JPH07168B2 - Pressure control method for specific component gas - Google Patents

Pressure control method for specific component gas

Info

Publication number
JPH07168B2
JPH07168B2 JP63032882A JP3288288A JPH07168B2 JP H07168 B2 JPH07168 B2 JP H07168B2 JP 63032882 A JP63032882 A JP 63032882A JP 3288288 A JP3288288 A JP 3288288A JP H07168 B2 JPH07168 B2 JP H07168B2
Authority
JP
Japan
Prior art keywords
pressure
component gas
specific component
holder
valve
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.)
Expired - Lifetime
Application number
JP63032882A
Other languages
Japanese (ja)
Other versions
JPH01210012A (en
Inventor
吉昭 脇谷
Original Assignee
川崎製鉄株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 川崎製鉄株式会社 filed Critical 川崎製鉄株式会社
Priority to JP63032882A priority Critical patent/JPH07168B2/en
Publication of JPH01210012A publication Critical patent/JPH01210012A/en
Publication of JPH07168B2 publication Critical patent/JPH07168B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、多成分系の気体(以下原料ガスと称す)から
特定の成分気体を分離・精製した特定の成分気体(以下
製品ガスという)を、分離・精製に必要な圧力より低い
許容圧力のホルダーを介して、使用量の経時変化がある
使用先に供給する系統における圧力制御方法に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention is a specific component gas (hereinafter referred to as a product gas) obtained by separating and purifying a specific component gas from a multi-component gas (hereinafter referred to as a raw material gas). The present invention relates to a pressure control method in a system in which the above is supplied to a destination where there is a change in the amount used over time via a holder having an allowable pressure lower than the pressure required for separation and purification.

〈従来の技術〉 第3図にフロー図を示すように圧縮機1にて圧縮された
原料ガスは分離精製装置(以下PSAと称す)2に導か
れ、ここで分離精製された製品ガスとなりホルダー3に
て貯蔵後、各使用先へ供給されている。
<Prior Art> As shown in the flow chart of FIG. 3, the raw material gas compressed by the compressor 1 is guided to the separation and purification device (hereinafter referred to as PSA) 2, where it becomes the product gas separated and purified and becomes a holder. After being stored at No. 3, it is supplied to each destination.

従来、PSA2系内の保圧は、PSA出側に設置された圧力検
知器5の指示値が一定になるよう圧力調整弁7で調整さ
れ、ホルダー3の圧力制御は、圧力検知器6の指示値が
ホルダー3の許容圧力以下となるよう圧力調整弁8にて
調整されているが、操作端が2個(本例では圧力調整弁
7および8)必要であり、イニシャルコスト,メンテナ
ンスコストが2個分必要である。また、2個の圧力制御
系があるため、互いに干渉する可能性があり制御性が良
くない。
Conventionally, the holding pressure in the PSA2 system is adjusted by the pressure adjusting valve 7 so that the indicated value of the pressure detector 5 installed on the PSA outlet side is constant, and the pressure control of the holder 3 is performed by the pressure detector 6. Although the value is adjusted by the pressure adjusting valve 8 so that the value is equal to or lower than the allowable pressure of the holder 3, two operating ends (pressure adjusting valves 7 and 8 in this example) are required, and the initial cost and the maintenance cost are 2. You need the amount. Further, since there are two pressure control systems, they may interfere with each other and the controllability is not good.

〈発明が解決しようとする課題〉 本発明は、上記従来技術の欠点を解決するため、1個の
圧力調整弁でPSA2系内の保圧とホルダー3の保圧とを行
い、イニシャルコスト,メンテナンスコストを削減し、
かつ制御性の向上を図るためになされたものである。
<Problems to be Solved by the Invention> In order to solve the above-mentioned drawbacks of the prior art, the present invention performs the holding pressure in the PSA2 system and the holding pressure of the holder 3 with a single pressure adjusting valve, and thus the initial cost and maintenance Reduce costs,
In addition, this is done to improve controllability.

〈課題を解決するための手段〉 本発明は、流量または圧力調整装置つき圧縮機によって
圧縮された多成分系の気体を分離精製装置に導き、特定
の成分気体を分離精製した後、該特定の成分気体をホル
ダーを介して使用量の経時変化の多い特定の成分気体使
用先に供給する系統において、 分離精製装置出側配管とホルダー内とにおける特定の成
分気体圧力を測定し、その各々の圧力測定値を演算装置
に入力し、その演算装置において圧力測定値によって分
離精製装置とホルダー間に設置した圧力調整弁の弁開度
調整量を各々算出し、各々の弁開度調整量のうち小さい
方を選択し、圧力調整弁の開度を操作することを特徴と
する特定の成分気体の圧力制御方法である。
<Means for Solving the Problems> The present invention introduces a multi-component gas compressed by a compressor with a flow rate or pressure adjusting device to a separation and purification device, separates and purifies a specific component gas, and then In a system that supplies a component gas through a holder to a specific component gas usage destination with a large amount of change over time, measure the pressure of the specific component gas in the separation / purification device outlet piping and in the holder, and measure the respective pressures. Input the measured value to the arithmetic unit, and calculate the valve opening adjustment amount of the pressure adjustment valve installed between the separation and purification device and the holder based on the measured pressure value in the arithmetic unit, and the smaller of the valve opening adjustment amounts. It is a method for controlling the pressure of a specific component gas, which is characterized by selecting one of them and operating the opening of the pressure regulating valve.

〈作用〉 本発明を第1図にしたがって説明する。<Operation> The present invention will be described with reference to FIG.

PSA出側配管に設置した圧力検知器5からの信号と、ホ
ルダーに設置した圧力検知器6からの信号とを演算装置
9に入力し、それぞれの信号によって決まる圧力調節弁
7の弁開度調整量(以下MV5,MV6と称す)を算出し、弁
開度調整量の小さい方、すなわち圧力調整弁7にとって
は弁開度の小さい方を選択し、選択された弁開度調整量
を圧力調整弁7に指示し、作動させるものである。
The signal from the pressure detector 5 installed in the PSA outlet pipe and the signal from the pressure detector 6 installed in the holder are input to the arithmetic unit 9, and the valve opening adjustment of the pressure control valve 7 determined by each signal is adjusted. Amount (hereinafter referred to as MV5, MV6) is calculated, and the smaller valve opening adjustment amount, that is, the smaller valve opening adjustment amount for the pressure adjusting valve 7, is selected, and the selected valve opening adjustment amount is pressure adjusted. It instructs the valve 7 to operate.

〈実施例〉 製品ガス使用量が第2図最上段に示したように変化した
ときの圧力調整弁7の開度、各部位のガス圧力および原
料ガス量の変化を第2図にしたがって説明する。
<Example> A change in the opening of the pressure regulating valve 7, the gas pressure of each portion and the amount of raw material gas when the amount of product gas used changes as shown in the uppermost part of FIG. 2 will be described with reference to FIG. .

時点までは、ガス需給はバランスしている状態で、MV
5は、PSA内のガス圧力を確保するためにMV6より多少小
さい開度に設定されていて、圧力調整弁7の開度は、MV
5の開度調整量によって決まりほぼ一定開度を保ってい
る。
Until that point, gas supply and demand were in a balanced state, and MV
5 is set to a slightly smaller opening than MV6 to secure the gas pressure in the PSA, and the opening of the pressure control valve 7 is set to MV
It is determined by the opening adjustment amount of 5 and maintains a substantially constant opening.

時点から製品ガス使用量が減少しはじめて、ホルダー
3の圧力が上がりはじめる。したがってMV6は閉方向
へ、MV5はPSA内の圧力を下げようと開方向へ弁を操作す
るような動きとなる。
From that time, the amount of product gas used starts to decrease, and the pressure of the holder 3 starts to increase. Therefore, MV6 operates in the closing direction, and MV5 operates in the opening direction to reduce the pressure in the PSA.

時点から時点までの間は、MV5の方が小さいため、
圧力調整弁7の開度は開方向へいき、したがってホルダ
ー内の圧力は若干高くなる。
From time to time, MV5 is smaller, so
The opening of the pressure regulating valve 7 goes in the opening direction, so that the pressure in the holder becomes slightly higher.

時点から時点までの間は、製品ガス使用量が減少し
ていて、この間はMV6の方が小さいため圧力調整弁7は
閉方向へいき、同時に圧力計4の上昇により圧縮機1の
吐出量が絞られる。
From time to time, the amount of product gas used is decreasing, and during this time, since the MV6 is smaller, the pressure adjusting valve 7 moves toward the closing direction, and at the same time, the discharge amount of the compressor 1 is increased by the rise of the pressure gauge 4. Squeezed.

時点から製品ガス使用量は一定となり時点から時
点までの間は、製品ガス使用量と原料ガス量とはバラン
スしており、圧力調整弁7はMV6の弁開度調整量に依存
し、ほぼ一定開度である。
The amount of product gas used is constant from the time point, and the amount of product gas used and the amount of raw material gas are balanced from the time point to the time point, and the pressure adjustment valve 7 depends on the valve opening adjustment amount of the MV6 and is almost constant. The opening degree.

時点からは製品ガス使用量が増加し始め、ホルダー内
のガス圧力は下り始める。時点から時点までの間は
MV6の弁開度の方が小さいため圧力調整弁7は開方向に
なる。圧力検知器4の圧力が下り始め、圧縮機1の吐出
量が増加する。
From that point, the amount of product gas used starts to increase, and the gas pressure in the holder begins to drop. From time to time
Since the valve opening of the MV6 is smaller, the pressure adjusting valve 7 opens. The pressure of the pressure detector 4 begins to fall, and the discharge amount of the compressor 1 increases.

時点からは製品ガス使用量は一定となり、時点から
時点までの間はMV5の弁開度の方が小さいため圧力調
整弁7は開方向になる。
From the time point on, the amount of product gas used is constant, and from the time point to the time point, the valve opening of MV5 is smaller, so the pressure regulating valve 7 is in the opening direction.

時点からは製品ガス使用量を原料ガス量とはバランス
している。
Since then, the amount of product gas used has been balanced with the amount of raw material gas.

結局、圧力調整弁7は、時点と時点との間、および
時点と時点との間にはPSA系内の保圧のために作動
し、それ以外の時は、ホルダー圧力を一定に保つ働きを
している。
After all, the pressure regulating valve 7 operates to maintain the pressure inside the PSA system between the time points and between the time points, and at other times, it functions to keep the holder pressure constant. is doing.

以上の装置をコークス炉ガス中の水素をPSAにて分離・
精製供給する系統に設置し、実施したが、PSA系の保
圧、ホルダー圧力の一定保持を1個の圧力調整弁で行う
ことができ、また従来2個の圧力制御弁があり互いに干
渉していたが圧力調整弁が1個であるため、他との干渉
がなく制御性が向上した。
With the above equipment, hydrogen in the coke oven gas is separated by PSA.
Although it was installed in the purification supply system and carried out, the PSA system holding pressure and the holder pressure can be kept constant with one pressure adjusting valve, and there are two pressure control valves in the past, which interfere with each other. However, since there is only one pressure adjusting valve, there is no interference with the other and the controllability is improved.

〈発明の効果〉 PSA系内の保圧,ホルダー圧力一定保持の2つの目的を
1個の圧力調整弁で実施できるため、イニシャルコス
ト,メンテナンスコストが、従来の1/2ですみ、極めて
経済的である。また、圧力調整弁が1個のため、他との
干渉もなく制御性が向上する。
<Effects of the invention> Since the two purposes of holding pressure in the PSA system and holding the holder pressure constant can be performed with a single pressure control valve, the initial cost and maintenance cost are only half those of the conventional one, and it is extremely economical. Is. Further, since there is only one pressure adjusting valve, there is no interference with the other and the controllability is improved.

【図面の簡単な説明】[Brief description of drawings]

第1図は、本発明方法を説明するためのフロー図、第2
図は、本発明方法による各操作量、圧力などの経時変化
を示すグラフ、第3図は、従来方法を説明するためのフ
ロー図である。 1……流量(または圧力)調整装置つき圧縮機、2……
PSA、3……ホルダー、4……圧力検知器、5……圧力
検知器、6……圧力検知器、7……圧力調整弁、8……
圧力調整弁、9……演算装置、10……原料ガス配管、11
……製品ガス配管、12……各使用先への供給配管、13…
…原料ガス、14……製品ガス。
FIG. 1 is a flow chart for explaining the method of the present invention, and FIG.
FIG. 3 is a graph showing changes over time in respective manipulated variables and pressures according to the method of the present invention, and FIG. 3 is a flow chart for explaining the conventional method. 1 ... Compressor with flow rate (or pressure) adjusting device, 2 ...
PSA, 3 ... Holder, 4 ... Pressure detector, 5 ... Pressure detector, 6 ... Pressure detector, 7 ... Pressure adjusting valve, 8 ...
Pressure control valve, 9 ... Computing device, 10 ... Raw material gas piping, 11
…… Product gas piping, 12 …… Supply piping to each customer, 13…
… Raw material gas, 14… Product gas.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】流量または圧力調整装置つき圧縮機によっ
て圧縮された多成分系の気体を分離精製装置に導き、特
定の成分気体を分離精製した後、該特定の成分気体をホ
ルダーを介して使用量の経時変化の多い特定の成分気体
使用先に供給する系統において、 分離精製装置出側配管とホルダー内とにおける特定の成
分気体圧力を測定し、その各々の圧力測定値を演算装置
に入力し、その演算装置において圧力測定値によって分
離精製装置とホルダー間に設置した圧力調整弁の弁開度
調整量を各々算出し、各々の弁開度調整量のうち小さい
方を選択し、圧力調整弁の開度を操作することを特徴と
する特定の成分気体の圧力制御方法。
1. A multi-component gas compressed by a compressor with a flow rate or pressure adjusting device is introduced to a separation and purification device to separate and purify a specific component gas, and then the specific component gas is used via a holder. In a system that supplies a specific component gas with a large amount of change over time to the destination, measure the pressure of the specific component gas in the outlet piping of the separation and purification device and in the holder, and input each pressure measurement value to the computing device. The calculation unit calculates the valve opening adjustment amount of the pressure adjustment valve installed between the separation and purification device and the holder based on the pressure measurement value, and selects the smaller one of the valve opening adjustment amounts. A method for controlling the pressure of a specific component gas, which comprises operating the opening degree of the.
JP63032882A 1988-02-17 1988-02-17 Pressure control method for specific component gas Expired - Lifetime JPH07168B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63032882A JPH07168B2 (en) 1988-02-17 1988-02-17 Pressure control method for specific component gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63032882A JPH07168B2 (en) 1988-02-17 1988-02-17 Pressure control method for specific component gas

Publications (2)

Publication Number Publication Date
JPH01210012A JPH01210012A (en) 1989-08-23
JPH07168B2 true JPH07168B2 (en) 1995-01-11

Family

ID=12371246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63032882A Expired - Lifetime JPH07168B2 (en) 1988-02-17 1988-02-17 Pressure control method for specific component gas

Country Status (1)

Country Link
JP (1) JPH07168B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6395065B1 (en) * 1999-05-14 2002-05-28 Respironics, Inc. Air flow control in a gas fractionalization system and associated method

Also Published As

Publication number Publication date
JPH01210012A (en) 1989-08-23

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