CN214088397U - Pyrolysis oven and pyrolysis system - Google Patents
Pyrolysis oven and pyrolysis system Download PDFInfo
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- CN214088397U CN214088397U CN202022477928.2U CN202022477928U CN214088397U CN 214088397 U CN214088397 U CN 214088397U CN 202022477928 U CN202022477928 U CN 202022477928U CN 214088397 U CN214088397 U CN 214088397U
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Abstract
The utility model discloses a pyrolysis oven and pyrolysis system. The pyrolysis furnace is internally provided with a screw shaft device, the screw shaft device comprises a screw shaft and screw blades, the screw shaft is of a hollow structure, one end of the screw shaft is provided with a first high-temperature gas inlet, and the other end of the screw shaft is provided with a first low-temperature gas outlet; the spiral blade is arranged on the spiral shaft, is of a hollow structure and is communicated with the hollow structure of the spiral shaft. Adopt this pyrolysis oven can prolong the circulation route and the dwell time of high-temperature gas in the pyrolysis oven, improve the homogeneity of heat distribution in the pyrolysis oven when improving heat utilization efficiency, can further improve pyrolysis efficiency and pyrolysis effect from this.
Description
Technical Field
The utility model belongs to the chemical industry field particularly, relates to pyrolysis oven and pyrolysis system.
Background
In recent years, pyrolysis technology is being applied to solid waste disposal, and pyrolysis treatment of solids has the advantages of no secondary pollution, and real realization of harmlessness, reduction and recycling. At present, the conventional pyrolysis furnace is indirectly heated, and hot flue gas is generally introduced to the outer side of the furnace, so that the heat transferred to the inner part of the furnace is uneven and reaches the central part of the furnace, and the heat is less. The improvement of the heat utilization rate of the pyrolysis furnace is beneficial to improving the efficiency of the furnace and reducing the operation cost.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model discloses an aim at propose pyrolysis oven and pyrolysis system. Adopt this pyrolysis oven can prolong the circulation route and the dwell time of high-temperature gas in the pyrolysis oven, improve the homogeneity of heat distribution in the pyrolysis oven when improving heat utilization efficiency, can further improve pyrolysis efficiency and pyrolysis effect from this.
According to the first aspect of the utility model, the utility model provides a pyrolysis furnace. According to the utility model discloses an embodiment, establish the screw axis device in this pyrolysis oven, the screw axis device includes:
the screw shaft is of a hollow structure, one end of the screw shaft is provided with a first high-temperature gas inlet, and the other end of the screw shaft is provided with a first low-temperature gas outlet;
the spiral blade is arranged on the spiral shaft, is of a hollow structure and is communicated with the hollow structure of the spiral shaft.
According to the utility model discloses above-mentioned embodiment pyrolysis oven can supply with in the stove and treat the pyrolysis raw materials and utilize the screw axis device to supply heat for the pyrolysis treatment, specifically, through screw axis and the helical blade that sets up the cavity intercommunication in the stove, can let in high-temperature gas in to the screw axis, makes high-temperature gas circulate in screw axis and helical blade and provide the heat for lieing in the outside pyrolysis raw materials pyrolysis of screw axis. Wherein, the setting of cavity helical blade not only can further improve the dwell time of high-temperature gas in the pyrolysis oven, is showing and is improving thermal utilization ratio, can also improve the homogeneity of heat distribution in the pyrolysis oven, can further improve pyrolysis treatment's homogeneity and pyrolysis efficiency from this. Therefore, the pyrolysis furnace can improve the pyrolysis efficiency and the pyrolysis effect and can further improve the heat utilization rate.
In addition, the pyrolysis furnace according to the above embodiment of the present invention may further have the following additional technical features:
optionally, the screw shaft is rotatably disposed.
Optionally, the number of the helical blades is multiple, the helical blades are respectively and independently communicated with the helical shaft, and two adjacent helical blades are not communicated.
Optionally, the communication part of the spiral blade and the spiral shaft extends along the length direction of the spiral shaft, or extends along the length direction and the radial direction of the spiral shaft.
Optionally, in the length direction of the screw shaft, two ends of the screw blade are communicated with the hollow structure of the screw shaft, and the middle part of the screw blade is not communicated with the hollow structure of the screw shaft.
Optionally, in the length direction of the screw shaft, the size of a communication part between the screw blade and the screw shaft at the end close to the first high-temperature gas inlet is larger than that at the end close to the first low-temperature gas outlet.
Optionally, the inner diameter of the helical shaft is greater than the thickness of the helical blade.
Optionally, the pyrolysis furnace satisfies at least one of the following conditions: the ratio of the outer diameter of the spiral shaft to the inner diameter of the pyrolysis furnace is 0.3-0.6; the ratio of the distance from the highest point of the spiral blade to the central axis of the spiral shaft to the distance from the inner surface of the pyrolysis furnace to the central axis of the spiral shaft is 0.7-0.9; the spiral shaft and the spiral blades are made of stainless steel or ceramic.
Optionally, an outer cylinder is sleeved outside the pyrolysis furnace, the outer cylinder is provided with a second high-temperature gas inlet and a second low-temperature gas outlet, and a closed air interlayer is formed between the outer surface of the pyrolysis furnace and the inner surface of the outer cylinder. Therefore, heat can be supplied to the pyrolysis raw materials outside the furnace in the furnace, and the pyrolysis efficiency and the pyrolysis effect are greatly improved.
According to a second aspect of the present invention, a pyrolysis system is provided. According to the utility model discloses an embodiment, this pyrolysis system includes above-mentioned pyrolysis oven. Compared with the prior art, the pyrolysis system is high in pyrolysis efficiency and good in pyrolysis effect, the utilization rate of heat can be further improved, and the better energy-saving and environment-friendly effects are achieved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a screw device in a pyrolysis furnace according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a screw device in a pyrolysis furnace according to still another embodiment of the present invention.
Fig. 3 is a schematic structural view of a pyrolysis furnace according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
According to the first aspect of the utility model, the utility model provides a pyrolysis furnace. According to the embodiment of the present invention, the inside of the pyrolysis furnace is provided with the screw shaft device 100, as shown in fig. 1, the screw shaft device 100 includes: a screw shaft 10 and a screw blade 20. The screw shaft 10 is of a hollow structure, one end of the screw shaft 10 is provided with a first high-temperature gas inlet 11, and the other end of the screw shaft 10 is provided with a first low-temperature gas outlet 12; the screw blade 20 is provided on the screw shaft 10, and the screw blade 20 has a hollow structure and communicates with the hollow structure of the screw shaft 10. When the pyrolysis furnace is adopted for pyrolysis treatment, raw materials to be pyrolyzed can be supplied in the furnace, heat is supplied for the pyrolysis treatment by utilizing the spiral shaft device, specifically, high-temperature gas can be introduced into the spiral shaft by arranging the spiral shaft and the spiral blades which are communicated in a hollow mode in the furnace, and the high-temperature gas circulates in the spiral shaft and the spiral blades and provides heat for pyrolysis of the pyrolysis raw materials positioned outside the spiral shaft. Wherein, the setting of cavity helical blade not only can further improve the dwell time of high-temperature gas in the pyrolysis oven, is showing and is improving thermal utilization ratio, can also improve the homogeneity of heat distribution in the pyrolysis oven, can further improve pyrolysis treatment's homogeneity and pyrolysis efficiency from this. Therefore, the pyrolysis furnace can improve the pyrolysis efficiency and the pyrolysis effect and can further improve the heat utilization rate.
The pyrolysis furnace according to the above embodiment of the present invention will be described in detail with reference to fig. 1 to 3.
According to the utility model discloses a specific embodiment, first high-temperature gas entry can be close to the pyrolysis product export of pyrolysis oven and arrange, and first high-temperature gas export can be close to the pyrolysis raw materials entry of treating of pyrolysis oven and arrange, can further improve high-temperature gas's utilization ratio from this.
According to the utility model discloses a still another embodiment, screw axis 10 can be for rotatable setting, from this, not only more is favorable to realizing the even heat supply effect of screw axis device, can also make the screw axis device have the stirring and push away the effect of material pay-off to can avoid the pyrolysis material to agglomerate in the pyrolysis treatment process, and can further improve the homogeneity that the material is heated, improve pyrolysis efficiency and pyrolysis effect, still more be favorable to the transport of pyrolysis material.
According to the utility model discloses a still another embodiment, helical blade 20's number is a plurality of, and a plurality of helical blade 20 can independently communicate with screw axis 10 respectively, and two adjacent helical blade 20 do not communicate, the utility model discloses in through adopting above-mentioned setting, can further prolong high-temperature gas's circulation route to further improve the dwell time of high-temperature gas in the pyrolysis oven, improve thermal utilization ratio. Preferably, the spiral blades 20 may be uniformly distributed on the spiral shaft 10, whereby the uniform heat supply effect of the spiral shaft apparatus may be further improved, thereby making the heat distribution in the pyrolysis furnace more uniform.
According to another embodiment of the present invention, the connection portion between the helical blade 20 and the helical shaft 10 may extend along the length direction of the helical shaft 10, or along the length direction and the radial direction of the helical shaft 10 (as shown in fig. 2), and preferably, the connection portion between the helical blade 20 and the helical shaft 10 extends along the length direction and the radial direction of the helical shaft 10, so as to further improve the circulation path of the high temperature gas, further improve the staying time of the high temperature gas in the pyrolysis furnace, and improve the heat utilization rate.
According to still another embodiment of the present invention, referring to fig. 1, in the length direction of the screw shaft 10, both ends of the screw blade 20 may be communicated with the hollow structure of the screw shaft 10 and the middle portion thereof may not be communicated with the hollow structure of the screw shaft 10. The inventor finds that by adopting the arrangement, the high-temperature gas in the spiral shaft can be guided to enter at one end of the spiral blade close to the first high-temperature gas inlet, and flow out at one end of the spiral blade close to the first high-temperature gas outlet and be merged with the high-temperature gas in the spiral shaft, and the high-temperature gas entering the spiral blade can be further ensured to have enough residence time, so that the heat utilization rate can be further improved. Further, in the length direction of the screw shaft 10, the size of the communication part between the screw blade 20 and the screw shaft 10 at the end close to the first high-temperature gas inlet 11 is larger than the size of the communication part at the end close to the first low-temperature gas outlet 12, so that not only can the gas in the screw shaft be further favorably guided to flow towards the screw blade, but also the high-temperature gas in the screw blade can be more favorably promoted to flow towards the end close to the low-temperature gas outlet, and therefore, the flow direction of the high-temperature gas can be more favorably guided, and the heat utilization rate of the high-temperature gas can be improved. It should be noted that the dimension may include the dimension of the communicating portion in the axial direction and the radial direction of the screw shaft.
According to still another embodiment of the present invention, the inner diameter of the screw shaft 10 may be larger than the thickness d (shown in fig. 2) of the screw blade, thereby further ensuring that the high-temperature gas in the screw shaft flows toward the direction of the screw blade. It should be noted that, the thickness of the helical blade in the present invention refers to: the distance of the helical blades in a direction along the circumference of the helical shaft in a direction perpendicular to the length of the helical shaft. The thickness may be a fixed value or a gradually varying range, for example, the thickness of the helical blade may gradually decrease as the helical blade extends in the length direction and/or the radial direction of the helical shaft, and the inner diameter of the helical shaft may be greater than the maximum thickness of the helical blade.
According to another embodiment of the present invention, the inner diameter of the screw shaft 10 may be as large as possible under the condition of satisfying the structure of the pyrolysis furnace, and thus the inner diameter of the screw shaft may be much larger than the thickness of the helical blade, thereby ensuring the flow of the high temperature gas to the direction of the helical blade. Further, the ratio of the outer diameter of the screw shaft 10 to the inner diameter of the pyrolysis furnace may be 0.3 to 0.6, for example, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, and the like, so that not only can a sufficient space be provided for pyrolysis of the raw material, and the stability of the furnace body in the pyrolysis treatment process is ensured, but also sufficient heat source distribution can be provided for pyrolysis of the raw material, thereby being more beneficial to improving the retention time of the high-temperature gas in the pyrolysis furnace and the uniformity of heat distribution in the pyrolysis furnace, and further improving the pyrolysis efficiency and effect.
According to a further embodiment of the present invention, the height h (shown with reference to fig. 1) of the helical blade 20 may be as high as possible without rubbing against the inner surface of the pyrolysis furnace by the calculation of the expansion, whereby the uniformity of the heat distribution in the pyrolysis furnace may be further improved. For example, the ratio of the distance from the highest point of the helical blade to the central axis of the helical shaft to the distance from the inner surface of the pyrolysis furnace to the central axis of the helical shaft may be 0.7-0.9, for example, 0.7, 0.75, 0.8, 0.85 or 0.9, and the like, so that not only the uniformity of heat distribution in the pyrolysis furnace can be further improved, but also the effects of material stirring and material pushing and feeding can be further improved when the helical shaft rotates, thereby being more beneficial to the smooth operation of pyrolysis treatment, and also ensuring the pyrolysis efficiency and effect. The height of the screw blade means a distance from the screw blade to an outer surface of the screw shaft in a direction toward the central axis of the screw shaft, and the highest point of the screw blade means a point where the screw blade has the greatest distance from the outer surface of the screw shaft in the direction toward the central axis of the screw shaft.
According to another embodiment of the present invention, the material of the screw shaft 10 and the screw blade 20 may be stainless steel or ceramic, preferably stainless steel, such as stainless steel 310s, so as to further improve the heat conduction effect of the screw shaft device, thereby further improving the pyrolysis efficiency and effect.
According to another embodiment of the present invention, as shown in fig. 3, an outer cylinder 200 may be sleeved outside the furnace, the outer cylinder 200 may have a second high-temperature gas inlet 210 and a second low-temperature gas outlet 220, and a sealed air interlayer 230 may be formed between the outer surface of the pyrolysis furnace and the inner surface of the outer cylinder 200. Therefore, heat can be supplied to the pyrolysis raw materials outside the furnace in the furnace, and the pyrolysis efficiency and the pyrolysis effect are greatly improved.
According to still another embodiment of the present invention, the second high temperature gas inlet 210 may be disposed adjacent to a pyrolysis product outlet of the pyrolysis furnace, and the second low temperature gas outlet 220 may be disposed adjacent to a raw material inlet to be pyrolyzed of the pyrolysis furnace, whereby the utilization rate of the high temperature gas may be further improved. Further, the furnace shell of the pyrolysis furnace can be rotatably arranged relative to the outer cylinder, so that the stirring effect of the pyrolysis raw materials in the furnace can be further improved.
According to the utility model discloses a still another embodiment, when adopting this pyrolysis oven to carry out pyrolysis treatment, high-temperature gas's temperature can be for 800 ~ 900 ℃, can further guarantee the pyrolysis effect from this.
To sum up, the above embodiment pyrolysis oven of the utility model discloses above-mentioned embodiment can have following advantage: 1) the raw materials to be pyrolyzed can be supplied in the furnace and heat can be supplied for pyrolysis treatment by utilizing the spiral shaft device, and particularly, high-temperature gas can be introduced into the spiral shaft by arranging the spiral shaft and the spiral blades which are communicated in a hollow mode in the furnace, so that the high-temperature gas can circulate in the spiral shaft and the spiral blades and provide heat for pyrolysis of the pyrolysis raw materials positioned outside the spiral shaft. Wherein, the setting of cavity helical blade not only can further improve the dwell time of high-temperature gas in the pyrolysis oven, is showing and is improving thermal utilization ratio, can also improve the homogeneity of heat distribution in the pyrolysis oven, can further improve pyrolysis treatment's homogeneity and pyrolysis efficiency from this. 2) The pyrolysis efficiency and effect can be further improved by optimizing the structures and the arrangement modes of the helical blades and the helical shaft. 3) The high-temperature interlayer can be further formed outside the pyrolysis furnace, and the pyrolysis raw materials in the furnace are indirectly heated through the pyrolysis furnace shell, so that heat can be supplied to the pyrolysis raw materials outside the furnace in the furnace, and the pyrolysis efficiency and the pyrolysis effect are greatly improved.
According to a second aspect of the present invention, a pyrolysis system is provided. According to the utility model discloses an embodiment, this pyrolysis system includes above-mentioned pyrolysis oven. Compared with the prior art, the pyrolysis system is high in pyrolysis efficiency and good in pyrolysis effect, the utilization rate of heat can be further improved, and the better energy-saving and environment-friendly effects are achieved. It should be noted that the features and effects described for the pyrolysis furnace are also applicable to the pyrolysis system, and are not described in detail herein.
In the description of the present invention, it is to be understood that the terms "center", "length", "thickness", "upper", "lower", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A pyrolysis furnace is characterized in that a spiral shaft device is arranged in the furnace, and the spiral shaft device comprises:
the screw shaft is of a hollow structure, one end of the screw shaft is provided with a first high-temperature gas inlet, and the other end of the screw shaft is provided with a first low-temperature gas outlet;
the spiral blade is arranged on the spiral shaft, is of a hollow structure and is communicated with the hollow structure of the spiral shaft.
2. The pyrolysis furnace of claim 1, wherein the screw shaft is rotatably disposed.
3. The pyrolysis furnace of claim 1, wherein the number of the spiral blades is plural, the plural spiral blades are respectively and independently communicated with the spiral shaft, and two adjacent spiral blades are not communicated with each other.
4. The pyrolysis furnace of claim 1, wherein the connection part of the screw blade and the screw shaft extends along the length direction of the screw shaft, or extends along the length direction and the radial direction of the screw shaft.
5. The pyrolysis furnace of any one of claims 1 to 4, wherein in the length direction of the screw shaft, two ends of the screw blade are communicated with the hollow structure of the screw shaft, and the middle of the screw blade is not communicated with the hollow structure of the screw shaft.
6. The pyrolysis furnace of claim 5, wherein the size of a portion of the screw shaft, which is in communication with the screw blade at an end near the first high-temperature gas inlet, is larger than that of a portion of the screw shaft, which is in communication with the first low-temperature gas outlet, in the longitudinal direction of the screw shaft.
7. The pyrolysis furnace of claim 1 or 6, wherein an inner diameter of the screw shaft is larger than a thickness of the screw blade.
8. A pyrolysis furnace according to claim 1, characterized in that at least one of the following conditions is fulfilled:
the ratio of the outer diameter of the spiral shaft to the inner diameter of the pyrolysis furnace is 0.3-0.6;
the ratio of the distance from the highest point of the spiral blade to the central axis of the spiral shaft to the distance from the inner surface of the pyrolysis furnace to the central axis of the spiral shaft is 0.7-0.9;
the spiral shaft and the spiral blades are made of stainless steel or ceramic.
9. The pyrolysis furnace of claim 1, wherein an outer cylinder is sleeved outside the furnace, the outer cylinder is provided with a second high-temperature gas inlet and a second low-temperature gas outlet, and a closed air interlayer is formed between the outer surface of the pyrolysis furnace and the inner surface of the outer cylinder.
10. A pyrolysis system comprising the pyrolysis furnace according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022477928.2U CN214088397U (en) | 2020-10-30 | 2020-10-30 | Pyrolysis oven and pyrolysis system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022477928.2U CN214088397U (en) | 2020-10-30 | 2020-10-30 | Pyrolysis oven and pyrolysis system |
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| Publication Number | Publication Date |
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| CN214088397U true CN214088397U (en) | 2021-08-31 |
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| CN202022477928.2U Active CN214088397U (en) | 2020-10-30 | 2020-10-30 | Pyrolysis oven and pyrolysis system |
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| CN (1) | CN214088397U (en) |
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- 2020-10-30 CN CN202022477928.2U patent/CN214088397U/en active Active
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