Method for production of acrylic acid and apparatus for production of acrylic acid
    1.
    发明授权
    Method for production of acrylic acid and apparatus for production of acrylic acid 有权
    制备丙烯酸的方法和生产丙烯酸的设备

    公开(公告)号:US07541490B2

    公开(公告)日:2009-06-02

    申请号:US11601417

    申请日:2006-11-17

    IPC分类号: C07C51/16 C07C51/235

    摘要: Chilled coolant is prepared by liquid coolant utilizing the latent heat generated by a gasification of liquefied propylene, for example, and this chilled coolant is used in heat exchangers which are used in a process for production of acrylic acid or acrolein. This method allows effective utilization of the latent heat which used to be discarded and permits a reduction of energy consumption of cooling required separately in the step for production. By recovering the chilled coolant with the liquid coolant, it makes possible to stabilize the gasification of propylene, etc. and consequently stabilize the production of acrylic acid. This invention consists of providing the method for the production of acrylic acid, etc. and the apparatus which make effective use of the latent heat generated in the steps of production.

    摘要翻译: 例如,通过液化丙烯气化产生的潜热的液体冷却剂制备冷冻冷却剂,并且该冷却的冷却剂用于用于生产丙烯酸或丙烯醛的方法中的热交换器。 该方法允许有效利用以前被废弃的潜热,并且可以在生产步骤中单独地降低需要的冷却能量消耗。 通过用液体冷却剂回收冷却的冷却剂,可以稳定丙烯等的气化,从而稳定丙烯酸的生产。 本发明提供了生产丙烯酸等的方法和有效利用在生产步骤中产生的潜热的装置。

    Method for preventing plate type heat exchanger from blockage
    3.
    发明授权
    Method for preventing plate type heat exchanger from blockage 失效
    防止板式换热器堵塞的方法

    公开(公告)号:US06848501B2

    公开(公告)日:2005-02-01

    申请号:US10356428

    申请日:2003-01-31

    摘要: In an apparatus provided with a plate type heat exchanger as a heater and/or a cooler and operated to treat a gas containing an easily blocking substance, a method for preventing the plate type heat exchanger from being blocked is disclosed which is characterized by i) setting the width of a flow path on a plate of the plate type heat exchanger in the apparatus in a range of 6-25 mm and ii) setting the average flow rate of the gas passing the plate type heat exchanger in the apparatus per unit cross-sectional area of the flow path on the plate in the range of 3-15 m/s. In the exchange of heat of an easily blocking substance by the use of a plate type heat exchanger, a method for preventing the plate type heat exchanger from blockage is disclosed which has the plate type heat exchanger provided in the port for introducing a gas containing an easily blocking substance with a gas dispersion plate. This invention, in the heat exchange of an effluent gas emanating from a process for the production of (meth)acrylic acid or an ester thereof or the disposal of the gas, significantly allays blockage of the interior of the plate type heat exchanger.

    摘要翻译: 在设置有作为加热器和/或冷却器的板式热交换器并且被操作以处理含有易阻塞物质的气体的装置中,公开了一种防止板式热交换器被堵塞的方法,其特征在于i) 将设备中板式热交换器的板上的流路宽度设置在6-25mm的范围内,以及ii)将通过板式热交换器的气体的平均流量设置在每单位十字的装置中 板上流路的截面面积在3-15 m / s的范围内。 在通过使用板式热交换器交换容易堵塞物质的热的情况下,公开了一种防止板式热交换器堵塞的方法,其具有设置在用于引入含有 用气体分散板容易地堵塞物质。 本发明在从(甲基)丙烯酸或其酯的制备方法产生的流出气体的热交换或气体的处理中显着地阻止了板式热交换器的内部堵塞。

    Reactor for catalytic gas phase oxidation
    4.
    发明授权
    Reactor for catalytic gas phase oxidation 有权
    催化气相氧化反应器

    公开(公告)号:US06808689B1

    公开(公告)日:2004-10-26

    申请号:US09652209

    申请日:2000-08-30

    IPC分类号: B01J804

    摘要: The temperature distribution of a heating medium in the reactor is allayed and the occurrence of hot spots is repressed. In a shell-and-tube type reactor provided with donut type and disc type baffle plates, reaction tubes are disposed even in the holes formed in the donut type baffle plates and an empty space devoid of a configuration of the reaction tubes is formed at the center of the shell. According to this invention, (meth)acrylic acid and/or (meth)acrolein can be produced at a low energy by catalytic gas phase oxidation of propylene- or isobutylene-containing gas.

    摘要翻译: 反应器中加热介质的温度分布被消除,并且热点的发生被抑制。 在设置有环形型和盘式挡板的管壳型反应器中,反应管甚至设置在形成于环形挡板中的孔中,并且在反应管的形成空间处形成反应管的形状 壳的中心。 根据本发明,通过催化气相氧化含丙烯或异丁烯的气体,可以在低能量下生产(甲基)丙烯酸和/或(甲基)丙烯醛。

    Method for catalytic gas phase oxidation
    5.
    发明授权
    Method for catalytic gas phase oxidation 失效
    催化气相氧化方法

    公开(公告)号:US06613940B1

    公开(公告)日:2003-09-02

    申请号:US09648950

    申请日:2000-08-25

    IPC分类号: C07C5116

    摘要: In the reaction of catalytic gas phase oxidation by means of a shell-and-tube type reactor adapted to circulate a heating medium to the shell of the reactor through the medium of a circulation device connecting an annular conduit connected thereto, a method for the catalytic gas phase oxidation characterized by subjecting a part of the heating medium extracted from the shell of the reactor to heat exchange, introducing the heating medium resulting from the heat exchange into the proximity of a heating medium circulation inlet on the inlet side of the circulation device or the annular conduit on the outlet side of the reactor. The flow rate of the heating medium after the heat exchange is preferred to be in the range of 2-40 vol. % based on the flow rate of the heating medium within the shell of the reactor and the temperature difference of the heating medium at the inlet and the outlet to be in the range of 15-150° C. According to this invention, it is made possible to reduce evenly the hot spots in the reaction tubes, improve the yield of the product aimed at, and implement a reaction of catalytic gas phase oxidation of propylene or isobutylene.

    摘要翻译: 在通过壳管式反应器进行催化气相氧化的反应中,该反应器适于通过连接连接其的环形导管的循环装置的介质将加热介质循环到反应器的壳体,催化剂的方法 气相氧化特征在于使从反应器壳体中提取的一部分加热介质进行热交换,将由热交换产生的加热介质引入循环装置入口侧的加热介质循环入口附近,或 反应器出口侧的环形导管。 热交换后的加热介质的流量优选为2-40体积%。 基于反应器壳体内的加热介质的流量,入口和出口处的加热介质的温度差在15-150℃的范围内。根据本发明,制成 可能均匀地减少反应管中的热点,提高目标产品的产率,并实现丙烯或异丁烯的催化气相氧化反应。

    Shell-and-tube type heat exchanger and method for production of (meth) acrylic acid by use of the exchange
    6.
    发明申请
    Shell-and-tube type heat exchanger and method for production of (meth) acrylic acid by use of the exchange 有权
    壳管型热交换器和通过使用交换生产(甲基)丙烯酸的方法

    公开(公告)号:US20070034363A1

    公开(公告)日:2007-02-15

    申请号:US11584233

    申请日:2006-10-20

    IPC分类号: F28F9/22

    摘要: A shell-and-tube type heat exchanger of the smallest possible length necessary for heat exchange is disclosed which is capable of obtaining uniform distribution of flow of a shell side fluid and substantially eliminating the structural restriction imposed on the shell side. This shell-and-tube type heat exchanger is provided with one annular conduit furnished with not less than two partitions concurrently serving as an expansion joint for introducing and discharging a shell side fluid and allowing the flow path for said shell side fluid to be separated into an introducing part and a discharging part and which comprises a place having no array of heat-transfer tubes in the flow path for said shell side fluid. It prevents the equipment from necessitating an unnecessary enlargement due to the structural restriction on the shell side and enables the shell side fluid to produce a uniform flow.

    摘要翻译: 公开了一种能够获得壳侧流体的均匀流动分布并且基本上消除了对壳体侧面的结构限制的壳体管式热交换器,其具有热交换所需的尽可能小的长度。 这种管壳型热交换器设置有一个环形导管,其具有不少于两个隔板,同时用作用于引入和排出壳侧流体的膨胀接头,并且允许将所述壳侧流体的流动路径分离成 引入部分和排出部分,并且包括在用于所述壳侧流体的流动路径中不具有热传递管阵列的位置。 它防止了由于壳体侧面的结构限制而使设备不必要地增大,并且使得壳侧流体能够产生均匀的流动。

    Vertical heat exchanger
    10.
    发明授权
    Vertical heat exchanger 失效
    立式换热器

    公开(公告)号:US07377307B1

    公开(公告)日:2008-05-27

    申请号:US09705351

    申请日:2000-11-03

    IPC分类号: F28F27/00

    CPC分类号: F28D7/16 F28F9/02 F28F2265/06

    摘要: A vertical heat exchanger is described, which allows efficient elimination of the gas generated therein and efficient removal of the sludge accumulated therein. The vertical heat exchanger has at least part of one end of a vent pipe formed of an upper tube sheet part (an upper cover part in the case of a spiral heat exchanger) and the other end thereof connected outside the heat exchanger to an immediately adjacent fluid passing port passing the same fluid as the vent and/or at least part of one end of a drain pipe formed of a lower tube sheet part (a lower cover part in the case of a spiral heat exchanger) and the other end thereof connected outside the heat exchanger to an immediately adjacent fluid passing port passing the same fluid as the drain.

    摘要翻译: 描述了一种立式热交换器,其允许有效地消除其中产生的气体并有效地去除积聚在其中的污泥。 立式热交换器具有由上管板部(在螺旋形热交换器的情况下为上盖部)形成的排气管的一端的至少一部分,另一端与热交换器外侧连接, 流体通过口通过与排气管相同的流体和/或由下管板部分(在螺旋式热交换器的情况下为下盖部分)形成的排水管的至少一部分,并且其另一端连接 在热交换器外面,与通过与排水管相同的流体的紧邻的流体通过口。