Method for separation of p-xylene
    1.
    发明授权
    Method for separation of p-xylene 失效
    对二甲苯分离方法

    公开(公告)号:US06646177B2

    公开(公告)日:2003-11-11

    申请号:US09929385

    申请日:2001-08-14

    IPC分类号: C07C7144

    CPC分类号: C07C7/144 C07C15/08

    摘要: A method for separating p-xylene by separating and recovering only p-xylene from a p-xylene-containing raw material mixture under high-temperature and high-pressure conditions using a zeolite membrane as a separating membrane is provided. The p-xylene partial pressure at the raw material side of the separating membrane is kept at a sufficiently high pressure and the p-xylene partial pressure at the recovery side of the separating membrane is controlled at a pressure which is not higher than the inflection point of p-xylene adsorption curve. This method for separating p-xylene using a zeolite membrane as a separating membrane can secure a sufficient p-xylene permeation amount and has industrial applicability.

    摘要翻译: 提供了一种通过使用沸石膜作为分离膜在高温和高压条件下从含对二甲苯的原料混合物中仅分离和回收对二甲苯来分离对二甲苯的方法。 将分离膜的原料侧的对二甲苯分压保持在足够高的压力下,将分离膜的回收侧的对二甲苯分压控制在不高于拐点的压力 的对二甲苯吸附曲线。 使用沸石膜作为分离膜分离对二甲苯的方法可以确保足够的对二甲苯渗透量并具有工业实用性。

    Honeycomb type gas separating membrane structure
    2.
    发明授权
    Honeycomb type gas separating membrane structure 有权
    蜂窝式气体分离膜结构

    公开(公告)号:US06461406B1

    公开(公告)日:2002-10-08

    申请号:US09667930

    申请日:2000-09-22

    IPC分类号: B01D5322

    摘要: A honeycomb type gas separating membrane structure for separating or supplying a specified gas from a mixed gas is provided. The gas separating membrane structure has a honeycomb unitary structure and is a dense body made of a material having a gas separation ability. The honeycomb type gas separating membrane structure does not require a support for supporting a gas separating membrane, increases the membrane area, and reduces costs because its production process is simple.

    摘要翻译: 提供了用于从混合气体中分离或供应特定气体的蜂窝型气体分离膜结构。 气体分离膜结构具有蜂窝单体结构,并且是由具有气体分离能力的材料制成的致密体。 蜂窝式气体分离膜结构不需要用于支撑气体分离膜的支撑,增加膜面积,并且由于其制造过程简单而降低成本。

    Gas separator and method for preparing it
    3.
    发明授权
    Gas separator and method for preparing it 失效
    气体分离器及其制备方法

    公开(公告)号:US5980989A

    公开(公告)日:1999-11-09

    申请号:US602845

    申请日:1996-02-26

    摘要: A gas separator is here disclosed in which a metal for separating a gas is filled into pores opened on the surface of a porous substrate to close them. The thus constituted gas separator can prevent a material gas from leaking into a purified gas. A method for preparing the gas separator is also disclosed which comprises an activation step of immersing the porous substrate having a pair of surfaces in a solution containing an activated metal, while a pressure difference is set between the pair of surfaces, and a chemical plating step of filling the metal for separating the gas into the pores opened on the surface of the porous substrate to close these pores by chemical plating.

    摘要翻译: PCT No.PCT / JP94 / 01046 Sec。 371日期1996年2月26日 102(e)日期1996年2月26日PCT提交1994年6月28日PCT公布。 出版物WO96 / 00608 日本1996年1月11日这里公开了一种气体分离器,其中用于分离气体的金属被填充到在多孔基材的表面上开口的孔中以封闭它们。 这样构成的气体分离器可以防止原料气体泄漏到净化气体中。 还公开了一种制备气体分离器的方法,其包括将具有一对表面的多孔基材浸渍在含有活化金属的溶液中的活化步骤,同时在一对表面之间设置压力差,以及化学镀层步骤 填充用于将气体分离成在多孔基材的表面上开口的孔中的金属,以通过化学镀来封闭这些孔。

    NOx sensor
    5.
    发明授权
    NOx sensor 失效
    NOx传感器

    公开(公告)号:US5705129A

    公开(公告)日:1998-01-06

    申请号:US626314

    申请日:1996-04-02

    IPC分类号: G01N27/12 G01N33/00 G01N27/04

    CPC分类号: G01N33/0037 G01N27/12

    摘要: An NOx sensor has the sensor element made of an oxide, the resistance of which is varied in response to an NOx component in a gas to be measured, and a measuring portion for measuring a resistance variation of the sensor element and for detecting an NOx concentration in the gas to be measured. A catalyst is arranged at an upstream side of a flow of the gas to be measured with respect reach to the sensor element, which makes a partial pressure ratio of NO/NO.sub.2 reach to an equilibrium state and removes a CO component from the gas to be measured. A heater for adjusting a temperature is arranged at a position close to the sensor element, which maintains temperatures of the sensor element and the catalyst constant. An O.sub.2 sensor is arranged at a position close to the sensor element so that the measuring portion can detect accurately the concentration of Nox in the measurement gas by reference to the resistance of the sensor element.

    摘要翻译: NOx传感器具有由氧化物制成的传感器元件,其电阻响应待测气体中的NOx成分而变化,测量部分用于测量传感器元件的电阻变化并用于检测NOx浓度 在要测量的气体中。 催化剂被布置在相对于传感器元件的被测量气体的流动的上游侧,这使得NO / NO 2的分压比达到平衡状态并从气体中除去CO成分 测量。 用于调节温度的加热器布置在接近传感器元件的位置,其保持传感器元件的温度和催化剂的恒定。 O2传感器布置在靠近传感器元件的位置,使得测量部分可以参考传感器元件的电阻精确地检测测量气体中的Nox的浓度。

    Connected body comprising a gas separator and a metal, and apparatus for
separating hydrogen gas from a mixed gas
    6.
    发明授权
    Connected body comprising a gas separator and a metal, and apparatus for separating hydrogen gas from a mixed gas 失效
    包括气体分离器和金属的连接体,以及用于从混合气体中分离氢气的装置

    公开(公告)号:US5518530A

    公开(公告)日:1996-05-21

    申请号:US321894

    申请日:1994-10-14

    摘要: A connected body including a gas separator 10 and metallic members 21 and 22, each of which has a partly oxidized surface to be reliably connected with the gas separator. The gas separator includes a ceramic substrate 11 and a gas separation membrane 12 to be coated onto substrate 11. The substrate 11 is porous so that a gas molecule can pass therethrough, and gas separation membrane 12 is connected with metallic members 21 and 22 by a glass 15 having a thermal expansion coefficient of 5.0-8.0.times.10.sup.-6 /.degree.C. Glass 15 contacts with metal supporters 21 and 22 with a contact angle of 90.degree. or less. The connected body of a gas separator and metallic supporters and an apparatus for separating hydrogen gas from a mixed gas display excellent durability and are free from leakage at the joints during the separation of hydrogen gas at high temperatures and under high pressure.

    摘要翻译: 连接体,包括气体分离器10和金属部件21和22,每个金属部件具有部分氧化的表面以与气体分离器可靠地连接。 气体分离器包括陶瓷基板11和要涂覆到基板11上的气体分离膜12.基板11是多孔的,使得气体分子可以通过,气体分离膜12通过一个金属部件21和22与金属部件21和22连接 玻璃15的热膨胀系数为5.0-8.0×10 -6 /℃。玻璃15与接触角为90°以下的金属支撑体21,22接触。 气体分离器和金属支撑体的连接体和用于从混合气体中分离氢气的装置显示出优异的耐久性,并且在高温和高压下氢气分离期间在接头处没有泄漏。

    Silicon nitride sintered bodies and a method of producing the same
    10.
    发明授权
    Silicon nitride sintered bodies and a method of producing the same 失效
    氮化硅烧结体及其制造方法

    公开(公告)号:US4818733A

    公开(公告)日:1989-04-04

    申请号:US28724

    申请日:1987-03-23

    IPC分类号: C04B35/584 C04B35/58

    CPC分类号: C04B35/584

    摘要: A silicon nitride sintered body having high oxidation resistance and high-temperature strength is produced by starting from silicon nitride powder adjusted so as to have an oxygen content of 4.5-7.5 wt % as converted into SiO.sub.2. The sintered body has a molar ratio of metal ion (M) to oxygen ion (O) within a range of M:O=1.2.about.1:3 and contains no crystal of YSiO.sub.2 N form.

    摘要翻译: 通过从被调整为氧化物含量为4.5-7.5重量%的氮化硅粉末开始转化为SiO 2,制备具有高耐氧化性和高温强度的氮化硅烧结体。 该烧结体在M:O = 1.2DIFFERENCE 1:3的范围内具有金属离子(M)与氧离子(O)的摩尔比,并且不含YSiO2N晶体。