Pulsed flow for enhanced cleaning in food processing

被引：46

作者：

Augustin, Wolfgang ^{[1
]}

Fuchs, Tatjana ^{[1
]}

Foeste, Henning ^{[1
]}

Schoeler, Martin ^{[2
]}

Majschak, Jens-Peter ^{[2
]}

Scholl, Stephan ^{[1
]}

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Chem & Thermal Proc Engn, D-38106 Braunschweig, Germany

[2] Tech Univ Dresden, Inst Proc Machines & Mobile Machines, D-01062 Dresden, Germany

来源：

FOOD AND BIOPRODUCTS PROCESSING | 2010年 / 88卷 / C4期

关键词：

Fouling; Cleaning; Pulsed flow; Shear stress; Removal; Monitoring; WALL SHEAR-STRESS; IN-PLACE; BACTERIAL REMOVAL; EQUIPMENT;

D O I：

10.1016/j.fbp.2010.08.007

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The use of slow (similar to 1 Hz) flow oscillation imposed on a stationary flow of liquid has been shown to enhance shear stresses imposed on a surface and to mitigate fouling or enhance cleaning. Examples of the application of pulsed flow are presented in this paper. A new measuring technique in combination with tailored CFD simulations was developed for monitoring the cleaning of complex piping equipment with pulsed flow. A time-independent and isotropic approach to model the wall shear stress is introduced. The optical monitoring procedure uses a model food soil consisting of starch as matrix material and phosphorescent zinc sulfide crystals as optical tracer. Investigations of pulsed flow cleaning published prior to this work focused on tests with straight pipes, whereas difficulties in industrial cleaning operations more often arise while operating piping systems and plant components with complex geometries. Therefore cleaning experiments were performed in a CIP test rig simulating industrial cleaning processes. The results with pulsed flow show an enhancement of cleaning efficiency at locations difficult to access using stationary flow. (C) 2010 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：384 / 391

页数：8

共 20 条

[1] A new test method for in-place cleanability of food processing equipment [J].

Bénézech, T ;

Lelièvre, C ;

Membré, JM ;

Viet, AF ;

Faille, C .

JOURNAL OF FOOD ENGINEERING, 2002, 54 (01) :7-15

[2] Application of turbulent pulsating flows to the bacterial removal during a cleaning in place procedure. Part 1: Experimental analysis of wall shear stress in a cylindrical pipe [J].

Blel, W. ;

Le Gentil-Lelievre, C. ;

Benezech, T. ;

Legrand, J. ;

Legentilhomme, P. .

JOURNAL OF FOOD ENGINEERING, 2009, 90 (04) :422-432

[3] Pulsed flow cleaning of whey protein fouling layers [J].

Bode, Katharina ;

Hooper, Rowan J. ;

Paterson, William R. ;

Wilson, D. Ian ;

Augustin, Wolfgang ;

Scholl, Stephan .

HEAT TRANSFER ENGINEERING, 2007, 28 (03) :202-209

[4]

Bohnet M., 1987, CHEM ENG TECHNOL, V10, P113, DOI DOI 10.1002/CEAT.270100115

[5] How hygiene happens: physics and chemistry of cleaning [J].

Fryer, PJ ;

Christian, GK ;

Liu, W .

INTERNATIONAL JOURNAL OF DAIRY TECHNOLOGY, 2006, 59 (02) :76-84

[6] Enhanced cleaning of whey protein soils using pulsed flows [J].

Gillham, CR ;

Fryer, PJ ;

Hasting, APM ;

Wilson, DI .

JOURNAL OF FOOD ENGINEERING, 2000, 46 (03) :199-209

[7]

GILLHAM CR, 1997, THESIS U CAMBRIDGE

[8]

GRASSHOFF A, 1983, KIELER MILCHW FORSCH, V35, P493

[9]

HOFFMANN W, 1983, THESIS U KIEL

[10]

Hofmann J., 2007, THESIS TU MUNCHEN

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