324results about How to "Promote gasification" patented technology

A preparation method of graphene oxide/ silicon dioxide hybrid aerogel comprises the following steps: A, adding 0.05-0.1 mol of a precursor into 9-18 ml of distilled water and dropwise adding a hydrolyst with its concentration of 0.2-0.6 mol/L into the precursor aqueous solution, wherein molar ratio of the hydrolyst to the precursor is 1:20-1:100; stirring at 20-30 DEG C for 5-8 h; adjusting pH value to 6-7 and stirring for 5-45 min so as to obtain a dispersion containing silicon dioxide microspheres; B, adding water to dilute the silicon dioxide microsphere dispersion by 5-50 times, carrying out iso-volume mixing on the diluted silicon dioxide microsphere dispersion and a graphene oxide dispersion with its concentration being 0.6-2 mg/ml, stirring for 10-30 min, carrying out ultrasonic treatment for 10-30 min so as to obtain graphene oxide/silicon dioxide hybrid aerogel; and C, freezing the hybrid aerogel under liquid nitrogen for 5-10 min, freeze-drying and dewatering to obtain the graphene oxide/silicon dioxide hybrid aerogel. The method is environmentally friendly, and the technology is simple. The prepared hybrid aerogel has advantages of complete gel network structure, high porosity, good adsorptivity, high strength, low density and the like.

The invention provides a heat pump system control method and a heat pump system. The heat pump system comprises a compressor, an outdoor heat exchanger, a four-way reversing valve, a gas-liquid separator, and a heating device for heating the gas-liquid separator. The four-way reversing valve has a first state when the heat pump system is in refrigeration operation and a second state when the heatpump system is in heating operation. The control method comprises the step of after switching on the compressor, and before switching the first state of the four-way reversing value to the second state, controlling the heating device according to a state parameter of a refrigerant in the outdoor heat exchanger. The heating device is used for heating a refrigerant in the gas-liquid separator so asto promote refrigerant gasification, the refrigerant entering the four-way reversing valve from a gas outlet of the compressor is at a gas state, and a liquid-state refrigerant cannot be accumulated in the four-way reversing valve, so that the occurrence of the phenomenon of liquid impact caused when the four-way reversing valve reverses after starting up at a heating mode is avoided, and the four-way reversing valve is prevented from being damaged by liquid impact.

The invention relates to a solid fuel decoupled fluidized bed gasifying method and a gasifying apparatus. By physically separately performing drying and pyrolyzing of fuel, gasification of char, and tar/hydrocarbon reforming, the interactions between the separated chemical reactions and physical processes during fluidized bed gasification can be utilized. Specifically, in a fluidized bed reactor having two reaction chambers, drying and pyrolyzing of fuel, gasification of char, and tar/hydrocarbon reforming are performed, respectively, the reforming of tar/hydrocarbon is promoted through the catalytic effect of the char, and the evaporated fuel moisture is provided to the char gasification and tar/hydrocarbon reforming as an effective reaction agent. Accordingly, the tar content in product gas can be reduced, the use amount of external steam can be reduced, the overall efficiency of gasification can be improved, and this technique can also be applied to the processing of high water-containing fuel. This gasifying method not only can be applied to individual fluidized bed gasification, but can contribute to the design of a combustor that combusts unreacted char, and to advanced decoupled fluidized bed gasification.

In a method for manufacturing an electronic device, an ion implantation layer is formed at a desired depth from one principal surface of a piezoelectric single crystal substrate by implanting hydrogen ions into the piezoelectric single crystal substrate under desired conditions. The piezoelectric single crystal substrate in which the ion implantation layer has been formed is bonded to a supporting substrate, and a piezoelectric thin film is then formed by the application of heat using the ion implantation layer as a detaching interface. This heated detachment is performed at a reduced pressure less than atmospheric pressure and at a heating temperature determined in accordance with the reduced pressure.

The present invention includes a gasifier for gasifying fuels having a container with a top, sidewalls and a bottom for facilitating the gasifying process. One or more open vertical shafts extend downward inside the container for allowing a downdraft or updraft of air and fuel for the gasifying process. A rotating bed is preferably included inside the container and below the one or more shafts for receiving the fuel. The bed rotates essentially perpendicular to the shaft to facilitate even heating and gasifying of the fuel.

The invention relates to extracting and drying methods in the process for preparing uhmwpe fiber, belonging to the field for polymers preparing technology. The method comprises that the uhmwpe powder, assistant and solvent is solidified by extruding after they are mixed in uniformity and solved sufficiently; the solvent is eliminated in extracting process and the extraction agent is eliminated by drying technology; the final product is formed by heat drawing. It is characterized in that because dichloromethane is used as the extraction agent, there is good safety, low boiling point and it is eliminated easily. Because countercurrent extraction operation is adopted in the extracting process and there is no ultrasonic wave, it is provided with low drying temperature, simple technology, high intensity of fiber product, high modulus and low oil percentage of fiber.

A nanoalloy catalyst, dual catalyst and methods for improving the efficiency and output of a biomass gasification process are provided where the catalysts comprise a volatile organometallic compound(s) and/or a nanoalloy catalyst. The subject nanoalloy catalyst cracks and gasifies lignin, which is generally inert in conventional gasification, at relatively low gasification temperatures. The subject disclosure also provides a means to increase gas yields and lower lignin content in the resulting product relative to conventional gasification. Alternatively, oil production may be increased, if desired. Moreover, the resulting gas may achieve a Fischer-Tropsch reactor favorable H₂:CO ratio of up to about 9:1. The energy input to the gasification is correspondingly reduced to reduce costs and the environmental impact associated with the gasification process.

The invention relates to the technical field of microcrystalline graphite purification, and discloses a process for preparing high-purity microcrystalline graphite with low energy consumption and in alarge scale, and the high-purity microcrystalline graphite. According to the process, microcrystalline graphite raw ore is firstly crushed and ground, and flotation including one time of roughing, four times of cleaning and one time of scavenging is performed in match to increase the purity of the raw ore to the utmost through a physical method; an improved acid leaching purification method is adopted, the alkali leaching efficiency is increased, energy consumption is reduced, and the graphite recovery yield is increased; and finally a high-temperature purification method adopting a step-by-step heating manner is utilized to further reduce energy consumption for graphite purification, and the high-purity microcrystalline graphite the fixed carbon content of which is 99.993% or above can be finally obtained. The process overcomes a problem that microcrystalline graphite in the prior art is not high in purity, high in energy consumption and high in cost. Through improvements on the prior art, the process achieves an objective of reducing energy consumption and the cost, and achieves industrial production.