INTELIGENT PROCESS CONTROL SYSTEM IN CEMENT INDUSTRY
Main researcher
: JURIŠIĆ-ZEC, MARICA (19422) Assistants
ŽIŽIĆ, PETAR (147106)
MIMICA, STANKO (41483)
GRUBIŠIĆ, BLAŽ (41393)
CARIN, VLADIMIR (106516)
HALLE, RADOVAN (106505)
Type of research: applied Duration from: 01/01/91. to 12/31/93. Papers on project (total): 5
Institution name: Fakultet elektrotehnike i računarstva, Zagreb (36) Department/Institute: Department of automatic control and computer engineering in automation Address: 41000 Zagreb, Unska 17, City: 10000 - Zagreb, Croatia
Communication
E-mail: zec@auss1.rasip.etf.hr
Phone: 385 (0)1 6129-795
Phone: 385 (0)1 278-571
Summary: The overall cement production process, from raw material
excavation site up to clinker workshop, have to be decentralized and
hierarchycaly optimally controlled. On the lowest process level the
mathematical model for every single process unit has to be proved, the
identification procedures and optimal control criteria for each process
operation have to be examined and tested. The results from previous
researches, with real data improved mathematical models of some process
unit, will be implemented in project too. The overall production process
control strategy has to be installed on the coordination level of control
system. The highest control level, the organisation level, will
implement methodology, tools and techniques for managing cement production
with continuous improvement in quality and productivity. Optimal control
of usage the raw material excavation site. Mathematical modelling of raw
material base, comparative estimate of deterministic and stochastic
procedures, the choice of criteria and methods for results validation.
Dynamic analysis of clinker kiln process. The theoretical and experimental
mathematical model. The selection and application of some approximation
methods in the order model reduction procedures. Project CEMTIS, software
for decentralized and hierarchycal computer control in cement production.
The implementation and coordination of control procedures of all process
operation units, design of relevant data bases.
Keywords: Cement, Cement stone, Oil well cement, Cement production, output quality and energy consumption, ecological problems, computer process control, optimal control, decentralised control, hierarchycal control, mathematical modelling, estimation, identification, model order reduction, software for process control, on-line real-time process control.
Research goals: Study addresses application of modern theoretical
methods, and by using SW development tools, in development of computer
based control system for cement production, that integrates better quality
control, less energy consumption, reduction of raw material usage and
lower environment polution. Project consists of 4 elements integrated in
the development process: A. Control of raw material excavation site
and blending process A.1 Mathematical model of raw material
base * A.2 Mathematical model of primary blending process A.3
Optimalization of raw material blending process B. Raw material
grinding and composition process control * B.1 Mixing model in raw
material grinding process * B.2 Math. model of finaly homogenisation *
B.3 Math. model of raw material composition * B.4 Optimalization of raw
material composition C. Clinker kiln system control * C.1 Clinker
kiln process modelling * C.2 Heat exchange system model C.3 Rotary
kiln system modelling * C.4 Clinker cooler system model C.5
Optimalization of clinker kiln system D. Overall clinker production
process control D.1 Properties of overall clinker production process
model D.2 Properties of production process control model D.3
Production process control decomposition and design of
decentralised and hierarchycal computer process control To achieve
necessary results efforts are not primarily in selection of appropriate
computerised system, but also in understanding technological process
characteristics, modern production techniques, high complexity and variety
of problems that require multidisciplinary expertise, experience in usage
of diverse CASE tools applied. Expected benefits of this study : a)
Enhancing system understanding; development of neccesary mathematical
models, criteria and control algorithms for single process unit or
technique. b) Standardised approach to design and implementation
methodologies, to become universal to computer process control in chemical
and process industry. c) Application, testing and adaptation of computer
aided tool support and new SW engineering methodologies in design and
implementation of computer process control (CAD, CAE, KBS, simulation and
programming languages and packages). d) Design and development of specific
system for computer control in cement industry. Successful implementation
of above results could set a frame workfor standard methodology in
designing control systems in chemicaland process industry. (* indicates
subprojects accomplished in earlier phases of research activities.)
COOPERATION - INSTITUTIONS
Name of institution
: Dalmacijacement Type of institution: Economical/Production Type of cooperation: Joint project City: Solin, Hrvatska
Name of institution
: CEMTRA d.o.o. Type of institution: Other Type of cooperation: Joint project City: 10000 - Zagreb, Croatia Other information about the project.