JPS6246123A - Sox concentration control method in high speed fluidized bed boiler - Google Patents
Sox concentration control method in high speed fluidized bed boilerInfo
- Publication number
- JPS6246123A JPS6246123A JP60183394A JP18339485A JPS6246123A JP S6246123 A JPS6246123 A JP S6246123A JP 60183394 A JP60183394 A JP 60183394A JP 18339485 A JP18339485 A JP 18339485A JP S6246123 A JPS6246123 A JP S6246123A
- Authority
- JP
- Japan
- Prior art keywords
- sox
- value
- signal
- amount
- coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2239/00—Fuels
- F23N2239/02—Solid fuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は高速流動床ボイラのＳＯｘ濃度制御方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for controlling SOx concentration in a high-speed fluidized bed boiler.
高速流動床ボイラは新しい技術のボイラであるため、こ
のボイラに関するＳＯｘ濃度の制御方法の従来技術はな
い。参考として従来の沸騰型流動床ボイラに於けるＳＯ
ｘ濃度制御方法について説明する。Since the high speed fluidized bed boiler is a new boiler technology, there is no prior art method for controlling the SOx concentration for this boiler. For reference, SO in a conventional boiling type fluidized bed boiler
The x density control method will be explained.
脱硫率は石灰石等の脱硫材の量により決まる為石炭中の
硫′黄（Ｓ）分に見合った量の脱硫材を投入すればよく
２通常石炭量に比例した量（脱硫材量／石炭量の値が一
定）の脱硫材を投入している。Since the desulfurization rate is determined by the amount of desulfurization material such as limestone, it is sufficient to input an amount of desulfurization material commensurate with the sulfur (S) content in the coal.2 Usually, the amount proportional to the amount of coal (amount of desulfurization material/amount of coal) A desulfurizing agent with a constant value of
しかしながら脱硫材量／石炭量の比が一定であっても石
炭中の８分、コンバスタ温度が変動すれば、脱硫率やボ
イラ出口ＳＯｘ濃度が異なってくる為、ボイラ出口のＳ
Ｏｘ濃度を検出して。However, even if the ratio of desulfurization material amount/coal amount is constant, if the combustor temperature in the coal changes, the desulfurization rate and boiler outlet SOx concentration will differ, so the boiler outlet S
Detect Ox concentration.
ＳＯｘ濃度が規定値以下となるようにボイラの運転員が
脱硫材の量を増減している。Boiler operators are increasing or decreasing the amount of desulfurization material so that the SOx concentration is below the specified value.
高速流動床ボイラでは石炭中のＳ分１石灰石の種類粒径
、コンバスタ燃焼温度等により脱硫率が異なりＳＯｘを
規制値以下のある一定の値にコントロールすることが困
難であった。本発明者等は、上記問題点を解決するため
に鋭意研究を重ねた結果、排ガス中のＳＯｘ値を計測す
ることによってＳＯｘ値を期待値に制御し得る事を見い
出し９本発明をなすに至った。In high-speed fluidized bed boilers, the desulfurization rate varies depending on the type and particle size of the S1 limestone in the coal, the combustor combustion temperature, etc., and it has been difficult to control SOx to a certain value below the regulation value. As a result of extensive research to solve the above-mentioned problems, the present inventors discovered that it is possible to control the SOx value to the expected value by measuring the SOx value in the exhaust gas.9 The present invention has been completed. Ta.
すなわち本発明はコンバスタ内に脱硫材を投入して排ガ
スのＳＯｘ量を低減する脱硫方法において、脱硫材の投
入量を２石炭投入量に比例した量に、排ガスのＳＯｘ量
値と予め設定したＳＯｘ量値との偏差値より求めた調節
量を加算してコントロールすることを特徴とする高速流
動床ボイラのＢｏｘ濃度制御方法を提供するものである
。That is, the present invention provides a desulfurization method in which a desulfurization material is introduced into a combustor to reduce the amount of SOx in exhaust gas. The present invention provides a method for controlling the Box concentration of a high-speed fluidized bed boiler, which is characterized in that control is performed by adding an adjustment amount determined from a deviation value from a quantity value.
石炭量に比例する関数で定められた脱硫材投入量を基本
とし、ボイラ出口の排ガス中のＳＯｘ濃度を計測し、そ
の信号を使って脱硫材投入量を変化させ、 ＳＯｘ濃度
を制御する。具体的にはボイラの石炭供給源から石炭供
給量信号を９発信し、関数発生器に入力し１石炭供給量
に比例した量の脱硫材を供給する信号を加算器に入力す
る。一方ボイラの排ガスＳＯｘ濃度を検出し、その信号
を予め規定のＳ ＯＸ値が設定しである調節計に入力し
、 ＳＯ，ｒの設定値と検出値を比較演算して偏差値を
調節計より出力し、前記加算器に入力する。加算器で石
炭供給量に比例した脱硫剤投入量信号と前記偏差値信号
を加算し、脱硫剤投入量調節弁に信号を送り、脱硫材投
入量を調節する。Based on the amount of desulfurization agent input determined by a function proportional to the amount of coal, the SOx concentration in the exhaust gas at the boiler outlet is measured, and the signal is used to change the amount of desulfurization agent input to control the SOx concentration. Specifically, nine coal supply amount signals are transmitted from the coal supply source of the boiler, inputted to a function generator, and a signal for supplying an amount of desulfurization material proportional to one coal supply amount is inputted to an adder. On the other hand, the boiler exhaust gas SOx concentration is detected, the signal is input to a controller that has a preset SOx value, the set value of SO, r is compared with the detected value, and the deviation value is calculated from the controller. output and input to the adder. An adder adds the desulfurizing agent input amount signal proportional to the coal supply amount and the deviation value signal, and sends a signal to the desulfurizing agent input amount control valve to adjust the desulfurizing agent input amount.
第１図に示す如く、高速流動床ボイラはコンバスタ１．
サイクロン５．外部熱交換器７．後部煙道熱交換器６等
により構成されている。As shown in FIG. 1, the high speed fluidized bed boiler consists of a combustor 1.
Cyclone 5. External heat exchanger7. It is composed of a rear flue heat exchanger 6 and the like.
コンバスタ１へは燃料供給ライン３から石炭等の燃料を
、空気供給ライン４から燃焼用の空気を投入してコンバ
スタ１で燃焼させる。一方。Fuel such as coal is inputted into the combustor 1 from a fuel supply line 3, and air for combustion is inputted from an air supply line 4, and the combustor 1 burns the fuel. on the other hand.
その燃焼反応で発生するＳ Ｏｘを除去するために脱硫
材供給ライン２から石灰石等の脱硫材が投入されている
。A desulfurizing material such as limestone is introduced from a desulfurizing material supply line 2 to remove SOx generated by the combustion reaction.
本発明による一実施例として後部煙道熱交換器６の下流
にＳＯｘ計８を設け１発生ＳＯｘの濃度を検出し、その
信号８ａを調節計１０に入力する。As an embodiment of the present invention, an SOx meter 8 is provided downstream of the rear flue heat exchanger 6 to detect the concentration of generated SOx and input the signal 8a to the controller 10.
調節計１０は、予め規定のＳＯｘ値が設定してあり。The controller 10 has a specified SOx value set in advance.
前記発生ＳＯｘ値と比較演算して、その偏差値を ・出
力する。一方９石炭供給源からは石炭供給量信号３ａを
発信し、関数発生器１１に入力して９石炭供給量に見合
った脱硫材投入量値の関数信号を出力する。Compare with the generated SOx value and output the deviation value. On the other hand, a coal supply amount signal 3a is transmitted from the 9 coal supply source, inputted to a function generator 11, and outputted as a function signal of a desulfurization material input amount value commensurate with the 9 coal supply amount.
調節器１０からの偏差値信号と関数発生器１１がらの関
数信号とを加算機１２に入力して、脱硫材投入量値を修
正した信号を出力し、その出力でコンバスタ１への脱硫
材供給ライン２に設けた脱硫材投入量調節弁９の弁開度
を調節することによりコンバスタ１への脱硫材投入量を
調節するものである。The deviation value signal from the regulator 10 and the function signal from the function generator 11 are input to the adder 12, which outputs a signal that corrects the desulfurizing material input amount value, and the desulfurizing material is supplied to the combustor 1 using the output. The amount of desulfurization material introduced into the combustor 1 is adjusted by adjusting the opening degree of the desulfurization material input amount regulating valve 9 provided in the line 2.
石炭供給量に見合う量の脱硫材を投入するだけでなく、
排ガス中のＳＯｘ濃度を検出して脱硫材投入量を調節す
るため２石炭中のＳ分、コンバスタ温度が変動しても脱
硫剤投入量の微調整によってＳＯｘ濃度を規定値以下に
抑えることができる。In addition to adding desulfurization material in an amount commensurate with the amount of coal supplied,
The amount of desulfurizing agent input is adjusted by detecting the SOx concentration in the exhaust gas, so even if the S content in the coal or the combustor temperature fluctuates, the SOx concentration can be kept below the specified value by finely adjusting the amount of desulfurizing agent input. .
第１図は本発明の一実施例としての高速流動床ボイラの
系統図、第２図は同じ＜ ＳＯＷ濃度制御系統図。
１・・コンバスタ、２・・・脱硫材供給ライン、 ３ａ
・・・石炭供給量信号、８・・ＳＯｘ計、９・・・脱硫
材投入量調節弁、１０・・・調節計、１１・・関数発生
器、１２・・・加算機FIG. 1 is a system diagram of a high-speed fluidized bed boiler as an embodiment of the present invention, and FIG. 2 is the same SOW concentration control system diagram. 1... Combustor, 2... Desulfurization material supply line, 3a
...Coal supply amount signal, 8.. SOx meter, 9.. Desulfurization material input amount control valve, 10.. Controller, 11.. Function generator, 12.. Adder.
Claims (1)
量を、石炭投入量に比例した量に、排ガスのＳＯ＿ｘ量
値と予め設定したＳＯ＿ｘ量値との偏差値より求めた調
節量を加算してコントロールすることを特徴とする高速
流動床ボイラのＳＯ＿ｘ濃度制御方法。[Claims] In a desulfurization method that reduces the amount of SO_x in exhaust gas by introducing a desulfurization material into a combustor, the amount of desulfurization material introduced is set in advance to an amount proportional to the amount of coal input and the amount of SO_x in the exhaust gas. A method for controlling SO_x concentration in a high-speed fluidized bed boiler, characterized in that control is performed by adding an adjustment amount obtained from a deviation value from a determined SO_x amount value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60183394A JPS6246123A (en) | 1985-08-21 | 1985-08-21 | Sox concentration control method in high speed fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60183394A JPS6246123A (en) | 1985-08-21 | 1985-08-21 | Sox concentration control method in high speed fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6246123A true JPS6246123A (en) | 1987-02-28 |
Family
ID=16135007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60183394A Pending JPS6246123A (en) | 1985-08-21 | 1985-08-21 | Sox concentration control method in high speed fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6246123A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5723099A (en) * | 1996-05-17 | 1998-03-03 | Steinke; Richard A. | Method and apparatus for remediation of toxic flue gases |
| US6123910A (en) * | 1994-06-14 | 2000-09-26 | Hitachi, Ltd. | Method of predicting and controlling harmful oxide and apparatus therefor |
| WO2010084559A1 (en) * | 2009-01-23 | 2010-07-29 | 出光興産株式会社 | Combustion apparatus in which emission of n2o is controlled, and method for controlling emission of n2o |
-
1985
- 1985-08-21 JP JP60183394A patent/JPS6246123A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6123910A (en) * | 1994-06-14 | 2000-09-26 | Hitachi, Ltd. | Method of predicting and controlling harmful oxide and apparatus therefor |
| US5723099A (en) * | 1996-05-17 | 1998-03-03 | Steinke; Richard A. | Method and apparatus for remediation of toxic flue gases |
| US5795549A (en) * | 1996-05-17 | 1998-08-18 | American Mobility Ltd. | Appraratus for remediation of toxic flue gases |
| WO2010084559A1 (en) * | 2009-01-23 | 2010-07-29 | 出光興産株式会社 | Combustion apparatus in which emission of n2o is controlled, and method for controlling emission of n2o |
| JP2010169334A (en) * | 2009-01-23 | 2010-08-05 | Idemitsu Kosan Co Ltd | Combustion device for suppressing n2o emission and method of suppressing n2o emission |
| US20110271886A1 (en) * | 2009-01-23 | 2011-11-10 | Idemitsu Kosan Co., Ltd. | Combustion apparatus in which emission of n2o is controlled, and method for controlling emission of n2o |
| CN102292596A (en) * | 2009-01-23 | 2011-12-21 | 出光兴产株式会社 | N2O-emission-suppressing combustion apparatus and N2O-emission suppression method |
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