cavity to reduce the initial temperature of ash, the water impact phenomenon is reduced by reducing the potential energy and temperature of downward impact of the ash, the temperature of water vapor is reduced, and the impact phenomenon in the water tank is reduced.

The invention discloses processing, conveying and cooling equipment for a gypsum production line. The processing, conveying and cooling equipment comprises a cooling box and a conveying hopper; a conveying belt used for conveying gypsum is arranged in the conveying hopper, the conveying hopper penetrates through the two side walls of the cooling box in a sealed mode, and a cooling through opening is formed in the position, located on the upper wall of the cooling box, of the conveying hopper in a penetrating mode; a processing space is formed in the part, located above the cooling through opening, of the cooling box; a connecting space is formed in the part, located below the conveying hopper, of the cooling box; a sealing plate is connected into the processing space in a sealed mode; and a cold air storage cavity is formed in the space, located below the sealing plate, of the processing space; the space, located above the sealing plate, of the processing space is arranged to be an excess material recycling cavity; a cooling structure is arranged in the cold air storage cavity; and a recycling structure is connected into the excess material recycling cavity. The equipment has the advantages that the rapid cooling process is better achieved, the tail gas absorption effect is achieved, and raw material waste and air pollution are avoided.

The invention discloses a fixed type water chiller capable of recycling waste heat. The fixed type water chiller comprises a machine shell and a bottom plate, wherein the bottom plate is fixedly connected with the outside ground through a plurality of bolts; a liquid tank is fixedly arranged at the bottom of the bottom plate; a refrigerating machine is fixedly arranged in the machine shell; a cooling liquid outlet pipe, a water inlet pipe, a water outlet pipe and a cooling liquid inlet pipe are arranged in the refrigerating machine respectively; the water outlet pipe is communicated with a material distribution box; the other end of the material distribution box is communicated with a plurality of backflow pipes; the plurality of backflow pipes penetrate through the bottom plate and are communicated with the interior of the liquid tank; and the backflow pipes are connected with a waste heat utilization structure and a cooling recycling structure. The fixed type water chiller has the advantages that a cooling medium and cooling liquid are cooled through an evaporation cooling process of low-boiling-point evaporation liquid and an air cooling process of heat dissipation blades respectively, and the problem that liquid water enters a cooling system is solved, so that the cooling efficiency is improved, the total amount of water in the water circulating flowing process is reduced, and resources are saved.

The invention discloses a cooling system device for a magnetic axial bearing. A rotating ring is rotatably arranged in an annular seat, and a plurality of snifting valves for cooling the magnetic bearing are arranged on the rotating ring along the circumference; a rotating mechanism is arranged on a mounting base, an air supply assembly used for pumping air into the rotating ring is further arranged on the mounting base, and a condensation assembly used for cooling the pumped air is attached to the air supply assembly; when a power device works, the air supply assembly and the condensation assembly are driven to work at the same time, wherein the air supply assembly continuously pumps air flow to an extending part of the rotating ring, and the fed air flow is sprayed to the magnetic bearing through the snifting valves distributed circumferentially; the condensation assembly is used for cooling the air flow passing through the air supply assembly, so that the air flow sprayed out of the snifting valves has a low initial temperature, and heat exchange with hot air around the magnetic bearing is achieved; and in addition, the air supply assembly drives a cargo transfer mechanism to act so as to drive the whole rotating ring to rotate.