中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

9 records (took 0.021 seconds)

    SUBMICRON PARTICLE REMOVAL FROM GAS STREAMS
    3.
    发明申请
    SUBMICRON PARTICLE REMOVAL FROM GAS STREAMS 审中-公开
    亚微米粒子从气体中去除

    公开(公告)号：WO2017196167A1

    公开(公告)日：2017-11-16

    申请号：PCT/NL2017/050287

    申请日：2017-05-09

    Applicant: STAMICARBON B.V.

    Inventor： HIGGINS, Brian Sayre ,  TATE III, John Marshall ,  YATES, Robert Arthur ,  POMERLEAU, Marcel Julien ,  HEON, Jon Michael ,  DIRKX, Wilfried Marc Renaat ,  COLOMA GONZÁLEZ, Juan

    IPC: B01D47/06 ,  B01D47/10 ,  B01D53/58 ,  C07C273/16 ,  C05C9/00

    Abstract: Disclosed are methods and systems for removing submicron particles from a gas stream, in particular from urea prilling off-gas, wherein a Venturi ejector is used. A method comprises contacting a gas stream containing submicron particles in a Venturi ejector with an injected high velocity scrubbing liquid to provide a pumping action, wherein the scrubbing liquid has an initial velocity of at least 2 m/s and wherein the ratio of scrubbing liquid and gas flow is between 0.0005 and 0.0015 (m³/h) / (m³/h). The disclosure also pertains to a prilling tower having a gas stream treatment system comprising a Venturi ejector at the top of the prilling tower, and to a method of modifying an existing prilling tower.

    Abstract translation: 公开了用于从气流，特别是尿素造粒废气中去除亚微米颗粒的方法和系统，其中使用文丘里喷射器。 一种方法包括使文丘里喷射器中含有亚微米颗粒的气流与注入的高速洗涤液接触以提供泵送作用，其中洗涤液的初始速度为至少2m / s，并且其中洗涤液和 气体流量在0.0005和0.0015（m3 / h）/（m3 / h）之间。 本发明还涉及具有气流处理系统的造粒塔以及改造现有造粒塔的方法，所述气流处理系统包括位于造粒塔顶部的文丘里喷射器。

    UREA PRODUCTION WITH BI-PRESSURIZED SYNTHESIS
    4.
    发明申请
    UREA PRODUCTION WITH BI-PRESSURIZED SYNTHESIS 审中-公开
    双加压合成尿素生产

    公开(公告)号：WO2017171546A1

    公开(公告)日：2017-10-05

    申请号：PCT/NL2017/050196

    申请日：2017-03-30

    Applicant: STAMICARBON B.V.

    Inventor： COLOMA GONZÁLEZ, Juan ,  DIELTJENS, Luc Louis Maria ,  MENNEN, Johannes Henricus

    IPC: C07C273/04 ,  B01J19/24

    Abstract: Disclosed is a urea plant wherein, in deviation from conventional plants, a high-pressure synthesis section is operated with two different pressures. The synthesis section comprises a reactor, which is operated under a first high pressure. The synthesis section also comprises a stripper and a condenser, both operated at substantially the same second high pressure. In accordance with the invention, the first pressure is substantially higher than the second pressure. The disclosed plant particularly comprises a compression unit capable of converting a pressure difference into work, or more specifically, mechanical energy for compression. This compression unit is positioned between a liquid outlet of the condenser and a liquid inlet of the reactor, and in fluid communication therewith. In order to make use of a pressure drop (expansion as a result of a liquid being depressurized), said compression unit is configured to obtain compression energy from one or more events in the urea production process ( i.e. , at one or more points in the urea production plant), at which a loss of energy occurs, such as decompression of a high energy stream. Typically, the compression unit is thereby configured to utilize mechanical energy recovered from a decompression unit positioned downstream of the stripper and upstream of the recovery section.

    Abstract translation: 公开了一种尿素装置，其中与常规装置不同，高压合成段在两种不同的压力下操作。 合成部分包括在第一高压下操作的反应器。 合成部分还包括汽提器和冷凝器，二者均在基本上相同的第二高压下操作。 根据本发明，第一压力显着高于第二压力。 所公开的设备特别包括能够将压力差转换成功的压缩单元，或者更具体地说，包括用于压缩的机械能。 该压缩单元位于冷凝器的液体出口和反应器的液体入口之间并与其流体连通。 为了利用压降（由于液体被减压而引起的膨胀），所述压缩单元被配置为从尿素生产过程中的一个或多个事件获得压缩能量（即， 在尿素生产厂中的一个或多个点），在该点发生能量损失，例如高能量流的减压。 典型地，压缩单元因此被配置成利用从位于汽提器下游和回收段上游的减压单元回收的机械能。

    UREA PRODUCTION WITH BI-PRESSURIZED SYNTHESIS
    9.
    发明公开
    UREA PRODUCTION WITH BI-PRESSURIZED SYNTHESIS 审中-公开

    公开(公告)号：EP3436430A1

    公开(公告)日：2019-02-06

    申请号：EP17718144.3

    申请日：2017-03-30

    Applicant: Stamicarbon B.V.

    Inventor： COLOMA GONZÁLEZ, Juan ,  DIELTJENS, Luc Louis Maria ,  MENNEN, Johannes Henricus

    IPC: C07C273/04 ,  B01J19/24

    Abstract: The invention is directed to a urea plant with a high pressure synthesis section and a recovery section. The high pressure synthesis section comprises a reactor, a stripper and a condenser, wherein the reactor operates at a higher pressure than the stripper and the condenser. The plant further includes a compression unit between the condenser and the reactor. The compression unit utilizes mechanical energy recovered from a decompression unit positioned downstream of the stripper and upstream of the recovery section.

Patent Agency Ranking