التفاصيل البيبلوغرافية
| العنوان: |
REPLACEMENT OF FOSSIL FUEL WITH BIOMASS IN PULP MILL LIME KILNS. |
| المؤلفون: |
Taillon, Jean1 jean.taillon@andritz.com, Horvath, Andras1, Oksman, Antti1 |
| المصدر: |
O Papel. mar2018, Vol. 79 Issue 3, p85-89. 5p. |
| مصطلحات موضوعية: |
*PULP mill waste, LIMEKILNS, FOSSIL fuels, BIOMASS energy, CIRCULATING fluidized bed combustion |
| مستخلص: |
The lime kiln is responsible for most of the fossil fuel consumption in a kraft pulp mill. Fossil fuel prices, and the obligation to reduce CO2 emissions, are strong incentives to replace fossil fuel firing in the kiln with biomass waste products (e.g. bark and chip screening fines). The impact is significant. It is reported that, of all known solutions to reduce greenhouse gas emissions in European kraft pulp mills, a 10% reduction could be achieved by switching from fossil fuels to bioenergy in lime kilns. This substitution can be achieved with biomass gasification. A typical delivery would include a belt dryer and a gasification plant in combination with a multi-fuel burner in the lime kiln. The belt dryer utilizes low temperature waste heat available in the mill. The gasifier is a Circulating Fluidized Bed (CFB) air-blown gasifier operating at atmospheric pressure. ANDRITZ has two gasifier installations in full production in Finland (Metsä Fibre, Joutseno) and in China (Chenming, Zhanjiang). Both mills operate their lime kilns at full capacity with 100% biomass derived gas. At Joutseno, natural gas was replaced by the gasification of Nordic bark. At Zhanjiang, heavy fuel oil was replaced by the gasification of eucalyptus chip screening fines. Non Process Elements (NPE) found in the biomass fuels are efficiently removed. Gasification plants with capacities between 25-110 MW should offer an attractive payback. This roughly corresponds to a lime kiln capacity of 300-1,200 t/d. Key elements which will affect the feasibility of the investment are: lime kiln capacity, fossil fuel costs, biomass costs, need for co-firing, replacement with make-up lime, capital costs and, potentially, CO2 price. [ABSTRACT FROM AUTHOR] |
|
Copyright of O Papel is the property of Associacao Brasileira Tecnica de Celulose e Papel and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Business Source Index |