Device for quickly condensing and collecting pyrolysis gas

Abstract

The utility model provides a device for quickly condensing and collecting pyrolysis gas. The device comprises a pyrolysis gas pipeline, a heating device, a condensing box and a temperature controller, the pyrolysis gas pipeline is detachably arranged on the condensation box, the pyrolysis gas pipeline sequentially comprises an inlet, a heat preservation area, a condensation area and an outlet according to the flow direction, pyrolysis gas is introduced through the inlet, non-condensable gas flows out through the outlet, and the condensation area is located in the condensation box and used for condensing the pyrolysis gas; the heating device is used for carrying out heat supply and heat preservation on the pyrolysis gas in the heat preservation area; and the heating device and the condensing box are both connected with the temperature controller. Compared with the prior art, the heating device is additionally arranged before condensation and collection of the pyrolysis gas, heat supply and heat preservation are carried out on the pyrolysis gas, small molecules in the pyrolysis gas do not generate polymerization reaction before condensation, and the quality of liquid products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of pyrolysis, in particular to a device for rapid condensation and collection of pyrolysis gas. Background Art

[0002] At present, biomass pyrolysis is one of the most effective ways to effectively utilize biomass energy. It directly pyrolyzes biomass to produce pyrolysis gas and solid products (such as biochar). In this pyrolysis process, the cooling method of pyrolysis gas is very critical, which directly affects the collection rate of liquid product bio-oil. If the temperature of pyrolysis gas drops too quickly after leaving the pyrolysis furnace and is not condensed in time, the small molecules in the pyrolysis gas are easily polymerized, affecting the quality of bio-oil and increasing the cost of biomass pyrolysis liquefaction oil production.

[0003] Chen Yifan disclosed a high-temperature fluidized bed coal / biomass pyrolysis tar condensation and filtration collection device in Chinese utility model patent CN 209128368 U, including a first-stage condensation absorption device, a second-stage filtration collection device and a third-stage filtration collection device connected in series in sequence, the first-stage condensation absorption device includes a low-temperature bath containing anhydrous ethanol and a quartz serpentine tube immersed therein, the second-stage filtration collection device includes a plurality of filters connected in series, the quartz serpentine tube is connected to the first filter, and the third-stage filtration collection device includes a plurality of parallel pre-filtering devices, the pre-filtering device has a glass fiber filter cartridge, and a pipe clamp for opening and closing the filter passage is provided at the front end of the pre-filtering device. The device can be applied to the condensation and absorption of tar vapor from rapid pyrolysis, but the small molecules in the pyrolysis gas in this scheme may affect the quality of bio-oil due to polymerization, and the device is relatively complex and inconvenient to operate. Utility Model Content

[0004] In order to overcome at least one of the shortcomings and deficiencies of the prior art, the utility model provides a device for rapid condensation and collection of pyrolysis gas. The setting of a heating device can prevent small molecules in the pyrolysis gas from polymerizing and affecting the quality of bio-oil. The device has a simple structure and is easy to operate.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions.

[0006] The utility model provides a device for rapid condensation and collection of pyrolysis gas, comprising a pyrolysis gas pipeline, a heating device, a condensation box and a temperature controller;

[0007] The pyrolysis gas pipeline is detachably arranged on the condensation box, wherein the pyrolysis gas pipeline includes an inlet, a heat preservation area, a condensation area and an outlet in sequence according to the flow direction, the pyrolysis gas is introduced through the inlet, and the non-condensable gas flows out through the outlet, and the condensation area is located in the condensation box and is used to condense the pyrolysis gas;

[0008] The heating device is used to provide heat and keep the pyrolysis gas in the insulation zone warm;

[0009] The heating device and the condensing box are both connected to the temperature controller.

[0010] The high-temperature pyrolysis gas enters from the pyrolysis gas inlet, passes through the insulation zone, and is heated and insulated by the combined action of the heating device. Then, it passes through the condensation zone located in the condensation box and is quickly condensed. The condensed liquid product adheres to the tube wall of the condensation zone, and the remaining non-condensable gas flows out through the outlet.

[0011] A further improvement to the utility model further comprises a heat insulating pad, wherein the heat insulating pad is located between the heating device and the condensation box.

[0012] In a further improvement of the utility model, the heating device is a flexible electric heating insulation sleeve, which is coated on the outer wall of the insulation zone. The flexible electric heating insulation sleeve wraps the insulation zone, and the flexible electric heating insulation sleeve is connected to the temperature controller to control the temperature of the flexible electric heating insulation sleeve.

[0013] In a further improvement to the present invention, the heating temperature of the heating device is set to 200-250°C.

[0014] In a further improvement to the present invention, the condensation temperature of the condensation box is set to -10 to -5°C.

[0015] As a further improvement to the present invention, the size of the pyrolysis gas pipeline is adjusted as required.

[0016] As a further improvement to the utility model, the pyrolysis gas pipeline is convenient to disassemble, thereby facilitating the transfer of the condensed organic liquid for subsequent utilization.

[0017] As a further improvement to the utility model, the pipeline in the condensation zone is arranged in a serpentine shape.

[0018] A further improvement to the present invention is that the temperature controller includes a first control module and a second control module, the first control module is connected to the heating device and is used to control the heating temperature of the heating device, and the second control module is connected to the condensing box and is used to control the condensing temperature of the condensing box.

[0019] A further improvement of the utility model further comprises a non-condensable gas collecting device, wherein the non-condensable gas collecting device is connected to the outlet of the pyrolysis gas pipeline.

[0020] As a further improvement to the utility model, the device for rapid condensation and collection of pyrolysis gas is arranged in a biomass pyrolysis system to condense the pyrolysis gas.

[0021] Compared with the prior art, the above technical solutions conceived by the present invention can at least achieve the following technical effects:

[0022] 1. The utility model is provided with a heating device before the pyrolysis gas is condensed and collected. The heating device can heat and insulate the pyrolysis gas. By providing insulation before the pyrolysis gas is condensed, the small molecules in the pyrolysis gas will not undergo polymerization reaction before condensation, thus avoiding the problem of polymerization of small molecules in the pyrolysis gas and ensuring the quality of the liquid product.

[0023] 2. The utility model integrates the heating and heat preservation device and the low-temperature condensing device together and controls them through a controller, so that the device has a simple structure, is easy to operate, and saves space. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, among which:

[0025] Figure 1 A schematic diagram of the structure of a device for rapid condensation and collection of pyrolysis gas provided in an embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of a pyrolysis gas pipeline in an embodiment of the utility model;

[0027] Figure 3 Schematic diagram of the arrangement of the embodiment of the utility model in the biomass pyrolysis system;

[0028] In the accompanying drawings, there are an inlet 1, a heat preservation zone 2, a condensation zone 3, an outlet 4, a heating device 5, an insulation pad 6, a condensation box 7, a temperature controller 8, a pyrolysis device 100, a device for quickly condensing and collecting pyrolysis gas 200, and a non-condensable gas collection device 300. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In addition, in the following embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] It should be pointed out that if directional terms such as "upper", "lower", "front", "back", "left", "right" and the like appear in the following embodiments, the directions indicated are based on the directions of the reference drawings and are only for the convenience of describing the present invention and simplifying the description. Therefore, the directional terms used are used for illustration and not for limiting the present invention.

[0032] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0033] Example 1

[0034] See also Figure 1-2 , the present embodiment provides a device for rapid condensation and collection of pyrolysis gas, comprising a pyrolysis gas pipeline, a heating device 5, a condensation box 7 and a temperature controller 8;

[0035] The pyrolysis gas pipeline is detachably arranged on the condensation box 7, wherein the pyrolysis gas pipeline includes an inlet 1, a heat preservation area 2, a condensation area 3 and an outlet 4 in sequence according to the flow direction, the pyrolysis gas is introduced through the inlet 1, and the non-condensable gas flows out through the outlet 4, and the condensation area 3 is located in the condensation box 7, and is used to condense the pyrolysis gas;

[0036] The heating device 5 is used to provide heat and keep the pyrolysis gas in the heat preservation zone 2 warm;

[0037] The heating device 5 and the condensation box 7 are both connected to the temperature controller 8 .

[0038] In this embodiment, the heating device 5 is a flexible electric heating and heat preservation sleeve. By adopting the flexible electric heating and heat preservation sleeve, the heating device can be arranged more in accordance with the shape of the pipeline.

[0039] In this embodiment, the heating temperature of the heating device 5 is set to 200-250°C.

[0040] Example 2

[0041] See also Figure 1-2 , the present embodiment provides a device for rapid condensation and collection of pyrolysis gas, comprising a pyrolysis gas pipeline, a heating device 5, a condensation box 7 and a temperature controller 8;

[0042] The pyrolysis gas pipeline is detachably arranged on the condensation box 7, wherein the pyrolysis gas pipeline includes an inlet 1, a heat preservation area 2, a condensation area 3 and an outlet 4 in sequence according to the flow direction, the pyrolysis gas is introduced through the inlet 1, and the non-condensable gas flows out through the outlet 4, and the condensation area 3 is located in the condensation box 7, and is used to condense the pyrolysis gas;

[0043] The heating device 5 is used to provide heat and keep the pyrolysis gas in the heat preservation zone 2 warm;

[0044] The heating device 5 and the condensation box 7 are both connected to the temperature controller 8 .

[0045] In this embodiment, the temperature controller 8 is connected to the heating device 5 and the condensing box 7 at the same time. Preferably, the temperature controller 8 includes two control modules. The first control module on the left side of the figure is connected to the heating device 5, and is used to control the heating temperature of the heating device 5; the second control module on the right side is connected to the condensing box 7, and is used to control the condensing temperature of the condensing box 7.

[0046] Example 3

[0047] See also Figure 1-2 , the present embodiment provides a device for rapid condensation and collection of pyrolysis gas, comprising a pyrolysis gas pipeline, a heating device 5, a condensation box 7 and a temperature controller 8;

[0048] The pyrolysis gas pipeline is detachably arranged on the condensation box 7, wherein the pyrolysis gas pipeline includes an inlet 1, a heat preservation area 2, a condensation area 3 and an outlet 4 in sequence according to the flow direction, the pyrolysis gas is introduced through the inlet 1, and the non-condensable gas flows out through the outlet 4, and the condensation area 3 is located in the condensation box 7, and is used to condense the pyrolysis gas;

[0049] The heating device 5 is used to provide heat and keep the pyrolysis gas in the heat preservation zone 2 warm;

[0050] The heating device 5 and the condensation box 7 are both connected to the temperature controller 8 .

[0051] In this embodiment, the pyrolysis gas pipeline is as follows Figure 2 As shown, the size (pipe diameter, length, etc.) of the pyrolysis gas pipeline can be adjusted as needed.

[0052] In this embodiment, the pyrolysis gas pipeline is easy to disassemble and can be directly taken out after removing the heating device 5 and opening the cover of the condensation box 7, which is conducive to transferring the condensed organic liquid for subsequent use.

[0053] Example 4

[0054] See also Figure 1-2 , the present embodiment provides a device for rapid condensation and collection of pyrolysis gas, comprising a pyrolysis gas pipeline, a heating device 5, a condensation box 7 and a temperature controller 8;

[0055] The pyrolysis gas pipeline is detachably arranged on the condensation box 7, wherein the pyrolysis gas pipeline includes an inlet 1, a heat preservation area 2, a condensation area 3 and an outlet 4 in sequence according to the flow direction, the pyrolysis gas is introduced through the inlet 1, and the non-condensable gas flows out through the outlet 4, and the condensation area 3 is located in the condensation box 7, and is used to condense the pyrolysis gas;

[0056] The heating device 5 is used to provide heat and keep the pyrolysis gas in the heat preservation zone 2 warm;

[0057] The heating device 5 and the condensation box 7 are both connected to the temperature controller 8 .

[0058] In this embodiment, the pipeline of the condensation area 3 is arranged in a serpentine shape. It is understandable that in other embodiments, other arrangements may also be adopted.

[0059] Example 5

[0060] See also Figure 1-2 , the present embodiment provides a device for rapid condensation and collection of pyrolysis gas, comprising a pyrolysis gas pipeline, a heating device 5, a condensation box 7 and a temperature controller 8;

[0061] The pyrolysis gas pipeline is detachably arranged on the condensation box 7, wherein the pyrolysis gas pipeline includes an inlet 1, a heat preservation area 2, a condensation area 3 and an outlet 4 in sequence according to the flow direction, the pyrolysis gas is introduced through the inlet 1, and the non-condensable gas flows out through the outlet 4, and the condensation area 3 is located in the condensation box 7, and is used to condense the pyrolysis gas;

[0062] The heating device 5 is used to provide heat and keep the pyrolysis gas in the heat preservation zone 2 warm;

[0063] The heating device 5 and the condensation box 7 are both connected to the temperature controller 8 .

[0064] In this embodiment, the condensation temperature of the condensation box 7 is set to -10 to -5°C.

[0065] The condensation box 7 is an existing mature product, and its structure and working principle are not described in detail here.

[0066] The above embodiment provides a device for rapid condensation and collection of pyrolysis gas, wherein the pyrolysis gas pipeline includes a pyrolysis gas inlet 1, a heat preservation zone 2, a condensation zone 3 and an outlet 4, and the flow direction is sequentially the pyrolysis gas inlet 1, the heat preservation zone 2, the condensation zone 3 and the outlet 4, the heating device 5 is connected to the temperature controller 8, the condensation zone 3 is located in the condensation box 7, the heating device 5 and the condensation box 7 are separated by an insulation pad 6, and the condensation box 7 is connected to the temperature controller 8. The high-temperature pyrolysis gas enters from the pyrolysis gas inlet 1, passes through the heat preservation zone 2 heated by the heating device 5, is heated and insulated, and then passes through the condensation zone 3 arranged in the condensation box 7 to be rapidly condensed, the condensed liquid product adheres to the tube wall of the condensation zone 3, and the remaining non-condensable gas flows out through the outlet 4 to realize the condensation of the pyrolysis gas. The above embodiment of the utility model provides a device for rapid condensation and collection of pyrolysis gas, which has a simple structure and is easier to operate.

[0067] The schematic diagram of the arrangement of the device provided in the above embodiment of the utility model in the biomass pyrolysis system is as follows Figure 3 As shown, the biomass pyrolysis system includes a pyrolysis device 100, a device 200 for rapid condensation and collection of pyrolysis gas, and a non-condensable gas collection device 300. After the biomass is pyrolyzed in the pyrolysis device 1, the generated pyrolysis gas enters the device 200 for rapid condensation and collection of pyrolysis gas through a pipeline to achieve rapid condensation and collection, and the remaining non-condensable gas enters the non-condensable gas collection device 300 to be collected.

[0068] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0069] The circuits and internal electronic components, modules, etc. involved are all prior art and can be fully implemented by those skilled in the art without elaboration. The present utility model does not involve improvements to the control module.

[0070] The implementation methods of the present utility model are not limited to the above-mentioned embodiments, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be considered as equivalent replacement methods and shall be included in the protection scope of the present invention.

Claims

1. A device for rapid condensation and collection of pyrolysis gas, characterized in that: It comprises a pyrolysis gas pipeline, a heating device (5), a condensation box (7) and a temperature controller (8); The pyrolysis gas pipeline is detachably arranged on the condensation box (7), wherein the pyrolysis gas pipeline comprises an inlet (1), a heat preservation zone (2), a condensation zone (3) and an outlet (4) in sequence according to the flow direction, the pyrolysis gas is introduced through the inlet (1), and the non-condensable gas flows out through the outlet (4), and the condensation zone (3) is located in the condensation box (7) and is used to condense the pyrolysis gas; The heating device (5) is used to provide heat and keep the pyrolysis gas in the heat preservation zone (2); The heating device (5) and the condensation box (7) are both connected to a temperature controller (8).

2. The device for rapid condensation and collection of pyrolysis gas according to claim 1, characterized in that: It also includes a heat insulation pad (6), which is located between the heating device (5) and the condensation box (7).

3. The device for rapid condensation and collection of pyrolysis gas according to claim 1, characterized in that: The heating device (5) is a flexible electric heating insulation sleeve, which is coated on the outer wall of the insulation zone (2).

4. The device for rapid condensation and collection of pyrolysis gas according to claim 1, characterized in that: The heating temperature of the heating device (5) is set to 200-250°C.

5. The device for rapid condensation and collection of pyrolysis gas according to claim 1, characterized in that: The condensation temperature of the condensation box (7) is set to -10 to -5°C.

6. The device for rapid condensation and collection of pyrolysis gas according to claim 1, characterized in that: The size of the pyrolysis gas pipeline is adjusted as required.

7. The device for rapid condensation and collection of pyrolysis gas according to claim 1, characterized in that: The pipelines in the condensation zone (3) are arranged in a serpentine shape.

8. The device for rapid condensation and collection of pyrolysis gas according to claim 1, characterized in that: The temperature controller (8) comprises a first control module and a second control module, the first control module being connected to the heating device (5) and used for controlling the heating temperature of the heating device (5), and the second control module being connected to the condensation box (7) and used for controlling the condensation temperature of the condensation box (7).

9. The device for rapid condensation and collection of pyrolysis gas according to claim 1, characterized in that: It also includes a non-condensable gas collecting device, which is connected to the outlet (4) of the pyrolysis gas pipeline.

10. A device for rapid condensation and collection of pyrolysis gas according to any one of claims 1 to 9, characterized in that: The device is arranged in a biomass pyrolysis system and is used for condensing pyrolysis gas.

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