Coke oven riser pipe for regulating the pressure in the carbonization chamber

Abstract

The present invention provides a coke oven riser pipe for regulating the pressure in a carbonization chamber, which comprises a riser pipe body with two ends respectively connected to the carbonization chamber and the gas collecting pipe. An air intake structure is arranged on the peripheral wall of the riser pipe body, and the air intake structure is used to convey gas into the riser pipe body in a direction away from the end where the riser pipe body is connected to the carbonization chamber, so as to be able to generate a negative pressure at the end where the riser pipe body is connected to the carbonization chamber within the riser pipe body. The coke oven riser pipe for regulating the pressure in the carbonization chamber provided by the present invention can control the pressure in the carbonization chamber, thereby reducing the emission of pollutants in the carbonization chamber, and can improve the pressure control effect on a large-volume carbonization chamber, so as to more effectively reduce the emission of pollutants in the large-volume carbonization chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of coking industrial equipment, and in particular, to a coke oven riser pipe for regulating the pressure in the carbonization chamber. Background Art

[0002] The coking industry is a basic industry with high pollution, high emissions and high energy consumption. A coke oven is the core thermal equipment in a coking enterprise. During the coking process, the tar vapor generated in the carbonization chamber usually enters the collecting pipe through the riser pipe connected to the carbonization chamber and the collecting pipe respectively and is collected. However, during the coal charging process, pollutants such as gas and dust containing tar substances are generated in the carbonization chamber. During the coking process, pollutants such as raw gas are generated in the carbonization chamber. If the pressure of these pollutants is too high, they will escape into the atmosphere from the connection between the carbonization chamber and the riser pipe and the furnace door seal of the carbonization chamber. In addition, too high pressure in the carbonization chamber is likely to cause leakage between the carbonization chamber and the combustion. The above situations will not only cause waste of energy, but also pollute the environment and damage human health. Therefore, how to prevent the escape of these pollutants has become an urgent problem to be solved in the coking industry.

[0003] The existing coke oven carbonization chamber pressure regulation technology usually generates a negative pressure of about 350 Pa in the collecting pipe through the suction of the gas blower, and sprays high-pressure ammonia water at the bridge pipe where the riser pipe is connected to the collecting pipe. By means of the evaporation of the ammonia water and the condensation of some components in the raw gas, the temperature of the raw gas entering the riser pipe is reduced and the volume shrinks, so as to generate a negative pressure greater than or equal to 400 Pa at one end where the riser pipe is connected to the carbonization chamber, so that the pollutants in the carbonization chamber can be sucked into the riser pipe and the collecting pipe, avoiding too high pressure of the pollutants in the carbonization chamber, and further avoiding the escape of pollutants.

[0004] Since the production operations such as coal charging, coke pushing and coke quenching are the main periods when pollutants escape, therefore, the scheme of increasing the volume of the carbonization chamber to reduce the operation times and frequencies is an inevitable choice in the coking industry design. However, with the increase of the volume of the carbonization chamber, during the coking process, the generation amount of the raw gas also increases significantly, and a large amount of high-temperature raw gas will also cause a significant increase in the internal pressure of the carbonization chamber, resulting in a weakened control effect of the high-pressure ammonia water spraying and the gas blower on the pressure in the carbonization chamber and unable to meet the environmental protection requirements, or even unable to control the pressure in the carbonization chamber, thus leading to the escape of pollutants during the coal charging and coking processes. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art, and provides a coke oven riser pipe for regulating the pressure in the carbonization chamber, which can control the pressure in the carbonization chamber, thereby reducing the emission of pollutants in the carbonization chamber, and can improve the pressure control effect on a large-volume carbonization chamber, thereby more effectively reducing the emission of pollutants in the large-volume carbonization chamber.

[0006] To achieve the object of the present invention, a coke oven riser pipe for regulating the pressure in the carbonization chamber is provided, which includes a riser pipe body with two ends respectively connected to the carbonization chamber and the gas collecting pipe. An air intake structure is provided on the peripheral wall of the riser pipe body, and the air intake structure is used to convey gas into the riser pipe body in a direction away from the end where the riser pipe body is connected to the carbonization chamber, so as to generate a negative pressure at the end where the riser pipe body is connected to the carbonization chamber within the riser pipe body.

[0007] Preferably, the air intake structure includes an air intake port and an air intake channel. Among them, the air intake port is opened on the peripheral wall of the riser pipe body, and one end of the air intake port is communicated with a gas source for providing the gas;

[0008] The air intake channel is arranged in the peripheral wall of the riser pipe body, one end of the air intake channel is communicated with the other end of the air intake port, the other end is communicated with the inside of the riser pipe body, and the axis of the air intake channel is inclined relative to the radial plane of the riser pipe body in a direction away from the end where the riser pipe body is connected to the carbonization chamber, and has a first preset angle with the radial plane of the riser pipe body.

[0009] Preferably, the first preset angle is 15° - 75°.

[0010] Preferably, the axis of the air intake channel is inclined towards the inner peripheral wall of the riser pipe body relative to a specified axial plane of the riser pipe body, and the axis of the air intake channel has a second preset angle with the specified axial plane;

[0011] The specified axial plane is an axial plane that intersects with the outer end of the axis of the air intake channel on the peripheral wall of the riser pipe body.

[0012] Preferably, the second preset angle is 15° - 75°.

[0013] Preferably, there are multiple air intake structures, and the multiple air intake structures are distributed at intervals along the circumferential direction of the riser pipe body on the peripheral wall of the riser pipe body.

[0014] Preferably, the coke oven riser pipe includes multiple groups of air inlet structure groups, each group of the air inlet structure groups includes multiple of the air inlet structures, and the multiple groups of the air inlet structure groups are spaced apart along the extending direction of the riser pipe body on the peripheral wall of the riser pipe body.

[0015] Preferably, an air inlet nozzle is arranged in the air inlet channel, the air inlet nozzle is used for pressurizing the gas passing through the air inlet channel, and the air inlet nozzle is detachably arranged in the air inlet channel so as to be able to replace the air inlet nozzles with different flow rates.

[0016] Preferably, the gas is a combustible gas.

[0017] Preferably, the combustible gas includes any one or more of coke oven gas, blast furnace gas, hydrogen and ammonia.

[0018] The present invention has the following beneficial effects:

[0019] The coke oven riser pipe for regulating the pressure of the carbonization chamber provided by the present invention conveys gas into the riser pipe body in a direction away from the end where the riser pipe body is connected to the carbonization chamber by means of the air inlet structure arranged on the peripheral wall of the riser pipe body, so as to be able to generate a negative pressure at the end where the riser pipe body is connected to the carbonization chamber in the riser pipe body, thereby being able to suck pollutants such as gas and dust containing tar substances generated in the carbonization chamber during the coal charging process, and pollutants such as raw gas generated in the carbonization chamber during the coking process into the riser pipe body, so as to reduce the pressure of the pollutants in the carbonization chamber, and further be able to control the pressure in the carbonization chamber and reduce the escape of pollutants in the carbonization chamber. And, since the air inlet structure is directly arranged on the riser pipe body, compared with the way of generating a negative pressure in the gas collecting pipe by a gas blower and generating a negative pressure in the riser pipe by spraying high-pressure ammonia water at the bridge pipe where the riser pipe is connected to the gas collecting pipe, a negative pressure can be generated more directly in the riser pipe body, and a negative pressure can be generated at a position closer to the carbonization chamber. Therefore, the coke oven riser pipe for regulating the pressure of the carbonization chamber provided by the present invention can improve the pressure control effect on the large-volume carbonization chamber, thereby more effectively reducing the escape of pollutants in the large-volume carbonization chamber. Description of the Drawings

[0020] Figure 1 It is the front view structural schematic diagram of the coke oven riser pipe for regulating the pressure of the carbonization chamber provided by the embodiment of the present invention;

[0021] Figure 2 It is the structural schematic diagram of the bridge pipe part in the riser pipe body of the coke oven riser pipe for regulating the pressure of the carbonization chamber provided by the embodiment of the present invention;

[0022] Figure 3Schematic top view of the main pipe part in the riser main body of the coke oven riser for regulating the pressure in the carbonization chamber provided by the embodiments of the present invention;

[0023] Explanation of reference numerals:

[0024] 1 - Riser main body; 11 - Housing; 12 - Refractory lining; 2 - Air intake structure; 21 - Air intake port; 22 - Air intake channel. Detailed implementation manners

[0025] To enable those skilled in the art to better understand the technical solutions of the present invention, the coke oven riser for regulating the pressure in the carbonization chamber provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0026] As Figures 1-3 shown, this embodiment provides a coke oven riser for regulating the pressure in the carbonization chamber, including a riser main body 1 whose two ends are respectively connected to the carbonization chamber and the gas collecting pipe. An air intake structure 2 is provided on the peripheral wall of the riser main body 1. The air intake structure 2 is used to convey gas into the riser main body 1 in a direction away from the end where the riser main body 1 is connected to the carbonization chamber, so as to generate a negative pressure at the end where the riser main body 1 is connected to the carbonization chamber within the riser main body 1.

[0027] The coke oven riser for regulating the pressure in the carbonization chamber provided by this embodiment, by means of the air intake structure 2 provided on the peripheral wall of the riser main body 1, conveys gas into the riser main body 1 in a direction away from the end where the riser main body 1 is connected to the carbonization chamber, so as to generate a negative pressure at the end where the riser main body 1 is connected to the carbonization chamber within the riser main body 1. Thus, during the coal charging process, pollutants such as gas and dust containing tar-like substances generated in the carbonization chamber, and during the coking process, pollutants such as raw gas generated in the carbonization chamber can be sucked into the riser main body 1 to reduce the pressure of pollutants in the carbonization chamber, and further the pressure in the carbonization chamber can be controlled to reduce the escape of pollutants in the carbonization chamber. And, since the air intake structure 2 is directly provided on the riser main body 1, compared with the method of generating a negative pressure in the gas collecting pipe through a gas blower and generating a negative pressure in the riser by spraying high-pressure ammonia water at the bridge pipe where the riser is connected to the gas collecting pipe, a negative pressure can be generated more directly in the riser main body 1, and a negative pressure can be generated at a position closer to the carbonization chamber. Therefore, the coke oven riser for regulating the pressure in the carbonization chamber provided by this embodiment can improve the pressure control effect on a large-volume carbonization chamber, and thus more effectively reduce the escape of pollutants in the large-volume carbonization chamber.

[0028] In this embodiment, when gas is transported into the riser main body 1 through the air intake structure 2 to generate a negative pressure at one end of the riser main body 1 connected to the carbonization chamber within the riser main body 1 and suck and divert the pollutants in the carbonization chamber into the riser main body 1, a negative pressure can also be generated in the collecting pipe by the gas blower at the same time, and high-pressure ammonia water can be sprayed at the bridge pipe connecting the riser and the collecting pipe to generate a negative pressure in the riser, so as to further control the pressure in the carbonization chamber, further reduce the escape of pollutants in the carbonization chamber, and further improve the pressure control effect on the large-volume carbonization chamber, thereby more effectively reducing the escape of pollutants in the large-volume carbonization chamber.

[0029] In this embodiment, the air intake structure 2 includes an air intake 21 and an air intake passage 22. Among them, the air intake 21 is opened on the peripheral wall of the riser main body 1, and one end thereof is communicated with a gas source for providing gas; the air intake passage 22 is arranged in the peripheral wall of the riser main body 1, one end thereof is communicated with the other end of the air intake 21, and the other end is communicated with the inside of the riser main body 1. And the axis of the air intake passage 22 is inclined relative to the radial plane of the riser main body 1 away from the end of the riser main body 1 connected to the carbonization chamber, and has a first preset angle (such as Figure 1 the angle α shown).

[0030] The gas provided by the gas source first enters the air intake passage 22 through the air intake 21, and then enters the riser main body 1 after passing through the air intake passage 22. By inclining the axis of the air intake passage 22 relative to the radial plane of the riser main body 1 away from the end of the riser main body 1 connected to the carbonization chamber, so that after the gas enters the riser main body 1 through the air intake passage 22, it can flow away from the end of the riser main body 1 connected to the carbonization chamber, thereby being able to drive the gas in the riser main body 1, which is located near the end of the riser main body 1 connected to the carbonization chamber relative to the air outlet of the air intake passage 22, to flow upward, and further being able to generate a negative pressure at the end of the riser main body 1 connected to the carbonization chamber.

[0031] Optionally, the first preset angle is 15°-75°.

[0032] Specifically, as Figures 1-3 shown, in this embodiment, the riser main body 1 includes a shell 11 and a refractory lining 12 covering the inner wall of the shell 11. Among them, the air intake 21 penetrating through its thickness is opened on the shell 11, and the air intake passage 22 penetrating through its thickness is opened in the refractory lining 12. The refractory lining 12 is used to enable the riser main body 1 to work at the high temperature of the carbonization chamber. However, in practical applications, the form of the riser main body 1 is not limited to this.

[0033] Optionally, the refractory lining 12 can be formed by laying shaped refractory materials such as refractory bricks on the inner wall of the housing 11, or can be formed by casting unshaped refractory materials on the inner wall of the housing 11.

[0034] In this embodiment, the axis of the intake passage 22 is inclined towards the inner peripheral wall of the riser body 1 with respect to a specified axial plane of the riser body 1, and there is a second preset angle (such as Figure 3 the angle β shown) between the axis of the intake passage 22 and the specified axial plane; the specified axial plane is an axial plane that intersects the outer end of the axis of the intake passage 22 on the peripheral wall of the riser body 1.

[0035] By inclining the axis of the intake passage 22 towards the inner peripheral wall of the riser body 1 with respect to the axial plane that intersects the outer end of the axis of the intake passage 22 on the peripheral wall of the riser body 1, so that after the gas enters the riser body 1 through the intake passage 22, it can flow towards the inner peripheral wall of the riser body 1, thereby enabling the gas to rotate and rise in a spiral shape during the rising process.

[0036] Such a design is because when the pollutants in the carbonization chamber are suction-guided into the riser body 1, the pollutants will be mixed with fine pulverized coal particles. These fine pulverized coal particles will enter the gas collector connected to the riser body 1 along with the rising of the gas in the riser body 1 and settle in the gas collector together with the condensed tar, which brings the burden of solid particle separation to the subsequent further deep processing of the tar. Moreover, these fine pulverized coal particles will also adsorb on the inner peripheral wall of the riser body 1 during the process of flowing through the riser body 1 with the gas, which is likely to cause blockage of the riser body 1. In addition, part of the tar condensed in the riser body 1 in the middle and early stages of coking, and the graphite generated by the cracking of a large amount of hydrocarbon gases at high temperature in the late stage of coking are both likely to adsorb on the inner peripheral wall of the riser body 1, resulting in blockage of the riser body 1.

[0037] After the gas enters the riser main body 1 through the intake passage 22, it can flow toward the direction close to the peripheral wall of the riser main body 1 and rotate upward in a spiral shape. On the one hand, the gas rotating upward can improve the ability to drive the gas in the riser main body 1, which is located at the end of the riser main body 1 close to the connection with the carbonization chamber relative to the outlet of the intake passage 22, to flow upward, so that a negative pressure that is more likely to be generated at the end of the riser main body 1 where the riser main body 1 is connected to the carbonization chamber can be formed in the riser main body 1, and thus the pressure in the carbonization chamber can be controlled more effectively, and the emission of pollutants in the carbonization chamber can be further reduced. On the other hand, in order to utilize the centrifugal force generated by the spiral rotation of the gas, the fine pulverized coal particles entering the riser main body 1 are thrown onto the inner wall of the riser main body 1, so that the fine pulverized coal particles can fall back into the carbonization chamber under the action of their own gravity, thereby reducing the number of fine pulverized coal particles entering the gas collector and further reducing the burden of subsequent further deep processing of tar. On the further hand, the gas flowing to the inner peripheral wall of the riser main body 1 can also be used to purge the inner peripheral wall of the riser main body 1 to blow and wash down the substances adsorbed on the inner wall of the riser main body 1, and these substances blown and washed down will also fall back into the carbonization chamber, thus avoiding the blockage of the riser main body 1.

[0038] Optionally, the second preset angle is 15° - 75°.

[0039] In this embodiment, there are multiple intake structures 2, and the multiple intake structures 2 are distributed at intervals along the circumferential direction of the riser main body 1 on the peripheral wall of the riser main body 1. By arranging multiple intake structures 2 at intervals in the circumferential direction of the riser main body 1, the gas can enter the riser main body 1 from multiple locations in the circumferential direction of the riser main body 1, so that the pressure in the carbonization chamber can be controlled more effectively, and the emission of pollutants in the carbonization chamber can be further reduced.

[0040] Specifically, when each intake structure 2 can make the gas flow away from the end of the riser main body 1 connected to the carbonization chamber after entering the riser main body 1, it can drive the gas on the inner circumference of the riser main body 1 upward, and more gas located closer to the end of the riser main body 1 connected to the carbonization chamber relative to the outlet of the intake passage 22 to flow upward. As a result, a greater negative pressure can be generated at the end of the riser main body 1 connected to the carbonization chamber, thereby enabling more effective control of the pressure in the carbonization chamber and further reducing the escape of pollutants in the carbonization chamber. Additionally, when each intake structure 2 can also make the gas flow toward the inner wall of the riser main body 1 after entering the riser main body 1, the spiral shape formed by the gas in the riser main body 1 can be made more stable in the circumferential direction. On the one hand, it can more effectively control the pressure in the carbonization chamber and further reduce the escape of pollutants in the carbonization chamber. On the other hand, it can make the centrifugal force generated by the gas rotating upward in a spiral more stable, thereby improving the effect of throwing the fine pulverized coal particles entering the riser main body 1 onto the inner wall of the riser main body 1, further reducing the burden of subsequent further deep processing of tar. On the third hand, it can improve the purging effect on the substances adsorbed on the inner wall of the riser main body 1, further avoiding the blockage of the riser main body 1.

[0041] Preferably, a plurality of intake structures 2 are evenly spaced along the circumferential direction of the riser main body 1 on the circumferential wall of the riser main body 1 to improve the uniformity of gas flow on the inner circumference of the riser main body 1.

[0042] Optionally, the number of intake structures 2 is greater than or equal to 3. Preferably, the number of intake structures 2 is 4, 6, or 8.

[0043] In this embodiment, the coke oven riser includes multiple groups of intake structure groups, and each group of intake structure groups includes a plurality of intake structures 2. The multiple groups of intake structure groups are spaced along the extending direction of the riser main body 1 on the circumferential wall of the riser main body 1.

[0044] Specifically, such as Figure 1As shown, in this embodiment, in the extending direction of the riser main body 1, the riser main body 1 includes a main pipe portion and a bridge pipe portion. Among them, the main pipe portion is vertically connected to the carbonization chamber, and both ends of the bridge pipe portion are respectively connected to the main pipe portion and the gas collecting pipe, and the bridge pipe portion is horizontally arranged, so that the riser main body 1 is bent at the connection between the bridge pipe portion and the main pipe portion. By providing an intake structure group including a plurality of intake structures 2 on both the main pipe portion and the bridge pipe portion, the pollutants entering the main pipe portion can be smoothly sucked into the bridge pipe portion by the gas, avoiding the retention of pollutants in the main pipe portion and causing the pressure in the main pipe portion to increase, thereby improving the working stability of the coke oven riser. Moreover, since the length of the main pipe portion is relatively long, by arranging multiple groups of intake structure groups in the axial direction of the main pipe portion, the pollutants entering the main pipe portion can flow smoothly in the main pipe portion, and the pressure increase in the main pipe portion can also be avoided, thereby improving the working stability of the coke oven riser. However, in practical applications, the form of the riser main body 1 is not limited to this.

[0045] In this embodiment, an intake nozzle is provided in the intake passage 22. The intake nozzle is used to pressurize the gas passing through the intake passage 22, and the intake nozzle is detachably arranged in the intake passage 22 to be able to replace intake nozzles with different flow rates.

[0046] By using the intake nozzle to pressurize the gas passing through the intake passage 22, when the gas enters the riser main body 1, it can have a greater flow rate. According to Bernoulli's principle and the principle of conservation of momentum, it can drive more gas in the riser main body 1, which is located closer to the end where the riser main body 1 is connected to the carbonization chamber relative to the outlet of the intake passage 22, to flow upward, and can drive these gases to flow upward at a faster speed. Thus, a greater negative pressure can be generated at the end where the riser main body 1 is connected to the carbonization chamber in the riser main body 1, and the speed of generating the negative pressure can be faster. Furthermore, it can more effectively control the pressure in the carbonization chamber and further reduce the escape of pollutants in the carbonization chamber. And it can make the spirally rotating upward gas generate a greater centrifugal force, thereby improving the effect of throwing the fine pulverized coal particles entering the riser main body 1 onto the inner wall of the riser main body 1, further reducing the burden of subsequent further deep processing of tar, and improving the purging effect of the substances adsorbed on the inner wall of the riser main body 1, further avoiding the blockage of the riser main body 1. Moreover, by replacing intake nozzles with different flow rates, it can adapt to different carbonization chamber pressures, thereby improving the adaptability of controlling the carbonization chamber pressure.

[0047] Optionally, the intake nozzle can be a nozzle. The nozzle is arranged in the intake passage 22 and has a plurality of spray holes with diameters smaller than the inner diameter of the intake passage 22. The gas entering the intake passage 22 through the intake port 21 will enter the plurality of spray holes to pressurize the gas passing through the intake passage 22 through the spray holes.

[0048] Optionally, when the refractory lining 12 is formed by casting amorphous refractory materials, an air inlet channel 22 capable of fixing the nozzle can be reserved during the casting process; when the refractory lining 12 is formed by laying refractory bricks, replaceable refractory bricks with different opening specifications can be used to facilitate the adjustment and replacement of the nozzle.

[0049] In addition, a maintenance hole (not shown in the figure) that is connected to the air intake passage 22 and can be opened and closed can be opened on the shell 11 to facilitate adjustment and replacement of the nozzle during production. Specifically, when the nozzle needs to be replaced, the inspection hole is opened to take out the nozzle to be replaced in the air intake passage 22, and then the replaced nozzle is placed in the air intake passage 22. Finally, the inspection hole is closed to keep the nozzle in the air intake passage 22.

[0050] In this embodiment, the gas is a combustible gas. Such a design is due to the fact that in the process of loading coal into the carbonization chamber, especially in the process of loading coal in the ramming coke oven, the air in the carbonization chamber will be displaced by the coal or coal cakes and enter the riser body 1, and the oxygen in the displaced air will exist in the coal gas, resulting in the oxygen content in the coal gas exceeding the standard (the oxygen content in the coal gas is greater than 1%), which brings safety hazards to the subsequent treatment of the coal gas. By transporting combustible gas into the riser body 1, the combustible gas can burn with the oxygen in the displaced air in the riser body 1, and react with the oxygen to produce an oxidation reaction, thereby consuming the oxygen in the displaced air to reduce the oxygen content in the coal gas, thereby improving the safety of the subsequent treatment of the coal gas.

[0051] Optionally, the combustible gas includes any one or more of coke oven gas, blast furnace gas, hydrogen and ammonia.

[0052] Specifically, the air inlet 21 can be connected to a gas source for providing combustible gas through an introduction pipe. For example, when the combustible gas is coke oven gas, the two ends of the introduction pipe can be connected to the coke oven gas main pipeline and the air inlet 21 respectively; when the combustible gas is blast furnace gas, the two ends of the introduction pipe can be connected to the blast furnace gas main pipeline and the air inlet 21 respectively; when the combustible gas is hydrogen, the two ends of the introduction pipe can be connected to the hydrogen storage cabinet and the air inlet 21 respectively; when the combustible gas is ammonia, the two ends of the introduction pipe can be connected to the liquid ammonia storage tank and the air inlet 21 respectively.

[0053] Optionally, the inlet pipe can be laid along the coke oven riser operating platform.

[0054] In this embodiment, the riser pipe of the coke oven further includes a control system, which includes a pressure measuring unit and a control unit. Among them, the pressure measuring unit is used to detect the pressure in the carbonization chamber, and the control unit is used to obtain the pressure parameter in the carbonization chamber measured by the pressure measuring unit, and control the flow rate of the gas transported from the intake passage 22 into the carbonization chamber according to the pressure parameter. Through the control system, the riser pipe of the coke oven can automatically control the pressure in the carbonization chamber during the entire coking cycle of the coke oven, so as to improve the automation of the pressure control of the riser pipe on the pressure in the carbonization chamber.

[0055] For example, when the pressure measuring unit detects an increase in the pressure in the carbonization chamber, the control unit can control the flow rate of the gas transported from the intake passage 22 into the carbonization chamber to increase, so as to generate a greater negative pressure at one end of the riser pipe body 1 connected to the carbonization chamber within the riser pipe body 1, so as to improve the control of the pressure in the carbonization chamber by the riser pipe body 1.

[0056] Optionally, the control unit includes a regulating valve and a receiving unit. Among them, the regulating valve can be arranged on the inlet pipe to adjust the opening of the inlet pipe, or can be arranged in the air inlet 21 to adjust the opening of the air inlet 21. The receiving unit is electrically connected to the regulating valve and is used to obtain the pressure parameter in the carbonization chamber measured by the pressure measuring unit, and adjust the regulating valve according to the pressure parameter to adjust the opening of the inlet pipe or the opening of the air inlet 21, so as to control the flow rate of the gas transported from the intake passage 22 into the carbonization chamber.

[0057] To sum up, the riser pipe of the coke oven provided in this embodiment for regulating the pressure in the carbonization chamber can control the pressure in the carbonization chamber, thereby reducing the escape of pollutants in the carbonization chamber, and can improve the pressure control effect on the large-volume carbonization chamber, thereby more effectively reducing the escape of pollutants in the large-volume carbonization chamber.

[0058] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention. However, the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. A coke oven riser pipe for regulating the pressure in the carbonization chamber, comprising a riser pipe body with two ends respectively connected to the carbonization chamber and the collecting pipe, Characterized in that, An air inlet structure is provided on the peripheral wall of the riser pipe body, and the air inlet structure is used to convey gas into the riser pipe body in a direction away from the end where the riser pipe body is connected to the carbonization chamber, so as to be able to generate a negative pressure at the end where the riser pipe body is connected to the carbonization chamber within the riser pipe body; The air inlet structure includes an air inlet and an air inlet channel. Among them, the air inlet is opened on the peripheral wall of the riser pipe body, and one end thereof is communicated with a gas source for providing the gas; the air inlet channel is arranged in the peripheral wall of the riser pipe body, one end thereof is communicated with the other end of the air inlet, and the other end is communicated with the inside of the riser pipe body; The riser pipe body includes a shell and a refractory lining covering the inner wall of the shell. Among them, the air inlet penetrating through its thickness is opened on the shell, and the air inlet channel penetrating through its thickness is opened in the refractory lining; The axis of the air inlet channel is inclined towards the inner peripheral wall of the riser pipe body with respect to a specified axial plane of the riser pipe body, and there is a second preset angle between the axis of the air inlet channel and the specified axial plane; The specified axial plane is an axial plane intersecting with the outer end of the axis of the air inlet channel on the peripheral wall of the riser pipe body.

2. The coke oven riser pipe for regulating the pressure in the carbonization chamber according to claim 1, Characterized in that, The axis of the air inlet channel is inclined away from the end where the riser pipe body is connected to the carbonization chamber with respect to the radial plane of the riser pipe body, and there is a first preset angle between the axis of the air inlet channel and the radial plane of the riser pipe body.

3. The coke oven riser pipe for regulating the pressure in the carbonization chamber according to claim 2, Characterized in that, The first preset angle is 15° - 75°.

4. The coke oven riser pipe for regulating the pressure in the carbonization chamber according to claim 1, Characterized in that, The second preset angle is 15° - 75°.

5. The coke oven riser pipe for regulating the pressure in the carbonization chamber according to any one of claims 2 - 4, Characterized in that, The air inlet structure includes a plurality of air inlet structures, and the plurality of air inlet structures are distributed at intervals along the circumferential direction of the riser pipe body on the peripheral wall of the riser pipe body.

6. The coke oven riser pipe for regulating the pressure in the carbonization chamber according to claim 5, Characterized in that, The coke oven riser pipe includes multiple groups of air inlet structure groups, each group of air inlet structure groups includes a plurality of the air inlet structures, and the multiple groups of air inlet structure groups are distributed at intervals along the extending direction of the riser pipe body on the peripheral wall of the riser pipe body.

7. The coke oven riser pipe for regulating the pressure in the carbonization chamber according to any one of claims 2 - 4, Characterized in that, An air inlet nozzle is arranged in the air inlet channel, and the air inlet nozzle is used to boost the gas passing through the air inlet channel, and the air inlet nozzle is detachably arranged in the air inlet channel so as to be able to replace the air inlet nozzles with different flow rates.

8. The coke oven riser pipe for adjusting the pressure in the carbonization chamber according to any one of claims 1-4, characterized in that, the gas is a combustible gas.

9. The coke oven riser pipe for adjusting the pressure in the carbonization chamber according to claim 8, characterized in that, the combustible gas includes any one or more of coke oven gas, blast furnace gas, hydrogen and ammonia.

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