CN1152549A - Technology for preparing potassium sulfate by two-stage method - Google Patents
Technology for preparing potassium sulfate by two-stage method Download PDFInfo
- Publication number
- CN1152549A CN1152549A CN 96117788 CN96117788A CN1152549A CN 1152549 A CN1152549 A CN 1152549A CN 96117788 CN96117788 CN 96117788 CN 96117788 A CN96117788 A CN 96117788A CN 1152549 A CN1152549 A CN 1152549A
- Authority
- CN
- China
- Prior art keywords
- technology
- potassium sulfate
- reaction
- stage method
- product
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention provides a two-step process for preparing potassium sulfate. First step, the potassium chloride is placed in a reactor, then the sulfuric acid is slowly added, and stirred, reacted, and the produced additional product hydrogen chloride gas is extracted, absorbed by using circulating water and made into hydrochloric acid; and second step, the intermediate product which is produced from first step reaction and takes potassium hydrogen sulfate as main component is placed in a high-temp. furnace with a bladder-like inner container and indirectly heated, reacted, its reaction temp. is 340-600 deg.C, and its additional product hydrogen chloride gas is extracted, absorbed by circulating water and made into hydrochloric acid, then the obtained reaction product is processed by cooling and breaking so as to obtain the invented product potassium sulfate.
Description
The present invention relates to the production technique of vitriolate of tartar, particularly relate to a kind of technology of preparing potassium sulfate by two-stage method.
Utilize Repone K and sulfuric acid to prepare the method for vitriolate of tartar in the prior art, generally adopt Mannheim proeess to carry out suitability for industrialized production, this method is in reaction process, owing to mix and stir, heat factor affecting such as inhomogeneous, can make reaction not exclusively, product does not often thoroughly form parcel because of transforming in the middle of it, generation accounts for the high sulfuric chlorohydrin potassium (chloride ion-containing 2.5～15%) of product more than 40%, this part high sulfuric chlorohydrin potassium needs to enter in the Reaktionsofen as returning charge once more with raw material, again react, thereby reduced separate unit throughput, and the facility investment expense is big.Aspect in addition, the combustion product gases of heating usefulness directly feeds the heating of stove internal combustion, and the hydrogen chloride gas that reaction is produced is with fume emission, can not reclaim, serious environment pollution is even water absorbs, absorption liquid also is heteroacid (sulfur acid, carbonic acid and a volume of smoke), not convenient usefulness.Chinese patent CN1118335 discloses a kind of Mannheim proeess and has made the vitriolic non-recovery process, and main reaction is still carried out at mannheim furnace, increases a reactor processing returning charge newly, and returning charge is promptly arranged, and does not continue reaction in the stove but do not return, and carries out in newly-increased reactor.
The object of the present invention is to provide a kind of is raw material with Repone K and sulfuric acid, carries out normal-temperature reaction earlier in corrosion-resistant reactor, carries out the technology of the preparing potassium sulfate by two-stage method of reacting by heating again in High Temperature Furnaces Heating Apparatus.
The technology of preparing potassium sulfate by two-stage method of the present invention is performed such, the first step is that Repone K is added in the reactor, stir, slowly adding sulfuric acid reacts, Repone K cooperates part by weight with vitriolic 1: 0.67～0.70, and reaction is advisable with rotary reactor, and the reaction times is 90～130 minutes, the accessory substance hydrogen chloride gas that produces is drawn, and is absorbed as hydrochloric acid with recirculated water; Second step was that the intermediate product of the first step reaction is put into courage formula High Temperature Furnaces Heating Apparatus, and indirect heating is reacted, and intermediate product is mainly sal enixum, account for 70～80%, secondly, a spot of vitriolate of tartar and unreacted Repone K are arranged, temperature of reaction is 340～600 ℃, discharge in stack gas and accessory substance hydrogen chloride gas shunting, hydrogen chloride gas body and function recirculated water is absorbed as hydrochloric acid, and stack gas is outwards discharged, and reaction product is through cooling, fragmentation obtains the product vitriolate of tartar.The K2O content that reacts in the raw materials used Repone K is not less than 55%, is advisable with 55～60%, and vitriolic concentration is 96～98% (weight).
The advantage of the technology of preparing potassium sulfate by two-stage method of the present invention is that technology is simple, easy to operate, it is serious to have solved the stove internal corrosion that exists during vitriolate of tartar is produced, intermediate product needs secondary reaction in returning stove, and the gas that reaction produces is difficult to separately, problems such as serious environment pollution have improved economic benefit, compare with Mannheim proeess and save investment 70%.
Describe the embodiment of the invention below in detail
Embodiment 1; 450 kilograms of Repone K (K2O content 60%) are added in the reactor, stir, then 315 kilograms of sulfuric acid (98%) through metering slowly being added reactor reacts, reaction times is 100 minutes, accessory substance hydrogenchloride is drawn the back and is absorbed with recirculated water, make hydrochloric acid, intermediate product is put into courage formula High Temperature Furnaces Heating Apparatus, react under 400 ± 50 temperature, in 120 minutes reaction times, accessory substance hydrogenchloride is drawn the back and is absorbed with recirculated water, make hydrochloric acid, products therefrom promptly gets the product vitriolate of tartar after cooling off fragmentation, its skill quality index is as shown in table 1.
Embodiment 2: 600 kilograms of Repone K (K2O content 55%) are added in the reactor, stir, then 405 kilograms of sulfuric acid (96%) after metering slowly being added anti-device reacts, 120 minutes reaction times, the accessory substance hydrogen chloride gas is drawn the back and is made hydrochloric acid with the recirculated water absorption, intermediate product is put into courage formula temperature stove, under 500 ± 50 temperature, react, 100 minutes reaction times, accessory substance hydrogenchloride is drawn the back and is absorbed with following water, makes hydrochloric acid, and products therefrom is after cooling off fragmentation, promptly get the product vitriolate of tartar, its skill quality index is as shown in table 1.
Table 1: potassium sulfate for agricultural use technical indicator:
| National standard ZBG21006-89 | Embodiment 1 | Embodiment 2 | |
| Potassium oxide (K2O) % | Excellent first-class 〉=50 〉=45 | ????51.20 | ????48.80 |
| Cl content (%) | ≤1.5???≤2.5 | ????0.89 | ????1.2 |
| Moisture content (%) | ≤1.0???≤3 | ????0.12 | ????1.4 |
| Free acid (with sulphur acid meter) (%) | ≤0.5???≤3 | ????0.48 | ????0.46 |
Claims (4)
1, a kind of technology of preparing potassium sulfate by two-stage method is characterized in that this technology the first step is that Repone K is added in the reactor, stirs, and slowly adds sulfuric acid and reacts, and the accessory substance hydrogen chloride gas of generation is drawn, and is absorbed as hydrochloric acid with recirculated water; Second step was to be the intermediate product of main component with the sal enixum with the first step reaction, put into courage formula High Temperature Furnaces Heating Apparatus, indirect heating is reacted, temperature of reaction is 340～600 ℃, the accessory substance hydrogen chloride gas is drawn, and is absorbed as hydrochloric acid with recirculated water, and reaction product is through cooling, fragmentation obtains the product vitriolate of tartar.
2, the technology of preparing potassium sulfate by two-stage method as claimed in claim 1 is characterized in that reactant Repone K cooperates weight ratio with vitriolic be 1: 0.67～0.7.
3, the technology of preparing potassium sulfate by two-stage method as claimed in claim 1 is characterized in that K2O content at least 55% in the Repone K.
4, the technology of preparing potassium sulfate by two-stage method as claimed in claim 1 is characterized in that sulfuric acid concentration is 96～98% (weight).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117788 CN1152549A (en) | 1996-11-21 | 1996-11-21 | Technology for preparing potassium sulfate by two-stage method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117788 CN1152549A (en) | 1996-11-21 | 1996-11-21 | Technology for preparing potassium sulfate by two-stage method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1152549A true CN1152549A (en) | 1997-06-25 |
Family
ID=5124608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96117788 Pending CN1152549A (en) | 1996-11-21 | 1996-11-21 | Technology for preparing potassium sulfate by two-stage method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1152549A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067657C (en) * | 1998-07-17 | 2001-06-27 | 金作美 | Method for prodn. of potassium sulfate by circulating potassium hydrogen sulfate and decomposing potassium chloride |
| USRE46387E1 (en) | 1998-09-11 | 2017-05-02 | Genesys Telecommunications Laboratories, Inc. | Method and apparatus for extended management of state and interaction of a remote knowledge worker from a contact center |
| CN108602673A (en) * | 2016-04-04 | 2018-09-28 | 矿产化工公司和欧洲化学公司联合股份公司 | The device of Joint Production for phosphate and potassium sulfate |
| CN112158862A (en) * | 2020-05-15 | 2021-01-01 | 青岛碱业钾肥科技有限公司 | Production method of low-chlorine potassium sulfate |
-
1996
- 1996-11-21 CN CN 96117788 patent/CN1152549A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067657C (en) * | 1998-07-17 | 2001-06-27 | 金作美 | Method for prodn. of potassium sulfate by circulating potassium hydrogen sulfate and decomposing potassium chloride |
| USRE46387E1 (en) | 1998-09-11 | 2017-05-02 | Genesys Telecommunications Laboratories, Inc. | Method and apparatus for extended management of state and interaction of a remote knowledge worker from a contact center |
| CN108602673A (en) * | 2016-04-04 | 2018-09-28 | 矿产化工公司和欧洲化学公司联合股份公司 | The device of Joint Production for phosphate and potassium sulfate |
| CN108602673B (en) * | 2016-04-04 | 2022-12-09 | 矿产化工公司和欧洲化学公司联合股份公司 | Device for the joint production of phosphate and potassium sulphate |
| CN112158862A (en) * | 2020-05-15 | 2021-01-01 | 青岛碱业钾肥科技有限公司 | Production method of low-chlorine potassium sulfate |
| CN112158862B (en) * | 2020-05-15 | 2021-06-29 | 青岛碱业钾肥科技有限公司 | Production method of low-chlorine potassium sulfate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101327928A (en) | Calcium carbide production method | |
| CN112453009B (en) | Method for green harmless resource utilization of aluminum ash | |
| CN109277398A (en) | A kind of method of safe and harmlessization processing aluminium ash | |
| CN1035334C (en) | Continuous producting of iron-carbon alloy using iron carbide | |
| EP0042829B1 (en) | A method of manufacturing sulphuric acid | |
| CN1152549A (en) | Technology for preparing potassium sulfate by two-stage method | |
| US4331449A (en) | Process of producing town gas from methanol | |
| CN106119522B (en) | The extracting method of Rare Earth Mine | |
| CN111644127A (en) | Production system and production process for preparing nitrohumic acid through oxidative degradation | |
| CN104178645B (en) | The method preparing lithium metal | |
| CN114853646A (en) | Method for synthesizing dimethyl dithiodipropionate based on continuous vulcanization reaction | |
| CN107475303B (en) | Safe and environment-friendly biogas preparation method | |
| CN1058247C (en) | Method for preparing sulphuric acid by baking sulphur in fluidized-bed furnace | |
| CN106119525B (en) | The extraction element and extracting method of Rare Earth Mine | |
| US2715057A (en) | Catalyzed reaction between metallic hydrides and boric oxide | |
| CN107419048A (en) | It is a kind of to use nuclear reaction system to produce the system and method for sponge iron technique heat supply | |
| CN218359196U (en) | Serialization device of ammonium sulfate is prepared to by-product dilute sulfuric acid | |
| CN1456507A (en) | Method for producing cryolite | |
| CN1064851A (en) | A kind of production method of Strontium carbonate powder | |
| KR890003670B1 (en) | Process for manufacture of hydro-fluoric acid by reaction of sulphuric acid with fluorospar in rotating oven | |
| CN216137189U (en) | Preparation facilities of copper nitrate | |
| CN1107727C (en) | Technology of two-stage reduction method producing sponge iron | |
| CN115974082B (en) | Retrieve yellow phosphorus tail gas preparation carbide's device | |
| US3330864A (en) | Method for making urea nitrate | |
| CN218834098U (en) | Carbon dioxide removing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |