CN103274382A - Preparation method of chromium phosphate - Google Patents
Preparation method of chromium phosphate Download PDFInfo
- Publication number
- CN103274382A CN103274382A CN 201310173483 CN201310173483A CN103274382A CN 103274382 A CN103274382 A CN 103274382A CN 201310173483 CN201310173483 CN 201310173483 CN 201310173483 A CN201310173483 A CN 201310173483A CN 103274382 A CN103274382 A CN 103274382A
- Authority
- CN
- China
- Prior art keywords
- preparation
- plessy
- product
- green
- chromium phosphate
- 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.)
- Pending
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- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 229910000151 chromium(III) phosphate Inorganic materials 0.000 title abstract 7
- IKZBVTPSNGOVRJ-UHFFFAOYSA-K chromium(iii) phosphate Chemical compound [Cr+3].[O-]P([O-])([O-])=O IKZBVTPSNGOVRJ-UHFFFAOYSA-K 0.000 title abstract 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 18
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 239000003999 initiator Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 4
- LAIOKZCTQAIQDM-UHFFFAOYSA-H chromium(3+);diphosphate;heptahydrate Chemical compound O.O.O.O.O.O.O.[Cr+3].[Cr+3].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LAIOKZCTQAIQDM-UHFFFAOYSA-H 0.000 claims description 24
- 238000002425 crystallisation Methods 0.000 claims description 7
- 230000008025 crystallization Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 235000011089 carbon dioxide Nutrition 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000000428 dust Substances 0.000 abstract description 5
- 239000000047 product Substances 0.000 abstract 5
- 239000006227 byproduct Substances 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 229910000423 chromium oxide Inorganic materials 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- GRWVQDDAKZFPFI-UHFFFAOYSA-H chromium(III) sulfate Chemical compound [Cr+3].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRWVQDDAKZFPFI-UHFFFAOYSA-H 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a preparation method of chromium phosphate. The preparation method comprises the following steps of: (1), adding phosphoric acid, chromium oxide, an initiator and water to a reaction kettle, stirring and heating up, so that carbon dioxide is overflowed to generate chromium phosphate; (2), crystallizing and separating the chromium phosphate generated in the step (1) to obtain a granular product, and placing the product in a drying sieve which is ventilate from top to bottom for drying and sieving to obtain the product. According to the preparation method of the chromium phosphate, byproducts are not generated in the reaction, the generated chromium phosphate is high in purity and granular, the separated product is easy to dry, the use of drying equipment is reduced, the production cost is lowered, the obtained crystallized product is unnecessary to crush, and most dust is avoided. Besides, the preparation method of the chromium phosphate is convenient to operate, simple and easy to implement and capable of improving production efficiency, and conveniently realizes industrial production.
Description
Technical field
The invention belongs to the technical field of compound, especially a kind of easy, preparation method of Plessy's green efficiently.
Background technology
Plessy's green more and more comes into one's own as a kind of effective chrome mineral additive, is with a wide range of applications.At present, the main production method of Plessy's green is to utilize sodium phosphate and chromium sulphate reaction, the product that obtains is thick thing, the purification processes difficulty, the problem that this type of preparation method exists: 1. in the purification processes step, need repeatedly crystallization, corresponding increase crystallizer, produce comparatively complexity, be difficult to reduce production costs; 2. finished product purity is low, and dust is a lot, and enterprise is difficult to mass production, is unfavorable for the development of enterprise and the raising of economic benefit.
Summary of the invention
The objective of the invention is provides a kind of preparation method of Plessy's green in order to overcome the deficiencies in the prior art, and the product that this method obtains need not repeatedly crystallization, has the advantage of saving facility investment, reducing cost, reducing dust, enhancing productivity.
The technical solution adopted in the present invention is as follows:
A kind of preparation method of Plessy's green, step is as follows:
⑴ drop into phosphoric acid, chromic oxide, initiator, water in the reactor, stirs, and heating is overflowed carbonic acid gas, generates Plessy's green;
⑵ carry out Crystallization Separation with the Plessy's green that step ⑴ generates, and obtains granular disintegration, and product is placed ventilative up and down dry sieve oven dry, sieves, and obtains product.
Described initiator is aminated compounds, and its chemical general formula is H
2NRHN, [R can be H; Also can be C
nH
2n+1, n=1 wherein, 2,3,4,5,6] aminated compounds.
The mol ratio of described phosphoric acid, chromic oxide, initiator, water is 1:0.5-0.6:0.2-0.5:15;
Described dry sieve is stainless steel sift.
The invention has the beneficial effects as follows:
1. the preparation method of this Plessy's green uses phosphoric acid to replace sodium phosphate in feeding intake, and uses chromic oxide to replace chromium sulphate, the product that obtains has only Plessy's green, product is single, purity is high, be particulate state, be easy to drying after separating, and the crystalline product that obtains need not to pulverize, and has avoided a large amount of dust.
2. the granular product that obtains of the preparation method of this Plessy's green is easy to drying, reduces protection and equipment, has saved facility investment, has reduced running cost.
3. the preparation method of this Plessy's green has easy to operately, simplely is convenient to realize suitability for industrialized production, enhances productivity.
4. the present invention uses chromic oxide and initiator in process of production, guarantees to obtain granular product, is beneficial to drying, need not pulverize, avoid dust, it is simple that the present invention simultaneously has realization, convenience operation has been saved investment in production equipment, has improved production efficiency.
Embodiment
The present invention is further described below by specific embodiment:
Embodiment 1
A kind of preparation method of Plessy's green, step is as follows:
⑴ drop into 100mol phosphoric acid successively, 1500mol water, 50mol chromic oxide in the 100L reactor that has heating unit, electricity stirring, temperature regulating device, the 20mol hydrazine hydrate stirs and is heated to 70-80 ℃ and reacts, and churning time is 6 hours, stop heating, salt-forming reaction is finished;
⑵ carry out Crystallization Separation with the Plessy's green that generates, and the granular product that obtains is placed on and puts into loft drier in the ventilative up and down stainless steel dry sieve and dry, and drying time is 24 hours, sieves to obtain product, and content is greater than 99%.
Embodiment 2
A kind of preparation method of Plessy's green, step is as follows:
⑴ drop into 100mol phosphoric acid, 1500mol water, 50mol chromic oxide, 30mol hydrazine hydrate successively in the 100L reactor that has heating unit, electricity stirring, temperature regulating device, stir and be heated to 70-80 ℃ and react, churning time is 6 hours, stops heating, and salt-forming reaction is finished;
⑵ carry out Crystallization Separation with the Plessy's green that generates, and the granular product that obtains is placed on and puts into loft drier in the ventilative up and down stainless steel dry sieve and dry, and drying time is 24 hours, sieves to obtain product, and content is greater than 99%.
Embodiment 3
A kind of preparation method of Plessy's green, step is as follows:
⑴ drop into 100mol phosphoric acid, 1500mol water, 50mol chromic oxide, 40mol hydrazine hydrate successively in the 100L reactor that has heating unit, electricity stirring, temperature regulating device, stir and be heated to 70-80 ℃ and react, churning time is 6 hours, stops heating, and salt-forming reaction is finished;
⑵ carry out Crystallization Separation with the Plessy's green that generates, and the granular product that obtains is placed on and puts into loft drier in the ventilative up and down stainless steel dry sieve and dry, and drying time is 24 hours, sieves to obtain product, and content is greater than 99%.
It is emphasized that; example of the present invention is illustrative; rather than it is determinate; therefore the present invention is not limited to the embodiment described in the embodiment; every other embodiments that drawn by those skilled in the art's technical scheme according to the present invention belong to the scope of protection of the invention equally.
Claims (4)
1. the preparation method of a Plessy's green, it is characterized in that: step is as follows:
⑴ drop into phosphoric acid, chromic oxide, initiator, water in the reactor, stirs, and heating is overflowed carbonic acid gas, generates Plessy's green;
⑵ carry out Crystallization Separation with the Plessy's green that step ⑴ generates, and obtains granular disintegration, and product is placed ventilative up and down dry sieve oven dry, sieves, and obtains product.
2. the preparation method of Plessy's green according to claim 1, it is characterized in that: described initiator is aminated compounds, its chemical general formula is H
2NRHN, R are H or C
nH
2n+1, n=1 wherein, 2,3,4,5,6.
3. the preparation method of Plessy's green according to claim 1, it is characterized in that: the mol ratio of described phosphoric acid, chromic oxide, initiator, water is 1:0.5-0.6:0.2-0.5:15.
4. the preparation method of Plessy's green according to claim 1, it is characterized in that: described dry sieve is stainless steel sift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310173483 CN103274382A (en) | 2013-05-13 | 2013-05-13 | Preparation method of chromium phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310173483 CN103274382A (en) | 2013-05-13 | 2013-05-13 | Preparation method of chromium phosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103274382A true CN103274382A (en) | 2013-09-04 |
Family
ID=49057045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310173483 Pending CN103274382A (en) | 2013-05-13 | 2013-05-13 | Preparation method of chromium phosphate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103274382A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445132A (en) * | 2014-11-27 | 2015-03-25 | 三峡大学 | Method for preparing chromium phosphate by utilizing diene chrome waste liquid |
-
2013
- 2013-05-13 CN CN 201310173483 patent/CN103274382A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445132A (en) * | 2014-11-27 | 2015-03-25 | 三峡大学 | Method for preparing chromium phosphate by utilizing diene chrome waste liquid |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130904 |