Secondary solid-liquid separation and recovery device for biomass carbonization products

Abstract

The utility model relates to the technical field of biomass charcoal production, especially to secondary solid -liquid separation recovery unit of biomass carbonization product, including first sedimentation box and second sedimentation box, one side of first sedimentation box is equipped with the round opening for connecting carbonization converter, is equipped with the first baffle in first sedimentation box, and the upper end of first baffle is connected in the top of first sedimentation box, and the lower end of first baffle is equipped with the gap of accommodating flue gas between first sedimentation box bottom, and the upper portion of first sedimentation box is equipped with the smoke outlet, and the smoke outlet is located the X direction side of first baffle, and the round opening is located the side of first baffle away from X direction, etc.

Description

Technical Field

[0001] This utility model relates to the field of biochar production technology, and in particular to a two-stage solid-liquid separation and recovery device for biochar products. Background Technology

[0002] Biochar is a carbonaceous material produced by heating biomass (organic materials such as wood, crop straw, animal manure, nutshells, sawdust, etc.) to relatively low temperatures (usually between 300°C and 700°C) under anaerobic or oxygen-limited conditions. This process is called pyrolysis carbonization. In current technology, biomass raw materials are typically carbonized in a carbonization converter. The flue gas produced after carbonization needs to be treated before being emitted. Because biomass carbonization flue gas contains tar and carbon powder, existing flue gas treatment facilities are usually unable to fully separate and recover these tar and carbon powder. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a two-stage solid-liquid separation and recovery device for biomass carbonization products, which can fully separate and recover tar and carbon powder in biomass carbonization flue gas.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A two-stage solid-liquid separation and recovery device for biomass carbonization products includes a first settling tank and a second settling tank;

[0006] The first settling box has a circular opening on one side for connecting to the carbonization converter. The first settling box has a first baffle plate inside. The upper end of the first baffle plate is connected to the top of the first settling box. The lower end of the first baffle plate and the bottom of the first settling box have a gap to accommodate the passage of flue gas. The upper part of the first settling box has a flue gas outlet located on the X-direction side of the first baffle plate. The circular opening is located on the side of the first baffle plate away from the X-direction side.

[0007] The second settling box has a smoke inlet on the upper part of the X-direction side and a smoke exhaust outlet on the upper part of the opposite-X-direction side. The second settling box has a second baffle plate, a third baffle plate and a fourth baffle plate arranged sequentially along the opposite-X-direction. The upper ends of the second baffle plate and the fourth baffle plate are connected to the top of the second settling box. There is a gap between the upper end of the third baffle plate and the top of the second settling box. The lower part of the third baffle plate is pivotally connected to a movable plate. In the free state, the distance between the lower end of the movable plate and the bottom of the second settling box is 3-5cm.

[0008] The smoke inlet of the second settling box and the smoke outlet of the first settling box are connected by a smoke pipe;

[0009] The bottom of the first settling tank is provided with a first separation and recycling mechanism, and the bottom of the second settling tank is provided with a second separation and recycling mechanism. The second separation and recycling mechanism and the first separation and recycling mechanism are mirror images of each other.

[0010] The first separation and recovery mechanism includes:

[0011] The guide slope bottom surface is the lowest point in the X direction;

[0012] Heating mechanism for heating the inclined bottom surface of the flow guide;

[0013] An oil drain pipe is connected to the downstream end of the inclined bottom surface of the guide on the X-direction side of the first settling tank.

[0014] A pusher plate is movably disposed at the bottom of the first settling tank along the inclined direction of the guide inclined bottom surface, and is used to push the carbon powder deposited on the guide inclined bottom surface toward the end away from the X direction.

[0015] A movable cover plate is provided at the bottom of the first settling tank on the side opposite to the X direction, and a movable cover plate is provided at the discharge port.

[0016] A driving component is connected to the outside of the first settling tank and is used to drive the movable cover plate to move.

[0017] Furthermore, in the structure of the above-mentioned secondary solid-liquid separation and recovery device for biomass carbonization products, the heating mechanism is a heat-conducting chamber located at the lower part of the inclined bottom surface of the guide, and the heat-conducting chamber is filled with a heat-conducting medium.

[0018] Furthermore, in the structure of the above-mentioned secondary solid-liquid separation and recovery device for biomass carbonization products, the inclined bottom surface of the guide flow is an arc-shaped groove with high sides and low middle, and the bottom of the pusher plate is an arc matching the curvature of the inclined bottom surface of the guide flow.

[0019] Furthermore, in the structure of the above-mentioned secondary solid-liquid separation and recovery device for biomass carbonization products, the main slope of the inclined bottom surface of the guide is 5-10 degrees, the X-direction end of the inclined bottom surface of the guide is provided with an avoidance slope with a slope of 30-40 degrees, the oil discharge pipe is connected to the X-direction end of the avoidance slope, and when the pusher plate is located at the X-direction end of the first settling tank, the pusher plate is located above the oil discharge pipe.

[0020] Furthermore, in the structure of the above-mentioned secondary solid-liquid separation and recovery device for biomass carbonization products, the driving component is a cylinder, a hydraulic cylinder, or an electric cylinder.

[0021] Furthermore, in the structure of the above-mentioned secondary solid-liquid separation and recovery device for biomass carbonization products, a receiving cavity is provided at the lower part of the discharge port, and a valve plate is provided at the lower part of the receiving cavity.

[0022] Furthermore, in the structure of the above-mentioned secondary solid-liquid separation and recovery device for biomass carbonization products, the second settling tank is located above the first settling tank.

[0023] The beneficial effects of this utility model are as follows: by setting two settling boxes and corresponding baffle structures, the tar and carbon powder in the flowing flue gas are fully settled and recovered. By setting a first separation and recovery mechanism and a second separation and recovery mechanism with specific mechanisms, the tar and carbon powder are effectively separated and recycled separately. By setting two independent settling boxes, the overall length of the drive component can be reduced, making the movement control of the pusher plate more stable. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a two-stage solid-liquid separation and recovery device for biomass carbonization products according to a specific embodiment of the present invention.

[0025] Figure 2 for Figure 1 AA-direction cross-section diagram;

[0026] Label Explanation:

[0027] 1. First settling chamber; 11. Circular opening; 12. First baffle plate; 13. Smoke outlet; 14. First separation and recovery mechanism; 141. Guide inclined bottom surface; 1411. Main body; 1412. Avoidance inclined surface; 142. Oil drain pipe; 143. Pusher plate; 144. Movable cover plate; 145. Drive component; 146. Receiving cavity; 147. Valve plate; 148. Heating mechanism;

[0028] 2. Second settling chamber; 21. Smoke inlet; 22. Smoke outlet; 23. Second baffle plate; 24. Third baffle plate; 25. Fourth baffle plate; 26. Movable plate; 27. Second separation and recovery mechanism;

[0029] 3. Smoke pipe. Detailed Implementation

[0030] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0031] Please refer to Figure 1 as well as Figure 2 The specific embodiments of this utility model relate to a two-stage solid-liquid separation and recovery device for biomass carbonization products, including a first settling tank 1 and a second settling tank 2.

[0032] The first settling box 1 has a circular opening 11 on one side for connecting to the carbonization converter. The first settling box 1 has a first baffle plate 12 inside. The upper end of the first baffle plate 12 is connected to the top of the first settling box 1. The lower end of the first baffle plate 12 and the bottom of the first settling box 1 have a gap for accommodating flue gas. The upper part of the first settling box 1 has a flue gas outlet 13. The flue gas outlet 13 is located on the X-direction side of the first baffle plate 12. The circular opening 11 is located on the side of the first baffle plate 12 away from the X-direction.

[0033] The second settling box 2 has a smoke inlet 21 on the upper part of the X-direction side and a smoke outlet 22 on the upper part of the side away from the X-direction. The second settling box 2 has a second baffle 23, a third baffle 24 and a fourth baffle 25 arranged sequentially along the side away from the X-direction. The upper ends of the second baffle 23 and the fourth baffle 25 are connected to the top of the second settling box 2. There is a gap between the upper end of the third baffle 24 and the top of the second settling box 2. The lower part of the third baffle 24 is pivotally connected to a movable plate 26. In the free state, the distance between the lower end of the movable plate 26 and the bottom of the second settling box 2 is 3-5cm.

[0034] The smoke inlet 21 of the second settling box 2 and the smoke outlet 13 of the first settling box 1 are connected by a smoke pipe 3.

[0035] The bottom of the first settling tank 1 is provided with a first separation and recycling mechanism 14, and the bottom of the second settling tank 2 is provided with a second separation and recycling mechanism 27. The second separation and recycling mechanism 27 and the first separation and recycling mechanism 14 are mirror images of each other.

[0036] The first separation and recovery mechanism includes:

[0037] The guide slope bottom surface 141 is the lowest point at the X-axis end;

[0038] Heating mechanism 148 for heating the inclined bottom surface 141 of the flow guide;

[0039] Oil drain pipe 142 is connected to the downstream end of the inclined bottom surface 141 of the first settling tank 1X direction;

[0040] Pusher plate 143, which is movable along the inclined direction of the guide inclined bottom surface 141, is disposed at the bottom of the first settling box 1 and is used to push the carbon powder deposited on the guide inclined bottom surface 141 toward the end away from the X direction.

[0041] Movable cover plate 144; a discharge port is provided on the bottom side of the first settling box 1 away from the X direction, and a movable cover plate 144 is provided at the discharge port.

[0042] A driving component 145 is connected to the outside of the first settling tank and is used to drive the movable cover plate 144 to move.

[0043] In the above embodiments, the movable cover plate 144 can be any type of movable cover plate 144 controlled in the prior art, which can realize the opening and closing of the discharge port. For example, the rotating shaft is controlled by an external motor to rotate, thereby driving the movable cover plate to flip and realize the opening and closing of the discharge port.

[0044] In the above embodiments, the flue gas from the carbonization converter enters the first settling box 1 through the circular opening 11. A first baffle plate 12 is installed to increase the flow path of the flue gas within the first settling box 1. During the flow, tar and carbon powder in the flue gas settle to the lower inclined guide surface 141. The inclined guide surface 141 is heated by the heating mechanism 148, keeping the tar at a low viscosity. Under gravity, the tar spontaneously flows to the oil discharge pipe 142 for recovery, while the carbon powder remains on the inclined guide surface 141. The driving component 145 periodically controls the pushing... The carbon powder in the feed plate 143 is pushed to the high point of the inclined bottom surface 141 of the guide, and then the movable cover plate 144 is opened to discharge and recover the carbon powder. After the flue gas passes through the first stage of recovery, it reaches the second settling box 2 through the flue pipe 3. The flue gas is deflected in the second settling box 2 by the second baffle plate 23, the third baffle plate 24 and the fourth baffle plate 25, which increases the flow length and allows the tar and carbon powder in the flue gas to settle fully. The second separation and recovery mechanism 27 below works on the same principle as the first separation and recovery mechanism 14, and the tar and carbon powder are separated and recovered again.

[0045] In the above embodiments, by setting two settling boxes and corresponding baffle structures, the tar and carbon powder in the flowing flue gas are fully settled and recovered. By setting a first separation and recovery mechanism 14 and a second separation and recovery mechanism 27 with specific mechanisms, the tar and carbon powder are effectively separated and recycled separately. By setting two independent settling boxes, the overall length of the drive component 145 can be reduced, making the movement control of the pusher plate 143 more stable.

[0046] Preferably, the heating mechanism 148 is a heat-conducting chamber disposed at the lower part of the inclined bottom surface 141 of the flow guide, and the heat-conducting chamber is filled with a heat-conducting medium.

[0047] In the above embodiments, refer to Figure 1 The heat conduction chamber is connected to two connecting pipes on both sides, which can be connected to a heating water tank. A water pump is installed to circulate hot water between the heat conduction chamber and the heating water tank, keeping the water in the heat conduction chamber at a high temperature, generally 50-70℃. This prevents the tar on the inclined bottom surface 141 from cooling and causing an increase in viscosity, thus ensuring the fluidity of the tar.

[0048] Preferably, the inclined bottom surface 141 of the flow guide is an arc-shaped groove with high sides and low middle, and the bottom of the pusher plate 143 is an arc that matches the curvature of the inclined bottom surface 141 of the flow guide.

[0049] Preferably, the slope of the main body 1411 of the guide inclined bottom surface 141 is 5-10 degrees, and the X-direction end of the guide inclined bottom surface 141 is provided with a clearance slope 1412 with a slope of 30-40 degrees. The oil drain pipe 142 is connected to the X-direction end of the clearance slope 1412. When the pusher plate 143 is located at the X-direction end of the first settling box 1, the pusher plate 143 is located above the oil drain pipe 142.

[0050] In the above embodiments, by setting the avoidance slope 1412, when the pusher plate 143 is located at the X-direction end of the settling box, the pusher plate 143 is located above the oil discharge pipe 142 and will not block the discharge pipe opening, so that the tar can be discharged smoothly without pushing and collecting carbon powder.

[0051] Preferably, the driving component 145 is a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0052] In the above embodiments, the driving component 145 is a cylinder. The piston rod of the cylinder and the first settling box are slidably connected by a sealing ring to ensure sealing and prevent flue gas from flowing out from the gap between the piston rod of the cylinder and the first settling box during the material pushing process.

[0053] Preferably, the lower part of the discharge port is provided with a receiving cavity 146, and the lower part of the receiving cavity 146 is provided with a valve plate 147.

[0054] In the above embodiments, by providing a receiving cavity 146, the collected carbon powder can be temporarily stored inside the receiving cavity 146. During the flue gas circulation process, the lower valve plate 147 remains closed, ensuring that the interior is a sealed space to prevent flue gas from flowing out of the discharge port and affecting the surrounding environment. After the flue gas circulation ends, the valve plate 147 is opened once to allow the carbon powder in the receiving cavity 146 to fall and be collected. The valve plate 147 can be any form of valve plate 147 in the prior art, such as a butterfly valve. The rotating shaft of the butterfly valve is driven to rotate by an external motor, thereby realizing the flipping of the valve plate 147.

[0055] Preferably, the second settling box 2 is located above the first settling box 1, so that the main body 1411 of the flue pipe 3 is in a vertical state, avoiding the problem of carbon powder and tar in the flue gas depositing in the flue pipe 3 and causing blockage.

[0056] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A two-stage solid-liquid separation and recovery device for biomass carbonization products, characterized in that, Includes a first settling box and a second settling box; The first settling box has a circular opening on one side for connecting to the carbonization converter. The first settling box has a first baffle plate inside. The upper end of the first baffle plate is connected to the top of the first settling box. The lower end of the first baffle plate and the bottom of the first settling box have a gap to accommodate the passage of flue gas. The upper part of the first settling box has a flue gas outlet located on the X-direction side of the first baffle plate. The circular opening is located on the side of the first baffle plate away from the X-direction side. The second settling box has a smoke inlet on the upper part of the X-direction side and a smoke exhaust outlet on the upper part of the side away from the X-direction. The second settling box has a second baffle, a third baffle, and a fourth baffle in sequence along the direction away from the X-direction. The upper ends of the second baffle and the fourth baffle are connected to the top of the second settling box. There is a gap between the upper end of the third baffle and the top of the second settling box. The lower part of the third baffle is pivotally connected to a movable plate. In the free state, the distance between the lower end of the movable plate and the bottom of the second settling box is 3-5cm. The smoke inlet of the second settling box and the smoke outlet of the first settling box are connected by a smoke pipe; The bottom of the first settling tank is provided with a first separation and recycling mechanism, and the bottom of the second settling tank is provided with a second separation and recycling mechanism. The second separation and recycling mechanism and the first separation and recycling mechanism are mirror images of each other. The first separation and recovery mechanism includes: The guide slope bottom surface is the lowest point in the X direction; Heating mechanism for heating the inclined bottom surface of the flow guide; An oil drain pipe is connected to the downstream end of the inclined bottom surface of the guide on the X-direction side of the first settling tank. A pusher plate is movably disposed at the bottom of the first settling tank along the inclined direction of the guide inclined bottom surface, and is used to push the carbon powder deposited on the guide inclined bottom surface toward the end away from the X direction. A movable cover plate is provided at the bottom of the first settling tank on the side opposite to the X direction, and a movable cover plate is provided at the discharge port. A driving component is connected to the outside of the first settling tank and is used to drive the movable cover plate to move.

2. The secondary solid-liquid separation and recovery device for biomass carbonization products according to claim 1, characterized in that, The heating mechanism is a heat-conducting chamber located at the bottom of the inclined guide surface, and the heat-conducting chamber is filled with a heat-conducting medium.

3. The secondary solid-liquid separation and recovery device for biomass carbonization products according to claim 1, characterized in that, The inclined bottom surface of the flow guide is an arc-shaped groove with high sides and low middle, and the bottom of the pusher plate is an arc that matches the curvature of the inclined bottom surface of the flow guide.

4. The secondary solid-liquid separation and recovery device for biomass carbonization products according to claim 1, characterized in that, The main body of the inclined bottom surface of the guide has an inclination of 5-10 degrees. The X-direction end of the inclined bottom surface of the guide is provided with a clearance slope with an inclination of 30-40 degrees. The oil drain pipe is connected to the X-direction end of the clearance slope. When the pusher plate is located at the X-direction end of the first settling box, the pusher plate is located above the oil drain pipe.

5. The secondary solid-liquid separation and recovery device for biomass carbonization products according to claim 1, characterized in that, The driving component is a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

6. The secondary solid-liquid separation and recovery device for biomass carbonization products according to claim 1, characterized in that, The lower part of the discharge port is provided with a receiving cavity, and the lower part of the receiving cavity is provided with a valve plate.

7. The secondary solid-liquid separation and recovery device for biomass carbonization products according to claim 1, characterized in that, The second settling box is located above the first settling box.

Images