The document describes a butene plant that will produce butene-1 for use as a comonomer in polyethylene production. The plant will use a single line principle reactor with a capacity of 35 KTA to produce polymer-grade butene-1 liquid product through a dimerization process using ethylene, a catalyst, triethylaluminum and solvent at mild operating conditions between 50-53 degrees Celsius and low pressure. The plant is designed to operate for 7,200 hours per year with a 50% turn down ratio.

1. ONGC Petro Additions Limited
BUTENE PLANT
ONGC Petro-Additions Limited

2. 2
ONGC Petro Additions Limited
Process Overview
OPaL Process Design Brief
Process Flow Diagram
Process Description
Catalyst & Chemicals

3.  Butene-1 is being used as Co monomer in Poly Ethylene
Process
 The Butene-1 Plant is designed to produce Butene-1 (Polymer
grade) required for downstream polyethylene Plant (LLDPE/
HDPE & Dedicated HDPE ).
 It would also produce some by-product, while producing
Butene-1 product.
 Mild operating conditions (low temperature 50 – 53 deg C,
low operating pressure)
ONGC Petro Additions Limited
OBJECTIVE

4. 4
ONGC Petro Additions Limited
Capacity • 35 KTA
Technology
Licensor
• Axens
Technology
Name
• Alpha butol
PMC
• Engineers India Limited
EPC
• To be decided
Reactor • Single Line Principle
Operating
Hours
• 7200 per Year
Turn Down
Ratio
• 50%
Product
Capability
• Polymer Grade Butene
Product
Form
• Liquid
Ethylene
Solvent
Catalyst
TEAL
Dimerization
Butene-1

5. ONGC Petro Additions Limited
PROCESS FLOW DIAGRAM

6. ONGC Petro Additions Limited
PROCESS STEPS
Ethylene Purification
Reaction
Co-catalyst injection
Catalyst Removal
Distillation

7. ONGC Petro Additions Limited
Catalyst & Chemicals
Ingoing Streams
• Ethylene
• Catalyst LC 2253
• Tri Ethyl Aluminum (TEA)
• N- Hexane
• Amine
Outgoing Streams
• Butene-1
• C6+ Streams (Oligomers)
• Spent Catalyst

8. ONGC Petro Additions Limited
Any Questions ??
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