JP2016175876A - ジエンの製造方法 - Google Patents
ジエンの製造方法 Download PDFInfo
- Publication number
- JP2016175876A JP2016175876A JP2015058329A JP2015058329A JP2016175876A JP 2016175876 A JP2016175876 A JP 2016175876A JP 2015058329 A JP2015058329 A JP 2015058329A JP 2015058329 A JP2015058329 A JP 2015058329A JP 2016175876 A JP2016175876 A JP 2016175876A
- Authority
- JP
- Japan
- Prior art keywords
- olefin
- diene
- fraction
- terminal
- catalyst
- 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.)
- Granted
Links
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
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- 238000006317 isomerization reaction Methods 0.000 claims abstract description 82
- 239000002994 raw material Substances 0.000 claims abstract description 82
- 238000006356 dehydrogenation reaction Methods 0.000 claims abstract description 52
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- 239000000203 mixture Substances 0.000 claims description 27
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- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
【解決手段】ジエンの製造方法は、少なくとも分枝オレフィン及び直鎖オレフィンを含む原料から、分枝オレフィンを除去し、内部オレフィンを得る工程1と、異性化触媒を用いて内部オレフィンを末端オレフィンに異性化する工程2と、脱水素触媒を用いた酸化的脱水素により、工程2で得られた末端オレフィンからジエンを生成する工程3と、を備える。
【選択図】なし
Description
rY1(%)=mP/m01×100 (1)
mPは、工程3において得られるジエンの質量である。m01は、原料中の全炭化水素の質量の合計である。rY1は、原料中の全炭化水素の質量の合計を基準としたジエンの収率である。
rY2(%)=mP/m02×100 (2)
m02は、原料中の全直鎖オレフィンの質量の合計である。rY2は、原料中の全直鎖オレフィンの質量の合計を基準としたジエンの収率である。
工程1で用いる原料は、分枝オレフィン及び直鎖オレフィンを含む。分枝オレフィンの炭素数は、例えば、4〜10であってよく、4〜6であってもよい。直鎖オレフィンの炭素数は、例えば、4〜10であってよく、4〜6であってもよい。分枝オレフィンの炭素数は、直鎖オレフィンの炭素数と同一であってもよい。分枝オレフィンの炭素数は、直鎖オレフィンの炭素数と異なっていてもよい。直鎖オレフィンの炭素数は、目的とするジエンの炭素数と同じであってよい。すなわち、直鎖オレフィンは、工程3の生成物として想定されるジエン中に存在する二重結合の一つを水素化した場合に得られるモノオレフィンであってよい。
工程2では、工程1で得られた内部オレフィンを末端オレフィンに異性化する。つまり、工程2では、仕掛油Aを異性化触媒に接触させて内部オレフィンを異性化し、末端オレフィンを生成する。工程2で用いる異性化触媒は、第1異性化触媒とは異なる。以下では、工程2で用いる異性化触媒を、「第2異性化触媒」と記す。
工程3では、脱水素触媒を用いた酸化的脱水素により、工程2で得られた末端オレフィンからジエンを生成する。つまり工程3では、工程2で得られた末端オレフィンを含む仕掛油Bを脱水素触媒に接触させて、末端オレフィンを酸化的に脱水素し、ジエンを生成する。
以下の手順で、工程3に用いる脱水素触媒を調製した。
<原子比>
Mo:Bi:Co:Ni:Fe:Na:B:K:Si
=12:5:2.5:2.5:0.4:0.35:0.2:0.08:24
<原料の調製>
以下の成分を含む実施例1の原料を調製した。原料中の分枝オレフィン(イソブテン)の質量含有率がC1であり、原料中の直鎖オレフィン(1−ブテン、シス−2−ブテン、及びトランス−2−ブテン)の質量含有率がC2であるとき、C2/C1は2.6であった。
イソブタン: 41.0質量%
イソブテン: 13.0質量%
1−ブテン: 12.0質量%
ノルマルブタン: 12.0質量%
シス−2−ブテン: 9.0質量%
トランス−2−ブテン: 13.0質量%
以下の通り、工程1の反応蒸留を行った。
反応蒸留塔シミュレーションモデルに基づくシミュレーションをコンピューターで行うことにより、工程2の反応蒸留を再現した。シミュレーションの詳細は、以下の通りであった。
サブステップa: 第2異性化触媒を10個直列の完全混合槽反応器に充填した。
サブステップb: サブステップaの完全混合槽反応器を、理論段数が120段である第2反応蒸留塔の100段と20段との間に設置した。
サブステップc: 工程1で得られた留分Aを、サブステップbの第2反応蒸留塔内へ供給し、留分A中の2−ブテンを異性化して1−ブテンを生成した。
サブステップd: 第2反応蒸留塔の塔頂から第1留分を回収し、第2反応蒸留塔の塔底から第2留分を回収した。
第2異性化触媒(シリカアルミナ)の活性エネルギー: 40kJ/mol
第2異性化触媒の頻度因子: 10
留分Aの流入速度: 30t/h
第1留分の流出速度: 20t/h(留分Aの全質量の35質量%)
第2留分の流出速度(塔底流出量): 10t/h
塔底温度: 80.8℃
塔底圧力: 1000KPa
リフラックス比: 7.5
フィード段: 113段
17ccの脱水素触媒を管型反応器(SUS製チューブ)に充填した。管型反応器の内径は14mmであり、全長は60cmであった。脱水素触媒が充填された反応器を流通反応装置に接続した後、電気炉を用いて反応器内の温度を330℃まで昇温させた。工程2のシミュレーションにより算出された組成を有する実施例1の第1留分を、実際に調製した。第1留分、空気及び水蒸気を、昇温後の反応器へ供給し、脱水素触媒へ接触させた。以上の手順で、反応器内で第1留分の酸化的脱水素を行った。反応器へ流入する第1留分、空気及び水蒸気それぞれの速度は、それぞれ下記の値に調整した。反応器へ充填した脱水素触媒中のNiの含有量は、0.54gであった。
第1留分の流入速度: 2.16g/h
空気の流入速度: 60cc/min
水蒸気の流入速度: 1.5g/h
RY1=Sw×MP/100 (1a)
式1aに記載のMPは、生成ガス中のブタジエンの濃度(質量%)である。Sw(質量部)は、原料に含まれる全炭化水素の合計質量を100質量部としたときの、生成ガスに含まれる全炭化水素の相対質量(質量部)である。
RY2=[(Sw×MP)/(100×Mb)]×100 (2a)
式2aに記載の100×Mbのうち100とは、原料に含まれる全炭化水素の合計質量(100質量部)である。Mbとは、原料中の1−ブテン、シス−2−ブテン及びトランス−2−ブテンの濃度(質量%)の合計である。
下記表1に示す組成を有する実施例2の原料を用いたこと以外は実施例1と同様の方法で、実施例2の工程1を行い、実施例2の留分A及びBを得た。実施例2の留分Aを用いたこと以外は実施例1と同様の方法で、実施例2の工程2を行い、実施例2の第1留分を得た。実施例2の第1留分を用いたこと以外は実施例1と同様の方法で、実施例2の工程3を行い、実施例3の生成ガスを得た。実施例1と同様の方法により、実施例2の留分A、第1留分及び生成ガス(工程3の生成物)をそれぞれ分析した。実施例2の分析結果を下記表1に示す。実施例1と同様の方法で算出した実施例2の収率RY1及びRY2を下記表1に示す。なお、実施例2の留分Bの殆どが、イソブタン及びイソブテンであることが確認された。
実施例1と同様の方法で実施例3の工程1を行い、実施例3の留分A及びBを得た。実施例3の留分Aは実施例1の留分Aと同じであった。実施例3の留分Bは実施例1の留分Bと同じであった。
実施例1と同様の方法で比較例1の工程1を行い、比較例1の留分Aを得た。比較例1の留分Aは実施例1の留分Aと同じであった。比較例1の留分Bは実施例1の留分Bと同じであった。次いで、第1留分に代えて比較例1の留分Aを用いたこと以外は、実施例1と同様の方法で、比較例1の工程3を行った。つまり、比較例1では工程2を行わず、工程1に続いて工程3を行った。比較例1の工程3で得られた生成ガスを、実施例1と同様の方法により分析した。比較例1の生成ガスにおける各成分の濃度を下記表1に示す。実施例1と同様の方法で算出した比較例1の収率RY1及びRY2を下記表1に示す。
Claims (11)
- 少なくとも分枝オレフィン及び直鎖オレフィンを含む原料から、前記分枝オレフィンを除去し、内部オレフィンを得る工程1と、
異性化触媒を用いて前記内部オレフィンを末端オレフィンに異性化する工程2と、
脱水素触媒を用いた酸化的脱水素により、前記工程2で得られた前記末端オレフィンからジエンを生成する工程3と、
を備える、
ジエンの製造方法。 - 前記直鎖オレフィンの少なくとも一部が末端オレフィンであり、
前記工程1では、反応蒸留により、前記原料から前記分枝オレフィンを除去し、且つ、前記末端オレフィンを前記内部オレフィンに異性化する、
請求項1に記載のジエンの製造方法。 - 前記異性化触媒が、シリカ及びアルミナからなる群より選択される少なくとも一種を含む、
請求項1又は2に記載のジエンの製造方法。 - 前記脱水素触媒が、ビスマス、モリブテン及び酸素を含む複合酸化物を有する、
請求項1〜3のいずれか一項に記載のジエンの製造方法。 - 前記工程2では、反応蒸留により、前記内部オレフィンを前記末端オレフィンに異性化し、前記末端オレフィンを含む第1留分と、未反応の前記内部オレフィンを含む第2留分と、を得る、
請求項1〜4のいずれか一項に記載のジエンの製造方法。 - 前記工程2では、反応蒸留を行わずに、反応器内で前記内部オレフィンを前記末端オレフィンに異性化し、前記末端オレフィンを、未反応の前記内部オレフィンとの混合物として回収し、
前記工程3では、前記反応器内から回収された前記末端オレフィン及び未反応の前記内部オレフィンを、前記脱水素触媒へ供給する、
請求項1〜4のいずれか一項に記載のジエンの製造方法。 - 前記工程3では、前記脱水素触媒と異性化触媒とを用いて、前記末端オレフィン及び未反応の前記内部オレフィンから前記ジエンを生成し、
前記工程3で用いる前記異性化触媒が、シリカ及びアルミナからなる群より選択される少なくとも一種を含む、
請求項6に記載のジエンの製造方法。 - 前記原料中の前記分枝オレフィンの質量含有率がC1であり、前記原料中の前記直鎖オレフィンの質量含有率がC2であるとき、C2/C1が0.1〜5.0である、
請求項1〜7のいずれか一項に記載のジエンの製造方法。 - 前記直鎖オレフィンがブテンを含む、
請求項1〜8のいずれか一項に記載のジエンの製造方法。 - 前記原料が、重油留分の流動接触分解により得られ、
前記分枝オレフィン又は前記直鎖オレフィンの炭素数が4である、
請求項1〜9のいずれか一項に記載のジエンの製造方法。 - 前記原料が、ナフサの熱分解により得られ、
前記分枝オレフィン又は前記直鎖オレフィンの炭素数が4である、
請求項1〜9のいずれか一項に記載のジエンの製造方法。
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US10723674B2 (en) | 2016-03-15 | 2020-07-28 | Jxtg Nippon Oil & Energy Corporation | Unsaturated hydrocarbon production method and conjugated diene production method |
JP7210262B2 (ja) * | 2018-12-18 | 2023-01-23 | Eneos株式会社 | ブタジエンの製造方法 |
US11420915B2 (en) * | 2020-06-11 | 2022-08-23 | Saudi Arabian Oil Company | Red mud as a catalyst for the isomerization of olefins |
US11427519B2 (en) | 2021-01-04 | 2022-08-30 | Saudi Arabian Oil Company | Acid modified red mud as a catalyst for olefin isomerization |
US12018392B2 (en) | 2022-01-03 | 2024-06-25 | Saudi Arabian Oil Company | Methods for producing syngas from H2S and CO2 in an electrochemical cell |
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