40results about How to "Reduced compression energy consumption" patented technology

The invention relates to method and device for gasifying a multi-segment staged converted fluidized bed. The method comprises the following steps of: supplying coal; supplying gas; gasifying; slagging; and conveying fine powder. The device for gasifying the multi-grade staged converted fluidized bed comprises an agglomerating ash separating unit, a pyrolyzing and gasifying reactor of the multi-segment staged fluidized bed and a semicoke fine powder cyclic feeding unit. The invention has the advantages of high volume utilization rate of a gasifying oven, great handling capacity and high utilization rate of total carbon, is suitable for a coal staging and converting system and can be singly used for producing gas for mass coal-based methane synthesis and coal chemical industry.

The invention provides a hydrogen separation membrane embedded improved copious cooling liquefying system aiming at an STAR propane dehydrogenation process, and belongs to the technical field of petrochemical engineering. According to the system, starting from the composition characteristics of dehydrogenation reaction products, a hydrogen membrane separation unit is introduced behind a shallow cooling unit, most hydrogen is separated through selective permeation of a membrane, then pressurizing and copious cooling liquefying are further carried out, and propane and propylene are further separated from remaining non-condensable components. By means of the hydrogen membrane separation unit embedded improved copious cooling liquefying system, compression loads can be remarkably reduced whilehigh-concentration hydrogen is obtained, the total compression energy consumption can be reduced by 8-24%, the heat exchange load of a copious cooling unit can be reduced by 80-86%, the purity of thebyproduct hydrogen can be increased from 82 mol% to 99 mol%, and the requirements of hydrogen consumption devices such as hydrocracking devices in the refinery enterprise are met. Under the optimum working condition, by means of the 350,000-ton STAR process, 1020 kW of the compression energy consumption can be reduced, and 16,198 Nm<3> / h of qualified hydrogen is output.

The invention discloses a method for preparing a hydrocarbon mixture by using one-step methanol conversion in an adiabatic fixed bed reactor. The method comprises the following steps: mixing a raw material methanol with process water from a separator, performing heat exchange with one part of material at the reactor outlet for gasifying, mixing with dried circulating gas, carrying out a reaction for preparing the hydrocarbon mixture based on methanol conversion in the adiabatic fixed bed reactor filled with a ZSM-5 molecular sieve catalyst; dividing the material at the outlet of the adiabatic fixed bed reactor into three parts, collecting the three parts together after heat exchange; performing further cooling, and feeding into an oil-water-gas three-phase separator; and separating to obtain an oil-phase product, namely the hydrocarbon mixture. The method disclosed by the invention has the advantages of small gas cycle ratio and low operating energy consumption and is suitable for large-scale production.

The electrocatalytic synthesis reactor relates to a chemical synthesis reactor, which is mainly composed of a gas distribution chamber, a tube-and-tube electrocatalysis chamber, a collection chamber, a product outlet, a coolant chamber, and a shell, wherein: the raw material gas inlet is from the gas distribution chamber The gas distribution chamber is connected to the collection chamber through the tubular electrocatalytic chamber, and the product outlet is connected from the bottom of the collection chamber. Each electrocatalytic chamber of the tubular electrocatalytic chamber is composed of the inner space of the outer electrode tube bundle, and each There is a central electrode in the electrocatalytic chamber, and the periphery of the outer electrode tube bundle is a coolant chamber. The synthesis reactor adopts low-temperature plasma and catalyst synergistic catalysis to carry out the synthesis reaction, so that the synthesis reaction can be carried out at close to normal pressure, and the raw material gas can enter the synthesis reactor without being compressed, so the required energy consumption is extremely low, and it also has selectivity Good and easy to control the reaction speed, input the raw material gas of the corresponding target product and select the corresponding catalytic electrode or catalyst to produce methanol, dimethyl ether, synthetic ammonia and other chemical products.

The invention relates to a coal-fired power generation system deeply and integrally provided with a system for desulfurizing and decarburizing a calcium-based sorbent in sequence. A heat source of a finishing superheater and a heat source of a low-temperature reheater are replaced with heat discharged from a carbide furnace, high-temperature smoke of an outlet of a high-temperature reheater outlet of an original standard system is cooled through a first heat exchanger and then directly enters a vulcanization reactor to be desulfurized, and CaSO4 is discharged; the heat discharged due to heat exchange of the first heat exchanger and heat discharged from a reaction in a sulfuration reactor are used for heating a calcinator; and remaining CaO after desulfurizing is conducted and inactivated CaO discharged from the calcinator are recovered and enter a hydration reactor to be subjected to hydrate activation and then enter a desulfurizing circulation, the desulfurized smoke enters the carbide furnace to be decarburized, waste heat of the smoke with lean CO2 of an outlet of the carbide furnace is recovered through an economizer and an air preheater, partial heat discharged from the carbide furnace is provided to heat the economizer and the air preheater to maintain the design parameters of an original power plant unchanged, the heat discharged from the hydration reactor and remaining heat after the heat load is replaced with the carbide furnace are recovered by a waste heat boiler module to be used for generating steam for acting.

The invention discloses a process for producing medium-pressure nitrogen with low energy consumption. The devices required for the production include filters, turbine air compressors, air pre-cooling units, molecular sieve adsorbers used alternately, electric heaters, and main heat exchangers. Refrigerator, cryogenic refrigerator, rectification column I, main condensing evaporator I, rectifying column II, main condensing evaporator II, booster turboexpander, booster turboexpander booster aftercooler, circulating nitrogen pressure machine, circulating nitrogen compressor aftercooler, liquid nitrogen pump, subcooler. Using the process of the invention to produce medium-pressure nitrogen has high extraction rate and low device energy consumption.