Apparatus and process for monitor and control of an ammoxidation reactor with a fourier transform infrared spectrometer

    公开(公告)号:US06607447B2

    公开(公告)日:2003-08-19

    申请号:US09945464

    申请日:2001-08-30

    IPC分类号: G01N3508

    摘要: The present invention is a method and an apparatus for identifying and quantifying components in an effluent stream from an ammoxidation reactor, the apparatus comprising a microprocessor; and a Fourier Transform infrared spectrometer having a sample cell through which may flow a portion of the effluent stream, an infrared source to emit infrared radiation and pass the infrared radiation through the effluent stream, an infrared detector to detect transmitted infrared radiation at the selected infrared wavelengths and to generate absorbance data due to absorbance of the infrared radiation by the components, wherein each of the components absorbs infrared radiation at one or more of the infrared wavelengths, and an output apparatus to provide the absorbance data to the microprocessor; wherein the microprocessor is programmed to identify and quantify each of the plurality of components based upon the absorbance data and calibration data, the calibration data being obtained from recovery run analyses and calibration analyses in the sample cell. The method may be applied to utilize the apparatus to provide real-time control of the operation of an ammoxidation reactor, based on the analytical results obtained by the FT-IR spectrometer and the calibration model developed therefor.

    Ammoxidation of a mixture of alcohols to a mixture of nitriles to acetonitrile and HCN
    25.
    发明授权
    Ammoxidation of a mixture of alcohols to a mixture of nitriles to acetonitrile and HCN 有权
    将醇的混合物氨腈化为腈与乙腈和HCN的混合物

    公开(公告)号:US06204407B1

    公开(公告)日:2001-03-20

    申请号:US09517404

    申请日:2000-03-02

    IPC分类号: C07C25300

    摘要: A process for increasing the yield of one or both co-products HCN and acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a mixture comprising one or more alcohols selected from crude methanol, crude ethanol or crude propanol, ammonia and air into a reaction zone containing an ammoxidation catalyst, reacting the hydrocarbon, alcohol, ammonia and oxygen over said catalyst at an elevated temperature to produce acrylonitrile, hydrogen cyanide and acetonitrile, and recovering the acrylonitrile, hydrogen cyanide and acetonitrile from the reactor.

    摘要翻译: 一种用于提高在制备丙烯腈期间产生的一种或两种共同产物HCN和乙腈的产率的方法,包括引入选自丙烯和丙烷的烃,包含一种或多种选自粗甲醇,粗乙醇 或粗丙醇,氨和空气加入到含有氨氧化催化剂的反应区中,在高温下使烃,醇,氨和氧在所述催化剂上反应,以产生丙烯腈,氰化氢和乙腈,并回收丙烯腈,氰化氢和乙腈 从反应堆。

    Apparatus for monitor and control of an ammoxidation reactor with a fourier transform infrared spectrometer
    28.
    发明授权
    Apparatus for monitor and control of an ammoxidation reactor with a fourier transform infrared spectrometer 失效
    用于使用傅里叶变换红外光谱仪监测和控制氨氧化反应器的装置

    公开(公告)号:US06284196B1

    公开(公告)日:2001-09-04

    申请号:US09282934

    申请日:1999-04-01

    IPC分类号: G06F1546

    摘要: The present invention is a method and an apparatus for identifying and quantifying components in an effluent stream from an ammoxidation reactor, the apparatus comprising a microprocessor; and a Fourier Transform infrared spectrometer having a sample cell through which may flow a portion of the effluent stream, an infrared source to emit infrared radiation and pass the infrared radiation through the effluent stream, an infrared detector to detect transmitted infrared radiation at the selected infrared wavelengths and to generate absorbance data due to absorbance of the infrared radiation by the components, wherein each of the components absorbs infrared radiation at one or more of the infrared wavelengths, and an output apparatus to provide the absorbance data to the microprocessor; wherein the microprocessor is programmed to identify and quantify each of the plurality of components based upon the absorbance data and calibration data, the calibration data being obtained from recovery run analyses and calibration analyses in the sample cell. The method may be applied to utilize the apparatus to provide real-time control of the operation of an ammoxidation reactor, based on the analytical results obtained by the FT-IR spectrometer and the calibration model developed therefor.

    摘要翻译: 本发明是用于识别和定量来自氨氧化反应器的流出物流中的组分的方法和装置,该装置包括微处理器; 和傅里叶变换红外光谱仪,其具有样品池,通过该样品池可以流出一部分流出物流,红外源发射红外辐射并使红外辐射通过流出物流;红外检测器,用于检测所选红外线处的透射红外辐射 并且由于由所述部件的红外辐射的吸收而产生吸光度数据,其中每个部件吸收一个或多个红外波长的红外辐射,以及输出装置向微处理器提供吸光度数据; 其中所述微处理器被编程为基于所述吸光度数据和校准数据来识别和量化所述多个部件中的每一个,所述校准数据是从所述样品池中的恢复运行分析和校准分析获得的。 基于由FT-IR光谱仪获得的分析结果及其开发的校准模型,该方法可以应用于利用该装置来提供氨氧化反应器的操作的实时控制。

    Process for the manufacture of acrylonitrile and methacrylonitrile
    29.
    发明授权
    Process for the manufacture of acrylonitrile and methacrylonitrile 失效
    制备丙烯腈和甲基丙烯腈的方法

    公开(公告)号:US5175334A

    公开(公告)日:1992-12-29

    申请号:US806959

    申请日:1991-12-12

    摘要: Olefins such as propylene and isobutylene are converted to the corresponding unsaturated nitriles, acrylonitrile, and methacrylonitrile, respectively, by reacting a mixture of the olefin, ammonia, and molecular oxygen-containing gas in the presence of a catalyst containing the oxides of bismuth, molybdenum, iron, nickel and magnesium, at least one element selected from the group comprising potassium and cesium, and optionally one element selected from the group comprising cobalt, phosphorus, manganese, tellurium, sodium, cerium, chromium, antimony and tungsten wherein the sum of cesium and potassium is at least 0.1 to 0.4

    摘要翻译: 烯烃如丙烯和异丁烯分别通过在含有铋,钼的氧化物的催化剂存在下使烯烃,氨和含分子氧的气体的混合物反应转化为相应的不饱和腈,丙烯腈和甲基丙烯腈 ,铁,镍和镁,选自钾和铯的至少一种元素,以及任选的一种选自钴,磷,锰,碲,钠,铈,铬,锑和钨的元素,其中, 铯和钾为至少0.1至0。