CN1113886A - Producing method for potassium nitrate - Google Patents
Producing method for potassium nitrate Download PDFInfo
- Publication number
- CN1113886A CN1113886A CN 94110616 CN94110616A CN1113886A CN 1113886 A CN1113886 A CN 1113886A CN 94110616 CN94110616 CN 94110616 CN 94110616 A CN94110616 A CN 94110616A CN 1113886 A CN1113886 A CN 1113886A
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- China
- Prior art keywords
- saltpetre
- circulate soln
- production
- sodium
- chlor
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- 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.)
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- Fertilizers (AREA)
Abstract
The present invention uses the fertilizers of ammonium nitrate and potassium chloride as raw materials and adopts the intermediate salt method to produce potassium nitrate. Let the circulatory mother liquid containing sodium nitrate act to the potassium chloride to obtain solid sodium chloride and potassium nitrate mother liquid. After dropping in temp., the product of crystalline potassium nitrate is obtained. Said mother liquid is separated and the sodium chloride and ammonium nitrate are put in to obtain the by-products ammonium chloride and circulating mother liquid containing sodium nitrate. Said method features over 90% of high yield, relative low energy consumption and easy operation and management.
Description
The present invention is the production method of saltpetre, belongs to chemical production field.
Known ammonium nitrate, Repone K are the method for raw material preparing potassium nitrate by means of double decomposition, product yield is lower, only be about 65%, and need to consume the aqueous solution of a large amount of energy high temperature evaporation reaction product, corrode more serious, the objective of the invention is to adopt new method, with ammonium nitrate, Repone K is raw material production saltpetre, its product yield is 100%, and need not to consume a large amount of energy high temperature, evaporation has corrosive solution, reduces thereby make production technique greatly simplify production cost, and the working of an invention method is as follows:
1, preparation circulate soln:
Under-10～30 ℃, in the water of 1000 parts of weight, adding ammonium chloride makes and is saturated, the ammonium nitrate that adds 0～1500 part of weight, the SODIUMNITRATE that adds 300～1500 parts of weight, adding saltpetre makes and is saturated, and this solution that contains SODIUMNITRATE of-10～30 ℃ is the circulate soln that will prepare.
2, produce saltpetre with circulate soln:
The circulate soln of above-mentioned production preparation is warming up to 60～90 ℃, evaporates certain water gaging,, following reaction: NaNO takes place so that behind the molal quantity of the sedimentary molal quantity of NaCl that following reaction is produced greater than the kcl that adds, add the kcl of some amount
3+ KCL=KNO
3+ NaCl ↓ precipitation separation, mother liquor add suitable quantity of water, and its amount equals the water yield that evaporates in the above-mentioned production, and the temperature that cools to-10～30 ℃ preparation circulate soln deducts 0.5～5 ℃, separates out KNO
3Crystallization separates this crystallization, promptly gets the saltpetre product, separates mother liquor and is used for following production 3.
3, produce ammonium chloride with circulate soln:
With the separation mother liquor behind the above-mentioned production saltpetre, under-10～30 ℃ preparation circulate soln temperature, add ammonium nitrate, its molal quantity equals the molal quantity of 2 saltpetre of producing, and all adds the sodium-chlor precipitation that production 2 is produced, and following reaction takes place:
After reaction finishes, under preparation circulate soln temperature, separate NH
4The CL crystallization is byproduct, and the circulate soln circulation that the separation mother liquor becomes preparation again is used for 2,3 production, finishes the successive production process.
Saltpetre is efficient nitrogen-potassium compound fertilizer in agricultural, the happiness potassium that is widely used in the Peak output of a large amount of plantations is avoided the chlorine cash crop, as tobacco, orange, pineapple, tealeaves, horse bell administration etc., China does not have the production of chlorideless potassic fertilizer at present, a large amount of dependence on import vitriolate of tartar, year, import volume was more than 300,000 tons, use method of the present invention, efficient cheaply nitrogen-potassium compound fertilizer of mass production or technical grade saltpetre simply, meet the need of market, substituting import one is saved foreign exchange, but and mass production foreign exchange earning, have good economic benefit and social benefit.
Claims (4)
1, the production method of saltpetre is characterized in that: at first be mixed with the circulate soln that contains SODIUMNITRATE under the certain temperature; After this circulate soln evaporated certain water gaging, produce sodium-chlor with the Repone K effect at a certain temperature; Be cooled under the certain temperature behind the water of the circulate soln adding amount of evaporating behind the separation sodium-chlor and produce saltpetre, having produced circulate soln behind the saltpetre adds in an amount of ammonium nitrate and the production process behind the isolating sodium-chlor at a certain temperature, reaction is produced ammonium chloride as byproduct, the circulate soln that mother liquor behind the separating ammonium chloride becomes preparation again is used for cyclic production, finishes production process so continuously.
2, according to the production method of the described saltpetre of claim 1, it is characterized in that: circulate soln is made into following method:
Under-10～30 ℃, in the water of 1000 parts of weight, adding ammonium chloride makes and is saturated, adds the ammonium nitrate of 0～1500 part of weight, adds 300～1500 parts of weight nitric acid sodium, and gained solution adding saltpetre makes and is saturated.
3, according to the production method of the described saltpetre of claim 1, it is characterized in that:
The circulate soln of producing preparation is warming up to 60～90 ℃, evaporates certain water gaging, make the molal quantity of the sedimentary molal quantity of sodium-chlor of production in next step production greater than the Repone K that adds.Add Repone K behind circulate soln, keep 60～90 ℃, reacted 30～60 minutes, after separating the sodium-chlor that generates, separate mother liquor and add suitable quantity of water, after the water yield that its amount equals to evaporate in the above-mentioned production, the temperature that is cooled to the preparation circulate soln deducts 0.5～5 ℃, and saltpetre is produced in crystallization.
4, according to the production method of the described saltpetre of claim 1, it is characterized in that:
The circulate soln that separates saltpetre under-10～30 ℃ preparation circulate soln temperature, is added ammonium nitrate, and adds the sodium-chlor precipitation of producing in the production process, and ammonium chloride is produced in reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94110616 CN1113886A (en) | 1994-06-01 | 1994-06-01 | Producing method for potassium nitrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94110616 CN1113886A (en) | 1994-06-01 | 1994-06-01 | Producing method for potassium nitrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1113886A true CN1113886A (en) | 1995-12-27 |
Family
ID=5034564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94110616 Pending CN1113886A (en) | 1994-06-01 | 1994-06-01 | Producing method for potassium nitrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1113886A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374372C (en) * | 2005-08-31 | 2008-03-12 | 东华工程科技股份有限公司 | Process for preparing potassium nitrate by double decomposition method |
| CN101544386B (en) * | 2009-04-29 | 2011-01-05 | 余荣华 | Method for producing potassium nitrate together with ammonium chloride and ammonium nitrate |
| CN104261435A (en) * | 2014-10-10 | 2015-01-07 | 山东诺贝丰化学有限公司 | Potassium nitrate crystallization system and process through double-decomposition method |
| CN107601532A (en) * | 2017-10-25 | 2018-01-19 | 安徽胜达化工科技有限公司 | A kind of method of coproduction technical grade potassium nitrate and complex fertilizer |
-
1994
- 1994-06-01 CN CN 94110616 patent/CN1113886A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374372C (en) * | 2005-08-31 | 2008-03-12 | 东华工程科技股份有限公司 | Process for preparing potassium nitrate by double decomposition method |
| CN101544386B (en) * | 2009-04-29 | 2011-01-05 | 余荣华 | Method for producing potassium nitrate together with ammonium chloride and ammonium nitrate |
| CN104261435A (en) * | 2014-10-10 | 2015-01-07 | 山东诺贝丰化学有限公司 | Potassium nitrate crystallization system and process through double-decomposition method |
| CN104261435B (en) * | 2014-10-10 | 2015-12-02 | 诺贝丰（中国）化学有限公司 | A kind of double decomposition potassium nitrate crystal system and crystallization processes |
| CN107601532A (en) * | 2017-10-25 | 2018-01-19 | 安徽胜达化工科技有限公司 | A kind of method of coproduction technical grade potassium nitrate and complex fertilizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |