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14 条记录 (耗时 0.034 秒)

    Ready-to-use seed composition and process thereof
    5.
    发明授权
    Ready-to-use seed composition and process thereof 有权
    即用种子组合物及其制备方法

    公开(公告)号：US07968079B2

    公开(公告)日：2011-06-28

    申请号：US11970780

    申请日：2008-01-08

    申请人： Biswanath Sarkar ,  Kapil Arya ,  Gopal Ravichandran ,  Mohan Prabhu Kuvettu ,  Shiba Prasad Choudhury ,  Venkatachalam Krishnan ,  Sanjay Kumar Ray ,  Jayaraj Christopher ,  Satish Makhija

    发明人： Biswanath Sarkar ,  Kapil Arya ,  Gopal Ravichandran ,  Mohan Prabhu Kuvettu ,  Shiba Prasad Choudhury ,  Venkatachalam Krishnan ,  Sanjay Kumar Ray ,  Jayaraj Christopher ,  Satish Makhija

    IPC分类号： C01B39/20

    CPC分类号： B01J29/084 ,  C01B33/20 ,  C01B39/20

    摘要： The present disclosure provides a ready-to-use seed composition water, a source of silica, a source of alumina, and Na20, wherein the molar ratio of H20:Na20 ranges from 5 to 20, Na20:SiO2 ranges from 0.4 to 5 and SiO2:Al203 ranges from 1.3 to 5 used in the preparation of a synthetic faujasite zeolite which has high thermal stability and higher crystallite size. It further provides a process for preparing the ready-to-use seed composition for preparation of synthetic faujasite zeolite that requires lower crystallization time. The present disclosure provides a seed composition that does not require maturing time and a reaction gel composition that has low water and soda content. The present disclosure further provides a process for the preparation of synthetic faujasite zeolite by blending seed and reaction gel reaction composition to form a seed gel composition and subjecting it to crystallization.

    摘要翻译： 本公开提供了即用型种子组合物水，二氧化硅源，氧化铝源和Na 2 O，其中H 2 O:Na 2的摩尔比为5至20，Na 2 O:SiO 2的范围为0.4至5，以及 SiO 2：Al 2 O 3在用于制备具有高热稳定性和较高微晶尺寸的合成八面沸石沸石中使用的范围为1.3至5。 它还提供了一种制备即用型种子组合物的方法，该种子组合物用于制备需要较低结晶时间的合成八面沸石沸石。 本公开提供了不需要熟化时间的种子组合物和具有低水和苏打含量的反应凝胶组合物。 本公开还提供了通过混合种子和反应凝胶反应组合物来制备合成八面沸石沸石以形成种子凝胶组合物并使其结晶的方法。

    A PROCESS FOR THE PRODUCTION OF NEEDLE COKE
    8.
    发明申请
    A PROCESS FOR THE PRODUCTION OF NEEDLE COKE 有权
    一种生产针刺的方法

    公开(公告)号：US20070181462A2

    公开(公告)日：2007-08-09

    申请号：US10892024

    申请日：2004-07-15

    申请人： Debasis Bhattacharyya ,  Satheesh Kumaran ,  Bandaru Prasad Gupta ,  Pramod Kumar ,  Asit Das ,  Gadari Saidulu ,  Satyen Das ,  Gurpreet Kapur ,  Veena Bansal ,  Venkatachalam Krishnan ,  Satish Makhija ,  Sobhan Ghosh ,  Niranjan Raje

    发明人： Debasis Bhattacharyya ,  Satheesh Kumaran ,  Bandaru Prasad Gupta ,  Pramod Kumar ,  Asit Das ,  Gadari Saidulu ,  Satyen Das ,  Gurpreet Kapur ,  Veena Bansal ,  Venkatachalam Krishnan ,  Satish Makhija ,  Sobhan Ghosh ,  Niranjan Raje

    IPC分类号： C10G51/02 ,  C10G9/00

    CPC分类号： C10G9/005 ,  C10B55/00 ,  C10G51/023

    摘要： A process is disclosed for producing needle coke from heavy atmospheric distillation residues having sulfur no more than 0.7 wt %, which process involves the steps of heating the feedstock to a temperature in the range of 440 to 520° C. for thermal cracking in a soaking column under pressure in the range of 1 to 10 kg/cm2 to separate the easily cokable material, separating the cracked products in a quench column and a distillation column and then subjecting the hydrocarbon fraction from the bottom of the quench column and a hydrocarbon fraction having a boiling point in the range of 380 to 480° C. from the distillation column and/or any other suitable heavier hydrocarbon streams in a definite ratio depending on certain characteristic parameters to thermal cracking in a second soaking column at a temperature of 460 to 540° C., pressure in the range of 2 to 20 kg/cm2 in presence of added quantity of steam for formation of a mesophase carbonaceous structure which on steam stripping and cooling forms a solid crystalline coke suitable for manufacturing of graphite electrode of large diameter having co-efficient of thermal expansion lower than 1.1×10−6/° C. measured on graphite artifact in the temperature range of 25 to 525° C.

    摘要翻译： 公开了一种用于从具有不超过0.7重量％的硫的重大气压蒸馏残余物生产针状焦炭的方法，该方法包括将原料加热至440-520℃范围内的温度以进行浸泡中的热裂解 柱在1至10kg / cm 2范围内的压力下分离易分解的易吸收材料，将裂化产物在骤冷塔和蒸馏塔中分离，然后将来自底部的烃馏分 骤冷塔和具有沸点在380-480℃范围内的沸点在380-480℃范围内的烃馏分和/或任何其它合适的较重的烃流以一定的比例取决于某些特征参数与第二次均热中的热裂解 在460至540℃的温度下，在存在用于形成中间相碳质结构的添加量的蒸汽的存在下，在2至20kg / cm 2范围内的压力，其中 在蒸汽汽提和冷却时，形成适用于制造热膨胀系数小于1.1×10 -6 /℃的大直径石墨电极的固体结晶焦炭，其温度在石墨伪影上测量 范围为25至525℃

    Process for the production of needle coke
    10.
    发明申请
    Process for the production of needle coke 有权
    生产针状焦的工艺

    公开(公告)号：US20050284793A1

    公开(公告)日：2005-12-29

    申请号：US10892024

    申请日：2004-07-15

    申请人： Debasis Bhattacharyya ,  Satheesh Kumaran ,  Bandaru Prasad Gupta ,  Pramod Kumar ,  Asit Das ,  Gadari Saidulu ,  Satyen Das ,  Gurpreet Kapur ,  Veena Bansal ,  Venkatachalam Krishnan ,  Satish Makhija ,  Sobhan Ghosh ,  Niranjan Raje

    发明人： Debasis Bhattacharyya ,  Satheesh Kumaran ,  Bandaru Prasad Gupta ,  Pramod Kumar ,  Asit Das ,  Gadari Saidulu ,  Satyen Das ,  Gurpreet Kapur ,  Veena Bansal ,  Venkatachalam Krishnan ,  Satish Makhija ,  Sobhan Ghosh ,  Niranjan Raje

    IPC分类号： C10B55/00 ,  C10B57/02 ,  C10G9/00 ,  C10G51/02

    CPC分类号： C10G9/005 ,  C10B55/00 ,  C10G51/023

    摘要： A process is disclosed for producing needle coke from heavy atmospheric distillation residues having sulfur no more than 0.7 wt %, which process involves the steps of heating the feedstock to a temperature in the range of 460 to 540° C. for thermal cracking in a soaking column under pressure in the range of 1 to 10 kg/cm2 to separate the easily cokable material, separating the cracked products in a quench column and a distillation column and then subjecting the hydrocarbon fraction from the bottom of the quench column and a heavy gas oil fraction having 10% true boiling point more than 370° C. and 90% true boiling point not less than 480° C. from the distillation column and/or any other suitable heavier hydrocarbon streams in a definite ratio depending on certain characteristic parameters to thermal cracking in a second soaking column at a temperature of 440 to 520° C., pressure in the range of 2 to 20 kg/cm2 in presence of added quantity of steam for formation of a mesophase carbonaceous structure which on steam stripping and cooling forms a solid crystalline coke suitable for manufacturing of graphite electrode of large diameter having co-efficient of thermal expansion lower than 1.1×10−6/° C. measured on graphite artifact in the temperature range of 25 to 525° C.

    摘要翻译： 公开了一种用于从具有不超过0.7重量％的硫的重大气压蒸馏残余物生产针状焦炭的方法，该方法包括将原料加热至在460至540℃范围内的温度以进行浸泡中的热裂解 柱在1至10kg / cm 2范围内的压力下分离易分解的易溶材料，将裂化产物在骤冷塔和蒸馏塔中分离，然后将来自底部的烃馏分 淬火塔和具有10％真实沸点大于370℃的重质瓦斯油馏分和来自蒸馏塔和/或任何其它合适的较重烃流的确定的90％真实沸点不低于480℃ 的比例取决于某些特征参数与第二均热塔中的热裂解在440至520℃的温度下，在2至20kg / cm 2范围内的压力，在加入量 蒸汽格式化 n的中间相碳质结构，其在蒸汽汽提和冷却时形成适于制造热膨胀系数小于1.1×10 -6 /℃的大直径石墨电极的固体结晶焦炭。 在25至525℃的温度范围内测量石墨伪影。