User manual DE DIETRICH DD 3009 GLASS BROCHURE

[. . . ] Monitoring R&D and production of our own glass in for De Dietrich® an emblem of quality, of competence, of independence. ONE GLASS wITH OPTIMUM QUALITY DD 3009, ONE GLASS wITH OPTIMUM QUALITY FOR ALL PRODUCTS ALL OVER THE wORLD: · HIGHLY CORROSIVE PROCESSES · MULTIPURPOSE MATERIAL / VARIETY OF USES · ADAPTED TO cGMP REQUIREMENTS, CLEANING, CLEANLINESS, STERILIzATION · IMPERVIOUS: NO CATALYTIC EFFECT, NO CONTAMINATION · ANTI-ADHESIVE: POLYMERIzATION PROCESSES ONE GLASS wITH OPTIMUM QUALITY ALL OVER THE wORLD CHEMICAL PROPERTIES RESISTANCE TO ACIDS Generally, DD 3009 glass has a high degree of resistance to acids whatever their concentration, up to relatively high temperatures. For most of the inorganic acids, the resistance of the glass passes through a minimum for a concentration of 20-30% weight, then increases with the acid concentration. For example, the 0. 1 mm/year rate is found at 128°C in H2SO4 30% and at 180°C in H2SO4 60%. [. . . ] Generally speaking, the higher the temperature, the greater the quantity of silica required, and more the acid is concentrated, the more the amount of silica can be reduced. In presence of fluorine, silica also has a favorable influence. We always recommend a pre-test as each reaction is different. An attack inhibitor can be useful in one case and yet non-effective in another. Pure Product NaOH 1N 80 °C Buffer pH= 1 ; 100°C + HF 430 ppm HCI 20 % vapor 110 °C 0. 18 mm/year 1. 5 mm/year 0. 036 mm/year 500 ppm CaCO3 0. 09 mm/year 300 ppm SiO2 Silicon Oil 2 ml/l 0. 42 mm/year < 0. 005 mm/year HCI 20 % at 160°C : 0. 5 mm/year With 100 ppm SiO 2 : 0. 05 mm/year 180 H2SO4 30% at 160 °C Micronised silica (Levilite) 160 140 °C Speed of attack (%) 100 80 60 40 20 20 40 60 80 100 ppm of added silica HCI 20 % at 160°C Micronised silica (Levilite) Speed of attack (%) 100 80 60 40 20 % 50 100 150 200 250 ppm of added silica 120 100 0. 2 mm/year 0. 1 mm/year 10 20 30 40 Weight % MECHANICAL PROPERTIES MECHANICAL SHOCk Enamel is a glass with its qualities but also its main weaknesses which are brittleness and low tensile strength. Since the resistance of glass to compression is well above its tensile strength, one of the solutions to improve the mechanical resistance is to put the glazed layer under compressive pre-stress. This is achieved during controlled cooling after each firing. During mechanical work (deformation, mechanical or thermal shock) the compressive stress must first be offset by an equivalent tensile before the glass could be put under dangerous tensile stress. The different experimental arrangements used for measuring the mechanical shock resistance produce results which cannot be compared to each other. Therefore, there is little use trying to give intrinsic values of the mechanical shock resistance. The only way to compare different glasses is to use the same method and the same criteria. In our method, a 1 kg mass equipped with a 15 mm ball is dropped onto a glass-lined plate (glass thickness: 1. 5 mm). This plate is locked onto a magnetic base, thereby making it thicker and increasing the shock efficiency (no energy absorption through steel vibrations). The plate is electrically grounded, and the electric current going through an electrolyte deposited at the shock location is used as assessment criteria. When tested to this procedure, which is close to the real service conditions, the mechanical shock resistance of the DD 3009 glass is about 80 % greater than that of the former glass. ABRASION The abrasion test (DIN 51152) is far from the actual working conditions of a glass-lined reactor where the effects of the chemical attack enhance those of abrasion. Nevertheless, it allows a comparison between glasses, showing DD 3009 advantageously. Statistically, it has been shown that in practice the cases of destruction by abrasion are negligible. [. . . ] Evry Phone +33 1 69 47 04 00 Fax +33 1 69 47 04 10 eivs@dedietrich. com De Dietrich Process Systems Semur S. A. S. Semur-en-Auxois Phone +33 3 80 97 12 23 Fax +33 3 80 97 07 58 info@rosenmund. com IRELAND De Dietrich Process Systems Ireland Ltd Shannon Phone +353 61 366924 Fax +353 61 366854 sales@dedietrich. ie SwITzERLAND De Dietrich Process Systems AG Liestal Phone +41 61 925 11 11 Fax +41 61 921 99 40 info@rosenmund. com UNITED STATES De Dietrich Process Systems Inc. Mountainside, NJ Phone +1 908 317 2585 Fax +1 908 889 4960 sales@ddpsinc. com Charlotte, NC Phone +1 704 587 04 40 Fax +1 704 588 68 66 rosenmund@ddpsinc. com ITALY De Dietrich Process Systems Srl San Dona' Di Piave (VE) Phone. [. . . ]