Upgrading-process Development of Asphalt and Pitch with Use of Iron-ore

利用铁矿石生产沥青和沥青的升级工艺开发

基本信息

批准号：
58850197
负责人：
OHNUMA Hiroshi
金额：
$ 6.91万
依托单位：
Akita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1983
资助国家：
日本
起止时间：
1983 至 1985
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-58850197/
关键词：
Petroleum Pitch Hydrotreating Iron-ore Desulfurization Demetallization アップグレーディング

项目摘要

Fundamental data on the performance and kinetics of hydrotreating were obtained for the upgrading process development of asphalt and pitch with the use of iron-ore particles in the hydrogen stream at high pressures and at moderate temperatures to reduce sulfur, nickel and vanadium contents in the solid product and to recover light and middle fractions to some extent.The maximum extent of desulfurization, more than 90% for the original pitch basis (more than 80% for the produced char basis) was achieved with autoclave tests at constant hydrogen flow rates in the ranges of pressure from 1 to 100 atm, of heating rate from 5 to 30 ゜C/min, of terminal temperature from 394 to 580 ゜C, and of treatment time from 0 to 110 min. Demetallization (change from organic to inorganic form for nickel and vanadium) as well as desulfurization was found to occur with precise inspection of experimental results at 30 atm. No appreciable change was observed for the properties of recovered oil produced with and without iron-ore additives, equivalent to light and middle fractions.To detect the details of hydrotreating process, reduction and sulfurization of iron-ore were conducted in a microflow reactor with three different kinds of vehicle oils and with mixed gases of hydrogen, nitrogen,and hydrogen sulfide. Reduction process was satisfactorily simulated with a consecutive reaction model including an autocatalytic kinetic. The sulfurization process was found to be facilitated in the further reduced region from the magnetite form. The observed results suggest the interaction between iron-ore and nickel, vanadium as well as sulfur in pitch to be important in the further reduced region from magnetite, too.

获得了加氢处理性能和动力学的基本数据，用于沥青和沥青的升级工艺开发，在高压和中等温度下使用氢气流中的铁矿石颗粒来降低固体中的硫、镍和钒含量产物并在一定程度上回收轻质和中间馏分。最大程度地实现了原沥青基的脱硫率超过90%（产生的焦基的脱硫率超过80%）在恒定氢气流量下进行高压釜测试，压力范围为 1 至 100 atm，加热速率为 5 至 30 °C/min，终端温度为 394 至 580 °C，处理时间为 0 至 110 分钟。通过对实验结果的精确检查，发现脱金属（镍和钒从有机形式转变为无机形式）以及脱硫发生了。 30 atm。使用或不使用铁矿石添加剂生产的回收油的性质没有观察到明显变化，相当于轻馏分和中馏分。为了检测加氢处理过程的细节，在微流中进行了铁矿石的还原和硫化。使用包括自催化动力学在内的连续反应模型，对三种不同车用油和氢气、氮气和硫化氢混合气体的还原过程进行了令人满意的模拟。发现在磁铁矿形式的进一步还原区域促进了硫化过程，观察结果表明铁矿石与镍、钒以及沥青中的硫之间的相互作用在磁铁矿形式的进一步还原区域也很重要。