Carbonizing system and carbonizing process of wood materials

Abstract

The invention discloses a carbonizing system of wood materials. The carbonizing system of wood materials comprises a carbonizing device and a by-product recovery device, wherein the carbonizing device comprises a reaction vessel and a reaction chamber for putting the reaction vessel; the reaction vessel comprises a material shelf and a destructive distillation kettle for putting the material shelf; the destructive distillation kettle is composed of a destructive distillation kettle body and a destructive distillation kettle cover; an exhaust hole and a temperature measuring hole are arranged on the destructive distillation kettle cover; the reaction chamber comprises a calcining chamber with a combustion area, a carbonizing chamber, a pre-heating chamber which are sequentially arranged, a drying chamber and a cooling chamber for pre-treatment and post-treatment of wood materials respectively. The pre-heating chamber, the carbonizing chamber and / or the exhaust hole on the destructive distillation kettle cover in the calcining chamber are connected with the by-product recovery device. The system is suitable for carbonizing production of all wood materials such as tree wood, hard weed tree, bamboo material, forestry and agricultural residues (straw, shell, sawdust and on the like). The invention is scientific and rational in process, none in emission and pollution, short in production period and low in cost, thereby being suitable for popularization and application.

Description

technical field [0001] The invention relates to a carbonization device and process, in particular to a carbonization system and a carbonization process for wood raw materials. Background technique [0002] Wood or woody raw materials decompose at a certain temperature under the condition of isolation from air to produce charcoal, and by-products include: wood tar, wood vinegar, and wood gas. Charcoal is impure, amorphous carbon that preserves the original structure of wood and the tar residue in its pores. It is widely used as industrial metallurgical reducing agent and fuel, and also plays an important role in the fields of water purification, pollutant adsorption, conductivity and electromagnetic shielding. Wood tar is a useful product in veterinary medicine and also as a preservative, wood preservative and caulking material. The composition of wood vinegar is extremely complex, and its main components are water, acetic acid, methanol and acetone, etc. The main componen...

AI Technical Summary

Problems solved by technology

The disadvantages of this system are: the combustion flue gas is emptied without fully heating the retort, and the energy utilization rate is low; there is no separate wood drying equipment, and the wood is directly put into the retort for reaction, which increases the energy consumption of the carbonization reaction and the recovery of by-products difficulty

However, the above-mentioned carbonization system still has many disadvantages: as the flue gas passes through the retort and then transfers heat to the internal wood, the heat transfer efficiency is low, thereby increasing fuel consumption and prolonging the production cycle; using natural cooling, the cooling speed is slow and energy consumption is low. underutilized etc.

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