48results about "Superheating control" patented technology

This invention belongs to the field of heat exchange technology, specifically relating to a steam comprehensive utilization all-contact desuperheater, including a desuperheater body, a water inlet pipe, a drain port, desuperheater inlet and outlet, and a desuperheating atomization unit. The desuperheater body contains a buffer impeller, a baffle plate, and a protective chamber. The desuperheating atomization unit includes a mounting frame, a recessed splash guard, a perforated plate, and a reaction ring. After being buffered by the buffer impeller, the superheated steam directly contacts the uniform water film on the surface of the reaction ring along the opening direction of the protective chamber for heat exchange, resulting in complete vaporization of the desuperheating water. The steam is discharged after water droplets are separated by the baffle plate, and the condensate is collected and discharged from the desuperheater outlet for subsequent treatment. This invention improves heat exchange efficiency through uniform water flow distribution, and the modular design of the desuperheating atomization unit facilitates maintenance.

The application discloses a full-hydrophobic baffle temperature-regulating subcritical low-calorific-value coal gas-fired boiler, the lower part of the water-cooled wall is a low-calorific-value coal gas combustion zone, the upper part is a variable cross-section heating surface arrangement zone, low-temperature superheaters and low-temperature reheaters are arranged in the front and rear flues of the wall respectively, and flue gas baffles are arranged at the outlets of the two to regulate the temperature. The lower part of the wall is sequentially connected with a high-temperature economizer, a denitration device and a low-temperature economizer for hierarchical arrangement. The heating surfaces such as the low-temperature superheater and the screen-type superheater are horizontally arranged. The application utilizes the baffle temperature regulation to improve the heat transfer efficiency and fuel utilization rate; the hierarchical economizers guarantee the full-load denitration of the boiler and meet the requirement of the flue gas temperature; and the horizontally arranged heating surfaces realize full hydrophobicity, effectively preventing the accumulation of oxide scales.

This utility model discloses a brewery heating system with molten salt energy storage, including a water source heat pump module. The water source heat pump module comprises a first working fluid-water heat exchanger, an expander, a second working fluid-water heat exchanger, a compressor, a water storage tank, a second water pump, and a third water pump. The water source heat pump module is used to convert the low-quality heat from waste hot water generated in the brewery's process into high-quality heat. This utility model addresses the current situation of energy waste and steam demand in breweries by utilizing a water source heat pump module, a molten salt energy storage module, and a steam generation module. It can be designed to take advantage of the availability of off-peak electricity and renewable energy sources, and is equipped with a molten salt electric heater to fully utilize off-peak electricity or renewable energy, reducing steam costs in the industrial park. The heat pump system can recover heat from the waste hot water, improving energy efficiency.

The present invention provides a steam flow control device, a power plant, a steam flow control method, and a steam flow control program that enable load reduction while maintaining dry operation. [Solution] The steam flow control device 50 is a steam flow control device 50 for a power plant that includes a bypass line for bypassing steam passing through the heat recovery section of a boiler and a bypass valve for adjusting the steam flow rate, and comprises an acquisition unit 51 for acquiring the required power generation amount of the power plant, a calculation unit 52 for calculating the corresponding steam flow rate and bypass valve opening degree, which is the opening degree of the bypass valve, based on the acquired required power generation amount, and an adjustment unit 53 for adjusting the opening degree of the bypass valve so that it corresponds to the calculated steam flow rate.

The invention relates to a process for obtaining a hydrogen stream (1) in a plant (2), wherein a carbon-containing energy carrier stream (3) and an oxygen stream (4) are fed from an oxygen recovery arrangement (5) of the plant (2) to an ATR reactor arrangement (6) of the plant (2) for obtaining a synthesis gas stream (7) comprising hydrogen and carbon oxides, wherein the ATR reactor arrangement (6) affords the synthesis gas stream (7) from the energy carrier stream (3) by autothermal reforming with the oxygen stream (4), so that a catalytic partial oxidation in particular provides the heat required for the endothermic reforming reactions, wherein the synthesis gas stream (7) is fed at least partly to a separating device (8) of the plant (2) for separating the synthesis gas stream (7) into the hydrogen stream (1) including hydrogen and a purge stream (9) including carbon oxides, wherein the plant (2) has a steam heater (13), which steam heater (13) has at least one superheating stage (14a, b) for obtaining a respective superheated output steam stream (15a, b) from a respective input steam stream (16a, b), which input steam stream (16a, b) is conducted through the steam heater (13) until the superheated output steam stream (15a, b) is obtained, and wherein the plant (2) includes a turbine arrangement (12) for generating electrical power, which turbine arrangement (12) is driven by at least one superheated output steam stream (15a, b), characterized in that the at least one superheating stage (14a, b) has at least two heating sections (17) in each case, which heating sections (17) are guided through an inner region (18) of the steam heater (13), in which inner region (18) the heating sections (17) are heated by a burner (19) of the steam heater (13), in that the at least one superheating stage (14a, b) has a quench section (20) which is arranged between the at least two heating sections (17) in terms of process technology, in which quench section (20) steam obtained in

A superheated steam generator in which the amount of generated steam is controlled by the amount of electric power includes: a steam generation unit that generates steam from water by inductively heating a first conductor pipe having a spiral shape; a superheated steam generation unit that generates superheated steam by inductively heating a second conductor pipe having a spiral shape; a control unit that controls an amount of steam to be generated by the steam generation unit based on an amount of electric power to be supplied to the steam generation unit; and a safety device that prevents damage to the steam generation unit or the superheated steam generation unit based on a water pressure in the steam generation unit, a pressure or a temperature of the steam in the steam generation unit, or a pressure or a temperature of the superheated steam in the superheated steam generation unit.

This application discloses a bypass steam supply system control method and steam supply system, including: when the main steam supply system of a cogeneration unit is in an abnormal state, entering a bypass steam supply state; opening the high-pressure bypass pressure regulating valve to control the reheat steam pressure; opening the high-pressure bypass water spray desuperheating regulating valve group to control the high-pressure bypass outlet steam temperature; reducing boiler power; closing all low-pressure steam supply valve groups; when the high-pressure steam supply pressure exceeds a preset abnormal high-pressure threshold, opening the low-pressure bypass pressure regulating valve group until the high-pressure steam supply pressure is lower than or equal to a preset normal high-pressure threshold; opening the high-pressure to low-pressure emergency connection steam supply regulating valve group to control the emergency low-pressure steam supply pressure and emergency low-pressure steam supply temperature. This application additionally adds a bypass steam supply PID automatic control loop for the bypass steam supply state, which can realize fully automatic control and continue to provide two-stage industrial steam supply under shutdown-but-uninterrupted boiler operation conditions, improving safety and stability.

This utility model relates to the field of steam system technology, and is a device for replacing deoxygenated water in a steam desuperheater with condensate. It includes: a high-pressure steam supply unit, a medium- and low-pressure steam supply unit, a desuperheater, and a condensate tank. The high-pressure steam supply unit takes high-pressure steam as input, and its output ends are connected to both the desuperheater and the condensate tank. The high-pressure condensate output from the high-pressure steam supply unit is input to either the desuperheater or the condensate tank. The medium- and low-pressure steam supply unit is connected to the desuperheater at one end and to the condensate tank at the other end. The medium- and low-pressure steam supply unit takes medium- and low-pressure steam that has passed through the desuperheater as input and inputs the output low-pressure condensate to the condensate tank. This utility model designs and installs a condensate delivery pipeline to directly introduce high-pressure steam condensate into the medium / low-pressure steam desuperheater, and modifies the control system of the steam desuperheater to adapt to the physical characteristics of the condensate.

The utility model relates to the technical field of power plant steam supply equipment discloses a kind of cogeneration unit multimode steam supply systems, including the superheater of output main steam, the superheater is connected with third regulating path, the superheater is connected with high-pressure cylinder, the high-pressure cylinder is connected with the reheater of output hot section steam, the reheater is connected with first regulating path, second regulating path and third regulating path respectively, the reheater is connected with middle regulating door, the middle regulating door is connected with middle-pressure cylinder, first regulating path, second regulating path and third regulating path connection are all connected with steam header, the steam header is exported to hot user;The utility model improves the depth peak shaving capability of unit, guarantees the steam parameter demand of hot user, realizes environmental protection energy saving, improves the applicability and reliability of steam supply system.

The application discloses a high-temperature heat pump steam generation system, which comprises a first tank body, a second tank body, a first coil pipe, a second coil pipe, a third coil pipe and a connecting pipeline. The first coil pipe utilizes waste heat of lubricating oil of an air compressor to heat water in the first tank body to generate steam, which is sent into a lower cavity spherical tank of the second tank body through the connecting pipeline; the second coil pipe further heats the steam; a large-arc-shaped cover at the top of the lower cavity spherical tank realizes gas-liquid separation; after the separation, the steam enters an upper cavity spherical tank and is heated into superheated steam through the third coil pipe and then is sent out. The device fully recovers waste heat of the air compressor, is energy-saving and efficient through the double-tank-body and multi-coil-pipe design and the gas-liquid separation structure, can meet the requirements of multiple scenes and has a good application prospect.

This invention discloses a steam superheater, relating to the field of chemical waste heat recovery technology. It is used to reduce the temperature of the process gas at the inlet of the steam superheater and ensure the stability of the process gas temperature used for steam superheating, preventing the performance of the heat exchange tube material from deteriorating due to excessively high process gas temperatures, and simultaneously preventing fluctuations in the superheated steam temperature caused by fluctuations in process gas temperature. The steam superheater includes a waste heat boiler, a gas path regulating device, and a steam superheater body. The waste heat boiler is located at the inlet end of the steam superheater body along the flow direction of the process gas and includes a furnace drum, a central exhaust pipe, and a first heat exchange tube group. The central exhaust pipe and the first heat exchange tube group are located inside the furnace drum, with the first heat exchange tube group surrounding the central exhaust pipe. The gas path regulating device is located inside the furnace drum and includes a first valve, a second valve, and coaxially sleeved inner and outer cylinders. The inner cylinder is connected to the central exhaust pipe and is connected to the steam superheater body through the second valve.

The present application relates to the technical field of temperature control, and an embodiment thereof provides a method, device and equipment for reducing the number of general overtemperature times of the wall temperature of an intermediate superheater. The method for reducing the number of general overtemperature times of the wall temperature of the intermediate superheater comprises the following steps: determining factors affecting the wall temperature of the intermediate superheater, wherein the factors include the unit load change rate, fuel quality, boiler pressure, feed water flow and ash deposition condition; establishing a mapping relationship between each factor and the wall temperature of the intermediate superheater according to historical sample data, to obtain a plurality of mapping relationships; determining the factor having the greatest impact on the wall temperature of the intermediate superheater from the factors according to the plurality of mapping relationships; and determining the value of the factor having the greatest impact, to reduce the number of general overtemperature times of the wall temperature of the intermediate superheater. The embodiment provided by the present application can quickly determine the factors affecting the temperature of the intermediate superheater.

This invention provides a steam-stage drying and heat exchange device, belonging to the field of chemical equipment technology. It includes a primary steam utilization unit, a primary gas-liquid separator, a secondary steam utilization unit, a steam-hot water utilization unit, a secondary gas-liquid separator, and a steam condensate tank. The primary gas-liquid separator is connected to the exhaust port of the primary steam utilization unit via a pipeline. The secondary steam utilization unit is connected to the exhaust port of the primary gas-liquid separator via a pipeline. The steam-hot water utilization unit is connected to the drain port of the primary gas-liquid separator via a pipeline. The secondary gas-liquid separator is connected to the exhaust port of the secondary steam utilization unit via a pipeline. The steam condensate tank is connected to the steam-hot water utilization unit and the secondary gas-liquid separator via a pipeline, recovering primary and secondary hot water. The waste heat from the steam separated by the secondary gas-liquid separator is mixed with fresh steam to form a primary steam cycle. This device enables multiple uses of steam, improving steam utilization efficiency and reducing energy consumption.

The utility model discloses a kind of special electric heating boiler systems of oilfield steam injection, several layers of electric heater, evaporation section tube bundle and the superheating section tube bundle located above evaporation section tube bundle are installed in the sealed space surrounded by thermal insulation wall body.Evaporation section tube bundle's water inlet end is connected with the drainage end of high-pressure pump;Evaporation section tube bundle's saturated steam discharge end is connected with the water vapor inlet end of steam-water separator, the steam outlet end of steam-water separator is connected with the steam inlet end of superheating section tube bundle, and the steam outlet end of superheating section tube bundle is connected with the steam inlet end of mixing device.The water outlet end of steam-water separator is connected with the water inlet end of mixing device, and the steam outlet end of mixing device is used to connect oilfield steam injection pipeline.The utility model uses electric energy to replace fossil fuel combustion to solve carbon emission problem, and fully utilizes saturated water and its heat energy separated by steam-water separator.The separated saturated water carries part of inorganic salt and is taken out of boiler system, reducing the accumulation and deposition of inorganic salt in boiler.

This invention provides an optimized control method and system for the main reheat steam temperature of a thermal power unit, relating to the field of thermal power generation technology. The method includes the following steps: Step S1, real-time acquisition and preprocessing of operating parameters; Step S2, determination of the unit's current operating condition based on the preprocessed operating parameters, and matching the corresponding predictive control model; Step S3, inputting the preprocessed operating parameters into the predictive control model and outputting the predicted steam temperature value; Step S4, generating control commands based on the predicted steam temperature value, the current steam temperature setpoint, and the optimization objective function; Step S5, superimposing the control commands with PID feedback control quantities to generate the final execution command and sending it to the DCS system for execution; Step S6, monitoring the actual steam temperature, processing prediction errors, and updating the predictive control model. This invention, employing the above-mentioned optimized control method and system for the main reheat steam temperature of a thermal power unit, improves steam temperature control accuracy and enhances the system's response speed and robustness.

This disclosure relates to the field of thermal power generation technology, and discloses an adaptive adjustment mode for a single-boiler, two-unit thermal power system and an adaptive multi-mode control method. The system comprises a coal-fired boiler whose superheater module outlet is connected to a first high-pressure steam inlet and a second high-pressure steam inlet via a main steam diversion valve; the first and second high-pressure steam outlets are connected to the inlet of the reheat module in the coal-fired boiler via a cold reheat steam merging valve; the reheat module outlet is connected to a first medium-pressure steam inlet and a second medium-pressure steam inlet via a hot reheat steam diversion valve; and a control module is connected to the main steam diversion valve, the cold reheat steam merging valve, and the hot reheat steam diversion valve, respectively. The control module is used to automatically control the valve openings of the main steam diversion valve, the cold reheat steam merging valve, and the hot reheat steam diversion valve to automatically adjust the operating mode of the single-boiler, two-unit thermal power system, thereby enhancing the scheduling flexibility of the entire thermal power system.

The present application relates to the technical field of industrial thermal energy equipment, and discloses an enthalpy-increasing gas steam generator, which comprises a steam generator body and a water supply device, the outer wall of the steam generator body is sequentially connected with a superheater, an economizer and a condenser through an exhaust pipe, the water supply pipe of the water supply device is sequentially connected with the condenser, the economizer and the steam generator body in series, the outer wall of the steam generator body is fixedly provided with an air outlet pipe, the outer wall of the air outlet pipe is sequentially provided with a solenoid valve one and a solenoid valve two along the air outlet direction, and one port of the solenoid valve one is connected with the air inlet of the superheater through a pipeline. The condenser and the economizer improve the heat recovery efficiency in flue gas, and the cooperation of the solenoid valve one and the solenoid valve two enables the saturated steam to be converted into superheated steam through the heating of the superheater, so that the output switching of the saturated steam and the superheated steam is realized while reducing the operation cost.

The present invention provides a superheated steam generation device for preventing damage to a steam generation unit in a device for controlling the amount of steam generated in accordance with the amount of power, the superheated steam generation device being provided with: a steam generation unit (2) for generating steam from water by inductively heating a spiral first conductor tube (21); a superheated steam generation unit (3) that inductively heats the spiral second conductor tube (31) and generates superheated steam from the steam; a control unit (61) that controls the amount of water vapor generated by the water vapor generation unit (2) on the basis of the amount of power supplied to the water vapor generation unit (2); and a safety device (12) that prevents damage to the water vapor generation unit (2) or the superheated water vapor generation unit (3) on the basis of the pressure of water in the water vapor generation unit (2), the pressure or temperature of water vapor in the water vapor generation unit (2), or the pressure or temperature of superheated water vapor in the superheated water vapor generation unit (3).

The present invention relates to the technical field of secondary reheat boilers, and provides a secondary reheat boiler, which at least includes: a boiler main body containing a front flue, a middle flue and a rear flue inside; a first regulating baffle arranged at the outlet of the front flue and adapted to regulate the flue gas volume of the front flue; a second regulating baffle arranged at the outlet of the middle flue and adapted to regulate the flue gas volume of the middle flue; a third regulating baffle arranged at the outlet of the rear flue and adapted to regulate the flue gas volume of the rear flue; a primary low-temperature reheater arranged in the front flue; a secondary low-temperature reheater arranged in the rear flue; and a primary superheater arranged in the middle flue. For this secondary reheat boiler, the regulation of steam temperature can be achieved without setting up a flue gas recirculation system, there is no additional plant power consumption caused by the operation of the recirculation fan, and there will be no wear of the recirculation fan either, so the reliability and economy are higher; during low-load operation, the combustion will not be affected by adopting flue gas recirculation, and the safety is higher.

The present invention provides a superheated steam generation device for preventing damage to a steam generation unit in a device for controlling the amount of steam generated in accordance with the amount of power, the superheated steam generation device being provided with: a steam generation unit (2) for generating steam from water by inductively heating a spiral first conductor tube (21); a superheated steam generation unit (3) that inductively heats the spiral second conductor tube (31) and generates superheated steam from the steam; a control unit (61) that controls the amount of water vapor generated by the water vapor generation unit in accordance with the amount of power supplied to the water vapor generation unit; and a safety device (12) that prevents damage to the water vapor generating unit or the superheated water vapor generating unit on the basis of the pressure or temperature of water vapor in the water vapor generating unit, the first conductor tube having a first wound tube portion (21a) wound in a spiral shape, and the second conductor tube having a second wound tube portion (31a) wound in a spiral shape. The safety device is provided to the first winding pipe section or to a communication pipe section that communicates the first winding pipe section and the second winding pipe section.

The present application belongs to the technical field of coal-fired unit energy saving, and particularly relates to an energy gradient utilization system and method applied to a condensing-extraction back heating unit. On the high-pressure bypass, the main steam is used to drive the steam circulating water pump to operate in the small back pressure turbine, so that the small capacity circulating water pump is used to meet the circulating water demand of the condenser in the standby state during the heating period, which is conducive to reducing the plant power rate during the heating period. On the low-pressure bypass, the reheated steam first enters the steam-water heat exchanger to heat the boiler feed water. The reheated steam after heat exchange enters the desuperheater to adjust the steam temperature to the required parameters of the heat user, and is then sent to the heat network. When the system is de-energized, the corresponding low-pressure heater is also de-energized. The pressure matching device is used to mix the high-discharge steam and the medium-discharge steam to improve the heating parameters, so that the heating regulation and the turbine load regulation are separated, which is conducive to the safe operation of the unit. The flexibility of the unit is further improved, and the operation condition of low-load heating and the requirement of deep peak shaving are more suitable.

The utility model discloses a kind of for the boiler auxiliary heating system of new energy power consumption, belong to electric heating equipment technical field, including coal-fired boiler system, the coal-fired boiler system includes economizer and steam drum communicated by feedwater pipe, economizer is equipped with parallel secondary water electric heating unit between steam drum, the secondary water electric heating unit includes heat conducting oil heat exchanger and heat conducting oil heater communicated by oil circuit, the heat conducting oil heater is used to heat and drive heat conducting oil and circulate flow between heat conducting oil heat exchanger and heat conducting oil heater, the water outlet of economizer is equipped with three-way switch valve, and the three-way switch valve is used to connect feedwater pipe or heat conducting oil heat exchanger. The utility model adds secondary water electric heating unit and secondary wind power heating unit in coal-fired boiler system, which helps to consume abandoned electricity and reduce coal combustion.

A steam supply system for a power generation system is disclosed. The steam supply system includes a heat recovery steam generator and a combustion reheater. The heat recovery steam generator includes a high-temperature section including a high-pressure superheater and a reheater arranged in series with respect to the exhaust gas flowing through the heat recovery steam generator, and an evaporator located downstream of the high-temperature section. The evaporator extracts heat from the exhaust gas leaving the high-temperature section. The combustion reheater contributes at least part of the energy required to raise the temperature of the low-temperature reheat steam to a target temperature.

The present application relates to a kind of high-gas group accident control method after unit fast stabilization, when the unit high-gas group is decoupled, the operation state of the unit is adjusted by quickly reducing the water intake of boiler and reducing the real-time target load of unit, so that the load and main steam parameter of unit quickly reach stable state after high-gas group decoupling.In the present application, according to the unit high-gas decoupling unit condition, the feedwater flow is quickly reduced, and the main steam temperature can be controlled well in closed-loop mode while ensuring the working environment of desuperheating water, and a new balance can be quickly established to stabilize the unit operation;It greatly reduces the monitoring and operation workload of operating personnel, reduces the work misoperation, and ensures the safety of unit and power grid.

This invention relates to the field of condensate recovery technology, and in particular to a condensate recovery and circulation device for a desuperheater and pressure reducer. The device includes a reaction vessel with a first, second, and third tube evenly spaced on its upper side. A drain pipe and a liquid drain pipe are fixedly installed through the side of the reaction vessel. The interior of the reaction vessel houses a drive assembly, a filter assembly, a heat exchange assembly, and auxiliary components. This invention utilizes the heat-conducting pipes, filter blocks, and rotating frame in the filter assembly to achieve the initial cutting and crushing of large particles and fine filtration of condensate upon entry into the equipment. Combined with the initial heat exchange through the heat-conducting pipes and blocks, it achieves synergistic treatment of impurity removal and temperature reduction. Further enhanced heat exchange is then performed on the condensate through the threaded heat exchange pipes in the heat exchange assembly, further reducing the water temperature. Finally, the auxiliary components add rust remover and flocculant to the reaction vessel, and with stirring, mixing, and settling, effectively remove iron and suspended solids from the water.

The utility model relates to a steam technical field, and disclose a kind of overheating equipment of adjustable steam temperature, including case, the left side of the case is connected with steam inlet pipe, the right side of the case is connected with steam outlet pipe, the upside of the case is provided with multiple dispersion devices, the dispersion device includes water inlet pipe, the right side of the water inlet pipe is connected with connector, the right side of the connector is connected with multiple groups of atomizing spray head, the outside of the connector is connected with first bevel gear, the case, steam inlet pipe, dispersion device can be mixed with steam in the case by external moisture in the present application, to reduce the heat of steam, and staff can adjust the temperature of steam heat according to the amount of moisture into the case, by setting multiple dispersion devices, cooling work can be quickly coordinated when steam is rapidly heated, and only one dispersion device is needed for ordinary cooling.

The application belongs to the technical field of desuperheating water control, and particularly discloses a control method and system for desuperheating water of a thermal power plant, wherein the method comprises the following steps: obtaining a set value and an actual value of steam temperature; when the difference between the set value and the actual value is less than a first threshold value or greater than a second threshold value, coarsely adjusting the opening value of a desuperheating water regulating valve so that the actual value of the steam temperature meets a preset condition; determining the maximum opening limit value and the minimum opening limit value of PID control according to the opening value of the desuperheating water regulating valve when the actual value of the steam temperature meets the preset condition; when the difference between the set value and the actual value is between the first threshold value and the second threshold value, finely adjusting the opening value of the desuperheating water regulating valve by PID control in combination with the maximum opening limit value and the minimum opening limit value. The opening of the desuperheating water regulating valve is controlled in a smaller interval first, and then finely adjusted by PID control, so that the steam temperature can be quickly stabilized and large fluctuation of the steam temperature can be avoided.