32results about How to "Full waste heat recovery" patented technology

The invention relates to a high-temperature flue gas dust removal and waste heat utilization system of a metallurgical furnace. The system comprises a first-stage electric precipitator, a waste heat utilization device and a second-stage electric precipitator which are sequentially communicated, wherein the waste heat utilization device comprises a heat exchange tank and a heat exchange tube row; the heat exchange tube row is sleeved with a dedusting board; multiple through holes are formed in the dedusting board; vertical tubes of the heat exchange tube row penetrate through the through holes and are in sliding connection with the through holes of the dedusting board; a hydraulic cylinder is fixedly arranged on the top of the heat exchange tank; a cylinder barrel of the hydraulic cylinder is fixed to the top of the heat exchange tank; a piston rod of the hydraulic cylinder penetrates through the top of the heat exchange tank and is fixedly connected with the dedusting board inside the heat exchange tank. By means of the high-temperature flue gas dust removal and waste heat utilization system of the metallurgical furnace, the hydraulic cylinder drives the dedusting board to vertically move, smoke of the tube walls of the vertical tubes of the heat exchange tube tow is scraped, the higher heat exchange efficiency can be kept continuously, waste heat is sufficiently recycled, and the economic value of the waste heat system is improved.

The invention relates to a high-temperature flue gas waste heat utilizing device for a metallurgical furnace. The high-temperature flue gas waste heat utilizing device for the metallurgical furnace comprises a heat exchanging box and a heat exchanging tube nest. A dust removing plate is arranged outside the heat exchanging tube nest in a sleeving mode and is provided with a plurality of through holes. Vertical tubes of the heat exchanging tube nest are arranged in the through holes in a penetrating mode and are connected with the through holes of the dust removing plate in a sliding mode. A hydraulic cylinder is fixedly arranged at the top of the heat exchanging box, and a cylinder barrel of the hydraulic cylinder is fixed to the top of the heat exchanging box. A piston rod of the hydraulic cylinder penetrates through the top of the heat exchanging box and is fixedly connected with the dust removing plate arranged inside the heat exchanging box. According to the high-temperature flue gas waste heat utilizing device for the metallurgical furnace, the hydraulic cylinder drives the dust removing plate to move up and down, and flue gas on the tube walls of the vertical tubes of the heat exchanging tube nest is removed, so that the high heat exchanging efficiency of the high-temperature flue gas waste heat utilizing device for the metallurgical furnace can be maintained continuously, the waste heat recovery is fully conducted, and the economic value of a waste heat system is improved; the vertical tubes of the heat exchanging tube nest are in clearance fit with the through holes of the dust removing plate, so that the phenomenon that the dust removing plate is stuck during the up and down operation process can be prevented.

The invention relates to a gas water heater and a waste heat recycle method. The gas water heater comprises a combustion chamber, a smoke emission pipe, a heat exchange passage, a main heat exchanger and a waste heat recycle device, wherein the heat exchange passage communicates with the combustion chamber and the smoke emission pipe; the waste heat recycle device comprises a heat pipe module; one end of the heat pipe module is located in the heat exchange passage, and the other end of the heat pipe module is located at the water inlet end of the water heater; the waste heat recycle device further comprises a heat absorption module and a heat emission module; the heat absorption module is arranged in the heat exchange passage; the heat emission module is arranged on the outer part of the heat exchange passage; and the heat pipe module is connected with the heat absorption module and the heat emission module. According to the gas water heater and the waste heat recycle method, waste heat of waste gas emitted by the gas water heater is transmitted to preheat inlet water of the gas water heater by utilizing the heat pipe. By adopting the gas water heater and the waste heat recycle method, the waste heat of high-temperature smoke of the gas water heater can be fully recycled; the heat efficiency of the gas water heater is improved; meanwhile, the gas water heater is energy-saving and environment-friendly; the structure is simple; and cost is low.

The invention relates to a condensing type fuel gas water heater. The condensing type fuel gas water heater comprises a combustion chamber, a smoke exhausting pipe, a main heat exchanger, a condensing heat exchanger and a waste heat recycling device; the waste heat recycling device comprises a heat pipe module; one end of the heat pipe module is located in the portion, between the condensing heat exchanger and the smoke exhausting pipe, of a smoke exhausting channel; and the other end of the heat pipe module is located at the water inflow end of the water heater. The waste heat recycling device further comprises a heat absorbing module and a heat releasing module; the heat absorbing module is arranged in the smoke exhausting channel; the heat releasing module is arranged outside the smoke exhausting channel; and the heat pipe module is connected with the heat absorbing module and the heat releasing module. According to the condensing type fuel gas water heater, waste heat of waste gas exhausted by the condensing type fuel gas water heater is transmitted to pre-heat inflow water of the condensing type fuel gas water heater through a heat pipe. By means of the condensing type fuel gas water heater, the waste heat of high-temperature flue gas of the condensing type fuel gas water heater can be fully recycled and used, the heat efficiency of the condensing type fuel gas water heater is improved, and meanwhile, energy conservation and environmental protection are achieved, the structure is simple, and cost is low.

The invention provides a coal-fired flue gas ultra-low emission and waste-heat utilization combined system and a running method thereof. The system includes a flue gas and air system, a heat supply network water system and a circulating water system. The flue gas and air system includes a dust remover, a high temperature waste heat recovery device, a desulfurization tower, a low temperature wasteheat recovery device, a reheater and the like which are sequentially connected through a flue gas and air passage. The high temperature waste heat device is connected to the heat supply network watersystem through a pipeline arranged between the high temperature waste heat device and the heat supply network water system. The heat supply network water system and the circulating water system exchange heat through a heat pump, so that the circulating water system and a low temperature and low grade heat source of flue gas of an outlet of the desulfurization tower are deeply utilized. The flue gas of an outlet of a boiler air pre-heater is subjected to dedusting, cooling, desulfuration and cooling again, phase change agglomeration, turbulent agglomeration and other effects are used for deepremoval of fine particles, moisture and soluble salts in the flue gas, and the flue gas ultra-low emission is achieved during flue gas and steam turbine condenser circulating water waste heat using. The coal-fired flue gas ultra-low emission and waste-heat utilization combined system and the running method have the advantages that the low-grade energy cascade utilization efficiency is low, and ultra-low emission of pollutants in the flue gas is achieved.

The invention discloses an environment-friendly waste heat recovery device of a boiler pressure vessel and a working method of the environment-friendly waste heat recovery device. The environment-friendly waste heat recovery device comprises a machine box. A supporting frame is fixedly connected to the two sides of the top of the machine body through bolts, and a pressure vessel body is placed ina conic sleeve ring of the supporting frame. Empty grooves are formed in the pressure vessel body, and a temperature sensor is fixedly mounted on the inner wall of one empty groove. The number of outlets of the empty grooves is two. The invention relates to the technical field of boiler waste heat recovery equipment. According to the environment-friendly waste heat recovery device of the boiler pressure vessel and the working method of the environment-friendly waste heat recovery device, omni-directional waste heat recovery on the boiler pressure vessel can be achieved, the problems that wasteheat recovery is only carried out on boiler waste slag, and waste heat resources on the inner wall of the boiler pressure vessel are still wasted are solved well, the waste heat recovery effect is greatly enhanced, meanwhile, waste heat recovery is carried out on liquid waste, gas waste and solid waste, and the aim of carrying out comprehensive waste heat recovery on the boiler pressure vessel isachieved well.

The invention discloses activated carbon processing equipment which comprises an activation furnace, the activation furnace comprises a furnace body, a combustion chamber and an activation channel are formed in the furnace body, and the activation channel is communicated with the combustion chamber at the discharge end of the activation channel; a negative pressure suction device communicated with the combustion chamber is arranged at the feeding end of the furnace body, an air inlet communicated with the combustion chamber is formed in the furnace body, and the negative pressure suction device is used for sucking air and activated tail gas generated in the activation channels into the combustion chamber to be combusted and release heat so as to supply heat to the activation channels. According to the invention, the negative pressure suction device communicated with the combustion chamber is arranged at the feeding end of the activation furnace, so that the activated tail gas and high-temperature flue gas generated by combustion of the activated tail gas cannot escape from the activation furnace under the negative pressure suction, and can be directly utilized in the activation furnace without being led out for purification, and the heat loss is greatly reduced.

The invention provides a heat exchanger (100, 100', 100'' or 100''') which comprises a housing (110), a baffle (120), a cold material tube (130 or 130''), a hot material tube (140 or 140''), at least a first communication device (160 or 160') and a second communication device (150), wherein the baffle (120) is arranged in the housing and used for dividing the internal space of the housing into upper and lower medium distribution chambers (111 and 112) filled with heat exchange mediums respectively; the cold material tube (130 or 130'') and the hot material tube (140 or 140'') are arranged in the upper medium distribution chamber and the lower medium distribution chamber respectively; cold and hot materials are suitable for being conveyed to pass through the cold and hot material tubes respectively to exchange heat with the heat exchange mediums; the at least a first communication device (160 or 160') and the second communication device (150) are used for communicating the two medium distribution chambers; the heat exchange medium in the upper medium distribution chamber exchanges the heat with the cold material conveyed in the cold material tube to be cooled and enters the lower medium distribution chamber through the second communication device; and the heat exchange medium in the second medium distribution chamber exchanges the heat with the hot material conveyed in the hot material tube to be heated and enters the upper medium distribution chamber through the first communication device. Therefore, all the cold and hot materials flow in a tube pass; and a shell pass is filled with impurity-free clean fluid, so that the problem of high possibility of blockage of impurity fluid in a heat exchange process is effectively solved.

The invention discloses a boiler flue gas waste heat recycling system based on a heat exchanging absorption tower and a method, and belongs to the technical field of flue gas waste heat recycling anddisposal. According to the system, a heat exchanging coil pipe is arranged inside the heat exchanging absorption tower; a flue gas outlet of a boiler communicates with a flue gas inlet of an electrostatic dust remover; a flue gas outlet of the electrostatic dust remover communicates with a flue gas inlet of an economizer; an flue gas outlet of the economizer communicates with a flue gas inlet of the heat exchanging absorption tower; an flue gas outlet of the heat exchanging absorption tower communicates with a flue gas inlet of a dehydrator; a flue gas outlet of the dehydrator communicates with a diverter; the diverter communicates with a denitration device and an air mixer respectively; the air mixer communicates with a draught fan and is connected with an air inlet at the bottom of the boiler; and the denitration device communicates with a chimney. Via the arrangement of the heat exchanging absorption tower, the functions of desulfuration, denitration and heat exchange are integrated, flue gas is in direct contact with ammonia, and water inflow in the heat exchanging coil pipe from the boiler is heated, so the heat transfer coefficient is increased, heat transfer efficiency is improved, the temperature of water inflow in the economizer is increased, low-temperature corrosion of the economizer is lessened, and a desulfuration device is omitted.

The invention relates to the technical field of printing and dyeing equipment, and discloses a device for recovering waste heat of printing and dyeing equipment, including the printing and dyeing equipment. The device for recovering waste heat from printing and dyeing equipment uses a fan to blow the hot air inside the printing and dyeing equipment into the inside of the fixed block. The air enters in a spiral, which effectively reduces the speed of hot air entering, and the hot air impacts the rotating fan blades. At this time, the rotating fan blades, movable blocks and buffer springs work together to further buffer the effect. The device passes through a series of The unique mechanical structure reduces the flow rate of hot air entering the waste heat recovery device, so that the hot air stays in the waste heat recovery device for a long time, which can fully recover waste heat and make waste heat recovery more efficient. The rotating block fits closely with the guide groove.

The invention provides a hot flue gas purification and waste heat power generation integrated device. The hot flue gas purification and waste heat power generation integrated device comprises a steam generator for flue gas cooling, a transmission component, a Stirling engine and a power generator. The device has the effects that superheated steam in flue gas can be condensed to recycle sensible heat and latent heat in the flue gas, the effect that airflow in each heat exchange branch pipe is uniform is achieved through parts and the structure, and the device has the characteristics of being sufficient in waste heat recycling and high in heat exchange efficiency; and according to the device, the phenomenon that the heat exchange pipeline is blocked by fog drops generated by condensation of dust, low-boiling-point organic volatile matters, water vapor and the like in the heat exchange branch pipes can be reduced or avoided, meanwhile, the effect of removing some dust and condensate to purify flue gas is achieved, and the phenomena of cracking and steam leakage caused by thermal stress of connection points of different parts are reduced or avoided. According to a transmission component, power of the multiple Stirling engines is collected and then supplied to one generator, and the transmission component has the characteristics of being compact in equipment, small in occupied space, long in service life and good in safety.

The invention relates to a gas water heater and a waste heat recycle method. The gas water heater comprises a combustion chamber, a smoke emission pipe, a heat exchange passage, a main heat exchanger and a waste heat recycle device, wherein the heat exchange passage communicates with the combustion chamber and the smoke emission pipe; the waste heat recycle device comprises a heat pipe module; one end of the heat pipe module is located in the heat exchange passage, and the other end of the heat pipe module is located at the water inlet end of the water heater; the waste heat recycle device further comprises a heat absorption module and a heat emission module; the heat absorption module is arranged in the heat exchange passage; the heat emission module is arranged on the outer part of the heat exchange passage; and the heat pipe module is connected with the heat absorption module and the heat emission module. According to the gas water heater and the waste heat recycle method, waste heat of waste gas emitted by the gas water heater is transmitted to preheat inlet water of the gas water heater by utilizing the heat pipe. By adopting the gas water heater and the waste heat recycle method, the waste heat of high-temperature smoke of the gas water heater can be fully recycled; the heat efficiency of the gas water heater is improved; meanwhile, the gas water heater is energy-saving and environment-friendly; the structure is simple; and cost is low.

The invention discloses a high-temperature flue gas waste heat recovery and advanced purification system. The system comprises a waste heat recovery module, a power generation module, an organic Rankine cycle heat exchanger and a dust removal purification module, wherein the gas inlet end of the waste heat recovery module is connected with a high-temperature flue gas inlet, the gas outlet end of the waste heat recovery module is connected with the dust removal purification module, two sets of tube type heat exchangers in different arrangement directions are arranged in the waste heat recovery module, a heat-exchange medium pipe outlet inside the waste heat recovery module is connected with the power generation module, the power generation module and the organic Rankine cycle heat exchanger are connected in series, and steam output through the organic Rankine cycle heat exchanger is subjected to refluxing through a condenser, passes through a working medium separator and then is connected to the waste heat recovery module and a heat exchange medium pipe inlet of the organic Rankine cycle heat exchanger. According to the high-temperature flue gas waste heat recovery and advanced purification system, a water working medium and an organic working medium are adopted and combined with electrolyzed high-temperature flue gas for three-time heat exchange, the purpose of utilizing heat of high-temperature flue gas to the maximum extent is achieved, the dust removal purification module is adopted for conducting advanced purification on cooled flue gas, energy conservation and emission reduction are achieved, and the economic benefit of enterprise production is improved.

The invention discloses a waste heat recovery device and recovery method of a stepping type sintering machine. High-temperature wind in a sintering section flue and a cooling section flue is intercepted by the waste heat recovery device to conduct heat exchanging, so that full waste heat recovery is realized, heat-exchanged low-temperature wind is sent back into the sintering section flue and the cooling section flue, and the normal working of the stepping type flat-burning sintering machine is not affected.