A lime kiln spray gun cooling system

Abstract

This utility model discloses a lime kiln spray gun cooling system, including at least one double-chamber lime kiln and at least one cooling system. The cooling system includes a first fan and a second fan. The outlet of the first fan is connected to a branch pipe via a main pipe, and the outlet of the second fan is connected to the branch pipe via a secondary pipe. Arc-shaped pipes are connected to both ends of the branch pipes. Annular pipes are fixed to the top of each of the two chambers of the double-chamber lime kiln. The ends of the arc-shaped pipes are connected to the annular pipes. Several air outlet pipes are arranged along the circumference of the annular pipes, and these outlet pipes are connected to the spray gun cooling ports. Three valves are installed on the branch pipes. Advantages: Two fans provide sufficient airflow, and the airflow is distributed in two separate paths via branch pipes to the spray guns in the double-chamber lime kiln, improving ventilation efficiency. The dual-path airflow to the spray guns in the kiln chambers of the lime kiln accelerates cooling.

Description

Technical Field

[0001] This utility model relates to the field of lime kiln spray gun cooling technology, specifically to a lime kiln spray gun cooling system. Background Technology

[0002] The Maeltz double-chamber lime kiln is a type of lime kiln. The double-chamber lime kiln is designed with two kiln chambers and adopts a heat storage and heat exchange system. The bottom of the calcination zone of the two kiln chambers is connected to each other through a channel. The two kiln bodies alternately calcin and preheat the ore, so that the heat contained in the flue gas can be effectively recovered and utilized. After heat exchange, the flue gas is discharged at a low temperature, realizing that one is a combustion chamber and the other is a heat storage chamber. After 12-16 minutes, the two chambers start to switch directions, and the functions of the two kiln chambers are interchanged. This cycle repeats, and the lime kiln can produce continuously.

[0003] When the combustion chamber is converted into a regenerator chamber, cooling gas needs to be introduced into its spray guns. The cooling gas replaces the coal gas to cool the spray guns and prevent them from overheating and being damaged. Existing double-chamber lime kilns consist of two units, each with a corresponding cooling gas system. Each cooling gas system is directly split into two paths by a single duct, connecting to the spray guns on the two chambers of one double-chamber lime kiln. However, the single duct has low ventilation efficiency and weak cooling effect, failing to provide rapid cooling. Furthermore, the single fan supply is insufficient for cooling gas supply. Secondly, double-chamber lime kilns use various fuels, including pulverized coal and coal gas. When changing fuels, both spray guns on both chambers need to be cooled simultaneously, which the single duct split design cannot achieve. Utility Model Content

[0004] The purpose of this invention is to provide a cooling system for a lime kiln spray gun.

[0005] This utility model is implemented by the following technical solution:

[0006] A lime kiln spray gun cooling system includes at least one double-chamber lime kiln and at least one cooling system. The cooling system includes a first fan and a second fan. The outlet of the first fan is connected to a branch pipe via a main pipe, and the outlet of the second fan is connected to the branch pipe via a secondary pipe. Arc-shaped pipes are connected to both ends of the branch pipes. Annular pipes are fixed to the top of both chambers of the double-chamber lime kiln. The ends of the arc-shaped pipes are connected to the annular pipes. Several air outlet pipes are arranged along the circumference of the annular pipes, and these outlet pipes are connected to the spray gun cooling ports. Three valves are provided on the branch pipes, respectively located between the main pipe and the secondary pipe, between the main pipe and any of the arc-shaped pipes, and between the secondary pipe and another arc-shaped pipe.

[0007] Preferably, it also includes a backup fan, the outlet of which is connected to the branch pipe via the main pipe.

[0008] Preferably, it also includes an air volume sensor, with the air volume sensor installed at both ends of the branch pipe.

[0009] The advantages of this utility model are as follows: By using two fans, No. 1 and No. 2, sufficient airflow is ensured. The airflow is distributed through the main pipe and the auxiliary pipe, and then through the branch pipe to the double-chamber spray gun of the lime kiln, which improves the ventilation efficiency. It can blow air into the kiln chamber of a lime kiln from two different sources. The strong airflow accelerates the cooling of the spray gun. Secondly, by closing the valve in the middle of the branch pipe, the spray guns on both kiln chambers can be cooled at the same time. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 yes Figure 1 A magnified view of part A in the diagram.

[0013] Figure 3 yes Figure 1 Top view.

[0014] In the diagram: 1. Double-chamber lime kiln; 2. Cooling system; 3. No. 1 fan; 4. No. 2 fan; 5. Main pipe; 6. Auxiliary pipe; 7. Branch pipe; 8. Arc-shaped pipe; 9. Ring pipe; 10. Air outlet pipe; 11. Spray gun cooling port; 12. Valve; 13. Backup fan; 14. Air volume sensor. Detailed Implementation

[0015] 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.

[0016] like Figure 1 , Figure 2 , Figure 3As shown, a lime kiln spray gun cooling system includes at least one double-chamber lime kiln 1 and at least one cooling system 2. The cooling system 2 includes a first fan 3 and a second fan 4. The air outlet of the first fan 3 is connected to a branch pipe 7 through a main pipe 5. The air outlet of the second fan 4 is connected to the branch pipe 7 through a secondary pipe 6. Arc-shaped pipes 8 are connected to both ends of the branch pipe 7. Annular pipes 9 are fixed to the top of the double chambers of the double-chamber lime kiln 1. The two ends of the arc-shaped pipes 8 are connected to the annular pipes 9. Several air outlet pipes 10 are provided along the circumference of the annular pipes 9. The air outlet pipes 10 are connected to the spray gun cooling port 11.

[0017] In this embodiment, two double-chamber lime kilns 1 and two sets of cooling systems 2 are symmetrically arranged. Each set of cooling systems 2 corresponds to one double-chamber lime kiln 1. In one set of cooling systems 2, the No. 1 fan 3 provides the main air source, while the No. 2 fan 4 serves as a supplementary air source. Both can blow out air to form low-temperature gas. The low-temperature gas enters the branch pipe 7 through the main pipe 5 and is blown to the top of the double chambers of the double-chamber lime kiln 1 through the branch pipe 7. The gas is supplied through the arc-shaped pipe 8 and distributed evenly through the ring pipe 9, so that the low-temperature gas enters each spray gun through several air outlet pipes 10.

[0018] Three valves 12 are installed on the branch pipeline 7. The three valves 12 are respectively located between the main pipeline 5 and the auxiliary pipeline 6, between the main pipeline 5 and any arc-shaped pipeline 8, and between the auxiliary pipeline 6 and another arc-shaped pipeline 8. When the valve 12 between the main pipeline 5 and the auxiliary pipeline 6 is closed and the other valves 12 are opened, the low-temperature gas is supplied to the top of the double chambers of the double-chamber lime kiln 1 in two separate streams. When the valve 12 between the main pipeline 5 and the adjacent arc-shaped pipeline 8 is closed and the other valves 12 are opened, the low-temperature gas is supplied to the top of one of the double chambers of the double-chamber lime kiln 1 in two separate streams. When the valve 12 between the auxiliary pipeline 6 and another arc-shaped pipeline 8 is closed and the other valves 12 are opened, the low-temperature gas is supplied to the top of the other double chamber of the double-chamber lime kiln 1 in two separate streams. When any valve 12 between the main pipeline 5 and the adjacent arc-shaped pipeline 8 or between the auxiliary pipeline 6 and another arc-shaped pipeline 8 is closed, and then the valve 12 between the main pipeline 5 and the auxiliary pipeline 6 is closed, the main pipeline 5 or the auxiliary pipeline 6 becomes a unidirectional, single-chamber gas supply.

[0019] It also includes a backup fan 13. The air outlet of the backup fan 13 is connected to the branch pipe 7 through the main pipe 5. The backup fan 13 and the No. 1 fan 3 are used in a standby configuration.

[0020] It also includes an air volume sensor 14. An air volume sensor 14 is installed at both ends of the branch pipe 7. The air volume sensor 14 can monitor the air supply of the double-chamber arc pipe 8 of a double-chamber lime kiln 1.

[0021] Advantages: The system provides sufficient airflow through two fans, No. 1 fan 3 and No. 2 fan 4. The airflow is distributed through the main pipe 5 and the auxiliary pipe 6, and then through the branch pipe 7 to the double-chamber spray guns of the lime kiln, which improves ventilation efficiency. It can blow air into the kiln chamber of a lime kiln from two different sources, and the strong airflow accelerates cooling. Secondly, when the valve 12 in the middle of the branch pipe 7 is closed, the spray guns on both kiln chambers can be cooled at the same time.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling system for a lime kiln spray gun, characterized in that, The system includes at least one double-chamber lime kiln and at least one cooling system. The cooling system includes a first fan and a second fan. The outlet of the first fan is connected to a branch pipe via a main pipe, and the outlet of the second fan is connected to the branch pipe via a secondary pipe. Arc-shaped pipes are connected to both ends of the branch pipes. Annular pipes are fixed to the top of each of the two chambers of the double-chamber lime kiln. The two ends of the arc-shaped pipes are connected to the annular pipes. Several air outlet pipes are arranged along the circumference of the annular pipes, and these outlet pipes are connected to the cooling ports of the spray guns. Three valves are installed on each branch pipe, located between the main pipe and the secondary pipe, between the main pipe and any of the arc-shaped pipes, and between the secondary pipe and another arc-shaped pipe.

2. The lime kiln spray gun cooling system according to claim 1, characterized in that: It also includes a backup fan, the outlet of which is connected to the branch pipe via the main pipe.

3. The lime kiln spray gun cooling system according to claim 1, characterized in that: It also includes an air volume sensor, with the air volume sensor installed at both ends of the branch pipe.

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