Method and device for the continuous production of polyesters
    214.
    发明申请
    Method and device for the continuous production of polyesters 有权
    连续生产聚酯的方法和装置

    公开(公告)号:US20060009608A1

    公开(公告)日:2006-01-12

    申请号:US10530216

    申请日:2003-09-19

    CPC classification number: C08G63/785 B01J3/006 B01J19/0066 B01J19/18

    Abstract: In the continuous production of polyesters, the esterification/transesterification of dicarboxylic acids or esters of the dicarboxylic acids with diols is performed in at least one reaction stage, the prepolycondensation of the esterification/transesterification product is performed under a vacuum in a reaction stage consisting of a vertical tube, and the polycondensation of the prepolycondensation product is performed in at least one reaction stage. To be able to perform the prepolycondensation in a reaction stage, while at the same time increasing the viscosity of the prepolycondensation product and decreasing the process temperatures, the esterification/transesterification product flowing into the prepolycondensation reactor successively traverses in a free movement under limited heating first at least one first reaction zone formed of an annular channel, is then introduced into the radially outer ring duct of at least one second reaction zone formed of an annular channel divided into a plurality of concentric ring ducts, thereafter is successively passed through the ring ducts to the outlet, and is then introduced into a stirred third reaction zone located at the bottom of the vertical tube.

    Abstract translation: 在聚酯的连续生产中,二羧酸或二醇的酯与二醇的酯化/酯交换在至少一个反应阶段进行,酯化/酯交换反应产物的预缩聚在真空下在由 垂直管,并且预缩聚产物的缩聚在至少一个反应阶段中进行。 为了能够在反应阶段中进行预缩聚,同时增加预缩聚产物的粘度并降低工艺温度,流入预缩聚反应器的酯化/酯交换反应产物在有限加热下自由移动 至少一个由环形通道形成的第一反应区然后被引入至少一个第二反应区的径向外环管道中,该第二反应区由分成多个同心环管道的环形通道形成,之后依次通过环管道 然后引入到位于垂直管底部的搅拌的第三反应区中。

    Production method of biodegradable plastic and apparatus for use in production thereof
    216.
    发明申请
    Production method of biodegradable plastic and apparatus for use in production thereof 失效
    生物降解塑料的生产方法及其生产用的装置

    公开(公告)号:US20050124782A1

    公开(公告)日:2005-06-09

    申请号:US10726652

    申请日:2003-12-04

    Abstract: The present invention provides a production method of biodegradable plastic in which polylactic acid is directly synthesized from lactic acid without employing the conventional route of polylactic acid synthesis from lactic acid via lactide, and apparatus for use in production thereof. In this way, time required for the synthesis of polylactic acid is strikingly shortened and the production cost is reduced. In the production method of biodegradable plastic, polylactic acid, the main component of biodegradable plastic, is obtained by means of condensation polymerization by dehydration of the raw material, lactic acid, under high temperature and reduced pressure in the presence of a metal catalyst.

    Abstract translation: 本发明提供一种生物可降解塑料的制造方法,其中乳酸直接由乳酸直接合成而不使用常规乳酸合成路线,通过丙交酯和其制备方法。 以这种方式,合成聚乳酸所需的时间显着缩短,生产成本降低。 在生物降解塑料的生产方法中,通过在金属催化剂存在下,在高温和减压下脱水原料乳酸,通过缩聚得到聚乳酸,生物降解塑料的主要成分。

    Vacuum processing apparatus and operating method therefor
    217.
    发明授权
    Vacuum processing apparatus and operating method therefor 失效
    真空处理装置及其操作方法

    公开(公告)号:US06886272B2

    公开(公告)日:2005-05-03

    申请号:US10683067

    申请日:2003-10-14

    Abstract: This invention relates to a vacuum processing apparatus having vacuum processing chambers the insides of which must be dry cleaned, and to a method of operating such an apparatus. When the vacuum processing chambers are dry-cleaned, dummy substrates are transferred into the vacuum processing chamber by substrates conveyor means from dummy substrate storage means which is disposed in the air atmosphere together with storage means for storing substrates to be processed, and the inside of the vacuum processing chamber is dry-cleaned by generating a plasma. The dummy substrate is returned to the dummy substrate storage means after dry cleaning is completed. Accordingly, any specific mechanism for only the cleaning purpose is not necessary and the construction of the apparatus can be made simple. Furthermore, the dummy substrates used for dry cleaning and the substrates to be processed do not coexist, contamination of the substrates to be processed due to dust and remaining gas can be prevented and the production yield can be high.

    Abstract translation: 本发明涉及一种具有真空处理室的真空处理装置,其内部必须是干式清洁的,以及一种操作这种装置的方法。 当真空处理室被干洗时,虚设基板通过基板传送装置从设置在空气气氛中的虚设基板存储装置与用于存储待处理基板的存储装置一起转移到真空处理室中, 通过产生等离子体对真空处理室进行干洗。 在完成干洗之后,虚拟衬底返回到虚设衬底存储装置。 因此,仅用于清洁目的的特定机构是不必要的,并且可以使装置的结构简单。 此外,用于干洗的虚拟基板和待加工的基板不共存,可以防止由于灰尘和剩余气体而被处理的基板的污染,并且生产率可以高。

    Treatment plant for refuse derived fuels
    219.
    发明申请
    Treatment plant for refuse derived fuels 失效
    垃圾衍生燃料的处理厂

    公开(公告)号:US20030138748A1

    公开(公告)日:2003-07-24

    申请号:US10203419

    申请日:2002-11-29

    Abstract: Process for incinerating refuse derived fuels to obtain fuel gas therefrom by thermal cracking, comprising the following steps: subjecting the material to deaeration; advancing a bed of material within a vacuum environment insulated from the outside (thermal cracking chamber) and in which a temperature of between 400 DEG C. and 600 DEG C. is maintained by the countercurrent flow of hot gases which lap the material; feeding the material which has passed through the thermal cracking chamber to a reactor in order to be subjected to a temperature of between 1200 DEG C. and 1800 DEG C.; in proximity ot the entry end of said thermal cracking chamber, drawing off the gases generated by the thermal cracking together with the gases which have lapped the bed of material, in order to maintain the thermal cracking chamber under vacuum; feeding the drawn-off gases to the discharge conduit for the gases generated in the reactor; purifying and filtering the gases obtained in this manner for their use as fuel gases.

    Abstract translation: 用于焚烧垃圾衍生燃料以通过热裂解从其中获得燃料气的方法,包括以下步骤:对材料进行脱气; 在与外部绝热的真空环境(热裂解室)内推进材料床,其中温度在400摄氏度到600度之间的温度通过材料的热气流的逆流保持; 将已经通过热裂解室的材料进料到反应器中以进行1200℃至1800℃的温度; 在所述热裂解室的入口附近,将热裂解产生的气体与已经研磨材料床的气体一起排出,以便将热裂解室保持在真空状态; 将排出的气体输送到在反应器中产生的气体的排出管道; 净化和过滤以这种方式获得的气体用作燃料气体。

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