JP2002189019A5

JP2002189019A5 -

Info

Publication number: JP2002189019A5
Application number: JP2000387308A
Authority: JP
Filing date: 2000-12-20
Publication date: 2004-11-04
Anticipated expiration: 2020-12-20

Description

【００４６】
更に、プラントの運転・操作が成熟するにつれて、前記“基準空間”と“重要なパラメータ”はカテゴリー化出来るので、効率の良いプラント操作を達成出来る。
尚、上記で用いているマハラノビスの距離を用いる多変量解析の手法については、例えば特開平１０−１２４７６６号公報や特開２０００−４６７０１号公報に開示がある。 [0046]
Furthermore, as the driving-operation of the plant matures, the "reference space" and "critical parameter" Since coming out categories of, efficient plant operation and can be achieved.
The method of multivariate analysis using the Mahalanobis distance used above is disclosed, for example, in Japanese Patent Application Laid-Open Nos. 10-124766 and 2000-46701.

Claims

An exhaust gas measurement and monitoring system that measures and monitors the exhaust gas emitted from an incinerator that incinerates waste,
Component detection means for measuring a plurality of components contained in exhaust gas, Process variable sensors for measuring process variables such as temperature, pressure and flow rate of the incinerator, and measurement values collected from the component detection means and the process variable sensors Control equipment to monitor the status of the exhaust gas,
The management device creates a reference space by collecting information on measured values obtained from the component detection means and the process variable sensor when the incinerator is operated, and determining a Mahalanobis distance, and subsequent creation of the reference space The distance of the Mahalanobis at the time of monitoring is determined based on the measurement values from the component detection means and the process variable sensor, and the distance between the Mahalanobis at the time of monitoring and the reference space is calculated. An exhaust gas measurement and monitoring system characterized by

In the exhaust gas measurement and monitoring system according to claim 1,
The components obtained by the component detection means are calculated to be hydrocarbon substances, specific measurement substances of chlorophenols and chlorobenzenes, SOX , NOX , hydrogen chloride, carbon monoxide, carbon dioxide, oxygen, and moisture. An exhaust gas measurement and monitoring system characterized by

In the exhaust gas measurement and monitoring system according to claim 1 ,
Data collected when creating the reference space or when calculating the Mahalanobis distance when monitoring includes the temperature, gas temperature, gas pressure, gas flow rate, amount of remover introduced into the process, etc. of the electrostatic precipitator equipped in the incinerator. Exhaust gas measurement and monitoring system characterized by including operation control information of the incinerator .

In the exhaust gas measurement and monitoring system according to claim 3 ,
The exhaust gas measurement and monitoring system is characterized in that the reference space is created by the following procedure.
(1) collecting measurement value data from the component detection means and the process variable sensor, and the operation control information;
(2) Normalize the data of the item (1) with the mean value and standard deviation of each data,
(3) A two-dimensional correlation matrix is created from the data of the item (2), and further, the Mahalanobis distance from the matrix is determined, and the distribution determined by these distances is used as the reference space of the exhaust gas.

In the exhaust gas measurement and monitoring system according to claim 4 ,
An exhaust gas measurement / monitoring system characterized by comparing the distance between the reference space and the Mahalanobis at the time of monitoring and judging that the property of the exhaust gas is not changed if the distance is within a predetermined range .

In the exhaust gas measurement and monitoring system according to claim 4 ,
The distance between the reference space and the Mahalanobis at the time of monitoring is compared, and if the distance is out of a predetermined range, and if the separation degree of the distance can be determined by a metric value, the value is used as the signal level. An exhaust gas measurement / monitoring system characterized by calculating, as a feature element, only a parameter with a large contribution rate by increasing or decreasing each parameter of each measured value and operation control information as a value .

In the exhaust gas measurement and monitoring system according to claim 4 ,
The distance between the reference space and the Mahalanobis at the time of monitoring is compared, and if the distance is out of a predetermined range, the separation degree of the distance can not be determined by the metric value, but it is not within the reference space If it is obvious, calculate only the parameter that has a large contribution of its effectiveness as the feature element with respect to the separation distance of each parameter under the two level category of using each parameter and not using it. Exhaust gas measurement and monitoring system characterized by