45results about How to "Reduce temperature requirements" patented technology

Process for production of acid and high temperature resistant cement composites, where the matrix is alkali activated F fly ash alone, F Fly ash combined with ground slag or ground slag alone. F-fly ash produces lower quality alkali activated cement systems. On the other hand the lack of calcium oxide results in very high resistance to medium and highly concentrated inorganic or organic acids. The high strength and low permeability of pure F-fly ash cement systems is achieved by using in the composition un-densified silica fume, the amorphous silicone dioxide obtained as by products in production of ferro-silicones. Precipitated nano-particle silica made from soluble silicates and nano-particle silica fume produced by burning silicon tetra chloride in the hydrogen stream.

The invention discloses a low-temperature melting block finished glaze and a preparation method thereof. The low-temperature melting block finished glaze is prepared by uniformly mixing the following materials in parts by weight: 90-94 parts of low-temperature melting block and 6-10 parts of kaolin, wherein the low-temperature melting block comprises mineral materials, mineralizing agents and fluxing agents; the mineral materials are industrial quartz and aluminium hydroxide; the mineralizing agents are potassium carbonate, lithium carbonate and lithium fluoride; and the fluxing agents are calcium carbonate, zinc oxide, boric acid, sodium borate and red lead. In the low-temperature melting block finished glaze prepared by the invention, qualified ceramic can be glaze-fired at the temperature of 850-900 DEG C, so that the temperature resistance requirement on kiln furnace equipment is reduced, the energy consumption of a ceramic product is reduced, further the manufacturing cost is reduced and ceramic pigment generates brighter color on the ceramic product.

The invention discloses a preparation method for an engineering ceramic acid and alkali resistant container. The preparation method comprises steps of batching of blank material raw materials, forming of the blank material, batching of glaze material raw materials, preparation of the glaze material, biscuiting, glaze application and sintering. The engineering ceramic acid and alkali resistant container has advantages of high acid resistance, high alkali resistance, particularly being free from pollution of media, high mechanical strength, high compactness, high dimensional precision, low water absorption, good heat stability, small thermal expansion coefficients, leak resistance and the like. The carcass is compact, the glaze is bright and clean, and there are no defects of pin holes, glaze shrinkage, thin glaze and the like. The defective percentage is lowered, and the production efficiency is raised. Temperature-resistant requirements to a kiln device are eliminated, and the production cost is lowered. The novel engineering ceramic acid and alkali resistant container has good appearance quality and performance indexes, and is an ideal product raising economic benefits.

The invention provides a gas distributor for an ash agglomerating fluidized-bed gasification furnace. The gas distributor comprises a gasification furnace shell, a tapered distribution plate, at least three distributed injection pipes, a slagging pipe and a gas inlet pipe of a gas chamber, wherein one end of the slagging pipe is connected to the bottom of the tapered distribution plate, and is open, and the other end of the slagging pipe penetrates through the gasification furnace shell, and is connected with a gasification agent gas source. The gas distributor is characterized in that one end of each distributed injection pipe is connected to the lower part of the tapered distribution plate, and is open, and the other end of each distributed injection pipe penetrates through the gasification furnace shell, and is connected with the gasification agent gas source; and openings of the distributed injection pipes in the tapered distribution plate are symmetrically and uniformly distributed about the center of the slagging pipe. The gas distributor is high in fluidization performance, adapted to long-cycle running, simple in structure and applicable to a large-sized fluidized-bed gasification furnace.

The invention relates to a device for preparing fuel salt of a molten salt reactor. The device comprises a gas supply system and a tail gas treatment system which are connected with a reaction system,wherein the reaction system comprises a reaction kettle containing reducing metal and a reaction heating furnace used for heating the reaction kettle; the gas supply system comprises gas supply equipment supplying inert gas and/or UF6gas into the reaction kettle; and the tail gas treatment system comprises treatment equipment for absorbing excess UF6 gas and tail gas in the reaction kettle. The invention further provides a method for preparing fuel salt of the molten salt reactor through the device. The device directly reduces UF6 in molten salt to prepare UF3 and/or UF4 to obtain fuel salt,simplifies the production process of molten salt, and has the advantages of short technical process, simple and flexible operation, no radioactive powder operation, material cost saving and energy saving.

The invention discloses a TiO2-based electric heating coating and a preparation method thereof. The electric heating coating which coats the surface of a base body comprises a bonding layer, an insulating and heat-insulating layer, a ceramic heating layer and an insulating and heat-conducting protective layer sequentially from bottom to top, and is connected with a power supply through electrodesinlaid at the two ends of the ceramic heating layer and binding posts thereon. The ceramic heating coating material is a TiO2-based ceramic material; a dopant comprises at least one of Al2O3, MgAl2O4,Cr2O3 and YSZ; and the resistance value and the heating effect can be controlled by regulating and controlling the thickness of the coating, the dopant materials and the proportioning. The electric heating coating is good in interlayer bonding, uniform and dense in tissue, high in heating speed and uniform in temperature distribution, and can meet long-time stable operation at the temperature of350 DEG C under the condition of low energy consumption; furthermore, the preparation method is high in efficiency and low in cost, and the preparation process is environmentally-friendly and pollution-free.

The invention provides a waste medicine combustion system. The waste medicine combustion system comprises a waste medicine combustion unit, wherein the waste medicine combustion unit is provided withan ice hole structure; waste medicines are placed in the ice hole structure; the waste medicine combustion unit communicates with a tail flame treatment unit; the ice hole structure is made of ice; tail flame generated by combustion of the waste medicines in the ice hole structure of the waste medicine combustion unit is guided into the tail flame treatment unit; and the tail flame treatment unitperforms harmless treatment on the tail flame. The combustion speed of the medicines is determined by the combustion surface and the surface temperature, and a solid propellant (medicine) used by an engine can control the combustion surface through shaping so as to control the combustion speed. However, the waste medicines are irregular fragments or powder, and the combustion surface cannot be controlled, so that the ice hole structure is used for controlling rapid rise of the surface temperature, and the combustion speed is well controlled. If heat released after combustion of the waste medicines is positively fed back, the temperature can rise rapidly, and the waste medicines are combusted by adopting the ice hole structure, namely, the heat is absorbed, so that the temperature rise speed is reduced, and the combustion speed is controlled.

The invention belongs to the technical field of gas turbine engines, and particularly relates to a center body of a flame tube for a radial staged combustion chamber, the center body is annular and can be arranged between a main combustion stage flame head and an on-duty stage flame head, a plurality of air inlet holes are formed in the front side of the center body, and a plurality of air outlet holes are formed in the rear side of the center body. A plurality of center holes are formed in the rear side of the center body; an annular cavity is formed in the center body, and the center hole and the air inlet hole are both communicated with the annular cavity; a plurality of inclined holes are formed in the inner cavity wall and the outer cavity wall of the annular cavity, airflow is led out of the center body, and a cooling air film is formed outside the center body. The center body has the advantages of being simple in structure, convenient to install, high in reliability, long in service life and the like. Mutual independent stable combustion of on-duty level flames and main combustion level flames can be achieved, and cross flame of the on-duty level flames and the main combustion level flames can be achieved when working conditions are switched. The center body can be made of a high-temperature alloy material, so that ablation in a high-temperature working environment for a long time is avoided.

The invention discloses a contaminated soil medium-temperature dry-screen weight reduction treatment system and an application, and belongs to the technical field of contaminated soil weight reduction treatment. The system comprises a rotary dryer and a heating device, wherein the rotary dryer is provided with a metal cylinder with a horizontal inclination angle; the heating device is composed of combustion equipment and a flue gas circulating system connected between the combustion equipment and the rotary dryer; and the heating device is used for providing a temperature higher than or equal to 65 DEG C and lower than 130 DEG C to soil materials in the metal cylinder of the rotary dryer. The contaminated soil medium-temperature dry-screen weight reduction treatment system is remarkable in weight reduction effect especially for contaminated soil which is relatively high in moisture content, more in clay, not obvious in normal-temperature screening reduction or not suitable for leaching.

A process for cooling the oil vapour at 580-670 deg.c during catalytic cracking reaction and recovering its heat energy is characterized by use of an oil vapour cooler arranged on the top of reaction settling unit. Said cooler contains multiple layers of shaped baffle and the cooling liquid medium and counter-flow high-temp oil vapour for direct contact. Its advantage is high heat exchange efficiency.

The invention discloses a combined fuel supply device, a combustion chamber and a fuel supply method. The combined fuel supply device comprises a fuel supply mechanism extending in the radial direction, a radial stabilizer arranged behind the fuel supply mechanism and a connecting section used for connecting the fuel supply mechanism and the radial stabilizer. The fuel supply mechanism comprises a fuel injection rod and a fuel supply pipe which is coaxially distributed with the fuel injection rod and arranged at the outer side of the fuel injection rod, a plurality of fuel injection nozzles which are used for fuel injection and distributed in the radial direction are formed in the fuel injection rod, openings of the fuel injection nozzles are located at the outer side of the fuel supply pipe, and the fuel injection direction of the fuel injection nozzles is perpendicular to the incoming flow direction. According to the combined fuel supply device, the thermal protection problem under the high-temperature large-incoming-flow condition and the efficient combustion organization problem under the low-temperature large-incoming-flow condition can be solved.

The invention discloses a full-automatic high-temperature-melt release mechanism and a control method thereof. The release mechanism comprises a temporary storage container, wherein the upstream portion of the temporary storage container is connected with a low-pressure container loaded with a smelting furnace through an upstream release pipeline; a protective gate valve and an upstream main sealing valve are sequentially arranged on the portion, from the low-pressure container to the upstream release pipeline of the temporary storage container, of the temporary storage container; a downstreamrelease pipeline is arranged on the downstream portion of the temporary storage container, a melt release valve and a downstream main sealing valve are arranged on the downstream release pipeline, the melt release valve is arranged on the side close to the temporary storage container, and the downstream main sealing valve is arranged on the side away from the temporary storage container; the temporary storage container and downstream devices thereof are arranged in a bottom high-pressure container; and the temporary storage container separately communicates with the low-pressure container, the bottom high-pressure container and a pressure source through pressure balance pipelines. The problem that high-temperature melt is difficult to transfer from a low-pressure environment to a high-pressure environment is solved.

The invention discloses a device and a method for transferring pressure to downhole electronic components by pressure transfer media. The device comprises an outer casing arranged in a downhole fluidhaving hydrostatic pressure. At least one cavity filled with the pressure transfer media is formed in the outer casing, the downhole electronic components are fixed into the pressure transfer media inthe cavities, the outer casing is provided with openings in communication with the cavities, the openings are sealed with elastic shielding members, the outer walls of the elastic shielding members contact with the downhole fluid to receive the hydrostatic pressure of the downhole fluid, and the hydrostatic pressure is transferred to the electronic components through the pressure transfer media.Compared with the prior art, the device and the method have the advantages that the downhole electronic components can work stably in corrosive and vibratory impact environments with high temperatureand high pressure during the oil and gas drilling process.

The invention discloses a novel heat exchanging unit, which is mainly composed of a heat exchanger and an attemperator. An attemperator steam inlet tube and a cold water outlet and inlet tube are arranged on the upper part of the attemperator, and a heat exchanger water inlet, a heat exchanger steam inlet, a condensate water outlet and a heat exchanger water return opening are formed in the heat exchanger. High-temperature steam is subjected to heat exchanging in the attemperator firstly, at the moment, the temperature of the high-temperature steam is decreased correspondingly, then the high-temperature steam enters the heat exchanger to be subjected to heat exchanging, at the moment, the temperature of the steam entering the heat exchanger is effectively decreased, in this way, damage toa rubber pad is avoided, and thus the requirement for temperature resistance of the rubber pad is lowered.

The invention provides a wet-type electrostatic precipitator for waste gas treatment. The wet-type electrostatic precipitator comprises an acid-resistant and alkali-corrosion-resistant metal dischargeelectrode, a dust collection electrode, a high-voltage discharge circuit, a waste gas main pipe, a waste gas branch, a purified gas outlet and a dust collection cavity, wherein the waste gas branch is connected to the side wall of the waste gas main pipe through a control valve, and part of the metal discharge electrode is sleeved in the waste gas branch. According to the wet-type electrostatic precipitator, acidic and alkaline waste gas, water vapor and dust can be removed, and the discharge electrode is not prone to be oxidized or bonded with oil stain to lose the discharge function.

The invention discloses a duplex heat exchanger. The duplex heat exchanger is mainly composed of a plate heat exchanger and a desuperheater, a desuperheater steam inlet tube and a cold water inlet tube are arranged at the upper part of the desuperheater, an M-shaped steam heat exchanger tube and an M-shaped hot water heat exchanger tube are arranged in the plate heat exchanger longitudinally, an internal heat tube of the desuperheater is of a straight-array structure, and a heat exchanger water returning opening is used for being connected with a heating device water returning pipeline and connected with a desuperheater water returning opening through the M-shaped hot water heat exchanger tube, the desuperheater water returning opening is connected with a cold water inlet of an internal heat exchanger pipeline of the desuperheater through the water returning tube, a steam inlet of the desuperheater is connected with a heat exchanger steam inlet of the plate heat exchanger through a steam conveying tube, and the heat exchanger steam inlet is connected with a heat exchanger steam outlet through the M-shaped hot water heat exchanger tube. According to the duplex heat exchanger, once heat exchanging is conducted on the low temperature reflux water in the desuperheater, then enters the heat exchanger for heat exchanging, and finally discharged from the heat exchanger water returningopening, the whole equipment is of a twice heat exchanging structure, and the heat recovery rate can be up to more than 90%.