CN-118995243-B - Electromagnetic heating type charcoal gasification system

CN118995243BCN 118995243 BCN118995243 BCN 118995243BCN-118995243-B

Abstract

The invention relates to the technical field of biomass and high-heat-value solid waste material treatment, and provides an electromagnetic heating type carbon gasification system which comprises a carbon gasification device, wherein the carbon gasification device comprises a carbon gasification pipe, a core rod, an electromagnetic heating device and a sealing feeding device, wherein the carbon gasification pipe comprises a first end and a second end which are arranged along the axial direction, the first end is provided with a feeding port, the second end is provided with a solid product outlet and a gaseous product outlet, the core rod is coaxially arranged in the carbon gasification pipe, one end facing the feeding port is provided with a conical head, an interlayer cavity is formed between the core rod and the inner wall of the carbon gasification pipe, the electromagnetic heating device comprises an excitation power supply and an excitation coil arranged on the periphery of the carbon gasification pipe, and the discharging end of the electromagnetic heating device is connected with the feeding port of the carbon gasification pipe. The device reduces the requirements on the moisture and the particle size of the carbonized materials, improves the processing capacity of the carbonized materials and the gasification capacity of the carbon, can realize the accurate control of the temperature of the carbon gas in addition by an electromagnetic heating mode, and avoids the problem that waste gas is generated by adopting combustible gas or auxiliary fuel for combustion and heating in the gasification process of the carbon.

Inventors

FANG XUDONG
SHENG GUOHONG
FANG JIAWEI
Fang Yuelin
SHI HUAGEN
HU LINFEI
ZHANG HANWEN
ZOU SHENGNAN
SHAO HUAFENG

Assignees

杭州锦江集团有限公司

Dates

Publication Date: 20260505
Application Date: 20240926

Claims (8)

1. An electromagnetic heating type carbon gasification system is characterized by comprising a carbon gasification device; The char gasification device includes: A char gasification tube (1) comprising a first end and a second end in the axial direction, the first end being provided with a feed inlet, the second end being provided with a solid product outlet and a gaseous product outlet; the core rod (2) is coaxially arranged in the carbon gasification pipe (1), and one end facing the feed inlet is provided with a conical head, and an interlayer cavity for passing materials is formed between the core rod (2) and the inner wall of the carbon gasification pipe (1); an electromagnetic heating device (3) comprises an excitation power supply (3-1) and an excitation coil (3-2) arranged on the periphery of the carbon gasification tube (1) and used for heating the tube wall of the carbon gasification tube (1); the discharging end of the sealing feeding device is connected with the feeding port of the carbon gasification pipe (1); The sealing feeding device comprises a sealing feeding screw (4), the carbon gasification pipe (1) and the sealing feeding screw (4) are coaxially arranged, and a first cavity section (4-3) with a preset length is arranged at the discharge end of the sealing feeding screw (4).
2. An electromagnetically heated char gasification system according to claim 1, characterized in that said core rod (2) is detachably connected to said char gasification pipe (1).
3. The electromagnetic heating type charcoal gasification system according to claim 1, further comprising a cooling conveyor and a charcoal bin (7); the feeding end of the cooling and conveying device is connected with the solid product outlet, the discharging end of the cooling and conveying device is connected with the carbon bin (7) and is used for cooling and conveying the solid product discharged by the carbon gasification pipe (1) to the carbon bin (7) for storage.
4. An electromagnetic heating type charcoal gasification system according to claim 3, further comprising a dust removal module, a dust transport module and a charcoal powder bin (9); the gas inlet of the dust removal module is connected with the gaseous product outlet, and the dust outlet is connected with the carbon powder bin (9) through the dust conveying module.
5. The electromagnetic heating type charcoal gasification system according to claim 4, characterized in that the dust removal module comprises a cooling dust removal device (10); the cooling and dedusting device (10) comprises a tower body (10-1) and a heat exchange tube (10-3) arranged in the tower body (10-1), wherein the top of the tower body (10-1) is provided with an air inlet, the bottom of the tower body is provided with an air outlet and a first carbon powder collecting hopper (10-2), and a capacity expansion section is arranged between the air inlet of the tower body (10-1) and the first carbon powder collecting hopper (10-2), and the heat exchange tube (10-3) is connected with a circulating cooling module (8); The dust conveying module comprises a first carbon powder conveying screw (11), the feeding end of the first carbon powder conveying screw (11) is connected with the first carbon powder collecting hopper (10-2), and the discharging end of the first carbon powder conveying screw is connected with the carbon powder bin (9).
6. The electromagnetic heating type carbon gasification system according to claim 5, wherein an exhaust cavity (10-4) is arranged between the tower body (10-1) and the first carbon powder collecting hopper (10-2), the exhaust cavity (10-4) and the tower body (10-1) are coaxially arranged, the flow section of the exhaust cavity (10-4) is larger than that of the tower body (10-1), and a flow equalizing pore plate (10-5) is covered at the communication part of the exhaust cavity (10-4) and the tower body (10-1).
7. The electromagnetic heating type carbon gasification system according to claim 5, wherein the dust removing module comprises a cloth bag dust removing device (12), an air inlet of the cloth bag dust removing device (12) is connected with an air outlet of the cooling dust removing device (10), and a second carbon powder collecting hopper (12-1) is arranged at the bottom of the cloth bag dust removing device (12); the dust conveying module comprises a second carbon powder conveying screw (13), the feeding end of the second carbon powder conveying screw (13) is connected with the second carbon powder collecting hopper (12-1), and the discharging end of the second carbon powder conveying screw is connected with the carbon powder bin (9).
8. The electromagnetic heating type charcoal gasification system according to claim 4, further comprising a tar processing device (14), wherein one end of the tar processing device (14) is provided with an air inlet end, the other end is provided with an air outlet end, the air inlet end of the tar processing device (14) is connected with the gaseous product outlet, and the air outlet end is connected with the dust removal module; The tar treatment device (14) comprises a plurality of heating pipes (14-1) which are arranged in parallel and an excitation coil (3-2) which is arranged on the periphery of the heating pipes (14-1), wherein the excitation coil (3-2) is electrically connected with the excitation power supply (3-1), one ends of the heating pipes (14-1) are connected with the air inlet end of the tar treatment device (14), and the other ends of the heating pipes are connected with the air outlet end of the tar treatment device (14).

Description

Electromagnetic heating type charcoal gasification system Technical Field The invention relates to the technical field of biomass and high-heat-value solid waste material treatment, in particular to an electromagnetic heating type charcoal gasification system. Background Biomass anaerobic charcoal gasification process, also called biomass carbonization technology, refers to a process in which biomass raw materials are heated to decompose organic substances therein under anaerobic or low-oxygen environment, and finally residues (i.e. biochar) based on fixed carbon are left. In this process, non-carbon materials in the biomass feedstock are removed, producing a large amount of volatiles and bio-oil, while simultaneously producing biochar. The process is mainly characterized in that a shell type heat-insulating heating furnace is arranged outside a rotating drum, the outer wall of the drum is directly burnt and heated by combustible gas or auxiliary fuel, the materials in the drum are subjected to carbonization and pyrolysis through heat transfer of the drum wall, carbon substances and combustible gas are generated, and flue gas generated by combustion is discharged into the atmosphere after being cooled and purified by a heat exchange device. However, in the related art, the drum-type carbon gasification device has high requirements on moisture (less than or equal to 15 percent) and particle size (less than or equal to 20 mm) of carbonized materials, so that the pretreatment and purchase cost of the materials are increased, and in addition, the strength of the rotating carbonized drum is reduced due to alternating stress under high-temperature heating, so that the service life is shortened. Disclosure of Invention The invention provides an electromagnetic heating type carbon gasification system, which is used for solving the defects that a carbon gasification device in the prior art has high requirements on moisture and particle size of carbonized materials and short service life, reducing the requirements on moisture and particle size of the carbonized materials, improving the processing capacity of the carbonized materials and the carbon gasification capacity, being not influenced by alternating stress in the working process and having long service life. The invention provides an electromagnetic heating type carbon gasification system, which comprises a carbon gasification device; The char gasification device includes: The carbon gasification pipe comprises a first end and a second end along the axial direction, wherein the first end is provided with a feed inlet, and the second end is provided with a solid product outlet and a gaseous product outlet; The core rod is coaxially arranged in the carbon gasification pipe, and one end of the core rod, which faces the feed inlet, is provided with a conical head; The electromagnetic heating device comprises an excitation power supply and an excitation coil arranged on the periphery of the carbon gasification tube and is used for heating the tube wall of the carbon gasification tube; And the discharging end of the sealing feeding device is connected with the feeding port of the carbon gasification pipe. According to the electromagnetic heating type carbon gasification system provided by the invention, the sealing feeding device comprises a sealing feeding screw, and the carbon gasification pipe and the feeding sealing screw are coaxially arranged. According to the electromagnetic heating type charcoal gasification system provided by the invention, the discharge end of the sealing feeding screw is provided with a first cavity section with a preset length. According to the electromagnetic heating type carbon gasification system provided by the invention, the core rod is detachably connected with the carbon gasification pipe. The invention provides an electromagnetic heating type carbon gasification system, which further comprises a cooling conveying device and a carbon bin; The feeding end of the cooling and conveying device is connected with the solid product outlet, the discharging end of the cooling and conveying device is connected with the carbon bin and used for cooling and conveying the solid product discharged by the carbon gasification pipe to the carbon bin for storage. The invention provides an electromagnetic heating type carbon gasification system, which further comprises a dust removal module, a dust conveying module and a carbon powder bin; the gas inlet of the dust removal module is connected with the gaseous product outlet, and the dust outlet is connected with the carbon powder bin through the dust conveying module. According to the electromagnetic heating type carbon gasification system provided by the invention, the dust removal module comprises a cooling dust removal device; the cooling and dedusting device comprises a tower body and a heat exchange tube arranged in the tower body, wherein the top of the tower body is provided with an air inlet,