Method for the production of needle coke
    1.
    发明授权
    Method for the production of needle coke 失效
    针状焦生产方法

    公开(公告)号:US4333816A

    公开(公告)日:1982-06-08

    申请号:US179281

    申请日:1980-08-18

    CPC分类号: C10C3/00 C10B55/00

    摘要: Coal tar pitch is liquified at temperature of from about 135.degree. C. to 280.degree. C. The liquid coal tar pitch is filtered through a sieve with apertures from about 100 to 220 .mu.m and with a closed surface area of at least 75 percent of the total sieve surface under pressures of from about 2 to 10 bar until a filter cake of a height of from about 40 to 80 mm forms above the sieve for separating ash, soot and quinoline insoluble particles from the liquid. Then the filtrate obtained is subjected to a coking process.The needle cokes resulting in accordance with the invention provide excellent materials for the production of graphite electrodes.

    摘要翻译: 煤焦油沥青在约135℃至280℃的温度下液化。液体煤焦油沥青通过具有约100至220μm的孔的筛子过滤,并且封闭的表面积为至少75%的封闭表面积 在大约2至10巴的压力下的总筛表面直到在筛子上方形成高度为约40至80mm的滤饼,用于从液体中分离灰分,烟灰和喹啉不溶性颗粒。 然后将得到的滤液进行焦化处理。 根据本发明得到的针状焦炭为生产石墨电极提供了优异的材料。

    Process for the production of coke from pitch
    2.
    发明授权
    Process for the production of coke from pitch 失效
    从沥青生产焦炭的工艺

    公开(公告)号:US4104150A

    公开(公告)日:1978-08-01

    申请号:US765892

    申请日:1977-02-07

    IPC分类号: C10B55/00 C10L9/00 C10G9/14

    CPC分类号: C10L9/00 C10B55/00

    摘要: Coal-tar pitch is heated to a temperature which is at least 100.degree. C above its softening point but below its decomposition temperature and is mixed with a filter aid, such as kieselghur or activated carbon prior to filtering the pitch at at least the preheat temperature so as to remove ashes, soot and heavy metals therefrom. The thus-purified pitch is then coked. In this manner, it is possible to obtain high-quality, anisotropic acicular coke which is readily convertible into graphite.

    摘要翻译: 将煤焦油沥青加热至高于其软化点至少100℃但低于其分解温度的温度,并在至少预热温度下过滤沥青之前与助滤剂例如kieselghur或活性炭混合 从而从其中除去灰分,烟灰和重金属。 然后将如此纯化的沥青焦化。 以这种方式,可以获得易于转化为石墨的高质量的各向异性针状焦炭。

    Method of producing an isotropic coke
    5.
    发明授权
    Method of producing an isotropic coke 失效
    生产各向同性焦炭的方法

    公开(公告)号:US4289604A

    公开(公告)日:1981-09-15

    申请号:US783030

    申请日:1977-03-31

    IPC分类号: C10B57/04 C01B31/00 C10B55/00

    CPC分类号: C10B55/00

    摘要: Manufacture of isotropic coke by first selecting as feed material tar from low temperature carbonization with a hydrogen content above 5.5%, a carbon content less than 88% and a softening point above 60.degree. C., filtering the tar to remove solid particles, and heating the filtrate to a temperature between about 900.degree. C. and 1300.degree. C. to form an isotropic coke.

    摘要翻译: 通过首先从低温碳酸化中选择氢含量高于5.5%,碳含量低于88%,软化点高于60℃的原料焦油制备各向同性焦炭,过滤焦油以除去固体颗粒,加热 滤液在约900℃至1300℃之间的温度下形成各向同性的焦炭。

    Method for the production of carbonaceous articles, particularly strands

    公开(公告)号:US4055583A

    公开(公告)日:1977-10-25

    申请号:US696296

    申请日:1976-06-15

    IPC分类号: D01F9/145 D01F9/32 D01F9/12

    CPC分类号: D01F9/322 D01F9/145

    摘要: Pitch having a Kramer-Sarnow softening point between 70.degree. and 190.degree. C is heated to a temperature in the range of 40.degree. to 100.degree. C above the softening point thereof. There is thus obtained a molten mass having non-molten particles distributed therein. A filtering operation under a pressure greater than atmospheric pressure is carried out to remove the particles from the molten mass. The molten mass may then be treated in different ways. According to one embodiment, the molten mass is held at a temperature between 280.degree. and 350.degree. C to distill off low molecular weight components of the pitch and the resulting product is thereafter shaped by extrusion to the form of strands. According to another embodiment, the molten mass is cooled, ground to particulate form and contacted with an aliphatic solvent having a boiling point between 60.degree. and 70.degree. C. This solvent dissolves a portion of the ground mass and, after separation of the solvent from the residue, the latter is heated to a molten state and thereafter extruded into the form of strands. In either embodiment, the previously mentioned filtering operation provides for a greater homogeneity of the strands since the non-molten particles, which could form a second phase, are substantially completely eliminated. In both embodiments, the strands obtained are dusted with finely divided activated carbon which has been impregnated with a liquid oxidizing agent. The dusted strands are oxidized in an oxidizing atmosphere at temperatures between 300.degree. and 400.degree. C. The oxidation increases the melt-resistance of the strands. The oxidized strands are next carbonized, the increased melt-resistance thereof preventing melting of the strands during the carbonizing treatment. If desired, the strands may also be graphitized. The method described enables carbon-containing or graphite-containing strands suitable for many applications to be produced in a much shorter time than was possible heretofore.

    Method for the production of carbonaceous articles, particularly strands

    公开(公告)号:US3997654A

    公开(公告)日:1976-12-14

    申请号:US570458

    申请日:1975-04-22

    CPC分类号: D01F9/15 D01F9/145 D01F9/322

    摘要: Pitch having a Kramer-Sarnow softening point between 70.degree. and 190.degree. C is heated to a temperature in the range of 40.degree. to 100.degree. C above the softening point thereof. There is thus obtained a molten mass having non-molten particles distributed therein. A filtering operation under a pressure greater than atmospheric pressure is carried out to remove the particles from the molten mass. The molten mass may then be treated in different ways. According to one embodiment, the molten mass is held at a temperature between 280.degree. and 350.degree. C to distill off low molecular weight components of the pitch and the resulting product is thereafter shaped by extrusion to the form of strands. According to another embodiment, the molten mass is cooled, ground to particulate form and contacted with an aliphatic solvent having a boiling point between 60.degree. and 70.degree. C. This solvent dissolves a portion of the ground mass and, after separation of the solvent from the residue, the latter is heated to a molten state and thereafter extruded into the form of strands. In either embodiment, the previously mentioned filtering operation provides for a greater homogeneity of the strands since the non-molten particles, which could form a second phase, are substantially completely eliminated. In both embodiments, the strands obtained are dusted with finely divided activated carbon which has been impregnated with a liquid oxidizing agent. The dusted strands are oxidized in an oxidizing atmosphere at temperatures between 300.degree. and 400.degree. C. The oxidation increases the melt-resistance of the strands. The oxidized strands are next carbonized, the increased melt-resistance thereof preventing melting of the strands during the carbonizing treatment. If desired, the strands may also be graphitized. The method described enables carbon-containing or graphite-containing strands suitable for many applications to be produced in a much shorter time than was possible heretofore.

    Nitric acid process for the manufacture of anthraquinone from
o-benzyl-toluene
    9.
    发明授权
    Nitric acid process for the manufacture of anthraquinone from o-benzyl-toluene 失效
    用于从邻 - 甲苯甲苯制备蒽醌的硝酸方法

    公开(公告)号:US4185024A

    公开(公告)日:1980-01-22

    申请号:US8388

    申请日:1979-02-01

    CPC分类号: C07C46/02 C07C51/265

    摘要: A process for the manufacture of anthraquinones in which o-benzyl-toluene is first oxidized with 25 to 50 weight-% nitric acid at atmospheric pressure and moderate temperatures, and then further oxidized with a more dilute nitric acid at elevated temperatures and pressures to yield crude o-benzoyl-benzoic acid. The crude product is then esterified with methanol, the methyl ester distilled and, when necessary, recrystallized, and heated with concentrated sulfuric acid to yield anthraquinone in high yield and of a high degree of purity.

    摘要翻译: 一种制备蒽醌的方法,其中邻甲苯甲苯首先在大气压和中等温度下用25至50重量%的硝酸氧化,然后在较高的温度和压力下用更稀硝酸进一步氧化,得到 粗苯甲酰苯甲酸。 然后将粗产物用甲醇酯化,蒸馏甲酯,必要时重结晶,并用浓硫酸加热,以高产率和高纯度得到蒽醌。

    Process for making indole
    10.
    发明授权
    Process for making indole 失效
    制造吲哚的方法

    公开(公告)号:US4243590A

    公开(公告)日:1981-01-06

    申请号:US41516

    申请日:1979-05-22

    IPC分类号: C07D209/08

    CPC分类号: C07D209/08

    摘要: Process for making indole by subjecting 1,2,3,4-tetrahydroquinoline to a thermal decomposition at a reaction temperature of about 650.degree. to 750.degree. C. in a reactor filled with a substantially inert material and in the presence of steam. The starting product for this process is easily available and can easily be obtained by chemical reaction and the process itself has a high yield.

    摘要翻译: 在约650℃至750℃的反应温度下,在充满基本上惰性的物质的反应器中并在蒸汽存在下,使1,2,3,4-四氢喹啉进行热分解,制备吲哚的方法。 该方法的起始产物易于获得,并且可以通过化学反应容易地获得,并且该方法本身具有高产率。