１简介 第一代固体燃料是以乌洛托品、酒精、石蜡等为原料制作，成本高（约 ８ ０００元／ｔ），有烟尘，且熄灭时有臭味；第二代固体燃料具有成本低、安全、无烟尘等优点，但熔点低，不能过夏天，且燃烧后有残渣。第三代固体燃料除了上述的优点外，提高了凝固点（达５０℃）， 1 Introduction The first generation of solid fuels are made of urotropine, alcohol, paraffin and other raw materials, high cost (about 8 000 yuan / t), soot, and smell when off; the second generation of solid fuel costs Low, safe, smoke-free, etc., but the melting point is low, can not be over the summer, and there is residue after burning. The third generation of solid fuels in addition to the above advantages, increased freezing point (up to 50 ℃)