SU138610A1 - - Google Patents
Info
- Publication number
- SU138610A1 SU138610A1 SU681297A SU681297A SU138610A1 SU 138610 A1 SU138610 A1 SU 138610A1 SU 681297 A SU681297 A SU 681297A SU 681297 A SU681297 A SU 681297A SU 138610 A1 SU138610 A1 SU 138610A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- thiourea
- dioxide
- product
- oxidizing
- interaction
- Prior art date
Links
- UMGDCJDMYOKAJW-UHFFFAOYSA-N Thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 4
- FYOWZTWVYZOZSI-UHFFFAOYSA-N Thiourea dioxide Chemical compound NC(=N)S(O)=O FYOWZTWVYZOZSI-UHFFFAOYSA-N 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N hydrogen peroxide Substances OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 230000001590 oxidative Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- CWGBFIRHYJNILV-UHFFFAOYSA-N (1,4-diphenyl-1,2,4-triazol-4-ium-3-yl)-phenylazanide Chemical compound C=1C=CC=CC=1[N-]C1=NN(C=2C=CC=CC=2)C=[N+]1C1=CC=CC=C1 CWGBFIRHYJNILV-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- VZGDMQKNWNREIO-UHFFFAOYSA-N Carbon tetrachloride Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N carbodiimide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-M hydrosulfide Chemical compound [SH-] RWSOTUBLDIXVET-UHFFFAOYSA-M 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000001376 precipitating Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001603 reducing Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Description
Двуокись тиомочевины, обладающа восстанавливающими свойствами , представл ет промышленный интерес, в частности дл обеспечени нужд .nponsBOACTiBa искусственного волокна «нитрон.Thiourea dioxide, which has reducing properties, is of industrial interest, in particular, for the maintenance of the .nponsBOACTiBa artificial fiber "Nitron."
Известны различные способы получени двуокиси тиомочевины, например окислением тиомочевины ЗОо/о-ной перекисью водорода при пониженных температурах с выходом целевого продукта в количестве 440/0 или окислением тиомочевины перекисью водорода в среде хлористого углерода или другого инертного растворител . Однако все известные способы характеризуютс сложностью оформлени технологического процесса и недостаточно высоким качеством получаемого продукта .Various methods are known for producing thiourea dioxide, for example, by oxidizing thiourea with ZOO / o-hydrogen peroxide at lower temperatures to yield the desired product in an amount of 440/0 or by oxidizing thiourea with hydrogen peroxide in a medium of carbon chloride or another inert solvent. However, all known methods are characterized by the complexity of the design process and the insufficiently high quality of the product.
Предложенный способ получени двуокиси тиомочевины заключаетс во взаимодействии реакционного раствора, получаемого в результате реакции между цианамидом кальци и гидросульфидом (после отделени от него гидроокиси кальци ). При взаимодействии указанных компонентов непрерывным отдел етс продукционна двуокись тиомочевины с ее последующей фильтрацией, промывкой и сущкой при температуре не выше 60° С. Используемый исходный раствор ввод т в реактор при содержании в нем тиомочевины не менее 80 г/л. Это увеличивает выход и улучшает качество продукта.The proposed method for the preparation of thiourea dioxide consists in the interaction of the reaction solution resulting from the reaction between calcium cyanamide and hydrosulfide (after separation of calcium hydroxide from it). During the interaction of these components, thiourea production dioxide is continuously separated with its subsequent filtration, washing and essence at a temperature not higher than 60 ° C. The initial solution used is introduced into the reactor with a content of thiourea in it not less than 80 g / l. This increases the yield and improves the quality of the product.
Кроме того, маточный раствор после выделени из него двуокиси тиомочевины используют дл приготовлени исходного раствора, что позвол ет устранить загр знение сточмых вод.In addition, the mother liquor, after precipitating thiourea dioxide from it, is used to prepare the stock solution, which eliminates the pollution of the wastewater.
Publications (1)
Publication Number | Publication Date |
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SU138610A1 true SU138610A1 (en) |
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