process control Articles
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Multivariate statistical monitoring of a continuous slab caster. Proceedings American Control Conference 2002
Abstract: Principal components analysis (PCA) is a multivariate statistical (MVS) technology that can be applied in process monitoring and fault diagnosis. Dofasco has developed on-line multivariate statistical process control (SPC) monitoring systems for both its #1 and #2 continuous casters (#1CC & #2CC) based on this technology. The paper introduces the reader to the basic process of steel ...
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Simplified biofuels measurements with portable mid infrared analyzers
Product quality begins at the production facility and extends to consumer filling station. Some process control or quality verification analyses can be done with quick and simple verification tests while others require more complete tests according to the ASTM or EN approved methods. Many crucial measurements can be performed by mid-infrared (IR) analysis. These measurements include free fatty ...
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How electric control valve actuators can eliminate the problems of compressed air as a power medium
Sector: OH & gas Category: Electric actuators Products: CVA Today, a new major technological advance is available that can help control-valve users avoid many of the problems and inefficiencies associated with using compressed air as a power medium. The new solution uses electric power and eliminates dependence on compressed air. This totally electric solution is appropriate and ...
By Rotork plc
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How has Industry 1.0 to 4.0 influenced particulate emissions and monitoring - Part 1: Industry 1.0
Introduction ENVEA have been at the forefront of environmental monitoring and process control over four decades and with the emergence of the Industrial Internet of Things (Industry 4.0) ENVEA are again providing innovative solutions which harness the potential of this new industrial era. In this series of articles, we will be exploring the relationship between industrialisation and ...
By ENVEA
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Improve fed-batch fermentation by measuring mass flow
How can my fermentation process yield a more consistent product? Any biochemical process is only as consistent as the parameters that control it. What makes a fed-batch fermentation process particularly susceptible to variation is the fact that it relies on many critical parameters. With an aerobic fermentation process, temperature, pO2, substrate consumption, and pH are primary critical ...
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How to Supercharge the SmartTrak Mass Flow Controller with Compod
Streamline, simplify and save time and money by plugging the innovative Compod upgrade into the face of any SmartTrak 100 mass flow meter or controller. SmartTrak is not only a true multi-gas digital mass flow controller, it can control your process too. If you need more functionality to control a positive shutoff valve, have a pulse output, or read a pressure transmitter, that is no problem ...
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High-sensitivity, fast-response monitoring of PFC and abatement tool emissions by FTIR spectroscopy
Semiconductor fab plants are faced with real-time monitoring and reduction of their PFC emissions to meet SEMI Environmental, Health and Safety (EHS) requirements. In some cases emissions are continuous, while in other cases they are intermittent or random. Also, in-situ real-time process control is becoming a critical element of yield enhacement. Solution: FTIR Spectroscopy In-Situ ...
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Implementation of dynamic working condition seawater desalination system optimization and simulation model
Freshwater is an increasingly important research topic in the 21st century, similar to the importance of coal and oil in the 19th and 20th centuries, respectively. To expand expertise on desalination systems, this study aims to design a set of seawater desalination systems with dynamic working conditions based on the visualized development platform LABVIEW. The optimization searched for the ...
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PROTEUS-RS – Long Product Quality Optimisation through Enhancement and Utilisation of Residual Stress minimising Process Strategies - Case study
Situation: During rolling, straightening and thermal processing of long products internal stresses arise impairing the products material properties and causing material distortion due to stress relief mechanisms. The characteristics of those effects are still associated with a high degree of uncertainty. Solution: Definition of an improved process strategy and control using predictive ...
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How has Industry 1.0 to 4.0 influenced particulate emissions and monitoring - Part 2: Industry 2.0
Introduction ENVEA have been at the forefront of environmental monitoring and process control over four decades and with the emergence of the Industrial Internet of Things (Industry 4.0), ENVEA are again providing innovative solutions which harness the potential of this new industrial era. In this series of articles, we will be exploring the relationship between industrialisation and ...
By ENVEA
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Enhanced coagulation for algae removal through the control of zeta potential with diatomite
Advanced technology for more efficient treatment of algae-containing water is always needed. The feasibility of using diatomite for advanced treatment of algae-containing surface water and controlling algae removal process through zeta potential was investigated in this study. Results demonstrated that the addition of diatomite is advantageous due to reduction of the polyaluminium chloride (PAC) ...
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How has Industry 1.0 to 4.0 influenced particulate emissions and monitoring - Part 3: Industry 3.0
Introduction ENVEA have been at the forefront of environmental monitoring and process control over four decades and with the emergence of the Industrial Internet of Things (Industry 4.0), ENVEA are again providing innovative solutions which harness the potential of this new industrial era. In this series of articles, we will be exploring the relationship between industrialisation and ...
By ENVEA
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Initial conditions of urban permeable surfaces in rainfall-runoff models using Horton's infiltration
Infiltration is a key process controlling runoff, but varies depending on antecedent conditions. This study provides estimates on initial conditions for urban permeable surfaces via continuous simulation of the infiltration capacity using historical rain data. An analysis of historical rainfall records show that accumulated rainfall prior to large rain events does not depend on the return ...
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Chlorine and hydrogen chloride monitoring utilizing ion mobility spectroscopy (IMS)
ABSTRACT Increasing regulatory pressure has produced great interest in monitoring for hydrogen chloride (HCl) and chlorine (Cl2) in stacks and from other sources. Measurement of these gases has important process control implications as well1. Traditional spectroscopic methods have been used in these applications, but have not always been found to be satisfactory. This paper describes the use of ...
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BM Respirometry applied to a novel control strategy of nitrification in a wastewater biological treatment
Abstract In wastewater treatment plants, the biological nitrogen removal (BNR) has acquired critical importance, which makes that in the majority of the cases the overall process control largely depends on the control of this treatment. The normal aerobic process of nitrification is performed by specific aerobic living microorganisms and a lack of information on their bioactivity may be cause of ...
By SURCIS, S.L.
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Cheongju city Waste-to-Energy plant selects LAS 5000XD TDLS gas analyzer for ammonia slip and process control - Case Study
Industry: Incinerator in Cheongju city, South Korea Measurement: Ammonia slip control Application Cheongju city, located south of Seoul (South Korea), runs Cheongju city Public Facilities Service Corp. This incineration plant burns waste and generates heat that is used for several outputs such as: heated water for the nearby village. steam for the industrial complex. electricity for the ...
By ENVEA
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Overcoming hydrogen-bonding in on-line spectroscopy of hydrofluoric acid
Measure ppm Impurities On-line in HF Benefits Reduce - Grab Sampling, Exposure Improve - Turnaround, Precision, Process Control Challenges Materials Compatibility Unusual properties of HF Could not reproduce in laboratory Lab Instrument in plant environment Enablers Quality people at Plant, Vendors, Engineering, Lab Experimental Conditions Sampling Anhydrous HF Heat ...
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Detecting leaks through AMR data analysis
Automatic meter reading (AMR) provides real-time consumption data, enabling to collect a huge amount of information about daily, even hourly, consumptions. It is then easy to assess lost volumes on the network, using supplied volumes information. However, because of the multiple components of water losses, the metering and calculation inaccuracies, the occurrence of new (detectable) leaks is ...
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Local Exhaust Ventilation – Protecting the Worker from Exposure to Air Contaminants
If you need assistance with Local Exhaust Ventilation as discussed in this article, call us at 1- 800-344-4414 or e-mail us at info@atlenv.com for details and a free estimate. There are a variety of ways to protect a worker from exposure to an air contaminant. The best option is to eliminate contaminants!! Often this is not possible! The second option is to isolate the process from the worker ...
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Slot Injector™ Aeration System for Membrane Bioreactor (MBR) Plants
KLa Systems has recently completed our 23rd MBR aeration system project using our Slot Injector™ aeration technology. These plants are for industrial customers and although predominantly in the food & beverage sector, we have also supplied MBR aeration systems for leachate treatment, chemical and petrochemical processing effluent. Slot Injector™ aeration technology is ideal for ...
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