CN218295679U - Carbon calciner high-temperature calcined coke waste heat recovery device and system - Google Patents

Abstract

The utility model discloses a carbon calciner high-temperature calcined coke waste heat recovery device and a system, which are of a vertical structure and are sequentially provided with a feeding section, an evaporation section and a deep cooling section from top to bottom, wherein the evaporation section comprises an annular water supply pipe, a plurality of evaporation pipes and a steam collecting pipe, and the plurality of evaporation pipes are vertically arranged on the water supply pipe in parallel to form a water-cooled wall and enclose a cooling cavity; the steam collecting pipe is positioned above the evaporating pipes and is communicated with each evaporating pipe; the deep cooling section comprises a deep cooling sleeve, the deep cooling sleeve is enclosed into a deep cooling cavity, and an inlet and an outlet are arranged on the deep cooling sleeve. The feed pipe is located the bottom, and high temperature is forged the back burnt and is added from the top, and the cooling water is from up rising gradually, and high temperature is forged the back burnt top-down and is cooled down gradually, utilizes hottest high temperature to forge back burnt steam generation, can effectively improve the production volume and the steam temperature of steam.

Description

A waste heat recovery device and system for high-temperature calcined coke in a carbon calciner

technical field

The utility model belongs to the technical field of waste heat utilization of a carbon calciner, in particular to a waste heat recovery device and system for high-temperature calcined coke in a carbon calciner.

Background technique

The statements herein only provide background technology related to the present invention and do not necessarily constitute prior art.

There is a high-temperature calcination link in the carbon production process. The temperature of the coke after high-temperature calcination when it leaves the calcination process is generally around 800-1000°C, which contains a lot of heat. At present, the cooling method of high-temperature calcined coke is generally to use circulating water to cool it, and then transport the heated circulating water to an air cooling tower for air cooling, and the cooled circulating water to circulate and cool high-temperature calcined coke.

This cooling method mainly has the following two problems: (1) the heat carried by the high-temperature calcined coke is not recycled and is completely wasted; (2) the cooling process of the high-temperature calcined coke needs to evaporate a large amount of circulating cooling water, resulting in a large amount of Cooling water consumption.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a waste heat recovery device and system for high-temperature calcined coke in a carbon calciner.

In order to achieve the above object, the utility model is realized through the following technical solutions:

In the first aspect, the utility model provides a carbon calciner high-temperature calcined coke waste heat recovery device, which is a vertical structure, and consists of a feeding section, an evaporation section and a cryogenic section from top to bottom, wherein,

The evaporating section includes an annular water supply pipe, several evaporating pipes and steam collecting pipes, and several evaporating pipes are vertically installed on the water supply pipes side by side to form a water wall and enclose a cooling cavity; the steam collecting pipes are located above the evaporating pipes, and Connected with each evaporation tube;

The cryogenic section includes a cryogenic jacket that encloses a cryogenic cavity, and the cryogenic jacket is provided with an inlet and an outlet.

In the second aspect, the utility model provides a waste heat recovery system for high-temperature calcined coke in a carbon calciner, including the evaporative cooling device, oxygen removal device, steam-water separation device and superheating device;

The inlet of the cryojacket of the evaporative cooling device is connected to the soft water inlet pipe, the outlet of the cryojacket is connected to the water supply pipe of the evaporation section through the oxygen removal device, the outlet of the air collecting pipe is connected to the inlet of the steam-water separation device, and the outlet of the steam-water separation device is connected to the Overheating device connection.

The beneficial effects obtained by one or more embodiments of the utility model described above are as follows:

High-temperature calcined coke is added from above, and its high temperature heats the cooling water in the evaporation tube, and the cooling water is heated to form steam, which can be used for other purposes (for example, it can be sent to the steam pipe network or used for steam turbines to drive water pumps, fans, etc. ), avoiding the consumption of cooling water, reducing the power consumption of the whole plant, reducing the production cost of the enterprise, increasing the market competitiveness of the product, and improving the enterprise's benefit.

The setting of the steam collecting pipe facilitates the collection of the generated steam and facilitates the discharge of the steam.

The water supply pipe is located at the bottom, the high-temperature calcined coke is fed from above, the cooling water gradually heats up from bottom to top, and the high-temperature calcined coke gradually cools down from top to bottom. Using the hottest high-temperature calcined coke to generate steam can effectively increase the generation of steam volume and steam temperature.

A cryogenic section is set below the evaporating section for cryogenic treatment of high-temperature calcined coke to improve the utilization rate of waste heat of high-temperature calcined coke, and at the same time preheat the cooling water to increase steam generation.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model.

Fig. 1 is a front view schematic diagram of an evaporative cooling device according to one or more embodiments of the present invention;

Fig. 2 is a side view structural schematic diagram of an evaporative cooling device according to one or more embodiments of the present invention;

Fig. 3 is a schematic structural view of a waste heat utilization system of calcined coke according to one or more embodiments of the present invention.

In the figure, 1. Feed section; 2- Exhaust pipe; 3- Evaporation pipe; 4- Water supply pipe; 5- Cryogenic jacket; 6- Cryogenic cavity; 7- Superheating device; Evaporative cooling device; 10-deoxygenation device.

detailed description

It should be pointed out that the following detailed descriptions are all exemplary and are intended to provide further description of the present utility model. Unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

In the first aspect, the utility model provides a carbon calciner high-temperature calcined coke waste heat recovery device, which is a vertical structure, and consists of a feeding section, an evaporation section and a cryogenic section from top to bottom, wherein,

The evaporating section includes an annular water supply pipe, several evaporating pipes and steam collecting pipes, and several evaporating pipes are vertically installed on the water supply pipes side by side to form a water wall and enclose a cooling cavity; the steam collecting pipes are located above the evaporating pipes, and Connected with each evaporation tube;

The cryogenic section includes a cryogenic jacket that encloses a cryogenic cavity, and the cryogenic jacket is provided with an inlet and an outlet.

In some embodiments, two adjacent evaporation tubes are connected by a plate. In order to play a good reinforcement effect.

Preferably, the plate body is a hollow plate body. The evaporating tubes are connected through hollow plates to ensure that the liquid level in each evaporating tube is consistent, thereby improving the controllability of the water supply.

In some embodiments, part or all of the evaporation tubes are provided with fins, and the fins are arranged along the generatrix of the evaporation tubes.

The arrangement of the fins can effectively increase the heat exchange area and improve the heat exchange efficiency.

In some embodiments, the outlet of the cryogenic chamber has a reduced-diameter structure. The cryogenic cavity has a necking structure, which facilitates the effective control of the discharge speed of the cooled calcined coke, which in turn helps to increase the residence time of the calcined coke in the evaporative cooling device to ensure the efficiency of waste heat recovery.

Preferably, the cryogenic chamber is a funnel-shaped structure.

In some embodiments, the outer side of the water cooling wall is provided with a casing. The arrangement of the casing is convenient for supporting and protecting the water cooling wall.

In some embodiments, the material of the feed section is a high temperature resistant material.

Preferably, the feeding section has an enlarged diameter structure, which is convenient for feeding.

In the second aspect, the utility model provides a waste heat recovery system for high-temperature calcined coke in a carbon calciner, including the evaporative cooling device, oxygen removal device, steam-water separation device and superheating device;

The inlet of the cryojacket of the evaporative cooling device is connected to the soft water inlet pipe, the outlet of the cryojacket is connected to the water supply pipe of the evaporation section through the oxygen removal device, the outlet of the air collecting pipe is connected to the inlet of the steam-water separation device, and the outlet of the steam-water separation device is connected to the Overheating device connection.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Example 1

As shown in Figure 1 and Figure 2, a waste heat recovery device for high-temperature calcined coke in a carbon calcination furnace is a vertical structure, and it consists of a feeding section 1, an evaporation section and a cryogenic section from top to bottom, wherein the The evaporating section includes an annular water supply pipe 4, several evaporating pipes 3 and steam collecting pipes, and several evaporating pipes 3 are installed vertically on the water supply pipe 4 side by side to form a water wall and enclose a cooling cavity; above, and communicated with each evaporation tube 3; the cryogenic section includes a cryogenic jacket 5, which encloses a cryogenic chamber 6, and is provided with an inlet and an outlet on the cryogenic jacket 5.

Two adjacent evaporating tubes 3 are connected by a plate body, and the plate body is a hollow plate body, and the evaporating tubes 3 are connected to each other by using the hollow plate body. The evaporating tubes 3 are connected through hollow plates to ensure that the liquid levels in each evaporating tube 3 are consistent, thereby improving the controllability of water supply. The plate body has a certain thickness and is used to reinforce the evaporation tube 3 .

Part of the evaporating tubes 3 is provided with fins, and the fins are arranged along the generatrix of the evaporating tubes 3 , that is, the plates of the fins 7 are arranged parallel to the generatrix of the evaporating tubes 3 . The arrangement of the fins can effectively increase the heat exchange area and improve the heat exchange efficiency.

The cryogenic chamber 6 is a funnel-shaped structure as a whole, and the cross-sectional area of the small-diameter end and the large-diameter end is prepared as 1:4. A casing is arranged on the outside of the water cooling wall, and the casing is arranged close to the water cooling wall. The material of the feeding section is a high temperature resistant material, and the feeding section is set as an enlarged diameter structure, which is convenient for feeding.

Example 2

As shown in Figure 3, the waste heat recovery system for high-temperature calcined coke in a carbon calciner includes the evaporative cooling device 9, the oxygen removal device 10, the steam-water separation device 8 and the superheating device 7;

The inlet of the cryojacket 5 of the evaporative cooling device 9 is connected to the soft water inlet pipe, the outlet of the cryojacket 5 is connected to the water supply pipe of the evaporation section through the oxygen removal device 10, and the outlet of the gas collecting pipe is connected to the inlet of the steam-water separation device 8, and the steam-water separation The outlet of the device 8 is connected with the superheating device 7 .

The high-temperature calcined coke enters from the entrance of the evaporative cooling device 9, and in the evaporative cooling device 9, the high-temperature calcined coke exchanges heat with the cooling water in the evaporation section. After the calcined coke comes out of the evaporating section, it enters the lower cryogenic section, and then exchanges heat with the cooling medium in the cryogenic jacket 5 of the cryogenic section to absorb the heat of the calcined coke at medium and low temperatures, and the soft water is heated and sent to the deaeration The device 10 performs deoxygenation, and the deoxygenated medium enters the upper evaporation section. After the soft water enters the upper evaporating section, it exchanges heat with high-temperature calcined coke, and the medium evaporates into a steam-water mixture, which is led to the steam-water separation element through the pipeline, separated by the steam-water separation device 8, and then sent to the superheating device 7, and then sent to the superheating device 7 after being heated by the heating device 7. To the steam pipe network or for the steam turbine to drive the water pump, fan, etc.

The soft water deoxidized by the deaeration device 10 can also exchange heat with the steam-water-water mixture in the steam-water separation device. After being further heated, the soft water enters the evaporative cooling device 9 to cool the high-temperature calcined coke. The steam in the steam-water mixture is further condensation.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A waste heat recovery device for high-temperature calcined coke in a carbon calciner, characterized in that: it is a vertical structure, and there are feeding section, evaporation section and cryogenic section successively from top to bottom, wherein, The evaporating section includes an annular water supply pipe, several evaporating pipes and steam collecting pipes, and several evaporating pipes are vertically installed on the water supply pipes side by side to form a water wall and enclose a cooling cavity; the steam collecting pipes are located above the evaporating pipes, and Connected with each evaporation tube; The cryogenic section includes a cryogenic jacket that encloses a cryogenic cavity, and the cryogenic jacket is provided with an inlet and an outlet. 2. The waste heat recovery device for high-temperature calcined coke in a carbon calciner according to claim 1, characterized in that two adjacent evaporation tubes are connected by plates. 3. The waste heat recovery device for high-temperature calcined coke in a carbon calciner according to claim 2, wherein the plate body is a hollow plate body. 4. The waste heat recovery device for high-temperature calcined coke in a carbon calciner according to claim 1, wherein fins are arranged on part or all of the evaporator tubes, and the fins are arranged along the generatrix of the evaporator tubes. 5. The waste heat recovery device for high-temperature calcined coke in a carbon calciner according to claim 1, characterized in that: the outlet of the cryogenic chamber is a diameter-reducing structure. 6. The waste heat recovery device for high-temperature calcined coke in a carbon calciner according to claim 5, characterized in that: the cryogenic chamber is a funnel-shaped structure. 7 . The waste heat recovery device for high-temperature calcined coke in a carbon calciner according to claim 1 , characterized in that: a casing is provided outside the water-cooled wall. 8. The waste heat recovery device for high-temperature calcined coke in a carbon calciner according to claim 1, characterized in that: the material of the feeding section is a high-temperature-resistant material. 9. The waste heat recovery device for high-temperature calcined coke in a carbon calciner according to claim 1, characterized in that: the feed section is an enlarged diameter structure. 10. A carbon calciner high-temperature calcined coke waste heat recovery system, characterized in that it comprises a carbon calciner high-temperature calcined coke waste heat recovery device, an oxygen removal device, a steam-water separation device and overheating device; The inlet of the cryojacket of the evaporative cooling device is connected to the soft water inlet pipe, the outlet of the cryojacket is connected to the water supply pipe of the evaporation section through the oxygen removal device, the outlet of the air collecting pipe is connected to the inlet of the steam-water separation device, and the outlet of the steam-water separation device is connected to the Overheating device connection.

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