CN106629784B - A kind of technique of adding halogen method production rice-shaped crystallization potassium nitrate - Google Patents
A kind of technique of adding halogen method production rice-shaped crystallization potassium nitrate Download PDFInfo
- Publication number
- CN106629784B CN106629784B CN201611058700.1A CN201611058700A CN106629784B CN 106629784 B CN106629784 B CN 106629784B CN 201611058700 A CN201611058700 A CN 201611058700A CN 106629784 B CN106629784 B CN 106629784B
- Authority
- CN
- China
- Prior art keywords
- potassium nitrate
- rice
- cooling
- shaped
- obtains
- 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.)
- Active
Links
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 235000010333 potassium nitrate Nutrition 0.000 title claims abstract description 51
- 239000004323 potassium nitrate Substances 0.000 title claims abstract description 51
- 238000002425 crystallisation Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 230000008025 crystallization Effects 0.000 title claims abstract description 18
- 229910052736 halogen Inorganic materials 0.000 title claims abstract description 16
- 150000002367 halogens Chemical class 0.000 title claims abstract description 16
- 239000013078 crystal Substances 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 19
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 14
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 12
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 10
- 239000012043 crude product Substances 0.000 claims abstract description 9
- 239000000047 product Substances 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 239000001103 potassium chloride Substances 0.000 claims abstract description 6
- 235000011164 potassium chloride Nutrition 0.000 claims abstract description 6
- 239000000706 filtrate Substances 0.000 claims description 6
- 238000005119 centrifugation Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000036632 reaction speed Effects 0.000 abstract description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011777 magnesium Substances 0.000 abstract description 2
- 229910052749 magnesium Inorganic materials 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- IRPDISVJRAYFBI-UHFFFAOYSA-N nitric acid;potassium Chemical compound [K].O[N+]([O-])=O IRPDISVJRAYFBI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D9/00—Nitrates of sodium, potassium or alkali metals in general
- C01D9/04—Preparation with liquid nitric acid
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D9/00—Nitrates of sodium, potassium or alkali metals in general
- C01D9/16—Purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D9/00—Nitrates of sodium, potassium or alkali metals in general
- C01D9/18—Preparation in the form of shaped products, e.g. granules
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A kind of technique of adding halogen method production rice-shaped crystallization potassium nitrate, by being reacted using nitric acid, magnesia, potassium chloride as raw material, crystallisation by cooling obtains potassium nitrate crude product, pass through adding halogen method again, the pyrosol of potassium nitrate and cryogenic fluid are mixed in a certain ratio, potassium nitrate crystal seed is added in simultaneously, controls mixeding liquid temperature and mixing speed, and crystallization obtains the production technology of the potassium nitrate crystals of rice-shaped.The production technology heats reaction solution using the heat that nitric acid and oxidation reactive magnesium generate, and reaction speed is fast, and energy saving；Crystallisation by cooling is carried out by the way of converting halogen and adding crystal seed, crystallization rate is fast, efficient, and gained potassium nitrate product is a kind of rice-shaped crystal of ellipse, purity is high, and impurity is few, and crystal particle diameter is larger and epigranular, good fluidity, it is prevented from caking, it is easy to use, it is widely used.
Description
Technical field
Present invention relates particularly to chemical products production technical fields, and in particular to a kind of adding halogen method production rice-shaped crystallization nitre
The technique of sour potassium.
Background technology
In existing process for producing potassium nitrate, mostly using direct water-cooling or it is air-cooled by the way of crystallisation by cooling, gained potassium nitrate
Crystal is thinner, mostly powdered, easily lumps, inconvenient to use.Convention resolution method is addition anticaking agent, but affects production
Product purity limits the purposes of product.
The content of the invention
In order to solve the deficiencies in the prior art, a kind of adding halogen method production rice-shaped that provides of the invention crystallizes potassium nitrate
Technique.
The technical solution that the present invention uses is：A kind of technique of adding halogen method production rice-shaped crystallization potassium nitrate, including
Following steps：
（1）Nitric acid, magnesia and potassium chloride are pressed into mass fraction 5：1：3 ratio, input retort are reacted, reacted
Insoluble matter impurity is filtered to remove after complete；
（2）The filtrate crystallisation by cooling that will be obtained centrifuges, obtains potassium nitrate crude product；
（3）Gained potassium nitrate crude product is added into water, is dissolved by heating, filtering obtains the pyrosol of potassium nitrate；（4）By nitric acid
Potassium pyrosol is proportionally added into potassium nitrate cryogenic fluid after cooling in crystallizer, while adds in potassium nitrate crystal seed, is led to
The solution temperature in control cooling water inflow control crystallizer is crossed at 30~50 DEG C, stirring, crystallisation by cooling obtains the nitric acid of rice-shaped
Potassium crystal；
（5）It centrifuges, drying, obtains rice-shaped crystallization potassium nitrate product, centrifugation gained filtrate returns to step（4）Into
Row Xun Huan.
The step（4）The middle mass ratio by potassium nitrate pyrosol and potassium nitrate cryogenic fluid after cooling is 1:
1~3.
The step（4）Middle mixing speed is 30~60 turns per minute.
The beneficial effects of the invention are as follows：The present invention provides a kind of adding halogen method production rice-shaped crystallization potassium nitrate technique,
By being reacted using nitric acid, magnesia, potassium chloride as raw material, crystallisation by cooling obtains potassium nitrate crude product, then by adding halogen method, i.e.,
The pyrosol of potassium nitrate and cryogenic fluid are mixed in a certain ratio, while add in potassium nitrate crystal seed, controls mixeding liquid temperature
And mixing speed, crystallization obtain the production technology of the potassium nitrate crystals of rice-shaped.The production technology is anti-using nitric acid and magnesia
The heat that should be generated heats reaction solution, and reaction speed is fast, and energy saving；It is carried out by the way of converting halogen and adding crystal seed
Crystallisation by cooling, crystallization rate is fast, efficient, and gained potassium nitrate product is a kind of rice-shaped crystal of ellipse, and purity is high, impurity
Few, crystal particle diameter is larger and epigranular, and good fluidity is prevented from caking, easy to use, widely used.
Description of the drawings
Fig. 1 crystallizes potassium nitrate process flow chart for present invention production rice-shaped.
Specific embodiment
The present invention is further described in conjunction with Fig. 1,
High purity magnesium hydroxide preparation process
Comprise the following steps：
（1）Nitric acid, magnesia and potassium chloride are pressed into mass fraction 5：1：3 ratio, input retort are reacted, reacted
Insoluble matter impurity is filtered to remove after complete；
（2）The filtrate crystallisation by cooling that will be obtained centrifuges, obtains potassium nitrate crude product；
（3）Gained potassium nitrate crude product is added into water, is dissolved by heating, filtering obtains the pyrosol of potassium nitrate；（4）By nitric acid
Potassium pyrosol is 1 with potassium nitrate cryogenic fluid after cooling example in mass ratio:1~3 is added in crystallizer, while adds in nitre
Sour potassium crystal seed, by the way that cooling water inflow is controlled to control the solution temperature in crystallizer, at 30~50 DEG C, stirring, mixing speed is every point
30~60 turns of clock, crystallisation by cooling obtains the potassium nitrate crystals of rice-shaped；
（5）It centrifuges, drying, obtains rice-shaped crystallization potassium nitrate product, centrifugation gained filtrate returns to step（4）Into
Row Xun Huan.
For the present invention by being reacted using nitric acid, magnesia, potassium chloride as raw material, crystallisation by cooling obtains potassium nitrate crude product,
Again by adding halogen method, i.e., the pyrosol of potassium nitrate and cryogenic fluid are mixed in a certain ratio, while add in potassium nitrate crystal seed,
Mixeding liquid temperature and mixing speed are controlled, crystallization obtains the production technology of the potassium nitrate crystals of rice-shaped.The production technology utilizes
The heat that nitric acid and oxidation reactive magnesium generate heats reaction solution, and reaction speed is fast, and energy saving；Added using halogen is converted
The mode of crystal seed carries out crystallisation by cooling, and crystallization rate is fast, efficient, and gained potassium nitrate product is that a kind of rice-shaped of ellipse is brilliant
Body, purity are high, and impurity is few, and crystal particle diameter is larger and epigranular, and good fluidity is prevented from caking, easy to use, widely used.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of technique of adding halogen method production rice-shaped crystallization potassium nitrate, which is characterized in that comprise the following steps：
（1）Nitric acid, magnesia and potassium chloride are pressed into mass fraction 5：1：3 ratio, input retort is reacted, after having reacted
It is filtered to remove insoluble matter impurity；
（2）The filtrate crystallisation by cooling that will be obtained centrifuges, obtains potassium nitrate crude product；
（3）Gained potassium nitrate crude product is added into water, is dissolved by heating, filtering obtains the pyrosol of potassium nitrate；（4）By potassium nitrate height
Warm solution presses 1 with potassium nitrate cryogenic fluid after cooling:1~3 mass ratio is added in crystallizer, while adds in potassium nitrate crystalline substance
Kind, by the way that cooling water inflow is controlled to control the solution temperature in crystallizer at 30~50 DEG C, stirring, mixing speed for per minute 30~
60 turns, crystallisation by cooling obtains the potassium nitrate crystals of rice-shaped；
（5）It centrifuges, drying, obtains rice-shaped crystallization potassium nitrate product, centrifugation gained filtrate returns to step（4）It is followed
Ring.
2. the technique of a kind of adding halogen method production rice-shaped crystallization potassium nitrate according to claim 1, which is characterized in that described
The step of（4）The middle mass ratio by potassium nitrate pyrosol and potassium nitrate cryogenic fluid after cooling is 1:1~3.
3. the technique of a kind of adding halogen method production rice-shaped crystallization potassium nitrate according to claim 1, which is characterized in that described
The step of（4）Middle mixing speed is 30~60 turns per minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611058700.1A CN106629784B (en) | 2016-11-28 | 2016-11-28 | A kind of technique of adding halogen method production rice-shaped crystallization potassium nitrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611058700.1A CN106629784B (en) | 2016-11-28 | 2016-11-28 | A kind of technique of adding halogen method production rice-shaped crystallization potassium nitrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106629784A CN106629784A (en) | 2017-05-10 |
| CN106629784B true CN106629784B (en) | 2018-05-29 |
Family
ID=58812138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611058700.1A Active CN106629784B (en) | 2016-11-28 | 2016-11-28 | A kind of technique of adding halogen method production rice-shaped crystallization potassium nitrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106629784B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117634A (en) * | 2017-05-28 | 2017-09-01 | 赵家春 | A kind of Production of Potassium Nitrate method |
| CN110862101A (en) * | 2019-12-25 | 2020-03-06 | 安徽胜达化工科技有限公司 | Preparation method of potassium nitrate |
| CN112645360A (en) * | 2020-11-05 | 2021-04-13 | 浙江联大化工股份有限公司 | Potassium nitrate tablet and production equipment and production process thereof |
| CN112875728B (en) * | 2021-02-07 | 2021-11-05 | 武汉世吉药业有限公司 | Preparation method of high-purity potassium nitrate and high-purity potassium nitrate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3556913B2 (en) * | 2000-03-01 | 2004-08-25 | 株式会社ソニー・コンピュータエンタテインメント | PC card input / output control device |
-
2016
- 2016-11-28 CN CN201611058700.1A patent/CN106629784B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106629784A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106629784B (en) | A kind of technique of adding halogen method production rice-shaped crystallization potassium nitrate | |
| CN102174040A (en) | Preparation method of electronic grade triglycidyl isocyanurate | |
| CN104003443B (en) | A kind of method adding JZPD capsule ammonium meta-vanadate | |
| CN102602905A (en) | Method for producing monopotassium phosphate | |
| CN102329212A (en) | Refining method for long-chain binary acid | |
| CN103130235B (en) | Method for preparing boron-10 acid through boron trifluoride-10 one-step method | |
| CN107673946A (en) | The method that continuity method isomerization produces durol | |
| CN108440325A (en) | The synthetic method of D-VB5 calcium | |
| CN102126756B (en) | Method for producing industrial grade ammonium paramolybdate | |
| CN105366701B (en) | A kind of technique of continuous production cesium rubidium alum and potassium alum | |
| CN104262124A (en) | Production method of 2-tert-pentylanthraquinone | |
| CN104557721B (en) | A kind of method for producing 5,5 DMHs | |
| CN104150500B (en) | Method for preparing boron-10 acid with boron trifluoride-10 | |
| CN104557685A (en) | Method for producing nicotinic acid by using nicotinamide mother solution | |
| CN109608328A (en) | A kind of preparation method of calcium gluconate for injection | |
| CN103265072B (en) | A kind of basic zirconium chloride method for crystallising | |
| CN102910638A (en) | Preparation method of anhydrous lithium metaborate | |
| CN106622070A (en) | Method for continuously preparing melatonin by using microreactor | |
| CN103086900A (en) | Method of production of glycine by circulation environmental-friendly method in alcohol phase | |
| CN107649171A (en) | Continuity method isomerization produces the catalyst of durol | |
| CN103467272B (en) | Rapid energy-saving and emission-reduction production method for high purity large particle nickel acetate | |
| CN1321060C (en) | Preparation method for zinc borate | |
| CN117209389A (en) | A simple method for synthesizing glycine | |
| CN103754915A (en) | Preparation method of strontium carbonate | |
| CN103787895A (en) | Production process for synthesizing 4-bromo-2-methylaniline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |