CN117722669A - Boiler steam generating system coupled with built-in electric heater - Google Patents
Boiler steam generating system coupled with built-in electric heater Download PDFInfo
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- CN117722669A CN117722669A CN202311458176.7A CN202311458176A CN117722669A CN 117722669 A CN117722669 A CN 117722669A CN 202311458176 A CN202311458176 A CN 202311458176A CN 117722669 A CN117722669 A CN 117722669A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 25
- 239000000446 fuel Substances 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims description 23
- 238000005485 electric heating Methods 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000779 smoke Substances 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 description 13
- 230000001276 controlling effect Effects 0.000 description 8
- 238000010248 power generation Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention provides a boiler steam generating system coupled with an internal electric heater, which comprises a boiler water supply control device, an economizer, a boiler barrel and a boiler water-cooled wall, wherein the internal electric heater device is arranged in the boiler barrel; the boiler water supply control device is used for controlling boiler water to be conveyed into the boiler barrel through the economizer; the built-in electric heater device is used for electrically heating the boiler water in the boiler barrel; boiler water in the boiler barrel returns to the boiler barrel through the boiler water cooling wall to form a first water circulation loop; the water cooling wall of the boiler absorbs heat and heats the water fed by the boiler; the drum is also used for separating saturated steam and outputting saturated steam. The combination of heating and steam production and fuel heating and steam production of the built-in electric heater device reduces fuel consumption and reduces smoke emission.
Description
Technical Field
The invention relates to the technical field of boilers, in particular to a boiler steam generating system with a coupled built-in electric heater.
Background
The boiler steam generating system is a device capable of heating boiler water to generate steam, and is one of heat energy devices commonly used in industrial production, building field and the like, in industrial production, the boiler steam generating system can be used for heating devices, power generation, paper making and the like, in the building field, steam generated by the boiler steam generating system is mainly used for heating, generated steam is conveyed to various heating devices such as radiators, radiators and the like through pipelines, heat energy is transferred to indoor air, and comfortable indoor temperature is provided.
The existing boiler steam production system generally utilizes fuel to heat boiler feed water, and the mode is stable in steam production, but large amount of fuel is combusted to produce large carbon emission, large smoke amount and difficult environmental protection. In addition, there are boilers which heat and produce steam entirely by electricity, but the running cost is too high.
Disclosure of Invention
The embodiment of the disclosure provides a boiler steam generating system coupled with a built-in electric heater, which can reduce the emission of fossil fuel and carbon to a certain extent and is beneficial to environmental protection.
According to an embodiment of the present disclosure, there is provided a boiler steam generating system coupled with an internal electric heater, including a boiler feedwater control device, an economizer, a boiler drum and a boiler water wall, wherein the boiler drum is internally provided with the internal electric heater device;
the boiler water supply control device is used for controlling boiler water to be conveyed into the boiler barrel through the economizer;
the built-in electric heater device is used for electrically heating the boiler feed water in the boiler barrel;
boiler feed water in the boiler barrel returns to the boiler barrel through the boiler water cooling wall to form a first water circulation loop;
the boiler water cooling wall absorbs heat and heats the boiler feed water;
the boiler barrel is also used for separating saturated steam and outputting the saturated steam and boiler water for pollution discharge.
In one embodiment, the built-in electric heater device is connected to a green electric motor unit.
In one embodiment, the drum is provided with a fixed structure by which the built-in electric heater device is mounted within the drum.
In one embodiment, the built-in electric heater device comprises one or more sets of electric heaters, the sets of electric heaters being connected in parallel with each other.
In one embodiment, the electric heater includes any one of a resistive electric heater, an electromagnetic electric heater, and an electrode electric heater.
In one embodiment, the system further comprises a superheating device comprising a low temperature superheater, a large screen superheater and a high temperature superheater, through which saturated steam output from the drum passes sequentially, generating superheated steam.
In one embodiment, the superheating device further comprises a header, and the superheated steam output from the high-temperature superheater is output outwards after passing through the header.
In one embodiment, the output end of the superheating device is further connected with a monitoring module, and the monitoring module is used for monitoring parameters of superheated steam output by the superheating device; the system also includes a controller for controlling the combustion state of the boiler based on the parameter of the superheated steam monitored by the monitoring module.
In one embodiment, the monitoring module comprises a steam pressure gauge and/or a steam temperature gauge and/or a steam flow gauge, the steam pressure gauge is used for monitoring the pressure of the superheated steam, the steam temperature gauge is used for monitoring the temperature of the superheated steam, the steam flow gauge is used for monitoring the flow of the superheated steam, and the controller controls the air supply quantity and the fuel quantity of the boiler according to the pressure of the superheated steam and/or the temperature and the flow of the superheated steam.
In one embodiment, the system further comprises a desuperheater or a turbine through which the saturated steam output from the drum is output.
In one embodiment, the system further comprises an external electric heater device, and boiler feed water in the boiler barrel is returned to the boiler barrel through the external electric heater device to form a second water circulation loop; the external electric heater device is used for heating the boiler feed water.
In one embodiment, the external electric heater device is connected to a green electric motor unit.
In one embodiment, the external electric heater device comprises one or more groups of electric heaters, and the electric heaters are connected in parallel.
In one embodiment, the system further comprises a pressure pump located on the second water circulation circuit for controlling the water circuit pressure of the second water circulation circuit.
In one embodiment, boiler feed water in the boiler barrel passes through a downcomer and the external electric heating device and returns to the boiler barrel to form the second water circulation loop; or boiler feed water in the boiler barrel returns to the boiler barrel through the downcomer, the lower header and the external electric heating device to form the second water circulation loop.
The above-described features may be combined in various suitable ways or replaced by equivalent features as long as the object of the present invention can be achieved.
According to the boiler steam generating system with the coupling of the built-in electric heater, the built-in electric heater device is arranged in the boiler barrel, and the built-in electric heater device can heat boiler water in the boiler barrel, so that the consumption of fuel in a part of boiler can be replaced, the fuel consumption is reduced, meanwhile, the emission of flue gas is reduced, the carbon emission is reduced, and the environment protection is facilitated.
Drawings
Further details, features and advantages of the present disclosure are disclosed in the following description of exemplary embodiments, with reference to the following drawings, wherein:
FIG. 1 illustrates a schematic structural diagram of a boiler steam generation system coupled with an electric heater built-in according to an exemplary embodiment of the present disclosure;
FIG. 2 illustrates a schematic structural view of an electric heater device built-in to a boiler steam generation system coupled with an electric heater according to an exemplary embodiment of the present disclosure;
FIG. 3 illustrates a schematic structural view of a flange plate for fixing an electric heater device built-in to a drum in a boiler steam generating system coupled with an electric heater according to an exemplary embodiment of the present disclosure;
FIG. 4 illustrates a schematic structural view of a boiler steam generation system coupled with an electric heater built-in according to still another exemplary embodiment of the present disclosure;
fig. 5 illustrates a schematic structural view of a boiler steam generation system coupled with an electric heater built-in according to still another exemplary embodiment of the present disclosure.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure have been shown in the accompanying drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.
It should be understood that the various steps recited in the method embodiments of the present disclosure may be performed in a different order and/or performed in parallel. Furthermore, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present disclosure is not limited in this respect.
The term "including" and variations thereof as used herein are intended to be open-ended, i.e., including, but not limited to. The term "based on" is based at least in part on. The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments. Related definitions of other terms will be given in the description below. It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.
It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.
The names of messages or information interacted between the various devices in the embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.
The development of non-fossil energy sources such as photovoltaic power generation, wind power generation and the like is rapid, the installed capacity is first in the world, and by the year of 2023 and 6 months, the installation of wind power and photovoltaic new energy sources in China breaks through 8 hundred million kilowatts, the development is continuously accelerated in the future, and a novel power system is finally formed in the whole country. However, the output of new energy sources such as wind, light and the like has the characteristics of regionality, intermittence, volatility, uncontrollability and the like, and challenges are brought to the large-scale absorption of the new energy sources and the safety and stability of the system.
The energy storage is generally higher as a novel power system, so that the overall cost is generally higher at present, the large-scale development of new energy faces the serious problems of the consumption and the guarantee, and multi-level, multi-link and multi-type energy technical support is needed.
Based on the above, the present disclosure integrates large-scale green electricity heat supply into a boiler steam generating system (such as a CFB boiler, a pulverized coal boiler or a fuel oil, gas boiler, etc.), so as to solve the problem of green electricity consumption.
Aspects of embodiments of the present disclosure are described below with reference to the accompanying drawings.
The embodiment of the disclosure provides a boiler steam generating system coupled with an internal electric heater, as shown in fig. 1, fig. 1 shows a schematic structural diagram of the boiler steam generating system coupled with the internal electric heater according to the exemplary embodiment of the disclosure, the system comprises a boiler water supply control device 8, an economizer 2, a boiler barrel 3 and a boiler water-cooled wall 4, and a built-in electric heater device 5 is arranged in the boiler barrel 3; the boiler feed water control device 8 is used for controlling the boiler feed water 1 to be conveyed into the boiler barrel 3 through the economizer 2; the built-in electric heater device 5 is used for electrically heating the boiler feed water in the boiler barrel 3; boiler feed water in the boiler drum 3 returns to the boiler drum 3 through the boiler water cooling wall 4 to form a first water circulation loop; the boiler water cooling wall 4 absorbs heat and heats boiler water supply; the drum 3 is also used for separating saturated steam and outputting saturated steam.
The boiler water supply 1 enters a boiler barrel 3 (also called a steam drum) through an economizer 2, the boiler water in the boiler barrel 3 can enter a boiler body, a boiler water cooling wall 4 is arranged in a boiler furnace of the boiler body, the boiler water cooling wall 4 is a plurality of pipes arranged in a combustion chamber of the boiler furnace, fuel in the boiler furnace combusts to generate heat, the boiler water cooling wall 4 absorbs the heat generated by the combustion chamber, and the boiler water in the pipes is heated to generate steam, so that the generated steam is saturated steam.
According to the boiler steam generating system with the coupling of the built-in electric heater, the built-in electric heater device 5 is arranged in the boiler barrel 3, and the built-in electric heater device 5 can heat boiler water in the boiler barrel 3, so that the consumption of fuel in a part of boiler can be replaced, the fuel consumption is reduced, and meanwhile, the emission of flue gas is reduced, so that the boiler steam generating system is beneficial to environmental protection.
In some embodiments of the present disclosure, the built-in electric heater device 5 is connected to a green motor group.
Considering that new energy sources such as wind and light in recent years have the characteristics of low carbon, no pollution, rich resources and the like due to the clean development of new energy sources in China, a power generation system mainly containing the new energy sources has various instability factors (mainly because of the intermittence and fluctuation of the new energy sources such as wind, electricity and the like), and the phenomena of wind abandoning and light abandoning are serious, the built-in electric heater device of the embodiment of the invention is connected with a green motor unit, combines a large-scale green electricity heat supply mode with a fuel heat supply mode, not only ensures the large-scale consumption of green electricity, ensures the efficient network access of the new energy sources and reduces the occurrence of the phenomena of wind abandoning and light abandoning, but also avoids the instability problem caused by completely using the green electricity heat supply. Moreover, the green electricity is used for supplying heat, so that partial fuel heat can be replaced, the consumption of fuel in the combustion chamber of the boiler hearth is reduced, and the cost is reduced while the emission of smoke is reduced. In some possible ways, the green generator set may be a wind generator set, a photovoltaic set, or the like. The embodiments of the present disclosure are not particularly limited.
In some embodiments of the present disclosure, the built-in electric heater device 5 comprises a set of electric heaters.
In some embodiments of the present disclosure, the built-in electric heater device 5 includes multiple sets of electric heaters that are connected in parallel with each other.
In some embodiments of the present disclosure, the drum 3 is provided with a fixed structure by which the built-in electric heater device 5 is mounted within the drum 3. In one possible way, the fixed structure may be a flange, as shown in fig. 3, in which the built-in electric heater device 5 is mounted in the drum through mounting holes 15 in the flange. The flange of fig. 3 is circular, but may be other shapes, and the embodiments of the present disclosure are not limited in detail. Other structures may be used for the securing structure.
In some embodiments of the present disclosure, the built-in electric heater device 5 includes multiple sets of electric heaters that are integrated in a clustered fashion. Referring to fig. 2, fig. 2 shows a schematic structural diagram of a built-in electric heater device, in which a plurality of groups of electric heaters 12 are integrated on a flange 13 through binding posts 14 in a clustered manner, and then are fixed in a drum through the flange 13. The multiple groups of electric heaters are arranged and integrated in a bundling mode, so that the space in the boiler barrel can be more reasonably utilized while the energy of green electricity heat supply is increased, and the need of adjusting the size of the boiler barrel and even the excessive adjustment of the size of the boiler barrel is avoided. It should be noted that the multiple sets of electric heaters may be integrated in other manners, such as horizontal.
In some embodiments of the present disclosure, the electric heater may be any one of a resistive electric heater, an electromagnetic electric heater, and an electrode electric heater.
In some embodiments of the present disclosure, the boiler feedwater control device 8 includes a flow pressure control assembly 81, a plurality of electrically operated valves 82, and a plurality of regulating valves 83, the flow pressure control assembly 81 controls the flow of boiler feedwater in the piping by controlling the regulating valves 83, the electrically operated valves 82, and the check valves 84 prevent backflow of boiler feedwater. With continued reference to FIG. 1, in some embodiments of the present disclosure, after the boiler feedwater 1 is introduced, it is fed into the economizer 2 via two-way piping.
The economizer 2 can utilize the flue gas waste heat that boiler furnace combustion chamber got rid of to heat boiler feedwater, and economizer 2 absorbs the waste heat of the flue gas of getting rid of, reduces exhaust gas temperature, improves the efficiency of the boiler steam production system of coupling built-in electric heater to practice thrift the fuel. The boiler water fed into the boiler drum 3 can reduce the thermal stress on the inner wall of the boiler drum 3 caused by the temperature difference due to the fact that the water temperature is increased through the economizer 2, improve the working condition of the boiler drum 3 and prolong the service life of the boiler drum 3.
In some embodiments of the present disclosure, as shown in fig. 4 and 5, fig. 4 and 5 respectively show schematic structural diagrams of a boiler steam generating system coupled with an internal electric heater according to another embodiment of the present disclosure, where the system includes an external electric heater device 11 in addition to the boiler water supply control device 8, the economizer 2, the boiler drum 3 with the internal electric heater device installed, and the boiler water wall 4 described in the above embodiments, and boiler water in the boiler drum 3 returns to the boiler drum 3 through the external electric heater device 11 to form a second water circulation loop; the external electric heater device 11 is used for heating boiler feed water.
The internal electric heating device 5 and the external electric heating device 11 are used for simultaneously supplying electric heat, so that the coal burning amount can be further reduced.
In some embodiments of the present disclosure, an external electric heater device may also be connected to the green motor unit. The external electric heater device combines large-scale green electricity heat supply and fuel heat supply modes through connecting the green motor group, so that the large-scale consumption of green electricity is guaranteed, the efficient network access of new energy is guaranteed, the phenomena of wind abandoning and light abandoning are reduced, and the problem of instability caused by completely using green electricity heat supply is avoided. Furthermore, the internal electric heater device and the external electric heater device supply heat through green electricity, so that more alternative fuels can supply heat, the fuel consumption is reduced, and the cost is further reduced.
In some possible ways, the green generator set may be a wind generator set, a photovoltaic set, or the like. The embodiments of the present disclosure are not particularly limited.
In some embodiments of the present disclosure, the external electric heater device 11 comprises a set of electric heaters.
In some embodiments of the present disclosure, the external electric heater device 11 includes multiple sets of electric heaters that are connected in parallel with each other.
In some embodiments of the present disclosure, the external electric heater device 11 includes multiple groups of electric heaters that are integrated in a clustered manner. The bundling manner may refer to the foregoing description related to the internal electric heater device 5, and is not repeated herein, but when the plurality of groups of electric heaters in the external heater device 11 are integrated in the bundling manner, the plurality of groups of electric heaters may be integrated into one container, and the container receives boiler feed water and outputs the boiler feed water to the boiler barrel 3 after being heated by the plurality of groups of electric heaters.
In some embodiments of the present disclosure, the electric heater of the external electric heater group may be any one of a resistive electric heater, an electromagnetic electric heater, and an electrode electric heater.
In some embodiments of the present disclosure, as shown in fig. 4, the second water circulation loop may be specifically: the boiler water in the boiler barrel passes through the downcomer and the external electric heating device 11 and returns to the boiler barrel 3 to form a second water circulation loop.
The boiler drum 3 is positioned at the top of the boiler, water is arranged at the lower part of the boiler drum 3, steam is arranged at the upper part of the boiler drum, the boiler drum 3 receives the boiler feed water of the economizer 2 and forms a first water circulation loop together with the downcomer, the header 9 and the boiler water-cooling wall 4, the boiler feed water absorbs heat in the boiler water-cooling wall 4 to generate saturated steam which is collected in the boiler drum 3, and the saturated steam is separated by a separator in the boiler drum 3 and then is produced through a steam outlet of the boiler drum 3. The boiler drum 3 can also form a second water circulation loop together with a down pipe and an external electric heating device 11, and boiler feed water in the boiler drum 3 is sent into the external electric heating device 11 through the down pipe for heating, and steam is generated and collected into the boiler drum 3.
In some embodiments of the present disclosure, as shown in fig. 5, the second water circulation loop may further be specifically: the boiler feed water in the boiler barrel 3 returns to the boiler barrel through the downcomer, the header 9 and the external electric heating device 11 to form a second water circulation loop.
In some embodiments of the present disclosure, the boiler steam generation system coupled with the built-in electric heater further includes a pressure pump 10 on the second water circulation loop for controlling the waterway pressure of the second water circulation loop. Further, the circulation amounts of the first water circulation loop and the second water circulation loop can be regulated by arranging a shunt valve on the downcomer or in front of the inlet of the pressure pump and by the pressure pump and the shunt valve. The specific installation positions of the pressure pump and the split valve are not limited as long as they are located on the second water circulation circuit.
In some embodiments of the present disclosure, the boiler steam generating system coupled with the built-in electric heater further includes a superheating device 6, and the superheating device 6 includes a low-temperature superheater, a large-screen superheater, and a high-temperature superheater (but is not limited thereto), and the saturated steam output from the drum 3 sequentially passes through the low-temperature superheater, the large-screen superheater, and the high-temperature superheater, generating superheated steam. With continued reference to fig. 1, the superheating device 6 is shown as a low temperature superheater, a large screen superheater and a high temperature superheater in that order from top to bottom. The superheater 6 is used for heating saturated steam into superheated steam with a certain temperature, high-temperature steam flows through the tube of the superheater 6, and the superheated steam produced from the superheater 6 is generally used for power generation of a steam turbine or heat supply of a user.
In some embodiments of the present disclosure, the superheating device 6 further includes a header 7, and superheated steam output from the high-temperature superheater is output to the outside through the header 7 for power generation by a turbine or for heat supply by a user. In general, when there are multiple paths of produced steam, a steam collecting box 7 is provided to collect the multiple paths of produced steam together and then supply the collected steam to the outside.
In some embodiments of the present disclosure, a monitoring module is further connected to the output end of the superheating device 6, where the monitoring module is used to monitor the parameter of the superheated steam output by the superheating device 6; the system also comprises a controller for controlling the combustion state of the boiler according to the parameter of the superheated steam monitored by the monitoring module. Specifically, the monitoring module comprises a steam pressure gauge and/or a steam temperature gauge and/or a steam flow gauge, the steam pressure gauge is used for monitoring the pressure of the superheated steam, the steam temperature gauge is used for monitoring the temperature of the superheated steam, the steam flow gauge is used for monitoring the flow of the superheated steam, and the controller is used for controlling the air supply quantity and the fuel quantity of the boiler according to the pressure of the superheated steam and/or the temperature and the flow of the superheated steam.
According to the embodiment of the disclosure, as the mode of generating steam by electric heating is adopted to replace a part of fuel heating to generate steam, the fuel consumption is reduced, compared with the mode of generating steam by adopting fuel heating entirely, the generated smoke quantity is reduced, the smoke temperature is reduced, and in order to ensure the heat taking effect of the superheating section, after the high-temperature superheater outputs superheated steam, the pressure and the temperature of the superheated steam are detected respectively by utilizing the steam pressure gauge and the steam temperature gauge to control the air supply quantity and the fuel quantity of the boiler. Generally, the superheated steam produced by a boiler steam production system coupled with an internal electric heater reaches the preset superheated steam parameter requirement through continuous control and adjustment, specifically, the pressure of the superheated steam meets 3.0 MPa-13.5 MPa, and the temperature meets 320-550 ℃. Similarly, another monitoring device can be connected to the output end of the saturated steam to ensure that the saturated steam meets the preset saturated steam pressure requirement and saturated steam temperature requirement, for example, the saturated steam pressure meets 4.0-15 MPa.
In some embodiments of the present disclosure, the boiler steam generating system coupled with the built-in electric heater further comprises a temperature and pressure reducer or a turbine, and the saturated steam output by the boiler drum is output outwards through the temperature and pressure reducer or the turbine. When the saturated steam is supplied outwards, the pressure of the generated saturated steam is reduced by combining the industrial parameter requirements of externally supplied equipment.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.
Claims (15)
1. The boiler steam generating system is characterized by comprising a boiler water supply control device, an economizer, a boiler barrel and a boiler water cooling wall, wherein the boiler barrel is internally provided with an internal electric heater device;
the boiler water supply control device is used for controlling boiler water to be conveyed into the boiler barrel through the economizer;
the built-in electric heater device is used for electrically heating the boiler feed water in the boiler barrel;
boiler feed water in the boiler barrel returns to the boiler barrel through the boiler water cooling wall to form a first water circulation loop;
the boiler water cooling wall absorbs heat and heats the boiler feed water;
the drum is also used for separating saturated steam and outputting the saturated steam.
2. A system as claimed in claim 1, wherein the built-in electric heater means is connected to a green motor unit.
3. The system of claim 1, wherein the drum is provided with a fixed structure by which the built-in electric heater device is mounted within the drum.
4. A system as claimed in claim 1, wherein said internal electric heater means comprises one or more sets of electric heaters, said sets of electric heaters being connected in parallel with each other.
5. The system of claim 4, wherein the electric heater comprises any one of a resistive electric heater, an electromagnetic electric heater, and an electrode electric heater.
6. The system of claim 1, further comprising a superheating device comprising a low temperature superheater, a large screen superheater, and a high temperature superheater, wherein saturated steam output from the drum passes through the low temperature superheater, the large screen superheater, and the high temperature superheater in sequence, producing superheated steam.
7. The system of claim 6, wherein the superheating apparatus further comprises a header through which superheated steam output from the high temperature superheater passes and is output.
8. The system of claim 6, wherein a monitoring module is further connected to the output end of the superheating device, and the monitoring module is used for monitoring parameters of superheated steam output by the superheating device;
the system also includes a controller for controlling the combustion state of the boiler based on the parameter of the superheated steam monitored by the monitoring module.
9. The system of claim 8, wherein the monitoring module comprises a steam pressure gauge for monitoring the pressure of the superheated steam and/or a steam temperature gauge for monitoring the temperature of the superheated steam and/or a steam flow gauge for monitoring the flow rate of the superheated steam, and the controller controls the air supply and fuel quantity of the boiler according to the pressure of the superheated steam and/or the temperature, flow rate of the superheated steam.
10. The system of claim 1, further comprising a desuperheater or a turbine through which saturated steam output from the drum is output.
11. The system of claim 1, further comprising an external electric heater device, wherein boiler feed water in the drum is returned to the drum through the external electric heater device to form a second water circulation loop; the external electric heater device is used for heating the boiler feed water.
12. The system of claim 11, wherein the external electric heater device is connected to a green electric motor unit.
13. The system of claim 11, wherein the external electric heater device comprises one or more groups of electric heaters, the groups of electric heaters being connected in parallel with each other.
14. The system of claim 11, further comprising a pressure pump on the second water circulation circuit for controlling the water circuit pressure of the second water circulation circuit.
15. The system of claim 11, wherein boiler feed water in said drum passes through a downcomer and said external electrical heating means and returns to said drum to form said second water circulation loop; or boiler feed water in the boiler barrel returns to the boiler barrel through the downcomer, the lower header and the external electric heating device to form the second water circulation loop.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101046296A (en) * | 2006-03-31 | 2007-10-03 | 吴仲贤 | Comprehensive energy-saving method for boiler or industrial furnace and kiln |
| CN104534433A (en) * | 2014-12-09 | 2015-04-22 | 上海探能实业有限公司 | Boiler for coal electric shaft power station |
| CN107289428A (en) * | 2017-07-11 | 2017-10-24 | 贺照刚 | For burning the device and method that sulphur UTILIZATION OF VESIDUAL HEAT IN and steam are produced in bromine water production |
| WO2019231325A1 (en) * | 2018-06-01 | 2019-12-05 | Stork Thermeq B.V. | Steam boiler assembly |
| JP2021177107A (en) * | 2020-05-08 | 2021-11-11 | 一般財団法人電力中央研究所 | Coal-fired power generation system |
| CN117722670A (en) * | 2023-11-02 | 2024-03-19 | 中石化宁波工程有限公司 | Boiler steam generating system coupled with external electric heater |
-
2023
- 2023-11-02 CN CN202311458176.7A patent/CN117722669A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101046296A (en) * | 2006-03-31 | 2007-10-03 | 吴仲贤 | Comprehensive energy-saving method for boiler or industrial furnace and kiln |
| CN104534433A (en) * | 2014-12-09 | 2015-04-22 | 上海探能实业有限公司 | Boiler for coal electric shaft power station |
| CN107289428A (en) * | 2017-07-11 | 2017-10-24 | 贺照刚 | For burning the device and method that sulphur UTILIZATION OF VESIDUAL HEAT IN and steam are produced in bromine water production |
| WO2019231325A1 (en) * | 2018-06-01 | 2019-12-05 | Stork Thermeq B.V. | Steam boiler assembly |
| JP2021177107A (en) * | 2020-05-08 | 2021-11-11 | 一般財団法人電力中央研究所 | Coal-fired power generation system |
| CN117722670A (en) * | 2023-11-02 | 2024-03-19 | 中石化宁波工程有限公司 | Boiler steam generating system coupled with external electric heater |
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