Method and production line for producing granular fuel and essential fir oil from fir wood dust

Abstract

The invention discloses a method for producing granular fuel and essential fir oil from fir wood dust. High-temperature steam is inflated into the fir wood dust so as to extract the essential fir oilthrough distillation, and then the fir wood dust is dried and compressed to obtain the granular fuel. A used production line comprises an essential fir oil extracting device and a granular fuel preparing device, wherein the essential fir oil extracting device comprises a group of distillation tanks; one ends of the distillation tanks are connected with a steam boiler through steam pipes; the otherends of the distillation tanks are connected with a condenser; the granular fuel preparing device comprises a drying furnace; one end of the drying furnace is connected with an exhaust port of the steam boiler; the other end of the drying furnace is connected with a U-shaped cooling tube through a drying tube; the tail end of the U-shaped cooling tube is connected with a cyclone dust collector; the granular fuel preparing device further comprises a compressing granulator; the feeding end of the drying furnace is connected with slag discharging ports of the distillation tanks through conveyingdevices. Through the method and the production line, the fir wood dust can be fully recycled; a technology is simple and practical; the fir wood dust recycling rate is increased; the recycling valueof the fir wood dust is significantly increased.

Description

technical field [0001] The invention relates to a technology for comprehensive utilization of abandoned forest resources, in particular to a method and production line for making granular fuel and fir essential oil from fir sawdust. Background technique [0002] Chinese fir is a subtropical tree species, and it is the most widely cultivated, fast-growing, and high-economic timber tree species in the Yangtze River Basin and south of the Qinling Mountains in China. The trunk of the fir tree has straight texture, fine structure, soft material, corrosion and moth resistance, and is widely used in construction, bridges, shipbuilding, furniture, etc. A quarter of China's building materials are fir. In the process of wood processing, a large amount of waste such as sawdust and wood shavings is formed. Reasonable and effective reprocessing of recycled wood waste is one of the effective ways to effectively use wood. Usually, it is incinerated or buried or decomposed and fermented to...

AI Technical Summary

Problems solved by technology

In the process of wood processing, a large amount of waste such as sawdust and wood shavings is formed. Reasonable and effective reprocessing of recycled wood waste is one of the effective ways to effectively use wood. Usually, it is incinerated or buried or decomposed and fermented to make fertilizer. Not only will it pollute the environment, but waste resources are easy to be wasted, the recycling rate is not high, and it is difficult to make high-value products with large market demand

Therefore, the waste from wood processing currently has the problems that resources are difficult to recycle, the recycling value is not high, and the recycling rate is low.

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