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生物质成型燃烧成本较低,且经过致密成型后的生物质燃料密度和强度都得到提高,便于运输和燃烧。生物质致密成型技术按加热温度可以分为加热成型和常温高压成型两种。应用较多的成型燃料加工机有活塞冲压式、辊模挤压式、螺旋挤压式3种形式。很多发达国家早在20世纪初就已开始研究生物质成型技术,这些国家的成型设备专业化程度高,自动化程度好,热效率高,污染小,有合理的加工工艺。但由于设备价格高、耗电高、易结渣、原料产品单一,并不适合我国。我国在生物质成型方面的研究起步较晚,目前主要的生物质成型技术包括螺旋挤压技术、活塞冲压技术和辊模挤压成型技术,但与西方发达国家相比仍有较大差距。为了进一步促进我国生物质成型燃料的发展,建议国家应不断完善对生物质成型燃料研究及生产的扶持政策;生物质成型燃料装备不仅要考虑到节能,还应该与指定的原料基地相结合;加强生物质成型机理的研究,减少设备易损件的数量,降低能耗;开发研制以生物质成型物为原料的发电、供电一体化集成设备;在设备实用性、系列化上下功夫,不断降低成本,提高技术水平。
Biomass combustion costs are low, and the densified and dense biomass fuel density and intensity are increased for transport and combustion. Biomass compact molding technology by heating temperature can be divided into heated molding and high temperature molding at room temperature two. Applied more molding fuel processing machine piston stamping, roller extrusion, spiral extrusion three kinds of forms. Many developed countries started to study biomass forming technology as early as the early 20th century. The molding equipment in these countries have a high degree of specialization, good automation, high thermal efficiency, low pollution and reasonable processing technology. However, due to the high price of equipment, high power consumption, easy slagging, a single raw material, is not suitable for our country. The research on biomass forming in our country started relatively late. At present, the main biomass forming technologies include screw extrusion, piston stamping and roll extrusion, but there is still a long way to go compared with western developed countries. In order to further promote the development of biomass briquette in our country, it is suggested that the state should continue to improve the supporting policies on the research and production of biomass briquette; the biomass briquette equipment should not only be energy saving, but also should be combined with the designated raw material base; Research on biomass forming mechanism, reduce the number of wearing parts, and reduce energy consumption; develop and integrate integrated power generation and power supply equipment using biomass as raw material; and make efforts to reduce the cost , Improve the technical level.