JP6676535B2 - 高沸点炭化水素供給原料をより軽沸点の炭化水素生成物へ転換する方法 - Google Patents
高沸点炭化水素供給原料をより軽沸点の炭化水素生成物へ転換する方法 Download PDFInfo
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- C10G47/00—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions
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Description
重質炭化水素供給原料を、1つまたは複数の水素化分解ユニットのカスケードへ供給するステップと、
水素化分解ユニット内で前記供給原料を分解するステップと、
前記分解した供給原料を、軽沸点炭化水素留分を含む頂部の流れと重質炭化水素留分を含む底部の流れに分離するステップと、
前記水素化分解ユニットの前記底部の流れを、前記1つまたは複数の水素化分解ユニットのカスケード内の後続の水素化分解ユニットのための供給原料として供給するステップであって、ここで、1つまたは複数の水素化分解ユニットのそれぞれの処理条件が互いに異なり、第1の水素化分解ユニットから後続の1つまたは複数の水素化分解ユニットまでの水素化分解条件は、最も過酷でないものから最も過酷なものまで上昇するステップと、
1つまたは複数の水素化分解ユニットのそれぞれからのより軽沸点の炭化水素留分を、水素化分解ユニットであるBTXおよびLPG製造ユニットのための供給原料として処理するステップと、
を備え、前記水素化分解ユニットで使われる処理条件は、1つまたは複数の水素化分解ユニットのカスケード内の1つまたは複数の水素化分解ユニットのいずれか1つで使われる処理条件とは異なることを特徴とする方法に関する。
Claims (11)
- 高沸点炭化水素供給原料を、石油化学製品の処理のための供給原料として適したより軽沸点の炭化水素生成物へ転換する方法であって、
重質炭化水素供給原料を、少なくとも2つの水素化分解ユニットを含む水素化分解ユニットのカスケードへ供給するステップと、
水素化分解ユニット内で前記供給原料を分解するステップと、
前記分解した供給原料を、軽沸点炭化水素留分を含む頂部の流れと重質炭化水素留分を含む底部の流れに分離するステップと
前記水素化分解ユニットの前記底部の流れを、前記水素化分解ユニットのカスケード内の後続の水素化分解ユニットのための供給原料として供給するステップであって、ここで、水素化分解ユニットのそれぞれの処理条件が互いに異なり、第1の水素化分解ユニットから後続の水素化分解ユニットまで温度が上昇する、ステップと、
水素化分解ユニットのそれぞれからのより軽沸点の炭化水素留分を、水素化分解ユニットであるBTXおよびLPG製造ユニットのための供給原料として処理するステップであって、該水素化分解ユニットで使われる処理条件は、前記水素化分解ユニットのカスケード内の前記水素化分解ユニットのいずれか1つで使われる処理条件と異なるステップと、を備え、
前記水素化分解ユニットのカスケード内の水素化分解ユニットすべてからのより軽沸点の炭化水素留分が、沸点がナフタレンより低い炭化水素であり、
前記方法が、前記より軽沸点の炭化水素留分から水素を分離するステップと、分離した前記水素を、前記水素化分解ユニットのカスケード内の水素化分解ユニットへ供給するステップとをさらに備え、特に
分離した前記水素を、前記水素化分解ユニットのカスケード内の先の水素化分解ユニットへ供給するステップをさらに備え、特に
分離した前記水素を前記BTXおよびLPG製造ユニットへ供給するステップをさらに備える、方法。 - 前記水素化分解ユニットのカスケード内の水素化分解ユニットのそれぞれが、液相水素化分解条件下で運転され、前記BTXおよびLPG製造ユニットとしての前記水素化分解ユニットが、気相水素化分解条件下で運転される請求項1に記載の方法。
- 前記水素化分解ユニットからのより軽沸点の炭化水素留分が分離セクションに送られ、該セクションにおいて、C5−材料を含む留分が前記より軽沸点の炭化水素留分から分離され、前記より軽沸点の炭化水素留分の残存部分が前記BTXおよびLPG製造ユニットの供給原料として処理される請求項1乃至2のいずれか1項以上に記載の方法。
- 脱水素化ユニット内で、好ましくは、前記C5−材料を、C3を含む流れとC4を含む流れとにさらに予め分離し、前記流れを、それぞれ、プロパン脱水素化ユニットとブタン脱水素化ユニットに供給することによって、前記C5−材料を処理するステップをさらに備える請求項3に記載の方法。
- 前記重質炭化水素供給原料が、底部の流れ、常圧軽油などの原油常圧蒸留ユニット(ADU)、並びにFCCユニットからの軽質循環油または重質分解ナフサなどの精錬機プロセスからの生成物の群から選択される請求項1乃至4のいずれか1項以上に記載の方法。
- 前記LPG製造ユニットで生成されたLPGを含む留分を、スチームクラッキングユニット、芳香族化ユニット、プロパン脱水素化ユニット、ブタン脱水素化ユニットおよび混合プロパン−ブタン脱水素化ユニットの群から選択される1つ以上の処理ユニットのための供給原料として処理するステップをさらに備える請求項1乃至5のいずれか1項以上に記載の方法。
- 前記水素化分解ユニットは、好ましくは水素化処理ユニットの前に置かれ、前記水素化処理ユニットの底部の流れは、前記第1の水素化分解ユニットの供給原料として使用され、特に、前記水素化処理ユニットで使われる温度は、前記第1の水素化分解ユニットでの温度より高い請求項1乃至6のいずれか1項以上に記載の方法。
- 前記第1の水素化分解ユニット内の温度が、第2の水素化分解ユニット内の温度より低く、特に水素化分解ユニットのカスケードに存在する触媒の粒径が、前記第1の水素化分解ユニットから後続の水素化分解ユニットにかけて減少する請求項1乃至7のいずれか1項に記載の方法。
- 水素化分解ユニットのカスケード内の温度が上昇し、前記第2の水素化分解ユニットで使われる温度が、前記水素化処理ユニットのものより高い請求項7乃至8のいずれか1項に記載の方法。
- 前記水素化分解ユニットの反応器タイプの設計が、固定床タイプ、沸騰床反応器タイプおよびスラリー相タイプの群から選択され、前記水素化処理ユニットの反応器タイプの設計が、好ましくは固定床タイプのものであり、前記第1の水素化分解ユニットの反応器タイプの設計は、好ましくは沸騰床反応器タイプのものであり、前記第2の水素化分解ユニットの反応器タイプの設計は、好ましくはスラリー相タイプのものである請求項1乃至9のいずれか1項以上に記載の方法。
- 最後の水素化分解ユニットの底部の流れが、前記最後の水素化分解ユニットの入口へ再循環される請求項1乃至10のいずれか1項以上に記載の方法。
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| PCT/EP2014/079207 WO2015128038A1 (en) | 2014-02-25 | 2014-12-23 | Method for converting a high-boiling hydrocarbon feedstock into lighter boiling hydrocarbon products |
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| US20250187914A1 (en) * | 2023-12-06 | 2025-06-12 | Saudi Arabian Oil Company | Methods of transporting hydrogen that include hydrocracking and dehydrogenation at separate hydrocarbon processing facilities |
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| EP3110917B1 (en) | 2018-09-26 |
| CN106133119A (zh) | 2016-11-16 |
| EA032566B1 (ru) | 2019-06-28 |
| KR20160126023A (ko) | 2016-11-01 |
| CN106133119B (zh) | 2022-02-25 |
| JP2017511829A (ja) | 2017-04-27 |
| US20170121613A1 (en) | 2017-05-04 |
| EP3110917A1 (en) | 2017-01-04 |
| US10301559B2 (en) | 2019-05-28 |
| KR102454266B1 (ko) | 2022-10-14 |
| WO2015128038A1 (en) | 2015-09-03 |
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