CN117337277A - 来自脱丁烷塔的侧物流的环戊二烯的二聚 - Google Patents
来自脱丁烷塔的侧物流的环戊二烯的二聚 Download PDFInfo
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Abstract
一种用于二聚环戊二烯(CPD)的系统和一种用于二聚环戊二烯(CPD)方法,其包括从脱丁烷塔产生富含C6+C7的塔底物物流和富含C5的侧抽,其中富含C5的侧抽和至少一部分富含C6+C7的塔底物物流被引导至二聚塔,在那里CPD被热二聚成二环戊二烯(DCPD)。DCPD比CPD更稳定,因此处理起来更安全。
Description
技术领域
本发明涉及用于本地二聚环戊二烯(CPD)的系统和方法,并且更具体地涉及在乙烯装置中二聚CPD以产生二环戊二烯(DCPD)。
背景
蒸汽裂化也称为热解,是用于从石脑油、液化石油气(LPG)、乙烷、丙烷和/或丁烷原料制备通常称为烯烃的较轻烯烃(例如乙烯)的主要过程。
在传统的蒸汽裂化过程中,将气态或液态烃进料如石脑油、液化石油气或乙烷用蒸汽稀释,并在没有氧气存在的炉中短暂加热。反应中产生的裂化气体产物取决于进料的组成、烃与蒸汽的比例和取决于裂化温度和炉内停留时间。轻质烃进料如乙烷、(多种)液化石油气或轻质石脑油产生富含较轻烯烃的裂化气体物流,包括乙烯、丙烯和丁二烯。较重的烃(全系列和重质石脑油以及其他炼制产物)还产生富含芳香烃和适合包含在汽油或燃料油中的烃的产物,如离开用于烯烃装置的脱丁烷塔的塔底的C5+热解汽油物流,该脱丁烷塔用于将裂化气体物流中的较重质烃与C4烃分离。该热解汽油物流通常包含C5二烯烃,主要是环戊二烯,然后其可以被二聚以制备更稳定的二环戊二烯。
通常,在蒸汽裂化过程中,在需要的情况下,二聚塔安装在脱丁烷塔的塔底物流上,在那里C5二烯烃一主要是环戊二烯-被二聚以制备更稳定的二环戊二烯。这样做可以为了由二环戊二烯制备粘合剂和其他产品,或者简单地为了安全地运输和储存含C5的热解汽油产品。
US 6,258,989 B1号美国专利公开了将包含C5烯烃、C5二烯烃、CPD、DCPD以及苯、甲苯、二甲苯(BTX)的芳族化合物混合物的物流二聚,然后分离C5、C6-C9和C10+以升级分子。该二聚是对来自蒸汽裂化器的脱丁烷的热解汽油物流进行的。更具体地,US 6,258,989号美国专利公开了通过以下步骤处理包含C5烯烃、C5二烯烃、CPD、DCPD和芳族化合物的烃原料:在加热区加热包含CPD、DCPD、C5二烯烃、苯、甲苯和二甲苯的烃原料以将CPD二聚为DCPD,从而形成第一流出物;将第一流出物分离成C6+物流和C5二烯烃物流;将C6+物流分离成C6-C9物流和C10+物流;将C10+物流分离成燃料油物流和DCPD物流;以及加氢处理C6-C9物流,从而形成BTX物流。在一个供选择的实施方案中,通过以下步骤处理烃原料:在加热区加热烃原料以将CPD二聚成DCPD,从而形成第一流出物;将第一流出物分离成C5-C9物流和C10+物流;将C10+物流分离成燃料油物流和DCPD物流;在第一反应区中且在氢气存在下使C5-C9物流与选择性加氢催化剂接触,以氢化C5-C9物流中包含的至少一部分二烯烃、炔烃和苯乙烯,从而形成第二流出物;将第二流出物分离成C6-C9物流和C5烯烃物流;以及在第二反应区中且在氢气存在下使C6-C9物流与加氢脱硫催化剂接触,以使C6-C9物流中包含的至少一部分含硫化合物脱硫,从而形成BTX物流。
在相关的方法和系统中,脱丁烷塔和二聚塔产生富含C6-C7、不含C5的物流,其用于补充用于焦油溶剂化骤冷系统的溶剂。这为处理CPD提供独特的机会。
概述
在一个非限制性实施方案中,提供了一种用于二聚环戊二烯(CPD)的系统,其中所述系统包括脱丁烷塔,所述脱丁烷塔又包括:C4-C7烃进料、C4塔顶物流、富含C6+C7的塔底物物流和富含C5的侧抽,所述系统还包括二聚塔,所述二聚塔又包括:来自富含C5的侧抽的进料、来自至少一部分富含C6+C7的塔底物物流的进料和热解汽油塔底物产物物流。
还以不同的非限制性形式提供了一种用于二聚环戊二烯(CPD)的方法,其中所述方法包括将C3-C7烃物流引至脱丁烷塔,将C3-C7烃脱丁烷从而产生C3+C4塔顶物流、富含C6+C7的塔底物物流和富含C5的侧抽,其中所述方法还包括将富含C5的侧抽和至少一部分富含C6+C7的塔底物物流引至二聚塔,在二聚塔中二聚CPD,和产生塔底物产物物流。
在另一个非限制性实施方案中,提供了一种乙烯装置,其包括如上所述的用于二聚环戊二烯(CPD)的系统。
附图简述
图1是用于二聚环戊二烯(CPD)的方法的示意图,并且更具体地涉及在乙烯装置中二聚CPD以得到二环戊二烯(DCPD)。
详述
至脱丁烷塔48的烃进料58可包含C3或C4至C7烃。由于物流富含C6-C7的塔底物物流46、富含C5的侧抽物流50和塔顶物流62共同包含C3-C7烃,所以烃进料58应包含C4-C7烃,也可能包含C3。
再次参考图1所示的环戊二烯(CPD)二聚系统60和方法的非限制性实施方案,脱丁烷塔48被配置以产生富含C5的侧抽物流50。脱丁烷塔48的运行条件包括塔顶压力独立地为约29psia(200kPa)至约130psia(896kPa),取决于冷凝介质(即制冷剂、冷却水);塔顶运行温度范围独立地为约1°F(-17℃)至约113°F(45℃);且塔底物温度独立地为约180°F(82℃)至约280°F(138℃)。
将理解的是,富含C5的侧抽物流50的位置应当通过脱丁烷塔48的模拟来仔细评估,以确保富含C5的侧抽物流50具有最高浓度的C5范围烃,以便最小化脱丁烷塔48的富含C6-C7的塔底物物流46中的C5范围烃浓度的量。根据该非限制性实施方案,脱丁烷塔48的富含C6-C7的塔底物物流46主要由C6+C7范围的烃组成。
在抽出用于任选的富含C6-C7的焦油溶剂补充物流44的任何必要补充之后,净脱丁烷塔塔底物物流52可以与富含C5的侧抽物流50混合作为至热二聚塔54的进料。热二聚塔54可用于二聚存在于富含C5的侧抽物流50中的环戊二烯和存在于引导至净脱丁烷塔塔底物物流52的富含C6-C7的塔底物物流46的所述部分中的任何环戊二烯,以将CPD二聚成二环戊二烯。该配置可有助于确保合并的二聚的热解汽油56被稳定化,以防止运输和储存中的安全隐患。将来自未使用的富含芳族化合物的塔底物物流46的任何C6+C7分子或任何剩余分子与二聚的热解汽油56共混。
在一个非限制性实施方案中,二聚塔54是热二聚塔。热二聚塔54的运行条件包括独立地从约35psia(241kPa)至约60psia(414kPa)的压力;供选择地独立地从约40psia(276kPa)至约50psia(345kPa)的压力;独立地范围从约200°F(93℃)至约250°F(121℃)的运行温度;供选择地独立地从约210°F(99℃)至约220°F(104℃)的运行温度。
二聚的热解汽油56可进一步被加工以制备粘合产品、树脂、油墨、油漆等。任选地,可将C8-C10蒸汽裂化的石脑油(SCN)物流40与二聚的热解汽油56合并。
在前述说明书中,已经参考其具体实施方案描述了本发明。然而,本说明书应被视为说明性的而非限制性的。例如,预期落入所要求保护的或公开的参数内、但未在具体实施例中具体确定或尝试的脱丁烷塔条件和配置、二聚塔条件和配置以及各种烃物流的组成和量在本发明的范围内。
本发明可以在不存在未公开的要素的情况下实施。另外,本发明可以适当地包括所公开的要素、由所公开的要素组成或基本上由所公开的要素组成。例如,在一个非限制性实施方案中,可以提供
在另一个非限制性形式中,可以另外提供一种用于二聚环戊二烯(CPD)的方法,其中所述方法包括以下、基本上由以下组成或由以下组成:将C4-C7烃物流引至脱丁烷塔,将C4-C7烃脱丁烷从而产生C4塔顶物流、富含C6+C7的塔底物物流和富含C5的侧抽,其中所述方法还包括以下、基本上由以下组成或由以下组成:将富含C5的侧抽和至少一部分富含C6+C7的塔底物物流引至二聚塔,在二聚塔中二聚CPD,和产生塔底物产物物流。
还可提供一种包括用于二聚环戊二烯(CPD)的系统的乙烯装置,其中所述系统包括、基本上由以下组成或由以下组成:脱丁烷塔,所述脱丁烷塔又包括、基本上由以下组成或由以下组成:C4-C7烃进料、C4塔顶物流、富含C6+C7的塔底物物流和富含C5的侧抽,其中所述系统另外包括、基本上由以下组成或由以下组成:二聚塔,所述二聚塔又包括、基本上由以下组成或由以下组成:来自富含C5的侧抽的进料、来自至少一部分富含C6+C7的塔底物物流的进料和热解汽油塔底物产物物流。
整个权利要求书中所使用的词语“包括(comprising)”和“包括(comprises)”应分别解释为“包括但不限于”和“包括但不限于”。
就本文所使用的程度而言,词语“基本上”应指“很大程度上但不完全是所指定的”。
如本文所用,单数形式“一(a)”、“一(an)”和“所述”也旨在包括复数形式,除非上下文清楚地另有说明。
就本文所使用的程度而言,涉及给定参数的术语“约”包括所规定的值并且具有由上下文指定的含义(例如,其包括与给定参数的测量相关的误差程度)。
如本文所使用的,术语“和/或”包括一个或多个相关列出项的任何和所有组合。
Claims (15)
1.一种用于二聚环戊二烯(CPD)的系统,所述系统包括:
脱丁烷塔,其包括:
C4-C7烃进料;
C4塔顶物流;
富含C6+C7的塔底物物流;和
富含C5的侧抽;
二聚塔,其包括:
来自富含C5的侧抽的进料;
来自至少一部分富含C6+C7的塔底物物流的进料;和
热解汽油塔底物产物物流。
2.权利要求1所述的系统,其中所述二聚塔是热二聚塔。
3.权利要求1所述的系统,其中从富含C6+C7的塔底物物流中抽出富含C6-C7的焦油溶剂补充物流,并将余量引导至二聚塔。
4.一种用于二聚环戊二烯(CPD)的方法,所述方法包括:
将C4-C7烃物流引至脱丁烷塔;
将C4-C7烃脱丁烷从而产生:
C4塔顶物流;
富含C6+C7的塔底物物流;和
富含C5的侧抽;
将富含C5的侧抽和至少一部分富含C6+C7的塔底物物流引至二聚塔;
在二聚塔中二聚CPD;和
产生塔底物产物物流。
5.权利要求4所述的方法,其中所述二聚是热二聚。
6.权利要求5所述的方法,其中所述二聚塔运行:
在约200°F(93℃)至约250°F(121℃)的温度下;和
在约35psia(241kPa)至约60psia(414kPa)的压力下。
7.权利要求5所述的方法,其中所述二聚塔运行:
在约210°F(99℃)至约220°F(104℃)的温度下;和
在约40psia(276kPa)至约50psia(345kPa)的压力下。
8.权利要求4所述的方法,其进一步包括从富含C6+C7的塔底物物流中抽出富含C6-C7的焦油溶剂补充物流,并将余量引导至二聚塔。
9.权利要求4所述的方法,其中所述热解汽油塔底物产物物流包含二环戊二烯(DCPD)。
10.权利要求9所述的方法,其进一步包括由所述DCPD制备产品,所述产品选自粘合产品、树脂、油墨、油漆及其组合。
11.通过权利要求4所述的方法制备的二环戊二烯(DCPD)。
12.一种由权利要求11所述的DCPD制备的产品,其中所述产品选自粘合产品、树脂、油墨、油漆及其组合。
13.一种乙烯装置,其包括:
用于二聚环戊二烯(CPD)的系统,所述系统包括:
脱丁烷塔,其包括:
C4-C7烃进料;
C4塔顶物流;
富含C6+C7的塔底物物流;和
富含C5的侧抽;
二聚塔,其包括:
来自富含C5的侧抽的进料;
来自至少一部分富含C6+C7的塔底物物流的进料;和
热解汽油塔底物产物物流。
14.权利要求13所述的乙烯装置,其中所述二聚塔是热二聚塔。
15.权利要求13所述的乙烯装置,其中从富含C6+C7的塔底物物流中抽出富含C6-C7的焦油溶剂补充物流,并将余量引导至二聚塔。
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PCT/US2022/026537 WO2022232273A1 (en) | 2021-04-27 | 2022-04-27 | Dimerization of cyclopentadiene from side stream from debutanizer |
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FR2818637B1 (fr) | 2000-12-21 | 2003-02-07 | Inst Francais Du Petrole | Procede de traitement d'hydrocarbures c4 comportant du butadiene et des composes acetylenique comprenant des etapes de distillation et d'hydrogenation selective |
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TWI529160B (zh) * | 2013-12-24 | 2016-04-11 | Cpc Corp Taiwan | Production method of high purity dicyclopentadiene |
RU2581061C1 (ru) * | 2015-01-20 | 2016-04-10 | Открытое акционерное общество "Нефтяная компания "Роснефть" | Способ получения дициклопентадиенсодержащей фракции из с5 фракции пиролиза |
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US20220340501A1 (en) | 2022-10-27 |
KR20240001215A (ko) | 2024-01-03 |
WO2022232273A1 (en) | 2022-11-03 |
JP2024515990A (ja) | 2024-04-11 |
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EP4330216A1 (en) | 2024-03-06 |
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