JP2009286983A - Method and device for controlling coke oven collecting pipe pressure - Google Patents

Method and device for controlling coke oven collecting pipe pressure Download PDF

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JP2009286983A
JP2009286983A JP2008144271A JP2008144271A JP2009286983A JP 2009286983 A JP2009286983 A JP 2009286983A JP 2008144271 A JP2008144271 A JP 2008144271A JP 2008144271 A JP2008144271 A JP 2008144271A JP 2009286983 A JP2009286983 A JP 2009286983A
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pressure
pressure control
coke oven
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drymen
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JP5433984B2 (en
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Takeo Matsumiya
健郎 松宮
Shuichi Yamamoto
修一 山本
Teruo Maehara
輝男 前原
Takayuki Saito
孝行 斉藤
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JFE Steel Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for controlling coke oven collecting pipe pressure by which collecting pipe pressure can meet a gain change of a pressure control process caused by a secondary side pressure change of a pressure control valve and which meet the change of the gas flow rate during coal charge to be not instable. <P>SOLUTION: In the method for controlling the coke oven collecting pipe pressure, a PID setting value is altered so that a gain change of the pressure control process caused by a secondary side pressure change according to a secondary side pressure measurement value of the pressure control valve is canceled. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、コークス炉のドライメン圧力を制御するコークス炉ドライメン圧力制御方法および装置に関するものである。   The present invention relates to a coke oven dry mene pressure control method and apparatus for controlling the dry mene pressure of a coke oven.

従来のコークス炉ドライン圧力制御方法では、石炭装入時にドライメン内における圧力の大きな上昇を抑制しようとする技術が開示されている。例えば、特許文献１には、石炭装入作業に入る前においては、ドライメン内の圧力が急激に大きく上昇するのを押さえるために、ドライメン内の圧力を検知し、これを用いて目標圧力値との差を無くすために、ドライメンとサクションメインとの間の圧力調整弁の開度を修正するフィ−ドバック制御を行ない、そして、石炭装入作業に入ったら、ＰＩＣ制御装置へ送信し、予め設定した開度分加算してＰＩＣの制御ダンパ−（圧力調節弁を指す）に出力させるフィ−ドフォワ−ド制御を行なう（特許文献１の明細書第１欄、特許請求の範囲第１３〜２７行参照）ことを要旨とする技術が開示されている。そして、フィ−ドフォワ−ド制御(以下、ＦＦ制御とも略記する)時の圧力調節弁の開度とフィ−ドフォワ−ド制御の継続時間を予め設定して操業を行っている。
特開平６−９３２６７号公報 In the conventional coke oven drain pressure control method, a technique for suppressing a large increase in pressure in the dry menn at the time of charging coal is disclosed. For example, in Patent Document 1, before entering the coal charging operation, in order to prevent the pressure in the dry men from rapidly increasing greatly, the pressure in the dry men is detected, and this is used as the target pressure value. In order to eliminate the difference, feedback control is performed to correct the opening of the pressure regulating valve between the dry men and the suction main. When the coal charging operation is started, it is sent to the PIC controller and set in advance. The feedforward control is performed so that the opening amount is added and output to the control damper (pointing to the pressure control valve) of the PIC (the first column of the specification of Patent Document 1, the lines of claims 13 to 27) (See reference). The operation is performed by setting in advance the opening of the pressure control valve and the duration of the feedforward control during feedforward control (hereinafter also abbreviated as FF control).
JP-A-6-93267

しかしながら、上述の従来技術では、圧力調節弁の1次側の圧力変動要素しか考慮しておらず、圧力調節弁の2次側であるブロワー及びガス精製設備の影響を考慮していないため、精製設備の集塵装置の詰まり等によるサクションメインにかかる吸引力の変動が引き起こす圧力制御プロセスのゲイン変化に対応できないという問題点がある。   However, the above-described conventional technology considers only the pressure fluctuation factor on the primary side of the pressure control valve, and does not consider the influence of the blower and gas purification equipment on the secondary side of the pressure control valve. There is a problem that it cannot cope with the gain change of the pressure control process caused by the fluctuation of the suction force applied to the suction main due to the clogging of the dust collector of the equipment.

また、フィ−ドフォワ−ド制御(以下、ＦＦ制御とも略記する)時の圧力調節弁の開度とフィ−ドフォワ−ド制御の継続時間を予め設定しているため、装炭量変化等の操業変化および設備劣化等の影響による装炭時のガス流量変化に対応できずドライン圧力が不安定になるという問題もある。   In addition, since the opening of the pressure control valve and the duration of the feedforward control during feedforward control (hereinafter also abbreviated as FF control) are set in advance, operations such as changes in the amount of coal charge, etc. There is also a problem that the drain pressure becomes unstable because it cannot cope with the gas flow rate change during coal loading due to the change and the deterioration of equipment.

以下に、従来技術の課題を詳述する。図８は、従来のドライメン圧力制御装置を説明する図である。図中、１はコークス炉、２はドライメン(集合管)、３は放散管、４は導圧管、５は圧力発信器、６は圧力調節弁、７は油圧装置、８は輸送管、９はＰＩ調節計、および１０は制御装置をそれぞれ示す。   Below, the problems of the prior art will be described in detail. FIG. 8 is a diagram illustrating a conventional dry men pressure control device. In the figure, 1 is a coke oven, 2 is a dry men (collecting pipe), 3 is a diffusion pipe, 4 is a pressure guiding pipe, 5 is a pressure transmitter, 6 is a pressure control valve, 7 is a hydraulic device, 8 is a transport pipe, 9 is PI controllers and 10 respectively indicate control devices.

コークス炉１に複数ある炭化室（図示せず）から発生したＣガスをドライメン(集合管)２で集めて、圧力発信器５および２次側の輸送管８を経由して、ガス精製設備（図示せず）へブロワーで吸気している。ドライメン２内のＣガス圧力を導圧管４で導いて圧力発信器５で測定し、測定した現在値(ＰＶ値)を制御装置１０中のＰＩ調節計９に送信し、ＰＶ値にもとづいた制御信号を油圧装置７(例えば油圧シリンダ)に送り圧力調節弁の開閉を調節することによってドライメン圧力を制御する。   C gas generated from a plurality of carbonization chambers (not shown) in the coke oven 1 is collected by a dry men (collecting pipe) 2 and then passed through a pressure transmitter 5 and a secondary-side transport pipe 8 for gas purification equipment ( (Not shown). The C gas pressure in the dry men 2 is guided by the pressure guiding tube 4 and measured by the pressure transmitter 5, and the measured current value (PV value) is transmitted to the PI controller 9 in the control device 10 to control based on the PV value. A signal is sent to the hydraulic device 7 (for example, a hydraulic cylinder) to control the opening and closing of the pressure control valve, thereby controlling the dry pressure.

図４は、2次側圧力変化によるプロセスのゲイン変化を示す図である。2次側圧力が-144mmH2O、-225mmH2Oの場合に、弁開度を各々46%、41%から1%減少させたステップ応答を示している。2次側圧力が-144mmH2Oの場合のゲインは16、-225mmH2Oの場合のゲインは26と、2次側圧力の変化によりプロセスのゲインが変化している。これは、2次側圧力の変化により、常用弁開度が低下して圧力調節弁の容量を示すCV値が減少するために発生するプロセスゲイン変化である。しかしながら、従来の技術では、圧力調節弁の2次側圧力を考慮していないため、このような圧力制御プロセスのゲイン変化に対応できない。 FIG. 4 is a diagram illustrating a process gain change due to a secondary pressure change. 2 outlet pressure -144MmH 2 O, in the case of -225MmH 2 O, shows a step response with a reduced 1% valve opening respectively 46%, from 41%. When the secondary pressure is -144 mmH 2 O, the gain is 16, and when the secondary pressure is -225 mmH 2 O, the gain is 26. The process gain changes due to the change in the secondary pressure. This is a process gain change that occurs because the CV value that indicates the capacity of the pressure control valve decreases due to a decrease in the normal valve opening due to a change in the secondary pressure. However, since the conventional technology does not consider the secondary pressure of the pressure control valve, it cannot cope with such a gain change of the pressure control process.

また、図５は、2次側圧力変化に対する安定性を検討した一例を示す図である。ボード線図による安定判別の一例であり、制御対象は非線形であるため、発生ガス流量が6.43Nm3/sの時に2次側圧力-144mmH2O(通常時)、-225mmH2Oの付近で線形近似して、従来技術における安定性を評価したものである。 FIG. 5 is a diagram showing an example in which the stability with respect to the secondary pressure change is examined. This is an example of stability determination based on the Bode diagram. Since the controlled object is non-linear, when the generated gas flow rate is 6.43 Nm 3 / s, the secondary pressure is around -144 mmH 2 O (normal) and -225 mmH 2 O. This is a linear approximation to evaluate the stability in the prior art.

図に示すように、2次側圧力が-144mmH2Oの場合の位相余裕は21°で安定であるのに対して、2次側圧力が-225mmH2Oの場合の位相余裕は-5°で不安定となる。このように、PI調節計のPID設定値をある状態で最適にチューニングしたとして固定したままでいると、2次側圧力変化によっては制御系が不安定な状態に陥ってしまう危険性がある。 As shown in the figure, when the secondary pressure is -144mmH 2 O, the phase margin is stable at 21 °, whereas when the secondary pressure is -225mmH 2 O, the phase margin is -5 °. Becomes unstable. As described above, if the PID setting value of the PI controller is fixed as it is optimally tuned in a certain state, there is a risk that the control system will be in an unstable state depending on the secondary pressure change.

本発明では、これら従来技術の問題点に鑑み、圧力調節弁の2次側圧力変化が引き起こす圧力制御プロセスのゲイン変化に対応でき、また、装炭時のガス流量変化に対応しドライメン圧力が不安定にならない、コークス炉ドライメン圧力制御方法および装置を提供することを課題とする。   In view of these problems in the prior art, the present invention can cope with a gain change in the pressure control process caused by a change in the secondary pressure of the pressure regulating valve, and can also cope with a change in the gas flow rate during coal loading, and the dry mene pressure is low. It is an object of the present invention to provide a coke oven drymen pressure control method and apparatus that are not stable.

本発明の請求項１に係る発明は、コークス炉のドライメン圧力を制御するコークス炉ドライメン圧力制御方法であって、圧力調節弁の2次側圧力測定値に応じて該2次側圧力変化が引き起こす圧力制御プロセスのゲイン変化を打ち消すように、PID設定値を変更することを特徴とするコークス炉ドライメン圧力制御方法である。   The invention according to claim 1 of the present invention is a coke oven dry mene pressure control method for controlling the dry mene pressure of a coke oven, and the secondary side pressure change is caused according to the secondary side pressure measurement value of the pressure control valve. A coke oven drymen pressure control method, wherein a PID set value is changed so as to cancel a gain change of a pressure control process.

また、本発明の請求項２に係る発明は、請求項１に記載のコークス炉ドライメン圧力制御方法において、ドライメン圧力測定値からモデルに基づきドライメンガス発生流量を推定し、推定したガス発生流量に基づき弁開度理想軌道を求め、求めた弁開度理想軌道に基づき圧力調節弁を操作することを特徴とするコークス炉ドライメン圧力制御方法である。   Further, the invention according to claim 2 of the present invention is the coke oven drymen pressure control method according to claim 1, wherein the drymen gas generation flow rate is estimated based on the model from the drymen pressure measurement value, and the estimated gas generation flow rate is calculated. The coke oven drymen pressure control method is characterized in that an ideal valve opening trajectory is obtained based on the pressure regulating valve is operated based on the obtained ideal valve opening trajectory.

さらに、本発明の請求項３に係る発明は、コークス炉のドライメン圧力を制御するコークス炉ドライメン圧力制御装置であって、圧力調節弁の2次側圧力測定値に応じて該2次側圧力変化が引き起こす圧力制御プロセスのゲイン変化を打ち消すようにPID設定値を変更するゲインスケジューリング機能部を備えることを特徴とするコークス炉ドライメン圧力制御装置である。   Furthermore, the invention according to claim 3 of the present invention is a coke oven drymen pressure control device for controlling the drymen pressure of the coke oven, wherein the change in the secondary side pressure according to the secondary side pressure measurement value of the pressure control valve. Is a coke oven drymen pressure control device including a gain scheduling function unit that changes a PID set value so as to cancel a gain change of a pressure control process caused by.

本発明により、装炭量変化等の操業変化および設備劣化等の影響による装炭時のガス流量変化を自動的に検知してFF制御時の圧力調節弁の開度を修正することができ、同時に圧力調節弁の2次側であるブロワー及びガス精製設備の影響を考慮したゲインスケジューリングが実施できる。これにより、安定して圧力制御が可能となりコークス炉操業の安定化が実現できる。   According to the present invention, it is possible to automatically detect the gas flow rate change at the time of coal charging due to the operation change such as the change in the coal charge amount and the influence of equipment deterioration, etc. At the same time, gain scheduling considering the effects of the blower and gas purification equipment on the secondary side of the pressure control valve can be implemented. As a result, the pressure can be stably controlled, and the coke oven operation can be stabilized.

本発明を実施するための第１実施形態について、図と数式を参照して以下に説明を行う。   A first embodiment for carrying out the present invention will be described below with reference to the drawings and mathematical expressions.

本発明では、図１に示すように、2次側圧力を測定し、その２次側圧力の変化に対応して発生するプロセスゲイン変化を打ち消すように、２次側圧力の実績値に基づいてPID設定値を選択し変更するゲインスケジューリングを行う。制御装置では、圧力設定値とドライメン圧力の実績値との偏差を補償するＰＩＤ制御を行う際に、予めPID設定を複数パターン設定しておき、測定した2次側圧力を入力し、その２次側圧力に応じて複数パターンの中から最適なＰＩＤ設定を選択して、ＰＩＤ制御を行う。   In the present invention, as shown in FIG. 1, the secondary pressure is measured, and based on the actual value of the secondary pressure so as to cancel the process gain change that occurs in response to the change in the secondary pressure. Performs gain scheduling to select and change the PID set value. In the control device, when performing PID control to compensate for the deviation between the pressure setting value and the actual drymen pressure value, a plurality of PID settings are set in advance, the measured secondary pressure is input, and the secondary pressure is input. PID control is performed by selecting an optimum PID setting from a plurality of patterns according to the side pressure.

また図２は、本発明に係るドライメン圧力制御装置例を説明する図である。図中の符号は、１１の圧力発信器(２次側)を除き、図８と同様である。圧力調節弁の2次側の輸送管８に圧力発信器(２次側)１１を設置して、２次側圧力を測定し、制御装置１０中のＰＩ調節計９に測定値を出力する。ＰＩ調節計９においては、入力されたドライメン圧力の測定値ＰＶと２次側圧力を入力し、それらの値に基づいて、ＰＩＤ設定値を選択して、そのＰＩＤ設定により制御出力を出力する。なお、複数パターンのＰＩＤ設定が予め制御装置１０の記憶手段（図示せず）に記憶されている。   FIG. 2 is a diagram illustrating an example of a dry men pressure control apparatus according to the present invention. The reference numerals in the figure are the same as those in FIG. 8 except for 11 pressure transmitters (secondary side). A pressure transmitter (secondary side) 11 is installed in the transport pipe 8 on the secondary side of the pressure control valve, the secondary side pressure is measured, and the measured value is output to the PI controller 9 in the control device 10. In the PI controller 9, the measured dry PV pressure value PV and the secondary pressure are input, a PID set value is selected based on these values, and a control output is output according to the PID setting. A plurality of patterns of PID settings are stored in advance in storage means (not shown) of the control device 10.

なお図３は、本発明の具体的なブロック線図の例を示す図である。ゲインスケジューリング機能部の一例として、2次側圧力に応じて切替スイッチにより、例えば３つのPID設定値を切り替える場合を示している。   FIG. 3 is a diagram showing an example of a specific block diagram of the present invention. As an example of the gain scheduling function unit, for example, a case where three PID set values are switched by a switch according to the secondary side pressure is shown.

このように、ゲインスケジューリングを導入することにより、圧力調節弁の2次側圧力変化が引き起こす圧力制御プロセスのゲイン変化に対応することが可能となる。   Thus, by introducing gain scheduling, it becomes possible to cope with the gain change of the pressure control process caused by the secondary pressure change of the pressure control valve.

次に、第１実施形態に加え、さらに、装炭時のドライメン圧力の不安定の抑制も行う第２実施形態について以下に説明する。なお、第２実施形態で第１実施形態に付加する部分を主に説明する。装炭のタイミングは予め分かっているので、このタイミングで発生ガス流量を測定し、測定した発生ガス流量による外乱影響を打ち消すようにFF制御すればよいが、ガスが発生し続けるため流量計の設置の困難性やガス中のタール付着による故障などの理由から、各炉団のガス流量測定は困難である。   Next, in addition to the first embodiment, a second embodiment that further suppresses the instability of drymen pressure during coal loading will be described below. In addition, the part added to 1st Embodiment in 2nd Embodiment is mainly demonstrated. Since the timing of coal loading is known in advance, it is sufficient to measure the generated gas flow rate at this timing and perform FF control so as to cancel the influence of disturbance due to the measured generated gas flow rate. It is difficult to measure the gas flow rate of each furnace group because of the difficulty of the above and failure due to tar adhesion in the gas.

そこで、発明者らは、モデル式から装炭時のガス発生流量を推定し、この推定したガス発生量に基づき弁開度理想軌道を求め、この弁開度理想軌道に基づき圧力調節弁を操作するとともに、更に圧力の偏差分をPID制御で補償するようにした。本発明における弁開度理想軌道とは、推定したガス発生流量に対して、ドライメン圧力変動を０にする弁開度の時間変化をいう。   Therefore, the inventors estimated the gas generation flow rate during coal loading from the model equation, obtained the valve opening ideal trajectory based on the estimated gas generation amount, and operated the pressure control valve based on the valve opening ideal trajectory. In addition, the pressure deviation was compensated by PID control. The valve opening ideal trajectory in the present invention refers to a change over time in the valve opening at which drymen pressure fluctuation is zero with respect to the estimated gas generation flow rate.

図６は、第２実施形態で第１実施形態に付加する部分におけるモデル化を説明する図である。図６(ａ)は、プロセスを模式的に示す図であり、図６(ｂ)は、以下に示す（１）式によるモデル式を伝達関数の形で示すブロック線図である。   FIG. 6 is a diagram for explaining modeling in a portion added to the first embodiment in the second embodiment. FIG. 6A is a diagram schematically showing the process, and FIG. 6B is a block diagram showing a model equation according to the following equation (1) in the form of a transfer function.

Figure 2009286983
Figure 2009286983

なお、（１）式におけるαおよびＣｖなどのパラメータは、同定および弁製作特性より入手などにより求めるようにすればよい。（１）式におけるαのパラメータ決定方法を記す。   In addition, what is necessary is just to obtain | require parameters, such as (alpha) and Cv in (1) Formula, by acquisition etc. from an identification and valve manufacture characteristic. The parameter determination method for α in the equation (1) will be described.

例えば、装炭10分後のガス発生量が安定した状態でステップ応答（例えば、弁開度を46% から45%に変更）での圧力（P0(実炉)）を測定し、以下の（２）式に示すP0(実炉)とP0(モデル)との２乗偏差の所定時間の和を表す、評価値Ｈが最小になるようなαを探索することによってαを決定すればよい。 For example, measure the pressure (P 0 (actual furnace)) with a step response (for example, change the valve opening from 46% to 45%) in a state where the gas generation amount after 10 minutes of coal charging is stable. Α is determined by searching for α that minimizes the evaluation value H, which represents the sum of squared deviations of P 0 (actual furnace) and P 0 (model) shown in equation (2). That's fine.

Figure 2009286983
Figure 2009286983

なお、発生ガス流量F0については、コークス炉全炉のガス発生流量に、全炉装炭量に対する対象とした炉団の装炭量の割合を乗じて求めればよい。 The generated gas flow rate F 0 may be obtained by multiplying the gas generation flow rate of the coke oven whole furnace by the ratio of the coal amount of the target furnace group to the total furnace coal amount.

図７は、第２実施形態の実施例を示すブロック線図を示す図である。圧力調節弁の2次側圧力値を制御装置に送信し、2次側圧力値の変動によるドライメン圧力制御系のプロセスゲインの変化を打消すようにPID制御のゲインを変更するとともに、ドライメン圧力測定値と２次側圧力測定値とからモデルに基づきドライメンガス発生流量を推定し、推定したガス発生流量をフィードフォワード制御モデルに入力して、外乱影響を打ち消すような弁開度理想軌道を求め、求めた弁開度理想軌道に基づき圧力調節弁を操作する。なお、この部分の演算は図２の制御装置１０内部または別途設けた外部演算装置のいずれかで行えばよい。   FIG. 7 is a block diagram showing an example of the second embodiment. Sends the secondary pressure value of the pressure control valve to the control device, changes the PID control gain so as to cancel the change in the process gain of the dry men pressure control system due to fluctuations in the secondary pressure value, and measures dry men pressure Estimate the dry gas generation flow rate based on the model from the measured value and the secondary pressure measurement value, and input the estimated gas generation flow rate to the feedforward control model to find the ideal valve opening trajectory that cancels the influence of disturbance Then, the pressure control valve is operated based on the obtained ideal valve opening degree trajectory. Note that the calculation of this part may be performed either in the control device 10 of FIG. 2 or in an external calculation device provided separately.

また、図中の外乱伝達関数Gd(s)、制御対象伝達関数Gp(s)、およびＦＦ制御伝達関数Gf(s)は、以下の（３）式で表される。   Also, the disturbance transfer function Gd (s), the controlled object transfer function Gp (s), and the FF control transfer function Gf (s) in the figure are expressed by the following equation (3).

Figure 2009286983
Figure 2009286983

これにより、圧力調節弁の2次側圧力変化ならびに装炭時のガス流量変化にも対応することができる。なお、装炭時FF制御時のPID設定値についても、2次側圧力値の変動と同様にゲインスケジューリングによって選択されたPID設定値によってPID制御による弁開度を決定するようにしてもよい。   Thereby, it is possible to cope with a change in the secondary pressure of the pressure control valve and a change in the gas flow rate during coal loading. As for the PID set value at the time of coal FF control, the valve opening degree by PID control may be determined by the PID set value selected by gain scheduling in the same manner as the change in the secondary pressure value.

本発明に係るコークス炉ドライメン圧力制御方法の一ブロック線図を示す図である。It is a figure which shows one block diagram of the coke oven dry men pressure control method which concerns on this invention. 本発明に係るドライメン圧力制御装置例を説明する図である。It is a figure explaining the example of a dry men pressure control device concerning the present invention. 本発明の具体的なブロック線図の例を示す図である。It is a figure which shows the example of the specific block diagram of this invention. 2次側圧力変化によるプロセスのゲイン変化を示す図である。It is a figure which shows the gain change of the process by a secondary side pressure change. 2次側圧力変化に対する安定性を検討した一例を示す図である。It is a figure which shows an example which examined the stability with respect to a secondary side pressure change. 第２実施形態で第１実施形態に付加する部分におけるモデル化を説明する図である。It is a figure explaining modeling in the part added to 1st Embodiment in 2nd Embodiment. 第２実施形態の実施例を示すブロック線図を示す図である。It is a figure which shows the block diagram which shows the Example of 2nd Embodiment. 従来のドライメン圧力制御装置を説明する図である。It is a figure explaining the conventional dry men pressure control apparatus.

符号の説明Explanation of symbols

１ コークス炉
２ ドライメン(集合管)
３ 放散管
４ 導圧管
５ 圧力発信器
６ 圧力調節弁
７ 油圧装置
８ 輸送管
９ ＰＩ調節計
１０ 制御装置
１１ 圧力発信器(２次側) 1 Coke oven 2 Dry men (collecting pipe)
DESCRIPTION OF SYMBOLS 3 Dissipation pipe 4 Pressure guiding pipe 5 Pressure transmitter 6 Pressure control valve 7 Hydraulic device 8 Transport pipe 9 PI controller 10 Control apparatus 11 Pressure transmitter (secondary side)

Claims (3)

コークス炉のドライメン圧力を制御するコークス炉ドライメン圧力制御方法であって、
圧力調節弁の2次側圧力測定値に応じて該2次側圧力変化が引き起こす圧力制御プロセスのゲイン変化を打ち消すように、PID設定値を変更することを特徴とするコークス炉ドライメン圧力制御方法。 A coke oven drymen pressure control method for controlling the drymen pressure of a coke oven,
A coke oven drymen pressure control method, wherein a PID set value is changed so as to cancel a gain change in a pressure control process caused by the change in the secondary pressure according to a measured value of the secondary pressure of the pressure control valve. 請求項１に記載のコークス炉ドライメン圧力制御方法において、
ドライメン圧力測定値からモデルに基づきドライメンガス発生流量を推定し、推定したガス発生流量に基づき弁開度理想軌道を求め、求めた弁開度理想軌道に基づき圧力調節弁を操作することを特徴とするコークス炉ドライメン圧力制御方法。 In the coke oven dry men pressure control method according to claim 1,
Estimates dry mens gas generation flow rate from dry mene pressure measurement value based on model, calculates valve opening ideal trajectory based on estimated gas generation flow rate, and operates pressure control valve based on calculated valve opening ideal trajectory Coke oven drymen pressure control method. コークス炉のドライメン圧力を制御するコークス炉ドライメン圧力制御装置であって、
圧力調節弁の2次側圧力測定値に応じて該2次側圧力変化が引き起こす圧力制御プロセスのゲイン変化を打ち消すようにPID設定値を変更するゲインスケジューリング機能部を備えることを特徴とするコークス炉ドライメン圧力制御装置。 A coke oven drymen pressure control device for controlling the drymen pressure of a coke oven,
A coke oven comprising a gain scheduling function unit that changes a PID set value so as to cancel a gain change of a pressure control process caused by the secondary pressure change according to a secondary pressure measurement value of a pressure control valve Drymen pressure control device.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102354113A (en) * 2011-07-30 2012-02-15 山西太钢不锈钢股份有限公司 Fuzzy hybrid control method for collecting main pressure systems of multiple coke ovens
CN104498058A (en) * 2014-12-31 2015-04-08 太原重工股份有限公司 Pressure balance control method for coke oven gas collector
JP2016098282A (en) * 2014-11-20 2016-05-30 Ｊｆｅスチール株式会社 Coke oven gas recovery method and recovery apparatus
CN114183692A (en) * 2021-12-06 2022-03-15 武汉科技大学 Automatic control method for four butterfly valves in gas mixing system

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Publication number Priority date Publication date Assignee Title
JPH09310072A (en) * 1996-05-22 1997-12-02 Sumitomo Metal Ind Ltd Control of internal pressure of coke oven
JPH11349955A (en) * 1998-06-11 1999-12-21 Kawasaki Steel Corp Pressure control method and device for carbonizing chamber of coke oven
JP2006124508A (en) * 2004-10-28 2006-05-18 Jfe Steel Kk Releae valve for coke oven
JP2007045929A (en) * 2005-08-10 2007-02-22 Nippon Steel Corp Method for start-up of coke oven

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09310072A (en) * 1996-05-22 1997-12-02 Sumitomo Metal Ind Ltd Control of internal pressure of coke oven
JPH11349955A (en) * 1998-06-11 1999-12-21 Kawasaki Steel Corp Pressure control method and device for carbonizing chamber of coke oven
JP2006124508A (en) * 2004-10-28 2006-05-18 Jfe Steel Kk Releae valve for coke oven
JP2007045929A (en) * 2005-08-10 2007-02-22 Nippon Steel Corp Method for start-up of coke oven

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102354113A (en) * 2011-07-30 2012-02-15 山西太钢不锈钢股份有限公司 Fuzzy hybrid control method for collecting main pressure systems of multiple coke ovens
JP2016098282A (en) * 2014-11-20 2016-05-30 Ｊｆｅスチール株式会社 Coke oven gas recovery method and recovery apparatus
CN104498058A (en) * 2014-12-31 2015-04-08 太原重工股份有限公司 Pressure balance control method for coke oven gas collector
CN114183692A (en) * 2021-12-06 2022-03-15 武汉科技大学 Automatic control method for four butterfly valves in gas mixing system

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