310results about "Steam superheaters" patented technology

The utility model provides a peak-shaving steam supply system for deep waste heat utilization of a thermoelectric unit, which deeply recovers cold end waste heat and flue gas waste heat of a cogeneration unit, is coupled with a two-stage compression heat pump, extracts waste heat to heat demineralized water, and serves as a primary heat source for supplying industrial steam, so that the waste heat participates in external heat supply; the superheater utilizes the generating capacity of the unit to enable industrial steam to reach steam supply parameters, the waste heat of the unit and the generating capacity are combined for external steam supply, the circulating heat efficiency is improved, the steam supply capacity is improved, meanwhile, the on-grid electricity is reduced, thermoelectric decoupling is achieved, the unit adjusting operation interval is expanded, the operation cost and pollutant emission are reduced, and peak regulation or spot transaction earnings are improved. And a clean, low-carbon, flexible, efficient, economical and energy-saving combined heat and power generation system is constructed.

The invention belongs to the technical field of flexibility improvement and transformation of coal-fired power generation, and discloses a multi-parameter optimization method for optimizing equivalent electricity-electricity efficiency of an electric heating fused salt heat storage pure condensing power generation system, which comprises the following steps of: firstly, determining a fused salt heat storage medium temperature interval, a steam generator heat transfer structure and key parameters of a power generation subsystem; the main steam pressure, the reheating steam extraction pressure and the like are used as optimization variables; secondly, on the basis of thermodynamic feasibility and equipment safety, setting boundary conditions such as main steam pressure grading limitation, a deaerator operation boundary, a fused salt thermal stability threshold value and a heat exchanger heat transfer economical efficiency constraint; then, the heat exchange power of a steam generator is calculated through the reference working condition, the cold and hot salt design temperature and the heat exchange area are determined by combining the fused salt heat exchange temperature difference, and the fused salt mass, the heat storage tank volume and the electric heater power are calculated according to heat absorption and release balance; and finally, iteratively optimizing the key parameters by adopting a multi-parameter optimization algorithm until the equivalent electricity-electricity efficiency is optimal. The problems that in a traditional method, parameter collaboration is poor, constraint conditions are ignored, and global optimization is insufficient are solved, the operation efficiency and economical efficiency of the electric heating fused salt heat storage pure condensing power generation system are remarkably improved, and green and sustainable development of energy is facilitated.

The invention provides a steam type fused salt heat storage peak shaving system and method for a thermal power generating unit. The steam type fused salt heat storage peak shaving system is in coupling connection with the thermal power generating unit. The device comprises a fused salt circulation loop composed of a fused salt cold tank, a fused salt electric heater, a fused salt hot tank and a heat exchange assembly. Wherein the fused salt electric heater is electrically connected with the thermal power generating unit so as to heat low-temperature fused salt conveyed from the fused salt cold tank to the fused salt hot tank to a set temperature; high-temperature fused salt output by the fused salt hot tank heats feed water output by the thermal power generating unit through the heat exchange assembly to generate steam, the steam is conveyed to the thermal power generating unit to generate power, and peak regulation of the thermal power generating unit is achieved. The fused salt is heated through the self-generated electric energy of the thermal power generating unit, the on-grid electric quantity of the thermal power generating unit is greatly reduced, the peak regulation capacity of the thermal power generating unit is improved, and the fused salt heat storage assembly is simplified.

The present application provides a kind of gasification fine slag dewatering drying recycling method and system, using the scheme of the present application, can carry out dewatering drying to high water content gasification fine slag and be used as fuel and be used as resource.The method comprises the following steps: 1) coal gasification black water is treated in black water treatment unit, and flash gas and the gasification fine slag to be treated are obtained;2) the gasification fine slag to be treated is sent into fine slag preheater and is preheated with heat medium;3) the preheated gasification fine slag is sent into drying device and exchanges heat with superheated steam, and dry gasification fine slag and secondary steam are obtained;4) secondary steam is treated by dust removal, and the obtained dust removal secondary steam is sent into fine slag preheater and used as the heat medium;5) the secondary steam output from fine slag preheater is superheated, and superheated steam is obtained;superheated steam is sent into drying device for the heat exchange;6) dry gasification fine slag is sent into combustion unit as fuel and used.

The invention discloses a coal-fired unit deep peak shaving system coupled with electric heating high-temperature phase change heat storage, and relates to the technical field of power generation. The matching capacity of the heat storage system and the full-working-condition operation parameters of the high-parameter coal-fired unit can be effectively enhanced, so that the deep peak regulation capacity and the variable load rate of the coal-fired unit are improved, meanwhile, the energy density, the electricity-heat conversion efficiency and the economic benefits of the heat storage device are improved, and the unit can be prevented from running in an over-low load mode so as to improve the efficiency and prolong the service life. The coal-fired unit deep peak shaving system comprises a coal-fired unit and a high-temperature phase change heat storage system. According to the invention, the peak regulation flexibility of the coal-fired unit is improved, the energy density, the electricity-heat conversion efficiency and the economic recovery period of the heat storage device are also improved, and the over-low load operation of the unit can be prevented so as to improve the efficiency and the service life.

The invention belongs to the technical field of energy conservation and emission reduction of sintering circular coolers, and particularly relates to a sintering circular cooler medium-temperature area cross circulation combined waste heat total recovery and zero emission system which comprises a circular cooler, a circular cooling air blower, a waste heat boiler, a circulating fan, a steam turbine generator unit, a condenser and a condensate pump. The waste heat boiler is formed by combining two sets of waste heat boilers, one set of waste heat boiler is a first-section and second-section waste heat boiler, flue gas is taken from a first section and a second section, and exhaust air at the bottom of the first-section and second-section waste heat boiler returns to the first section and the second section through a circulating fan; the other set of waste heat boiler is an overhead three-section waste heat boiler, flue gas of the three-section waste heat boiler is taken from a third section, exhaust air of the three-section waste heat boiler returns to a fourth section, and flue gas of the fourth section returns to the third section; the two waste heat boilers are communicated with a steam supplementing opening of the steam turbine generator unit. The system has the advantages that a new waste heat utilization steam and hot water circulation system is constructed by utilizing the steam supplementing and condensing type steam turbine, and zero emission is realized.

The present application relates to the technical field of energy storage, and relates to an energy storage system based on thermochemical energy storage and Rankine cycle and an operation method. The energy storage system comprises a storage device, an energy storage device, an energy release device and a power generation device. The energy storage device comprises a calcium carbonate rotary calcining kiln, a first heat exchanger network and an electric heater, and the structural components are sequentially connected. The electric heater is used to convert excess electricity into heat energy, the calcium carbonate decomposition reaction is carried out in the calcium carbonate rotary calcining kiln, the heat energy is converted into chemical energy stored in calcium oxide, the energy release device is used to convert the chemical energy stored in calcium oxide into heat energy, the heat energy is converted into electricity by the power generation device, and the electricity demand of the terminal user is met. The energy storage system provided by the present application can realize the conversion, transmission and storage of different energies, has high energy conversion efficiency, can effectively reduce the coal consumption in the energy conversion process, and meets the energy saving and carbon reduction and flexibility reconstruction requirements of coal-fired power plants.

The invention relates to the technical field of boiler equipment, in particular to a detachable layered shell electrode type boiler superheater which comprises a bottom frame, stand columns, coiled pipe discs, a mounting frame, a supporting frame, an air inlet pipe and an air outlet pipe, the bottom frame is of a square rigid structure, the stand columns are connected to the four corners of the bottom frame, and the coiled pipe discs are steam circulation pipe bundles; five coiled pipe discs are arranged in a layered mode in the vertical direction, the installation frame is assembled between the two symmetrical stand columns in a sliding mode, the supporting frames are arranged in a layered mode in a pairwise opposite attaching mode and support and limit the coiled pipe discs on each layer, and arc-shaped grooves are formed in the installation frame at intervals. The coiled pipe disc adopts a layered detachable design and is independently limited and fixed by the mounting rack, when the outer wall of the pipe disc is coked or accumulated with dust, the connection can be conveniently removed, and the mounting rack can be disassembled along the upright post, so that the single-layer or multi-layer pipe disc can be independently cleaned or replaced, the maintenance difficulty and the workload are obviously reduced, and the working efficiency is improved. And the long-term heat exchange efficiency and the operation safety of the superheater can be effectively ensured.

The invention belongs to the technical field of combined heat and power generation units, and particularly relates to a combined heat and power generation unit peak regulation system with an ultrahigh-temperature heat pump coupled with fused salt energy storage. According to the technical scheme, in the heat storage process, a combined heat and power generation unit operates under the lowest load working condition, a boiler is in the lowest stable combustion load, a certain amount of main steam is extracted to heat fused salt, sensible heat of the main steam is stored in the fused salt, and the main steam obtained after heat exchange is decompressed through a pressure reducing valve and then supplied to low-pressure steam; meanwhile, low-temperature steam serves as a low-temperature heat source in the ultra-high-temperature heat pump system with air as a circulating medium, steam flowing out of a boiler low-temperature reheater enters a low-temperature heat exchanger to heat the air, the steam obtained after heat exchange continues to enter a boiler high-temperature reheater to absorb heat to become reheated steam, and then the reheated steam enters a steam turbine intermediate-pressure cylinder to do work; meanwhile, a motor in the ultra-high-temperature heat pump system can consume the cogeneration unit to generate power, and the purpose of zero-load output is achieved. In the heat release process, heat stored by the fused salt is released into feed water to generate high-temperature and high-pressure steam and reheat steam which enter a high-pressure cylinder and an intermediate-pressure cylinder of a steam turbine to do work, and the load rising rate and the peak power generation capacity of the unit are improved; and meanwhile, part of the generated high-pressure steam and low-pressure steam are supplied externally, so that the requirement of industrial steam is met. The problems that in the peak regulation process of the cogeneration unit, the peak regulation capacity is small, and the boiler operation safety and external supply industrial steam parameters under the low load are limited are solved.

A method for retrofitting an installation of a type used for a hybrid propulsion system for LNG carriers, said method being based on the steps of retrofitting an LNG carrier boiler of the installation, retrofitting an existing exhaust gas outlet and integrating a new exhaust gas outlet, forming an opening in the combustion chamber of said LNG carrier boiler, introducing exhaust gas from a GTPG inside the formed opening and adding a second superheater inside the exhaust gas outlet between said GTPG and said LNG carrier boiler, integrating an auxiliary steam and water system and integrating an automatic changeover extraction system and connecting both systems to said hybrid propulsion installation.

The invention discloses a gas-solid separation type sintering machine vertical pipe superheater device, which belongs to the technical field of sintering and comprises a sintering machine tail air bellow, a gas-solid separation tee joint, a settling pipe, a superheater and a large flue. And one port of the gas-solid separation tee joint is communicated with a tail air box of the sintering machine. And the upstream end of the settling pipe is communicated with one port of the gas-solid separation tee joint. And the upstream end of the superheater is communicated with one port of the gas-solid separation tee joint. And the large flue is respectively communicated with the downstream end of the settling pipe and the downstream end of the superheater. After flue gas enters the gas-solid separation tee joint from a tail air box of the sintering machine, a gas purification path and a dust removal path are formed by the tee joint structure. Dust-containing particles of the flue gas flow along the direction of the settling pipe under the blocking and gravity effects of the structure of the gas-solid separation tee joint, so that large particles are settled. And the dust content of airflow after particle separation is remarkably reduced, and the quality of flue gas entering the superheater is greatly improved.

In systems that control the amount of water vapor generated by electricity, damage to the water vapor generation unit is prevented. [Solution] The system comprises a steam generation unit 2 that generates steam from water by induction heating a spiral first conductor tube 21, a superheated steam generation unit 3 that generates superheated steam from steam by induction heating a spiral second conductor tube 31, a control unit 61 that controls the amount of steam generated by the steam generation unit 2 according to the amount of electricity supplied to the steam generation unit 2, and a safety device 12 that prevents damage to the steam generation unit 2 or the superheated steam generation unit 3 based on the pressure or temperature of the steam in the steam generation unit 2. The first conductor tube 21 has a spirally wound first winding tube section 21a, the second conductor tube 31 has a spirally wound second winding tube section 31a, and the safety device 12 is provided in the first winding tube section 21a, or in the connecting tube section CP that connects the first winding tube section 21a and the second winding tube section 31a.

The utility model discloses an overheating heat supply system, which relates to the technical field of heat supply, and comprises a waste heat boiler drum for a heating furnace in a steel rolling workshop, an inlet of the steam compressor can be communicated with an outlet of the waste heat boiler drum; according to the steam vacuumizing device for the vacuum refining device of the electric furnace steelmaking workshop, a high-pressure gas inlet of the steam vacuumizing device can be communicated with an outlet of the steam compressor, and an air suction port of the steam vacuumizing device is used for being communicated with the interior of a furnace body of the vacuum refining device. The problems that steam generated by a waste heat pot of a heating furnace in a steel rolling workshop is generally low in pressure and cannot be efficiently utilized, and a vacuum refining device in an electric furnace steelmaking workshop cannot obtain a large amount of low-pressure superheated steam at low cost for vacuumizing can be solved.

The application discloses a kind of heating and processing device for fine slag fluid of pulverized coal gasification, belong to the field of fine slag fluid resource utilization of pulverized coal gasification, including main combustion chamber, secondary combustion chamber and shaft flue;Between main combustion chamber and secondary combustion chamber, and between secondary combustion chamber and shaft flue are provided with cyclone separator, the back material part of the cyclone separator is communicated with main combustion chamber, and energy recovery part is further provided in the shaft flue, and the energy recovery part is communicated with main combustion chamber, and the fuel of the main combustion chamber is the fine slag generated after pulverized coal gasification;The fine slag after pulverized coal gasification is burned by the main combustion chamber, and the energy in tail gas is recovered and filled into main combustion chamber for secondary use by energy recovery part;Secondary combustion chamber is simultaneously used to burn material again, to realize the resource utilization of fine slag after pulverized coal gasification, solid particles and gas are separated by cyclone separator, and solid particles are burned again in main combustion chamber, so that fine slag after pulverized coal gasification is burned more fully.

The invention discloses a coal-fired power generation system for coal power unit structure reconstruction and thermodynamic system reconstruction, which comprises a power generator and two steam turbines, and the power generator is connected in series between the two steam turbines; a steam outlet of the superheater is connected with steam inlets of high-pressure cylinders of the two steam turbines through a main steam pipeline, and steam outlets of the high-pressure cylinders are connected with a steam inlet of the reheater through a reheating cold section steam pipeline. A steam outlet of the reheater is respectively connected with steam inlets of intermediate pressure cylinders of the two steam turbines through reheating hot section steam pipelines; the system further comprises a heat storage system, a superheated steam pipeline is led out of the main steam pipeline or the reheating hot section steam pipeline and connected with the heat storage system, the heat storage system is connected with the deaerator through a drainage pipeline, and two heating sections are formed on the boiler water supply pipeline and connected with the heat storage system to heat supplied water. On the premise of economic conditions and intrinsic safety, coal power deep peak regulation, efficient regulation and wide-load efficiency protection are achieved.

The utility model relates to an integrated circulating fluidized bed boiler. The integrated circulating fluidized bed boiler comprises a feeding device, a hearth, an air chamber, a material returning device, a hot water boiler drum, a separating device, a horizontal flue, a steam boiler drum, a tail flue, a steam outlet header, an SCR device, an air pre-heater, a smoke outlet, a connecting flue, a hot water boiler heating surface and a steam boiler heating surface. According to the integrated circulating fluidized bed boiler, the heating surface required by the hot water boiler and the heating surface required by the steam boiler are integrated and arranged in the integrated circulating fluidized bed boiler, and the integrated circulating fluidized bed boiler can generate superheated steam while producing hot water. Hot water generated by the boiler is externally supplied to users, and generated superheated steam can be used for driving an industrial steam turbine so as to drive a high-power water pump motor and a fan motor arranged on the boiler. According to the utility model, the total power consumption of a heat source plant can be greatly reduced, and the backpressure steam exhausted by the industrial steam turbine can be completely used for heat supply, so that the system has obvious economic benefits.

The embodiment of the utility model provides a dry quenching boiler and a dry quenching system.The dry quenching boiler comprises a boiler body, at least one superheater, at least one evaporator and at least one observation device, and the boiler body is provided with a smoke inlet and a smoke outlet; the at least one superheater and the at least one evaporator are sequentially arranged in the furnace body at intervals, and the superheater is arranged on the side, close to the smoke inlet, of the evaporator; the observation device is arranged on the side wall of the furnace body and located on the overheating section, the overheating section is located between the evaporator and the smoke inlet, and the working condition of the overheating section can be observed through the observation device. In the embodiment of the invention, if the coke powder is subjected to secondary combustion in the overheating section, a worker can intuitively see the flame in the furnace body through the observation device.

The invention discloses a supercritical gas-fired boiler based on tower type arrangement and a thermal optimization control method, and relates to the field of supercritical gas-fired boilers, the supercritical gas-fired boiler comprises a hearth, a burner, a water cooling wall, a heating surface in the boiler, a header outside the boiler, an economizer and a tubular air preheater. The periphery of the hearth is wrapped by an ash bucket water-cooled wall, a spiral tube coil water-cooled wall and a vertical tube coil water-cooled wall, in-furnace heating surfaces are sequentially arranged in the smoke flowing direction and are suspended through in-furnace suspension tubes, and an out-furnace collecting box is suspended through out-furnace suspension tubes; the economizer is divided into an upper stage and a lower stage, is arranged by adopting sequential tube bundles and is provided with a bypass, and a denitration reactor is arranged between the upper stage and the lower stage; the suspension pipe is made of high-strength alloy steel, a working medium flows in the suspension pipe, and a heating surface and related parts are made of alloy materials with adaptive performance. The invention has the technical effects of high safety of the wall temperature of the heated surface, small deviation, small occupied area, low smoke, wind, steam and water resistance, smooth expansion system, adaption to the rapid variable load requirement, excellent environmental protection property, reliable operation and the like.

The invention discloses a water pipe type two-return-stroke energy-saving and emission-reducing superheater assembly of a traditional boiler, and relates to the superheater assembly researched and developed according to the wide-capacity radiation heat exchange concept of a boiler hearth and the physical phenomenon outside the field (see the specification in details) capable of generating extremely few nitrogen oxides, and a traditional boiler body with the modified hearth. After the flange pipelines are connected and combined, the technical advantages brought by obvious technical characteristics are derived: the heat efficiency is improved by about 6-8%, the steel consumption is reduced by about 20%, and the cost is reduced by 30% due to the application of the boiler hearth tolerance radiation heat exchange concept; forced circulation medium water is in a water pipe of the two-return-stroke energy-saving emission-reducing superheater assembly, the heat exchange second flow speed is increased to about 1.5 m, the technical characteristic completely meets the requirement of physical phenomena outside the field capable of generating extremely few nitric oxides, and the purpose of ultralow nitrogen emission of the nitric oxides smaller than or equal to 15 / 25 milligrams is achieved; meanwhile, other technical problems of the product in the background technology are solved.

The invention discloses a steam heating and pressurizing device and method.The device comprises a superheated steam generation module and a steam pressurizing module, and the superheated steam generation module comprises a first heat exchanger and a heating part arranged outside the first heat exchanger; the steam pressurization module comprises a second heat exchanger; a water storage container; a booster water pump; a first output pipe; a second output pipe; and a proportioning valve. According to the system, exquisite heat energy internal circulation is formed in the system, heat source consumption is greatly reduced, low-energy-consumption heating and pressurizing treatment of low-temperature steam is achieved, meanwhile, by means of the temperature and humidity differences of the steam at different height positions in the tank body, two kinds of steam with different humidity and temperature are mixed through the proportioning valve according to the set proportion, and the temperature and humidity difference of the steam at different height positions in the tank body is adjusted. Therefore, the temperature and the humidity of the finally output steam are continuously and accurately adjusted to meet different requirements, and the flexibility and the wide applicability of the whole system are improved.

This invention discloses a system and method for improving the output of a linear Fresnel molten salt solar thermal power plant, comprising a low-temperature molten salt tank, a high-temperature molten salt tank, a medium-temperature molten salt buffer tank, a linear Fresnel solar collector field, a low-temperature temperature regulating pump, a medium-temperature temperature regulating pump, a low-temperature molten salt pump, and a high-temperature molten salt pump. During the power plant startup or low-irradiation phase, the medium-temperature molten salt at the collector field outlet that has not reached the target temperature is temporarily stored in the medium-temperature molten salt buffer tank to prevent the medium-temperature molten salt from mixing into the high-temperature molten salt tank and causing a decline in the quality of the high-temperature molten salt. During the high-irradiation phase, the qualified high-temperature molten salt is introduced into the high-temperature molten salt tank. Simultaneously, the medium-temperature molten salt in the buffer tank is mixed with the low-temperature molten salt from the low-temperature molten salt tank according to a calculated ratio, and after temperature adjustment, it is pumped back into the collector field for secondary heating to reach the qualified high-temperature molten salt. This ensures that high-quality superheated steam is provided to the turbine during peak irradiation periods, ultimately improving the annual power generation of the power plant, especially the unit's operating rate and output level in winter.

The invention discloses a high-sulfur high-humidity flue gas waste heat boiler anti-corrosion adjusting method adaptive to an activated carbon production line, and the method comprises the steps: collecting flue gas whole-process temperature data in real time through multi-point temperature monitoring, and automatically adjusting the opening and closing degree and water supply flow of a flue gas valve by a DCS control module based on a preset acid dew point threshold value; flue gas flowing paths are flexibly switched, the commissioning state of the economizer is controlled, it is ensured that the boiler exhaust gas temperature is not lower than the acid dew point + 30 DEG C, and formation of acid condensate is inhibited from the source. Meanwhile, the method prolongs the service life of the waste heat boiler, guarantees stable operation of a production line, and is suitable for a high-sulfur and high-humidity flue gas treatment scene of a rotary kiln type activated carbon production process.

The utility model discloses a kind of overheat steam generators based on ultrasonic atomization, including the container of one end opening, ultrasonic atomizer being arranged in the container, mist heater being arranged in the open end of the container, the mist heater is communicated with outside atmosphere;The ultrasonic atomizer is atomized to raw water added in the container and generates mist;Mist heater is provided with porous channel and heating element coated in the outer wall of the porous channel, the mist in the container enters the porous channel and becomes overheat steam after being heated and is discharged.The device of the utility model can generate overheat steam under normal pressure, simple structure, low in cost.

The denitration and dust removal integrated biomass grate boiler comprises a second flue, a third flue and a fourth flue which are sequentially connected with an outlet of a hearth, the lower end of the second flue is communicated with the lower end of the third flue, and the upper end of the third flue is connected with the upper end of the fourth flue through a furnace top turning flue. A first platen superheater is arranged at the upper part of the hearth, a second platen superheater is arranged in the second flue, a coiled pipe superheater is arranged in the third flue, and denitration equipment, an economizer and a tail heating surface are sequentially arranged in the fourth flue according to the flowing direction of flue gas; dust removal equipment is arranged in the furnace top turning flue, and the dust removal equipment and denitration equipment are supported on a boiler body steel frame. The dust removal equipment and the denitration equipment are also arranged in the range of the boiler body, so that compared with the prior art, the lengths of the inlet flue and the outlet flue are greatly shortened, the heat dissipation loss is reduced, the boiler efficiency is improved, and the dust removal and denitration effects can be improved; and the floor area is small, and the construction cost is low.

The invention relates to a diesel methanol dual-fuel engine lean-burn system combined with a heat and power combined supply circulating system and an energy comprehensive utilization method, and the diesel methanol dual-fuel engine lean-burn system comprises a pre-combustion chamber, a dual-fuel injector system, a methanol injection system, an exhaust back pressure adjusting system, the heat and power combined supply circulating system and the like. The fuel injection precision control of the engine is realized through a dual-fuel injector system and a methanol injection system, two working modes of a pure diesel oil combustion mode and a dual-fuel combustion mode are realized, and lean combustion of the engine is realized by adopting an exhaust backpressure adjusting system and micro-injection ignition of a pre-combustion chamber. A combined heat and power supply circulating system is adopted to meet the electric energy and heat energy requirements of the system, and meanwhile engine combustion pollutant emission is reduced. And the economical efficiency, the dynamic property and the environmental protection property of the system under the full-working-condition operation condition are improved.

The utility model provides an air pocket steam superheating treatment device which comprises a gasification furnace, saturated steam, a boiler water pipeline, a boiler water circulating pump, a medium-pressure air pocket, a steam emptying pipe, saturated steam, a steam emptying pipe, a superheated steam pipe network, a synthesis tower and a steam superheater, the saturated steam comes from synthesis, and the saturated steam comes from conversion, saturated steam is connected with the middle of the gasifier; the upper part of the medium-pressure air bag is connected with saturated steam; a boiler water pipeline is connected with the lower part of the medium-pressure air pocket; a boiler water pipeline is connected with the upper part and the middle part of the gasifier after passing through a boiler water circulating pump. According to the steam superheat treatment device for the air pocket, the load of the thermoelectric boiler can be reduced by improving the superheat degree, so that the use amount of fuel coal is reduced.

The invention discloses a biomass afterburning tower-type photo-thermal power generation system and an operation method, and belongs to the technical field of photo-thermal power generation. The biomass afterburning tower-type photo-thermal power generation system comprises a molten salt loop, a water loop and an afterburning loop; the afterburning loop comprises a biomass afterburning system, a fused salt heater, a superheated steam heater, a reheated steam heater and a feed water heater; high-temperature flue gas formed in the biomass afterburning system exchanges heat with fused salt in the fused salt loop and superheated steam and reheated steam in the water loop through the fused salt heater, the superheated steam heater and the reheated steam heater to form medium-temperature flue gas. And the medium-temperature flue gas exchanges heat with feed water through a feed water heater to form low-temperature flue gas which is used for improving the quality of biomass. The system is suitable for a tower type system with high weather fluctuation sensitivity, fused salt in the fused salt loop and superheated steam and reheated steam in the water loop are heated through heat generated in the afterburning loop, and therefore the heat storage amount in the high-temperature fused salt tank is guaranteed, the efficiency of a steam turbine is improved, and energy waste and pollutant emission are reduced.

The utility model relates to a boiler air preheater technical field discloses a kind of high-efficiency heat recovery type boiler air preheater. To solve the technical problem of the heat exchange efficiency of conventional air preheater in prior art is lower, especially when handling high-temperature flue gas, heat recovery is not sufficient. The boiler of the utility model includes hearth for fuel combustion to generate high-temperature flue gas, the outlet of hearth is sequentially provided with superheater, economizer and at least one air preheater along flue gas flow direction;Steam inlet end of superheater is connected with steam drum outlet, superheater outlet end is connected with superheated steam output pipeline, steam drum lower part is connected with hearth water-cooled wall, inlet of steam drum is connected with economizer, economizer feedwater inlet is communicated with water source, air preheater is located in downstream flue gas passage of economizer, air inlet of air preheater is connected with air supply fan. The utility model significantly increases heat exchange area and fluid residence time by wide channel design and S-shaped flow path, improves heat exchange efficiency.

A method includes combusting a fuel with oxidizer gas to heat a fired radiant section, forming a flue gas, forming a process gas, and passing the process gas through the fired radiant section, forming a cracked gas. The flue gas is cooled in a flue gas heat recovery section. The cracked gas is cooled in a cracked gas heat recovery section. The recovery sections each comprise a multistream heat exchanger. The flue gas heat recovery section includes heat exchange structures which a use more than 35% of a total amount of heat recovered within the heat exchanger of the flue gas heat recovery section for preheating the oxidizer gas. The cracked gas heat recovery section uses more than 35% of a total amount of heat recovered within the heat exchanger of the cracked gas heat recovery section for preheating the process gas, the hydrocarbon feed, and / or the process steam.

The application belongs to the technical field of solar energy coupling jet-main cycle, and provides a solar energy coupling jet-main cycle system and a control method. According to the solar radiation intensity and scene demand, the solar energy direct heating mode, the solar energy coupling jet heating mode and / or the CO2 double-stage compression cycle heating mode are coupled to enter the combined working mode, so that the best working condition is ensured in the variable environment, and the maximum heating capacity is obtained with the minimum energy consumption. Through reasonable allocation of multiple working conditions, the application realizes multiple modes such as solar energy heating, CO2 double-stage compression heating, solar energy jet heating, solar energy jet CO2 coupling heating and the like.