JPH07316568A - Facility for reducing and controlling carbon monoxide concentration in city gas and method for reducing and controlling carbon monoxide gas concentration - Google Patents
Facility for reducing and controlling carbon monoxide concentration in city gas and method for reducing and controlling carbon monoxide gas concentrationInfo
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- JPH07316568A JPH07316568A JP11709894A JP11709894A JPH07316568A JP H07316568 A JPH07316568 A JP H07316568A JP 11709894 A JP11709894 A JP 11709894A JP 11709894 A JP11709894 A JP 11709894A JP H07316568 A JPH07316568 A JP H07316568A
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- Prior art keywords
- carbon monoxide
- flow rate
- gas
- raw material
- concentration
- Prior art date
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、都市ガス中の一酸化炭
素濃度を連続的に計測し、その濃度を規定の値以下とす
るための都市ガス中の一酸化炭素低減制御機構および一
酸化炭素低減制御方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention continuously measures the concentration of carbon monoxide in city gas and reduces the concentration of carbon monoxide in the city gas to a specified value or less, and a carbon monoxide reduction control mechanism. The present invention relates to a carbon reduction control method.
【０００２】[0002]
【従来の技術】周知のように、一酸化炭素は毒性が強
く、都市ガス中に含まれる濃度は、極力低い値に制限す
ることが望ましい。そのために、ガスの製造装置には一
酸化炭素を炭酸ガス等に変えるための変成装置が併設さ
れることが多い。ところで、ガス製造プロセスのうち、
触媒の存在下に反応温度３００〜１０００℃で炭化水素
と水蒸気とを反応させ、ＣＨ4、Ｈ2、ＣＯ、ＣＯ2に変
換する接触分解プロセス（水蒸気改質プロセス）は、次
の一般式のように表すことができる（都市ガス工業概要
■）。 Ａ（ＣｍＨｎ）＋Ｂ（Ｈ2Ｏ）→Ｃ（Ｈ2）＋Ｄ（ＣＯ）
＋Ｅ（ＣＯ2）＋Ｆ（ＣＨ4）＋Ｇ（Ｃ）＋Ｈ（Ｈ2Ｏ） 生成ガスの組成は、反応温度によって著しい影響を受
け、図２、図３に示すように、反応温度と平衡ガス組成
との関係において、反応温度を上昇させると、ＣＨ4、
ＣＯ2が少なく、ＣＯ、Ｈ2の多い低発熱量のガスが生成
され、反応温度を下げれば、ＣＨ4、ＣＯ2が多く、Ｃ
Ｏ、Ｈ2の少ない高発熱量のガスが生成されることがわ
かる。As is well known, carbon monoxide is highly toxic, and it is desirable to limit the concentration contained in city gas to a value as low as possible. Therefore, a gas production apparatus is often equipped with a shift device for converting carbon monoxide into carbon dioxide gas or the like. By the way, of the gas production process,
A catalytic cracking process (steam reforming process) of reacting a hydrocarbon with steam at a reaction temperature of 300 to 1000 ° C. in the presence of a catalyst to convert into CH 4 , H 2 , CO, and CO 2 is represented by the following general formula: Can be expressed as follows (Outline of city gas industry ■). A (CmHn) + B (H 2 O) → C (H 2 ) + D (CO)
+ E (CO 2 ) + F (CH 4 ) + G (C) + H (H 2 O) The composition of the product gas is significantly affected by the reaction temperature, and as shown in FIGS. 2 and 3, the reaction temperature and the equilibrium gas composition In relation to, when the reaction temperature is raised, CH 4 ,
CO 2 is small, CO, with much H 2 low calorific value gas is generated, by lowering the reaction temperature, CH 4, CO 2 much, C
It can be seen that a gas with a high calorific value containing less O and H 2 is generated.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、現時点
では、一酸化炭素の低減を制御上の条件とした自動制御
は、行われていない。その理由として、 一酸化炭素の濃度を測定する一酸化炭素濃度計が高価
である。 一酸化炭素の低減が必ずしも経済的な運転条件と合致
しない。 ガス製造装置の運転条件が複雑となる。 このために、現状では、間歇的にガスを分析し、その結
果一酸化炭素が一定濃度を越えるおそれがある場合にの
み運転条件を変更するようにしている。本発明は、以上
のような課題を改善するためになされたものであって、
連続して一酸化炭素濃度の低減制御を行うことができる
ようにした、都市ガス中の一酸化炭素低減制御機構およ
び一酸化炭素低減制御方法を提供することを目的とす
る。However, at the present time, automatic control under the control condition of reducing carbon monoxide is not performed. The reason is that a carbon monoxide concentration meter that measures the concentration of carbon monoxide is expensive. Carbon monoxide reduction does not always match economical operating conditions. The operating conditions of the gas production device are complicated. For this reason, at present, the gas is intermittently analyzed, and the operating condition is changed only when there is a possibility that carbon monoxide may exceed a certain concentration as a result. The present invention has been made to improve the above problems,
An object of the present invention is to provide a carbon monoxide reduction control mechanism and a carbon monoxide reduction control method capable of continuously controlling the carbon monoxide concentration reduction.
【０００４】[0004]
【課題を解決するための手段】前記した課題を解決する
ために、本発明は、ＬＰＧ、ナフサ等の原料に水蒸気を
接触させると共に、燃料を供給して接触分解を行わしめ
るガス改質装置と、一酸化炭素変成装置とを備え、原料
の流入量を調節するための原料流量調節弁および原料流
量調節計と、水蒸気導入量を調節するための水蒸気流量
調節弁および水蒸気流量調節計と、燃料導入量を調節す
るための燃料調節弁および燃料調節計と、ガス改質装置
の下流側に温度調節計と、一酸化炭素変成装置の下流側
に、連続測定式の一酸化炭素濃度計とを備える一方、複
数の制御パラメータから、ガス製造方式に対応して選択
された制御パラメータの値を求める制御パラメータ設定
器を備え、前記一酸化炭素濃度計の濃度信号により、制
御パラメータ設定器において選択された制御パラメータ
の値を求めて、このパラメータ値に基づいて原料流量調
節弁、水蒸気流量調節弁または燃料調節弁の流量調節を
することで、一酸化炭素濃度の低減制御を行うことを特
徴とする。また、本発明は、ガスの製造方式に応じて制
御パラメータを選択し、生成されたガス中の一酸化炭素
濃度を検出して、この一酸化炭素濃度信号に基づいて、
前記選択された制御パラメータの値を求めて原料流量、
水蒸気流量または燃料流量を調節し、一酸化炭素濃度の
低減制御を行うことを特徴とする。In order to solve the above-mentioned problems, the present invention provides a gas reforming apparatus for bringing steam into contact with a raw material such as LPG or naphtha, and supplying fuel to perform catalytic cracking. , A carbon monoxide shift converter, a raw material flow rate control valve and a raw material flow rate controller for controlling the inflow rate of the raw material, a steam flow rate control valve and a steam flow rate controller for controlling the amount of introduced steam, and a fuel A fuel control valve and a fuel control meter for controlling the introduction amount, a temperature controller on the downstream side of the gas reformer, and a continuous measurement type carbon monoxide concentration meter on the downstream side of the carbon monoxide shift converter. On the other hand, a control parameter setting device for determining the value of the control parameter selected according to the gas production method from a plurality of control parameters is provided, and the control parameter setting is performed by the concentration signal of the carbon monoxide concentration meter. In order to reduce the carbon monoxide concentration by obtaining the value of the control parameter selected in step 1 and adjusting the flow rate of the raw material flow rate control valve, the steam flow rate control valve or the fuel control valve based on this parameter value. Characterize. Further, the present invention selects the control parameter according to the gas production method, detects the carbon monoxide concentration in the generated gas, and based on this carbon monoxide concentration signal,
The raw material flow rate is obtained by obtaining the value of the selected control parameter,
It is characterized in that the flow rate of water vapor or the flow rate of fuel is adjusted to control the reduction of the carbon monoxide concentration.
【０００５】[0005]
【作用】そのガスの製造方式に対応した制御パラメータ
を選択し、連続的な一酸化炭素濃度信号に基づいて、前
記制御パラメータの値を求めて原料流量、水蒸気流量ま
たは燃料流量の調節を行うことで一酸化炭素濃度の低減
制御を行う。The control parameter corresponding to the gas production method is selected, the value of the control parameter is determined based on the continuous carbon monoxide concentration signal, and the raw material flow rate, steam flow rate or fuel flow rate is adjusted. To control the reduction of carbon monoxide concentration.
【０００６】[0006]
【実施例】次に、本発明にかかる都市ガス中の一酸化炭
素低減制御機構および一酸化炭素低減制御方法の一例を
挙げ、以下詳細に説明する。図１に一酸化炭素低減制御
機構を適用した水蒸気改質プロセスの一例を示し、この
水蒸気改質プロセスは、ＬＰＧ、ナフサ等の原料に水蒸
気を接触させると共に、燃料を供給して触媒の存在下に
反応温度３００〜１０００℃で接触分解を行わしめるガ
ス改質装置１と、生成ガス中から一酸化炭素を変成する
ための一酸化炭素変成装置２とを有する。前記ガス改質
装置１に至る流路３には、原料流量調節弁４が介在さ
れ、流量検出信号を原料流量発信器５を介して原料流量
調節計６に取り込み、原料流量調節計６からの制御信号
により、原料（ＬＰＧまたはナフサ等）の流入量を調節
する構成であり、その流路３の下流に水蒸気を導入する
ための水蒸気導入路７が合流接続されている。かかる水
蒸気導入路７には、水蒸気流量調節弁８が介在され、水
蒸気流量発信器９を介して取り込まれた流量検出信号に
基づいて水蒸気流量調節計１０により、水蒸気導入量を
調節する構成である。また、前記ガス改質装置１には、
燃料導入路１１が設けられ、燃料調節弁１２が介在され
ている。燃料調節弁１２は、燃料流量発信器１３からの
流量検出信号に基づいて燃料調節計１４により、燃料導
入量を調節する構成としている。また、ガス改質装置１
から一酸化炭素変成装置２に至る生成ガス流路１５中に
おける温度検出手段（図示せず）による温度検出信号
を、温度発信器１６を介して温度調節計１７に与え、温
度調節計１７から前記燃料調節計１４に制御信号を与え
る構成である。EXAMPLES Next, an example of a carbon monoxide reduction control mechanism and a carbon monoxide reduction control method in city gas according to the present invention will be described in detail below. FIG. 1 shows an example of a steam reforming process to which a carbon monoxide reduction control mechanism is applied. In this steam reforming process, steam is brought into contact with a raw material such as LPG or naphtha, and fuel is supplied to the raw material in the presence of a catalyst. Further, it has a gas reforming apparatus 1 for performing catalytic cracking at a reaction temperature of 300 to 1000 ° C. and a carbon monoxide shift apparatus 2 for transforming carbon monoxide from the produced gas. A raw material flow rate control valve 4 is interposed in the flow path 3 leading to the gas reforming apparatus 1, and a flow rate detection signal is taken into a raw material flow rate controller 6 via a raw material flow rate transmitter 5 so that the raw material flow rate controller 6 outputs the signal. A control signal is used to adjust the inflow amount of the raw material (LPG, naphtha, or the like), and a steam introduction path 7 for introducing steam to the downstream side of the flow path 3 is joined and connected. A steam flow rate adjusting valve 8 is interposed in the steam introducing path 7, and the steam introducing rate is adjusted by a steam flow rate controller 10 based on a flow rate detection signal taken in via a steam flow rate transmitter 9. . In addition, the gas reformer 1 includes
A fuel introduction path 11 is provided and a fuel control valve 12 is interposed. The fuel control valve 12 is configured to control the amount of fuel introduced by the fuel controller 14 based on the flow rate detection signal from the fuel flow rate transmitter 13. In addition, the gas reformer 1
To the carbon monoxide shift converter 2 through the temperature transmitter 16 a temperature detection signal by a temperature detection means (not shown) in the generated gas flow path 15 is supplied to the temperature controller 17 from the temperature controller 17. This is a configuration for giving a control signal to the fuel controller 14.
【０００７】そして、一酸化炭素変成装置２の下流側の
製造ガス流路１８には、連続測定式の一酸化炭素濃度計
１９が設けられ、この一酸化炭素濃度計１９による濃度
信号が、制御パラメータ設定器２０に与えられる構成で
ある。制御パラメータ設定器２０は、ガスの製造方式に
対応して予め制御パラメータを設定変更する機能を有し
ている。制御パラメータとしては、 ガス化原料対添加水蒸気の比率 ガス化反応の温度設定値 反応中のガスの流速 がある。これら制御パラメータから、ガス化原料対添
加水蒸気の比率が設定されたときは、制御パラメータ設
定器２０は、一酸化炭素濃度計１９の濃度信号に対応し
たガス化原料対添加水蒸気の比率を求め、原料流量調節
計６および水蒸気流量調節計１０に制御信号を与えるよ
うになっている。また、制御パラメータから、ガス化
反応の温度設定値が設定された場合は、制御パラメータ
設定器２０は、一酸化炭素濃度計１９の濃度信号に対応
してガス化反応の温度設定値を求め、前記温度調節計１
７に制御信号を与えるようになっている。そして、制御
パラメータから、反応中のガスの流速が設定された場
合は、制御パラメータ設定器２０は、一酸化炭素濃度計
１９の濃度信号に対応して反応中のガスの流速を求め、
原料流量調節計６に制御信号を与えるようになってい
る。A continuous measurement type carbon monoxide concentration meter 19 is provided in the production gas passage 18 on the downstream side of the carbon monoxide shift converter 2, and the concentration signal by the carbon monoxide concentration meter 19 is controlled. This is a configuration given to the parameter setter 20. The control parameter setting device 20 has a function of changing the setting of control parameters in advance according to the gas manufacturing method. The control parameter is the ratio of the gasification raw material to the added steam, the temperature setting value of the gasification reaction, and the flow rate of the gas during the reaction. When the ratio of the gasification raw material to the added steam is set from these control parameters, the control parameter setting device 20 obtains the ratio of the gasification raw material to the added steam corresponding to the concentration signal of the carbon monoxide concentration meter 19, A control signal is supplied to the raw material flow rate controller 6 and the steam flow rate controller 10. In addition, when the temperature set value of the gasification reaction is set from the control parameter, the control parameter setter 20 obtains the temperature set value of the gasification reaction corresponding to the concentration signal of the carbon monoxide concentration meter 19. The temperature controller 1
A control signal is given to 7. Then, when the flow rate of the gas during the reaction is set from the control parameter, the control parameter setter 20 obtains the flow rate of the gas during the reaction corresponding to the concentration signal of the carbon monoxide concentration meter 19,
A control signal is supplied to the raw material flow rate controller 6.
【０００８】以上のような一酸化炭素低減制御機構を備
えた水蒸気改質プロセスにおいて、制御パラメータ設定
器２０の制御パラメータである、ガス化原料対添加水
蒸気の比率、ガス化反応の温度設定値、反応中のガ
スの流速から、製造方法に対応したパラメータを設定
し、原料（ＬＰＧ、ナフサ）を、原料流量調節弁４を介
して流路３に送り込むと共に、水蒸気を水蒸気流量調節
弁８を介して水蒸気導入路７に送り込んで、前記流路３
を流れる原料に合流させ、ガス改質装置１に導入する。
その一方でガス改質装置１には、燃料調節弁１２、燃料
導入路１１を介して燃料が導入され、触媒の存在下に反
応温度３００〜１０００℃で接触分解を行わしめ、生成
ガス（ＣＨ4、Ｈ2、ＣＯ、ＣＯ2）に変換することがで
きる。そして、かかる変換された生成ガスを、生成ガス
流路１５を介して一酸化炭素変成装置２に送り込まれ、
生成ガス中のＣＯがＣＯ2に変成され、一定の割合に抑
制されたＣＯを含んだ製造ガスが製造ガス流路１８を介
して取り出すことができる。In the steam reforming process having the carbon monoxide reduction control mechanism as described above, the ratio of the gasification raw material to the added steam, which is the control parameter of the control parameter setting device 20, the temperature setting value of the gasification reaction, Parameters corresponding to the manufacturing method are set from the flow rate of the gas during the reaction, the raw materials (LPG, naphtha) are fed into the flow path 3 via the raw material flow rate control valve 4, and steam is passed through the steam flow rate control valve 8. And sends it to the water vapor introduction path 7,
Is introduced into the gas reforming device 1.
On the other hand, the fuel is introduced into the gas reforming apparatus 1 through the fuel control valve 12 and the fuel introducing passage 11, and catalytic cracking is performed at a reaction temperature of 300 to 1000 ° C. in the presence of a catalyst to generate a product gas (CH 4 , H 2 , CO, CO 2 ). Then, the converted product gas is sent to the carbon monoxide shift converter 2 through the product gas flow path 15,
The CO in the generated gas is converted to CO 2 , and the manufacturing gas containing CO suppressed to a certain ratio can be taken out through the manufacturing gas passage 18.
【０００９】以上のような水蒸気改質プロセスを経て取
り出された製造ガスは、製造ガス流路１８において、一
酸化炭素濃度計１９により、製造ガス中のＣＯ濃度を常
時監視しており、このＣＯ濃度信号は、制御パラメータ
設定器２０に送出される。制御パラメータ設定器２０に
おいて、ガス化原料対添加水蒸気の比率が設定された
ときは、制御パラメータ設定器２０は、一酸化炭素濃度
計１９の濃度信号に対応したガス化原料対添加水蒸気の
比率を求め、原料流量調節計６および水蒸気流量調節計
１０に制御信号を与える。また、制御パラメータから、
ガス化反応の温度設定値が設定された場合は、制御パ
ラメータ設定器２０は、一酸化炭素濃度計１９の濃度信
号に対応してガス化反応の温度設定値を求め、前記温度
調節計１７に制御信号を与える。そして、制御パラメー
タから、反応中のガスの流速が設定された場合は、制
御パラメータ設定器２０は、一酸化炭素濃度計１９の濃
度信号に対応して反応中のガスの流速を求め、原料流量
調節計６に制御信号を与える。The production gas taken out through the steam reforming process as described above is constantly monitored for CO concentration in the production gas by a carbon monoxide concentration meter 19 in the production gas passage 18. The density signal is sent to the control parameter setting device 20. When the ratio of gasification raw material to added steam is set in the control parameter setting device 20, the control parameter setting device 20 sets the ratio of gasification raw material to added steam corresponding to the concentration signal of the carbon monoxide concentration meter 19. Then, a control signal is given to the raw material flow rate controller 6 and the steam flow rate controller 10. Also, from the control parameters,
When the temperature set value of the gasification reaction is set, the control parameter setter 20 obtains the temperature set value of the gasification reaction corresponding to the concentration signal of the carbon monoxide concentration meter 19, and the temperature controller 17 Give a control signal. Then, when the flow rate of the gas during the reaction is set from the control parameter, the control parameter setting device 20 obtains the flow rate of the gas during the reaction corresponding to the concentration signal of the carbon monoxide concentration meter 19, and the raw material flow rate. A control signal is given to the controller 6.
【００１０】以上のようにして、一酸化炭素濃度計１９
の濃度信号に基づいて、選択された制御パラメータか
ら、その濃度信号に対応した値を求めて、連続的に一酸
化炭素濃度の低減制御が可能となる。また、制御パラメ
ータ設定器２０における制御パラメータを手動で設定変
更しているガスの製造装置であれば、本発明における水
蒸気改質プロセスを適用することができ、用途が広い。
なお、前述した水蒸気改質プロセスは、一般工業計器の
組合せによって構築することができるため、取り扱いが
容易であり、且つ保守も簡単である。さらに、一般工業
計器を適用するため、設備コストを抑えることができ、
燃焼性制御用にも使用可能である。As described above, the carbon monoxide concentration meter 19
Based on the concentration signal of, the value corresponding to the concentration signal is obtained from the selected control parameter, and the carbon monoxide concentration reduction control can be continuously performed. In addition, the steam reforming process of the present invention can be applied to any gas manufacturing apparatus in which the control parameter in the control parameter setting device 20 is manually changed, and the application is wide.
Since the steam reforming process described above can be constructed by combining general industrial instruments, it is easy to handle and easy to maintain. Furthermore, because general industrial instruments are applied, equipment costs can be reduced,
It can also be used for flammability control.
【００１１】[0011]
【発明の効果】以上、本発明によれば、そのガスの製造
方式に対応して設定変更した制御パラメータから、一酸
化炭素濃度信号に応じた制御パラメータ値を求めて、原
料流量調節弁または水蒸気流量調節弁または燃料調節弁
の流量調節をすることで、連続的に一酸化炭素濃度の低
減制御を行うことができる。また、制御パラメータを手
動で設定変更しているガスの製造装置であれば、本発明
における水蒸気改質プロセスを適用することができ、用
途が広い。なお、水蒸気改質プロセスは、一般工業計器
の組合せによって構築することができるため、取り扱い
が容易であり、且つ保守も簡単である。さらに、一般工
業計器を適用するため、設備コストを抑えることがで
き、燃焼性制御用にも使用可能である。As described above, according to the present invention, the control parameter value corresponding to the carbon monoxide concentration signal is obtained from the control parameter whose setting is changed corresponding to the gas production method, and the raw material flow rate control valve or the steam is controlled. By controlling the flow rate of the flow rate control valve or the fuel control valve, the carbon monoxide concentration reduction control can be continuously performed. In addition, the steam reforming process of the present invention can be applied to any gas manufacturing apparatus in which the control parameter is manually changed, and the application is wide. Since the steam reforming process can be constructed by combining general industrial instruments, it is easy to handle and easy to maintain. Further, since general industrial instruments are applied, equipment cost can be suppressed and it can be used for flammability control.
【００１２】[0012]
【図１】本発明にかかる都市ガス中の一酸化炭素低減制
御機構および一酸化炭素低減制御方法を採用したガスの
生成工程の一例を示す系統的説明図である。FIG. 1 is a systematic explanatory view showing an example of a gas generation process employing a carbon monoxide reduction control mechanism and a carbon monoxide reduction control method in city gas according to the present invention.
【図２】水蒸気改質プロセスにおいて、原料にナフサを
用いた際の、反応温度と平衡ガス組成の関係を示すグラ
フである。FIG. 2 is a graph showing the relationship between reaction temperature and equilibrium gas composition when naphtha is used as a raw material in the steam reforming process.
【図３】水蒸気改質プロセスにおいて、原料にナフサを
用いた際の、反応温度と平衡ガス組成の関係を示すグラ
フである。FIG. 3 is a graph showing the relationship between reaction temperature and equilibrium gas composition when naphtha is used as a raw material in the steam reforming process.
１ ガス改質装置 ２ 一酸化炭素変成装置 ３ 流路 ４ 原料流量調節弁 ５ 流量検出手段 ６ 原料流量調節計 ７ 水蒸気導入路 ８ 水蒸気流量調節弁 ９ 流量検出手段 １０ 水蒸気流量調節計 １１ 燃料導入路 １２ 燃料調節弁 １３ 検出手段 １４ 燃料調節計 １５ 生成ガス流路 １６ 温度検出手段 １７ 温度調節計 １８ 製造ガス流路 １９ 一酸化炭素濃度計 ２０ 制御パラメータ設定
器DESCRIPTION OF SYMBOLS 1 Gas reforming apparatus 2 Carbon monoxide shift conversion apparatus 3 Flow path 4 Raw material flow rate control valve 5 Flow rate detection means 6 Raw material flow rate control meter 7 Steam introduction path 8 Steam flow rate control valve 9 Flow rate detection means 10 Steam flow rate control apparatus 11 Fuel introduction path 12 Fuel Control Valve 13 Detecting Means 14 Fuel Regulator 15 Generated Gas Flow Path 16 Temperature Detection Means 17 Temperature Controller 18 Manufacturing Gas Flow Path 19 Carbon Monoxide Concentration Meter 20 Control Parameter Setter
Claims (2)
触させると共に、燃料を供給して接触分解を行わしめる
ガス改質装置と、一酸化炭素変成装置とを備え、原料の
流入量を調節するための原料流量調節弁および原料流量
調節計と、水蒸気導入量を調節するための水蒸気流量調
節弁および水蒸気流量調節計と、燃料導入量を調節する
ための燃料調節弁および燃料調節計と、ガス改質装置の
下流側に温度調節計と、一酸化炭素変成装置の下流側
に、連続測定式の一酸化炭素濃度計とを備える一方、複
数の制御パラメータから、ガス製造方式に対応して選択
された制御パラメータの値を求める制御パラメータ設定
器を備え、前記一酸化炭素濃度計の濃度信号により、制
御パラメータ設定器において選択された制御パラメータ
の値を求めて、このパラメータ値に基づいて原料流量調
節弁、水蒸気流量調節弁または燃料調節弁の流量調節を
することで、一酸化炭素濃度の低減制御を行うことを特
徴とする都市ガス中の一酸化炭素低減制御機構。1. A gas reforming device for contacting steam with a raw material such as LPG or naphtha and supplying a fuel to perform catalytic cracking, and a carbon monoxide shift converter, and adjusting the inflow amount of the raw material. A raw material flow rate control valve and a raw material flow rate controller for adjusting the amount of steam introduced, a steam flow rate control valve and a steam flow rate controller for adjusting the amount of steam introduced, a fuel control valve and a fuel controller for adjusting the amount of fuel introduced, and a gas A temperature controller is provided on the downstream side of the reformer, and a continuous measurement type carbon monoxide concentration meter is provided on the downstream side of the carbon monoxide shift converter, while multiple control parameters are selected according to the gas production method. The control parameter setter for obtaining the value of the selected control parameter is provided, and the value of the control parameter selected by the control parameter setter is obtained by the concentration signal of the carbon monoxide concentration meter, A carbon monoxide reduction control mechanism in city gas, characterized by controlling the flow rate of a raw material flow rate control valve, a steam flow rate control valve, or a fuel control valve based on a meter value to reduce the carbon monoxide concentration. .
タを選択し、生成されたガス中の一酸化炭素濃度を検出
して、この一酸化炭素濃度信号に基づいて、前記選択さ
れた制御パラメータの値を求めて原料流量、水蒸気流量
または燃料流量を調節し、一酸化炭素濃度の低減制御を
行うことを特徴とする都市ガス中の一酸化炭素低減制御
方法。2. A control parameter is selected according to a gas production method, the carbon monoxide concentration in the generated gas is detected, and the selected control parameter of the selected control parameter is detected based on the carbon monoxide concentration signal. A method for controlling carbon monoxide reduction in city gas, which comprises controlling a flow rate of a raw material, a steam flow rate, or a fuel flow rate to obtain a value to control a carbon monoxide concentration reduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11709894A JPH07316568A (en) | 1994-05-30 | 1994-05-30 | Facility for reducing and controlling carbon monoxide concentration in city gas and method for reducing and controlling carbon monoxide gas concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11709894A JPH07316568A (en) | 1994-05-30 | 1994-05-30 | Facility for reducing and controlling carbon monoxide concentration in city gas and method for reducing and controlling carbon monoxide gas concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07316568A true JPH07316568A (en) | 1995-12-05 |
Family
ID=14703356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11709894A Pending JPH07316568A (en) | 1994-05-30 | 1994-05-30 | Facility for reducing and controlling carbon monoxide concentration in city gas and method for reducing and controlling carbon monoxide gas concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07316568A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012046542A1 (en) * | 2010-10-05 | 2012-04-12 | 株式会社日立製作所 | Co2 separation and recovery equipment, and a coal gasification combined power plant comprising co2 separation and recovery equipment |
-
1994
- 1994-05-30 JP JP11709894A patent/JPH07316568A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012046542A1 (en) * | 2010-10-05 | 2012-04-12 | 株式会社日立製作所 | Co2 separation and recovery equipment, and a coal gasification combined power plant comprising co2 separation and recovery equipment |
| JP2012076970A (en) * | 2010-10-05 | 2012-04-19 | Hitachi Ltd | Co2 separation/recovery apparatus and coal gasification-combined power generation plant equipped with co2 separation/recovery apparatus |
| US9427703B2 (en) | 2010-10-05 | 2016-08-30 | Hitachi, Ltd. | CO2 separation and recovery equipment, and a coal gasification combined power plant comprising CO2 separation and recovery equipment |
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