CN206624648U - A kind of device of crude product sodium pyrophosphate pretreatment - Google Patents
A kind of device of crude product sodium pyrophosphate pretreatment Download PDFInfo
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- CN206624648U CN206624648U CN201720246326.1U CN201720246326U CN206624648U CN 206624648 U CN206624648 U CN 206624648U CN 201720246326 U CN201720246326 U CN 201720246326U CN 206624648 U CN206624648 U CN 206624648U
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- CN
- China
- Prior art keywords
- sodium pyrophosphate
- filter
- charging aperture
- stirred tank
- crude product
- Prior art date
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- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 title claims abstract description 65
- 229940048086 sodium pyrophosphate Drugs 0.000 title claims abstract description 65
- 235000019818 tetrasodium diphosphate Nutrition 0.000 title claims abstract description 65
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 title claims abstract description 65
- 239000012043 crude product Substances 0.000 title claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 238000000967 suction filtration Methods 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims abstract description 17
- 238000004090 dissolution Methods 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 239000002699 waste material Substances 0.000 claims abstract description 9
- 239000012452 mother liquor Substances 0.000 abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002002 slurry Substances 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 239000000706 filtrate Substances 0.000 description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005360 mashing Methods 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 229940005657 pyrophosphoric acid Drugs 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 239000013527 degreasing agent Substances 0.000 description 1
- 238000005237 degreasing agent Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
Abstract
It the utility model is related to a kind of device of crude product sodium pyrophosphate pretreatment, including stirred tank, waste tank and dissolution kettle, paddle is provided with the stirred tank, filter is provided with below paddle, filter will be separated into stir chamber and filter chamber in stirred tank, stirred tank is provided with first charging aperture, second charging aperture, suction filtration mouth and discharging opening, first charging aperture and second charging aperture are located at the top of stirred tank, it is connected with stir chamber, suction filtration mouth is located at the bottom of stirred tank, it is connected with filtering chamber, discharging opening is between first charging aperture and suction filtration mouth, it is connected with stir chamber；Suction filtration mouth is connected by the first pipeline with the 3rd charging aperture of waste tank, discharging opening is connected by second pipe with dissolution kettle, and crude product sodium pyrophosphate is washed and concentrated, the water in sodium pyrophosphate mother liquor is recycled, the dosage of sodium pyrophosphate mother liquor is reduced, reduces concentrated cost.
Description
Technical field
It the utility model is related to a kind of Sodium pyrophosphate preparation technology field, and in particular to a kind of crude product sodium pyrophosphate pretreatment
Device.
Background technology
Sodium pyrophosphate is an important kind in condensed phosphate.Either technical grade and food-grade, its dosage are only secondary
In sodium tripolyphosphate.It is industrial to be mainly used in complexing agent, degreasing agent, water treatment agent, washing printing and dyeing bleaching assistant, dispersant etc..
Water holding in food industry then for food is fresh-keeping, anti-oxidant etc., is referred to as quality improver.With China's technical grade and food
The market fast development of level sodium pyrophosphate, the application of associated core production technology, research and develop and looked forward in the industry with improving to turn into
The concern of industry.The improvement of the production technology of sodium pyrophosphate is very crucial for enterprise's lifting market competitiveness with research and development.And burnt phosphorus
Sour sodium demand is just in the trend that increases substantially year by year.According to statistics, national sodium pyrophosphate volume of production and marketing annual average rate of increase is
7% or so, so the development potentiality in pyrophosphoric acid market is very big.
Crude product sodium pyrophosphate is that phosphorus-containing wastewater is obtained in high temperature furnace by flame incineration, for purifying sodium pyrophosphate
One of raw material, before the dissolving of crude product sodium pyrophosphate, first it is washed, due to reacting incomplete in washing process, meeting
Material is hardened, influence the filtering and later stage conveying of material.
Utility model content
The utility model proposes a kind of device of crude product sodium pyrophosphate pretreatment regarding to the issue above, to crude product pyrophosphoric acid
Sodium is washed and concentrated, and the water in sodium pyrophosphate mother liquor is recycled, and reduces the dosage of sodium pyrophosphate mother liquor, is reduced
Concentrated cost.
Specific technical scheme is as follows：
A kind of device of crude product sodium pyrophosphate pretreatment, including stirred tank, waste tank and dissolution kettle, in the stirred tank
Provided with paddle, filter is provided with below paddle, filter will be separated into stir chamber and filter chamber in stirred tank, on stirred tank
Provided with first charging aperture, second charging aperture, suction filtration mouth and discharging opening, first charging aperture and second charging aperture are located at the top of stirred tank
Portion, it is connected with stir chamber, suction filtration mouth is located at the bottom of stirred tank, is connected with filtering chamber, discharging opening is located at first charging aperture
Between suction filtration mouth, it is connected with stir chamber；Suction filtration mouth is connected by the first pipeline with the 3rd charging aperture of waste tank, is gone out
Material mouth is connected by second pipe with dissolution kettle.
A kind of device of above-mentioned crude product sodium pyrophosphate pretreatment, wherein, the discharging opening is located above filter.
The beneficial effects of the utility model are：
The utility model is greatly lowered fresh water consumption and needs burnt mother liquid of sodium amount to be processed；Reduce raw material and bring production into
Impurity (sodium chloride and organic matter that 50-80% in crude product can be removed), reduce production difficulty and production cost, improve product matter
Amount.
At the same time, portion filtrate is first filtered in washing process, filter residue is in state sticky but not being fully cured, then
The new direct rising temperature for dissolving of sodium pyrophosphate mother liquor is added, then moves into progress next step reaction in dissolution kettle, process is simplified, improves
Efficiency, reduces cost.
Brief description of the drawings
Fig. 1 is the utility model wash mill sectional view.
Fig. 2 is the utility model filter sectional view.
Fig. 3 is the utility model sheet frame sectional view.
Fig. 4 is the utility model filter group explosive view.
Fig. 5 is the utility model filter top view.
Embodiment
To make the technical solution of the utility model become apparent from clearly, below in conjunction with the accompanying drawings entering the utility model traveling one
Step description, any scheme drawn to the technical characteristic progress equivalencing of technical solutions of the utility model and conventional reasoning fall
Enter scope of protection of the utility model.
Reference
Stirred tank 1, waste tank 2, dissolution kettle 3, paddle 4, filter 5, stir chamber 6, suction filtration chamber 7, first charging aperture
8th, second charging aperture 9, suction filtration mouth 10, discharging opening 11, the first pipeline 12, second pipe 13, sheet frame 14, filtering plate body 15, top plate
16th, bottom plate 17, side wall 18, the first filter 19, the second filter 20, the first raised line 21, the first groove 22, the second raised line 23.
Embodiment one
A kind of device of crude product sodium pyrophosphate pretreatment, including stirred tank 1, waste tank 2 and dissolution kettle 3, the stirring
Paddle 4 is provided with kettle, filter 5 is provided with below paddle, filter will be separated into stir chamber 6 and filter chamber 7 in stirred tank,
Stirred tank is provided with first charging aperture 8, second charging aperture 9, suction filtration mouth 10 and discharging opening 11, first charging aperture and second charging aperture
Positioned at the top of stirred tank, it is connected with stir chamber, suction filtration mouth is located at the bottom of stirred tank, is connected with filtering chamber, discharging opening
Between first charging aperture and suction filtration mouth, it is connected with stir chamber；Suction filtration mouth pass through the first pipeline 12 and waste tank the
Three charging apertures are connected, and discharging opening is connected by second pipe 13 with dissolution kettle.
The further filter includes sheet frame 14 and filters plate body 15, top plate 16 of the sheet frame including cirque structure,
The bottom plate 17 of cirque structure and the circle side wall 18 being fixed between top plate and bottom plate, the thickness h 1 of side wall are less than top plate
Wall wide h2, the wall wide h2 of top plate are equal to the wall wide h3 of bottom plate, and filtering plate body is arranged on the cavity that top plate, bottom plate and side wall are surrounded
Interior, the filtering plate body includes two filter groups, and each filter group includes the first filter 19 and the second filter 20, the
The lower surface of one filter is uniformly provided with some first raised lines 21, and the first groove 22 is formed between adjacent two the first raised lines,
The upper surface of second filter is uniformly provided with some second raised lines 23, and the second groove is formed between adjacent two the second raised lines
24, the width of the first raised line is L1, and the width of the first groove is L2, and the width of the second raised line is L3, and the width of the second groove is
L4, L1=L3 ＞ L2=L4, the first filter are positioned over the top of the second filter, and the first raised line and the second raised line are staggeredly set
Put, the first raised line of the first filter is pressed together on the second groove of the second filter, the second raised line pressure of the second filter
Close on the first groove of the first filter, two filter group mirror images are set, and the second filter of two filter groups is mutual
Contact.
Further, the aperture of first filter is more than the aperture of the second filter.
The structure setting of filter, the filter effect of filter is added significantly to, reduces impurity content in filtrate, dropped with this
The difficulty of low subsequent concentration processing.
The step of being washed using this wash mill to crude product sodium pyrophosphate is as follows：
(1) previous cleaning：Crude product sodium pyrophosphate and sodium pyrophosphate mother liquor are added in the stirred tank with filter, in 15 DEG C of temperature
The lower stirring 2.2h of degree so that with the water in sodium pyrophosphate mother liquor hydration reaction occurs for anhydrous sodium pyrophosphate, forms crystalline hydrate,
The part water in sodium pyrophosphate mother liquor is reclaimed, while the sodium chloride in crude product and organic matter are washed, enters remaining Jiao
In phosphoric acid mother liquid of sodium, the purpose of concentrate sodium pyrophosphate mother liquor is played, and sodium pyrophosphate mother liquor is previously cooled to less than 15 DEG C
Washed again, finally give mixed liquor；
(2) filter：After mixed liquor reacts in stirred tank and washed completely, 60% is extracted or extruded out by filter
Filtrate, the filtrate for retaining 40% in slurry, avoid solid block in kettle, maintain to mix slowly；
(3) mashing discharging：Filtering adds heat into stirred tank immediately sodium pyrophosphate after terminating is applied mechanically mother liquor and re-started
Mashing so that sodium pyrophosphate dissolution of crystals, the sodium pyrophosphate slurries diluted after stirring；
(4) convey, dissolve：The sodium pyrophosphate slurries of dilution are transferred in dissolution kettle and further heat up dissolving, filtering, knot
Crystalline substance, produce sodium pyrophosphate.
Embodiment two
A kind of device of crude product sodium pyrophosphate pretreatment as described in embodiment one, its difference are：
The step of being washed using this wash mill to crude product sodium pyrophosphate is as follows：
(1) previous cleaning：Crude product sodium pyrophosphate and sodium pyrophosphate mother liquor are added in the stirred tank with filter, in 20 DEG C of temperature
The lower stirring 1.3h of degree so that with the water in sodium pyrophosphate mother liquor hydration reaction occurs for anhydrous sodium pyrophosphate, forms crystalline hydrate,
The part water in sodium pyrophosphate mother liquor is reclaimed, while the sodium chloride in crude product and organic matter are washed, enters remaining Jiao
In phosphoric acid mother liquid of sodium, the purpose of concentrate sodium pyrophosphate mother liquor is played, and sodium pyrophosphate mother liquor is previously cooled to less than 15 DEG C
Washed again, finally give mixed liquor；
(2) filter：After mixed liquor reacts in stirred tank and washed completely, 72% is extracted or extruded out by filter
Filtrate, the filtrate for retaining 38% in slurry, avoid solid block in kettle, maintain to mix slowly；
(3) mashing discharging：Filtering adds heat into stirred tank immediately sodium pyrophosphate after terminating is applied mechanically mother liquor and re-started
Mashing so that sodium pyrophosphate dissolution of crystals, the sodium pyrophosphate slurries diluted after stirring；
(4) convey, dissolve：The sodium pyrophosphate slurries of dilution are transferred in dissolution kettle and further heat up dissolving, filtering, knot
Crystalline substance, produce sodium pyrophosphate.
Embodiment three
A kind of device of crude product sodium pyrophosphate pretreatment as described in embodiment one, its difference are：
The step of being washed using this wash mill to crude product sodium pyrophosphate is as follows：
(1) previous cleaning：Crude product sodium pyrophosphate and sodium pyrophosphate mother liquor are added in the stirred tank with filter, in 26 DEG C of temperature
The lower stirring 3.7h of degree so that with the water in sodium pyrophosphate mother liquor hydration reaction occurs for anhydrous sodium pyrophosphate, forms crystalline hydrate,
The part water in sodium pyrophosphate mother liquor is reclaimed, while the sodium chloride in crude product and organic matter are washed, enters remaining Jiao
In phosphoric acid mother liquid of sodium, the purpose of concentrate sodium pyrophosphate mother liquor is played, and sodium pyrophosphate mother liquor is previously cooled to less than 15 DEG C
Washed again, finally give mixed liquor；
(2) filter：After mixed liquor reacts in stirred tank and washed completely, 55% is extracted or extruded out by filter
Filtrate, the filtrate for retaining 45% in slurry, avoid solid block in kettle, maintain to mix slowly；
(3) mashing discharging：Filtering adds heat into stirred tank immediately sodium pyrophosphate after terminating is applied mechanically mother liquor and re-started
Mashing so that sodium pyrophosphate dissolution of crystals, the sodium pyrophosphate slurries diluted after stirring；
(4) convey, dissolve：The sodium pyrophosphate slurries of dilution are transferred in dissolution kettle and further heat up dissolving, filtering, knot
Crystalline substance, produce sodium pyrophosphate.
Claims (2)
1. a kind of device of crude product sodium pyrophosphate pretreatment, it is characterized in that, including stirred tank, waste tank and dissolution kettle, it is described
Paddle is provided with stirred tank, filter is provided with below paddle, filter will be separated into stir chamber and filter chamber in stirred tank,
Stirred tank is provided with first charging aperture, second charging aperture, suction filtration mouth and discharging opening, and first charging aperture and second charging aperture, which are located at, to be stirred
The top of kettle is mixed, is connected with stir chamber, suction filtration mouth is located at the bottom of stirred tank, is connected with filtering chamber, discharging opening is positioned at the
Between one charging aperture and suction filtration mouth, it is connected with stir chamber；Suction filtration mouth passes through the first pipeline and the 3rd charging aperture of waste tank
It is connected, discharging opening is connected by second pipe with dissolution kettle.
2. a kind of device of crude product sodium pyrophosphate pretreatment as claimed in claim 1, it is characterized in that, the discharging opening was located at
Above filter plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720246326.1U CN206624648U (en) | 2017-03-14 | 2017-03-14 | A kind of device of crude product sodium pyrophosphate pretreatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720246326.1U CN206624648U (en) | 2017-03-14 | 2017-03-14 | A kind of device of crude product sodium pyrophosphate pretreatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206624648U true CN206624648U (en) | 2017-11-10 |
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ID=60208010
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720246326.1U Active CN206624648U (en) | 2017-03-14 | 2017-03-14 | A kind of device of crude product sodium pyrophosphate pretreatment |
Country Status (1)
| Country | Link |
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| CN (1) | CN206624648U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106809812A (en) * | 2017-03-14 | 2017-06-09 | 镇江江南化工有限公司 | A kind of method and device of crude product sodium pyrophosphate pretreatment |
-
2017
- 2017-03-14 CN CN201720246326.1U patent/CN206624648U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106809812A (en) * | 2017-03-14 | 2017-06-09 | 镇江江南化工有限公司 | A kind of method and device of crude product sodium pyrophosphate pretreatment |
| CN106809812B (en) * | 2017-03-14 | 2023-05-23 | 镇江江南化工有限公司 | Method and device for preprocessing crude sodium pyrophosphate |
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