CN201942527U - High-pressure digestion device for diaspore - Google Patents
High-pressure digestion device for diaspore Download PDFInfo
- Publication number
- CN201942527U CN201942527U CN2010206721400U CN201020672140U CN201942527U CN 201942527 U CN201942527 U CN 201942527U CN 2010206721400 U CN2010206721400 U CN 2010206721400U CN 201020672140 U CN201020672140 U CN 201020672140U CN 201942527 U CN201942527 U CN 201942527U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- indirect heating
- diaspore
- stop
- heating apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The utility model discloses a high-pressure digestion device for diaspore, which comprises a pipeline indirect heating device (1), wherein the front end of the pipeline indirect heating device (1) is connected with a high-pressure pump (2); the rear end of the pipeline indirect heating device (1) is connected with a remaining pipeline (3); and the rear end of the remaining pipeline (3) is connected with a next process. With the adoption of the pressure digestion device, the flow is simplified; the construction investment is saved; the reaction speed is accelerated; the digestion and remaining time can be shortened by about 50%; the heat transfer efficiency is improved; the resistance loss of the pipelines is lowered; the aim of saving the motive (electric) power is achieved; the pipelines are convenient to wash; the labor intensity is reduced; and the pressure digestion device is beneficial for industry and environment protection.
Description
Technical field
The utility model relates to a kind of diaspore high pressure dissolving device, belongs to the diaspore technical field of the bayer's process alumina producing mesohigh stripping that is raw material.
Background technology
Therefore the characteristics of diaspore are indissolubles, when the bayer's process stripping, require to adopt higher temperature (260 ℃～280 ℃), long dissolution time and higher caustic sodium concentration.The method that now is used to produce mainly contains two kinds:
First kind is that pipeline preheating machinery mixing chamber connects heating autoclave stripping method
This method adopts 5～6 grades of pipeline indirect heaters, raw pulp is preheating to 160～170 ℃, enter the autoclave reheat then to about 260 ℃ of stripping temperature, and then in autoclave, stop stripping 40～60 minutes, though this method has: steam consumption is low, good and the good and operation factor advantages of higher of production continous-stable of result of extraction; But construction investment is higher, require stripping alkali concn higher (circulating mother liquor Na2Ok 〉=230%), scabbing in the autoclave to need pyrogenic process to clean, can only be by manual operation, and the shortcoming that can't clean automatically.
Second kind is the canalization stripping method
This method is to adopt the indirect heater assembly of pipeline that raw pulp is heated to about 280 ℃, and then enters autoclave stop stripping about 1.0 hours.Though this method has: energy consumption is lower, requires stripping alkali concn lower (circulating mother liquor Na2Ok is about 200g/l), result of extraction is good and produces advantages such as continous-stable is better; The difficult cleaning but the titanium that process in leaching produces scabs totally will not influence thermo-efficiency as cleaning.Construction investment is also higher.
Summary of the invention
The purpose of this utility model is, a kind of diaspore high pressure dissolving device is provided, and to simplify diaspore stripping flow process, saves construction investment, reduces production costs, thereby overcomes the deficiencies in the prior art.
The technical solution of the utility model: diaspore high pressure dissolving device of the present utility model, comprise the pipeline indirect heating apparatus, pipeline indirect heating apparatus front end is connected with high-pressure pump, and pipeline indirect heating apparatus rear end and stop pipe connection stop rear end of pipeline and be connected with next procedure.
In the aforesaid device, be provided with interior pipe in the described pipeline indirect heating apparatus, interior pipe is provided with outer tube outward.
In the aforesaid device, described outer tube is provided with the outlet of heating medium import and heating medium, and heating medium import and heating medium outlet communicate with cavity between interior pipe and the outer tube.
In the aforesaid device, be provided with turbulator in the described stop pipeline; Be provided with the washing unit that scabs in pipe and the stop pipeline in described.
Compared with prior art, the utility model is with the pipeline indirect heating apparatus and the stop pipeline replaces heating autoclave of the prior art and stripping stops autoclave, thereby has reached the purpose of simplifying flow process and saving construction investment.Stop in the pipeline and be provided with turbulent device, its stirring intensity is more much bigger than autoclave, has quickened dynamic response speed, and the stripping residence time can be shortened about 50%, thereby progressive has reached the purpose of simplifying flow process and saving construction investment.In order to improve heat transfer efficiency and to alleviate impurity such as SiO2 and TiO2 the scabbing of inside pipe wall, the flow rate of pulp of pipe is 2.0m/ second above (contains 2.0m/ second) in the indirect heating.Stop flow rate of pulp in the pipeline and be 1.0m/ second following (contain 1.0m/ second), to reduce the drag losses of pipeline; Reach the purpose of saving power ().Be provided with the washing unit that scabs in pipeline indirect heating apparatus and the stop pipeline,, alleviate the labour intensity of cleaning to improve heating efficiency.Be of value to industry and environment protection.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Being labeled as in the accompanying drawing: 1-pipeline indirect heating apparatus, the 2-high-pressure pump, 3-stops pipeline, pipe in the 4-, 5-outer tube, the import of 6-heating medium, the outlet of 7-heating medium, 8-cavity, 9-turbulator.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, but not as to any restriction of the present utility model.
Embodiment.The structural representation of the utility model device as shown in Figure 1, the new diaspore high pressure dissolving device of this practicality comprises pipeline indirect heating apparatus 1, pipeline indirect heating apparatus 1 front end is connected with high-pressure pump 2, pipeline indirect heating apparatus 1 rear end is connected with stop pipeline 3, stops pipeline 3 rear ends and is connected with next procedure.Pipe 4 in being provided with in the described pipeline indirect heating apparatus 1, the interior pipe 4 outer outer tubes 5 that are provided with.Described outer tube 5 is provided with heating medium import 6 and heating medium outlet 7, and heating medium import 6 and heating medium outlet 7 communicate with cavity 8 between interior pipe 4 and the outer tube 5.Be provided with turbulator 9 in the described stop pipeline 3; Be provided with the washing unit that scabs in pipe 4 and the stop pipeline 3 in described.
The diaspore high pressure dissolving-out method that the utility model adopted is raw pulp to be sent in the interior pipe 4 of pipeline indirect heating apparatus 1 by high-pressure pump 2, heated by the steam or the internal raw pulp of managing in 4 of fused salt that feed in the pipeline indirect heating apparatus outer tube 5, raw pulp enters the stop pipeline is delivered to the alumina producing system again after 20～40 minutes subsequent handling after being heated to the stripping temperature.The described stripping temperature that is heated to, its temperature is 260～280 ℃.The flow velocity of described raw pulp in the interior pipe of pipeline indirect heating apparatus is 2.0m/ more than second, contains 2.0m/ second; To alleviate impurity scabbing in the interior pipe of pipeline indirect heating apparatus such as SiO2 in the raw pulp and TiO2.Described raw pulp is 1.0m/ below second stopping ducted flow velocity, contains 1.0m/ second; To reduce the drag losses of pipeline; Reach the purpose of saving power.Be provided with turbulator in the described stop pipeline,, shorten dissolution time and duct length to quicken dissolution rate; Thereby the purpose that realizes simplifying flow process and save construction investment.Be equipped with the washing unit that scabs in the interior pipe of described pipeline indirect heating apparatus and the stop pipeline,, alleviate the labour intensity of cleaning to improve heating efficiency.
The utility model working process and principle are as follows:
As shown in Figure 1, the utility model is based on the deficiency of existing high pressure dissolving-out technology, has proposed the method for the whole canalizations of high pressure process in leaching, and the instant thermal recovery pipeline enclosure that adds that goes out ore pulp connects heating unit; Stop stripping and also adopt pipeline.Its principle is: in raw pulp flow in pipes dissolving device in the pipe to outer tube injecting steam/fused salt, internally the ore pulp of pipe (flow velocity 〉=2.0m/ second) carries out indirect heating, after the stripping temperature that is heated to requirement (～280 ℃), stop heat supply, and the flow velocity of interior pipe ore pulp reduced to the stripping of carrying out below the 1.0m/s 20～40 minutes that stops, the subsequent handling that enters the alumina producing system then.During concrete enforcement, with high-pressure pump 2 ore pulp is injected and to manage 4 in the indirect heating apparatus, ore pulp flows in interior pipe 4, simultaneously steam/fused salt is injected indirect device outer tube 5, by steam in the outer tube 5 or fused salt ore pulp is heated, ore pulp after the heating stops pipeline 3 from being pressed onto, and is delivered to the next procedure of alumina producing system by the ore pulp after 3 strippings of stop pipeline.
Claims (4)
1. diaspore high pressure dissolving device, it is characterized in that: comprise pipeline indirect heating apparatus (1), pipeline indirect heating apparatus (1) front end is connected with high-pressure pump (2), pipeline indirect heating apparatus (1) rear end is connected with stop pipeline (3), stops pipeline (3) rear end and is connected with next procedure.
2. diaspore high pressure dissolving device according to claim 1 is characterized in that: be provided with interior pipe (4) in the described pipeline indirect heating apparatus (1), the outer outer tube (5) that is provided with of interior pipe (4).
3. diaspore high pressure dissolving device according to claim 2, it is characterized in that: described outer tube (5) is provided with heating medium import (6) and heating medium outlet (7), and heating medium import (6) and heating medium export (7) and communicate with cavity (8) between interior pipe (4) and the outer tube (5).
4. diaspore high pressure dissolving device according to claim 2 is characterized in that: be provided with turbulator (9) in the described stop pipeline (3); Be provided with the washing unit that scabs in pipe (4) and the stop pipeline (3) in described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206721400U CN201942527U (en) | 2010-12-21 | 2010-12-21 | High-pressure digestion device for diaspore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206721400U CN201942527U (en) | 2010-12-21 | 2010-12-21 | High-pressure digestion device for diaspore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201942527U true CN201942527U (en) | 2011-08-24 |
Family
ID=44469875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206721400U Expired - Fee Related CN201942527U (en) | 2010-12-21 | 2010-12-21 | High-pressure digestion device for diaspore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201942527U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531004A (en) * | 2010-12-21 | 2012-07-04 | 贵阳铝镁设计研究院有限公司 | Method and device for dissolving out diaspore under high pressure |
-
2010
- 2010-12-21 CN CN2010206721400U patent/CN201942527U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531004A (en) * | 2010-12-21 | 2012-07-04 | 贵阳铝镁设计研究院有限公司 | Method and device for dissolving out diaspore under high pressure |
| CN102531004B (en) * | 2010-12-21 | 2014-09-10 | 贵阳铝镁设计研究院有限公司 | Method and device for dissolving out diaspore under high pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201942527U (en) | High-pressure digestion device for diaspore | |
| CN102531004B (en) | Method and device for dissolving out diaspore under high pressure | |
| CN201176530Y (en) | Washing machine with heating washing function | |
| CN202420230U (en) | Waste heat recovery system for textile technology | |
| CN204723981U (en) | A kind of elasticizer waste gas recovering device | |
| CN101665259A (en) | Ore pulp heat exchange method and system | |
| CN201208519Y (en) | External heating device of extraction trough | |
| CN207243702U (en) | Continous way sludge pyrohydrolysis tubular reactor | |
| CN205109172U (en) | A recovery filter equipment that waste water waste heat is pollution -free for mercerizing range | |
| CN106191474A (en) | A kind of Rare Earth Mine alkaline process decomposes pipe reaction device and technique | |
| CN204125169U (en) | Improve the device of steam utilization in Phosphoric Acid Concentration process | |
| CN209341217U (en) | A kind of Riser waste heat recovery device for coke oven | |
| CN203274259U (en) | Energy-saving device of reaction boiler | |
| CN207095024U (en) | A kind of heating system of conduction oil | |
| CN204837757U (en) | Livestock is slaughtered and uses over -and -under type heat transfer device and what constitute trades heat -cycle system thereof | |
| CN216815120U (en) | Efficient temperature raising device for red mud backwater | |
| CN202853167U (en) | Descaling device used in heating process of solar vacuum tube | |
| CN203319717U (en) | Device for recycling heat of re-dissolved stock solution | |
| CN114485214B (en) | Waste heat recovery device for white carbon black production | |
| CN201906601U (en) | One-step solid epoxy resin production system | |
| CN210140447U (en) | Industrial water heating device | |
| CN204973621U (en) | Dissolving tank is used in sulfamic acid production | |
| CN103628215B (en) | A kind of polyamic acid fiber cyclization method | |
| CN217119397U (en) | Complete set low-temperature lentinan extraction production line | |
| CN113277535B (en) | Novel subsider heating is used in aluminium oxide production device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20131221 |