JPH05189062A - Reboiler temperature control method for rectification tower - Google Patents
Reboiler temperature control method for rectification towerInfo
- Publication number
- JPH05189062A JPH05189062A JP2319592A JP2319592A JPH05189062A JP H05189062 A JPH05189062 A JP H05189062A JP 2319592 A JP2319592 A JP 2319592A JP 2319592 A JP2319592 A JP 2319592A JP H05189062 A JPH05189062 A JP H05189062A
- Authority
- JP
- Japan
- Prior art keywords
- reboiler
- temperature
- flow rate
- reflux
- rectification tower
- 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.)
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Flow Control (AREA)
- Control Of Temperature (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、精留塔等（本明細書で
は、精留塔及び蒸留塔を総称して精留塔等という。）に
供給する原料油種切替え時におけるリボイラ温度の制御
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reboiler temperature at the time of switching a feed oil type to be supplied to a rectification tower or the like (in the present specification, the rectification tower and the distillation tower are generically called rectification tower etc.). Control method
【０００２】[0002]
【従来の技術】精留塔、例えば灯軽油脱硫用の精留塔に
おいて原料油種を切り替えると、精留塔受槽レベル及び
リボイラ温度が大幅に変化する。このため、リフラック
ス量，スロップ量及びリボイラの燃料量を制御する必要
がある。例えば、図６に示す精留塔系において、精留塔
１に供給する原料がＫＥＲＯ（未洗灯油）からＬＧＯ
（未洗軽油）に変わると、リボイラ３の温度が低いため
受槽２のレベルが急激に低くなる。このような場合、従
来は、熟練運転員が、受槽２のレベル計１１と精留塔１
の塔頂温度計１２を見ながらリフラックス量調節弁２１
（及び必要に応じスロップ量調節弁２２）の調節を行な
ってリフラックス流量を制御し、さらにリフラックス流
量計１３を見ながらリボイラ３の燃料調節弁２３を調節
してリボイラ温度の制御を行なっていた。なお、図６に
おいて、１４はリボイラ温度計である。2. Description of the Related Art When a feed oil type is changed in a rectification column, for example, a rectification column for desulfurization of kerosene and light oil, the rectification column receiving tank level and the reboiler temperature are greatly changed. Therefore, it is necessary to control the amount of reflux, the amount of slop, and the amount of fuel in the reboiler. For example, in the rectification tower system shown in FIG. 6, the raw material supplied to the rectification tower 1 is KERO (unwashed kerosene) to LGO.
When it is changed to (unwashed light oil), the temperature of the reboiler 3 is low, and the level of the receiving tank 2 is rapidly lowered. In such a case, conventionally, a skilled operator has used the level gauge 11 of the receiving tank 2 and the rectification tower 1
Reflux amount control valve 21 while watching the overhead thermometer 12
(And the slop amount adjusting valve 22 as necessary) is adjusted to control the reflux flow rate, and while watching the reflux flow meter 13, the fuel adjusting valve 23 of the reboiler 3 is adjusted to control the reboiler temperature. It was In FIG. 6, 14 is a reboiler thermometer.
【０００３】[0003]
【発明が解決しようとする課題】上述のように、従来
は、精留塔に供給する原料の油種切替え時には、熟練運
転員が長年の経験にもとづく勘にたよりながら、手動で
リフラックス量を制御し、かつリボイラ温度の制御を行
なっていた。このため、運転員に多大の労力がかかると
ともに、人為的な制御ミスを避けることができず、スロ
ップ量が必要以上に多くなってしまうという問題があっ
た。このような問題は、蒸留塔において原料油種（例え
ば原油）を切り替えるときにも生じていた。As described above, conventionally, when switching the oil type of the raw material to be supplied to the rectification column, the amount of the reflux is manually adjusted by a skilled operator based on the intuition based on many years of experience. In addition, the reboiler temperature was controlled. For this reason, there is a problem that a great amount of labor is required for the operator, an artificial control error cannot be avoided, and the slop amount becomes unnecessarily large. Such a problem also occurs when the feedstock type (for example, crude oil) is switched in the distillation column.
【０００４】本発明は、上記問題点にかんがみてなされ
たものであり、原料油種切替え時のリボイラ温度の制御
を自動的に行なえるようにして、省力化を図るとともに
スロップ量を最小化し、これによって、製品性状の安定
化を図った精留塔等の制御方法の提供を目的とする。The present invention has been made in view of the above problems, and it is possible to automatically control the reboiler temperature at the time of switching the feedstock type to save labor and minimize the slop amount. The purpose of this is to provide a method for controlling a rectification tower or the like, which stabilizes the product properties.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
本発明の精留塔等のリボイラ温度制御方法は、原料油種
切替え時における精留塔等の塔頂温度変化と、精留塔等
の受槽レベルの検出データにもとづいてリフラックス量
調節弁の開度調整を行ない、この開度調整によって変化
したリフラックス流量を検出し、かつ、このリフラック
ス流量の変化分に相当する温度を求め、一方、原料油種
切替え時におけるリボイラ温度の時間的推移を統計的に
処理して基準データにまとめ、この基準データから仮の
次期リボイラ設定温度を求め、次いで、この仮の次期リ
ボイラ設定温度をリフラックス流量の変化分に相当する
温度によって補正して次期リボイラ設定温度を求め、リ
ボイラ温度を上記リボイラ設定温度となるように制御す
るようにしてある。[Means for Solving the Problems] To achieve the above object
The reboiler temperature control method for the rectification column etc. of the present invention is
Changes in the top temperature of the rectification tower during switching, and the rectification tower, etc.
Reflux amount based on the detection data of the receiving tank level
Adjust the opening of the control valve and change according to this opening adjustment
The flow rate of the generated reflux is detected, and
The temperature corresponding to the change in flow rate
Statistically the transition of reboiler temperature during switching
It is processed and summarized into reference data, and from this reference data
Calculate the next reboiler set temperature, and then
The boiler set temperature corresponds to the change in the reflux flow rate
Calculate the next reboiler set temperature by correcting the temperature and
Control the boiler temperature to the above reboiler set temperature.
I am doing it.
【０００６】[0006]
【実施例】以下、本発明方法の一実施例について説明す
る。図１は本実施例方法を精留塔のリボイラ温度制御に
実施するための制御系ブロック構成図を示す。同図にお
いて、精留塔１，精留塔受槽２，リボイラ３，受槽レベ
ル計１１，塔頂温度計１２，リフラックス流量計１３，
リボイラ温度計１４，リフラックス量調節弁２１，スロ
ップ量調節弁２２及び燃料調節弁２３は、図６に示す従
来のものと同じである。EXAMPLE An example of the method of the present invention will be described below. FIG. 1 shows a block diagram of a control system for carrying out the method of this embodiment for controlling the reboiler temperature of a rectification column. In the figure, a rectification tower 1, a rectification tower receiving tank 2, a reboiler 3, a receiving tank level meter 11, a tower top thermometer 12, a reflux flow meter 13,
The reboiler thermometer 14, the reflux amount control valve 21, the slop amount control valve 22 and the fuel control valve 23 are the same as the conventional ones shown in FIG.
【０００７】また、同図において、３１はリフラックス
量・スロップ量制御手段であり、塔頂温度計１２と受槽
レベル計１３からの検出信号にもとづいてリフラックス
量調節弁２１とスロップ量調節弁２８の開度を調節す
る。３２はリフラックス流量（変化量）を温度に変換す
るリフラックス流量−温度変換手段であり、リフラック
ス流量計１３からの検出値にもとづいてリフラックス流
量の変化を求め、この変化分に対応する温度を求める。Further, in the figure, 31 is a reflux amount / slop amount control means, which controls the reflux amount control valve 21 and the slop amount control valve based on the detection signals from the tower top temperature meter 12 and the receiving tank level meter 13. Adjust the opening of 28. Reference numeral 32 is a reflux flow rate-temperature conversion means for converting the reflux flow rate (change amount) into temperature. The change in the reflux flow rate is obtained based on the detected value from the reflux flow meter 13, and the change amount is dealt with. Find the temperature.
【０００８】３３は基準データ算出手段であり、熟練運
転員の操作方法、すなわち原料油種切替え時の熟練運転
員のリボイラ温度調整法を統計的に処理して制御の基準
値を算出（モデル化）する。換言すれば、過去の原料油
種切替え時のリボイラ温度の時間的推移を統計的に処理
して数式化し、基準モデルとする。３４は仮の次期リボ
イラ温度推定手段であり、基準データ算出手段３３で求
めた基準値（データ）から、仮の次期（ｔ2 ：ｔ1 から
Δｔ時間後）リボイラ温度Ｔ2 を推定する。３５は仮の
次期リボイラ温度設定手段であり、次期リボイラ温度推
定手段３４で推定した仮の次期リボイラ推定温度を、リ
ボイラ温度計１４で検出した実際のリボイラ温度で補正
し、仮の次期リボイラ設定温度を求める。Reference numeral 33 is a reference data calculating means, which statistically processes the operating method of the skilled operator, that is, the method of adjusting the reboiler temperature of the skilled operator when the feedstock type is changed, to calculate the reference value of control (modeling). ) Do. In other words, the time course of the reboiler temperature at the time of switching the feedstock type in the past is statistically processed to be mathematically expressed as a reference model. Reference numeral 34 denotes a provisional next-stage reboiler temperature estimating means, which estimates a provisional next-stage (after Δt time from t 2 : t 1 ) reboiler temperature T 2 from the reference value (data) obtained by the reference data calculating means 33. Reference numeral 35 denotes a temporary next reboiler temperature setting means, which corrects the temporary next reboiler estimated temperature estimated by the next reboiler temperature estimating means 34 with the actual reboiler temperature detected by the reboiler thermometer 14 to obtain a temporary next reboiler set temperature. Ask for.
【０００９】３６は次期リボイラ温度設定手段であり、
仮の次期リボイラ温度設定手段３５で求めた仮の次期リ
ボイラ設定温度を、リフラックス量−温度変換手段３２
で変換した温度で補正し、次期リボイラ温度の設定値を
求める。この次期リボイラ温度設定手段３６は、リボイ
ラ３の温度を設定温度に制御すべく燃料調節弁２３の開
度調整を行なう。Reference numeral 36 is a next reboiler temperature setting means,
The temporary next reboiler set temperature obtained by the temporary next reboiler temperature setting means 35 is used as the reflux amount-temperature conversion means 32.
Compensate with the temperature converted in step (3) to obtain the set value for the next reboiler temperature. The next reboiler temperature setting means 36 adjusts the opening degree of the fuel control valve 23 to control the temperature of the reboiler 3 to the set temperature.
【００１０】次に、上記各手段からなる制御系によって
行なう本発明の一実施例制御方法を、図２のフローチャ
ートにもとづいて説明する。精留塔１に供給する原料油
種の切替えに起因する精留塔１の塔頂温度変化と、受槽
２のレベルを検出し（２０１，２０２）受槽レベルを塔
頂温度変化で補正すべく両出力を加算する。そして、リ
フラックス流量と弁開度の関係図を作成し（図３参
照）、この関係図にもとづいてリフラックス量調節弁２
１とスロップ量調節弁２２の開度を求め、かつ両弁２
１，２２の開度の調節を行ないリフラックス流量とスロ
ップ流量を制御する。リフラックス量調節弁２１とスロ
ップ量調節弁２２の開度調節を行なうとリフラックス流
量が変化するので、このときのリフラックス流量の変化
を求める（２０４）。Next, a control method according to an embodiment of the present invention, which is performed by the control system including the above-mentioned means, will be described with reference to the flowchart of FIG. A change in the top temperature of the rectification column 1 caused by the change of the feedstock type to be supplied to the rectification column 1 and the level of the receiving tank 2 are detected (201, 202), and both levels should be corrected by the change in the top temperature. Add outputs. Then, a relationship diagram between the reflux flow rate and the valve opening degree is created (see FIG. 3), and based on this relationship diagram, the reflux amount control valve 2
1 and the opening degree of the slop amount control valve 22 are obtained, and both valves 2
The opening amounts of 1 and 22 are adjusted to control the reflux flow rate and the slop flow rate. When the opening of the reflux amount control valve 21 and the slop amount control valve 22 is adjusted, the reflux flow rate changes. Therefore, the change of the reflux flow rate at this time is obtained (204).
【００１１】検出したリフラックス流量の変化分に対応
する温度を予め求めた図４に示すリフラックス流量−温
度変化関係図にもとづいて求める（２０５）。例えば、
リフラックス流量が１００Ｋｌ／ｄだけ増加したとする
と、リボイラ温度はａ℃だけ低くする必要があるので、
このときのリフラックス流量＋１００Ｋｌ／ｄに相当す
る温度は−ａ℃となる。このようにして求め（変換し）
た温度は、後述するリボイラ設定温度の補正に用いる。The temperature corresponding to the detected variation in the reflux flow rate is determined in advance based on the reflux flow rate-temperature variation relationship diagram shown in FIG. 4 (205). For example,
If the reflux flow rate increases by 100 Kl / d, the reboiler temperature needs to be lowered by a ° C.
At this time, the temperature corresponding to the reflux flow rate +100 Kl / d is -a ° C. Obtained (converted) in this way
This temperature is used to correct the reboiler set temperature, which will be described later.
【００１２】一方、原料油種切替え時における熟練運転
員の操作方法（リボイラ温度の時間的推移）をニューラ
ルネットワークなどの手段によって統計的に処理し、こ
れをロジスティック関数で表現し、リボイラ温度制御の
基準値とする（２０６）。ここでは、油種の切替え開始
から終了まで一つの関数で表現する。 ロジスティック関数 ｙ（ｔ）＝Ｋ／（１＋ｅｘｐ（ａ）×ｅｘｐ（ｂ×
ｔ）） ｙ：リボイラ温度 Ｋ：終了予定温度 ｔ：時間（分） ａ，ｂ：定数 ａ，ｂの定数は処理量に応じチューニングによって最終
決定するが、ａ，ｂを変化させることによりロジスティ
ック関数法で求めたリボイラ温度曲線の形状（図５参
照）は変化する。すなわち、定数ａが増加すると形状は
右へ推移し、ｂが増加すると形状の傾きが大きくなる。
なお、チャージ流量，比熱，比重などにより、ａ，ｂの
定数は過去の実績から自動計算される。また、終了予定
温度Ｋも、チャージ流量，比熱，比重，及び実績などか
ら自動計算される。なお、基準データを求める手法とし
ては、上述したロジスティック関数法以外に、区間線形
法なども用いることができる。On the other hand, the operating method (temporal change of the reboiler temperature) of a skilled operator at the time of switching the feedstock type is statistically processed by means such as a neural network, and this is expressed by a logistic function to control the reboiler temperature. It is used as a reference value (206). Here, a single function is used from the start to the end of the oil type switching. Logistic function y (t) = K / (1 + exp (a) × exp (b ×
t)) y: reboiler temperature K: scheduled end temperature t: time (minutes) a, b: constants The constants a and b are finally determined by tuning according to the amount of processing, but by changing a and b, a logistic function is obtained. The shape of the reboiler temperature curve obtained by the method (see FIG. 5) changes. That is, the shape shifts to the right when the constant a increases, and the inclination of the shape increases when b increases.
Note that the constants a and b are automatically calculated from past results, depending on the charge flow rate, specific heat, specific gravity, and the like. In addition, the scheduled end temperature K is also automatically calculated from the charge flow rate, specific heat, specific gravity, and actual result. In addition to the above-mentioned logistic function method, a piecewise linear method or the like can be used as a method for obtaining the reference data.
【００１３】次いで、上記基準データから仮の次期リボ
イラ温度を推定する（２０７）。すなわち、現時点ｔ1
から制御インターバルΔｔ時間後における次期の制御時
点ｔ2 での温度Ｔ2 （Ｔ1 ＋ΔＴ）を、図５に示すよう
に上記基準データから推定する。次期制御時点ｔ2 にお
ける仮の次期リボイラ推定温度Ｔ2 を、実際に測定した
現時点のリボイラ温度Ｔ0 で補正する（２０８）。すな
わち、ΔＴ＋Ｔ0 のようにして補正し、仮の次期リボイ
ラ温度Ｔ3 を設定する。このようにして設定した仮の次
期リボイラ温度Ｔ3 を、上述したリフラックス流量の変
化分に相当する温度だけ補正し、最終的な次期リボイラ
温度を設定する（２０９）。このように、仮の次期リボ
イラ温度をリフラックス流量の変化分に相当する温度だ
け補正するのは、リフラックス流量の変化により受槽レ
ベルが変化することを防止するためである。Next, a temporary next reboiler temperature is estimated from the reference data (207). That is, the present time t 1
From the above, the temperature T 2 (T 1 + ΔT) at the next control time point t 2 after the control interval Δt time is estimated from the reference data as shown in FIG. The temporary next reboiler estimated temperature T 2 at the next control time t 2 is corrected by the actually measured current reboiler temperature T 0 (208). That is, the correction is made as ΔT + T 0 , and the temporary next reboiler temperature T 3 is set. The temporary next reboiler temperature T 3 set in this way is corrected by the temperature corresponding to the change in the reflux flow rate described above, and the final next reboiler temperature is set (209). In this manner, the provisional next reboiler temperature is corrected by the temperature corresponding to the change in the reflux flow rate in order to prevent the receiving tank level from changing due to the change in the reflux flow rate.
【００１４】なお、基準データから仮の次期リボイラ温
度を推定し、かつこの仮の次期リボイラ推定温度を実際
のリボイラ温度で補正することなく、直接仮の次期リボ
イラ設定温度Ｔ3 （＝Ｔ2 ）を予測することができる場
合は、仮の次期リボイラ温度推定工程（手段３４）と、
実際のリボイラ温度による補正工程を省略することがで
きる。The provisional next reboiler temperature is estimated from the reference data, and the provisional next reboiler set temperature T 3 (= T 2 ) is directly corrected without correcting the provisional next reboiler estimated temperature with the actual reboiler temperature. If it can be predicted that the next reboiler temperature estimation step (means 34),
The correction process based on the actual reboiler temperature can be omitted.
【００１５】このようにして次期リボイラ設定温度を求
め、リボイラが設定したリボイラ温度となるように、リ
ボイラ３への燃料供給量を燃料調節弁２３で制御する。In this way, the next reboiler set temperature is obtained, and the fuel supply amount to the reboiler 3 is controlled by the fuel control valve 23 so that the reboiler temperature becomes the set reboiler temperature.
【００１６】本発明は上記実施例に限定されるものでは
なく、ＬＧＯからＫＥＲＯへの油種切替え時にも適用で
き、この場合は基準データにおけるリボイラ温度曲線の
形状が、時間の経過にともない下降する形状となる。The present invention is not limited to the above-mentioned embodiment, but can be applied when switching the oil type from LGO to KERO. In this case, the shape of the reboiler temperature curve in the reference data drops with the passage of time. It becomes a shape.
【００１７】[0017]
【発明の効果】以上のように本発明によれば、精留塔等
の原料油種切替え時のリボイラ温度の制御を自動化でき
るので、制御の省力化と、運転ミスによる製品のスロッ
プダウンを防止し、受槽から引き出されるスロップ量の
最小化を図ることができる。As described above, according to the present invention, the control of the reboiler temperature at the time of switching the feedstock oil type in the rectification tower or the like can be automated, so that the labor saving of the control and the slop down of the product due to the operation mistake can be prevented. However, the amount of slop drawn from the receiving tank can be minimized.
【図１】本発明の一実施例方法を実施するための制御系
ブロック構成図。FIG. 1 is a block diagram of a control system for carrying out a method according to an embodiment of the present invention.
【図２】本発明の一実施例方法を説明するためのフロー
チャート。FIG. 2 is a flowchart for explaining a method according to an embodiment of the present invention.
【図３】受槽レベルと塔頂温度変化からリフラックス量
調節弁とスロップ量調節弁の開度を求める特性図。FIG. 3 is a characteristic diagram for obtaining the opening of the reflux amount control valve and the slop amount control valve from the receiving tank level and the tower top temperature change.
【図４】リフラックス流量変化量−温度変換関係図。FIG. 4 is a relationship diagram of a change rate of reflux flow rate-temperature conversion.
【図５】ロジスティック関数法で求めた原料油種切替え
時のリボイラ温度推移を示すリボイラ温度曲線図。FIG. 5 is a reboiler temperature curve diagram showing a change in reboiler temperature at the time of switching a feedstock oil type obtained by a logistic function method.
【図６】従来の精留塔の制御系を示すブロック構成図。FIG. 6 is a block diagram showing a control system of a conventional rectification tower.
１…精留塔 ２…受槽 ３…リボイラ １１…受槽レベル計 １２…塔頂温度計 １３…リフラックス流量計 １４…リボイラ温度計 ２１…リフラックス量調節弁 ２２…スロップ量調節弁 ２３…燃料調節弁 ３１…リフラックス量・スロップ量制御手段 ３２…リフラッス量−温度変換手段 ３３…基準データ算出手段 ３４…仮の次期リボイラ温度推定手段 ３５…仮の次期リボイラ温度設定手段 ３６…次期リボイラ温度設定手段 DESCRIPTION OF SYMBOLS 1 ... Fractionation tower 2 ... Receiving tank 3 ... Reboiler 11 ... Receiving tank level meter 12 ... Tower thermometer 13 ... Reflux flowmeter 14 ... Reboiler thermometer 21 ... Reflux amount control valve 22 ... Slop amount control valve 23 ... Fuel control Valve 31 ... Reflux amount / slop amount control means 32 ... Reflux amount-temperature conversion means 33 ... Reference data calculation means 34 ... Temporary next reboiler temperature estimation means 35 ... Temporary next reboiler temperature setting means 36 ... Next reboiler temperature setting means
Claims (2)
頂温度変化と、精留塔等の受槽レベルの検出データにも
とづいてリフラックス量調節弁の開度調節を行ない、 この開度調節によって変化したリフラックス流量を検出
し、かつ、このリフラックス流量の変化分に相当する温
度を求め、 一方、原料油種切替え時におけるリボイラ温度の時間的
推移を統計的に処理して基準データにまとめ、 この基準データから仮の次期リボイラ設定温度を求め、 次いで、この仮の次期リボイラ設定温度を、リフラック
ス流量の変化分に相当する温度によって補正して次期リ
ボイラ設定温度を求め、 リボイラ温度を上記次期リボイラ設定温度となるように
制御することを特徴とした精留塔等のリボイラ温度制御
方法。1. The opening of the reflux amount control valve is adjusted based on the change in the top temperature of the rectification tower and the like at the time of switching the feedstock type and the detection data of the receiving tank level of the rectification tower and the like. The reflux flow rate changed by the adjustment is detected, and the temperature corresponding to the change in the reflux flow rate is obtained. On the other hand, the time course of the reboiler temperature at the time of switching the feedstock type is statistically processed to obtain the reference data. The provisional next reboiler set temperature is obtained from this reference data, and the provisional next reboiler set temperature is then corrected by the temperature corresponding to the change in the reflux flow rate to obtain the next reboiler set temperature. Is controlled so that the next reboiler set temperature is reached, and a reboiler temperature control method for a rectification tower and the like.
頂温度変化と、精留塔等の受槽レベルの検出データにも
とづいてリフラックス量調節弁の開度調節を行ない、 この開度調節によって変化したリフラックス流量を検出
し、かつ、このリフラックス流量の変化分に相当する温
度を求め、 一方、原料油種切替え時におけるリボイラ温度の時間的
推移を統計的に処理して基準データにまとめ、 この基準データから仮の次期リボイラ推定温度を求め、 次いで、この仮の次期リボイラ推定温度を、実際のリボ
イラ温度で補正して仮の次期リボイラ設定温度を求め、 さらに、この仮の次期リボイラ設定温度を、リフラック
ス流量の変化分に相当する温度によって補正して次期リ
ボイラ設定温度を求め、 リボイラ温度を上記次期リボイラ設定温度となるように
制御することを特徴とした精留塔等のリボイラ温度制御
方法。2. The opening of the reflux amount control valve is adjusted based on the change in the temperature of the top of the rectification tower when switching the feedstock type and the detection data of the receiving tank level of the rectification tower. The reflux flow rate changed by the adjustment is detected, and the temperature corresponding to the change in the reflux flow rate is obtained. On the other hand, the time course of the reboiler temperature at the time of switching the feedstock type is statistically processed to obtain the reference data. The provisional next reboiler estimated temperature is obtained from this reference data, and then the provisional next reboiler estimated temperature is corrected by the actual reboiler temperature to obtain the provisional next reboiler set temperature. The reboiler set temperature is corrected by the temperature corresponding to the change in the reflux flow rate to obtain the next reboiler set temperature, and the reboiler temperature becomes the next reboiler set temperature. Method for controlling the reboiler temperature of a rectification tower, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2319592A JP2945199B2 (en) | 1992-01-13 | 1992-01-13 | Reboiler temperature control method for rectification tower, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2319592A JP2945199B2 (en) | 1992-01-13 | 1992-01-13 | Reboiler temperature control method for rectification tower, etc. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05189062A true JPH05189062A (en) | 1993-07-30 |
| JP2945199B2 JP2945199B2 (en) | 1999-09-06 |
Family
ID=12103890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2319592A Expired - Fee Related JP2945199B2 (en) | 1992-01-13 | 1992-01-13 | Reboiler temperature control method for rectification tower, etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2945199B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006187737A (en) * | 2005-01-07 | 2006-07-20 | Petroleum Energy Center | Method for establishing operation target value of various apparatuses at the time of raw material switching |
| CN106040676A (en) * | 2016-05-19 | 2016-10-26 | 北京世纪隆博科技有限责任公司 | Automatic washing method for rectifying tower pipeline |
| CN110647186A (en) * | 2019-10-25 | 2020-01-03 | 北京和隆优化科技股份有限公司 | Chloroethylene rectification temperature control method based on fuzzy neural network |
-
1992
- 1992-01-13 JP JP2319592A patent/JP2945199B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006187737A (en) * | 2005-01-07 | 2006-07-20 | Petroleum Energy Center | Method for establishing operation target value of various apparatuses at the time of raw material switching |
| CN106040676A (en) * | 2016-05-19 | 2016-10-26 | 北京世纪隆博科技有限责任公司 | Automatic washing method for rectifying tower pipeline |
| CN110647186A (en) * | 2019-10-25 | 2020-01-03 | 北京和隆优化科技股份有限公司 | Chloroethylene rectification temperature control method based on fuzzy neural network |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2945199B2 (en) | 1999-09-06 |
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