CN212691737U - Water coal slurry reburning boiler - Google Patents
Water coal slurry reburning boiler Download PDFInfo
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- CN212691737U CN212691737U CN202021244978.XU CN202021244978U CN212691737U CN 212691737 U CN212691737 U CN 212691737U CN 202021244978 U CN202021244978 U CN 202021244978U CN 212691737 U CN212691737 U CN 212691737U
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Abstract
The utility model provides a coal water slurry reburning boiler, which comprises a boiler system, a slurry supply system, an air powder supply system and a detection system; the boiler system comprises a settling furnace; the slurry supply system comprises a water-coal-slurry storage tank, a water-coal-slurry pump and a water-coal-slurry spray gun, the air-powder supply system comprises a speed regulating motor, a coal-powder bin, a spiral powder feeder and an air-powder mixer, and the detection system comprises a data acquisition device, a flue gas analysis device, a temperature detection device and a data processing device. The utility model discloses an adopt and set up wind powder feeding device at the subsider top, with buggy and air feed inside the subsider to through to providing reburning wind and burning out the air inside the subsider, ensured the abundant burning of coal slurry, simultaneously, detecting system has realized the closed loop control to the coal slurry boiler, thereby improves the combustion efficiency of coal slurry boiler, reduces the pollutant and discharges.
Description
Technical Field
The utility model relates to a boiler especially relates to a coal slurry reburning boiler.
Background
The coal water slurry is widely used as a fuel for boiler combustion, and particularly in recent years, after a technical route of waste recycling is adopted, the environment-friendly coal water slurry is successfully developed, so that the environment-friendly benefit of the coal water slurry is greatly improved on the premise of not increasing the cost. Coal water slurry has also become one of the most basic and economic clean energy sources in alternative fuels.
The traditional coal water slurry boiler has the defects of low combustion efficiency, high pollutant emission, complex post-treatment such as desulfurization and denitrification and the like in the operation process.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the technical problems, the utility model provides a coal water slurry reburning boiler, which comprises a boiler system, a slurry supply system, an air powder supply system and a detection system,
the boiler system comprises a settling furnace, the slurry supply system comprises a coal water slurry storage tank, a coal water slurry pump and a coal water slurry spray gun, the coal water slurry storage tank is communicated with an inlet of the coal water slurry tank, an outlet of the coal water slurry tank is communicated with an inlet of the coal water slurry pump, an outlet of the coal water slurry pump is communicated with a first inlet of the coal water slurry spray gun, a second inlet of the coal water slurry spray gun is connected with high-pressure atomized gas, and the coal water slurry spray gun sprays the high-pressure atomized gas and the coal water slurry into the settling furnace,
the air-powder supply system comprises a speed regulating motor, a coal powder bin, a spiral powder feeder and an air-powder mixer, wherein the speed regulating motor is connected with the spiral powder feeder and used for providing power for the spiral powder feeder, an outlet of the coal powder bin is connected with the spiral powder feeder and used for providing coal powder of the coal powder bin to the spiral powder feeder, the air-powder mixer mixes primary air and the coal powder and sends the mixture into the settling furnace from the top of the settling furnace, and a secondary air inlet channel is further arranged at the top of the settling furnace to provide secondary air for the settling furnace;
the detection system comprises a data acquisition device, a flue gas analysis device, a temperature detection device and a data processing device, wherein the flue gas analysis device is arranged at an outlet of a flue of the boiler system and used for detecting flue gas emission components of the boiler system, the temperature detection device is arranged on a furnace body of the settling furnace and used for detecting the combustion temperature of the settling furnace, and the data acquisition device is used for acquiring signals of the flue gas analysis device and the temperature detection device and conveying the acquired signals to the data processing device.
According to the utility model discloses an at least one embodiment be provided with the air intake on the middle part of the furnace body of settling furnace, with to the settling furnace provides the reburning wind and burns out the wind.
According to at least one embodiment of the present invention, a stirrer is provided in the water-coal-slurry storage tank.
According to at least one embodiment of the present invention, a filter screen is provided in the water-coal slurry tank.
According to at least one embodiment of the present invention, a valve is provided at an outlet of the water-coal-slurry pump.
According to the utility model discloses an at least one embodiment, the export of valve pass through the bypass with the coal slurry storage tank intercommunication.
According to at least one embodiment of the present invention, a bypass valve is provided on the bypass.
According to at least one embodiment of the utility model, the second entrance of coal slurry spray gun is provided with flow detection device.
According to at least one embodiment of the utility model, the first entrance of coal slurry spray gun is provided with pressure measurement.
According to the utility model discloses an at least one embodiment be equipped with the inspection hole on the lateral wall of settling furnace, be used for observing the inside burning condition of settling furnace.
The utility model discloses an adopt and set up wind powder feeding device at subsider top, inside pulverized coal and air feed subsider, and through providing reburning wind and the air of burning out to subsider inside, the abundant burning of coal slurry has been ensured, and simultaneously, pollutant through combustion temperature and fume emission detects, and then adjust the coal slurry, high-pressure atomizing gas, the wind powder mixture, wind, overgrate air and reburning wind and the supply volume and the supply pressure of air of burning out, closed-loop control to the coal slurry boiler has been realized, thereby improve the combustion efficiency of coal slurry boiler, reduce the pollutant emission.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
FIG. 1 is a block diagram of the structure of a water-coal-slurry reburning boiler of the present invention.
FIG. 2 is a schematic structural view of the water-coal-slurry reburning boiler of the present invention.
Description of reference numerals:
10-fired boiler
100 boiler system
101 settling furnace
102 side wall is provided with an observation hole
103 dust removing device
200 supply thick liquid system
201 coal water slurry storage tank
202 water coal slurry tank
203 water-coal-slurry pump
204 coal water slurry spray gun
205 stirrer
206 is provided with a valve
207 strainer
208 is provided with a valve
209 valve
210 pressure detecting device
211 is provided with a flow detection device
240 water-coal-slurry spray gun
300 air-powder supply system
301 speed regulating motor
302 pulverized coal bunker
303 spiral powder feeder
304 air-powder mixer
400 detection system
401 data acquisition device
402 flue gas analysis device
403 temperature detection device
404 data processing means.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.
The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.
When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.
For descriptive purposes, the present disclosure may use spatially relative terms such as "below … …," below … …, "" below … …, "" below, "" above … …, "" above, "" … …, "" higher, "and" side (e.g., as in "side wall") to describe one component's relationship to another (other) component as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of "above" and "below". Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.
FIG. 1 shows a block diagram of a coal water slurry reburning boiler according to one embodiment of the present disclosure.
As shown in FIG. 1, the coal-water slurry reburning boiler 10 may include a boiler system 100, a slurry supply system 200, an air-powder supply system 300, and a detection system 400.
The boiler system 100 may be in the form of a settling furnace and the coal-water slurry may be combusted therein.
The slurry supply system 200 is used to store the coal-water slurry, and may provide the stored coal-water slurry to the boiler system 100. For example, it may include a coal-water slurry storage tank, a coal-water slurry pump, a coal-water slurry spray gun, and the like.
The air and pulverized coal supply system 300 may provide a mixture of air and pulverized coal to the boiler system 100 and the mixture is mixed with the coal-water slurry for combustion in the boiler system 100. Wherein the air-powder supply system 300 may include a speed-regulating motor, a coal powder bin, a spiral powder feeder, and an air-powder mixer.
The detection system 400 may monitor the state of the boiler system 100 and may include, for example, a data acquisition device. A flue gas analysis device, a temperature detection device, a data processing device and the like.
FIG. 2 shows a schematic view of a coal water slurry reburning boiler according to one embodiment of the present disclosure.
As shown in FIG. 2, the coal water slurry reburning boiler comprises a boiler system, a slurry supply system, an air powder supply system and a detection system.
The slurry supply system comprises a coal-water slurry storage tank 201, a coal-water slurry tank 202, a coal-water slurry pump 203 and a coal-water slurry spray gun 204.
The coal-water slurry storage tank 201 provides space to hold the coal-water slurry and may include an agitator 205 that may be used to agitate the coal-water slurry.
The outlet of the coal-water slurry storage tank 201 is connected with the inlet of the coal-water slurry tank 202, and a valve 206 may be disposed on the connection pipeline between the coal-water slurry storage tank 201 and the coal-water slurry tank 202.
The water-coal-slurry tank 202 may be provided with a filter screen 207, and the filter screen 207 may filter the water-coal-slurry received by the water-coal-slurry tank 202 to perform a filtering operation, so that impurities and the like may be removed.
The outlet of the water-coal slurry tank 202 is connected with the inlet of the water-coal slurry pump 203, so that the water-coal slurry in the water-coal slurry tank 202 can be provided to the water-coal slurry pump 203, and a valve 208 can be arranged on the connecting pipeline between the water-coal slurry tank 202 and the water-coal slurry pump 203.
The outlet of the coal-water slurry pump 203 is communicated with the first inlet of the coal-water slurry spray gun 204, and a valve 209 can be arranged on a connecting pipeline between the coal-water slurry pump 203 and the coal-water slurry spray gun 204. The outlet of the valve 209 is communicated with the coal water slurry storage tank through a bypass.
In an alternative embodiment of the present disclosure, a pressure detection device 210 may be disposed at the first inlet of the coal-water slurry injection gun 204, and the pressure detection device 210 may be, for example, a pressure gauge.
Another inlet of the coal-water slurry injection lance 240 may be connected to a high pressure atomizing gas, and the coal-water slurry injection lance 204 injects the high pressure atomizing gas and the coal-water slurry into the boiler system.
Wherein a flow rate detecting device 211 may be provided on the pipeline for supplying the high pressure atomizing gas.
The air-powder supply system comprises a speed regulating motor 301, a coal-powder bin 302, a spiral powder feeder 303 and an air-powder mixer 304.
The speed regulating motor 301 is connected with the spiral powder feeder 303 and used for providing power for the spiral powder feeder 303, the outlet of the coal powder bin 302 is connected with the spiral powder feeder 303 and used for supplying coal powder to the spiral powder feeder 303, and the primary air and the coal powder are mixed by the air-powder mixer 304.
Overfire air may enter the settling furnace 101 of the boiler system from the top of the settling furnace 101. And a secondary air inlet channel is also arranged at the top of the settling furnace 101 to provide secondary air into the settling furnace.
Thus, a mixture of the coal water slurry, the primary air and pulverized coal mixture, and the secondary air is burned in the settling furnace 101.
The detection system comprises a data acquisition device 401, a smoke analysis device 402, a temperature detection device 403 and a data processing device 404.
The flue gas analyzing device 402 is disposed at an outlet of a flue of the boiler system for detecting flue gas emission components of the boiler system.
The temperature detection device 403 is provided in the furnace body of the settling furnace 101, and detects the combustion temperature in the settling furnace 101.
The data acquisition device 401 is used for acquiring signals of the flue gas analysis device 402 and the temperature detection device 403, and transmitting the acquired signals to the data processing device 404.
In an alternative embodiment of the present disclosure, an air inlet is provided on the middle of the body of the settling furnace 101 to provide reburning air and over-fired air into the settling furnace 101.
An observation hole 102 is provided in a side wall of the settling furnace 101 to observe the internal combustion of the settling furnace 101.
Furthermore, a dust removal device 103 may be provided downstream of the settling furnace 101 to purify the generated flue gas and the like. The dust removing device 103 is connected with the settling furnace 101 through a pipeline, and the flue gas treated by the dust removing device 103 can be discharged to a chimney.
The utility model discloses an adopt and set up wind powder feeding device at subsider top, inside pulverized coal and air feed subsider, and through providing reburning wind and the air of burning out to subsider inside, the abundant burning of coal slurry has been ensured, and simultaneously, pollutant through combustion temperature and fume emission detects, and then adjust the coal slurry, high-pressure atomizing gas, the wind powder mixture, wind, overgrate air and reburning wind and the supply volume and the supply pressure of air of burning out, closed-loop control to the coal slurry boiler has been realized, thereby improve the combustion efficiency of coal slurry boiler, reduce the pollutant emission.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. A water-coal-slurry reburning boiler is characterized by comprising a boiler system, a slurry supply system, an air-powder supply system and a detection system,
the boiler system comprises a settling furnace, the slurry supply system comprises a coal water slurry storage tank, a coal water slurry pump and a coal water slurry spray gun, the coal water slurry storage tank is communicated with an inlet of the coal water slurry tank, an outlet of the coal water slurry tank is communicated with an inlet of the coal water slurry pump, an outlet of the coal water slurry pump is communicated with a first inlet of the coal water slurry spray gun, a second inlet of the coal water slurry spray gun is connected with high-pressure atomized gas, and the coal water slurry spray gun sprays the high-pressure atomized gas and the coal water slurry into the settling furnace,
the air-powder supply system comprises a speed regulating motor, a coal powder bin, a spiral powder feeder and an air-powder mixer, wherein the speed regulating motor is connected with the spiral powder feeder and used for providing power for the spiral powder feeder, an outlet of the coal powder bin is connected with the spiral powder feeder and used for providing coal powder of the coal powder bin to the spiral powder feeder, the air-powder mixer mixes primary air and the coal powder and sends the mixture into the settling furnace from the top of the settling furnace, and a secondary air inlet channel is further arranged at the top of the settling furnace to provide secondary air for the settling furnace;
the detection system comprises a data acquisition device, a flue gas analysis device, a temperature detection device and a data processing device, wherein the flue gas analysis device is arranged at an outlet of a flue of the boiler system and used for detecting flue gas emission components of the boiler system, the temperature detection device is arranged on a furnace body of the settling furnace and used for detecting the combustion temperature of the settling furnace, and the data acquisition device is used for acquiring signals of the flue gas analysis device and the temperature detection device and conveying the acquired signals to the data processing device.
2. The coal-water slurry reburning boiler of claim 1, wherein an air inlet is provided at a middle portion of the body of the settling furnace to provide reburning air and over-fired air to the settling furnace.
3. The coal-water slurry reburning boiler of claim 1 or 2, wherein an agitator is disposed in the coal-water slurry storage tank.
4. The coal-water slurry reburning boiler of claim 1 or 2, wherein a screen is disposed in the coal-water slurry tank.
5. The coal-water slurry reburning boiler of claim 1 or 2, wherein a valve is arranged at the outlet of the coal-water slurry pump.
6. The coal-water slurry reburning boiler of claim 5, wherein the outlet of the valve is communicated with the coal-water slurry storage tank through a bypass.
7. The coal water slurry reburning boiler of claim 6, wherein a bypass valve is disposed on the bypass.
8. The coal-water slurry reburning boiler of claim 1 or 2, wherein a flow detection device is provided at the second inlet of the coal-water slurry lance.
9. The coal-water slurry reburning boiler of claim 1 or 2, wherein a pressure detecting device is provided at the first inlet of the coal-water slurry lance.
10. The coal-water slurry reburning boiler of claim 1 or 2, wherein an observation hole is provided on a side wall of the settling furnace for observing internal combustion conditions of the settling furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021244978.XU CN212691737U (en) | 2020-06-30 | 2020-06-30 | Water coal slurry reburning boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021244978.XU CN212691737U (en) | 2020-06-30 | 2020-06-30 | Water coal slurry reburning boiler |
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| Publication Number | Publication Date |
|---|---|
| CN212691737U true CN212691737U (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021244978.XU Active CN212691737U (en) | 2020-06-30 | 2020-06-30 | Water coal slurry reburning boiler |
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| CN (1) | CN212691737U (en) |
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- 2020-06-30 CN CN202021244978.XU patent/CN212691737U/en active Active
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