Falling film evaporator People's Republic of China National Light Industry Standard industry standards falling film evaporator QB / T1163-2000 replace QB / T1163-1991 National Light Industry Council approval 2001-02-01 2000-09-08 implement a range of the standard provisions of the falling film evaporator product classification, technical requirements, test methods, inspection rules and signs, packaging, transportation and storage. This standard applies to the dairy industry and the food, pharmaceutical, chemical and other industries falling film evaporator heat-sensitive materials preheating, sterilization and evaporation. 2 References The following standards contain provisions which, through reference in this text, constitute provisions of the standard. At time of publication, the editions indicated were valid. All standards are subject to revision, the standard parties should explore the possibility of using the latest version of the following standards. GB151-1989 GB150-1998 steel pressure vessel steel shell and tube heat exchangers GB / T191-199. Packaging Pictorial signs GB4806.1-1994 rubber products for food hygiene standards GB5408-1985 GB12073-1989 sterilized milk dairy equipment safety and hygiene GB / T13306-1991 signage GB / T14253-1993 Light Industry Machinery General technical conditions GB / T16769- 1997 Metal-cutting machine noise level measurements GB16798-1997 food machinery safety and health QB / T1588.4-1993 Light Industry Machinery paint general technical conditions QB / T1588.5-1996 Light Industry Machinery packaging technology QB / T1823- 1993 Dairy Machinery Model methodology QB / T1826-1993 centrifugal sanitary pump 3 Product Categories 3.1 type falling film evaporator of the type specified in this standard shall be tubular. a) whether the secondary steam press for time-efficient heating into a single efficient and multi-effect categories. b) by the use of secondary steam is compressed into with thermal compression heat pump and without compression pump types. 3.2 Basic parameters 3.2.1 Evaporation series as follows: 600,700,800,1000,1200,1600,2000,2400,2800,3200,3600,4000,5000,6000,7000,8000,10000,12000kg / h 3.2.2 evaporation temperature first Efficiency is not higher than 76 ° C, the end effect is not lower than 38 ° C 3.2.3 Unit steam consumption are shown in Table 1, Table 1 steam consumption kg / kg water efficiency without hot compress several pumps with single-effect heat compression pump Remarks 1.10.65 does not include the sterilization of double-effect 0.600.46 does not include sterilization Three Way -0.28 -0.22 excluding the effect of excluding the four sterilization sterilization five-efficient -0.19 does not include sterilization Note: Use the saturated vapor pressure of 0.8MPa (0.5MPa) 3.2.4 unit water consumption are shown in Table 2, Table 2 Water consumption kg / kg vapor compression efficiency number without heat pump with heat pump Remarks single compression efficiency of 15 to 2011, including warm-up double-effect, including warm-up three-way 107.5 -5.5 include preheating four-way, including warm-up five-efficient -4 -4.5 include preheating Note: cooling water inlet temperature 20 ° C or less, the water temperature below 40 ° C. 3.3 falling film evaporator consists of the following main components: a) an evaporator body; b) a separator; c) the material preheating device; d) high-temperature sterilization; e) the flash tank (pleiotropic); f) Heat Compression pump; 9) vacuum forming device; h) material pump; i) feed tank; 1) washing liquid tank; k) electrical control devices. 3.4 Model Description falling film evaporator, the preparation method should comply with QB / T1823's. RNJM × - × BR category code (milk and dairy machinery) N classification code (concentrate) JM feature code (falling film evaporator) × main parameters (evaporation kg / h) × Model Algebra (number of effects) B Process Code (B and flow, C crossflow) For example: evaporation capacity 1000kg / h, and the stream of double-effect recorded as RNJM2-1000B 4 technology product manufacturers should comply with the requirements of GB / T14253 in. 4.1 falling film evaporator shall comply with the provisions of this standard, in accordance with prescribed procedures approved manufacturing drawings and technical documents. 4.2 Where the material and the metal parts in contact with the secondary steam austenitic stainless steel should be used, the material shall conform to the provisions of GB16798. 4.3 material for sealing shall comply GB4806.1 must heat, oil, in normal use cleaning agents, disinfectants are not corrosive, non-contaminated material. 4.4 falling film evaporator lamp holes, as the hole of the glass should be used with heat-resistant glass. 4.5 use materials, purchased parts, the Association shall supply units provide certificate. Otherwise factory inspection deal with its prospective use rear. Do not use grades unknown, untested department inspection of materials and spare parts. 4.6 based on design requirements, weldments shall conform GB150's. The welding rod should comply with the relevant national standards. 4.7 Where the structure and material contact parts should be easy to clean, disinfect and repair; transition at the transition should be smooth, the interior angle of less than 1350, the transition radius R of not less than 6.5mm, the surface roughness Ra value not greater than 1.6μm 4.8 evaporator body 4.8.1 evaporator body tolerances shall comply with the provisions of GB151-1989 in 4.2.1,4.2.2,4.2.3. 4.8.2 evaporator manufacturer shall comply with the relevant provisions of GB151-1989 in 4.2.4,4.2.5,4.2.6. 4.9 separators, condensers, tanks manufactured within the steam should comply with the relevant provisions of GB150. 4.10 4.10.1 evaporation tube evaporator tubes shall comply with the provisions of GB151-1989 in 3.8.2. 4.10.2 evaporation tube should not have joints. Wall roughness is not greater than 3.2μm 4.10.3 R. evaporation tube axis straightness deviation limit is not more than 2 / 1000mm 4.10.4 evaporation tube and tube plate connection Expansion Act, the ambient temperature must not fall below -10 ° C. There should be no cracks and affect the flow of materials and material sealed after 4.10.5 Expansion evaporation tube defects. 4.11 board manufacturing shall meet the following requirements 4.11.1 tube plate surface should be smooth, clean, allowed dissection, cracks and other defects, surface roughness Ra value not greater than 1.6μm 4.11.2 Expansion of the tube sheet hole surface does not allow There are longitudinal and spiral through to score. 4.11.3 tube plate aperture tolerances shall comply with the provisions of GB151-1989 tables 3-11. Hole surface roughness Ra value of not more than 12.5μm 4.11.4 hole bridge width deviation should be consistent GB151-1989 tables 4-2 (a) of the regulations. Preheat 4.12 serpentine coil manufacturer shall comply with the following requirements 4.12.1 preheat serpentine coil curvature, pitch uniformity, no wrinkles. 4.12.2 preheat serpentine coil fittings shall GB151-1989 in 4.3.3b, d, e requirements of manufacturing and testing. 4.13 vacuum suction load when population pressure is less than 8kPa (absolute pressure). 4.14 Jin, a centrifugal pump milk shall comply with QB / T1826's. The feed pump suction inlet pressure is higher than the requirements of 8.5kPa 4.15 after the tube plate assembly level limit deviation is not greater than the 4.15.1 2 / 1000mm 4.15.2 pipe bending curvature evenly, without wrinkles. 4.15.3 evaporation tube axis perpendicular to the plane of the upper tube plate limit deviation is less than 1/15 degrees. 4.15.4 When the device dry run to a vacuum degree of 0.092MPa, stop the run, the degree of vacuum within 30min loss shall not exceed 10% 4.16 parts where the provisions of polished surfaces, polished texture uniform, neat, without burns, abrasions and other defects . The surface roughness Ra value not greater than 1.6μm 4.17 Where the provisions of polished chrome-plated parts, should not have come off, dark, rough surface should be bright, roughness Ra value not greater than 1.6μm 4.18 If students painted parts, paint quality should comply with QB / T1588.4's. 4.19 4.19.1 safety and health safety requirements should be consistent with the relevant provisions of GB12073. 4.19.2 overall noise level not higher than 85dB (A) 4.20 in normal use and maintenance, the product life of not less than 15 years.

keywords: MVR evaporator, evaporator providers, evaporator price,