Earlier this year, workers in Shijiazhuang Jinju straw briquetting plant begins to dry furfural residue , then put it into grass straw briquetting machine, pressed into 3 cm long lump fuel.
" Furfural residue boiler briquette mainly sold to more customers, feed equipment merchants selling bread , steamed bread the same pot with furfural residue briquetting 6 dollars cheaper than coal ." Jinju straw briquetting plant manager Zhushuan Zhu explained , furfural residue is crushed corn cobs after a certain amount of sulfuric acid, at a certain temperature and pressure, potato peeling machine of chemical reactions of hydrolysis of waste discharged furfural extraction , due to its strong acidity , can not be directly used as fertilizer in the soil , so it will Zhushuan Zhu bought drying , briquetting machine with compressed into fuel sales .