CN209456091U - A kind of cooling coupling alumina tube digestion heating device of seed precipitation tank - Google Patents
A kind of cooling coupling alumina tube digestion heating device of seed precipitation tank Download PDFInfo
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- CN209456091U CN209456091U CN201822174916.5U CN201822174916U CN209456091U CN 209456091 U CN209456091 U CN 209456091U CN 201822174916 U CN201822174916 U CN 201822174916U CN 209456091 U CN209456091 U CN 209456091U
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- precipitation tank
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- 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
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model relates to aluminium hydroxide production process heat recovery technical fields, especially a kind of cooling coupling alumina tube digestion heating device of seed precipitation tank, coupling processing is carried out with alumina tube digestion heating device by cooling in seed precipitation tank, so that the waste heat of seed precipitation tank is recycled in the products preparation process such as aluminium hydroxide micro powder, and pulp pre-heating process during aluminium oxide or aluminum hydroxide product is prepared for heating bauxite, the energy consumption that bauxite prepares the products such as aluminium hydroxide is reduced, is reduced costs.
Description
Technical field
The utility model relates to aluminium hydroxide production process heat recovery technical field, especially a kind of seed precipitation tank is cold
But alumina tube digestion heating device is coupled.
Background technique
Aluminium hydroxide raw material is purified, preparation purity is high, even-grained aluminium hydroxide micro powder, it is necessary first to by hydrogen
Alumina raw material is dissolved into the liquid alkaline of high temperature sodium hydroxide, and temperature needs 200 DEG C or so, and aluminium hydroxide is reacted with sodium hydroxide
The sodium aluminate solution of generation is transferred to seed precipitation tank, and suitable aluminium hydroxide seed is then added, in 70 DEG C or so of at a temperature of hydrogen
Alumina crystal forms aluminum hydroxide slime, is prepared into aluminium hydroxide micro powder finally by modes such as spray drying.In above-mentioned mistake
Cheng Zhong needs sodium aluminate solution being down to 70 DEG C or so from 200 DEG C or so, this partial heat is all wasted, and is caused very
Big thermal loss, results in waste of resources.
It and is during raw material produces aluminium hydroxide or aluminium oxide, to need to carry out bauxite ore pulp for bauxite
Tube digestion is handled after heating, and in the process, heating temperature usually requires to reach 390 DEG C or more, can be effective
Make dissolution efficiency more excellent.Currently, in dissolution heating process, through exchanging heat frequently with high steam or inorganic fused salt
The heat exchange wall thickness of heating, high steam not only heat exchanging equipment requires, but also it is lower the coefficient of heat transfer often occur, heat exchange
The defects of effect, poor efficiency；It is exchanged heat using inorganic fused salt, although not having excessive requirement to pressure, so that heat exchanging equipment
Heat exchange wall thickness it is of less demanding, but since viscosity and inorganic fused salt mobility influence, it is poor to will also result in heat transfer effect, therefore not
As frequently with mode.But either high steam or inorganic fused salt heat exchange processing, are required to additionally heat, cause
Energy consumption is higher.
In view of above-mentioned technological deficiency, this researcher is combined bauxite and prepares in the research process of aluminium hydroxide micropowder,
By coupling bauxite heating pipeization dissolution processing with the cooling processing of aluminium hydroxide seed precipitation tank, realize to aluminium hydroxide micro powder
Waste heat recycling is produced, energy consumption is reduced, provides new equipment for waste heat recycling comprehensive utilization.
Utility model content
In order to solve the above technical problems existing in the prior art, the invention provides a kind of cooling coupling of seed precipitation tank
Alumina tube digestion heating device.
It is achieved particular by following technical scheme:
The cooling coupling alumina tube digestion heating device of seed precipitation tank, including continuous booster pump, exist by piping connection
Cold pulp tank on continuous booster pump, the ore pulp general pipeline being connected on cold pulp tank are provided with several ore pulps on ore pulp general pipeline
It is in charge of；Seed precipitation tank；Slurry inlet and slurry outlet are provided on seed precipitation tank, winding is provided with inclination heat exchanger tube on seed precipitation tank inner wall
Road, the inner wall upper end that inclination heat exchanging pipe is located at seed precipitation tank is entrance, is in charge of with ore pulp and is connected to；It tilts heat exchanging pipe and is located at kind point
The inner wall lower end of slot is outlet, is in charge of with ore pulp discharge and is connected to；Ore pulp discharge is in charge of to be connected to hot pulp tank；Slurry inlet and material
Slurry is in charge of connection, and slurry is in charge of to be connected to slurry general pipeline, and slurry general pipeline is connected to slurry vessel；Slurry outlet is in charge of with discharge to be connected to,
Discharge is in charge of to be connected to discharge groove.Coupling processing is carried out with alumina tube digestion heating device by cooling in seed precipitation tank, is made
The waste heat for obtaining seed precipitation tank in the products preparation process such as aluminium hydroxide micro powder is recycled, and prepares aluminium oxide for heating bauxite
Or the pulp pre-heating process during aluminum hydroxide product, the energy consumption that bauxite prepares the products such as aluminium hydroxide is reduced, is dropped
Low cost.
It is preferred that the inclination heat exchanging pipe is arranged on heat exchanger plates, heat exchanger plates can be arranged around seed precipitation tank inner wall, and
It is welded to connect on seed precipitation tank inner wall.So that the slurry contact face in heat exchanger plates and seed precipitation tank increases, the heat exchange to slurry is improved
Efficiency improves cooling rate, improves slurry cooling effect and efficiency in seed precipitation tank.
It is preferred that the inclination heat exchanging pipe has several, it is inclined on heat exchanger plates, being located at heat exchanger plates upper end is inclination
The entrance of heat exchanging pipe is the outlet for tilting heat exchanging pipe positioned at heat exchange version lower end.So that ore pulp is in heat exchanging pipe, Neng Gou
It under gravity, constantly slides downwards, reduces the blocking to pipeline, improve heat transfer effect.
It is preferred that the inlet is provided with entrance bottom plate and Inlet cover plate, wherein entrance bottom plate and Inlet cover plate be
When heat exchanger plates carry out being close to be welded to connect lopping around seed precipitation tank inner wall, it can just cover and be combined.It is preferred that the outlet
Place is provided with Outlet cover plate and outlet bottom plate, and wherein Outlet cover plate and outlet bottom plate are to carry out in heat exchanger plates around seed precipitation tank inner wall
When being close to be welded to connect lopping, it can just cover and be combined.Heat transfer effect is improved, heat exchange efficiency is enhanced.
It is preferred that the described ore pulp discharge is in charge of after elder generation is connected to ore pulp discharge header, then by ore pulp discharge header and Re Kuang
Stock tank connection.It avoids being in charge of root the connection with hot pulp tank, improves safety.
It is preferred that the ore pulp discharge is in charge of, gap booster pump is provided on the pipeline being connected to hot pulp tank.It helps
The discharge of material in exchange heat pipe, the ore pulp for improving exchange inside heat pipe empty, and avoid blocking heat exchanger tube.
Compared with prior art, the technical effect of the invention is embodied in:
The invention structure is simple, easy to operate, and the waste heat that can efficiently use the slurry in seed precipitation tank preheats cold mine
Slurry reduces energy consumption, and ore pulp self gravity is made full use of to overcome pulp viscosity, density are larger to cause to be easy to block heat exchange pipeline
Defect, avoid pressurization result in the need for thicker tube wall, cause higher cost, the poor defect of the coefficient of heat transfer.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram.
Fig. 2 is heat exchanger plates deployed configuration schematic diagram.
The cold pulp tank 3- ore pulp general pipeline 4- slurry of the continuous booster pump 2- of 1- is in charge of 5- slurry general pipeline 6- slurry vessel 7-
The discharge of seed precipitation tank 8- ore pulp is in charge of the gap 9- booster pump 10- discharge groove 11- discharge and is in charge of the hot pulp tank 13- ore pulp of 12-
It is in charge of the outlet 14- heat exchanger plates 14-1- entrance bottom plate 14-2- Inlet cover plate 14-3- Outlet cover plate 14-4- bottom plate 14-5-
Tilt heat exchanging pipe.
Specific embodiment
It is limited below with reference to specific embodiment the technical solution of the invention is further, but requires to protect
The range of shield is not only limited to made description.
As shown in Figure 1, 2, in certain embodiments, the cooling coupling alumina tube digestion heating device of seed precipitation tank, packet
Continuous booster pump 1 is included, by cold pulp tank 2 of the piping connection on continuous booster pump 1, the ore pulp being connected on cold pulp tank 2
General pipeline 3 is provided with several ore pulps on ore pulp general pipeline 3 and is in charge of 13；Seed precipitation tank 7；Slurry inlet and slurry are provided on seed precipitation tank 7
It exports, winding is provided with inclination heat exchanging pipe 14-5 on 7 inner wall of seed precipitation tank, and inclination heat exchanging pipe 14-5 is located at the interior of seed precipitation tank 7
Wall upper end is entrance, is in charge of 13 with ore pulp and is connected to；The inner wall lower end that inclination heat exchanging pipe 14-5 is located at seed precipitation tank 7 is outlet, with
8 connections are in charge of in ore pulp discharge；Ore pulp discharge is in charge of 8 and is connected to hot pulp tank 12；Slurry inlet is in charge of 4 with slurry and is connected to, slurry
It is in charge of 4 to be connected to slurry general pipeline 5, slurry general pipeline 5 is connected to slurry vessel 6；Slurry outlet is in charge of 11 with discharge and is connected to, and discharge is in charge of 11
It is connected to discharge groove 10.
The device in the process of running, under the action of continuous booster pump, by the cold pulp conveying in cold pulp tank to mine
It starches in general pipeline, and is in charge of in the inclination heat exchanging pipe for entering seed precipitation tank by ore pulp, the slurry in slurry vessel is put into kind point
Crystallisation by cooling is carried out in slot, so that through supercooling ore pulp in heat exchanging pipe, the slurry in slurry vessel exists during crystallisation by cooling
Heat exchange is realized in seed precipitation tank, so that entering in hot pulp tank after cold ore pulp obtains preheating, is realized to slurry in seed precipitation tank
Cooling down, realize waste heat recycling preheating, reduce energy consumption.
In certain embodiments, the inclination heat exchanging pipe 14-5 is arranged on heat exchanger plates 14, and heat exchanger plates 14 can enclose
It is arranged around 7 inner wall of seed precipitation tank, and is welded to connect on seed precipitation tank inner wall.
As shown in Fig. 2, in certain embodiments, the inclination heat exchanging pipe 14-5 has several, is inclined at heat exchange
It is the entrance for tilting heat exchanging pipe 14-5 positioned at 14 upper end of heat exchanger plates on plate 14, being located at heat exchange 14 lower end of version is inclination heat exchanger tube
The outlet of road 14-5.In certain embodiments, the inlet is provided with entrance bottom plate 14-1 and Inlet cover plate 14-2, wherein
Entrance bottom plate 14-1 and Inlet cover plate 14-2 be heat exchanger plates 14 around 7 inner wall of seed precipitation tank carry out be close to be welded to connect lopping when,
It can just cover and be combined.
In certain embodiments, the exit is provided with Outlet cover plate 14-3 and outlet bottom plate 14-4, middle outlet
Cover board 14-3 and outlet bottom plate 14-4 be heat exchanger plates 14 around 7 inner wall of seed precipitation tank carry out be close to be welded to connect lopping when, can
Just lid is combined.
In certain embodiments, the described ore pulp discharge be in charge of 8 be first connected to ore pulp discharge header after, then ore pulp is discharged
General pipeline is connected to hot pulp tank 12.
In certain embodiments, ore pulp discharge is in charge of 8, between being provided on the pipeline being connected to hot pulp tank 12
Gap booster pump 9.
Claims (7)
1. a kind of cooling coupling alumina tube digestion heating device of seed precipitation tank, which is characterized in that including continuous booster pump
(1), the cold pulp tank (2) by piping connection on continuous booster pump (1), the ore pulp general pipeline being connected on cold pulp tank (2)
(3), several ore pulps are provided on ore pulp general pipeline (3) and are in charge of (13)；Seed precipitation tank (7)；Seed precipitation tank is provided with slurry inlet on (7)
And slurry outlet, winding is provided with inclination heat exchanging pipe (14-5) on seed precipitation tank (7) inner wall, and inclination heat exchanging pipe (14-5) is located at
The inner wall upper end of seed precipitation tank (7) is entrance, and (13) are in charge of with ore pulp and are connected to；Inclination heat exchanging pipe (14-5) is located at seed precipitation tank (7)
Inner wall lower end be outlet, be in charge of (8) with ore pulp discharge and be connected to；Ore pulp discharge is in charge of (8) and is connected to hot pulp tank (12)；Slurry
Entrance is in charge of (4) with slurry and is connected to, and slurry is in charge of (4) and is connected to slurry general pipeline (5), and slurry general pipeline (5) is connected to slurry vessel (6)；
Slurry outlet is in charge of (11) with discharge and is connected to, and discharge is in charge of (11) and is connected to discharge groove (10).
2. the cooling coupling alumina tube digestion heating device of seed precipitation tank as described in claim 1, which is characterized in that described
Inclination heat exchanging pipe (14-5) be arranged on heat exchanger plates (14), heat exchanger plates (14) can around seed precipitation tank (7) inner wall be arranged, and
It is welded to connect on seed precipitation tank inner wall.
3. the cooling coupling alumina tube digestion heating device of seed precipitation tank as claimed in claim 2, which is characterized in that described
Inclination heat exchanging pipe (14-5) have several, be inclined on heat exchanger plates (14), being located at heat exchanger plates (14) upper end is that inclination is changed
The entrance of pipe line (14-5), being located at heat exchanger plates (14) lower end is the outlet for tilting heat exchanging pipe (14-5).
4. the cooling coupling alumina tube digestion heating device of seed precipitation tank as claimed in claim 3, which is characterized in that described
Inlet be provided with entrance bottom plate (14-1) and Inlet cover plate (14-2), wherein entrance bottom plate (14-1) and Inlet cover plate (14-
It 2) can be just covered and be combined when heat exchanger plates (14) carry out being close to be welded to connect lopping around seed precipitation tank (7) inner wall.
5. the cooling coupling alumina tube digestion heating device of seed precipitation tank as claimed in claim 3, which is characterized in that described
Exit be provided with Outlet cover plate (14-3) and outlet bottom plate (14-4), wherein Outlet cover plate (14-3) and export bottom plate (14-
It 4) can be just covered and be combined when heat exchanger plates (14) carry out being close to be welded to connect lopping around seed precipitation tank (7) inner wall.
6. the cooling coupling alumina tube digestion heating device of seed precipitation tank as described in claim 1, which is characterized in that described
Ore pulp discharge be in charge of after (8) be first connected to ore pulp discharge header, then ore pulp discharge header is connected to hot pulp tank (12).
7. the cooling coupling alumina tube digestion heating device of seed precipitation tank as described in claim 1 or 6, which is characterized in that
(8) are in charge of in the ore pulp discharge, and gap booster pump (9) are provided on the pipeline being connected to hot pulp tank (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174916.5U CN209456091U (en) | 2018-12-24 | 2018-12-24 | A kind of cooling coupling alumina tube digestion heating device of seed precipitation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174916.5U CN209456091U (en) | 2018-12-24 | 2018-12-24 | A kind of cooling coupling alumina tube digestion heating device of seed precipitation tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209456091U true CN209456091U (en) | 2019-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822174916.5U Active CN209456091U (en) | 2018-12-24 | 2018-12-24 | A kind of cooling coupling alumina tube digestion heating device of seed precipitation tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209456091U (en) |
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2018
- 2018-12-24 CN CN201822174916.5U patent/CN209456091U/en active Active
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