CN216499221U - A sealed decoking device and pyrolysis furnace for pyrolysis furnace - Google Patents

Abstract

The utility model relates to a cracking furnace technical field especially relates to a sealed decoking device and cracking furnace for cracking furnace, sealed decoking device is including the first pneumatic scum board and the second pneumatic scum board that arrange from top to bottom sets gradually and cover and locate first pneumatic scum board with the outside sealed box of second pneumatic scum board, drive first pneumatic scum board and the second pneumatic scum board through the cylinder and open or close to clear up the burnt piece that drops from the first scum mouth of air current mill, thereby can prevent the loss of carbon black dirt, build good operational environment, avoid harm staff to inhale and cause the health harm; and the sealed box body is provided with a pressure detection meter to detect whether air leaks between the first slag discharge port of the jet mill and the sealed box body or not, and judge whether the first pneumatic slag discharge plate and the second pneumatic slag discharge plate are completely sealed or not, so that potential safety hazards caused by the fact that air is sucked into the jet mill along with equipment negative pressure are avoided.

Description

A sealed decoking device and pyrolysis furnace for pyrolysis furnace

Technical Field

The application relates to the technical field of cracking furnaces, in particular to a sealed decoking device for a cracking furnace and the cracking furnace.

Background

Thermal cracking carbon black is a carbon black material which has the largest yield and is most widely used in carbon black products, and the carbon black has a branched structure formed by a plurality of spherical particles. Because of having good electric and heat conduction capability, the material is widely used in rubber, various batteries and microwave absorption industries. The thermal cracking carbon black is prepared by thermally cracking hydrocarbon raw materials under the conditions of no oxygen (air isolation) and no flame. The natural gas or coke oven gas is used as raw material, but heavy liquid hydrocarbon is used as raw material to produce after being gasified.

In the carbon black cracking process, partial hard carbon black coke blocks can be generated due to temperature field disorder, furnace wall coking or long-time retention of partial carbon black in a high-temperature cracking zone. The coke block has compact microstructure, high hardness, large density, small production amount and difficult effective utilization, and is treated as product impurities in carbon black production enterprises.

The existing decoking mode is that an airflow mill is used for separation, coke blocks with high density can stay at a slag discharge port of the airflow mill and are discharged to a collecting bag, and finished carbon black with low density can be sorted and conveyed to the next procedure. The coke block size is difficult to control, the coke block size can reach about 10cm, the coke block size is only a few millimeters, and a slag discharge port is easy to block. Therefore, during decoking operation, the valve is often manually opened or closed for cleaning. When the valve is manually opened to collect coke blocks, on one hand, whether the valve leaks inwards or not cannot be effectively checked, so that air is sucked into the jet mill along with the negative pressure of equipment, and the internal materials are rich in combustible gas hydrogen, so that potential safety hazards are generated; on the other hand, when the coke blocks are collected, carbon black dust can be dissipated, the operation environment is poor, and operators can inhale a large amount of carbon black dust for a long time to damage bodies.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the application provides a sealed decoking device for a cracking furnace.

The application provides a sealed decoking device for a cracking furnace, which comprises a first pneumatic deslagging plate, a second pneumatic deslagging plate and a sealed box body, wherein the first pneumatic deslagging plate and the second pneumatic deslagging plate are sequentially arranged from top to bottom, the sealed box body is covered outside the first pneumatic deslagging plate and the second pneumatic deslagging plate, the first pneumatic deslagging plate is arranged at a first deslagging hole of an air flow mill, a sealed buffer bin is arranged between the first pneumatic deslagging plate and the second pneumatic deslagging plate, the second pneumatic deslagging plate is arranged at a second deslagging hole at the lower end of the buffer bin, and control switches of the first pneumatic deslagging plate and the second pneumatic deslagging plate are arranged outside the sealed box body; the sealing box body is provided with a pressure detection meter to detect whether air leakage exists between the first slag discharge port of the jet mill and the sealing box body.

In a possible implementation mode, a counter bore is formed in the first pipe body, and a collecting bag is arranged below the second pneumatic deslagging plate so as to collect coke blocks falling from a second deslagging port of the buffer bin; and the collecting bag is controlled by an automatic bagging machine, and a control switch of the automatic bagging machine is arranged outside the sealed box body.

In a possible embodiment, the surge bin is a shuttle-shaped structure with a middle inner diameter larger than the inner diameters of the upper end and the lower end of the surge bin.

In a possible embodiment, a lighting lamp is arranged inside the sealed box body.

In a possible embodiment, the sealed box is provided with a box door for personnel to enter, so as to manually operate the first pneumatic deslagging plate and the second pneumatic deslagging plate.

In one possible embodiment, rubber handling gloves are arranged inside the sealed box body.

In a possible embodiment, the inner ground of the sealed box body is provided with a negative pressure dust removing device.

In a possible embodiment, the sealed enclosure is provided with a transparent area.

In one possible embodiment, the sealed box consists of a stainless steel frame and a glass plate.

The application also provides a cracking furnace, including the cracking furnace body and above-mentioned arbitrary sealed decoking device, the safety inspection device sets up on the cracking furnace body.

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

according to the sealed decoking device for the cracking furnace and the cracking furnace, the sealed decoking device is provided with the sealed box body covering the outer parts of the first pneumatic slag discharge plate and the second pneumatic slag discharge plate, and the first pneumatic slag discharge plate and the second pneumatic slag discharge plate are driven to be opened or closed through the air cylinder so as to clean coke blocks falling from the first slag discharge port of the jet mill, so that carbon black dust can be prevented from escaping, a good operation environment can be created, and the damage to a worker caused by body suction is avoided; and the sealed box body is provided with a pressure detection meter to detect whether air leaks between the first slag discharge port of the jet mill and the sealed box body, and judge whether the first pneumatic slag discharge plate and the second pneumatic slag discharge plate are completely sealed, so that potential safety hazards caused by the fact that air is sucked into the jet mill along with the negative pressure of equipment are avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 shows a schematic view of a sealed decoking apparatus according to an embodiment of the present application;

fig. 2 shows a schematic structural diagram of a second pneumatic deslagging plate provided with a collection bag according to an embodiment of the application.

Description of the main element symbols:

1. the device comprises a first pneumatic deslagging plate, a second pneumatic deslagging plate, a sealed box body, a pressure detection meter, a lamp, a buffer bin, a pneumatic mill, a collecting bag and a storage bag, wherein the first pneumatic deslagging plate is 2, the second pneumatic deslagging plate is 3, the sealed box body is 301, the pressure detection meter is 302, the lamp is 4, and the buffer bin is 5, the pneumatic mill is 6.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in the attached figure 1 of the specification, the embodiment of the application provides a sealed decoking device for a cracking furnace. The sealed decoking device cleans the coke blocks separated by the jet mill 5 in a sealed space through a control valve so as to avoid the damage to the body of the staff caused by the dissipation of carbon black dust; and whether the valve is sealed is judged by monitoring the pressure of the seal box in real time so as to avoid potential safety hazard caused by that the outside air is sucked into the jet mill 5 along with the negative pressure of the equipment.

Sealed decoking device is including the first pneumatic scum board 1 and the pneumatic scum board 2 of second that from top to bottom set gradually and the cover is located first pneumatic scum board 1 with the sealed box 3 of the pneumatic scum board 2 outside of second. The first pneumatic deslagging plate 1 and the second pneumatic deslagging plate 2 are the valves. Specifically, first pneumatic scum board 1 sets up in the first row's of dregs mouth department of jet mill 5 lower extreme, second pneumatic scum board 2 set up in the second row's of dregs mouth department of surge bin 4 lower extreme, surge bin 4 for set up in first pneumatic scum board 1 with the sealed cavity between the second pneumatic scum board 2. For convenience of operation and control, the control switches of the first pneumatic deslagging plate 1 and the second pneumatic deslagging plate 2 are arranged outside the sealed box body 3; and the sealed box 3 is provided with a pressure detection meter 301 to detect whether air leakage exists between the first slag discharge port of the jet mill 5 and the sealed box 3.

Preferably, the surge bin 4 is a shuttle-shaped structure with the middle inner diameter larger than the inner diameters of the upper end and the lower end of the surge bin, so that the middle of the surge bin 4 is thicker, on one hand, the volume of the surge bin 4 is increased, on the other hand, the coke blocks can conveniently fall into the surge bin from the first slag discharge port of the jet mill 5, and the coke blocks can conveniently fall out of the second slag discharge port at the lower end of the surge bin 4.

When the device is applied, the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 2 are controlled to be closed outside the sealed box body 3, and under the action of the jet mill 5, coke blocks with high density are accumulated at a first slag discharge port at the lower end of the jet mill 5, namely, above the first pneumatic slag discharge plate 1; when the coke blocks need to be cleaned, the first pneumatic slag discharge plate 1 is controlled to be opened, and the second pneumatic slag discharge plate 2 is controlled to be closed, so that the coke blocks stacked above the first pneumatic slag discharge plate 1 fall into a buffer bin 4 arranged between the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 2, namely, the coke blocks are stacked above the second pneumatic slag discharge plate 2; when a certain amount of coke blocks are accumulated in the buffer bin 4, the first pneumatic slag discharging plate 1 is controlled to be closed, after the first pneumatic slag discharging plate 1 is completely closed, the second pneumatic slag discharging plate 2 is controlled to be opened, the coke blocks accumulated in the buffer bin 4 are cleaned, and then the second pneumatic slag discharging plate 2 is closed. The decoking operation is sequentially performed in this order.

In the decoking operation, the operator observes the pressure detection gauge 301 provided in the seal box 3 in real time. When coke blocks accumulated at a first slag discharge port at the lower end of the jet mill 5 are cleaned, namely the first pneumatic slag discharge plate 1 is opened, and the second pneumatic slag discharge plate 2 is closed, if a negative pressure value appears in the pressure detection meter 301, the second pneumatic slag discharge plate 2 is not completely closed, and an air leakage phenomenon appears, so that an operator can timely process the coke blocks to determine that the second pneumatic slag discharge plate is closed in place; when coke blocks accumulated in the buffer bin 4 are cleaned, namely the first pneumatic slag discharging plate 1 is closed, and the second pneumatic slag discharging plate 2 is opened, if a negative pressure value appears on the pressure detection meter 301, the first pneumatic slag discharging plate 1 is not completely closed, and an air leakage phenomenon appears, so that an operator can timely process the coke blocks to determine that the first pneumatic slag discharging plate 1 is closed in place. When the first pneumatic deslagging plate 1 and the second pneumatic deslagging plate 2 are both closed, if a negative pressure value appears in the pressure detection meter, the first pneumatic deslagging plate 1 or the second pneumatic deslagging plate 2 is likely to leak gas, so that an operator can timely process the gas leakage to determine that the first pneumatic deslagging plate 2 and the second pneumatic deslagging plate 2 are both closed in place. Thereby can avoid in time the air in the sealed box 3 along with the equipment negative pressure inhales the potential safety hazard that causes in the jet mill 5.

Because the first pneumatic deslagging plate 1 and the second pneumatic deslagging plate 2 are covered by the sealing box body 3, when coke blocks are cleaned, the phenomenon of carbon black dust dissipation in the prior art can be avoided, a good operation environment is created, and the staff is guaranteed not to be sucked into a large amount of carbon black dust to cause chronic diseases in long-term operation.

It should be noted that the first pneumatic deslagging plate 1 and the second pneumatic deslagging plate 2 are not limited to be driven by cylinders, and may be driven by electric power or hydraulic power in other embodiments, which is not limited in this application.

In some embodiments, as shown in figure 2 of the specification, in order to better collect the coke cake cleaned from the surge bin 4, a collection bag 6 is provided below the second pneumatic slag discharge plate 2 to collect the coke cake falling from the second slag discharge port of the surge bin 4; and the collection bag 6 is bagged by an automatic bagging machine for efficiency improvement, and similarly, a control switch for facilitating the operation of the automatic bagging machine is provided outside the sealed box body 3. The automatic bagging machine should be a technical means well known to those skilled in the art, and will not be described herein.

In some embodiments, in order to facilitate the staff to monitor the decoking process in the sealed box body in real time, an illuminating lamp 302 is arranged in the sealed box body 3, and at least a partial area of the sealed box body 3 is arranged to be a transparent structure, and the sealed box body 3 is preferably formed by a stainless steel frame and a glass plate.

In some embodiments, to prevent control failure of the first and second pneumatic slag chutes 1, 2, the sealed decoking apparatus leaves room for manual intervention. Set up the chamber door that can personnel get into promptly on sealed box 3, inside configuration rubber operation gloves 303, under the special circumstances of being convenient for, through personnel get into sealed box 3 manual operation first pneumatic slagging board 1 and the pneumatic slagging board 2 of second and carry out the decoking operation.

In order to avoid sucking carbon black dust during manual decoking operation, negative pressure dust removal equipment is arranged in the sealed box body 3, and personnel open the negative pressure dust removal equipment to adsorb the carbon black dust escaped from the sealed box body 3 before entering the sealed box body.

An embodiment of the application still provides a pyrolysis furnace, including pyrolysis furnace body and above-mentioned arbitrary embodiment sealed decoking device, the safety inspection device sets up on the pyrolysis furnace body.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means 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 application. 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 application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A sealed decoking device for a cracking furnace is characterized by comprising a first pneumatic slag discharge plate and a second pneumatic slag discharge plate which are sequentially arranged from top to bottom, and a sealed box body covering the outer parts of the first pneumatic slag discharge plate and the second pneumatic slag discharge plate, wherein the first pneumatic slag discharge plate is arranged at a first slag discharge opening of an air flow mill, a sealed buffer bin is arranged between the first pneumatic slag discharge plate and the second pneumatic slag discharge plate, the second pneumatic slag discharge plate is arranged at a second slag discharge opening at the lower end of the buffer bin, and control switches of the first pneumatic slag discharge plate and the second pneumatic slag discharge plate are arranged outside the sealed box body; the sealing box body is provided with a pressure detection meter to detect whether air leakage exists between the first slag discharge port of the jet mill and the sealing box body.

2. The sealed decoking apparatus for a pyrolysis furnace of claim 1, wherein a collection bag is provided below the second pneumatic deslagging plate to collect coke lumps falling from the second deslagging port of the surge bin; and the collecting bag is controlled by an automatic bagging machine, and a control switch of the automatic bagging machine is arranged outside the sealed box body.

3. The sealed decoking device for the cracking furnace of claim 2, wherein the surge bin is a shuttle-shaped structure with a middle inner diameter larger than the inner diameters of the upper end and the lower end of the surge bin.

4. The sealed decoking device for the cracking furnace of claim 3, wherein an illuminating lamp is arranged inside the sealed box body.

5. The sealed decoking apparatus for a pyrolysis furnace of claim 4, wherein the sealed box body is provided with a box door for personnel to enter for manually operating the first and second pneumatic slagging panels.

6. The sealed decoking device for a pyrolysis furnace of claim 5, wherein the inside of the sealed box body is provided with rubber operating gloves.

7. The sealed decoking device for the cracking furnace of claim 6, wherein the inner ground of the sealed box body is provided with a negative pressure dust removal device.

8. The sealed decoking apparatus for a pyrolysis furnace of claim 7, wherein the sealed box is provided with a transparent area.

9. The sealed decoking apparatus for a pyrolysis furnace of claim 7, wherein the sealed box body is composed of a stainless steel frame and a glass plate.

10. A pyrolysis furnace comprising a pyrolysis furnace body and the sealed decoking apparatus of any one of claims 1 to 9, the sealed decoking apparatus being disposed on the pyrolysis furnace body.

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