CN214233968U - Drying equipment and schizolysis system with raise material function - Google Patents

Abstract

The application discloses a drying device with a material lifting function and a cracking system, wherein the drying device comprises a drying inner cylinder and a drying outer cylinder; two ends of the drying outer cylinder are hermetically sleeved on the periphery of the drying inner cylinder, and the drying inner cylinder rotates relative to the fixedly arranged drying outer cylinder; a spiral drying cavity and/or a spiral heating sheet are fixedly arranged in the drying inner barrel, the spiral drying cavity is isolated from the inside of the drying inner barrel and is communicated with the drying outer barrel, and the cavity wall of the spiral drying cavity is used for transferring heat with materials in the drying inner barrel; the spiral heating sheet and the spiral drying cavity are arranged adjacently along the axial direction, a second spiral feeding channel formed by the spiral heating sheet is continuous with a first spiral feeding channel formed by the spiral drying cavity, the drying inner cylinder is internally and fixedly provided with a material lifting device, and the material lifting device is positioned in the first spiral feeding channel and/or the second spiral feeding channel. This application material can be raised by the lifting device in transportation process, avoids the material deposit, has improved drying efficiency, has improved the stoving effect.

Description

Drying equipment and schizolysis system with raise material function

Technical Field

The utility model relates to a chemical industry equipment technical field, in particular to drying equipment with material raising function. The utility model discloses still relate to a schizolysis system who contains this drying equipment with raise material function.

Background

The cracking system is common production equipment in the chemical field and is used for heating and cracking materials to obtain required substances. Cracking systems typically include a cracking unit and a drying unit, through which some of the material is dried before entering the cracking unit. Be provided with helical structure in the drying equipment, along with drying equipment slowly rotates, helical structure rotates together for the material can only move to the discharge end along with helical structure in proper order, and most material all deposits in helical structure's bottom, has seriously influenced the stoving effect of material, how to improve drying efficiency, and it is the problem that the skilled person in the art needs a lot of solution to improve the stoving effect.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a drying equipment with raise material function to improve its drying efficiency, improve the stoving effect.

Another object of the utility model is to provide a cracking system who contains this drying equipment with raise material function to improve work efficiency, improve the schizolysis effect.

In order to achieve the above purpose, the utility model provides the following technical scheme:

a drying device with a material lifting function comprises a drying inner cylinder and a drying outer cylinder;

the two ends of the drying outer cylinder are hermetically sleeved on the periphery of the drying inner cylinder, the drying inner cylinder rotates relative to the drying outer cylinder which is fixedly arranged, and heating gas is introduced into the drying outer cylinder;

a spiral drying cavity and/or a spiral heating sheet are fixedly arranged in the drying inner barrel, the interior of the spiral drying cavity is isolated from the interior of the drying inner barrel, the spiral drying cavity is communicated with the drying outer barrel and is used for introducing heating gas of the drying outer barrel into the spiral drying cavity, a first spiral feeding channel is defined by the side wall of the spiral drying cavity and the inner wall of the drying inner barrel, and the cavity wall of the spiral drying cavity is used for transferring heat with materials in the drying inner barrel; the spiral heating sheet and the spiral drying cavity are arranged adjacently along the axial direction, and a second spiral feeding channel formed by the spiral heating sheet is continuous with the first spiral feeding channel;

and a material lifting device is fixedly arranged in the drying inner cylinder and is positioned in the first spiral feeding channel and/or the second spiral feeding channel.

Preferably, in the above drying apparatus, the material lifting device includes a fixing seat and a material lifting portion, the fixing seat is fixed to the inner wall of the drying inner cylinder or the side wall of the spiral drying cavity or the spiral heating sheet, and the material lifting portion is fixed to the fixing seat.

Preferably, in the above drying apparatus, the material lifting part has a plate-shaped structure or a fence-shaped structure.

Preferably, in the above drying apparatus, the height of the material lifting device is less than or equal to the height of the first spiral feeding channel and the height of the second spiral feeding channel.

Preferably, in the above drying apparatus, the material lifting device is detachably mounted in the drying inner cylinder.

Preferably, in the above drying apparatus, the spiral drying cavity is an annular spiral drying cavity, and a radial distance exists between an inner ring of the annular spiral drying cavity and an axis of the drying inner cylinder.

Preferably, in the above drying apparatus, the spiral heating plate is an annular spiral heating plate, and a radial distance exists between an inner ring of the annular spiral heating plate and an axis of the drying inner cylinder.

Preferably, in the above drying apparatus, the feeding end of the drying inner cylinder is hermetically and rotatably connected with a fixedly arranged feeding cover, and the feeding cover is provided with a feeding hole; the discharging end of the drying inner cylinder is in sealed rotary connection with a fixedly arranged discharging cover, and the discharging cover is provided with a discharging hole; the feeding cover and/or the discharging cover are/is also provided with a gas through hole.

Preferably, in the above drying apparatus, the outer wall of the drying inner drum is provided with heating fins.

The utility model also provides a cracking system, including drying equipment and pyrolysis furnace, drying equipment's discharge end with the feed arrangement intercommunication of pyrolysis furnace, drying equipment is according to any one of claim 1-9 drying equipment.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a drying device, a spiral drying cavity and/or a spiral heating plate are arranged in a drying inner cylinder which is rotationally arranged relative to a drying outer cylinder, the spiral drying cavity is isolated from the inside of the drying inner cylinder, the spiral drying cavity is communicated with the drying outer cylinder, the spiral heating plate is fixed on the inner wall of the drying inner cylinder, a first spiral feeding channel formed by the spiral drying cavity is continuous with a second spiral feeding channel formed by the spiral heating plate; the inner wall of the drying inner barrel is provided with a material lifting device, the material lifting device is fixed in the first spiral feeding channel and/or the second spiral feeding channel, in the rotating process of the drying inner barrel, the spiral drying cavity and the spiral heating sheet rotate together, materials move in the first spiral feeding channel and the second spiral feeding channel along tracks, when the materials move to the position of the material lifting device, the material lifting device wraps the materials, after the material lifting device rotates to a certain height along with the drying inner barrel, the materials are thrown from the material lifting device and have scattering effect on the materials, so that the materials can not move only along the inner parts of the first spiral feeding channel and the second spiral feeding channel, the materials are prevented from being deposited at the bottom of the spiral feeding channel, the materials can be in direct contact with heat, the drying efficiency is improved, and the drying effect is improved.

The utility model provides a cracking system has adopted the drying equipment who has the material raising function in this application, consequently, the material that gets into before the pyrolysis furnace is dried through drying equipment, and drying efficiency is high, has improved the holistic work efficiency of cracking system, and the material obtains better stoving, is favorable to the cracking reaction in the pyrolysis furnace, has improved the schizolysis effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of a drying apparatus with a material lifting function provided in an embodiment of the present invention;

fig. 2 is a schematic side view of the drying apparatus of fig. 1;

fig. 3 is a schematic structural view of a material lifting device of a drying apparatus with a material lifting function according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another drying apparatus with a material lifting function according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another drying apparatus with a material lifting function according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a cracking system according to an embodiment of the present invention.

Wherein, 1 is a feeding cover, 11 is a feeding hole, 2 is a drying inner cylinder, 3 is a drying outer cylinder, 31 is a heating gas inlet, 32 is a heating gas outlet, 4 is a spiral drying cavity, 41 is a vent hole, 5 is an airflow guide plate, 6 is a discharging cover, 61 is a discharging hole, 62 is a second gas through hole, 7 is a rotary supporting device, 71 is a supporting ring, 72 is a supporting wheel, 8 is a driving device, 81 is a gear ring, 82 is a transmission gear, 9 is a heating fin, 101 is a feeding device, 102 is a tail gas discharging hole, 103 is a combustion cylinder, 104 is a cracking cylinder, 105 is a cracking gas outlet, 106 is an air supplementing hole, 20 is a spiral heating sheet, 30 is a material lifting device, 301 is a fixed seat, and 302 is a material lifting part.

Detailed Description

The core of the utility model is to provide a drying equipment with raise material function, improved its drying efficiency, improved the stoving effect.

The utility model also provides a schizolysis system that contains this drying equipment with raise material function, improved work efficiency, improved the schizolysis effect.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 5, an embodiment of the present invention provides a drying apparatus with a material lifting function, hereinafter referred to as a drying apparatus for short, the drying apparatus includes a drying inner cylinder 2 and a drying outer cylinder 3, wherein two ends of the drying inner cylinder 2 are a feeding end and a discharging end respectively; the two ends of the drying outer cylinder 3 are hermetically sleeved on the periphery of the drying inner cylinder 2, the drying inner cylinder 2 rotates relative to the fixedly arranged drying outer cylinder 3, the wall of the drying outer cylinder 3 is provided with a heating gas inlet 31 and a heating gas outlet 32, and heating gas is introduced into the drying outer cylinder 3; a spiral drying cavity 4 and/or a spiral heating sheet 20 are fixedly arranged in the drying inner barrel 2, wherein the spiral drying cavity 4 is spirally arranged in the drying inner barrel 2 along the axial direction of the drying inner barrel 2, a spiral airflow channel is formed in the spiral drying cavity 4, the interior of the spiral drying cavity 4 is isolated from the interior of the drying inner barrel 2, the spiral drying cavity 4 is communicated with the drying outer barrel 3 and is used for introducing heating gas of the drying outer barrel 3 into the spiral drying cavity 4, a first spiral feeding channel is defined by the side wall of the spiral drying cavity 4 and the inner wall of the drying inner barrel 2, and the cavity wall of the spiral drying cavity 4 is used for transferring heat with materials in the drying inner barrel 2; the spiral heating sheet 20 is spirally arranged in the drying inner barrel 2 along the axial direction of the drying inner barrel 2, the spiral heating sheet 20 is fixed with the inner wall of the drying inner barrel 2, the spiral heating sheet 20 and the spiral drying cavity 4 are adjacently arranged along the axial direction, and a second spiral feeding channel formed by the spiral heating sheet 20 is continuous with the first spiral feeding channel; the drying inner cylinder 2 is also fixedly provided with a material lifting device 30, the material lifting device 30 is positioned in the first spiral feeding channel and/or the second spiral feeding channel, and specifically, the material lifting device 30 is fixed on the inner wall of the drying inner cylinder 2 or the side wall of the spiral drying cavity 4 or the spiral heating sheet 4.

When the drying equipment works, materials to be dried enter the drying inner barrel 2 from a feeding end, the drying inner barrel 2, the spiral drying cavity 4 and the spiral heating sheet 20 rotate together, the materials automatically move to a discharging end through a first spiral feeding channel surrounded by the spiral drying cavity 4 and a second spiral feeding channel surrounded by the spiral heating sheet 4 along with the rotation of the drying inner barrel 2, when the materials reach the position of the material lifting device 30 in the moving process of the first spiral feeding channel and the second spiral feeding channel, the material lifting device 30 wraps the materials, the materials are thrown from the material lifting device 30 after the material lifting device 30 rotates to a certain height along with the drying inner barrel 2, the scattering effect on the materials is achieved, the materials can not move only along the first spiral feeding channel and the second spiral feeding channel any more, and the materials are prevented from being deposited at the bottom of the spiral feeding channel, the material can be in direct contact with heat, the drying efficiency is improved, and the drying effect is improved.

In addition, for the drying inner barrel 2 provided with the spiral drying cavity 4, in the process that the material moves in the drying inner barrel 2, the heating gas in the drying outer barrel 3 is introduced into the spiral drying cavity 4 in the drying inner barrel 2, a spiral gas channel is formed inside the spiral drying cavity 4, because the spiral drying cavity 4 is isolated from the inside of the drying inner barrel 2, the cavity wall of the spiral drying cavity 4 is used for transferring heat with the material in the drying inner barrel 2, the spiral drying cavity 4 not only plays a role in conveying the material, but also fully utilizes the space in the drying inner barrel 2, radial and axial heat convection, heat conduction and heat radiation channels between the drying inner barrel 2 and the drying outer barrel 3 are provided, and the heat transfer area is greatly increased. For the drying inner cylinder 2 provided with the spiral heating sheet 20, the heat of the heating gas in the drying outer cylinder 3 is transferred to the inner wall of the drying inner cylinder 2 and then transferred to the spiral heating sheet 20, the spiral heating sheet 20 is in contact with the material for heat transfer, and the spiral heating sheet 20 also improves the heat transfer area in the drying inner cylinder 2. The materials are heated and dried in the drying inner cylinder 2, and gas generated by drying the materials can be discharged from the feeding end and/or the discharging end.

As shown in fig. 3, in the present embodiment, the material lifting device 30 includes a fixing base 301 and a material lifting portion 302, the fixing base 301 is fixed to the inner wall of the drying inner cylinder 2 or the side wall of the spiral drying cavity 4 or the spiral heating plate 20, and the material lifting portion 302 is fixed to the fixing base 301.

Specifically, the material lifting part 302 is a plate-shaped structure or a fence-shaped structure, the plate-shaped structure is a whole plate, and the material needs to be turned over the whole plate and thrown down; the fence-shaped structure is similar to the rake-shaped structure and is formed by a plurality of parallel-arranged long strip-shaped plates with certain intervals, the materials pass through gaps between the fence-shaped structures to play a role in dispersion, and meanwhile, the long strip-shaped plates can turn and throw the materials, so that the materials are scattered effectively. Of course, the material lifting portion 302 may have other structures as long as the material can rapidly pass through and be lifted.

In this embodiment, the height of the material lifting device 30 is less than or equal to the height of the first spiral feeding channel and the second spiral feeding channel. So set up, can make the material by the back of raising material device 30, can mostly fall back in first spiral feeding passageway and the second spiral feeding passageway, guarantee the conveying speed of material.

Further, in the present embodiment, the material lifting device 30 is detachably mounted on the inner wall of the drying inner drum 2. The convenient maintenance of lifting device 30 is changed, and can be in same drying equipment, the lifting device of different forms is replaced to different material properties.

In this embodiment, the angle between the plate surface of the material lifting device 30 and the side wall of the spiral drying cavity 4 or the spiral heating plate 20 may be a right angle, or may be other suitable angles, as long as the material can rapidly pass through and be lifted.

As shown in fig. 4, only the spiral drying cavity 4 may be disposed in the drying inner cylinder 2; or, only the spiral heating sheet 20 can be arranged in the drying inner cylinder 2; alternatively, as shown in fig. 5, the spiral drying cavity 4 and the spiral heating plate 20 may be disposed in the drying inner cylinder 2 at the same time. In the present embodiment, in the drying inner drum 2, the arrangement position and arrangement ratio of the spiral drying cavity 4 and the spiral heating plate 20 are set according to the drying requirement, and are not particularly limited. The spiral drying cavity 4 is arranged at the front section part in the drying inner barrel 2, and the spiral heating plate 20 is arranged at the rear section part in the drying inner barrel 2. The spiral drying cavity 4 is arranged at the rear section part of the drying inner barrel 2, and the spiral heating plate 20 is arranged at the front section part of the drying inner barrel 2. The spiral heating plate 20 is arranged at the middle section part of the drying inner cylinder 2, and the spiral heating plate 20 is arranged at the front section part and the rear section part of the drying inner cylinder 2. Of course, other arrangements are possible and are not limited to the illustrated form of the present embodiment. In this embodiment, two side walls of the spiral drying cavity 4 are two single-piece spirals, respectively, and the spiral heating plate 20 is one single-piece spiral, and preferably, one of the side walls of the spiral drying cavity 4 and the spiral heating plate 20 share one single-piece spiral, so that the structure is simpler, and the processing and manufacturing are convenient. Of course, different single-piece spirals can be used for the two side walls of the spiral drying chamber 4 and the spiral heating plate 20.

In this embodiment, the spiral drying cavity 4 is located and fixed on the inner cylinder wall of the drying inner cylinder 2, a cavity wall on one side of the spiral drying cavity 4 for locating may be an independent cavity wall or may be common to the inner wall of the drying inner cylinder 2, one or more vent holes 41 are formed on the cylinder wall where the spiral drying cavity 4 and the drying inner cylinder 2 are attached or common, the plurality of vent holes 41 are arranged along the spiral direction, and the spiral drying cavity 4 and the drying outer cylinder 2 are in gas communication through the vent holes 41. If a vent hole 41 is arranged, the heated air with certain pressure in the drying outer cylinder 3 enters the spiral drying cavity 4 through the vent hole 41, in order to make the heated air fill the spiral drying cavity 4, a vent hole 41 is arranged at one end of the spiral drying cavity 4, the heated air gradually fills the whole cavity from one end of the spiral drying cavity 4, the vent hole 41 is preferably arranged at one end of the spiral drying cavity 4 close to the discharge end, so that the flow direction of the heated air is opposite to the material moving direction, and the heat transfer efficiency is further improved. If a plurality of vent holes 41 are provided, the plurality of vent holes 41 are arranged along the spiral direction of the spiral drying cavity 4, and preferably, the plurality of vent holes 41 are uniformly distributed to further improve the uniformity of gas heat transfer.

In this embodiment, the vent 41 enables the heated air in the drying outer cylinder 3 to enter the spiral drying cavity 4, and the solid or liquid material in the drying outer cylinder 3 is prevented or reduced as much as possible from entering the spiral drying cavity 4 through the vent 41, because the drying outer cylinder 3 is fixedly arranged, the solid or liquid material usually stays at the bottom of the drying outer cylinder 3 and is not easy to enter the vent 41, and the heated air can diffuse and convect to enter the spiral drying cavity 4 through the vent 41, thereby further ensuring that the heated air better flows through the spiral drying cavity 4 for heat transfer.

Of course, the shape, size and number of the vent holes 41 are not limited in this embodiment, the vent holes 41 may be any shape, such as circular, rectangular, oval, quincunx, etc., as long as it is favorable for the gas to pass through, the size of the vent holes 41 is determined according to the heating requirement, if the heating requirement is large, the larger vent holes 41 may be provided to ensure sufficient circulation of the heated gas, and conversely, the smaller vent holes 41 may be provided. The number of the vent holes 41 is also set according to the heating requirement, the more the number of the vent holes 41 is, the smoother the circulation of the heating gas in the spiral drying cavity 4 is, the faster the heating speed is, otherwise, the slower the heating speed is, but at the same time, the solid and liquid materials in the drying outer cylinder 3 are prevented from entering the spiral drying cavity 4 as much as possible.

Further, in this embodiment, the spiral drying cavity 4 is an annular spiral drying cavity, and a radial distance exists between an inner ring of the annular spiral drying cavity and the axis of the drying inner cylinder 2. So set up, the central part of annular spiral stoving cavity forms the axial hollow region who link up stoving inner tube 2, and the gas that the stoving produced in the stoving inner tube 2 can circulate through hollow region more smoothly, is favorable to the discharge of the gas that the stoving produced.

Of course, the spiral drying cavity 4 may not have a hollow area, so that the gas generated by drying in the drying inner cylinder 2 can also be spirally conveyed in the spiral feeding channel, but the path for conveying the gas is longer.

Preferably, in this embodiment, the difference between the outer ring diameter and the inner ring diameter of the annular spiral drying cavity is smaller than the radius of the drying inner cylinder, and the difference between the outer ring diameter and the inner ring diameter of the annular spiral drying cavity is determined according to the drying requirement and the gas emission requirement in the drying inner cylinder 2.

As an optimization, in this embodiment, the width between the two side walls of the spiral drying cavity 4 is greater than 1cm, and the size of the width determines the size of the gas channel inside the spiral drying cavity 4, thereby determining the size of the heating amount and the size of the heat dissipation area, and ensuring the convection and turbulence of the hot gas flow.

In this embodiment, the screw pitch of the spiral drying cavity 4 is equal screw pitch or variable screw pitch, and the screw pitch is greater than 1 cm. And determining the screw pitch form and the size of the screw pitch according to the drying temperature requirements of different axial sections in the drying inner cylinder 2.

Similarly, in the present embodiment, the spiral heating plate 20 is an annular spiral heating plate, and a radial distance exists between an inner ring of the annular spiral heating plate and the axis of the drying inner cylinder 2. So set up, the central part of annular spiral heating plate forms the axial hollow region who link up stoving inner tube 2, and the gas that the stoving produced in the stoving inner tube 2 can circulate through hollow region more smoothly, is favorable to the discharge of the gas that the stoving produced.

Of course, the spiral heating plate 20 may not have a hollow area, and the gas generated by drying in the drying inner cylinder 2 can also be conveyed in the first spiral conveying channel and the second spiral conveying channel by spiral conveying, but the path of the gas conveying is longer.

The screw pitch of the spiral heating sheet 20 and the screw pitch of the single-side cylinder wall of the spiral drying cavity 4 can be the same or different, and the difference between the outer ring diameter and the inner ring diameter of the annular spiral heating sheet can be equal to or different from the difference between the outer ring diameter and the inner ring diameter of the annular spiral drying cavity according to actual needs.

In this embodiment, the spiral drying cavity 4 is a continuous spiral cavity or a plurality of discontinuous spiral cavities. When the spiral drying cavity 4 is a continuous spiral cavity, the axial length of the continuous spiral cavity is the maximum length, and the internal airflow channels of the continuous spiral cavity are continuously communicated. When the spiral drying cavity 4 is a plurality of discontinuous spiral cavities, the discontinuous spiral cavities are sequentially arranged along the axial direction of the drying inner cylinder 2, each discontinuous spiral cavity is independently communicated with the drying outer cylinder 3, and the cavity walls of the discontinuous spiral cavities are combined to form a continuous first spiral feeding channel.

Similarly, the spiral heating plate 20 is a continuous spiral heating plate or a plurality of discontinuous spiral heating plates. When the spiral heating chip 20 is a continuous spiral heating chip, the axial length of the continuous spiral heating chip is the maximum length. When the spiral heating plate 20 is a plurality of intermittent spiral heating plates 20, the plurality of intermittent spiral heating plates 20 are sequentially arranged along the axial direction of the drying inner cylinder 2. Of course, the plurality of intermittent spiral heating sheets and the plurality of intermittent spiral drying cavities can be arranged and combined at will. As long as the first spiral feeding channel and the second spiral feeding channel are continuous.

In the embodiment, the feeding end of the drying inner cylinder 2 is in sealed rotary connection with a fixedly arranged feeding cover 1, the feeding cover 1 is provided with a feeding hole 11, and the feeding hole 11 is preferably arranged at the end part of the feeding cover 1; the discharging end of the drying inner cylinder 2 is in sealed rotary connection with a fixedly arranged discharging cover 6, and the discharging cover 6 is provided with a discharging hole 61; the feeding cover and/or the discharging cover are/is also provided with a gas through hole. That is, only the feed hood 1 is provided with the first gas through hole, or only the discharge hood 1 is provided with the second gas through hole 62, or the feed hood 1 is provided with the first gas through hole, and at the same time, the discharge hood is provided with the second gas through hole 62. Preferably, the first gas through hole on the feeding cover 1 is arranged at the upper part of the feeding cover 1, the second gas through hole 62 on the discharging cover 6 is arranged at the end part of the discharging cover 6, and the discharging hole 61 is arranged at the lower part of the discharging cover 6. The feeding cover 1, ejection of compact cover 6 and the 3 rotations of stoving urceolus that stoving inner tube 2 relatively fixed set up, the material gets into rotatory stoving inner tube 2 through feed inlet 11 on the feeding cover 1, and the material after the stoving is discharged through discharge gate 61 on the ejection of compact cover 6, and simultaneously, the gas that the stoving produced is discharged from the gas through hole on feeding cover 1 and/or ejection of compact cover 6.

The gas through hole can discharge gas generated by drying, can also be used as an inlet of heated gas, and the heated gas is directly introduced into the drying inner barrel 2 and is directly contacted with materials for drying. The heated air can enter the drying inner cylinder 2 through the first air through hole and/or the second air through hole 62 to participate in direct drying. The drying device can independently adopt the drying outer cylinder 3, the spiral drying cavity 4 and the spiral heating sheet 20 to dry the materials, can also independently adopt the heating gas in the drying inner cylinder 2 to directly contact and dry, or can simultaneously dry the materials.

As shown in fig. 4 to 6, in the present embodiment, the inner wall of the drying tub 3 is provided with the air flow guide 5, and the air flow guide 5 extends spirally in the direction from the heating air inlet 31 to the heating air outlet 32. The heated air introduced into the drying outer cylinder 3 is guided to the whole inner space through the airflow guide plate 5, the path and the retention time of the heated air in the drying outer cylinder 3 are prolonged, the heating uniformity is improved, and the heat of the heated air is fully utilized.

As shown in fig. 2, in the present embodiment, the outer wall of the drying inner drum 2 is provided with heating fins 9, and the heating fins 9 are preferably uniformly arranged along the circumference of the outer wall of the drying inner drum 2 and are uniformly arranged along the axial direction. The heat transfer area between the heating gas in the drying outer cylinder 3 and the outer wall of the drying inner cylinder 2 is increased by arranging the heating fins 9, so that the heating of the heating gas on the cylinder wall of the drying inner cylinder 2 and the spiral heating sheet 20 is accelerated, and the drying speed of the cylinder wall of the drying inner cylinder 2 on materials is further improved.

In the embodiment, the drying inner cylinder 2 is driven to rotate by the driving device 8, the driving device 8 comprises a gear ring 81, a transmission gear 82 and a power component, the gear ring 81 is arranged on the outer cylinder wall of the drying inner cylinder 2, the gear ring 81 and the drying inner cylinder 2 rotate together, and the transmission gear 82 is meshed with the gear ring 81; the power component is in transmission connection with the transmission gear 82 and drives the transmission gear 82 to rotate, so as to drive the drying inner barrel 2 to rotate. The power component is preferably an electric motor or comprises an electric motor and a speed reducer. Of course, the driving device 8 may have other configurations, and is not limited to the illustrated embodiment.

In this embodiment, the drying inner cylinder 2 is supported by the rotation supporting device 7, the rotation supporting device 7 includes a supporting ring 71 and supporting wheels 72, the supporting ring 71 is fixed on the outer cylinder wall of the drying inner cylinder 2, preferably, is arranged on the periphery of two ends of the drying inner cylinder 2, and the supporting ring 71 is rotatably supported by the supporting wheels 72 below.

As shown in fig. 6, based on the drying equipment with the material lifting function described in any of the above embodiments, the embodiment of the present invention further provides a cracking system, which includes a drying equipment and a cracking furnace, wherein the discharging end of the drying equipment is communicated with the feeding device 101 of the cracking furnace, and the drying equipment is the drying equipment with the material lifting function described in any of the above embodiments.

During operation, the material is dried through drying equipment earlier, and later, the material after the stoving is discharged from discharge gate 61 back, gets into the feed arrangement 101 of pyrolysis furnace, sends into the material through feed arrangement 101 and participates in the pyrolysis reaction in the pyrolysis furnace, and the solid material after the reaction passes through discharge arrangement discharge cracking furnace, and the cracked gas that the schizolysis produced is discharged through cracked gas discharge port 105. Owing to adopt the drying equipment in this application, consequently drying efficiency is high, has improved the holistic work efficiency of schizolysis system, and the material obtains better stoving, is favorable to the pyrolysis reaction in the pyrolysis furnace, has improved the schizolysis effect.

Further, in this embodiment, optimize the pyrolysis furnace, the pyrolysis furnace includes pyrolysis cylinder 104 and combustion cylinder 103, the both ends of combustion cylinder 103 rotate with the section of thick bamboo wall of pyrolysis cylinder 104 respectively and seal, the combustion cylinder 103 that pyrolysis cylinder 104 relatively fixed set up is rotatory, the heat that the burning produced in the combustion cylinder 103 is used for heating the material in the pyrolysis cylinder 104, the tail gas exhaust port 102 of combustion cylinder 103 communicates with the heating gas import 31 of drying equipment or first gas through-hole or second gas through-hole. An air supply opening 105, an ignition opening and a fuel supply opening are formed in the wall of the combustion cylinder 103 and are used for combusting fuel in the combustion cylinder 103. Because the waste gas generated by combustion in the combustion cylinder 103 is high-temperature waste gas, the high-temperature waste gas is introduced into the drying outer cylinder 3 or the drying inner cylinder 2 to be used as heating gas, thereby fully utilizing the waste heat of the cracking system, improving the heat utilization rate and saving the energy consumption.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A drying device with a material lifting function is characterized by comprising a drying inner cylinder and a drying outer cylinder;

the two ends of the drying outer cylinder (3) are hermetically sleeved on the periphery of the drying inner cylinder (2), the drying inner cylinder (2) rotates relative to the drying outer cylinder (3) which is fixedly arranged, and heating gas is introduced into the drying outer cylinder (3);

a spiral drying cavity (4) and/or a spiral heating sheet (20) are fixedly arranged in the drying inner barrel (2), the interior of the spiral drying cavity (4) is isolated from the interior of the drying inner barrel (2), the spiral drying cavity (4) is communicated with the drying outer barrel (3) and is used for introducing heating gas of the drying outer barrel (3) into the spiral drying cavity (4), a first spiral feeding channel is defined by the side wall of the spiral drying cavity (4) and the inner wall of the drying inner barrel (2), and the cavity wall of the spiral drying cavity (4) is used for heat transfer with materials in the drying inner barrel (2); the spiral heating sheets (20) and the spiral drying cavity (4) are arranged adjacently along the axial direction, and a second spiral feeding channel formed by the spiral heating sheets (20) is continuous with the first spiral feeding channel;

the drying inner cylinder (2) is also internally and fixedly provided with a material lifting device (30), and the material lifting device (30) is positioned in the first spiral feeding channel and/or the second spiral feeding channel.

2. The drying apparatus according to claim 1, wherein the material lifting device (30) comprises a fixed seat (301) and a material lifting portion (302), the fixed seat (301) is fixed on the inner wall of the drying inner cylinder (2) or the side wall of the spiral drying cavity (4) or the spiral heating sheet (20), and the material lifting portion (302) is fixed on the fixed seat (301).

3. Drying apparatus according to claim 2, characterised in that the lifter (302) is a plate-like structure or a fence-like structure.

4. Drying apparatus according to claim 1, characterised in that the height of the lifter (30) is smaller than or equal to the height of the first and second screw feeder channel.

5. Drying apparatus according to claim 1, characterised in that the lifter (30) is detachably mounted in the drying inner drum (2).

6. Drying apparatus according to claim 1, wherein the spiral drying chamber (4) is an annular spiral drying chamber, the inner ring of which is radially spaced from the axis of the drying inner drum (2).

7. The drying apparatus of claim 1, wherein the spiral heating fin is an annular spiral heating fin, and a radial distance exists between an inner ring of the annular spiral heating fin and an axis of the drying inner cylinder.

8. The drying apparatus according to claim 1, characterized in that the feeding end of the drying inner drum (2) is connected with a fixedly arranged feeding cover (1) in a sealing and rotating way, and the feeding cover (1) is provided with a feeding hole (11); the discharging end of the drying inner cylinder (2) is in sealed rotary connection with a fixedly arranged discharging cover (6), and the discharging cover (6) is provided with a discharging hole (61); the feeding cover (1) and/or the discharging cover (6) are/is also provided with gas through holes.

9. Drying apparatus according to claim 1, characterised in that the outer wall of the drying drum (2) is provided with heating fins (9).

10. A cracking system comprising a drying apparatus and a cracking furnace, the discharge end of the drying apparatus being in communication with a feeding device (101) of the cracking furnace, characterized in that the drying apparatus is a drying apparatus according to any one of claims 1-9.

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