Thermocondensed lignocellulose material, and a method and an oven for obtaining it
US4816572A · kind A · utility
13Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1986 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Dec 12, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This material which has a hemi-cellulose content of less tha 2%, a benzopyrene content of less than 2 ug/kg and a calorific value which is about 20% greater than that of the starting material is obtained by isothermal treatment between 220.degree. C. and 280.degree. C. for a period of thirty minutes using crossed flows of treated material and of oxygen-free hot gases in an oven including stirring means (6,9) and a gas generator (1) with the gas being circulated by a fan (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.