501 results about "Steam drum" patented technology

The invention discloses a double-medium thermochemical energy storage system and method. The double-medium thermochemical energy storage system comprises a first regulating valve, a gas storage tank, a thermochemical reactor, a fan, a steam pocket, a water feeding pump and a circulating water pump, the first regulating valve is communicated with an inlet of the gas storage tank through the fan and the electric heater, an outlet of the gas storage tank is communicated with an inlet of a heat exchange tube in the thermochemical reactor, an outlet of the heat exchange tube in the thermochemical reactor is divided into two paths, one path is communicated with an inlet of the fan, and the other path is communicated with a shell side inlet of the steam pocket; a bottom outlet on the shell side of the steam drum is communicated with an inlet of the circulating water pump after being combined with an outlet of the water feeding pump through a pipeline, an outlet of the circulating water pump is communicated with an inlet of a heat exchange pipe in the thermal chemical reactor, a shell side outlet of the thermal chemical reactor is communicated with the pipe side of the steam drum, and a pipe side inlet of the thermal chemical reactor is communicated with a drainage pipe. According to the system and the method, the heat exchange efficiency of the thermochemical reactor can be improved.

The invention relates to the technical field of power generation system transformation, in particular to an energy storage power generation system and method based on thermal power plant transformation. The Carnot battery unit comprises a liquid carbon dioxide storage tank, an electric heater, a compressor, a heat storage transducer heat flow channel and an expansion machine which are connected in sequence, and the liquid carbon dioxide storage tank adopts a boiler drum of a thermal power plant and stores liquid carbon dioxide liquefied by a water chilling unit of the thermal power plant; the heat storage circulating unit exchanges heat with a heat flow channel of the heat storage transducer to store heat; the steam power generation unit adopts a thermal power plant steam generator set and extracts heat stored by the heat storage circulation unit for steam power generation. The thermal power generating unit is transformed into the carbon dioxide Carnot battery energy storage system, the defect that a power grid is unstable in the process that a traditional thermal power plant is gradually converted into new energy is overcome, double stable output electric quantity is achieved, the system efficiency is improved, and meanwhile high economic benefits are achieved.

A steam single-screw compressor testing system is characterized in that the steam single-screw compressor testing system is composed of a steam pocket (5) and a liquid-gas separator (3), an electric heater (12) and an inverted-T-shaped steam distribution mixer (13) are installed in the steam pocket (5), and the steam pocket (5) is communicated with a steam single-screw compressor (1) through a steam return pipeline (6); the steam single-screw compressor (1) is communicated with a gas inlet of the liquid-gas separator (3) through a high-pressure steam outlet pipeline (2), high-pressure steam separated by the liquid-gas separator (3) is communicated with a gas inlet of the inverted-T-shaped steam distribution mixer (13) installed in the steam pocket through a low-pressure steam pipeline (4), and the bottom of the inverted-T-shaped steam distribution mixer (13) is located below the waterline of the steam pocket (5). And small holes are fully distributed, so that high-temperature steam and water in the steam pocket are uniformly mixed for heat transfer, and heat energy is recycled. The air conditioner is simple in structure, the compressor is started without electric heating, and energy and water resources are saved.

The invention discloses a fuzzy model predictive control method for a coal-fired boiler-steam turbine system, and mainly relates to the technical field of intelligent environmental protection. Comprising the following steps: S1, constructing a fuzzy prediction model by using Takagi-Sugeno fuzzy logic; s2, constructing a control efficiency evaluation index, and establishing a dual-channel event triggering mechanism; s3, constructing a model prediction controller, constructing an objective function based on the prediction model, and solving an optimal control signal at each sampling moment; s4, performing offline training on the fuzzy prediction model through actual data of the boiler-steam turbine system to obtain a prediction model for a control system; s5, on the basis of a dual-channel event triggering mechanism, updating the prediction model according to real-time data through an online updating strategy; according to the method, the steam drum pressure, the generated power and the steam drum water level can be efficiently and accurately controlled, the calculation overhead can be effectively reduced, and the real-time performance and the stability of a control system are improved.

The invention discloses a fan frequency control method and device, electronic equipment and a computer medium, and belongs to the technical field of automatic incineration. According to the specific scheme, the method comprises the steps of obtaining a parameter sequence value of a control parameter of the automatic combustion control system in a historical period, a current flow value of main steam flow, a flow set value of the main steam flow, a real-time value of steam pocket pressure, a hearth material layer pressure difference value and a control variable sequence value in the historical period; calculating a flow predicted value of the main steam flow; calculating flow deviation; calculating the frequency of an intermediate fan; the steam drum fan frequency is calculated; the flow fan frequency is obtained; calculating a primary frequency given value; and the primary frequency set value is dynamically corrected, and the target primary fan frequency of the primary fan is obtained and adopted to control the primary fan. The response speed of the automatic combustion control system can be effectively improved, so that the control of the frequency of the extension set can be closer to the actual production condition.

The invention discloses a fuming furnace waste heat boiler liquid level automatic control device, method and system and a medium, and the method comprises the steps that sensing data are obtained and preprocessed, and the sensing data at least comprise steam drum liquid level data, steam output flow data and boiler feed water flow data; performing three-impulse cascade PID control based on the sensing data to obtain a control instruction, wherein the control instruction comprises a theoretical water replenishing value, a valve opening instruction and a water pump frequency converter adjusting instruction; regulating valve control and constant pressure difference control are carried out based on the control instruction in combination with a preset interval; and performing synchronous control based on a preset safety interlocking protection mechanism, wherein the synchronous control comprises pump spare power automatic switching, regulating valve abnormity alarm, over-limit water level interlocking and man-machine interaction. Through innovative three-impulse cascade PI D, dynamic interval control and constant pressure difference optimization, the defects of a traditional method under the complex working condition of the fuming furnace are overcome, high-precision and high-stability liquid level control is achieved, and meanwhile equipment safety and economical efficiency are remarkably improved.

The invention discloses a fused salt steam generation system and a control method thereof. A high-temperature molten salt tank, a salt feeding pump, a molten salt channel of a second-stage superheater, a molten salt channel of a first-stage superheater, a molten salt channel of an evaporator, a molten salt channel of a preheater and a low-temperature molten salt tank of the system are communicated in sequence; the water supply end, the water supply pump, a steam-water channel of the preheater, the steam pocket, the pressure regulating valve, a steam-water channel of the first-stage superheater, the water spraying and temperature reducing device, a steam-water channel of the second-stage superheater and the steam removal end are sequentially communicated, and a descending pipe and an ascending pipe of the steam pocket are communicated with a steam-water channel of the evaporator. The control method aims at the system. The method has the advantages that the steam pocket pressure is actively adjusted during load rising, the liquid working medium is flashed, a load instruction can be quickly responded, steam is stably generated according to the instruction and merged into the steam turbine, and the stability and safety of the steam turbine are improved; the steam pocket of the evaporation system is used as steam storage equipment, so that an independent steam storage pocket is prevented from being arranged in the evaporation system, the cost is reduced, and the control logic is simplified.

Provided in the present invention are a drum boiler model parameter determination method and apparatus for primary frequency regulation of a thermal power unit. The method comprises: acquiring structural parameters and thermal parameters of a drum boiler in a current operating state; on the basis of a pre-constructed drum boiler model, obtaining a drum boiler steady-state model; and on the basis of the structural parameters, the thermal parameters and the drum boiler steady-state model, determining model parameters of the drum boiler model, wherein the model parameters comprise operating-state-independent parameters and operating-state-dependent parameters, and the operating-state-dependent parameters comprise a heat transfer rate from flue gas to an evaporation zone, a heat transfer rate from flue gas to a metal pipe wall in a superheat zone heat exchange unit, a pipe resistance coefficient of a superheat zone heat exchanger, parameters of the superheat zone heat exchange unit, and a valve flow coefficient. The present invention can realize online calculation of drum boiler model parameters in different operating states, and can reflect changes in the model parameters along with the operating states of the unit, thereby improving the accuracy of an online monitoring result of the primary frequency regulation capability of the thermal power unit.

The utility model provides a kind of high-temperature solid material waste heat boiler, including fender, first heat exchange pipe, second heat exchange pipe and steam drum;The fender is enclosed into the cylinder structure for high-temperature solid material from top to bottom to flow, first heat exchange pipe is located in the upper section of cylinder structure inside, second heat exchange pipe is located in the lower section of cylinder structure inside, first heat exchange pipe and second heat exchange pipe are all by spiral coil pipe structure from top to bottom, independently the flow cross section of high-temperature solid material is divided into several areas, the water inlet and water outlet of first heat exchange pipe are connected with the steam drum outside cylinder structure respectively, and the water outlet of second heat exchange pipe is connected with the steam drum.The utility model waste heat boiler uses the mode that heat exchange pipe and high-temperature solid physical direct contact, can effectively recover high-temperature sensible heat, produce steam.Heat exchange pipe spiral arrangement, multiple area segmentation material flow cross section, expansion free, both energy saving, and can extend equipment service life.

The invention relates to an intelligent combustion monitoring and rapid intervention control method and system for deep peak regulation of a coal-fired boiler. The method comprises the following steps: reconstructing a two-dimensional temperature field of a hearth through regularization optimization modeling by utilizing hearth infrared measuring point data; constructing a coal quality dynamic identification model to realize dynamic monitoring and trend prediction of coal quality fluctuation; a combustion state nonlinear probability fusion model is constructed, on the basis of a probability graph model, information such as flame detection signals, hearth negative pressure, flame images, oxygen amount, steam drum water level, coke falling and coal interruption is fused, joint probability distribution is constructed, time sequence incremental learning is conducted in combination with an XGBoost model, and dynamic recognition and early warning of the combustion state are achieved. Key parameters such as a flame image, temperature field distribution and negative pressure fluctuation are collected in real time by means of a hearth multi-dimensional combustion state recognition model, a decision module is triggered when a combustion state score reaches an early warning threshold value, a quick oil gun is triggered to be put into use, and early warning in advance is changed into quick intervention.

The utility model relates to a blow-off flash steam recovery system for a heat recovery coke oven waste heat boiler, which is characterized in that heat recovery boilers are provided with heat recovery boiler drums, the bottoms of the heat recovery boilers are provided with heat recovery boiler blow-off pipes, and sewage outlets of the heat recovery boiler drums are connected with sewage inlets II of corresponding blow-off flash tanks through pipelines II; a blow-off pipe of the heat recovery boiler is connected with a first sewage inlet of the corresponding blow-off flash tank through a first pipeline, the top end of each blow-off flash tank is connected with an inlet of the steam compressor unit through a third pipeline, and an outlet of the steam compressor unit is connected with the low-pressure steam pipe network through a fourth pipeline. The heat recovery system has the advantages that pollution discharge flash steam of all the heat recovery boilers is recovered through the header pipe, the number of devices is reduced, and investment optimization and operation maintenance of the devices are facilitated; the steam compressor unit sucks flash steam, the flash steam is compressed and boosted to low-pressure steam, the low-pressure steam is connected to a low-pressure steam pipe network through an outlet pipeline of the steam compressor, and white steam caused by blow-off steam diffusion is avoided.

The invention relates to the technical field of petrochemical cracking furnaces, in particular to a cracking method of an electrified cracking furnace and an electrified cracking device. The raw material flow is heated and then mixed with the diluted steam flow, the mixture is fed into a convection section of a cracking furnace to be overheated and then fed into a radiation section of the cracking furnace to be subjected to a cracking reaction to obtain cracked gas, the cracked gas is cooled by a quench cooler to obtain a product, and a rotating unit in the cracking method is driven by a motor; the steam pocket generates medium-pressure steam flow, and the medium-pressure steam flow is fed into the quench cooler to be subjected to heat exchange with cracking gas and then is fed into a medium-pressure steam pipe network. According to the technical scheme, a rotating unit of the cracking furnace is changed to be driven by the motor to rotate, so that the control is simpler. And the energy utilization efficiency is improved by changing the technological process and the connection mode of the cracking furnace.

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 present invention provides a molten salt steam generator and an extended molten salt steam generator that transfer heat through heat pipes. The molten salt steam generator has a simple and compact structure, with uniform internal molten salt flow rate and molten salt temperature distribution, high overall heat transfer efficiency, easy to process and manufacture, and the molten salt is not easily frozen and blocked. In particular, it can adapt to heat exchange between two media with a large temperature difference, namely high-temperature molten salt and normal-temperature water, greatly reducing the operation energy consumption of the system itself and improving the overall economy of the system. Further, a molten salt steam generator with a larger tonnage can be extended from multiple molten salt steam generator monomers, sharing a steam drum and enabling standardized production of each steam generator monomer. The steam tonnage can be easily expanded. During steam use, the steam output can be flexibly adjusted by adjusting the number of molten salt steam generator bodies participating in the work, achieving dynamic balance of the steam output.

The utility model discloses equipment for improving supercritical CO2 extraction efficiency of plant solid powder, which comprises a raw material screw conveyor, a vertical extraction kettle, an annular supercritical CO2 annular steam pocket and a raffinate screw conveyor, wherein the volume of the vertical extraction kettle can reach hundred cubic meters, and the withstanding pressure of the vertical extraction kettle is 20-45MPa. A material turning system capable of lifting materials upwards from the bottom is arranged in the extraction kettle, a supercritical CO2 annular steam pocket which is in a sleeved state relative to the extraction kettle is located on the lower side of the extraction kettle, and a plurality of supercritical CO2 steam inlet pipes which are communicated with the supercritical CO2 annular steam pocket and the extraction kettle extend into pipeline parts of an inner cavity of the extraction kettle to be opened downwards. The supercritical CO2 fluid entering the inner cavity of the extraction kettle downwards impacts the bottom of the inner cavity of the extraction kettle and then reversely flows upwards. The extraction kettle disclosed by the utility model is large in volume and can be elastically adjusted, the extraction efficiency is improved by 30%, the operation time is saved by about 1 / 4-1 / 3, and the production automation can be realized.

The invention discloses a thermal power plant boiler fly ash fluidized bed heat storage and release system and a heat storage and release method, and relates to the technical field of electric heat storage. The system comprises a heating fluidized bed, a fly ash heat storage tank and a fluidization heat release tank, the bottom and the top of the fly ash heat storage tank are connected with the bottoms and the tops of the heating fluidized bed and the fluidization heat release tank through hot air circulating pipes respectively, and circulating fans are arranged on the hot air circulating pipes; fluidized bed partition plates are arranged in the heating fluidized bed, the fly ash heat storage tank and the fluidization heat release tank; a water-cooled wall tube is arranged in the fluidization heat release tank, the lower end of the water-cooled wall tube is connected with a water supply and steam pocket downcomer, and the upper end of the water-cooled wall tube is connected with a steam pocket. The coal ash of the thermal power plant is directly used as a heat storage medium to construct a closed-loop heat storage and release process, the coal ash disposal problem is solved, the material cost of the system is reduced, meanwhile, the peak regulation requirement of the power grid is met, resource utilization of the coal ash of the thermal power plant is achieved, the material cost of the heat storage system is reduced, and an efficient heat storage solution is provided for peak regulation of the power grid.

A liquid blast furnace slag granulation and waste heat recovery system and method, which comprises a cyclone heat exchange device, a granulation device, a waste heat recovery device and a steam power generation device. Compressed air and water are mixed in the granulation device injector cavity to form a high-speed jet, which shears the molten blast furnace slag from the flow guide cover, and the molten slag is broken and solidified into solid particles; the granulated blast furnace slag enters the cyclone heat exchanger with high-temperature air and water vapor to achieve rapid separation, the deoxygenated water is transported into the spiral pipe bundle and exchanges heat with the high-temperature gas outside the pipe to obtain saturated or superheated steam, which is transported to the second heat exchanger of the waste heat recovery device; the high-temperature slag separated from the gas enters the first heat exchanger of the waste heat recovery device, and the cooling water flowing therein rapidly absorbs the heat of the high-temperature slag to change into water vapor; the saturated or superheated water vapor generated by the steam drum, the first and second heat exchangers of the cyclone heat exchange device enters the steam turbine to drive the power generation device, and finally the thermal energy is converted into electric energy which is supplied to users through the power transmission and distribution device.

The utility model belongs to the technical field of food processing, and particularly relates to a steam type roller chilli boiling machine which comprises a rack, a heating groove is formed in the rack, a heating pipe is arranged in the heating groove, a net-shaped roller is horizontally arranged above the heating groove, the bottom of the net-shaped roller is located in the heating groove, the two ends of the net-shaped roller are rotatably arranged on the rack, and spiral blades are fixedly arranged on the inner wall of the net-shaped roller. A feeding mechanism is arranged on one side of the rack, and a discharging conveying mechanism is arranged on the other side of the rack. A power mechanism is arranged on the rack; one end of the net-shaped roller is in power transmission connection with the power mechanism; a spraying pipe is arranged in the net-shaped roller, one end of the spraying pipe is connected with a water pump, and the water pump is communicated with the heating groove. The heating tank is filled with water, the hot peppers in the net-shaped roller are cooked after the water is heated through the heating pipe, the water in the water tank is pumped into the spraying pipe through the water pump, the spraying pipe sprays the hot peppers in the net-shaped roller, the heating uniformity of the hot peppers is improved, the spiral blades are fixed to the side face of the net-shaped roller, the roller rotates, and the hot peppers cannot be damaged. The product quality is ensured.

The invention provides a composite reagent adding control method and system based on boiler water treatment of a drum boiler and a medium. The method comprises the steps that boiler water parameter information is obtained, boiler water quality information is analyzed based on the boiler water parameter information, the boiler water quality information is analyzed based on a DCS distributed control system, and a reagent adding control strategy is output in real time. Controlling the operation parameters of the dosing pump and the flow of the composite agent based on the dosing control strategy; acquiring liquid level information of a dosing tank; generating composite medicament supplementing information based on the liquid level descending state information of the dosing tank, and supplementing the composite medicament in the dosing tank based on the composite medicament supplementing information; according to boiler water quality requirements, boiler water quality information is analyzed through a DCS (Distributed Control System), so that a dynamic dosing control strategy is generated, the dosing amount of a composite medicament is accurately controlled, the control precision is improved, and meanwhile, whether the composite medicament in a dosing tank meets requirements or not is analyzed in the dosing process, so that the composite medicament is quickly supplemented.

According to one aspect of the present application, an ultra-heavy steel plate for a steam drum having excellent surface quality and resistance to lamellar tearing and a method of manufacturing the same can be provided.

The embodiment of the present disclosure provides a molten salt-based gas-steam combined heat storage system and a capacity calculation method. The system comprises a gas turbine, a boiler, a gas heat exchanger, a steam heat exchanger, a high-temperature molten salt storage tank and a low-temperature molten salt storage tank. The outlet of the gas turbine is connected with the inlet of the flue of the boiler. The gas heat exchanger is connected with the flue between the gas turbine and the high-temperature reheater and the high-pressure superheater in the boiler. The steam heat exchanger is connected with the steam-water pipeline between the high-pressure superheater and the high-pressure drum and the low-pressure drum in the boiler. The low-temperature molten salt storage tank is connected with the high-temperature molten salt storage tank through a molten salt conveying pipeline. The molten salt conveying pipeline is sequentially connected with the steam heat exchanger and the gas heat exchanger. The low-temperature molten salt is heated to high-temperature molten salt when passing through the steam heat exchanger and the gas heat exchanger along the molten salt conveying pipeline. The system realizes reasonable distribution of steam flow and gas flow, significantly improves the heat exchange efficiency of the heat storage heat exchanger, improves the energy storage density per unit mass of the molten salt heat storage system, and reduces the cost.

The invention discloses a gas-steam combined cycle power generation system and method coupled with thermochemical energy storage. Comprising a Ca (OH) 2 / CaO system thermochemical energy storage system, a high-pressure natural gas conveying pipeline, a natural gas differential pressure power generation system, a gas turbine power generation system, a waste heat boiler, a frequency division fluid preheater, a steam turbine power generation system, a water supply preheater, a valve A, a valve B, a valve C, an air preheater and a valve D, the Ca (OH) 2 / CaO system thermochemical energy storage system comprises a reactor body and a steam pocket, the system and the method can deeply integrate thermochemical energy storage, solar full spectrum utilization and pressure energy recovery, and meanwhile, multi-energy coupling and dynamic peak regulation can be achieved.

The invention discloses a medium-high temperature energy storage system for multistage flexible peak regulation of a power plant, a secondary side outlet of a reheater is divided into two paths after passing through a reheating water storage tank and a pipe side of a CaCO3 / CaO system thermochemical energy storage system, one path is communicated with a secondary side inlet of the reheater, and the other path is communicated with a bottom inlet of a steam pocket; a top outlet of the steam pocket is divided into two paths after passing through the secondary side of the energy release heat exchanger, the cold water tank and the secondary side of the energy storage heat exchanger, one path is communicated with a bottom inlet of the steam pocket, the other path is communicated with a pipe side inlet of the CaCO3 / CaO system thermochemical energy storage system, and the system can cooperate with high-grade heat storage, multi-stage energy release and sensible heat recovery.

The invention provides a method, device and equipment for controlling the steam drum water level of a gas-steam combined cycle unit. The method comprises the steps that the opening degree of an inlet guide vane of a gas compressor, the turbine exhaust temperature, the feed water flow, the steam flow, a steam drum water level set value and the steam drum water level are obtained in real time; according to the opening degree of an inlet guide vane of a gas compressor and the exhaust temperature of a turbine, the gas turbine side feed-forward control quantity is determined; according to the steam drum water level set value and the steam drum water level, a first PID controller is adopted to determine an original feed water flow set value; according to the feed water flow, the steam flow, the original feed water flow set value and the gas turbine side feed-forward control quantity, a second PID controller is adopted to determine a first feed water adjusting valve opening instruction; and adjusting the opening degree of the feed water adjusting valve according to the first feed water adjusting valve opening degree instruction, and controlling the steam drum water level of the gas-steam combined cycle unit. According to the invention, reliable guarantee is provided for safe and efficient operation of the unit through a cooperative regulation mechanism of the gas turbine side feed-forward control quantity and three-impulse control.

The invention discloses a sliding pressure operation waste heat recovery system with a dynamic peak regulation integrated heat storage function. An inlet of a flue heat accumulator module group is connected with a flue gas outlet of a waste heat production device, an outlet of the flue heat accumulator module group is connected with a gas phase channel inlet of a heat exchanger module group, and a gas phase channel of the heat exchanger module group is connected with a tail gas treatment device; an outlet of the softened water tank is connected with a liquid phase channel inlet of the heat exchanger module group, a liquid phase channel outlet of the heat exchanger module group is connected with an inlet of the steam pocket module group, outlets of the steam pocket module group and the steam heat accumulator module group are connected with an inlet of the steam distribution cylinder module group, and the steam distribution cylinder module group provides steam for users. Or the steam is fed into the steam heat accumulator module group to be stored, and the electric heater module group is arranged in the steam heat accumulator module group. By fusing the heat storage function and optimizing the sliding pressure efficiency, the problems that traditional waste heat recovery is poor in flexibility, insufficient in peak regulation capacity and the like are solved.

The utility model provides an independent circulation pipeline evaporator which comprises an ascending pipe connected to a steam pocket; the first evaporation screen is communicated with the ascending pipe through a first ascending communicating pipe, the first evaporation screen comprises a plurality of first pipe pieces, and the first pipe pieces are arranged on two flues in parallel; each first duct piece is arranged in a bow shape in the vertical direction, so that the heating area of each first duct piece is increased, and meanwhile, a steam soot blower can penetrate through each first duct piece and carry out decoking and soot cleaning on each first duct piece; the first descending communicating pipe is connected between the first evaporation screen and a descending pipe, and the descending pipe is connected to the bottom of the steam pocket and used for conveying water in the steam pocket to the first descending communicating pipe and then conveying the water to the first evaporation screen. The problems of overtemperature and high-temperature corrosion of the superheater mentioned in the background technology are solved.

This invention provides a steel slag treatment system, including a hot slag annealing device and a roller crushing device. The hot slag annealing device is provided with a hot slag steam outlet. It also includes a steam drum device, which is provided with a steam inlet, a feedwater inlet, a steam outlet, and a water outlet. A hot slag steam channel is provided between the steam outlet and the feedwater inlet. A hot slag annealing water inlet is provided on the hot slag annealing device, and a return water channel is provided between the water outlet and the feedwater inlet. This steel slag treatment system can purify the steel slag steam generated in the hot slag annealing device to obtain clean steam for power generation.

The application discloses a water supply device and a mixed speed regulation control method and device thereof and a storage medium, wherein the water supply device comprises a boiler, a high-pressure heater and a first water supply device and at least one second water supply device connected in parallel, the first water supply device comprises a first water supply pump and a hydraulic coupler, the second water supply device comprises a second water supply pump and a variable frequency motor, the method comprises the following steps: adjusting the rotating speed of the first water supply pump by configuring the scoop pipe opening degree of the hydraulic coupler, and adjusting the rotating speed of the second water supply pump by configuring the operating frequency of the variable frequency motor; heating the pumped water through the high-pressure heater, and conducting convection on the hot water output by the high-pressure heater through the boiler to output superheated steam; acquiring the drum water level of the boiler; determining the target rotating speed according to the drum water level, and determining the scoop pipe opening degree instruction and the variable frequency instruction according to the target rotating speed to control the scoop pipe opening degree of the hydraulic coupler and the operating frequency of the variable frequency motor, so that the drum water level is in a preset water level interval.

The utility model discloses a drip-proof boiler continuous blowdown device, which relates to the technical field of boiler blowdown and comprises a boiler drum and a sealing component, a continuous blowdown regulating valve is arranged in front of the boiler drum, and the sealing component is arranged on the surface of the continuous blowdown regulating valve. The sealing assembly comprises connecting flanges, a rear connecting pipe, a front connecting pipe, mounting bolts, a first sealing ring, a second sealing ring, a rubber sealing ring and fixing bolts, and the connecting flanges are arranged on the surfaces of the two sides of the lower end of the continuous row adjusting valve. According to the drip-proof boiler continuous blowdown device, the sealing performance of the adjusting valve of the device is greatly improved through the sealing assembly, the drip phenomenon is prevented, the adjusting valve can be rapidly disassembled and assembled, the adjusting valve with inner leakage is convenient to replace, drip caused by aging of the adjusting valve is avoided, continuous blowdown of a boiler can be achieved through the device through the blowdown assembly, and the service life of the boiler is prolonged. The salt content and alkalinity in the pot water are reduced, and the steam quality is prevented from being influenced by over-high concentration of the pot water.

The present application relates to a method for reducing the start-up time of a water-cooled wall standby furnace, which uses equipment including a gasifier water-cooled wall, a steam drum and a water-cooled wall circulating water pump. The present application makes full use of the heat of the continuous blowdown of the operating series steam drum, and realizes the maintenance of the standby series water-cooled wall temperature, and the system is simple and the control is convenient; compared with the prior art, the present application can reduce the start-up time of the standby furnace, reduce the impact of the gasifier trip on the device operation load, and reduce the economic loss caused by shutdown. According to the water baking time of 8 hours, the present application can reduce the economic loss of 8 hours caused by unplanned shutdown, and according to the gasification scale of 100,000 standard cubic meters / hour of effective gas production, the economic loss can be reduced by nearly 500,000 yuan.