Journal of Failure Analysis and Prevention

, Volume 16, Issue 5, pp 738–746 | Cite as

The Study of Performance in a Novel Gas–Solid Separator

Technical Article---Peer-Reviewed
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Abstract

The three slit-type separator is a new separator which can shorten the residence time of oil & gas and improve the separation efficiency. In this study, a critical validation was carried out to examine the separation performances of the three slit-type separator with different inlet velocity and inlet concentration. According to the experimental results, the separation efficiency and pressure drop of the three slit-type separator increase with the increase of inlet velocity and inlet concentration. Numerical simulation of the gas–solid flow field in the three slit-type separator was carried out by the use of Fluent 15.0 platform. The simulated results coincide with the experimental results. The particles move along the inside wall of the separator in the vaulted space, meanwhile, more gas enters into the exhaust pipe through slots, which can improve the separation efficiency. The study shows that the residence time of oil and gas is less than 0.6 and the separation efficiency is up to 99% in the separator, in addition, the pressure drop could be controlled in 4 kPa below.

Keywords

Gas–solid separator Flow field Numerical simulation Experimental research 

List of Symbols

ci

Entrance dust concentration (kg/m3)

cε1, cε2

Constant

DH

Hydraulic diameter of rectangular inlet cross section (m)

dp

Particle diameter (m)

gi

Acceleration of gravity (m/s2)

Gk

Turbulence generated item (kg/ms3)

h

Height (m)

I

Turbulence intensity

k

Fluid turbulent kinetic energy (m2/s2)

L

Length (m)

m

Quality (kg)

l

Turbulence characteristic length (m)

P

Fluid pressure (N)

Pii, Pij

Source term generation entry

r

Central tube radius (m)

R

Splitter shell radius (m)

Re

Reynolds

Sψ

Source term

T

Absolute temperature (K)

t

Time (s)

ut

Tangential velocity (m/s)

ur

Radial velocity (m/s)

ui, uj

Fluid velocity in the \(i\), \(j\) direction(m/s)

\({\bar{{u}}}_{\text{i}},\;{\bar{u}}_{\text{j}}\)

Average fluid velocity in the \(i\), \(j\) direction (m/s)

ui′,uj

Fluid velocity ripple in the \(i\), \(j\) direction (m/s)

ui

Inlet velocity (m/s)

x, y, z

General coordinate (m)

ε

Turbulent kinetic energy dissipation rate (m2/s3)

εij

Viscous dissipation term

ψ

Universal variable

ρ

Fluid density(kg/m3)

μt

Effective viscosity coefficient(Pa s)

φij

Source term generation entry

гφ

Diffusivity (m2/s)

σk, σε, σφ

Constant corresponding equations

к

Von Karman constant

Notes

Acknowledgment

The authors acknowledge the financial support by MOE Key Laboratory of “oil and gas equipment” open projects (X151514KJD10).

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Copyright information

© ASM International 2016

Authors and Affiliations

  1. 1.State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijingChina
  2. 2.School of Mechanical EngineeringSouthwest Petroleum UniversityChengduChina

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