CN1052746C - 油田井口汽中无分离轻烃的综合深加工工艺 - Google Patents

油田井口汽中无分离轻烃的综合深加工工艺 Download PDF

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CN1052746C
CN1052746C CN94113298A CN94113298A CN1052746C CN 1052746 C CN1052746 C CN 1052746C CN 94113298 A CN94113298 A CN 94113298A CN 94113298 A CN94113298 A CN 94113298A CN 1052746 C CN1052746 C CN 1052746C
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air speed
reaction
light hydrocarbon
oligomerization
unreacted
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CN1110305A (zh
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高林
赵明芳
李磊
唐世荣
李晓波
高学勤
赵洪
伊夏提
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Turpan Hami Oil Exploration And Development Battle Command
Xinjiang Technical Institute of Physics and Chemistry of CAS
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Turpan Hami Oil Exploration And Development Battle Command
Xinjiang Technical Institute of Physics and Chemistry of CAS
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Abstract

本发明涉及石油井口汽中无分离轻烃的综合深加工工艺,其主要是首先将轻烃混合物脱氢处理后进入高选择性催化低聚反应得低聚物,再将低聚物与未反应的烯烃进行闪蒸、分离,分离出的未反应物经过压缩后进入第二次高选择性催化低聚反应器中反应即可得产物汽柴油,剩余未反应物再回程继续反应。该工艺操作简单,投资少,便于推广应用,适应于任何条件的油田,从而改变了传统的处理井口轻烃的工艺流程方案。

Description

油田井口汽中无分离轻烃的综合深加工工艺
本发明涉及石油化工领域,轻烃深加工
本发明主要是针对油田生产中,井口伴生天然气所含的除干气以外成份的处理。以往在处理除干气以外的成份时,首先要对其进行分离,以分离出不同的组份如碳三、碳四、碳五等及其相应的异物体之后对于不同组份分别进行加工处理。在分离操作时,由于受到环境条件和设备的限制,特别是对于环境条件差的油田,受到天然气集输和暂储条件的限制,进行分离后的加工是一大难题,而且这种分离加工处理费工、费时,投资大,推广应用不便。本发明针对目前油田井口汽中分离轻烃加工中存在的难题,特研究出一种油田井口汽中无分离轻烃的综合深加工工艺,该工艺不经过分离将混合物料直接进行脱氢处理后,经过第一次高选择性低聚催化反应,再经过第二次的高选择性低聚催化处理;可分别得到低聚油品汽柴油,未反应产物可再次回程继续反应。该工艺操作简单,投资少,有利于推广应用。
本发明的目的在于,设计的油田井口汽中无分离轻烃的综合深加工工艺,对油田井口伴生天然气中所含的除干气以外,天然气组份中有价值的部分不经分离而直接将混合物料→脱氢反应→高选择性低聚反应→未反应物料再次高选择性低聚反应后稍事分离即可得到低聚油品和汽柴油,该工艺操作简单,投资少,适应于任何条伴的油田处理,从而改变了传统处理井口轻烃的工艺。
本发明所述的油田井口汽中无分离轻烃的综合深加工工艺,是改变传统的轻烃处理先分离后处理的工艺流程,将井口伴生天然气所含的除干气以外轻烃成份,不经分离直接将混合物料进行脱氢处理,处理后的物料,经过高选择性低聚催化反应以得到较高性能产物,其分子量分布窄,并且组成单一的聚烯烃产品聚合油,然后将剩余的烯烃再经过一次高选择性低聚催化处理即可得到汽柴油,该汽柴油的特点是辛烷值很高,可作汽油生产的调合馏份,也可也可直接使用。未反应物料仅剩余部分烷烃再回程继续反应。
本发明所述的油田井口汽中无分离轻烃的综合深加工工艺,其主要是首先将轻烃混合物料进入脱氢反应器中进行脱氢反应,所得产物进入高选择性催化低聚反应器中进行催化反应得低聚物,再将所得低聚物与未反应的烯烃进行闪蒸、分离;分离出的未反应物经压缩后进入第二次高选择性催化低聚反应器中进行低聚反应即得产物汽柴油;剩余未反应的部分产物回程继续反应。在整个反应过程中,各步骤的条件为:脱氢反应是在温度500-700℃,压力0.05-0.20MPa,空速1-5h-1(液相体积空速);催化低聚反应是在温度5-100℃,压力0.05-2.50MPa,空速0.5-4.0h-1(液相体积空速);闪蒸是在温度10-200℃,压力0.01-0.50MPa;第二次低聚反应是在温度50-250℃,压力0.8-3.0MPa,空速0.5-4.0h-1(液相体积空速)。
本发明所述的油田井口汽中无分离轻烃的综合深加工工艺,在混合物脱氢、高选择性低聚反应之后,其产物的分子量在100-2000范围内任意调定,产物分子量分布δ=(0.3-0.1)±0.2。然后低聚产物与未反应的烯烃在0.01-0.50MPa压力下,10-200℃的温度下进行闪蒸,很容易将产物与未反应物分离,分离出来的未反应物,经压缩后进入第二次高选择性低聚反应器中在温度50-250℃,压力0.8-3.0MPa,空速0.5-4.0h-1件下进行低聚反应,以生产出汽柴油,未反应物经简单分离再回程继续反应。
实施例1:
将混合物轻烃物料进入装有脱氢应的反应器中在500℃,0.05MPa,1h-1(液相体积空速)的条件下进行脱氢反应,生成烯烃,将产物氢气进行临氢反应物料回送入脱氢反应器;生成的烯烃进入高选择性催化低聚反应器中在5℃、0.05MPa,0.5h-1(液相体积空速)条件下进行催化反应得低聚物,再将低聚物与未反应的烯烃在10℃,0.01MPa条件下进行闪蒸,很容易将产物与未反应物分离,分离出的未反应物经压缩后进入第二次催化低聚反应器在50℃,0.8MPa,0.5h-1(液相体积空速)条件下进入低聚反应,分离即得产物汽柴油。来反应物再回程继续反应。
实施例2:
将混合物轻烃物料进入装有脱氢反应的反应器中在600℃,0.10MPa,3h-1(液相体积空速)的条件下进行脱氢反应,生成烯烃,得产物氢气进行临氢反应物料回送入脱氢反应器;生成的烯烃进入高选择性催化低聚反应器中在60℃、1.50MPa,2.5h-1(液相体积空速)条件下进行催化反应得低聚物,再将低聚物与未反应的烯烃在100℃,0.25MPa条件下进行闪蒸,很容易将产物与未反应物分离,分离出的未反应物经压缩后进入第二次催化低聚反应器在150℃,1.5MPa,2.5h-1(液相体积空速)条件下进入低聚反应分离后即得产物汽柴油,未反应物再回程继续反应。
实施例3:
将混合物轻烃物料进入装有脱氢反应的反应器中在700℃,0.20MPa,5h-1(液相体积空速)的条件下进行脱氢反应,生成烯烃,将产物氢气进行临氢反应物料回送入脱氢反应器;生成的烯烃进入高选择性催化低聚反应器中在100℃、2.5MPa,4.0h-1(液相体积空速)条件下进行催化反应得低聚物,再将低聚物与未反应的烯烃在200℃,0.50MPa条件下进行闪蒸,很容易将产物与未反应物分离,分离出的未反应物经压缩后进入第二次催化低聚反应器在250℃,3.0MPa,4.0h-1(液相体积空速)条件下进入低聚反应分离后即得产物汽柴油,未反应物再回程继续反应。

Claims (2)

1、一种油田井口汽中无分离轻烃的综合深加工工艺,其特征在于,首先将轻烃混合物料进入脱氢反应器中进行脱氢反应,所得产物进入高选择性催化低聚反应器中进行催化反应得低聚物,再将所得低聚物与未反应的烯烃进行闪蒸、分离;分离出的未反应物经压缩后进入第二次催化低聚反应器中进行低聚反应即得产物汽柴油;剩余未反应的部分产物回程继续处理。
2、根据权利要求1所述的油田井口汽中无分离轻烃的综合深加工工艺,其特征在于,脱氢反应是在温度500-700℃,压力0.05-0.20MPa,空速1-5h-1(液相体积空速);催化低聚反应是在温度5-100℃,压力0.05-2.50MPa,空速0.5-4.0h-1(液相体积空速),闪蒸是在温度10-200℃,压力0.01-0.50MPa;第二次低聚反应是在温度50-250℃,压力0.8-3.0MPa,空速0.5-4.0h-1(液相体积空速)。
CN94113298A 1994-12-24 1994-12-24 油田井口汽中无分离轻烃的综合深加工工艺 Expired - Fee Related CN1052746C (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129704A1 (en) * 1983-05-25 1985-01-02 Norton Company Separation of methane rich-gas, carbon dioxide and hydrogen sulfide from mixtures with light hydrocarbons
US4822948A (en) * 1984-12-18 1989-04-18 Institut Francais Du Petrole Self-cooled process for extracting heavy hydrocarbon fractions
EP0553924A1 (en) * 1992-01-27 1993-08-04 Shell Internationale Researchmaatschappij B.V. Process for producing a hydrogen-containing gas

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129704A1 (en) * 1983-05-25 1985-01-02 Norton Company Separation of methane rich-gas, carbon dioxide and hydrogen sulfide from mixtures with light hydrocarbons
US4822948A (en) * 1984-12-18 1989-04-18 Institut Francais Du Petrole Self-cooled process for extracting heavy hydrocarbon fractions
EP0553924A1 (en) * 1992-01-27 1993-08-04 Shell Internationale Researchmaatschappij B.V. Process for producing a hydrogen-containing gas

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