46results about How to "Improve energy grade" patented technology

The invention discloses an energy storage composition. The energy storage composition comprises the following components in parts by weight: 0.5 to 15 parts of common silicate cement, a rigid crystal material comprising 20 to 60 parts of basalt, 20 to 30 parts of river sand, a heat conduction modifier comprising 1 to 10 parts of graphite, an expansion coefficient modifier comprising 1 to 6 parts of rare earth oxides, and 0.2 to 5 parts of enhancer. The embodiment also provides a preparation method of the energy storage composition. The invention also provides a preparation method and applications of the energy storage composition. A solar energy storage module made of the energy storage composition has the advantages of large energy storage capacity, high energy storage temperature, and low manufacture cost, under the situation that the module strength is guaranteed, and the seasonal high efficient storage of solar energy is realized.

The invention relates to a method for separating acetic acid from water by an acetic acid dehydration tower, which mainly solves the problems of high energy consumption and high equipment manufacturing cost in an acetic acid dehydration process in the prior art. In the invention, distillation and dehydration are carried out by pressurizing the acetic acid dehydration tower, water is used as a heat exchange medium in heat pump circulation, the heat released by condensing the discharged material at the top of the acetic acid dehydration tower is absorbed by a heat exchange medium in a closed heat pump process, the heat exchange medium after absorbing the energy of the discharged material at the top of the tower is compressed by a compressor so as to raise temperature, the high-temperature superheated steam is firstly desuperheated by a desuperheater to form saturated steam, and then the saturated steam is transferred into a tower kettle reboiler to carry out heat exchange with the discharged material at the bottom of the tower; and the steam subjected to heat exchange in the tower kettle enters a gas-liquid separation tank after throttling decompression, the separated liquid phase enters a condenser at the top of the tower to carry out heat exchange, and the separated gas phase is mixed with the gas at the outlet of the condenser at the top of the tower to enter the compressor, thereby being used for carrying out heat exchange again with the tower kettle. The technical scheme provided by the invention better solves the problems and can be applied to industrial production for separating acetic acid from water.

The invention relates to a multiple-effect drying technology which is characterized in that air serves as drying medium and directly contacts with material to be dried to take away moisture and provide heat; multiple stags of drying chambers connected with a heater and a heating device are connected in series to form a simulated moving bed operation mode; air lead out of the last stage is subjected to heat exchange by an air heat exchanger to heat dry medium of the last but one stage; air led out of the last but one stage is subjected to heat exchange by the air heat exchanger to heat the drying medium of the last but two stage; and the rest can be deduced by analogy. The multiple-effect drying technology has the advantages of energy saving and high efficiency, is efficient and quick and is simple to manufacture.

The invention provides a method for preparing liquid alkane fuel by upgrading bio-oil in an aqueous phase catalytic mode. The method comprises the following steps of: 1) pretreating the bio-oil to obtain a water-soluble component and a water-insoluble component; 2) performing a pressurized acid hydrolysis process on a furan compound of the water-insoluble component to prepare the furan compound; 3) performing a reforming and hydrogen production reaction on the water-soluble component; 4) mixing the furan compound with a liquid-phase product separated from the step 3) to perform an aldol condensation reaction to increase carbon chains; and 5) performing a hydrogenation and dehydration reaction on an aldol condensation product to obtain liquid linear alkane. The method has the advantages that: an upgrading process, which is performed in a double-phase system, can effectively contribute to the desorption of an intermediate product from the surface of a catalyst and the mass transfer of an upgraded product, and can reduce the risk of carbon deposition on the surface of the catalyst; the quality of oil obtained by the method is high; the energy density and the energy grade of the bio-oil are improved greatly; and the liquid alkane fuel can be obtained from all kinds of bio-oil so as to partially substitute for the conventional widely-used fossil gasoline and diesel oil fuel.

The invention provides a test method and device for half cell of fluid bed electrode direct carbon fuel cell. The method comprises the following steps: firstly, arranging a current collector and the mixture of carbon fuel and catalyst granules in a half cell; secondly, fixing a porous plate in a preset position, and sequentially adding an auxiliary electrode, a reference electrode and carbonate; then, introducing nitrogen gas into the half cell, heating the nitrogen gas to a preset reaction temperature, regulating the flow of the nitrogen gas, and introducing oxygen gas and carbon dioxide into the reference electrode to balance the gas; and finally, connecting to an external circuit to start experiment. The device for realizing the testing method is a half-cell reaction device and comprises a half-cell reactor and a gas preheater, two electric heating devices are respectively used for carrying out temperature control on the half-cell reactor and the gas preheater, and a rotatable support structure is used for supporting and fixing the half-cell reaction device and the electric heating devices and realizing the dumpage of molten carbonate in the half cell. By making full use of theadvantages of the fluid bed electrode and the direct carbon fuel cell, the performance of the cell can be improved.

The invention discloses a biomass fuel boiler and belongs to the technical field of boilers. The biomass fuel boiler disclosed by the invention mainly comprises a biomass inlet, a valve, a secondary air shunting pipeline, a secondary air pipeline, a slag discharge opening, an ash residue chamber, a vaporizing chamber, a grid plate, a solid material return pipe, a cyclone separator, a gasified gas collection pipeline, a premix burner, a combustion chamber furnace wall, a combustion chamber, a secondary high-temperature flue gas channel, a high-temperature flue gas chamber, a gasifying chamber and a secondary air chamber, wherein the grid plate is arranged at the bottom of the gasifying chamber, a baffle is arranged in the secondary air chamber. According to the biomass fuel boiler, biomass is gasified by virtue of intermediate temperature, and combustible gas generated through gasification can be combusted to release heat at a combustion section by virtue of a high-temperature oxygen-deficient combustion method, so that the combustion efficiency and the thermal efficiency are increased, the contradiction that chlor-alkali corrosion and slag-bonding are caused by high combustion temperature, tar generation and low energy utilization are caused due to low combustion temperature during the current biomass energy utilization process can be solved, and the high-efficiency, low-pollution and high-grade utilization of renewable energy sources can be realized.

The invention discloses a zero-carbon emission cogeneration system and method based on solar methanol decomposition synthesis cycle, belonging to the field of distributed energy. The invention uses solar energy to thermally decompose methanol to obtain carbon monoxide and hydrogen, and converts low-grade solar energy into high-grade chemical energy for storage. In a syngas internal combustion engine, carbon monoxide and hydrogen are combusted to produce carbon dioxide and water, and the rotating crankshaft drives a generator to generate electricity for power supply. The multi-stage waste heat generated by the system can supply heat demand, through absorption refrigeration device can supply cold demand, through organic Lang The Ken cycle device can use low-temperature waste heat to generate electricity. The load and the electrolyzer are powered by the photovoltaic device, and the electrolyzer electrolyzes the water generated in the syngas internal combustion engine to produce hydrogen, and re-synthesizes methanol with the carbon dioxide generated in the syngas internal combustion engine to realize the carbon cycle. This system inputs solar energy and outputs cooling and heating power without expensive energy storage equipment, high energy efficiency and zero carbon emissions.

The invention relates to a method for separating acetic acid and water, mainly solving the problems in the prior art that the energy consumption is high in acetic acid dehydrating process and equipment manufacturing cost is high. The technical scheme of the method is as follows: rectifying and dehydrating by adding pressure to an acetic acid dehydrating tower; using water as a heat-transfer medium during a heat pump cycle; absorbing heat released from condensation on materials discharged from the acetic acid dehydrating tower top by the heat-transfer medium in a closed heat pump flow; compressing the heat-transfer medium having absorbed the energy of the materials discharged from the tower top by a compressing machine, wherein the temperature of the medium is raised then; desuperheating the high temperature superheated steam by a desuperheating device to form saturated steam, and filling the steam in a tower kettle reboiler to exchange heat with the discharged materials from the tower bottom. The method with the above technical scheme better solves the problems in the prior art, and can be applied in industrial production for separating acetic acid and water.