CN219342069U

CN219342069U - Automatic slag removing device for intermittent pyrolysis furnace

Info

Publication number: CN219342069U
Application number: CN202223433979.0U
Authority: CN
Inventors: 郭海峰; 高漫春; 曾辉; 徐彬; 朱化军
Original assignee: Jiangsu Baihuan Environmental Technology Co ltd
Current assignee: Jiangsu Baihuan Environmental Technology Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-07-14
Anticipated expiration: 2032-12-21

Abstract

The utility model discloses an automatic slag removing device for an intermittent pyrolysis furnace, which comprises a slag removing pipe (2) connected with a discharge hole (1) of the pyrolysis furnace, wherein one end of the slag removing pipe is connected with a feeding screen plate (3), the other end of the slag removing pipe is connected with an explosion-proof motor (4), the output end of the explosion-proof motor (4) stretches into the slag removing pipe (2) and is connected with a shaftless spiral pusher (5), the lower surface of the shaftless spiral pusher (5) is contacted with the inner wall below the slag removing pipe (2), and a discharge pipe (6) and a discharge valve (7) are connected below the slag removing pipe (2); an air passage cavity (8) is arranged between the upper surface of the shaftless spiral pusher (5) and the inner wall above the slag removing pipe (2), an air passage expansion joint (9) is connected above the slag removing pipe (2), and the air passage expansion joint (9) is communicated with the air passage cavity (8). The utility model has the advantages of automatic slag discharge, effective blocking of residual high-temperature gas in the pyrolysis furnace from overflowing, and safe and reliable operation.

Description

Automatic slag removing device for intermittent pyrolysis furnace

Technical Field

The utility model relates to the technical field of equipment manufacturing, in particular to an automatic slag removing device for an intermittent pyrolysis furnace.

Background

The intermittent pyrolysis furnace is widely applied to cracking and recycling light oil of oil sludge, junked tires, waste plastics and the like, and long-chain hydrocarbon is cracked to generate micromolecular organic matters under the high-temperature and anaerobic conditions.

At present, after the intermittent pyrolysis furnace finishes primary material pyrolysis, when the temperature in the furnace is reduced to below 50 ℃, after the furnace door is opened, workers are required to enter the furnace to remove slag, the risk of scalding exists, and the operation is performed in a closed limited space, so that the risk is high; meanwhile, the furnace temperature needs to be reduced, and under the condition that the temperature in the furnace is lower than the external temperature, the internal pressure cannot be higher than the external pressure, so that air can enter the furnace under the action of the pressure to cause dust explosion. Chinese patent CN111573174a discloses a discharge device of pyrolysis furnace, which is mainly used for cooling the material during discharging, so as to facilitate the subsequent treatment of the material. However, the structure that the screw plate is additionally arranged on the rotating rod adopted by the discharging device only inputs the gas into the ventilation layer at the upper part of the first box body to cool, and finally the gas is discharged from the gas outlet. This discharge device has the following problems: firstly, the feeding materials cannot be screened, the particles fall into a first box body, and the rotating rod drives the spiral sheet to rotate so as to convey the materials backwards; second, gaseous direct entering ventilation layer cooling, because pyrolysis gas temperature is higher, can make pipeline inflation warp, produces certain adverse effect to the ventilation layer, and in the ventilation layer locates the box, in case damage hardly in time discovers, if the exhaust is untimely again this moment, easily leads to a large amount of gaseous accumulation in the box, forms to hold down the pressure.

Disclosure of Invention

The utility model aims to solve the problems of high risk and high risk of manual slag removal of the existing pyrolysis furnace, and provides an automatic slag removal device for an intermittent pyrolysis furnace, which can automatically remove slag, effectively prevent residual high-temperature gas in the pyrolysis furnace from overflowing and is safe and reliable to operate.

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

an automatic slag removing device for an intermittent pyrolysis furnace comprises a slag removing pipe connected with a discharge hole of the pyrolysis furnace, wherein one end of the slag removing pipe is connected with a feeding screen plate, and the feeding screen plate is arranged opposite to the discharge hole of the pyrolysis furnace and is used for screening large materials and small particles;

the other end of the slag removing pipe is connected with an explosion-proof motor, the output end of the explosion-proof motor extends into the slag removing pipe and is connected with a shaftless spiral pusher, the shaftless spiral pusher is arranged parallel to the axis of the slag removing pipe, the lower surface of the shaftless spiral pusher is contacted with the inner wall below the slag removing pipe, a discharging pipe is connected below the slag removing pipe, and a discharging valve is arranged on the discharging pipe and is used for discharging slag in a pipeline;

an air passage cavity is arranged between the upper surface of the shaftless spiral pusher and the inner wall above the slag removal pipe, and an air passage expansion joint is connected above the slag removal pipe and communicated with the air passage cavity for discharging pyrolysis gas.

Further, the slag removing pipe is connected with a discharge hole of the pyrolysis furnace through a discharge flange, and a movable sealing ring are sleeved at the connection part of the slag removing pipe and the discharge flange.

Further, the axes of the discharging pipe and the gas path expansion joint are perpendicular to the axis of the slag removing pipe.

Further, the discharge valve is a discharge sealing star valve.

Further, the shaftless spiral pusher is of an eccentric structure.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

(1) The shaftless spiral discharging is adopted, the hollow pyrolysis gas circulation channel is arranged at the upper part, and the discharging sealing star-shaped valve is arranged at the lower part, so that the residual gas in the pyrolysis furnace is effectively prevented from overflowing;

(2) After the material is cracked, the intermittent pyrolysis furnace reverses, a lifting plate in the intermittent pyrolysis furnace pushes residue particles to a discharge end, large materials are intercepted after being screened by a feeding screen plate, small particles fall into a shaftless spiral and are conveyed to a discharge sealing star valve, and a discharge system can screen large and small materials and remove slag in a targeted manner;

(3) When the slag is removed, the temperature in the furnace is higher than the external temperature, the internal pressure is slightly higher than the external pressure, and air cannot enter the furnace under the action of the pressure, so that the dust explosion risk can be eliminated;

(4) The utility model has compact and simple structure and safe and reliable operation.

Drawings

FIG. 1 is a block diagram of an automatic slag removal device for a batch pyrolysis furnace according to the present utility model;

fig. 2 is a schematic diagram showing the distribution of the shaftless screw pusher of the present utility model in the slag removal pipe.

Detailed Description

Examples

In order that the utility model may be more clearly understood, a slag removal device for a batch pyrolysis furnace according to the present utility model will be further described with reference to the accompanying drawings, wherein the specific embodiments described herein are for illustration only and are not intended to be limiting.

Referring to fig. 1, an automatic slag removing apparatus for an intermittent pyrolysis furnace, comprising a slag removing pipe 2 connected to a discharge port 1 of the pyrolysis furnace, is characterized in that:

the slag removing pipe 2 is connected with a discharge hole 1 of the pyrolysis furnace through a discharge flange 10, and a movable and static sealing ring 11 is sleeved at the joint of the slag removing pipe 2 and the discharge flange 10;

one end of the slag removing pipe 2 is connected with a feeding screen plate 3, and the feeding screen plate 3 is arranged opposite to the discharge hole 1 of the pyrolysis furnace and is used for screening large-sized materials and small particles;

the other end of the slag removing pipe 2 is connected with an explosion-proof motor 4, the output end of the explosion-proof motor 4 extends into the slag removing pipe 2 and is connected with a shaftless spiral pusher 5, the shaftless spiral pusher 5 is parallel to the axis of the slag removing pipe 2, the lower surface of the shaftless spiral pusher is contacted with the inner wall below the slag removing pipe 2, a discharging pipe 6 is connected below the slag removing pipe 2, a discharging valve 7 is arranged on the discharging pipe 6, and the discharging valve 7 is a discharging sealing star valve for discharging slag in a pipeline;

referring to fig. 1 and 2, a gas path cavity 8 is arranged between the upper surface of the shaftless spiral pusher 5 and the inner wall above the slag removing pipe 2, a gas path expansion joint 9 is connected above the slag removing pipe 2, and the gas path expansion joint 9 is communicated with the gas path cavity 8 for discharging pyrolysis gas;

the axes of the discharging pipe 6 and the air passage expansion joint 9 are mutually perpendicular to the axis of the slag removing pipe 2.

After the slag removing device is used, automatic slag discharging can be realized in a high-temperature state, and the energy saving effect is excellent. Because the temperature in the furnace is higher than the external temperature, the internal pressure is slightly higher than the external pressure when slag is discharged, and air cannot enter the furnace under the action of pressure, so that the dust explosion risk can be eliminated; the shaftless screw is of an eccentric structure, and the upper part of the shaftless screw is provided with a hollow gas path, so that pyrolysis gas can be smoothly discharged in the pyrolysis process, and the pyrolysis furnace is not blocked by the slag discharging screw; when the pyrolysis is finished, the slag discharging valve is opened, the shaftless screw is started, and the pyrolysis furnace reversely rotates to lift materials to the discharge end, so that the slag can be smoothly and automatically discharged.

In addition to the embodiments described above, other embodiments of the utility model are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the utility model.

Claims

1. An automatic slag removal device for an intermittent pyrolysis furnace comprises a slag removal pipe (2) connected with a discharge hole (1) of the pyrolysis furnace, and is characterized in that:

one end of the slag removing pipe (2) is connected with a feeding screen plate (3), and the feeding screen plate (3) is arranged opposite to the discharge hole (1) of the pyrolysis furnace;

the other end of the slag removing pipe (2) is connected with an explosion-proof motor (4), the output end of the explosion-proof motor (4) extends into the slag removing pipe (2) and is connected with a shaftless spiral pusher (5), the shaftless spiral pusher (5) is parallel to the axis of the slag removing pipe (2), the lower surface of the shaftless spiral pusher is contacted with the inner wall below the slag removing pipe (2), a discharging pipe (6) is connected below the slag removing pipe (2), and a discharging valve (7) is arranged on the discharging pipe (6);

an air passage cavity (8) is arranged between the upper surface of the shaftless spiral pusher (5) and the inner wall above the slag removing pipe (2), an air passage expansion joint (9) is connected above the slag removing pipe (2), and the air passage expansion joint (9) is communicated with the air passage cavity (8).

2. The automatic slag removal apparatus for a batch pyrolysis furnace of claim 1, wherein:

the slag removing pipe (2) is connected with the discharge port (1) of the pyrolysis furnace through the discharge flange (10), and a movable sealing ring (11) is sleeved at the joint of the slag removing pipe (2) and the discharge flange (10).

3. The automatic slag removal apparatus for a batch pyrolysis furnace of claim 1 or 2, wherein: the axes of the discharging pipe (6) and the air passage expansion joint (9) are perpendicular to the axis of the slag removing pipe (2).

4. The automatic slag removal apparatus for a batch pyrolysis furnace of claim 1 or 2, wherein: the discharging valve (7) is a discharging sealing star valve.

5. The automatic slag removal apparatus for a batch pyrolysis furnace of claim 1 or 2, wherein: the shaftless spiral pusher (5) is of an eccentric structure.