International Journal of Technology Enhancements and Emerging Engineering Research (ISSN 2347-4289)

IJTEEE >> Volume 3 - Issue 7, July 2015 Edition

International Journal of Technology Enhancements and Emerging Engineering Research  
International Journal of Technology Enhancements and Emerging Engineering Research

Website: http://www.ijteee.org

ISSN 2347-4289

Enhancement Of Batch Operations Based On A Contamination Free Valve Design

[Full Text]



Khaled Ahmed Ali Yehia



Keywords : Process tanks, valve design, equipment hygiene design, flush bottom tanks, contamination free.



ABSTRACT: Process industry involves large plants; mainly operating in continuous form, to achieve economic mass production output. However in some situations process vessels and tanks are used, where batch processes, take place. These tanks often contain reactants and products in the liquid state. After treatment or processing, valves are opened to allow the product to drain and vessels may receive the next batch. However, with conventional valves there will always be an amount of fluid trapped between the valve closing element and the tank or vessel, especially for those which are jacketed to allow heating or cooling. This amount is usually untreated, that is to say has not undergone the changes or processing taking place on the fluid bulk in the vessel. Moreover, no matter how accurately this amount is estimated to be isolated from the processed amount leaving the vessel, it will still contaminate with the processed product. From hygiene point of view, this may not be accepted. In this work a valve design is introduced; where no fluid is trapped between a process tank and the valve closing element. When the valve is opened the fluid flows to the outlet flow line without any contamination with unprocessed fluid. Thus a contamination free valve design is utilised to achieve hygiene design tanks or vessels used in batch based processes. Thus cheap equipment acquiring the hygiene requirements necessary for food and some other products that only can be achieved using expensive mass production lines is obtained.



[1] EHEDG Update, Feb. 1997, “A Method For The Assessment Of In-Place Cleanability Of Moderately-Sized Food Processing Equipment”, Trends in Food Science & Technology Vol. 8, February 1997, pages 54 – 57.

[2] Benezech; T.,Lelievre; C, Membre; J.M., Viet; A.-F., Faille; C., 2002, “A New Test Method For In-Place Cleanability Of Food Processing Equipment”, Journal of Food Engineering Vol. 54, 2002, pages 7-15.

[3] Betta; G, Barbanti; D and, Massini; R, 2011, “Food Hygiene In Aseptic Processing And Packaging System: A Survey In Italian Food Industry”, Trends in Food Science & Technology Vol. 22, 2011, pages 327 – 334.

[4] Becker; K.M., Parsons; R.L., Kolodinsky; J, and Matiru; G.N., May 2007, “A Cost and Returns Evaluation of Alternative Dairy Products to Determine Capital Investment and Operational Feasibility of a Small-Scale Dairy Processing Facility”, Journal of Dairy Science, Volume 90, Issue 5, Pages 2506 – 2516.

[5] Bramsiepe; C., Sievers; S., Seifert; T., Stefanidis; G. D., Vlachos; D. G., Schnitzer; H., Muster; B., Brunner; C., Sanders; J. P. M., Bruins; M. E., and Schembecker; G., Jan. 2012, “Low-Cost Small Scale Processing Technologies for Production Applications in Various Environments—Mass Produced Factories”, Chemical Engineering and Processing: Process Intensification, Volume 51, pages 32 -52.

[6] Houghton; E, and Portougal; V, June 1997,”Reengineering The Production Planning Process In The Food Industry”, International Journal of Production Economics, Volume 50, issue 2-3, pages 105 – 116.

[7] Kopanos; G. M., Puigjaner; L, and Georgiadis; M. C., December 2011, “Resource-Constrained Production Planning In Semi Continuous Food Industries”, Computers & Chemical Engineering, Volume 35, Issue 12, pages 2929 – 2944.

[8] FDA, 2007, "PMO; Pasteurized Milk Ordinance (2007 Revision) Appendix H, Pasteurization Equipment and Procedures and Other Equipment" US Food and Drug Administration, MD 20993, FDA website page last updated 7th Feb. 2014.

[9] Valyasevi; R. and, Rolle; R. S., 2002, “An Overview Of Small-Scale Food Fermentation Technologies in Developing Countries With Special Reference To Thailand: Scope For Their Improvement”, International Journal of Microbiology Vol. 75, 2002, pages 231 – 239.

[10] Apple Rubber Products, 2015, AS-568 O-Rings Standards Quick Reference Chart, Lancaster, NY 14086-9504, USA.

[11] ASME/ ANSI B36.10 M, American Society Of Mechanical Engineers, New York, NY 10016 212.591.7722.