CN1127480A - 催化蒸馏结构物 - Google Patents
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Abstract
公开了一种催化蒸馏结构物(10),经有许多用惰性间隔元件(24)分开的、竖直分布的装催化剂的元件(12)。每一装催化剂的元件(12)有两层气体可渗透材料(18、20)如金属丝网,并在有规则的间隔处(13)连接在一起,构成有许多小袋(22)分布在表面的单板(12)。颗粒催化剂(26)分布在小袋(22)中。小袋(22)内的催化剂(26)提供了一个进行催化反应的反应区,而气体可渗透板(18、20)提供了进行分馏的传质表面。间隔元件(14)用来改变催化剂的密度和装量。
Description
发明背景发明领域
本发明总的来说涉及一种结构物,该结构物起反应催化剂和蒸馏传质表面的双重作用。更具体地说,本发明涉及一种装有固体颗粒催化剂的固定蒸馏结构物。相关领域
同时进行反应和产物与反应物分离已采用了一段时间,大家已公认了它的优点。在U.S.4232177、4307254、4336407、4504687、4918243和4978807(醚化);4242530(二聚);4982022(水合);4447668(分解)和4950834、5019669(芳烃烷基化)中公开了同时进行反应和蒸馏的一些应用实施例。
已提出了几种不同的催化蒸馏结构物。例如参见U.S.4302356和4443559,其中将颗粒催化剂装在用去雾器金属丝绕制的织物带制作的小袋中,构成催化蒸馏结构物,U.S.4731229公开了用波纹元件和带的填料构成催化剂构件。最近改进了高效填料用来装填催化剂,如U.S.5073236公开的那样。在后一专利中,将中间装有催化剂的两块平行的气体渗透板构成的结构物竖直安装在塔内,与装有催化剂的另一对板直接相邻。装有催化剂的填料板当装入塔内时,在某些情况下可能得到太致密的催化剂床层,从而使停留时间增加,超过对于一定反应所需的的停留时间。本发明的一个优点在于,在某些实施方案中流体可在塔内得到更大的流动性。本发明的另一优点是,该催化蒸馏结构物比背景技术的催化蒸馏结构物有更好的蒸馏特性。本发明的特征在于,用本发明的结构物时可使用较少的催化剂。
发明综述
本发明通过用含有惰性元件的间隔元件将至少一对装有催化剂的相邻元件分开,得到一种更通用的体系。例如,间隔元件可为一种平板(气体可渗透的或实心的),一种装有惰性颗粒的元件(类似于装催化剂的元件)或一种空的类似于装催化剂的元件。通过改变间隔元件的数目,可在塔内装入所需数量的催化剂,同时使用标准的装催化剂的元件。在一实施方案中,可将催化元件间隔开,在一些结构物之间或在所有结构物之间留下空隙。
如果希望沿塔径有连贯流动特性,间隔元件可与用类似大小和形状的惰性填料代替颗粒催化材料的装催化剂的元件相同。另外,为了得到另外的流动特性可简单的去掉催化剂或其他填料。
附图的简单说明
图1是表示本发明装催化剂的元件和间隔元件的结构物的部分横截面俯视图。
图2是图1的一个催化元件的侧视图。
图3是本发明一个包装元件的横截面图。
图4是本发明的装有颗粒材料的包装元件。
图5是有许多间隔开的催化元件的结构物。
图6是仅有一对相邻间隔的许多催化元件。
图7是相邻包装单元彼此接触和相连的许多包装物。
图8是其中装有本发明的结构物的反应蒸馏塔的部分侧视图。
优选实施方案的描述
在本发明中,催化结构物由用一种或多种以下布置的至少两个催化元件组成。
A.间隔物
B.与选自以下的惰性元件连接
1.包装元件
2.非催化元件
3.平板(气体渗透的或不渗透的)
优选的是,催化结构物在上述布置中含有许多催化元件。例如,在如图6所示的一个优选的实施方案中,催化结构物由两组用间隔物分离的连接的催化元件组成。在图5所示的另一优选的实施方案中,在结构物中有许多催化元件,彼此用间隔物分开,以致没有连接的催化元件以及相邻的催化元件不相互接触。这两种布置都优于US5073236中所示的结构物,因为它们在催化结构物内有更大的间隙。在许多应用场合,有连接催化元件的致密结构物有一屏障,实际效果很象颗粒催化材料的填料床层,其结果有高的填料塔压降。
但是,图7所示的催化结构物提供了一种更紧密的装填,但它与背景技术有重大的区别。所示的一些包装物没有任何颗粒材料和/或装有惰性颗粒材料。空的填料不致密,由于有许多空隙和表面,因此有极好的蒸馏特性。惰性元件是装有惰性颗粒材料的包装物,惰性颗粒材料的大小可与催化颗粒材料相同,或小于或大于催化颗粒材料。惰性元件具有催化元件所有相同的水力学特性,但降低了催化反应。在催化蒸馏,也称为反应蒸馏中(U.S.5019669),催化反应常常是可逆反应。因此,通过减少反应元件而保持蒸馏元件,可得到催化蒸馏更高程度的分离。换句话说,通过将惰性元件分散在催化元件之间,得到突出分馏作用的结构物,而在该体系中,作为一个整体来说,由于有许多催化结构物装在塔内,它仍保持了反应的推动力。
在任一给定的塔中催化剂量的减少可能对于催化蒸馏的动力学特性和上述改进的蒸馏特性的影响不大。
通常用塑料带或金属带,在每组元件的上下两端将催化元件和非催化元件结合在一起,构成结构物。在希望有间隔的场合下,将有框架性质的间隔物放在要分开的元件之间。
术语包装物用来说明连接构成装颗粒催化材料和颗粒惰性材料的容器的波纹板。波纹板可编织连接、卷边连接和弯曲连接。波纹板以平行于一共同轴的方式安装,并在板之间有空的通道,用于流体流的分布和分馏。
在每一板上的波纹和通道以及颗粒材料的小袋以与共同轴有一倾斜的取向排列,而与相邻板的波纹成相反方向。
为了详细说明优选实施方案,读者可参考附图,在附图中,为了便于参考,同样的元件有相同的编号。
在图1中,给出本发明的催化结构物10的俯视图,该结构物由许多沿一共同轴排列的催化元件12组成,每一催化元件用非催化的板14分开,该板可为可渗透的或不渗透的。这些元件用带16固定在一起。在图2中,表示催化元件有两层气体可渗透的金属丝网,它们按有规则的间隔连接形成小袋22,颗粒催化剂可装在小袋中,或者可用空的小袋,如下文所述的。这一连接可通过将两层在连接点13处交织在一起的方法来实现。具体的实施方案涉及双层编织法,在该法中丝网被编织为有用编织构成整体的小袋的双层编织型式。另外,如图3所示,小袋斜着穿过元件表面编织。元件的外观呈波纹人字形(见图3和4)。
在图7中,表示了几个用间隔物24分开的装催化剂的元件12的视图。在这一优选实施方案中,每一催化元件12都有非催化蒸馏结构物24分开,非催化蒸馏结构物24或是图3的空的小袋结构物,或是装有颗粒材料26的小袋,如图4。装颗粒材料的小袋元件可装有催化颗粒材料或惰性颗粒材料。这些元件看上去是相同的,仅仅颗粒材料的性质不同。图6表示一结构物类似的视图,其中所有的小袋元件都是催化元件12,两部分连接的催化元件用间隔物28分开,以致贯穿整个催化结构物,催化元件是不连接的。
在图5中,表示一组催化蒸馏结构物已放置在蒸馏塔反应器中。催化元件10被间隔元件28分开,并用带16将整个元件结合成一组。用带结合的所有元件竖直排放在塔中。
现在参看图8,表示装有一组图7所示类型的催化蒸馏结构物10的蒸馏塔反应器100。优选的是,水平的小袋状装催化剂的元件这样排放在一起,一元件的小袋与下一相邻元件的小袋呈90°,这些元件无论是空的(没有颗粒材料)、还是用颗粒催化剂装填的或是用惰性材料装填的,以致流体流沿通道与塔的竖直轴成一定角度流动。这一特征在图8中说明,在那里上下塔段的斜线表示波纹板的背。
对于流体流的分馏来说,结构物10起规整填料的作用,同时用于流体流的催化反应。在典型的安装中,许多结构物10在塔内重叠在另一结构物的顶部,并支撑在适合的支持结构物上。每一竖行结构物这样排放,在同行中其板18和20平行于其他的板,而在相邻竖行中,相对于板面成90°。在图8中说明了三个竖直间隔行的板的相对取向。结构物10特别适用于产物可用蒸馏分离的液相反应,并且在液相非均相催化剂体系中气/液逆流接触。在操作中,一股或多股流体流送入塔100,其液体通过结构物10下降,而蒸汽通过结构物上升。液体流在通道32中沿板18和20表面流动,并通过催化剂床层30和元件24中的惰性床层。在结构物10顶端可使用液体分配器,使液体物按需要优选进入通道32或催化剂床层30。
催化剂床层30构成催化反应段,用于下降的液体流催化反应。同时,通过流体流的分馏形成蒸汽相,它优选通过通道32向上流动,以便与下降的液体流混合。液相与蒸汽相之间的传质主要发生在板18和20的表面上以及在催化剂的表面上。
当上升的蒸汽与下降的液体接触时,液相和蒸汽相在通道32中发生混合。液相通过可渗透元件18和20,从通道进入催化剂床层22进行催化反应,或进入元件24的惰性床层进一步进行分离。反应产物同样从催化剂床层流进通道,在那样进行初步蒸馏。
应当理解,一组以上催化蒸馏结构物可按需要的不同高度排放在塔中。另外,可将一组或多组催化蒸馏结构物以任何有效的方式支撑在塔内。例如,可用惰性的蒸馏填料如拉西环等支撑和分开多组催化蒸馏结构物。
Claims (20)
1.一种放置在蒸馏塔反应器中的催化蒸馏结构物,它包括:
(a)多个沿共同轴排列的催化元件,并且每一催化元件包括:
(i)每隔一定距离连接在一起的第一层和第二层气体可渗透材料,构成有多个小袋布置在其上的板;以及
(ii)放置在所述小袋中的颗粒催化剂;以及
(b)放置在所述的许多催化元件的至少两个相邻的催化元件之间的惰性间隔元件。
2.根据权利要求1的催化蒸馏结构物,其中所述的惰性间隔元件有间隙。
3.根据权利要求1的催化蒸馏结构物,其中所述的惰性间隔元件包括一平板状构件。
4.根据权利要求3的催化蒸馏结构物,其中所述的平板状构件是气体可渗透的。
5.根据权利要求3的催化蒸馏结构物,其中所述的平板状构件是气体不渗透的。
6.根据权利要求1的催化蒸馏结构物,其中所述的惰性间隔元件有含第三和第四层每隔一定距离连接在一起的气体可渗透材料的波纹板,构成许多分布在所述的板上空的小袋。
7.根据权利要求6的催化蒸馏结构物,其中所述的可渗透材料色括金属丝网。
8.根据权利要求6的催化蒸馏结构物,其中所述的小袋的一部分有放置在其中的惰性颗粒物。
9.根据权利要求1的催化蒸馏结构物,其中所述的小袋斜向穿过所述的板分布。
10.根据权利要求1的催化蒸馏结构物,其中所述的气体可渗透材料是一种编织的金属丝网。
11.根据权利要求1的催化蒸馏结构物,其中所述的惰性间隔元件包括一个金属丝网的单板。
12.根据权利要求1的催化蒸馏结构物,其中所述的惰性间隔元件放置在所述的多个催化元件的两两之间。
13.根据权利要求12的催化蒸馏结构物,其中所述惰性间隔元件有间隙。
14.根据权利要求12的催化蒸馏结构物,其中所述的惰性间隔元件包括一种平板状构件。
15.根据权利要求14的催化蒸馏结构物,其中所述的平板状构件是气体可渗透的。
16.根据权利要求14的催化蒸馏结构物,其中所述的平板状构件是气体不可渗透的。
17.根据权利要求12的催化蒸馏结构物,其中所述惰性间隔元件包括一块板,该板包括每隔一定距离连在一起的第三和第四层气体可渗透材料从而形成布置在所述板上的多个小袋。
18.根据权利要求17的催化蒸馏结构物,其中所述小袋的一部分是空的。
19.根据权利要求17的催化蒸馏结构物,其中所述小袋的一部分有放置在其中的惰性颗粒物。
20.一种用来同时进行反应和从反应物中分离产品的蒸馏塔反应器,包括:
(a)一个垂直放置的容器;
(b)一种布置在其中的催化蒸馏结构物,包括:
(i)多个沿共同轴排列的催化元件且每个元件包括:
(A)每隔一定距离连在一起的第一层和第二层气体可渗透材料,形成有多个小袋布置在其上的板;
(B)放置在所述小袋中的颗粒催化剂;和
(ii)布置在所述多个的催化剂元件的至少两个相邻的催化元件之间的惰性间隔元件。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US075,328 | 1993-06-11 | ||
US08/075,328 US5348710A (en) | 1993-06-11 | 1993-06-11 | Catalytic distillation structure |
US075328 | 1993-06-11 |
Publications (2)
Publication Number | Publication Date |
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CN1127480A true CN1127480A (zh) | 1996-07-24 |
CN1051246C CN1051246C (zh) | 2000-04-12 |
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CN94192878A Expired - Fee Related CN1051246C (zh) | 1993-06-11 | 1994-05-19 | 催化蒸馏结构物 |
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Country | Link |
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US (1) | US5348710A (zh) |
EP (1) | EP0703821B1 (zh) |
JP (1) | JP3589667B2 (zh) |
KR (1) | KR100299275B1 (zh) |
CN (1) | CN1051246C (zh) |
AU (1) | AU674596B2 (zh) |
DE (1) | DE69417556T2 (zh) |
ES (1) | ES2129648T3 (zh) |
RU (1) | RU2165290C2 (zh) |
TW (1) | TW262389B (zh) |
WO (1) | WO1994029010A1 (zh) |
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-
1993
- 1993-06-11 US US08/075,328 patent/US5348710A/en not_active Expired - Lifetime
-
1994
- 1994-05-19 AU AU70949/94A patent/AU674596B2/en not_active Ceased
- 1994-05-19 JP JP50180895A patent/JP3589667B2/ja not_active Expired - Fee Related
- 1994-05-19 CN CN94192878A patent/CN1051246C/zh not_active Expired - Fee Related
- 1994-05-19 KR KR1019950705651A patent/KR100299275B1/ko not_active IP Right Cessation
- 1994-05-19 EP EP94920020A patent/EP0703821B1/en not_active Expired - Lifetime
- 1994-05-19 DE DE69417556T patent/DE69417556T2/de not_active Expired - Fee Related
- 1994-05-19 ES ES94920020T patent/ES2129648T3/es not_active Expired - Lifetime
- 1994-05-19 WO PCT/US1994/005621 patent/WO1994029010A1/en active IP Right Grant
- 1994-05-19 RU RU96102598/04A patent/RU2165290C2/ru not_active IP Right Cessation
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Cited By (4)
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CN104324683A (zh) * | 2014-10-27 | 2015-02-04 | 汤恩旗 | 一种可加工的催化丝网带 |
CN104587945A (zh) * | 2015-01-24 | 2015-05-06 | 福州大学 | 一种催化精馏塔塔内规整催化填料及其制备方法 |
CN105126735A (zh) * | 2015-08-04 | 2015-12-09 | 福州大学 | 一种催化精馏塔塔内催化填料及其制备方法 |
CN106943981A (zh) * | 2017-05-04 | 2017-07-14 | 凯瑞环保科技股份有限公司 | 一种甲醇氧化用的设备 |
Also Published As
Publication number | Publication date |
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DE69417556D1 (de) | 1999-05-06 |
JP3589667B2 (ja) | 2004-11-17 |
US5348710A (en) | 1994-09-20 |
AU674596B2 (en) | 1997-01-02 |
TW262389B (zh) | 1995-11-11 |
KR960703034A (ko) | 1996-06-19 |
ES2129648T3 (es) | 1999-06-16 |
KR100299275B1 (ko) | 2001-10-22 |
DE69417556T2 (de) | 1999-08-12 |
RU2165290C2 (ru) | 2001-04-20 |
JPH09501864A (ja) | 1997-02-25 |
AU7094994A (en) | 1995-01-03 |
CN1051246C (zh) | 2000-04-12 |
EP0703821A4 (en) | 1997-03-05 |
EP0703821B1 (en) | 1999-03-31 |
EP0703821A1 (en) | 1996-04-03 |
WO1994029010A1 (en) | 1994-12-22 |
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