Preparation device of charcoal with biomass as raw material

Abstract

The invention belongs to the technical field of equipment manufacture in energy engineering and relates to a preparation device of charcoal with biomass as a raw material. The preparation device belongs to a vertical kiln, which can realize continuous production and has a multi-level chain belt structure. Multilevel fire grates of the preparation device are classified up and down, and pyrolysis gas is introduced to a combustion chamber arranged outside a vertical furnace and is used for firing and releasing heat in a high-temperature environment of gas combustion; and the cascade utilization of heat energy of heat source smoke is realized when the heat source smoke flows by charcoal preparation fuel on each level of heated fire grate, and inhalable particles, tar particles and the like contained in the heat source smoke are filtered by each fuel layer. A tunnel charcoal burner of the vertical furnace has higher thermal efficiency, meets the requirement of environment friendliness, is adjustable in production capacity and can replace small-and-medium-sized periodic-production charcoal burners and large-scale tunnel kilns, thus having good application prospect and environmental benefits; and according to the preparation device, the integral structure is reasonable, the operation and use are simple, the charcoal firing process is scientific, the energy conservation property is good, the quality of fired charcoal is good, the performance is good, and the economic benefits are obvious.

Description

Technical field: [0001] The invention belongs to the technical field of equipment manufacturing in energy engineering, and relates to a charcoal furnace with vertical continuous production and step-by-step heating control, especially a biomass raw material that uses straw or its molding fuel, fruit tree branches, etc. as combustion materials The charcoal preparation device can continuously produce high-quality charcoal. It is a low-energy consumption and low-pollution conversion equipment for charcoal production technology, and belongs to environmental protection and energy-saving technical equipment. Background technique: [0002] China has a long history of mass production and utilization of charcoal. During the Shang and Zhou dynasties, the charcoal industry began with the rise of the copper smelting industry. Charcoal has unique uses in industry. For example, in the non-ferrous metallurgical industry, carbon is used as a deoxidizer in the process of copper refining, and...

AI Technical Summary

Problems solved by technology

Because the production of charcoal belongs to the type of high energy consumption and high pollution, the earth kiln charcoal furnace commonly used in the production of charcoal has low thermal efficiency, long carbon production cycle, and uneven charcoal quality; The loss of heat also carries inhalable particles, tar and other polluting components to the environment, which brings serious environmental hazards

In recent years, our country has paid more attention to the ecological environment and the environmental protection indicators have become increasingly strict. The use of small workshop-style charcoal earthen kilns has been restricted, and the large-scale tunnel kiln-type charcoal production technology belongs to the continuous production horizontal kiln, which covers a large area and has horizontal smoke. The charcoal raw material on the chain belt in the road is heated and pyrolyzed by the countercurrent or downstream hot flue gas. The chain belt is graded before and after. To ensure the uniformity of material heating, although some existing furnaces have realized mechanized feeding and discharging, high degree of automation, and continuous production, the heat source for preparing charcoal is the hot flue gas generated by external fuel combustion or partial combustion of charcoal raw materials, flue gas The pyrolysis gas released during the charcoal production process leaves the furnace, and its sensible heat is generally recovered, but the calorific value of the pyrolysis gas has not been utilized, and its thermal efficiency still has a large room for improvement

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