Energy-saving type high-temperature carbon calcined coke particle cooling device

Abstract

The utility model provides an energy-saving high-temperature carbon calcined coke particle cooling device which comprises a high-temperature section for generating steam at the upper part and a low-temperature section for generating hot water at the lower part, the high-temperature section is formed by coiling a heat exchange coil, and steam is generated in the heat exchange coil; the low-temperature section is composed of an inner plate and an outer plate, the outer plate comprises a first outer plate and a second outer plate which are independently arranged on the outer wall of the inner plate, independent heat exchange spaces are formed between the first outer plate and the inner plate, and the two heat exchange spaces are communicated through an external connecting pipe; one of the first outer plate and the second outer plate is provided with a water inlet, and the other outer plate is provided with a water outlet. In the device, the high-temperature section is formed by the heat exchange coil and is in direct contact with high-temperature particles, the steam production effect is good, and the energy-saving efficiency is high; the two independent heat exchange spaces are arranged in the low-temperature section, water flow is communicated in series through the connecting pipe, the water flow speed in the jacket can be effectively increased, scale deposition is reduced, the high-speed water flow can bring oxygen separated out of detained steam and cold water out of the jacket, and oxygen corrosion is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of cooling devices for calcined coke particles, and specifically relates to an energy-saving high-temperature carbon calcined coke particle cooling device. Background Technology

[0002] Currently, in carbon processing, petroleum coke or pitch coke, after being calcined at high temperatures (~1000℃), slowly falls into a water-jacketed cooler under gravity to cool to ~100℃ (this temperature must be maintained to prevent oxidation of the calcined coke and ensure quality). Cold water enters the water jacket and, through a partition, cools the calcined coke, turning it into hot water. This hot water is then cooled by an external cooling tower and, driven by a circulating pump, re-enters the water-jacketed cooler. The water-jacketed cooler consists of high-temperature and low-temperature sections connected in series by flanges, with cooling water connected in series via pipes. The high-temperature section is at the top, and the low-temperature section is at the bottom. The high-temperature calcined coke enters the high-temperature section first, followed by the low-temperature section; the cooling water enters the low-temperature section first, followed by the high-temperature section.

[0003] Because the circulating water quality is poor, dirt easily accumulates, and even with manholes, it's impossible to remove all the dirt in time, reducing the cooling capacity of the water jacket. Simultaneously, the water jacket has dead zones in the flow, causing frequent stagnation of cooling water, which turns into steam, further reducing cooling capacity and leading to bulging and damage to the jacket's walls. Dissolved oxygen in the water precipitates at high temperatures, causing oxygen corrosion on the top of the walls. Furthermore, the heat from the high-temperature calcined coke is wasted. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the defects of the prior art, this utility model provides an energy-saving cooling device for high-temperature carbon calcined coke particles. This device can effectively utilize the waste heat of high-temperature carbon calcined coke particles, avoid oxygen corrosion, improve cooling capacity, and extend the service life of the water jacket.

[0005] Technical solution: To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0006] An energy-saving high-temperature carbon calcined coke particle cooling device includes an upper high-temperature section for steam generation and a lower low-temperature section for hot water generation. The high-temperature section is formed by coiled heat exchange tubes, which generate steam. The low-temperature section consists of an inner plate and an outer plate. The outer plate includes a first outer plate and a second outer plate, which are independently installed on the outer wall of the inner plate, forming independent heat exchange spaces with the inner plate. The two heat exchange spaces are connected by an external connecting pipe. One of the first and second outer plates has a water inlet, and the other outer plate has a water outlet.

[0007] As a specific implementation, a first water inlet is provided near the bottom of the first outer plate, and a first water outlet is provided near the top of the second outer plate; the upper end of the connecting pipe is connected to the side wall near the top of the first outer plate, and the lower end is connected to the side wall near the bottom of the second outer plate.

[0008] As a specific implementation, the inner panel includes a first inner panel and a second inner panel, the first outer panel is disposed on the outer wall of the first inner panel, the second outer panel is disposed on the outer wall of the second inner panel, and the first inner panel and the second inner panel are sealed and spliced ​​together to form the inner panel.

[0009] As a specific implementation plan, the high-temperature section is formed by coiling heat exchange tubes, with one end of the heat exchange tubes serving as the second water inlet and the other end as the second water outlet.

[0010] As a specific implementation scheme, the diameter of the connecting pipe is selected to enable the water flow velocity in the pipe to reach more than 1m / s.

[0011] As a specific implementation plan, both the high-temperature section and the low-temperature section are cylindrical structures.

[0012] In one specific implementation, the high-temperature section and the low-temperature section are an integrally connected structure, with the lower end of the high-temperature section and the upper end of the low-temperature section connected by a flange seal. Alternatively, they can be separate structures, facilitating on-site connection, transportation, and installation.

[0013] Beneficial effects: In this novel cooling device, two independent heat exchange spaces are set between the inner and outer plates of the low-temperature section. The water flow is connected in series through a connecting pipe, which can effectively increase the water flow velocity in the jacket, reduce scale deposition, and the high-speed water flow can carry the stagnant steam and oxygen precipitated in the cold water out of the jacket, avoiding oxygen corrosion, improving cooling capacity, and extending the service life of the water jacket. In addition, the high-temperature section is formed by heat exchange coils, which directly contact high-temperature particles, resulting in good steam generation and high energy efficiency.

[0014] Secondly, in existing technologies, the low-temperature section is usually a single-piece structure, with the weld seams of the inner plate covered by the outer plate. If the weld seams are damaged and leaks occur, they are not visible from the outside, leading to a large amount of cold water entering the coke material. In this invention, the low-temperature section is formed by splicing two half structures. Each half has a single inner and outer plate. At the joint of the half inner plates, the weld seams are directly exposed, making them easier to detect during inspection and facilitating timely repairs.

[0015] Finally, the high-temperature section and the low-temperature section can be an integral connection structure or a separate structure, which is convenient for on-site connection, transportation and installation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the cooling device of this utility model.

[0017] Figure 2 This is a structural schematic diagram (perspective view) of the cooling device of this utility model.

[0018] Figure 3 This is a schematic diagram of the high-temperature section in the cooling device of this utility model.

[0019] Figure 4 This is a schematic diagram of the low-temperature section in the cooling device of this utility model.

[0020] Figure 5 This is a structural schematic diagram (perspective view) of the low-temperature section in the cooling device of this utility model.

[0021] Figure 6 This is a structural schematic diagram (cross-sectional view) of the low-temperature section in the cooling device of this utility model. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "top", "bottom", "inner", "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent.

[0024] Example 1

[0025] An energy-saving high-temperature carbon calcined coke particle cooling device, such as... Figure 1 and Figure 2 As shown, it includes a high-temperature section 1 for steam production in the upper part and a low-temperature section 2 for hot water production in the lower part.

[0026] like Figure 3 As shown, the high-temperature section 1 is formed by coiling heat exchange tubes 11. One end of the heat exchange tubes 11 is the second water inlet 11-1, and the other end is the second water outlet 11-2. Steam is generated inside the heat exchange tubes 11.

[0027] like Figure 4 and Figure 5As shown, the low-temperature section 2 consists of an inner plate 21 and an outer plate 22. The outer plate 22 includes a first outer plate 22-1 and a second outer plate 22-2, which are independently installed on the outer wall of the inner plate 21, forming independent heat exchange spaces with the inner plate 21 respectively. The two heat exchange spaces are connected by an external connecting pipe 3. The first outer plate 22-1 has a first water inlet 4 near the bottom, and the second outer plate 22-2 has a first water outlet 5 near the top. The upper end of the connecting pipe 3 is connected to the side wall of the first outer plate 22-1 near the top, and the lower end is connected to the side wall of the second outer plate 22-2 near the bottom. The diameter of the connecting pipe 3 can be selected to allow the water flow velocity in the pipe to reach more than 1 m / s, ensuring that no dirt remains in the connecting pipe.

[0028] like Figure 6 As shown, the inner plate 21 includes a first inner plate 21-1 and a second inner plate 21-2. A first outer plate 22-1 is disposed on the outer wall of the first inner plate 21-1, and a second outer plate 22-2 is disposed on the outer wall of the second inner plate 21-2. The first inner plate 21-1 and the second inner plate 21-2 are sealed and spliced ​​(welded) to form the inner plate 21. This design allows the welds of the inner plate in contact with materials to be exposed, and if damaged, they can be repaired by welding from the outside. The welds of the raw water jacket are not exposed, and if damaged, they cannot be repaired by welding.

[0029] Both high-temperature section 1 and low-temperature section 2 are cylindrical structures. They can be integrally connected, with the lower end of high-temperature section 1 and the upper end of low-temperature section 2 sealed together by a flange. Alternatively, high-temperature section 1 and low-temperature section 2 can be separate structures, making on-site connection, transportation, and installation more convenient.

[0030] The first inlet 4, the first outlet 5, the second inlet 11-1, and the second outlet 11-2 are all connected to the external steam drum.

[0031] The working process and principle of the cooling device of this utility model are as follows:

[0032] The carbon particles first fall into the high-temperature section 1, where they fall and cool down and release heat within the cavity enclosed by the square coil. The circulating water in the heat exchange tube 11 is forced to flow under the drive of the circulating pump and absorbs heat to generate steam, effectively utilizing the residual heat of the high-temperature carbon calcined coke particles.

[0033] The particles then fall into the low-temperature section 2, where cold water enters from the first inlet 4. It flows upwards in the jacket space formed by the first outer plate 22-1 and the first inner plate 21-1, then flows at high speed from the connecting pipe 3 into the jacket space formed by the second outer plate 22-2 and the second inner plate 21-2. The water continues to flow upwards and finally exits from the first outlet 5. During this flow, the cooling water absorbs the heat from the falling particles, recovering the heat. Thus, when using the original circulating cooling water system, with the circulating water flow rate remaining constant, the water velocity in this jacket is twice that of the original water jacket, effectively reducing the deposition of scale in the jacket. The high-speed water flow can carry away retained steam and released oxygen from the jacket, preventing oxygen corrosion, improving cooling capacity, and extending the service life of the water jacket.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving high-temperature carbon calcined coke particle cooling device, characterized in that, It includes a high-temperature section (1) for steam generation at the top and a low-temperature section (2) for hot water generation at the bottom; the high-temperature section is formed by coiling heat exchange tubes, and steam is generated inside the heat exchange tubes; the low-temperature section (2) is composed of an inner plate (21) and an outer plate (22), the outer plate (22) includes a first outer plate (22-1) and a second outer plate (22-2), which are independently set on the outer wall of the inner plate (21) and form independent heat exchange spaces with the inner plate (21) respectively. The two heat exchange spaces are connected by an external connecting pipe (3); one of the first outer plate (22-1) and the second outer plate (22-2) is provided with a water inlet, and the other outer plate is provided with a water outlet.

2. The energy-saving high-temperature carbon calcined coke particle cooling device according to claim 1, characterized in that, The first outer plate (22-1) has a first water inlet (4) near the bottom, and the second outer plate (22-2) has a first water outlet (5) near the top. The upper end of the connecting pipe (3) is connected to the side wall of the first outer plate (22-1) near the top, and the lower end is connected to the side wall of the second outer plate (22-2) near the bottom.

3. The energy-saving high-temperature carbon calcined coke particle cooling device according to claim 1, characterized in that, The inner panel (21) includes a first inner panel (21-1) and a second inner panel (21-2). The first outer panel (22-1) is disposed on the outer wall of the first inner panel (21-1), and the second outer panel (22-2) is disposed on the outer wall of the second inner panel (21-2). The first inner panel (21-1) and the second inner panel (21-2) are sealed and spliced ​​together to form the inner panel (21).

4. The energy-saving high-temperature carbon calcined coke particle cooling device according to claim 1, characterized in that, The high-temperature section (1) is formed by coiling heat exchange tubes (11), with one end of the heat exchange tubes (11) being the second water inlet (11-1) and the other end being the second water outlet (11-2).

5. The energy-saving high-temperature carbon calcined coke particle cooling device according to claim 1, characterized in that, The diameter of the connecting pipe (3) is selected to allow the water flow velocity in the pipe to reach more than 1 m / s.

6. The energy-saving high-temperature carbon calcined coke particle cooling device according to claim 1, characterized in that, Both the high-temperature section (1) and the low-temperature section (2) are cylindrical structures.

7. The energy-saving high-temperature carbon calcined coke particle cooling device according to claim 1, characterized in that, The lower end of the high-temperature section (1) and the upper end of the low-temperature section (2) are connected by a flange seal.

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