Reconstruction of sugar factories
Ingehim proposes to reconstruct the diffusion section of the sugar factory for increasing the feed capacity. The reconstruction consists in replacing the existing apparatus with a continuous diffusion pulsating extractor (DPA) of a capacity of 1 to 6 thousand tons per day. The characteristics of DPA are presented in more detail in the Presentation and the Article.
Schematic diagram of the reconstructed diffusion section of a sugar factory using DPA.
1 – diffusion pulsating apparatus (DPA); 2 – chips scalder; 3 – chips heater; 4 – pulse creation subsystem; 5 – pulp-press section; 6 – juice heater; 7 – destructed chips catcher; 8 – belt conveyor; 9 – juice accumulator
The fundamental difference of the proposed apparatus from a traditional mechanical (column, rotary, screw, etc.) apparatus lies in the original patented method of technological transportation of beet chips (cossettes) through the apparatus in the absence of energy-intensive transporting devices. The specified performance is provided by the design and dimensions of the apparatus, the parameters of the pulsation effect from the external pulse creation system. The increased efficiency is ensured by an increased degree of extraction of target components due to countercurrent and non-stationary conditions of diffusion and heat exchange processes, maximum use of the working volume of the apparatus, reduction of oxidative and bacteriological processes, low dependence on the length of chips and their structural state (putrefaction, freezing, etc.), an increase in the purity and lightness of the diffusion juice and other advantages.
Comparative characteristics of diffusion apparatuses processing 6 thousand tons of sugar beets per day
|
Parameter name |
Diffusion apparatus type | |||
|
DPA Pulsating apparatus |
CDA Apparatus manufactured by BMA company |
RDA Rotary apparatus |
DS Screw apparatus |
|
| Aparatus type | column | column | rotary | double screw |
| Positioning | vertical | vertical | horizontal | at inclination |
| Chips transportation method | by pulsations | mechanical | mechanical | mechanical |
| Internal transporting elements | none | hollow shaft, counter blades | rotation of entire apparatus | double screw, counter blades |
| Sugar beet capacity, ton/day | 6000 | 6000 | 6000 | 6000 |
| Characteristics of beet chips, m/100g | 6-16 | 8-12 | 14-16 | 13-15 |
| Additional breaking of chips during operation | none | significant | insignificant | significant |
| Volume utilization factor | 0.9-0.95 | 0.65-0.7 | 0.4-0.45 | 0.55-0.6 |
| Zone of contact with air | none | minimum | maximum | medium |
| Diffusion time, min | 65-80 | 76-80 | 65-70 | 60-65 |
| Diameter of working zone, m | 6 | 8 | 6 | 8 – 9 (equival.) |
| Length of working zone, m | 15 | 20 | 43.5 | 35 |
|
Overall dimensions, m Height Length Width |
20 8 8 |
25 9 9 |
15 43.5 12 |
13.4 8.8 34.5 |
| Total power consumption, kW | 90 | 120 | 175 | 320 |
| Apparatus weight, ton | 180 | 300 | > 300 | >300 |
The use of DPA will significantly reduce capital (from 30 to 50%), energy (from 1.3 to 3 times) and operating costs, production floor space and labor inputs, and will increase the energy efficiency and profitability of the diffusion section.
For a final assessment of the scale of reconstruction and possible economic effect, it is necessary to conduct a technology audit of the diffusion section of the sugar factory.
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