JP4454332B2 - アクリロニトリル製造用蒸留塔 - Google Patents
アクリロニトリル製造用蒸留塔 Download PDFInfo
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- JP4454332B2 JP4454332B2 JP2004030953A JP2004030953A JP4454332B2 JP 4454332 B2 JP4454332 B2 JP 4454332B2 JP 2004030953 A JP2004030953 A JP 2004030953A JP 2004030953 A JP2004030953 A JP 2004030953A JP 4454332 B2 JP4454332 B2 JP 4454332B2
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- JP
- Japan
- Prior art keywords
- acrylonitrile
- tower
- reboiler
- distillation column
- distillation
- 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.)
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- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 title claims description 49
- 238000004821 distillation Methods 0.000 title claims description 49
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 claims description 28
- 238000000746 purification Methods 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 20
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 19
- 238000007254 oxidation reaction Methods 0.000 claims description 16
- 238000009835 boiling Methods 0.000 claims description 10
- 229910021529 ammonia Inorganic materials 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 238000000605 extraction Methods 0.000 description 10
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 9
- 239000000047 product Substances 0.000 description 8
- 239000012495 reaction gas Substances 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 7
- 238000006116 polymerization reaction Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241000375392 Tana Species 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001944 continuous distillation Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
アクリロニトリルの製造工程では、炭化水素とアンモニアと酸素含有ガスを含む原料ガスを反応器に供給し、この反応器内でアンモニウム酸化触媒を用いて流動層などによる酸化反応を行わせ、その際に生成したガスからアクリロニトリル成分を回収すると共に精製する。
急冷塔2は、ガス洗浄塔と、熱交換器等とで構成できる。
このようにして、抜き出し管9には、濾過器10を目詰まりさせるような不溶性の固形状重合物がほとんど含まれず、ポンプ11の流量が安定して各蒸留塔内から順調に缶出液が抜き出され、各蒸留塔のそれぞれの機能を安定して働かせることができる。
図2に示すアクリロニトリル製造工程に用いる精製塔7(塔径50cm)にアクリロニトリルを主成分とする乾燥塔からの塔底液を8.32kg/hの流量で供給し、リボイラ8で塔底(BTM)温度65℃の液を再沸騰させながら精製塔7の下部に戻し、アクリロニトリルを精製した。圧力は200Torrで操作した。
図3に示されるアクリロニトリル製造工程に用いる精製塔7(塔径50cm)に実施例1の場合と同様にして、アクリロニトリルを主成分とする乾燥塔からの塔底液を8.32kg/hの流量で供給し、リボイラ8で塔底(BTM)温度65℃の液を再沸騰させながら精製塔7の下部に戻し、塔頂部から低沸点のガス状のアクリロニトリルを主成分とする精製されたアクリロニトリル(図中に「製品AN」で示す。)を8.00kg/hの流量で抜き出してアクリロニトリルを精製した。圧力は200Torrで操作した。
2 急冷塔
3 吸収塔
4 回収塔
5 脱青酸塔
6 乾燥塔
7 精製塔
8 リボイラ
9 抜き出し管
10 濾過器
11 ポンプ
12、13、14 弁
Claims (3)
- 炭化水素、アンモニアおよび酸素含有ガスの気相酸化反応により生成されたアクリロニトリルを含有する液の蒸留塔にリボイラを付設し、このリボイラで塔底液を加熱蒸発させて塔内へ再供給すると共に、所要成分の捕集または精製を行なう蒸留塔において、
前記リボイラ底部に接続された抜き出し管に濾過器を付設した蒸留塔缶出液の抜き出し経路を設けたことを特徴とするアクリロニトリル製造用蒸留塔。 - 蒸留塔が、アクリロニトリル製造工程において、アクリロニトリルを回収する回収塔、アクリロニトリルと青酸が溶解した水溶液から青酸を分離する脱青酸塔、水分を分離する乾燥塔および高沸点の不純物を除去する精製塔からなる群から選ばれる1以上の蒸留塔である請求項1に記載のアクリロニトリル製造用蒸留塔。
- 缶出液の抜き出し経路とリボイラとの接続が、リボイラの底部である請求項1または2に記載のアクリロニトリル製造用蒸留塔。
Priority Applications (1)
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JP2004030953A JP4454332B2 (ja) | 2004-02-06 | 2004-02-06 | アクリロニトリル製造用蒸留塔 |
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JP2004030953A JP4454332B2 (ja) | 2004-02-06 | 2004-02-06 | アクリロニトリル製造用蒸留塔 |
Publications (2)
Publication Number | Publication Date |
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JP2005220093A JP2005220093A (ja) | 2005-08-18 |
JP4454332B2 true JP4454332B2 (ja) | 2010-04-21 |
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JP2004030953A Expired - Lifetime JP4454332B2 (ja) | 2004-02-06 | 2004-02-06 | アクリロニトリル製造用蒸留塔 |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5785728B2 (ja) * | 2011-02-15 | 2015-09-30 | 旭化成ケミカルズ株式会社 | 不飽和ニトリルの蒸留方法及び蒸留装置、並びに不飽和ニトリルの製造方法 |
CN111320520B (zh) * | 2018-12-14 | 2024-01-23 | 中国石油化工股份有限公司 | 一种用于丁二烯分离的萃取精馏塔和分离方法 |
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2004
- 2004-02-06 JP JP2004030953A patent/JP4454332B2/ja not_active Expired - Lifetime
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