480results 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 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 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 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 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.

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 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).

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.

This waste gas treatment device is provided with: a superheated steam generating unit 1, 1'; and a thermal decomposition chamber 3 provided below the superheated steam generating unit 1, 1' to thermally decompose waste gas T using superheated steam Q from the superheated steam generating unit.

The present application relates to the technical field of noise reduction device, and particularly relates to a noise reduction structure and a waste heat boiler. The noise reduction structure is arranged on a superheater of the waste heat boiler, and comprises a noise reduction piece arranged on a finned tube of the superheater. The noise reduction piece is located at a leeward side of the finned tube and is arranged along the wind direction. The airflow itself has noise, and the airflow also generates a large noise when passing through the finned tube, so that the noise in the superheater is large. The noise reduction in the superheater can effectively reduce the overall noise of the waste heat boiler, so as to achieve the purpose of noise reduction of the waste heat boiler. Moreover, the noise reduction piece is arranged on the finned tube, compared with being arranged on the outside of the boiler body, the inside of the boiler body or the outside of the chimney, the installation and maintenance are more convenient, the material is saved, the cost is relatively low, and the overall performance of the waste heat boiler is not affected.

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 utility model belongs to a boiler main steam pipeline in the technical field of power generation systems. The main steam pipeline comprises a first pipeline assembly (1) and a second pipeline assembly (2), a first pipeline assembly flange (3) is arranged at one end of the first pipeline assembly (1), a second pipeline assembly flange (4) is arranged at one end of the second pipeline assembly (2), a communicating part is connected between the first pipeline assembly flange (3) and the second pipeline assembly flange (4), and the communicating part comprises a connecting straight pipe (5) and a connecting bent pipe (6). According to the main steam pipeline of the boiler, after a superheater of the boiler is replaced, purging can be conveniently carried out, relevant parts do not need to be disassembled, and operation convenience is improved.

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 application provides a high-temperature gas cooled reactor type supercritical ultra-supercritical boiler steam generator, which comprises a shell and a heat exchange device arranged in the shell, a maintenance space for people to enter is arranged between the shell and the heat exchange device, the shell is provided with a hot helium gas inlet and a cold helium gas outlet connected with a reactor, and the application further comprises a helium gas isolation valve for opening and closing the hot helium gas inlet and the cold helium gas outlet. In this way, since the helium gas isolation valve can close the hot helium gas inlet and the cold helium gas outlet, the helium gas passage with the reactor can be cut off in an accident, and the supply of high-temperature helium gas is stopped, so that the safety level of the steam generator is reduced, the steam generator is no longer limited by the nuclear power safety I level design and manufacturing specification, and the thermal power boiler design and manufacturing specification can be used. Moreover, the helium gas cannot be activated, the radiation dose inside the boiler steam generator is very low, and personnel can enter the maintenance space to check and maintain the boiler steam generator.

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.