Inlet smoke temperature recovery equipment for boiler denitration device

Abstract

The utility model relates to the technical field of boiler denitration devices, and discloses an inlet smoke temperature recovery device for a boiler denitration device, which comprises a waste heat recoverer, the top of the waste heat recoverer is fixedly connected with a fixed frame, the top of the fixed frame is fixedly connected with a mounting seat, the upper end of the mounting seat is fixedly connected with a water pump, and the water pump is fixedly connected with a water outlet of the waste heat recoverer. The right end of the water pump communicates with a water outlet pipe, and the left end of the water pump communicates with a water pumping pipe. One end of the water pumping pipe extends into the water tank, the water pump is started, water in the water tank is pumped by the water pump and sprayed into the water storage frame through the water outlet pipe, uniform distribution of the water is guaranteed through the distribution holes, and the temperature of flue gas is gradually reduced along with absorption of heat by the water; therefore, the temperature of the flue gas entering the denitration device is reduced, the flue gas with lower temperature enters the denitration device, so that the damage of high temperature to equipment can be reduced, the workload of the denitration device can be reduced, and the emission of harmful substances is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler denitration devices, in particular to an inlet flue gas temperature recovery device for a boiler denitration device. Background Art

[0002] Boiler denitration devices are mainly used to remove nitrogen oxides (NOx) from boiler flue gas to reduce the emission of air pollutants. These devices are usually applied to occasions such as thermal power plants and industrial boilers that generate a large amount of flue gas. Usually, a waste heat exchanger is installed at the inlet of the boiler denitration device to cool the flue gas, and then denitration is carried out through the denitration device.

[0003] However, the existing waste heat exchanger conducts heat through a metal heat exchange surface. The high-temperature heat in the flue gas is transferred to the medium through the heat exchange surface, causing the temperature of the medium to rise. During the heat conduction process, the temperature of the flue gas gradually decreases. However, the cooling efficiency is slow in this way. If the inlet flue gas temperature is too high, it will not only reduce the denitration efficiency, but also may increase the ammonia concentration in the atmosphere, causing other environmental problems. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides an inlet flue gas temperature recovery device for a boiler denitration device.

[0005] The utility model is realized by the following technical solutions: An inlet flue gas temperature recovery device for a boiler denitration device includes a waste heat recovery device. A fixed frame is fixedly connected to the top of the waste heat recovery device. An installation seat is fixedly connected to the top of the fixed frame. A water pump is fixedly connected to the upper end of the installation seat. A water outlet pipe is communicated with the right end of the water pump. A water suction pipe is communicated with the left end of the water pump. A water storage frame is fixedly connected to the inner wall of the fixed frame. A number of distribution holes are opened in the inner wall of the water storage frame. A drain pipe is communicated with the bottom of the waste heat recovery device.

[0006] Through the above technical solutions, one end of the water suction pipe is extended into the interior of the water pool to provide water source for subsequent use. The water pump pumps the water in the water pool and sprays it into the interior of the water storage frame through the water outlet pipe. The water is ensured to be evenly distributed through a number of distribution holes. As the heat is absorbed by the water, the temperature of the flue gas gradually decreases, thereby reducing the temperature of the flue gas entering the denitration device. The flue gas at a lower temperature entering the denitration device can reduce the damage to the equipment caused by high temperature, and at the same time can improve the denitration efficiency. Connecting the drain pipe to the heating pipeline enables the hot water generated after spraying to be used for heating, reducing the waste of resources and improving the practicability.

[0007] As a further improvement of the above solution, a fixed base is fixedly connected to the bottom of the waste heat recovery device. The end of the water outlet pipe away from the water pump penetrates through the fixed frame and extends into the interior of the fixed frame.

[0008] Through the above technical solution, the stability of the waste heat recovery device during use is improved by means of a fixed base.

[0009] As a further improvement of the above solution, the water storage frame is located at the lower end of the water outlet pipe, and a connecting pipe is connected to the left end of the waste heat recovery device.

[0010] As a further improvement of the above solution, a drying box is provided at the left end of the waste heat recovery device, and the right end of the drying box is communicated with the connecting pipe.

[0011] Through the above technical solution, the flue gas enters the interior of the drying box through the connecting pipe, causing the temperature of the drying box to rise, so that the items inside the drying box can be dried, improving the versatility during use.

[0012] As a further improvement of the above solution, a heat storage cavity is provided inside the drying box, and a sealing door is hinged to the left end of the drying box.

[0013] Through the above technical solution, heat is stored in the heat storage cavity, and the interior of the drying box is kept sealed through the sealing door to reduce heat loss.

[0014] As a further improvement of the above solution, a placement plate is fixedly connected to the inner wall of the drying box, and the number of the placement plates is three, and the three placement plates are equidistantly distributed.

[0015] Through the above technical solution, multiple items can be placed on the three placement plates, improving the convenience during use.

[0016] As a further improvement of the above solution, an exhaust pipe is fixedly connected to the top of the drying box, and the exhaust pipe is communicated with the heat storage cavity.

[0017] Through the above technical solution, the exhaust pipe is connected to other filtering devices, so that the subsequent discharged flue gas can be filtered to avoid affecting the environment.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] The present utility model is provided with a water pump, a water outlet pipe, a water suction pipe and a water storage frame. Specifically, one end of the water suction pipe extends into the interior of the water pool. By starting the water pump, the water pump pumps the water in the water pool and sprays it into the interior of the water storage frame through the water outlet pipe. The water is ensured to be evenly distributed through a plurality of distribution holes. As the heat is absorbed by the water, the temperature of the flue gas gradually decreases, thereby reducing the temperature of the flue gas entering the denitration device. The flue gas at a lower temperature entering the denitration device can reduce the damage of high temperature to the equipment, help reduce the working load of the denitration device, and thus reduce the emission of harmful substances.

[0020] The utility model improves the practicability and versatility in use by setting a connecting pipe, a drying box and a drain pipe. Specifically, the flue gas enters the interior of the drying box through the connecting pipe to heat the interior of the drying box, so as to dry the articles inside the drying box. The sprayed water contacts and is heated by the flue gas, and the hot water is discharged through the drain pipe. The discharged hot water can be used for heating or other purposes, realizing the multi-functional utilization of heat energy. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall sectional structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the overall side view structure of the utility model;

[0024] Figure 4 It is a schematic diagram of the exploded structure of the water storage frame of the utility model;

[0025] Figure 5 It is a schematic diagram of the internal structure of the drying box of the utility model.

[0026] Main Symbol Description:

[0027] 1. Waste heat recovery device; 2. Fixed frame; 3. Mounting seat; 4. Water pump; 5. Outlet pipe; 6. Suction pipe; 7. Water storage frame; 8. Distribution holes; 9. Drain pipe; 10. Fixed base; 11. Connecting pipe; 12. Drying box; 13. Heat storage cavity; 14. Sealed door; 15. Placing plate; 16. Exhaust pipe. Specific Embodiments

[0028] Next, in combination with the drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0029] Embodiment:

[0030] Please combine Figures 1-5, An inlet flue gas temperature recovery device for a boiler denitration device in this embodiment includes a waste heat recovery device 1. A fixed frame 2 is fixedly connected to the top of the waste heat recovery device 1. An installation seat 3 is fixedly connected to the top of the fixed frame 2. A water pump 4 is fixedly connected to the upper end of the installation seat 3. A water outlet pipe 5 is communicated with the right end of the water pump 4. A water suction pipe 6 is communicated with the left end of the water pump 4. A water storage frame 7 is fixedly connected to the inner wall of the fixed frame 2. A number of distribution holes 8 are opened on the inner wall of the water storage frame 7. A drain pipe 9 is communicated with the bottom of the waste heat recovery device 1. One end of the water suction pipe 6 is extended into the interior of the water tank. By starting the water pump 4, the water pump 4 pumps the water in the water tank and sprays it into the interior of the water storage frame 7 through the water outlet pipe 5. The uniform distribution of water is ensured through a number of distribution holes 8. As the heat is absorbed by the water, the temperature of the flue gas gradually decreases, thereby reducing the temperature of the flue gas entering the denitration device. The flue gas at a lower temperature entering the denitration device can reduce the damage to the equipment caused by high temperature, help reduce the working load of the denitration device, and thus reduce the emission of harmful substances. The sprayed water contacts and heats the flue gas, and the hot water is discharged through the drain pipe 9. The discharged hot water can be used for heating or other purposes, realizing the multi-functional utilization of thermal energy.

[0031] A fixed base 10 is fixedly connected to the bottom of the waste heat recovery device 1. The end of the water outlet pipe 5 away from the water pump 4 penetrates through the fixed frame 2 and extends into the interior of the fixed frame 2.

[0032] The water storage frame 7 is located at the lower end of the water outlet pipe 5. A connecting pipe 11 is communicated with the left end of the waste heat recovery device 1.

[0033] A drying box 12 is arranged at the left end of the waste heat recovery device 1. The right end of the drying box 12 is communicated with the connecting pipe 11. Items to be dried are placed on the surface of the placing plate 15. The flue gas enters the interior of the drying box 12 through the connecting pipe 11 and heats the interior of the drying box 12, so that the items inside the drying box 12 can be dried, improving the practicality and multi-functionality during use.

[0034] A heat storage cavity 13 is arranged inside the drying box 12. A sealing door 14 is hinged to the left end of the drying box 12.

[0035] Placing plates 15 are fixedly connected to the inner wall of the drying box 12. The number of the placing plates 15 is set to three, and the three placing plates 15 are equidistantly distributed.

[0036] An exhaust pipe 16 is fixedly connected to the top of the drying box 12. The exhaust pipe 16 is communicated with the heat storage cavity 13.

[0037] In the embodiment of the present application, the implementation principle of an inlet flue gas temperature recovery device for a boiler denitration device is as follows: During use, it is connected to the pipeline of the boiler and the inlet of the denitration device through the waste heat recovery device 1 at both ends, so that the flue gas enters the interior of the waste heat recovery device 1. One end of the water extraction pipe 6 is extended into the interior of the water pool. By starting the water pump 4, the water pump 4 extracts the water in the water pool and sprays it into the interior of the water storage frame 7 through the water outlet pipe 5. The water is ensured to be evenly distributed through a number of distribution holes 8. As the heat is absorbed by the water, the temperature of the flue gas gradually decreases, thereby reducing the temperature of the flue gas entering the denitration device. The flue gas at a lower temperature entering the denitration device can reduce the damage to the equipment caused by high temperature, help reduce the working load of the denitration device, and thus reduce the emission of harmful substances. Place the items to be dried on the surface of the placement plate 15. The flue gas enters the interior of the drying box 12 through the connecting pipe 11 and heats the interior of the drying box 12, so that the items inside the drying box 12 can be dried, improving the practicality during use and also improving the versatility. The sprayed water contacts and heats the flue gas, and the hot water is discharged through the drain pipe 9. The discharged hot water can be used for heating or other purposes, realizing the multi-functional utilization of heat energy.

[0038] The above-mentioned implementation manners are only the preferred implementation manners of the present utility model, and cannot be used to limit the scope of protection of the present utility model. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model belong to the scope of protection required by the present utility model.

Claims

1. An inlet flue gas temperature recovery device for a boiler denitration device, characterized in that, It includes a waste heat recovery device (1), a fixed frame (2) is fixedly connected to the top of the waste heat recovery device (1), a mounting seat (3) is fixedly connected to the top of the fixed frame (2), a water pump (4) is fixedly connected to the upper end of the mounting seat (3), a water outlet pipe (5) is communicated with the right end of the water pump (4), a water suction pipe (6) is communicated with the left end of the water pump (4), a water storage frame (7) is fixedly connected to the inner wall of the fixed frame (2), a number of distribution holes (8) are formed in the inner wall of the water storage frame (7), and a drain pipe (9) is communicated with the bottom of the waste heat recovery device (1).

2. The inlet flue gas temperature recovery device for a boiler denitration device according to claim 1, characterized in that: A fixed base (10) is fixedly connected to the bottom of the waste heat recovery device (1), and the end of the water outlet pipe (5) far away from the water pump (4) penetrates through the fixed frame (2) and extends into the fixed frame (2).

3. The inlet flue gas temperature recovery device for a boiler denitration device according to claim 1, characterized in that: The water storage frame (7) is located at the lower end of the water outlet pipe (5), and a connecting pipe (11) is communicated with the left end of the waste heat recovery device (1).

4. The inlet flue gas temperature recovery device for a boiler denitration device according to claim 2, characterized in that: A drying box (12) is arranged at the left end of the waste heat recovery device (1), and the right end of the drying box (12) is communicated with the connecting pipe (11).

5. The inlet flue gas temperature recovery device for a boiler denitration device according to claim 4, characterized in that: A heat storage cavity (13) is arranged inside the drying box (12), and a sealing door (14) is hinged to the left end of the drying box (12).

6. The inlet flue gas temperature recovery device for a boiler denitration device according to claim 5, characterized in that: A placing plate (15) is fixedly connected to the inner wall of the drying box (12), the number of the placing plates (15) is three, and the three placing plates (15) are equidistantly distributed.

7. The inlet flue gas temperature recovery device for a boiler denitration device according to claim 6, characterized in that: An exhaust pipe (16) is fixedly connected to the top of the drying box (12), and the exhaust pipe (16) is communicated with the heat storage cavity (13).

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