期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2018
卷号：5
期号：8
页码：76-86
DOI：10.15587/1729-4061.2018.142159
语种：English
出版社：PC Technology Center
摘要：A gasifier of specific design was proposed for gasification of straw containing fuels. Combustion and regeneration zones of this gasifier have the same diameter. A mixture of wood and straw pellets was used as a fuel. It was established that when using up to 40 % or less straw pellets in the fuel for 360 hours of the gasifier operation, there were no deposits on the grate.A study was conducted to assess the effect of content of straw pellets in fuel on concentration and volume of CO in the gas, total gas yield, amount of gas produced per kilogram of fuel and duration of the proposed gasifier operation. The study result is represented by a one-factor equation. A two-factor experiment was carried out to establish the effect of content of straw pellets in the fuel on dynamics of changes in CO concentration in the gas in the course of the gasifier operation. A 2 kg portion of fuel was charged in each series of experiments, operation time and CO content in the gas were recorded at equal time intervals. The content of straw pellets in the fuel was increased from 0 % to 100 % in 20 % increments with each charge of the gasifier with fuel.It has been established that for efficient gasification of straw-containing fuel without formation of solid deposits, it is rationally to add no more than 40 % of straw pellets to the fuel. When 40 % of straw was used in the fuel, concentration and volume of produced CO increased by 25 %, however, the gas yield decreased by 5.3 % compared to the use of wood. Although the 100 % content of straw pellets in the fuel resulted in a 44.3 % increase in CO concentration in the generator gas and a 40 % growth of CO volume, the total gas yield has reduced by 7.7 %. Duration of the gasifier operation (at a 2 kg fuel charge) has increased by 2.8 %. The growth of CO content at a 100 % content of straw in fuel has indicated a 13‒18 % increase in the calorific value of the resulting gas compared to a 100 % wood content.Therefore, it is rational to use up to 100 % content of straw in the fuel although this requires the gasifier design preventing formation of stable deposits on the working surfaces.
关键词：gasifier;generator gas;straw pellets;concentration and volume of CO;agglomeration
