34results about How to "Raise the starting temperature" patented technology

The invention relates to a preparation method of a lightweight polypropylene material. The preparation method includes the steps: (1) uniformly mixing sodium bicarbonate and citric acid to obtain a micro-porous foaming agent for polypropylene; (2) wrapping the micro-porous foaming agent for the polypropylene by silicone oil to obtain a micro-porous foaming agent for organic silicon wrapped polypropylene; (3) uniformly mixing the micro-porous foaming agent for the organic silicon wrapped polypropylene, the polypropylene, fillers, antioxidants, heat stabilizers and microcapsule erythritol to obtain a finished product. According to the method, the citric acid and the microcapsule erythritol are added, the initial thermal decomposition temperature of the sodium bicarbonate is improved, a decomposition temperature interval is reduced, foaming effects are improved, an erythritol material is an excellent middle temperature phase-change material, and phase-change temperature is 119-124 DEG C.When the temperature rises to exceed the phase-change temperature, phase-change of the erythritol is implemented, heat is slowly absorbed/temperature rise is prevented, so that thermal decomposition of the sodium bicarbonate serving as a foaming agent is delayed, and foaming effects are improved.

The invention discloses a livestock and poultry waste harmless sterilization waste heat recovery device. The waste heat recovery body is provided with an air inlet, a first air outlet, an atmosphere inlet and a second air outlet. Two ends of an air outlet pipeline are respectively communicated with a fermentation tank and the air inlet; an ozone generator is arranged in the waste heat recovery main body; one end of an induced draft fan is communicated with the first air outlet, and the other end of the induced draft fan is communicated with a chimney pipeline; a finned tube is arranged in thewaste heat recovery main body; the finned tube is communicated with the atmosphere inlet; and the second air outlet is communicated with the fermentation tank. Through the arrangement of the structure, heat energy generated by fermentation of the livestock and poultry waste harmless treatment equipment can be recycled, secondary pollution of the air is avoided through ozone deodorization treatment, and energy is saved.

A multilayer ceramic capacitor that includes outer electrodes and a multilayer body having stacked inner electrode layers and dielectric layers. The dielectric layers in an effective section contain, relative to 100 parts by mole of Ti, 0.7 to 1.2 parts by mole of Si, 0.9 to 1.1 parts by mole of Dy, 0.24 to 0.34 parts by mole of Mg, 0.17 to 0.23 parts by mole of Al, 0.09 to 0.11 parts by mole of Mn, and 0.04 to 0.06 parts by mole of V. The dielectric layers have a Ba/Ti molar ratio of 1.0073 to 1.0083.

The invention discloses a high temperature resistant cross-linked polyolefin foamed material and a preparation method thereof. The raw materials include, by weight, 60-90 parts of polyolefin resin, 2-20 parts of a foaming agent and 0.1-10 parts of processing aids. Specifically, the polyolefin resin includes polyolefin resin with a maximum crystallization rate temperature T_(c, max) of lower than or equal to 100DEG C, and the polyolefin resin with the maximum crystallization rate temperature T_(c, max) of lower than or equal to 100DEG C accounts for more than or equal to 40% of the mass fraction of the polyolefin resin. The preparation method includes: mixing polyolefin, the foaming agent and the processing aids; performing melt extrusion into sheets; then subjecting the sheets to high-energy electron irradiation crosslinking treatment; and then heating the irradiated sheets, conducting foaming by a foaming furnace, then carrying out cooling shaping, and performing rolling-up. The cross-linked polyolefin foamed material provided by the invention increases the difference of temperature in a tensile zone and the crystallization temperature in the foaming process, and can increases thestarting temperature of heat shrinkage produce by the material and reduce the heat shrinkage rate.

The invention discloses a full-automatic low-energy-consumption warming system of a greenhouse. The full-automatic low-energy-consumption warming system comprises an electric temperature control circulating water pump, a water conveying pipe, heat radiation sheets and an automatic warming device with a heat preservation function, wherein the automatic warming device is provided with a liquid capacity cavity, a water outlet and a water inlet; the water outlet of the automatic warming device, the electric temperature control circulating water pump, the plurality of heat radiation sheets and the water inlet are connected in sequence by the water conveying pipe to form a heat-transfer cycle loop; heat absorption coatings coat the outer parts of the heat radiation sheets. The starting temperature of repeatedly heating a heat transfer medium is very high through the heat preservation function of the automatic warming device and the heat absorption function of the heat radiation sheets coated with heat absorption materials, so that the energy consumption is extremely saved, the energy efficiency is high and the warming cost is saved. Overall, the full-automatic low-energy-consumption warming system has the advantages of energy conservation, environment friendliness and no pollution, uniformity in warming, low cost and high energy efficiency, full-automatic warming, water conservation, and flexibility and convenience for setting, and can be widely popularized and applied.

The invention relates to a waste heat recovery system, a boiler system and a waste heat recovery method. The waste heat recovery system comprises a first heat exchanger and a second heat exchanger which are sequentially arranged in a flue, wherein the first heat exchanger is an air-water heat exchanger made of a common material; the second heat exchanger is an air-water heat exchanger made of a corrosion-resistant material; a plate-type third heat exchanger is arranged between the two heat exchangers; a first heat exchange medium sequentially flows through the second heat exchanger, the third heat exchanger and the first heat exchanger, exchanges heat with the flue gas in the second heat exchanger and the first heat exchanger and exchanges heat with steam introduced into the boiler system in the third heat exchanger; a temperature control module is arranged to control the temperature of a first heat exchange medium in the first heat exchanger to be within a set temperature range slightly higher than the dew point temperature, so that water vapor in the flue gas cannot be condensed on the surface of the first heat exchanger and can be concentrated on the surface of the second heat exchanger; and good corrosion resistance is achieved on the premise of efficient heat exchange, and the overall cost is low.

The invention discloses a pig manure fermentation site construction and fermentation method, and belongs to the technical field of pig manure fermentation. The pig manure fermentation site construction and fermentation method comprises the following steps: pouring the ground of a pig manure stacking field to form an inclination of 5 degrees, building a small ditch with the width of 25cm and the depth of 20cm at the edge of the lower side of the ground, so that pretreated material exudate flows into a urine storage tank through the small ditch, urine leached from pig manure is effectively discharged, and the situation of mildewing during fermentation is prevented; determining the construction size of a fermentation workshop of a ten thousand pig farms to be 20-30m long, 7.5-8m wide and 3.5mhigh, selecting a sunshine plate as a cover top, so that the room temperature in the fermentation workshop is increased after penetrating of solar heat energy through the sunshine plate, increasing of the initial temperature of fermentation materials is accelerated, wherein ventilation holes are reserved in the top so that gas such as water vapor generated during material fermentation can be dissipated and exhausted.

The invention discloses a preparation method of phenolphthalein allyl amine-type benzoxazine/polyurethane blend resin. The preparation method comprises the following steps of: synthesising phenolphthalein allyl amine-type benzoxazine by virtue of a solvent method at first, and then synthesising the polyurethane prepolymer of phenol-blocked-NCO; dissolving the phenolphthalein allyl amine-type benzoxazine and the polyurethane prepolymer of phenol-blocked-NCO in acetone; adequately stirring to uniformly disperse the phenolphthalein allyl amine-type benzoxazine and the polyurethane prepolymer of phenol-blocked-NCO; performing vacuum drying treatment; and then performing program curing to obtain the blend resin. According to the preparation method, the brittleness of benzoxazine is improved by virtue of the good low temperature flexibility and processability of the polyurethane prepolymer, thus improving the processability of benzoxazine; and moreover, polyurethane can form a cross-linked network shape with benzoxazine during curing, thus increasing the cross-linking degree of benzoxazine, and then improving the thermodynamic property of benzoxazine to a certain extent.

The acetic acid cracking device comprises a preheating section and a cracking section, the preheating section is composed of a preheating cavity and a first heat supply jacket, the bottom of the first heat supply jacket is connected with a natural gas inlet pipe and an air inlet pipe, and the lower section of the preheating cavity is connected with a metering pump and an acetic acid evaporator; the cracking section comprises a cracking cavity and a second heat supply jacket, the upper end of the cracking cavity is connected with a condensation pipe, and the bottom of the cracking cavity is communicated with the preheating cavity through a connecting pipe; a natural gas supplementing pipe and an air supplementing pipe are arranged at the lower end of the second heat supply jacket, a waste gas discharging pipe is arranged at the upper end of the second heat supply jacket, and the second heat supply jacket communicates with the first heat supply jacket through two symmetrically-arranged second connecting pipes. According to the invention, the problem of high energy consumption of the ketene process is solved, the mode of combining the first heat supply jacket and the second heat supply jacket is utilized, heat in the first heat supply jacket is fully utilized, the initial temperature of the second heat supply jacket is increased, and the use amount of natural gas is reduced.

The invention discloses a formaldehyde byproduct steam tail gas processor. The formaldehyde byproduct steam tail gas processor comprises a processor body; the processor body is provided with a hot water section, an upper tail gas air preheating section, a middle heat exchange section and a bottom combustion section in sequence from top to bottom; the upper tail gas air preheating section is provided with a preheating front air inlet at the upper part of one side and a preheating back air outlet at the lower part; the upper tail gas air preheating section is provided with a preheating front tail gas inlet at the upper part of the other side and a preheating back tail gas outlet at the lower part; a steam exhaust port is formed in the upper part of one side of a middle heat exchange section,and a hot water inlet is formed in the lower part; an air inlet is formed in one side of a bottom combustion section; and a tail gas inlet is formed in the other side of the bottom combustion section. Compared with the prior art, the formaldehyde byproduct steam tail gas processor adopts automatic operation without needing special operators, and is convenient to operate.

The invention provides a backflow preheating water supply system, which is characterized in that a water tank of the water supply system supplies water to a balanced reservoir through a water pump and supplies water to a water outlet switch and a heater from the balanced reservoir through the water pump, the water pump is directly communicated with the bottom of the balanced reservoir through a water feeding pipe, and the balanced reservoir is communicated with the bottom of the heater; the balanced reservoir comprises a backflow cavity and a water level balance cavity; the backflow cavity is arranged on an overflow port at the top of the heater and is communicated with the overflow port; wherein the horizontal height of the water level balance cavity is equal to that of the heater, a first water level baffle is arranged in the water level balance cavity, and the first water level baffle is divided into a first area and a second area; and the height of the first water level baffle is lower than that of the overflow port in the horizontal direction. According to the backflow preheating water supply system provided by the invention, multiple preheating backflow can be completed, heated water flows back to the reservoir, meanwhile, the initial temperature of the reservoir is increased in a repeated backflow mode, boiling and expanding water in the heater can only enter the backflow cavity through the overflow port of the heater, it is guaranteed that outlet water is really boiling water, and the temperature is higher.