Solvent recovery

Characteristics of the project

The design, selection of equipment, installation and operation are expected to comply with the requirements of ATEX directives - Directive 1999/92/EC (intended for operators) and 2014/34/EC (intended for manufacturers and their products). ATEX Directive for manufacturers and their products 2014/34 / EU

The technological scheme of solvent regeneration is selected, which provides for the separation of water and dry organic substances from it by distillation (strengthening) to certain concentration and quality indicators.

The non-regenerating solvent is pumped to the plate (power plate) of the regeneration column, where the distillation process takes place (removal of ethanol and oxygen-containing compounds). Vapors enriched with a highly volatile component are fed to the heat exchanger to completely condense them forming a distillate. The heat exchanger 2 performs the role of a catcher to prevent losses of highly volatile component with non-condensed gases. The distillate that was formed in the water is fed to the phlegm collection. To prevent loss of highly volatile component from the collector, they are fed to the heat exchanger. The distillate that was formed in the water is fed to the reflux drum. From the lower part of the regeneration column, the still residue is removed, which is sent to the sewer by a pump. Heating of the regeneration column is carried out through a steam boiler with forced circulation of the still residue. A centrifugal pump is installed for circulation. To maintain the concentration of distillate within the specified limits, a certain amount of distillate vapor is supplied to the upper plate of the regeneration column by a pump. The pump selects the regenerated solvent from the reflux drum, which is returned back to the main production.

Before entering the feed plate of the regeneration column, the non-regenerated solvent is heated to the set temperature in plate heat exchangers with regenerated solvent from the reflux tank). (cubic residue from the bottom of the regeneration column), respectively. The regenerated solvent is cooled to the set temperature in plate heat exchangers, (not regenerated solvent) (propylene glycol from the chiller), respectively.

For heating columns steam installed direct steam collector. All steam condensate that is formed in the boiler is turned into the boiler room.

Cooling water is supplied to all heat exchangers from the pressure collector of recycled water, and the discharge is through the collector of recycled water.

An artesian water collector is installed for preparing CIP solutions and washing equipment

Pectin is a water-soluble substance found in the cellular juice of fruits and vegetables. It has important biological properties. It contains free hydrocarboxylic groups of galacturonic acid, which are able to bind heavy metals into insoluble complexes with subsequent excretion from the human body. It is used for the production of jams, marmalade, pastilles, jams, confitures, as well as to increase the viscosity of juices.

When processing apples, the juice with pomace gets a lot of nutrients. 20% of pomace is processed into pectin. The pomace is crushed and passed to the extractor. In the extractor, soluble substances are extracted with hot water acidified with sulfurous acid. After separation, the solid fraction is pressed, and the liquid fraction is processed with enzyme preparations. Then the resulting pectin solution is precipitated with 95% ethyl alcohol, acidified with hydrochloric acid. The resulting pectin precipitate is filtered, dried and crushed. The filtered ethanol solution is regenerated for reuse.

The company "BTS-engineering" has developed and installed a unit for the regeneration of ethyl alcohol in the production of pectin OOO "TV-FRUIT". The solvent (ethanol) recovery unit is an element of the pectin production line from the waste of the apple juice (concentrate) production line. The technological scheme of solvent regeneration is selected, which provides for the separation of water and dry organic substances from it by distilling (strengthening) to certain indicators of the concentration and quality of ethanol.