CN214166229U - Accurate coal blending system for coal-fired power plant - Google Patents
Accurate coal blending system for coal-fired power plant Download PDFInfo
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- CN214166229U CN214166229U CN202022719835.6U CN202022719835U CN214166229U CN 214166229 U CN214166229 U CN 214166229U CN 202022719835 U CN202022719835 U CN 202022719835U CN 214166229 U CN214166229 U CN 214166229U
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Abstract
The utility model discloses a accurate coal blending system for coal fired power plant belongs to the coal fired management field of thermal power factory. The utility model discloses a precision coal blending system for coal fired power plant, through the coal stream coal quality of on-line measuring instrument real-time detection coaling main belt, control center is in contrasting target coal quality and the coal stream coal quality that receives, controls the deviation of coal stream coal quality and target coal quality in the preset range through the coal flow on the adjustment coaling belt; this system improves on original coal blending system for a short time, can realize the real-time detection and the real-time adjustment to the coal blending, has solved the boiler combustion unstability, the boiler slagging scorification scheduling problem of bringing because of the coal quality is changeable, the utility model provides the high accuracy of power plant's coal blending reduces the deviation of actually going into stove coal quality and anticipated coal quality.
Description
Technical Field
The utility model belongs to coal-fired management field of thermal power factory, especially a accurate coal blending system for coal fired power plant.
Background
The coal types in China are more and are influenced by coal market fluctuation, the actual coal of most coal-fired power plants is not designed, the power plants actively or forcibly mix and burn more coal types with larger deviation with the designed coal quality, the coal blending mixing burning is one of the main means for the profit of certain coal-fired power plants.
Because the types of the blended coal are various and the coal quality is changeable, the problem that the deviation between the actual coal quality for burning in the boiler and the expected coal quality for burning is overlarge often occurs in the coal blending and burning process of the power plant, and therefore the problems of unstable boiler combustion, boiler slagging and the like are caused, and great potential safety hazards are caused to the operation of the power plant. For coal-fired power plants, there is an urgent need for accurate coal blending.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the deviation of actual coal quality for combustion and expected coal quality for combustion is too large when the power plant often appears in the coal blending and burning process, and provide an accurate coal blending system for coal-fired power plant.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
an accurate coal blending system for a coal-fired power plant comprises a coal yard, wherein a plurality of coal yard partitions are arranged in the coal yard and are respectively connected with a coal feeding belt, belt weighers are arranged on the coal feeding belts, the coal feeding belts are converged to an inlet of a coal feeding main belt, a coal quality online detection instrument is arranged on the coal feeding main belt, and a coal bunker is arranged at an outlet of the coal feeding main belt;
the belt weigher and the coal quality online detection instrument are communicated with the control center;
the belt weigher is used for sending corresponding coal flow data to the control center;
the coal quality online detection instrument is used for sending coal flow coal quality data of the coal feeding main belt to the control center;
the control center is used for comparing the target coal quality with the received coal quality of the coal flow, and controlling the deviation between the coal quality of the coal flow and the target coal quality within a preset range by adjusting the coal flow on the upper coal belt.
Further, the coal quality online detection device carries out detection based on the LIBS method.
Further, the coal quality on-line detection device is used for detecting based on a neutron activation method.
Further, the coal quality on-line detection device detects based on an X-ray method.
Further, the coal quality detected by the coal quality online detection device comprises a heating value Q, moisture M and ash A.
Furthermore, 3 coal yard partitions are arranged in the coal yard.
Furthermore, raw coal with different coal qualities is stored in the coal yard subareas.
Furthermore, a fourth belt scale is arranged on the main coal feeding belt.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a precision coal blending system for coal fired power plant, through the coal stream coal quality of on-line measuring instrument real-time detection coaling main belt, control center is in contrasting target coal quality and the coal stream coal quality that receives, controls the deviation of coal stream coal quality and target coal quality in the preset range through the coal flow on the adjustment coaling belt; this system improves on original coal blending system for a short time, can realize the real-time detection and the real-time adjustment to the coal blending, has solved the boiler combustion unstability, the boiler slagging scorification scheduling problem of bringing because of the coal quality is changeable, the utility model provides the high accuracy of power plant's coal blending reduces the deviation of actually going into stove coal quality and anticipated coal quality.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1-a coal yard; 2-coal yard area one; 3-coal yard zone two; 4-three areas of a coal yard; 5-a first coal feeding belt; 6-second coal feeding belt; 7-third feeding a coal belt; 8-a first belt scale; 9-a second belt scale; 10-third belt weigher; 11-coal quality on-line detecting instrument; 12-a fourth belt scale; 13-coal feeding main belt; 14-a first bunker; 15-a second bunker; 16-a third bunker; 17-a fourth bunker; 18-control center.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above 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 data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, fig. 1 is a schematic structural diagram of the present invention, an accurate coal blending system for a coal-fired power plant includes a coal yard 1, the coal yard 1 is composed of a first coal yard zone 2, a second coal yard zone 3, and a third coal yard zone 4, the first coal yard zone 2 is connected with a first coal feeding belt 5, the first coal feeding belt 5 is provided with a first belt scale 8, the second coal feeding belt 6 is provided with a second belt scale 9, the third coal feeding belt 7 is provided with a third belt scale 10, the first coal feeding belt 5, the second coal feeding belt 6 and the third coal feeding belt 7 intersect to an inlet of a coal feeding main belt 13, the coal feeding main belt 13 is provided with an online coal quality detecting instrument 11 and a fourth scale 12, an outlet of the coal feeding main belt 13 is provided with a first coal bunker 14, a second coal bunker 15, a third coal bunker 16 and a fourth coal bunker 17;
the first belt weigher 8, the second belt weigher 9, the third belt weigher 10, the coal quality on-line detection instrument 11 and the fourth belt weigher 12 are all communicated with the control center 18;
the first belt weigher 8, the second belt weigher 9, the third belt weigher 10 and the fourth belt weigher 12 are used for sending respective coal flow data to the control center 18;
the coal quality online detection instrument 11 is used for detecting the coal flow on the coal feeding main belt 13 in real time and sending coal flow coal quality data to the control center 18;
the control center 18 is configured to compare the target coal quality with the received coal quality of the coal flow, and control the deviation between the coal quality of the coal flow and the target coal quality within a preset range by adjusting the coal flow rate on the upper coal belt.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (4)
1. The accurate coal blending system for the coal-fired power plant is characterized by comprising a coal yard (1), wherein a plurality of coal yard partitions are arranged in the coal yard (1), the coal yard partitions are respectively connected with a coal feeding belt, belt weighers are arranged on the coal feeding belt, the coal feeding belt converges at an inlet of a coal feeding main belt (13), a coal quality online detection instrument (11) is arranged on the coal feeding main belt (13), and a coal bunker is arranged at an outlet of the coal feeding main belt (13);
the belt weigher and the coal quality online detection instrument (11) are communicated with a control center (18);
the belt weigher is used for sending corresponding coal flow data to the control center (18);
the coal quality online detection instrument (11) is used for sending coal flow coal quality data of the coal feeding main belt (13) to the control center (18);
the control center (18) is used for comparing the target coal quality with the received coal quality of the coal flow, and controlling the deviation between the coal quality of the coal flow and the target coal quality within a preset range by adjusting the coal flow on the upper coal belt.
2. The accurate coal blending system for a coal-fired power plant according to claim 1, characterized in that 3 coal yard partitions are arranged in the coal yard (1).
3. The precision coal blending system for a coal-fired power plant according to claim 1, wherein the coal yard partitions store raw coal with different coal qualities.
4. The precision coal blending system for a coal-fired power plant according to claim 1, characterized in that a fourth belt scale (12) is provided on the coal feeding main belt (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022719835.6U CN214166229U (en) | 2020-11-21 | 2020-11-21 | Accurate coal blending system for coal-fired power plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022719835.6U CN214166229U (en) | 2020-11-21 | 2020-11-21 | Accurate coal blending system for coal-fired power plant |
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| CN214166229U true CN214166229U (en) | 2021-09-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114345532A (en) * | 2022-01-06 | 2022-04-15 | 宝武集团鄂城钢铁有限公司 | Coal preparation system and process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114345532A (en) * | 2022-01-06 | 2022-04-15 | 宝武集团鄂城钢铁有限公司 | Coal preparation system and process |
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