10results about How to "Reduced Compression Power Consumption" patented technology

The invention relates to the technical field of energy storage, and discloses a constant-pressure compressed air energy storage device and an energy storage system.The constant-pressure compressed air energy storage device is characterized in that an energy storage library is divided into a first closed cavity and a second closed cavity by a flexible air bag; first fluid is stored in the second closed cavity; the interior of the flexible air bag is communicated with the second closed cavity; during energy storage, compressed air enters the first closed cavity, the flexible air bag is compressed, the size of the first closed cavity is increased, the first fluid in the second closed cavity is compressed and liquefied, and temperature rise and pressure rise of the compressed air are relieved; during energy release, the first fluid is heated, the first fluid absorbs heat to be gasified and transfers heat to the compressed air, the flexible air bag expands, the size of the first closed cavity becomes small, and air is exhausted. During energy storage, gas storage is approximate to constant pressure, temperature and pressure increase of the first closed cavity is slowed down, more air is stored, and power consumption is reduced; and during energy release, temperature and pressure reduction is relieved, approximate constant pressure is achieved, and output air energy is increased.

The invention provides a hydrogen storage and supply system suitable for wide-range pressure fluctuation and a control method thereof, and relates to the technical field of hydrogen storage and supply. In wind-solar power generation coupling hydrogen production and hydrogen utilization projects, in order to make full use of the buffering capacity of a hydrogen storage tank, the designed hydrogen storage tank is generally wide in pressure fluctuation range and low in hydrogen storage pressure lower limit, and therefore the problems that the designed inlet pressure of a downstream compressor unit of the hydrogen storage tank is low, and compression power consumption is large are solved. By designing a plurality of decompression pressure grades and a plurality of hydrogen supply lines which can be switched along with the pressure change of the hydrogen storage tank, the effects of fully utilizing the capacity of the hydrogen storage tank and reducing the compression power consumption of the compressor unit can be simultaneously realized.

This application provides a vertical heat recovery coke oven waste heat exchange unit, waste heat utilization system, and method, using supercritical carbon dioxide as the heat exchange medium. The unit includes a main compressor, a regenerator assembly, a high-pressure turbine, a low-pressure turbine, a precooler, and a heat exchanger. The heat exchanger internally houses a high-temperature superheater, a high-temperature reheater, a low-temperature superheater, a low-temperature reheater, an air-cooled wall, and an economizer. The main compressor outlet is connected to the cold-side inlet of the regenerator assembly, and the cold-side outlet of the regenerator assembly is connected to the working fluid inlet of the heat exchanger. The working fluid flows sequentially through the economizer, the air-cooled wall, the low-temperature superheater, and the high-temperature superheater before entering the inlet of the high-pressure turbine. The high-pressure turbine outlet is connected to the inlet of the low-temperature reheater, the low-temperature reheater outlet is connected to the inlet of the high-temperature reheater, and the high-temperature reheater outlet is connected to the inlet of the low-pressure turbine. The low-pressure turbine outlet is sequentially connected to the hot side of the regenerator assembly, the precooler, and the main compressor inlet.

The multistage compressed air energy storage system comprises a salt cavern air storage chamber, the inlet end of the salt cavern air storage chamber is connected with a multistage compression device and a first heat exchanger, and the outlet end of the salt cavern air storage chamber is connected with a multistage expansion power generation device and a second heat exchange device. The heat storage liquid outlet end of the first heat exchanger is connected to the heat storage liquid inlet end of the first heat exchanger through the high-temperature tank, the second heat exchange device and the low-temperature tank; the salt cavern gas storage chamber and the high-temperature tank are respectively connected with a pressure potential energy-heat energy coupling conversion device based on a Ponghua material, and the pressure potential energy-heat energy coupling conversion device is used for releasing heat energy when the pressure is increased and absorbing the heat energy when the pressure is reduced. When the compressed air energy storage system needs to store energy across months and even seasons, excess compressed air potential energy is converted into heat energy through the pressure-heat conversion device, so that potential energy output is improved, and the efficiency and economical efficiency of the system are improved.

The invention relates to a solid biomass pressurized gasification process. The process comprises the following steps: adding solid biomass into a reactor; gas and fluidizing gas required by biomass gasification reaction are controlled by the gas inlet unit and then enter the reactor; high-temperature ash slag from the reactor is cooled through the slag discharging unit and then is conveyed to the normal-pressure equipment; in the waste heat recovery unit, the synthesis gas is subjected to heat exchange in three stages; the synthesis gas from the waste heat recovery unit enters the dust removal unit for gas and particle separation, and the synthesis gas subjected to particle separation enters the water washing cooling unit; particles separated and captured by the dust removal unit are sent back to the reactor through the fly ash furnace returning unit; and the synthesis gas from the dust removal unit is cooled in the water washing cooling unit and then is sent to a downstream device. According to the solid biomass pressurized gasification process provided by the invention, the temperature of the reactor upper section is higher than that of the reactor lower section, and the tar generated in the reactor lower section is further converted in the reactor upper section, so that the tar content in the synthesis gas at the outlet of the reactor is effectively reduced.

This invention discloses an energy-saving ammonium chloride evaporation crystallization system and process. The system includes a feed preheating unit, a first-effect falling film evaporation unit, a second-effect falling film evaporation unit, and a forced circulation evaporation crystallization unit connected sequentially along the feed liquid flow direction. It also includes a falling film scrubbing tower, a forced circulation scrubbing tower, and a three-stage compressor. The forced circulation secondary steam, after scrubbing, enters the first-stage compressor. The second-effect secondary steam, after scrubbing, bypasses the first-stage compressor and merges at the outlet side of the first-stage compressor. It is then compressed in the second and third stages and reused for the first-effect falling film evaporation and forced circulation evaporation crystallization. This process, by setting the falling film evaporation to double-effect, only compresses the second-effect and forced circulation secondary steam; by using the first-stage compressor to separately increase the temperature rise of the forced circulation secondary steam, compensating for its high boiling point rise, it merges with the second-effect steam and is then compressed in the second and third stages for reuse. Since the boiling point rise in the falling film section is low, the second-effect steam only requires two stages of compression to meet the heat transfer temperature difference. This effectively reduces the amount of gas passing through and power consumption, and improves stability.

The utility model provides a carbon capture and compression system based on comprehensive utilization of waste heat and LNG (Liquefied Natural Gas) cold energy. The carbon capture and compression system comprises a flue gas cooler, an absorption tower, a rich liquid diverter, a lean and rich liquid heat exchanger, a regenerated gas heat exchanger, a flash steam compressor, a regeneration tower, a reboiler, a two-stage compressor, a multi-stream heat exchanger and a carbon dioxide condenser. A pregnant solution diverter and a regenerated gas heat exchanger are used for recycling waste heat of regenerated gas at the top of the regeneration tower to heat pregnant solution, and sensible heat and latent heat of absorbent regeneration are reduced; the cold energy of liquefied natural gas can be used for liquefying carbon dioxide under intermediate pressure, the compression stage number and compression power consumption of the carbon dioxide are reduced, the multi-stream heat exchanger is used for recovering the compression heat of the carbon dioxide for heating condensate water, the using amount of latent heat and cooling water is further reduced, and the energy consumption is reduced. And full recovery of waste heat in a chemical absorption method carbon dioxide capture and compression system and efficient utilization of liquefied natural gas cold energy are achieved, and the energy utilization efficiency and economical efficiency of the system are improved.

This invention discloses a multi-energy synergistic S-CO2 energy storage system and method suitable for industrial parks, relating to the fields of supercritical carbon dioxide energy storage and comprehensive energy utilization in industrial parks. The system includes an energy storage, pressure stabilization, and temperature control subsystem; a compression heat storage subsystem; a multi-energy cascade heat replenishment subsystem; and an expansion work and regeneration subsystem. Through pressure stabilization and temperature regulation of the low-pressure working fluid followed by compression energy storage; primary heat replenishment during the energy release phase after compression heat storage; secondary heat replenishment using an S-CO2 heat pump unit to upgrade low-grade waste heat in the park; and preheating and tertiary heat replenishment using a main regenerator and a solar-powered molten salt heat storage unit, the working fluid enters the main expander unit to generate electricity. Through synergistic regulation, heat source fluctuations and temperature and pressure disturbances are suppressed, maintaining the working fluid in a supercritical stable operating state throughout the process. This invention enables efficient electrical energy storage and release, multi-grade heat energy cascade utilization, and coordinated operation of power supply and heating in the industrial park.

The utility model discloses energy -saving screw rod air compressor admission valve, including valve body, be equipped with the air inlet channel in the valve body, be provided with the air inlet and the air outlet of air inlet channel intercommunication on the valve body, rotatably be provided with the flap at the air inlet, the flap transmission has the cylinder, the cylinder is double pneumatic control cylinder, and the cylinder is used for controlling the rotation angle of flap, and then realizes the control admission of air inlet channel's air inlet opening degree. Its cylinder is double pneumatic control cylinder, and the extension length of piston rod is controlled through the air pressure difference between first chamber and second chamber, and then realizes the control admission of air inlet channel's opening degree, makes the admission amount can according to air compressor actual operation load and system gas demand and carry out the matching. The structure design can avoid the extensive control defect of traditional admission valve " full open or full close ", reduces the admission channel opening degree when the system low load operation, reduces the redundant admission amount, avoids the waste of compressed gas from the source, significantly reduces the air compressor no -load energy consumption and compression power consumption.

The invention relates to the technical field of fuel cell application, and discloses a superspeed magnetic suspension air compressor for a fuel cell, the superspeed magnetic suspension air compressor for the fuel cell comprises a shell and a power assembly, the power assembly is located in the shell, two sides of the shell are respectively provided with a gas inlet end for compressing gas and an expansion end for utilizing waste gas, and the expansion end is located in the shell. A clamping frame, an integrated bearing seat, a first fixing piece, a second fixing piece, a mounting ring, a third fixing piece, a radial magnetic bearing seat and a connecting frame are sequentially fixed to the circumferential inner wall of the shell from left to right through bolts, the mounting ring is located in the center of the shell, and a plurality of evenly-distributed stators are bonded to the circumferential inner wall of the mounting ring. Detection mechanisms used for detecting the rotating position of the power assembly are arranged between the clamping frame and the integrated bearing seat and between the radial magnetic bearing seat and the connecting frame correspondingly. Through coaxial arrangement of the compression wheel and the expansion wheel, exhausted waste gas acts on the expansion wheel, energy of gas flowing in the waste gas is recycled, the compression power consumption is reduced, and the compression efficiency is improved. And higher efficiency is realized.