EVAPORATOR Russian patent published in 2005 - IPC

FIELD: evaporation technique; chemical, nuclear, dairy, food-processing, wood-pulp and paper industries.

SUBSTANCE: proposed evaporator includes heating chamber with vertical heat exchange tubes arranged inside it and secured in tube sheets, separator, upper solvent chamber, unit for introducing and smoothly distributing the product to be evaporated which is made in form of film laid over heat exchange tubes; this unit is located in solvent chamber; evaporator is also provided with unit for introducing the vapor and product to separator, vapor inlet pipe union, branch pipe for discharge of separated product from separator, condensate and fixed gas outlet and inlet pipe unions. Upper tube sheets is divided into two parts by means of vertical partition; each part is provided with similar number of heat exchange tubes located in mirror image relative to vertical partition; first half of heat exchange tubes is connected with unit introducing and smoothly distributing the product to be evaporated which is made in form of film; lower ends of tubes located in mirror image are interconnected by means of passages. Unit for introducing the vapor and product into separator is made in form of separate branch pipes; one end of each said branch pipes is secured on upper end of respective heat exchange tube of second half of these tubes; other end is tangentially connected with separator.

EFFECT: extended functional capabilities due to evaporation of solution of foaming agents due to tangential delivery of product to be evaporated to evaporator divided into separate flows.

2 dwg