Start News The heater in working conditions
The heater in working conditions | Print |
10.11.2010
There were successfully completed the first official tests of the GEA-BOX plate heater delivered by Wiedemann Polska to Gorodieya sugar factory in Belorus. The heater impresses with both the size and the sufficiency. The delivery of the heat exchanger is a part of the project carried out by Wiedemann Polska and aimed on refurbishment and enlarging this sugar factory.
 
The working conditions achieved during two tests carried out on Sept. 20th, and Oct. 28th, are presented in the below table.
 

GEA BOX technical parameters

 designed

achieved in 2010 campaign
units val. test no.1 20.09 test no.2 29.10
Target throughput t/d 10000    
2010 throughput t/d 8000 ~8000 ~8000
Diffusion juice flow m3/h 428 374 330
Diffusion juice Bx at inlet OBx 18 ~12,5 14,8
Pan vapour pressure kPa 19 15 13
Pan vapour temperature OC 58 54 51
Diffusion juice temperature going in OC 18 22 30
Diffusion juice temperature going out OC 52 52 49
Flow resistance        
- vapour Pa 9,3 not checked not checked
- juice kPa 78 not checked not checked
Heat exchange MW 16,3* 12,5 6,9
*the maximum value at the cossettes temperature of c. +3 st. C
 
The GEA-BOX heater was placed prior to the preliming in order to heat diffusion juice up to the temperature of preliming but only with the waste heat from pan vapours. Results of tests shown in the table confirm that the heat exchange coefficient determined by GEA of K 1600 W/m2K is achievable. Below there is a heater installation sketch.
 
 
GEA-BOX DESIGN PARAMETERS
- heat exchange area: 566 M2
- spacing between plates
- in juice: 12 mm
- in vapours: 12 mm
- stainless steel sheet plate thickness: 2 mm
- plate overall size (BxH) ~2,5x3,6m
- the maximum load when filled with water: 42 T