Process for producing optically isotropic pitch
    63.
    发明授权
    Process for producing optically isotropic pitch 失效
    光学各向同性沥青的制造方法

    公开(公告)号:US5387333A

    公开(公告)日:1995-02-07

    申请号:US857613

    申请日:1992-03-25

    申请人: Toshio Tamaki

    发明人: Toshio Tamaki

    CPC分类号: C10C3/002 C10C3/04 D01F9/155

    摘要: An optically isotropic pitch can be obtained by a two-stage heat-treatment which combines a heat treatment with air-blowing under normal pressure with a heat treatment with air-blowing under a reduced pressure. Such a pitch is suitable for using as a raw material for producing carbon fibers or activated fibers.

    摘要翻译: 光学各向同性沥青可以通过两步热处理得到,该热处理将常压下的热处理与空气吹扫在减压下进行空气吹制热处理。 这种沥青适用于生产碳纤维或活性纤维的原料。

    Process for converting acid sludge to intermediate sludge
    64.
    发明授权
    Process for converting acid sludge to intermediate sludge 失效
    将酸性污泥转化为中间污泥的工艺

    公开(公告)号:US5288392A

    公开(公告)日:1994-02-22

    申请号:US879642

    申请日:1992-05-07

    CPC分类号: C10C3/007 C10C3/023 C10C3/04

    摘要: A process for converting the acid sludge produced by waste oil refineries into an acid sludge intermediary which can be used in the production of asphaltic mixtures. The process includes contacting the entire surface area of acid sludge with a pH altering agent such as an aqueous inorganic liquid, and separating the liquid layer from the sludge layer, thereby producing an intermediate sludge having properties which make it suitable for use in asphalt production.

    摘要翻译: 将废油精炼厂生产的酸性污泥转化为可用于生产沥青混合料的酸性污泥中间体的方法。 该方法包括使酸性污泥的整个表面积与pH变化剂如无机水溶液接触,并且将液体层与污泥层分离,从而产生具有适于在沥青生产中使用的性质的中间污泥。

    Method for producing superior quality paving asphalt and product
prepared therefrom
    65.
    发明授权
    Method for producing superior quality paving asphalt and product prepared therefrom 失效
    生产优质铺路沥青及由其制备的产品的方法

    公开(公告)号:US5284509A

    公开(公告)日:1994-02-08

    申请号:US870164

    申请日:1992-04-15

    CPC分类号: C10C3/005 C08L95/00 C10C3/04

    摘要: A process for preparing a paving asphalt cement comprising two steps. In the first step, a high quality paving asphalt precursor, a low quality paving asphalt precursor, a non-paving asphalt precursor or a mixture thereof are catalytically oxidized to form a paving asphalt cement. In the second step, the catalytically oxidized paving asphalt cement is mixed with one or more of a high quality paving asphalt precursor, a low quality paving asphalt precursor, a non-paving asphalt precursor or a mixture thereof.

    摘要翻译: 一种制备铺路沥青胶泥的方法,包括两个步骤。 在第一步中,高质量铺路沥青前体,低质量铺路沥青前体,非铺路沥青前体或其混合物被催化氧化以形成铺路沥青水泥。 在第二步中,将催化氧化的铺路沥青水泥与一种或多种优质铺路沥青前体,低质量摊铺沥青前体,非铺路沥青前体或其混合物混合。

    Sinterable carbon powder and method of its production
    66.
    发明授权
    Sinterable carbon powder and method of its production 失效
    可烧结碳粉及其生产方法

    公开(公告)号:US5283045A

    公开(公告)日:1994-02-01

    申请号:US004248

    申请日:1993-01-14

    CPC分类号: C10C1/00 C04B35/528

    摘要: A carbon powder is disclosed with 40 to 75% by weight QI or more than 90% by weight TI, an optical anisotropy of less than 50% by volume, a start of softening between 200.degree. and 300.degree. C., and an oxygen content of more than 2% by weight, and which can be used for without binding agent the production of shaped carbon bodies. The carbon powder is produced by means of distillation from bituminous product at a maximum of 5 mbars and a final temperature of at least 400.degree. C., grinding of the distillation residue to a particle size of less than 30 .mu.m, and oxidation of the powder into the particle core.

    摘要翻译: 公开了一种碳粉,其具有40至75重量%的QI或大于90重量%的TI,光学各向异性小于50体积%,软化开始在200摄氏度至300摄氏度之间,氧含量 超过2重量%,可用于无粘结剂生产成型碳体。 碳粉通过最大5m巴的沥青产物蒸馏生成,最终温度至少为400摄氏度,蒸馏残渣研磨至小于30(m)的粒度,氧化 的粉末进入颗粒核心。

    Process for the production of bitumens of a high penetration value,
apparatus for carrying it out, and products thus obtained
    67.
    发明授权
    Process for the production of bitumens of a high penetration value, apparatus for carrying it out, and products thus obtained 失效
    用于生产高渗透度的沥青的方法,用于实施的装置和由此获得的产品

    公开(公告)号:US4975176A

    公开(公告)日:1990-12-04

    申请号:US93746

    申请日:1987-07-01

    IPC分类号: C10C3/04

    CPC分类号: C10C3/04

    摘要: The process permits to produce bitumens having a high penetration value by oxidation of base bitumens with small volumes of gaseous oxidizers, preferably air, at a temperature between 170.degree. and 250.degree., preferably 200.degree. C., by turbodispersion of the gaseous phase in the bituminous mass by means of a rapid turbodisperser.By adding appropriate fluxes and operating in the presence of catalysts, the technological characteristics of the end product can be varied until obtaining blends of bitumens that are adapted for new applications.The turbodisperser is provided with an impeller constituted by a plane disk carrying on its periphery a series of teeth made preferably with the active side located on the diameter of the impeller and the angle at the vertex greater than 45.degree..

    摘要翻译: PCT No.PCT / EP86 / 00686 Sec。 371日期1987年7月1日 102(e)1987年7月1日PCT PCT日期为1986年11月27日PCT公布。 公开号WO87 / 03896 日期1987年7月2日。该方法允许通过在170℃至250℃,优选200℃的温度下,用小体积的气体氧化剂(优选空气)将基础沥青氧化,生产具有高渗透值的沥青,通过 通过快速涡流分散器将气相涡轮分散在沥青团块中。 通过添加适当的助熔剂并在催化剂存在下操作,可以改变最终产品的技术特性,直到获得适合新应用的沥青混合物。 涡轮分散器设置有由平面盘构成的叶轮,该平面盘在其周边上承载有优选地具有位于叶轮的直径上的有效侧和顶点处的角度大于45°的一系列齿。

    Process for the production of mesophase pitch

    公开(公告)号:US4904371A

    公开(公告)日:1990-02-27

    申请号:US258301

    申请日:1988-10-13

    申请人: Walter M. Kalback

    发明人: Walter M. Kalback

    CPC分类号: C10C3/002

    摘要: An improved process for producing an anisotropic pitch product suitable for carbon fiber manufacture. A carbonaceous feedstock substantially free of mesophase pitch is heated for a period of time at an elevated temperature while passing an oxidatively reactive sparging gas such as a mixture of oxygen and nitrogen through the feedstock. The oxidatively treated feedstock is then subjected to a heat soak, for a longer period of time in the absence of a sparging gas. Thereafter the heat soaked feedstock is heated at an elevated temperature in the presence of a non-oxidative sparging gas for a time period equal to or less than the heat soak to produce an anisotropic pitch having from 50 to 100% by volume mesophase which is suitable for producing good quality carbon fibers.

    Process for the production of mesophase
    69.
    发明授权
    Process for the production of mesophase 失效
    中间相生产工艺

    公开(公告)号:US4892642A

    公开(公告)日:1990-01-09

    申请号:US298536

    申请日:1989-01-17

    CPC分类号: C10C3/08 C10C3/002 C10C3/04

    摘要: An improved process for producing an anisotropic pitch product suitable for carbon fiber manufacture. A carbonaceous feedstock substantially free of mesophase pitch is heated at elevated temperature while passing an oxidatively reactive sparging gas such as air through the feedstock. The oxidatively treated feedstock, which contains isotropic pitch, is solvent fractionated to recover a solid pitch which on fusion becomes an anisotropic pitch product having from 50 to 100 percent by volume mesophase. In one aspect of the invention the carbonaceous feedstock is oxidatively treated in a melt phase at a lower temperature and the resulting isotropic pitch is then heated at a higher temperature in a melt phase in the presence or absence of a non-oxidative sparging gas prior to solvent fractionation.

    摘要翻译: 一种用于生产适用于碳纤维制造的各向异性沥青产品的改进方法。 基本上不含中间相沥青的碳质原料在升高的温度下加热,同时使氧化反应性的鼓泡气体如空气通过原料。 包含各向同性沥青的经氧化处理的原料被溶剂分馏以回收固体沥青,其在熔化时成为具有50至100体积%中间相的各向异性沥青产物。 在本发明的一个方面,碳质原料在较低温度下在熔融相中进行氧化处理,然后在存在或不存在非氧化性鼓泡气体的情况下,在熔融相中将所得各向同性沥青加热, 溶剂分馏。