High-temperature and high-pressure carbonization device

Abstract

The utility model provides a high-temperature and high-pressure carbonization device, which relates to the technical field of biochar preparation, and comprises a high-pressure reaction kettle body, a stirring assembly, a mounting rack, a weighing device, a mixing barrel, a biomass conveying assembly, a basic nutrient substance conveying assembly, a booster pump, a material injection pipe and a medium and trace nutrient substance quantitative adding assembly, according to the device, basic nutrient substances and biomass can be efficiently mixed before biochar is prepared through high-pressure hydrothermal carbonization, then the basic nutrient substances and the biomass are uniformly mixed so as to improve the nutrient content in the follow-up biochar, and meanwhile, part of medium and trace nutrient substances which mutually react with the basic nutrient substances are added in a lagging manner; therefore, the medium and trace nutrient substances cannot react in advance to lose efficacy, and the prepared biochar can be directly used as a slow release fertilizer to carry out agricultural activities such as soil improvement and the like.

Description

Technical Field

[0001] This utility model relates to the field of biochar preparation technology, and more specifically, to a high-temperature and high-pressure carbonization device. Background Technology

[0002] Biochar is a carbon-rich solid material produced by the high-temperature pyrolysis (200-700℃) of biomass (such as straw, sawdust, and manure) in an oxygen-deficient / limited environment.

[0003] Traditional biochar preparation processes often involve direct heat contact with a high-pressure reactor followed by hydrothermal carbonization. However, this results in low nutrient content in the biochar, making it unsuitable for direct agricultural use after preparation, and consequently, its soil improvement effect is generally poor.

[0004] Announcement No. CN111057600B proposes an integrated hydrothermal carbonization process device. This device improves the porosity of biochar through microbial inoculation and fermentation, but it cannot improve the nutrient content of biochar, thus failing to effectively improve the soil. Utility Model Content

[0005] The purpose of this invention is to solve the problems mentioned in the background art and to propose a high-temperature and high-pressure carbonization device.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A high-temperature, high-pressure carbonization device includes a high-pressure reactor body and a stirring assembly, as well as a mounting frame, weighing equipment, a mixing cylinder, a biomass conveying assembly, a basic nutrient conveying assembly, a booster pump, a feeding pipe, and a micronutrient quantitative addition assembly.

[0008] The weighing equipment, booster pump, and injection pipe are all fixed on the mounting frame;

[0009] The mixing drum is fixed to the weighing equipment, and a stirring component is installed inside the mixing drum;

[0010] The biomass conveying assembly and the basic nutrient conveying assembly are respectively connected to the inside of the mixing drum and electrically connected to the weighing equipment;

[0011] One end of the booster pump is connected to the discharge port of the mixing cylinder, and a valve is installed on the discharge port of the mixing cylinder.

[0012] One end of the injection pipe is connected to the booster pump, and the other end of the injection pipe is connected to the feed inlet of the high-pressure reactor body;

[0013] The micronutrient quantitative addition component is connected to the injection pipe to delay the addition of micronutrients and avoid premature addition that could lead to reaction failure.

[0014] Furthermore, the biomass conveying assembly includes a first feed hopper and a pneumatic conveying device. The first feed hopper is fixed at the top of the mixing drum and connected to the inside of the mixing drum. The discharge pipe of the pneumatic conveying device is fitted above the first feed hopper.

[0015] The above solution uses a biomass conveying component to automatically add crushed biomass into the mixing drum.

[0016] Furthermore, the basic nutrient delivery assembly includes a second feed hopper, a suction pump, and a basic nutrient tank. The second feed hopper is fixed at the top of the mixing cylinder and connected to the inside of the mixing cylinder. The output pipeline of the suction pump is connected above the second feed hopper, and the input pipeline of the suction pump is connected to the basic nutrient tank.

[0017] The above solution uses a basic nutrient delivery component to automatically add pre-mixed basic nutrient solution into the mixing drum.

[0018] Furthermore, the micronutrient quantitative addition component includes a branch pipe, a solenoid valve, a metering and pressurizing component, and a micronutrient tank. The injection pipe is connected to an inclined branch pipe, and a solenoid valve is installed on the branch pipe. The end of the branch pipe away from the injection pipe is connected to the metering and pressurizing component fixed on the mounting frame. The metering and pressurizing component is connected to the micronutrient tank.

[0019] The above scheme allows for the delayed addition of some micronutrients that react with basic nutrients, thereby ensuring that micronutrients do not react and become ineffective prematurely.

[0020] Furthermore, the first and second feed hoppers are respectively fixed with sealing plates of appropriate size, the discharge pipe of the pneumatic conveying equipment is connected to one sealing plate, and the output pipe of the suction pump is connected to another sealing plate.

[0021] The above solution can prevent dust spillage and liquid splashing during the addition of biomass and basic nutrients by using a sealing plate.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] Compared to existing technologies, this device can achieve efficient mixing of basic nutrients and biomass before high-pressure hydrothermal carbonization to prepare biochar, thereby ensuring uniform mixing and increasing the nutrient content in the subsequent biochar. At the same time, some micronutrients that react with the basic nutrients are added in a delayed manner, thus ensuring that the micronutrients do not react and become ineffective prematurely. After the biochar is prepared, it can be directly used as a slow-release fertilizer for agricultural activities such as soil improvement. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the sealing plate installation;

[0026] Figure label:

[0027] 1. High-pressure reactor body; 2. Weighing equipment; 3. Mixing cylinder; 4. First feed hopper; 5. Pneumatic conveying equipment; 6. Second feed hopper; 7. Suction pump; 8. Booster pump; 9. Injection pipe; 10. Branch pipe; 11. Solenoid valve; 12. Metering and pressurizing assembly; 13. Sealing plate. Detailed Implementation

[0028] 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 a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0029] like Figure 1 As shown, a high-temperature and high-pressure carbonization device includes a high-pressure reactor body 1, a stirring assembly (not shown in the figure), a mounting frame (not shown in the figure), a weighing device 2, a mixing cylinder 3, a biomass conveying assembly, a basic nutrient conveying assembly, a booster pump 8, a feeding pipe 9, and a micronutrient quantitative addition assembly.

[0030] The weighing equipment 2, the booster pump 8, and the injection pipe 9 are all fixed on the mounting frame;

[0031] The mixing drum 3 is fixed on the weighing device 2, and a stirring assembly is installed inside the mixing drum 3;

[0032] The biomass conveying assembly and the basic nutrient conveying assembly are respectively connected to the inside of the mixing cylinder 3 and electrically connected to the weighing device 2;

[0033] One end of the booster pump 8 is connected to the discharge port of the mixing cylinder 3, and a valve is installed on the discharge port of the mixing cylinder 3.

[0034] One end of the injection pipe 9 is connected to the booster pump 8, and the other end of the injection pipe 9 is connected to the feed inlet of the high-pressure reactor body 1;

[0035] The micronutrient quantitative addition component is connected to the injection pipe 9 to delay the addition of micronutrients and avoid premature addition that could lead to reaction failure.

[0036] Further refinements of the embodiments of this utility model, such as... Figure 1As shown, the biomass conveying assembly includes a first feed hopper 4 and a pneumatic conveying device 5. The first feed hopper 4 is fixed on the top of the mixing cylinder 3 and connected to the inside of the mixing cylinder 3. The discharge pipe of the pneumatic conveying device 5 is fitted above the first feed hopper 4.

[0037] Further refinements of the embodiments of this utility model, such as... Figure 1 As shown, the basic nutrient delivery assembly includes a second feed hopper 6, a suction pump 7, and a basic nutrient tank. The second feed hopper 6 is fixed to the top of the mixing cylinder 3 and is connected to the inside of the mixing cylinder 3. The output pipe of the suction pump 7 is connected above the second feed hopper 6, and the input pipe of the suction pump 7 is connected to the basic nutrient tank (the basic nutrient tank is not shown in the figure).

[0038] Further optimization of the above scheme, such as Figure 2 As shown, the first feed hopper 4 and the second feed hopper 6 are respectively equipped with independently controlled solid shut-off valves and liquid shut-off valves, which are not labeled in the figure.

[0039] Further refinements of the embodiments of this utility model, such as... Figure 1 As shown, the micronutrient quantitative addition component includes a branch pipe 10, a solenoid valve 11, a metering and pressurizing component 12, and a micronutrient tank (not shown in the figure). The injection pipe 9 is connected to the inclined branch pipe 10, and the branch pipe 10 is equipped with a solenoid valve 11. The end of the branch pipe 10 away from the injection pipe 9 is connected to the metering and pressurizing component 12 fixed on the mounting frame. The metering and pressurizing component 12 is connected to the micronutrient tank (the metering and pressurizing component 12 consists of a metering pump and an auxiliary pressurizing pump).

[0040] In a further optimization of the above embodiment, the first feed hopper 4 and the second feed hopper 6 are respectively fixed with sealing plates 13 of suitable size, the discharge pipe of the pneumatic conveying device 5 is connected to one sealing plate 13, and the output pipe of the suction pump 7 is connected to another sealing plate 13.

[0041] It should be noted that the high-pressure reactor body 1, weighing device 2, pneumatic conveying device 5, suction pump 7, booster pump 8, solenoid valve 11, metering pump, and auxiliary booster pump are all electrically connected to the controller, which is shown in the figure without a number.

[0042] The working process of this utility model is as follows:

[0043] First, the crushed biomass is conveyed through the pneumatic conveying device 5 and injected into the mixing drum 3. The weighing value of the weighing device 2 is set to 0 in advance. When the amount of biomass added is about to reach the preset weighing value, the weighing device 2 sends a feedback signal to the controller, and the controller then controls the pneumatic conveying device 5 to stop working.

[0044] The controller then controls the suction pump 7 to work, which allows the nutrients (including nitrogen, phosphorus, potassium, etc.) that have been pre-mixed with water to be introduced into the mixing drum 3. When the total weight in the mixing drum 3 is about to reach the pre-set weight value, the weighing device 2 sends a signal back to the controller, which then controls the suction pump 7 to stop. At this point, the accurate ratio of biomass and nutrients can be achieved (by adding the sealing plate 13, the phenomenon of dust overflow and liquid splashing during the addition of biomass and nutrients can be avoided). Then, the stirring component is started to make the two evenly mixed and form a slurry.

[0045] After mixing, the booster pump 8 is controlled by the controller and the valve is opened to transfer the slurry material in the mixing cylinder 3 to the high-pressure reactor body 1 for the preparation of biochar.

[0046] In the later stage of the reaction, the solenoid valve 11 is opened by the controller, and the booster pump 8 is in a stopped state. Then, the metering booster component 12 is used to pressurize and inject a fixed volume of micronutrients (including iron, manganese, zinc and other micronutrients) into the high-pressure reactor body 1. This avoids the micronutrients from reacting with the previously added basic nutrients and becoming ineffective. The nutrient content of the biochar prepared is significantly improved, resulting in good soil improvement effect. It can be directly used for agricultural purposes. It should be noted that whether the mixed slurry is introduced into the high-pressure reactor body 1 or the micronutrients are introduced into the high-pressure reactor body 1, the pressure of the booster pump 8 and the metering booster component 12 must be greater than the internal pressure of the high-pressure reactor body 1. An auxiliary booster pump is configured on the basis of the metering pump to increase the injection pressure on the basis of quantitative addition of micronutrients.

[0047] Compared to existing technologies, this device can achieve efficient mixing of basic nutrients and biomass before high-pressure hydrothermal carbonization to prepare biochar, thereby ensuring uniform mixing and increasing the nutrient content in the subsequent biochar. At the same time, some micronutrients that react with the basic nutrients are added in a delayed manner, thus ensuring that the micronutrients do not react and become ineffective prematurely. After the biochar is prepared, it can be directly used as a slow-release fertilizer for agricultural activities such as soil improvement.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-temperature and high-pressure carbonization device, comprising a high-pressure reactor body (1) and a stirring assembly, characterized in that, It also includes a mounting frame, weighing equipment (2), mixing drum (3), biomass conveying components, basic nutrient conveying components, booster pump (8), injection pipe (9), and micronutrient quantitative addition components. The weighing equipment (2), the booster pump (8), and the injection pipe (9) are all fixed on the mounting frame; The mixing drum (3) is fixed on the weighing device (2), and a stirring assembly is provided inside the mixing drum (3); The biomass conveying assembly and the basic nutrient conveying assembly are respectively connected to the inside of the mixing drum (3) and electrically connected to the weighing equipment (2); One end of the booster pump (8) is connected to the outlet of the mixing cylinder (3), and a valve is installed on the outlet of the mixing cylinder (3); One end of the injection pipe (9) is connected to the booster pump (8), and the other end of the injection pipe (9) is connected to the feed inlet of the high-pressure reactor body (1); The micronutrient quantitative addition component is connected to the injection pipe (9) to delay the addition of micronutrients and avoid premature addition that could cause the reaction to fail.

2. The high-temperature and high-pressure carbonization device according to claim 1, characterized in that, The biomass conveying assembly includes a first feed hopper (4) and a pneumatic conveying device (5). The first feed hopper (4) is fixed on the top of the mixing cylinder (3) and connected to the inside of the mixing cylinder (3). The discharge pipe of the pneumatic conveying device (5) is fitted above the first feed hopper (4).

3. The high-temperature and high-pressure carbonization device according to claim 2, characterized in that, The basic nutrient delivery assembly includes a second feed hopper (6), a suction pump (7), and a basic nutrient tank. The second feed hopper (6) is fixed on the top of the mixing cylinder (3) and connected to the inside of the mixing cylinder (3). The output pipeline of the suction pump (7) is connected above the second feed hopper (6), and the input pipeline of the suction pump (7) is connected to the basic nutrient tank.

4. The high-temperature and high-pressure carbonization device according to claim 1, characterized in that, The micronutrient quantitative addition component includes a branch pipe (10), a solenoid valve (11), a metering and pressurizing component (12), and a micronutrient tank. The injection pipe (9) is connected to the inclined branch pipe (10), and the branch pipe (10) is equipped with a solenoid valve (11). The end of the branch pipe (10) away from the injection pipe (9) is connected to the metering and pressurizing component (12) fixed on the mounting frame. The metering and pressurizing component (12) is connected to the micronutrient tank.

5. The high-temperature and high-pressure carbonization device according to claim 3, characterized in that, The first feed hopper (4) and the second feed hopper (6) are respectively fixed with sealing plates (13) of the same size. The discharge pipe of the pneumatic conveying device (5) is connected to one sealing plate (13), and the output pipe of the suction pump (7) is connected to another sealing plate (13).

Images