Device for preventing blockage of biomass dry distillation pipeline

Abstract

The utility model discloses a device for preventing a biomass dry distillation pipeline from being blocked, which comprises a separating tower and a spraying tank, three layers of spraying components are arranged at the upper part of an inner cavity of the separating tower, and the spraying components are connected with the bottom of an inner cavity of the spraying tank through a pipeline; the bottom of the inner cavity of the separation tower is connected with the wood tar storage tank through a pipeline; one side of the bottom side of the inner cavity of the separation tower is connected with the top of the inner cavity of the spraying tank through a communicating pipe; a gas phase outlet in the top of the inner cavity of the separation tower is communicated with the bottom end of a condensation straight pipe through a pipeline, and the condensation straight pipe is fixedly connected to the top of the inner cavity of the spraying tank in the vertical direction; a spiral heat exchange pipe is wound on the outer portion of a main body of the condensation straight pipe, and a spiral clamping cavity is formed between the spiral heat exchange pipe and the outer wall of the condensation straight pipe. According to the device, mixed gas can be effectively cooled through three-layer spraying washing, wood tar precipitation and wood vinegar collection are accelerated, the production efficiency can be improved, pipeline blockage is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to a device for preventing a biomass dry distillation pipeline from being blocked, and belongs to the technical field of biomass dry distillation. Background Art

[0002] Biomass distillation refers to the process of pyrolyzing biomass into combustible gas, solid charcoal and liquid bio-oil under air-tight conditions.

[0003] When the biomass temperature is raised to 200°C, the gaseous products separated out by biomass decomposition contain a large amount of organic matter, including organic acids, phenols, alcohols and ketones, which are usually called wood vinegar when dissolved in water. In addition, the gaseous products also contain some large molecular tars, which can precipitate and adsorb some solid particles after cooling. If they are not separated, they will cause pipeline blockage during transportation. However, the separation devices in the prior art generally have the problem of slow and incomplete separation speed.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] In view of the deficiencies in the background technology, the utility model provides a device for preventing the blockage of biomass dry distillation pipelines, which can effectively cool down the mixed gas through three-layer spray washing, accelerate the precipitation of wood tar and the collection of wood vinegar, improve production efficiency, reduce pipeline blockage, and reduce production costs.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A device for preventing biomass dry distillation pipeline from being blocked comprises a separation tower and a spray tank, wherein a three-layer spray assembly is installed on the upper part of the inner cavity of the separation tower, and the spray assembly is connected to the bottom of the inner cavity of the spray tank through a pipeline;

[0008] The bottom of the inner cavity of the separation tower is connected to the wood tar storage tank through a pipeline, and one side of the bottom of the inner cavity of the separation tower is connected to the top of the inner cavity of the spray tank through a connecting pipe;

[0009] The gas phase outlet at the top of the inner cavity of the separation tower is connected to the bottom end of the condensation straight tube through a pipeline, and the condensation straight tube is fixedly connected to the top of the inner cavity of the spray tank in the vertical direction;

[0010] A spiral heat exchange tube is wound around the outside of the main body of the condensation straight tube, and a spiral cavity is formed between the spiral heat exchange tube and the outer wall of the condensation straight tube.

[0011] Furthermore, the side of the separation tower is connected to the gas phase outlet of the dry distillation and carbonization device through a pipeline.

[0012] Furthermore, the three-layer spraying components are arranged at equal intervals in the vertical direction.

[0013] Furthermore, a gas phase discharge port is provided at the top of the condensation straight tube.

[0014] Furthermore, the bottom end of the clamp cavity is connected to the cooling water inlet pipe, and the top end of the clamp cavity is connected to the cooling water return pipe.

[0015] Furthermore, a guide plate is provided between the outer wall of the condensation straight tube and the spray tank, and the guide plate is located below the connection between the connecting tube and the spray tank.

[0016] Furthermore, the main body side of the spray tank is connected to the wood vinegar storage tank through a pipeline.

[0017] Furthermore, a spray pump is installed on the pipeline between the spray assembly and the spray tank.

[0018] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0019] The utility model can rapidly reduce the temperature of the mixed gas generated by the dry distillation carbonization device through three-layer spray washing, accelerate the precipitation of wood tar and the collection of wood vinegar, and shorten the separation time of wood vinegar and wood tar;

[0020] The utility model can use the cooled wood vinegar as a cooling source to spray and cool the mixed gas in the separation tower, thereby improving the precipitation efficiency of the wood vinegar and wood tar and enhancing the separation effect; it can improve production efficiency, reduce pipeline blockage, and reduce production costs.

[0021] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the internal structure of the spray tank.

[0024] In the figure, 1-separation tower, 2-drying and carbonizing device, 3-spraying assembly, 4-wood tar storage tank, 5-spraying tank, 6-spraying pump, 7-connecting pipe, 8-condensing straight pipe, 9-gas phase discharge port, 10-spiral heat exchange tube, 11-cooling water inlet pipe, 12-cooling water return pipe, 13-guide plate, 14-wood vinegar storage tank. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown together, the utility model provides a device for preventing the blockage of a biomass dry distillation pipeline, comprising a separation tower 1 and a spray tank 5.

[0027] The side of the separation tower 1 is connected to the gas phase outlet of the dry distillation and carbonization device 2 through a pipeline.

[0028] Three layers of spray assemblies 3 are installed on the upper part of the inner cavity of the separation tower 1. The three layers of spray assemblies 3 are arranged at equal intervals in the vertical direction. The spray assemblies 3 are connected to the bottom of the inner cavity of the spray tank 5 through pipelines, and a spray pump 6 is installed on the pipelines.

[0029] The spray assembly 3 can cool the organic matter in the gas phase product of the dry distillation carbonization device 2 to precipitate wood vinegar and wood tar, and the wood vinegar and wood tar are stratified at the bottom of the inner cavity of the separation tower 1 according to different densities.

[0030] The bottom of the inner cavity of the separation tower 1 is connected to the wood tar storage tank 4 through a pipeline, and one side of the bottom of the inner cavity of the separation tower 1 is connected to the top of the inner cavity of the spray tank 5 through a connecting pipe 7.

[0031] After the wood vinegar and wood tar at the bottom of the inner cavity of the separation tower 1 are separated, the wood tar enters the wood tar storage tank 4 through a pipeline for standby use, and the wood vinegar enters the spray tank 5 through a connecting pipe 7 for cooling.

[0032] The gas phase outlet at the top of the inner cavity of the separation tower 1 is connected to the bottom end of the condensation straight tube 8 through a pipeline, and the condensation straight tube 8 is fixedly connected to the top of the inner cavity of the spray tank 5 in the vertical direction. The mixed gas such as wood gas and wood vinegar at the top of the separation tower 1 enters the condensation straight tube 8, and the condensed wood vinegar flows from the bottom end of the condensation straight tube 8 to the bottom of the inner cavity of the spray tank 5.

[0033] A gas phase discharge port 9 is provided at the top of the condensation straight tube 8 .

[0034] A spiral heat exchange tube 10 is wound around the outside of the main body of the condensing straight tube 8, and a spiral cavity is formed between the spiral heat exchange tube 10 and the outer wall of the condensing straight tube 8. The bottom end of the cavity is connected to the cooling water inlet pipe 11, and the top end of the cavity is connected to the cooling water return pipe 12.

[0035] A guide plate 13 is provided between the outer wall of the condensation straight tube 8 and the spray tank 5. The guide plate 13 is located below the connection between the connecting pipe 7 and the spray tank 5. The guide plate 13 guides the wood vinegar liquid in a spiral manner so that it can fully exchange heat with the spiral heat exchange tube 10 to achieve cooling. The cooled wood vinegar liquid is collected at the bottom of the spray tank 5 and can be used for spraying.

[0036] The side of the main body of the spray tank 5 is connected to the wood vinegar storage tank 14 through a pipeline. As the wood vinegar collected by the spray tank 5 increases, it overflows into the wood vinegar storage tank 14 through the pipeline.

[0037] The specific working principle of this utility model:

[0038] The mixed gas generated by the dry distillation carbonization device 2 first enters the separation tower 1, and the temperature of the mixed gas is reduced through three layers of spray washing, so that the organic matter in the gas phase product is cooled to precipitate wood vinegar and wood tar, and the wood vinegar and wood tar are layered at the bottom of the inner cavity of the separation tower 1, and the wood tar enters the wood tar storage tank 4 through the pipeline, and the wood vinegar enters the spray tank 5 through the connecting pipe 7 to achieve cooling under the action of the spiral heat exchange tube 10; the mixed gas such as wood gas and wood vinegar at the top of the separation tower 1 enters the condensation straight pipe 8, and the condensed wood vinegar flows from the bottom of the condensation straight pipe 8 to the bottom of the inner cavity of the spray tank 5. The cooled wood vinegar is collected at the bottom of the spray tank 5, which can be used as a cooling source to spray and cool the mixed gas in the separation tower 1; as the amount of wood vinegar collected in the spray tank 5 increases, it overflows into the wood vinegar storage tank 14 through the pipeline.

[0039] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A device for preventing blockage of a biomass dry distillation pipeline, characterized in that: It comprises a separation tower (1) and a spray tank (5), wherein a three-layer spray assembly (3) is installed at the upper part of the inner cavity of the separation tower (1), and the spray assembly (3) is connected to the bottom of the inner cavity of the spray tank (5) through a pipeline; The bottom of the inner cavity of the separation tower (1) is connected to the wood tar storage tank (4) through a pipeline, and one side of the bottom of the inner cavity of the separation tower (1) is connected to the top of the inner cavity of the spray tank (5) through a connecting pipe (7); The gas phase outlet at the top of the inner cavity of the separation tower (1) is connected to the bottom end of the condensation straight tube (8) through a pipeline, and the condensation straight tube (8) is fixedly connected to the top of the inner cavity of the spray tank (5) in the vertical direction; A spiral heat exchange tube (10) is wound around the outside of the main body of the condensing straight tube (8), and a spiral cavity is formed between the spiral heat exchange tube (10) and the outer wall of the condensing straight tube (8).

2. A device for preventing blockage of a biomass dry distillation pipeline as claimed in claim 1, characterized in that: The side of the separation tower (1) is connected to the gas phase outlet of the dry distillation and carbonization device (2) through a pipeline.

3. A device for preventing blockage of a biomass dry distillation pipeline as claimed in claim 1, characterized in that: The three-layer spraying components (3) are arranged at equal intervals in the vertical direction.

4. A device for preventing blockage of a biomass dry distillation pipeline as claimed in claim 1, characterized in that: A gas phase discharge port (9) is provided at the top end of the condensation straight tube (8).

5. A device for preventing blockage of a biomass dry distillation pipeline as claimed in claim 1, characterized in that: The bottom end of the clamp cavity is connected to a cooling water inlet pipe (11), and the top end of the clamp cavity is connected to a cooling water return pipe (12).

6. A device for preventing blockage of a biomass dry distillation pipeline as claimed in claim 1, characterized in that: A guide plate (13) is provided between the outer wall of the condensation straight pipe (8) and the spray tank (5), and the guide plate (13) is located below the connection between the connecting pipe (7) and the spray tank (5).

7. A device for preventing blockage of a biomass dry distillation pipeline as claimed in claim 1, characterized in that: The side portion of the main body of the spray tank (5) is connected to the wood vinegar storage tank (14) via a pipeline.

8. A device for preventing blockage of a biomass dry distillation pipeline as claimed in claim 1, characterized in that: A spray pump (6) is installed on the pipeline between the spray assembly (3) and the spray tank (5).

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