36results about How to "Realize energy cascade utilization" patented technology

The invention discloses a method and a device for the whole process of thermochemical sulfur-iodine cycle hydrogen production. The present invention combines the Bunsen reaction section with HIx and H 2 SO 4 The two-phase separation section is coupled together, coupling the HIx purification section and the concentration section. h 2 SO 4 The high-temperature mixed gas of the decomposition tower is directly passed into the H 2 SO 4 In the concentration tower, under the condition of no external heat source, H 2 SO 4 A large amount of water in the solution vaporizes rapidly to achieve concentrated H 2 SO 4 The purpose of the solution: the high-temperature mixed gas continues to enter the downstream HIx purification and concentration tower, and a large amount of water in the HIx system is vaporized and taken away to achieve the purpose of concentrating the HI solution. H inclusion in HIx system 2 SO 4 Converted to SO in an oxygen-enriched environment 2 It is taken away to achieve the purpose of purifying the HI solution. After the hydrogen is separated in the condensation tower, the remaining iodine-containing liquid is reused and returned to the Bunsen reaction separation tower, which can reduce the investment and energy consumption of hydrogen production by more than 40% compared with the traditional sulfur-iodine preparation.

The invention discloses a flue gas decarbonization system and a flue gas decarbonization method for two-step regeneration of carbon dioxide. The flue gas decarbonization system is formed by coupling an alkylol amine and methanol mixed solution adsorption system with a two-step carbon dioxide regeneration system, wherein when the two-step carbon dioxide regeneration system works, two steps of removing methanol before regeneration and regenerating alkylol amine carbonate are carried out. In the step of removing methanol before regeneration, flue gas waste heat is utilized to provide a heat source to remove the methanol in rich liquor after adsorption; the regeneration process only aims at the alkylol amine carbonate; the energy consumption of sensible heat and evaporation heat are avoided; and the steam consumption of the thermal regeneration process is reduced. Two regeneration towers alternately implement removal of the methanol and regeneration of the alkylol amine carbonate by two sets of valve equipment, so that the continuous operation of a trapping system is ensured. According to the invention, both the flue gas waste heat and the condensation heat of methanol steam are utilized, the temperature of the regenerated carbon dioxide is reduced, the flue gas decarbonization of a power plant is efficiently implemented, and the flue gas decarbonization system and the flue gas decarbonization method for two-step regeneration of carbon dioxide have the characteristics of cleanness, high efficiency, energy saving, high decarbonization rate and the like.

The invention proposes an industrial waste liquid treatment system and method based on carrier gas extraction low-temperature mass transfer. The system includes an absorber connected to a condenser connected to a waste liquid circulation pump connected to an absorber The liquid distributor of the resolver and the internal heater of the absorber; the resolver, which is connected to the evaporator, and the evaporator is connected to the clean water pump, and the clean water pump is connected to the liquid distributer of the resolver and the internal cooler of the resolver; the air outlet of the absorber is connected to the resolver The air inlet of the resolver, the air outlet of the resolver is connected to the air inlet of the absorber, and the air channel between the air outlet of the resolver and the air inlet of the absorber is provided with a circulating fan and an adsorber. The invention can use air as the mass transfer medium to realize the migration of water in the industrial waste liquid under the condition of relatively low temperature. A series of pretreatment processes such as precipitation, oil removal, and pH adjustment required for liquid disposal.

The invention provides a system and a method for drying sludge through the waste heat of a gas turbine. The gas turbine is connected with a generator; a flue gas outlet of the gas turbine is communicated with a waste heat boiler; a steam outlet of the waste heat boiler is communicated with a steam turbine; the steam turbine is connected with the generator; a steam extraction pipe of the steam turbine is communicated with an inlet of a heated surface pipe of an internal thermal type fluidized bed dryer; an air outlet of an air heater is communicated with an air inlet of the internal thermal type fluidized bed dryer; wet sludge enters the internal thermal type fluidized bed dryer through a wet sludge pipe, flows outside the heated surface pipe, is dried and then is discharged into a dry sludge pipe from a discharging hole. Steam is produced through the flue gas waste heat of the gas turbine to push a steam turbine generator set to generate power, and the waste heat of the steam turbine is taken as a heat source for drying the sludge, so that gradient energy utilization is realized, the heat efficiency is high, and a peculiar smell is not discharged; the fluidization air of the fluidized bed dryer is preheated by hot water, so that the energy utilization rate is further improved, and the environmental problems of groundwater pollution and the like caused by sludge burying and soil utilization are effectively solved.

The invention provides a method and a device for preparing synthesis gas by biomass pyrolysis and gasification. The method comprises three stages of roasting at low temperature, catalytically gasifying at high temperature, and reforming through microwave; the three stages are respectively continuously performed in three relatively-independent spaces in a gasifying device, so as to obtain high-quality synthesis gas. The device comprises a double-shaft spiral pyrolysis reactor which is equipped with a roasting section at the front section, a gasifying section at the medium section, and a microwave assisting reforming section at the tail section; raw materials are fed into the double-shaft spiral pyrolysis reactor through a feeding device; the way of combining internal heat and external heat which are produced by smoke heat exchange, heat carried by a catalyst and microwave assisting heating is adopted to provide proper temperature of the three reaction stages to achieve staged pyrolysis and gasification; the produced gas is processed by a gas solid separator to obtain the synthesis gas; meanwhile, the deactivated catalyst and carbon coke and the like discharged by the reactor are fed into a combustion furnace to generate high-temperature smoke and regenerate the catalyst. With the adoption of the method and the device, the process system for preparing the synthesis gas can be simplified, the semi-coke and tar contents in pyrolysis and gasification can be decreased, and the gasifying efficiency of the system and the quality of the synthesis gas can be improved.

The invention relates to a step heating method and heating system for preheating of a gas fractionating tower inlet material. The heating method includes: preheating a material by a hot water / material heat exchanger outside a fractionating tower to 80+ / -10DEG C, letting the preheated material enter the fractionating tower, heating the material by a bottom reboiler in the tower and maintaining a working temperature required by material fractionation to realize step heating of the material. The heating system comprises a petroleum fractionating heating system component and a waste heat recovery inlet material heating system component. Specifically, the gas fractionating heating system component comprises: the fractionating tower, an air cooler, a water cooled heat exchanger and the reboiler; and the waste heat recovery inlet material heating system component includes: the hot water / material heat exchanger and a steam type lithium bromide absorption type heat pump. The method and the system provided by the invention utilize the recovered waste heat to preheat the inlet material, realize energy step utilization of the fractionating tower heating process, reduce the process steam consumption by over 20%, improve the energy utilization rate, and save the cost.