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A double-stage scraper evaporator

A scraper type, evaporator technology, applied in the field of double-stage scraper type evaporator, can solve the problems of coking and scaling, and achieve the effect of improving production efficiency and heat transfer coefficient

Active Publication Date: 2018-10-12
WUXI PROFESSIONAL COLLEGE OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems that existing natural circulation evaporators deal with concentrated high-viscosity materials or liquid materials containing suspended particles, such phenomena as coking and fouling may occur, the present invention provides a double-stage scraper-type evaporator, which has a simple structure and can effectively Prevent coking and scaling, improve production efficiency

Method used

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  • A double-stage scraper evaporator
  • A double-stage scraper evaporator
  • A double-stage scraper evaporator

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Embodiment 1

[0018] Such as Figure 1~Figure 3 As shown, the present invention includes an evaporation cylinder, a motor 1, and the motor 1 is connected to the end of the rotating shaft 3 extending into the evaporation cylinder through a belt pulley 2 and a coupling, and the outer wall of the evaporation cylinder between the demister 4 and the distribution plate 5 There is a feed inlet 6, and a discharge outlet 7 is provided at the bottom of the evaporation cylinder, and the discharge outlet 7 is conical; the upper end of the evaporation cylinder is provided with a secondary steam outlet 8, and the rotating shaft 3 below the secondary steam outlet 8 The upper part is provided with a demister 4, a distribution plate 5, and an upper scraper assembly in sequence to form an upper evaporation chamber 9. The demister 4 includes a centrifugal separator and a wire mesh trap, and the centrifugal separator is set on the wire mesh trap. The lower layer; the distribution plate 5 is set on the rotating...

Embodiment 2

[0022] The scraper 16 is in contact with the inner wall of the evaporating cylinder to form a scraper-type evaporating cylinder. The edge of the scraper 16 is inlaid with a wear-resistant layer. Scale, crystallization, and can also reduce the requirements of cylinder ovality and shaft installation concentricity.

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Abstract

The invention provides a double-segment scraper type evaporator which is simple in structure and capable of effectively preventing coking and scaling and improving the production efficiency. The double-segment scraper type evaporator comprises an evaporation cylinder and a motor, the motor extends to the end of a rotating shaft in the evaporation cylinder through matching connection of a belt pulley and a coupler, the upper end in the evaporation cylinder is provided with a secondary steam outlet, and a mist eliminator, a distribution plate and an upper scraper assembly are sequentially arranged on the portion, below the secondary steam outlet, of the upper portion of the rotating shaft to form an upper-segment evaporation chamber; a lower scraper assembly is arranged on the lower portion of the rotating shaft, a balancer is connected to the bottom end of the rotating shaft, and therefore a lower-segment evaporation chamber is formed.

Description

technical field [0001] The invention relates to a liquid material evaporation machine, in particular to a double-stage scraper type evaporator. Background technique [0002] In the chemical industry, pharmaceutical industry, and biological industry, it is often necessary to heat the solution to boiling to vaporize and remove part of the solvent to increase the concentration of the solution or to concentrate the solution to saturation to precipitate the solute. This evaporation project has always been It is an important part, and it is also an important unit operation for separating volatile solvents and non-volatile solutes, that is, to concentrate the solution for crystallization and obtain products. The natural circulation evaporator is heated outside the heating chamber. The steam makes the solution heated and boiled, and the density difference is caused by the temperature difference, forming a natural circulation, but this evaporator is only suitable for solutions that a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D1/22
CPCB01D1/226
Inventor 张平亮
Owner WUXI PROFESSIONAL COLLEGE OF SCI & TECH