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Investigating of Synthesis Parameters, Kinetics and Pilot Plant of Sodium Sarcosinate

Untersuchung der Herstellungsgrößen und der Kinetik, sowie zu einer Versuchsanlage für Natriumsarkosinat
Masoumeh Hassanzadeh, Masoud Kambarani, Reza Saghafi and Hedieh Dezfouli

Abstract

Sodium sarcosinate, an anionic surfactant, is known as a methylated glycine derivative, that is synthesized in a one-step amidation reaction. In this work, to find out the best conditions, several experiments carried out. So, the highest yield was obtained at (303)°C, by gradual addition of sodium monochloro acetate to methylamine solution. The total reaction time is 6 hours. Based on data, and the plots of kinetics of the reaction, a second-order reaction equation was suggested for this synthesis reaction. The rate constant (κ), and the regression coefficient (R2) were found as 0.0085 and 0.0934, respectively, which were in the best agreement with second-order reactions. According to the results, these data were applied for scale up laboratory to pilot phase. In addition, an industrial plant was suggested and designed.

Kurzfassung

Natriumsarkosinat ist ein anionisches Tensid. Es ist bekannt als methyliertes Glycinderivat, das in einer einstufigen Amidierungreaktion synthetisiert wird. In dieser Arbeit wurden verschiedenen Experimente mit dem Ziel durchgeführt, die besten Synthesebedingungen zu finden. Die höcheste zu erzielende Ausbeute wurde bei (303)°C durch allmähliche Zugabe von Natriummonochloracetat zu einer Methylaminlösung erhalten. Die Gesamtreaktionszeit betrug 6 Stunden. Auf Basis der Reaktionsdaten und den Auftragungen der Reaktionskinetik wurde für die Synthesereaktion eine Reaktion zweiter Ordnung vorgeschlagen. Die Geschwindigkeitskonstante (κ) und der Regressionskoeffizient betrugen 0,0085 bzw. 0,0934, was in guter Übereinstimmung mit einer Reaktion zweiter Ordnung ist. Die erhaltenen Daten für die Übertragung vom Labor- in den Technikumsmaßstab verwendet. Des Weiteren wurde eine Industrieanlage vorgeschlagen und konstruiert.


Dr. Masoumeh Hassanzadeh, Designing Chemical Process Research Group (ACECR), Tehran University, Tehran, Iran, E-Mail:

Masoumeh Hassanzadeh was born in August 1971. She received her B.Sc. and M.Sc. degrees in organic chemistry from Shahid Beheshti University in Tehran, Iran. She started her work at ACECR-University of Tehran branch, as a researcher from 1995 to 2001. After that she has became a faculty of Design Chemical Processes Research Group from 2001 to present. Her fields of interest are synthesis and analysis of surfactants and emulsifiers and she has carried out about 20 projects in this field in laboratory, bench, pilot and industry scales as a colleague or head of projects.

Masoud Kambarani was born in May 1969. He received his B.Sc. degree in chemical engineering from University of Tehran, and M.Sc. degree from Sharif University and now he has a PhD student in faculty of engineering at Tehran University. He has been working on basic and detail design and scale up of chemical processes, especially about surfactants, as a colleague or head of research group, for about 15 years.

Reza Saghafi was born in Jan. 1972. He received his B.Sc. in Applied Chemistry from Azad University of Tehran, Iran, and M.Sc. degree in research management from institute of humanities & social studies in Tehran, Iran. He has been working at Design Chemical Process Research Group as a research member of ACECR-University of Tehran branch since April 1999. He has carried out many projects in laboratory, bench, pilot and industry as a colleague or head of the project.

Hedieh Dezfouli was born in July 1970. She studied Chemistry (B.Sc.) at University of Gilan. Afterwards she received a master degree in Inorganic Chemistry from Razi University, in Kermanshah, Iran. Since 2008, she is working at Design Chemical Processes Research Group, ACECR-University of Tehran branch, as a researcher with a research field of surfactants and emulsifiers.


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Received: 2012-01-01
Revised: 2012-07-01
Published Online: 2013-04-05
Published in Print: 2012-11-01

© 2012, Carl Hanser Publisher, Munich