Intro to Products
C4 RAFFINATE-1
This is a colorless gas at ambient temperature and atmospheric pressure made from remaining mixture after separating 1,3-butadiene from mixed C4 produced in the ethylene plant (NCC).
CAS number : - / Molecular formula : Mixture
Plant processes
C4 Raffinate is the remaining mixture following the extraction of 1,3-Bitadene from Mixed C4, and utilized as the raw material for MTBE and polybutene plant.
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- First Extractive Distillation Unit
- This unit fractionates acetylenes, that dissolve well in DMF (Dimethyl Formamide), an extractant, among mixed C4, butane that does not dissolve in BD, and C4 Raffinate-1 containing butene.
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- Second Extractive Distillation Unit
- This unit uses the extractant (DMF) to fractionate crude BD and acetylene from the BD and acetylenes fractionated along with solvents in the first extractive distillation unit.
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- BD Fractionation Unit
- This unit produces high-purity 1,3-butadiene in the two continuous separation columns using the differences in boiling points. Light acetylene is recovered as Off Gas and used as fuel, while heavy butene-2 and acetylene are fractionated as C4 Raffinate-2.
Product uses
Utilized as the raw material for MTBE and polybutene plant.
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MTBE Plant
Product inquiry
| Product Speciality | Contact person | Phone number | Inquiry |
|---|---|---|---|
| C4 RAFFINATE-1 | Park Sun-chang | 82-2-6370-5412 | Mail inquiry |
Properties
C4 RAFFINATE-1
| Test Item | Unit | Test Method | Specification |
|---|---|---|---|
| C3'S & LIGHTER | M-% | ASTM D 2163 | MAX 0.3 |
| BUTADIENE | M-% | ASTM D 2163 | MAX 0.6 |
| C4'S | M-% | ASTM D 2163 | RECORD |
| BUTENE-1 | M-% | ASTM D 2163 | RECORD |
| ISOBUTENE | M-% | ASTM D 2163 | RECORD |
| C5' S & HEAVIER | M-% | ASTM D 2163 | MAX 0.3 |
| ACETYLENES | M-% | ASTM D 2163 | MAX 0.1 |
| DMF or NMP | Wt-ppm | BY GC | MAX 10 |
| T-SULFUR | Wt-ppm | ASTM D 6667 | MAX 10 |
| WATER | - | VISUAL | NO FREE WATER |
* The above specifications represent standards may differ from the actual subject matter.