Method for producing biomass carbonization carbon and biomass gas, and rapid thermal decomposition coke oven

Abstract

The invention relates to a method for producing biomass dry distillation carbon and biomass fuel gas and a rapid pyrolysis carbonized oven, materials of biomass straw, and tree branches, etc. are utilized to be added into the oven through a material filling pipe mouth, after the over is filled with the materials, an air inlet pipe mouth arranged at the bottom part of a gasification reaction chamber in the oven is opened, a negative pressure Roots blower fan arranged outside the oven is started, a oven door arranged at the lower part of the gasification reaction chamber is opened, the oven door is closed after gasification materials filled at the lower part of the gasification reaction chamber are ignited, generated combustible gas in the gasification reaction chamber is sucked to be diffused in a dry distillation carbonized chamber arranged on the periphery of the gasification reaction chamber through a fuel gas diffusing opening arranged at the upper part of a gasification chamber, thus carbonized materials are retorted into biomass carbon, simultaneously after methane, carbon monoxide, hydrogen, and hydrocarbon ChHmm in volatile component are released to be mixed with the flue gas generated in the gasification reaction chamber, the heat value of the flue gas is as high as about 6000 kJ / m3, after the purification and the treatment, the flue gas is the clean, inexpensive, and good quality biomass flue gas used for a flue gas electric generator group to generate power or provided for the burning of town dweller.

Description

technical field [0001] The invention relates to a method of setting a dry distillation carbonization chamber in a furnace for agricultural and forestry waste such as biomass straws, branches, fruit shells, and rice husks, and setting a gasification reaction chamber in the middle of the dry distillation carbonization chamber to produce biomass dry distillation charcoal and Biomass gas method and fast pyrolysis carbonization furnace. Background technique: [0002] In the production method of the double-cavity carbonization furnace in the prior art, an independent gasification furnace chamber and a carbonization furnace chamber are arranged side by side in the furnace, and agricultural waste such as biomass straw is processed, chopped and dried during operation. Adding separate gasification furnace cavity and carbonization furnace cavity respectively, sucking the high-temperature gas generated in the gasification furnace cavity into the carbonization furnace cavity next to it, ...

AI Technical Summary

Problems solved by technology

[0002] In the production method of the double-cavity carbonization furnace in the prior art, an independent gasification furnace chamber and a carbonization furnace chamber are arranged side by side in the furnace, and agricultural waste such as biomass straw is processed, chopped and dried during operation. Adding separate gasification furnace cavity and carbonization furnace cavity respectively, sucking the high-temperature gas generated in the gasification furnace cavity into the carbonization furnace cavity next to it, carbonizing the material into biomass charcoal and biomass gas , the composition of biochar produced by this method is basically the same as that of wood charcoal. However, there are still some defects in the industrial operation as follows: since the gasification furnace chamber and the carbonization furnace chamber in the furnace are set separately and side by side, they will be separated from each other during operation. When the high-temperature gas generated in the gasification furnace cavity enters the adjacent carbonization furnace cavity to dry-distill carbonized materials, the high-temperature gas drawn into the carbonization furnace cavity is unevenly distributed due to the long distance between the two furnace chambers. The carbonization effect on the side where the two chambers are close is ideal, but on the other side where the two chambers are far away, the carbonization effect is not ideal due to insufficient diffusion of high-temperature gas, and the phenomenon of half-generated charcoal occurs, so the quality of the carbonized product is unstable.

[0003] Due to the large volume of the gasification furnace chamber and the carbonization furnace chamber that are arranged side by side in the furnace, the amount of steel consumed is large, and the cost of the furnace body is high. Strictly require the performance of sealed operation to be poor, resulting in greater unsafe factors

[0004] In the prior art, there are also methods for producing biomass carbonization gas and a backfire biomass carbonization gas generator. After molding, they are respectively added to the upper gasification chamber and the lower carbonization chamber set in the furnace. During operation, the high-temperature gas generated in the upper gasification chamber in the furnace is directly sucked into the lower carbonization chamber of the furnace to dry-distill the carbonized materials. Carbonization produces biochar, and at the same time releases methane CH in volatile components 4 , hydrogen H 2 , Hydrocarbon C h Hmm and other high-calorific hydrocarbons are mixed with the gas entering the gasification chamber on the upper layer of the furnace, and the calorific value in the gas is as high as 5000-6000kJ / m 3 , the biomass charcoal and biomass gas produced by this method are ideal, but there are still some difficulties and defects in the manufacturing process of the furnace, because the furnace is equipped with an upper gasification chamber and a lower carbonization chamber. The rows are all operating at high temperature, and the quality requirements for the high-temperature resistant stainless steel materials used are high, the price is expensive, and the manufacturing process of the furnace body is complicated.

Images