A coke side suction hood for coke oven and a coke pushing dust removal system for coke oven

Abstract

An embodiment of the present application provides a coke side dust suction hood for a coke oven and a coke pushing dust removal system for a coke oven. Among them, the coke side dust suction hood for a coke oven includes a dust suction hood body and a coke guide hood; the dust suction hood body is located on the coke side of the coke oven furnace body; the coke guide hood is located inside the dust suction hood body, and a gap is reserved between its outer wall and the inner wall of the dust suction hood body; the coke guide hood is provided with a sealing channel, the inlet end of which is fixedly connected to the coke guide grid of the coke oven, and the outlet end faces the quenching car of the coke oven, and is used to guide the coke pushed out from the carbonization chamber of the coke oven furnace body to fall into the quenching car through the sealing channel of the coke guide hood. Through this solution, the coke pushing dust removal effect on the coke side of the coke oven can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of coke oven dust removal, and particularly to a suction hood on the coke side of a coke oven and a coke discharging dust removal system for a coke oven. Background Art

[0002] During the coke discharging process of a coke oven, the coal in the carbonization chamber of the coke oven is coked by high-temperature dry distillation and then pushed out from the carbonization chamber. The incandescent coke falls into the quenching car through the coke guide grid. After the coke is pushed out, it breaks up and burns in the air, and the flue gas and coke dust containing harmful substances such as tar and a large amount of dust are emitted into the atmosphere, seriously polluting the environment.

[0003] To control the unorganized fugitive flue gas generated on the coke side furnace head during the coke discharging process of a coke oven, the prior art mostly uses a ground station dust removal system for treatment. The system includes a suction hood, a cooler, a dust removal device, a dust removal fan, and a chimney connected in series through pipelines. Among them, the suction hood is arranged on the coke pushing car and moves synchronously with the coke pushing car. When the ground station dust removal system works, under the action of the dust removal fan, the flue gas is collected through the suction hood, sent to the cooler for cooling through the conversion and conduction device, and then purified through the dust removal device, and finally discharged into the atmosphere through the chimney.

[0004] However, when the existing ground station dust removal system works, there is still a large amount of flue gas escaping on the coke side of the coke oven, especially during the coke discharging process, and its dust removal effect is not ideal. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a suction hood on the coke side of a coke oven and a coke discharging dust removal system for a coke oven to improve the dust removal effect of coke discharging on the coke side of the coke oven. The specific technical solutions are as follows:

[0006] In a first aspect, the embodiments of the present application provide a suction hood on the coke side of a coke oven, including:

[0007] A suction hood body, which is located on the coke side of the coke oven body;

[0008] A coke guide hood, which is located inside the suction hood body, and a gap is reserved between the outer wall of the coke guide hood and the inner wall of the suction hood body;

[0009] The coke guide hood is provided with a sealed channel, the inlet end of which is fixedly connected to the coke guide grid of the coke oven, and the outlet end faces the quenching car of the coke oven, and is used to guide the coke pushed out from the carbonization chamber of the coke oven body to fall into the quenching car through the sealed channel of the coke guide hood.

[0010] In the solution provided by this application, coke falls into the quenching car through the sealed channel of the coke guide hood. During the falling process of the coke, the flue gas lifted by the thermal buoyancy of the coke, part of it falls into the quenching car together with the coke, and the other part can be led out through the gap between the coke guide hood and the dust suction hood body under the action of the dust removal fan and purified by the dust removal equipment. Since the flue gas first falls and then is sucked upward from the gap between the coke guide hood and the dust suction hood body, it avoids the additional flue gas generated by the reverse contact combustion of the air sucked by the dust suction hood body and the falling coke, and effectively improves the dust removal effect on the coke side of the coke oven.

[0011] In some embodiments of this application, the coke guide hood is a hollow box structure, and openings are respectively provided on two adjacent sides of the box body. One of the openings is the inlet end, and the other opening is the outlet end.

[0012] In some embodiments of this application, it further includes:

[0013] An air partition plate, which is arranged on the outer circumference of the bottom of the dust suction hood body in a movable connection manner;

[0014] A lifting mechanism, the output end of the lifting mechanism is connected to the air partition plate, and drives the air partition plate to move up and down, so that the air partition plate blocks the gap between the bottom of the dust suction hood body and the inlet end of the coke tank on the quenching car.

[0015] In some embodiments of this application, the air partition plate is an annular structure, the end close to the dust suction hood body is the small end, and the end far from the dust suction hood body is the large end.

[0016] In a second aspect, an embodiment of this application further provides a coke oven coke discharging dust removal system, including: the coke oven coke side dust suction hood as described in the first aspect above.

[0017] In some embodiments of this application, it further includes a dust removal equipment, a flue gas conduction device and a ventilation pipe;

[0018] The dust suction hood is connected to the dust removal equipment through the ventilation pipe and the flue gas conduction device, and the ventilation pipe is provided with through holes for air intake or measuring flue gas parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other embodiments can also be obtained based on these drawings.

[0020] Figure 1It is a schematic structural diagram of a coke pushing dust removal system provided by an embodiment of the present application;

[0021] Figure 2 is Figure 1 a schematic structural diagram of a coke guide hood in a coke pushing dust removal system of a coke oven;

[0022] Figure 3 is Figure 1 a schematic structural diagram of an air partition in a coke pushing dust removal system of a coke oven.

[0023] The descriptions of the labels in the figure are as follows:

[0024] 11 - Coke oven body, 12 - Coke guide grid, 13 - Quenching car, 14 - Dust hood body, 15 - Ventilation pipe, 16 - Flue gas conduction device;

[0025] 2 - Coke guide hood; 3 - Air partition; 4 - Through hole. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art based on the present application belong to the scope of protection of the present application.

[0027] In order to improve the dust removal effect of coke pushing on the coke side of the coke oven, an embodiment of the present application provides a coke side dust hood of a coke oven and a coke pushing dust removal system of the coke oven. The technical solutions of the present application will be described in detail below in conjunction with the accompanying drawings.

[0028] As Figure 1 shown, an embodiment of the present application provides a coke side dust hood of a coke oven, including:

[0029] A dust hood body 14, and the dust hood body 14 is located on the coke side of the coke oven body 11;

[0030] A coke guide hood 2, the coke guide hood 2 is located inside the dust hood body 14, and a gap is reserved between its outer wall and the inner wall of the dust hood body 14;

[0031] The coke guide hood 2 is provided with a sealed channel, the inlet end of which is fixedly connected to the coke guide grid 12 of the coke oven, and the outlet end faces the quenching car 13 of the coke oven, and is used to guide the coke pushed out from the carbonization chamber of the coke oven body 11 to fall into the quenching car 13 through the sealed channel of the coke guide hood 2.

[0032] In the solution provided by this application, coke falls into the quenching car 13 through the sealed channel of the coke guide hood 2. During the falling process of the coke, the flue gas lifted by the thermal buoyancy of the coke, a part of it falls into the quenching car 13 together with the coke, and the other part can be led out through the gap between the coke guide hood 2 and the dust suction hood body 14 under the action of the dust removal fan and purified by the dust removal equipment. Since the flue gas first falls and then is sucked upward from the gap between the coke guide hood 2 and the dust suction hood body 14, it avoids the additional flue gas generated by the reverse contact combustion of the air sucked by the dust suction hood body 14 and the falling coke, effectively improving the dust removal effect on the coke side of the coke oven.

[0033] In addition, the solution of this application reduces the secondary dust generated by the reverse contact between air and coke, and also reduces the burning loss generated by the contact combustion of coke and air during coke discharging. Moreover, since the amount of coke burning loss is reduced, the heat generated by the burning loss and brought into the dust removal system is correspondingly reduced, and the air volume required for the dust removal system to cool down is less, that is, the load is reduced. Therefore, the air volume and energy consumption of the dust removal fan in the dust removal system can be effectively reduced, with considerable economic benefits.

[0034] In some embodiments of this application, as Figure 2 shown, the coke guide hood 2 is a hollow box structure, and openings are respectively provided on two adjacent sides of the box body. One of the openings is the inlet end, and the other opening is the outlet end.

[0035] As Figure 2 shown, for the coke guide hood 2 with a box structure provided in the embodiment of this application, its two adjacent sides are the side facing the coke guide grid 12 and the bottom surface facing the quenching car 13. The coke guide hood 2 with this structure can be made by cutting and welding steel plates, which is convenient to manufacture, economical and practical.

[0036] In some embodiments of this application, as Figure 1 and Figure 3 shown, the coke side dust suction hood of the coke oven further includes:

[0037] An air partition 3, which is arranged on the outer circumference of the bottom of the dust suction hood body 14 in a movable connection manner;

[0038] A lifting mechanism, the output end of which is connected to the air partition 3, driving the air partition 3 to move up and down, so that the air partition 3 blocks the gap between the bottom of the dust suction hood body 14 and the inlet end of the coke tank on the quenching car 13.

[0039] Among them, after the quenching car 13 is in place, the air partition 3 descends under the drive of the lifting mechanism, blocking the gap between the bottom of the dust suction hood body 14 and the inlet end of the coke tank on the quenching car 13.

[0040] It can be understood that there are various ways to implement the lifting mechanism. For example, a rolling resistance screw mechanism, a crank connecting rod mechanism, a hydraulic lifting mechanism, a pneumatic lifting mechanism, etc. can be adopted. In application, a suitable lifting mechanism can be selected according to actual needs.

[0041] In the solution of the embodiment of the present application, the air baffle 3 is driven by the lifting mechanism to block the gap between the bottom of the dust suction hood body 14 and the inlet end of the coke pot on the coke quenching car 13, effectively preventing a part of the flue gas generated by the gravity of the coke during the process of the coke falling into the coke pot of the coke quenching car 13 from escaping from the gap between the inlet end of the coke pot on the coke quenching car 13 and the dust suction hood body 14, so as to fully capture the flue gas and further improve the dust removal effect on the coke side of the coke oven.

[0042] In some embodiments of the present application, the air baffle 3 is of an annular structure, the end close to the dust suction hood body 14 is the small end, and the end far from the dust suction hood body 14 is the large end.

[0043] In the embodiment of the present application, the annular air baffle 3 is similar to a horn-shaped structure, and its large end is buckled on the inlet end of the coke pot on the coke quenching car 13, which can effectively seal the gap between the bottom of the dust suction hood body 14 and the inlet end of the coke pot on the coke quenching car 13.

[0044] In addition, as Figure 1 shown, the embodiment of the present application also provides a coke oven coke discharging dust removal system, including: the coke oven coke side dust suction hood described in any one of the above.

[0045] Since the coke oven coke discharging dust removal system of the embodiment of the present application includes the coke oven coke side dust suction hood provided in the above embodiment, it has all the beneficial effects of the above coke oven coke side dust suction hood. To avoid repeated description, it will not be elaborated here.

[0046] In some embodiments of the present application, the coke oven coke discharging dust removal system further includes a dust removal device, a flue gas conduction device 16 and a ventilation pipe 15;

[0047] The dust suction hood is connected to the dust removal device through the ventilation pipe 15 and the flue gas conduction device 16, and the ventilation pipe 15 is provided with a through hole 4 for air intake or measuring flue gas parameters.

[0048] Among them, various types of dust removal equipment can be used, such as bag filters, pulse dust collectors, electrostatic precipitators, etc. Since the dust removal equipment belongs to the prior art, it will not be elaborated here. The flue gas conduction device 16 is used to introduce the coke discharging flue gas from the dust suction hood body 14 into the dust removal equipment of the coke oven coke discharging dust removal system. Currently, the flue gas conduction device 16 is basically divided into two methods. One is the sealed tape lifting trolley method, and the other is the fixed interface flap valve docking method. Both conduction methods have their own advantages and disadvantages, and can be selected according to needs in actual applications. Since the flue gas conduction device 16 belongs to the prior art, it will not be elaborated here.

[0049] In the coke oven coke discharging dust removal system provided by the embodiment of the present application, by opening a through hole 4 for air intake in the ventilation pipe 15, the air inhaled by the dust removal system can be redistributed; that is, opening the through hole 4 reduces the pressure at the bottom of the dust suction hood body 14, and the collected air is reduced. While the ventilation pipe 15 is in a negative pressure state, a large amount of air in the atmosphere is inhaled through the through hole 4. The air inhaled through the through hole 4 is mixed with the high-temperature flue gas collected through the dust suction hood body 14, and the temperature of the flue gas is reduced to a normal heat-resistant temperature below 200 °C, which can protect the subsequent dust removal equipment of the flue gas conduction device 16 to work at a normal heat-resistant temperature. In addition, a through hole 4 for measuring flue gas parameters can also be opened in the ventilation pipe 15 to realize the monitoring of parameters such as flue gas temperature, pressure, and flow rate.

[0050] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the element.

[0051] Each embodiment in this specification is described in a related manner. The same or similar parts between each embodiment can be referred to each other, and the key points of each embodiment are the differences from other embodiments.

[0052] The above are only the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application are all included in the protection scope of the present application.

Claims

1. A coke side dust suction hood for a coke oven, characterized in that, Comprising: A dust suction hood body (14), the dust suction hood body (14) being located on the coke side of the coke oven body (11); A coke guide hood (2), the coke guide hood (2) being located within the dust suction hood body (14), with a gap reserved between its outer wall and the inner wall of the dust suction hood body (14); The coke guide hood (2) is provided with a sealing channel, the inlet end of which is fixedly connected to the coke guide grid (12) of the coke oven, and the outlet end faces the quenching car (13) of the coke oven, for guiding the coke pushed out from the carbonization chamber of the coke oven body (11) to fall into the quenching car (13) through the sealing channel of the coke guide hood (2); An air partition (3), the air partition (3) being arranged in a movably connected manner on the outer circumference of the bottom of the dust suction hood body (14); the air partition (3) is used to seal the gap between the bottom of the dust suction hood body (14) and the inlet of the coke pot on the quenching car (13).

2. The coke-side dust suction hood according to claim 1, wherein, The coke guide hood (2) is a hollow box structure, with openings respectively provided on two adjacent sides of the box body, one of the openings being the inlet end and the other being the outlet end.

3. The coke side suction hood of the coke oven according to claim 1, characterized in that, Further comprising: A lifting mechanism, the output end of the lifting mechanism being connected to the air partition (3), driving the air partition (3) to move up and down, so that the air partition (3) blocks the gap between the bottom of the dust suction hood body (14) and the inlet end of the coke pot on the quenching car (13).

4. The coke-side dust suction hood according to claim 3, characterized in that, The air partition (3) is an annular structure, the end close to the dust suction hood body (14) being the small end and the end far from the dust suction hood body (14) being the large end.

5. A coke pushing dust removal system for a coke oven, characterized in that, Comprising: The coke oven coke side dust suction hood according to any one of claims 1 to 4.

6. The coke pushing dust removal system according to claim 5, characterized in that, Further comprising a dust removal device, a flue gas conduction device (16) and a ventilation pipe (15); The dust suction hood is connected to the dust removal device through the ventilation pipe (15) and the flue gas conduction device (16), and the ventilation pipe (15) is provided with a through hole (4) for air intake or measuring flue gas parameters.

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