Low Temperature Vacuum Evaporator
The low temperature vacuum evaporator vaporizes water at lower temperature around 40 Deg. C than normal 100 Deg. C due to vacuum.
Working Principle
The low temperature vacuum evaporator mainly consists of an evaporator tank 2, evaporator heat exchanger 4, process water circulation pump 3, refrigerant compressor 8, condenser heat exchanger 7, distillate tank 11, vacuum producing venture 13, and distillate circulating pump 12. The feed water enters the evaporator tank 2, and the feed water is circulated by the pump 3 to evaporator heat exchanger 4, where the feed water is heated by high pressure refrigerant from the refrigerant compressor 8. The hot water flashes as water vapor into the evaporator tank at the top. This water vapor passes through the mist eliminator 16 and the condenser heat exchanger 7. The refrigerant from the evaporator heat exchanger passes through air cooler and expansion valve and becomes cool liquid. The cool refrigerant cools the hot water vapor to distillate. The distillate is collected in the distillate tank. The distillate is circulated by the distillate circulation pump through a venture, which produces vacuum in the evaporator tank. The vacuum produced by the venturi in the evaporation tank causes process water boils between 40 to 50 Deg. C. The concentrated process water from the evaporator tank and the distillate from the distillate tank are automatically drained by the electrical controls. All necessary controls and switch gears are part of the system.
Advantages and features
Applications of 3R Low Temperature Vacuum Evaporators
| INDUSTRIES | APPLICATION |
| Surface Treatment and Electro-Plating |
Recovery of Chrome, Nickel, Copper etc. from Rinse baths, Recovery and reuse of Pickling and Phosphoric acids, Concentration of Degreasing, Painting, Scrubber exhaust liquids. |
| Mechanical, Die-Casting, Heat Treatment | Separating water from Coolant and cutting Oil Emulsions, Emulsions and cooling fluids from continuous wire drawing and rolling mills, Recovery of Glycols, lubricants and Heat treatment salts. |
| PCB and Microelectronics | Recovery of copper and Concentration of Etching acid (HF) solutions and wastewaters. |
| Auto Component, Precision Electrical & Electronic Components, and Integrated large industries | Surface Treatment, degreasing, pickling, Painting, Cooling fluids, waste oils, scrubber solutions, Rejects of RO, Ion Exchange, Softener systems, High TDS effluent of End of Pipe ZLD solutions |
| Jewelry | Recovery of precious metals like Gold, Silver, Platinum etc. from process waste waters |
| BIO-DIESEL | Solvent recovery from process liquor |
| Pharmaceutical and Fine Chemical | Recovery of Solvents, heat sensitive active agents, and treatment and volume and COD reduction of wastewaters from chemical, wine, food and pharmaceutical industries |
| Herbal and Medicinal Extraction, & Essential Oils | Low Temperature Evaporation at less than 30 Deg.C for extraction of Bio-Active Extracts, Essential Oils, etc. |
| POWER Generation and Petro-Chemical Trade Effluents |
Concentration of high COD mixed effluents, Recovery of 95% water for reuse |
STANADARD MODELS - 3R Low Temperature Vacuum Evaporators
| 3R VE - 50 | 3R VE - 100 | 3R VE - 150 | 3R VE - 250 | 3R VE - 500 | 3R VE - 1000 | ||
| Evaporation Rate | LPH | 50 | 100 | 150 | 250 | 500 | 1000 |
| Input Power | kW | 12.5 | 22 | 30 | 46 | 90 | 180 |
| Boiling temperature | °C | <40 | <40 | <40 | <40 | <40 | <40 |
| Concentration Ratio | 1/10 : 1/40 | 1/10 : 1/40 | 1/10 : 1/40 | 1/10 : 1/40 | 1/10 : 1/40 | 1/10 : 1/40 | |
| Vacuum | mmHg | 700 mm Hg | 700 mm Hg | 700 mm Hg | 700 mm Hg | 700 mm Hg | 700 mm Hg |
| Refrigerant | R22 / R134a | R22 / R134a | R22 / R134a | R22 / R134a | R22 / R134a | R22 / R134a | |
| Voltage x Frequency | V x Hz | 440V x 50 Hz | 440V x 50Hz | 440V x 50Hz | 440V x 50Hz |
440V x 50Hz |
440V x 50Hz |
| MOC – Heat Exchanger Tubes | SS 316 Ti | SS 316 Ti | SS 316 Ti | SS 316 Ti | SS 316 Ti | SS 316 Ti | |
| MOC - Vessels | SS 316 L | SS 316 L | SS 316 L | SS 316 L | SS 316 L | SS 316 L | |
| MOC - Piping | SS 316 / CPVC | SS 316 / CPVC | SS 316 / CPVC | SS 316 / CPVC | SS 316 / CPVC | SS 316 / CPVC | |
| MOC - Pumps | SS 316 / SS 304 |
SS 316 / SS 304 |
SS 316 / SS 304 |
SS 316 / SS 304 |
SS 316 / SS 304 |
SS 316 / SS 304 |
|
| Length | mm | 2500 | 3500 | 4000 | 5000 | 6000 | 9000 |
| Width | mm | 1250 | 1500 | 1500 | 1500 | 2000 | 2500 |
| Height | mm | 3500 | 3500 | 3500 | 3500 | 3500 | 3500 |
