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falling film evaporator with mechanical vapor recompression, part of a Zero Discharge System (ZLD). The Evaporator includes the following major components: the evaporator, a circulation pump, a compressor, the deaereator, a distillate system, the feed heaters, and associated pumps. Each evaporator shares a common feed tank and seeding system. This evaporation system was previously used in a Zero Discharge System by a major Utility company. It was designed and engineered by Bechtel, and utilizes a seed-slurry process to maintain heat transfer tubes in a scale controlled manner. The process has been maintained in excellent shape.
Type: Evaporator
Subtype: Rising/Falling Film
Condition: Used
Material: Stainless Steel 316
Total Heat Transfer Surface Area: 17.3 m² (186.2 ft²)
Orientation: Vertical
SMS vertical single effect falling film evaporator, c/steel heads pressure shell side 5.5/8 bar @ 160/170 degrees C (190 liter) tube side vacuum @ 45/145 degrees C (160 liter), Shell dimensions: 368mm diameter x 8mm
Pressure: 8 bar (116 psi). Temperature: 170 °C (338 °F). Vacuum: Yes.
Type: Evaporator
Subtype: Rising/Falling Film
Manufacturer: Wiegand/Becker
Condition: Used
Material: Stainless Steel Austenitic
Clad: Yes
Evaporation Rate: 100 kg/h (220.5 lb/h)
Total Heat Transfer Surface Area: 3.8 m² (40.6 ft²)
single effect falling film evaporator system, product feed approximately 300 kg/hr @ 20 degrees C, product output approximately 200 kg/hr @ 50 degrees C, system includes:
shell -1/3.2 bar @ 150 degrees C (66 liter),
220mm diameter 316 stainless steel (1.4571) shell, with expansion bellows, insulated and clad,
(1) 300 liter 316 stainless steel (1.4571) vertical jacketed separator vessel, manufactured by Wiegand/Becker, pressure internal -1/3.2 bar @ 150 degrees C, jacket: -1/3.2 bar @ 150 degrees C, 508mm diameter x 1500mm straight side
insulated and clad,
(1) 316 stainless steel (1.4571) tube, shell and head vertical preheater/condenser,
manufactured by Wiegand/Becker, serial #3681,
pressure tubeside -1/3.2 bar @ 150 degrees C (46 liter), shell -1/3.2 bar @ 150 degrees C, (5.6 liter), 140mm diameter x 4m long 316 stainless steel shell, (2) 316 stainless steel (1.4571) bolt dished heads, mounted on lugs, insulated and clad,
(1) 316 stainless steel(1.4571) tube, shell and head vertical condenser, manufactured by Wiegand/Becker,
serial #3682, pressure tubeside -1/3.2 bar @ 150 degrees C (61 liter), shell -1/3.2 bar @ 150 degrees C (25 liter), 168mm diameter x 3944mm long 316 stainless steel shell. (2) 316 stainless steel (1.4571) flat heads, Mounted on lugs, insulated and clad,
(3) 316 stainless steel(1.4571) centrifugal circulation pumps, manufactured by Fristam/Stamp, (1) pump is a type FP712/120KF and (2) are type FP712/130KF, 1.1 kW/2900 rpm, openings DN40/PN16 inflow and (1) DN40/PN16 outlet
driven by 1.1 kW, 220-380V/50 Hz/ 2840 rpm, ex proof (T3) motor, mounted on baseplate;
Other ancillaries include, carbon steel framework, control panel, miscellaneous stainless steel pipework,
Pressure: 3.2 bar (46.4 psi). Temperature: 150 °C (302 °F). Vacuum: Yes.
Type: Evaporator
Subtype: Rising/Falling Film
Condition: Used
Material: Stainless Steel 304
Evaporation Rate: 7,257 kg/h (16,000 lb/h)
double effect evaporation system. See video of system operating at http://www.youtube.com/watch?v=Y6J52r-maPE. Capacity based on a brine stream at 24% to 50% strength. Feedstock of 32,000 lbs/hr(normal operating) or up to 50,000 lbs./hr. brine at ~ 20-25% NaBr is sent to the first effect, where it is strengthened to ~ 35% NaBr. The steam generated from this effect is used for heating on the second effect. Final target for brine leaving the second effect is 45-50% NaBr. The first effect (IPP Stock # 216077) (drum type)t is 2,000 gallon, and is manufactured by Paget. With a 400 sq.ft. "U" tube heater, this unit is operaing at 310 degrees F using 150# steam. The second effect is a modular, forced circulation system, designed by Swenson and manufactured by Four Corp. This effect is operating at atmospheric pressure and using the steam generated from the first effect to heat the second effect 838 sq. ft shell and tube heater(reboiler, IPP Stock # 216082). Overheads are condensed (IPP Stock # 216085). Product at ~ 50% NaBr is sent to storage. Circulation is acheived by a Goulds 6,000 gpm centrifugal pump. The first effect is a stand alone unit, the second effect is a modular system with all equipment mounted with in it's own framework. Instrumentation by Rosemount.
Type: Evaporator
Subtype: Rising/Falling Film
Manufacturer: Paget Equipment
Condition: Used
Material: Stainless Steel 304
Evaporation Rate: 2,268 kg/h (5,000 lb/h)
Total Heat Transfer Surface Area: 67.4 m² (725 ft²)
72" OD x 111 straight side 2000 gallon capacity "U" tube heater Size 35-42 Channel head is CS Vessel includes Koch style 931 6" thick denmister. Bundle is 36" x 5', Channel head is CS. Channel head is CS.
Orientation: Vertical. Pressure: 10.3 bar (150 psi). Temperature: 232.2 °C (450 °F). Vacuum: Yes.