Adding gas from biomass to the gas grid - SGC
Adding gas from biomass to the gas grid - SGC
Adding gas from biomass to the gas grid - SGC
- No tags were found...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
A second difference between coal and <strong>biomass</strong> is <strong>the</strong> reactivity. Biomass readily reacts with oxygenat temperatures starting at 600 °C. Coal needs at least 800 - 1200 °C <strong>to</strong> obtain a useful rate ofconversion. Biomass also readily hydrolyses with water. Pyrolysis of <strong>biomass</strong> can also beconducted at moderate temperatures.Newly designed <strong>biomass</strong> <strong>gas</strong>ification plants have a modest size (5 - 50 <strong>to</strong>n/day) and applymoderate temperature and pressure processes. Pyrolysis and hydrogenation improve <strong>the</strong> quality of<strong>the</strong> syn<strong>gas</strong>.Considering <strong>the</strong> addition of <strong>gas</strong> <strong>from</strong> <strong>biomass</strong> <strong>to</strong> <strong>the</strong> <strong>grid</strong>, most attention has <strong>to</strong> be given <strong>to</strong> smallscalehydro-pyrolysis <strong>gas</strong>ifiers. The cleaning and upgrading of <strong>the</strong> rich syn<strong>gas</strong> <strong>from</strong> <strong>the</strong>se reac<strong>to</strong>rsis much easier than <strong>the</strong> utilisation of <strong>the</strong> lean syn<strong>gas</strong> <strong>from</strong> ‘classic’ <strong>gas</strong>ification processes. A recentIGU publication [lit.7] shows that <strong>from</strong> new <strong>biomass</strong> and waste <strong>gas</strong>ification plants fifty utilise classiccoal <strong>gas</strong>ification processes and only seven utilise a pyrolysing reac<strong>to</strong>r.page: 25
Change language