436results about How to "Improve waste heat utilization" patented technology

The invention relates to a compression-adsorption compound heat pump heating system, which combines the compression heat pump and the adsorption heat pump with different methods to provide a compound waste heat utilization heating system, which is belonging to the waste heat utilization, energy saving and environment protection area. The compression system and the adsorption system can use one condensation-evaporation device to form a integrated system; or they are independent to form a compound heat pump heating system; or they can form a series heating system both in waste heat utilization and heat supply; or they can form a mixed connection heating system. The invention can combine the compression and adsorption techniques to overcome the defects of them, improve the utilization degree of waste heat, enlarge the application range, expanding the temperature range, improve the safety and improve the energy saving, environment protection and economic benefit.

The invention proposes a heat and cool power cogeneration system of an integrated multi-functional efficient mini-type gas turbine, which belongs to the novel heat and cool power cogeneration system device. To solve the frequent mismatching of cold and heat load and low efficiency operation of the conventional cogeneration system, measures such as steam reinjection, inlet gas cooling, gas fume and condensate water recovery are introduced on the basis of the heat and cool power cogeneration system of the mini-type gas turbine; in addition, the number of steam outlets and hot-water outlets is increased, thus forming the heat and cool power cogeneration system of the integrated multi-functional efficient mini-type gas turbine. The system is provided with various operation modes suitable for different occasions, can effectively solve the problem of mismatching of cold and heat load of the cogeneration system, so that the system can keep working in highly efficient mode.

The invention relates to the technical field of industrial production of sulfuric acid and cement, the field of industrial solid waste comprehensive utilization, and the field of environment protection and treatment, and particularly relates to a pre-heating decomposition method of producing sulfuric acid from phosphogypsum with co-production of cement. The method includes the steps of powder grinding of raw materials, multi-stage cyclic pre-heating, high-effective decomposition and kiln gas separation and purification. The method is used for preparing a cement raw material from the phosphogypsum subjected to pre-heating decomposition with clay, sand rock, coke and such auxiliary materials in the process of producing the sulfuric acid from the phosphogypsum with co-production of the cement. The method solves the problems that a pre-heating decomposition technology in the prior art is low in decomposition ratio of phosphogypsum, is low in productivity of sulfuric acid and clinker, is liable to cause crusting and blocking in a kiln and is high in production energy consumption, can reduce the decomposition efficiency of the phosphogypsum and accelerate escape of SO2, and further increase the productivity of the sulfuric acid and cement clinker. The pre-heating decomposition method of producing the sulfuric acid from the phosphogypsum with co-production of the cement can significantly reduce sintering temperature and energy consumption of the clinker, can reduce production cost of sulfuric and cement clinker, and can further increase comprehensive utilization rate of the phosphogypsum.

The invention discloses an engine coolant waste heat utilization engine warming system adopting a solid-liquid phase change heat reservoir and a method of the engine coolant waste heat utilization engine warming system. The system comprises a temperature sensor, an electronic thermostat, an electronic fan, a radiator, the solid-liquid phase change heat reservoir, an electronic three-way valve and an MCU. Coolant flows through the phase change heat reservoir to heat phase change materials. The phase change happens to the phase change materials, the phase change materials absorb a large amount of latent heat, and residual heat of an engine is transferred into the phase change heat reservoir to be stored and used for starting engine warming. The electronic thermostat and the electronic three-way valve are controlled by the MCU and kept running synchronously all the time. The premise that normal work of an engine cooling system is not influenced is ensured. After the engine stops, large circulation is closed through the electronic thermostat and the electronic three-way valve. The phase change heat reservoir is sealed and enters the energy preservation state. Thus, under the condition that the existing engine power consumption is hardly increased, waste heat recycle is achieved. The engine warming starting process is achieved under the condition that the engine power consumption is not increased.

The invention discloses a cylinder wall residual heat recovery method and heat transfer device of a dry method cement rotary kiln. A section or multiple sections of fixed outer cylinder walls are sleeved on the outer side of a kiln body of a cement rotary kiln; working medium inlets are arranged at two ends of the outer cylinder wall; an interval is maintained between the kiln body of the cement rotary kiln and the outer cylinder wall and a working medium flow channel and a heat transfer space are formed; the middle part of the outer cylinder wall is provided with a working medium outlet; a cold heat transfer working medium can enter the interval between two cylinder bodies from two ends of each section of outer cylinder wall; the heated working medium is discharged from the fixed outlet at the middle part of the section so as to be supplied to an external heat utilization system and the surface residual heat recovery of the cement rotary kiln is finished. According to the invention, on the basis that the structure of the existing cement rotary kiln body is not changed and the operation of the existing cement rotary kiln body is not influenced, the wasted surface heat of the cement rotary kiln is recovered, not only can the cement production comprehensive energy consumption be reduced, but also the cement kiln body can be protected from exceeding the temperature, and the service life of the cement rotary kiln body is prolonged.

Disclosed is a burning and waste heat power generation system for hazardous wastes. The burning and waste heat power generation system comprises a continuous feeding device, a flue gas purifying device, a power generation device, an online monitoring device, a bubbling bed incinerator and a waste heat boiler. The continuous feeding device is provided with a discharge port, the bubbling bed incinerator is provided with a feed port and an A flue gas outlet. The feed port of the bubbling bed incinerator is connected with the discharge port of the continuous feeding device; the waste heat boiler is provided with an A flue gas inlet and a B flue gas outlet, and the A flue gas outlet is connected with the A flue gas inlet of the waste heat boiler through a pipeline; the flue gas purifying device is provided with a B flue gas inlet, and the B flue gas outlet of the waste heat boiler is connected with the B flue gas inlet of the gas purifying device through a pipeline; and the power generation device is connected with the waste heat boiler through a main steam pipeline. According to the burning and waste heat power generation system for hazardous wastes, high-temperature flue gas produced by burning of deinking residues enters the waste heat boiler to absorb heat and produce superheated steam which is used for generating power, and accordingly, electric energy is added, and purposes of using flue gas waste heat for generating power and reducing environmental pollution are achieved.

The invention discloses an airflow energy-saving drying device and an airflow energy-saving drying method and belongs to the field of drying and energy saving. The device comprises a filter (1), an air blower (2), a heater (3), a feeder (4), an airflow dryer (5), a cyclone separator (6), a bag dust remover (7), an induced draft fan (8) and a pre-heater (9), wherein the filter (1) is connected to an inlet of the air blower (2); the air blower (2) is connected to an inlet of the pre-heater (9); an outlet of the pre-heater (9) is connected to an inlet of the heater (3); an outlet of the heater (3) is connected to an inlet of the airflow dryer (5); the airflow dryer (5), the cyclone separator (6), the bag dust remover (7) and the induced draft fan (8) are connected with one another in sequence; an outlet of the induced draft fan (8) is simultaneously connected with the pre-heater (9) and the heater (3). The airflow energy-saving drying device and the airflow energy-saving drying method are capable of recycling the waste heat of the airflow drying tail gas to the maximum extent; the problem of accumulation of moisture in circulating air is solved; the operation load of the device is effectively reduced.

The invention provides a regenerative-recuperative combined heating furnace and the heating means, which relate to the technology field of industrial heating and recovery of waste heat. The invention is characterized in that: a regenerator and a heat exchanger are provided at the same time in the system; a soaking zone and a heating zone are arranged in front of the heating furnace; a preheating zone is provided on the tail of the heating furnace; multi-zone (point) heating system of the soaking zone, heating zone and preheating zone is adopted, the front of the heating furnace adopts regenerative combustion method and the back adopts recuperative combustion method; the preheating zone directly adopts flue gas waste heat to heat the materials. The objectives of the invention are to realize maximization of the heating furnace and smooth control of the furnace pressure, overcome the defects of the regenerative-recuperative heating furnaces and flue gas waste heat recovery technology and facilitate the low heat value fuels like pure blast furnace gas being applied in the heating furnace. The heating furnace has smooth pressure and long service life. The implementation of the invention realizes the maximization of the heating furnace, improves the flue gas waste heat utilization rate and reaches the aims of improving the pressure condition in the furnace, reducing air draft and sparking and energy conservation and emission reduction, etc.

The present invention relates to an economic, high-effective and energy-saving landfill yard percolation liquor atomization, combustion and evaporation process. It is characterized by that it uses the landfill gas as energy source, and utilizes the flame produced after the landfill gas is combusted by means of combustor and high-temperature smoke to directly and simultaneously incinerate the combustible substances in the atomized percolation liquor and evaporate water content in the atomized percolation liquor, then introduces the hot mixed tail gas into a waste-heat boiler to implement waste-heat reutilization, finally can condense and recover the aqueous vapour in the mixed gas.

The invention discloses a gas engine driven steam compressing and absorbing combined type heat pump hot water unit running method. The method includes the following steps that a gas engine drives a compressor to act. A refrigerant is compressed into high-temperature and high-pressure gas, becomes liquid after heat exchange and enters the compressor after absorbing heat and being evaporated into gas, and compression type refrigerant cycling is formed. The method further includes solution cycling and refrigerant cycling, hot user return water is divided into two ways to be heated; the first way of return water is subjected to heat exchange with exhaust fume of the gas engine in an exhaust fume heat exchanger and then enters a first condenser and a cylinder sleeve heat exchanger in sequence to be subjected to heat exchange, and therefore the temperature of the return water can be increased; and the second way of return water absorbs absorbing heat generated in an external cooling absorber, then enters a second condenser, is subjected to heat exchange with ammonia steam in the second condenser and is provided for a user to use after being heated. By means of the method, the primary energy ratio can be increased.

The invention relates to a two-section flue gas hot-water single/double-effect composite lithium bromide absorption type refrigerating unit which comprises a flue gas type high-pressure generator (7), an evaporator, an absorber, a steam generator (19), a hot-water generator (21) and a condenser, and is characterized in that the condenser comprises a single-effect condenser (22) and a double-effect condenser (18); a heat exchange tube bundle of the hot-water generator (21) and a heat exchange tube bundle of the single-effect condenser (22) are arranged in a cavity; a heat exchange tube bundle of the steam generator (19) and a heat exchange tube bundle of the double-effect condenser (18) are arranged in another cavity; the cooling water process of the single-effect condenser (22) and the double-effect condenser (18) is a series process; and cooling water flows into the single-effect condenser (22) and flows out of the double-effect condenser (18). According to the two-section flue gas hot-water single/double-effect composite lithium bromide absorption type refrigerating unit, the generation pressure of the hot-water generator can be reduced, the dilute solution concentration of a hot-water single-effect cycle is reduced, and the waste heat flue gas outlet temperature is reduced.

The invention relates to a smelting process of low-grade zinc and lead material and a device, which conduct blast furnace reducing smelting through adopting hot air to blow powdered fuel, directly produce high grade zinc oxide and wet lead, wherein the content of pellet zinc in zinc and lead material is 10%-20%, the content of lead is 2%-8%, the content of sulfur is lower than 2%, moisture is 5%-15%, the height of material column in furnace is remained between 2-3m, the temperature of a molten pool is 1100 DEG C-1250 DEG C, the temperature of hot air is 350 DEG C-480 DEG C, the pressures is 15-25 KPa, the coke yield is 18%-25%, the four alkality of R=0.5-1.2. Double air inlets (3) are arranged on the upper portion and the lower portion of a furnace hearth (2), and a hot air sleeve (4) is arranged on the middle lateral portion of the blast furnace. The invention has the advantages of simple structure, stable and reliable working, excellent continuous production, convenient operation, high recovery rate of zinc and lead and low cost, which can effectively treat low grade zinc and lead material.

The invention relates to an energy-saving and environment-friendly solar reactor for hydrogen production by methanol reforming and belongs to the technical field of photovoltaic heating equipment. Thereactor comprises a solar reception system, a methanol reforming reaction system, a tail gas dedusting treatment system and a support base, wherein the solar reception system, the methanol reformingreaction system and the tail gas dedusting treatment system are fixedly arranged on the support base sequentially, located on the same horizontal plane and communicated mutually. The energy-saving andenvironment-friendly solar reactor has the advantages that energy use ratio can be increased greatly, and losses of optical energy and waste heat can be reduced; dust pollution caused by nanoparticles and thermal pollution caused by excessive released waste heat are reduced, environment is protected, and energy is saved; operating data is monitored in real time by the equipment, feedback controlis realized by a computer, and the reactor has the characteristics of being high in automation degree, efficient, clean, environmentally friendly and energy-saving.

The invention relates to a novel tunnel-type folded-rail continuous sintering furnace and a sintering method thereof. The novel tunnel-type folded-rail continuous sintering furnace comprises a furnace body, wherein one end of the furnace is open while the other end of the furnace is closed; an upper layer of roll-type or push-plate-type conveying devices (3) and a lower layer of roll-type or push-plate-type conveying devices (2) which are folded and move in opposite directs are arranged in the inner cavity of the furnace; a slag falling-preventing baffle plate (6) and a carrying mechanism (10) capable of doing an up-and-down reciprocating movement are arranged between the two layers; and a heating device (9) and a fuel gas curtain separating nozzle (8) are arranged in the inner cavity of the lower layer of the furnace. By virtue of a super-fast single-sided heating sintering mechanism, and by the adoption of a pair of opposite conveying devices with an extremely high heat exchanging rate and an extremely high afterheat utilizing rate, the temperature difference between the upper layer and the lower layer can remain about 150-300 DEG C at the same section, thus achieving the most economical ceramic continuous sintering state; therefore, the novel tunnel-type folded-rail continuous sintering furnace is a novel continuous sintering furnace with a super-high sintering speed, an extremely high heat exchanging rate and a super-short length.

The invention discloses a light roasting MgO suspension calcination production process and device. The device comprises a raw material cabin, a five-stage cyclone preheating tube, a suspension calcination furnace, three sets of combustion systems, a three-stage suspension cooling cylinder, a two-stage fluidized bed, a waste gas treatment device, a sleeve type water cooling spiral conveyor, a finished product cabin, a fan, a turning plate valve, a temperature detector and the like. The defects that the existing light calcination MgO calcination equipment has the narrow calcination temperature regulation range, the activity of the produced light calcination MgO product is single, collapse materials under the abnormal work conditions cannot be timely treated, the stable operation of the wholesystem is influenced, and the like are overcome. The combustion systems are arranged in the height direction and the radial direction of the suspension calcination furnace; the two-stage fluidized bed is arranged at the discharging opening of the suspension calcination furnace; the problem of the material collapse phenomenon occurring under the abnormal work conditions can be solved; meanwhile, the precise different-region calcination of the MgO with different activities can be realized; the popularization and application of the light calcination MgO in the building industry can be facilitated.

The invention discloses a waste heat recovery system based on a data center and a control method for the waste heat recovery system. The waste heat recovery system comprises a waste heat collecting unit, a heat pump unit, a heat storage unit, a waste heat conveying unit and a user end. The waste heat recovery system has the advantages that the waste heat collecting unit collects heat generated ina machine room of the data center, and the heat is transmitted to the user end through the waste heat conveying unit after being compressed and condensed by the heat pump unit; the waste heat recoverysystem further stores a part of waste heat in advance through the heat storage unit, when the waste heat is insufficient, the waste heat is released and used, and therefore the waste heat utilizationrate is increased; the purposes that the indoor waste heat is extracted and utilized, circulating water of a heat supply network is heated, and heat supply is realized can be achieved by the waste heat recovery system; and the heat generated by the machine room of the data center can be recycled and reused by the waste heat recovery system, so that energy waste and environmental pollution causedby emission of the waste heat of the machine room can be avoided.

The invention provides a binary Rankine cycle waste heat generating method, a binary Rankine cycle waste heat generating system and a generator. The binary Rankine cycle waste heat generating system comprises a dual evaporation pressure waste heat boiler, a high pressure steam heat recovering system and a low pressure steam heat recovering system, wherein the high pressure steam heat recovering system is used for recycling high pressure steam waste heat; the low pressure steam heat recovering system is used for recycling low pressure steam waste heat; the high pressure steam heat recovering system is a Rankine cycle system of water; and the low pressure steam heat recovering system is a Rankine cycle system containing water and an organic working medium. According to the binary Rankine cycle waste heat generating method, the binary Rankine cycle waste heat generating system and the generator, the dual evaporation pressure waste heat boiler is adopted; the high pressure steam heat recovering system is used for recovering high pressure steam, and the low pressure steam heat recovering system is used for recovering low pressure steam, so that stepped recycling of steam waste heat is realized and is effectively utilized; and compared with a single evaporation pressure waste heat boiler, the dual evaporation pressure waste heat boiler has the advantages that main steam parameters entering a steam turbine can be effectively improved and the generating efficiency of the steam turbine is improved.

An energy saving shower comprises a heater, shower head, heat transmitter, with the heater connecting with shower head and heat transmitter, featuring in the heat transmitter made of seal container, water intake port, and water outlet port, upper panel and bottom plate for the seal container forming a hollow layer around them, with the water intake and outlet ports connecting with the hollow layer which has flow guide wire inside. It is simple, light, reliable, energy saving and low in cost, with residual heat utilization rate reaching 80%.