权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Selective Synthesis of Distillates by Transfer Hydrocracking of Heavy Oils.

通过重油转移加氢裂化选择性合成馏分油。

基本信息

批准号：
02555172
负责人：
FUJIMOTO Kaoru
金额：
$ 2.75万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02555172/
关键词：
Heavy oil Cracking Hydrogen Transfer Carbon Catalyst Activated Coal Spill-over 活性炭褐炭

项目摘要

It was found that a special kind of active carbon, which was activated by proper methods to give high specific surface area, pore volume and high density of radical site and which carry metal or metal sulfate, showed excellent catalytic activity for the transfer hydrocracking of heavy hydrocarbons such as vacuum residue or natural asphalt to make distillate. Cracking of heavy hydrocarbons proceeded both in the oil and on the carbon surface to give paraffins, aromatics, olefins, free radicals and organo-sulfur compounds, with low molecular weight. On the other hand, asphalten, which is high aromatic and high molecular weight, was adsorbed -on active carbon to be decomposed an'd to be dehydrogenated making light hydrocarbons and coke. Hydrogen atoms which was generated during coking moved on the carbon surface to reach metal site. On the metal, some part of hydrogen atoms reacted with olefins or organo-sulfur compounds to make paraffins or de-sulfured compounds, . and other part of hydro … More gen atoms on the metal site combined to fokm hydrogen gas to go out into liquid phase. The latter part of hydrogen movement was a reversible phenomenon. It was controled by the concentratiori of hydrogen in the liquid, which was proportional to the pressure of hydrogen in the gas phase. Therefore'. by conducting the carbon catalyied reaction under certain hydrogen pressure, the hydrocracking of heavy oil proceed without any hydrogen consumption. This concept was confirmed by the reaction of model compounds (diphenyl propane as a hydrogen acceptor and tetra-hydro naphthalene as a hydrogen donor) on the same catalyst.In order to make excellent carbon catalyst, a variety of activation of coal were tried. By treating a coal with hydrogen at high temperature, a porous carbon which has excellent hydrogenation activity, when it carried iron, was made while brown coal was treated with CO_2 at 850ﾟC, a porous barbon which was highly active for cracking heavy oil and for dehydrogenating asphalten was developed. By using tliis carbon (with 5 wt% Fe) complete conversion of vacuum residue of Aravian fleavy Crude was attained to give 80 % oil, 8. % gas and 10 % coke.Based on this concept, a new coal-petroleum co-processing system was postulated. Less

研究发现，一种经过适当方法活化、具有高比表面积、孔容和高自由基中心密度、负载金属或金属硫酸盐的特殊活性炭，对减压渣油或天然沥青等重质烃类的转移加氢裂化表现出优异的催化活性，制成馏分油。重质烃的裂解在油中和碳表面上进行，产生具有低分子量的烷烃、芳烃、烯烃、自由基和有机硫化合物。另一方面，高芳烃、高分子量的沥青质吸附在活性炭上分解、脱氢，生成轻质烃和焦炭。结焦过程中产生的氢原子在碳表面移动到达金属位。在金属上，一部分氢原子与烯烃或有机硫化合物反应生成烷烃或脱硫化合物。和其他水电部分 ...更多信息金属位置上的gen原子结合成fokm氢气，以进入液相。氢运动的后半部分是可逆的。它是由液相中氢的浓度控制的，该浓度与气相中氢的压力成正比。因此“。通过在一定的氢压下进行碳催化反应，重油的加氢裂化在不消耗任何氢的情况下进行。通过模型化合物（二苯基丙烷为氢受体，四氢化萘为氢供体）在同一催化剂上的反应证实了这一概念。通过高温氢气处理煤，制得了载铁后具有优良加氢活性的多孔炭;通过850 ℃ CO_2处理褐煤，制得了对重油裂解和沥青质裂解具有高活性的多孔巴尔邦。用这种炭（含5wt%的铁）使阿拉维亚蓬松原油减压渣油完全转化，得到80%的油，8。在此基础上，提出了一种新的煤-石油共处理系统。少