JP2600976Y2 - Ammonia analyzer - Google Patents
Ammonia analyzerInfo
- Publication number
- JP2600976Y2 JP2600976Y2 JP1993064293U JP6429393U JP2600976Y2 JP 2600976 Y2 JP2600976 Y2 JP 2600976Y2 JP 1993064293 U JP1993064293 U JP 1993064293U JP 6429393 U JP6429393 U JP 6429393U JP 2600976 Y2 JP2600976 Y2 JP 2600976Y2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- concentration signal
- concentration
- time
- 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 - Fee Related
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Description
【０００１】[0001]
【産業上の利用分野】本考案は、脱硝触媒が設けられて
いる前処理装置を備えて差量法によりＮＨ3を測定でき
るようにしたアンモニア分析装置（以下ＮＨ3 分析装置
という）に関する。INVENTION The present invention relates to a relates to ammonia analyzer apparatus which can measure the NH 3 by a difference amount method comprises a pretreatment device denitration catalyst is disposed (hereinafter referred to as NH 3 analyzer).
【０００２】[0002]
【従来の技術】従来、差量法によるＮＨ3 分析装置で
は、図６に示すように、その前処理装置ａに、サンプル
ガスをそのまま導入するＮＯX ラインｂと脱硝触媒ｃを
設置したＮＨ3 ラインｄとを設け、ＮＯX ラインｂから
採取したサンプルガス中のＮＯ濃度をそのまま分析計ｅ
で測定する一方、ＮＨ3 ラインｄでは、ＮＯ＋ＮＨ3 ＋
1/4 Ｏ2 →Ｎ2 ＋3/2 Ｈ2 Ｏの反応式で示されるよう
に、ＮＯとＮＨ3 とを１：１で当量反応させた後のＮＯ
濃度を測定し、ＮＯX ラインｂで測定したＮＯ濃度とＮ
Ｈ3 ラインｄで測定したＮＯ濃度との差からＮＨ3 濃度
を求めるようにしていた。In NH 3 analysis apparatus of the Related Art Conventionally, a difference amount method, as shown in FIG. 6, to the pretreatment apparatus a, NH 3 that the sample gas was installed NO X line b and denitration catalyst c stay introduced and line d is provided, NO X line b as it spectrometer e the NO concentration of the sample gas taken from
In the NH 3 line d, NO + NH 3 +
As shown by the reaction formula of 1/4 O 2 → N 2 +3/2 H 2 O, NO after the equivalent reaction of NO and NH 3 at 1: 1
To determine the concentration, NO was measured by NO X line b Concentration and N
The NH 3 concentration was determined from the difference from the NO concentration measured at the H 3 line d.
【０００３】[0003]
【考案が解決しようとする課題】しかるに、たとえ、両
ラインのサンプルガスの流量を合わせても、両ラインが
それぞれ独立しており、配管中における吸着や溜りの相
異等によって、図７に示すように、若干の応答速度の差
が生じることが多い。従って、その応答速度の差が過渡
応答時におけるＮＨ3 出力の誤差（ハッチング部分）と
して現れるため、高精度な測定値を得ることはできな
い。However, even if the flow rates of the sample gas in the two lines are matched, the two lines are independent of each other, and as shown in FIG. Thus, a slight difference in response speed often occurs. Therefore, since the difference in the response speed appears as an error (hatched portion) of the NH 3 output at the time of the transient response, a highly accurate measured value cannot be obtained.
【０００４】本考案はこのような実情に鑑みてなされ、
ＮＯX 濃度の過渡応答時におけるＮＨ3 出力誤差を低減
できるようにしたＮＨ3 分析装置を提供することを目的
としている。The present invention has been made in view of such circumstances.
An object of the present invention is to provide an NH 3 analyzer capable of reducing an NH 3 output error at the time of a transient response of NO X concentration.
【０００５】[0005]
【課題を解決するための手段】本考案は、上述の課題を
解決するための手段を以下のように構成している。すな
わち、第１の考案では、ＮＯX ラインから検出した第１
ＮＯX 濃度信号が入力されてその信号の立上り時点の遅
延設定が可能な第１遅延回路と、その第１遅延回路に接
続されて信号出力波形の傾きを調整できる第１低域通過
フィルタと、ＮＨ3 ラインから検出した第２ＮＯX 濃度
信号が入力されてその信号の立上り時点の遅延設定が可
能な第２遅延回路と、その第２遅延回路に接続されて信
号出力波形の傾きを調整できる第２低域通過フィルタ
と、前記第１低域通過フィルタと第２低域通過フィルタ
とに接続されて立上り時点と信号出力波形の傾きが一致
された第１ＮＯX 濃度信号の出力値から第２ＮＯX 濃度
信号の出力値を減算してＮＨ3 値を算出する減算回路と
を具備してなることを特徴としている。According to the present invention, the means for solving the above-mentioned problems are constituted as follows. That is, in the first invention, the first detected from the NO X line
A first delay circuit capable of delaying setting of the rise time of the signal NO X concentration signal is input, a first low-pass filter capable of adjusting the inclination of the signal output waveform is connected to the first delay circuit, NH 3 the 2NO X concentration signal detected from the line is input first adjustable second delay circuit capable of delaying setting of the rise time of the signal, the slope of the second delay circuit connected to the signal output waveform 2 and the low-pass filter, the first low-pass filter and the 2NO X from the output value of the first 1NO X concentration signal slope is matched to the second low pass filter and connected to with a rising time point and a signal output waveform A subtraction circuit for subtracting the output value of the density signal to calculate the NH 3 value.
【０００６】第２の考案では、ＮＯX ラインから検出し
た第１ＮＯX 濃度信号とＮＨ3 ラインから検出した第２
ＮＯX 濃度信号とが入力され、両信号出力の立上り時点
間における時間差を算出する遅延時間算出処理部と、そ
の遅延時間算出処理部からの信号を受け、立上りの早い
方のＮＯX 濃度信号の立上り時点を上記時間差だけ遅延
させるとともに、その立上り勾配を遅い方のＮＯX 濃度
信号の勾配に合わせる出力補正処理部と、その出力補正
処理部からの信号を受け、第１ＮＯX 濃度信号の出力値
から、第２ＮＯX 濃度信号の出力値を減算してＮＨ3 値
を求める減算処理部とを具備してなることを特徴として
いる。[0006] In the second invention, the second detected from the 1NO X concentration signal and NH 3 lines detected from NO X line
NO X concentration signal and is input, and the delay time calculation unit for calculating a time difference between the rise time of the two signal outputs, receives a signal from the delay time calculation processing unit, the rising of the earlier of the NO X density signal An output correction processing unit that delays the rising time by the time difference and adjusts the rising gradient to the gradient of the slower NO X concentration signal, and receives the signal from the output correction processing unit, and receives the output value of the first NO X concentration signal. from is characterized by comprising; and a subtraction processing section that subtracts the output value of the 2NO X concentration signal obtaining the NH 3 value.
【０００７】[0007]
【作用】第１の考案では、ＮＯX ラインとＮＨ3 ライン
とにゼロガス（ＮＯガス）を流し、その応答開始の時間
差、つまり遅れ時間ｔ秒を確認し、進んでいる方のライ
ンに接続された遅延回路に遅延時間ｔ秒を設定し、両ラ
インでの応答速度を揃えるとともに、その進んでいる方
のラインに接続された低域通過フィルタの時定数（τ）
を適当な値に設定して、第１ＮＯX 濃度信号と第２ＮＯ
X 濃度信号の立上り時点と、出力波形とを一致させれ
ば、減算回路によって求められる過渡応答時のＮＨ3 値
の出力はほとんどゼロとすることができる。従って、そ
の状態で測定すれば、精度の高い測定値が得られる。According to the first invention, zero gas (NO gas) is supplied to the NO X line and the NH 3 line, and the time difference between the start of the response, that is, the delay time t seconds, is confirmed. The delay time is set to t seconds in the delay circuit to make the response speeds of both lines uniform, and the time constant (τ) of the low-pass filter connected to the line that goes ahead is set.
The set to an appropriate value, the 1NO X concentration signal and the 2NO
By making the rising point of the X concentration signal coincide with the output waveform, the output of the NH 3 value at the time of the transient response obtained by the subtraction circuit can be made almost zero. Therefore, if measurement is performed in that state, a highly accurate measurement value can be obtained.
【０００８】第２の考案では、遅延時間算出処理部で第
１ＮＯX 濃度信号と第２ＮＯX 濃度信号とを受信し、両
信号出力の時間差が算出され、出力補正処理部で、立上
りの早い方のＮＯX 濃度信号の立上り時点がその時間差
だけ遅延させられるとともに、その立上り勾配が遅い方
のＮＯX 濃度信号の勾配に合わされる。しかる後に、減
算処理部で、第１ＮＯX 濃度信号の出力値から、第２Ｎ
ＯX 濃度信号の出力値が減算されて精度の高いＮＨ3 値
が求められる。[0008] In the second invention, receives the first 1NO X concentration signal and the 2NO X concentration signal by the delay time calculation processing unit, the time difference between the two signals output is calculated, by the output correction unit, whichever rise The rising time of the NO X concentration signal is delayed by the time difference, and the rising gradient of the NO X concentration signal is adjusted to the gradient of the NO X concentration signal having a slower rising edge. Thereafter, the subtraction processing unit, the output value of the first 1NO X concentration signal, the 2N
O X density signal output value is subtracted in a high NH 3 value accuracy is required.
【０００９】[0009]
【実施例】以下に本考案の実施例を図面に基づいて詳細
に説明する。図１は第１の考案のＮＨ3 分析装置の一実
施例におけるＮＯ計内に組み込まれた要部構成を示し、
符号１は、ＮＯX ライン６（図３参照）から導入したサ
ンプルガスをＮＯ計16で検出して得た第１ＮＯX 濃度信
号が入力されてその信号の立上り時点の遅延設定が可能
な第１遅延回路、２はその第１遅延回路１に接続されて
信号出力波形の傾きを調整できる第１低域通過フィル
タ、３はＮＨ3 ライン７からのサンプルガスから得た第
２ＮＯX 濃度信号が入力されてその信号の立上り時点の
遅延設定が可能な第２遅延回路、４はその第２遅延回路
３に接続されて信号出力波形の傾きを調整できる第２低
域通過フィルタ、５は第１低域通過フィルタ２と第２低
域通過フィルタ４とに接続されて第２ＮＯX 濃度信号
に、立上り時点および信号出力波形の傾きとが一致され
た第１ＮＯX 濃度信号の出力値から、第２ＮＯX 濃度信
号の出力値を減算してＮＨ3 値を算出する減算回路であ
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a main configuration incorporated in an NO meter in an embodiment of the NH 3 analyzer of the first invention,
Reference numeral 1, NO X line 6 (see FIG. 3) first possible delay settings for the rise time of the introduced first 1NO X concentration signal is input that signal to the sample gas obtained by the detection with NO meter 16 from The delay circuit 2 is connected to the first delay circuit 1 and is a first low-pass filter capable of adjusting the slope of a signal output waveform. The delay circuit 2 receives a second NO X concentration signal obtained from a sample gas from the NH 3 line 7. The second delay circuit 4, which is capable of setting a delay at the rising point of the signal, is connected to the second delay circuit 3, and is a second low-pass filter capable of adjusting the slope of the signal output waveform. to a 2NO X concentration signal is connected to the band pass filter 2 and a second low-pass filter 4, the output value of the first 1NO X concentration signal and the slope of the rise time and the signal output waveforms are matched, the 2NO X NH 3 by subtracting the output value of the density signal A subtraction circuit for calculating a.
【００１０】上述の第１ＮＯX 濃度信号は、前処理装置
11のＮＯX コンバータ９（図３参照）を介してＮＯに還
元されたサンプルガスをＮＯX ライン６からそのままＮ
Ｏ計16に導入して検出される出力信号であり、第２ＮＯ
X 濃度信号は、前処理装置11のＮＨ3 ライン７に設けた
脱硝触媒８を通過させてサンプルガス中のＮＯをＮＨ3
と当量反応させた後にＮＯ計16で検出される出力信号で
ある。なお、図３中、12は例えば発電用ガスタービンか
らの排ガスが流過する煙道、13はその煙道12を形成する
配管、14はサンプルガス中のＮＯとＮＨ3 とのモル比を
ＮＯ≧ＮＨ3 とするためのＮＯ添加用のパイプ、15は電
磁弁、17は流量計、18はＮＯボンベである。そして、上
述のＮＯX コンバータ９の前面には、図示は省略する
が、外部からの操作で開閉できる蓋体が設けられてい
る。[0010] The 1NO X concentration signal described above, the pretreatment apparatus
11 of the NO X converter 9 as N the reduced sample gas to NO through (see FIG. 3) from the NO X line 6
O is an output signal which is introduced into the O total 16 and detected.
The X concentration signal is passed through a denitration catalyst 8 provided in the NH 3 line 7 of the pretreatment device 11 to convert NO in the sample gas into NH 3.
And the output signal detected by the NO total 16 after the equivalent reaction. In FIG. 3, reference numeral 12 denotes a flue through which exhaust gas from a power generation gas turbine flows, 13 denotes a pipe forming the flue 12, and 14 denotes a molar ratio between NO and NH 3 in the sample gas. A pipe for adding NO to satisfy ≧ NH 3 , 15 is a solenoid valve, 17 is a flow meter, and 18 is a NO cylinder. Then, on the front surface of the NO X converter 9 above, although not shown, a lid can be opened and closed by operation from the outside.
【００１１】通常、ＮＯX ライン６とＮＨ3 ライン７は
かなり長尺（数10ｍ）になるため、個々に流量調整がお
こなわれるものの、図２に示されるように、両信号の立
上り時点の応答のタイミングが一致しないことが多い。
そこで、測定前に、まず、ＮＯX コンバータ９の前面を
蓋体で閉じ、ＮＯボンベ18からＮＯガスをモニタリング
用のゼロガスとして両ライン６，７に添加し、第１ＮＯ
X 濃度信号と第２ＮＯX 濃度信号の応答時間差ｔ秒を予
めモニタリングする。そして、応答の早い方のライン、
例えばＮＯX ライン６（またはＮＨ3 ライン７）の第１
遅延回路１（または第２遅延回路３）をｔ秒だけ遅らせ
るように遅延時間の設定をおこない、両方のＮＯX 濃度
信号の立上り時点を一致させる。次いで、第１低域通過
フィルタ２（または第２低域通過フィルタ４）の時定数
（τ）を適当な値に設定することにより、破線で示すよ
うに、信号出力波形の勾配の調整をおこない、第１ＮＯ
X濃度信号と第２ＮＯX 濃度信号の立上り時点と信号出
力波形を一致させる。Normally, the NO X line 6 and the NH 3 line 7 are considerably long (several tens of meters). Therefore, the flow rate is individually adjusted. However, as shown in FIG. Often do not match.
Therefore, before the measurement, first, close the front of the NO X converter 9 in the lid, the NO gas was added to both lines 6 and 7 as zero gas for monitoring the NO cylinder 18, first 1NO
X concentration signal and advance monitoring the response time difference t seconds of the 2NO X concentration signal. And the line with the quickest response,
For example, the first of the NO X line 6 (or the NH 3 line 7)
Delay circuit 1 (or the second delay circuit 3) to set the delay time to delay only t seconds, to match the rise time of both of the NO X density signal. Next, by setting the time constant (τ) of the first low-pass filter 2 (or the second low-pass filter 4) to an appropriate value, the gradient of the signal output waveform is adjusted as shown by the broken line. , 1st NO
X density signal and to match the rise time and the signal output waveform of the 2NO X concentration signal.
【００１２】このように両信号出力波形を一致させた
後、減算回路５で、第１ＮＯX 濃度信号の出力値より、
第２ＮＯX 濃度信号の出力値を減じると、ＮＨ3 値とし
てゼロ値が出力される（図示省略）。つまり、過渡的な
応答誤差の発生を解消することができる。従って、この
ような調整状態下で、蓋体を開き、サンプルガスをＮＯ
X ライン６とＮＨ3 ライン７に導入して、差量法により
精度の高いＮＨ3 値を求めることができるのである。な
お、上述のような調整は例えば１ヶ月毎あるいは数ヶ月
毎に定期的におこなわれるのが好ましい。[0012] After thus match the two signals output waveform, the subtracting circuit 5, the output value of the second 1NO X concentration signal,
When subtracting the output value of the 2NO X concentration signal, a zero value is output as the NH 3 value (not shown). That is, occurrence of a transient response error can be eliminated. Therefore, under such an adjusted state, the lid is opened and the sample gas is
By introducing the X line 6 and the NH 3 line 7, a highly accurate NH 3 value can be obtained by the difference method. It is preferable that the above-described adjustment is performed periodically, for example, every month or every several months.
【００１３】ちなみに、ＮＨ3 分析装置の構成を図４に
示す。同図にて、符号21はドレンセパレータ、22はクー
ラー、23はミストキャッチャー、24はコンバータ、25は
フィルタ、26はニードルバルブ、27はポンプ、28はクー
ラー、29は流量計、30はレギュレータ、31はフィルタ、
32はポンプ、33は、キャピラリ等を介して一定流量のサ
ンプルガスが導入されるように構成されるＮＯ計16に対
して、脈動をなくし、かつ負荷を低減させるために設け
たバイパスである。FIG. 4 shows the configuration of the NH 3 analyzer. In the figure, reference numeral 21 is a drain separator, 22 is a cooler, 23 is a mist catcher, 24 is a converter, 25 is a filter, 26 is a needle valve, 27 is a pump, 28 is a cooler, 29 is a flow meter, 30 is a regulator, 31 is a filter,
Reference numeral 32 denotes a pump, and reference numeral 33 denotes a bypass provided for eliminating a pulsation and reducing a load on the NO meter 16 configured to introduce a fixed flow rate of the sample gas through a capillary or the like.
【００１４】図５は第２の考案のＮＨ3 分析装置の一実
施例におけるＮＯ計（図示省略）内に設けられたＣＰＵ
41の構成を示し、符号42は、第１ＮＯX 濃度信号と第２
ＮＯX 濃度信号の立上り時点間における時間差ｔを算出
するための遅延時間算出処理部、43は、立上りの早い方
のＮＯX 濃度信号の立上り時点を上記時間差ｔだけ遅延
させるとともに、その立上り勾配を遅い方のＮＯX 濃度
信号の勾配に合わせる出力補正処理部、44はその出力補
正処理部43からの信号を受け、第１ＮＯX 濃度信号の出
力値から、第２ＮＯX 濃度信号の出力値を減算してＮＨ
3 値を求める減算処理部、45はメモリ部である。FIG. 5 shows a CPU provided in an NO meter (not shown) in an embodiment of the NH 3 analyzer of the second invention.
41 shows the configuration of the sign 42 is a 1NO X concentration signal and the second
The delay time calculation processing unit 43 for calculating the time difference t between the rising points of the NO X concentration signal delays the rising point of the NO X concentration signal having the earlier rising time by the time difference t, and reduces the rising slope. the output correction unit to match the slope of the slower of the NO X concentration signal, 44 receives a signal from the output correction unit 43, the output value of the first 1NO X concentration signal, subtracts the output value of the 2NO X concentration signal And NH
Subtraction processing section for obtaining the 3 values, 45 is a memory unit.
【００１５】このようなソフト処理によっても、過渡的
な応答誤差の発生を防ぎ、精度の高い測定値を得ること
ができる。なお、この場合、特に、ゼロガスとしてのＮ
Ｏガスを用いて遅延時間のモニタリングをするまでもな
く、インプロセスで両信号出力波形を一致させて精度の
高い測定値を得ることができる。Even with such software processing, occurrence of a transient response error can be prevented, and a highly accurate measured value can be obtained. In this case, in particular, N
Without monitoring the delay time using the O gas, both signal output waveforms can be matched in-process to obtain a highly accurate measurement value.
【００１６】[0016]
【考案の効果】以上説明したように、第１の考案のＮＨ
3 分析装置によれば、ＮＯX ラインとＮＨ3 ラインとに
それぞれ遅延回路と低域通過フィルタとを設けてゼロガ
ス（ＮＯガス）によるモニタリングで、両ラインから検
出したＮＯX 濃度信号の立上り時点とその出力波形を一
致させるようにしたので、過渡応答誤差の発生を低減抑
制し、精度の高いＮＨ3 値を得ることができる。[Effects of the Invention] As described above, the NH of the first invention is described.
According to the three analyzers, a delay circuit and a low-pass filter are provided for the NO X line and the NH 3 line, respectively, and monitoring with zero gas (NO gas) is performed by monitoring the rising time of the NO X concentration signal detected from both lines. Since the output waveforms are matched, the occurrence of a transient response error can be reduced and suppressed, and a highly accurate NH 3 value can be obtained.
【００１７】第２の考案のＮＨ3 分析装置によれば、Ｃ
ＰＵ内に、遅延時間算出処理部、出力補正処理部および
減算処理部を設けたので、両ラインから検出したＮＯX
濃度信号の立上り時点と出力波形を、特にモニタリング
をおこなわずとも、インプロセスで一致させることがで
き、より簡易に精度の高い測定値を得ることができる。According to the NH 3 analyzer of the second invention, C
Since the PU includes the delay time calculation processing unit, the output correction processing unit, and the subtraction processing unit, the NO X detected from both lines
The rising time of the density signal and the output waveform can be matched in-process without particularly monitoring, and a highly accurate measured value can be obtained more easily.
【図１】第１の考案のＮＨ3 分析装置の一実施例を示す
要部構成図である。FIG. 1 is a main part configuration diagram showing an embodiment of an NH 3 analyzer of the first invention.
【図２】同第１ＮＯX 濃度信号と第２ＮＯX 濃度信号の
出力波形を示すグラフである。2 is a graph showing the output waveform of the first 1NO X concentration signal and the 2NO X concentration signal.
【図３】同前処理装置の構成を示す断面図である。FIG. 3 is a cross-sectional view showing a configuration of the pretreatment device.
【図４】同ＮＨ3 分析装置の全体構成図である。FIG. 4 is an overall configuration diagram of the NH 3 analyzer.
【図５】第２の考案のＮＨ3 分析装置の一実施例を示す
要部構成図である。FIG. 5 is a main part configuration diagram showing an embodiment of the NH 3 analyzer of the second invention.
【図６】従来のＮＨ3 分析装置の概略構成図である。FIG. 6 is a schematic configuration diagram of a conventional NH 3 analyzer.
【図７】同ＮＨ3 値の過度応答誤差の発生を説明するた
めのグラフである。FIG. 7 is a graph for explaining occurrence of an excessive response error of the NH 3 value.
１…第１遅延回路、２…第１低域通過フィルタ、３…第
２遅延回路、４…第２低域通過フィルタ、５…減算回
路、６…ＮＯX ライン、７…ＮＨ3 ライン、42…遅延時
間算出処理部、43…出力補正処理部、44…減算処理部。1 ... the first delay circuit, 2 ... first low-pass filter, 3: second delay circuit, 4 ... second low-pass filter, 5 ... subtracter circuit, 6 ... NO X line, 7 ... NH 3 line, 42 ... Delay time calculation processing unit, 43 output correction processing unit, 44 subtraction processing unit.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−88331（ＪＰ，Ａ) 特開 平７−163836（ＪＰ，Ａ) 特開 平４−358520（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) G01N 31/00 G01N 1/22 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-88331 (JP, A) JP-A-7-163836 (JP, A) JP-A-4-358520 (JP, A) (58) Field (Int.Cl. 6 , DB name) G01N 31/00 G01N 1/22
Claims (2)
度信号が入力されてその信号の立上り時点の遅延設定が
可能な第１遅延回路と、その第１遅延回路に接続されて
信号出力波形の傾きを調整できる第１低域通過フィルタ
と、ＮＨ3 ラインから検出した第２ＮＯX 濃度信号が入
力されてその信号の立上り時点の遅延設定が可能な第２
遅延回路と、その第２遅延回路に接続されて信号出力波
形の傾きを調整できる第２低域通過フィルタと、前記第
１低域通過フィルタと第２低域通過フィルタとに接続さ
れて立上り時点と信号出力波形の傾きが一致された第１
ＮＯX 濃度信号の出力値から第２ＮＯX 濃度信号の出力
値を減算してＮＨ3 値を算出する減算回路とを具備して
なることを特徴とするアンモニア分析装置。1. A a first delay circuit capable of delaying setting of the rise time of the signal first 1NO X concentration signal detected from NO X line is input, the signal output waveform is connected to the first delay circuit a first low-pass filter capable of adjusting the inclination, NH 3 first 2NO X concentration signal the possible delay settings for the rise time of the input the signal 2 detected from the line
A delay circuit, a second low-pass filter connected to the second delay circuit for adjusting a slope of a signal output waveform, and a rising time point connected to the first low-pass filter and the second low-pass filter. And the first where the slope of the signal output waveform is matched
NO X concentration signal ammonia analyzer characterized by comprising comprises a subtraction circuit for calculating the NH 3 value by subtracting the output value of the 2NO X density signal from an output value of.
度信号とＮＨ3 ラインから検出した第２ＮＯX 濃度信号
とが入力され、両信号出力の立上り時点間における時間
差を算出する遅延時間算出処理部と、その遅延時間算出
処理部からの信号を受け、立上りの早い方のＮＯX 濃度
信号の立上り時点を上記時間差だけ遅延させるととも
に、その立上り勾配を遅い方のＮＯX 濃度信号の勾配に
合わせる出力補正処理部と、その出力補正処理部からの
信号を受け、第１ＮＯX 濃度信号の出力値から、第２Ｎ
ＯX 濃度信号の出力値を減算してＮＨ3 値を求める減算
処理部とを具備してなることを特徴とするアンモニア分
析装置。2. A NO first 2NO X concentration signal detected from the 1NO X concentration signal and NH 3 lines detected from X line and is input, the delay time calculates the time difference between the rise time of the two signals output calculation processing unit When receives the signal from the delay time calculation processing unit, the rise time of the rising of the earlier of the NO X concentration signal with delaying the time difference, align the rising gradient to the gradient of the slower of the NO X concentration signal output receiving a correction processing unit, a signal from the output correction unit, the output value of the first 1NO X concentration signal, the 2N
O X density signal ammonia analyzer characterized by comprising comprises a subtraction processing section for obtaining the NH 3 value by subtracting the output value of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993064293U JP2600976Y2 (en) | 1993-11-06 | 1993-11-06 | Ammonia analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993064293U JP2600976Y2 (en) | 1993-11-06 | 1993-11-06 | Ammonia analyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0729460U JPH0729460U (en) | 1995-06-02 |
| JP2600976Y2 true JP2600976Y2 (en) | 1999-11-02 |
Family
ID=13254052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993064293U Expired - Fee Related JP2600976Y2 (en) | 1993-11-06 | 1993-11-06 | Ammonia analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2600976Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002214082A (en) * | 2001-01-24 | 2002-07-31 | Tsukasa Sokken Co Ltd | Simultaneity correction apparatus for ensuring simultaneity in measurement of mass emission or fuel consumption quantity by high speed continuous measurement of flow rate and composition of exhaust gas |
-
1993
- 1993-11-06 JP JP1993064293U patent/JP2600976Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0729460U (en) | 1995-06-02 |
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