Motion of Particles Through the Fixed Bed in a Gas–Solid–Solid Downflow Reactor
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Конференция |
XV International Conference on Chemical Reactors
05-08 июн. 2001
,
Helsinki
|
| Журнал |
Chemical Engineering Journal
ISSN: 1385-8947
, E-ISSN: 1873-3212
|
| Вых. Данные |
Год: 2003,
Том: 91,
Номер: 2-3,
Страницы: 219-225
Страниц
: 7
DOI:
10.1016/S1385-8947(02)00157-2
|
| Ключевые слова |
Fixed bed, Gas-solid co-current downflow, Gas-solid-solid reactor, Residence time distribution |
| Авторы |
Barysheva L.V.
1
,
Borisova E.S.
1
,
Khanaev V.M.
1
,
Kuzmin V.A.
1
,
Zolotarskii I.A.
1
,
Pakhomov N.A.
1
,
Noskov A.S.
1
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, Pr. Akademika Lavrentieva 5, 630090 Novosibirsk, Russia
|
|
The experimental studies and mathematical modeling are presented for the residence time distribution of fine solids moving in a co-current downflow fixed-bed reactor. Experiments were carried at ambient conditions using a glass column of 30 mm i.d. packed by spheres of 4–6 mm diameter. Fine alumina of 50–250 μm was used as a moving solids. Solids flow rate was varied from 0.1 to 0.5 g cm−2 s−1. The new flight-time technique is applied to measure residence time of fine particles in a packed bed. The influence of particle size and flow rate on the particles residence time is experimentally investigated. New three-dimensional model of moving of fine particles in a packed bed is developed. The model is based on the statistical calculations of an individual particle path in a packed column. Model validation was checked by comparing experimental values of particles residence time distribution with calculated one. Calculated values of particles residence time were found to be in a good agreement with experimental data at the solids flow rate below 0.1 g cm−2 s−1.