Formed Coking Through The Copreheattreatment With Additive

添加剂共预热形成焦化

基本信息

批准号：
59850141
负责人：
MOCHIDA Isao
金额：
$ 5.12万
依托单位：
Research Institute of Industrial Science, Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1984
资助国家：
日本
起止时间：
1984 至 1986
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-59850141/
关键词：
Anisotropy Formed Coking Blustfurnace Coke Copreheattreatment Coal 石炭熱間強度

项目摘要

The co-preheattreatment of non-fusible and slightly fusible coals with A240 and hydrogenated A240 under high temperature-short contact-time conditions around 500 ゜C has been examined in an attempt to produce a formed coke with better anisotropic development. These conditions shortened the copreheat-treatment time and provided better anisotropic development in the resultant coke after carbonization. Effectiveness of short contact-time has been examined interms of the extent of depolymerization of coal molecules suitable for anisotropic development, this being related to coal liquefaction under similar conditions.The carbonization properties of weathered bituminous coals were compared with those of the non-weathered coals. The weathering decreased the fusibility of the coal to leave more basic anisotropy and to diminish the size of the majority of the anisotropy in the resulting coke. On the other hand, more domain and flow domain textures developed. Co-carbonization with a petroleum pitch additive was found effective enhancing the fusibility of the coal and anisotropic development in the coke. Formed coking of the weathered coal by means of copreheat-treatment with the additive, provided an anisotropic, dense and strong coke of uniform size. For the weathered coal, the optimum copreheat-treat-ment was shorter than that using the non-weathered coal, indicating high coking reactivity of the weathered coal. The transferable hydrogens from the additive are rapidly consumed by the oxygen containing groups of the weathered coal.

研究了不熔煤和微熔煤与A240和氢化A240在500℃左右的高温短接触时间条件下的共预热处理，试图生产具有更好的各向异性发展的成型焦，缩短了这些条件。短接触时间的有效性已在碳化后的所得焦炭中提供了更好的各向异性发展。煤分子的解聚适合于各向异性的发展，这与类似条件下煤的液化有关。将风化烟煤的碳化性能与非风化煤的碳化性能进行了比较。风化降低了煤的熔化性，留下了更多的基本各向异性。另一方面，为了减少所得焦炭中大部分各向异性的大小，开发了更多的域和流域纹理与石油沥青。发现添加剂能有效增强煤的熔融性和焦炭的各向异性发展，通过与添加剂共热处理使风化煤形成焦化，为风化煤提供各向异性、致密且坚固的焦炭。最佳共预热时间比使用未风化煤的时间短，表明风化煤的焦化反应性较高，来自添加剂的可转移氢被风化煤的含氧基团迅速消耗。煤炭。