Hydrodynamic Studies in Fischer-Tropsch Derived Waxes in A Bubble Column

Dragomir B. Bukur, Snehal A. Patel, Raphael Matheo

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Gas hold-up and Sauter mean bubble diameter measurements were made in a 0.051 m diameter by 3 m long glass bubble column in the system, nitrogen-molten wax, with three different waxes (paraffin wax FT-300, Sasol’s Arge wax and Mobil’s reactor wax). Paraffin wax has a tendency to foam and gas hold-up is a strong function of gas distributor type, temperature and start-up procedure, whereas the reactor waxes do not foam and are much less affected by these variables. In experiments at 265&C with a 1.85 mm single hole orifice plate distributor the gas hold-ups were nearly the same for all three waxes. However, significant differences in Sauter mean bubble diameters were obtained in experiments with different waxes; FT-300 wax produced the smallest Sauter mean bubble diameters whereas Mobil’s reactor wax produced the largest bubbles. Addition of 1-octadecanol and octadecanoic acid (up to 10wt%) to the FT-300 paraffin wax caused an increase in gas hold-up and a delav in the foam break-un in runs at 265°C with the 1.85 mm orifice nlate distributor.

Original languageEnglish
Pages (from-to)63-78
Number of pages16
JournalChemical Engineering Communications
Volume60
Issue number1-6
DOIs
Publication statusPublished - 1987
Externally publishedYes

Fingerprint

Paraffin waxes
Bubble columns
Waxes
Hydrodynamics
Gases
Foams
Orifices
Bubbles (in fluids)
Molten materials
Experiments
Nitrogen
Glass
Acids

Keywords

  • Bubble column
  • Fischer-Troosch synthesis
  • Gas hold-uo _
  • Sauter bubble diameter

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Hydrodynamic Studies in Fischer-Tropsch Derived Waxes in A Bubble Column. / Bukur, Dragomir B.; Patel, Snehal A.; Matheo, Raphael.

In: Chemical Engineering Communications, Vol. 60, No. 1-6, 1987, p. 63-78.

Research output: Contribution to journalArticle

Bukur, Dragomir B. ; Patel, Snehal A. ; Matheo, Raphael. / Hydrodynamic Studies in Fischer-Tropsch Derived Waxes in A Bubble Column. In: Chemical Engineering Communications. 1987 ; Vol. 60, No. 1-6. pp. 63-78.
@article{d72e78c5b9b444c28c61a543caac523e,
title = "Hydrodynamic Studies in Fischer-Tropsch Derived Waxes in A Bubble Column",
abstract = "Gas hold-up and Sauter mean bubble diameter measurements were made in a 0.051 m diameter by 3 m long glass bubble column in the system, nitrogen-molten wax, with three different waxes (paraffin wax FT-300, Sasol’s Arge wax and Mobil’s reactor wax). Paraffin wax has a tendency to foam and gas hold-up is a strong function of gas distributor type, temperature and start-up procedure, whereas the reactor waxes do not foam and are much less affected by these variables. In experiments at 265&C with a 1.85 mm single hole orifice plate distributor the gas hold-ups were nearly the same for all three waxes. However, significant differences in Sauter mean bubble diameters were obtained in experiments with different waxes; FT-300 wax produced the smallest Sauter mean bubble diameters whereas Mobil’s reactor wax produced the largest bubbles. Addition of 1-octadecanol and octadecanoic acid (up to 10wt{\%}) to the FT-300 paraffin wax caused an increase in gas hold-up and a delav in the foam break-un in runs at 265°C with the 1.85 mm orifice nlate distributor.",
keywords = "Bubble column, Fischer-Troosch synthesis, Gas hold-uo _, Sauter bubble diameter",
author = "Bukur, {Dragomir B.} and Patel, {Snehal A.} and Raphael Matheo",
year = "1987",
doi = "10.1080/00986448708912010",
language = "English",
volume = "60",
pages = "63--78",
journal = "Chemical Engineering Communications",
issn = "0098-6445",
publisher = "Taylor and Francis Ltd.",
number = "1-6",

}

TY - JOUR

T1 - Hydrodynamic Studies in Fischer-Tropsch Derived Waxes in A Bubble Column

AU - Bukur, Dragomir B.

AU - Patel, Snehal A.

AU - Matheo, Raphael

PY - 1987

Y1 - 1987

N2 - Gas hold-up and Sauter mean bubble diameter measurements were made in a 0.051 m diameter by 3 m long glass bubble column in the system, nitrogen-molten wax, with three different waxes (paraffin wax FT-300, Sasol’s Arge wax and Mobil’s reactor wax). Paraffin wax has a tendency to foam and gas hold-up is a strong function of gas distributor type, temperature and start-up procedure, whereas the reactor waxes do not foam and are much less affected by these variables. In experiments at 265&C with a 1.85 mm single hole orifice plate distributor the gas hold-ups were nearly the same for all three waxes. However, significant differences in Sauter mean bubble diameters were obtained in experiments with different waxes; FT-300 wax produced the smallest Sauter mean bubble diameters whereas Mobil’s reactor wax produced the largest bubbles. Addition of 1-octadecanol and octadecanoic acid (up to 10wt%) to the FT-300 paraffin wax caused an increase in gas hold-up and a delav in the foam break-un in runs at 265°C with the 1.85 mm orifice nlate distributor.

AB - Gas hold-up and Sauter mean bubble diameter measurements were made in a 0.051 m diameter by 3 m long glass bubble column in the system, nitrogen-molten wax, with three different waxes (paraffin wax FT-300, Sasol’s Arge wax and Mobil’s reactor wax). Paraffin wax has a tendency to foam and gas hold-up is a strong function of gas distributor type, temperature and start-up procedure, whereas the reactor waxes do not foam and are much less affected by these variables. In experiments at 265&C with a 1.85 mm single hole orifice plate distributor the gas hold-ups were nearly the same for all three waxes. However, significant differences in Sauter mean bubble diameters were obtained in experiments with different waxes; FT-300 wax produced the smallest Sauter mean bubble diameters whereas Mobil’s reactor wax produced the largest bubbles. Addition of 1-octadecanol and octadecanoic acid (up to 10wt%) to the FT-300 paraffin wax caused an increase in gas hold-up and a delav in the foam break-un in runs at 265°C with the 1.85 mm orifice nlate distributor.

KW - Bubble column

KW - Fischer-Troosch synthesis

KW - Gas hold-uo _

KW - Sauter bubble diameter

UR - http://www.scopus.com/inward/record.url?scp=0002416208&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0002416208&partnerID=8YFLogxK

U2 - 10.1080/00986448708912010

DO - 10.1080/00986448708912010

M3 - Article

VL - 60

SP - 63

EP - 78

JO - Chemical Engineering Communications

JF - Chemical Engineering Communications

SN - 0098-6445

IS - 1-6

ER -