CN206447973U - The system that a kind of waste phosphogypsum produces anhydrous calcium sulfate whisker - Google Patents
The system that a kind of waste phosphogypsum produces anhydrous calcium sulfate whisker Download PDFInfo
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- CN206447973U CN206447973U CN201720140169.6U CN201720140169U CN206447973U CN 206447973 U CN206447973 U CN 206447973U CN 201720140169 U CN201720140169 U CN 201720140169U CN 206447973 U CN206447973 U CN 206447973U
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- filter
- water scrubber
- waste
- calcium sulfate
- anhydrous calcium
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Abstract
The utility model discloses the system that a kind of waste phosphogypsum produces anhydrous calcium sulfate whisker, to solve the problem of synthesis rate of ardealite utilizes low.The system that waste phosphogypsum described in the utility model produces anhydrous calcium sulfate whisker, it includes, the equipment such as reaction tower, the first filter, waste liquid pool, the first water scrubber group, hydrothermal reaction kettle, the second filter, the second water scrubber group, drying machine, kiln, seal box, absorption tower, settling tank.The system that anhydrous calcium sulfate whisker is produced by using waste phosphogypsum described in the utility model, it can be achieved waste phosphogypsum being produced as anhydrous calcium sulfate whisker product, it is achieved that effective utilization to waste phosphogypsum, the commercial value of ardealite is improved, the purpose of " turning waste into wealth " is finally reached.
Description
Technical field
The utility model is related to the system that a kind of waste phosphogypsum produces anhydrous calcium sulfate whisker.
Background technology
Ardealite, refers in phosphoric acid production the solid slag produced during with sulfuric acid treating phosphorite, and its main component is
CaSO42H2O, additionally containing various other impurity.At present in Europe, the United States, Deng industrially developed country, then pay much attention to pair
The comprehensive utilization of ardealite, the research that plaster of Paris is such as made by raw material of ardealite has been enter into the stage of ripeness, can completely carry
Go out a set of process production techniques and equipment, the plaster of Paris being made can be better than or with the building being equal to using the natural gypsum as raw material
Gypsum.It is most of to be handled for calcellation but current most of enterprise of China is still relatively low for the utilization ratio of ardealite, because
And cause the substantial amounts of wasting of resources.
Utility model content
The utility model solve technical problem be：For ardealite utilization rate it is low the problem of can will be discarded there is provided one kind
The system that ardealite is produced as anhydrous calcium sulfate whisker, to improve the utilization ratio of ardealite.
The utility model solves the technical scheme that its technical problem used：A kind of waste phosphogypsum produces anhydrous slufuric acid
The system of calcium pyroborate, including,
Reaction tower, the reaction tower is used for waste phosphogypsum and mixing pickle is reacted；
First filter, the solidliquid mixture that first filter is used to discharge after reacting from reaction tower carries out solid-liquid
It is separated by filtration；
Waste liquid pool, the waste liquid pool is used to store the filtrate after the first filter is separated by filtration；
First water scrubber group, the first water scrubber group is used for the solid matter after the first filter is separated by filtration
Carry out washing process；
Hydrothermal reaction kettle, the hydrothermal reaction kettle is used to enter water-filling to the solid matter after the washing of the first water scrubber group
Thermal response；
Second filter, the solidliquid mixture that second filter is used to discharge after reacting from hydrothermal reaction kettle is carried out
Solid-liquid filtration is separated；
Second water scrubber group, the second water scrubber group is used for the solid matter after the second filter is separated by filtration
Carry out washing process；
Drying machine, the drying machine is used to processing is dried to the solid matter after the washing of the second water scrubber group；
Kiln, the kiln is used to carry out calcination process to the solid matter after drying machine drying process；
Seal box, the seal box is used to store the solid matter after kiln is calcined；
Absorption tower, the absorption tower is used to absorb the carbon dioxide produced in kiln roasting process；
Settling tank, the settling tank is used to carry out settlement treatment to the slurries produced in absorption tower.
It is further：The first water scrubber group includes the first water scrubber, the 3rd filter, the second water set gradually
Wash tower, the 4th filter.
It is further：The second water scrubber group includes the 3rd water scrubber, the 5th filter, the 4th water set gradually
Wash tower, the 6th filter, the 5th water scrubber and the 7th filter.
It is further：The reaction tower and hydrothermal reaction kettle are respectively provided with agitating device.
The beneficial effects of the utility model are：Anhydrous slufuric acid is produced by using waste phosphogypsum described in the utility model
The system of calcium pyroborate, can be achieved waste phosphogypsum being produced as anhydrous calcium sulfate whisker product, it is achieved that to waste phosphorus stone
Effective utilization of cream, improves the commercial value of ardealite, is finally reached the purpose of " turning waste into wealth ".
Brief description of the drawings
Fig. 1 is the schematic diagram for the system that waste phosphogypsum described in the utility model produces anhydrous calcium sulfate whisker；
Marked in figure：Reaction tower 1, the first filter 2, waste liquid pool 3, hydrothermal reaction kettle 4, the second filter 5, drying machine
6th, kiln 7, seal box 8, absorption tower 9, settling tank 10, the first water scrubber 11, the second water scrubber 12, the 3rd water scrubber the 13, the 4th
Water scrubber 14, the 5th water scrubber 15, the 3rd filter 16, the 4th filter 17, the 5th filter 18, the 6th filter 19,
Seven filters 20, the first buffer tank 21, the second buffer tank 22, the 3rd buffer tank 23, the 4th buffer tank 24, the 5th buffer tank 25.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and detailed description.
A kind of specific example as shown in Figure 1, waste phosphogypsum production dead plaster described in the utility model is brilliant
The system of palpus, including,
Reaction tower 1, the reaction tower 1 is used for waste phosphogypsum and mixing pickle is reacted；
First filter 2, the solidliquid mixture that first filter 2 is used to discharge after reacting from reaction tower 1 is carried out
Solid-liquid filtration is separated；
Waste liquid pool 3, the waste liquid pool 3 is used to store the filtrate after the first filter 2 is separated by filtration；
First water scrubber group, the first water scrubber group is used for the solids after the first filter 2 is separated by filtration
Matter carries out washing process；
Hydrothermal reaction kettle 4, the hydrothermal reaction kettle 4 is used to carry out the solid matter after the washing of the first water scrubber group
Hydro-thermal reaction；
Second filter 5, second filter 5 is used for the solidliquid mixture discharged after being reacted from hydrothermal reaction kettle 4
Carry out solid-liquid filtration separation；
Second water scrubber group, the second water scrubber group is used for the solids after the second filter 5 is separated by filtration
Matter carries out washing process；
Drying machine 6, the drying machine 6 is used to place is dried to the solid matter after the washing of the second water scrubber group
Reason；
Kiln 7, the kiln 7 is used to carry out calcination process to the solid matter after the drying process of drying machine 6；
Seal box 8, the seal box 8 is used to store the solid matter after the roasting of kiln 7；
Absorption tower 9, the absorption tower 9 is used to absorb the carbon dioxide produced in the roasting process of kiln 7；
Settling tank 10, the settling tank 10 is used to carry out settlement treatment to the slurries produced in absorption tower 9.
Wherein, the first water scrubber group may include the first water scrubber 11, the 3rd filter 16, the second water scrubber set gradually
12nd, the 4th filter 17；It can so be realized by the first water scrubber group at corresponding solid matter progress washing twice, filtering
Manage, and then ensure to enter the acid solution of the attachment of the solid matter surface in hydrothermal reaction kettle 4 and cleaned up substantially.
Without loss of generality, the second water scrubber group may also comprise the 3rd water scrubber 13 set gradually, the 5th filter 18,
Four water scrubbers 14, the 6th filter 19, the 5th water scrubber 15 and the 7th filter 20.That is the second water scrubber group can be achieved to passing through
Solid matter after second filter 5 is separated by filtration carries out three washings, filtration treatments, to ensure water washing effect.
More specifically, the annexation shown in accompanying drawing 1 is may further reference, by setting corresponding first buffer tank 21,
Two buffer tanks 22, the 3rd buffer tank 23, the 4th buffer tank 24 and the 5th buffer tank 25 etc. are realized anti-to the first water scrubber group, hydro-thermal
Answer the multiple times of filtration carried out in the water scrubber group of kettle 4 and second, the solution of washing to be reclaimed and reused, it is specific reclaim with
Recycling can refer to the setting described in accompanying drawing 1.Also, the solution after being generally reused many times can be finally stored to second
In buffer tank 22, afterwards further according to needing to be added into the first buffer tank 21 and by adding phase into first buffer tank 21
Answer the mixing for being used to be added in reaction tower 1 of concentration needed for configuration is formed after the extra hydrochloric acid solution and sulfuric acid solution of concentration
Pickle.
In addition, the speed in order to improve reaction, the utility model is further interior respectively in reaction tower 1 and hydrothermal reaction kettle 4
Provided with agitating device.The reaction rate in reaction tower 1 and hydrothermal reaction kettle 4 is improved by the stirring action of agitating device.
Referring to the drawings shown in 1, a kind of typical process flow of the present utility model is as follows：
Waste phosphogypsum is added in the reaction tower 1 with agitating device, while adding mixing pickle into reaction tower 1
To carry out pickling processes to waste phosphogypsum, wherein hydrochloric acid solution and weight that mixing pickle can be by weight accounting for 12 ~ 20%
Accounting is composition after 50 ~ 70% sulfuric acid solution mixing.Waste phosphogypsum can be dissolved by the pickling reaction in reaction tower 1
The middle acid-soluble solid matter of major part, such as Al, Fe oxide.
Then the solidliquid mixture after fully being reacted in reaction tower 1 is added in the first filter 2 and carries out separation of solid and liquid,
The solid matter wherein isolated, which enters, carries out multiple washing process in the first water scrubber group, and eventually passes through after washing process
Solid matter be added in hydrothermal reaction kettle 4 and carry out subsequent reactions processing.And the filter filtered to isolate by the first filter 2
Liquid, which enters in waste liquid pool 3, to be placed.Wherein, can be by multiple water during carrying out multiple washing process in the first water scrubber group
The solution for washing processing is recycled, and using the solution after final washing as being configured in reaction tower 1 needed for reaction
Mix the solution of pickle.
Solid matter after washing process is added in hydrothermal reaction kettle 4, then carries out hydro-thermal reaction processing to it, wherein
Temperature may be configured as 120-180 degrees Celsius, reaction time 3-6h, and solidliquid mixture is passed through into the second filter again after hydro-thermal reaction
5 carry out separation of solid and liquid, are carried out wherein the solid matter filtered to isolate by the second filter 5 then enters in the second water scrubber group
Multiple washing process, and eventually pass through the solid matter after washing process and be added in drying machine 6 processing is dried.
It is added to by the dried solid matter of drying machine 6 in kiln 7 and carries out calcination process, the product after roasting is finally deposited
Storage is in seal box 8；And it is stored in the material as calcium sulfate crystal whiskers in fully sheathed case 8.Wherein, carry out being calcined in kiln 7
Cheng Zhong, will produce substantial amounts of carbon dioxide, and in order to absorb the carbon dioxide of the generation, be further provided with absorption tower
9, and use calcium oxide in absorption tower 9（CaO）Solution carries out the absorption to carbon dioxide, and after absorbing carbon dioxide,
Calcium carbonate will be produced in absorption tower 9（CaCO3）Slurries, settling tank 10 is further provided with for this, will be produced in absorption tower 9
Raw calcium carbonate serosity carries out settlement treatment in settling tank 10.
Described above, preferred embodiment only of the present utility model is all not pay not to limit the utility model
In the case of creative work, any modification, equivalent substitution and improvements done in spirit of the present utility model and principle etc.,
It should be included within protection domain of the present utility model.
Claims (4)
1. the system that a kind of waste phosphogypsum produces anhydrous calcium sulfate whisker, it is characterised in that：Including,
Reaction tower（1）, the reaction tower（1）Reacted for waste phosphogypsum and mixing pickle；
First filter（2）, first filter（2）For will be from reaction tower（1）The solidliquid mixture discharged after reaction enters
Row solid-liquid filtration is separated；
Waste liquid pool（3）, the waste liquid pool（3）For to passing through the first filter（2）Filtrate after being separated by filtration is stored；
First water scrubber group, the first water scrubber group is used for passing through the first filter（2）Solid matter after being separated by filtration
Carry out washing process；
Hydrothermal reaction kettle（4）, the hydrothermal reaction kettle（4）For being carried out to the solid matter after the washing of the first water scrubber group
Hydro-thermal reaction；
Second filter（5）, second filter（5）For will be from hydrothermal reaction kettle（4）The solid-liquid mixing discharged after reaction
Thing carries out solid-liquid filtration separation；
Second water scrubber group, the second water scrubber group is used for passing through the second filter（5）Solid matter after being separated by filtration
Carry out washing process；
Drying machine（6）, the drying machine（6）For place to be dried to the solid matter after the washing of the second water scrubber group
Reason；
Kiln（7）, the kiln（7）For to passing through drying machine（6）Solid matter after drying process carries out calcination process；
Seal box（8）, the seal box（8）For to passing through kiln（7）Solid matter after roasting is stored；
Absorption tower（9）, the absorption tower（9）For to kiln（7）The carbon dioxide produced in roasting process is absorbed；
Settling tank（10）, the settling tank（10）For to absorption tower（9）The slurries of middle generation carry out settlement treatment.
2. the system that a kind of waste phosphogypsum as claimed in claim 1 produces anhydrous calcium sulfate whisker, it is characterised in that：It is described
First water scrubber group includes the first water scrubber set gradually（11）, the 3rd filter（16）, the second water scrubber（12）, the 4th mistake
Filter（17）.
3. the system that a kind of waste phosphogypsum as claimed in claim 1 produces anhydrous calcium sulfate whisker, it is characterised in that：It is described
Second water scrubber group includes the 3rd water scrubber set gradually（13）, the 5th filter（18）, the 4th water scrubber（14）, the 6th mistake
Filter（19）, the 5th water scrubber（15）With the 7th filter（20）.
4. the system that a kind of waste phosphogypsum as claimed in claim 1 produces anhydrous calcium sulfate whisker, it is characterised in that：It is described
Reaction tower（1）And hydrothermal reaction kettle（4）Respectively it is provided with agitating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140169.6U CN206447973U (en) | 2017-02-16 | 2017-02-16 | The system that a kind of waste phosphogypsum produces anhydrous calcium sulfate whisker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140169.6U CN206447973U (en) | 2017-02-16 | 2017-02-16 | The system that a kind of waste phosphogypsum produces anhydrous calcium sulfate whisker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206447973U true CN206447973U (en) | 2017-08-29 |
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ID=59665996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720140169.6U Expired - Fee Related CN206447973U (en) | 2017-02-16 | 2017-02-16 | The system that a kind of waste phosphogypsum produces anhydrous calcium sulfate whisker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206447973U (en) |
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2017
- 2017-02-16 CN CN201720140169.6U patent/CN206447973U/en not_active Expired - Fee Related
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Granted publication date: 20170829 Termination date: 20180216 |
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| CF01 | Termination of patent right due to non-payment of annual fee |