CN1115749A - Prodn process of ternary compound fertilizer with KCl - Google Patents
Prodn process of ternary compound fertilizer with KCl Download PDFInfo
- Publication number
- CN1115749A CN1115749A CN 94111088 CN94111088A CN1115749A CN 1115749 A CN1115749 A CN 1115749A CN 94111088 CN94111088 CN 94111088 CN 94111088 A CN94111088 A CN 94111088A CN 1115749 A CN1115749 A CN 1115749A
- Authority
- CN
- China
- Prior art keywords
- potassium
- neutralization
- whitewashing
- phosphorus
- repone
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G1/00—Mixtures of fertilisers belonging individually to different subclasses of C05
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- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The present invention relates to prodn process of inorganic fertilizer. In the said process, the end temp. for the reaction of KCl with H2SO4 to produce KHSO4 is controlled greater than 120 deg.C without water for dissolution being added. After the neutralization of mixed sulphuric acid and phosphoric acid with ammonia and mixing with urea, the product is spray-dried to produce ternary compound fertilizer containg N, P2O5 and K2O in 15% each. The said three-stage process has no evaporation and concentration and is short and simple.
Description
A kind of method with Repone K production Nitrogen, Phosphorus and Potassium.Belong to and mix mineral manure.
Not chloride nitrogen, phosphorus potassium Nitrogen, Phosphorus and Potassium are made component with vitriolate of tartar.Because potassium sulfate price height, at present domesticly tend to adopt potassium chloride to be converted into the potassium sulfate production NPK.Be converted into vitriolate of tartar by Repone K, there is the process of individual sal enixum the centre.Because potassium acid sulfate has different existences under different temperature, therefore producing the technology of NPK, each is variant.Publication number CN1078226A is first extracting sulfuric acid hydrogen potassium, and again moisturizing dissolving adds phosphoric acid, logical ammonia neutralization; Solution adds the mixed slurry of urea again after concentrating, whitewashing is dry, output finished product NPK.This four sections method flow processs are because water causes long flow path, the working expense height as having evaporating concentration process in solvent adding, the technical process.Publication number CN1071408A is that the nitration mixture with sulfuric acid or sulfuric acid and phosphoric acid reacts with Repone K under 70～120 ℃ condition, logical ammonia is neutralized to PH=6.5～7, and this method can directly obtain Nitrogen, Phosphorus and Potassium, and flow process is short, technology is simple, but owing to do not add urea, the finished product nitrogen content is low.
The purpose of this invention is to provide a kind of N of containing, P
2O
5, K
2The simple process of each 15% NPK of O.With four sections method ratios, technology does not have evaporating concentration process, can claim three-stage process.
Solution of the present invention is according to sal enixum existence difference under differing temps, and the outlet temperature of control sal enixum reactive tank makes sal enixum be in flowability state preferably greater than 120 ℃.Allocate phosphoric acid into then in the mixed stock tank of neutralization, urea is added in logical ammonia neutralization.Mixed slurry is dry by whitewashing, is to contain N, P
2O
5, K
2Each NPK finished product of 15% of O, whole technical process claims three-stage process, is finished by three capital equipments, i.e. potassium acid sulfate preparation feedback groove.Neutralization mixes stock tank, the whitewashing moisture eliminator.It is batch operation that reactive tank, neutralization mix stock tank, and whitewashing is dry for working continuously.
The present invention so has removed evaporating concentration process from because sal enixum has good mobility under greater than 120 ℃ condition, need not the moisturizing dissolving in the technical process.Because recruited urea before the whitewashing drying, product can satisfy NPK and contain N, P
2O
5, K
2O each 15%.
Accompanying drawing 1 is an equipment flowsheet of the present invention.
Potassium acid sulfate preparation feedback groove I, the mixed stock tank II of neutralization, low level whitewashing groove III Connect successively with pipeline, III delivers to spray by vertical pump with slip by low level whitewashing groove Slurry drier IV.
Embodiment one: owing to contain the impurity fluorine in the raw phosphoric acid, when reactive tank liner during for the lining of anti-the fluorine not, reactor only is used as to prepare potassium acid sulfate, and the operation of the mixed slurry of the neutralization of phosphoric acid, ammonia, urea and potassium acid sulfate mixes stock tank by neutralizing and finishes.Because reactive tank, the mixed stock tank of neutralization are batch operation, whitewashing is dry for working continuously, and is continuous for guaranteeing whole flow process, each two at least of reactive tank, the mixed stock tanks of neutralization, and a low level whitewashing groove with vertical pump that volume is bigger is arranged after the mixed stock tank of neutralization.
Embodiment two: when the reactive tank liner is the lining of anti-the fluorine, can cancel the mixed stock tank of neutralization, reach after the terminal point when potassium acid sulfate reacts in reactive tank, add phosphoric acid, ammonia, urea.Mixed slurry is sent to whitewashing drying, reactive tank batch operation by low level whitewashing groove again, and is continuous for guaranteeing flow process, at least two of reactive tanks.
Claims (4)
1, a kind of method with the KCl production NPK, genus mix inorganic fertilizer, contain N, P with KCl production
2O
5, K
2O each 15%, not chloride NPK at first will change into potassium acid sulfate with potassium chloride in reactive tank; Allocate phosphoric acid into after the potassium acid sulfate moisturizing is heavily molten, the ammonia neutralization; Solution is allocated the whitewashing of urea mixed slurry into after concentrating dry, be four sections methods, after it is characterized in that potassium chloride is converted into potassium acid sulfate, it is heavy molten that final temperature need not moisturizing greater than 120 ℃ of potassium acid sulfates, there is not evaporating concentration process in the flow process, be three-stage process, whole technical process is finished by three capital equipments, i.e. potassium acid sulfate preparation feedback groove, the mixed stock tank of neutralization, whitewashing drier.
2, a kind of method with Repone K production Nitrogen, Phosphorus and Potassium according to claim 1 is characterized in that it is batch operation that sal enixum preparation feedback groove, neutralization mix stock tank, and whitewashing is dry for working continuously.
3, the method for a kind of Repone K production Nitrogen, Phosphorus and Potassium according to claim 1 is characterized in that sal enixum preparation feedback groove, and neutralization mixes each two at least of stock tanks.
4, according to claim 1 or 2 or 3 described a kind of methods with Repone K production Nitrogen, Phosphorus and Potassium, it is characterized in that sal enixum preparation feedback groove, when adopting the lining of anti-the fluorine, neutralization mixes stock tank and can cancel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111088 CN1115749A (en) | 1994-07-26 | 1994-07-26 | Prodn process of ternary compound fertilizer with KCl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111088 CN1115749A (en) | 1994-07-26 | 1994-07-26 | Prodn process of ternary compound fertilizer with KCl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1115749A true CN1115749A (en) | 1996-01-31 |
Family
ID=5034993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94111088 Pending CN1115749A (en) | 1994-07-26 | 1994-07-26 | Prodn process of ternary compound fertilizer with KCl |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1115749A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045947C (en) * | 1997-03-26 | 1999-10-27 | 山东红日化工股份有限公司 | Method for preparing sulfonyl azophoska compound fertilizer |
| CN1088446C (en) * | 1998-09-25 | 2002-07-31 | 苍安芝 | Prodn. tech. of disposable multi-element compound fertilizer |
| CN1089739C (en) * | 1997-06-19 | 2002-08-28 | 川化集团有限责任公司 | Process for preparing partial acidated ground phosphate rock compound fertilizer and technique thereof |
| CN102351588A (en) * | 2011-07-05 | 2012-02-15 | 山东聊城鲁西化工第五化肥有限公司 | Production method of novel chemically synthesized ammoniated sulfur-base composite fertilizer |
| WO2020097359A1 (en) * | 2018-11-07 | 2020-05-14 | Compass Minerals Usa Inc. | Process of converting potassium sulfate to potassium hydrogen sulfate |
-
1994
- 1994-07-26 CN CN 94111088 patent/CN1115749A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045947C (en) * | 1997-03-26 | 1999-10-27 | 山东红日化工股份有限公司 | Method for preparing sulfonyl azophoska compound fertilizer |
| CN1089739C (en) * | 1997-06-19 | 2002-08-28 | 川化集团有限责任公司 | Process for preparing partial acidated ground phosphate rock compound fertilizer and technique thereof |
| CN1088446C (en) * | 1998-09-25 | 2002-07-31 | 苍安芝 | Prodn. tech. of disposable multi-element compound fertilizer |
| CN102351588A (en) * | 2011-07-05 | 2012-02-15 | 山东聊城鲁西化工第五化肥有限公司 | Production method of novel chemically synthesized ammoniated sulfur-base composite fertilizer |
| CN102351588B (en) * | 2011-07-05 | 2013-11-06 | 山东聊城鲁西化工第五化肥有限公司 | Production method of novel chemically synthesized ammoniated sulfur-base composite fertilizer |
| WO2020097359A1 (en) * | 2018-11-07 | 2020-05-14 | Compass Minerals Usa Inc. | Process of converting potassium sulfate to potassium hydrogen sulfate |
| US10981839B2 (en) | 2018-11-07 | 2021-04-20 | Compass Minerals Usa Inc. | Process of converting potassium sulfate to potassium hydrogen sulfate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |