CN203021307U - Alumina dissolution equipment - Google Patents
Alumina dissolution equipment Download PDFInfo
- Publication number
- CN203021307U CN203021307U CN 201220742350 CN201220742350U CN203021307U CN 203021307 U CN203021307 U CN 203021307U CN 201220742350 CN201220742350 CN 201220742350 CN 201220742350 U CN201220742350 U CN 201220742350U CN 203021307 U CN203021307 U CN 203021307U
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- China
- Prior art keywords
- preheater
- steam
- ore pulp
- pot
- acid
- 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 - Lifetime
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000004090 dissolution Methods 0.000 title abstract 5
- 239000002253 acid Substances 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 27
- 238000010790 dilution Methods 0.000 claims description 26
- 239000012895 dilution Substances 0.000 claims description 26
- 238000002386 leaching Methods 0.000 claims description 22
- 210000003298 dental enamel Anatomy 0.000 claims description 15
- 239000010881 fly ash Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 6
- 238000004062 sedimentation Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 238000005086 pumping Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000010883 coal ash Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 description 9
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000032258 transport Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000007701 flash-distillation Methods 0.000 description 2
- 238000004131 Bayer process Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000010117 shenhua Substances 0.000 description 1
- QPILZZVXGUNELN-UHFFFAOYSA-N sodium;4-amino-5-hydroxynaphthalene-2,7-disulfonic acid Chemical compound [Na+].OS(=O)(=O)C1=CC(O)=C2C(N)=CC(S(O)(=O)=O)=CC2=C1 QPILZZVXGUNELN-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model belongs to the field of chemical industry and relates to alumina dissolution equipment. The alumina dissolution equipment comprises a high-pressure acid-proof pump, a preheater, a reaction kettle and an ore pulp self-evaporator, wherein the high-pressure acid-proof pump is used for pumping the coal ash slurry to the preheater; the preheater, the reaction kettle and the ore pulp self-evaporator are sequentially connected through an acid-proof pipeline; a steam inlet of the preheater and a steam outlet of the ore pulp self-evaporator are connected through a steam pipeline; and the middle lower part of the reaction kettle is communicated with an external steam pipe. The alumina dissolution equipment is high in acid resistance, is suitable for dissolving alumina from coal ash in a large scale and is high in dissolution rate and durable in use.
Description
Technical field
The utility model belongs to chemical field, relates to a kind of alumina leaching equipment.
Background technology
Al in aluminous fly-ash
2O
3Content can reach 50% left and right usually, is equivalent to Al in the medium grade alumyte of China
2O
3Content, be very valuable regeneration aluminum-containing mineral resource.Utilize aluminous fly-ash to produce aluminum oxide, can alleviate the predicament of China's bauxite resource shortage, be of great immediate significance and long-range strategic importance.
At present, the production of aluminum oxide is all to adopt bayer's process production, stripping equipment comparative maturity.But the shortcomings such as energy consumption is high, complex process, production cost height that alumina producing Bayer process exists.
Take the lead in the at home technical study of development cycle fluidization bed fly ash acid leaching extraction aluminum oxide of Shenhua Group has successfully been set up " one step of associating removal of impurities acid pasting " the preparation metallurgical-grade aluminum oxide technique with independent intellectual property right.The mixed slurry that forms due to flyash and hydrochloric acid has corrodibility, and existing device for dissolving out aluminium oxide is inapplicable.Therefore, for flyash and hydrochloric acid slip characteristic, carrying out the dissolving-out process equipment research that can be applicable to Alumina refinery after amplification is imperative for the comprehensive utilization of coal associated resources.
Summary of the invention
The purpose of this utility model is to provide a kind of suitable flyash acid system to extract the stripping equipment of aluminum oxide, extracts the industrialization process of aluminum oxide to advance acid system.
Alumina leaching equipment of the present utility model comprises high pressure acid proof pump, preheater, reactor and ore pulp flash-pot, wherein, the high pressure acid proof pump is used for the flyash material pulp pumping to preheater, and preheater, reactor and ore pulp flash-pot are connected acid-resistant pipeline and connect successively according to the dissolving-out process flow process; The preheater steam-in connects by steam-pipe with ore pulp flash-pot vapour outlet, and the reactor middle and lower part is communicated with the exogenous steam pipe.
Preferably, the number of described preheater and ore pulp flash-pot is respectively two, be respectively one-level preheater, secondary preheater, one-level ore pulp flash-pot, secondary ore pulp flash-pot, wherein one-level preheater steam-in is connected by steam-pipe with one-level ore pulp flash-pot vapour outlet, and secondary preheater steam-in is connected by steam-pipe with secondary ore pulp flash-pot vapour outlet.
Preferably, described preheater is enamel cannula primary heater or graphite tubulation preheater.
Preferably, the number of described reactor is three at least, connects by acid-resistant pipeline successively between reactor.
Preferably, described reactor is enamel reaction still or steel lining tetrafluoroethylene reactor.
Preferably, described enamel reaction still is that band stirs, the enamel reaction still of chuck, and at this moment, the exogenous steam pipe also is connected with chuck.
Preferably, described acid-resistant pipeline is enamel acid-resistant pipeline or steel lining tetrafluoroethylene acid-resistant pipeline.
Preferably, be provided with valve on described acid-resistant pipeline, steam-pipe and exogenous steam pipe.
Preferably, described stripping equipment also comprises dilution trap and dilution pumps, and described dilution trap is positioned at the downstream of ore pulp flash-pot in the dissolving-out process flow process, is used for receiving the slip after evaporating; Described dilution pumps is positioned at the downstream of dilution trap in the dissolving-out process flow process, be used for slurry pipeline transport with dilution trap to the sedimentation workshop.
Alumina leaching equipment acid-proof wear-proof of the present utility model is strong, is suitable for stripping aluminum oxide from flyash on a large scale, and solubility rate is high, durable.
Description of drawings
Fig. 1 is the schematic diagram of a kind of embodiment of alumina leaching equipment of the present utility model;
Fig. 2 is the schematic diagram of the second embodiment of alumina leaching equipment of the present utility model.
Embodiment
Now describe the utility model in detail in conjunction with Fig. 1, Fig. 2 and following embodiment, but content of the present utility model is not limited to the drawings and specific embodiments.
Fig. 1 is the schematic diagram of a kind of embodiment of alumina leaching equipment of the present utility model, this stripping equipment 1 comprises high pressure acid proof pump 10, preheater 11, first order reaction still 12, second order reaction still 13, final stage reactor 14 and ore pulp flash-pot 15, wherein, high pressure acid proof pump 10 is used for the fly-ash mine stock pump is delivered to preheater 11, and preheater 11, first order reaction still 12, second order reaction still 13, final stage reactor 14 are connected with the ore pulp flash-pot and are connected successively according to the dissolving-out process flow process by acid-resistant pipeline 16; The vapour outlet of being connected with the ore pulp flash-pot in the steam-in of preheater 11 connects by steam-pipe 17, and reactor 12,13,14 middle and lower part are communicated with exogenous steam pipe 18 respectively.
In the present embodiment, preheater 11 is porcelain bushing preheaters; Preheating temperature is 45～80 ℃; Design pressure is: tube side 0.25Mpa, shell side 0.25Mpa; Design temperature is: 0～200 ℃ of tube side, 0～200 ℃ of shell side.
In other embodiments, preheater 11 can be also graphite tubulation preheater, and design temperature is: heat≤170 ℃, heat interchanging area: 5 ~ 450m
2Design pressure is: tube side≤0.1MPa, shell side≤0.5MPa.
In other embodiments, the number of reactor can increase according to actual needs, such as thinking fourth-order reaction still etc.
In preferred embodiment, can be standby each other between each reactor.
In the present embodiment, first order reaction still 12, second order reaction still 13 and final stage reactor 14 are that band stirs, the enamel reaction still of chuck, and its type of heating is that the chuck indirect heating combines with the direct heating of interpolation exogenous steam pipe; Heating heating agent type is saturation steam; Saturated-steam temperature is 145 ~ 165 ℃; Operating pressure is 1MPa; The stripping temperature is 120 ~ 150 ℃.
In another kind of embodiment, first order reaction still 12, second order reaction still 13 and final stage reactor 14 are enamel reaction stills of not being with stirring, chuck, its type of heating is that the exogenous steam pipe by being opened on the reactor middle and lower part directly passes in reactor exogenous steam with material in the reacting by heating still, and technical parameter stirs with above-mentioned band, the enamel reaction still of chuck is consistent.
In another kind of embodiment, first order reaction still 12, second order reaction still 13 and final stage reactor 14 can be also steel lining tetrafluoroethylene reactors, and the technical parameter of this reactor is: 145 ~ 165 ℃ of saturated-steam temperatures, operating pressure are that 1MPa, stripping temperature are 120 ~ 150 ℃.
In the present embodiment, the operating pressure of ore pulp flash-pot 15 is 0.1MPa, the slurry temperature import be 150 ℃, the outlet be 136.5 ℃, flash distillation secondary stripping temperature is 119 ℃.
In the present embodiment, acid-resistant pipeline 16 is enamel acid-resistant pipelines.In other embodiments, acid-resistant pipeline 16 can be also steel lining tetrafluoroethylene acid-resistant pipeline.
In the present embodiment, be provided with valve on acid-resistant pipeline 16, steam-pipe 17 and exogenous steam pipe 18.
In the present embodiment, described alumina leaching equipment also comprises dilution trap 19 and dilution pumps 300, and dilution trap 19 is positioned at the downstream of ore pulp flash-pot 15 in the dissolving-out process flow process, is used for receiving the slip after evaporating; Dilution pumps 300 is positioned at the downstream of dilution trap 19 in the dissolving-out process flow process, be used for slurry pipeline transport with dilution trap to the sedimentation workshop.
Fig. 2 is the schematic diagram of the another kind of embodiment of alumina leaching equipment of the present utility model, this stripping equipment 2 comprises high pressure acid proof pump 20, one-level preheater 211, secondary preheater 212, first order reaction still 22, second order reaction still 23, third order reaction still 24, one-level ore pulp flash-pot 251 and secondary ore pulp flash-pot 252, wherein, high pressure acid proof pump 20 is used for the fly-ash mine stock pump is delivered to one-level preheater 211, one-level preheater 211, secondary preheater 212, first order reaction still 22, second order reaction still 23, third order reaction still 24, one-level ore pulp flash-pot 251 is connected with secondary ore pulp flash-pot and is connected successively according to the dissolving-out process flow process by acid-resistant pipeline 26, the vapour outlet of being connected with one-level ore pulp flash-pot in the steam-in of one-level preheater 211 connects by steam-pipe 271, the vapour outlet of being connected with secondary ore pulp flash-pot in the steam-in of secondary preheater 212 connects by steam-pipe 272, and reactor 22,23,24 middle and lower part are connected with exogenous steam pipe 28 respectively.This stripping equipment 2 also comprises dilution trap 29 and dilution pumps 30, and dilution trap 29 is positioned at the downstream of secondary ore pulp flash-pot 252 in the dissolving-out process flow process, is used for receiving the slip after evaporating; Dilution pumps 30 is positioned at the downstream of dilution trap 29 in the dissolving-out process flow process, be used for slurry pipeline transport with dilution trap 29 to the sedimentation workshop.
The concrete model of each device that uses in present embodiment can be identical with embodiment shown in Figure 1 with parameter.
When utilizing alumina leaching equipment work of the present utility model, the flyash ore pulp that conforms with index request that transports from compounding plant, be pumped to preheater by the high pressure acid proof pump, through after preheating, enter successively reactor heating at different levels, in the final stage reactor, the aluminum oxide in flyash and hydrochloric acid carry out chemical reaction at last, generate liquor alumini chloridi, insulation stops.The chuck place of the middle and lower part of each reactor and/or the reactor of jacketed is connected with the exogenous steam pipe, utilizes exogenous steam that the material in reactor is heated.Then the liquor alumini chloridi that obtains in the final stage reactor enters the ore pulp flash-pot; After flash distillation cooling, step-down, slip enters dilution trap, and is delivered to the sedimentation workshop by dilution pumps after the primary wash liquor hybrid cooling.The steam that produces in the ore pulp flash-pot inputs to corresponding preheater by steam-pipe, is used for the ore pulp of heating preheater.
Claims (9)
1. alumina leaching equipment, it is characterized in that, described alumina leaching equipment comprises high pressure acid proof pump, preheater, reactor and ore pulp flash-pot, wherein, the high pressure acid proof pump is used for the fly-ash mine stock pump is delivered to preheater, and preheater, reactor are connected acid-resistant pipeline with the ore pulp flash-pot and connect successively; The preheater steam-in connects by steam-pipe with ore pulp flash-pot vapour outlet, and the reactor middle and lower part is communicated with the exogenous steam pipe.
2. alumina leaching equipment according to claim 1, it is characterized in that, the number of described preheater and ore pulp flash-pot is respectively two, be respectively one-level preheater, secondary preheater, one-level ore pulp flash-pot, secondary ore pulp flash-pot, wherein one-level preheater steam-in is connected by steam-pipe with one-level ore pulp flash-pot vapour outlet, and secondary preheater steam-in is connected by steam-pipe with secondary ore pulp flash-pot vapour outlet.
3. alumina leaching equipment according to claim 1, is characterized in that, described preheater is enamel cannula primary heater or graphite tubulation preheater.
4. alumina leaching equipment according to claim 1, is characterized in that, the number of described reactor is three at least, connects by acid-resistant pipeline successively between reactor.
5. alumina leaching equipment according to claim 4, is characterized in that, described reactor is enamel reaction still or steel lining tetrafluoroethylene reactor.
6. alumina leaching equipment according to claim 5, is characterized in that, described enamel reaction still is that band stirs, the enamel reaction still of chuck, and at this moment, the exogenous steam pipe also is connected with the chuck of described enamel reaction still.
7. alumina leaching equipment according to claim 1, is characterized in that, described acid-resistant pipeline is enamel acid-resistant pipeline or steel lining tetrafluoroethylene acid-resistant pipeline.
8. according to claim 1-7 described alumina leaching equipment of any one, is characterized in that, is provided with valve on described acid-resistant pipeline, steam-pipe and exogenous steam pipe.
9. according to claim 1-7 described alumina leaching equipment of any one, it is characterized in that, described alumina leaching equipment also comprises dilution trap and dilution pumps, and described dilution trap is positioned at the downstream of ore pulp flash-pot in the dissolving-out process flow process, is used for receiving the slip after evaporating; Described dilution pumps is positioned at the downstream of dilution trap in the dissolving-out process flow process, be used for slurry pipeline transport with dilution trap to the sedimentation workshop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742350 CN203021307U (en) | 2012-12-28 | 2012-12-28 | Alumina dissolution equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742350 CN203021307U (en) | 2012-12-28 | 2012-12-28 | Alumina dissolution equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203021307U true CN203021307U (en) | 2013-06-26 |
Family
ID=48645303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220742350 Expired - Lifetime CN203021307U (en) | 2012-12-28 | 2012-12-28 | Alumina dissolution equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203021307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480995A (en) * | 2015-12-31 | 2016-04-13 | 杭州锦江集团有限公司 | Full-pipeline digestion system |
-
2012
- 2012-12-28 CN CN 201220742350 patent/CN203021307U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480995A (en) * | 2015-12-31 | 2016-04-13 | 杭州锦江集团有限公司 | Full-pipeline digestion system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |