What are the main energy consumption distribution links of the deodorization tower

Source：www.cnlongyu.cn Release date： 2026-09-21

Information summary：The vast majority of energy consumption in the deodorization section is steam, followed by cooling water/refrigeration power consumption, conveying pump power consumption, and equipment heat dissipation loss

The vast majority of energy consumption in the deodorization section is steam, followed by cooling water/refrigeration power consumption, conveying pump power consumption, and equipment heat dissipation loss
1. Heating steam for oil and fat (accounting for the majority)
The feed oil is heated to the deodorization temperature (230-250 ℃) and divided into two stages: oil oil heat recovery preheating+high-pressure steam heater reheating
The higher the heat recovery efficiency, the less steam is supplied for external heating; Without heat recovery, this part of energy consumption will significantly increase
Different oil products and feed temperatures result in significant differences in heat load; Palm oil and soybean oil require different amounts of heat
2. Vacuum system power steam (steam jet pump)
The power steam of multi-stage steam jet pumps is the second largest steam consumption item, used to maintain high vacuum inside the tower (usually<2 mbar)
The temperature of cooling water directly affects steam consumption: the higher the water temperature, the greater the steam consumption of the jet pump; Summer energy consumption is significantly higher than winter
Dry cooling/ice condensation vacuum system: steam consumption decreases, but refrigeration power consumption increases, indicating a shift in energy consumption structure
3. Direct steam stripping inside the tower (direct steam)
Dry saturated stripping steam sprayed into the oil phase, used for stripping free fatty acids, odorous volatile compounds
The usage of packed tower is low (oil weight 0.3%~0.6%), and the shallow tray tower is high; Excessive steam not only wastes energy consumption, but also increases the load on the vacuum system
Steam needs to be pre dried, and carrying water will increase the heating load
4. Cooling and refrigeration energy consumption (electricity+water)
1. Vacuum condenser circulating cooling water: cooling the steam and volatile substances discharged by the jet pump, power consumption of the circulating water pump, and power consumption of the cooling tower fan
2. Power consumption of refrigeration unit in cold capture/freezing system: Low temperature refrigerant captures fatty acids, reduces vacuum load, and consumes high power
5. Power consumption of power equipment
Feed pump, discharge pump, vacuum system water seal pump, circulating cooling water pump, cooling tower fan, vacuum pump matching motor
Under normal operating conditions, the proportion of electricity consumption to total energy consumption is much lower than that of steam
6. Heat dissipation and pipeline heat loss
Deodorization tower body, high-temperature pipeline, and heater surface heat dissipation; Insulation damage and localized cold walls will significantly increase energy consumption in this area
Weak insulation points such as valves, flanges, and manholes are the focus of heat loss
7. Auxiliary steam consumption
Steam pipeline heating, deodorization distillate (VOD) recovery system heating, steam condensate system, etc

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