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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.

为在高压和中温条件下利用氢流中的铁矿石颗粒对沥青和沥青进行加氢处理，以降低固体产品中的硫、镍和钒含量，并在一定程度上回收轻馏分和中馏分，开发加氢处理的性能和动力学的基本数据。在压力为1至100 atm、升温速率为5至30ºC/min、终端温度为394至580ºC、处理时间为0至110ºC的恒定氢气流速下，通过高压灭菌器试验实现了最大程度的脱硫，原始沥青基超过90%（生产的焦炭基超过80%）。通过对实验结果的精确检查，发现在30atm下发生了脱金属（镍和钒从有机形式变为无机形式）和脱硫。添加和不添加铁矿石的采出油的性质没有明显变化，相当于轻馏分和中馏分。为了了解加氢处理过程的细节，在微流反应器中，用三种不同的车用油和氢气、氮气和硫化氢的混合气体对铁矿石进行了还原和硫化。用包含自催化动力学的连续反应模型对还原过程进行了满意的模拟。发现在磁铁矿形态的进一步还原区，硫化过程更容易进行。观察结果表明，铁矿与镍、钒以及沥青中硫的相互作用在磁铁矿进一步还原区也很重要。