CN205973832U - Dissolve out system that utilizes of exhaust steam among oxidation aluminium production - Google Patents
Dissolve out system that utilizes of exhaust steam among oxidation aluminium production Download PDFInfo
- Publication number
- CN205973832U CN205973832U CN201620852147.8U CN201620852147U CN205973832U CN 205973832 U CN205973832 U CN 205973832U CN 201620852147 U CN201620852147 U CN 201620852147U CN 205973832 U CN205973832 U CN 205973832U
- Authority
- CN
- China
- Prior art keywords
- exhaust steam
- water cooler
- dilution trap
- water
- standby
- 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.)
- Withdrawn - After Issue
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract 3
- 229910052782 aluminium Inorganic materials 0.000 title abstract 3
- 239000004411 aluminium Substances 0.000 title abstract 3
- 230000003647 oxidation Effects 0.000 title abstract 3
- 238000007254 oxidation reaction Methods 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000010790 dilution Methods 0.000 claims abstract description 46
- 239000012895 dilution Substances 0.000 claims abstract description 46
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000001704 evaporation Methods 0.000 claims abstract description 7
- 230000008020 evaporation Effects 0.000 claims abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 40
- 239000010413 mother solution Substances 0.000 claims description 19
- 239000000706 filtrate Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 12
- 239000011707 mineral Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 7
- 238000007701 flash-distillation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 239000012452 mother liquor Substances 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract 2
- 238000004090 dissolution Methods 0.000 description 9
- 239000003513 alkali Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 238000007885 magnetic separation Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model provides a dissolve out system that utilizes of exhaust steam among oxidation aluminium production, including filtering tank, water cooler, three wash that water conservancy mixing tank, dilatation groove, flash system, reserve dilution trap, dilution trap, evaporation the 5th are imitated, the mother liquor adjustment tank, filtering tank pass through liquid supply tube and water cooler intercommunication, carry filtrating water to the water cooler, the exhaust steam source through sending steam pipe and water cooler intercommunication, carry the exhaust steam to the water cooler, the water cooler pass through conveyer pipe and dilatation groove intercommunication, to dilatation groove input water and exhaust steam, the dilatation groove through the conveyer pipe and three wash water conservancy mixing tank intercommunication, carry the filtrating water after the heating. The utility model discloses recycle is carried out in the exhaust steam of dissolving out to among the oxidation aluminium production, reduces the consumption of steam, reduction in production cost, and process flow is simple, small investment, return rate are high, has fine economic benefits and social.
Description
Technical field
This utility model belongs to nonferrous metallurgy field and in particular to a kind of utilization system of dissolved exhaust steam in alumina production
System.
Background technology
In alumina producing, dissolution operation is to mix bauxite with Calx, circulation alkali liquor to be milled into after qualified ore pulp
Carry out dissolution, generation sodium aluminate solution will be reacted with circulation alkali liquor by the aluminium oxide in Ore.This one procedure needs in high temperature
（≥250℃）, high pressure（≥4.0Mpa）Under the conditions of carry out.After Ore dissolution reaction completes, need the dissolution of High Temperature High Pressure
Ore pulp is 110～130 DEG C through ten grades of flash distillation decrease temperature and pressure, the temperature to final stage flash distillation dissolved mineral slurry, and pressure 0.1 Mpa is left
The right side, then by the primary wash liquor of dissolved mineral slurry and red-mud settlement（95℃）Mixing, dilution in dilution trap.Dissolved mineral slurry is dilute
Release the part exhaust steam that can produce in groove dilution, exhaust steam is introduced standby dilution trap and settles after three washing liquid heat exchange, remaining
Exhaust steam gather capacity expansion tank, be passed through in capacity expansion tank waste water absorb partial heat.
Dissolution operation is the steam consumption rich and influential family of aluminium oxide, in order to reduce steam consumption, how more efficient utilization dissolution
Exhaust steam, the technological difficulties of always each alumina producer.The project of such as certain red mud for alumina plant high magnetic separation ferrum, ferrum red mud material of sending to be elected
Slurry is washed underflow discharging by original sedimentation two and is changed to three and washes underflow discharging.Do not come into operation before high magnetic separation ferrum, two wash underflow slip sends to be elected
Return three after ferrum Some thermal heat loss and wash underflow, two wash subsider and three washes subsider temperature difference greatly, and three washing liquids send dissolution exhaust steam
After heat exchange can recovery section heat, after high magnetic separation ferrum is gone into operation, two wash underflow slip directly send three to wash subsider, and heat loss is little,
The temperature difference of two grooves diminishes, and three wash subsider temperature raises, three washing liquids send exhaust steam to reclaim the heat that can reclaim is few, outer row is weary
Vapour increases.When arranging outside exhaust steam, the on the one hand exhaust steam with alkali enters and can cause environmental pollution in air, on the other hand can cause exhaust steam
Waste heat fails to reclaim direct losses, so that alumina production cost is increased.
In aluminum oxide production process, need to wash subsider by rotary drum filter by three when arranging outside sedimentation operation red mud
Red mud slip carries out solid-liquor separation, arranges outside solid, and filtrate returns three and washes subsider.The rotary drum filter filtrate of low temperature and other
Operation backwater is directly added in subsider, is easily reduced subsider temperature and leads to alumina hydrolysis to lose, most of aluminium oxide
Factory needs to be passed through low-pressure steam in subsider, in order to ensure subsider temperature.
The steam consumption measure reducing dissolution operation at present has：
（1）Ensure alumina heat transfer effect simultaneously, improve the feeding temperature of alumina.Alumina to be improved enters
Material temperature degree, mainly improves evaporization process circulating mother liquor temperature.
（2）Replace low-pressure steam using exhaust steam, be passed through subsider, this is also a feasible method reducing the steam consumption.
Although it is relatively easy to recycle low pressure exhaust steam, how efficient utilization is relatively difficult.If can be by row to big
The exhaust steam of gas is effectively recycled.Significant economic benefit and social benefit will be produced.
Utility model content
This utility model aims to provide a kind of utilization system of dissolved exhaust steam in alumina production, for current aluminium oxide
Not enough present in exhaust steam recycling process in production, imitate discharging mother solution and filtrate using dissolution exhaust steam heating evaporation station the 5th
Water.
For achieving the above object, the technical solution of the utility model is as follows：
A kind of utilization system of dissolved exhaust steam in alumina production, including filtrate receiver, water cooler, three wash water power mixing channels,
Capacity expansion tank, described filtrate receiver is connected with water cooler by liquid pushing tube, conveys filtrate water to water cooler；Described exhaust steam source is passed through
Steam delivery tube is connected with water cooler, conveys exhaust steam to water cooler；Described water cooler is connected with capacity expansion tank by delivery pipe, to dilatation
Groove input water and exhaust steam；Described capacity expansion tank is connected with three wash water power mixing channels by delivery pipe, the filtrate water after conveying heating.
Described exhaust steam source is the exhaust steam that in flash system, dissolved mineral slurry discharges.
The utilization system of described dissolved exhaust steam in alumina production also include flash system, standby dilution trap, dilution trap,
Evaporate the 5th effect；Described flash system is connected with dilution trap by delivery pipe, conveys dissolved mineral slurry to dilution trap；Described is dilute
Release groove to connect with standby dilution trap by jet chimney, the exhaust steam that conveying dissolved mineral slurry produces in standby dilution trap；Described
Standby dilution trap is connected with water cooler by steam delivery tube, conveys the remaining exhaust steam of standby dilution trap to water cooler；Described evaporation
5th effect is connected with standby dilution trap by delivery pipe, conveys mother solution in standby dilution trap.
It is provided with pipe bundle heat exchanger, described exhaust steam enters standby dilution trap and pipe bundle heat exchanger in described standby dilution trap
Outer wall contacts, and described mother solution enters in pipe bundle heat exchanger.
The utilization system of described dissolved exhaust steam in alumina production also includes mother solution surge-tank, described standby dilution trap
Connected with mother solution surge-tank by delivery pipe, be conveyed through the mother solution after exhaust steam heating in mother solution surge-tank.
The top of described capacity expansion tank is provided with emptier connection air.
The beneficial effects of the utility model are：
1st, this utility model utilizes exhaust steam heating evaporation station discharging mother solution, low temperature filtrate and the backwater of dissolved mineral slurry, improves
The feeding temperature of alumina, and ensure the temperature of subsider.Heated by secondary utilization exhaust steam, efficiently utilize aluminium oxide
The exhaust steam producing in production process, improves exhaust steam recovery utilization rate, reduces the alumina producing steam consumption, directly reduces and produce into
This.
2nd, the exhaust steam recycling in this utility model carries alkali, by recycling exhaust steam, not only reduces band alkali weary
The outer row of vapour, the alkali recycling of also recyclable part, so both can reduce production cost, also reduce the pollution to air,
There is positive role to conservation of natural environment.
Brief description
Fig. 1 is utilization system schematic of the present utility model.
Specific embodiment
With reference to specific embodiment, this utility model is described in detail.
Embodiment 1
A kind of utilization system of dissolved exhaust steam in alumina production, as shown in figure 1, include filtrate receiver, water cooler, three wash waters
Power mixing channel, capacity expansion tank；Described filtrate receiver is connected with water cooler by liquid pushing tube, conveys filtrate water to water cooler；Described
Exhaust steam source is connected with water cooler by steam delivery tube, conveys exhaust steam to water cooler；Described water cooler passes through delivery pipe and capacity expansion tank
Connection, inputs water and exhaust steam to capacity expansion tank；Described capacity expansion tank is connected with three wash water power mixing channels by delivery pipe, conveying heating
Filtrate water afterwards.
Described exhaust steam source is the exhaust steam that in flash system, dissolved mineral slurry discharges.
The utilization system of described dissolved exhaust steam in alumina production also include flash system, standby dilution trap, dilution trap,
Evaporate the 5th effect；Described flash system is connected with dilution trap by delivery pipe, conveys dissolved mineral slurry to dilution trap；Described is dilute
Release groove to connect with standby dilution trap by jet chimney, the exhaust steam that conveying dissolved mineral slurry produces in standby dilution trap；Described
Standby dilution trap is connected with water cooler by steam delivery tube, conveys the remaining exhaust steam of standby dilution trap to water cooler；Described evaporation
5th effect is connected with standby dilution trap by delivery pipe, conveys mother solution in standby dilution trap.
It is provided with pipe bundle heat exchanger, described exhaust steam enters standby dilution trap and pipe bundle heat exchanger in described standby dilution trap
Outer wall contacts, and described mother solution enters in pipe bundle heat exchanger.
The utilization system of described dissolved exhaust steam in alumina production also includes mother solution surge-tank, described standby dilution trap
Connected with mother solution surge-tank by delivery pipe, be conveyed through the mother solution after exhaust steam heating in mother solution surge-tank.
The top of described capacity expansion tank is provided with emptier connection air.
Although, above use general explanation and specific embodiment, detailed description made to this utility model,
But on the basis of this utility model, it can be made some modifications or improvements, this is aobvious and easy to those skilled in the art
See.Therefore, these modifications or improvements on the basis of without departing from this utility model spirit, belong to this utility model
Claimed scope.
Claims (6)
1. the utilization system of a kind of dissolved exhaust steam in alumina production, including filtrate receiver, water cooler, three wash water power mixing channels, expansion
Tank it is characterised in that：
Described filtrate receiver is connected with water cooler by liquid pushing tube, conveys filtrate water to water cooler；Described exhaust steam source is passed through to send
Steam pipe is connected with water cooler, conveys exhaust steam to water cooler；Described water cooler is connected with capacity expansion tank by delivery pipe, to capacity expansion tank
Input water and exhaust steam；Described capacity expansion tank is connected with three wash water power mixing channels by delivery pipe, the filtrate water after conveying heating.
2. dissolved exhaust steam in alumina production according to claim 1 utilization system it is characterised in that：Described exhaust steam
Source is the exhaust steam that in flash system, dissolved mineral slurry discharges.
3. dissolved exhaust steam in alumina production according to claim 2 utilization system it is characterised in that：Also include flash distillation
System, standby dilution trap, dilution trap, evaporation the 5th effect；Described flash system is connected with dilution trap by delivery pipe, to dilution
Groove conveys dissolved mineral slurry；Described dilution trap is connected with standby dilution trap by jet chimney, conveys molten in standby dilution trap
Go out the exhaust steam of ore pulp generation；Described standby dilution trap is connected with water cooler by steam delivery tube, conveys standby dilution to water cooler
The remaining exhaust steam of groove；Described evaporation the 5th effect is connected with standby dilution trap by delivery pipe, conveys female in standby dilution trap
Liquid.
4. dissolved exhaust steam in alumina production according to claim 3 utilization system it is characterised in that：Described is standby
It is provided with pipe bundle heat exchanger, described exhaust steam is entered standby dilution trap and contacted with pipe bundle heat exchanger outer wall, described in dilution trap
Mother solution enters in pipe bundle heat exchanger.
5. the dissolved exhaust steam in alumina production according to claim 3 or 4 any one utilization system it is characterised in that：
Also include mother solution surge-tank, described standby dilution trap is connected with mother solution surge-tank by delivery pipe, defeated in mother solution surge-tank
The mother solution after exhaust steam heating is crossed in the warp let-off.
6. dissolved exhaust steam in alumina production as claimed in claim 1 utilization system it is characterised in that：Described capacity expansion tank
Top be provided with emptier connection air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620852147.8U CN205973832U (en) | 2016-08-09 | 2016-08-09 | Dissolve out system that utilizes of exhaust steam among oxidation aluminium production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620852147.8U CN205973832U (en) | 2016-08-09 | 2016-08-09 | Dissolve out system that utilizes of exhaust steam among oxidation aluminium production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205973832U true CN205973832U (en) | 2017-02-22 |
Family
ID=58030123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620852147.8U Withdrawn - After Issue CN205973832U (en) | 2016-08-09 | 2016-08-09 | Dissolve out system that utilizes of exhaust steam among oxidation aluminium production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205973832U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106115749A (en) * | 2016-08-09 | 2016-11-16 | 中国铝业股份有限公司 | A kind of dissolved exhaust steam in alumina production utilize system and method |
| CN111661859A (en) * | 2020-07-10 | 2020-09-15 | 中铝山东工程技术有限公司 | Evaporation and dissolution integrated process equipment and process flow thereof |
-
2016
- 2016-08-09 CN CN201620852147.8U patent/CN205973832U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106115749A (en) * | 2016-08-09 | 2016-11-16 | 中国铝业股份有限公司 | A kind of dissolved exhaust steam in alumina production utilize system and method |
| CN106115749B (en) * | 2016-08-09 | 2018-04-20 | 中国铝业股份有限公司 | A kind of dissolved exhaust steam in alumina production utilizes system and method |
| CN111661859A (en) * | 2020-07-10 | 2020-09-15 | 中铝山东工程技术有限公司 | Evaporation and dissolution integrated process equipment and process flow thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170222 Effective date of abandoning: 20180420 |
|
| AV01 | Patent right actively abandoned |