A riser heat exchanger with variable heat exchange area

Abstract

The present invention discloses a riser heat exchanger with a variable heat exchange area, comprising a riser heat exchanger body, the cylinder of the riser heat exchanger body is vertically arranged, comprising a round rod, a driving mechanism and N fan-shaped baffles, wherein N is a positive integer greater than 2, the round rod is coaxially arranged inside the cylinder, the baffles are coaxially arranged inside the cylinder, and a circular ring corresponding to the round rod is arranged at the center of the circle, the baffles rotate around the round rod through the corresponding circular ring, and the side walls thereof are rotatably fitted with the inner wall of the cylinder, a plurality of baffles are stacked up and down, and any two adjacent baffles are slidably fitted, any baffle can rotate 2π / N relative to the baffle above it, the side wall of one of the top and bottom two baffles is fixedly connected to the inner wall of the cylinder, and the other baffle is transmission-connected to the driving mechanism. The present invention provides a riser heat exchanger capable of adjusting the effective heat exchange area.

Description

Technical Field

[0001] The present invention relates to the field of riser heat exchangers, and more specifically, to a riser heat exchanger with a variable heat exchange area. Background Art

[0002] With the vigorous promotion of the national energy-saving and environmental protection policies, resource conservation, environmental friendliness and green coking have become the direction of industrial upgrading in the coking industry. The recovery and utilization of sensible heat from coke oven waste gas is one of the main ways for coking enterprises to reduce energy consumption.

[0003] The existing process is to recover the sensible heat of the 650℃-850℃ high-temperature raw gas escaping from the carbonization chamber through the riser heat exchanger before entering the gas collecting pipe to send it to the chemical production process. As the core equipment, the riser heat exchanger is affected by the operation cycle of the coke oven. During the operation from coal addition to coke pushing, the temperature and flow of the raw gas change periodically. When the temperature of the inner wall of the riser heat exchanger drops below 450℃, the tar in the raw gas begins to precipitate and adhere to the inner wall of the riser, resulting in pollution of the heating surface and deterioration of heat transfer, which in turn causes the heat of the raw gas to be unable to be effectively absorbed. On the other hand, the tar mist escapes to produce black smoke, which seriously pollutes the environment. It can be seen that the wall temperature control is important in the operation of the system. However, the current riser heat exchanger is mostly adjusted by changing the water supply, which is not effective. How to directly and efficiently achieve the temperature control of the inner wall of the riser has become the focus of efficient and environmentally friendly operation of the device. Summary of the invention

[0004] The object of the present invention is to provide a riser heat exchanger capable of adjusting the effective heat exchange area.

[0005] In order to achieve these purposes and other advantages according to the present invention, a riser heat exchanger with a variable heat exchange area is provided, comprising a riser heat exchanger body, the cylinder of the riser heat exchanger body is vertically arranged, comprising a round rod, a driving mechanism, and N fan-shaped baffles, wherein N is a positive integer greater than 2, and the center angle θ of the baffle is greater than 2π / N, the round rod is coaxially arranged inside the cylinder, and its upper end is fixedly connected to the top wall of the cylinder, the baffles are coaxially arranged inside the cylinder, and a ring corresponding to the round rod is provided at the center of the circle, and the rings can be rotatably mounted on the round rod, the baffles are rotated around the round rod through corresponding circles, and their side walls are rotatably fitted with the inner wall of the cylinder, a plurality of the baffles are stacked up and down, and any two adjacent baffles can be slidably fitted, any baffle can rotate 2π / N relative to the baffle above it, and the side wall of the baffle located at the top is rotatable with the inner wall of the cylinder The cam is fixedly connected, and a first vertical plate is vertically provided in a radial direction away from one end of the baffle located below it, one end of the first vertical plate is connected to the inner wall of the cylinder body, and the other end of the first vertical plate is close to the round rod, and the upper end of the baffle located at the bottom is vertically provided with a second vertical plate in a radial direction away from one end of the baffle located above it, one end of the second vertical plate is rotatably connected to the round rod, and the other end of the second vertical plate is rotatably engaged with the inner wall of the cylinder body, and the upper ends of the first vertical plate and the second vertical plate both extend upward to rotatably engage with the top wall of the cylinder body, and the baffle located at the bottom or the second vertical plate is transmission-connected to the driving mechanism, and the driving mechanism drives the baffle located at the bottom and the second vertical plate to rotate around the round rod, and the baffle located at the bottom drives the baffle above it to rotate in turn, so that N baffles, the first vertical plate and the second vertical plate form a fan-shaped gas rising channel opening with a central angle not greater than 2π-θ in the cylinder.

[0006] Preferably, in the riser heat exchanger with a variable heat exchange area, the driving mechanism includes a driving unit, a cylinder and a transmission rod, the cylinder is coaxially sleeved on the rod and connected to the other baffle, the cylinder is sleeved with a driven gear, the transmission rod rotatably passes through the cylinder body horizontally, the end of the transmission rod located outside the cylinder is transmission-connected to the driving unit, and the end of the transmission rod located inside the cylinder is coaxially sleeved with a bevel gear, and the bevel gear is meshed with the driven gear.

[0007] Preferably, in the riser heat exchanger with a variable heat exchange area, the driving unit is a driving motor and a reducer, the driving motor and the reducer are transmission-connected, and the reducer is transmission-connected to one end of the transmission rod.

[0008] Preferably, in the riser heat exchanger with a variable heat exchange area, the upper end of the baffle is coaxially provided with an arc-shaped groove with a central angle of 2π / N, and the lower end is provided with a protrusion corresponding to the groove, and the protrusion of the baffle can be slidably arranged in the groove of the baffle below it.

[0009] The riser heat exchanger of the present invention forms a gas rising channel opening in the cylinder body by means of a plurality of baffles stacked up and down, and then forms a gas rising channel together with the first vertical plate and the second vertical plate together with the gas rising channel opening, and the driving mechanism drives the plurality of fan-shaped baffles stacked up and down to rotate, so as to change the area of ​​the inner wall of the cylinder body in the gas rising channel, that is, to adjust the heat exchange area between the riser heat exchanger and the raw gas.

[0010] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A cross-sectional view of the cylinder of the present invention in the horizontal direction;

[0012] Figure 2 for Figure 1 Section view of the middle AA section;

[0013] Figure 3 FIG. 1 is a top view of a baffle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0015] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0016] like Figure 1-Figure 3As shown, an embodiment of the present invention provides a riser heat exchanger with a variable heat exchange area, comprising a riser heat exchanger body, wherein a cylinder 1 of the riser heat exchanger body is vertically arranged, comprising a round rod 2, a driving mechanism, and N fan-shaped baffles 3, wherein N is a positive integer greater than 2, and the center angle θ of the baffle 3 is greater than 2π / N, the round rod 2 is coaxially arranged inside the cylinder 1, and the upper end thereof is fixedly connected to the top wall of the cylinder 1, the baffles 3 are coaxially arranged inside the cylinder 1, and a circular ring 4 corresponding to the round rod 2 is provided at the center of the circle, and the circular ring 4 is provided at the center of the circular ring 4. The rings 4 can be rotatably sleeved on the round rod 2, and the baffles 3 can rotate around the round rod 2 through the corresponding rings 4, and their side walls can be rotatably fitted with the inner wall of the cylinder 1. Multiple baffles 3 are stacked up and down, and any two adjacent baffles 3 can be slidably fitted. Any baffle 3 can rotate 2π / N relative to the baffle 3 above it. The side wall of the baffle 3 located at the top is fixedly connected to the inner wall of the cylinder 1, and its upper end is away from the end of the baffle 3 located below it. A first vertical plate 13 is vertically provided along the radial direction. The first vertical plate 13 One end of the plate 13 is connected to the inner wall of the cylinder 1, and the other end thereof is close to the round rod 2. The upper end of the baffle 3 located at the bottom is away from the end of the baffle 3 located above it and is vertically provided with a second vertical plate 14 in the radial direction. A sleeve 15 is provided at one end of the second vertical plate 14. The sleeve 15 is coaxially sleeved on the round rod 2 and rotatably connected thereto. The end of the first vertical plate 13 close to the round rod 2 is rotatably fitted with the outer periphery of the sleeve 15, and the other end of the second vertical plate 14 is rotatably fitted with the inner wall of the cylinder 1. The first vertical plate 13 and the The upper ends of the second vertical plates 14 are extended upward to be rotatably fitted with the top wall of the cylinder 1, and the baffle plate 3 or the second vertical plate 14 located at the bottom is connected to the driving mechanism, and the driving mechanism drives the baffle plate 3 and the second vertical plate 14 located at the bottom to rotate around the round rod 2, and the baffle plate 3 located at the bottom drives the baffle plates 3 above it to rotate in turn, so that N pieces of the baffle plates 3, the first vertical plates 13 and the second vertical plates 14 form a fan-shaped gas rising channel opening with a central angle not greater than 2π-θ in the cylinder 1.

[0017] In this embodiment, N fan-shaped baffles 3 with a central angle θ greater than 2π / N are stacked up and down, and all are rotatably arranged on the round rod 2 through the ring 4. The side walls of the baffles 3 are rotatably fitted with the inner wall of the cylinder 5, so that the two adjacent baffles 3 can slide relative to each other by 2π / N. In this embodiment, Figure 1 and Figure 2 In the embodiment, N=6, θ is 80°, so that the baffle plate 3 and the two baffle plates 3 above and below it partially overlap, so that the N baffle plates 3 form an airtight whole, which has the effect of blocking the rising raw gas; Figure 2As shown, the baffle plate 3 at the bottom is driven by the driving mechanism to rotate around the round rod 2. When the driving mechanism continues to work, the baffle plate 3 at the bottom drives the baffle plate 3 above it to slide 2π / N, and then drives the baffle plate 3 above it to slide 2π / N relative to the baffle plate 3 above it, and so on, until the baffle plate 3 below the baffle plate 3 at the top slides 2π / N relative to the baffle plate 3 at the top slides. At this time, the cylinder 1 of the riser heat exchanger body can be separated from the top by multiple baffle plates 3. When the multiple baffle plates 3 do not separate the cylinder 1 from the top, the multiple baffle plates 3 will form a raw gas barrier in the cylinder 1. As the upper ends of the first vertical plate 13 and the second vertical plate 14 extend upward to connect with the top wall of the cylinder 1, a raw gas ascending channel is formed between the multiple baffles 3 and the first vertical plate 13 and the second vertical plate 14. The inner wall of the cylinder 1 in the raw gas ascending channel plays a role in heat exchange, so that the size of the open raw gas ascending channel port can be adjusted by controlling the working time of the driving mechanism, and the part of the inner wall of the cylinder 1 in the raw gas ascending channel can be adjusted, thereby adjusting the area of ​​the inner wall of the cylinder 1 and the raw gas heat exchange part, thereby adjusting the gas outlet temperature of the cylinder 1 of the riser heat exchanger body.

[0018] Specifically, Figure 3 As shown, when the side wall of the uppermost square baffle 3 is fixedly connected to the inner wall of the cylinder 1, the upper end of the baffle 3 is coaxially provided with an arc-shaped groove 11 with a central angle of 2π / N, and the lower end thereof is provided with a protrusion 12 corresponding to the groove 11, and the protrusion 12 of the baffle 3 can be slidably arranged in the groove 11 of the baffle 3 below it.

[0019] Preferably, as another embodiment of the present invention, the driving mechanism includes a driving unit, a cylinder 5 and a transmission rod 6, the cylinder 5 is coaxially sleeved on the round rod 2 and connected to the other baffle 3, the cylinder 5 is sleeved with a driven gear 7, the transmission rod 6 can rotatably penetrate the cylinder body 1 horizontally, one end of which is located outside the cylinder body 1 is transmission connected to the driving unit, and one end of which is located inside the cylinder body 1 is coaxially sleeved with a bevel gear 8, the bevel gear 8 is meshed with the driven gear 7, the driving unit is a driving motor 9 and a reducer 10, the driving motor 9 is transmission connected to the reducer 10, and the reducer 10 is transmission connected to one end of the transmission rod 6.

[0020] In this embodiment, a bearing seat can be provided on the cylinder 1, and the bearing seat is tightly connected to the cylinder 1. The transmission rod 6 passes through the bearing seat, so that the transmission rod 6 can rotate relative to the cylinder 1, thereby driving the driven gear 7 to rotate through the bevel gear 8, and driving the second vertical plate 14 and the baffle 3 connected thereto to rotate.

[0021] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A riser heat exchanger with a variable heat exchange area, comprising a riser heat exchanger body, wherein the cylinder (1) of the riser heat exchanger body is arranged vertically, and characterized in that: The invention comprises a round rod (2), a driving mechanism, and N sector-shaped baffles (3), wherein N is a positive integer greater than 2, and the center angle θ of the baffles (3) is greater than 2π / N, the round rod (2) is coaxially arranged inside the cylinder (1), and the upper end thereof is fixedly connected to the top wall of the cylinder (1), the baffles (3) are coaxially arranged inside the cylinder (1), and a ring (4) corresponding to the round rod (2) is arranged at the center of the circle, and the ring (4) can be rotatably sleeved on the round rod (2), and the baffles (3) are arranged by corresponding The circular ring (4) rotates around the round rod (2), and its side walls are rotatably fitted with the inner wall of the cylinder (1), a plurality of baffles (3) are stacked up and down, and any two adjacent baffles (3) are slidably fitted, and any baffle (3) can rotate 2π / N relative to the baffle (3) located above it, and the side wall of the baffle (3) located at the top is fixedly connected to the inner wall of the cylinder (1), and its upper end is away from one end of the baffle (3) located below it. A first vertical plate (13) is vertically provided along the radial direction, and the first vertical plate (13) is vertically provided along the radial direction. One end of a vertical plate (13) is connected to the inner wall of the cylinder (1), and the other end of the vertical plate (13) is close to the round rod (2). The upper end of the baffle (3) located at the bottom is away from the end of the baffle (3) located above it. A second vertical plate (14) is vertically provided in the radial direction. One end of the second vertical plate (14) is rotatably connected to the round rod (2), and the other end of the second vertical plate (14) is rotatably fitted with the inner wall of the cylinder (1). The upper ends of the first vertical plate (13) and the second vertical plate (14) are both extended upward to the top wall of the cylinder (1) and can be rotatably fitted. The baffle plate (3) or the second vertical plate (14) located at the bottom is in driving connection with the driving mechanism, and the driving mechanism drives the baffle plate (3) and the second vertical plate (14) located at the bottom to rotate around the round rod (2), and the baffle plate (3) located at the bottom drives the baffle plates (3) above it to rotate in sequence, so that N pieces of the baffle plates (3), the first vertical plate (13) and the second vertical plate (14) form a fan-shaped coal gas ascending channel opening with a central angle of no more than 2π-θ in the cylinder (1).

2. A variable heat exchange area riser heat exchanger according to claim 1, characterized in that: The driving mechanism comprises a driving unit, a cylinder (5) and a transmission rod (6); the cylinder (5) is coaxially sleeved on the round rod (2) and connected to the other baffle (3); a driven gear (7) is sleeved on the cylinder (5); the transmission rod (6) rotatably passes through the cylinder (1) horizontally; one end of the transmission rod located outside the cylinder (1) is transmission-connected to the driving unit; and one end of the transmission rod located inside the cylinder (1) is coaxially sleeved with a bevel gear (8); the bevel gear (8) meshes with the driven gear (7).

3. A variable heat exchange area riser heat exchanger according to claim 2, characterized in that: The driving unit comprises a driving motor (9) and a reducer (10); the driving motor (9) and the reducer (10) are in transmission connection; and the reducer (10) is in transmission connection with one end of the driving rod (6).

4. A riser heat exchanger with a variable heat exchange area according to any one of claims 1 to 3, characterized in that: The upper end of the baffle (3) is coaxially provided with an arc-shaped groove (11) with a central angle of 2π / N, and the lower end is provided with a protrusion (12) corresponding to the groove (11), and the protrusion (12) of the baffle (3) can be slidably arranged in the groove (11) of the baffle (3) below it.

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