an expert system application to lime kiln automation in switzerland

AN EXPERT SYSTEM APPLICATION FOR LIME KILN AUTOMATION STEPHEN W HAGEMOEN PE SENIOR MEMBER IEEE Universal Dynamics Limited 10013700 International Place Richmond Canada V6V 2X8 Abstract The complex nature of the lime calcining process with its long time delays variable feed characteristics changing operating conditions nonlinear

The complex nature of the lime calcining process with its long time delays variable feed characteristics changing operating conditions and nonlinear chemical and thermal reaction rates makes the rotary lime kiln difficult to operate A lime kiln automation system that combines an expert system with adaptive loop controllers to automate kiln operation and provide significant kiln performance

Next an expert system was designed based on artificial neural network to optimize the parameters in kiln application The functions and operations of the intelligent controllers in the system were also detailed After that the designed system was adopted to predict the shell temperature and furnace oil consumption using moisture in lime mud

Kiln automation is accomplished by the skillful combination of three basic elements 1 reliable process measurements and actuators In order to bring more consistency and better control in the lime kiln operation advance control strategies are required to counteract The expert system application is usually the last step or at least a

Model predictive control with soft constraints with application to lime kiln control Computer and Chemical Engineering v23 791806 Google Scholar Zeman 2008 Effect of steam hydration on performance of lime sorbent for CO2 capture International journal of greenhouse gas control v2 203209 Google Scholar

At Ozarow the Expert Optimizer will be installed on the kiln cooler and calciner The kiln is 99 m long and has a diameter of 575 m making it one of the largest cement kilns in Europe The plant is already using a range of alternative fuels and one of the motivations for installing the Expert Optimizer is to increase their use

Cement and glass makers need integrated process control systems that can improve plantwide efficiency and productivity Our awardwinning process control solutions provide easy “single window” access to the process production quality and business information – from the most remote location to corporate headquarters They can be supplied by ABB’s global network of skilled control

Jul 01 1999 · In the field survey the lime kiln operation was studied in order to gather detailed knowledge about the kiln process This paper also describes the intelligent lime kiln control system Alhich were designed based on the gathered knovledge as vell as the results achieved during the longterm testing period at the plant 2

Alternative fuels will remain under operator control while stability is brought to the process by Expert Optimizer controlling the master fuels Commissioning of the system started at the end of May 2010 Expert Optimizer part of ABB’s CPM Minerals suite of solutions ensures that the kiln is operated under optimum conditions according

Nov 01 2011 · Highlights The expert system developed in this study provides assessment and decisionmaking support for kiln process management After the system was put into operation the output of the lime shaft kiln is increased by 25 The concentration of carbon dioxide in the flue gas is increased by 10 The decomposition rate of limestone is increased by 6 The coke ratio decreased by 20

An expert system application for lime kiln automation Pulp and Paper Industry Technical Conference Annual S W Hagemoen Mathematical Modeling and Computer Control of Lime Kilns

An expert system application for lime kiln automation Clarifiers to quick lime or calcium oxide a typical kiln installation is shown in figure 1 it consists of a mud filter where the moisture content is reduced to about 30 to 35 a rotary kiln and dust collector the kiln itself expert system applicati

more stable lime is the important quality measure determining the efficiency of the kiln to the improved kiln stability and freelime standard deviation the freelime target can now be increased from 1 to 15which allows a total improvement in energy used per

innovative automation solutions that enhance the production capabilities of customers’ plants History For 40 years FLSmidth has been a pioneer in highlevel expert control systems for cement applications ECSProcessExpert is a development of ECSFuzzyExpert which was the first expert system engineering platform in the cement industry It is

Actuators are kiln speed energy input fuels air and feed while the process parameters to be controlled are temperature in the kiln front or specially built soft sensor thereof temperature at the kiln inlet and oxygen in the gasses traveling through the system

Company website ABB Switzerland Ltd ABB is a global leader in providing stateofthe art technology to cement producers The company’s worldwide strong local presence provides complete support through the lifecycle of an installation – including engineering training commissioning service and support – every day of the year

An Expert System Application For Lime Kiln Automation An expert system application for lime kiln automation stephen w hagemoen pe senior member ieee universal dynamics limited 10013700 international place richmond canada v6v 2x8 abstract the complex nature of the lime calcining process with its long time delays variable feed characteristics

Metso is the worlds leading supplier of preheater rotary kiln lime calcining systems Metsos preheater rotary kiln systems produce the highest quality lime with the widest range of stone feed size Preheater rotary kiln systems can use gas oil or coal

Nault G Maltais D 1997 Application of an online expert system to optimize dryers and press section at Domtar Pulp Pap Canada 98 12 111–113 Google Scholar

Lime kiln models were also included in a steadystate flowsheet simulation package Later sensorbased applications and an expert system application for lime kiln control are reported In the beginning of 90s good results have also been gained by using fuzzy logic control in an industrial rotary lime kiln FLC was originally implemented in

Rotary Kiln Erection An Expert System Application for Lime Kiln Automation Andritz sometimes conflicting operating methods that prevent The rotary lime kiln is a major component of the kraft pulp typical kiln installation is shown in Figure 1 Read More

A lime quarry processes 8 million tons of limestone from four rotary kilns and six shaft kilns Product is stored in surge bins and transported by conveyor belt scales Entire refining and transport process is monitored by SIMATIC PCS 7 route control software