JP6688383B2 - 2,3,3,3−テトラフルオロプロペン(1234yf)の調製プロセス - Google Patents
2,3,3,3−テトラフルオロプロペン(1234yf)の調製プロセス Download PDFInfo
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Description
(a)フッ素化反応器中で3,3,3−トリフルオロ−2−クロロ−プロパ−1−エン(CF3CCl=CH2、1233xf)を含む第1の組成物をフッ化水素(HF)で気相触媒フッ素化して、1,1,1,2,2−ペンタフルオロプロパン(245cb)、HF及びHClを含むフッ素化生成物流を生成することと、
(b)脱フッ化水素化反応器中で245cbを含む第2の組成物を気相触媒脱フッ化水素化して、1234yf及びHFを含む脱フッ化水素化生成物流を生成することと、
ここで、フッ素化生成物流及び脱フッ化水素化生成物流を合わせ、(c)精製を施して、245cb及び1234yfの生成物流を含む組成物を生成することとを含む。
Cr2O3+2HF→2CrOF+H2O
CF3CHClCH2Cl→CF3CCl=CH2
Claims (20)
- 2,3,3,3−テトラフルオロプロペン(1234yf)を調製するための統合されたプロセスであって、
(a)フッ素化反応器中で3,3,3−トリフルオロ−2−クロロ−プロパ−1−エン(CF3CCl=CH2、1233xf)を含む第1の組成物をフッ化水素(HF)で気相触媒フッ素化して、1,1,1,2,2−ペンタフルオロプロパン(245cb)、HF、及びHClを含むフッ素化生成物流を生成することと、
(b)脱フッ化水素化反応器中で245cbを含む第2の組成物を気相触媒脱フッ化水素化して、1234yf及びHFを含む脱フッ化水素化生成物流を生成することと、
前記フッ素化生成物流と前記脱フッ化水素化生成物流を合流させ、(c)精製を施して、245cb及び1234yfの生成物流を含む組成物を生成することと、を含み、前記精製工程(c)が、蒸留工程を含み、ここで、245cb、1234yf、任意の1234ze(E)、及び一部のHFを含む、軽質留分が蒸留されて、HFの大部分及び未反応1233xfを含む、重質留分を残し、前記軽質留分が、蒸留塔から取り出され、スクラビングトレインに通される、プロセス。 - 245cb及び1234yfの生成物流を含む前記組成物が、前記第2の組成物として前記脱フッ化水素化反応器に供給される、請求項1に記載のプロセス。
- 前記1234yfの少なくとも一部が、245cb及び1234yfの生成物流を含む前記組成物から除去され、前記得られた組成物が、前記第2の組成物として前記脱フッ化水素化反応器に供給される、請求項1に記載のプロセス。
- 前記1234yfの少なくとも一部が除去された後、前記得られた組成物が、精製工程を施され、ここで、前記組成物中に存在し得る任意の1234zeの少なくとも一部が、低減された1234yf濃度を有する前記組成物が前記第2の組成物として前記脱フッ化水素化反応器に供給される前に除去される、請求項3に記載のプロセス。
- 前記精製工程(c)が、1つ以上の相分離工程を含む、請求項1〜4のいずれかに記載のプロセス。
- 前記精製工程(c)における前記スクラビングトレインが、順番に、バルク酸除去工程、微量の酸除去工程、及び1つ以上の乾燥工程を含む、請求項1〜5のいずれか1項に記載のプロセス。
- HFが、少なくとも1つの蒸留塔から回収され、任意に反応(a)での使用のためにリサイクルされる、請求項1〜6のいずれか1項に記載のプロセス。
- 前記HFが、リサイクルする前に、さらなる精製を施される、請求項7に記載のプロセス。
- 前記HFが、相分離によって精製される、請求項8に記載のプロセス。
- 前記プロセスが、243dbの脱塩化水素化によって、反応(a)で使用される前記1233xfを得る工程を含む、請求項1〜9のいずれか1項に記載のプロセス。
- 前記脱塩化水素化反応が、HFの存在下及び/または空気の非存在下で行われる、請求項10に記載のプロセス。
- 前記脱塩化水素化反応が、亜鉛/クロミア触媒の存在下で行われる、請求項10または11に記載のプロセス。
- 前記脱塩化水素化反応が、HFの存在下で行われ、前記HFの少なくとも一部が、工程(c)からリサイクルされる、請求項10〜12のいずれか1項に記載のプロセス。
- 反応(a)が、空気の存在下で行われる、請求項1〜13のいずれか1項に記載のプロセス。
- 前記フッ素化生成物流は、この生成物流が前記脱フッ化水素化生成物流と合流される前に、精製工程を施されて、前記HClの少なくとも一部及び前記空気の少なくとも一部を除去する、請求項14に記載のプロセス。
- 蒸留が、前記HClの少なくとも一部及び前記空気の少なくとも一部を除去するために使用される、請求項15に記載のプロセス。
- 反応(a)が、亜鉛/クロミア触媒の存在下で行われる、請求項1〜16のいずれか1項に記載のプロセス。
- 反応(b)が、アルミナまたは亜鉛/クロミア触媒上のクロムの存在下で行われる、請求項1〜17のいずれか1項に記載のプロセス。
- 反応(a)が、200〜300℃の温度及び500〜1500KPaの圧力で行われる、請求項1〜18のいずれか1項に記載のプロセス。
- 反応(b)が、300〜500℃の温度及び/または0〜1500kPaの圧力で行われる、請求項1〜19のいずれか1項に記載のプロセス。
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GB1512593.3 | 2015-07-17 | ||
GB1512593.3A GB2540427B (en) | 2015-07-17 | 2015-07-17 | Process for the preparation of 2,3,3,3-tetrafluoropropene (1234yf) |
PCT/GB2016/052145 WO2017013406A1 (en) | 2015-07-17 | 2016-07-14 | Process for the preparation of 2,3,3,3-tetrafluoropropene (1234yf) |
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JP2018524376A JP2018524376A (ja) | 2018-08-30 |
JP2018524376A5 JP2018524376A5 (ja) | 2019-12-26 |
JP6688383B2 true JP6688383B2 (ja) | 2020-04-28 |
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EP (1) | EP3325435B1 (ja) |
JP (1) | JP6688383B2 (ja) |
KR (1) | KR102676107B1 (ja) |
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ES (1) | ES2864023T3 (ja) |
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JP6115550B2 (ja) | 2014-11-17 | 2017-04-19 | ダイキン工業株式会社 | HFC−245cbと(E)−HFO−1234zeとを含有する組成物から両化合物を分離する方法 |
GB201712775D0 (en) * | 2017-08-09 | 2017-09-20 | Mexichem Fluor Sa De Cv | Compositions and uses thereof |
US10233137B1 (en) * | 2017-10-13 | 2019-03-19 | Honeywell International Inc. | Method for removing unsaturated halogenated impurities from 2,3,3,3-tetrafluoropropene (HFO-1234yf) |
US11209196B2 (en) * | 2018-10-26 | 2021-12-28 | The Chemours Company Fc, Llc | HFO-1234ZE, HFO-1225ZC and HFO-1234YF compositions and processes for producing and using the compositions |
CN109438170B (zh) * | 2018-11-27 | 2022-02-01 | 浙江三美化工股份有限公司 | 一种2,3,3,3-四氟丙烯的制备方法 |
GB2582364A (en) * | 2019-03-21 | 2020-09-23 | Mexichem Fluor Sa De Cv | Methods |
WO2021093029A1 (en) | 2019-11-13 | 2021-05-20 | Fujian Yongjing Technology Co., Ltd | New process for synthesis of 2,3,3,3-tetrafluoropropene (1234yf) and 2,3-dichloro-1,1,1-trifluoropropane (243db) |
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GB2540427A (en) | 2017-01-18 |
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