Grate cooler capable of reducing coal consumption

Abstract

The grate cooler capable of reducing the coal consumption comprises a grate cooler body, a grate bed is installed in the grate cooler body, a waste gas recovery pipe is arranged above the grate bed, the upper end of the waste gas recovery pipe is connected with a heat storage tank, a first conduction pipe is installed in the heat storage tank, the lower end of the first conduction pipe is connected with a pipe opening, and the lower end of the first conduction pipe is connected with a second conduction pipe. A connecting pipe is arranged at the upper end of the first conduction pipe, and the end, away from the first conduction pipe, of the connecting pipe is connected with a second conduction pipe. The first conduction pipe and the second conduction pipe are arranged in the heat storage tank and connected through the connecting pipe, waste gas recycled in the grate cooler can be transmitted through the conduction pipes and discharged out of the outlet pipe, and by means of the heat conduction characteristic of materials of the conduction pipes, heat transfer can be conducted on the recycled waste gas, and meanwhile the waste gas can be recycled. And heat preservation of the interior of the heat storage tank can be achieved, the heat preservation effect of the interior of the heat storage tank is improved, heat loss is reduced, and heat can be better recycled.

Description

TECHNICAL FIELD

[0001] The utility model relates to grate cooler technical field, concretely is a grate cooler that can reduce coal consumption. BACKGROUND

[0002] Grate cooler is the important host equipment in cement plant clinker sintering system, lithium salt clinker sintering system, and its main function is to cool cement clinker, lithium salt clinker, and deliver, and provides hot air for rotary kiln and decomposing furnace etc., is the main equipment of sintering system heat recovery, and with the technology upgrading, the fourth generation grate cooler will arrange all the grate plate on a moving plate, and when using, put some pebbles in the inside of the grate plate, realize airflow circulation by the gap between the pebbles, and the pebbles will reduce the temperature of cement to prevent the damage of the grate plate.

[0003] The existing grate cooler is single in the use effect of recycling hot air, adopts primary air duct, secondary recovery pipeline and three times air return pipeline to recycle air and waste air, but the temperature of the recycled air is not high enough, and the actual temperature of the recycled air and the length of the air return pipeline and the recycling process affect the use effect of the recycled hot air, which is not conducive to reducing the coal consumption in the sintering system.

[0004] Therefore, the skilled person in the art provides a grate cooler that can reduce coal consumption to solve the problems raised in the background art. SUMMARY

[0005] The utility model discloses a grate cooler that can reduce coal consumption to solve the problems of the existing grate cooler raised in the background art, such as poor heat recovery and utilization effect, which is not conducive to reducing the coal consumption in the sintering system.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A grate cooler that can reduce coal consumption, comprising: a grate cooler, a grate bed is installed inside the grate cooler, a waste air recovery pipe is arranged above the grate bed, a heat storage tank is connected to the upper end of the waste air recovery pipe, a conduction pipe one is installed inside the heat storage tank, a pipe opening is connected to the lower end of the conduction pipe one, an adapter pipe is arranged at the upper end of the conduction pipe one, a conduction pipe two is connected to the end of the adapter pipe away from the conduction pipe one, an outlet pipe is installed at the upper end of the conduction pipe two, a delivery pipe is connected to the top of the heat storage tank, a connecting pipe is connected to the end of the delivery pipe away from the heat storage tank, a temperature storage box is connected to the delivery pipe through the connecting pipe, and a water tank is installed inside the temperature storage box.

[0008] As a further scheme of the utility model, the right side of the water tank is connected with a docking inlet, the left side of the water tank is connected with a discharge port, and a connecting port is arranged on the waist line of the heat storage tank.

[0009] As a further scheme of the utility model, the surface of the water tank is internally provided with a hole corridor, and two groups of hole corridors are arranged in parallel on the surface of the water tank.

[0010] As a further scheme of the utility model, the first conducting pipe is connected with the waste gas recovery pipe through the pipe opening, and the first conducting pipe is connected with the second conducting pipe through the adapter pipe.

[0011] As a further scheme of the utility model, the second conducting pipe is connected with the conveying pipe through the outlet pipe, and the conveying pipe is connected with the docking inlet on the heat storage tank through the connecting pipe.

[0012] As a further scheme of the utility model, the waste gas recovery pipe is provided with a third return air inlet on one side, and the third return air inlet is connected with the connecting port on the heat storage tank.

[0013] As a further scheme of the utility model, the left side of the grate cooler is provided with a clinker inlet, and a fuel inlet is arranged in the clinker inlet, and a cooling fan is arranged below the grate bed.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. The first conducting pipe and the second conducting pipe are arranged in the heat storage tank, the first conducting pipe and the second conducting pipe are connected through the adapter pipe, the waste gas recovered in the grate cooler is transmitted through the conducting pipe and discharged from the outlet pipe, the heat transfer of the recovered waste gas is realized by using the heat conduction characteristics of the material of the conducting pipe, the heat preservation effect of the heat storage tank is improved, the heat loss is reduced, the heat can be better recovered and utilized, the utilization rate is improved, and the coal consumption of the firing system is reduced;

[0016] 2. The heat storage tank is connected with the heat storage tank through the conveying pipe and the connecting pipe, the water tank is arranged in the heat storage tank, the water tank can be heated, the specific heat capacity of water is large, the temperature can be helped to be increased, the heat loss is reduced when the heat is recovered into the firing system, the heat preservation is realized by means of the temperature of water, the stable heat delivery is ensured, the coal consumption of the firing system is reduced, and the heat recovery and utilization effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structure diagram of a grate cooler capable of reducing coal consumption.

[0018] Fig. 2It is a structure diagram of a heat storage box of a grate cooler capable of reducing coal consumption.

[0019] Fig. 3 It is a structure diagram of a water tank of a grate cooler capable of reducing coal consumption.

[0020] Fig. 4 It is a structure diagram of a connection structure of a first conducting pipe and a second conducting pipe in a heat storage tank of a grate cooler capable of reducing coal consumption.

[0021] In the figure: 1, grate cooler; 2, grate bed; 3, cooling fan; 4, clinker inlet; 5, fuel inlet; 6, three times return air inlet; 7, waste gas recovery pipe; 8, heat storage tank; 801, first conducting pipe; 802, pipe opening; 803, connecting pipe; 804, second conducting pipe; 805, outlet pipe; 9, conveying pipe; 10, connecting pipe; 11, heat storage box; 12, water tank; 13, docking inlet; 14, connecting opening; 15, hole corridor; 16, discharge opening. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figs. 1-4 The embodiment of the present application provides a grate cooler capable of reducing coal consumption, which comprises: a grate cooler 1, a clinker inlet 4 is arranged on the left side of the grate cooler 1, a fuel inlet 5 is arranged in the clinker inlet 4, a cooling fan 3 is arranged below a grate bed 2, the grate bed 2 is arranged in the grate cooler 1, a waste gas recovery pipe 7 is arranged above the grate bed 2, a heat storage tank 8 is connected to the upper end of the waste gas recovery pipe 7, a first conducting pipe 801 is arranged in the heat storage tank 8, a pipe opening 802 is connected to the lower end of the first conducting pipe 801, a connecting pipe 803 is arranged at the upper end of the first conducting pipe 801, a second conducting pipe 804 is connected to the end of the connecting pipe 803 away from the first conducting pipe 801, an outlet pipe 805 is arranged at the upper end of the second conducting pipe 804, a conveying pipe 9 is connected to the top of the heat storage tank 8, a connecting pipe 10 is connected to the end of the conveying pipe 9 away from the heat storage tank 8, a heat storage box 11 is connected to the conveying pipe 9 through the connecting pipe 10, a water tank 12 is arranged in the heat storage box 11, the first conducting pipe 801 is connected to the waste gas recovery pipe 7 through the pipe opening 802, the first conducting pipe 801 is connected to the second conducting pipe 804 through the connecting pipe 803, the second conducting pipe 804 is connected to the conveying pipe 9 through the outlet pipe 805, and the conveying pipe 9 is connected to a docking inlet 13 of the heat storage box 11 through the connecting pipe 10.

[0024] Specifically, the conducting pipe one 801 and the conducting pipe two 804 are arranged in the inside of the heat storage tank 8, the conducting pipe adopts copper pipe material, improves heat conduction, and also improves the heat preservation effect in the inside of the heat storage tank 8, preserves the recovered heat, reduces heat loss, is beneficial to better recycling and utilization, and improves utilization rate.

[0025] The water tank 12 is connected with the docking inlet 13 on the right side and above, is connected with the discharge port 16 on the left side and below, the connecting port 14 is arranged on the waist line of the heat storage tank 11, the hole corridor 15 is arranged in the surface of the water tank 12, and the hole corridor 15 is arranged in parallel on the surface of the water tank 12 in two groups, the waste gas recovery pipe 7 is provided with the third return air port 6 on one side, and the third return air port 6 is connected with the connecting port 14 on the heat storage tank 11.

[0026] Specifically, the third return air port 6 passes through the hole corridor 15 on the surface of the water tank 12, the hole corridor 15 is arranged on the surface of the water tank 12, and the hot gas can be fully contacted with the outer wall of the water tank 12, so that the heating of the water tank 12 is accelerated, the water tank 12 is heated and warmed up in cooperation with the heat storage tank 8, the water tank 12 is arranged in the inside of the heat storage tank 11, the water tank 12 is heated, the specific heat capacity of water is large, the temperature can be further warmed up, and the heat loss is reduced when the heat is recovered into the firing system.

[0027] The conducting pipe one 801 is connected with the waste gas recovery pipe 7 through the pipe port 802, and the conducting pipe one 801 is connected with the conducting pipe two 804 through the adapter pipe 803, the conducting pipe two 804 is connected with the conveying pipe 9 through the outlet pipe 805, and the conveying pipe 9 is connected with the docking inlet 13 on the heat storage tank 11 through the connecting pipe 10.

[0028] Specifically, the conducting pipe one 801 and the conducting pipe two 804 are arranged in the inside of the heat storage tank 8, the conducting pipe adopts copper pipe material, improves heat conduction, and also improves the heat preservation effect in the inside of the heat storage tank 8, preserves the recovered heat, reduces heat loss, is beneficial to better recycling and utilization, and improves utilization rate.

[0029] The working principle of the utility model is: when using the utility model, the cement clinker is poured into the grate bed 2 inside the grate cooler 1 through the clinker inlet 4 for rapid cooling, the heat in the cooling process will realize secondary return air through the clinker inlet 4, and the heat recovery is carried out through the third return air opening 6, secondly, the waste gas heat enters the inside of the heat storage tank 8 through the waste gas recovery pipe 7, the conducting pipe one 801 inside the heat storage tank 8 is connected with the waste gas recovery pipe 7 through the pipe opening 802 and the waste gas will transfer heat from the conducting pipe one 801, and enter the conducting pipe two 804 through the connecting pipe 803, the heat is transported into the temperature storage box 11 through the connection between the conducting pipe two 804 and the conveying pipe 9, thirdly, the water tank 12 inside the temperature storage box 11 is heated through the connection between the third return air opening 6 and the temperature storage box 11, the third return air opening 6 will pass through the hole corridor 15 on the surface of the water tank 12, so that the hot gas can fully contact the outer wall of the water tank 12, and the heating of the water tank 12 is accelerated, through the setting of the conducting pipe one 801 and the conducting pipe two 804 in the heat storage tank 8, the heat recovery is better, the utilization rate is improved, and the temperature of the water is used to realize heat preservation and ensure the stable delivery of the heat, which is beneficial to reduce the coal consumption of the sintering system.

[0030] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A grate cooler capable of reducing coal consumption, characterized in that: include: A grate cooler (1) is provided with a grate bed (2) inside the grate cooler (1), and an exhaust gas recovery pipe (7) is provided above the grate bed (2), the upper end of the exhaust gas recovery pipe (7) is connected to a heat storage tank (8), a conduction pipe (801) is provided inside the heat storage tank (8), and the lower end of the conduction pipe (801) is connected to a pipe opening (802), and a connecting pipe (803) is provided at the upper end of the conduction pipe (801), and the connecting pipe (803) The end away from the first conduction tube (801) is connected to the second conduction tube (804), the upper end of the second conduction tube (804) is installed with an outlet pipe (805), the top of the heat storage tank (8) is connected to the delivery pipe (9), the end of the delivery pipe (9) away from the heat storage tank (8) is connected to the connecting pipe (10), the delivery pipe (9) is connected to the heat storage box (11) through the connecting pipe (10), and the interior of the heat storage box (11) is installed with a water tank (12).

2. A grate cooler capable of reducing coal consumption according to claim 1, characterized in that: The upper right side of the water tank (12) is connected to a docking inlet (13), the lower left side of the water tank (12) is connected to a drain outlet (16), and the middle waistline of the heat storage box (11) is provided with a connection port (14).

3. The grate cooler capable of reducing coal consumption according to claim 1, characterized in that: The surface of the water tank (12) is internally provided with pore galleries (15), and two groups of pore galleries (15) are arranged in parallel on the surface of the water tank (12).

4. The grate cooler capable of reducing coal consumption according to claim 1, characterized in that: The conductive pipe 1 (801) is connected to the waste gas recovery pipe (7) through the pipe opening (802), and the conductive pipe 1 (801) is connected to the conductive pipe 2 (804) through the connecting pipe (803).

5. The grate cooler capable of reducing coal consumption according to claim 1, characterized in that: The second conducting pipe (804) is connected to the delivery pipe (9) via the outlet pipe (805), and the delivery pipe (9) is connected to the docking inlet (13) on the heat storage box (11) via the connecting pipe (10).

6. The grate cooler capable of reducing coal consumption according to claim 1, characterized in that: A tertiary air return port (6) is provided on one side of the waste gas recovery pipe (7), and the tertiary air return port (6) is connected to a connection port (14) on the heat storage box (11).

7. The grate cooler capable of reducing coal consumption according to claim 1, characterized in that: A clinker inlet (4) is provided on the left side of the grate cooler (1), and a fuel inlet (5) is installed inside the clinker inlet (4). A cooling fan (3) is installed below the grate bed (2).

Images