Spiral conveying online self-cleaning device and pyrolysis system

Abstract

The utility model relates to the technical field of pyrolysis, and discloses a spiral conveying online self-cleaning device and a pyrolysis system. According to the spiral conveying online self-cleaning device, a spiral conveyor is provided with a pyrolysis product feeding port, an abrasive feeding port and a discharging port; the spiral conveyor is used for cleaning the abrasive rubbing parts during abrasive conveying; and the feeding equipment is connected with the abrasive material inlet and is used for feeding abrasive materials into the spiral conveyor. According to the pyrolysis system, a discharging port of a pyrolysis reactor is connected with a pyrolysis product feeding port of a spiral conveyor. According to the spiral conveying online self-cleaning device, online cleaning can be achieved, self-cleaning can be achieved, and the spiral conveying online self-cleaning device is effective; the problems of oil vapor condensation and carbon soil bonding are thoroughly solved; the labor intensity of manual maintenance is greatly reduced, and the reliability and the continuous operation capacity of the device are improved. According to the pyrolysis system disclosed by the utility model, the spiral conveying online self-cleaning device is used for conveying pyrolysis materials, and the pyrolysis system also has the above beneficial effects.

Description

TECHNICAL FIELD

[0001] The utility model relates to pyrolysis technical field, concretely relates to a spiral conveying on -line self -cleaning device and pyrolysis system. BACKGROUND

[0002] Pyrolysis is the process of organic solid waste under the condition of no oxygen or oxygen deficiency heating decomposition. The process is a complex chemical reaction process, including macromolecular bond rupture, isomerization and small molecule polymerization reaction, finally generates various smaller molecules. Pyrolysis technology is widely used in the treatment, disposal of biomass, oil sludge, industrial waste and hazardous waste fields.

[0003] Applicant in the engineering practice of oil sludge pyrolysis, in the pyrolysis reactor discharge cooling link, oil vapor carried in pyrolysis material will occur oil gas condensation or with carbon soil mixing condition, further will adhere to the discharge screw inner wall, shaft, blade;With the running time elapses, causes the conveying resistance to increase, the conveying capacity to decline, until normal operation can not be carried out;Therefore, the screw must be disassembled and cleaned.

[0004] Therefore, through continuous attempts and exploration, an effective spiral conveying on-line self-cleaning device and a pyrolysis system comprising the device are developed. UTILITY MODEL CONTENT

[0005] The utility model provides a spiral conveying on-line self-cleaning device and pyrolysis system to solve the above-mentioned technical problem of the prior art that oil vapor condensation or mixing with carbon soil adheres to the components and affects the conveying capacity.

[0006] According to the first aspect of the utility model, a spiral conveying on-line self-cleaning device is provided, comprising:

[0007] The screw conveyor has a pyrolysis product feed inlet, an abrasive feed inlet and a discharge outlet. The screw conveyor is used for abrasive conveying, and the abrasive friction components are cleaned.

[0008] The feeding device is connected to the abrasive feed inlet and is used to feed abrasive into the screw conveyor.

[0009] Preferably, the abrasive is conveyed together with the pyrolysis product when the screw conveyor conveys the pyrolysis product.

[0010] Preferably, the abrasive is a steel ball.

[0011] Preferably, the discharge outlet of the screw conveyor is connected to a gas lock, and the gas lock has a gas inlet. The gas lock is used to convey gas into the screw conveyor to accelerate the flow of oil gas. And / or

[0012] The spiral conveyor body of the spiral conveyor is externally provided with a water-cooling jacket, and a circulating water inlet and a circulating water outlet are formed in the water-cooling jacket.

[0013] Preferably, the spiral conveyor is externally provided with a vibration device for hammering the spiral conveyor to generate vibration and strengthen the strength of the abrasive friction cleaning parts.

[0014] Preferably, the feeding device is a spiral feeder, which comprises:

[0015] a spiral feeder body; and

[0016] a receiving hopper connected to a feeding port of the spiral feeder body;

[0017] wherein a discharging port of the spiral feeder body is connected to an abrasive feeding port of the spiral conveyor.

[0018] Preferably, the spiral conveying online self-cleaning device comprises:

[0019] a vibrating screen connected to the discharging port of the spiral conveyor, the vibrating screen being used for screening out the abrasive.

[0020] Preferably, the spiral conveying online self-cleaning device comprises:

[0021] an elevator connected to the vibrating screen, the elevator being used for conveying the screened abrasive to the feeding device for recycling.

[0022] Preferably, the spiral conveyor is obliquely arranged, the pyrolysis product feeding port is arranged at a low end, and the discharging port is arranged at a high end; the feeding device is located above the pyrolysis product feeding port, and the vibrating screen is located below the discharging port of the spiral conveyor.

[0023] According to a second aspect of the present application, a pyrolysis system is provided, which comprises:

[0024] the spiral conveying online self-cleaning device according to any one of the preceding items; and

[0025] a pyrolysis reactor;

[0026] wherein a discharging port of the pyrolysis reactor is connected to a pyrolysis product feeding port of the spiral conveyor.

[0027] The spiral conveying online self-cleaning device can be cleaned online, realizes self-cleaning, and is effective.

[0028] The pyrolysis system has the above beneficial effects of the spiral conveying online self-cleaning device. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 Figure 1 is a structural schematic diagram of a spiral conveying online self-cleaning device in an embodiment;

[0030] Figure 2 Figure 2 is another structural schematic diagram of a spiral conveying online self-cleaning device in an embodiment;

[0031] Figure 3 Figure 3 is a structural schematic diagram of a pyrolysis system in an embodiment;

[0032] Figure 4 、 Figure 5 Figure 4 is a structural schematic diagram of an air lock (star-shaped discharge valve) in an embodiment;

[0033] REFERENCE SIGNS

[0034] 1 - feeding device; 11 - spiral feeder body; 12 - receiving hopper; 13 - steel ball; 2 - spiral conveyor; 21 - air hammer; 22 - spiral conveyor body; 23 - air lock; 221 - water-cooled jacket; 222 - first inner cylinder; 223 - hollow shaft; 3 - vibrating screen; 4 - elevator; 5 - pyrolysis reactor. DETAILED DESCRIPTION

[0035] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0036] In order for those skilled in the art to better understand the present application, the technical solutions in an embodiment will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0037] It should be noted that the terms "first", "second", and the like in the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or equipment including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or equipment.

[0038] It should be understood that when an element (such as a layer, film, region, or substrate) is described as being "on" another element, it can be directly on the other element, or there can be an intermediate element. Also, in the present application, when an element is described as being "connected" to another element, it can be "directly connected" to the other element, or "connected" to the other element through a third element.

[0039] Embodiment one

[0040] Please refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 The embodiment provides a spiral conveying online self-cleaning device, which comprises a spiral conveyor 2 and a feeding device 1; wherein the spiral conveyor 2 has a pyrolysis product feeding port, an abrasive feeding port and a discharging port; the spiral conveyor 2 is used for abrasive conveying, and abrasive friction parts are used for cleaning; preferably, the pyrolysis product feeding port and the abrasive feeding port are arranged at a first end, and the discharging port is arranged at a second end. Generally, the spiral conveyor 2 is arranged to be inclined when working, and the material is conveyed to a high place, at this time, the first end of the spiral conveyor 2 is lower than the second end. The feeding device 1 is connected to the abrasive feeding port and is used for feeding the abrasive into the spiral conveyor 2.

[0041] In an embodiment, the oil sludge is pyrolyzed by using a pyrolysis system, and the product is pyrolysis carbon soil. The spiral conveying online self-cleaning device can be applied to the pyrolysis system (see the embodiment below) and is used for conveying the pyrolysis carbon soil or achieving the discharging of the pyrolysis carbon soil.

[0042] In an embodiment, the spiral conveyor 2 comprises a spiral conveyor body 22. The spiral conveyor body 22 comprises a first inner cylinder 222 and a first spiral auger arranged in the first inner cylinder 222, wherein one end of the first spiral auger extends out of the end of the first inner cylinder 222 and is connected to a first driving motor. Wherein the first spiral auger has a shaft and a spiral blade. The first driving motor can drive the first spiral auger to rotate and work, and the first spiral auger can convey the pyrolysis product and the abrasive from the first end to the second end of the spiral conveyor 2 during rotation; generally, the lifting operation of the material is completed.

[0043] In one embodiment, the abrasives are delivered along with the pyrolysis products by the screw conveyor 2. There can be a scheme in which the abrasives are delivered along with the pyrolysis products continuously, so that the abrasives contact and rub the inner cylinder wall, shaft and blade for effective cleaning for a long period of time, realizing the online self-cleaning of the screw conveyor 2, i.e. continuous self-cleaning. There can also be a scheme in which the abrasives are delivered to the screw conveyor 2 every certain time interval, i.e. every cycle, and the abrasives contact and rub the inner cylinder wall, shaft and blade for effective cleaning, realizing the online self-cleaning of the screw conveyor 2, i.e. periodic self-cleaning.

[0044] In one embodiment, the abrasives are provided in the form of balls, blocks or even larger particles, all of which can realize the cleaning effect of rubbing the parts. Among them, the spherical abrasives have better rolling property and are also convenient for delivery, screening, etc. Preferably, the abrasives are provided in the form of steel balls 13. The steel balls 13 (preferably, 25-50 mm in diameter and made of manganese steel) are put into the screw conveyor 2 and delivered along with the pyrolysis carbon soil (pyrolysis products), so that the abrasion of the steel balls can be used to clean the inner cylinder wall, shaft and blade of the screw conveyor 2 effectively.

[0045] In one embodiment, the discharge port of the screw conveyor 2 is connected with an air lock 23, and the air lock 23 is provided with an air inlet. The air lock 23 is used to deliver gas (preferably nitrogen) into the screw conveyor 2 to accelerate the flow of oil and gas. In detail, the air lock 23 is used to isolate air; nitrogen is introduced into the shaft seal and the inside of the screw conveyor 2 through the air inlet; the introduction of nitrogen helps to carry the oil vapor to flow into the screw conveyor 2, reducing the condensation in the screw conveyor 2.

[0046] In one embodiment, the discharge port of the screw conveyor 2 is connected with an air lock 23, and the air lock 23 is provided with an air inlet. The air lock 23 is used to deliver gas (preferably nitrogen) into the screw conveyor 2 to accelerate the flow of oil and gas. In detail, the air lock 23 is used to isolate air; nitrogen is introduced into the shaft seal and the inside of the screw conveyor 2 through the air inlet; the introduction of nitrogen helps to carry the oil vapor to flow into the screw conveyor 2, reducing the condensation in the screw conveyor 2. Figure 4 、 Figure 5The main structure is that the rotor is arranged in the pouring shell, and relatively dense impellers are arranged on the rotor, and the number of the impellers is generally 4-6, and preferably 4; the working principle is that the rotating impellers play a role of conveying materials and also bear a sealing role to prevent air from being sucked in from the discharge port in the conveying process. Technical effects of the air lock 23 / star type discharge valve: in the pyrolysis process, pyrolysis gas (oil vapor, water vapor, and non-condensable gas) diffuses in the entire closed pyrolysis system; the discharge port will also have pyrolysis gas, and the screw conveyor 2 used for discharging is often provided with a cooling function, and the oil vapor and water vapor will condense due to entering the low-temperature environment of the screw conveyor 2 and be bonded to the inner cylinder wall and the blades, causing the problem of blockage; nitrogen gas is introduced into the air lock 23, which can carry the oil vapor and water vapor to move in the direction of the gas outlet of the pyrolysis reactor (see the embodiment below) - (pyrolysis reactor), and once the oil vapor and water vapor enter the pyrolysis reactor, there is no risk of condensation due to the high temperature in the pyrolysis reactor.

[0047] In an embodiment, since the screw conveyor 2 and the pyrolysis reactor 5 (see the embodiment below) are connected, the pyrolysis reactor 5 has a relatively high temperature. The following cooling design is provided: the water cooling jacket 221 is arranged outside the screw conveyor body 22 of the screw conveyor 2, and the water cooling jacket 221 is provided with a circulating water inlet and a circulating water outlet. Cooling water is introduced into the water cooling jacket 221 to circulate, so as to reduce the temperature of the screw conveyor 2. In order to improve the cooling effect, the shaft of the first spiral auger is a hollow shaft 223, the first end is provided with the circulating water inlet, and the second end is provided with the circulating water outlet; cooling water is introduced into the hollow shaft 223 to circulate, so as to further reduce the temperature of the screw conveyor 2, and the working temperature can reach 20-30°C. At this time, the screw conveyor 2 with the water cooling jacket 221 and the hollow shaft 223 can also be referred to as a water cooling jacket (cooling) screw conveyor 2.

[0048] In an embodiment, a vibration device is arranged outside the screw conveyor 2, and the vibration device is used for hammering the screw conveyor 2 to generate vibration and strengthen the strength of abrasive friction cleaning of parts. The vibration form can be mechanical form or pneumatic form. Preferably, the vibration device is an air hammer 21 (also referred to as a pneumatic knocking hammer). It can be configured to hammer once every 10 seconds, and vibration strengthens the cleaning effect of the steel ball 13 on the inside of the screw conveyor 2.

[0049] In one embodiment, the feeding device 1 is a screw feeder, which comprises a screw feeder body 11 and a receiving hopper 12; the receiving hopper 12 is connected to the feeding port of the screw feeder body 11; the discharging port of the screw feeder body 11 is connected to the abrasive feeding port of the screw conveyor 2. As to the screw feeder body 11, a structure is provided, which comprises a second inner cylinder and a second screw auger arranged in the second inner cylinder, wherein one end of the second screw auger extends out of the end of the second inner cylinder and is connected to a second driving motor. Generally, a large amount of abrasive is temporarily stored in the receiving hopper 12, and the second screw auger can continuously feed the abrasive to the screw conveyor 2 during operation, so that the abrasive is fed into the abrasive feeding port to realize feeding.

[0050] In one embodiment, the screw conveying online self-cleaning device comprises a vibrating screen 3; the vibrating screen 3 is connected to the discharging port of the screw conveyor 2; the vibrating screen 3 is used for screening the abrasive. Preferably, the vibrating screen 3 is connected to the discharging port of the airlock 23. The airlock 23 discharges into the vibrating screen 3 to separate the pyrolysis carbon soil and the steel balls 13.

[0051] In one embodiment, the screw conveying online self-cleaning device comprises an elevator 4; the elevator 4 is connected to the vibrating screen 3; the elevator 4 is used for conveying the screened abrasive to the feeding device 1 for recycling. The steel balls 13 are oversize materials, and the pyrolysis carbon soil is undersize material. That is, the elevator 4 receives the steel balls 13 and lifts and conveys the steel balls 13 back to the receiving hopper 12 of the feeding device 1 (i.e., the steel ball feeding screw conveyor and the screw feeder), so as to realize recycling of the steel balls 13.

[0052] In one embodiment, the screw conveyor 2 is arranged obliquely, the pyrolysis product feeding port is arranged at the low end, and the discharging port is arranged at the high end; the feeding device 1 is located above the pyrolysis product feeding port, the vibrating screen 3 is located below the discharging port of the screw conveyor 2, and the elevator 4 is located at one side of the vibrating screen 3.

[0053] The screw conveying online self-cleaning device can realize online cleaning and self-cleaning, which is effective. The screw conveying online self-cleaning device completely solves the problems of oil vapor condensation and carbon soil adhesion to the screw blade, greatly reduces the labor intensity of manual maintenance, and improves the reliability and continuous operation capacity of the device.

[0054] Embodiment two

[0055] Please refer to Figures 1-5 The embodiment provides a pyrolysis system, which comprises a pyrolysis reactor 5 and the screw conveying online self-cleaning device according to any one of the embodiments one; the discharging port of the pyrolysis reactor 5 is connected to the pyrolysis product feeding port of the screw conveyor 2. Preferably, the pyrolysis reactor 5 is located above the pyrolysis product feeding port, so as to facilitate feeding of the pyrolysis product into the screw conveyor 2 through the pyrolysis product feeding port.

[0056] The above merely is preferred embodiment of the present utility model, and is not used to limit the present utility model, for the person skilled in the art, the present utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the present utility model should be contained in the protection scope of the present utility model.

Claims

1. A screw conveyor online self-cleaning device, characterized in that, The screw conveyor is used for conveying the pyrolysis products and the abrasives. The feeding device is connected to the abrasive feeding port of the screw conveyor and is used for feeding the abrasives into the screw conveyor. The abrasives are conveyed together with the pyrolysis products when the pyrolysis products are conveyed by the screw conveyor. The abrasives are steel balls.

2. The spiral conveyor online self-cleaning device according to claim 1, characterized in that, The gas lock is connected to the discharge port of the screw conveyor and is provided with a gas inlet.

3. The spiral conveyor online self-cleaning device according to claim 1, wherein, The water cooling jacket is provided outside the screw conveyor body of the screw conveyor and is provided with a circulating water inlet and a circulating water outlet.

4. The spiral conveyor online self-cleaning device according to claim 1, wherein, The vibration device is used for hammering the screw conveyor to generate vibration and to strengthen the strength of the abrasives. The feeding device is a screw feeder which comprises:

5. The spiral conveyor online self-cleaning device according to claim 1, wherein, The screw feeder body and 6. The spiral conveyor online self-cleaning device of claim 1, wherein, The receiving hopper which is connected to the feeding port of the screw feeder body. The discharge port of the screw feeder body is connected to the abrasive feeding port of the screw conveyor. The screw conveying online self-cleaning device comprises: The vibrating screen which is connected to the discharge port of the screw conveyor and is used for screening the abrasives.

7. The spiral conveyor online self-cleaning device according to any one of claims 1-6, characterized in that, The screw conveying online self-cleaning device comprises: The elevator which is connected to the vibrating screen and is used for conveying the screened abrasives to the feeding device for recycling.

8. The spiral conveyor online self-cleaning device according to claim 7, characterized in that, The screw conveyor is inclined and the pyrolysis product feeding port is arranged at the low end and the discharge port is arranged at the high end. The screw conveying online self-cleaning device according to any one of claims 1-9 and 9. The spiral conveyor online self-cleaning device according to claim 7, wherein, The pyrolysis reactor.

10. A pyrolysis system characterized by, The discharge port of the pyrolysis reactor is connected to the pyrolysis product feeding port of the screw conveyor. ​ ​ ​ ​

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