Device and method for secondary feeding of furfural residues into hearth furnace through cyclone separation conducted behind furfural residue boiler

Abstract

The invention relates to the technical field of furfural residue processing, and discloses a device and method for secondary feeding of furfural residues into a hearth furnace through cyclone separation conducted behind a furfural residue boiler. The device comprises a spiral feeding pipe. An exhaust pipe is arranged in the middle of the interior of the spiral feeding pipe, and an inlet pipe is arranged on one side wall of the spiral feeding pipe. A conical shell is arranged at the lower end of the spiral feeding pipe, a connecting cylinder is arranged at the lower end of the conical shell, a dust collecting hopper is arranged at the lower end of the connecting cylinder, connecting frames are arranged on the two inner walls of the dust collecting hopper, and flow guide covers are arranged at the upper ends of the connecting frames. A feeding connecting pipe, a stepping motor, connecting bearings, a material poking roller and material poking grooves are arranged, the stepping motor drives the material poking roller to continuously rotate, the two material poking grooves can alternately poke materials, and then the furfural residues can continuously enter a combustion chamber of the furfural residue hearth furnace; and the rotating speed of the stepping motor is adjusted, and therefore the feeding speed of the furfural residues entering the combustion chamber of the furfural residue hearth furnace, namely the secondary furnace feeding speed of the furfural residues, can be adjusted, and the device is very practical.

Description

technical field [0001] The invention relates to the technical field of furfural slag processing, in particular to a furfural slag cyclone separation furfural slag secondary furnace device and method after the furfural slag boiler. Background technique [0002] Furfural slag is a biomass material, such as corncobs, corn stalks, rice husks, cottonseed husks, and the polypentose components in the processing waste of agricultural and sideline products are hydrolyzed to produce furfural (furan formaldehyde). Furfural slag contains a large amount of cellulose, hemicellulose, and lignin, and has good reuse value. For the treatment of furfural slag, it is necessary to rationally utilize furfural slag, eliminate its pollution to the environment, and increase the economic added value of furfural slag , Furfural slag can be made into furfural raw material by using furfural slag boiler. In this process, furfural slag can be dried by boiler exhaust gas first, and then burned in the furna...

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Problems solved by technology

[0003] In the existing furfural slag processing process, after drying and cyclone separation, the furfural slag directly flows into the furnace for the second time into the combustion chamber of the furfural slag hall furnace. Insufficient, after the furfural slag is separated by the cyclone, it flows directly to the combustion chamber of the furfural slag hall furnace. The lack of a relay storage structure makes it easy for the furfural slag to accumulate in the cyclone separator, which affects the separation efficiency of the cyclone separator, and in the existing furfural slag During the processing, the clean air is discharged at a faster speed, which is easy to cause damage to the equipment, etc.

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