CN218618244U - Device for preventing lime stone powder storehouse bottom hardens - Google Patents
Device for preventing lime stone powder storehouse bottom hardens Download PDFInfo
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- CN218618244U CN218618244U CN202221287989.5U CN202221287989U CN218618244U CN 218618244 U CN218618244 U CN 218618244U CN 202221287989 U CN202221287989 U CN 202221287989U CN 218618244 U CN218618244 U CN 218618244U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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Abstract
The application discloses prevent hardened and impervioussoil device in lime stone powder storehouse bottom for reduce the running cost of circulation fluidization boiler system. The device of this application includes: the device comprises a limestone powder bin, a second gasification branch pipeline, a gasification main pipeline, a gasification device, an air pipe, a Roots blower, an air branch pipeline, an air main pipeline and a first air electric heater; the bottom of the limestone powder bin is provided with the gasification device; the gasification device is communicated with the Roots blower through the second gasification branch pipeline, the gasification main pipeline, the air pipe, the air main pipeline and the air branch pipeline, the first air electric heater is arranged on the air branch pipeline, and the Roots blower and the first air electric heater are matched to provide heated air to the bottom of the limestone powder bin so as to fluidize limestone powder at the bottom of the limestone powder bin.
Description
Technical Field
The utility model relates to a circulating fluidized bed boiler field especially relates to a device that prevents lime stone powder storehouse bottom from hardening.
Background
Circulating fluidized bed boilers are the most industrialized clean coal combustion technology. The circulating fluidized bed boiler has the advantage of burning high-sulfur coal, and is conventionally provided with an in-boiler desulfurization system, and the desulfurizer adopts limestone powder with the particle size of 0.06-1.0 mm.
Limestone powder in a limestone powder bin configured in a circulating fluidized bed boiler has a particle size of 0.06-1.0 mm, is easy to damp and harden when being accumulated at the bottom of the limestone powder bin, and in order to ensure that the limestone powder in the limestone powder bin can be normally discharged, a certain number of gasification devices are generally arranged at the bottom of the limestone powder bin in the prior art, and the medium adopted by the gasification devices is hot air, so that the limestone powder is kept at a certain temperature and in a loose state, and the fluidity of materials is increased.
However, if the circulating fluidized bed boiler is provided with the roots blower conveying system, the whole circulating fluidized bed boiler system has two hot air generating devices, the roots blower provides conveying hot air for limestone powder, and the gasification blower communicated with the gasification device provides fluidizing hot air for a limestone bin, so that the operation cost of the whole circulating fluidized bed boiler system is increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the application provides a device for preventing the bottom of a limestone powder bin from hardening, which is used for reducing the running cost of a circulating fluidized bed boiler system.
The application provides a prevent hardened and impervioussoil device in lime stone powder storehouse bottom, include: the device comprises a limestone powder bin, a second gasification branch pipeline, a gasification main pipeline, a gasification device, an air pipe, a Roots blower, an air branch pipeline, an air main pipeline and a first air electric heater;
the bottom of the limestone powder bin is provided with the gasification device;
the gasification device is communicated with the Roots blower through the second gasification branch pipeline, the gasification main pipeline, the air pipe, the air main pipeline and the air branch pipeline, the first air electric heater is arranged on the air branch pipeline, and the Roots blower and the first air electric heater are matched to provide heated air to the bottom of the limestone powder bin so as to fluidize limestone powder at the bottom of the limestone powder bin.
Optionally, the apparatus further comprises: a first control valve;
the first control valve is arranged on the air pipe and used for opening the first control valve when the first air electric heater heats the air at the air outlet of the Roots blower to 120 ℃ so that the heated air enters the limestone powder bin through the air pipe, the gasification main pipeline and the second gasification branch pipeline.
Optionally, the first control valve is an electric butterfly valve.
Optionally, the apparatus further comprises: the system comprises a gasification fan, a first gasification branch pipeline and a second air electric heater;
the gasification device is communicated with the gasification fan through the second gasification branch pipeline, the gasification main pipeline and the first gasification branch pipeline, the second air electric heater is arranged on the first gasification branch pipeline, and the gasification fan and the second air electric heater are matched to provide fluidizing hot air for the bottom of the limestone powder bin when the Roots fan stops running, so as to fluidize limestone powder at the bottom of the limestone powder bin.
Optionally, the air delivery rate of the gasification fan is 4.45Nm 3 /min。
Optionally, a second control valve is disposed on the gasification main pipe 7.
Optionally, the first end of the air duct is communicated with the main gasification duct;
the second end of the air pipe is communicated with the air main pipeline;
the air main pipeline is communicated with the Roots blower through the air branch pipeline.
Optionally, the apparatus further comprises: the device comprises a feeding bin, a rotary feeder, a limestone powder conveying pipeline and a boiler hearth;
the bottom outlet of the limestone powder bin is communicated with the feeding bin;
the bottom outlet of the feeding bin is communicated with the rotary feeder;
the rotary feeder is communicated with the limestone powder conveying pipeline;
one end of the limestone powder conveying pipeline is communicated with the Roots blower through the main air pipeline and the branch air pipeline;
the other end of the limestone powder conveying pipeline is communicated with the boiler furnace.
Optionally, the air delivery rate of the roots blower is 58Nm 3 /min。
Optionally, the device further comprises a manual gate valve;
the manual gate valve is installed in the bottom in lime stone powder storehouse for when needs to the feed bin unloading, open manual gate valve.
According to the technical scheme, the method has the following advantages: the application provides a prevent hardened device in lime stone powder storehouse bottom, the device includes: the device comprises a limestone powder bin, a gasification fan, a second gasification branch pipeline, a gasification main pipeline, a gasification device, an air pipe, a Roots fan, air branch pipelines, an air main pipeline and a first air electric heater; the bottom of the limestone powder bin is provided with a gasification device; the gasification device is communicated with the Roots blower through a second gasification branch pipeline, a gasification main pipeline, an air pipe, an air main pipeline and an air branch pipeline, a first air electric heater is arranged on the air branch pipeline, and the Roots blower and the first air electric heater are matched to provide heated air for the bottom of the limestone powder bin and fluidize the bottom material of the limestone powder bin. Through this application scheme, when the roots's fan moves, the hot-blast and the fluidization of lime stone powder storehouse bottom of the transport that provide limestone powder by roots's fan and the cooperation of first air electric heater is hot-blast, has effectively practiced thrift the energy, has reduced whole circulating fluidized bed boiler system's running cost.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the device for preventing the bottom of the limestone powder bin from hardening according to the present application.
Detailed Description
The application provides a prevent hardened and impervioussoil device in lime stone powder storehouse bottom for reduce circulating fluidized bed boiler system's running cost.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit specific mounting orientations of the respective members or components.
Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as the case may be.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
In addition, the structures, the proportions, the sizes, and the like, which are illustrated in the accompanying drawings and described in the present application, are intended to be considered illustrative and not restrictive, and therefore, not limiting, since those skilled in the art will understand and read the present application, it is understood that any modifications of the structures, changes in the proportions, or adjustments in the sizes, which are not necessarily essential to the practice of the present application, are intended to be within the scope of the present disclosure without affecting the efficacy and attainment of the same.
Furthermore, the terms "first," "second," "third," and the like (if any) in this application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are capable of operation in other sequences than described or illustrated herein.
The technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Referring to fig. 1, the present application provides an apparatus for preventing bottom hardening of a limestone powder bin, which includes: the device comprises a limestone powder bin 1, a gasification fan 3, a second gasification branch pipeline 16, a gasification main pipeline 7, a gasification device 2, an air pipe 10, a Roots fan 4, an air branch pipeline 12, an air main pipeline 11 and a first air electric heater 5; the bottom of the limestone powder bin 1 is provided with a gasification device 2; the gasification device 2 is communicated with the Roots blower 4 through a second gasification branch pipeline 16, the gasification main pipeline 7, the air pipe 10, the air main pipeline 11 and the air branch pipeline 12, the first air electric heater 5 is arranged on the air branch pipeline 12, and the Roots blower 4 and the first air electric heater 5 are matched for providing heated air to the bottom of the limestone powder bin 1 and fluidizing the bottom material of the limestone powder bin 1;
in this embodiment, the limestone powder bin 1 is used for storing limestone powder, the bottom of the limestone powder bin 1 is provided with a gasification device 2, the gasification device 2 is communicated with a gasification main pipeline 7 through a second gasification direct-view pipeline 16, the gasification main pipeline 7 is communicated with an air main pipeline 11 through an air pipe 10, the air main pipeline 11 is communicated with a roots blower 4 through an air branch pipeline 12, the air branch pipeline 12 is provided with a first air heater 5, an air outlet of the roots blower 4 provides air, the air heater 5 heats the air, the roots blower 4 is matched with the first air heater 5 to provide heated air to the bottom of the limestone powder bin 1, and the limestone powder at the bottom of the limestone powder bin 1 is fluidized, so that the limestone powder at the bottom of the limestone powder bin 1 is kept at a certain temperature and is in a loose state, and the bottom of the limestone powder bin 1 is prevented from being hardened.
In the embodiment of the application, when the roots blower operates, the roots blower and the first electric air heater are matched to provide the limestone powder conveying hot air and the fluidizing hot air at the bottom of the limestone powder bin, so that the energy is effectively saved, and the operating cost of the whole circulating fluidized bed boiler system is reduced.
Optionally, the apparatus further comprises: a first control valve 6; the first control valve 6 is disposed on the air pipe 10, and is configured to open the first control valve 6 when the first air electric heater 5 heats the air at the air outlet of the roots blower 4 to 120 ℃, so that the heated air enters the limestone powder bin 1 through the air pipe 10, the main gasification pipeline 7 and the second gasification branch pipelines 16.
In this embodiment, an intelligent thermometer is disposed in the air branch duct 12, and is configured to monitor the temperature of the air in the air branch duct 12, and when the temperature of the air in the air branch duct 12 is greater than or equal to 120 ℃, the intelligent thermometer sends a first instruction to the central console, so that the central console opens the first control valve 6 through the first instruction, and the air reaching the target temperature enters the limestone powder bin 1 through the pipe 10, the gasification main duct 7, and the second gasification branch duct 16.
Optionally, the first control valve 6 is an electric butterfly valve.
In this embodiment, the first control valve 6 is an electric butterfly valve, and the electric butterfly valve controls the opening and closing of the butterfly valve by a power signal. The electric butterfly valve can be used as a cut-off valve, a control valve and a check valve of a pipeline system. The electric butterfly valve is provided with a manual control device, so that once a power failure occurs, the electric butterfly valve can be operated manually temporarily, and the use is not influenced.
Optionally, the apparatus further comprises: the gasification fan 3, the first gasification branch pipeline 9 and the second air electric heater 8; the gasification device 2 is communicated with the gasification fan 3 through the second gasification branch pipe 16, the gasification main pipe 7 and the first gasification branch pipe 9, the second air electric heater 8 is arranged on the first gasification branch pipe 9, and the gasification fan 3 and the second air electric heater 8 are matched to provide fluidizing hot air to the bottom of the limestone powder bin 1 to fluidize limestone powder at the bottom of the limestone powder bin 1 when the roots blower 4 stops running.
In this embodiment, the gasification device 2 is communicated with the gasification main pipe 7 through a second gasification branch pipe 16, the gasification main pipe 7 is communicated with the gasification fan 3 through a first gasification branch pipe 9, a second air electric heater 8 is arranged on the first gasification branch pipe 9, the gasification fan 3 is used for providing gasification gas, the second air electric heater 8 is used for heating the gasification gas, the gasification fan 3 and the second air electric heater 8 are matched for providing fluidizing hot air to the bottom of the limestone powder bin 1 when the roots blower 4 stops running, and fluidizing limestone powder at the bottom of the limestone powder bin 1, so that the limestone powder at the bottom of the limestone powder bin 1 is kept at a certain temperature and is in a loose state, and thus the occurrence of limestone powder hardening at the bottom of the limestone powder bin 1 is avoided.
Optionally, the air delivery rate of the gasification fan 3 is 4.45Nm 3 /min。
In the present embodiment, the air flow rate of the gasification fan 3 is 4.45Nm 3 And/min, which is used for providing sufficient gasification air to the bottom of the limestone powder bin 1.
Optionally, a second control valve is provided on the gasification main conduit 7.
In this embodiment, the second control valve is an electric butterfly valve, and the function of the second control valve is similar to that of the first control valve, and detailed description thereof is omitted here.
Optionally, a first end of the air duct 10 is communicated with the gasification main pipe 7; the second end of the air duct 10 is communicated with the air main 11; the air main pipe 11 is communicated with the Roots blower 4 through the air branch pipe 12.
In the present embodiment, the second end of the air duct 10 is vertically communicated with the air main duct 11, and the air main duct 11 and the air branch duct 12 are located on the same horizontal straight line.
Optionally, the apparatus further comprises: a feeding bin 13, a rotary feeder 14, a limestone powder conveying pipeline 15 and a boiler hearth; the outlet at the bottom of the limestone powder bin 1 is communicated with the feeding bin 13; the bottom outlet of the feeding bin 13 is communicated with the rotary feeder 3; the rotary feeder 13 is communicated with the limestone powder conveying pipeline 15; one end of the limestone powder conveying pipeline 15 is communicated with the Roots blower 4 through the main air pipeline 11 and the branch air pipeline 12; the other end of the limestone powder conveying pipeline 15 is communicated with the boiler hearth.
In this embodiment, the limestone powder bin 1 inputs the limestone powder stored therein into the limestone powder conveying pipeline 15 through the feeding bin 13 and the rotary feeder 14, one end of the limestone powder conveying pipeline 15 is communicated with the roots blower 4 through the main air pipeline 11 and the branch air pipeline 12, the other end of the limestone powder conveying pipeline 15 is communicated with the boiler furnace, and the roots blower 4 is used for providing air, so that the limestone powder in the limestone powder conveying pipeline 15 flows into the boiler furnace under the action of the air.
Optionally, the air delivery rate of the Roots blower 4 is 58Nm 3 /min。
In this embodiment, the Roots blower 4 has an air delivery rate of 58Nm 3 Min for providing enough fluidized air to the bottom of the limestone powder bin 1 and enough air conveying to the limestone powder conveying pipeline.
Optionally, the device further comprises a manual gate valve; the manual gate valve is arranged at the bottom of the limestone powder bin 1 and used for opening the manual gate valve when the feeding bin 13 needs to be fed.
In this embodiment, the bottom of the limestone powder bin 1 is provided with a manual gate valve, and the manual gate valve is opened or closed to control the feeding of the limestone powder bin 1 to the feeding bin 13.
It is intended that the foregoing description of the disclosed embodiments enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. An apparatus for preventing the bottom of a limestone powder silo from hardening, characterized in that the apparatus comprises: a limestone powder bin (1), a second gasification branch pipeline (16), a gasification main pipeline (7), a gasification device (2), an air pipe (10), a Roots blower (4), an air branch pipeline (12), an air main pipeline (11) and a first air electric heater (5);
the bottom of the limestone powder bin (1) is provided with the gasification device (2);
the gasification device (2) is communicated with the Roots blower (4) through the second gasification branch pipeline (16), the gasification main pipeline (7), the air pipe (10), the air main pipeline (11) and the air branch pipeline (12), the first air electric heater (5) is arranged on the air branch pipeline (12), and the Roots blower (4) and the first air electric heater (5) are matched to provide heated air to the bottom of the limestone powder bin (1) so as to fluidize limestone powder at the bottom of the limestone powder bin (1).
2. The apparatus of claim 1, further comprising: a first control valve (6);
the first control valve (6) is arranged on the air pipe (10) and used for opening the first control valve (6) when the first air electric heater (5) heats the air at the air outlet of the Roots blower (4) to 120 ℃, so that the heated air enters the limestone powder bin (1) through the air pipe (10), the main gasification pipeline (7) and the second sub gasification pipelines (16).
3. Device according to claim 2, characterized in that the first control valve (6) is an electric butterfly valve.
4. The apparatus of claim 1, further comprising: the gasification fan (3), the first gasification branch pipeline (9) and the second air electric heater (8);
the gasification device (2) is communicated with the gasification fan (3) through the second gasification branch pipeline (16), the gasification main pipeline (7) and the first gasification branch pipeline (9), the second air electric heater (8) is arranged on the first gasification branch pipeline (9), and the gasification fan (3) and the second air electric heater (8) are matched to provide fluidizing hot air for the bottom of the limestone powder bin (1) when the Roots fan (4) stops running, so that limestone powder at the bottom of the limestone powder bin (1) is fluidized.
5. The device according to claim 4, characterized in that a second control valve is arranged on the gasification main conduit (7).
6. The device according to any of the claims 1 to 5, characterized in that the first end of the air duct (10) communicates with the gasification main duct (7);
the second end of the air pipe (10) is communicated with the air main pipeline (11);
the air main pipeline (11) is communicated with the Roots blower (4) through the air branch pipeline (12).
7. The apparatus of any one of claims 1 to 5, further comprising: a feeding bin (13), a rotary feeder (14), a limestone powder conveying pipeline (15) and a boiler furnace;
the bottom outlet of the limestone powder bin (1) is communicated with the feeding bin (13);
the bottom outlet of the feeding bin (13) is communicated with the rotary feeder (14);
the rotary feeder (14) is communicated with the limestone powder conveying pipeline (15);
one end of the limestone powder conveying pipeline (15) is communicated with the Roots blower (4) through the main air pipeline (11) and the branch air pipeline (12);
and the other end of the limestone powder conveying pipeline (15) is communicated with the boiler hearth.
8. The device of claim 7, further comprising a manual gate valve;
the manual gate valve is installed in the bottom of limestone powder storehouse (1), be used for as required to when feeding storehouse (13) unloading, open manual gate valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221287989.5U CN218618244U (en) | 2022-05-25 | 2022-05-25 | Device for preventing lime stone powder storehouse bottom hardens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221287989.5U CN218618244U (en) | 2022-05-25 | 2022-05-25 | Device for preventing lime stone powder storehouse bottom hardens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218618244U true CN218618244U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221287989.5U Active CN218618244U (en) | 2022-05-25 | 2022-05-25 | Device for preventing lime stone powder storehouse bottom hardens |
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| Country | Link |
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| CN (1) | CN218618244U (en) |
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- 2022-05-25 CN CN202221287989.5U patent/CN218618244U/en active Active
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