PROCESS AND PLANT FOR THE PRODUCTION OF UREA WITH HIGH CONVERSION YIELD AND LOW ENERGY CONSUMPTION
    72.
    发明申请
    PROCESS AND PLANT FOR THE PRODUCTION OF UREA WITH HIGH CONVERSION YIELD AND LOW ENERGY CONSUMPTION 有权
    具有高转换效率和低能耗的尿素生产工艺和设备

    公开(公告)号:US20020085965A1

    公开(公告)日:2002-07-04

    申请号:US09285649

    申请日:1999-04-05

    CPC classification number: C07C273/04 Y02P20/582

    Abstract: In a process for the production of urea, substantially pure ammonia and carbon dioxide are reacted in a reaction space (1) from which comes out a reaction mixture subjected to stripping (2) to obtain a partially purified mixture sent to a urea recovery section (3, 4, 7, 8). From the recovery section (3, 4, 7, 8) it is obtained a dilute carbamate solution, which is subjected to stripping (9) with recycling of vapors to the reaction space (1) after condensation (6). This process achieves high conversion yield with reduced energy consumption and low implementation costs.

    Abstract translation: 在生产尿素的方法中,基本上纯的氨和二氧化碳在反应空间(1)中反应出来,反应混合物从其中提取(2),得到部分纯化的混合物送到尿素回收部分 3,4,7,8)。 从回收部分(3,4,7,8)获得稀释的氨基甲酸酯溶液,在冷凝后(6)将蒸汽(9)循环蒸发至反应空间(1)。 该方法实现了高转化率,降低了能耗和低的实施成本。

    Process for producing para-xylene
    73.
    发明申请
    Process for producing para-xylene 失效
    生产对二甲苯的方法

    公开(公告)号:US20020065444A1

    公开(公告)日:2002-05-30

    申请号:US09791300

    申请日:2001-02-22

    CPC classification number: C07C15/08 C07C5/2708 C07C7/13 C07C2529/04 C07C15/067

    Abstract: A process and a system for increasing para-xylene production from a C8 aromatic feedstream by coupling at least one xylene isomerization reactor with at least one pressure swing adsorption unit or temperature swing absorption unit to produce a product having a super-equilibrium para-xylene concentration. This product is then subjected to para-xylene separation and purification.

    Abstract translation: 通过将至少一个二甲苯异构化反应器与至少一个变压吸附单元或温度摆动吸收单元联接以产生具有超平衡对二甲苯浓度的产物,从C8芳族原料流增加对二甲苯生产的方法和系统 。 然后将该产物进行对二甲苯分离和纯化。

    Purification process
    74.
    发明申请
    Purification process 失效
    净化过程

    公开(公告)号:US20020060170A1

    公开(公告)日:2002-05-23

    申请号:US09977246

    申请日:2001-10-16

    CPC classification number: C10G25/05 C10G25/00 C10G25/12

    Abstract: The present invention provides apparatus and a process capable of reducing the sulphur content of the gasoline product resulting from the cracking of a high molecular weight hydrocarbon feed comprising sulphur which comprises at least three concurrent steps: (a) passing input fluid comprising pollutant through at least one adsorber to produce a polluted adsorber and a purified fluid stream (of reduced pollutant content), which leaves the adsorber, stopping the flow into said adsorber to leave residual fluid therein, and separating said residual fluid from said adsorber to leave the polluted adsorber of reduced residual fluid content, (0) heating a polluted adsorber with a heated regeneration gas to produce a hot adsorher (of reduced polutant content) and cooler regeneration gas (of increased pollutant content), (c) contacting a heated adsorher (of reduced pollutant content) with a regeneration gas (of a lower temperature than that of said adsorber) to produce a cooler adsorber and a warmer regeneration gas, which gas is further heated to produce said heated regeneration gas which is passed to step (0), said process comprising at least 3 adsorbers, at least one of which is being subjected to step (a), at least one different adsorher to step (0) and at least one further different adsorber being subjected to step (c), and after completion of one, step the adsorber produced is subjected to the next step in the cyclic sequence (a)-b)-(c)(a).

    Abstract translation: 本发明提供了能够降低由包含硫的高分子量烃进料裂解产生的汽油产物的硫含量的装置和方法,其包括至少三个并行步骤:(a)至少通过至少包含污染物的输入流体 一个吸附器产生污染的吸附器和一个净化的流体物流(其污染物含量降低),其离开吸附器,停止流入所述吸附器中的流体以在其中留下残余流体,并将所述剩余流体与吸附器分离以离开污染的吸附器 减少残留液体含量,(0)用加热的再生气体加热污染的吸附器以产生热吸附剂(降低的污染物含量)和更冷的再生气体(污染物含量增加),(c)使受热吸附剂 含量),再生气体(比所述吸附器的温度低),以产生较冷的吸附器和wa 再生气体,该气体被进一步加热以产生所述加热的再生气体,该再生气体通过步骤(0),所述方法包括至少3个吸附器,其中至少一个吸附器正在进行步骤(a),至少一个不同的 吸附到步骤(0)和至少一个进一步不同的吸附器进行步骤(c),并且在完成一个步骤之后,将产生的吸附器进行循环(a)-b) - (c )(一个)。

    Pulsed flow preferential oxidation reactor
    75.
    发明申请
    Pulsed flow preferential oxidation reactor 审中-公开
    脉冲流优先氧化反应器

    公开(公告)号:US20020018738A1

    公开(公告)日:2002-02-14

    申请号:US09827258

    申请日:2001-04-05

    Abstract: A multi-stage preferential oxidation reactor for removing carbon-monoxide from a product-gas comprises at least one preferential oxidation reactor stage having a product-gas stream inlet end and a product-gas stream outlet end. A first inlet is provided to introduce the product-gas stream into the preferential oxidation reactor stage, and is located at the product-gas stream inlet end of the preferential oxidation reactor stage. The first inlet is configured with a pulsator for pulsing the flow of the product-gas stream into the preferential oxidation reactor stage. A second inlet is also provided to introduce an oxidant into the preferential oxidation reactor stage. The second inlet is located at the product-gas stream inlet end of the oxidizer preferential oxidation reactor stage. An outlet is provided for removal of the treated product-gas stream from the preferential oxidation reactor stage.

    Abstract translation: 用于从产物气体中除去一氧化碳的多级优先氧化反应器包括至少一个具有产物 - 气流入口端和产物气流出口端的优先氧化反应器级。 提供第一入口以将产物气流引入优先氧化反应器阶段,并且位于优先氧化反应器阶段的产物 - 气流入口端。 第一入口配置有用于使产物气流的流动脉动到优先氧化反应器阶段的脉动器。 还提供第二入口以将氧化剂引入优先氧化反应器阶段。 第二个入口位于氧化剂优先氧化反应器阶段的产物 - 气流入口端。 提供出口用于从优先氧化反应器阶段除去经处理的产物 - 气流。

    Method and apparatus for automatically removing vector unit in DNA base sequence
    76.
    发明申请
    Method and apparatus for automatically removing vector unit in DNA base sequence 失效
    自动去除DNA碱基序列中的载体单位的方法和装置

    公开(公告)号:US20020018736A1

    公开(公告)日:2002-02-14

    申请号:US09785269

    申请日:2001-02-20

    CPC classification number: C12N15/10

    Abstract: An automatic DNA fragment removing method aims at removing a vector unit base sequence, that is, a base sequence in a portion of a vector, with precision from the DNA integrated into the vector and processed in a cloning process, so as to obtain a target DNA fragment in an exact structure. Depending on the vector and the restriction enzyme used for cleaving the vector and generating an object DNA fragment, a retrieval key is generated to retrieve a vector unit from the DNA base sequence obtained as the cloning process. Using the generated retrieval key, the junction between the DNA fragment and the vector unit is specified, and the specified junction and the base sequence outside the junction are automatically removed as the vector unit.

    Abstract translation: 自动DNA片段去除方法的目的是从载体整合到载体中的DNA的一部分中去除载体单元碱基序列,即载体的一部分的碱基序列,并在克隆过程中进行处理,以获得目标 DNA片段的确切结构。 根据用于切割载体的载体和限制性内切酶和产生对象DNA片段,产生检索关键码,以从作为克隆过程获得的DNA碱基序列中检索载体单元。 使用生成的检索键,指定DNA片段和向量单位之间的连接点,并且将结点外的指定连接点和基本序列作为向量单元自动去除。

    Molecular sieve adsorbent-catalyst for sulfur compound contaminated gas and liquid streams and process for its use
    77.
    发明申请
    Molecular sieve adsorbent-catalyst for sulfur compound contaminated gas and liquid streams and process for its use 审中-公开
    用于硫化合物污染的气体和液体流的分子筛吸附剂 - 催化剂及其使用方法

    公开(公告)号:US20020009404A1

    公开(公告)日:2002-01-24

    申请号:US09907975

    申请日:2001-07-18

    Applicant: Zeochem LLC

    CPC classification number: B01J29/08 B01J20/186 B01J29/14 B01J29/16 C10G25/05

    Abstract: An adsorbent-catalyst for removal of sulphur compounds from sulfur compound contaminated gas and liquid feed streams, wherein the adsorbent-catalyst is a synthetic X or Y faujasite with a silica to alumina ratio from 1.8:1 to about 5:1 and wherein 40 to 90% of the cations of the faujasite include transition metals of Groups IB, IIB and VIIB with the balance of the cations being alkali or alkaline earth metals.

    Abstract translation: 一种用于从硫化合物污染的气体和液体进料流中除去硫化合物的吸附剂催化剂,其中所述吸附剂催化剂是二氧化硅与氧化铝之比为1.8:1至约5:1的合成X或Y八面沸石,其中40至 八面沸石的90%的阳离子包括IB,IIB和VIIB族的过渡金属,余量的阳离子是碱金属或碱土金属。

    Apparatus and method for conversion of hydrocarbon feed streams into liquid products
    78.
    发明申请
    Apparatus and method for conversion of hydrocarbon feed streams into liquid products 审中-公开
    将烃进料流转化为液体产物的装置和方法

    公开(公告)号:US20010045375A1

    公开(公告)日:2001-11-29

    申请号:US09766699

    申请日:2001-01-22

    Abstract: Disclosed are apparatus and methods for conversion of hydrocarbon feed streams into liquid products. One embodiment of an apparatus includes a pressure vessel that contains a synthesis gas production device, a synthesis gas conditioning device and a synthesis gas conversion device wherein the synthesis gas production device and the synthesis gas conditioning device are nested within the synthesis gas conversion device. One embodiment of a method includes providing a hydrocarbon feed stream and producing a synthesis gas stream from the hydrocarbon feed stream in a synthesis gas production device. Subsequently, the synthesis gas stream is conditioned by removing heat from the synthesis gas stream through a first hollow body into a reactant feed stream that is then fed into the synthesis gas production device. Finally, the synthesis gas stream is converted to form a liquid product stream.

    Abstract translation: 公开了将烃进料流转化为液体产物的装置和方法。 装置的一个实施例包括含有合成气生产装置,合成气调节装置和合成气转化装置的压力容器,其中合成气生产装置和合成气调节装置嵌套在合成气转换装置内。 方法的一个实施方案包括提供烃进料流并在合成气生产装置中从烃进料流产生合成气流。 随后,通过将来自合成气流的热量通过第一中空体除去进入合成气生产装置的反应物进料流来调节合成气流。 最后,将合成气流转化成液体产物流。

    Catalytic reactor
    79.
    发明申请
    Catalytic reactor 审中-公开
    催化反应器

    公开(公告)号:US20010024628A1

    公开(公告)日:2001-09-27

    申请号:US09761661

    申请日:2001-01-18

    Abstract: A device for treating a medium in a fuel cell system has a reactor with a catalyst-containing region between a first part-chamber of the reactor and a second part-chamber of the reactor. The catalyst-containing region is arranged in the flow path of the medium, so that the medium flows through it. The first part-chamber is surrounded at least partially by the second part-chamber, and the catalyst-containing region is arranged as a partition between the first, inner part-chamber and the second, outer part-chamber. The partition is formed by a nonwoven provided with catalyst material.

    Abstract translation: 用于处理燃料电池系统中的介质的装置具有在反应器的第一部分室和反应器的第二部分室之间具有含催化剂的区域的反应器。 含催化剂的区域布置在介质的流动路径中,使得介质流过它。 第一部分室至少部分地被第二部分室包围,并且含催化剂的区域被布置为在第一内部部分室和第二外部部分室之间的分隔。 隔板由设置有催化剂材料的无纺布形成。

    Closed loop continuous polymerisation reactor and polymerisation process
    80.
    发明申请
    Closed loop continuous polymerisation reactor and polymerisation process 有权
    闭环连续聚合反应器和聚合过程

    公开(公告)号:US20010022951A1

    公开(公告)日:2001-09-20

    申请号:US09778192

    申请日:2001-02-07

    CPC classification number: B01J19/2435 B01J2219/00247 B08B9/055

    Abstract: A closed loop continuous emulsion polymerization apparatus at least comprising a circulation pump, a reactor tube which connects the outlet of the circulation pump to its inlet, at least one feed for supplying raw materials, an outlet, and means for cooling the tube, characterized in that the reactor further comprises an additional tube for by-passing a pig around the circulation pump, a pig receiving station which is in parallel connection with the circulation pump or the reactor tube, and optionally means for directing a pig into the pig receiving station. The invention allows simple removal of the pig from the reactor, afforts great freedom in selecting the type of circulation pump and material and shape of the pig, and enables total control over the launching of the pig substantially independent of the reaction medium flow.

    Abstract translation: 一种闭环连续乳液聚合装置,其至少包括循环泵,将循环泵的出口连接到其入口的反应器管,用于供应原料的至少一个进料,出口和用于冷却管的装置,其特征在于 反应器还包括用于使循环泵周围的猪旁通的附加管,与循环泵或反应器管并联连接的猪接收站,以及用于将猪引导到猪接收站中的任选装置。 本发明允许从反应器中简单地清除猪,从而在选择循环泵的类型以及猪的材料和形状方面具有很大的自由度,并且能够完全控制猪的发射,基本上不依赖于反应介质流。

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