Liquid Extraction Brochure

Heat pumpEvaporatorsHeat Pump EvaporatorsSystems Nearly as Perfect as Perpetual Motion MachinesThe Working PrincipleHeat pump evaporators operate on the basis of a compressor-driven refrigerant circuit. As the name indicates, the system “refrigerates” (or cools) on the low-pressure side while generating an equal amount of heat on the high-pressure side. Where refrigeration is the sole objective, such heat is normally dissipated into the ambient atmos-phere. Our heat-pump evaporators, in contrast, utilize both the heat out-put and the refrigerating capacity in a complementary manner: the heat generated is used for evapo-ration, while the “cold” output is simultaneously employed for vapor condensation. This explains the exceptional 90% ef? ciency of these evaporators. Apart from the power for the compressor, the plant requires no further energy input at all.Your AdvantagesWe offer three different type series as standard plants:Natural circulation: EVA Forced circulation: CON? x®Dryer: DRY? x®The essential advantages of this technology include:• 90% energy saving• The system needs only electric power as an energy source - no vapor, no hot water, etc.• No cooling water required• Completely autonomous sys-tems• Modular design• Pre-assembled in base frame• Pretested • Low boiling temperature under vacuum (< 50°C), therefore - suitable for heat-sensitive feed products - less corrosion - plastic heat exchangers can be used for hydrochloric and hydro? uoric acid concentration as wellSchulz+Partner GmbHSince its foundation in October 1994, Schulz+Partner GmbH, a process engineering company, has specialized in the treatment and regeneration of industrial process liquids. As a competent and experienced systems supplier, we design and implement customized solutions in accordance with your personal needs and requirements.Our main ? elds of expertise include:• distillation/evaporation• recti? cation/absorption• drying• crystallization• liquid-liquid extractionPilot plant:CON? x® 50EVA BASICNatural-Circulation Evaporator with Heat Pumppoint where it is still free-? owing so it can be easily discharged by the pump.The resulting vapour is trans-ferred to the condensation stage (2) through a vapour tube, to be condensed by a heat exchanger. In this process, the ? ash-cooled liquid refrigerant evaporates and the vacuum system discharges the resulting distillate.The evaporating vessel (1) fea-tures a tube-coil heat exchanger that transfers the condensation energy of the overheated gaseous refrigerant to the feed product on the high-pressure side.This type of plant is used for smaller volumes of process liquid and for simple tasks. More demanding tasks, such as solutions including the reprocessing of solid matter, can be better solved with the other type series mentioned above.Process DescriptionThe feed product (A) is drawn into the concentration stage (1) under level control. The vacuum required is generated by a vacuum system (3) consisting of a water-jet vacu-um pump and a forcing pump.On the high-pressure side, the overheated, gaseous refrigerant gives off condensation energy that is transferred to the feed product via a heat exchanger forming an integral part of the concentration stage (1). In this process, the feed product heats up and part of its water content evaporates, thus concentrating the product to a units EVA 30BasicEVA 60BasicEVA 85BasicEVA 120BasicEVA 150BasicEVA 190Basicevaporation capacity l/h 30 60 85 120 150 190speci? c energy consumption kWh/l distillate0,15 0,14 0,14 0,14 0,13 0,13operating pressure and temperature Pa 8000 8000 8000 8000 8000 8000°C 38 38 38 38 38 38power consumptionkVA 5 8 12 17 20 25length mm 1250 1350 1500 1750 2000 2500breadth mm 800 1100 1250 1400 1700 2000heigth mm 2000 2100 2200 2400 2500 2600waste heat kW/h 4 7 10 13 16 20EVA Basic type series:EVA 30 BASICFields of application EVAThin solutions• without solids• low viscosity• low boiling point eleva-tionDegreasing solutionsCooling lubricantsOil-emulsionsLye concentrationAcid concentrationSolventsWaste Water from the following productions:• Surface treatment• Circuit boards• Paper• Textile• Printing• Colors• Photo development• Chromating• Hard chrome plating• Laminating• PigmentsConcentrate extracts from:• Membrane process• Ion exchangers• Dialysis process• Electrolysis process• CentrifugesCON? x®Forced-Circulation Evaporator with Heat PumpThis forced-circulation evaporator is recommended if heating-surface deposits caused by evaporation must be prevented. Obviously, this is the right solution when reproc-essing crystallizing and deposit-forming liquids that easily lead to encrustations on the heating sur-faces. This unwelcome effect can be controlled – and at least delayed – by increasing the speed of the feed product circulation through the tube bundle. To this end, a circulating pump is used to deliver the product through an external heat exchanger into the ? ash ves-sel. The product is only moderately heated without boiling when pass-ing through the heat-exchanger, to be subsequently evaporated in the ? ash vessel. This minimizes depos-its and encrustations.This type series is also a better solution than its EVA natural-circu-lation counterpart when dealing with higher viscosities or when the process inevitably generates higher boiling temperatures.Optionally, this evaporator is available with an agitator.CON? x® type seriesunits CON? x® 50CON? x® 85CON? x® 120CON? x® 150CON? x® 190CON? x® 250CON? x® 290CON? x® 390CON? x® 490CON? x® 620evaporation ca-pacityl/h 50 85 120 150 190 250 290 390 490 620speci? c energy consumptionkWh/l distil-late0,18 0,16 0,15 0,15 0,15 0,15 0,15 0,15 0,15 0,15operating pressure and temperature Pa 8000 8000 8000 8000 8000 8000 8000 8000 8000 8000°C 38 38 38 38 38 38 38 38 38 38power consumptionkVA 9 14 18 23 29 38 44 59 74 93length mm 2200 2200 2300 3500 3500 3500 3500 4000 4000 4000breadth mm 1300 1500 1500 1700 2000 2000 2150 2250 2350 2350heigth mm 2500 2600 2700 2900 3100 3200 3300 3400 3500 3500waste heat kW/h 7 11 14 18 23 30 35 47 59 74Process DescriptionThe feed product is drawn into the concentration stage under level control. The vacuum required is generated by a vacuum system consisting of a water-jet vacuum pump and a closed cooling-water circuit.On the high-pressure side, the condensation energy of the overheated gaseous refrigerant CON? x®550 S EExMaterial: 1.4539; rubber-coated steelRefrigerant: R134a coolantDistillation capacity: 550 l/hTask: Recovery of white spirit (solvent naphtha), 2-stage plantOther dimensions up to 1400 l/h are available on requestMMM12345B A Cis transferred to the feed product via a tube-bundle heat exchanger. A circulating pump permanently circulates the product through the heat exchanger into the evapora-tor. Due to ? ash vaporization, the solvents partially evaporate in the process and the circulating liquid cools down. Thus, the feed product is continuously concentrated to the desired degree.The concentrate is automati-cally discharged with a pump under level control.The resulting vapor is delivered into the condensation stage (3) via a vapor tube. Vapor condensation is achieved through a tube-bundle heat exchanger in which the ? ash-cooled liquid refrigerant evapo-rates, thereby absorbing the heat of the vapor and condensing it in the process. The resulting distillate is dis-charged by the vacuum system as well.These plants can be operated either continuously or on a batch basis.CON? x®620 SMaterial: 1.4404Refrigerant: R134a coolantDistillation capacity: 620 l/hTask: Concentration of alkaline wastewaterFields of application CON? x®Solutions• With low solids content• low viscosity• low boiling point eleva-tion up to 10°CDegreasing solutionsCooling lubricants Oil-emulsionsLye concentrationAcid concentrationSolventsWaste Water from the following productions:• Surface treatment• Circuit boards• Paper• Textile• Printing• Colors• Photo development• Chromating• Hard chrome plating• Laminating• PigmentsConcentrate extracts from:• Membrane process• Ion exchangers• Dialysis process• Electrolysis process• CentrifugesMMM1234B ACDRY? x®Dryer with Heat PumpThis type series is ideal for process-ing media requiring an evaporator with agitator, as well as in cases where the concentrate must have a low residual humidity.Process DescriptionThe feed product is sucked into the dryer under level control. A vacuum system consisting of a water-jet vacuum pump and a closed cool-ing-water circuit generates the needed vacuum. On the high-pressure side, the condensation energy of the overheated gaseous refrigerant is transferred to the feed product via a double-walled heat exchanger. In the dryer, an agitator with wip-ers prevents encrustation of the product on the heat exchanger‘s surfaces.As a result of the energy input, part of the solvents evaporates.In this way, the feed product is evaporated and thereafter dried to the pre-determined level. The resulting vapor is delivered into the condensation stage (3) via a vapor tube. Vapor condensation is achieved through a tube-bundle heat exchanger in which the ? ash-cooled liquid refrigerant evapo-rates, thereby absorbing the heat DRY? x®15Material: 1.4539 Distillate capacity: 15 l/hFields of use: Various ef? uents containing Cr and Cl of the vapor (and condensing it in the process). The resulting distillate is dis char-ged by the vacuum system as well. The residual concentrate is re-moved via an opening on the front side of the plant.These plants are operated on a batch basis.DRY? x® type seriesunits DRY? x® 10DRY? x® 15DRY? x® 20DRY? x® 25DRY? x® 35DRY? x® 50evaporation capacityl/h 10 15 20 25 35 50speci? c energy consumptionkWh/l distillate0,25 0,25 0,20 0,20 0,20 0,20operating pressure and temperature Pa 8000 8000 8000 8000 8000 8000°C 38 38 38 38 38 38power consumptionkVA 3 4 4 5 7 10length mm 1500 1650 1800 1900 2000 2500breadth mm 1300 1500 1600 1700 1900 2250heigth mm 2000 2000 2100 2200 2300 2400waste heat kW/h 2 3 3 4 6 8Special TypesIn some applications, it is impor-tant to prevent direct contact be-tween the medium (or feed prod-uct) and metallic heat exchanger surfaces. While it is a theoretical possibility to have the metallic sur-faces of the heat exchanger tubes coated, this is not a feasible option in practice. Therefore, plastic heat exchangers are used in such cases.However, this requires an ad-ditional coolant circuit, which leads to a 10% higher energy input. Please note that the type series presented here are just a sample of our comprehensive product range. In fact, we routinely implement heat pump evaporators with distil-late capacities of up to 1,000 l/h. Special plants with explosion protection according to ATEX guidelines are also available. These are designed and implemented on a fully customized basis. Our plants are available in many different materials, such as• stainless steel• hastelloy, titanium, zirconium• PP/PE• PVDF/PFA• silicon carbide• graphiteServiceSchulz+Partner GmbH is a com-petent and experienced thermal systems supplier with a focus on customized solutions.We design, implement and service complete plants as well as individual process stages and single components in the ? eld of thermal process engineering. A safe and optimized plant design is ensured by computer simulation coupled with extensive testing in our lab and pilot plants. Moreover, we are dedicated to continuous further development and integration of innovative tech-nologies. This puts us in a position to satisfy the highest customer demands in the long term as well, combining economy with guaran-teed operational safety. In addition, Schulz+Partner GmbH provides valuable planning and after-sales services through its trained service team. For example, we help you clarify process engi-neering issues and will be at your side with competent advice and support should troubles occur with the control or refrigeration system. To this end, we offer customized service contracts that are available on a European scale.Especially in light of the growing importance of plant optimization, you can always count on us as your reliable partner.Fields of application DRY? x®Solutions• all kind• with solids• higher viscosityDegreasing solutionsCooling lubricants Oil-emulsionsLye concentrationAcid concentrationSolventsWaste Water from the following productions:• Surface treatment• Circuit boards• Paper• Textile• Printing• Colors• Photo development• Chromating• Hard chrome plating• Laminating• PigmentsConcentrate extracts from:• Membrane process• Ion exchangers• Dialysis process• Electrolysis process• CentrifugesSchulz+Partner GmbHVerfahrenstechnikIm Brunnenfeld 3D-79224 UmkirchTel +49 (0)7665 93 42 96-60Fax +49 (0)7665 93 42 96-70www.schulzpartner.cominfo@schulzpartner.comFields of Activity Evaporation• Heat pump evaporators• Falling ? lm evaporators• Circulation/Forced circulation evaporators• Evaporators with thermal or mechanical vapour compression• Thin ? lm evaporators• Short path evaporatorsCrystallization• Evaporation crystallisers• Cooling crystallisersDrying• Thin ? lm dryers,‘Combi’ dryer• Heat pump dryersRecti? cation - Absorption• Recti? cation columns, trays and packings• Absorption columns • RevampingLiquid-Liquid Extraction• Extraction columns, agitated and pulsed• Mixer-SettlersEngineering• Consulting• Laboratory/pilot tests• Process developments, simulations• Project evaluation• Basic and detail engineering• Installation planning 3D• Automation, measuring and control engineering• Procurement of materials • Erection and supervision• Start up• Operators instructionPlant construction• Turn key plants• Complete process units• Special apparatus• Plant equipmentsMaintenance – spare parts• Service contracts, especially for heat pump units• Spare parts express deliveryProcess wastes – Salt solutions – Organic liquids – Acids – Lyes – Pickling baths – Fermentation wastes – Solvents – Mineral oils – Land? ll ef? uentsaboeseTextfeldaboeseTeningen