822 results about "Deaerator" patented technology

The invention discloses a dynamic monitoring-based deaerator water supply control method and system for a nuclear power plant, and relates to the field of deaerator water supply control, and the method comprises the steps: firstly, through a hybrid online identification algorithm, analyzing a historical valve position instruction and a water supply flow sequence in real time, and dynamically estimating the local gain and hysteresis width of a valve under the current working condition; then, the parameters identified in real time are utilized to carry out prospective compensation on the expected flow variation calculated by the main controller. In other words, the instruction amplitude is adjusted according to the estimated local gain, and it is ensured that consistent flow response can be obtained under different loads; meanwhile, when the instruction is reverse, the compensation amount is actively applied according to the estimated hysteresis width so as to eliminate the adjustment dead zone and oscillation caused by hysteresis. In this way, the nonlinear object of the valve is equivalent to a linear link with consistent response, and the stability and accuracy of the deaerator water level control system in the full working condition range are remarkably improved.

The invention relates to the technical field of thermal power generation, in particular to a coal-fired power plant based on fused salt heat storage, a power generation system and an operation method. The coal-fired power plant comprises a boiler, a steam turbine, a condenser, a deaerator, a first heating unit, a second heating unit and a generator. The coal-fired power plant is further provided with a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, one end of the first pipeline is connected to the pipeline between the boiler and the steam turbine, and the other end of the first pipeline is connected with an air inlet of the fused salt heating unit. One end of the second pipeline is connected with an air outlet of the fused salt heating unit, and the other end is connected with the condenser; one end of the third pipeline is connected with the deaerator, and the other end is connected with an air inlet of the steam generation unit; one end of the fourth pipeline is connected with an air outlet of the steam generation unit, and the other end is connected with the turbine and the first heating unit. And the peak regulation depth and the variable load rate of the coal-fired power plant are improved.

The invention relates to the technical field of thermal engineering, and discloses a horizontal split type rotating film deaerator which comprises a first-stage deoxidizing part and a second-stage deoxidizing part on one side of the first-stage deoxidizing part, an annular air inlet part is installed on the side, close to the second-stage deoxidizing part, of the first-stage deoxidizing part, and an annular water inlet part is arranged on the side, away from the second-stage deoxidizing part, of the annular air inlet part. A packing layer is installed on the side, close to the first-stage deoxidizing piece, of the second-stage deoxidizing piece, a gas conveying piece is arranged on the side, perpendicular to the second-stage deoxidizing piece, of the packing layer, a first butt joint piece is fixedly connected to the side, away from the first-stage deoxidizing piece, of the second-stage deoxidizing piece, and a deoxidizing water tank is fixedly connected to the side, away from the second-stage deoxidizing piece, of a first mounting piece. According to the device, conveying pipes in four directions are arranged on the annular water inlet piece and the annular air inlet piece correspondingly, the flow dividing assembly is placed outside the first-stage deoxidizing piece, and damage caused by long-time internal water supply flushing and heating is reduced.

The energy storage steam system comprises a main flue, a fused salt heat exchange module and a water heat exchange module are arranged in the main flue, the fused salt heat exchange module comprises a salt heat exchanger, the salt heat exchanger is arranged in the main flue, and the water heat exchange module is arranged in the main flue. The inlet end and the outlet section of the salt heat exchanger communicate with a cold salt tank and a hot salt tank through conveying pipelines correspondingly, the water heat exchange module comprises a water quality heat exchanger, the water quality heat exchanger is arranged in a main flue, and the inlet end and the outlet section of the water quality heat exchanger are arranged in a condensation water tank and a deaerator through conveying pipelines correspondingly; the output end of the deaerator communicates with the fused salt-steam generating device, and the cold salt tank and the hot salt tank communicate with the fused salt-steam generating device. Fused salt is used as a high-temperature heat transfer and storage medium, water is used as a heat transfer and storage medium of a low-temperature area, intermittent flue gas or process gas waste heat is recycled, then the recycled heat is used for generating high-parameter steam, and the requirements for external driving, heat supply, power generation or heat supply and the like are met.

The utility model discloses a device for secondary recycling of converter waste heat boiler steam, which comprises a filter tank, a filter plate is fixedly mounted in the filter tank, a fixed pipe is fixedly mounted at the top end of the filter tank, the upper end of the fixed pipe extends out of the filter tank and is fixedly provided with a discharge pipe, and the discharge pipe is fixedly connected with the filter tank. A rotating rod is rotationally connected into the fixed pipe through a bearing, the upper end of the rotating rod extends out of the fixed pipe and is fixedly provided with a driven gear, a filter plate filters condensate water and retains impurities on the filter plate, and a motor drives the rotating rod, a spiral lifting blade and a cleaning rod to rotate. The cleaning rod can scrape impurities on the filter plate and collect the impurities to the position below the fixing pipe, the spiral lifting blade can wind the impurities into the fixing pipe and convey the impurities upwards, then the impurities are discharged through the discharging pipe, and therefore the equipment continuously and efficiently filters condensate water, and the situation that water with smoke enters the deaerator to affect use of the deaerator is avoided.

The utility model discloses a deoxidizing device for recovering flue gas heat, and relates to the technical field of flue gas heat recovery. The device comprises a bottom plate, the bottom plate is provided with a stirring mechanism, the stirring mechanism comprises a deoxidizing tank fixedly connected to the top of the bottom plate, the top of the deoxidizing tank is rotatably connected with a rotating shaft, a threaded sleeve is in threaded connection with an internal threaded block, the outer side of the internal threaded block is fixedly connected with a rotating plate, and the rotating plate is fixedly connected with a rotating shaft. A plurality of stirring blades are fixedly connected to the outer wall of the rotating plate, a fixing plate is fixedly connected to the rotating shaft, two limiting rods are fixedly connected to the bottom of the fixing plate, and the two limiting rods are both in sliding connection with the rotating plate. Water is in a dynamic state, so that the contact opportunity of the water and steam or other deoxidizing media is increased, dissolved oxygen in the water is more easily diffused to the surface of the water and then is brought to the water surface along with water flow movement generated by stirring, escape of the oxygen from the water is accelerated, and the deoxidizing efficiency is improved.

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 invention discloses a source and storage integrated low-carbon power generation system and an operation method. The system comprises a coal-fired power generation subsystem, a decarburization subsystem and a pump heat energy storage subsystem. In order to improve the operation flexibility and the energy efficiency level of the system, the system is optimized as follows: (1) in a low ebb of electricity consumption, electric energy is output to drive a compressor to pressurize and heat steam extracted by an intermediate-pressure cylinder, then molten salt is heated, and then the steam enters a reboiler after acting through an expansion machine; and finally, redundant electric energy is converted into heat energy of the fused salt to be stored. And (2) in the peak period of power utilization, the feed water from the deaerator is heated by the high-temperature fused salt stored in the fused salt storage tank and then enters the expansion machine to do work, so that the output of the decarburization coal-fired power generation unit is improved. And the extracted steam of the intermediate-pressure cylinder acts through the expansion machine and then enters the reboiler. And (3) normal-temperature water serves as a heat absorption working medium, waste heat in the decarburization process is sequentially absorbed according to the heat grade, and part of medium-pressure cylinder extraction steam is replaced under the action of the ejector to provide heat for the reboiler. According to the system, the carbon capture energy efficiency punishment is effectively reduced, and the operation flexibility is improved.

The invention provides a steam turbine generator unit feed pump net positive suction head detection system and method, relates to the technical field of net positive suction detection, and solves the technical problem that net positive suction is difficult to recognize in advance in the prior art. The system specifically comprises a temperature acquisition module used for acquiring the temperature of the deaerator; the judgment and early warning module is used for receiving the flow change rate of the feed pump and triggering alarm when the flow change rate exceeds a flow threshold value; the effective net positive suction head calculation module is used for converting the inlet pressure of the water feeding pump into absolute pressure; temperature correction is conducted on the temperature of the deaerator to obtain the saturation temperature of an inlet of the water feeding pump, the saturation temperature is converted into saturated vapor pressure, and the effective net positive suction head is calculated based on the absolute pressure and the saturated vapor pressure; the necessary net positive suction head obtaining module is used for calling the necessary net positive suction head table and calculating and obtaining the necessary net positive suction head; and the net positive suction head calculation module is used for receiving the effective net positive suction head and the necessary net positive suction head and calculating the net positive suction head. The device is used for detecting the net positive suction head.

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.

An oil supply system, has: an oil tank; a closed-loop oil circuit including a component, a pump having a pump inlet and a pump outlet, and a de-aerator; a make-up flow conduit connecting the oil tank to the closed-loop oil circuit; a make-up pump connected to the closed-loop oil circuit; a recirculation conduit in parallel to the make-up pump and bypassing the make-up pump; a fixed orifice fluidly connected to the make-up flow conduit upstream of the closed-loop oil circuit and downstream of the recirculation conduit, the fixed orifice having an area selected to increase a pressure at an outlet of the make-up pump above a pressure at the de-aerator inlet; and a metering orifice connected on the recirculation conduit and having a flow circulating area selected to reduce a flow rate inputted into the closed-loop oil circuit below a flow rate generated by the make-up pump.

The invention discloses a starting and stopping method of a fused salt steam generator system and electronic equipment, and relates to the technical field of fused salt energy storage. The method comprises the following steps: opening a water feeding adjusting valve of the deaerator, opening an inlet valve of the electric pump, and opening a recirculating valve of the electric pump; closing an electric pump to a steam generation system water inlet valve, closing a steam generation system water feeding main valve, and closing a steam generation system water feeding regulating valve; an electric pump is started to a steam generation system water inlet valve, a steam generation system water feeding adjusting valve is opened, a steam generation system emptying valve is opened, and a steam generation system steam outlet valve is closed; the steam generation system is pre-warmed; the molten salt system is pre-warmed through the molten salt system electric heat tracing device; and the cold salt pump outlet valve and the hot salt pump outlet valve are controlled to be closed, the cold salt pump recirculation valve is controlled to be opened, the cold salt pump is started, the cold salt pump outlet valve is started again, and salt is injected into the fused salt pipeline. The problems of high-temperature corrosion, solidification and the like in the starting process of the molten salt steam generator system are solved.

The invention discloses a thermal deoxygenization device, a steam generator and a heat pump unit. The thermal deoxygenization device comprises an upper cover plate and a lower cover plate, the middle baffle is located below the upper cover plate, and the middle baffle and the upper cover plate are connected in a sealed mode to form a water storage chamber; the bottom plate is provided with dripping holes and located below the middle baffle, a deoxidizing chamber is arranged between the middle baffle and the bottom plate, one end of the deoxidizing chamber is opened to serve as a steam inlet, and the other end of the deoxidizing chamber is opened to serve as a steam outlet; the baffle assembly is located in the deoxidizing chamber, the baffle assembly comprises a plurality of deflection baffles which are sequentially arranged at intervals from the steam inlet to the steam outlet, and a deflection flow channel is formed between every two adjacent deflection baffles; wherein the middle baffle is provided with a plurality of spray heads for spraying water in the water storage chamber to the deoxidizing chamber, and the spray heads are arranged along the baffling flow channel. High-temperature steam is used for heating water to achieve the deoxygenization effect, the installation space is saved, system heat is efficiently utilized, the influence of the environment on the system is reduced, and the maintenance cost is greatly reduced.

The invention belongs to the technical field of waste heat recovery, and relates to a smelting flue gas waste heat power generation system based on modular heat storage and a control method thereof.The system comprises a smelting kiln and a flue gas system thereof, and the smelting kiln and the flue gas system comprise the smelting kiln, a cooling flue, a flue, a high-temperature dust remover, a high-temperature induced draft fan, a chimney, a quench cooler and a waste heat boiler; the modular heat storage system comprises modular heat storage units, and each modular heat storage unit comprises a first-stage modular heat storage unit group and a second-stage modular heat storage unit group which are connected in series; the steam power generation system comprises a steam-water pipeline, a steam pocket, a steam heat accumulator, a steam turbine, a condenser, a deaerator and a circulating pump. The modular heat storage unit is used for recycling and storing part of flue gas waste heat in a stepped mode, most of the remaining flue gas still enters a conventional waste heat boiler to release heat, smoothness of steam generation fluctuation of the steam heat accumulator and overheating of all saturated steam are achieved, and the technical bottleneck of stable overheating steam power generation of smelting flue gas waste heat is broken through.

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 discloses a novel heating control mode for a thermal deaerator of a converter flue gas waste heat boiler, which relates to the technical field of waste heat boiler equipment and comprises the following main steps of inspection before operation, water feeding operation, heating preparation, heating control, operation monitoring and heating ending and shutdown. Parameters such as water level, water replenishing quantity, a regulating valve, temperature detection and a flow meter are controlled through the deaerator, heat of circulating return water of a movable smoke hood, an oxygen lance opening and a discharging opening of the boiler and cooling water quantity during water replenishing of the deaerator are calculated, temperature rise of added soft water is calculated, and meanwhile, a PLC program is matched, so that the temperature of the boiler is increased. According to the method, the water supplementing amount during smelting and the steam heating amount of water supplementing in the non-smelting period are automatically controlled, a heating adjusting valve and a water supplementing adjusting valve of the deoxygenization water device are controlled, temperature control over the deoxygenization device is achieved, the deoxygenization device reaches the optimal deoxygenization temperature, and the problem that the optimal deoxygenization temperature cannot be guaranteed due to the discontinuity of converter steelmaking is solved.

The utility model belongs to the technical field of coking waste heat utilization, and particularly relates to an optimization system for recycling and reusing condensed water, which is characterized in that a steam inlet of a riser pump station deaerator is communicated with a steam port of a flash tank, a water inlet of the riser pump station deaerator is communicated with a medium outlet of a water-water heat exchanger, and a water outlet of the flash tank is communicated with a medium outlet of a water-water heat exchanger. A water outlet of the flash tank is communicated with an inner pipe inlet of the water-water heat exchanger, an inner pipe outlet of the water-water heat exchanger is communicated with a flue gas waste heat boiler demineralized water tank, and a medium inlet of the water-water heat exchanger is communicated with an ascending pipe pump station demineralized water tank through an ascending pipe pump station deoxygenated water pump; and a steam inlet of the flash tank is connected with a 0.6 MPa saturated high-temperature condensed water pipe. The device has the beneficial effects that the condensed water in a factory is directly recovered by utilizing the backpressure of the condensed water, the investment and the occupied area are saved, the heat of the high-temperature condensed water can be recovered, the consumption of circulating cooling water is saved, and the energy utilization rate of coking enterprises is improved.

According to the heat pump-deaerator integrated energy-saving system based on steam boiler flue gas waste heat recovery, high-temperature flue gas sent out from the boiler enters the energy saver to carry out heat exchange with water sent out from the deaerator, and low-temperature flue gas is subjected to heat exchange with water from the normal-temperature water tank; the flue gas enters an evaporator in the heat pump to exchange heat with a refrigerant working medium, so that the temperature of the flue gas is reduced; water in the normal-temperature water tank exchanges heat with low-temperature flue gas in the boiler condensing device, preheated water is formed after the temperature is increased to a first target temperature, the preheated water enters the heating water tank to be stored, the preheated water enters the condenser to exchange heat with a refrigerant working medium to increase the water temperature, and deoxygenization treatment is conducted after the temperature is increased to a second target temperature through heating. Conveying to a boiler for heating to generate steam; according to the scheme, the heat pump and the deaerator are innovatively coupled, the water inlet temperature of the deaerator is increased by recycling the waste heat of the flue gas and the deaerator, the steam energy consumption of the deaerator is reduced, the steam supply amount of the steam boiler is increased, and gradient utilization of the waste heat and synergistic interaction of the heat pump are achieved.

The utility model relates to the technical field of heat recovery, and discloses a dead steam recovery device which comprises a bottom plate, one side of the top end of the bottom plate is fixedly connected with a deaerator through a vertical plate, the other side of the top end of the bottom plate is provided with a collecting mechanism, the collecting mechanism is provided with a heat exchange mechanism, and the heat exchange mechanism is provided with a rotating mechanism. The heat exchange mechanism comprises a heat exchange box, a water inlet pipe and a water outlet pipe are symmetrically and fixedly connected to the outer wall of the heat exchange box, a heat exchange pipe is rotationally connected to the heat exchange box and is spirally arranged, and the two ends of the heat exchange pipe are fixedly connected with a first connecting box and a second connecting box respectively; through all structures in the heat exchange mechanism, the effects that steam is fully cooled and condensed into water, and the cooling efficiency is improved are achieved, and the problems that a cooling path in a traditional dead steam recovery device is short, so that the steam cannot be fully cooled, and the cooling efficiency is low are solved.

The invention discloses a system and a method for efficiently removing iron from make-up water of an offshore heavy oil thermal recovery boiler. The structure of the system is as follows: an electrochemical reactor, a compact cyclone air floater, a heat exchanger, an inorganic ultrafiltration membrane, a primary reverse osmosis membrane, an ion exchanger membrane and a thermal deaerator are connected in sequence; and the compact cyclone air floater is also connected with a bypass inlet for inputting seawater / geothermal water. The method comprises the following steps: seawater / geothermal water is introduced into an electrochemical reactor in the system and is treated by a compact cyclone air floater, a heat exchanger, an inorganic ultrafiltration membrane, a primary reverse osmosis membrane, an ion exchanger and a thermal deaerator in sequence, and produced water meets the water inlet requirement of an offshore thermal recovery boiler. The method comprises the following steps: oxidizing ferrous ions in water into iron ions through an electrochemical reactor, and then adjusting the pH value to convert the iron ions into ferric hydroxide; according to the present invention, the electrochemical oxidation is performed on the incoming water, the generated strong oxidizing free radicals can demulsify the dissolved oil in the water, and then the oil is removed in the cyclone air flotation so as to reduce the pollution of the oil to the rear end membrane;

The invention belongs to the technical field of thermal power generation, and particularly relates to a feed pump recirculation system for preventing cavitation of a minimum flow valve of a thermal power generating unit. The feed pump recirculation system comprises a condenser, a condensate pump, a low-pressure heat regenerator set, a deaerator, a feed pump and a high-pressure heat regenerator set which are sequentially connected, each stage of extraction steam of an external steam turbine is connected with steam inlets of the high-pressure heat regenerator set, the deaerator and the low-pressure heat regenerator set, and a condensate outlet of the high-pressure heat regenerator set is connected with a condensate inlet of the deaerator. A condensed water outlet of the low-pressure heat regenerator set is connected with a condensed water inlet of the condenser, the water feeding pump sequentially passes through the minimum flow valve, the heat exchanger and the first stop valve and is connected with the deaerator, and external cooling water enters the heat exchanger through the third stop valve for heat exchange and then is discharged. The return water temperature of the feed pump recirculation system is reduced through the heat exchanger, the saturated steam pressure corresponding to the return water is reduced, the cavitation risk of the minimum flow valve is reduced, and the service condition of the minimum flow valve can be obviously improved.

The utility model relates to a calcined coke waste heat utilization system, and belongs to the technical field of waste heat recovery. The device comprises a first-stage cooler, a second-stage cooler, a waste heat lifting device and a deaerator, and calcined coke is cooled and output sequentially through the first-stage cooler and the second-stage cooler; the first-stage cooling pipe is communicated with the heating medium pipe to form a circulating pipeline, and external softened water is communicated with a second deoxidizing inlet of the deaerator through a first refrigerant pipe; external softened water is connected with an inlet of the second-stage cooling pipe through a second refrigerant pipe, an outlet of the second-stage cooling pipe communicates with a first inlet of the deaerator, and an outlet of the deaerator conveys high-temperature water to the outside. The system is simple in structure, waste heat of calcined coke can be recycled more sufficiently, energy waste is avoided, steam can be heated by the recycled waste heat of the calcined coke, steam cost is reduced, energy is saved, the system is stable and reliable, calcined coke materials with the temperature below 100 DEG C can be output, and energy is saved. And the discharge temperature of the calcined coke is low, so that the requirement on the cooling temperature of the calcined coke material can be met.

The utility model relates to the technical field of deaerators, and discloses a deaerator for a boiler heat supply system, which comprises a deaerating assembly and a filtering assembly arranged on the deaerating assembly, the deaerating assembly comprises a deaerating tank, a bearing tank is arranged on the upper surface of the deaerating tank, the upper surface of the bearing tank is communicated with a water inlet pipe, the inner wall of the deaerating tank is fixedly connected with a water receiving plate, and the water receiving plate is fixedly connected with a water outlet pipe. A shower head is installed on the lower bottom face of the water receiving plate, one side of the deoxidizing tank is communicated with a steam main pipe, one end of the steam main pipe penetrates through the deoxidizing tank and extends into the deoxidizing tank, the other side of the deoxidizing tank is communicated with an exhaust pipe, the lower bottom face of the deoxidizing tank is communicated with a drainage pipe, the deoxidizing tank is fixedly connected with two sets of bases, and the two sets of bases are installed at the two ends of the deoxidizing tank. After circulating water enters the deoxygenization tank from the water inlet pipe, the area of the circulating water is increased through the shower head, and then the circulating water collides with the scattering plate and the exhaust column to be further scattered in the falling process, so that deoxygenization can be more thorough.

The application provides a coupling system and a control method for improving the variable load rate of a secondary reheat unit integrated with a medium-temperature energy storage, wherein the medium-temperature energy storage system is connected with the high-pressure cylinder outlet through a high-pressure cylinder outlet steam extraction valve during the energy storage process, is connected with the deaerator outlet through a pressure relief valve, is connected with the feed water pump outlet through a deaerator outlet regulating valve during the energy release process, and is connected with the boiler feed water inlet through a pipeline, so as to form a secondary reheat unit integrated with the medium-temperature energy storage; and a load splitting method is provided, which splits the whole unit load instruction into a medium-temperature energy storage system load instruction and a secondary reheat unit boiler coordination system load instruction, and the medium-temperature energy storage system load instruction is realized through high-pressure cylinder exhaust valve opening degree control and deaerator outlet regulating valve opening degree control in the load decreasing and increasing processes; through the coupling system and the load splitting method, the time-space transfer of the unit energy in the variable load process is realized, the variable load rate of the secondary reheat unit is improved, and the flexibility of the unit is enhanced.

The invention relates to a medium-temperature tail gas waste heat recovery system and process for a diesel generating set. The problems of tail gas expansion noise and tail gas thermal pollution are solved. The system comprises a diesel generating set (4), a high-temperature fan (5), a waste heat boiler (21), a deaerator (8), a middle water tank (12), a condensing steam turbine (15), a condenser (17) and a cooling tower (19), the diesel generating set (4) formed by connecting diesel generators (2) in parallel is communicated with the waste heat boiler (21), the waste heat boiler (21) is provided with a tail gas discharge port (6) and is communicated with the condensing steam turbine (15), and the condensing steam turbine (15) is provided with a tail gas discharge port (6). The condensing steam turbine (15) drives the generator (16) to do work and generate electricity, the condensing steam turbine (15) is communicated with the condenser (17), the condenser (17) is communicated with the cooling tower (19), circulating water (18) circulates between the condenser (17) and the cooling tower (19), the condenser (17) is simultaneously communicated with the middle water tank (12), the middle water tank (12) is further respectively communicated with the cooling tower (19) and the deaerator (8), and the deaerator (8) is communicated with the waste heat boiler (21). According to the invention, the construction cost is low while the reliability is realized.

The invention belongs to the field of energy conservation and consumption reduction of a gas boiler heat supply gas turbine power plant. The current gas-fired boiler adopts thermal deoxidization to control water supply and oxygen dissolution, water is supplied to a deaerator from an outlet of a secondary energy saver, the smoke exhaust temperature is about 60 DEG C, and waste heat is not fully utilized. Therefore, a novel pipeline system is constructed, a traditional heat exchange process is subverted, and exhaust smoke waste heat is utilized to the maximum extent through multiple heat exchange. The system comprises two sets of schemes adaptive to different operation states, and the schemes can be flexibly switched. When the gas-fired boiler runs, water supplied from an outlet of the secondary energy saver is led to the double-tube heat exchanger of the pressure regulating station, and returns to the primary energy saver after heat exchange to replace a water bath furnace to heat natural gas, so that the heating effect is guaranteed, gas is saved, and the water temperature of an inlet of the primary energy saver is reduced. When the gas turbine runs, one path of feed water is led to the double-tube heat exchanger from the low-pressure feed water secondary heater, and the feed water returns to the condenser after heat exchange, so that the gas consumption of the water bath furnace in low-temperature climate is saved, and more smoke exhaust waste heat is utilized in other climate. The two modes both can reduce the exhaust gas temperature, and are efficient in utilization, energy-saving, emission-reducing, green and environment-friendly.

The application discloses an absorbent tower external regeneration and oxygen removal method and system, and the method comprises the following steps: 1) the lean liquid from the bottom of the regeneration tower enters a negative pressure buffer tank, the top of the negative pressure buffer tank is connected with a steam compressor, the lean liquid extracted by the steam compressor enters a lean-liquid rich-liquid heat exchanger through a lean-liquid pump; 2) water vapor containing a small amount of CO2 enters the steam compressor, enters a regeneration oxygen remover after being adjusted by an adjusting valve I; 3) the rich liquid enters the top of the regeneration oxygen remover from top to bottom after being discharged from the lean-liquid rich-liquid heat exchanger, and steam enters the regeneration oxygen remover from bottom to top; 4) the rich liquid enters the regeneration tower from the top after being regenerated and stripped by heating; 5) the regeneration gas I after completing the heating regeneration and stripping of the rich liquid and the regeneration gas II discharged from the top of the regeneration tower enter a gas-liquid separator after passing through a gas cooler, the separated condensed water returns to the regeneration tower from the top, and the separated gas enters a membrane separation device after being compressed by a CO2 compressor. The method reduces the energy consumption of the system and realizes the cooperation of oxygen removal and energy saving.

The invention relates to the technical field of heat exchange, and provides a deoxidizing device applied to a condenser and a low-noise hybrid condenser. The deoxygenization device comprises an outer layer component, an inner layer component and an outer layer component, the inner-layer component is arranged in the outer-layer component, a steam main flow channel is formed between the inner-layer component and the outer-layer component, an oxygen removal liquid cavity is formed in the inner-layer component, the inner-layer component is provided with a steam flow dividing channel and an immersion flow channel, the steam flow dividing channel is communicated with the steam main flow channel and the oxygen removal liquid cavity, and the immersion flow channel is communicated with the oxygen removal liquid cavity. Liquid immersed in the flow channel is suitable for carrying out dividing wall type heat exchange with steam in the steam diversion channel, the superheat degree difference between the steam and the liquid in the deoxygenization liquid cavity is reduced, at least part of the steam completes gas-liquid phase change in the steam diversion channel, direct impact between the steam and the liquid in the deoxygenization liquid cavity is avoided, and the deoxygenization effect is improved. And a noise source of bubble collapse caused by rapid condensation when the steam is in direct contact with the liquid is reduced.

An air source heat pump and steam boiler combined heat supply system comprises a water treatment system, an air source heat pump, a deaerator, a steam boiler and an induced draft fan, the water treatment system used for desalting and softening water is connected with the water inlet end of the air source heat pump, and the water outlet end of the air source heat pump is connected with the water inlet end of the steam boiler through the deaerator. The air outlet end of the steam boiler is connected with the air inlet end of the air source heat pump. The heat supply system is simple in structure, convenient to operate, flexible and practical, the air source heat pump is embedded in an existing mature steam boiler heat supply system, the waste heat of the smoke at the tail of the steam boiler is further recycled, the overall heat efficiency of the heat supply system is improved, and the heat supply cost is reduced.

The utility model belongs to the technical field of dry quenching waste heat power generation, and particularly relates to a dry quenching waste heat power generation deoxygenization water supply system. Comprising EDI (electrodeionization) equipment, a steam extraction condensing steam turbine or a pure condensing steam turbine, a condenser, a condensate pump, a demineralized water tank of a dry quenching boiler water supply pump station, a deoxygenization water supply pump, a deoxygenization water supply regulating valve group, a three-way valve, a water-water heat exchanger, a water supply preheater and a thermal deaerator. The utility model has the beneficial effects that a desalting water tank and a secondary desalting water pump of a desalting water station are omitted; the fixed pressure difference of the regulating valve is used as main regulation, and the three-way valve is used as auxiliary regulation to ensure normal operation of sampling equipment; after deoxygenated water supply is heated by the water-water heat exchanger, one part of sewage is fed into the dry quenching body circulating water tank for normal production, and the other part of sewage is fed back to a sewage discharge well, so that the temperature of the sewage is reduced, heat and water resources are fully utilized, and meanwhile, the adverse effect of white smoke generated by sewage discharge on a drainage system and the environment is eliminated.