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C4 Cut: Valorization Routes

C4 Cut: Valorization Routes

2 days
PCH/C4CUT-E
Sessions
This course is not scheduled.
Who should attend?

Audience

    • Anyone involved in C4 cut treatment from operating staff to traders.

Level

  • Foundation
  • This course provides a better understanding of the different routes to upgrade a raw C4 cut coming out a steam cracker.
Learning Objectives
  • Upon completion of the course, the participants will be able to:
  • quote the differences among the hydrocarbon of the C4 cut,
  • list the economic interests,
  • precise the role of the separation and transformation processes implemented in the C4 cut treatment.
Course Content

ORIGIN & ECONOMICS OF THE C4 CUT

0.25 day

  • Simplified scheme of C4 cut production.
  • Standard composition of the C4 cut: hydrocarbon nature, typical concentration depending on the severity of the source process.
  • Main uses of the C4 hydrocarbons.

UPGRADING SCHEMES

0.25 day

  • Several options.
  • How to select the right one.

1,3-BUTADIENE RECOVERY

1 day

  • Comparison of standard distillation conditions and extractive distillation.
  • Constraints of an extractive distillation process. Solutions available to tackle the issues.
  • Case based on a pre-feed hydrogenation treatment of the extractive distillation.
  • Principle of the implementation of the selective hydrogenation and limitation of the treatment - Consequences.
  • Configurations available: extractive distillation in 1 step or in 2 steps.
  • 1-3 butadiene on specification - Superfractionation.

RAFFINATE-1 TREATMENT - UPGRADING OF ISOBUTENE

0.25 day

  • Several options- How to select the right one.
  • MTBE or ETBE production scheme. Process characteristics.

RAFFINATE-2 TREATMENT - UPGRADING OF BUTENES

0.25 day

  • Several options - How to select the right one.
  • 1-butene and 2-butenes production schemes.
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Ways & Means
  • Notions illustrated thanks to some pictures.