Page 36 - Impiantistica Italiana Maggio Giugno 2014

To further extend emission monitoring service factor services both in the design/implementation stage
in the last few months a sophisticated PEMS has and in the crucial post-commissioning maintenance
been successfully added on three different units. phase will be ever more decisive in order to select
The predictive system, based on latest generation the most proftable and effective analytical solution
neural network technology, runs in parallel to the and reliable business partner.
hardware analyzers validating its results, detecting Reprinted with permission from Hydrocarbon
possible malfunctions and providing and highly Processing, October 2013 (all right reserved)
effective surrogate when the CEMS has to be
stopped for maintenance or for any unforeseen
shut-down procedure.
References
Conclusions [1] Continuous Emission Monitoring Systems for Non-
criteria Pollutants - EPA Handbook, August 1997
Under the pressure of increasingly stringent [2] Jahnke A.: Continuous Emission Monitoring - John
environmental regulations, CEMS/AMS are Wiley and Sons, Inc. 2000
nowadays essential for process industry day-by- [3] Emission Monitoring Systems Worldwide Outlook –
day operation. Although market surveys forecast ARC Advisory Group Report, 2012
a consistent growth in the next years [3], some [4] http://chemwiki.ucdavis.edu/Physical_Chemistry/
key factors could contribute to shape the future of Spectroscopy/Vibrational_Spectroscopy/Infrared_
CEMS. Spectroscopy/How_an_FTIR_Spectrometer_
From an application perspective, while the Operates
underlying technology could be considered mature [5] Bonavita N., Callero F.: Model Based Emission
for gases like SO , CO , NO , O and particulate, Monitoring - ABB Review 3/11,2011, pp. 58-63
2
x
2
x
opportunities and needs for improvement exist [6] Bonavita N., Formenton A., Pavan E.: Inferential
for acid gases, organic compounds and metals Modeling for Environmental Applications – The
(with particular emphasis on mercury). Together Predictive Emission Monitoring Approach - ABB
with the emergence of PEMS as an alternative or White Paper, 2005
a complement to hardware analyzers these will [7] Arioni E.: Proteggere la Terra monitorando le
probably be the main evolution areas. Moreover the emissioni – Chimica e Ambiente, n. 2, marzo/aprile
capability to provide timely and effective professional 2013, pp. 32-34

Sistema di controllo in continuo

delle emissioni

Acquisire dati appropriati, affdabili e tempestivi è una condizione essenziale per il controllo della
situazione ambientale e per l’approntamento degli opportuni interventi correttivi. Attualmente il sistema
più effciente per la rilevazione strumentale e la gestione in continuo di dati ambientali è il CEMS
(Continuous Emission Monitoring System), noto anche come AMS (Automated Measuring System).
Il sistema consente già di rilevare in modo continuo, effciente e affdabile la presenza di numerosi
gas. Questo articolo evidenzia le possibilità applicative di questo sistema soprattutto nell’ambito
dell’impiantistica industriale e i suoi possibili sviluppi tecnologici.

32 Impiantistica Italiana - Maggio-Giugno 2014