104results about How to "Improve heat recovery" patented technology

A high efficiency combined cycle internal combustion and steam engine includes a cylinder having a piston mounted for reciprocation therein with an internal combustion chamber outward of the piston, a fixed cylinder cap sealingly and slideably mounted within the piston and a steam expansion/recompression chamber inside the piston adjacent the cylinder cap. The cylinder cap can be unheated or heated externally to reduce condensation of steam entering the steam chamber from a steam generator fired by waste combustion heat. Steam remaining in the cylinder when a steam exhaust valve closes at the top center position is recompressed during an inward stroke of the piston up to admission pressure prior to admitting the next charge of steam. One valve or a pair of retractable steam inlet valves connected in series within the cylinder cap act in cooperation with steam recompression and clearance volume to achieve an effective zero steam chamber clearance and a gain in mean Rankine cycle temperature to maximize efficiency. The amount of steam admitted each outward stroke is continuously regulated, e.g. by shifting the phase of one steam admission valve of a pair to vary their overlap for determining the steam mass admitted during each cycle to reduce specific fuel consumption. Other valves balance steam displacement with the steam generator output to use steam more efficiently. Engine coolant can be evaporated in a combustion chamber cooling jacket to form steam which is then superheated in a combustion exhaust manifold.

A prime mover (28) in a heat recovery system drives an induction generator (8) which feeds power to a utility grid (9) through a breaker (10) but also powers a load including auxiliary induction motors (11, 12). To provide acceptable waveform and power factor, the auxiliary equipment is driven through IGBT switched bridge converters (13) by DC voltage (15) generated by an IGBT switched bridge converter (13a), instead of three-phase diode rectifiers (16). The switched bridge converter controller (14a) is responsive to a system process controller (23a) which causes the switched bridge controller (13a) to be driven in response to the voltage (26) and current (27) on the generator bus (17). This eliminates the need for harmonic filters (18) and power factor capacitors (20) while improving the quality of the power generated. The controller (23a) trips the breaker if the voltage, frequency or power factor is out of limits.

The invention discloses a vertical cooling and waste heat recovery furnace for sinters, which comprises a feeding hopper and a discharge hopper, wherein the feeding hopper and the discharge hopper are respectively communicated with the top and the bottom of a cooling chamber; first and second air ducts are sequentially sleeved in the cooling chamber; the walls of the first and second air ducts are respectively provided with a plurality of air outlet holes; the top of the first air duct is provided with a cone distributor; the bottom of the second air duct is communicated with a cold air inlet pipe; the cooling chamber is provided with an inner sleeve; a plurality of vent holes are distributed in the wall of the inner sleeve; a hot air collecting cavity is formed between the inner sleeve and a housing of the cooling chamber; the upper part of the hot air collecting cavity is communicated with a hot waste gas exhaust pipe; and the bottom of the hot air collecting cavity is communicated with the discharge hopper. The invention provides a cooling system integrating sinter cooling with closed hot flue gas recovery and waste heat utilization; the vertical cooling and waste heat recovery furnace for the sinters operates under a negative pressure in the cooling process; emission of pollutants can be greatly reduced; the field environment is improved; and the heat recovery rate is improved.

A canned linear motor armature and a canned linear motor of water cooling type are provided. The insulation reliability of a canned linear motor armature is improved. The temperature rises of both the linear motor surface and the armature winding are reduced. Even if the coolant pressure increases, the can neither breaks nor deforms. The weight of the armature is lightened. The viscosity braking force is reduced. In the canned linear motor armature, the armature winding (104) is surrounded with a picture-frame-shaped case (111), both the openings of the case (111) are closed with flat can (121), and coolant passages (131) are provided inside the can (121) and on the top surface of the coil side of the armature winding (104).

[Problems] Provided is a configuration in which a member is not interposed between exhaust gas and a partition wall of an engine coolant passage, and the exhaust gas is caused to directly collide with the partition wall of the engine coolant passage, thus raising the gas flow velocity in a heat exchange part, which enables further improving the exhaust heat recovery rate.

[Means for Solving Problems] An engine exhaust gas heat recovery device (1) recovers heat from engine exhaust gas by performing heat exchange between the engine exhaust gas and engine coolant. A plurality of spray holes (20) facing an inner cylinder tube (31) of a coolant passage (3) have been provided in an outer tube (22) of an exhaust gas inflow tube (2), and the exhaust gas is caused to directly collide with the inner cylinder tube (31) of the coolant passage (3). A minimum distance from each of the spray holes (20) to the inner cylinder tube (31) of the coolant passage (3) is in a range of 1.5 to 7 times the diameter of the spray holes. A relationship between a total opening area of the spray holes (20) and an exhaust gas flow rate is (total spray hole area/exhaust gas mass flow rate)=2.0 to 4.5 (cm²/(kg/min)).

The invention discloses a fresh air integrated machine integrating multiple functions of air treatment, energy recovery and oxygenation and belongs to the technical field of air purification and building ventilation and energy conversation. Based on a conventional independent fresh air system, problems that the comfort of the indoor environment is poor, the ventilating energy consumption is relatively great and the like are comprehensively solved by virtue of purification and dehumidification equipment, a phase change energy-storing material, devices such as a heat exchange device, a molecular sieve nitrogen and oxygen separator, and accessory valves thereof. The novel fresh air treatment device is divided into an air treatment module, an energy recovery module, an oxygenation module and an automatic control module and is mainly composed of driers, a high- and medium-efficiency air filter, an air purification device, a phase change energy-storing material device, the heat exchange device, the molecular sieve nitrogen and oxygen separator, a gas compressor, valves, silencers and the like. According to the integrated machine disclosed by the invention, in processes of adjusting the indoor thermal and humid environment and enhancing the air quality, the operating states of different module systems are controlled by monitoring and feedback by virtue of the automatic control module of the system, so that a good quality of the indoor environment is expected.

The invention relates to a solar photoelectric photo-thermal integrated assembly and a solar combined heat and power generation system of the solar photoelectric photo-thermal integrated assembly. The solar photoelectric photo-thermal integrated assembly is characterized by comprising a photovoltaic cell panel provided with a metal outer frame, a metal sheet type heat exchanger and a heat-preservation material layer, wherein the metal sheet type heat exchanger and the heat-preservation material layer are sequentially arranged on the back surface of the photovoltaic cell panel in parallel and in an overlapped mode, and are rapidly fixed in the metal outer frame of the photovoltaic cell panel through a metal fixing clamp, and the standard photovoltaic cell panel can be rapidly modified into the photoelectric photo-thermal integrated assembly. The photoelectric photo-thermal integrated assembly has the advantages of being compact in structure, high in efficiency, small in pressure loss, light in weight, flexible to install, high in pressure bearing performance, resistant to corrosion, low in cost and the like, further reduces the initial investment and installation space of a medium and low temperature solar thermoelectric system, lowers the operation expenses of the system, and is suitable for civil and industrial occasions requiring for both heat and power.

The invention relates to a coke oven flue-gas waste-heat and dry-quenching waste-heat coupled power generation system and a coupled power generation method thereof. The system comprises a dry-quenching waste-heat recycling device and the dry-quenching waste-heat recycling device comprises a dry-quenching furnace and a dry-quenching waste-heat boiler which are communicated with each other. A dry-quenching secondary superheater, a dry-quenching primary superheater, a first evaporator, a second evaporator, a coke oven flue-gas waste-heat superheater and a dry-quenching economizer are sequentially arranged in the dry-quenching waste-heat boiler. A coke oven flue-gas waste-heat recycling device comprises a coke oven. A coke oven flue-gas main channel is connected to the coke oven and sequentially connected with a coke oven flue-gas waste-heat economizer, a coke oven flue-gas waste-heat evaporator, a coke oven flue-gas draught fan and a coke oven flue-gas chimney. A steam turbine generator unit, the dry-quenching waste-heat recycling device and the coke oven flue-gas waste-heat recycling device form a loop through a condensing unit. According to the coke oven flue-gas waste-heat and dry-quenching waste-heat coupled power generation system and the coupled power generation method, coupled power generation is achieved in the manner that coking flue exhaust fume waste heat enters dry-quenching waste-heat power generation circulation in a coupled manner, and the purposes of efficient utilization of secondary energy and energy saving and emission reduction are achieved.

The invention discloses a synthetic natural gas prepared from one-step process coal and a system thereof. The synthetic natural gas is prepared by the following steps: H2S and other impurities are removed from normal-temperature crude coal gas to obtain purified gas; the purified gas is preheated, subjected to removal of sulfur and other impurities, and divided into two streams; the first purified gas stream enters a thermal-insulation methanation reactor to perform methanation reaction; the reaction gas from the thermal-insulation methanation reactor is cooled by a steam superheater, and sent into an isothermal methanation reactor together with the second purified gas stream; the reaction gas from the isothermal methanation reactor is divided into two streams; the first reaction gas stream is cooled, pressurized by a recycle gas compressor, and sent into the thermal-insulation methanation reactor together with the first purified gas stream; and the second reaction gas stream is cooled, subjected to condensate separation by a condensate separator, and sent into a second absorption tower of a low-temperature methanol washer to remove CO2 and water, thereby obtaining the synthetic natural gas. The method has the advantages of simple technique, brief process, and low device operation and investment cost, and can centrally recover heat energy and coproduce high-quality steam.

The invention discloses an air processing device and a control method and device thereof. The air processing device comprises an air duct system and a coolant circulation system. The air duct system comprises a total heat exchange core, a fresh air duct and an air exhaust duct, wherein the fresh air duct penetrates through the total heat exchange core in a cross manner. The fresh air duct carriesout heat exchange through the total heat exchange core and the air exhaust duct. The fresh air duct comprises a fresh air inlet and a fresh air outlet. The air exhaust duct is provided with an exhaustair inlet and an exhaust air outlet. The coolant circulation system comprises a first heat exchanger, a second heat exchanger, a third heat exchanger and a fourth heat exchanger, wherein the first heat exchanger is arranged between the fresh air outlet and the total heat exchange core, the second heat exchanger is arranged between the fresh air inlet and the total heat exchange core, the third heat exchanger is arranged between the exhaust air inlet and the total heat exchange core, the fourth heat exchanger is arranged between the exhaust air outlet and the total heat exchange core, and thefirst heat exchanger and the second heat exchanger can carry out heat exchange with the fresh air duct, and the third heat exchanger and the fourth heat exchanger can carry out heat exchange with theair exhaust duct for heat recovery.

The invention relates to a two-stage injection heat pump type heat exchange unit, which belongs to the technical field of energy sources. The heat exchange unit provided by the invention comprises the accessories such as a two-stage injection heat pump, a water-water heat exchanger, a connecting pipeline, a valve and the like, wherein the water system of the connecting pipeline is divided into a primary side pipeline and a secondary side pipeline; the primary side pipeline adopts a series connection mode; the secondary side pipeline adopts a parallel connection, series connection or mixed connection mode. By means of an injection heat pump technique, the hot water heat of the primary side pipeline is utilized in a stepped mode; the backwater temperature of the primary side pipeline is greatly reduced; the backwater supply temperature difference of the primary side pipeline is increased; and the hot water heat transfer capability of the primary pipeline and the secondary pipeline is greatly enhanced. The two-stage injection heat pump type heat exchange unit provided by the invention can be used for recycling industrial waste heat, solar energy and the like to improve the waste heatrecycling rate and can be applied to the heat power station of a central heating system to improve the transmission capability of a primary heat network pipeline and reduce the irreversible loss in the heat exchange course.

The invention relates to the air treatment method and the device, especially to the new wind heat recycling method and its device. The method has the new air passage and the exhaust passage separated by the air passage plate; the liquid soakage layer of the said plate at the exhaust passage side; the minim liquid flows in or on the soakage layer when refrigeration to realize the heat exchange between the new air passage and the exhaust passage; the temperature difference between the new air passage and the exhaust passage realizes the heat exchange when heating. The device comprises the air passage wall, the new air intake, the new air outtake, the exhaust intake, the exhaust outtake, the new air passage and the exhaust passage, also the liquid intake, the liquid arranging structure connecting the liquid intake, and the soakage layer of the air passage plate at the side of the exhaust passage. The invention has high heat recycling ratio and wide utilization.

The invention relates to a tube-type UHT high heat recovery rate hot water heat exchange system. In a product pipe, a balance tank, a product pump, a degassing section, a heating section, a sterilization section, a heat recovery section, a tower water cooling section and an ice water cooling section are orderly arranged in the product pipe from an inlet to an outlet. A hot water pipe comprises a heat recovery section hot water circulation part and a sterilization hot water circulation part. The heat recovery section hot water circulation part orderly comprises a cooling hot water tank and a cooling hot water pump and the hot water orderly flows through a heat recovery section, a heating section and a degassing section and finally returns to the cooling hot water tank. The sterilization hot water circulation part orderly comprises a sterilization hot water tank, a sterilization hot water pump and a steam section and the hot water flows through the sterilization section and finally returns back to the sterilization hot water tank. Through a reasonable flow ratio of hot water to product, a high heat recovery rate is obtained.

The invention relates to a method for vinasse tube bank type drying and exhaust gas and steam condensed liquid heat recycling. The method comprises the following steps: (1), after centrifuging vinasse, obtaining a wet vinasse material and vinasse clear liquid, and after concentrating the vinasse clear liquid, feeding concentrated liquid into a concentrated liquid storage tank; (2), conveying the wet vinasse material and the concentrated liquid to a material return spiral conveyor, conveying the wet vinasse material and the concentrated liquid to a mixing spiral conveyor together, mixing, and after mixing uniformly, feeding the mixture into a tube bank type drying machine; (3), feeding saturated steam into the tube bank type drying machine, and heating and drying the material mixture in a reverse flow manner so as to obtain a dried material, exhaust gas and condensed water; (4), after separating the exhaust gas by a cyclone separator, obtaining a separated material and separated exhaust gas, feeding the separated material into the material return spiral conveyor, and cyclically utilizing the separated material; (5), feeding the separated exhaust gas into a sprinkling tower, washing the exhaust gas, and separately producing secondary steam A and washing water left after heat exchange; and (6), feeding the condensed water into a condensed water flash evaporation tank, carrying out flash evaporation on the condensed water, and separately producing secondary steam B and condensed liquid. The method is simple and reliable, is continuous in running, saves energy, reduces consumption and is safe and environment-friendly.

The invention relates to a fresh air handling unit with internal circulation and heat recovery. The fresh air handling unit comprises a shell, a first plate heat exchanger, a second plate heat exchanger, a compressor, a water-cooling condenser and an evaporator, the first plate heat exchanger and the second plate heat exchanger are arranged side by side, a first partitioning plate is arranged between the upper side of the right end of the first plate heat exchanger and the top wall of the shell, a second partitioning plate is arranged between the connecting position of the first plate heat exchanger and the second plate heat exchanger and the top wall of the shell, a third partitioning plate is arranged between the upper side of the left end of the second plate heat exchanger and the top wall of the shell, a fourth partitioning plate is arranged between the lower side of the left end of the second plate heat exchanger and the bottom wall of the shell, and a fifth partitioning plate is arranged between the lower side of the right end of the first plate heat exchanger and the right wall of the shell. A fresh air port and an air delivery port are formed in the top wall of the shell, an air-returning port and an air-discharging port are formed in the left side wall and right side wall of the shell, and the evaporator is arranged on the lower side of the second plate heat exchanger side by side. The fresh air handling unit has the advantages of being simple in structure and high in heat recovery rate and energy efficiency ratio, and can achieve intelligent control and low-energy-consumption operation.

The invention provides a gasification system for high-efficiency recovery of heat energy via a wet ash cooling method. The gasification system comprises: a gasification furnace, wherein an injection device is arranged on a heat exchange surface in a radiant heat exchange chamber of the gasification furnace, thereby forming a low-temperature zone close to the heat exchange surface and a core high-temperature zone located at the side, away from the heat exchange surface, of the low-temperature zone; a gas-solid separation and wet ash cooling device, which is configured to communicate with the synthesis gas outlet of the gasification furnace; a convection heat exchange device, which is used for recycling the sensible heat of synthesis gas and produces power steam; a gas scrubbing equipment, which comprises a venturi scrubber and a scrubbing tower in series connection; and a black water treatment system, which comprises a primary flash distillation unit and a secondary flash distillation unit in series connection. The invention also provides a gasification process for high-efficiency recovery of heat energy. According to the invention, the radiant heat exchange chamber using a border area temperature control technology can ensure the safety of heat exchange tubes, higher heat recovery efficiency under high radiation intensity, higher saturated steam yield and smaller equipment size.

The invention discloses carboxyl magnetic bead immobilized glutamic acid decarboxylase and a preparation method and application thereof. According to the carboxyl magnetic bead immobilized glutamic acid decarboxylase, carboxyl magnetic beads are adopted as a carrier, glutamic acid decarboxylase is fixed to the surface of the carboxyl magnetic beads through coupling of amidogen and carboxyl, and the base sequence of encoding genes of the glutamic acid decarboxylase is shown as SEQ ID NO.1. The preparation method comprises the following steps that 1, the glutamic acid decarboxylase and the carboxyl magnetic beads are provided; 2, the glutamic acid decarboxylase and the activated carboxyl magnetic beads are mixed, and after the reaction is completed, the carboxyl magnetic bead immobilized glutamic acid decarboxylase is obtained through separation. The carboxyl magnetic bead immobilized glutamic acid decarboxylase has the advantages of being easy to separate, capable of being repeatedly recycled, high in thermal stability, high in operation stability and the like. Compared with free enzymes, half-inactivation temperature of the carboxyl magnetic bead immobilized glutamic acid decarboxylase is improved by 2.1 DEG C, and after 10 times of repeated catalyzing, the activity is still kept at 90.42%.

The invention provides a thermal recovery system with improved thermal efficiency and a thermoelectric combined production system equipped with the thermal recovery system. A combustion apparatus includes a cylindrical combustion chamber surrounded by an inner wall. A cooling chamber comprises an intermediate wall spaced from the inner wall. Cooling water flows in and out lower and upper sides of the intermediate wall, to cool the inner wall by the cooling water that flows into a space formed between the inner and intermediate walls of the cooling chamber. A lateral combustion air supply chamber comprises an outer wall spaced from an outer side of the intermediate wall. Combustion air is supplied at an upper side of the outer wall to thereby make the air in a tangential direction with respect to the cylindrical outer wall turn and fall in a space formed between the intermediate wall and the outer wall, so that the combustion air is supplied to the combustion chamber via an opened lower portion of the lateral combustion air supply chamber.

A reactor waste heat boiler steam superheater three-in-one device is a chemical high-temperature reaction heat recovery and utilization device; it includes a high-pressure cylinder, a saturation section and a superheating section in the waste heat boiler shell. The saturated section has a water inlet, and the superheated section has a superheated steam outlet; the saturated section and the superheated section are connected through a demister wire mesh, and there is a gas distribution box and a cold air chamber in the high-pressure cylinder at one end of the waste heat boiler shell, and the reaction hot gas enters the three sets through the gas distribution box. After the tube is cooled, it gathers at the outlet of the cold air chamber; the longer three sleeves pass through the saturated section and extend to the superheated section, and the three shorter sleeves are located in the saturated section; one end of the outer sleeve is welded to the thick tube plate at the end of the high pressure section; through a special structure to avoid The temperature difference of the same tube plate will cause temperature difference stress and cause deformation and damage; the device can significantly save valuable materials and investment, and can improve heat recovery rate.