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首页> 外文会议>European biomass conference and exhibition;ETA-Florence Renewable Energies >CONVERTING LOW-VALUE FEEDSTOCK INTO ENERGY: RECENT DEVELOPMENTS IN GASIFYING PAPER REJECTS, RDF AND MBM AT 5 KWTH, 25 KWTH AND 80 MWTH SCALE
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CONVERTING LOW-VALUE FEEDSTOCK INTO ENERGY: RECENT DEVELOPMENTS IN GASIFYING PAPER REJECTS, RDF AND MBM AT 5 KWTH, 25 KWTH AND 80 MWTH SCALE

机译：将低价值的能源转化为能源：以5千瓦时，25千瓦时和80兆瓦时规模的气化纸屑，RDF和MBM的最新发展

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The aim of decreasing the production cost of renewable electricity is expected to reduce therngovernmental subsidies for (clean, relatively expensive) biomass supply in the future. This makes necessary to findrnalternative (cheaper, yet troublesome) low-value feedstock. The main technical challenges associated to these fuelsrnare fouling, deposition and corrosion in the gas cooling sections of the plant. The adaptation and optimization ofrnindirect co-firing technology for low-value, difficult feedstock can reduce costs, thus widening the applicationrnmarket.In this work, several low-value, troublesome feedstock (paper rejects, refuse-derived fuel RDF, and meat andrnbone meal MBM) have been tested both at laboratory scale (5 kWth BFB and 25 kWth MILENA facilities at ECN) andrncommercial scale (80 MWth CFB gasifier at the Essent’s Amer 9 power plant). The tests have given insight on thernrequired adaptation of the gasifier, the gas cleaning section and the boiler when operating with these specificrnfeedstock. Focus has been placed on the fate and distribution of troublesome compounds (alkalis, chlorine, sulfur,rnheavy metals).The lab-scale results have shown that a decrease in gasification temperature from 850°C to 750°Crnleads to a trade-off between fuel conversion and release of contaminants to the gas phase. Furthermore, a differentrnquantitative distribution of fouling elements in the solid- and gas phase has been observed. On the other hand, thernconcentration of Cl and NH4rn+ in producer gas is similar from either MILENA indirect gasification or direct BFBrngasification. Lastly, results of wood/RDF co-gasification at the 80 MWth CFB gasifier have shown that the gas coolerrnfouling, the main concern issue, can be reduced by decreasing the gasification temperature, thus leading to higherrnplant availability.
机译：降低可再生电力生产成本的目的有望在未来减少政府对（清洁，相对昂贵的）生物质供应的补贴。这使得寻找替代的（廉价的，但麻烦的）低价值原料成为必要。与这些燃料有关的主要技术挑战是工厂气体冷却区的结垢，沉积和腐蚀。间接共烧技术对低价难加工原料的适应和优化可以降低成本，从而扩大了应用市场。在这项工作中，几种低价难加工的原料（废纸，垃圾衍生燃料RDF和肉和骨头粉） MBM已在实验室规模（ECN的5 kWth BFB和25 kWth MILENA设施）和商业规模（在Essent's Amer 9发电厂的80 MWth CFB气化炉）上进行了测试。这些测试对使用这些特定原料操作时气化炉，气体净化段和锅炉的适应性提供了见解。实验室规模的研究结果表明，气化温度从850°C降至750°C会导致权衡取舍，这是令人关注的化合物（碱金属，氯，硫，重金属）的命运和分布的重点。燃料转化并将污染物释放到气相中。此外，已经观察到在固相和气相中结垢元素的定量分布不同。另一方面，生产气体中Cl和NH4rn +的浓度与MILENA间接气化或直接BFBrn气化相似。最后，在80兆瓦CFB气化炉中木材/ RDF共气化的结果表明，可以通过降低气化温度来减少作为主要关注问题的气体冷却器结垢，从而提高植物的利用率。

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