A dry quenching emission gas co treatment device

Abstract

The utility model relates to dry quenching circulating gas diffusion gas purification technical field, the utility model provides a kind of dry quenching diffusion gas CO treatment device, it includes first heat exchanger, first catalyst layer and instrument.The utility model further includes motor, gear two and deflector.In the utility model, flue gas enters flue from gas inlet, initial temperature 100 DEG C, through first heat exchanger cold end and hot flue gas heat exchange rises to 200 DEG C, again through second heat exchanger cold end rises to 260 DEG C, flue gas enters first catalyst layer, temperature rises to 360 DEG C, subsequently through first heat exchanger hot end drops to 260 DEG C, enters second catalyst layer, temperature rises to 360 DEG C after reaction again, through second heat exchanger hot end drops to 100~150 DEG C, CO concentration reduces to reach standard, discharge through gas outlet, through the above technical scheme, solve the technical problem that catalytic oxidation generated heat cannot be fully recovered in prior art.

Description

Technical Field

[0001] This utility model relates to the field of dry quenching coke circulating gas venting technology, specifically, to a CO treatment device for dry quenching coke venting gas. Background Technology

[0002] With increasing environmental awareness and demands, the pollution caused by wet quenching technology in the coking industry is becoming increasingly prominent. Dry quenching, a method that uses inert gas to cool red-hot coke, involves charging the coke (approximately 1000°C) from the top of the dry quenching furnace. The coke exchanges heat with cold inert gas blown in by a circulating fan within the furnace's cooling chamber. Compared to traditional wet quenching, dry quenching offers advantages such as improved coke quality, recovery of waste heat from the red-hot coke, and lower environmental pollution, leading to its widespread adoption.

[0003] According to a public announcement (publication number: CN118341250A), a dry quenching coke circulating gas venting gas purification and waste heat utilization system and its treatment method include a desulfurization unit, a dust removal unit, a venting gas induced draft fan, and a chimney. Its CO removal unit includes a CO catalytic oxidation device and a waste heat recovery device. The CO catalytic oxidation device is pre-equipped with a flue gas heating device; the waste heat recovery device forms a waste heat recovery loop through a heat medium transportation device, pipelines, and heat users.

[0004] The device only has a waste heat recovery unit at the flue gas outlet, which leads to a significant risk of catalyst sintering. Although it regulates the flue gas volume when the CO concentration in the flue gas is too high through an electric regulating valve, it only diverts a portion of the flue gas to the bypass path, which poses a risk of exceeding emission standards. Therefore, we propose a CO treatment device for dry quenching vent gas. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a CO treatment device for dry quenching coke vent gas, which solves the technical problem that the heat generated by catalytic oxidation cannot be fully recovered in the prior art.

[0006] According to one aspect, at least one embodiment of the present invention provides a CO treatment device for dry quenching coke vent gas, comprising: a flue, wherein an air inlet is provided at the bottom of the flue, an air outlet is provided at the top of the flue, and a treatment mechanism is provided inside the flue.

[0007] The treatment mechanism includes a first heat exchanger fixedly extending through the circumference of the flue, a second heat exchanger fixedly extending through the circumference of the flue, a first catalyst layer fixedly connected inside the flue, and a second catalyst layer fixedly connected inside the flue.

[0008] For example, in at least one embodiment of the present invention, a CO treatment device for dry quenching coke vent gas is provided, which further includes: a first heat exchanger cold end is provided at one end of the first heat exchanger, and a first heat exchanger hot end is provided at the other end of the first heat exchanger. The purpose is that the first heat exchanger cold end receives the low-temperature medium, and the first heat exchanger hot end transfers the heat of the high-temperature medium to the cold end, thereby achieving the effect of temperature regulation or energy recovery and improving the thermal efficiency of the system.

[0009] The cold end of the first heat exchanger is located at the flue gas inlet, and the hot end of the first heat exchanger is located on top of the second catalyst layer. The purpose of this heat transfer is to effectively reduce energy consumption and improve the overall thermal efficiency of the system, ensuring that the catalytic process is carried out at a suitable temperature.

[0010] The second heat exchanger has a cold end at one end and a hot end at the other end. The purpose of the second heat exchanger is to receive heat from the low-temperature medium in the system at the cold end and transfer the heat to the medium or part of the system that needs to be heated at the hot end.

[0011] The cold end of the second heat exchanger is located between the cold end of the first heat exchanger and the first catalyst layer, and the hot end of the second heat exchanger is located between the first catalyst layer and the second catalyst layer. The purpose of this is to effectively utilize thermal energy, maintain the optimal temperature range of the catalytic reaction, improve reaction efficiency, and reduce energy consumption.

[0012] The first and second catalyst layers are filled with honeycomb precious metal catalysts. Instruments are installed at the rear ends of the first heat exchanger, the second heat exchanger, the first catalyst layer, and the second catalyst layer. The purpose of these instruments is to monitor and adjust the operating status of the entire system in real time. The instruments can measure key parameters such as temperature, pressure, and flow rate to ensure that each part is operating in the best condition and to detect any potential faults or abnormalities in a timely manner.

[0013] According to another aspect, at least one embodiment of this utility model also provides a CO treatment device for dry quenching coke vent gas, comprising: a flow guiding mechanism disposed inside the flue, the flow guiding mechanism including a protective box, the protective box being fixedly connected to the circumferential surface of the flue, a motor being fixedly connected inside the protective box, a rotating shaft being fixedly connected to the output end of the motor, a gear one being fixedly connected to the circumferential surface of the rotating shaft, a gear two being rotatably connected inside the flue, and a flow guide plate being fixedly connected inside the gear two. The purpose is to ensure uniform distribution of flue gas, avoid local airflow obstruction or unevenness, thereby improving heat exchange efficiency and ensuring the stability and safety of system operation.

[0014] For example, in at least one embodiment of the present invention, a CO treatment device for dry quenching coke vent gas is provided, which further includes: a guide hole is provided on the top of the guide plate, and the circumferential surface of the first gear meshes with the circumferential surface of the second gear, the purpose of which is to ensure that the rotation of the first gear can drive the second gear to rotate.

[0015] The number of guide holes is set to several and evenly distributed on the top of the guide plate. The circumferential surface of the flue is provided with a rotating groove. The purpose is to ensure the uniform distribution of airflow in the flue and avoid excessively strong or weak airflow in local areas, thereby improving heat exchange efficiency.

[0016] The guide plate is located directly above the cold end of the second heat exchanger, and the guide hole is located directly below the first catalyst layer. The purpose is to ensure the uniformity of the catalytic reaction, improve the utilization efficiency of the catalyst, and ensure the effective transfer and control of heat during the reaction process.

[0017] The beneficial effects of the embodiments of this utility model are as follows:

[0018] In this invention, through the coordinated operation of components such as the first heat exchanger, the first catalyst layer, and instruments in the treatment mechanism, flue gas enters the flue through the inlet with an initial temperature of 100°C. After passing through the cold end of the first heat exchanger where it exchanges heat with the hot flue gas, its temperature rises to 200°C. Then, it passes through the cold end of the second heat exchanger, where its temperature rises to 260°C. The flue gas then enters the first catalyst layer, where CO is catalytically oxidized, releasing heat and raising its temperature to 360°C. After passing through the hot end of the first heat exchanger, its temperature drops to 260°C. It then enters the second catalyst layer, where it reacts again, raising its temperature to 360°C. Passing through the hot end of the second heat exchanger, its temperature drops to 100-150°C, reducing the CO concentration to the acceptable level. Finally, it is discharged through the outlet. This design achieves the effect of treating and discharging flue gas, effectively cooling it, reducing CO emissions, and improving environmental benefits.

[0019] In this invention, through the cooperation between the motor, gear 2, and guide plate of the flow guiding mechanism, after the motor is started, the motor drives the rotating shaft to rotate, which in turn drives gear 1 to rotate. Through the meshing of gear 1 and gear 2, gear 2 rotates and drives the guide plate to rotate. The flue gas is dispersed through the guide holes of the guide plate. This design achieves the effect of guiding the flue gas, ensuring full contact with the catalyst and improving the reaction efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0021] Figure 1 This is a structural schematic diagram of the overall three-dimensional appearance of the flue in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall three-dimensional front sectional view of the flue in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of a three-dimensional side sectional view of the flue in one embodiment of the present invention;

[0024] Figure 4 As one embodiment of this utility model Figure 3 A three-dimensional magnified structural diagram of A in the middle.

[0025] In the diagram: 1. Flue; 2. Inlet; 3. Outlet; 4. Treatment mechanism; 41. First heat exchanger; 42. Second heat exchanger; 43. First catalyst layer; 44. Second catalyst layer; 45. Instrument; 411. Cold end of the first heat exchanger; 412. Hot end of the first heat exchanger; 421. Cold end of the second heat exchanger; 422. Hot end of the second heat exchanger; 5. Flow guiding mechanism; 51. Protective box; 52. Motor; 53. Shaft; 54. Gear 1; 55. Gear 2; 56. Flow guide plate; 57. Flow guide hole; 58. Rotating groove. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0027] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] like Figures 1-4 As shown, it illustrates a CO treatment device for dry quenching flammable gas in one embodiment of the present invention, including: a flue 1, an air inlet 2 at the bottom of the flue 1, an air outlet 3 at the top of the flue 1, and a treatment mechanism 4 inside the flue 1.

[0033] The treatment mechanism 4 includes a first heat exchanger 41, which is fixedly connected to the circumferential surface of the flue 1. A second heat exchanger 42 is fixedly connected to the circumferential surface of the flue 1. A first catalyst layer 43 and a second catalyst layer 44 are fixedly connected to the inside of the flue 1.

[0034] In some examples, one end of the first heat exchanger 41 is provided with a cold end 411 and the other end of the first heat exchanger 41 is provided with a hot end 412. The purpose is that the cold end 411 receives the low-temperature medium, while the hot end 412 transfers the heat of the high-temperature medium to the cold end, thereby achieving the effect of temperature regulation or energy recovery and improving the thermal efficiency of the system.

[0035] The cold end 411 of the first heat exchanger is located at the air inlet 2 of the flue 1, and the hot end 412 of the first heat exchanger is located on top of the second catalyst layer 44. The purpose of this heat transfer is to effectively reduce energy consumption and improve the overall thermal efficiency of the system, and to ensure that the catalytic process is carried out at a suitable temperature.

[0036] The second heat exchanger 42 has a cold end 421 at one end and a hot end 422 at the other end. The purpose of the second heat exchanger 42 is that the cold end 421 receives heat from the low-temperature medium in the system, while the hot end 422 transfers the heat to the medium or part of the system that needs to be heated.

[0037] The cold end 421 of the second heat exchanger is located between the cold end 411 of the first heat exchanger and the first catalyst layer 43, and the hot end 422 of the second heat exchanger is located between the first catalyst layer 43 and the second catalyst layer 44. The purpose is to effectively utilize thermal energy, maintain the optimal temperature range of the catalytic reaction, improve reaction efficiency, and reduce energy consumption.

[0038] The first catalyst layer 43 and the second catalyst layer 44 are filled with honeycomb precious metal catalysts. Instruments 45 are installed at the rear ends of the first heat exchanger 41, the second heat exchanger 42, the first catalyst layer 43, and the second catalyst layer 44. The purpose of these instruments is to monitor and adjust the operating status of the entire system in real time. The instruments 45 can measure key parameters such as temperature, pressure, and flow rate to ensure that each part is operating in the best condition and to detect any potential faults or abnormalities in a timely manner.

[0039] For example, such as Figures 1-4 As shown, when the flue gas enters the flue duct 1 through the inlet 2 at a temperature of 100°C, it exchanges heat with the hot flue gas after passing through the cold end 411 of the first heat exchanger, and its temperature rises to 200°C. Then, it exchanges heat with the hot flue gas again after passing through the cold end 421 of the second heat exchanger, and its temperature rises to 260°C. The flue gas passes through the first catalyst layer 43, where CO in the flue gas is catalytically oxidized by the catalyst and releases heat, raising the flue gas temperature to 360°C. Then, it passes through the hot end 412 of the first heat exchanger, and its temperature drops to 260°C. After heat exchange, the flue gas enters the second catalyst layer 44, where its temperature rises to 360°C after the reaction. Then, it passes through the hot end 422 of the second heat exchanger, where its temperature drops to 100-150°C. After passing through the reaction gas, the CO concentration in the flue gas decreases and meets the standard, and it is then discharged through the outlet 3.

[0040] like Figures 1-4 As shown, this invention illustrates a CO treatment device for dry quenching flammable gas in another embodiment of the present invention, comprising: a flow guiding mechanism 5 disposed inside a flue 1, the flow guiding mechanism 5 including a protective box 51, the protective box 51 being fixedly connected to the circumferential surface of the flue 1, a motor 52 being fixedly connected inside the protective box 51, a rotating shaft 53 being fixedly connected to the output end of the motor 52, a gear 54 being fixedly connected to the circumferential surface of the rotating shaft 53, a gear 55 being rotatably connected inside the flue 1, and a flow guide plate 56 being fixedly connected inside the gear 55. The purpose of this device is to ensure uniform distribution of flue gas, avoid local airflow obstruction or unevenness, thereby improving heat exchange efficiency and ensuring the stability and safety of system operation.

[0041] In some examples, the top of the deflector plate 56 is provided with a deflector hole 57, and the circumferential surface of gear one 54 meshes with the circumferential surface of gear two 55. The purpose is to ensure that the rotation of gear one 54 can drive gear two 55 to rotate.

[0042] Several guide holes 57 are provided and evenly distributed on the top of the guide plate 56. A rotating groove 58 is provided on the circumferential surface of the flue 1. The purpose is to ensure that the airflow is evenly distributed in the flue 1 and to avoid the airflow being too strong or too weak in a local area, thereby improving the heat exchange efficiency.

[0043] The guide plate 56 is located directly above the cold end 421 of the second heat exchanger, and the guide hole 57 is located directly below the first catalyst layer 43. The purpose is to ensure the uniformity of the catalytic reaction, improve the utilization efficiency of the catalyst, and ensure the effective transfer and control of heat during the reaction process.

[0044] For example, such as Figures 1-4 As shown, when the flue 1 is working, the operator can start the motor 52. The output end of the motor 52 rotates, which drives the rotating shaft 53 to rotate. The rotating shaft 53 drives the gear 1 54 to rotate. Through the meshing of the gear 1 54 and the gear 2 55, the rotation of the gear 1 54 drives the gear 2 55 to rotate inside the flue 1 through the rotating groove 58. The rotation of the gear 2 55 drives the guide plate 56 to rotate. The flowing flue gas is dispersed through the guide holes 57 inside the guide plate 56, so that it can have more full contact with the catalyst.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A CO treatment device for dry quenching coke vent gas, characterized in that, include: A flue (1) is provided with an air inlet (2) at the bottom and an air outlet (3) at the top. A treatment mechanism (4) is provided inside the flue (1). The treatment mechanism (4) includes a first heat exchanger (41), which is fixedly connected to the circumferential surface of the flue (1). A second heat exchanger (42) is fixedly connected to the circumferential surface of the flue (1). A first catalyst layer (43) is fixedly connected to the inside of the flue (1). A second catalyst layer (44) is fixedly connected to the inside of the flue (1).

2. The CO treatment device for dry quenching coke vent gas according to claim 1, characterized in that, The first heat exchanger (41) has a cold end (411) at one end and a hot end (412) at the other end.

3. The CO treatment device for dry quenching coke vent gas according to claim 2, characterized in that, The cold end (411) of the first heat exchanger is located at the air inlet (2) of the flue (1), and the hot end (412) of the first heat exchanger is located on top of the second catalyst layer (44).

4. The CO treatment device for dry quenching flammable gas according to claim 3, characterized in that, The second heat exchanger (42) has a cold end (421) at one end and a hot end (422) at the other end.

5. The CO treatment device for dry quenching flammable gas according to claim 4, characterized in that, The second heat exchanger cold end (421) is located between the first heat exchanger cold end (411) and the first catalyst layer (43), and the second heat exchanger hot end (422) is located between the first catalyst layer (43) and the second catalyst layer (44).

6. The CO treatment device for dry quenching flammable gas according to claim 5, characterized in that, The first catalyst layer (43) and the second catalyst layer (44) are filled with honeycomb noble metal catalysts. Instruments (45) are provided at the rear ends of the first heat exchanger (41), the second heat exchanger (42), the first catalyst layer (43), and the second catalyst layer (44).

7. The CO treatment device for dry quenching flammable gas according to claim 6, characterized in that, The flue (1) is provided with a flow guiding mechanism (5), which includes a protective box (51). The protective box (51) is fixedly connected to the circumferential surface of the flue (1). A motor (52) is fixedly connected inside the protective box (51). A rotating shaft (53) is fixedly connected to the output end of the motor (52). A gear (54) is fixedly connected to the circumferential surface of the rotating shaft (53). A gear (55) is rotatably connected inside the flue (1). A flow guide plate (56) is fixedly connected inside the gear (55).

8. The CO treatment device for dry quenching flammable gas according to claim 7, characterized in that, The top of the guide plate (56) is provided with a guide hole (57), and the circumferential surface of the first gear (54) meshes with the circumferential surface of the second gear (55).

9. A CO treatment device for dry quenching flammable gas according to claim 8, characterized in that, The number of the guide holes (57) is set to several and is evenly distributed on the top of the guide plate (56). The circumferential surface of the flue (1) is provided with a rotating groove (58).

10. A CO treatment device for dry quenching flammable gas according to claim 9, characterized in that, The guide plate (56) is located directly above the cold end (421) of the second heat exchanger, and the guide hole (57) is located directly below the first catalyst layer (43).

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