JPS62259058A - Measuring instrument for carbon concentration - Google Patents
Measuring instrument for carbon concentrationInfo
- Publication number
- JPS62259058A JPS62259058A JP61100927A JP10092786A JPS62259058A JP S62259058 A JPS62259058 A JP S62259058A JP 61100927 A JP61100927 A JP 61100927A JP 10092786 A JP10092786 A JP 10092786A JP S62259058 A JPS62259058 A JP S62259058A
- Authority
- JP
- Japan
- Prior art keywords
- sample liquid
- liquid
- carbon
- gas
- extractor
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 55
- 238000000605 extraction Methods 0.000 claims abstract description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 3
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 3
- 239000000523 sample Substances 0.000 claims description 36
- 238000005259 measurement Methods 0.000 claims description 10
- 239000012488 sample solution Substances 0.000 claims description 5
- 239000005416 organic matter Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 239000012295 chemical reaction liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、液中の炭素濃度を測定する装置に係り、特に
低濃度から高濃度まで炭素濃度を測定するのに好適な測
定装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for measuring carbon concentration in a liquid, and particularly to a measuring device suitable for measuring carbon concentration from a low concentration to a high concentration.
従来、試料液中の炭素濃度の範囲を高範囲に測定する方
法としては、マイクロシリンジにより試料液を手動注入
し、試料の注入量を濃度に応じて変える方法が有る。Conventionally, as a method for measuring a high range of carbon concentration in a sample liquid, there is a method in which the sample liquid is manually injected using a microsyringe and the amount of sample injected is changed according to the concentration.
なお、この種の測定装置として関連するものには例えば
特開昭６０−１４２２５６号が挙げられる。Note that related measuring devices of this type include, for example, Japanese Patent Application Laid-Open No. 142256/1983.
前記従来の技術の項で述べた方法によると、試料液の量
を濃度に応じて増減し手動注入する方法では、注入その
ものが手動操作を要すること、また試料液の濃度を求め
るには測定結果に対して試料液の量の補正が必要である
。また測定レンジに応じて抽出ガスの量を変えるのみで
は測定可能な濃度範囲は十分とはいえない。According to the method described in the prior art section, in which the amount of sample liquid is increased or decreased depending on the concentration and manually injected, the injection itself requires manual operation, and in order to determine the concentration of the sample liquid, the measurement result is Therefore, it is necessary to correct the amount of sample liquid. Furthermore, it cannot be said that the measurable concentration range is sufficient just by changing the amount of extracted gas depending on the measurement range.
本発明の目的は測定レンジに応じて試料液の量及び抽出
ガスの量を自動的に変えろことにより人手を要さずに広
い範囲の濃度測定が可能な濃度測定装置を提供すること
にある。An object of the present invention is to provide a concentration measuring device that can automatically change the amount of sample liquid and the amount of extracted gas depending on the measurement range, thereby making it possible to measure concentrations over a wide range without requiring manual labor.
上記目的は、測定レンジに応じて試料液供給量及び抽出
ガスの流量をコントロールするコントロールユニットを
設け、さらに、このコントロールユニットに、赤外線分
析計の出力、試料液供給量、抽出ガスの流量にもとづい
て試料液の炭素濃度を算出、表示する機能を持たせる事
により達成される。試料液供給量を変えるのは容斌可変
ポンプを用い、抽出ガスを変えるのは抽出ガスラインに
流量制御弁を用いることにより実施できろ。試料液供給
量を変える他の方法としては、各測定レンジに応じた流
量を流せる固定絞りを有するラインをポンプの吐出側に
複数ライン設けておき、測定レンジに応じて電磁弁等の
開閉により必要なラインに流す方法も有る。The above purpose is to provide a control unit that controls the amount of sample liquid supplied and the flow rate of extraction gas according to the measurement range. This is achieved by providing a function to calculate and display the carbon concentration of the sample solution. The amount of sample liquid supplied can be changed by using a variable displacement pump, and the extraction gas can be changed by using a flow control valve in the extraction gas line. Another way to change the amount of sample liquid supplied is to install multiple lines on the discharge side of the pump with fixed throttles that can flow the flow rate according to each measurement range, and then open and close a solenoid valve, etc. according to the measurement range. There is also a way to run it on a line.
試料液の炭素濃度をＰ （ｐｐ＋ｗ）、試料液の供給量
をＦ ｓ （＊／−１ｎ）、抽出ガスの流量をＦｅ（ｃ
ｃ／ｌｌｌ１ｎ）、赤外線分析器の出力をｘ （ｒｐｍ
）とし、定数をαとすると、
ｘ＝ａＸＰＸＦｑ／Ｆｅ −
（１）が成り立つ、従って試料液濃度Ｐが変化しても。The carbon concentration of the sample liquid is P (pp+w), the supply amount of the sample liquid is F s (*/-1n), and the flow rate of the extraction gas is Fe (c
c/lll1n), the output of the infrared analyzer is x (rpm
) and the constant is α, then x=aXPXFq/Fe −
(1) holds true even if the sample solution concentration P changes.
赤外線分析器の出力Ｘが検出可能な値になる様試料液供
給量Ｆｓおよび抽出ガスの流量Ｆｅをコントロールする
事により、試料液の広い濃度範囲に対して測定が可能と
なり、また、（１）式に従って、赤外線分析器の出力Ｘ
、試料液供給量Ｆｓ。By controlling the sample liquid supply amount Fs and the extraction gas flow rate Fe so that the output X of the infrared analyzer becomes a detectable value, it is possible to measure a wide concentration range of the sample liquid, and (1) According to the formula, the output of the infrared analyzer
, sample liquid supply amount Fs.
抽出ガスの流にＦｏより試料液の濃度を求める事ができ
る。これらの事は、コントロールユニットが各測定レン
ジに応じて試料液の量及び抽出ガスの流量を流す様制御
させ、さらに、これらの流量及び、赤外線検出器の出力
にもとづき前記（１）式により試料液の濃度を算出し、
その結果を表示する。The concentration of the sample liquid can be determined from Fo in the flow of the extracted gas. To solve these problems, the control unit controls the amount of sample liquid and the flow rate of extraction gas according to each measurement range, and then calculates the amount of sample liquid using equation (1) above based on these flow rates and the output of the infrared detector. Calculate the concentration of the liquid,
Display the results.
本発明の一実施例を図面により説明する。本実施例は、
試料液中の有機炭素を高温、高圧下で連続的に酸化し、
連続的に抽出して濃度を測定する有機炭素濃度計に本発
明を適用した一例を示す。An embodiment of the present invention will be described with reference to the drawings. In this example,
The organic carbon in the sample solution is continuously oxidized at high temperature and pressure.
An example in which the present invention is applied to an organic carbon concentration meter that continuously extracts and measures the concentration will be shown.
試料液は、試料液槽Ａより試料液ポンプ１によす送られ
る。これに反応液槽より反応液が反応液ポンプ２により
送り込まれる。試料液は脱気器３に入り、バルブ５を通
って来る脱気ガスにより無気炭素を脱気され、無機炭素
を含んだ脱気ガスは放出ライン４より放出される。その
後試料液は高圧ポンプ７により昇圧され、脱気器からは
余分の試料液がドレンライン６より放出される。高圧ポ
ンプにより昇圧された試料液は反応器８に入り、高温に
加熱されて、反応管９内で試料液内の有機物が酸化され
る。その後試料液は冷却鼎１０により冷却され、減圧弁
】１により減圧される。減圧された試料液は貯槽１２に
入り、コントロールユニット１７からの指示に従って必
要な流量が試料液供給ポンプ１４により抽出器１５に送
られる。貯槽１２からは、余分な試料液がドレンライン
１３により放出される。抽出器１５には、コントロール
ユニット１７の指示に従って必要な量の抽出ガスが、コ
ントロール弁１８により流量をコントロールされて人っ
て来る。抽出器１５により、酸化した試料液中の有機炭
素は炭酸ガスとして抽出され、抽出ガスと共に赤外線分
析器１６に入る。抽出された後の液はドレンライン１９
により排出される。コントロールユニットは、設定測定
レンジにもとづく試料液の量、抽出ガスの量及び赤外線
分析器の出力をもとに前記（１）式により、試料液の有
機炭素濃度を算出して表示する０本発明において試料液
供給量及び抽出ガスの流量は各測定レンジに於いて一定
になる様に設定しておき、あらかじめ検定しておいた流
量を用いるようにしているので、各々の流量を炭素濃度
側定時毎に測定する必要はない。The sample liquid is sent from the sample liquid tank A to the sample liquid pump 1. A reaction liquid is fed into this by a reaction liquid pump 2 from a reaction liquid tank. The sample liquid enters the deaerator 3, where the inorganic carbon is removed by the deaeration gas passing through the valve 5, and the deaeration gas containing inorganic carbon is released from the release line 4. Thereafter, the pressure of the sample liquid is increased by the high-pressure pump 7, and excess sample liquid is discharged from the deaerator through the drain line 6. The sample liquid pressurized by the high-pressure pump enters the reactor 8, is heated to a high temperature, and organic substances in the sample liquid are oxidized in the reaction tube 9. Thereafter, the sample liquid is cooled by a cooling tube 10, and the pressure is reduced by a pressure reducing valve 1. The reduced pressure sample liquid enters the storage tank 12, and the required flow rate is sent to the extractor 15 by the sample liquid supply pump 14 according to instructions from the control unit 17. Excess sample liquid is discharged from the storage tank 12 through a drain line 13. A necessary amount of extraction gas is delivered to the extractor 15 according to instructions from a control unit 17, with the flow rate being controlled by a control valve 18. Organic carbon in the oxidized sample liquid is extracted as carbon dioxide gas by the extractor 15, and enters the infrared analyzer 16 together with the extracted gas. The liquid after being extracted is drain line 19
It is discharged by The control unit calculates and displays the organic carbon concentration of the sample liquid using the above formula (1) based on the amount of sample liquid based on the set measurement range, the amount of extracted gas, and the output of the infrared analyzer. The sample liquid supply amount and extraction gas flow rate are set to be constant in each measurement range, and the pre-verified flow rate is used, so each flow rate is adjusted to the carbon concentration side at a fixed time. There is no need to measure every time.
本発明によれば、低濃度から高濃度までの広い範囲の炭
素濃度を人手を介さずに自動的に測定することができる
。According to the present invention, carbon concentrations in a wide range from low concentrations to high concentrations can be automatically measured without human intervention.
図面は試料液中の有機物を高温、高圧下で連続酸化し、
連続的に抽出して有機炭素濃度を測定する有機炭素濃度
計に本発明を適用した場合の一実施例を示したものであ
る。
ｌ４・・・試料液供給ポンプ、１５・・・抽出器、］７
・・・コントロールユニット、１８・・・コントロール
弁。The drawing shows the continuous oxidation of organic matter in the sample solution at high temperature and high pressure.
This figure shows an example in which the present invention is applied to an organic carbon concentration meter that measures organic carbon concentration through continuous extraction. l4...Sample liquid supply pump, 15...Extractor, ]7
...Control unit, 18...Control valve.
Claims (1)
器からの抽出ガスにより酸化した炭素を炭酸ガスとして
抽出し、炭素濃度を検出する炭素濃度測定装置において
、前記抽出器の前に設けた貯液槽及び可変容量ポンプと
、抽出ガス流量をコントロールするコントロール弁と、
赤外線分析計の測定レンジに応じて抽出器へ流れる液量
および抽出ガスの流量を変化させ、かつ赤外線分析計の
出力、抽出器へ流れる液量、抽出ガスの流量に基づき試
料液の炭素濃度を算出する機能を有するコントロールユ
ニットとを備えたことを特徴とする炭素濃度測定装置。1. In a carbon concentration measuring device that detects carbon concentration by oxidizing organic matter in a sample solution at high temperature and high pressure, and extracting the oxidized carbon as carbon dioxide gas with an extraction gas from an extractor, before the extractor. A liquid storage tank and a variable capacity pump provided, a control valve that controls the extraction gas flow rate,
The amount of liquid flowing to the extractor and the flow rate of extracted gas are changed according to the measurement range of the infrared analyzer, and the carbon concentration of the sample liquid is determined based on the output of the infrared analyzer, the amount of liquid flowing to the extractor, and the flow rate of extracted gas. A carbon concentration measuring device comprising: a control unit having a calculation function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61100927A JPS62259058A (en) | 1986-05-02 | 1986-05-02 | Measuring instrument for carbon concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61100927A JPS62259058A (en) | 1986-05-02 | 1986-05-02 | Measuring instrument for carbon concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62259058A true JPS62259058A (en) | 1987-11-11 |
Family
ID=14286984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61100927A Pending JPS62259058A (en) | 1986-05-02 | 1986-05-02 | Measuring instrument for carbon concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62259058A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020021712A1 (en) * | 2018-07-27 | 2020-01-30 | 株式会社島津製作所 | Analysis device |
-
1986
- 1986-05-02 JP JP61100927A patent/JPS62259058A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020021712A1 (en) * | 2018-07-27 | 2020-01-30 | 株式会社島津製作所 | Analysis device |
| JPWO2020021712A1 (en) * | 2018-07-27 | 2021-06-24 | 株式会社島津製作所 | Analysis equipment |
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