Grate cooler heat energy recycling device

Abstract

The utility model belongs to the technical field of heat energy recovery, and discloses a grate cooler heat energy recycling device which comprises a heat exchange tank, saline water is stored in the heat exchange tank, the heat exchange tank is provided with an air inlet and an air outlet, the air inlet of the heat exchange tank is connected with an air supply pipeline, and the air supply pipeline is connected with the air outlet end of a grate cooler. The heat exchange tank is connected with a water circulation pipeline, the water circulation pipeline comprises a water inlet main pipeline, a water outlet main pipeline and heat exchange copper pipes, the heat exchange copper pipes are connected between the water inlet main pipeline and the water outlet main pipeline in parallel, a main valve is arranged on a path of the water inlet main pipeline, and a branch valve is arranged on a branch path where the heat exchange copper pipes are connected in parallel.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat recovery, and in particular relates to a heat recovery and utilization device for a grate cooler. Background Art

[0002] Grate cooler is an important main equipment in the clinker burning system of cement plant. Its main function is to cool and transport cement clinker. At the same time, it provides hot air for rotary kiln and decomposition furnace, and is the main equipment for heat recovery in the burning system.

[0003] Specifically, the grate cooler is a quench cooler. After the clinker enters the cooler from the kiln, it is spread on the grate plate to form a material layer of a certain thickness. The cold air blown in passes through the material layer moving on the grate bed in a perpendicular direction to quench the clinker, and the clinker can be quenched from 1300-1400℃ to below 100℃ within a few minutes.

[0004] The temperature of the gas discharged from the grate cooler increases after heat exchange with the clinker. If the gas is directly discharged, heat energy will be wasted. Therefore, a grate cooler heat energy recovery and utilization device is provided. Utility Model Content

[0005] In view of the problems raised by the above background technology, the purpose of the utility model is to provide a heat energy recovery and utilization device for a grate cooler.

[0006] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0007] A grate cooler heat energy recovery and utilization device comprises a heat exchange tank, wherein brine is stored inside the heat exchange tank, the heat exchange tank is provided with an air inlet and an air outlet, the air inlet of the heat exchange tank is connected to an air supply pipeline, and the air supply pipeline is connected to an air outlet of the grate cooler;

[0008] The heat exchange tank is connected to a water circulation pipeline, which includes an inlet main pipeline, an outlet main pipeline and a heat exchange copper tube. The heat exchange copper tube is connected in parallel between the inlet main pipeline and the outlet main pipeline. A main valve is provided on the path of the inlet main pipeline, and a branch valve is provided on the branch path of the heat exchange copper tube in parallel.

[0009] It is further defined that the exhaust port of the heat exchange tank is connected to a temperature sensor. With such a structural design, the temperature sensor detects the temperature of the gas after the heat exchange has been completed at the exhaust port.

[0010] It is further defined that the exhaust port of the heat exchange tank is provided with a first interface and a second interface, the first interface is emptied, the second interface is bypassed with the air supply pipeline, the first interface and the second interface are both connected to the solenoid valve for controlling the on and off, with such a structural design, if the temperature sensor detects that the temperature of the exhaust gas has dropped below the usable temperature, the gas is directly discharged through the first interface, if the temperature of the exhaust gas is still above the usable temperature, the gas flows back to the air supply pipeline through the second interface, thereby realizing secondary heat exchange and improving utilization rate.

[0011] It is further defined that the exhaust port of the heat exchange tank is connected to an air pressure sensor. With such a structural design, the air pressure sensor is used to detect the air pressure at the exhaust port and monitor whether the air pressure of the heat exchange tank is within a safe range.

[0012] It is further defined that the exhaust port of the heat exchange tank is connected to a safety valve. With such a structural design, when the air pressure exceeds the air pressure set by the safety valve, the safety valve releases the pressure to reduce the internal pressure to a safe range.

[0013] The beneficial effects of the utility model include: being able to realize the heat energy recovery and utilization of the gas at the outlet end of the grate cooler; specifically, the high-temperature gas discharged from the outlet end of the grate cooler enters the interior of the heat exchange tank through the air supply pipeline, and directly exchanges heat with the brine therein, thereby realizing the heating of the brine and the heat exchange copper tube; the heat exchange copper tube immersed in the brine transfers the heat of the brine to the internal water flow, thereby realizing the heating of the water flow and completing the heat utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0015] Figure 1 This is a structural schematic diagram of an embodiment of a grate cooler heat energy recovery and utilization device of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a water circulation pipeline in an embodiment of a grate cooler heat energy recovery and utilization device of the utility model;

[0017] The main component symbols are described as follows:

[0018] 1. heat exchange tank; 11. air inlet; 12. air outlet; 121. first interface; 122. second interface;

[0019] 3. Air pressure sensor;

[0020] 4. Temperature sensor;

[0021] 5. Safety valve;

[0022] 6. Water circulation pipeline; 61. Water inlet main pipeline; 62. Water outlet main pipeline; 63. Heat exchange copper pipe; 64. Branch valve; 65. Main valve;

[0023] 7. Air supply pipeline. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1-2 As shown, a heat energy recovery and utilization device of a grate cooler of the utility model comprises a heat exchange tank 1, wherein brine is stored inside the heat exchange tank 1, and the heat exchange tank 1 is provided with an air inlet 11 and an air outlet 12, wherein the air inlet 11 of the heat exchange tank 1 is connected to an air supply pipeline 7, and the air supply pipeline 7 is connected to an air outlet end of the grate cooler;

[0026] The heat exchange tank 1 is connected to the water circulation pipeline 6, which includes an inlet main pipeline 61, an outlet main pipeline 62 and a heat exchange copper tube 63. The heat exchange copper tube 63 is connected in parallel between the inlet main pipeline 61 and the outlet main pipeline 62. A main valve 65 is set on the path of the inlet main pipeline 61, and a branch valve 64 is set on the branch path of the heat exchange copper tube 63 in parallel.

[0027] In this embodiment:

[0028] The heat exchange tank 1 stores salt water, which has a higher boiling point, so the upper temperature limit is higher and more heat energy is stored;

[0029] The high-temperature gas discharged from the outlet of the grate cooler enters the interior of the heat exchange tank 1 through the air delivery pipeline 7, and directly exchanges heat with the brine therein to achieve the heating of the brine and the heat exchange copper tube 63. The existence of the brine is mainly to store more heat energy;

[0030] The heat exchange copper tube 63 immersed in the salt water transfers the heat of the salt water to the internal water flow, thereby heating the water flow and utilizing the heat. The water flows in from the water inlet main line 61, completes the heat exchange through the heat exchange copper tube 63, and is then discharged from the water outlet main line 62. The main valve 65 is used to control the on-off of the water inlet main line 61, and the branch valve 64 is used to control the on-off of the branch line.

[0031] Preferably, the exhaust port of the heat exchange tank 1 is connected to the temperature sensor 4. With this structural design, the temperature sensor 4 detects the temperature of the gas at the exhaust port after the heat exchange has been completed. In fact, other temperature monitoring structures can also be considered according to specific circumstances.

[0032] Preferably, the exhaust port 12 of the heat exchange tank 1 is provided with a first interface 121 and a second interface 122, the first interface 121 is emptied, the second interface 122 is connected to the air supply pipeline 7, and the first interface 121 and the second interface 122 are both connected to the electromagnetic valve for controlling the on-off. With such a structural design, if the temperature sensor 4 detects that the temperature of the exhaust gas has dropped below the usable temperature, the gas is directly exhausted through the first interface 121, and if the temperature of the exhaust gas is still above the usable temperature, the gas flows back to the air supply pipeline 7 through the second interface 122, realizing secondary heat exchange and improving the utilization rate. In fact, other structural shapes that improve the utilization rate can also be considered according to specific circumstances.

[0033] Preferably, the exhaust port of the heat exchange tank 1 is connected to the air pressure sensor 3. With this structural design, the air pressure sensor 3 is used to detect the air pressure at the exhaust port and monitor whether the air pressure of the heat exchange tank 1 is within a safe range. In fact, other air pressure monitoring structures can also be considered according to specific circumstances.

[0034] Preferably, the exhaust port of the heat exchange tank 1 is connected to the safety valve 5. With this structural design, when the air pressure exceeds the air pressure set by the safety valve 5, the safety valve 5 releases the pressure to reduce the internal pressure to a safe range. In fact, other pressure reduction structures can also be considered according to specific circumstances.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A grate cooler heat energy recovery and utilization device, characterized in that: The invention comprises a heat exchange tank (1), wherein salt water is stored in the heat exchange tank (1), and the heat exchange tank (1) is provided with an air inlet (11) and an air outlet (12), wherein the air inlet (11) of the heat exchange tank (1) is connected to an air supply pipeline (7), and the air supply pipeline (7) is connected to an air outlet of a grate cooler; The heat exchange tank (1) is connected to a water circulation pipeline (6), wherein the water circulation pipeline (6) comprises a water inlet main pipeline (61), a water outlet main pipeline (62) and a heat exchange copper tube (63), wherein the heat exchange copper tube (63) is connected in parallel between the water inlet main pipeline (61) and the water outlet main pipeline (62), a main valve (65) is provided on the path of the water inlet main pipeline (61), and a branch valve (64) is provided on the branch path of the heat exchange copper tube (63) in parallel.

2. The grate cooler heat energy recovery and utilization device according to claim 1, characterized in that: The exhaust port of the heat exchange tank (1) is connected to a temperature sensor (4).

3. The grate cooler heat energy recovery and utilization device according to claim 2, characterized in that: The exhaust port (12) of the heat exchange tank (1) is provided with a first interface (121) and a second interface (122); the first interface (121) is emptied, the second interface (122) is connected to the air supply pipeline (7), and the first interface (121) and the second interface (122) are both connected to a solenoid valve for controlling on and off.

4. The grate cooler heat energy recovery and utilization device according to claim 1, characterized in that: The exhaust port of the heat exchange tank (1) is connected to an air pressure sensor (3).

5. The heat energy recovery and utilization device of a grate cooler according to claim 4, characterized in that: The exhaust port of the heat exchange tank (1) is connected to a safety valve (5).

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