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Варианты переработки низкосортной древесины на углеродные материалы ; Options of Low-Grade Wood Processing into Carbon-Base Materials

Authors: Yurev, Y. L.; Gindulin, I. K.; Drozdova, N. A.;

Варианты переработки низкосортной древесины на углеродные материалы ; Options of Low-Grade Wood Processing into Carbon-Base Materials

Abstract

The forested area in the most inhabited lands of the European Ural part of the Russian Federation is occupied mainly by low-grade hardwood with a predominance of birch and aspen. Pyrolysis is a traditional method for low-grade wood processing; the produced charcoal can be effectively used in the technology of other carbon materials. The structure of the developed system for the production of carbon materials from wood consists of 4 subsystems: 1 - raw material procurement, 2 - primary wood processing, 3 - wood pyrolysis, 4 - charcoal processing. When harvesting and primary processing of wood, energy and resource saving is ensured through the wood waste utilization; during pyrolysis - by using heat exothermic reactions. In the timber industry enterprises, the excess heat abstraction is possible when using modular pyrolysis retort units and similar apparatuses for the production of charcoal. When processing charcoal, resource saving is provided by briquetting of its small fractions, and energy saving - by activation gases burning. Water steam activation poses the least environmental hazard in the producing process of active carbons. We propose to conduct oxidation of activated charcoal (for reasons of environmental safety) in the vapor phase using hot moist air as an oxidizing agent. At the same time, no wastewater is formed. The analysis of options of low-grade wood processing has shown that the developed technology of carbon materials allows us to increase the cost of products, for example, from 1 m(3) of birch wood more than 3 times, and to increase the economic stability of forestry enterprises. At the same time, we can obtain up to 4 types of carbon materials (charcoal, wood-coal briquettes, activated and oxidized coals), and reduce the environmental hazard of their production by burning a steam-gas mixture of wood pyrolysis, by the use of water vapor (at the stage of activated charcoals producing) and air (at the stage of obtaining of oxidized coal). ; Лесопокрытая площадь в наиболее обжитых районах ...

Country
Russian Federation
Keywords

ЭНЕРГОСБЕРЕЖЕНИЕ, 580, ДРЕВЕСНЫЙ УГОЛЬ, 550, PYROLYSIS, CHARCOAL, ENERGY SAVING, ПЕРЕРАБОТКА НИЗКОСОРТНОЙ ДРЕВЕСИНЫ, LOW-GRADE WOOD PROCESSING, ПИРОЛИЗ, АКТИВНЫЕ УГЛИ, ACTIVATED CHARCOAL

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Related to Research communities
Energy Research