CN217323796U

CN217323796U - Red mud washing water temperature raising device

Info

Publication number: CN217323796U
Application number: CN202220135765.6U
Authority: CN
Inventors: 金绍刚; 孙元林; 李海明; 王伟; 寇伟; 杨涛
Original assignee: Shandong Hongqiao New Material Co Ltd
Current assignee: Shandong Hongqiao New Material Co Ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-08-30
Anticipated expiration: 2032-01-19

Abstract

The utility model relates to a red mud washing water technical field, specifically a red mud washing water temperature raising device, including hot-water tank, double-pipe heat exchanger includes inner tube and outer tube, the access connection secondary steam and condensate pipeline of inner tube, the exit linkage evaporation workshop of inner tube, the access connection red mud washing water pipeline of outer tube, the export of outer tube passes through the pipe connection hot-water tank, the inner tube is S-shaped, the outer tube includes a plurality of festival section pipes, communicate through the connecting pipe between a plurality of festival section pipes, the festival section pipe box is established in the outside of inner tube, the both ends of festival section pipe pass through closing plate and inner tube sealing connection; the utility model discloses a secondary steam and the comdenstion water that produce the exhaust steam utilize, replace and utilize steam to heat the mode of carrying temperature to the hot-water tank, practiced thrift the energy, the cost is reduced.

Description

Red mud washing water temperature raising device

Technical Field

The utility model relates to a red mud washing water technical field specifically is a red mud washing water temperature raising device.

Background

In the sedimentation process in the existing alumina production process flow, red mud is flocculated into large particles by adding a flocculating agent in a first tank (a separation tank) and then is sunk to the bottom of the tank under the action of gravity, so that the separation of the sodium aluminate solution from the red mud is realized, but the sunk red mud still contains a certain amount of sodium aluminate solution and needs to be repeatedly washed by adding hot water, so that the content of the sodium aluminate solution in the red mud is reduced. In order to ensure the washing effect, the temperature of the water for washing the red mud is required to be more than 90 ℃, steam is required to be used for heating and temperature raising in a hot water tank, the steam consumption is high, and the washing cost is high.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a red mud washing water temperature raising device to it requires more than 90 ℃ to solve among the above-mentioned prior art red mud washing water temperature, needs to utilize steam heating to raise the temperature in the hot-water tank, and steam consumption is great, the higher problem of cost of washing.

In order to realize the above-mentioned purpose, the utility model provides a red mud washes water and carries temperature device, including hot-water tank, double-pipe heat exchanger includes inner tube and outer tube, the access connection secondary steam and the condensate pipeline of inner tube, the exit linkage evaporation workshop of inner tube, the access connection red mud of outer tube washes the water pipeline, and the pipe connection hot-water tank is passed through in the export of outer tube.

Further, the inner tube is S-shaped, the outer tube comprises a plurality of section tubes, the section tubes are communicated with each other through connecting tubes, the section tubes are sleeved on the outer side of the inner tube, and two ends of the section tubes are hermetically connected with the inner tube through sealing plates.

Furthermore, a red mud inlet pipe is arranged at the top of the hot water tank, and a red mud outlet pipe is arranged at the bottom of the hot water tank.

In the high-pressure dissolution process in the production process of the alumina, because the exhausted steam of the pipelining unit generates secondary steam and condensed water after high-pressure dissolution, and the temperature reaches more than 100 ℃, the utility model can utilize the secondary steam and the condensed water generated by the exhausted steam to exchange heat with the red mud washing water by arranging the double-pipe heat exchanger, so that the temperature of the washing water is increased to more than 90 ℃, and the requirement of the red mud washing is met; the sleeve heat exchanger is selected, has simple structure and convenient maintenance, can be manufactured by utilizing the existing materials in factories, and has good economical efficiency and practicability; the secondary vapour and the comdenstion water after the heat transfer still have certain waste heat, the utility model discloses with the exit linkage evaporation workshop of inner tube for secondary vapour and the comdenstion water after the heat transfer are at the further utilization in evaporation workshop.

The utility model discloses a secondary steam and the comdenstion water that produce the exhaust steam utilize, replace and utilize steam to heat the mode of carrying temperature to the hot-water tank, practiced thrift the energy, the cost is reduced.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic structural diagram of the present embodiment;

in the figure: 1. a hot water tank; 2. a double pipe heat exchanger; 21. an inner tube; 22. an outer tube; 221. a segment pipe; 3. secondary steam and condensed water pipelines; 4. a red mud washing water pipeline; 5. a red mud inlet pipe; 6. a red mud outlet pipe.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, according to the embodiment of the present invention, a red mud washing water temperature raising device is provided, specifically, comprising a hot water tank 1 and a double-pipe heat exchanger 2, wherein the top of the hot water tank 1 is provided with a red mud inlet pipe 5, the bottom of the hot water tank 1 is provided with a red mud outlet pipe 6, the double-pipe heat exchanger 2 comprises an inner pipe 21 and an outer pipe 22, the inner pipe 21 is S-shaped, the outer pipe 22 comprises a plurality of segment pipes 221, the segment pipes 221 are communicated with each other through a connecting pipe, the segment pipes 221 are sleeved outside the inner pipe 21, and two ends of the segment pipes 221 are hermetically connected with the inner pipe 21 through a sealing plate; the inlet of the inner pipe 21 is connected with a secondary steam and condensed water pipeline 3, the outlet of the inner pipe 21 is connected with an evaporation workshop, the inlet of the outer pipe 22 is connected with a red mud washing water pipeline 4, and the outlet of the outer pipe 22 is connected with a hot water tank 1 through a pipeline.

The utility model discloses a theory of operation is: red mud washing water in the hot water tank 1 is conveyed to a red mud washing water pipeline 4 through a water pump and then enters an outer pipe 22, secondary steam and condensed water enter an inner pipe 21 through a secondary steam and condensed water pipeline 3, the red mud washing water exchanges heat through a double-pipe heat exchanger 2, the temperature of the red mud washing water after heat exchange meets the requirement and enters the hot water tank 1 through a pipeline, and the secondary steam and the condensed water in the inner pipe 21 enter an evaporation workshop after heat exchange for further utilization; the red mud enters from the red mud inlet pipe 5 for a plurality of times and exits from the red mud outlet pipe 6 for a plurality of times of washing.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a red mud washes water and carries temperature device, includes hot water tank (1), double-pipe heat exchanger (2), its characterized in that, double-pipe heat exchanger (2) include inner tube (21) and outer tube (22), the access connection secondary steam and condensate water pipeline (3) of inner tube (21), the exit linkage evaporation workshop of inner tube (21), the access connection red mud of outer tube (22) washes water pipeline (4), the export of outer tube (22) passes through pipe connection hot water tank (1).

2. The red mud washing water temperature increasing device according to claim 1, wherein the inner tube (21) is S-shaped, the outer tube (22) comprises a plurality of segment tubes (221), the segment tubes (221) are communicated with each other through connecting tubes, the segment tubes (221) are sleeved on the outer side of the inner tube (21), and two ends of the segment tubes (221) are hermetically connected with the inner tube (21) through sealing plates.

3. The red mud washing water temperature increasing device according to claim 1, wherein a red mud inlet pipe (5) is arranged at the top of the hot water tank (1), and a red mud outlet pipe (6) is arranged at the bottom of the hot water tank (1).