CN-121182523-B - Low-temperature biomass gasifier and dry carbon and gas coupled boiler burning process

Abstract

The application discloses a low-temperature biomass gasification furnace and a dry carbon and gas coupling boiler process, which belong to the technical field of biomass gasification furnaces and comprise a top plate, an upper cylinder, a middle cylinder, a lower cylinder and a discharging cylinder, wherein the top plate, the upper cylinder, the middle cylinder, the lower cylinder and the discharging cylinder are sequentially arranged from top to bottom, the five cylinders are connected through assembly, the outside of a gasification furnace main body is supported by a supporting unit, and a discharging unit connected through an auxiliary transition cylinder is arranged at the bottom of the gasification furnace main body and used for discharging. The auxiliary transition cylinder is clamped with the outer part of the discharging cylinder of the gasification furnace main body, a stable transition channel is provided for carbon residue, the carbon residue falling down from the discharging cylinder can smoothly enter the auger conveyor, the carbon residue is prevented from accumulating, blocking or splashing outwards at a discharging opening, and the whole structure of the equipment is more compact and reasonable due to the design.

Inventors

• XU WENJIE
• XIE ZHIXIONG

Assignees

• 常州市恒宁能源设备有限公司

Dates

Publication Date

20260508

Application Date

20251023

Claims (4)

1. 1. The utility model provides a low temperature biomass gasification stove, its characterized in that includes gasifier main part (1), and it includes roof (11), goes up barrel (12), middle barrel (13), lower barrel (14) and unloading barrel (15), set gradually from top to bottom between roof (11), last barrel (12), middle barrel (13), lower barrel (14) and unloading barrel (15), and pass through the assembly connection between two liang of five, the outside of gasifier main part (1) is supported through supporting element (2) the bottom of gasifier main part (1) is provided with discharge unit (3) through supplementary transition barrel (7) connection for go out the material, the inside of discharge unit (3) is provided with second cooling unit (10), be provided with first cooling unit (9) in unloading barrel (15); The diameter of the upper cylinder body (12), the diameter of the middle cylinder body (13) and the diameter of the lower cylinder body (14) are the same, the installation cover (4) is distributed outside the middle cylinder body (13) at equal angles, a suspension unit (8) is arranged inside the installation cover (4) and used for suspension work, a blanking cylinder body (15) at the bottom of the lower cylinder body (14) is arranged in a conical structure and is arranged in a double-layer conical structure, a first cooling unit (9) is arranged inside the double-layer conical structure, and an installation unit (5) is further arranged at the top end inside the blanking cylinder body (15); The top of installation cover (4) is provided with the dismantlement board, and the inside suspension unit (8) of installation cover (4) include driving motor (81), supporting seat (82), around rolling up unit (83) and hang lifting hook (84), the both sides of rolling up unit (83) are supported spacing by supporting seat (82), and run through supporting seat (82) and be connected with driving motor (81) around one side of rolling up unit (83), the outside winding of rolling up unit (83) has the cable, and the top of cable is connected with the erection cylinder of hanging lifting hook (84) bottom, the erection cylinder of hanging lifting hook (84) bottom carries out the block with the cylinder hole on the installation cover (4) top dismantlement board; The mounting unit (5) comprises a connecting rod (51), a middle seat (52) and a driving unit (53), wherein the connecting rod (51) is arranged at equal intervals, the outer side of the connecting rod is welded with the inner wall of the blanking cylinder (15), the inner side of the connecting rod is connected with the middle seat (52) through a bearing, the middle seat (52) is of a cylindrical structure with a hollowed bottom, the driving unit (53) is arranged at the bottom of the middle seat, and the grate unit (6) is arranged at the top end of the outer part of the middle seat (52); The fire grate unit (6) comprises a fire grate main body (61), a fire grate base (62), fixed tooth blocks (63) and hanging rods (64), wherein the fire grate main body (61) and the fire grate base (62) are integrally installed, the bottom of the fire grate base (62) is clamped with the outer part of the middle base (52), the fire grate base (62) and the middle base are limited through a limiting mechanism, the fixed tooth blocks (63) are uniformly distributed on the surface of the inner wall of the fire grate base (62), the fixed tooth blocks (63) correspond to the driving units (53) and are driven and controlled by the driving units (53).
2. 2. The low-temperature biomass gasification furnace according to claim 1, wherein the top plate (11) comprises a mounting ring (111), a sealing plate (112), a feed inlet (113) and an exhaust barrel (114), the outer side of the mounting ring (111) is detachably mounted with the top end of the upper barrel (12), a circular opening is formed in the middle of the mounting ring (111), the caliber of the circular opening is larger than that of the grate unit (6), the sealing plate (112) is detachably mounted at the top end of the mounting ring (111), and the feed inlet (113) and the exhaust barrel (114) are respectively arranged at the top end of the sealing plate (112) and are used for feeding raw materials and discharging combustible gas.
3. 3. The low-temperature biomass gasification furnace according to claim 2, wherein the discharging unit (3) comprises a fixed shell (31), a mounting cover plate, a driving assembly and a conveying auger (32), the top end of the fixed shell (31) is sealed through the mounting cover plate, the conveying auger (32) is arranged in the fixed shell (31), the conveying auger (32) is controlled and driven by the driving assembly, a top end connecting port is arranged at the top end of one side of the mounting cover plate and used for being connected with the bottom of the auxiliary transition cylinder (7), and a bottom connecting port is arranged at the bottom of the fixed shell (31) and used for conveying and discharging cooled dry carbon.
4. 4. The low-temperature biomass gasifier of claim 3, wherein the limiting mechanism comprises a limiting groove, limiting blocks and a rotary ring, the limiting grooves are distributed on the outer wall of the middle seat (52) at equal angles, the limiting blocks are distributed outside the rotary ring on the surface of the middle seat (52) at equal angles and are in sliding clamping in the limiting grooves, the rotary ring is connected with the grate base (62) through a bearing, the top end of the auxiliary transition cylinder (7) is detachably mounted with the supporting unit (2), the whole auxiliary transition cylinder is in a circular truncated cone structure, the clamping is arranged outside the blanking cylinder (15), and the bottom of the auxiliary transition cylinder (7) is detachably mounted with a top end connecting port above the mounting cover plate.

Description

Low-temperature biomass gasifier and dry carbon and gas coupled boiler burning process Technical Field The application relates to the technical field of low-temperature gasification furnaces, in particular to a low-temperature biomass gasification furnace and a dry carbon and gas coupled boiler burning process. Background The low-temperature gasification furnace is a device for converting biomass and other organic matters into combustible gas at a lower temperature, can convert biomass (such as wood chips, rice hulls, crop straws and the like) into the combustible gas, such as carbon monoxide (CO), hydrogen (H 2), methane (CH 4) and the like, and through the gasification process, the energy in the biomass is efficiently converted into the combustible gas, so that the problems of heat loss and incomplete combustion during direct combustion of the biomass are reduced, meanwhile, waste biomass resources are converted into valuable energy sources, the dependence on traditional fossil fuels is reduced, the economic and social benefits are remarkable, and the low-temperature gasification furnace has wide development prospect as an efficient biomass energy conversion device along with the increasing global demand for renewable energy sources. At this stage, organic substances such as cellulose, lignin and the like in the biomass begin to decompose to generate combustible gases such as carbon dioxide, carbon monoxide, hydrogen, methane and the like, and a small amount of tar and solid carbon are generated at the same time, and then the biomass enters a redox stage, and at this stage, carbon in the biomass and gasifying agents (such as air, oxygen, water vapor and the like) undergo a redox reaction to further generate the combustible gases, and the generated combustible gases undergo a series of reactions at a relatively high temperature and need to be subjected to cooling treatment. The cooled gas can be conveyed to a subsequent boiler or kiln burner through a pipeline for combustion, the carbon residue generated by combustion adopts a wet carbon residue process, the generated byproduct carbon residue is discharged through a water-filled stove plate, is changed into wet carbon residue through soaking by water, falls into a three-wheeled cart from a baffle below a fire grate, is fully pushed to a carbon warehouse manually afterwards, or falls into a belt conveyor after being discharged and is conveyed to the carbon warehouse for manual piling, and is pulled away by a solid waste treatment plant or a power plant after being piled to a certain amount, such as a slag discharging mode disclosed in a wet slag discharging device of a biomass gasification furnace in application number 202210401414. X. However, the wet carbon residue is adopted to carry out carbon yielding, because the wet carbon residue has high moisture content, the overall calorific value is low, the wet carbon residue cannot be reused, the economic value is realized, the cost of solid waste treatment is high, a wet carbon residue storage yard is occupied, the field environment is poor, the wet carbon residue collection and stacking treatment consumes labor, the labor cost is increased, and secondly, the biomass raw materials can generate impurities such as ash, tar and the like in the combustion process, the impurities can be attached to a grate, the ventilation and heat exchange effect of the grate is affected, the combustion efficiency and the service life of a stove are further reduced, and the grate is required to be cleaned and maintained regularly, but because the installation position of the grate is positioned at the position below the stove body, inconvenience is brought to the maintenance and overhaul work of personnel. Disclosure of Invention One of the purposes of the application is to solve the problems that the biomass gasification furnace in the current market adopts the wet carbon residue technology to carry out carbon production, the wet carbon residue has low overall calorific value and cannot be reused due to high water content, the economic value of the biomass gasification furnace is realized, the cost of solid waste treatment is high, the wet carbon residue storage yard is occupied, the site environment is poor, the wet carbon residue collection and stacking treatment consumes manpower, and the labor cost is increased. In order to achieve the purpose, the low-temperature biomass gasifier comprises a gasifier main body, wherein the gasifier main body comprises a top plate, an upper cylinder body, a middle cylinder body, a lower cylinder body and a discharging cylinder body, the top plate, the upper cylinder body, the middle cylinder body, the lower cylinder body and the discharging cylinder body are sequentially arranged from top to bottom, the fifth cylinder body, the lower cylinder body and the discharging cylinder body are connected through assembly, the outer parts of the gasifier main body are supported through supporting units