BE391367A - - Google Patents

Info

Publication number

BE391367A

BE391367A BE391367DA BE391367A BE 391367 A BE391367 A BE 391367A BE 391367D A BE391367D A BE 391367DA BE 391367 A BE391367 A BE 391367A

Authority

BE

Belgium

Prior art keywords

calcium

reaction

parts

thiourea

hydrogen sulfide

Prior art date

Links

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• UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 38
• 238000006243 chemical reaction Methods 0.000 claims description 21
• RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 19
• XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 19
• 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 12
• 238000000227 grinding Methods 0.000 claims description 8
• OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 7
• 229910052791 calcium Inorganic materials 0.000 claims description 7
• 239000011575 calcium Substances 0.000 claims description 7
• 238000000034 method Methods 0.000 claims description 7
• 150000004763 sulfides Chemical class 0.000 claims description 5
• 239000003795 chemical substances by application Substances 0.000 claims description 4
• 150000003839 salts Chemical class 0.000 claims description 4
• 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 3
• 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
• 239000011541 reaction mixture Substances 0.000 claims description 2
• IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 26
• 229910052757 nitrogen Inorganic materials 0.000 description 13
• QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
• AGVJBLHVMNHENQ-UHFFFAOYSA-N Calcium sulfide Chemical class [S-2].[Ca+2] AGVJBLHVMNHENQ-UHFFFAOYSA-N 0.000 description 10
• CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
• 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 9
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
• 230000009466 transformation Effects 0.000 description 5
• 239000000047 product Substances 0.000 description 4
• VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 3
• 150000001408 amides Chemical class 0.000 description 3
• OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 3
• 239000001569 carbon dioxide Substances 0.000 description 3
• 229910002092 carbon dioxide Inorganic materials 0.000 description 3
• 239000000706 filtrate Substances 0.000 description 3
• 238000001914 filtration Methods 0.000 description 3
• 239000000203 mixture Substances 0.000 description 3
• XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 2
• NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
• 238000010521 absorption reaction Methods 0.000 description 2
• 230000015572 biosynthetic process Effects 0.000 description 2
• -1 for example Substances 0.000 description 2
• 238000004519 manufacturing process Methods 0.000 description 2
• 230000035484 reaction time Effects 0.000 description 2
• 239000007858 starting material Substances 0.000 description 2
• 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
• 235000011941 Tilia x europaea Nutrition 0.000 description 1
• 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
• CJDPJFRMHVXWPT-UHFFFAOYSA-N barium sulfide Chemical compound [S-2].[Ba+2] CJDPJFRMHVXWPT-UHFFFAOYSA-N 0.000 description 1
• 229910000019 calcium carbonate Inorganic materials 0.000 description 1
• 235000011132 calcium sulphate Nutrition 0.000 description 1
• 239000001175 calcium sulphate Substances 0.000 description 1
• 150000001875 compounds Chemical class 0.000 description 1
• 238000002425 crystallisation Methods 0.000 description 1
• 230000008025 crystallization Effects 0.000 description 1
• 238000000354 decomposition reaction Methods 0.000 description 1
• 239000007789 gas Substances 0.000 description 1
• 238000010438 heat treatment Methods 0.000 description 1
• 239000004571 lime Substances 0.000 description 1
• 229920001021 polysulfide Polymers 0.000 description 1
• 239000002244 precipitate Substances 0.000 description 1
• 229940088417 precipitated calcium carbonate Drugs 0.000 description 1
• 238000010517 secondary reaction Methods 0.000 description 1
• 238000000926 separation method Methods 0.000 description 1
• 239000001488 sodium phosphate Substances 0.000 description 1
• 229910000162 sodium phosphate Inorganic materials 0.000 description 1
• 239000007787 solid Substances 0.000 description 1
• 238000003756 stirring Methods 0.000 description 1
• RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
• 238000001238 wet grinding Methods 0.000 description 1