A new type of high-efficiency carbonization machine for producing carbon by biomass fuel mechanism

Abstract

The utility model relates to nonmetal element compound technical field, and disclose a kind of novel biomass fuel mechanism carbon production with high -efficient carbonization machine, including, a kind of novel biomass fuel mechanism carbon production with high -efficient carbonization machine, including kiln body, heating device and cooling device, further including combustible gas recovery purification and circulation heating system: it includes combustible gas cooling collection device, combustible gas fan and combustion chamber sequentially connected by pipeline, it includes flue gas purification device, main induced draft fan and discharge chimney sequentially connected by pipeline.The utility model adopts closed anaerobic dry distillation pyrolysis process, combined with the high-temperature carbonization of ≥850 DEG C, the produced mechanism carbon is extremely high in carbon content, extremely low in volatile matter and ash content, and the product has the characteristics of hard texture, smokeless and odorless combustion, stable and long-lasting firepower, high calorific value, etc. It belongs to high-end carbon products, which greatly improves the product added value and market competitiveness.

Description

Technical Field

[0001] This utility model relates to the field of non-metallic elements and their compounds, specifically a new type of high-efficiency charcoal making machine for biomass fuel charcoal production. Background Technology

[0002] Biomass briquette carbonization is a process in which biomass resources such as agricultural waste and forestry residues are first mechanically processed into a specific shape and then transformed into biochar (a carbon-rich solid) through thermochemical conversion. This is not only a way of resource utilization, but also has positive significance for the environment.

[0003] Currently, most domestic charcoal-making enterprises use traditional earthen kilns and hanging kilns for carbonization. These types of carbonization kilns have poor environmental conditions, high labor intensity, intermittent operation, low energy utilization, and fail to meet environmental protection standards and have low output. Utility Model Content

[0004] The purpose of this utility model is to provide a new type of high-efficiency charcoal making machine for biomass fuel charcoal production, which solves the problems of most domestic charcoal making enterprises currently using traditional earthen kilns and hanging kilns for carbonization. These types of carbonization kilns have poor environment, high labor intensity, intermittent operation, low energy utilization, failure to meet environmental protection standards, and low output.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a novel high-efficiency charcoal making machine for biomass fuel charcoal production, including a kiln body, a heating device, and a cooling device, and also includes a combustible gas recovery, purification, and circulating heating system: it includes a combustible gas cooling and collection device, a combustible gas fan, and a combustion chamber connected in sequence by pipelines. The inlet of the combustible gas cooling and collection device is connected to the dry distillation and pyrolysis section of the kiln body, and the flue gas outlet of the combustion chamber is connected to a radiant heating tube, which serves as the heating device. The radiant heating tube is arranged in the dry distillation and pyrolysis section and the high-temperature carbonization section of the kiln body.

[0007] Sealed feeding and waste heat utilization unit: It includes a preheating and drying device installed at the feeding end of the kiln body, a hydraulic gate driven by a hydraulic station, and a material frame located at the hydraulic gate. The preheating and drying device is provided with a waste heat inlet connected to the kiln body exhaust pipe.

[0008] Integrated cooling and heat recovery unit: It includes a cooling and temperature reduction unit as the cooling device, a cooling device installed in the unit, a cooling circulation fan, and a water-cooled circuit connected to a cooling water tank and a cooling water pump;

[0009] Flue gas purification and emission unit: It includes a flue gas purification device, a main induced draft fan and an emission chimney connected in sequence through pipes.

[0010] Furthermore, the combustion chamber is also connected to an auxiliary fuel supply device.

[0011] Furthermore, the integrated cooling and heat recovery unit also includes an air cooler, the air inlet of which is connected to the exhaust pipe of the cooling unit, and its air outlet is connected to the combustion air inlet of the combustion chamber.

[0012] Furthermore, the combustible gas cooling and collection device is a gas-liquid separation device that includes a multi-stage condenser.

[0013] Furthermore, the kiln body is an integrated tunnel structure, which includes, in sequence along the material travel direction, the preheating and drying device, the dry distillation and pyrolysis unit, the high-temperature carbonization unit, and the cooling and temperature reduction unit.

[0014] Furthermore, the radiant heating tubes in the dry distillation pyrolysis unit and the high-temperature carbonization unit have flue gas flow directions opposite to the material movement direction inside the kiln.

[0015] This utility model has the following beneficial effects:

[0016] (1) This utility model adopts a closed oxygen-free dry distillation pyrolysis process, combined with high-temperature carbonization at ≥850℃. The produced machine-made charcoal has extremely high carbon content, extremely low volatile matter and ash content. The product has the characteristics of hard texture, smokeless and odorless combustion, stable and long-lasting firepower, and high calorific value. It belongs to high-end charcoal products, which greatly enhances the added value of the product and market competitiveness.

[0017] (2) This utility model realizes continuous and automated production. The material moves in the tunnel kiln to complete the entire process, replacing the cumbersome intermittent operations of traditional kiln loading, sealing, extinguishing and unloading. The charcoal production cycle is shortened to 2-3 days, which is only one-fifth of that of traditional earthen kilns. The annual output of a single production line can reach 3,500 tons, and the production efficiency is improved by orders of magnitude.

[0018] (3) The heat source of this utility model system mainly relies on self-produced combustible gas, and the energy is self-sufficient. It requires no or only a small amount of auxiliary fuel. Through multiple cascade heat recovery technologies such as countercurrent radiation heating, flue gas waste heat preheating raw materials, and recovering the heat energy of the cooling section for combustion air, the heat energy is maximized for internal circulation. The above design greatly reduces the overall energy consumption and the operating economy is significantly better than that of traditional processes.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of part of the structure of this utility model;

[0023] Figure 3 This utility model Figure 1 Enlarged schematic diagram of structure A in the image;

[0024] Figure 4 This utility model Figure 1 Enlarged schematic diagram of structure B in the diagram;

[0025] The attached diagram lists the components represented by each number as follows:

[0026] In the diagram: 1. Material frame; 2. Hydraulic gate; 3. Combustible gas cooling and collection device; 4. Auxiliary fuel; 5. Combustible gas blower; 6. Combustion chamber; 7. Preheating and drying device; 8. Hydraulic station; 9. Flue gas purification device; 10. Main induced draft fan; 11. Exhaust chimney; 12. Dry distillation and pyrolysis unit; 13. High-temperature carbonization unit; 14. Cooling device; 15. Cooling circulating fan; 16. Cooling and temperature reduction unit; 17. Cooling water pump; 18. Cooling water tank; 19. Air cooler. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0028] Please see Figures 1-4 As shown, this utility model is a new type of high-efficiency charcoal making machine for biomass fuel charcoal production, including a kiln body, a heating device and a cooling device, and also includes a combustible gas recovery, purification and circulation heating system: it includes a combustible gas cooling and collection device 3, a combustible gas fan 5 and a combustion chamber 6 connected in sequence by pipelines. The inlet of the combustible gas cooling and collection device 3 is connected to the dry distillation pyrolysis section of the kiln body, and the flue gas outlet of the combustion chamber 6 is connected to a radiant heating pipe, which is a heating device. The radiant heating pipe is arranged in the dry distillation pyrolysis section and the high-temperature carbonization section of the kiln body.

[0029] Sealed feeding and waste heat utilization unit: It includes a preheating and drying device 7 installed at the feeding end of the kiln body, a hydraulic gate 2 driven by a hydraulic station 8, and a material frame 1 located at the hydraulic gate 2. The preheating and drying device 7 is provided with a waste heat inlet connected to the kiln body exhaust pipe.

[0030] Integrated cooling and heat recovery unit: It includes a cooling and cooling unit 16 as a cooling device, a cooling device 14 installed in the unit, a cooling circulating fan 15, and a water-cooled circuit connected to a cooling water tank 18 and a cooling water pump 17.

[0031] Flue gas purification and emission unit: It includes a flue gas purification device 9, a main induced draft fan 10 and an emission chimney 11 connected in sequence by pipes.

[0032] Combustion chamber 6 is also connected to an auxiliary fuel supply device 4.

[0033] The integrated cooling and heat recovery unit also includes an air cooler 19, whose air inlet is connected to the exhaust pipe of the cooling unit 16, and whose air outlet is connected to the combustion air inlet of the combustion chamber 6.

[0034] The combustible gas cooling and collection device 3 is a gas-liquid separation device that includes a multi-stage condenser.

[0035] The kiln body is an integrated tunnel structure, which includes a preheating and drying device 7, a dry distillation and pyrolysis unit 12, a high-temperature carbonization unit 13 and a cooling and temperature reduction unit 16 in sequence along the material travel direction.

[0036] The radiant heating tubes in the dry distillation pyrolysis unit 12 and the high-temperature carbonization unit 13 have flue gas flow directions opposite to the material movement direction inside the kiln.

[0037] Working principle: Biomass raw materials are fed into the integrated tunnel kiln through a hydraulic gate 2 in a feed frame 1. The kiln body is sequentially configured with a preheating and drying section 7, a dry distillation and pyrolysis section 12, a high-temperature carbonization section 13, and a cooling section 16 along the material's direction of travel. The raw materials move slowly within the kiln, undergoing preheating and dehydration, dry distillation and pyrolysis for volatile matter release, and high-temperature carbonization (≥850℃) in a completely air-isolated, slightly negative pressure environment, ultimately forming high-quality machine-made charcoal. The combustible gas produced in the dry distillation and pyrolysis section is extracted and cooled. The collecting device 3 separates wood vinegar and tar to obtain high-calorific-value purified gas. The purified gas is transported to the combustion chamber 6 by the combustible gas fan 5 for combustion, generating high-temperature flue gas. This high-temperature flue gas enters the radiant heating tubes arranged in the dry distillation and carbonization sections, indirectly heating the material through thermal radiation. The flue gas flow direction in the radiant tubes is opposite to the material movement direction in the kiln, forming efficient countercurrent heat exchange, enabling the step utilization of heat energy and precisely matching the temperature requirements of each process section. By adjusting the combustion and flue gas system, the temperature of the radiant tubes can be precisely controlled, achieving programmed control of the "time-temperature" curve of the entire carbonization process. The medium- and low-temperature flue gas discharged from the tunnel kiln is introduced into the preheating and drying device 7, where the refrigerated briquette rods that have just entered the kiln are pre-dried through convective heat exchange, making full use of residual heat. The high-temperature charcoal, which has completed carbonization and is about 850°C, enters the cooling and cooling unit 16. It is first indirectly cooled by the cooling device 14 and water cooling circuits 17 and 18. In the subsequent stage, it is directly cooled by the cold air introduced by the cooling circulation fan 15. The heated hot air is then cooled by the air cooler 19. After heating, the gas is converted into high-temperature combustion air and sent into the combustion chamber 6, which significantly saves the main fuel consumption. The heat energy of the entire system mainly comes from the self-produced combustible gas. Through the above multiple recovery, a closed loop of heat energy can be achieved, and about 15% of the gas is surplus, which can be used to generate steam and other heat for external use. The final flue gas after combustion is desulfurized and dusted by the flue gas purification device 9, and then discharged through the exhaust chimney 11 by the main induced draft fan 10 to meet the emission standards. The entire system operates under a fully enclosed micro-negative pressure to ensure that there is no leakage of flue gas or dust during the production process.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel high-efficiency charcoal making machine for biomass fuel charcoal production, comprising a kiln body, a heating device, and a cooling device, characterized in that: It also includes a combustible gas recovery, purification and circulation heating system: it includes a combustible gas cooling and collection device (3), a combustible gas fan (5) and a combustion chamber (6) connected in sequence by pipes. The inlet of the combustible gas cooling and collection device (3) is connected to the dry distillation and pyrolysis section of the kiln body, and the flue gas outlet of the combustion chamber (6) is connected to the radiant heating tube, which is the heating device. The radiant heating tube is arranged in the dry distillation and pyrolysis section and the high-temperature carbonization section of the kiln body. Sealed feeding and waste heat utilization unit: It includes a preheating and drying device (7) installed at the feeding end of the kiln body, a hydraulic gate (2) driven by a hydraulic station (8), and a material frame (1) located at the hydraulic gate (2). The preheating and drying device (7) is provided with a waste heat inlet connected to the kiln body exhaust pipe. Integrated cooling and heat recovery unit: It includes a cooling and cooling unit (16) as the cooling device, a cooling device (14) installed in the unit, a cooling circulation fan (15), and a water-cooled circuit connected to a cooling water tank (18) and a cooling water pump (17); Flue gas purification and emission unit: It includes a flue gas purification device (9), a main induced draft fan (10) and an emission chimney (11) connected in sequence by pipes.

2. The high-efficiency charcoal making machine for biomass fuel charcoal production according to claim 1, characterized in that: The combustion chamber (6) is also connected to an auxiliary fuel (4) supply device.

3. The high-efficiency charcoal making machine for biomass fuel charcoal production according to claim 1, characterized in that: The integrated cooling and heat recovery unit also includes an air cooler (19), the air inlet of which is connected to the exhaust pipe of the cooling and cooling unit (16), and its air outlet is connected to the combustion air inlet of the combustion chamber (6).

4. The high-efficiency charcoal making machine for biomass fuel charcoal production according to claim 1, characterized in that: The combustible gas cooling and collection device (3) is a gas-liquid separation device that includes a multi-stage condenser.

5. The high-efficiency charcoal making machine for biomass fuel charcoal production according to claim 1, characterized in that: The kiln body is an integrated tunnel structure, which includes, in sequence along the material travel direction, the preheating and drying device (7), the dry distillation and pyrolysis unit (12), the high-temperature carbonization unit (13), and the cooling and temperature reduction unit (16).

6. The high-efficiency charcoal making machine for biomass fuel charcoal production according to claim 5, characterized in that: The radiant heating tubes in the dry distillation pyrolysis unit (12) and the high-temperature carbonization unit (13) have flue gas flow directions that are opposite to the movement direction of the material inside the kiln.

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