Recovery cycles of distilation system

Regenerative cycles of distillation and rectification devices in the production of alcohol.

Let's look at an example of energy consumption (hot steam) by the brew and rectification columns at the 3000 dal plant.
The scheme of operation is shown in Fig. No.1
The total consumption of energy resources by two columns is: heat energy in the form of hot steam 42 kg / dal; cold in the form of recycled water 42 kW / dal.

 

Consumption of hot steam by columns (Distillation system - 3000)

The total steam consumption on a six-column distillation system is 3000 dal

* steam consumption depends on the strength of the brew and the operating mode of the epuration column

Mash column Epuration column Product-concentrating column The final purification column Rectification column Spin column
up to 19 kg / dal up to 8 kg / dal up to 23 kg / dal up to 8 kg / dal up to 4 kg / dal up to 4 kg / dal

Working with the use of a recuperative scheme (using secondary heat) allows you to save heat energy in the form of hot steam for heating the brew column and part of the energy for cooling the rectification column.

Consumption of hot steam on columns (Distillation system 3000-BTS Engineering)

Total consumption of steam on a six-column distillation system-3000 dal

* steam consumption depends on the strength of the brew and the operating mode of the epuration column

Mash column Epuration column Product-concentrating column The final purification column Rectification column Spin column
- - up to 4 kg / dal up to 8 kg / dal up to 23 kg / dal -

The total energy consumption of two columns in the recuperative scheme is:

  • heat energy in the form of acute steam 26 kg / dal;
  • cold in the form of recycled water 26 kW / dal.

That is, the savings only on the use of recovery on a bundle of Rectification column-Mash column is:

  • heat energy in the form of acute steam 20 kg / dal;
  • cold in the form of recycled water 16 kW / dal.