Determination of the "Gas-Free" Liquid Level And the Annular Gas Flow Rate For a Pumping Well

1976 ◽  
Vol 15 (02) ◽  
Author(s):  
L.G. Alexander
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Liquid Level ◽  
Gas Flow Rate

Research on Deposition of Micro-Nano Aerosols in Rising Bubble Under Pool Scrubbing Condition

2018 ◽  
Author(s):  
Yanmin Zhou ◽  
Haifeng Gu ◽  
Qiunan Sun ◽  
Zhongning Sun ◽  
Jiqiang Su ◽  
...  
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Bubbly Flow ◽  
Aerosol Deposition ◽  
Deposition Efficiency ◽  
Filtration Efficiency ◽  
Liquid Level ◽  
Gas Flow Rate ◽  
Reactor Accident ◽  
Rising Bubble

Aerosols as the main component of radioactive products in migration performance, which is an important factor that a unclear reactor accident present strong diffusion and affects the distributions of source and dose level in reactor containment, and they are therefore expected to be deposited in liquid phase such as in suspension pool and filtered containment venting device. In this paper, the deposition characteristics of micro-nano aerosols in rising bubble under pool scrubbing condition is studied with experiment, the aerosols size in the research range from 20 nm to 600 nm, and the bubble morphology mainly concern homogeneous bubbly flow. The results show that the deposition efficiency and mechanism of aerosol closely relate to gas flow rate, liquid level, particle size and bubbles size and so on. The aerosol deposition near 85nm is proved most difficult because of the convert of deposition mechanisms. In a high liquid level condition, micro-nano aerosol filtration efficiency is enhanced but gradually gradual. Under different gas flow rate, air bubble residence time and the bubble size distributions affect the filtration efficiency of aerosols.

scholarly journals KLa Determination Using the Effectiveness-NTU Method: Application to Countercurrent Absorbers in Operation Using Viscous Solvents for VOCs Mass Transfer

2019 ◽  
Vol 3 (2) ◽  
pp. 57
Author(s):  
Éric Dumont
Keyword(s):  
Mass Transfer ◽  
Flow Rate ◽  
Gas Flow ◽  
Liquid Flow Rate ◽  
Gas Flow Rate ◽  
Heat Exchanger Design ◽  
Volatile Organic ◽  
Overall Mass Transfer Coefficient ◽  
Viscous Solvents

In this study, the Effectiveness-NTU method, which is usually applied to heat exchanger design, was adapted to gas–liquid countercurrent absorbers to determine the overall mass transfer coefficient, KLa, of the apparatus in operation. It was demonstrated that the ε-NTU method could be used to determine the KLa using the Henry coefficient of the solute to be transferred (HVOC), the gas flow-rate (QG), the liquid flow-rate (QL), the scrubber volume (V), and the effectiveness of the absorber (ε). These measures are calculated from the gaseous concentrations of the solute measured at the absorber inlet (CGin) and outlet (CGout), respectively. The ε-NTU method was validated from literature dedicated to the absorption of volatile organic compounds (VOCs) by heavy solvents. Therefore, this method could be a simple, robust, and reliable tool for the KLa determination of gas–liquid contactors in operation, despite the type of liquid used, i.e., water or viscous solvents.

scholarly journals Mass transfer parameters in spray columns

1989 ◽  
Vol 8 (2) ◽  
pp. 56-62
Author(s):  
A. J. Rautenbach ◽  
G. Kornelius
Keyword(s):  
Mass Transfer ◽  
Flow Rate ◽  
Gas Flow ◽  
Gas Flow Rate ◽  
Spray Characteristics ◽  
Photographic Technique ◽  
Transfer Parameters

To determine mass transfer parameters in spray columns the spray characteristics are required. A photographic technique that allows determination of these characteristics of wash oil sprayed through solid nozzles is described. Special precautions had to be taken because wash oil rendered the column walls opaque. Results are given for a specific nozzle as function of liquid and countercurrent gas flow rate.

scholarly journals Improvement of atomic-emission analysis with inductively connected plasma for studying the composition of mineral samples.

2020 ◽  
Vol 11 (3-2020) ◽  
pp. 23-29
Author(s):  
D. N. Bordiyan ◽  
◽  
I. R. Elizarova ◽  
V. F. Zaytsev ◽  
M. B. Malisheva ◽  
...  
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Analytical Signal ◽  
Atomic Emission ◽  
Spray Chamber ◽  
Gas Flow Rate ◽  
Emission Analysis ◽  
Atomic Emission Analysis

The paper considers аsoftware method (WinLab32,Optima 2100DV)emission spectrometer for increasing the intensity of the analytical signal when the gas flow rate of the atomizer in the spray chamber changes. The determination of the optimal atomizer gas flow value was carried out as a result of mathematical and empirical approximations for each wavelength of the selected analytes.

scholarly journals Pengukuran konstanta henry toluen dan benzen dalam minyak dan air dengan kolom gelembung

2018 ◽  
Vol 9 (2) ◽  
pp. 49
Author(s):  
S Suhartono ◽  
Herri Susanto ◽  
Dwiwahju Sasongko ◽  
Azis Trianto
Keyword(s):  
Flow Rate ◽  
Palm Oil ◽  
Oil Palm ◽  
Sunflower Oil ◽  
Gas Flow ◽  
Producer Gas ◽  
Gas Flow Rate ◽  
Henry's Constant ◽  
Lubrication Oil

Determination of Henry’s constant for toluene and benzene in oils and water were carried out in a bubbling bottle with diameter of 3 cm. Air containing toluene vapour or benzene vapour was bubbled through 50 mL absorbing liquid. The gas flow rate was 13.6 mL/min. By measuring the concentration of toluene or benzene in the inlet and outlet gas stream, we were able to calculate their concentrations in absorbing liquid. We found that the value of Henry’s constant of toluene in lubrication oil and palm oil at 30 oC were 155 and 145 respectively (H= CG/CL, with CG in mol/L and CL in mol/L). We also found that the absorption capacities were in the order (from the highest) of: lubrication oil, palm oil, and sunflower oil. Henry’s constant of toluene in water was at about 4 which was much lower than those of oils.Keyword: absorption, Henry’s constant, toluene, benzene, producer gas AbstrakPengukuran konstanta Henry sistem toluen dan benzen dalam minyak dan air dilakukan melalui percobaan absorpsi di dalam sebuah kolom gelembung dengan diameter 3 cm. Minyak sawit, minyak bunga matahari, minyak pelumas dan air digunakan sebagai absorben. Toluen dan benzen dipilih sebagai tar model. Gas model yang tersusun dari udara dan uap toluen atau benzen digelembungkan ke dalam absorben 50 mL. Absorpsi dilakukan pada suhu 30 dan 60 oC dan laju alir gas model 13,6 mL/min. Analisa dilakukan terhadap konsentrasi aliran gas model sebelum dan sesudah absorpsi. Analisa tersebut dilakukan dengan kromatografi gas Shimadzu GC-8APF. Konstanta Henry dihitung sebagai H=CG/CL dan H=P/CL. Nilai 1/H sistem toluen-minyak pelumas dan toluen-minyak sawit pada suhu 30 oC dan laju alir gas 13,6 mL/min berturut-turut adalah 155 dan 145 (untuk CG dalam mol/L dan CL dalam mol/L). Merujuk pada nilai-nilai konstanta Henry hasil percobaan, minyak pelumas dan minyak sawit merupakan cairan penyerap yang paling cocok untuk toluen dan benzen sebagai representasi tar dalam gas hasil gasifikasi. Urutan besarnya kapasitas absorpsi cairan penyerap terhadap toluen dan benzen adalah sebagai berikut (berturut-turut dari yang besar): minyak pelumas, minyak sawit, minyak bunga matahari dan air. Konstanta Henry toluen dalam air berada pada kisaran 4, yang menunjukkan bahwa kapasitas absorpsi toluen dalam air lebih rendah dibandingkan kapasitas absorpsi toluen dalam minyak.Kata Kunci: absorpsi, konstanta Henry, toluen, benzen, gas produser

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