Annular kiln continuous-type retort carbonization furnace

Abstract

The invention relates to an annular kiln continuous-type retort carbonization furnace, which is characterized in that a raw material is fed in a feed inlet of a retort from a feeding machine, ratchets of middle cylinder can be driven by a push rod of an electric drive unit, continuous ordered rotation of a gas collection cylinder, a connecting pipe, a cover plate and the retort are driven in an enclosed ring kiln, a combustor in a heating section is ignited for heating the retort, heat flue gas generated by combustion gas during the heating section is used for preheating the retort in the preheating section, high temperature heat energy released by the high temperature retort after charing is sent to the preheating segment by an induced draught fan for preheating the retort, a discharge port is opened when the retort is rotated to the end of a cooling section, and charcoal is transported by a discharging machine.

Description

technical field [0001] The invention relates to a ring kiln type retort carbonization furnace for large-scale continuous production of gas-wood vinegar-wood tar-charcoal by using biomass in renewable energy and a process method thereof. Background technique [0002] At present, my country uses dry distillation technology to produce gas, wood vinegar, wood tar and charcoal from biomass. The equipment used is intermittent carbonization furnace. This kind of furnace is built into a round (square) cylindrical furnace body by refractory materials, and a fire grate is installed at the bottom of the furnace body. There is a feeding port and an ash outlet on the upper and lower furnace bodies close to the grate, and an annular plate is welded on the outer cylinder of the steel retort, and the annular plate overlaps and falls on the furnace body. There is a bolt-tight connection cover plate on the upper cover of the circular still mouth. An exhaust pipe is connected with the connec...

AI Technical Summary

Problems solved by technology

The large amount of heat energy released during cooling is also wasted in vain

The second is intermittent operation, long time and low output

To meet the demand, dozens or even hundreds of such batch furnaces must be built, which limits the use of batch retort carbonization furnaces in terms of time, space and manufacturing costs

The third is that every time a furnace is produced, the retort must be hoisted repeatedly, which is time-consuming, labor-intensive and unsafe

[0003] In addition, the currently used intermittent carbonization furnace is to directly use burning biomass (wood, branch wood, etc.) as an external heat source to heat the retort. The disadvantage is that 3% of the scale will be produced at the bottom of the retort for each furnace. The heat conduction effect of scale is poor, and the retort with scale and without scale requires a great difference in energy consumption when heated to the same temperature

In addition, since the retort will produce oxide scales every time, the retort will be scrapped after a period of time

Of course, stainless steel is also used in retorts, but stainless steel is expensive, and the manufacturing cost rises sharply, which is difficult for users to accept.

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