Heat recovery coke oven top heat preservation structure

Abstract

The utility model belongs to the technical field of coke ovens, and particularly relates to a heat recovery coke oven top heat preservation structure which comprises an oven body with an oven top, a heat preservation layer used for heat preservation is arranged at the bottom of the oven top, a coil pipe covered with the heat preservation layer is evenly wound in the oven top, and a hot water tank for storing hot water is arranged outside the oven body. A liquid supply mechanism used for liquid circulation is arranged between the hot water tank and the two ends of the coil pipe, the heat preservation layer is in a constant-temperature state based on liquid circulation, the hot water tank is sequentially provided with a tap water pipeline and a heat supply pipeline from top to bottom, and the tap water pipeline is used for supplying tap water to the hot water tank. The coil pipe covering the outer side of the heat preservation layer is additionally arranged, and the hot water tank circularly supplies liquid in the coil pipe through the liquid supply mechanism, so that the heat preservation layer is always in a constant temperature, the heat preservation layer is prevented from being in a high-temperature environment for a long time, and the service life of the heat preservation layer is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of coke oven technology, specifically relating to a heat recovery coke oven top insulation structure. Background Technology

[0002] A coke oven consists of a carbonization chamber, a combustion chamber, a regenerator, an inclined zone, a roof, a flue, and a chimney.

[0003] Coke oven production generates high-temperature flue gas. The heat generated by this flue gas is ultimately dissipated into the air through the oven roof and oven doors, resulting in a significant waste of thermal energy. Generally, an insulation system is installed on the oven roof for heat preservation. Existing insulation systems typically reduce heat transfer and loss by decreasing the heat transfer area and the thermal conductivity of the materials. However, existing insulation systems cannot effectively utilize the accumulated heat. Furthermore, prolonged exposure to high temperatures affects the lifespan of the insulation material, requiring periodic removal and replacement, leading to high manufacturing costs and time-consuming maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide a heat recovery coke oven top insulation structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat recovery coke oven top insulation structure, comprising: a furnace body with a furnace top, an insulation layer for heat preservation at the bottom of the furnace top, a coiled tube covering the insulation layer evenly wound in the furnace top, a hot water tank for storing hot water provided outside the furnace body, and a liquid supply mechanism for liquid circulation provided between the hot water tank and both ends of the coiled tube, thereby keeping the insulation layer at a constant temperature based on liquid circulation.

[0006] Preferably, the hot water tank is provided with a tap water pipe and a heating pipe from top to bottom. The tap water pipe is used to supply tap water to the hot water tank, and the heating pipe is used to supply hot water to the outside.

[0007] Preferably, the liquid supply mechanism includes a water supply pipe, a return water pipe, and a high-temperature resistant water pump. One end of the water supply pipe and the return water pipe are respectively connected to both ends of the coil. The ends of the water supply pipe and the return water pipe away from the coil both extend into the hot water tank, and one end of the water supply pipe extends to the bottom of the hot water tank. One end of the return water pipe is located at the top of the hot water tank, and the high-temperature resistant water pump is installed on the water supply pipe.

[0008] Preferably, a first liquid level sensor and a second liquid level sensor for liquid detection are arranged sequentially from top to bottom on the inner wall of the hot water tank, and the bottom end of the water supply pipe is located below the second liquid level sensor.

[0009] Preferably, the hot water tank is further provided with a temperature sensor for temperature detection, and the temperature sensor is located below the second liquid level sensor.

[0010] Preferably, the furnace top has an inner cavity for accommodating the coil, and the side of the inner cavity away from the insulation layer is covered with a heat insulation layer.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] (1) By adding a coil covering the outside of the insulation layer, the hot water tank circulates the liquid in the coil through the liquid supply mechanism, so that the insulation layer is always at a constant temperature, avoiding the insulation layer being in a high temperature environment for a long time and improving the service life of the insulation layer.

[0013] (2) By adding a tap water pipe and a heating pipe, the present invention can supply tap water to the hot water tank through the tap water pipe and reuse the stored heat energy through the heating pipe, thereby improving the energy utilization rate. Attached Figure Description

[0014] Figure 1 This is a front view of the present invention;

[0015] Figure 2 This is a cross-sectional view of the hot water tank of this utility model;

[0016] Figure 3 This is a cross-sectional view of the furnace top and coil of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the water supply pipe, coil, return pipe and inner cavity of this utility model;

[0018] In the diagram: 1. Hot water tank; 2. Heating pipe; 3. Tap water pipe; 4. High-temperature water pump; 5. Water supply pipe; 6. Water return pipe; 7. Furnace top; 8. Insulation layer; 9. Furnace body; 10. First liquid level sensor; 11. Inner cavity; 12. Insulation layer; 13. Coil; 14. Second liquid level sensor; 15. Temperature sensor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] refer to Figure 1 and Figure 3-4As shown, the present invention provides a heat recovery coke oven top insulation structure, comprising: a furnace body 9 with a furnace top 7, an insulation layer 8 for heat preservation at the bottom of the furnace top 7, a coil 13 covering the insulation layer 8 evenly wound in the furnace top 7, a hot water tank 1 for storing hot water on the outside of the furnace body 9, and a liquid supply mechanism for liquid circulation between the hot water tank 1 and both ends of the coil 13, so that the insulation layer 8 is kept at a constant temperature based on the liquid circulation.

[0021] Combination Figure 1-3 As shown, the liquid supply mechanism includes a water supply pipe 5, a return water pipe 6, and a high-temperature resistant water pump 4. One end of the water supply pipe 5 and the return water pipe 6 are respectively connected to the two ends of the coil 13. The ends of the water supply pipe 5 and the return water pipe 6 away from the coil 13 both extend into the hot water tank 1, and one end of the water supply pipe 5 extends to the bottom of the hot water tank 1. One end of the return water pipe 6 is set at the top of the hot water tank 1. The high-temperature resistant water pump 4 is installed on the water supply pipe 5.

[0022] As described above, when using the furnace body 9, furnace top 7, hot water tank 1, liquid supply mechanism and coil 13 provided by this utility model, before using the furnace body 9, the high temperature resistant water pump 4 is started, and the liquid in the hot water tank 1 circulates between the water supply pipe 5, coil 13, return water pipe 6 and hot water tank 1. At this time, the furnace body 9 is started, and the high temperature generated is confined in the furnace body 9 by the insulation layer 8. Through the circulation of liquid in the coil 13, the insulation layer 8 is kept in a constant temperature environment, which improves the service life of the insulation layer 8. At the same time, the heat dissipated by the insulation layer 8 is stored by the high temperature liquid, which is convenient for later use.

[0023] Furthermore, in order to reduce heat loss in coil 13, refer to Figure 3-4 As shown, the furnace top 7 has an inner cavity 11 for accommodating the coil 13, and a heat insulation layer 12 is laid on the side of the inner cavity 11 away from the heat insulation layer 8. The heat insulation layer 12 prevents heat from the coil 13 from escaping outward.

[0024] In this utility model, combined with Figure 1-2 As shown, the hot water tank 1 in this embodiment is provided with a tap water pipe 3 and a heating pipe 2 from top to bottom. The tap water pipe 3 is used to supply tap water to the hot water tank 1, and the heating pipe 2 is used to supply hot water to the outside.

[0025] As described above, using the water supply pipe 3 and heating pipe 2 provided by this utility model, the water temperature in the hot water tank 1 can be cooled through the water supply pipe 3, and liquid can be added to the hot water tank 1 through the water supply pipe 3. The hot water in the hot water tank 1 can be discharged out through the heating pipe 2 for secondary utilization of heat energy.

[0026] Furthermore, to facilitate automatic control of the liquid level in hot water tank 1, refer to Figure 2As shown, a first liquid level sensor 10 and a second liquid level sensor 14 for liquid detection are sequentially arranged from top to bottom on the inner wall of the hot water tank 1. The bottom end of the water supply pipe 5 is located below the second liquid level sensor 14. When the liquid level in the hot water tank 1 drops below the second liquid level sensor 14, the heating pipe 2 is closed and the tap water pipe 3 is opened, allowing the liquid level in the hot water tank 1 to reach the first liquid level sensor 10. At this time, the tap water pipe 3 is closed. Repeating the above steps can complete the automatic replenishment and adjustment of the liquid level in the hot water tank 1.

[0027] Furthermore, to facilitate the detection of the temperature of the liquid in hot water tank 1, refer to Figure 2 As shown, the hot water tank 1 is also equipped with a temperature sensor 15 for temperature detection, and the temperature sensor 15 is located below the second liquid level sensor 14. When the temperature sensor 15 detects that the temperature is too high, both the tap water pipe 3 and the heating pipe 2 are opened to regulate the water temperature in the hot water tank 1. When the water temperature reaches the threshold, both the tap water pipe 3 and the heating pipe 2 are closed.

[0028] 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. A heat recovery coke oven roof insulation structure, characterized in that, include: A furnace body (9) with a furnace top (7) is provided with a heat insulation layer (8) for heat preservation at the bottom of the furnace top (7). A coil (13) covering the heat insulation layer (8) is evenly wound in the furnace top (7). A hot water tank (1) for storing hot water is provided on the outside of the furnace body (9). A liquid supply mechanism for liquid circulation is provided between the hot water tank (1) and the two ends of the coil (13). The heat insulation layer (8) is kept at a constant temperature based on the liquid circulation.

2. The heat recovery coke oven roof insulation structure according to claim 1, characterized in that: The hot water tank (1) is provided with a tap water pipe (3) and a heating pipe (2) from top to bottom. The tap water pipe (3) is used to supply tap water to the hot water tank (1), and the heating pipe (2) is used to supply hot water to the outside.

3. The heat recovery coke oven roof insulation structure according to claim 1, characterized in that: The liquid supply mechanism includes a water supply pipe (5), a return water pipe (6), and a high-temperature resistant water pump (4). One end of the water supply pipe (5) and the return water pipe (6) are respectively connected to the two ends of the coil (13). The ends of the water supply pipe (5) and the return water pipe (6) away from the coil (13) both extend into the hot water tank (1). One end of the water supply pipe (5) extends to the bottom of the hot water tank (1). One end of the return water pipe (6) is set at the top of the hot water tank (1). The high-temperature resistant water pump (4) is installed on the water supply pipe (5).

4. The heat recovery coke oven roof insulation structure according to claim 3, characterized in that: The inner wall of the hot water tank (1) is provided with a first liquid level sensor (10) and a second liquid level sensor (14) for liquid detection from top to bottom, and the bottom end of the water supply pipe (5) is located below the second liquid level sensor (14).

5. The heat recovery coke oven roof insulation structure according to claim 1, characterized in that: The hot water tank (1) is also provided with a temperature sensor (15) for temperature detection, and the temperature sensor (15) is located below the second liquid level sensor (14).

6. The heat recovery coke oven roof insulation structure according to claim 1, characterized in that: The furnace top (7) has an inner cavity (11) for accommodating the coil (13), and the inner cavity (11) is covered with a heat insulation layer (12) on the side away from the heat insulation layer (8).

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