کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
209472 461671 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extractive gas-phase sampling of the reaction zone of a pressurized entrained-flow coal gasifier
ترجمه فارسی عنوان
نمونه برداری گاز فاز استخراج شده از منطقه واکنش گازسیستم زغال سنگ جریان یافته تحت فشار
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• A novel extractive gas sampling system was constructed for high pressure, high temperature gasification.
• CO and H2 concentrations in the reaction zone decreased with increasing temperature, whereas CO2 increased.
• No statistically significant variation in gas composition with radial position was observed for tested conditions.

A novel extractive gas-phase sampling system was developed for use in a pressurized entrained-flow coal gasifier. The system comprised three parts: a water-cooled probe through which the sampled gases travel, a pneumatic cylinder that directs the radial sampling location, and the control system. The system was designed for safe sampling of the harsh environment in gasifiers and can help understand spatial distribution of concentrations in such a system. To confirm operation of the sampling system, gas-phase samples were extracted from the reaction zone of a 1 ton/day pilot entrained-flow coal gasifier operating at a pressure of 11 bar and at temperatures ranging from 1370 to 1540 °C. Concentrations of carbon monoxide and hydrogen decreased with increasing temperature while carbon dioxide increased with temperature, a result of the higher oxygen/fuel ratio needed to achieve the higher temperature. Synthesis gas (syngas) heating values decreased correspondingly with increasing temperature and the heating value of the syngas exiting the gasifier was higher than for syngas extracted from the reaction zone. Under conditions tested, no statistically significant variation in gas composition with radial position was observed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel Processing Technology - Volume 137, September 2015, Pages 157–163
نویسندگان
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