Full forced circulation type evaporator

A technology of forced circulation evaporation and forced circulation pump, which is applied in the direction of alumina/hydroxide, etc., can solve the problems of high cost, low production capacity, high steam consumption, etc., and achieve the effect of improving heat transfer effect, high production capacity and low investment

Active Publication Date: 2009-03-25
GUIZHOU BRANCH CHINA ALUMINUM IND
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a full forced circulation evaporator structure so that the existing evaporation equipment can be modifi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Full forced circulation type evaporator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Embodiments of the present invention: the present invention is a full forced circulation evaporator, and its full name is a full forced circulation countercurrent four-effect operation evaporator group. The so-called full forced circulation means that each effect in a group of evaporators is equipped with a forced circulation pump; the so-called countercurrent operation refers to the flow direction of the evaporated solution during the production and operation of a group of evaporators (such as: IV effect → III effect → II effect → I effect → self-evaporator) and the flow direction of heating steam (new steam → I effect → II effect → III effect → IV effect → water cooler) are completely opposite.

[0016] Transformation is carried out on the basis of the original externally heated natural circulation (tube type) evaporator (four-effect countercurrent operation): that is, the boiling chamber 5 includes a feed inlet 1, a feed outlet 2, a secondary steam outlet 7, and a hea...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a completely mandatory circulation evaporator which comprises a boiling chamber (5) and a heating chamber (4); the boiling chamber (5) is provided with a feed inlet (1), a feed outlet (2), and a secondary steam export (7); the heating chamber (4) is provided with a heating tube array (13); the upper parts of the boiling chamber (5) and the heating chamber (4) are connected by an upper circulating tube (9), and the lower parts thereof are connected by a lower circulating tube (3); the lower circulating tube (3) at the lower part of the boiling chamber (5) is connected with a forced circulation pump (2); the internal upper part of the boiling chamber (5) is provided with a deflection baffle (8) and a flow around baffle (10); the internal lower part of the boiling chamber (5) is provided with a extinction vortex cross baffle (11); and a guiding plate (12) is arranged in the lower circulating tube (3) which is connected with the lower part of the heating chamber (4). The invention is used for transforming the original external heating type natural circulation (tube type) evaporator (four-effect countercurrent operation), has saved investment and rapid efficiency, as well as high production capacity, and is difficult to cause the heating tube to be fouled and obstructed.

Description

technical field [0001] The invention relates to an evaporation device in alumina production. Background technique [0002] In the current alumina production process, the equipment used for evaporating mother liquor generally includes: plate falling film evaporator, tube falling film evaporator, external heating natural circulation (tube) evaporator and forced circulation (tube) evaporator )Evaporator. Among them: falling film evaporator and forced circulation evaporator have high production capacity and low steam consumption; externally heated natural circulation (tube) evaporator has low production capacity and high steam consumption. However, due to the high investment cost and long construction period of the falling film evaporator, it is suitable for new evaporators. The forced circulation evaporator is suitable for the transformation of the old external heating natural circulation tube evaporator, which will not affect the production, but also has the advantages of lo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01F7/02
Inventor 刘建钢柳健康王奎龚智远刘毅何在平李长江蒋贵书伍良渝卢志勇刘昌洌胡哲林周江筑
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap