SU670537A1 - Device for producing calcium cyanamide - Google Patents
Device for producing calcium cyanamideInfo
- Publication number
- SU670537A1 SU670537A1 SU742027728A SU2027728A SU670537A1 SU 670537 A1 SU670537 A1 SU 670537A1 SU 742027728 A SU742027728 A SU 742027728A SU 2027728 A SU2027728 A SU 2027728A SU 670537 A1 SU670537 A1 SU 670537A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- calcium cyanamide
- producing calcium
- cyanamide
- fittings
- calcium
- Prior art date
Links
- MVXMNHYVCLMLDD-UHFFFAOYSA-N 4-methoxynaphthalene-1-carbaldehyde Chemical compound C1=CC=C2C(OC)=CC=C(C=O)C2=C1 MVXMNHYVCLMLDD-UHFFFAOYSA-N 0.000 title claims description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 229910001369 Brass Inorganic materials 0.000 claims description 2
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 239000010951 brass Substances 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 239000012948 isocyanate Substances 0.000 claims description 2
- 150000002513 isocyanates Chemical class 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 6
- 239000004202 carbamide Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 2
- -1 calcium cyanurates Chemical class 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- JDRFUUBRGGDEIZ-UHFFFAOYSA-N 3,6-dichloro-2-methoxybenzoate;dimethylazanium Chemical compound CNC.COC1=C(Cl)C=CC(Cl)=C1C(O)=O JDRFUUBRGGDEIZ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
1one
Изобретение относитс к устройствам дл .нолучени цианамида кальци бескарбидным способом из мочевины и касаетс материала, из которого выполнено устройство .This invention relates to calcium cyanamide devices for producing a carbide-free method from urea and concerns the material from which the device is made.
Известно устройство дл получени цианамида кальци из мочевины, выполненное из кварца 1.A device for producing calcium cyanamide from urea, made of quartz 1, is known.
Наиболее близким по технической сущности и достигаемому результату к изобретению вл етс устройство дл получени цианамида кальци из мочевины, представл ющее собой корпус со штуцерами дл входа реагентов и вывода продуктов и устройством дл поддержани кип щего сло 2.The closest in technical essence and the achieved result to the invention is a device for obtaining calcium cyanamide from urea, which is a body with fittings for entering reagents and withdrawing products and a device for maintaining a fluidized bed 2.
Устройство выполнено из кварца в виде трубки диаметром 40 мм.The device is made of quartz in the form of a tube with a diameter of 40 mm.
Известное устройство невозможно изготовить из кварца дл промышленного использовани из-за хрупкости материала и сложности его обработки.The known device cannot be made of quartz for industrial use due to the fragility of the material and the complexity of its processing.
Использование в известном устройстве материалов, содержащих железо, также невозможно , так как железо катализирует побочные реакции разложени образующегос цианамида кальци . Присутствие железа снижает выход цианамида кальци , нриводит к по влению в продукте свободного углерода, что приводит к перерасходу мочевины. Выход цианамида уменьшаетс до 40% п ниже.The use of materials containing iron in the known device is also impossible, since iron catalyzes side reactions of decomposition of calcium cyanamide formed. The presence of iron reduces the yield of calcium cyanamide, leads to the appearance of free carbon in the product, which leads to an overuse of urea. The yield of cyanamide is reduced to 40% below.
Целью изобретени вл етс повышение коррозионной стойкости и производительности устройства.The aim of the invention is to increase the corrosion resistance and performance of the device.
Поставленна цель достигаетс тем, что в предлагаемом устройстве дл получени цианамида кальци , включающем корпус, штуцеры дл входа и выхода реагентов иThis goal is achieved by the fact that in the proposed device for producing calcium cyanamide, including a housing, fittings for the entry and exit of reagents and
конечного нродукта, внутреннюю насадку, внутренн новерхность выполнена из меди , циркони , латуни или углеродистой стали обработанной при температуре 600- аммиаком или изоцианатами.The final product, the internal nozzle, the internal surface is made of copper, zirconium, brass or carbon steel treated at a temperature of 600 ammonia or isocyanates.
Такое выполнение устройства обеспечивает проведение реакции получени цианамида в услови х, где побочные реакции разложени конечного продукта не проход т .This embodiment of the device enables the reaction to produce cyanamide under conditions where side reactions of decomposition of the final product do not take place.
На чертеже изображено устройство дл получени цианамида кальци , продольный разрез.The drawing shows a device for producing calcium cyanamide, longitudinal section.
Устройство состоит из корпуса 1, штуцеров 2-5 соответственно дл входа и выхода твердых продуктов, дл входа азота и выхода реакционных газов и газораспределительной решетки 6. Корпус, решетка и штуцера футерованы медью или ее сплавами . В других вариантах аппарат из нержавоющей стали полвер1-аетс ннактнвирую1Дбй сбрзбот ;в иолйкзсцйанйтс1« ,The device consists of a housing 1, fittings 2-5, respectively, for the entry and exit of solid products, for the entry of nitrogen and exit of the reaction gases and the gas distribution grid 6. The housing, the grid and fittings are lined with copper or its alloys. In other embodiments, the stainless steel apparatus is hardened on the right side of the bottom; in iLicScId1,
При работе аппарата через штуцер 2 непрерывно ввод т исходный продукт взаимодействи мочевины с окисью или гидроокисью кальци (cAiecb дианата и циануратов кальци ), который попадает в слой цианамида кальци , наход щийс па ре иетке () и псевдоожижаемый потоком азоja , поступающим через щтуцер 4. ГОТОЕЗЫЙ продукт отвод т через штуцер 3, реакционные газы - через штуцер 5. Благодар тому , что все части аппарата, соприкасающиес с реакционными продуктами (внутренн поверхность корпуса и штуцеров, а также решетк;и), порфыты указанными выше материалами либо обработаны азотсодержащими веществами, цианамид кальци образуетс с высоким выходом и высокого качества.During operation of the apparatus, the starting product of the interaction of urea with calcium oxide or calcium hydroxide (cAiecb of dianate and calcium cyanurates), which enters the calcium cyanamide layer, vaporized () and fluidized by azo gas and supplied through satumer 4, is continuously introduced through nozzle 2. The finished product is discharged through fitting 3, the reaction gases through fitting 5. Due to the fact that all parts of the apparatus in contact with the reaction products (the inner surface of the housing and fittings, as well as the grating; and), the above-mentioned mothers either treated with nitrogenous substances, calcium cyanamide is formed in high yield and high quality.
Данные об эффективности проведени процесса получени циаиамида кальци в устройстве согласно изобретению приведены в таблице, где дл сравнени приведены также даииые об эффективности процесса , проводившегос в устройствах, не проходивших специальной обработки. Врем прокаливани - 3 ч.The data on the effectiveness of the process of obtaining calcium cyanide amide in the device according to the invention is given in the table, where for comparison there are also data on the efficiency of the process carried out in devices that have not undergone special treatment. Calcination time - 3 h.
Использование предложенного устройства позволит создать аппаратуру большого объема и производительности дл промышленного получени цианамида кальци из мочевины.The use of the proposed device will make it possible to create a large-volume and productivity apparatus for the industrial production of calcium cyanamide from urea.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU742027728A SU670537A1 (en) | 1974-05-27 | 1974-05-27 | Device for producing calcium cyanamide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU742027728A SU670537A1 (en) | 1974-05-27 | 1974-05-27 | Device for producing calcium cyanamide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU670537A1 true SU670537A1 (en) | 1979-06-30 |
Family
ID=20585690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU742027728A SU670537A1 (en) | 1974-05-27 | 1974-05-27 | Device for producing calcium cyanamide |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU670537A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995024358A1 (en) * | 1994-03-11 | 1995-09-14 | Skw Trostberg Aktiengesellschaft | Process for preparing calcium cyanamide from urea |
-
1974
- 1974-05-27 SU SU742027728A patent/SU670537A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995024358A1 (en) * | 1994-03-11 | 1995-09-14 | Skw Trostberg Aktiengesellschaft | Process for preparing calcium cyanamide from urea |
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