Numerical investigation of the influence of electromagnetic treatment on calcium carbonate scaling rate in non-isothermal pipe flow

2017 ◽  
Author(s):  
Victor Kireev ◽  
Liana Kovaleva ◽  
Andrey Isakov ◽  
Sofya Alimbekova
Keyword(s):  
Calcium Carbonate ◽  
Numerical Investigation ◽  
Pipe Flow ◽  
Electromagnetic Treatment

NUMERICAL INVESTIGATION OF CALCIUM CARBONATE SCALE AT SLIDING SLEEVE VALVES FOR WELL COMPLETION

2020 ◽  
Author(s):  
Rodrigo Maciel ◽  
Suellen Freire Rigatto da Cruz ◽  
Fabio de Assis Ressel Pereira ◽  
Edson Segantine ◽  
Andre Martins ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Numerical Investigation ◽  
Well Completion ◽  
Calcium Carbonate Scale

Experimental and numerical investigation of downward gas-dispersed turbulent pipe flow

2007 ◽  
Vol 50 (11-12) ◽  
pp. 2107-2116 ◽  
Author(s):  
M.A. Pakhomov ◽  
M.V. Protasov ◽  
V.I. Terekhov ◽  
A.Yu. Varaksin
Keyword(s):  
Numerical Investigation ◽  
Pipe Flow ◽  
Turbulent Pipe Flow

Characteristics of Calcium Carbonate Crystal Structure and Size Distribution in Solution under the Electromagnetic Field

2011 ◽  
Vol 284-286 ◽  
pp. 2136-2140
Author(s):  
Xiao Kai Xing ◽  
Rui Yan Sun ◽  
Shi Gang Wang
Keyword(s):  
Crystal Structure ◽  
Electromagnetic Field ◽  
Calcium Carbonate ◽  
Size Distribution ◽  
Particle Growth ◽  
Electromagnetic Treatment ◽  
Particles Size Distribution ◽  
Lower Temperature ◽  
Precipitate Nucleation ◽  
Chemical Water

Various non-chemical water treatment methods have been utilized to solve fouling problems. All of these methods have never been scientifically proven to be a valid tool for controlling scales, and one of reasons could be the lack of understanding of the operational principle and treatment mechanisms. The present study focuses on characteristics of calcium carbonate crystal size distribution in solution and crystal structure on the surface under the electromagnetic field in order to comprehend the mechanisms of the Electromagnetic treatment device (ETD). An electromagnetic treatment setup was built for treating scaling water, and a series of fouling tests were carried out with and without ETD, analyzing the particles size distribution in solution by Dynamics Light Scattering (DLS) technology and making Scanning Electron Microscope (SEM) photos. The main results were as follows：The number of precipitate nucleation in solution was few and the particle growth was slow without ETD. In opposition to the case untreated, a rapid particle growth was observed and the number of nucleation was expected to be more, due to the ETD effectively increasing the ions and crystals collision frequency and effectiveness by utilizing the induced electric field. It was implied that the particle growth was promoted mainly by coagulation process but not nucleation growth in all the experimental temperature range. In the high temperature, the crystal phase of calcium carbonate could be changed from aragonite type without ETD to calcite with ETD. In the lower temperature, all the precipitated crystals in solution were calcite and there were little differences between with ETD and without ETD.

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