JPH0422905B2 - - Google Patents
Info
- Publication number
- JPH0422905B2 JPH0422905B2 JP57217939A JP21793982A JPH0422905B2 JP H0422905 B2 JPH0422905 B2 JP H0422905B2 JP 57217939 A JP57217939 A JP 57217939A JP 21793982 A JP21793982 A JP 21793982A JP H0422905 B2 JPH0422905 B2 JP H0422905B2
- Authority
- JP
- Japan
- Prior art keywords
- stage
- ammonia
- pressure
- urea
- carbon dioxide
- 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 - Lifetime
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 190
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 187
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 105
- 239000004202 carbamide Substances 0.000 claims description 104
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 95
- 239000001569 carbon dioxide Substances 0.000 claims description 86
- 238000003786 synthesis reaction Methods 0.000 claims description 79
- 230000015572 biosynthetic process Effects 0.000 claims description 78
- 239000000243 solution Substances 0.000 claims description 72
- 238000004821 distillation Methods 0.000 claims description 69
- 238000000034 method Methods 0.000 claims description 69
- 229910021529 ammonia Inorganic materials 0.000 claims description 66
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 55
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 claims description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 39
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 29
- 238000010521 absorption reaction Methods 0.000 claims description 28
- 238000000926 separation method Methods 0.000 claims description 28
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 239000012265 solid product Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 5
- 150000003672 ureas Chemical class 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 description 85
- 239000007789 gas Substances 0.000 description 83
- 229910001868 water Inorganic materials 0.000 description 40
- 238000009833 condensation Methods 0.000 description 18
- 230000005494 condensation Effects 0.000 description 17
- 239000000463 material Substances 0.000 description 14
- 238000005265 energy consumption Methods 0.000 description 10
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 208000005156 Dehydration Diseases 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 241000282849 Ruminantia Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57217939A JPS59110664A (ja) | 1982-12-14 | 1982-12-14 | 尿素の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57217939A JPS59110664A (ja) | 1982-12-14 | 1982-12-14 | 尿素の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59110664A JPS59110664A (ja) | 1984-06-26 |
| JPH0422905B2 true JPH0422905B2 (enrdf_load_stackoverflow) | 1992-04-20 |
Family
ID=16712070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57217939A Granted JPS59110664A (ja) | 1982-12-14 | 1982-12-14 | 尿素の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59110664A (enrdf_load_stackoverflow) |
-
1982
- 1982-12-14 JP JP57217939A patent/JPS59110664A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59110664A (ja) | 1984-06-26 |
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