scholarly journals Micro-Bubble Generating Properties on Gas/Liquid Flow Rate Ratio with the Sludge Flotation/Thickening Apparatus

2014 ◽  
Vol 23 (1) ◽  
pp. 97-104
Author(s):  
Chang-Han Lee ◽  
Jong-Won Park ◽  
Kab-Hwan Ahn
Keyword(s):  
Flow Rate ◽  
Liquid Flow ◽  
Rate Ratio ◽  
Liquid Flow Rate ◽  
Flow Rate Ratio ◽  
Micro Bubble ◽  
Gas Liquid Flow ◽  
Sludge Flotation

Determination of Entrained Fraction in Vertical Annular Gas/Liquid Flow

1999 ◽  
Vol 122 (1) ◽  
pp. 146-150 ◽  
Author(s):  
Barry J. Azzopardi ◽  
Sohail H. Zaidi
Keyword(s):  
Flow Rate ◽  
Liquid Flow ◽  
Annular Flow ◽  
Flow Model ◽  
Liquid Flow Rate ◽  
Measured Concentration ◽  
Diameter Pipe ◽  
A New Technique ◽  
Gas Liquid Flow

A new technique for the measurement of drop concentration in annular gas/liquid flow is presented. This is based on scattering of light by the drops. From the measured concentration, entrained liquid flow rate and thence the entrained fraction can be determined. The technique has been employed to obtain new data for vertical upward annular flow in a 0.038 m diameter pipe. The results have been compared with data from different pipe diameters and with the predictions of an annular flow model. [S0098-2202(00)02201-X]

Heat Transfer in Liquid-Coupled Indirect Heat Exchanger Systems

1975 ◽  
Vol 97 (4) ◽  
pp. 499-503 ◽  
Author(s):  
R. B. Holmberg
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Flow Rate ◽  
Liquid Flow ◽  
Rate Ratio ◽  
Liquid Flow Rate ◽  
Coupled System ◽  
Heat Transfer Area ◽  
Cold Side ◽  
Total Heat Transfer

The theory of liquid-coupled indirect heat exchanger systems has been studied to ascertain optimum criteria with respect to the coupling-liquid flow rate and the distribution of total heat transfer area between the hot-side and cold-side exchanger units in the case of counterflow arrangement. The optimum coupling-liquid capacity rate is derived and given as a function of the over-all capacity rate ratio and the Ntu ratio between the two exchanger units. For this optimum liquid capacity rate together with the proposed over-all number of transfer units, it is shown that the over-all heat transfer effectiveness of the liquid-coupled system can be expressed in the ordinary form for individual exchanger units in true counterflow.

Ozonation of 2-Chlorophenol in Aqueous Solution in a Novel Rotating Packed Contactor

2014 ◽  
Vol 17 (1) ◽  
Author(s):  
Young Ku ◽  
Chia-Ying Wu ◽  
Wei-Ming Hou
Keyword(s):  
Decomposition Rate ◽  
Rate Ratio ◽  
Liquid Flow Rate ◽  
Packed Bed ◽  
Flow Rate Ratio ◽  
Rotor Speed ◽  
Operational Conditions ◽  
Rotating Packed Bed ◽  
Gas Liquid Flow ◽  
Ozonation Process

AbstractA modified rotating packed contactor was designed and evaluated for the mass transfer of ozone and the ozonation efficiency of 2-chlorophenol under various operational conditions. The rotating packed contactor was composed of an immobilized disc and a rotating packed disc. Both the overall ozone transfer coefficient and decomposition rate of 2-chlorophenol by ozonation process in the modified rotating packed bed were enhanced with increasing rotor speed or decreasing gas/liquid flow rate ratio. The decomposition rate of 2-chlorophenol was accelerated by increasing H

Research on Gas-liquid Flow Rate Optimization in Foam Drilling

2010 ◽  
Author(s):  
B. K. Gao ◽  
D. G. Sun ◽  
Z. G. Jia ◽  
Z. Q. Huang ◽  
Liejin Guo ◽  
...  
Keyword(s):  
Flow Rate ◽  
Liquid Flow ◽  
Liquid Flow Rate ◽  
Gas Liquid Flow ◽  
Rate Optimization ◽  
Foam Drilling

scholarly journals S083014 Influence of gas-liquid flow rate on flow structure in a venturi scrubber

2013 ◽  
Vol 2013 (0) ◽  
pp. _S083014-1-_S083014-5
Author(s):  
Naoki HORIGUCHI ◽  
Hiroyuki YOSHIDA ◽  
Shin-ichiro UESAWA ◽  
Akiko KANEKO ◽  
Yutaka ABE
Keyword(s):  
Flow Structure ◽  
Flow Rate ◽  
Liquid Flow ◽  
Liquid Flow Rate ◽  
Venturi Scrubber ◽  
Gas Liquid Flow

scholarly journals Gas–Liquid Flow Rate Measurement Using a Twin-Plane Capacitive Sensor and a Venturi Meter

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 135933-135941 ◽  
Author(s):  
Aluisio Do N. Wrasse ◽  
Dalton Bertoldi ◽  
Eduardo N. Dos Santos ◽  
Rigoberto E. M. Morales ◽  
Marco J. Da Silva
Keyword(s):  
Flow Rate ◽  
Liquid Flow ◽  
Liquid Flow Rate ◽  
Capacitive Sensor ◽  
Twin Plane ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Gas Liquid Flow

Investigation of Gas-Liquid Flow Using Electrical Resistance Tomography and Wavelet Analysis Techniques for Early Kick Detection

2021 ◽  
Author(s):  
Abinash Barooah ◽  
Muhammad Saad Khan ◽  
Mohammad Azizur Rahman ◽  
Abu Rashid Hasan ◽  
Kaushik Manikonda ◽  
...  
Keyword(s):  
Flow Rate ◽  
Liquid Flow ◽  
Electrical Resistance ◽  
Liquid Flow Rate ◽  
Volume Fraction ◽  
Gas Kick ◽  
Input Pressure ◽  
Gas Volume Fraction ◽  
Gas Liquid Flow ◽  
Gas Volume

Abstract Gas kick is a well control problem and is defined as the sudden influx of formation gas into the wellbore. This sudden influx, if not controlled, may lead to a blowout problem. An accidental spark during a blowout can lead to a catastrophic oil or gas fire. This makes early gas kick detection crucial to minimize the possibility of a blowout. The conventional kick detection methods such as the pit gain and flow rate method have very low sensitivity and are time-consuming. Therefore, it is required to identify an alternative kick detection method that could provide real-time readings with higher sensitivity. In this study, Electrical Resistance Tomography (ERT) and dynamic pressure techniques have been used to investigate the impact of various operating parameters on gas volume fraction and pressure fluctuation for early kick detection. The experiments were conducted on a horizontal flow loop of 6.16 m with an annular diameter ratio of 1.8 for Newtonian fluid (Water) with varying pipe inclination angle (0–10°) and annulus eccentricity (0–30%), liquid flow rate (165–265 kg/min), and air input pressure (1–2 bar). The results showed that ERT is a promising tool for the measurement of in-situ gas volume fraction. It was observed that the liquid flow rate, air input pressure and inclination has a much bigger impact on gas volume fraction whereas eccentricity does not have a significant influence. An increase in the liquid flow rate and eccentricity by 60% and 30% decreased the gas volume fraction by an average of 32.8% and 5.9% respectively, whereas an increase in the inclination by 8° increased the gas volume fraction by an average 42%. Moreover, it was observed that the wavelet analysis of the pressure fluctuations has good efficacy for real-time kick detection. Therefore, this study will help provide a better understanding of the gas-liquid flow and potentially provide an alternative method for early kick detection.

Absorption and Mass Transfer of CO2 in Monoethanolamine Solution

2016 ◽  
Vol 859 ◽  
pp. 153-157
Author(s):  
Pao Chi Chen ◽  
Sheng Zhong Lin
Keyword(s):  
Mass Transfer ◽  
Flow Rate ◽  
Liquid Flow ◽  
Gas Flow ◽  
Liquid Flow Rate ◽  
Bubble Column ◽  
Operating Conditions ◽  
Gas Flow Rate ◽  
Constant Ph ◽  
Gas Liquid Flow

This work uses a continuous bubble-column scrubber for the absorption of CO2 with a 5M MEA solution under a constant pH environment to explore the effect of the pH of the solution and gas-flow rate (Qg) on the removal efficiency (E), absorption rate (RA), overall mass-transfer coefficient (KGa), liquid flow rate (QL), gas-liquid flow ratio (γ), and scrubbing factors (φ). From the outlet CO2 concentration with a two-film model, E, RA, KGa, QL, γ, and φ can be simultaneously determined at the steady state. Depending on the operating conditions, the results show that E (80-97%), RA(2.91x10-4-10.0x10-4mol/s-L), KGa (0.09-0.48 1/s), QL(8.74-230.8mL/min), γ (0.19-5.39), and φ (0.031-0.74 mol/mol-L) are found to be comparable with other solvents. In addition, RA, KGa, E, and QL have been used to correlate with pH and Qg, respectively, with the results further explained.

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