630results about "Steam superheaters" patented technology

A molten salt heating direct-flow type wet saturated steam generation system, comprising an evaporation device, a molten salt conveying device, a preheating device, a softened water conveying device, and a dryness adjustment device. The evaporation device is provided with a first heat exchange pipeline and a second heat exchange pipeline; the molten salt conveying device comprises a molten salt conveying apparatus and a molten salt recovery apparatus; the preheating device is provided with a first preheating pipeline, and an outlet of the second heat exchange pipeline is connected to a steam output pipeline; and the dryness adjustment device comprises an adjustment member and a dryness measurement apparatus. According to the steam generation system provided by the present invention, the temperature of softened water and the temperature of molten salt can be adjusted to appropriate ranges, avoiding the crystallization of the molten salt; moreover, the dryness of wet saturated steam can be controlled by means of coarse adjustment and fine adjustment, and the direct-flow type evaporation device is suitable for softened water having poor quality so as to meet the steam injection requirements of oil fields.

Disclosed is a marine fuel cell-based integrated heat, electricity, and cooling supply system comprising a power supply system and a waste heat recovery system; the power supply system comprises wind turbine generator sets, solar generator sets, and a fuel cell power module; the waste heat recovery system encompasses a turbine power generation module and a lithium bromide refrigeration module; the fuel cell power module is connected to both the turbine power generation module and the lithium bromide refrigeration module; the turbine power generation module is used to generate electricity using waste heat. This approach fully exploits the waste heat from the exhaust gas generated by the fuel cell power module, resulting in a high overall energy utilization rate. The self-consumption electricity and pure hydrogen fuel for the integrated energy supply system can be obtained from solar and wind energy, ensuring low carbon emissions for the entire system.

Conduction oil is adopted as a heat-carrying medium of a boiler tail flue gas heat recoverer and an external air pre-heater, flue gas low-temperature corrosion is effectively avoided, meanwhile, efficient recycling of waste heat of flue gas of the steam boiler is achieved, and the steam boiler is compact and convenient to install and arrange. The composite heat-carrying type steam boiler is characterized in that the steam boiler adopting water as a heat-carrying medium and the heat-conducting oil boiler adopting heat-conducting oil as a heat-carrying medium are combined, and the composite heat-carrying type steam boiler has a good application prospect.

The utility model provides a flexible peak shaving system for a fused salt energy storage coupling thermal power generating unit. The flexible peak shaving system comprises a thermal power generation system, a fused salt heat absorption unit, a fused salt storage unit and a fused salt heat release unit. In the peak regulation stage of the thermal power generating unit, the fused salt heat absorption unit operates, part of main steam is extracted to serve as a heat source and exchanges heat with fused salt to achieve fused salt heat absorption, meanwhile, the fused salt heat release unit operates, a first steam return pipe is opened and used for supplementing boiler reheat steam, the problem of boiler cold overtemperature during fused salt energy storage is solved, and the system can operate smoothly and safely. When the thermal power generating unit operates at the peak, the fused salt heat release unit operates, the fused salt heat absorption unit does not operate, the first steam return pipe is closed, high-temperature fused salt heats supplied water shunted by the water supply unit to generate steam, and the steam converges to a main steam pipeline and / or a reheat steam pipeline through a pipeline and / or exchanges heat with condensate water of the water supply unit through the pipeline. And the molten salt heat release process is realized.

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.

A master-slave type multi-unit cooperative decoupling system comprises a master unit thermodynamic system, a slave unit thermodynamic system and a decoupling steam supply main pipe. Each of the driving unit and the subordinate unit is a thermodynamic system composed of a boiler, a high-pressure cylinder, an intermediate-pressure cylinder and a low-pressure cylinder. A hot end outlet of the boiler reheater of the active unit is connected with a decoupling steam supply main pipe, and the decoupling steam supply main pipe is connected with a cold end inlet of the reheater of the slave unit; the driving unit assists the subordinate unit in performing machine-boiler decoupling operation by outputting reheated steam; on the basis, if machine-furnace decoupling transformation is carried out on the active unit, whole-plant decoupling can be achieved; the system is simple in configuration, reliable in switching and good in cost performance; and under the decoupling working condition, the decoupling high bypass is opened, the flow is large, the steam turbine flow is small, and when the steam turbine jumps, the original high bypass flow is small, and the impact degree on the boiler is weakened.

The invention belongs to the technical field of fused salt energy storage, and particularly relates to a thermal power generating unit deep peak shaving system and method of a fused salt heat storage coupling high-temperature heat pump. In the high-generation time period of renewable energy sources, the load of a thermal power generating unit needs to be reduced, at the moment, a boiler operates at the lowest stable combustion load, a fused salt heat storage system is added, all main steam is extracted to enter the heat storage system to heat fused salt, a high-pressure cylinder of a steam turbine is stopped, and an intermediate-pressure cylinder and a low-pressure cylinder of the steam turbine operate under the low-load working condition; the output load of the unit only meets the plant power, and the load is not output to the power grid; in the load rising time period, heat stored by the fused salt heat storage system is used for generating steam in the unit load rising stage to increase the unit steam turbine load rising rate and peak power generation; the problems of operation safety and low energy grade in the unit peak regulation process are solved. In the peak period of electricity utilization, heat stored in the fused salt heat storage system is released into the unit, and the output load of the unit is rapidly increased. An outlet of the deaerator serves as a water taking point, part of supplied water is extracted to pass through the preheater, the evaporator and the superheater to generate high-temperature and high-pressure steam, the high-temperature and high-pressure steam enters a high-pressure cylinder of the steam turbine to do work, and therefore the output load of the steam turbine is rapidly increased. The invention provides a thermal power generating unit deep peak regulation system and method of a fused salt heat storage coupling high-temperature heat pump, and aims to realize deep peak regulation of a unit and power generation by absorbing renewable energy sources such as wind and light.

The electric steam boiler system is characterized in that a water supplementing pipeline is connected with an electrode boiler through a fourth valve, the output of the electrode boiler is connected with a spherical tank through a pipeline and a first valve, and saturated steam directly discharged from the spherical tank is connected with a user side through a pipeline and a tenth valve; and the output of the spherical tank passes through the solid energy storage superheater before being connected with the user side through a pipeline and a third valve. The system is high in energy storage efficiency, long in service life and high in safety, the solid energy storage superheater directly heats saturated steam stored in the spherical tank, simultaneous charging and discharging can be achieved, the electric steam boiler system can rapidly adapt to changes of different heat using scenes and requirements, and the electric steam boiler system can produce both saturated steam and superheated steam.

The invention provides a subcritical boiler platen reheater clamping pipe leakage prevention method, device and equipment. The subcritical boiler platen reheater clamping pipe leakage prevention method comprises the steps that dissimilar steel welding connection of a clamping pipe and a pulling plate is relieved; assembling a pipe ring on the outer wall of the clamping pipe to form non-welding type mechanical isolation, and welding and fixing a pulling plate on the outer wall of the pipe ring to complete reconstruction of a stress conduction path; after reconstruction is completed, a two-factor monitoring mechanism for spheroidizing degradation of the clamping pipe and temperature fluctuation of the screen reheater is established; monitoring data are collected based on a two-factor monitoring mechanism, and combustion parameter pre-adjustment and pipeline preventive replacement are dynamically triggered; according to the method, the leakage correlation event is periodically analyzed, the coal blending combustion and maintenance strategy is reversely optimized, the problem that leakage is likely to be caused in a traditional welding mode is solved by removing welding and completing stress conduction path reconstruction, faults can be warned in advance through two-factor monitoring and periodic analysis, and the possibility of leakage is reduced.

The invention discloses an evaporation and overheating integrated heat exchanger and a superheated steam generation method.The heat exchanger comprises a horizontal shell and a partition plate arranged in the shell and provided with evaporation holes, the partition plate divides the shell into an evaporation cavity and an overheating cavity, and a first heating assembly is arranged in the evaporation cavity of the shell; the second heating assembly is arranged in the overheating cavity of the shell, and the liquid inlet and the steam outlet are formed in the upper portion and the lower portion of the same end of the shell. During use, water is guided into the evaporation cavity through the liquid inlet; starting the first heating assembly and the second heating assembly; the first heating assembly is used for heating water in the evaporation cavity to generate steam; steam enters the overheating cavity through the evaporation holes and is output through the steam outlet after being heated into superheated steam by the second heating assembly. The device is small in occupied area, compact in structure and small in pressure loss in the steam evaporation process; the partition plate is creatively used as the gas-liquid separator, and an independent gas-liquid separator is not needed. Therefore, the evaporation efficiency is high, and the quality of the generated steam is good.

The invention relates to a wide-load efficient coal power unit thermodynamic system and a wide-load efficient coal power unit thermodynamic system control method. The wide-load efficient coal power unit thermodynamic system comprises a front high-pressure cylinder and a rear high-pressure cylinder. The front steam admission amount and the front through-flow area of the front high-pressure cylinder are smaller than the rear steam admission amount and the rear through-flow area of the rear high-pressure cylinder, and the steam admission amount sum of the front steam admission amount and the rear steam admission amount meets the rated working condition use requirement of the wide-load efficient coal power unit thermodynamic system. A first valve is arranged on a first main steam transmission branch where the front high-pressure cylinder is connected with the main steam transmission pipeline, a second valve is arranged on a second main steam transmission branch where the rear high-pressure cylinder is connected with the main steam transmission pipeline, and a third valve is arranged on a first steam exhaust pipeline where the front high-pressure cylinder is connected with the rear high-pressure cylinder. The connection state comprises a series connection state and a parallel connection state, and the wide-load operation efficiency of the wide-load efficient coal power unit thermodynamic system can be effectively improved.

The invention discloses a thermochemical energy storage system and method of an integrated heat pump, an outlet of a water storage tank is communicated with a shell side inlet of a thermochemical reactor through a first water pump and a pipe side of a steam generator, and a shell side outlet of the thermochemical reactor is communicated with an inlet of the water storage tank through a shell side of a preheater and a pipe side of a waste heat recoverer; an outlet of the second water pump is divided into two paths, one path is communicated with the pipe side of the thermochemical reactor, the other path is communicated with the pipe side of the high-temperature heat exchanger through the pipe side of the preheater, and an outlet of the compressor is communicated with an inlet of the expansion machine sequentially through the shell side of the steam generator and the shell side of the high-temperature heat exchanger. And an outlet of the expansion machine communicates with an inlet of the compressor through the shell side of the waste heat recoverer. By means of the system and method, heat can be effectively recovered.

The invention relates to a waste heat gradient recovery system and a non-ferrous metal smelting system. The waste heat gradient recovery system comprises a heat exchanger, a deaerator, a coal economizer, a fire smelting waste heat boiler, a superheater and a high-pressure pump, and the heat absorption side of the heat exchanger, the deaerator, the coal economizer, a heat absorption side pipeline of the fire smelting waste heat boiler and the superheater are sequentially communicated. The high-pressure pump is arranged between the deaerator and the economizer, so that the demineralized water sequentially exchanges heat and recovers waste heat of the low-temperature area of the sulfuric acid dry absorption section, the low-temperature area of the sulfuric acid conversion section, the pyrometallurgy section and the intermediate-temperature area of the sulfuric acid conversion section. According to the waste heat gradient recovery system, low-grade waste heat in the non-ferrous metal smelting system is recovered, the waste heat recovery efficiency is improved, the steam yield is also improved, superheated steam with high-grade heat energy is finally produced by recovering different grades of waste heat, subsequent steam utilization is facilitated, and the utilization rate of the superheated steam is improved. And the energy consumption in the waste heat gradient recovery system is also reduced.

The invention provides a heat pump coupling fused salt energy storage system and method suitable for peak regulation of a thermal power generating unit, a thermal power generating unit comprises a boiler and a multi-stage steam turbine assembly, the output end of the boiler is communicated with the multi-stage steam turbine assembly, and a heat storage subsystem comprises a high / low-temperature fused salt storage tank and a first / second heat exchanger assembly. The output end of the boiler further communicates with a steam-water channel inlet of the second heat exchanger assembly, an outlet of the multi-stage steam turbine assembly communicates with a water supply pipeline, and the water supply pipeline communicates with the input end of the boiler and a steam-water channel inlet of the first heat exchanger assembly. In the heat storage period, part of high-temperature steam output by the boiler is conveyed to the multi-stage steam turbine assembly, and the remaining high-temperature steam is distributed to the second heat exchanger assembly to be used for heating the low-temperature fused salt. In the heat release period, steam output by the multi-stage steam turbine assembly is condensed to form feed water, the feed water is transmitted to the first heat exchanger assembly, high-temperature steam is formed and flows back to the multi-stage steam turbine assembly, and the multi-stage steam turbine assembly is driven to do work to generate power.

The present invention provides a water-vapor heat exchange system, a movable steam injection boiler and a steam injection method thereof, which include a water heat exchanger located between a water pump and the convection section of the boiler, a flue gas heat exchanger located in the convection section of the boiler, and a radiation section heat exchanger located in the radiation section of the boiler. The water heat exchanger includes an inner heat exchanger tube and an outer heat exchanger tube that exchange heat with each other and are respectively used for the circulation of water medium. The inner heat exchanger tube, the flue gas heat exchanger, the outer heat exchanger tube and the radiation section heat exchanger are sequentially connected along the direction of water medium circulation. After the water medium absorbs heat in the convection section, it enters the water heat exchanger as a heat source to heat the water medium that has not entered the convection section, so that its temperature rises and exceeds the dew point temperature, so as to avoid the low-temperature corrosion of the finned tube by the flue gas. A superheat section is connected at the flue gas outlet of the radiation section, and a superheat section heat exchanger for further heating and evaporating the water medium is arranged in the superheat section. The wet saturated steam coming out of the radiation section is continuously heated and evaporated through the superheat section heat exchanger, ensuring the steam injection effect on the oil well.

The invention discloses a superheated steam boiler system for burning yellow phosphorus tail gas, which comprises a yellow phosphorus combustion zone (1), a first radiation heat transfer zone (2), a second radiation heat transfer zone (3), a variable cross-section connecting flue (12), a first evaporator (4), a superheater (5), a second evaporator (6), a waste heat steam boiler (7), and an induced draft fan, characterized in that a first lattice wall (9) is arranged between the yellow phosphorus combustion zone and the first radiation heat transfer zone, a second lattice wall (10) is arranged between the first radiation heat transfer zone and the second radiation heat transfer zone, a third lattice wall (11) is arranged between the second radiation heat transfer zone and the variable cross-section connecting flue, the flow areas of the first lattice wall, the second lattice wall, and the third lattice wall are different, and the variable cross-section connecting flue (12) comprises a gradually contracting section, a straight section, and a gradually expanding section connected in sequence. The invention can improve the heat exchange adequacy of flue gas, thereby improving the calorific value utilization rate of yellow phosphorus tail gas.

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 belongs to the field of metal welding materials, and discloses a gradient cladding layer for a superheater / reheater tube and a preparation method and application of the gradient cladding layer. The gradient cladding layer is characterized in that a bottoming laser cladding layer is formed on a superheater / reheater tube, an electric arc surfacing cladding layer is formed on the bottoming laser cladding layer, and the electric arc surfacing cladding layer is in direct contact with a hearth atmosphere; the bottoming laser cladding layer comprises the following components in percentage by weight: 30-40% of Ni, 22-25% of Cr, 5-8% of Mo, 0.8-2% of Nb, 0.5-1% of Si, 0.5-1% of Mn and the balance of Fe; the arc surfacing cladding layer comprises the following components: 40-45% of Cr, 16-19% of Fe, 12-15% of Nb, 8-10% of Mo, 3-4% of Ti, 1.5-2.5% of Al and the balance of Ni, and the total percentage is 100%. The gradient cladding layer disclosed by the invention is excellent in corrosion resistance and low in stress, and meets the safe service of the superheater / reheater.

The invention belongs to the technical field of control of thermal power generation boiler protection systems, and particularly relates to a boiler tripping prevention method and system for a steam turbine bypass system. When the unit load is smaller than 30% of the rated power (bypass capacity) and the bypass system of the unit is in a closed state, a steam turbine trips due to faults, and control logic enables a boiler not to trip and to keep a normal operation state by quickly opening a high bypass pressure regulating valve and a low bypass pressure regulating valve of the bypass system within set time; therefore, on one hand, the bypass system can ensure that the reheater of the unit has a certain steam flow, dry burning of the reheater is avoided, and the effect of protecting the reheater is achieved; and on the other hand, grid-connected power generation of the unit can be quickly recovered after the turbine fault is removed, so that the downtime is reduced, and the stability of the whole system is facilitated.

The invention discloses a thick oil well microwave-assisted steam oil extraction device and a using method thereof, the thick oil well microwave-assisted steam oil extraction device comprises an oil extraction lifting system connected with a steam injection system, and the thick oil well microwave-assisted steam oil extraction device is characterized by further comprising a microwave heating system connected with a shaft pipe column of the oil extraction lifting system. The microwave heating system comprises a microwave generating device, a microwave waveguide tube bundle and a microwave heating short section which are connected in sequence; the microwave generating and transmitting device can generate microwaves, and the microwaves are transmitted to the microwave heating short section through the microwave waveguide tube bundle. The temperature and dryness of high-temperature steam can be maintained when the high-temperature steam is conveyed along a shaft, the fluidity of thickened oil during extraction can be improved, and the requirement for heat preservation and dryness protection in the whole steam huff and puff extraction process of the thickened oil can be met.

This invention discloses a system for improving the efficiency of power generation and coupling heat supply using a gas-fired superheater with multiple steam sources. It belongs to the field of waste heat power generation technology in steel enterprises. To utilize waste heat steam sources of different qualities in steel enterprises for power generation, the system includes an electric furnace waste heat system (1), a converter waste heat system (2), a sintering waste heat system (3), a rolling mill heating furnace waste heat system (4), a steam storage tank (5), a gas-fired steam superheater (6), a power generation system (7), and a hot water storage tank (8). This system not only integrates waste heat steam sources of various parameters and qualities within the steel plant for power generation, but also recovers heat from the circulating cooling water of the generator set and supplies hot water externally, further improving the waste heat utilization rate.

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 discloses a sintering method and system for recycling sintering ring cooling waste gas, and the method comprises the steps: respectively feeding the ring cooling waste gas into a sintering front-section fan cover, a middle-section fan cover and a rear-section fan cover, and sintering the ring cooling waste gas according to the sintering requirements of the sintering front-section, middle-section and rear-section materials; after oxygen or steam is supplemented to the sintering front-section fan cover, the sintering middle-section fan cover and the sintering rear-section fan cover synchronously, waste heat is utilized, and then oxygen-enriched hot air capable of being directly used for sintering the front-section material surface, oxygen-containing hot air capable of being directly used for sintering the middle-section material surface and steam-enriched hot air capable of being directly used for sintering the rear-section material surface are obtained at the same time; and in the waste heat utilization process, high-parameter steam capable of being directly used for power generation, industrial hot water capable of being used in multiple sources and the like are obtained. According to the invention, waste heat recovery of sintering ring cooling medium-temperature and low-temperature waste gas is realized at low cost and high efficiency, the discharge amount of waste gas is obviously reduced, the sintering working condition is greatly enhanced, and the quality of a sintered ore product is obviously improved.

The present invention discloses a thermal energy utilization system, method and use for destroying waste propellant, including a waste propellant combustion system for converting the chemical energy of waste propellant into thermal energy; a steam-water system connected to the waste propellant combustion system for transferring the thermal energy to a power generation system; a power generation system connected to the steam-water system for converting the thermal energy into electrical energy and forming a cycle by being connected to the steam-water system; and a thermal energy utilization system connected to the power generation system for converting the thermal energy and forming a cycle by being connected to the steam-water system. The present invention can utilize the large amount of thermal energy released during the destruction and combustion process of waste propellant, avoiding waste of resources.

The utility model discloses a reheater convenient to disassemble and assemble, which relates to the technical field of boilers, and comprises a reheater main body and a disassembly and assembly frame, a limiting structure is arranged between the disassembly and assembly frame and the reheater main body, and the limiting structure comprises a limiting rod, a movable groove and a positioning component. According to the reheater main body transportation device, through the arrangement mode that the disassembly and assembly frame is matched with the limiting structure, the position of the reheater main body can be limited through the disassembly and assembly frame in the transportation process, so that direct collision between adjacent reheater main bodies can be avoided, the transportation safety of the reheater main body is improved, and the transportation efficiency of the reheater main body is improved. Meanwhile, the position of the reheater can be rapidly limited through the limiting structure, the reheater body and the disassembling and assembling frame are flexibly disassembled and assembled, the time of an auxiliary tool is shortened, the disassembling and assembling time of the reheater body and the disassembling and assembling frame is shortened, the convenience and efficiency of position disassembling and assembling of the reheater body are effectively improved, and the assembling and disassembling efficiency of the reheater body is improved. And therefore, convenience is provided for transportation and use of the reheater main body.

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 invention provides a supercritical circulating fluidized bed unit dry and wet state automatic conversion and whole-course water supply control system and method, and belongs to the technical field of automatic control. The problems of low automatic input rate, complex and difficult wet state control strategy, large dry and wet state conversion disturbance, load control breakpoints and the like in once-through boiler feed water control in the deep peak regulation coordinated variable load process of the unit are solved; the main steam flow is corrected by introducing the enthalpy value of the last-stage superheater and the enthalpy value of the outlet of the separator on the basis of a self-balancing water supply control strategy, the heat released / absorbed by the boiler is dynamically reflected, the balance of the heat load and the evaporation capacity of the boiler is guaranteed, and meanwhile the boiler bed temperature and the wall temperature of a certain area of the boiler are corrected in real time; according to the method, the same set of control strategy is adopted for water supply control in the dry state and the wet state of the boiler, and switching and transformation of water supply control modes are not needed. Meanwhile, power control and dry-wet state conversion control are combined, and continuous power control in the dry-wet state conversion process is achieved.

System for converting thermal into mechanical energy comprising a boiler (5, 6); a pressurized working circuit (10, 10a), through which a working stream circulates; an expansion device (2) in which the working stream expands, first heater (3), a pressurized auxiliary circuit (10b), configured for directing an auxiliary stream from an outlet of the boiler (5, 6) to a vortex tube which comprises main inlet (I), an accessory inlet (IV), a hot output (III) connected to an auxiliary hot circuit (32, 33, 33a) and a cold output (II) connected to an auxiliary cold circuit 30, 31).