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 kind of sealed decoking device for cracking furnace and cracking furnace

technical field

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

Background technique

Pyrolysis carbon black is a carbon black material with the largest output and widest application in the carbon black category. This type of carbon black is a branched structure composed of multiple spherical particles. Because of its good electrical and thermal conductivity, it has been widely used in rubber, various batteries and microwave absorption industries. Thermal carbon black is obtained by thermal cracking of hydrocarbon raw materials in the absence of oxygen (isolated from air) and without flame. Natural gas or coke oven gas is used as raw material, but some heavy liquid hydrocarbons are gasified as raw materials for production.

During the carbon black cracking process, some hardened carbon black coke lumps will be produced due to the disorder of the temperature field, the coking of the furnace wall or the local carbon black staying in the high temperature cracking zone for a long time. This part of the coke block has compact microstructure, high hardness, high density, small amount of production, and is difficult to use effectively. It is treated as product impurities in carbon black production enterprises.

The current decoking method is basically to use jet mill for separation. The coke with high density will stay at the slag discharge port of the jet mill and be discharged to the collection bag, and the finished carbon black with low density will be sorted and transported to the next process. Because the size of the coke block is difficult to control, the large one can reach about 10cm, and the small one is only a few millimeters, which is easy to block the slag discharge port. Therefore, during the decoking operation, it is often necessary to manually open or close the valve for cleaning. When manually opening the valve to collect coke lumps, on the one hand, it is impossible to effectively check whether the valve is leaking, causing the air to be sucked into the jet mill with the negative pressure of the equipment, and the internal materials are rich in combustible gas hydrogen, thus causing potential safety hazards; When the coke lumps, it will cause carbon black dust to escape, the working environment is poor, and the operator will also inhale a large amount of carbon black dust for a long time to damage the body.

Utility model content

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

A sealed decoking device for a cracking furnace provided by the present application includes a first pneumatic slag discharge plate and a second pneumatic slag discharge plate arranged in sequence from top to bottom, and a cover arranged on the first pneumatic slag discharge plate and the sealed box outside the second pneumatic slag discharge plate, the first pneumatic slag discharge plate is arranged at the first slag discharge port of the jet mill, the first pneumatic slag discharge plate and the second pneumatic slag discharge plate A sealed buffer bin is arranged between the slag plates, the second pneumatic slag discharge plate is arranged at the second slag discharge port at the lower end of the buffer bin, and the first pneumatic slag discharge plate and the second pneumatic slag discharge plate The control switch of the board is arranged outside the sealed box body; the sealed box body is provided with a pressure detection gauge to detect whether there is air leakage between the first slag discharge port of the jet mill and the sealed box body.

In a possible implementation manner, a counterbore is provided inside the first pipe body, and a collection bag is arranged below the second pneumatic slag discharge plate to collect the slag falling from the second slag discharge port of the buffer bin. and the collection bag is controlled by an automatic bagging machine, and the control switch of the automatic bagging machine is arranged outside the sealed box.

In a possible implementation manner, the buffer bin is a shuttle-shaped structure with a middle inner diameter greater than its upper and lower ends.

In a possible implementation manner, a lighting lamp is arranged inside the sealed box.

In a possible implementation manner, the sealed box body is provided with a box door for personnel to enter, so as to manually operate the first pneumatic slag discharge plate and the second pneumatic slag discharge plate.

In a possible implementation manner, rubber operating gloves are configured inside the sealed box.

In a possible implementation manner, a negative pressure dust removal device is arranged on the inner floor of the sealed box.

In a possible implementation manner, the sealed box is provided with a transparent area.

In a possible implementation, the sealed box is composed of a stainless steel frame and a glass plate.

The present application also provides a cracking furnace, comprising a cracking furnace body and any one of the above-mentioned sealed coke removal devices, and the safety detection device is arranged on the cracking furnace body.

Compared with the prior art, the beneficial effects of the present application:

In the sealed decoking device for cracking furnace and the cracking furnace provided in this embodiment, the sealed decoking device is provided with a sealing box on the outside of the first pneumatic slag discharge plate and the second pneumatic slag discharge plate, and the first pneumatic slag discharge plate is driven by a cylinder. The pneumatic slag discharge plate and the second pneumatic slag discharge plate are opened or closed to clean up the coke lumps falling from the first slag discharge port of the jet mill, which can prevent the carbon black dust from escaping, create a good working environment, and avoid damage to employees Inhalation causes physical damage; and the sealed box is provided with a pressure detection gauge to detect whether there is air leakage between the first slag discharge port of the jet mill and the sealed box, and to determine the first pneumatic slag discharge plate and the second pneumatic slag discharge plate Whether it is completely sealed to prevent the air from being sucked into the airflow mill with the negative pressure of the equipment, causing potential safety hazards.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, so It should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.

FIG. 1 shows a schematic structural diagram of the sealed decoking device according to an embodiment of the present application;

FIG. 2 shows a schematic structural diagram of a second pneumatic slag discharge plate provided with a collection bag according to an embodiment of the present application.

Description of main component symbols:

1. The first pneumatic slag discharge plate, 2. The second pneumatic slag discharge plate, 3. The sealed box body, 301, the pressure detection meter, 302, the lighting lamp, 4, the buffer bin, 5, the jet mill, 6, the collection bag.

Detailed ways

The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, but should not be construed as a limitation on the present application.

In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed and operate in a particular orientation and are therefore not to be construed as limitations on this application.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

In this application, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly stated and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

As shown in FIG. 1 of the description, an embodiment of the present 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 the sealed space by controlling the valve, so as to avoid carbon black dust from escaping and harming the body of employees; Avoid the outside air being sucked into the airflow mill 5 with the negative pressure of the equipment, causing potential safety hazards.

The sealed decoking device includes a first pneumatic slag discharge plate 1 and a second pneumatic slag discharge plate 2 arranged in sequence from top to bottom, and a cover arranged on the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate. The sealed box 3 outside the slag plate 2 . The first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 2 are the above-mentioned valves. Specifically, the first pneumatic slag discharge plate 1 is disposed at the first slag discharge port at the lower end of the jet mill 5 , and the second pneumatic slag discharge plate 2 is disposed at the second slag discharge port at the lower end of the buffer bin 4 , the buffer bin 4 is a sealed cavity disposed between the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 2 . In order to facilitate control, the control switches of the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 2 are arranged outside the sealed box body 3; and the sealed box body 3 is provided with a pressure detection gauge 301, To detect whether there is air leakage between the first slag discharge port of the jet mill 5 and the sealed box 3 .

Preferably, the buffer bin 4 is a shuttle-shaped structure with a middle inner diameter larger than the inner diameter of its upper and lower ends. The reason why the middle part of the buffer bin 4 is set to be fatter is to increase the volume of the buffer bin 4 on the one hand, and it is convenient for coking on the other hand. The blocks fall into the buffer bin from the first slag discharge port of the jet mill 5 , which also facilitates the coke blocks to fall out from the second slag discharge port at the lower end of the buffer bin 4 .

During application, the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 2 are controlled to be closed outside the sealed box 3. Under the action of the jet mill 5, the coke with high density accumulates on the first part of the lower end of the jet mill 5. At the slag discharge port, it is accumulated above the first pneumatic slag discharge plate 1; when it is necessary to clean up these coke blocks, the first pneumatic slag discharge plate 1 is controlled to open, and the second pneumatic slag discharge plate 2 is closed, so that the accumulation on the first The coke masses above the pneumatic slag discharge plate 1 fall into the buffer bin 4 arranged between the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 2, that is, they are accumulated above the second pneumatic slag discharge plate 2; When a certain amount of coke lumps are accumulated in the buffer bin 4, first control the first pneumatic slag discharge plate 1 to close, after ensuring that the first pneumatic slag discharge plate 1 is completely closed, then control the second pneumatic slag discharge plate 2 to open to clear the buffer bin 4, and then close the second pneumatic slag discharge plate 2. Carry out the decoking operation in this order.

Among them, during the decoking operation, the operator needs to observe the pressure detection table 301 provided in the sealed box 3 in real time. When cleaning the coke lumps accumulated at the first slag discharge port at the lower end of the jet mill 5, that is, when 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 on the pressure detection table 301, it means that the first pneumatic slag discharge plate 1 is opened and the second pneumatic slag discharge plate 2 is closed. The second pneumatic slag discharge plate 2 is not completely closed, and there is an air leakage phenomenon, which requires the operator to deal with it in time to ensure that the second pneumatic slag discharge plate is closed in place; when cleaning the accumulated coke in the buffer bin 4, the first When the first pneumatic slag discharge plate 1 is closed and the second pneumatic slag discharge plate 2 is opened, if the pressure detection table 301 shows a negative pressure value, it means that the first pneumatic slag discharge plate 1 is not completely closed, and there is air leakage. Personnel handle it in time to confirm that the first pneumatic slag discharge plate 1 is closed in place. When both the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 2 are closed, if the pressure detection gauge shows a negative pressure value, it means that either the first pneumatic slag discharge plate 1 or the second pneumatic slag discharge plate 2 may appear. In case of air leakage, the operator needs to deal with it in time to make sure that both the first pneumatic slag discharge plate 2 and the second pneumatic slag discharge plate 2 are closed in place. Therefore, the potential safety hazard caused by the air in the sealed box 3 being sucked into the airflow mill 5 with the negative pressure of the equipment can be avoided in time.

Since the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 2 are covered with a sealing box 3, when cleaning coke lumps, the phenomenon of carbon black dust escape existing in the prior art can be avoided, and a good It ensures that employees will not be inhaled a large amount of carbon black dust and cause chronic diseases during long-term operation.

It should be noted that the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 2 are not limited to being driven by air cylinders. Limit this.

In some embodiments, as shown in FIG. 2 of the description, in order to better collect the coke lumps cleaned out from the buffer bin 4, a collection bag 6 is arranged under the second pneumatic slag discharge plate 2 to collect the coke from the buffer bin 4 4. The coke mass dropped from the second slag discharge port; and in order to improve the efficiency, the collection bag 6 is controlled by the automatic bagging machine for bagging. Similarly, in order to facilitate the operation of the automatic bagging machine, the control switch is arranged in the sealed box 3 the exterior. Among them, the automatic bagging machine should be a technical means well known to those skilled in the art, and will not be repeated here.

In some embodiments, in order to facilitate the staff to monitor the defocusing process in the sealed box in real time, a lighting lamp 302 is arranged in the sealed box 3, and at least a part of the sealed box 3 is set to a transparent structure, preferably a stainless steel frame is used and the glass plate to form the sealed box 3 .

In some embodiments, in order to prevent the control failure of the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate 2, the sealed decoking device reserves space for manual intervention. That is, a box door that can be entered by personnel is provided on the sealed box 3, and rubber operating gloves 303 are arranged inside, so that under special circumstances, the first pneumatic slag discharge plate 1 and the second pneumatic slag discharge plate can be manually operated by personnel entering the sealed box 3. 2 Carry out the decoking operation.

In order to avoid the inhalation of carbon black dust during manual decoking operations, a negative pressure dust removal device is installed in the sealed box 3. Before entering the sealed box, the personnel turn on the negative pressure dust removal device to remove the escaping carbon in the sealed box 3. Black dust adsorption.

An embodiment of the present application further provides a cracking furnace, comprising a cracking furnace body and the sealed coking decoking device described in any of the above embodiments, and the safety detection device is provided on the cracking furnace body.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed 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, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. a kind of sealing decoking device for cracking furnace, is characterized in that, comprises the first pneumatic slag discharge plate and the second pneumatic slag discharge plate that are arranged successively from top to bottom, and cover is arranged in the described first pneumatic discharge plate. The sealed box outside the slag plate and the second pneumatic slag discharge plate, the first pneumatic slag discharge plate is arranged at the first slag discharge port of the jet mill, the first pneumatic slag discharge plate and the second pneumatic slag discharge plate A sealed buffer silo is arranged between the pneumatic slag discharge plates, the second pneumatic slag discharge plate is arranged at the second slag discharge port at the lower end of the buffer silo, and the first pneumatic slag discharge plate and the second pneumatic slag discharge plate The control switch of the slag discharge plate is arranged outside the sealed box body; the pressure detection gauge is set on the sealed box body to detect whether there is air leakage between the first slag discharge port of the jet mill and the sealed box body . 2. a kind of sealing decoking device for cracking furnace according to claim 1, is characterized in that, the bottom of described second pneumatic slag discharge plate is provided with collection bag, to collect from the second row of described buffer bin and the collection bag is controlled by an automatic bagging machine, and the control switch of the automatic bagging machine is arranged outside the sealed box. 3 . A sealed decoking device for cracking furnace according to claim 2 , wherein the buffer bin is a shuttle-shaped structure with an inner diameter in the middle larger than the inner diameters at its upper and lower ends. 4 . 4 . The sealed decoking device for a cracking furnace according to claim 3 , wherein a lighting lamp is arranged inside the sealed box. 5 . 5. a kind of sealed decoking device for cracking furnace according to claim 4, is characterized in that, described sealed box body is provided with the box door that personnel enters, to manually operate described first pneumatic slag discharge plate and all The second pneumatic slag discharge plate. 6 . The sealed decoking device for cracking furnace according to claim 5 , wherein rubber operating gloves are configured inside the sealed box. 7 . 7 . The sealed decoking device for cracking furnace according to claim 6 , wherein a negative pressure dust removal device is arranged on the inner ground of the sealed box. 8 . 8 . The sealed decoking device for cracking furnace according to claim 7 , wherein the sealed box body is provided with a transparent area. 9 . 9 . The sealed decoking device for cracking furnace according to claim 7 , wherein the sealed box is composed of a stainless steel frame and a glass plate. 10 . 10. A cracking furnace, characterized in that it comprises a cracking furnace body and the sealed coking decoking device according to any one of claims 1-9, wherein the sealing decoking device is arranged on the cracking furnace body.

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