JP2020116537A5 - - Google Patents
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- JP2020116537A5 JP2020116537A5 JP2019011245A JP2019011245A JP2020116537A5 JP 2020116537 A5 JP2020116537 A5 JP 2020116537A5 JP 2019011245 A JP2019011245 A JP 2019011245A JP 2019011245 A JP2019011245 A JP 2019011245A JP 2020116537 A5 JP2020116537 A5 JP 2020116537A5
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- Prior art keywords
- fuel
- powder layer
- rotary table
- solid fuel
- layer height
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- 239000000843 powder Substances 0.000 claims description 32
- 239000000446 fuel Substances 0.000 claims description 30
- 239000004449 solid propellant Substances 0.000 claims description 28
- 239000002028 Biomass Substances 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims 1
- 238000010248 power generation Methods 0.000 claims 1
- 238000010298 pulverizing process Methods 0.000 claims 1
- 238000013459 approach Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
Description
本発明の一態様に係る固体燃料粉砕装置は、固体燃料としてバイオマス燃料またはバイオマス燃料と石炭との混合燃料を粉砕及び分級するための固体燃料粉砕装置であって、回転テーブルと、前記回転テーブルとの間で固体燃料を粉砕する粉砕ローラと、前記回転テーブルの鉛直上方に位置し、前記粉砕ローラによって粉砕された粉砕後燃料を分級する回転式分級機と、前記回転テーブル上に形成される前記粉砕後燃料による粉体層高さを計測する粉体層高さ計測手段と、前記粉体層高さ計測手段の検出信号を得る制御部と、を備え、前記粉体層高さ計測手段は、前記回転テーブルと前記回転式分級機との間の高さ方向の圧力分布に基づいて前記回転テーブル上に形成される前記粉砕後燃料による粉体層高さを計測ように構成され、前記制御部は、前記検出信号に基づいて、前記粉体層高さが所定値に達したとき、前記粉体層高さを減少させるように運転条件を変更する。 The solid fuel crusher according to one aspect of the present invention is a solid fuel crusher for crushing and classifying a biomass fuel or a mixed fuel of a biomass fuel and coal as a solid fuel, and includes a rotary table and the rotary table. A crushing roller that crushes solid fuel between the two, a rotary classifier that is located vertically above the rotary table and classifies the crushed fuel crushed by the crushing roller, and the rotary classifier formed on the rotary table. The powder layer height measuring means includes a powder layer height measuring means for measuring the powder layer height of the fuel after crushing and a control unit for obtaining a detection signal of the powder layer height measuring means. , The control is configured to measure the height of the powder layer due to the crushed fuel formed on the rotary table based on the pressure distribution in the height direction between the rotary table and the rotary classifier. Based on the detection signal, the unit changes the operating conditions so as to reduce the powder layer height when the powder layer height reaches a predetermined value .
回転テーブルと粉砕ローラによって粉砕された粉砕後の固体燃料は、粉砕燃料となり所定高さの粉体層を回転テーブル上に形成する。粉体層とは搬送ガスで吹き上げられた粉砕後燃料が他よりも高い濃度で滞留している領域を示している。また、粉体層高さは、例えば基準位置を回転テーブルの粉砕面として、鉛直上方への位置を示している。粉体層高さが高くなり、鉛直上方の回転式分級機に近づくと、一部の粗粒燃料が回転式分級機で分級されずに固体燃料粉砕装置から微粒燃料と混在してバーナ部に供給されるため、バーナ部の燃焼性能が低下するおそれがある。そこで、粉体層高さ計測手段によって粉体層高さを計測することとした。これにより適正な粉体層高さを調整して、固体燃料粉砕装置内での分級性能の低下を抑制することができる。
なお、固体燃料としては、例えば、バイオマス燃料またはバイオマス燃料と石炭との混合燃料が用いられる。
制御部は、粉体層高さ計測手段の検出信号に基づいて、粉体層高さを減少させるように運転条件を変更する。これにより、適正な粉体層高さを実現することで、所望の分級性能を維持することができる。
この運転条件の変更は、固体燃料粉砕装置の試運転時に用いることもできるし、運転中に用いることもできる。
The solid fuel after crushing crushed by the rotary table and the crushing roller becomes crushed fuel, and a powder layer having a predetermined height is formed on the rotary table. The powder layer indicates a region where the pulverized fuel blown up by the transport gas stays at a higher concentration than the others. Further, the height of the powder layer indicates a position vertically upward, for example, with the reference position as the crushing surface of the rotary table. When the height of the powder layer becomes high and approaches the rotary classifier vertically above, some coarse-grained fuel is not classified by the rotary classifier and is mixed with the fine-grained fuel from the solid fuel crusher to the burner section. Since it is supplied, the combustion performance of the burner portion may deteriorate. Therefore, it was decided to measure the powder layer height by the powder layer height measuring means. As a result, the appropriate powder layer height can be adjusted, and deterioration of the classification performance in the solid fuel crusher can be suppressed.
As the solid fuel, for example, a biomass fuel or a mixed fuel of biomass fuel and coal is used.
The control unit changes the operating conditions so as to reduce the powder layer height based on the detection signal of the powder layer height measuring means. As a result, the desired classification performance can be maintained by realizing an appropriate powder layer height.
This change in operating conditions can be used during the trial run of the solid fuel crusher, or can be used during operation.
また、本発明の一態様に係る固体燃料粉砕装置の制御方法では、回転テーブルと、前記回転テーブルとの間で固体燃料を粉砕する粉砕ローラと、前記回転テーブルの鉛直上方に位置し、前記粉砕ローラによって粉砕された粉砕後燃料を分級する回転式分級機と、を備え、固体燃料としてバイオマス燃料またはバイオマス燃料と石炭との混合燃料を粉砕及び分級するための固体燃料粉砕装置の制御方法であって、前記回転テーブルと前記回転式分級機との間の高さ方向の圧力分布に基づいて前記回転テーブル上に形成される前記粉砕後燃料による粉体層高さを計測して、前記粉体層高さが所定値に達したとき、前記粉体層高さを減少させるように運転条件を変更する。 Further, in the control method of the solid fuel crushing device according to one aspect of the present invention, the rotary table, the crushing roller for crushing the solid fuel between the rotary table, and the crushing roller located vertically above the rotary table. It is a control method of a solid fuel crusher for crushing and classifying a biomass fuel as a solid fuel or a mixed fuel of a biomass fuel and coal , which is equipped with a rotary classifier for classifying the crushed fuel crushed by a roller. Then, the height of the powder layer formed on the rotary table by the crushed fuel is measured based on the pressure distribution in the height direction between the rotary table and the rotary classifier, and the powder is measured. When the layer height reaches a predetermined value, the operating conditions are changed so as to reduce the powder layer height .
Claims (7)
回転テーブルと、
前記回転テーブルとの間で固体燃料を粉砕する粉砕ローラと、
前記回転テーブルの鉛直上方に位置し、前記粉砕ローラによって粉砕された粉砕後燃料を分級する回転式分級機と、
前記回転テーブル上に形成される前記粉砕後燃料による粉体層高さを計測する粉体層高さ計測手段と、
前記粉体層高さ計測手段の検出信号を得る制御部と、
を備え、
前記粉体層高さ計測手段は、前記回転テーブルと前記回転式分級機との間の高さ方向の圧力分布に基づいて前記回転テーブル上に形成される前記粉砕後燃料による粉体層高さを計測するように構成され、
前記制御部は、前記検出信号に基づいて、前記粉体層高さが所定値に達したとき、前記粉体層高さを減少させるように運転条件を変更する固体燃料粉砕装置。 A solid fuel crusher for crushing and classifying biomass fuel or a mixed fuel of biomass fuel and coal as a solid fuel.
With a turntable,
A crushing roller that crushes solid fuel between the rotary table and
A rotary classifier located vertically above the rotary table and classifying the crushed fuel crushed by the crushing roller.
A powder layer height measuring means for measuring the height of the powder layer formed on the rotary table by the pulverized fuel, and a powder layer height measuring means.
A control unit that obtains a detection signal from the powder layer height measuring means,
Equipped with
The powder layer height measuring means is the powder layer height due to the pulverized fuel formed on the rotary table based on the pressure distribution in the height direction between the rotary table and the rotary classifier. Is configured to measure
The control unit is a solid fuel crushing device that changes operating conditions so as to reduce the powder layer height when the powder layer height reaches a predetermined value based on the detection signal .
前記固体燃料粉砕装置にて粉砕された前記粉砕後燃料を燃焼して蒸気を生成するボイラと、
前記ボイラによって生成された蒸気を用いて発電する発電部と、
を備えている発電プラント。 The solid fuel crusher according to any one of claims 1 to 5 .
A boiler that burns fuel after crushing by the solid fuel crusher to generate steam, and
A power generation unit that generates electricity using the steam generated by the boiler,
Power plant equipped with.
前記回転テーブルとの間で固体燃料を粉砕する粉砕ローラと、
前記回転テーブルの鉛直上方に位置し、前記粉砕ローラによって粉砕された粉砕後燃料を分級する回転式分級機と、
を備え、固体燃料としてバイオマス燃料またはバイオマス燃料と石炭との混合燃料を粉砕及び分級するための固体燃料粉砕装置の制御方法であって、
前記回転テーブルと前記回転式分級機との間の高さ方向の圧力分布に基づいて前記回転テーブル上に形成される前記粉砕後燃料による粉体層高さを計測して、
前記粉体層高さが所定値に達したとき、前記粉体層高さを減少させるように運転条件を変更する固体燃料粉砕装置の制御方法。 With a turntable,
A crushing roller that crushes solid fuel between the rotary table and
A rotary classifier located vertically above the rotary table and classifying the crushed fuel crushed by the crushing roller.
A method for controlling a solid fuel crusher for crushing and classifying biomass fuel or a mixed fuel of biomass fuel and coal as a solid fuel.
The height of the powder layer formed on the rotary table by the crushed fuel is measured based on the pressure distribution in the height direction between the rotary table and the rotary classifier .
A control method for a solid fuel crusher that changes operating conditions so as to reduce the powder layer height when the powder layer height reaches a predetermined value .
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019011245A JP7274876B2 (en) | 2019-01-25 | 2019-01-25 | Solid fuel crusher, power plant equipped with same, and control method for solid fuel crusher |
| CN202010076025.5A CN111482243B (en) | 2019-01-25 | 2020-01-22 | Solid fuel pulverizer, power generation facility provided with same, and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019011245A JP7274876B2 (en) | 2019-01-25 | 2019-01-25 | Solid fuel crusher, power plant equipped with same, and control method for solid fuel crusher |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2020116537A JP2020116537A (en) | 2020-08-06 |
| JP2020116537A5 true JP2020116537A5 (en) | 2022-01-21 |
| JP7274876B2 JP7274876B2 (en) | 2023-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2019011245A Active JP7274876B2 (en) | 2019-01-25 | 2019-01-25 | Solid fuel crusher, power plant equipped with same, and control method for solid fuel crusher |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7274876B2 (en) |
| CN (1) | CN111482243B (en) |
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| CN115518764A (en) * | 2022-10-12 | 2022-12-27 | 深圳市尚水智能设备有限公司 | Feeding control method of vertical grinding machine and vertical grinding machine |
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