CN101525145A - Application method of heat pipe for temperature reduction of multi-level alumina decomposing pool - Google Patents
Application method of heat pipe for temperature reduction of multi-level alumina decomposing pool Download PDFInfo
- Publication number
- CN101525145A CN101525145A CN200910030355A CN200910030355A CN101525145A CN 101525145 A CN101525145 A CN 101525145A CN 200910030355 A CN200910030355 A CN 200910030355A CN 200910030355 A CN200910030355 A CN 200910030355A CN 101525145 A CN101525145 A CN 101525145A
- Authority
- CN
- China
- Prior art keywords
- decomposing pool
- heat pipe
- alumina
- heat
- cooling
- 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.)
- Pending
Links
Images
Landscapes
- Catalysts (AREA)
Abstract
The invention relates to a temperature reduction device and temperature reduction method of an alumina decomposing pool. The temperature reduction device comprises the decomposing pool and a beater arranged in the decomposing pool. The temperature reduction device is characterized in that the top of the decomposing pool is provided with a heat pipe and a cooling device. The heat pipe extends to the decomposing pool from a top plate of the decomposing pool, a heated section L of the heat pipe is inserted in liquid of the decomposing pool to absorb heat, then the heat is transmitted to a cooling section M of the heat pipe to carry out heat exchange with cooling mediums such as recirculated cooling water, forced cooling air, and the like, and the purpose of reducing temperature of the liquid in the decomposing pool is achieved. The invention has the advantages of convenient and fast installation, reliable operation, no power waste of operation of the heat pipe, no material stoppage, long service life, convenient maintenance and replacement and no shutdown for repair because one heat pipe independently works.
Description
Technical field
The present invention relates to the method for cooling step by step of metallurgical alumina decomposing pool, relate to the application method of a kind of heat pipe in temperature reduction of multi-level alumina decomposing pool specifically.
Background technology
One of critical process of producing aluminum oxide is a decomposition of crystal seed, is about to aluminium hydroxide and separates out from oversaturated sodium aluminate solution, obtains the higher seed precipitation solution of the second best in quality aluminium hydroxide and caustic ratio.Under the certain situation of sodium aluminate solution composition, the key factor that influences separating effect is the degradation temperature in solution temperature and the decomposition course, temperature reduces, then the degree of supersaturation of sodium aluminate solution increases, help improving rate of decomposition, output capacity etc., so the intermediate temperature drop operation of decomposition course seems particularly important.
Traditional alumina producing enterprise alumina decomposing pool step by step in the temperature-fall period (in the process for making alumina process, multi-level alumina decomposing pool is arranged) all be to adopt stainless steel plate type heat exchanger, enter plate-type heat exchanger by pressure pumping material, through realizing 2 ℃ of coolings with the recirculated cooling water heat exchange.
Stainless steel making sheet formula interchanger is that the stainless steel fin is installed on stainless steel flat plate, and stainless steel plateform is installed then thereon, and an elementary cell is formed with the sealing of edge strip of paper used for sealing in both sides, is made of the core body of plate-type heat exchanger many elementary cells.Thermal medium and cold medium intersect respectively by adjacent elementary cell, because the temperature difference that exists between cold medium and the thermal medium, heat passes to low temperature side by the stainless steel plate fin from high temperature side, realize heat transfer between cold medium and the thermal medium with this, plate-type heat exchanger exists and to involve great expense, operation power consumption big (every cover 90 kilowatts/time), cost height, the pressure-losses is big, shortcomings such as easy obstruction.
Multi-level alumina decomposing pool all needs to lower the temperature 2 ℃ for every grade, and the alumina decomposing pool volume is huge, and single decomposing pool volume is all at 3000～5000M
3, decomposing pools at different levels per hour spillway discharge at 1400～1600M
3The heat that 3,000,000 kilocalories are per hour arranged approximately, need be by heat-exchange equipment cooling discharging, plate-type heat exchanger involves great expense, and every complete equipment price is all more than 2,000,000 yuan, and per hour service rating is 90 kilowatts, estimation 90% working time per year, year consuming electric power 700,000 kilowatts/time, large and medium-sized alumina producing enterprise, same category of device is all at tens of more than.And plate-type heat exchanger equipment is in operation very easily and stops up, and dismounting is safeguarded frequent, and causing can not the ordinary production operation.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide and using heat pipe is that the present invention is achieved through the following technical solutions for the method for temperature reduction of multi-level alumina decomposing pool:
The heat sink of alumina decomposing pool comprises: decomposing pool, be installed in the agitator in the decomposing pool, it is characterized in that installing heat pipe, refrigerating unit on decomposing pool.
The heat sink of aforementioned alumina decomposing pool is characterized in that described heat pipe stretches in the decomposing pool through the decomposing pool top board, and heat pipe heating section and cooling section are fixed by fixing part respectively.
The heat sink of aforementioned alumina decomposing pool, the fixing part that it is characterized in that described heating section are that an end is fixed on the stable cover that decomposes pool wall.
The heat sink of aforementioned alumina decomposing pool, the fixing part that it is characterized in that described cooling section is sleeve pipe and the flange that is arranged on the heat pipe, between flange and the water tank bottom plate gasket is installed.
The application method of heat pipe in temperature reduction of multi-level alumina decomposing pool is characterized in that absorbing heat in the fluid with heat pipe heating section insertion decomposing pool, through heat pipe self heat conducted to cooling section, and the cooling section of heat pipe and refrigerant heat exchange are embodied as fluid temperature reduction.
The application method of above-mentioned heat pipe in temperature reduction of multi-level alumina decomposing pool is characterized in that described refrigerant is water coolant or forces cooling air.
The invention has the beneficial effects as follows: the present invention is applied to special heat pipe on the temperature reduction of multi-level alumina decomposing pool, a difficult problem greatly, is easily stopped up in the power consumption that has solved plate-type heat exchanger existence in the alumina decomposing pool cooling, and the heat pipe cost is low, and it is convenient to install, reliable, heat pipe moves unpowered loss, and no material stops up, long service life, work alone because of heat pipe is single, the maintain and replace facility need not stop production to overhaul, has very high energy-saving benefit and using value.
Description of drawings
Fig. 1 is the heat sink structural representation of alumina decomposing pool of the present invention;
Fig. 2 is that heat pipe is at alumina decomposing pool top cover distribution schematic diagram;
Fig. 3 is the scheme of installation of heat pipe at the alumina decomposing pool top cover;
Fig. 4 is the heat pipe structure synoptic diagram;
Fig. 5 is heat pipe and alumina decomposing pool top cover bonded synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing, describe the specific embodiment of the present invention in detail:
With reference to shown in Figure 1, a kind of heat sink of alumina decomposing pool, decomposing pool 1 specification is as follows: diameter is 14000mm, topside area is 153.86M
2, decomposing pool top balanced welding system is installed two arc cooling water tanks 2, water tank size: wide 800mm, high 1600mm, outer arc length 13600mm, shrouding 3 is removably installed at arc water tank two ends, tank top cover plate 4 also adopts removably, is beneficial to installation and maintain and replace list and props up heat pipe.
Agitating vane 6 diameters are 9000mm in the decomposing pool, and the blade external diameter has 24000mm circumference spacing apart from the decomposing pool inwall, and heat pipe 7 divides 300mm along radius 6500mm along circular arc line, and spacing is uniform in two water tanks.
Fig. 2 is the distribution schematic diagram of heat pipe at the decomposing pool top cover, heat pipe 7 distributes along the circumferential direction of decomposing pool top cover, in symmetrically arranged two the arc water tanks in decomposing pool top 50 heat pipes is installed respectively among the figure, but should numeral only is example, be not to be used for restriction, the number of heat pipe can be set as required.
Fig. 3 is the scheme of installation of heat pipe at top cover; Fig. 4 is the heat pipe structure synoptic diagram; Fig. 5 is heat pipe and top cover bonded synoptic diagram.With reference to Fig. 3 to Fig. 5, the sleeve pipe 12 that be provided with upper cover 8, the lower cover 9 as sealing function, the ratio-frequency welding fin 10 that is used to increase area of dissipation, flange 11 on the heat pipe, is used to install and fix, the straight end of heat pipe is heating section L, bent-up end is cooling section M.Heat pipe heating section L length 13m absorbs heat in the fluid of insertion decomposing pool 1, conducts to heat pipe cooling section M and recirculated cooling water or forces cooling air to carry out heat exchange, carries out cooling.
The water tank bottom plate of heat pipe 7 through decomposing pool 1 top board and top stretches in the decomposing pool 1, heat pipe sleeve pipe 12 inserts in the circular hole of base plate reservation, fixing by flange 11, gasket 13 is installed between flange 11 and the water tank bottom plate, the lower end of heat pipe heating section is fixed by stable cover 14, and the stable the other end that puts welding support 5 stable covers is installed in pool wall 15.Heat pipe heating section length 13m absorbs heat in the insertion decomposing pool fluid, conducts to heat pipe cooling section and recirculated cooling water or forces cooling air to carry out heat exchange, carries out cooling.When heat pipe moves under air-cooled and air cooling mode, dismountable two end-plates 3 and water tank lamina tecti 4.
Heat pipe specification: Φ 51mm * 3mm * 16600mm, heating section L length: 13000mm, cooling section M total length 3600mm, wherein cooling section fin section N length 2200mm.Every the about 38KW/h of heat pipe through-put power * 860=32680 kilocalorie * 100=3268000 kilocalories.
Single heat pipe 2.08M of heating section area (is example with 100)
2* 100=208M
2
Cooling section area (is example with 100): single heat pipe 5.039M
2* 100=503.90M
2(containing the two-sided surface-area of fin)
The cooling section area is 2.42 times of heating section areas, favourable water-cooled and air-cooled combination are (because cooling area is big, speed of cooling is fast), adopt the water cycle cooling summer, spring, two seasons of autumn adopt gas blower air-cooled, winter, but Direct Air-Cooled or in conjunction with air-cooled was fully saved the required power consumption of cooling most possibly.Show that fully the hot pipe technique heat transfer power is big, the advantage that does not consume energy.
Operation scheme:
1, water-cooling pattern
Insert recirculated cooling water at top water tank inlet 100, pick out upflow tube,, realize that alumina decomposing pool meets the requirement of the cooling of production technique by the flow rate of Control Circulation water coolant from water outlet of water tank 200 tops.
2, air cooling way:
At spring, Qiu Liangji, under the relatively low situation of outdoor environment temperature, remove the shrouding at arc water tank two ends, under the effect of gas blower (can regulate air output), be medium with wind, quicken flowing of air, make cooling air pass the arc water tank, take away heat, can realize wind cooling temperature lowering.
3, air-cooled air cooling combination
In the winter time, when external temperature is low, remove tank top capping plate again, it is practicable Direct Air-Cooled, when temperature is higher in the daytime, do not reach the expection cooling-down effect, can start the gas blower that is arranged on arc water tank one end-plate mouth place and adopt and air-cooledly carry out cooling with the air cooling combination, when temperature is very low, close gas blower, carry out air cooling and can realize the decomposing pool cooling.As occur lowering the temperature when excessive, can partly install lagging material additional at the heat pipe cooling section and stop heat pipe heat radiation too fast, the excessive problem of lowering the temperature.
Below disclose the present invention with preferred embodiment, so it is not in order to restriction the present invention, and all employings are equal to replaces or technical scheme that the equivalent transformation mode is obtained, all drops within protection scope of the present invention.
Claims (6)
1, the heat sink of alumina decomposing pool comprises: decomposing pool, be installed in the agitator in the decomposing pool, it is characterized in that installing heat pipe, refrigerating unit on decomposing pool.
2, the heat sink of alumina decomposing pool according to claim 1 is characterized in that described heat pipe stretches in the decomposing pool through the decomposing pool top board, and heat pipe heating section and cooling section are fixed by fixing part respectively.
3, the heat sink of alumina decomposing pool according to claim 1, the fixing part that it is characterized in that described heating section are that an end is fixed on the stable cover that decomposes pool wall.
4, the heat sink of alumina decomposing pool according to claim 1, the fixing part that it is characterized in that described cooling section is sleeve pipe and the flange that is arranged on the heat pipe, between flange and the water tank bottom plate gasket is installed.
5, the application of heat pipe in temperature reduction of multi-level alumina decomposing pool is characterized in that the heat pipe heating section is inserted the refrigerant heat exchange, is embodied as fluid temperature reduction.
6, the application of heat pipe according to claim 5 in temperature reduction of multi-level alumina decomposing pool is characterized in that described refrigerant is water coolant or forces cooling air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910030355A CN101525145A (en) | 2009-03-19 | 2009-03-19 | Application method of heat pipe for temperature reduction of multi-level alumina decomposing pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910030355A CN101525145A (en) | 2009-03-19 | 2009-03-19 | Application method of heat pipe for temperature reduction of multi-level alumina decomposing pool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101525145A true CN101525145A (en) | 2009-09-09 |
Family
ID=41093246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910030355A Pending CN101525145A (en) | 2009-03-19 | 2009-03-19 | Application method of heat pipe for temperature reduction of multi-level alumina decomposing pool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101525145A (en) |
-
2009
- 2009-03-19 CN CN200910030355A patent/CN101525145A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202747857U (en) | Double-effect cooler | |
| CN102519032B (en) | Sewage drainage energy-saving flash tank | |
| CN201096463Y (en) | Sewage water and surface water cold and heat supply single flow path shell plate type heat exchanger | |
| CN102249273B (en) | Cooling heat pipe heat exchanger of alumina decomposer | |
| CN201680741U (en) | Air cooler of generator | |
| CN101628727B (en) | Cooling device of alumina decomposition pond | |
| CN201751388U (en) | Alumina decomposer cooling heat pipe exchanger | |
| CN101525145A (en) | Application method of heat pipe for temperature reduction of multi-level alumina decomposing pool | |
| CN204007242U (en) | A kind of plate type heat exchanger | |
| CN201534780U (en) | Temperature reducing device of aluminum oxide decomposition tank | |
| CN202066403U (en) | Plate sheet for plate-shell heat exchanger | |
| CN201476626U (en) | Tubular heat exchanger inside decomposer | |
| CN201803490U (en) | Split solar collector | |
| CN102020276B (en) | Method for utilizing waste heat in polycrystalline silicon production process | |
| CN202692766U (en) | Low-resistance heat exchange tube bundle device | |
| CN203367446U (en) | Water-cooling heat dissipation system of power battery of electromobile | |
| CN207391389U (en) | A kind of liquor production is with being quickly cooled down tank | |
| CN112284162A (en) | High-efficiency heat exchanger capable of enabling heat exchange medium to flow spirally | |
| CN202229627U (en) | Radiator with steel high-frequency welding spiral finned tubes | |
| CN201852316U (en) | Solar thermal collector | |
| CN201892440U (en) | Novel gas-liquid heat exchange device | |
| CN2846984Y (en) | Heat pump type crude oil heater | |
| CN204555771U (en) | Many housing moduleizations Multi-stage heat pipe exchanger | |
| CN216081054U (en) | Cross-flow type efficient cooling tower | |
| CN209655662U (en) | Cooling back installation is used in a kind of crystallization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090909 |