SU430864A1 - MULTI-STAGE DISTILLATION CATV TV rtl (! Ii -1 f * - '! P "^ GET? ^ 5' FupD eaU: ii.: R'l.": - Google Patents

Description

one

The invention relates to distillation apparatus used for coicentrin and solutions in the chemical industry and in nonferrous metallurgy, as well as for desalination of saline water by the method of styling, purification of waste and mine water.

Known are the multistage distillation apparatuses of instantaneous skimming, containing horizontally iKoipnyc, divided by vertical (partitions into evaporation chambers, heat exchangers installed in each chamber and condenser tubes).

Since the pressure in the chambers is different, in order to exclude WHO | CAN | Pressure equalization between the chambers, the solution overflow occurs through hydraulic locks or through throttling devices. At the same time, the pressure differential between the chambers is used only to overcome the resistance of the hydrazate thieves or throttles and is not used at all for transporting the evaporated solution relative to (along) the surface area of the exchange.

In order to reduce the specific consumption of the heating lar in the proposed apparatus, the annular space of the heat exchanger of each packing chamber is connected with a pipe with a heater and a container of the previous chamber.

In the drawing from b; the proposed apiarat is significant;

The apparatus consists of corus 1, divided by vertical partitions 2 into evaporation chambers A, B, C, D, condenser tubes 3, heat exchangers 4, end of condenser 5, trubolro; water into 6 secondary vapor and overflow threshold 7.

The device works as follows.

The original paiCTBOp is heated in steps, in the condenser tubes 3 and through the heat exchanger 4, heated by fresh steam, enters chamber A, where part of it evaporates. The partially dissolved solution is poured over the threshold 7 and due to the pressure difference between the neighboring chambers, through the heat exchanger 4, it is also heated by fresh steam into the chamber B, where subsequent evaporation occurs. Similarly, the solution from chamber B flows into chamber B through heat exchanger 4, now heated by secondary steam chamber B, etc. Later on, the heat exchangers 4 of each stage are heated with a second stage pair. Thus, the secondary vapor of each evaporation stage is used to heat the solution in condenser tubes 5 and to heat the heat exchanger 4 of the subsequent cTyneiini. In the final evaporation stage, part of the secondary steam is heated in the initial solution in condensate tubes 3, and the remainder of the secondary vapor is postulated on the condenser 5. Steamed solution otv: one after the last vaporization column.

Subject and purpose of

Multi-stage distillation: an automated booster unit containing a horizontal housing, divided by vertical barriers into evaporation chambers, installed. the shell side of the shell of each tube: the subsequent chamber is connected to the steam pipe of the previous chamber.

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