JP-2026076146-A - A system that produces biochar by smoking biomass until it is thermally decomposed.

JP2026076146AJP 2026076146 AJP2026076146 AJP 2026076146AJP-2026076146-A

Abstract

[Problem] This invention discloses a system for producing biochar by smoking biomass until it is thermally decomposed. [Solution] The system includes a smoking furnace and a pyrolysis furnace, the smoking furnace including a first outlet, a first intake port, and a first exhaust port, and a pyrolysis chamber is provided inside the pyrolysis furnace, the pyrolysis chamber including a feed port, a second outlet, and a second exhaust port, where the feed port communicates with the first outlet and the second exhaust port communicates with the first intake port. Thus, the present invention promotes the direct condensation and adhesion of condensable volatile substances in the pyrolysis gas to the biomass by constantly using the pyrolysis gas to smoke the biomass, and then improves the yield and carbon retention rate of biochar through the co-thermolysis of bio oil and biomass, thereby sealing more carbon elements into the biochar and achieving the effect of carbon fixation. [Selection Diagram] Figure 1

Inventors

▲祁▼ ▲風▼雷
王 ▲紹▼▲倫▼
▲張▼ 双林
▲馬▼ 培勇
▲ダオ▼ 瑞
▲査▼ 振▲ティン▼
▲劉▼ 小好
▲ヤン▼ ▲東▼旭

Assignees

合肥工▲業▼大学

Dates

Publication Date: 20260511
Application Date: 20251023
Priority Date: 20241023

Claims (9)

This is a system that produces biochar by smoking biomass until it is thermally decomposed. A smoking furnace including a first exhaust port, a first intake port, and a first exhaust port, A pyrolysis furnace comprising a pyrolysis chamber provided within the pyrolysis furnace, the pyrolysis chamber provided with a feed port, a second discharge port, and a second exhaust port, wherein the feed port communicates with the first discharge port and the second exhaust port communicates with the first intake port, A system for producing biochar by smoking biomass until it is thermally decomposed.
The smoking furnace includes a first feed case, a first rotating furnace body, and a first discharge case, the ends of which are dynamically sealed and connected to the first feed case and the first discharge case, respectively, the first discharge port and the first intake port are provided in the first discharge case, and the first exhaust port is provided in the first feed case. A system for producing biochar by smoking the biomass described in item 1 until it is thermally decomposed.
The first rotary furnace body includes an inner furnace body and an outer furnace body, and a condensation cavity is provided between the inner furnace body and the outer furnace body. A system for producing biochar by smoking biomass according to feature 2 until it is thermally decomposed.
The condensation cavity includes a first condensation region and a second condensation region, wherein the temperature of the first condensation region is lower than the temperature of the second condensation region, the first condensation region is located on the side closer to the first feed case, and the second condensation region is located on the side closer to the first discharge case. A system for producing biochar by smoking biomass according to feature 3 until it is thermally decomposed.
The system for producing biochar by smoking biomass until it is thermally decomposed, as described in claim 3, is characterized in that a material scooping plate is provided on the inner wall of the inner furnace body.
A system for producing biochar by smoking biomass until it is thermally decomposed, characterized in that a hollow heat conduction chamber is provided within the material scooping plate, and the heat conduction chamber and the condensation cavity are in communication.
The invention further includes a burner, the burner including an intake port and an exhaust port, the intake port communicating with the first exhaust port and the exhaust port communicating with the pyrolysis chamber. A system for producing biochar by smoking the biomass described in item 1 until it is thermally decomposed.
The burner further includes a fuel inlet, a sludge outlet, and a mesh plate, wherein the mesh plate is provided above the air intake, the fuel inlet is provided on one burner side wall of the mesh plate, and the sludge outlet is provided on the other burner side wall of the mesh plate. A system for producing biochar by smoking biomass according to feature 7 until it is thermally decomposed.
The pyrolysis furnace includes a second feed case, a second rotary furnace body, and a second discharge case, wherein both ends of the second rotary furnace body are dynamically sealed and connected to the second feed case and the second discharge case, respectively, the feed port is provided in the second feed case, and the second exhaust port and the second discharge port are provided in the second discharge case. A system for producing biochar by smoking the biomass described in item 1 until it is thermally decomposed.

Description

This invention relates to the technical field of biochar, and more particularly to a production system for producing biochar by thermal decomposition. Biomass energy is a widely distributed renewable energy source that is carbon neutral and can balance CO2 emissions and absorption. While biomass can be directly converted into fuel, its high moisture content, low energy density, large volume, high fiber content, poor abrasiveness, and poor uniformity make it difficult to transport, resulting in high costs and seasonal limitations, which restrict its broader applications. Pyrolysis, as a biomass processing and fuel upgrade technology, can improve the properties of the raw material itself and produce energy and chemical products. Pyrolysis typically converts biomass into three phase products: gas, liquid, and solid. The yield of these three phase products is controlled by changing parameters of the pyrolysis process, such as the pyrolysis temperature, heating rate, and carrier gas flow rate. Of these three phase products, biochar is the most promising coal substitute due to its excellent fuel properties (high energy density, high calorific value, high carbon content, and low oxygen content). In conventional biomass pyrolysis processes, most of the carbon is transferred to bio-oil and pyrolysis gases, resulting in low biochar yields, limited carbon retention, and poor combustion performance of the resulting biochar, making it economically unviable. Improving the carbon yield and carbon content of biomass allows for the encapsulation of more carbon elements in the biochar, which is crucial for achieving green and sustainable development. Currently, there are mainly two methods for carbon fixation through biomass pyrolysis. First, there are methods that use pressure devices to increase the reaction pressure in the biomass pyrolysis process. However, pressurized pyrolysis is generally a batch process, which cannot satisfy the high efficiency and continuity requirements of biomass pyrolysis carbon fixation technology. Furthermore, the safety of the pressure devices is a technical issue hindering the development of pressurized biomass pyrolysis carbon fixation. Second, there are methods that involve mixing additives with biomass before pyrolysis. However, the use of additives increases industrial production costs and can alter the composition of the biomass pyrolysis products, potentially affecting their subsequent utility. Additionally, some additives may pollute the environment. This is a schematic diagram of a system for producing biochar by smoking biomass until it is thermally decomposed, according to an embodiment of the present invention.This is a schematic diagram 1 of the cross-sectional structure of the first rotary furnace body according to an embodiment of the present invention.This is schematic diagram 2 of the cross-sectional structure of the first rotary furnace body according to an embodiment of the present invention.This is a schematic diagram of the structure of a burner according to an embodiment of the present invention. The following description clearly and completely explains the technical concepts in the embodiments of this disclosure with reference to the drawings in the embodiments of this disclosure. The description of the embodiments is, in practice, merely descriptive and illustrative, and no limitation whatsoever on this disclosure or its application or use shall apply. A person skilled in the art, based on the embodiments of this disclosure, should be able to obtain all other embodiments without any creative work, and these should be within the scope of protection of this disclosure. Furthermore, detailed descriptions of techniques, methods, and apparatus known to the general articulate to those skilled in the relevant field may not be provided; however, where appropriate, such techniques, methods, and apparatus should be considered part of the specification. As shown in Figures 1-4, the system 100 for producing biochar by smoking biomass until it is pyrolyzed according to an embodiment of the present invention includes at least a smoking furnace 1 and a pyrolysis furnace 2. The smoking furnace 1 includes a first discharge port 14, a first intake port 15, and a first exhaust port 15. The pyrolysis furnace 2 contains a pyrolysis chamber, which includes a feed port 24, a second discharge port 25, and a second exhaust port 26. The feed port 24 communicates with the first discharge port 14, and the second exhaust port 26 communicates with the first intake port 15. During use, the biomass raw material enters the smoker 1, then comes into contact with the pyrolysis gas produced by the pyrolysis in the pyrolysis furnace 2. In this process, the pyrolysis gas continuously smokes the biomass, condensing the pyrolysis oil and causing it to adhere to the biomass particles. Finally, the biomass particles with the attached bio-oil undergo pyrolysis in the pyrolysis furnace 2. Specifically, during the