Internal heating type biomass carbonization furnace capable of recycling flue gas

Abstract

The invention discloses an internal heating type biomass carbonization furnace capable of recycling flue gas. The carbonization furnace comprises a furnace body, a furnace cover is arranged at the top of the furnace body, a preheating box, a partition plate and a carbonization chamber are arranged in the furnace body, and a combustion chamber is arranged in the carbonization chamber; the side wall of the preheating box is provided with an interlayer, the interlayer is provided with a smoke outlet extending to the outside of the furnace body, the bottom of the preheating box is in the shape of a cone protruding upwards, the bottom of the preheating box is provided with a discharging opening, and a gate plate is arranged at the discharging opening; a smoke exhaust pipe extending to the interlayer is arranged at the top of the combustion chamber, a discharging pipe is arranged on the upper portion of the combustion chamber and connected with a discharging bin arranged on the outer side wall of the furnace body, an air outlet pipe frame is arranged on the upper portion in the combustion chamber, an air outlet is formed in the air outlet pipe frame, an ash outlet is formed in the bottom of the combustion chamber, and a first material valve is arranged at the ash outlet; and an exhaust pipe is arranged on the side wall of the furnace body and comprises a pipe body, and an air inlet, a first outlet and a second outlet are formed in the pipe body. Biomass raw materials needing to be carbonized can be efficiently carbonized, and the carbonization furnace has the advantages of energy conservation and environmental protection.

Description

technical field [0001] The invention relates to the technical field of biomass carbonization, in particular to an internal heating type biomass carbonization furnace for flue gas reuse. Background technique [0002] my country's biomass resources are very rich, and a large amount of crop straw is produced every year. Due to the lack of feasible treatment and application technology, except for a small part used as feed, fuel and industrial fuel, most of them are directly burned in the field, causing serious environmental pollution. Pollution. In addition, some stalks are directly discarded, wasting precious natural resources. The natural decay of discarded straw, rice husk and other biomass materials will produce serious CH4, which seriously damages the ozone layer and aggravates global climate change. Therefore, there is an urgent need to develop environmentally friendly, cost-effective treatment devices and utilization methods based on agricultural and forestry waste. [...

AI Technical Summary

Problems solved by technology

Low conversion efficiency and serious energy consumption

At present, some carbonization equipment is relatively simple, and there are problems such as high production cost, high energy consumption and low carbon yield.

Moreover, there is no flue gas recovery and utilization device, and the gas generated during the carbonization process is directly discharged into the atmosphere, which is likely to cause secondary pollution

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