224results about How to "Realize waste heat utilization" patented technology

The invention discloses a flue gas circulation system and method for sintering machine flue gas recirculation denitration. The flue gas circulation system is composed of a sintering machine, a branch pipe I, a branch pipe II, regulating valves, a recirculation flue, a recirculation draught fan and a top-suspended flue gas hood. The method comprises the steps that the recirculation draught fan is utilized to extract flue gas in the middle section and the rear section of a wind box of the sintering machine, recirculation flue gas enters the recirculation flue through the branch pipe I and the branch pipe II, enters the top-suspended flue gas hood, and enters a high-temperature combustion zone of a trolley again from the top of the sintering machine, NOx in the flue gas is restored to be N2 through coke, and the NOx is removed. According to the flue gas circulation system and method for the sintering machine flue gas recirculation denitration, on the premise that the combustion mode of the sintering machine and the sinter quality are not changed, the NOx is removed efficiently, the changes to a system are less, the operating cost is low, the operation is simple, convenient and flexible, and the denitration efficiency is high; the flue gas circulation system and method for the sintering machine flue gas recirculation denitration have wide application prospect in the field of sintering machine flue gas denitration.

The invention discloses a flue gas moisture recovery system and method. Flue gas discharged by a boiler sequentially passes a desulfurization tower (1), a first heat exchanger (2) and a second heat exchanger (3), enters a chimney (4) and is discharged, the flue gas passing the desulfurization tower (1) is cooled by the first heat exchanger (2), water vapor in the flue gas is coagulated into liquid water, and the flue gas is heated by the second heat exchanger (3). The desulfurized flue gas is cooled and dewatered by the aid of an absorption heat pump and then heated, flue gas moisture can be recovered, chimney output is improved, 'gypsum rain' and 'white smoke' discharging are relieved, and contaminant can be diffused towards high altitude.

The invention relates to a power plant cooling system which improves the cooling efficiency by a residual heat refrigeration way, in particular to a cooling system which is used for the power plant, carries out the refrigeration by the residual heat of a steam turbine and utilizes the prepared cold water to cool the circular cooling water of the steam turbine further. The cooling system comprises a steam condensed water circulation consisting of a steam turbine, a steam condenser, a condensed water circulation pump and a combustion boiler, and a steam cooled water circulation consisting of a steam condenser, a cooling tower and a cooled water circulation pump. The cooling system is characterized in that a lithium bromide refrigeration unit is added; a high pressure generator of the lithium bromide refrigeration unit is arranged between the steam turbine and the steam condenser so as to lead the steam to become the heat source of the unit; the unit also comprises a refrigerant water tank which can store the cold energy; furthermore, the refrigerant water tank is connected with all air conditioners of the central air conditioning by pipelines; and the refrigerant water tank is arranged between the steam condenser and the cooling water circulation pump so that the refrigerant water is used for supplying the coldness to the central air conditioning or further cooling the circular cooling water of the steam turbine. The cooling system solves the problem that the residual heat of the power plant is cooled and wasted and has the advantages of high cooling efficiency, saving energy, being capable of supplying the cold source for the central air conditioning and the like.

The invention discloses a radiating apparatus for a variable high-power device of a spacecraft, belongs to the field of the spaceflight thermal control technology, and solves the problem of single radiating method and high compensation heating power consumption of the spacecraft device in the prior art. The radiating apparatus provided by the invention mainly comprises a mounting plate, a thermal insulation cushion, a phase-changing box, a thermal pipe hot end, a multi-layer thermal insulation assembly, a thermal pipe middle section and a thermal pipe cold end, wherein the thermal insulation cushion is arranged between the mounting plate and the device; the phase-changing box comprises a main body and a sealing cover; the inner surface of the main body is fixed on the outer surface of the device; staggered rib plates are arranged on the outer surface of the main body; the sealing cover is fixed on the outer surface of the main body in a sealing manner; the space between the main body and the sealing cover is filled with a phase-changing material; the thermal pipe hot end is fixed on the surface of the sealing cover; and the thermal pipe cold end is fixed on a radiating surface or a position needing to be radiated. The radiating apparatus does not require a quite large radiating surface or compensating heat; meanwhile, the energy saving efficiency can reach greater than 90%; and in addition, afterheat utilization and accurate temperature control can be realized as well.

The invention discloses a residual heat utilization and simultaneous desulfurization and denitrification system for tower type coke oven flue gas. The residual heat utilization and simultaneous desulfurization and denitrification system comprises a draught fan and a flue gas purification tower, wherein the draught fan is connected with a coke oven flue and the flue gas purification tower; the flue gas purification tower comprises a hot pipe type wastewater evaporator, a crystallization tank, a flue gas oxidization reactor and a flue gas washing tower; the hot pipe type wastewater evaporator is connected with a wastewater circulating pump and a waste water tank; the hot pipe type wastewater evaporator is connected with an ammonia evaporation wastewater pump and a wastewater heat exchanger; the hot pipe type wastewater evaporator is connected with an alkali liquid metering pump and a complete condenser; the complete condenser is connected with an ammonia water cooler, an ammonia water cooler and an ammonia water pump; the ammonia water pump is connected with the flue gas washing tower; the complete condenser and the ammonia water cooler are connected with technical cooling water; the hot pipe type wastewater evaporator is connected with a flue gas heat exchanger and a light generator; the light generator is connected with the flue gas oxidization reactor; flue gas is subjected to heat exchange by the flue gas heat exchanger and then enters a main flue to be evacuated by a chimney; and the crystallization tank lifts a crystallization pump to be connected with a coke oven coal gas ammonium sulfate production system.

The invention discloses a system for preparing a sulphoaluminate superhigh water filling material by using industrial solid waste and a method thereof, and relates to a method for producing the superhigh water filling material by using a matrix material. According to the invention, ferro-silico-aluminum based solid waste such as gangue and calcium sulfate based solid waste such as desulfurized gypsum are taken as the raw materials, the above raw materials are subjected to grinding, homogenizing, sintering and clinker grinding, and the matrix material is prepared. The matrix material is taken as a core material, a specific additive is taken as an auxiliary material, through a certain construction technology, and the superhigh water filling material with highest water content of 97% can be used for backfill of a goaf such as coal mine. In the invention, complementation and utilization of a plurality of large industrial solid and waste can be realized, the produced superhigh water filling material has high cost performance, can substitute the high-quality mineral product resource, and can greatly increase the added value of the large industrial solid waste regeneration products.

The invention provides a heat exchange system for an engine and a power cell, a control method and an automobile. The heat exchange system for the engine and the power cell comprises an external charging connector, a second heater, a second heat exchanger, a first heat exchanger, a first heater, a control switch and a controller. The second heater and the second heat exchanger are attached to the power cell. The first heat exchanger is connected with the engine through a pipeline and connected with the second heat exchanger through a pipeline. A heat exchanger switch is arranged between the first heat exchanger and the second heat exchanger. The first heater is attached to the first heat exchanger. The control switch is connected with the external charging connector, the power cell, the first heater and the second heater. The controller judges whether the engine and the power cell need to be heated or not according to the temperature of the engine and the temperature of the power cell, a power supply device for heating the engine and the power cell is selected according to the working state of the automobile, waste heat utilization of the engine is achieved, and meanwhile mutual heating of the engine and the fuel cell is achieved.

The invention discloses synchronous desulfurization and denitrification technology of coal-fired flue gas by taking hydrogen sulfide as a reducing agent. The technology comprises the following steps: 1) preparation of dissolved H2S; 2) preparation of a mixed gas of H2S, NO, NO2, and SO2; and 3) synchronous desulfurization and denitrification. According to the technology, integration of a desulfurization and denitrification device is authentically realized. NO and NO2 in the coal-fired flue gas are converted into N2 and water; SO2 and H2S are converted to high-purity elemental sulfur; and organic matters in waste water are further removed, so that treatment of wastes with other wastes is realized. Elemental sulfur is recycled through the technology; one part of elemental sulfur is cycled and utilized to maintain equipment operation; and the other part of elemental sulfur is output as a product. The reducing agent of H2S in the technology is prepared from an in-situ product of elemental sulfur through reduction, can be prepared when used, and does not need to be bought outside. Therefore, cost of purchase, transportation, and storage and potential security risk are avoided. Compared with a mainstream device, the desulfurization and denitrification device is significantly lower with respect to land occupation, construction cost, operation cost, and the like.

The invention discloses a river sand screening device for construction. The sand screening device comprises a sand feeding hopper, a drying cylinder, a primary screening device and a secondary sand screening device, the drying cylinder is mounted at the upper end of a bracket; the drying cylinder is of a double-layer hollow structure, a heating block is arranged between the outer cylinder wall andthe inner cylinder wall of the drying cylinder; one end of the drying cylinder is connected with a sand inlet hopper; the other end of the drying cylinder is communicated with the primary screening device; the primary screening device is a sand screening barrel; the sand screening barrel is installed on a supporting frame, first screening holes are formed in the side wall of the sand screening barrel, the second-stage sand screening device comprises a swing frame and a sand filtering plate, a sand screening plate is fixed to the upper end of a swing frame, second screening holes are formed inthe sand screening plate, the swing frame is connected with the supporting frame and located below the sand screening barrel, and the sand screening plate and the sand screening barrel are opposite in inclination direction. The problem that wet sands with small particles are mutually adhered is solved, the working efficiency is improved, the screening effect is improved, the utilization rate of the sand is increased, waste is avoided, and the construction cost is reduced.

The invention provides an air conditioner water circulation system, a control method and an air conditioner. The air conditioner comprises an indoor unit and an outdoor unit. The air conditioner watercirculation system comprises a condensed water collecting component, a water storage component and a humidifying component which are sequentially connected. The water storage component comprises a water storage tank and a compressor water tank which are connected. Water collected in the water storage tank enters the compressor water tank for heat exchange and then indoor air is humidified throughthe humidifying component. According to the water circulation system, in a heating mode, the water circulation system is intelligently adjusted based on the relationship of values of indoor temperature and humidity and preset values, so that the indoor air humidity is increased, and the comfort of a human body is improved.

The invention relates to a triple-generation system for utilizing slag-washing water afterheat by using a blast furnace drum method. The system comprises a graining tower, wherein the graining tower is sequentially communicated with a drum, a hot water tank and a heat storage regulating reservoir; the heat storage regulating reservoir comprises a precipitating heat storage tank and a graining impounding reservoir; the precipitating heat storage tank is connected with a first inlet of a heat exchange device through an afterheat water supply pump group; a first outlet of the heat exchange device is communicated with the graining impounding reservoir; a second inlet of the heat exchange device is respectively connected with a heating user and the first outlet of a refrigeration mechanism through a heating water supply pump group; the heating user and the first inlet of the refrigeration mechanism are communicated with the second outlet of the heat exchange device; the second inlet of the refrigeration mechanism is communicated with an indoor refrigeration user and a dehumidified blast user; the indoor refrigeration user and the dehumidified blast user are communicated with the second outlet of the refrigeration mechanism; and the graining impounding reservoir is communicated with the graining tower through a graining water supply pump group. The system is applied to triple-generation of heating, refrigerating or dehumidified blasting of a blast furnace, and is high in thermal efficiency and stable in water quality.

The invention discloses a fuel gas thermal desorption-steam enhanced vapor extraction in-situ coupling repair method for a composite organic contaminated site. A high-temperature flue gas heating well, a steam injection well and a vapor extraction well are included. High-temperature flue gas generated by a combustor is subjected to heat transfer through the high-temperature flue gas heating well for soil remediation; flue gas returned from the high-temperature flue gas heating well is introduced into the steam generator, softened water for generating steam is introduced into the steam generator at the same time, and steam generated by heat of the flue gas is injected into the steam injection well and used for steam enhanced vapor extraction. High-temperature flue gas generated by thermal desorption of fuel gas and steam generated by external softened water are used for steam injection of steam enhanced vapor extraction, internal coupling of GTR and SEE is truly achieved, waste heat ofhigh-temperature flue gas is recovered, waste heat utilization is achieved, remediation efficiency is greatly improved, and the method is particularly suitable for benzene series, petroleum hydrocarbon, polycyclic aromatic hydrocarbon and halogenated hydrocarbon composite organic contaminated sites.

The invention discloses a coal gasification and reburning efficient denitrification system for a cement decomposing furnace by high-temperature triple air. The coal gasification and reburning efficient denitrification system comprises a decomposing furnace and a high-temperature triple air duct, wherein the decomposing furnace is provided with a main combustion zone coal-injection duct and a cement raw material discharging pipe; the high-temperature triple air duct communicates with a main combustion zone of the decomposing furnace for providing combustion-supporting wind; a branched pipe extending to the upper part is connected onto the high-temperature triple air duct; a coal gasifying pipe and a burnout air duct which communicate with a reburning zone and a burnout zone of the decomposing furnace are respectively educed from the unconnected end of the branched pipe; a first high-temperature adjusting valve is arranged at a connecting part of the branched pipe and the high-temperature triple air duct; a second high-temperature adjusting valve is arranged at the unconnected end of the branched pipe; a coal gasification coal-injection pipe and a water steam spraying-in pipe are respectively connected onto the gas gasifying pipe. Large-sized equipment does not be refitted if the coal gasification and reburning efficient denitrification system is adopted, so that investment is less; by using gas as a reburning fuel, the efficient denitrification system has high denitrification efficiency and the characteristics of economy and high efficiency.

The invention discloses a method for preparing calcium carbonate and co-producing sulfate by utilizing industrial desulfurization gypsum, and the method comprises the following steps: carrying out size mixing treatment on the desulfurization gypsum to obtain gypsum slurry, adjusting the gypsum slurry to be alkaline by adopting an alkaline compound, introducing carbon dioxide gas for reaction, and after the reaction is finished, carrying out solid-liquid separation, and obtaining a calcium carbonate product and a sulfate solution; carrying out impurity removal treatment on the sulfate solution, and concentrating and crystallizing to obtain a sulfate product. According to the method, the maximum resource comprehensive utilization of the desulfurized gypsum can be realized, a high-purity calcium carbonate product can be obtained and can be returned to the flue gas desulfurization process of enterprises in the electric power industry, the fluorine chemical industry and the metal smelting industry, and byproducts such as sulfate (ammonium sulfate) can be obtained and can be used as fertilizers or industrial raw materials for agricultural production; virtuous cycle of the whole production and manufacturing process is realized, comprehensive utilization of sulfur and calcium resources and emission reduction of carbon are promoted, and large-scale popularization and application are facilitated.