CN205313111U - System for with lime nitrogen manufacture order cyandiamide and aragonite type nano calcium carbonate - Google Patents
System for with lime nitrogen manufacture order cyandiamide and aragonite type nano calcium carbonate Download PDFInfo
- Publication number
- CN205313111U CN205313111U CN201521008456.9U CN201521008456U CN205313111U CN 205313111 U CN205313111 U CN 205313111U CN 201521008456 U CN201521008456 U CN 201521008456U CN 205313111 U CN205313111 U CN 205313111U
- Authority
- CN
- China
- Prior art keywords
- calcium carbonate
- reactor
- lime nitrogen
- filter
- type nano
- 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.)
- Expired - Fee Related
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 68
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 45
- MYFXBBAEXORJNB-UHFFFAOYSA-N calcium cyanamide Chemical compound [Ca+2].[N-]=C=[N-] MYFXBBAEXORJNB-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title abstract description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 230000008676 import Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 9
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 8
- 239000013078 crystal Substances 0.000 claims abstract description 8
- 238000003860 storage Methods 0.000 claims abstract description 6
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 claims description 37
- 238000000354 decomposition reaction Methods 0.000 claims description 13
- 230000003301 hydrolyzing effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 11
- 230000007062 hydrolysis Effects 0.000 abstract description 7
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000292 calcium oxide Substances 0.000 abstract description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 7
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 239000000706 filtrate Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- ZRALSGWEFCBTJO-UHFFFAOYSA-N anhydrous guanidine Natural products NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 2
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- MVXMNHYVCLMLDD-UHFFFAOYSA-N 4-methoxynaphthalene-1-carbaldehyde Chemical compound C1=CC=C2C(OC)=CC=C(C=O)C2=C1 MVXMNHYVCLMLDD-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- BNWPUUZJGBXAFM-UHFFFAOYSA-N azane oxalonitrile Chemical compound N.N#CC#N BNWPUUZJGBXAFM-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- -1 cyanogen amine Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000002837 defoliant Substances 0.000 description 1
- MJFQUUWPZOGYQT-UHFFFAOYSA-O diaminomethylideneazanium;nitrate Chemical compound NC(N)=[NH2+].[O-][N+]([O-])=O MJFQUUWPZOGYQT-UHFFFAOYSA-O 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 238000006471 dimerization reaction Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- JMANVNJQNLATNU-UHFFFAOYSA-N glycolonitrile Natural products N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000012567 medical material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The utility model discloses a system for with lime nitrogen manufacture order cyandiamide and aragonite type nano calcium carbonate, this system include the reactor, and the export of reactor is passed through the pipeline and is connected with second filter and single cyandiamide solution storage tank in proper order, and the import of reactor is connected with first filter and hydrolysis tank in proper order, and last lime nitrogen import and the water inlet of being provided with of hydrolysis tank is provided with the waste residue export on the first filter, being provided with carbon dioxide air inlet, crystal formation regulation and control agent entry on the reactor, being provided with the export of aragonite type nano calcium carbonate on the second filter, the second filter passes through the pipeline and is connected with hydrolysis tank. The utility model discloses a method can also obtain aragonite type nano calcium carbonate with lime nitrogen manufacture order cyandiamide the time, the solid of having avoided will containing calcium carbonate in original production process had both reduced the pollution to the environment as the waste residue emission, had increased the productivity effect again, and aragonite type nano calcium carbonate who produces and the aragonite calcium carbonate quality of using the calcium oxide as the production of material match.
Description
Technical field
The utility model relates to the system producing cyanamide and aragonitic nano-calcium carbonate with lime nitrogen.
Background technology
Cyanamide is widely used in agricultural chemicals and medical material industry as industrial raw material, is used as epoxy curing agent, dye fixing agent, flocculation agent etc. Crystal cyanamide is mainly used in medicine, healthcare product, the synthesis of fodder additives and the synthesis of pesticide intermediate, and the cyanamide aqueous solution can make the defoliant of fruit fruit tree, nontoxic insecticide. Cyanamide is also the intermediate product in synthesis Dyhard RU 100 technique. Dyhard RU 100, has another name called cyanamid dimerization, abbreviation DICY or DCD, chemical formula C2H4N4. White crystalline powder, is the dimer of cyanogen amine, is also the cyano derivative of guanidine, and in water, solubleness is 4.13g/100g (298.15K). Dyhard RU 100 is typically used as the raw materials for production of trimeric cyanamide and medical and dyestuff intermediate, is a kind of extremely important fine chemical material. In medicine industry, for producing Guanidinium nitrate and sulfa drugs etc. Also can be used for producing guanidine, thiocarbamide, nitrocellulose stablizer, steel surface stiffening agent, vulcanization of rubber promotor, printing and dyeing laking agent, leatheroid filler and tackiness agent etc. Existing production Dyhard RU 100 technology is the cyanogen ammonia hydrogen calcium suspension by preparing calcium cyanamide hydrolysis gained, removes calcium hydroxide filter residue through filtration under diminished pressure, then leads to into carbonic acid gas to precipitate out as calcium carbonate by calcium to filtrate, obtains cyanamide liquid. Make it be polymerized in the basic conditions, more after filtration, crystallisation by cooling, separation, drying, obtain Dyhard RU 100. Its equation is as follows:
2CaCN2+2H2O→Ca(HCN2)2+Ca(OH)2
Ca(HCN2)2+CO2+H2O→2NH2CN+CaCO3
2NH2CN→(NH2CN)2
Lime nitrogen hydrolysis decalcification can release a large amount of heat, owing to cyanamide is unstable, temperature is too high can be polymerized, easily form Dyhard RU 100, so, when temperature control is not good, what obtain is cyanamide and Dyhard RU 100 mixture, due in now mixed solution containing waste residue, therefore the Dyhard RU 100 of this step generation can only be got rid of with waste residue.Wherein waste residue is mainly the calcium carbonate waste that decalcification process produces. In view of this, a large amount of filter residues filtered out in prior art its utilize field limited, only can be used as cement raw material or soil improvement agent and use, not there is economic benefit. Chinese utility model patent (CN1100067) discloses the method producing light calcium carbonate, but novel of this practicality obtains ordinary calcium carbonate, and added value is too low. Coproduction carbon, ordinary calcium carbonate when Chinese utility model patent (CN100537421C) produces cyanamide and Dyhard RU 100 with lime nitrogen, added value is too low.
The current object to Dyhard RU 100 industrial waste residue disposal method is all for alleviating environmental pollution, but these methods all exist processing cost height, or made calcium carbonate quality is lower, causes existing Dyhard RU 100 manufacturer still to it can be used as waste to process.
Prior art there is no the method to the industrial residue high-efficiency comprehensive utilization produced in cyanamide production process.
Practical novel content
The purpose of this utility model is the problem that the aqueous solution of raw material production cyanamide produces to be difficult to process waste residue taking lime nitrogen in prior art to solve, it is provided that the system of cyanamide and aragonitic nano-calcium carbonate produced by a kind of lime nitrogen.
The technical solution of the utility model is summarized as follows:
The system of cyanamide and aragonitic nano-calcium carbonate is produced with lime nitrogen, comprise reactor 3, the outlet of reactor 3 is connected with tow filtrator 4 and cyanamide solution storage tank 5 successively by pipeline, the import of reactor 3 is connected with the first strainer 2 and hydrolytic decomposition pot 1 successively, hydrolytic decomposition pot is provided with lime nitrogen import and water import, the first strainer 2 is provided with waste residue outlet; Being provided with carbon dioxide mouth, crystal polymorph control agent entrance on reactor 3, tow filtrator 4 is provided with the outlet of aragonitic nano-calcium carbonate, tow filtrator 4 is connected with hydrolytic decomposition pot 1 by pipeline.
System of the present utility model can also obtain aragonitic nano-calcium carbonate when producing cyanamide with lime nitrogen, avoid in original production process and the solid containing calcium carbonate is used as waste sludge discharge, both the pollution to environment had been decreased, turn increase production benefit, the aragonitic nano-calcium carbonate produced be that the aragonite calcium carbonate quality of raw material production is suitable with calcium oxide.
Accompanying drawing explanation
Fig. 1 is the system schematic producing cyanamide and aragonitic nano-calcium carbonate with lime nitrogen.
Fig. 2 is aragonitic nano-calcium carbonate SEM photograph.
Fig. 3 is the XRD result of aragonitic nano-calcium carbonate.
Embodiment
Below in conjunction with specific embodiment and Figure of description, the utility model is further described. Embodiment of the present utility model is to enable those skilled in the art to understand better the utility model, but is not imposed any restrictions by the utility model.
The system (see Fig. 1) of cyanamide and aragonitic nano-calcium carbonate is produced with lime nitrogen, comprise reactor 3, the outlet of reactor 3 is connected with tow filtrator 4 and cyanamide solution storage tank 5 successively by pipeline, the import of reactor 3 is connected with the first strainer 2 and hydrolytic decomposition pot 1 successively, hydrolytic decomposition pot is provided with lime nitrogen import and water import, the first strainer 2 is provided with waste residue outlet; Being provided with carbon dioxide mouth, crystal polymorph control agent entrance on reactor 3, tow filtrator 4 is provided with the outlet of aragonitic nano-calcium carbonate, tow filtrator 4 is connected with hydrolytic decomposition pot 1 by pipeline.
Embodiment 1
The system that use lime nitrogen produces cyanamide and aragonitic nano-calcium carbonate produces cyanamide and the method for aragonitic nano-calcium carbonate continuously, comprises the steps:
1) above-mentioned lime nitrogen is used to produce the system of cyanamide and aragonitic nano-calcium carbonate;
2) leading in hydrolytic decomposition pot 1 with 10kg/h continuously by the water of the lime nitrogen of the nitrogen content 20wt% of pulverizing and 20L/h, the mixture after hydrolysis filters through the first strainer 2, and filter residue is discharged through waste residue outlet; Being delivered continuously in high-shear reactor 3 by filtrate, 65ml/h phosphoric acid (crystal polymorph control agent) and carbon dioxide, temperature of reaction is below 60 DEG C, and by the flow of regulation of carbon dioxide, the system pH of making reaches 9-10;
3) the resultant slurries discharged from high-shear reactor lead to and filter, into tow filtrator 4, the cyanamide aqueous solution that the filtrate that obtains is massfraction 19.64%, the cyanamide aqueous solution leads to into cyanamide solution storage tank (5), filter the aragonitic nano-calcium carbonate filter residue obtained to wash with water, water input hydrolytic decomposition pot 1 after washing recycles, aragonitic nano-calcium carbonate is discharged from the outlet of aragonitic nano-calcium carbonate and is collected, obtain aragonitic nano-calcium carbonate calcium product after dry, see Fig. 2 and Fig. 3.
Embodiment 2
Cyanamide and the system batch production cyanamide of aragonitic nano-calcium carbonate and the method for aragonitic nano-calcium carbonate are produced in use with lime nitrogen, comprise the steps:
1) above-mentioned lime nitrogen is used to produce the system of cyanamide and aragonitic nano-calcium carbonate;
2) lime nitrogen and the 30L water of the nitrogen content 20wt% pulverized by 15kg lead in hydrolytic decomposition pot, and the mixture after hydrolysis filters through the first strainer, and filter residue is discharged through waste residue outlet; Filtrate and 0.1L phosphoric acid (crystal polymorph control agent) are joined in high-shear reactor, carbon dioxide is being delivered continuously in high-shear reactor, temperature of reaction controls below 60 DEG C, by control carbon dioxide intake, makes system reach pH=9;
3) the resultant slurries discharged from high-shear reactor lead to and filter, into tow filtrator, the cyanamide aqueous solution that the filtrate that obtains is massfraction 24.67%, the cyanamide aqueous solution leads to into cyanamide solution storage tank, filter the aragonitic nano-calcium carbonate filter residue obtained to wash with water, water input hydrolytic decomposition pot after washing recycles, aragonitic nano-calcium carbonate is discharged from the outlet of aragonitic nano-calcium carbonate and is collected, and obtains aragonitic nano-calcium carbonate calcium product after dry.
When by step 2) pH=10, when other is with the present embodiment, it is also possible to prepare the satisfactory cyanamide aqueous solution and aragonitic nano-calcium carbonate.
Experiment proves, the phosphoric acid of the present embodiment is substituted respectively with polyacrylamide (PAM), cetyl trimethylammonium bromide (CTAB), magnesium sulfate or polyvinylpyrrolidone (PVP), as crystal polymorph control agent, other same the present embodiment, it is possible to obtain the result similar to the present embodiment.
Claims (1)
1. the system of cyanamide and aragonitic nano-calcium carbonate is produced with lime nitrogen, comprise reactor (3), it is characterized in that the outlet of reactor (3) is connected with tow filtrator (4) and cyanamide solution storage tank (5) successively by pipeline, the import of reactor (3) is connected with the first strainer (2) and hydrolytic decomposition pot (1) successively, hydrolytic decomposition pot is provided with lime nitrogen import and water import, the first strainer (2) is provided with waste residue outlet; Reactor (3) is provided with carbon dioxide mouth, crystal polymorph control agent entrance, being provided with the outlet of aragonitic nano-calcium carbonate on tow filtrator (4), tow filtrator (4) is connected with hydrolytic decomposition pot (1) by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521008456.9U CN205313111U (en) | 2015-12-07 | 2015-12-07 | System for with lime nitrogen manufacture order cyandiamide and aragonite type nano calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521008456.9U CN205313111U (en) | 2015-12-07 | 2015-12-07 | System for with lime nitrogen manufacture order cyandiamide and aragonite type nano calcium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205313111U true CN205313111U (en) | 2016-06-15 |
Family
ID=56314950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521008456.9U Expired - Fee Related CN205313111U (en) | 2015-12-07 | 2015-12-07 | System for with lime nitrogen manufacture order cyandiamide and aragonite type nano calcium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205313111U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347362A (en) * | 2015-12-07 | 2016-02-24 | 上海弗鲁克科技发展有限公司 | System and method for producing cyanamide and aragonite type nano calcium carbonate through lime nitrogen |
| CN108862321A (en) * | 2018-06-25 | 2018-11-23 | 山东益丰生化环保股份有限公司 | A kind of preparation method of high-quality cyanamide aqueous solution |
-
2015
- 2015-12-07 CN CN201521008456.9U patent/CN205313111U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347362A (en) * | 2015-12-07 | 2016-02-24 | 上海弗鲁克科技发展有限公司 | System and method for producing cyanamide and aragonite type nano calcium carbonate through lime nitrogen |
| CN108862321A (en) * | 2018-06-25 | 2018-11-23 | 山东益丰生化环保股份有限公司 | A kind of preparation method of high-quality cyanamide aqueous solution |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102267713B (en) | Method for producing high-quality light calcium carbonate by ammonium salt circulation process | |
| CN101993105B (en) | Method for preparing light calcium carbonate and co-producing ammonium sulfate from phosphogypsum | |
| CN102531001B (en) | Comprehensive soda ash producing process and product application thereof | |
| CN104445276B (en) | A kind of efficient method preparing cyanamide solution | |
| CN104003443B (en) | A kind of method adding JZPD capsule ammonium meta-vanadate | |
| CN103880690B (en) | A kind of environment friendly clean producing method of glycine | |
| KR101348524B1 (en) | Process for preparing ammonium metatungstate | |
| CN102602974A (en) | Method for producing less-barium fine strontium salts from celestite | |
| CN105294509A (en) | System and method for synthesizing dicyandiamide by one-step process | |
| CN104477961A (en) | Preparation method of high-purity fine calcium carbonate | |
| CN205313111U (en) | System for with lime nitrogen manufacture order cyandiamide and aragonite type nano calcium carbonate | |
| CN103232052B (en) | Method for preparing high-purity calcium carbonate directly from phosphogypsum | |
| CN102718235A (en) | Method for preparing magnesium carbonate trihydrate crystal whiskers by adopting basic magnesium carbonate tetrahydrate | |
| CN102424409A (en) | Method for preparing light magnesium carbonate | |
| CN102765740B (en) | Preparation method of strontium carbonate with high purity | |
| CN101224902B (en) | Method for duplex deposition of high-purity magnesium hydroxide by liquid ammonia-ammonia | |
| CN104261443A (en) | Process for calcium-method production of magnesium hydrate by using nanofiltration membrane | |
| CN103991893A (en) | Preparing method of high-purity basic cupric carbonate | |
| CN102167671A (en) | A kind of method that utilizes dicyandiamide waste residue to prepare dicyandiamide, industrial calcium sulfate and charcoal | |
| CN101602517B (en) | Polyaluminium chloride molten iron treating agent and preparation method thereof | |
| CN104817468B (en) | A kind of preparation method of glycine | |
| CN101585547A (en) | Method for preparing ammonium sulfate as fertilizer by phosphogypsum through ball milling | |
| CN205328904U (en) | System for synthetic dicyandiamide of one -step method | |
| CN105347362A (en) | System and method for producing cyanamide and aragonite type nano calcium carbonate through lime nitrogen | |
| CN103601630A (en) | Method utilizing calcium carbide slag and carbon monoxide to synthesize calcium formate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160615 Termination date: 20191207 |