JP6619350B2 - 接触分解を利用した、混合炭化水素元からbtxを製造する方法 - Google Patents
接触分解を利用した、混合炭化水素元からbtxを製造する方法 Download PDFInfo
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- JP6619350B2 JP6619350B2 JP2016553853A JP2016553853A JP6619350B2 JP 6619350 B2 JP6619350 B2 JP 6619350B2 JP 2016553853 A JP2016553853 A JP 2016553853A JP 2016553853 A JP2016553853 A JP 2016553853A JP 6619350 B2 JP6619350 B2 JP 6619350B2
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- Prior art keywords
- aromatization
- aromatic ring
- catalyst
- catalytic cracking
- btx
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- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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Description
(a)炭化水素供給流に接触分解を行って、接触分解ガソリンおよびサイクルオイルを生成する工程、
(b)サイクルオイルに芳香環開環を行って、BTXを生成する工程、および
(c)接触分解ガソリンからBTXを回収する工程、
を有してなる方法を提供する。
(a)炭化水素供給流に接触分解を行って、接触分解ガソリンおよびサイクルオイルを生成する工程、
(b)水素の存在下でサイクルオイルに芳香環開環を行って、BTXを生成する工程、および
(c)接触分解ガソリンからBTXを回収する工程、
を有してなる方法を提供する。
炭化水素供給流(1)の入口、接触分解ガソリン(6)の出口およびサイクルオイル(7)の出口を有する接触分解ユニット(4);
サイクルオイル(7)の入口およびBTX(13)の出口を有する芳香環開環ユニット(9);および
接触分解ガソリン(6)の入口およびBTX(12)の出口を有するBTX回収ユニット(8);
を備えたプロセス装置を提供する。
ここに与えられた実験データは、Aspen Plusにおけるフローチャートモデル化により得た。流動接触分解装置について、生成物の収率および組成は、文献から得た実験データに基づく。ガソリン水素化分解の前に行われる芳香環開環について、多環芳香族化合物の全てがBTXおよびLPGに転化され、ナフテン系化合物およびパラフィン系化合物の全てがLPGに転化される、反応スキームを使用した。
例2は、以下を除いて、例1と同じである:
芳香族化プロセスで、接触分解ユニット、ガソリン水素化分解ユニットおよび芳香環開環ユニットにより生じたC3およびC4炭化水素が処理される。原料組成におけるばらつき(例えば、オレフィン含有量)により異なる収率パターンが、文献から得られ、装置の境界内の生成物分量(表2)を決定するために前記モデルに適応された。芳香族化ユニット(水素生成ユニット)により生成された水素は、水素消費ユニット(ガソリン水素化分解ユニットおよび芳香環開環ユニット)においてその後使用できる。
例3は、以下を除いて、例1と同じである:
ライトバージンナフサを接触分解プロセスの原料として使用する。この供給物を使用した生成物の収率および組成は、文献から得た実験データに基づく。より軽質の原料を使用することにより、中間蒸留物の生成、それゆえ、芳香環開環ユニットがその留分を処理する必要性が避けられる。その上、VGOを使用する場合と比べて、生成される水素が劇的に増加する(例1における全供給物の1.3質量%の不足と比べて、全供給物の0.6質量%の全水素の余剰)。
例4は、以下を除いて、例2と同じである:
例3と同じ原料(ライトバージンナフサ)を使用する。それゆえ、この場合、芳香環開環ユニットは必要ない。全体として、これは、最大の水素の余剰の場合である:全供給物の1.7質量%。
2 接触分解により生成される燃料ガス
3 接触分解により生成されるLPG
4 接触分解ユニット
5 接触分解により生成されるコークス
6 接触分解ガソリン
7 サイクルオイル
8 BTX回収ユニット
9 芳香環開環ユニット
10 芳香環開環により生成される軽質蒸留物
11 BTX回収により生成されるLPG
12 BTX回収により生成されるBTX
13 芳香環開環により生成されるBTX
14 芳香環開環により生成されるLPG
15 (第1の)芳香族化により生成される燃料ガス
16 (第1の)芳香族化ユニット
17 (第1の)芳香族化により精製されるBTX
18 芳香環開環に供給される、(第1の)芳香族化により生成される水素
19 BTX回収に供給される、(第1の)芳香族化により生成される水素
20 BTX回収により生成される燃料ガス
21 BTX開環により生成される燃料ガス
22 第2の芳香族化により生成される水素
23 BTX回収に供給される、第2の芳香族化により生成される水素
24 芳香環開環に供給される、第2の芳香族化により生成される水素
25 第2の芳香族化ユニット
26 第2の芳香族化により生成される燃料ガス
27 第1の芳香族化により生成されるLPG
28 第2の芳香族化により生成されるBTX
29 第2の芳香族化により生成されるLPG
Claims (11)
- BTXを製造する方法であって、
(a)流動接触分解(FCC)ユニットにおいて、炭化水素供給流に接触分解を行って、接触分解ガソリンおよびサイクルオイルを生成する工程であって、
該接触分解が、FCC条件下で前記供給流をFCC触媒と接触させることを含む流動接触分解であり、該FCC触媒がゼオライトを含み、該FCC条件が、425〜730℃の温度およびゲージ圧で10〜800kPaの圧力を含む工程、
(b)前記サイクルオイルに、水素および芳香環開環触媒の存在下、芳香環開環を行って、BTXを生成する工程、
(c)前記接触分解ガソリンからBTXを回収する工程、および
(d)前記(a)接触分解によりさらにLPGが生成され、該生成されたLPGに芳香族化を行って、BTXを生成する工程、を有してなり、さらに
(i)前記(b)芳香環開環により軽質蒸留物がさらに生成され、該軽質蒸留物からBTXを回収する工程を含み、
(ii)前記接触分解ガソリンおよび/または前記軽質蒸留物に水素化分解を行うことによって、該接触分解ガソリンおよび/または軽質蒸留物から前記BTXが回収され、さらに
(iii)前記芳香環開環および好ましくは前記水素化分解によりさらにLPGが生成され、該LPGに芳香族化を行って、BTXを生成する工程、を含む
方法。 - 芳香族化を行う前に、前記接触分解により生成されたLPGから、プロピレンおよび/またはブチレンを分離する、請求項1に記載の方法。
- 前記接触分解が、540〜730℃の温度およびゲージ圧で10〜800kPaの圧力を含むことが好ましい、高苛酷度FCCである、請求項1または2に記載の方法。
- 前記水素化分解が、水素化分解条件下において、水素の存在下で前記接触分解ガソリンおよび好ましくは前記軽質蒸留物を水素化分解触媒と接触させる工程を含み、該水素化分解触媒が、全触媒質量に対して0.1〜1質量%の水素化金属並びに5〜8Åの細孔径および5〜200のシリカ(SiO2)対アルミナ(Al2O3)モル比を有するゼオライトを含み、前記水素化分解条件が、400〜580℃の温度、ゲージ圧で300〜5000kPaの圧力および0.1〜20h-1の重量空間速度(WHSV)を含む、請求項1〜3のいずれかに記載の方法。
- 前記芳香環開環が、芳香環開環条件下において、水素の存在下で、前記サイクルオイルを芳香環開環触媒と接触させる工程を含み、
前記芳香環開環触媒が、好ましくはアルミナ、シリカ、アルミナ−シリカおよびゼオライトからなる群より選択される、酸性固体上に担持された金属または金属硫化物形態にあるPd、Rh、Ru、Ir、Os、Cu、Co、Ni、Pt、Fe、Zn、Ga、In、Mo、WおよびVからなる群より選択される元素を1つ以上含むことが好ましい、遷移金属または金属硫化物成分および担体を含み、前記芳香環開環条件が、100〜600℃の温度、1〜12MPaの圧力を含む、請求項1〜4のいずれかに記載の方法。 - 前記芳香環開環触媒が、耐火性担体上の、Ni、WおよびMoからなる群より選択される元素を1つ以上含む芳香族水素化触媒;および遷移金属または金属硫化物成分および担体を含む環開裂触媒を含み、
前記芳香族水素化の条件が、100〜500℃の温度、2〜10MPaの圧力および1〜30質量%の水素(炭化水素原料に対して)の存在を含み、
前記環開裂が、200〜600℃の温度、1〜12MPaの圧力および1〜20質量%の水素(炭化水素原料に対して)の存在を含む、請求項5に記載の方法。 - 前記芳香族化が、芳香族化条件下で、前記LPGを前記芳香族化触媒と接触させる工程を有してなり、
前記芳香族化触媒が、ZSM−5およびゼオライトLからなる群より選択されるゼオライトを含み、Ga、Zn、GeおよびPtからなる群より選択される元素を1つ以上必要に応じてさらに含み、
前記芳香族化条件が、400〜600の温度、ゲージ圧で100〜1000kPaの圧力および0.1〜20h-1の重量空間速度(WHSV)を含む、請求項1〜6のいずれかに記載の方法。 - 前記水素化分解および前記芳香環開環により生成された前記LPGに、パラフィン系炭化水素の芳香族化に関して最適化された第1の芳香族化を行い、該第1の芳香族化が、400〜600の温度、ゲージ圧で100〜1000kPaの圧力および0.1〜7h-1の重量空間速度(WHSV)を含む芳香族条件を有することが好ましい;および/または
前記接触分解により生成された前記LPGに、オレフィン系炭化水素の芳香族化に関して最適化された第2の芳香族化を行い、該第2の芳香族化が、400〜600の温度、ゲージ圧で100〜1000kPaの圧力および0.1〜20h-1の重量空間速度(WHSV)を含む芳香族化条件を有することが好ましい、請求項1〜7のいずれかに記載の方法。 - 前記芳香環開環、前記水素化分解および前記芳香族化からなる群より選択される1つ以上により、さらにメタンが生成され、該メタンが、プロセス熱を与えるための燃料ガスとして使用される、請求項1〜8のいずれかに記載の方法。
- 前記炭化水素供給流が、ナフサ、灯油、軽油および残油からなる群より選択される1つ以上を含む、請求項1〜9のいずれかに記載の方法。
- 前記芳香族化により、さらに水素が生成され、該水素が、前記水素化分解および/または前記芳香環開環に使用される、請求項1〜10のいずれかに記載の方法。
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FR3027911B1 (fr) | 2014-11-04 | 2018-04-27 | IFP Energies Nouvelles | Procede de conversion de charges petrolieres comprenant une etape d'hydrocraquage en lit bouillonnant, une etape de maturation et une etape de separation des sediments pour la production de fiouls a basse teneur en sediments |
FR3033797B1 (fr) | 2015-03-16 | 2018-12-07 | IFP Energies Nouvelles | Procede ameliore de conversion de charges hydrocarbonees lourdes |
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EA033755B1 (ru) | 2019-11-22 |
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KR20160124818A (ko) | 2016-10-28 |
ES2681801T3 (es) | 2018-09-17 |
CN106029841A (zh) | 2016-10-12 |
EP3110921A1 (en) | 2017-01-04 |
CN106029841B (zh) | 2018-09-04 |
JP2017510673A (ja) | 2017-04-13 |
WO2015128019A1 (en) | 2015-09-03 |
US20170009156A1 (en) | 2017-01-12 |
SG11201606524RA (en) | 2016-09-29 |
US10358612B2 (en) | 2019-07-23 |
KR102374847B1 (ko) | 2022-03-16 |
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