BEN-WASH Solubilizing. Diffusion. Dilution.
Transcripción
BEN-WASH Solubilizing. Diffusion. Dilution.
BEN-WASH Solubilizing. Diffusion. Dilution. BEN-WASH The EXTRACTA principle: High washing efficiency with low water usage The EXTRACTA principle divides the washing process into stages that can be repeated with accuracy. Besides making the whole process easier to follow it also makes it amenable to calculation. In each of the separate washing chambers the dirt or chemical liquor present in the cloth is exchanged 50 to 80% for wash liquor, which is loaded commensurately with dirt and chemicals. Entrainment of the contaminated liquor with this cloth is prevented by the EXTRACTA roller. In the next chamber the liquor exchange is repeated but with much lower dirt concentration in the wash liquor. Together with the known freshwater throughput, this predictable action provides the basis for calculating a washing operation in advance. Minimal fresh water consumption leads to saving in water, effluent and energy costs Capital investment and operating costs determine the economy of washing machines. The water consumption for a defined washing effect is depending on the type and number of washing compartments. Our palette of compartment types permits a machine configuration that is as flexible as it is economical. 2 The right machine combination for every requirement The diversity of washing compartments available and the modular design provide the means for every industrial textile washing need. By correct selection of type and number of washing compartments, the plant layout is adapted to any customer requirement. With Benninger, crease-free operation is a matter of fact A crease-free fabric run is guaranteed ■ Large guide roll diameters and adapted roll spacing that prevent the fabric from skewing and guarantee crease-free treatment from entry to exit of the range ■ Computer controlled tension force from 100–500 N with press rolls or, 200–600 N without press rolls ■ Screw expanders with separate drive ■ Free running outer bearings with minimal friction ■ on bath rolls Self-aligning ball-bearings, life-time lubricated, with carbon sliding ring seals; ■ on upper rolls Self-aligning ball-bearings; life-time lubricated, with PTFE labyrinth seals; ■ on press rolls Self-aligning roller-bearings; life-time lubricated, with PTFE labyrinth seals. Drive control via swiveling compensators and load cells Intermediate squeezers (pulling/squeezing device) are controlled via swiveling compensator and frequency converter in the next compartment. The upper roll single drive is controlled with a separate frequency converter; in compartments followed by a pulling/squeezing device via a measuring roll with a load cell; in compartments without subsequent pulling/squeezing device via the swiveling compensator of the following compartment. Angle detector of Swiveling compensator for drive control Load cell 3 BEN-WASH Energy saving starts in the washing compartments High-efficiency washing compartments DA with intermediate squeezer DA 3 Fabric content 13 m DA 5 Fabric content 23 m DA 7 Fabric content 32 m High-efficiency washing compartments DA C without intermediate squeezer DA 3C Fabric content 15 m DA 7C Fabric content 34 m DA 5C Fabric content 25 m These high-performance, double loop washing compartments with rubber coated press rolls, especially recommended for medium to heavy fabric, achieve a maximum washing effect. In each washing chamber, the fabric is immersed twice in the washing liquor which is then pressed through the fabric in the nip pools between roll and fabric. The intensive liquor exchange in the fabric is supported by the cross flow in the chambers. Good accessibility to the washing compartments, covers can be lifted easily 4 The single driven upper rolls with press rolls (EXTRACTA squeezers) are a fully fledged drive. Thus no other additional drive in the form of an intermediate squeezer is needed, as is the case with sliding clutch and relax drives. No steam escapes from the steamtight EXTRACTA washing compartments even at high temperature. The steam sealing of the entire washing range leads to a better washing effect, and energy consumption is distinctly reduced. The variety of compartments gives you flexibility High-efficiency washing compartments EA with intermediate squeezer EA 3 Fabric content 9 m EA 5 Fabric content 15 m EA 7 Fabric content 20 m High-efficiency washing compartments EA C without intermediate squeezer EA 7C Fabric content 9 m EA 7C Fabric content 20 m EA 5C Fabric content 15 m The EA high-performance washing compartments use the same principle as the DA compartments, with press rolls (EXTRACTA squeezer) and individually driven upper rolls. Washing compartments with 3-, 5 or 7 chambers with single loop, upper roll drive and press rolls for best liquor separation. Single loop provides better accessibility to the cloth and easier handling. As only one immersion per chamber is possible, the washing effect with the same amount of water (per cloth weight) is lower than with double loop. This effect is compensated for by the greater number of washing chambers per compartment. The residence time in the EA washing compartments is, however, lower than with double loop. 5 EXTRACTA The plain wash compartments with stripper roll Washing compartments E with intermediate squeezer E3 Fabric content 9 m E7 Fabric content 20 m E5 Fabric content 15 m Washing compartments E C without intermediate squeezer E 3C Fabric content 9 m E 5C Fabric content 15 m E 7C Fabric content 20 m No rubber coated press rolls The advantage of this model lies in the low maintenance costs, as these compartments have no rubber coated press rolls (EXTRACTA squeezers). Optional single drives For tension sensitive styles, upper roll single drives are available as an option, whereby the number of drives is freely selectable. The plain wash compartments with stripper roll for liquor separation are used with individual drive for open and lightweight cloths with single liquor separation. Liquor exchange and washing efficiency are much lower for reduction washing than with the EXTRACTA roll system. 6 EXTRACTA compartments enable most economical washing Reaction compartments D with intermediate squeezer D3 Fabric content 13 m D5 Fabric content 23 m D7 Fabric content 32 m Reaction compartments D C without intermediate squeezer D 3C Fabric content 15 m D 5C Fabric content 25 m D 7C Fabric content 34 m This disadvantage can be compensated only by making the machine longer or using more water. The high-performance ‘D’ wash compartments follow the principle of the ‘E’ compartments. ‘D’ compartments are used mainly for post-dye washing, where good diffusion and long reaction time are demanded. 7 Profit from these advantages ■ Flexible machine layout due to the variety of models and the modular design ■ Operationally reliable and functional design ■ Calculable washing effect ■ Controlled reproducible results ■ Closed steamtight machine ■ Best possible washing effect ■ Compartments with two separate sections ■ Low water and power consumption ■ Only single drives applied ■ Constant fabric tension ■ Crease-free operation FORTRACTA High-performance washer for surface contamination The FORTRACTA prewasher is a further development of the proven Benninger gap technique for washing-out contamination. The cloth web is led upwards in two ducts. The wash liquor flows down by gravity similar to a waterfall. A strong washing action is obtained by this counterflow principle in the duct. Liquor separation is effected by stripper rolls and flat jet nozzles at the exit from the FORTRACTA compartment. Since the fabric carries large amounts of chemicals especially at the beginning of the wash, rubberized rolls are not provided in this compartment. The short distances between rollers and the large roll diameters assure creaseless cloth running. 10 Economics determine the washing procedure BEN-CONTROL Speak with data With the classical roller vat washing process where the fabric is moved through stationary liquor with only short reaction times, costs can hardly be reduced. In this process high molecular weight substances are fully swelled and as consequence lead to an increase in viscosity, conglutination and therefore a high water consumption. The Benninger patented concept on the other hand, is based on a significantly lower water and steam consumption and minimum use of chemicals. As opposed to conventional methods, comparable results are better and achieved substantially quicker. A quite natural washing process The fabric passes through a narrow casing divided into two shafts. Steam and water are directed onto both sides of the fabric, either individually or in any desired combination. Due to the slot and shaft geometry high flow speeds are caused which create a high kinetic energy. According to the process used, operation can be with counter-flow water only from the following washing compartment and a 11 liquor circulation system. The INJECTA offers numerous process variations and thus a high degree of flexibility in styles. Through the shock heating of the wet fabric to 100°C in the INJECTA the high molecular weight substances swell up immediately, with a simultaneous reduction in viscosity through the effect of the high kinetic energy. This means that they are removed with a significantly smaller quantity of water. INJECTA Rationalized removal of high molecular weight substances Optimized desizing The size is removed to the extent that subsequent processes can be carried out in the best possible manner and without difficulty. Water-soluble sizes such as PVA, PAC, PES and CMC, and also unmodified, water-insoluble starch sizes are removed with a very high removal rate and low water application of 3–5 l/kg. 100% synthetic fabrics can also be successfully desized in this manner. Airbag fabrics are cleaned to the required residual content of < 0.5% by the INJECTA. Do you wish to wash out conventional size and printing thickeners, that is, high molecular weight and adhesive substances with a high swelling capability? Or must PVA, PES sizes, spinning or spooling oils be removed from synthetic fabrics? You can solve all your critical tasks with the new INJECTA washing system. To facilitate infeeding the fabric the shafts can be opened The INJECTA makes the single-stage BEN-BLEACH concept feasible: In one single step! – from greige to finished, dry fabric. 12 Clean washing is a matter of superior technology Profit from INJECTA advantages ■ Significantly lower water and steam consumption ■ Highly concentrated effluents provide ideal conditions for partial flow disposal or size recycling ■ The washing effect of a single INJECTA compares to that of a multi-chamber high-performance full-width washing machine ■ Printing after treatment is no problem with no danger of staining the ground ■ Continuous desizing of water-insoluble starch sizes 13 TRIKOFLEX Low-tension open-width treatment Benninger, the leading manufacturer of roller vat washing machines, is also your best advisor for drum washing machines. The TRIKOFLEX system, ensuring low tension treatment of knitted, pile and woven fabrics, has set new standards in textile finishing. Incorporating a range of system improvements, Benninger has found the best way to meet increased market requirements. The TRIKOFLEX LT-DB in a few words ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Flexibility due to modular concept Box design with excellent torsion and floor stability No transmission drives nor friction clutches; only single motor drives Separate intermediate squeezer Connectable with EXTRACTA compartments Excellent accessibility to the squeezers and compartments for cleaning/ maintenance The entire machine is steamtight Optimum shrinking results ensured by single motor drives Two side washing, specially important for dense fabric Large guide roll diameter and proper spacing ensure crease-free operation 14 ■ ■ ■ ■ ■ Liquor separation due to two circulating systems Counter-flow by gravity possible over the whole washing range Spray pipes adjustable from the outside Functional, modern design Level of automation as required For mono- and bi-elastic woven goods Result: The new Benninger TRIKOFLEX generation enables the finisher to treat the entire range from mono- and bielastic, as well as crease sensitive woven fabrics without problems and at low tension. This concept also offers savings on water and energy. 15 TRIKOFLEX Flexibility in the structure TRIKOFLEX LT-DB TRIKOFLEX LT-DB C TRIKOFLEX LT-DB C-R with intermediate squeezer 1 liquor circulation Cloth content 8 m without intermediate squeezer 1 liquor circulation Cloth content 7 m with reaction zone 1 liquor circulation Cloth content 12 m TRIKOFLEX LT-DB C2 TRIKOFLEX LT-DB 2/2-R without intermediate squeezer 2 liquor circulation Cloth content 7 m with reaction zone for neutralisation 2 liquor circulations Cloth content 12 m TRIKOFLEX LT-DB 2 with intermediate squeezer 2 liquor circulations Cloth content 8 m Taylor made concepts Depending on the fabric and the process, the modular build system TRIKOFLEX can be delivered in various versions. ■ ■ ■ ■ ■ ■ ■ 16 LT-DB with one liquor circulation with 60 m3/h LT-DB 2 with two liquor circulations with 2 x 30 m3/h LT-DB with intermediate squeezer LT-DB C without intermediate squeezer Direct steam heating, or indirect heating with heat exchanger Mechanical, or automatic self-cleaning filters Various drive systems Grooved drum Drawing of the active washing principle with grooved drum 1 Closed drum body 2 Groove profile 3 Mesh belt 4 Fabric 5 Outer liquor film 6 Spray pipe The heart of the TRIKOFLEX washing system is the grooved drum with a combination of grooved profile and mesh covering. It serves as a supporting element for the fabric. The large surface of the drum ensures smooth and low-tension fabric passage over a long contact path. The enclosed design prevents impurities from entering the drum. The result: The washing liquor penetrates the fabric and forms a liquor film on the front and back side. In this way, impurities on both sides are quickly removed. At the same time a cleaning effect within the mesh is created. The washing effect, compared to standard mesh and screen drum systems, is considerably increased. Further features: ■ ■ ■ ■ Minimum deflection points Short fabric path in the area of the drum, trough and compensating roll Large roll diameter Low tension fabric transport through controlled single motor drives 4 spray pipes are arranged around the grooved drum and integrated into the circulating system. These ensure the extremely high washing efficiency at great circulating capacities. The drum surface forms the groove profile with a mesh covering. As the fabric passes through the spray section, it is supported by the drum surface and is thus unable to avoid the hydrodynamic water pressure. 17 Spray battery The spray battery with adjustable spray angle is decisive for the optimum washing effect, in addition to the grooved drum. The washing liquor is constantly circulated through the spray pipes within the compartment by means of a pump. This produces a cross-flow and a heavyflowing liquor film on both sides of the fabric. This ensures optimum mass transfer and removal of the substances being washed off. TRIKOFLEX Maximum washing efficiency through circulation and counter-flow A meandering liquor guidance principle, similar to that found in vertical washing machines, has been used for the first time in the TRIKOFLEX drum washing machine. The liquor guidance, in conjunction with the spray line mechanism, results in the high washing effect of the basic LT-DB model. Compared to the LT-DB, the washing effect of the TRIKOFLEX LT-DB 2 is increased by the addition of a second, independent circulation flow and bath separation. This bath separation allows the temperature of the liquor to be varied within the drum washing compartment. This is especially important for even fabric shrinkage. The washing effect of the TRIKOFLEX washing machine has been tested under production conditions. Results show a 40% increase in the washing effect attributable to bath separation and second circulation flow. TRIKOFLEX LT-DB 2 with two liquor circulations and bath separation TRIKOFLEX drum washing machine comparison, one (LT-DB), two circulation system (LT-DB 2) and EXTRACTA (DA 4) Co/LY 97/3% Twill 2/1 - 240 g/m2 V = 40 m/min T = 95°C Water: 4 l/kg Number of chambers 18 Shrinking with lowest fabric tension Continuous shrinking, desizing and washing of Filaments (PA 6.6, PET, PTT, PBT, PP) Multi-flexible pre-treatment and washing range for tension-sensitive fabrics Washing after Vat-printing Rinsing Washing after Disperse-printing Rinsing Washing after Reactive CPB, Dyeing Rinsing Oxidation Cold/Hot, Caustification Rinsing Of Viscose Washing after, CPBRinsing Bleach + Shock-bleaching Soaping Washing, Neutralizing, Rinsing Reductive cleaning Washing, Neutralizing, Rinsing Washing, Neutralizing, Rinsing Impregnation, Caustification Washing, Neutralizing, Rinsing Impregnation, Bleaching Washing, Neutralizing, Rinsing Washing, Neutralizing, Rinsing Washing after CPB-Bleach Use of the TRIKOFLEX drum washing machine is called for when fibre materials show a high shrinking potential or if an increased risk of creasing exists in a roller vat. Shrinkage occurs at the first contact with hot water. The rate and degree of shrinking is dependent on the temperature. Dimensional changes (length/width) in the fabric must not be inhibited during this stage of processing. The TRIKOFLEX makes processing at different temperatures possible within a washing compartment. The advantage is that a slow and even shrinking can be attained across the entire width of the fabric. The drive technology plays an equally important role in achieving an optimal result. TRIKOFLEX drums are controlled by rotary magnet motors, or tension control (load cells). 19 Should longer washing and dwelling times be necessary the TRIKOFLEX can be complemented with the EXTRACTA roller vat washing compartments. Larger fabric contents lead to longer diffusion times. A high degree of washing efficiency is guaranteed by separating the liquor in different chambers. REACTA Diffusion washing processes Washing in spray and reaction aggregates Efficient washing is of central importance during textile finishing and is defined by the factors mechanical action, time, temperature and water. Depending on the washing task the weighting of the individual factors varies. Often the term washing is only associated with dilution washing whose success essentially depends on the water temperature and mechanical washing action. On the other hand, reaction processes require a specific amount of time for the chemical reactions to take place. The fastness wash for obtaining wear-, wash-, or water fastness falls under the term diffusion wash. Objective of this washing process is to bring the unfixed residual dye in the core of the fibres to the fabric surface and to remove it. Here time and temperature are key factors. 20 Weighting of the factors that affect textile washing processes Machinery-related requirements and equipment for the diffusion wash Temperature Diffusion washing processes cannot be undertaken satisfactorily using common washing systems; the investment required is also excessive. The fabric content is not sufficient, to perform a soaping process for 2-8 minutes. Time-consuming washing processes can be performed significantly better in dwelling compartments. Fresh water Time For diffusion washing and reaction processes Benninger relies on roller bed dwelling compartments with additional spraying areas. The washing principle applied by Benninger is based on the principle of seeping wash, where liquor is applied to the textile substrate and slowly seeps through the fabric. Mechanical washing action Dilution wash caustic soda, salts, H2O2, emulsified oils Unlike storage racks, accumulator belts or chains, the roller bed used by Benninger has the major advantage that the pile of fabric is continuously in motion and is passed from roller to roller. The relative motion within the individual fibres and threads improves the penetration of the capillary spaces by the seeping water. Fastness wash (diffusion wash) reactive dye, etc. Reaction processes demineralisation, oxidation, neutralisation, emulsification 21 HYDROVAC Economic water removal with Vacuum Systems The Hydrovac vacuum technology is applied in situations where an efficient bath separation is required. Simultaneous to the extraction of water, lint, emulsified and dispersed contaminants, hydrolysed dyestuff and sizing agents are removed. At the same time, the possibility exists to separate this polluted liquor from the process water. The fresh water consumption is considerably reduced due to the increased degree of concentration that develops during the ensuing washing processes. Partial disposal of this highly polluted liquor can reduce waste water contamination (COD) considerably. Separator The cyclone separator with pre-separator and the newly developed air flow system guarantee optimum separation. 5 1 3 2 1 2 3 4 5 4 22 Suction tube Pre-separator Water separator Diaphragm pump Rotary pump Increased washing efficiency and simultaneously reduced impact on the environment Suction tube The conical construction prevents the accumulation of contaminant residues. The fabric is exposed to practically no friction at all as it passes over the slot opening, which is adjustable and easily accessible from above. Rotary pump blower The so-called ‘Roots’ pump is the most economic and efficient vacuum system available. Blower aggregate The noise reduction hood offers easy access to the blower aggregate and its various components, e.g. the suction silencer. Air control A secondary air adjustment valve is utilised to control the system (a frequency converter is used in some cases). The efficiency of a vacuum system is contingent upon the type of fibre and construction. The table below shows average rates of residual moisture achievable. The advantages at a glance: Acetate Acetate Filament ■ Cotton Lyocel/Tencell ■ Polyacryl Polyamide Filament ■ Polyamide Staplefibre Polyester Filament ■ Polyester Staplefibre ■ Polyester/Cotton Polyester/Viscose 65/35 ■ Polyester/Wool 55/45 Viscose Filament Viscose Staplefibre Wool 23 Partial flow recycling is achieved by separating the concentrated polluted liquor Removal of contaminated liquor from the process water enables increased washing efficiency Emulsified and dispersed contaminants are removed Especially suited to remove printing thickener and size High dewatering values particularly for synthetic fabrics Possibility for size recovery Locations Head office Uzwil, Switzerland Subsidiaries Mumbai, India Shanghai, China Zell, Germany Zittau, Germany Representative office Moscow, Russia The Swiss company Benninger has been the textile industrys leading partner across the globe for one hundred and fifty years with global branches and service representatives. Benninger develops and manufactures textile finishing and cord production ranges as well as providing complete system solutions. As the market leader Benninger will continue to rely on its comprehensive process know-how in order to be able to offer high-quality installations with excellent customer service. Benninger AG 9240 Uzwil, Switzerland T +41 71 955 85 85 F +41 71 955 87 47 [email protected] Benninger Zell GmbH Schopfheimerstrasse 89 79669 Zell i.W., Germany T +49 7625 131 0 F +49 7625 131 298 [email protected] www.benningergroup.com Benninger Zittau Küsters Textile GmbH Gerhart-Hauptmann-Strasse 15 02763 Zittau, Germany T +49 3583 83 0 F +49 3583 83 303 [email protected] Benninger AG Moscow Office Leningradsky pr-t 72 Bld. 4, Office 802 125315 Moscow, Russia T +7 495 721 18 99 F +7 495 721 30 84 [email protected] Benninger India Ltd. 415 /416 & 417 Sunshine Plaza Dadar (East) Mumbai 400 014, India T +91 22 4322 7600 F +91 22 4322 7601 [email protected] Benninger Textile Machinery Co. Ltd. Room 904, Tower A City Center of Shanghai 100 Zun Yi Road Shanghai 200051, P.R. China T +86 21 6237 1908 F +86 21 6237 1909 [email protected] You can feel it’s Benninger