A high-efficiency two-way flow plate type lifting film evaporator

Abstract

The invention discloses s bidirectional flow plate type film lifting and falling evaporator. The evaporator comprises a sheet bar bundle used for heat exchange; the sheet bar bundle comprises sheet bar units which are stacked and arrayed; each sheet bar unit comprises a first sheet bar, a second sheet bar, a third sheet bar and a fourth sheet bar which are arrayed in sequence; a material film lifting channel, a vapor channel and a material film falling channel are formed among the sheet bars in sequence at intervals; openings with corresponding positions are formed in the left and right sides of each sheet bar; the openings respectively form a saturated vapor passage, a non-concentrated material passage, a concentrated solution and secondary vapor passage and a condensate water and incondensable gas passage, as well as a passage used for passing of the concentrated solution and the secondary vapor during a process; the passages in the same sides of the sheet bars form a set of evaporating condensation system. According to the invention, the bidirectional flow is adopted for evaporating condensation; evaporating concentration of different materials can be conducted at the same time; material treatment capacity in unit time is improved; double film lifting and falling evaporating condensation is adopted to enable the vaporization efficiency to be improved; meanwhile, space of the equipment is saved.

Description

technical field [0001] The invention belongs to the technical field of heat exchangers, and in particular relates to a high-efficiency two-way flow plate type lifting film evaporator. Background technique [0002] As an advanced evaporation and concentration equipment, the plate evaporator is mainly used to evaporate the water in the dilute material through the transfer of the high temperature enthalpy of the steam, so as to obtain the concentrated material, and is widely used in the chemical and pharmaceutical industries, such as organic Purification of acids, amines and alcohols, etc. Used in the food and beverage industry, such as the concentration of dairy products, fruit juices, sugar, etc. It is also used in the natural organic product industry, such as fermentation industry, evaporation of glue, viscous water, etc. It is also used in the evaporation and concentration of black water in the paper industry. With the continuous development of industrial modernization t...

AI Technical Summary

Problems solved by technology

[0004] In the existing plate-type lifting film evaporator, the plate design structure determines the flow direction of saturated steam, condensed water, evaporated fluid material, evaporated material fluid and secondary steam, and each plate has only one saturated steam inlet, One material concentrate and secondary steam outlet, one untreated material inlet and one condensed water outlet, and the lifting film evaporator can only process one material, and the processing capacity per unit time is small, the steam utilization rate is low and the evaporation rate is low. low efficiency

At the same time, the lifting film evaporator also has the problem of low pressure bearing capacity.

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