Polyethylene and Polypropylene Production
إنتاج البولي إيثيلين والبولي بروبيلين
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- Available in-house
- Fees from
- —per delegate
- Formats
- In-house training0 sessions
- Duration
- 5 daysCertificate
Overview
Polyethylene and polypropylene are the most widely produced plastics in the world and a major source of value for petrochemical producers in the Middle East and beyond. Their production combines monomer purification, catalyst systems, polymerisation reactors, powder and pellet handling, extrusion and product finishing, all controlled to deliver grades that meet demanding customer specifications. Small changes in catalyst, reactor conditions or additive packages can shift product properties, while fouling, sheeting, extruder problems and dust hazards can reduce output and create serious safety risks in the plant.
This course provides a practical understanding of polyethylene and polypropylene production from monomer to finished pellets. Participants learn polymer fundamentals, the main product families such as LDPE, LLDPE, HDPE and polypropylene homopolymers and copolymers, and how molecular structure determines properties. The course covers Ziegler-Natta, chromium and metallocene catalysts, gas-phase, slurry, loop and high-pressure processes, and the control of melt index, density and molecular weight distribution. It also explains degassing, powder handling, additives, extrusion and pelletising, quality control testing, grade transitions, dust explosion and process safety, and troubleshooting of common operating and product quality problems.
Objectives
- Explain polymer structure and how it determines polyolefin properties
- Compare the main polyethylene and polypropylene product families and uses
- Describe catalyst systems and their effect on product performance
- Compare gas-phase, slurry, loop and high-pressure production processes
- Operate degassing, powder handling, extrusion and pelletising sections
- Apply quality control tests and manage grade transitions effectively
- Recognise dust explosion and process hazards and troubleshoot problems
Who should attend
Polymer plant operators and supervisors, process and quality engineers, laboratory staff, technical service and marketing staff in polyolefin businesses.
Training methodology
The course combines explanation of polymer science and process technology with real flow diagrams, operating data, laboratory results and product data sheets. Participants link reactor conditions and catalyst choices to product properties, interpret melt index, density and mechanical test results, and plan grade transitions to reduce off-grade material. Extruder data and pellet defects are analysed to identify their causes. Videos and samples of powder, pellets and films support learning. Case studies of reactor sheeting, dust explosions and customer complaints are analysed in groups, and each day ends with a short quiz.
Programme outline
Day1Polymer Fundamentals and Products
- Polymers, monomers and the main characteristics that make polyolefins so widely used
- Molecular weight, its distribution, branching and crystallinity and their effect on properties
- LDPE, LLDPE and HDPE: structure, properties and typical applications in the market
- Polypropylene homopolymers, random copolymers and impact copolymers and their uses
- Melt index, density and other key specifications that customers require from producers
- Processing methods used by customers: film blowing, injection moulding, blow moulding and pipe
- Practical exercise: matching product grades to applications using product data sheets
Day2Catalysts and Polymerisation Processes
- Monomer and comonomer purification and the poisons that reduce catalyst activity
- Ziegler-Natta catalysts, cocatalysts and donors used in polyethylene and polypropylene
- Chromium and metallocene catalysts and the special product properties they provide
- Gas-phase fluidised bed processes and their use for polyethylene and polypropylene
- Slurry, loop and bulk processes and the main features of each technology
- High-pressure tubular and autoclave processes for LDPE and ethylene copolymers
- Practical exercise: linking catalyst and reactor conditions to changes in product properties
Day3Reactor Control and Grade Transitions
- Controlling melt index with hydrogen and density with comonomer in the reactor
- Reactor temperature, pressure and residence time and their effect on productivity
- Catalyst productivity, residues and their effect on product quality and colour
- Fouling, sheeting and chunk formation in reactors and how operators can prevent them
- Planning grade transitions to minimise off-grade production and lost reactor time
- Advanced process control and quality prediction models in polyolefin plants
- Practical exercise: planning a grade transition and estimating the off-grade quantity
Day4Finishing, Extrusion and Quality Control
- Powder degassing, residual hydrocarbon removal and safe powder handling systems
- Additives such as antioxidants, slip agents, antistatics and nucleating agents
- Extruders, gear pumps, screen changers and underwater pelletisers in finishing lines
- Common extruder problems: gels, black specks, fines, pellet shape and moisture
- Laboratory quality control tests, sampling plans and product release procedures
- Bagging, silos, blending and the prevention of product contamination during storage and loading
- Practical exercise: diagnosing pellet and film defects from laboratory and extruder data
Day5Safety, Reliability and Troubleshooting
- Dust explosion hazards in powder handling, silos and conveying systems
- Static electricity, purging and the safe handling of flammable hydrocarbons in polymer plants
- Reactor runaway, kill systems and other process safety issues in polyolefin units
- Reliability of compressors, extruders, rotary valves and other critical equipment in polymer plants
- Handling customer complaints and linking field problems back to plant operation
- Group exercise: troubleshooting a reactor with sheeting and rising off-grade production
- Final assessment and discussion of operating issues at participants' own plants
Dates and fees
There are no scheduled dates for this course at the moment. Request it as in-house training, or ask us about the next date.
Certificate
Every delegate who attends the full programme receives a Harfard Technology certificate of completion stating the course title, duration, dates and venue.
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