User manual DE DIETRICH WM3273E2

[. . . ] All the operators are nowadays perfectly aware of the safety rules and incidents very rare. But these rules are unfortunately not applicable to all processes, and very often the accumulation of electrostatic charges cannot be avoid. [. . . ] The fibres are not joined, but the glass thicknesses which are inbetween them are extremely small and can be compared to a network of micro-condensers discharging in line to let the electrostatic charges flow gently to the ground without any damage for the glass-lining. The opposite sketch compares the behaviours of ConductiGlass® and conventional DD 3009 glass-linings when applying them an increasing voltage (at 150 °C). Let's have a look on the DD 3009 curve : a very weak leak current appears around 5 kV and grows regularly up to the breakdown of the glass-lining occurring around 15 kV. As far as ConductiGlass® is concerned, the leak current starts at a higher value from low voltage, then grows quickly prohibiting the voltage to increase : the flow to the ground of the electrostatic charges is then as fast as their creation, integrity of the glass-lining is preserved, 150 C 22 C risks of explosion are dismissed. 500 Working principle of WM3273E2® WM3273E2® Leak current (µA) Email Thickness (mm) 450 400 350 300 250 200 150 100 50 0 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 This major problem which was one of the last remaining in glass-lining technology is solved from now on by the use of a new kind of glass-lining named ConductiGlass®. 3009 GLASS damage ! grounding with a Tantalum plug is not efficient Note that grounding through a Tantalum plug does not solve the problem. As the medium is non conductive, the "lightning conductor" effect of any electrode is only efficient a couple of centimetres around it. Voltage (kV) Easy to implement on any kind of equipment Continuous intrinsic property of the whole thickness of the glass-lining, during all the life time of the equipment Dielectric controls and EmailTest monitoring remain possible Efficient : more than 100 references since 1998 The advantages of ConductiGlass® Homogeneity The sketch and the micrographic picture below show the principle of homogeneous fibres dispersion in the whole thickness of the glass-lining, from the upper surface in contact with the product down to the steel support. This continuous repartition of the fibres in the whole thickness of the glass-lining is the guarantee of the efficiency of the ConductiGlass® solution, on all the surfaces it is applied, whatever the complexity of the shapes, the sizes of the vessels and accessories, for all the life time of the equipment. Shannon Phone +353 61 366925 Fax +353 61 366854 bobmulqueen@eircom. net GLASS-LINING SPAIN DE DIETRICH EQUIPOS QUIMICOS S. L. Barcelona Phone +34 932 920 520 Fax +34 932 184 709 comercial@dedietrichbcn. com FRANCE ROSENMUND S. A. S. Semur en Auxois Phone +33 3 80 97 12 23 Fax +33 3 80 97 07 58 rog@rosenmund. fr BELGIUM IVIA N. V. Heverlee-Leuven Phone +32 16 40 5000 Fax +32 16 40 5500 info@ivia. be GLASS-LINING DE DIETRICH PROCESS SYSTEMS S. A. S. Courcouronnes Site (EIVS) Phone +33 1 69 47 04 00 Fax +33 1 69 47 04 10 eivs@eivs. fr NETHERLAND IVIA B. V. GM Breda Phone +31 765 42 15 44 Fax +31 765 42 15 76 info@ivia. nl SWITZERLAND ROSENMUND VTA AG DDPS SWITZERLAND Liestal Phone +41 61 925 11 11 Fax +41 61 921 99 40 info@ddpsschweiz. ch BRAZIL DE DIETRICH DO BRASIL São Paulo Phone +55 11 6703 7380 Fax +55 11 6702 4284 brasil@dedietrich. com. br GERMANY QVF ENGINEERING GmbH Mainz Phone +49 61 31 97 04 0 Fax +49 61 31 97 04 500 mail@qvf. de SOUTH AFRIKA Imprimerie VALBLOR Strasbourg 305 0653 - 05/03 UNITED STATES DE DIETRICH PROCESS SYSTEMS, Inc. [. . . ] GM Breda Phone +31 765 42 15 44 Fax +31 765 42 15 76 info@ivia. nl SWITZERLAND ROSENMUND VTA AG DDPS SWITZERLAND Liestal Phone +41 61 925 11 11 Fax +41 61 921 99 40 info@ddpsschweiz. ch BRAZIL DE DIETRICH DO BRASIL São Paulo Phone +55 11 6703 7380 Fax +55 11 6702 4284 brasil@dedietrich. com. br GERMANY QVF ENGINEERING GmbH Mainz Phone +49 61 31 97 04 0 Fax +49 61 31 97 04 500 mail@qvf. de SOUTH AFRIKA Imprimerie VALBLOR Strasbourg 305 0653 - 05/03 UNITED STATES DE DIETRICH PROCESS SYSTEMS, Inc. Union, NJ Phone +1 908 686 4900 Fax +1 908 686 8340 sales@ddpsinc. com Charlotte, NC Phone +1 704 587 04 40 Fax +1 704 588 68 66 rosenmund@ddpsinc. com Glass-Lining plant Corpus Christi, TX DE DIETRICH SOUTH AFRICA (PTY) Ltd Dunswart Phone +27 11 918 4131 Fax +27 11 918 4133 ddsa@iafrica. com SINGAPORE DE DIETRICH SINGAPORE (PTE) Ltd Phone +65 68 61 12 32 Fax +65 68 61 61 12 dedietrichdds@pacific. net. sg CHINA QVF PROCESS SYSTEMS Ltd Shanghai Rep. [. . . ]