Cellar type biomass charcoal combination kiln

Abstract

The invention discloses a cellar type biomass charcoal combination kiln. The cellar type biomass charcoal combination kiln comprises a plurality of cellar type kiln bodies distributed in arrays, and aprecombustion heat conduction underground tunnel is arranged between two rows of kiln bodies. The combustible gas in the carbonization process sequentially supplies gas equipment immediately throughthe precombustion heat conduction underground tunnel and a main heat conduction underground tunnel under the action of a draught fan. The combustible gas is ignited in the precombustion heat conduction underground tunnel to release pressure and prevent explosion. The cellar type structure achieves better heat insulation effect and gastight effect on the premise of low cost; the energy consumptionis greatly reduced; the quality of charcoal is greatly improved; the carbonization gas is immediately used safely and conveniently while the environment pollution is completely eliminated; the scale of the combination kiln is convenient to adjust flexibly.

Description

technical field [0001] The invention relates to a kiln for producing biochar. Background technique [0002] Forestry waste such as branches, bark, wood processing scraps, firewood, twig firewood, curly bark, shavings, sawdust, etc., after crushing and crushing, the sawdust is hot-pressed into rods with rod-making equipment, and the rods are carbonized The prepared charcoal is called biochar or machine-made charcoal. Most of the current production practices still use the traditional earth kiln charcoal firing process to produce biomass charcoal. It takes 10 to 15 days from kiln installation to charcoal discharge. The production cycle is long, energy consumption is high, and flue gas pollution is serious. Now there is a pit kiln process. The raw materials are carbonized, kept warm and cooled in sequence through the pit-type caves that can be sealed in sections, which reduces labor intensity, reduces smoke emissions, and shortens the production cycle. However, its process rout...

AI Technical Summary

Problems solved by technology

Most of the current production practices still use the traditional earthen kiln charcoal firing process to produce biomass charcoal. It takes 10-15 days from kiln installation to charcoal discharge. The production cycle is long, energy consumption is large, and flue gas pollution is serious.

Now there is a tunnel kiln process, the raw materials are carbonized, kept warm and cooled in sequence through the tunnel-type caves that can be sealed in sections, which reduces labor intensity, reduces smoke emissions, and shortens the production cycle, but its process route makes it economical. The consumption of raw materials in operation is extremely astonishing, and the investment in equipment is huge, so it is difficult to popularize and apply it in the carbon production industry

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