A heating boiler system
By combining internal auger tubes, gasifiers, and waste heat boiler systems, the problems of low combustion efficiency and high carbon emissions in heating boilers have been solved, achieving a high-efficiency, low-cost heating solution that significantly improves heating efficiency and reduces carbon emissions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI XINQIAO THERMAL POWER CO LTD
- Filing Date
- 2025-05-24
- Publication Date
- 2026-06-30
AI Technical Summary
Existing heating boilers have low combustion efficiency and rely on fossil fuels, resulting in high carbon emissions and high operating costs. Traditional improvement methods are either economically infeasible or have high initial conversion costs.
The system employs an internal auger tube, a gasifier, a feed auger, and a waste heat boiler system. The gasifier burns rice husks and wood chips to generate high-temperature flue gas, which is then recovered and used for secondary combustion of incompletely oxidized combustible components. Combined with desulfurization and denitrification devices, this improves combustion efficiency and reduces carbon emissions.
It can significantly improve the thermal efficiency of heating boiler systems by 8%-12%, reduce the content of unburned substances in flue gas, achieve deep energy utilization, reduce carbon emissions, and lower operating costs.
Smart Images
Figure CN224434458U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of heating boiler technology and relates to a heating boiler system. Background Technology
[0002] The main drawbacks of existing heating boilers in terms of high carbon emissions are their low combustion efficiency and reliance on fossil fuels. These shortcomings stem from the limitations of traditional heating boiler design and operation technologies, as well as their dependence on high-carbon-emission energy sources like coal and natural gas. Due to low combustion efficiency, carbon in the fuel cannot be completely converted into heat energy, resulting in a large amount of incompletely burned carbon being emitted into the atmosphere as carbon dioxide, exacerbating the greenhouse effect.
[0003] Conventional solutions include improving boiler combustion efficiency, replacing fossil fuels with clean energy, and installing flue gas treatment equipment to reduce harmful gas emissions. Using clean energy sources such as biomass, geothermal energy, or electricity as heat sources can significantly reduce carbon emissions. Flue gas treatment equipment, such as desulfurization and denitrification devices, can effectively reduce harmful gas emissions; however, these methods also have drawbacks. Improving combustion efficiency and installing flue gas treatment equipment require significant initial investment and operating and maintenance costs, which may be economically infeasible for some small heating systems. While using clean energy is beneficial for reducing carbon emissions in the long term, the initial conversion costs are high, and corresponding infrastructure support is required, such as a stable supply and storage of biomass fuel and the exploration and development costs of geothermal energy. Therefore, there is an urgent need for a heating boiler system to address these issues. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a heating boiler system to solve the problems mentioned in the background technology.
[0005] This utility model is achieved through the following technical solution: a heating boiler system, including: an inner auger pipe, a gasifier, and a material guide auger. The inner auger pipe is provided with a set of material guide augers for introducing rice husks and wood chips as raw materials. A set of gasifiers for gasifying the raw materials is provided on the right side of the material guide augers. Three sets of gasifiers are arranged side by side. Each set of gasifiers is provided with an internal heating air pump on the right side for actively improving the gasification efficiency.
[0006] The upper end of the three gasifiers is equipped with a gasification pipe for transmitting the gasified fuel from rice husks and wood chips. On the right side of the rear end of the gasification pipe is a connecting pipe for introducing the fuel into the waste heat boiler. On the right side of the three gasifiers is a storage tank for storing the biochar produced after the combustion of rice husks and wood chips. First, the workers burn and gasify the rice husks and wood chips through the gasifier, and recover the high-temperature flue gas produced by the combustion. At the same time, the biochar produced by the combustion of rice husks and wood chips can be collected through the storage tank and used as renewable fuel.
[0007] In a preferred embodiment, a set of thermometers is provided at the middle position of the front side of the storage tank, the connecting pipe passes through the inside of the storage tank and is sealed to the connecting conduit, and the connecting conduit and the connecting pipe are integrally formed.
[0008] In a preferred embodiment, the connecting conduit passes through the center of the sealing gate, and a waste heat boiler for secondary combustion of the flue gas from the burning of rice husks and wood chips is provided at the right end of the connecting conduit.
[0009] As a preferred embodiment, the waste heat boiler is provided with a set of gas booster fans at the front and rear ends on the left side for accelerating the conduction of biomass flue gas inside the connecting duct. The pump ends of the two sets of gas booster fans are connected to the inside of the connecting duct.
[0010] In a preferred embodiment, both sets of gas-fired booster fans are bolted to the left side of the waste heat boiler. A set of fuel pump pipes for introducing external fuel is provided at the center of the front side of the waste heat boiler. A set of waste heat pipes for discharging the secondary combustion flue gas from rice husks and wood chips is provided on the right side of the waste heat boiler. A set of heat exchange pipes for water exchange inside the waste heat boiler is provided. A set of steam pipes is provided at the upper end of the heat exchange pipes. The water inlet end of the heat exchange pipes is sealed to the external water source pipe. At the same time, several sets of heat exchange pipes are provided in the waste heat boiler and arranged side by side. The several sets of heat exchange pipes converge and communicate with the steam pipe.
[0011] In a preferred embodiment, a set of denitrification cylinders for desulfurizing and denitrifying the flue gas is provided on the right side of the waste heat pipe. The denitrification cylinder includes a cylinder body, a multi-stage desulfurization filter, a dry powder denitrification layer and an exhaust seat. A set of air guide chambers for desulfurizing and denitrifying the flue gas is provided on the inner side of the cylinder body.
[0012] In a preferred embodiment, the upper end of the air guide chamber is provided with several sets of multi-stage desulfurization filters for desulfurizing flue gas. Each multi-stage desulfurization filter includes a polytetrafluoroethylene (PTFE) membrane filter paper, glass fiber, synthetic fiber, and an activated carbon layer. The multi-stage desulfurization filter also includes a support layer made of metal mesh material. At the lower end of the sets of multi-stage desulfurization filters, a dry powder denitrification layer for denitrifying steam is provided. The bottom of the air guide chamber is provided with an exhaust seat for introducing steam. Simultaneously, the upper end of its denitrification cylinder is connected to an external SDS desulfurization system, SCR denitrification system, and dust collector, and performs multiple denitrification and desulfurization processes on the flue gas. In actual use, when the generated fuel gas is sent into the exhaust gas via a gas booster fan... After entering the hot boiler, the flue gas enters the waste heat boiler for secondary combustion. This secondary combustion injects supplemental oxygen into the high-temperature flue gas zone, allowing the combustible components that were not fully oxidized in the initial combustion stage (such as carbon monoxide, volatile organic compounds, and unburned carbon particles) to complete a chain oxidation reaction in a high-temperature environment. This process ensures that hydrocarbons are completely converted into carbon dioxide and water vapor by extending the residence time of combustible materials in the high-temperature zone, thereby significantly reducing the content of unburned substances in the flue gas. At the same time, the sensible heat released by the secondary combustion can be recovered in stages through radiant heat exchange surfaces or convective heat exchange surfaces, improving the overall thermal efficiency of the system by 8%-12%. Some advanced systems integrate waste heat boilers, which reduce the waste temperature of the flue gas from 900℃ to 200℃ in stages, achieving deep energy utilization.
[0013] After adopting the above technical solution, the beneficial effects of this utility model are: the rice husk and wood chip raw materials are burned and gasified by the gasification furnace, and the high-temperature flue gas generated by the combustion is recovered. At the same time, the biochar generated by the combustion of rice husk and wood chip raw materials can be collected through the storage tank and used as renewable fuel.
[0014] After the generated gas is sent into the waste heat boiler by the gas booster fan, the flue gas enters the waste heat boiler for secondary combustion. The secondary combustion injects supplementary oxygen into the high-temperature flue gas zone, allowing the combustible components that were not fully oxidized in the initial combustion stage (such as carbon monoxide, volatile organic compounds, and unburned carbon particles) to complete a chain oxidation reaction in a high-temperature environment. This process ensures that hydrocarbons are completely converted into carbon dioxide and water vapor by extending the residence time of combustible materials in the high-temperature zone, thereby significantly reducing the content of unburned substances in the flue gas. At the same time, the sensible heat released by the secondary combustion can be recovered in stages through radiant heat exchange surfaces or convective heat exchange surfaces, which improves the overall thermal efficiency of the system by 8%-12%. Some advanced systems integrate waste heat boilers to reduce the waste temperature of the flue gas from 900℃ to 200℃ in stages, achieving deep energy utilization. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a top view of the left oblique front side of a heating boiler system according to the present invention;
[0017] Figure 2 This is a top view of the structure of the feed guide auger and the inner auger pipe in a heating boiler system according to the present invention.
[0018] Figure 3 This is a front view of the internal structure of the denitrification cylinder in a heating boiler system according to the present invention.
[0019] Figure 4 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;
[0020] In the diagram: 100-Inner auger pipe, 110-Gasifier, 120-Inner heating air pump, 130-Gasification pipe, 140-Connecting pipe, 150-Storage tank, 160-Thermometer, 170-Connecting conduit, 180-Gas booster fan, 190-Sealing door, 200-Waste heat boiler, 210-Waste heat pipe, 220-Denitrification cylinder, 230-Guiding auger;
[0021] 22a-Cylinder body, 22b-Multi-stage desulfurization filter, 22c-Dry powder denitrification layer, 22d-Exhaust seat. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-4 As the first embodiment of this utility model:
[0024] A heating boiler system includes: an inner auger tube 100, a gasifier 110, a waste heat boiler 200, a denitrification cylinder 220, and a feed auger 230. The inner auger tube 100 is equipped with a set of feed augers 230 for introducing rice husks and wood chips as raw materials. A set of gasifiers 110 for gasifying the raw materials is provided on the right side of the feed augers 230. Three sets of gasifiers 110 are arranged side by side. Each set of gasifiers 110 is equipped with an internal heating air pump 120 on the right side for actively improving the gasification efficiency.
[0025] The upper end of the three gasifiers 110 is provided with a gasification pipe 130 for transmitting the gas after the raw materials of rice husk and wood chip are gasified. The right side of the rear end of the gasification pipe 130 is provided with a connecting pipe 140 for introducing the gas into the waste heat boiler 200. The right side of the three gasifiers 110 is provided with a storage tank 150 for storing the biochar produced after the raw materials of rice husk and wood chip are burned.
[0026] First, the staff uses the gasifier 110 to burn and gasify the rice husks and wood chips, and recovers the high-temperature flue gas produced by the combustion. At the same time, the biochar produced by burning the rice husks and wood chips can be collected in the storage tank 150 and used as renewable fuel.
[0027] Please see Figures 1-4 As a second embodiment of the present invention: based on the description in the above embodiments, a set of thermometers 160 is provided at the middle position of the front side of the storage tank 150, and the connecting pipe 140 penetrates the interior of the storage tank 150 and is sealed to the connecting conduit 170. The connecting conduit 170 and the connecting pipe 140 are integrally structured.
[0028] The connecting conduit 170 passes through the center of the sealing gate 190, and a waste heat boiler 200 is provided at the right end of the connecting conduit 170 for secondary combustion of the flue gas from the burning of rice husks and wood chips.
[0029] The waste heat boiler 200 has a set of gas booster fans 180 at the front and rear ends on the left side, which are used to accelerate the conduction of biomass flue gas inside the connecting duct 170. The pump ends of the two sets of gas booster fans 180 are connected to the inside of the connecting duct 170.
[0030] Both sets of gas-fired booster fans 180 are bolted to the left side of the waste heat boiler 200. A set of fuel pump pipes for introducing external fuel is located at the center of the front side of the waste heat boiler 200. A set of waste heat pipes 210 for discharging the secondary combustion flue gas from rice husks and wood chips is located on the right side of the waste heat boiler 200. A set of heat exchange pipes for water exchange is located inside the waste heat boiler 200. A set of steam pipes is located at the upper end of the heat exchange pipes. The water inlet end of the heat exchange pipes is sealed to the external water source pipe. Several sets of heat exchange pipes are arranged side by side in the waste heat boiler 200. Several sets of heat exchange pipes converge and communicate with the steam pipe. The external hot water flows evenly through the heat exchange pipes and is used as an independent pipe inside the waste heat boiler 200 to exchange heat with the internal heat. The cooling water inside the heat exchange pipes is discharged from the steam pipe in the form of steam. At the same time, the unevaporated cooling water can be circulated a second time through the existing water circulation method outside the heat exchange pipes to achieve the purpose of circulating heat exchange.
[0031] On the right side of the waste heat pipe 210, there is a set of denitrification cylinder 220 for desulfurizing and denitrifying the flue gas. The denitrification cylinder 220 includes a cylinder body 22a, a multi-stage desulfurization filter 22b, a dry powder denitrification layer 22c, and an exhaust seat 22d. Inside the cylinder body 22a, there is a set of air guide chambers for desulfurizing and denitrifying the flue gas.
[0032] The upper end of the air guide chamber is equipped with several sets of multi-stage desulfurization filters 22b for desulfurizing flue gas. The multi-stage desulfurization filters 22b include polytetrafluoroethylene membrane filter paper, glass fiber, synthetic fiber and activated carbon layer. The multi-stage desulfurization filters 22b also include a support layer, which is made of metal mesh material. The lower end of the multi-stage desulfurization filters 22b is equipped with a dry powder denitrification layer 22c for denitrifying steam. The bottom of the air guide chamber is equipped with an exhaust seat 22d for introducing steam. At the same time, the upper end of its denitrification cylinder 220 is connected to the external SDS desulfurization system, SCR denitrification system and dust collector, and performs multiple denitrification and desulfurization processes on the flue gas.
[0033] In practical use, after the generated gas is sent into the waste heat boiler 200 by the gas booster fan 180, the flue gas enters the waste heat boiler 200 for secondary combustion. The secondary combustion injects supplementary oxygen into the high-temperature flue gas zone, allowing the combustible components that were not fully oxidized in the initial combustion stage (such as carbon monoxide, volatile organic compounds, and unburned carbon particles) to complete a chain oxidation reaction in a high-temperature environment. This process ensures that hydrocarbons are completely converted into carbon dioxide and water vapor by extending the residence time of combustible materials in the high-temperature zone, thereby significantly reducing the content of unburned substances in the flue gas. At the same time, the sensible heat released by the secondary combustion can be recovered in stages through radiant heat exchange surfaces or convective heat exchange surfaces, which improves the overall thermal efficiency of the system by 8%-12%. Some advanced systems integrate waste heat boilers to reduce the waste temperature of the flue gas from 900℃ to 200℃ in stages, achieving deep energy utilization.
[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, substitutions, or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A heating boiler system, comprising: The inner auger tube (100), gasifier (110), waste heat boiler (200), denitrification cylinder (220) and feed auger (230) are characterized in that: the inner auger tube (100) is provided with a set of feed augers (230) for introducing rice husks and wood chips into the inner auger tube (100); a set of gasifiers (110) for gasifying the feed augers (230) is provided on the right side of the feed augers (230); three sets of gasifiers (110) are arranged side by side; and an internal heating air pump (120) is provided on the right side of each set of gasifiers (110) for actively improving the gasification efficiency. The upper end of the three gasifiers (110) is provided with a gasification pipe (130) for transmitting the gas after the raw materials of rice husk and wood chip are gasified. The right side of the rear end of the gasification pipe (130) is provided with a connecting pipe (140) for introducing the gas into the waste heat boiler (200). The right side of the three gasifiers (110) is provided with a storage tank (150) for storing the biochar produced after the raw materials of rice husk and wood chip are burned.
2. A heating boiler system according to claim 1, characterized in that: A set of thermometers (160) is provided at the middle position of the front side of the storage tank (150). The connecting pipe (140) passes through the inside of the storage tank (150) and is sealed to the connecting conduit (170). The connecting conduit (170) and the connecting pipe (140) are integrally structured.
3. A heating boiler system according to claim 2, characterized in that: The connecting conduit (170) passes through the center of the sealing door (190), and a set of waste heat boilers (200) for secondary combustion of the flue gas from the burning of rice husks and wood chips is provided at the right end of the connecting conduit (170).
4. A heating boiler system according to claim 3, characterized in that: The waste heat boiler (200) is equipped with a set of gas booster fans (180) at the front and rear ends on the left side for accelerating the conduction of biomass flue gas inside the connecting duct (170). The pump ends of the two sets of gas booster fans (180) are connected to the inside of the connecting duct (170).
5. A heating boiler system according to claim 4, characterized in that: Both sets of gas booster fans (180) are fixed to the left side of the waste heat boiler (200) by bolts. A set of fuel pump pipes for introducing external fuel is provided at the center of the front side of the waste heat boiler (200). A set of waste heat pipes (210) for discharging the flue gas from the secondary combustion of rice husks and wood chips is provided on the right side of the waste heat boiler (200). A set of heat exchange pipes for water exchange is provided inside the waste heat boiler (200). A set of steam pipes is provided at the upper end of the heat exchange pipes.
6. A heating boiler system according to claim 5, characterized in that: The waste heat pipe (210) is provided with a set of denitrification cylinders (220) on the right side for desulfurizing and denitrifying the flue gas. The denitrification cylinder (220) includes a cylinder body (22a), a multi-stage desulfurization filter (22b), a dry powder denitrification layer (22c), and an exhaust seat (22d). The cylinder body (22a) is provided with a set of air guide chambers for desulfurizing and denitrifying the flue gas.
7. A heating boiler system according to claim 6, characterized in that: The upper end of the air guide chamber is provided with several sets of multi-stage desulfurization filters (22b) for desulfurizing flue gas. The multi-stage desulfurization filters (22b) include polytetrafluoroethylene membrane filter paper, glass fiber, synthetic fiber and activated carbon layer. The multi-stage desulfurization filters (22b) also include a support layer, which is made of metal mesh material. The lower end of the multi-stage desulfurization filters (22b) is provided with a dry powder denitrification layer (22c) for denitrifying steam. The bottom of the air guide chamber is provided with an exhaust seat (22d) for introducing steam.