JPH024587B2 - - Google Patents
Info
- Publication number
- JPH024587B2 JPH024587B2 JP55012364A JP1236480A JPH024587B2 JP H024587 B2 JPH024587 B2 JP H024587B2 JP 55012364 A JP55012364 A JP 55012364A JP 1236480 A JP1236480 A JP 1236480A JP H024587 B2 JPH024587 B2 JP H024587B2
- Authority
- JP
- Japan
- Prior art keywords
- urea
- ammonia
- carbon dioxide
- solution
- water
- 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
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 356
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 281
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 198
- 239000004202 carbamide Substances 0.000 claims description 187
- 229910021529 ammonia Inorganic materials 0.000 claims description 127
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 99
- 239000001569 carbon dioxide Substances 0.000 claims description 90
- 239000007788 liquid Substances 0.000 claims description 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 83
- 229910001868 water Inorganic materials 0.000 claims description 81
- 239000007789 gas Substances 0.000 claims description 64
- 238000000034 method Methods 0.000 claims description 39
- 239000002250 absorbent Substances 0.000 claims description 36
- 230000015572 biosynthetic process Effects 0.000 claims description 34
- 238000003786 synthesis reaction Methods 0.000 claims description 33
- 239000002351 wastewater Substances 0.000 claims description 33
- 238000004519 manufacturing process Methods 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 28
- 238000009833 condensation Methods 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 18
- 239000011261 inert gas Substances 0.000 claims description 13
- 239000012808 vapor phase Substances 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 11
- 238000000746 purification Methods 0.000 claims description 11
- 150000003672 ureas Chemical class 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 7
- 239000012071 phase Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 238000002207 thermal evaporation Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 239000000243 solution Substances 0.000 description 71
- 238000004821 distillation Methods 0.000 description 35
- 230000002745 absorbent Effects 0.000 description 27
- 238000001704 evaporation Methods 0.000 description 27
- 239000006096 absorbing agent Substances 0.000 description 26
- 230000008020 evaporation Effects 0.000 description 25
- 230000005494 condensation Effects 0.000 description 13
- 239000000498 cooling water Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 10
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 9
- 238000011084 recovery Methods 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 6
- 239000008187 granular material Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 239000011541 reaction mixture Substances 0.000 description 6
- 238000000889 atomisation Methods 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000003795 desorption Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 3
- 230000003134 recirculating effect Effects 0.000 description 3
- 238000005201 scrubbing Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- JJEJDZONIFQNHG-UHFFFAOYSA-N [C+4].N Chemical compound [C+4].N JJEJDZONIFQNHG-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 238000007738 vacuum evaporation Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 241000282849 Ruminantia Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000012993 chemical processing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010960 commercial process Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 150000001913 cyanates Chemical class 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 150000002148 esters Chemical class 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
- 239000003326 hypnotic agent Substances 0.000 description 1
- 230000000147 hypnotic effect Effects 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 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
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000000606 toothpaste Substances 0.000 description 1
- 229940034610 toothpaste Drugs 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000009423 ventilation Methods 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 |
|---|---|---|---|
| JP1236480A JPS56110663A (en) | 1980-02-04 | 1980-02-04 | Manufacture of urea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1236480A JPS56110663A (en) | 1980-02-04 | 1980-02-04 | Manufacture of urea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56110663A JPS56110663A (en) | 1981-09-01 |
| JPH024587B2 true JPH024587B2 (ru) | 1990-01-29 |
Family
ID=11803211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1236480A Granted JPS56110663A (en) | 1980-02-04 | 1980-02-04 | Manufacture of urea |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56110663A (ru) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5681985B2 (ja) * | 2010-11-24 | 2015-03-11 | 独立行政法人産業技術総合研究所 | 二酸化炭素固定化による尿素化合物の製造法 |
| EP2844640B1 (en) * | 2012-05-03 | 2018-08-29 | Stamicarbon B.V. | Urea production plant |
| EP4085049B1 (en) * | 2019-12-30 | 2024-01-03 | Stamicarbon B.V. | Ammonia removal from urea finishing |
-
1980
- 1980-02-04 JP JP1236480A patent/JPS56110663A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56110663A (en) | 1981-09-01 |
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