A vertical ring-shaped one-step coke oven and system and method

Abstract

The present invention discloses a vertical annular one-step coking oven, system and method. The coking oven includes a furnace body, and a raw material inlet, an activated coke outlet, a flue gas outlet and a steam inlet are arranged on the furnace body; a carbonization section, an activation section and a cooling section are sequentially arranged in the furnace body from top to bottom; both the carbonization section and the activation section include a barrel core flue, a material channel and an external flue which are sequentially arranged from inside to outside; the lower ends of the barrel core flue and the external flue are both communicated with the flue gas outlet; a plurality of spiral partitions are arranged in the material channel from top to bottom, and the plurality of spiral partitions form a spiral downward feeding channel in the material channel; the top of the material channel is communicated with the raw material inlet, and the bottom is communicated with the activated coke outlet; a part of the inner side of the material channel located in the carbonization section is communicated with the barrel core flue, and the outer side is communicated with the external flue. The vertical annular one-step coking oven of the present invention can ensure that the material is continuously turned and agitated during the falling process, improving the carbonization and activation effects and uniformity.

Description

Technical Field

[0001] The present invention belongs to the technical field of material preparation, and particularly relates to a vertical ring-shaped one-step coking furnace, a system and a method thereof. Background Art

[0002] Coal is both a fuel and a low-cost and easily available raw material for preparing carbon materials. Currently, the activated coke used for desulfurization and denitrification is prepared from coal as the raw material. The existing carbonization and activation equipment for preparing activated coke are horizontal rotary furnaces and vertical Slep furnaces. The horizontal rotary furnace realizes material turnover by rotating the furnace body at a certain angle, so as to realize material carbonization and contact activation with the activator. However, the horizontal rotary furnace has problems such as large floor area, high investment cost, and low temperature control accuracy. The vertical Slep furnace is arranged with staggered material channels and flue gas channels made of refractory materials. Both the flue gas channels and the material channels are thin-layer cuboid channels. The material channels are in a compacted state during the falling process, and cannot be turned over and agitated, which has a great impact on the carbonization and activation effects, resulting in large fluctuations in product quality and poor equipment flexibility. At the same time, the material channel size of the vertical Slep furnace is relatively small, resulting in an oversized equipment volume and a large floor area.

[0003] The material channels and flue gas channels of the vertical Slep furnace are arranged in a staggered manner, the furnace body is arranged in a square shape, both the flue gas channels and the material channels are thin-layer cuboid channels, the width of the material channels is small, and the cross-section of the refractory bricks accounts for a large proportion, resulting in a relatively large furnace body size; the material channels are in a compacted state during the falling process, and cannot be turned over and agitated, which has a great impact on the carbonization and activation effects, resulting in large fluctuations in product quality and poor equipment flexibility; due to insufficient activation, the activation time is too long to ensure product quality, and the output of the coking furnace is low; the generation of activation steam in the vertical Slep furnace is achieved by switching the regenerator bricks in the left and right combustion chambers, and the process is complex. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a vertical ring-shaped one-step coking furnace. By arranging a ring-shaped material channel in the carbonization and activation section of the furnace body, and arranging a plurality of spiral partition plates in the material channel to form a spiral downward material channel, the raw coal particles can realize one-step carbonization and activation in the furnace body, and can ensure that the material is continuously turned over and agitated during the falling process, improve the carbonization and activation effects and uniformity, reduce the preparation time, and increase the output of the coking furnace.

[0005] Another object of the present invention is to provide a coking system.

[0006] Still another object of the present invention is to provide a coking method.

[0007] To achieve the above object, an embodiment of the first aspect of the present invention provides a vertical annular one-step coking oven, which includes a furnace body. A raw material inlet, an activated coke outlet, a flue gas outlet, and a steam inlet are provided on the furnace body. Inside the furnace body, a carbonization section, an activation section, and a cooling section are sequentially arranged from top to bottom. Both the carbonization section and the activation section include a barrel core flue, a material channel, and an external flue which are sequentially arranged from inside to outside. The lower ends of both the barrel core flue and the external flue are communicated with the flue gas outlet. A plurality of spiral partitions are provided in the material channel from top to bottom, and the plurality of spiral partitions form a spiral downward feeding channel in the material channel. The top of the material channel is communicated with the raw material inlet, and the bottom is communicated with the activated coke outlet. The inner side of the part of the material channel located in the carbonization section is communicated with the barrel core flue, and the outer side is communicated with the external flue. The part of the material channel located in the activation section is communicated with the steam inlet.

[0008] In addition, the vertical annular one-step coking oven according to the above embodiment of the present invention may further have the following additional technical features:

[0009] In some embodiments of the present invention, the plurality of spiral partitions are divided into a plurality of inner spiral partitions and a plurality of outer spiral partitions. The plurality of inner spiral partitions are arranged on the inner side wall of the material channel, and the plurality of outer spiral partitions are arranged on the outer side wall of the material channel. The plurality of inner spiral partitions and the plurality of outer spiral partitions are arranged in a staggered manner from top to bottom.

[0010] In some embodiments of the present invention, a plurality of first combustible gas discharge holes are provided on each of the plurality of inner spiral partitions of the part of the material channel located in the carbonization section, and a first combustible gas channel is provided inside. The plurality of first combustible gas discharge holes located on the same inner spiral partition are all communicated with the first combustible gas channel, and the first combustible gas channel is communicated with the barrel core flue. A plurality of second combustible gas discharge holes are provided on each of the plurality of outer spiral partitions of the part of the material channel located in the carbonization section, and a second combustible gas channel is provided inside. The plurality of second combustible gas discharge holes located on the same outer spiral partition are all communicated with the second combustible gas channel, and the second combustible gas channel is communicated with the external flue.

[0011] In some embodiments of the present invention, a plurality of steam nozzles are provided on each of the plurality of inner spiral partitions and the plurality of outer spiral partitions of the part of the material channel located in the activation section, and a steam channel is provided inside. The plurality of steam nozzles and the steam channel located on the same inner spiral partition or outer spiral partition are communicated. All the steam channels are communicated with the steam inlet.

[0012] In some embodiments of the present invention, a first steam coil is provided in the part of the barrel core flue located in the activation section; one end of the first steam coil is connected to the steam inlet, and the other end is connected to a plurality of steam channels on a plurality of inner spiral partitions; a second steam coil is provided in the part of the external flue located in the activation section; one end of the second steam coil is connected to the steam inlet, and the other end is connected to a plurality of steam channels on a plurality of outer spiral partitions.

[0013] In some embodiments of the present invention, the included angle between the section planes of the plurality of spiral partitions and the horizontal plane is 60 - 80°.

[0014] In some embodiments of the present invention, in the carbonization section, an oxygen supplement injection pipe is provided between two adjacent spiral partitions up and down, and the included angle between the oxygen supplement injection pipe and the horizontal plane is the same as the included angle between the section plane of the spiral partition and the horizontal plane.

[0015] In some embodiments of the present invention, the vertical annular one-step coking oven further includes a flue gas passage, and the flue gas passage is provided between the activation section and the cooling section; the activation section is communicated with the barrel core passage, the external flue and the flue gas outlet; a water cooling coil is provided in the part of the furnace body located in the cooling section; air grilles are provided inside both the barrel core flue and the external flue in the parts located in the carbonization section and the activation section.

[0016] To achieve the above object, a second aspect embodiment of the present invention proposes a coking system, including the vertical annular one-step coking oven described in the embodiments of the present invention.

[0017] To achieve the above object, a third aspect embodiment of the present invention proposes a coking method, including:

[0018] After the raw coal particles enter the furnace body from the raw material inlet, they rotate and fall along the spiral feeding channel by their own gravity, pass through the carbonization section and the activation section in sequence, and then are discharged after being cooled by the cooling section.

[0019] The beneficial effects of the vertical annular one-step coking oven according to the embodiments of the present invention are as follows:

[0020] (1) The materials are evenly mixed, and the quality of the activated coke is uniform.

[0021] When the materials pass through the carbonization section and the activation section, they are evenly mixed, there are no problems of caking and flue gas dead zones, the gas released during the carbonization process can be discharged in time, and during the activation process, the activation gas is in full contact with the materials, the activation effect is good, and the quality of the activated coke is uniform.

[0022] (2) The activation time is short, and the output of the coking oven is high.

[0023] Due to the good contact effect between the activation gas and the materials during the activation process, the activation time is shortened, the feeding speed of the materials is increased, and the output of the coking oven is relatively high.

[0024] (3) The equipment is compact, occupies a small area, and has a low investment cost.

[0025] The material does not simply fall vertically in the coke oven, but tumbles and rotates left and right, increasing the travel of the material in the oven. This enables the coke oven to achieve the best results with a smaller size, resulting in a compact equipment, a small floor area, and a low investment cost.

[0026] (4) The preparation process is simple and the cost is low.

[0027] The coke oven of the present invention integrates the carbonization section and the activation section. After the material is carbonized, it directly enters the activation section. At the same time, the activation gas steam is directly generated by heat exchange with the high-temperature flue gas in the oven, eliminating the need for additional equipment. The process is simple and the cost is low.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the drawings, wherein:

[0030] Figure 1 is a simple front elevation sectional view of a vertical annular one-step coke oven according to an embodiment of the present invention.

[0031] Figure 2 is a top view of the carbonization section and the activation section of a vertical annular one-step coke oven according to an embodiment of the present invention.

[0032] Reference Signs:

[0033] 1 - barrel core flue; 2 - material channel; 3 - external flue; 4 - air grille; 5 - second combustible gas discharge hole; 6 - oxygen supplement injection pipe; 7 - spiral partition; 8 - first steam coil; 9 - steam nozzle; 10 - flue gas channel; 11 - water-cooled coil; 12 - inner spiral partition; 13 - first combustible gas channel; 14 - steam channel; 15 - outer spiral partition; 16 - raw material inlet; 17 - activated coke outlet; 19 - steam inlet; 20 - furnace body; 22 - second combustible gas channel; 23 - second steam coil; 100 - carbonization section; 200 - activation section; 300 - cooling section; 400 - feeding section; 500 - discharging section. Detailed Description of the Embodiments

[0034] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0035] For the vertical ring-shaped one-step coking oven according to an embodiment of the present invention, unless otherwise specified, the equipment and devices involved are all equipment and devices that can be obtained through commercial channels.

[0036] The following describes the vertical ring-shaped one-step coking oven according to an embodiment of the present invention with reference to the accompanying drawings.

[0037] Figure 1 It is a simple front view cross-sectional view of the vertical ring-shaped one-step coking oven according to an embodiment of the present invention.

[0038] As shown in Figure 1 , the vertical ring-shaped one-step coking oven according to an embodiment of the present invention includes a furnace body 20, and a raw material inlet 16, an activated coke outlet 17, a flue gas outlet 18 and a steam inlet 19 are provided on the furnace body 20; a carbonization section 100, an activation section 200 and a cooling section 300 are sequentially arranged in the furnace body 20 from top to bottom; both the carbonization section 100 and the activation section 200 include a barrel core flue 1, a material channel 2 and an external flue 3 arranged in sequence from inside to outside; the lower ends of both the barrel core flue 1 and the external flue 3 are communicated with the flue gas outlet 18; a plurality of spiral partitions 7 are arranged in the material channel 2 from top to bottom, and the plurality of spiral partitions 7 form a spiral downward material channel in the material channel 2; the top of the material channel 2 is communicated with the raw material inlet 16, and the bottom is communicated with the activated coke outlet 17; the inner side of the part of the material channel 2 located in the carbonization section 100 is communicated with the barrel core flue 1, and the outer side is communicated with the external flue 3; the part of the material channel 2 located in the activation section 200 is communicated with the steam inlet 19.

[0039] For the vertical ring-shaped one-step coking oven according to an embodiment of the present invention, by arranging an annular material channel in the carbonization and activation section of the furnace body and arranging a plurality of spiral partitions in the material channel to form a spiral downward material channel, the raw coal particles can realize one-step carbonization and activation in the furnace body, and it can ensure that the material is continuously turned and agitated during the falling process, improving the carbonization and activation effects and uniformity, reducing the preparation time, and increasing the output of the coking oven.

[0040] Optionally, the raw material inlet 16 is arranged at the top of the furnace body 20, the activated coke outlet 17 is arranged at the bottom of the furnace body, the flue gas outlet is arranged on the side wall of the furnace body 20 at the part between the activation section 200 and the cooling section 300, and the steam inlet 19 is arranged at the part of the side wall of the furnace body 20 close to the bottom of the activation section.

[0041] As a possible example of the present invention, as shown in Figure 1As shown, a blanking section 400 and a discharging section 500 are also provided in the furnace body. The blanking section 400 is arranged between the carbonization section and the raw material inlet 16, and the discharging section 500 is arranged between the cooling section 300 and the activated coke outlet 17. Both the blanking section 400 and the discharging section 500 are communicated with the raw material inlet 16, the material channel 2, the cooling section 300 and the activated coke outlet 17. In order to facilitate blanking and discharging, in some embodiments, both the blanking section and the discharging section can be set in a funnel shape. The blanking section is a funnel-shaped structure with a smaller upper part and a larger lower part, and the discharging section is a funnel-shaped structure with a larger upper part and a smaller lower part.

[0042] It should be noted that in the present invention, the shape of the furnace body itself is not limited. As a possible example, as Figure 1 shown, the furnace body has a structure that is thin at the upper and lower ends and thick in the middle. The thick part in the middle is the carbonization section and the activation section, the thin part at the upper end is the raw material inlet part, and the thin part at the lower end is the cooling section and the activated coke outlet part. Optionally, the outer diameter of the material channel in the carbonization section and the activation section is equivalent to the outer diameter of the cooling section, the outer diameter of the bottom of the raw material inlet part, and the diameter of the top of the activated coke outlet part. As another possible example, the furnace body has a structure that is thin at the upper and lower ends and thick in the middle. The thick part in the middle is the carbonization section, the activation section and the cooling section, the thin part at the upper end is the raw material inlet part, and the thin part at the lower end is the cooling section and the activated coke outlet part.

[0043] As a possible example of the present invention, as Figure 1 and Figure 2 shown, the carbonization section, the activation section and the cooling section of the furnace body are cylindrical. If the furnace body further includes a blanking section and a discharging section, both the blanking section and the discharging section are frustum-shaped.

[0044] As a possible example of the present invention, in order to ensure uniform blanking and uniform flue gas distribution in each part of the furnace body, as Figure 1 and Figure 2As shown, the barrel core flue 1, the material channel 2, and the external flue 3 are coaxially arranged. Also, in order to ensure the smoothness of material feeding, in some embodiments, the material channel 2 can be set to a structure with an annular cross-section, such as a circular ring structure. Specifically, as a possible example, a first annular sidewall and a second annular sidewall can be vertically installed at a certain interval in the furnace body (such as connected to the inner wall of the furnace body through brackets, etc.). The part where the top of the inner hole area of the first annular sidewall communicates with the raw material inlet is hermetically installed with a first partition board by welding or the like to form the barrel core flue. The area between the first annular sidewall and the second annular sidewall is the material channel, and the area between the second annular sidewall and the inner sidewall of the furnace body is the external flue. Both the first annular sidewall and the second annular sidewall can be formed by furnace channel bricks made of materials such as silicon carbide. Optionally, in order to guide the flue gas in the barrel core flue and the external flue out of the furnace body as much as possible and reduce the influence of the flue gas on material feeding, a second partition board can be hermetically installed at the part where the bottom of the barrel core channel communicates with the cooling section by welding or the like, and a barrel core channel outlet is opened on the second partition board. At the same time, a third partition board is hermetically installed at the part where the bottom of the external flue communicates with the cooling section by welding or the like, and an external flue outlet is opened on the third partition board. A flue gas channel 10 is arranged between the activation section and the cooling section, and the flue gas channel 10 is connected to the barrel core channel outlet, the external flue outlet, and the flue gas outlet (such as through a pipeline connection) to realize the timely discharge of the flue gas in the barrel core channel and the external flue in the furnace body.

[0045] Optionally, several spiral partition boards are all arc-shaped plates, and the included angle between the cross-section of several spiral partition boards 7 and the horizontal plane is between 60° and 80°. In this way, the spiral partition boards enable the material to continuously fall obliquely downward along the circumferential direction of the material channel (when the material channel is circular, it is the circumferential direction), causing the material to tumble during the falling process, and making the material heating and activation more uniform. In some embodiments, for better material feeding, several spiral partition boards are spirally arranged from the top of the carbonization section 100 to the bottom of the activation section 300.

[0046] Optionally, in some embodiments, in order to supply oxygen for carbonization, an oxygen supply injection pipe 6 is arranged between two adjacent spiral partition boards 7 up and down in the carbonization section 100. The included angle between the oxygen supply injection pipe 6 and the horizontal plane is the same as the included angle between the cross-section of the spiral partition board 7 and the horizontal plane, and is also between 60° and 80°. As a possible example of the present invention, the oxygen supply injection pipe is a pipe with several gas injection holes opened, and an air inlet is opened on the pipe. The air inlet is connected to an air source or an oxygen source outside the furnace body through a pipeline. The oxygen supply injection pipe is fixed on the inner wall of the material channel by means of bolt connection, welding, etc., and one end of its air inlet can extend through the inner wall of the material channel into the barrel core flue (as Figure 1 shown).

[0047] Optionally, as Figure 2As shown, a number of spiral baffles 7 are divided into a number of inner spiral baffles 12 and a number of outer spiral baffles 15; a number of inner spiral baffles 12 are arranged on the inner side wall of the material channel 2, and a number of outer spiral baffles 15 are arranged on the outer side wall of the material channel 2; the a number of inner spiral baffles 12 and the a number of outer spiral baffles 15 are arranged alternately from top to bottom. The structure of the material channel with spiral baffles arranged alternately along the two side inner walls can cause the material to be affected by the alternately arranged inner spiral baffles and outer spiral baffles during the falling process, increasing the left and right falling travel. In some embodiments, the inner spiral baffles 12 and the outer spiral baffles 15 are arranged alternately up and down at equal intervals and equal angles.

[0048] Optionally, in order to discharge the flue gas in the material channel, a number of first combustible gas discharge holes (not shown in the figure) are provided on a number of inner spiral baffles 12 in the carbonization section 100 of the material channel 2, and a first combustible gas channel 13 is provided inside a number of inner spiral baffles 12 in the carbonization section 100 of the material channel 2; a number of first combustible gas discharge holes on the same inner spiral baffle 12 are all communicated with the first combustible gas channel 13 on this inner spiral baffle, and the first combustible gas channel 13 is communicated with the barrel core flue 1; a number of second combustible gas discharge holes 5 are provided on a number of outer spiral baffles 15 in the carbonization section 100 of the material channel 2, and a second combustible gas channel 22 is provided inside a number of outer spiral baffles 15 in the carbonization section 100 of the material channel 2; a number of second combustible gas discharge holes 5 on the same outer spiral baffle 15 are all communicated with the second combustible gas channel 22 on this outer spiral baffle, and the second combustible gas channel 22 is communicated with the external flue 3. This way of discharging flue gas from different heights on both sides of the material channel is more conducive to the rapid discharge of the tar carried by the evolved gas compared with the way of centrally arranging a flue gas discharge port in the material channel, preventing the coking material from sticking due to the untimely discharge of the generated tar; in addition, the evolved gas discharged from different positions starts to burn immediately when it enters the flue gas channel. Setting discharge ports at different positions is conducive to uniform combustion and prevents local overheating.

[0049] It should be noted that the position of the first combustible gas discharge hole on the corresponding inner spiral baffle is not limited, as long as it is ensured that it is communicated with the first combustible gas channel on the corresponding inner spiral baffle and can discharge the flue gas. As a possible example, the first combustible gas discharge hole is arranged at the bottom of the corresponding inner spiral baffle (i.e., on the side close to the cooling section); similarly, the position of the second combustible gas discharge hole on the corresponding outer spiral baffle is not limited, as long as it is ensured that it is communicated with the second combustible gas channel on the corresponding outer spiral baffle and can discharge the flue gas. As a possible example, the second combustible gas discharge hole is arranged at the bottom of the corresponding outer spiral baffle (i.e., on the side close to the cooling section). In addition, both the first combustible gas channel and the second combustible gas channel can be arranged along the width direction of the material channel (such as Figure 2As shown, in some embodiments, it may be equivalent to the radian of the inner spiral partition or the outer spiral partition where it is located.

[0050] Optionally, a plurality of steam nozzles 9 are provided on a plurality of inner spiral partitions 12 and a plurality of outer spiral partitions 15 of the chute 2 in the activation section 200. A steam channel 14 is provided inside a plurality of inner spiral partitions 12 and a plurality of outer spiral partitions 15 of the chute 2 in the activation section 200. A plurality of steam nozzles 9 and steam channels 14 located on the same inner spiral partition 12 or outer spiral partition 15 are communicated. All steam channels 14 are communicated with the steam inlet 19. This structural design of arranging gas nozzles on the bottom surface of the spiral partition and gas channels inside is beneficial to the discharge of the gas precipitated in the carbonization section and the full contact between the activation gas and the material in the activation section.

[0051] Optionally, as Figure 1 As shown, a first steam coil 8 is provided in the part of the barrel core flue 1 in the activation section 200. One end of the first steam coil 8 is communicated with the steam inlet 19, and the other end is communicated with a plurality of steam channels 14 on a plurality of inner spiral partitions 12. A second steam coil 23 is provided in the part of the external flue 3 in the activation section 200. One end of the second steam coil 23 is communicated with the steam inlet 19, and the other end is communicated with a plurality of steam channels 14 on a plurality of outer spiral partitions 15. Air grilles 4 are provided inside the parts of the barrel core flue 1 and the external flue 3 in the carbonization section 100 and the activation section 200. Arranging air grilles in the flue gas channel can directly burn the tar and combustible gas generated by carbonization and activation, and directly arrange the steam coil in the flue gas channel to directly generate high-temperature steam using the waste heat of the flue gas, with a compact structure. It should be noted that the structure of the air grille 4 is the same as that of the existing ammonia injection grille, and they can be installed on the side wall of the furnace body, and the gas outlet extends into the corresponding flue.

[0052] Optionally, a water-cooled coil 11 is provided in the part of the furnace body 20 in the cooling section 300. The inlet and outlet of the water-cooled coil extend out of the furnace body through through-holes provided on the side wall of the furnace body and are communicated with the cold water source. The setting of the water-cooled coil can cool the material after activation to obtain activated coke.

[0053] The operation method of the vertical annular one-step coking furnace according to the embodiment of the present invention is as follows:

[0054] Raw coal particles enter the furnace body from the raw material inlet 16, successively pass through the feeding section 400, the carbonization section 100, the activation section 200, the cooling section 300 and the discharging section 500, and are discharged from the activated coke outlet 17 at the bottom of the coke oven. The material falls into the carbonization section 100 from the feeding section 400 and rotates and falls along the inclination of a number of spiral partitions 7 in the material channel 2 by its own gravity. At the same time, a number of spiral partitions 7 (i.e., the inner spiral partition 12 and the outer spiral partition 15) arranged alternately on the inner walls on both sides of the material channel 2 cause the material to run alternately left and right. The continuous tumbling of the material prevents the material from caking and the occurrence of gas dead zones, making it easier for the gas thermally released in the carbonization section 100 of the material to be discharged, and making the contact between the activation gas and the material in the activation section 200 more sufficient. During the whole operation process, the air grille can directly burn the tar and combustible gas generated by carbonization and activation, and directly arrange the steam coil in the flue gas channel to directly generate high-temperature steam by using the waste heat of the flue gas, with a compact structure. The oxygen supplement injection pipe can supply oxygen to the carbonization section, so that the volatile components, tar, etc. released during the carbonization process are initially burned under the action of the oxygen supplemented by the oxygen supplement injection pipe first. At the same time, the oxygen supplement injection pipe also supplements oxygen to make the raw coal particles burn slightly to supplement heat. A part of the combustible gas generated by carbonization can enter its corresponding first combustible gas channel through a number of first combustible gas discharge holes, enter the barrel core flue, and another part can enter its corresponding second combustible gas channel through a number of second combustible gas discharge holes, enter the external flue, and finally be collected through the flue gas channel and discharged to the outside of the furnace body. The first steam coil and the second steam coil supply water vapor to the activation section. The activated water vapor flows upward to the carbonization section, enters the barrel core flue and the external flue respectively through a number of first combustible gas discharge holes and a number of second combustible gas discharge holes, and is finally discharged through the flue gas channel.

[0055] The coke-making system of the embodiment of the present invention includes the vertical ring-shaped one-step coke oven of the embodiment of the present invention and has the beneficial effects of the vertical ring-shaped one-step coke oven of the embodiment of the present invention.

[0056] The coke-making method of the embodiment of the present invention includes: after the raw coal particles enter the furnace body from the raw material inlet, they rotate and fall along the spiral feeding channel by their own gravity, successively pass through the carbonization section and the activation section, and are then discharged after being cooled by the cooling section. The specific process is basically the same as the operation method of the vertical ring-shaped one-step coke oven of the embodiment of the present invention and will not be elaborated here.

[0057] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0058] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0059] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0061] In the present invention, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0062] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A vertical annular one-step coking oven, characterized in that, It includes a furnace body, on which there are a raw material inlet, an activated coke outlet, a flue gas outlet and a steam inlet; inside the furnace body, there are a carbonization section, an activation section and a cooling section arranged from top to bottom in sequence; both the carbonization section and the activation section include a barrel core flue, a material channel and an external flue arranged from inside to outside in sequence; the lower ends of both the barrel core flue and the external flue are communicated with the flue gas outlet; air grilles are arranged inside the parts of the barrel core flue and the external flue located in the carbonization section and the activation section, and the evolved gas discharged from different positions immediately burns when entering the flue gas channel; the material channel is arranged in a ring-shaped cross-section structure, and several spiral partitions are arranged from top to bottom in the material channel; the top of the material channel is communicated with the raw material inlet, and the bottom is communicated with the activated coke outlet; the inner side of the part of the material channel located in the carbonization section is communicated with the barrel core flue, and the outer side is communicated with the external flue; the part of the material channel located in the activation section is communicated with the steam inlet; The several spiral partitions are divided into several inner spiral partitions and several outer spiral partitions; the several spiral partitions are all arc-shaped plates, and the spiral partitions make the material continuously fall obliquely along the circumferential direction of the material channel; the several inner spiral partitions are arranged on the inner side wall of the material channel, and the several outer spiral partitions are arranged on the outer side wall of the material channel; the several inner spiral partitions and the several outer spiral partitions are arranged alternately from top to bottom; On the several inner spiral partitions of the part of the material channel located in the carbonization section, there are several first combustible gas discharge holes, and a first combustible gas channel is arranged inside; several first combustible gas discharge holes located on the same inner spiral partition are all communicated with the first combustible gas channel, and the first combustible gas channel is communicated with the barrel core flue; on the several outer spiral partitions of the part of the material channel located in the carbonization section, there are several second combustible gas discharge holes, and a second combustible gas channel is arranged inside; several second combustible gas discharge holes located on the same outer spiral partition are all communicated with the second combustible gas channel, and the second combustible gas channel is communicated with the external flue.

2. The vertical annular one-step coking oven according to claim 1, characterized in that, On the several inner spiral partitions and several outer spiral partitions of the part of the material channel located in the activation section, there are several steam nozzles, and a steam channel is arranged inside; several steam nozzles and the steam channel located on the same inner spiral partition or outer spiral partition are communicated; all the steam channels are communicated with the steam inlet.

3. The vertical annular one-step coking oven according to claim 2, characterized in that, The part of the barrel core flue located in the activation section is provided with a first steam coil; one end of the first steam coil is communicated with the steam inlet, and the other end is communicated with several steam channels on several inner spiral partitions; the part of the external flue located in the activation section is provided with a second steam coil; one end of the second steam coil is communicated with the steam inlet, and the other end is communicated with several steam channels on several outer spiral partitions.

4. The vertical annular one-step coking oven according to claim 1, characterized in that, The included angle between the section plane of the several spiral partitions and the horizontal plane is 60 - 80°.

5. The vertical annular one-step coking oven according to claim 1, characterized in that, Inside the carbonization section, an oxygen supplement injection pipe is arranged between two adjacent spiral partitions up and down.

6. The vertical annular one-step coking oven according to claim 1, characterized in that, It also includes a flue gas channel, which is arranged between the activation section and the cooling section; the part of the furnace body located in the cooling section is provided with a water-cooled coil.

7. A coking system, characterized in that, It includes the vertical annular one-step coking furnace according to any one of claims 1 to 6.

8. A coking method using the vertical annular one-step coking oven according to any one of claims 1 to 6, characterized in that, It includes: After the raw coal particles enter the furnace body from the raw material inlet, they rotate and fall by their own gravity, passing through the carbonization section and the activation section in sequence, and then are discharged after being cooled in the cooling section.

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