CN210314341U

CN210314341U - Waste heat power generation device for blast furnace flue gas

Info

Publication number: CN210314341U
Application number: CN201921145920.7U
Authority: CN
Inventors: 季增鹏
Original assignee: Shandong Dier Energy Saving Technology Co Ltd
Current assignee: Shandong Dier Energy Saving Technology Co Ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-04-14
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses a waste heat power generation device of blast furnace flue gas relates to waste heat power generation technical field, including blast furnace hot-blast stove and the fixed steam turbine generator that sets up blast furnace hot-blast stove one side, the fixed heat transfer box that is provided with in one side of steam turbine generator, the fixed flue gas discharge port that is provided with in side of blast furnace hot-blast stove, the fixed flue gas pipe that is provided with of one end of flue gas discharge port, the fixed flue gas import that is provided with of one end of heat transfer box, the fixed exhanst gas outlet that is provided with of the other end of heat transfer box. The utility model discloses set up heat transfer box, flue gas pipe, steam pipe, exhanst gas outlet, heat exchange tube, the seal dish of ventilating and flue gas import, the heat exchange tube is a spiral corrugate heat exchange tube component, has prolonged the high temperature flue gas of heat exchange tube and has carried out the time of heat transfer with water liquid, improves the efficiency that high temperature flue gas and water liquid carry out the heat transfer effectively, has improved the utilization ratio of waste heat power generation facility to high temperature flue gas waste heat.

Description

Waste heat power generation device for blast furnace flue gas

Technical Field

The utility model relates to a waste heat power generation technical field specifically is a waste heat power generation device of blast furnace flue gas.

Background

The technology of converting redundant heat energy into electric energy in the production process is utilized. The waste heat power generation not only saves energy, but also is beneficial to environmental protection. An important device for cogeneration is a waste heat boiler. It uses the heat or combustible substances in working media such as waste gas and waste liquid as heat source to produce steam for power generation. Because the working medium temperature is not high, the boiler has large volume and large metal consumption. The waste heat for power generation is mainly: high-temperature flue gas waste heat, chemical reaction waste heat, waste gas and waste liquid waste heat, low-temperature waste heat (lower than 200 ℃) and the like. In addition, the power generation is carried out by using the surplus pressure difference; for example, the blast furnace gas has a high pressure at the top of the furnace, and can be sent to a gas user for use after being subjected to power generation by the expansion turbine generator.

However, the traditional waste heat power generation device has low working efficiency of heat exchange of high-temperature flue gas, so that the utilization rate of waste heat power generation device to the waste heat of the high-temperature flue gas is reduced, and the traditional waste heat power generation device does not treat the flue gas after heat exchange and directly discharges the flue gas to the outside, so that the influence of the external air environment is caused, and therefore, technical personnel in the field provide the waste heat power generation device for the flue gas of the blast furnace.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a waste heat power generation device of blast furnace flue gas to it is lower to solve traditional waste heat power generation device in the above-mentioned background art because high temperature flue gas heat transfer work efficiency, leads to waste heat power generation device to the reduction of the utilization ratio of high temperature flue gas waste heat, and traditional waste heat power generation device does not handle the flue gas after the heat transfer and directly arranges to the external world, leads to the problem that external air environment caused the influence.

In order to achieve the above object, the utility model provides a following technical scheme:

a waste heat power generation device for blast furnace flue gas comprises a blast furnace hot blast stove and a steam turbine generator fixedly arranged on one side of the blast furnace hot blast stove, wherein a heat exchange box body is fixedly arranged on one side of the steam turbine generator, a flue gas exhaust port is fixedly arranged on the side surface of the blast furnace hot blast stove, a flue gas guide pipe is fixedly arranged at one end of the flue gas exhaust port, a flue gas inlet is fixedly arranged at one end of the heat exchange box body, a flue gas outlet is fixedly arranged at the other end of the heat exchange box body, a flue gas exhaust pipe is fixedly arranged at one end of the flue gas outlet, a filtering box body is fixedly arranged at one end of the flue gas exhaust pipe, a steam outlet is fixedly arranged at the upper end of the heat exchange box body, an air extracting pump is fixedly arranged at one end of the steam outlet, a steam guide pipe is fixedly arranged at, the filter box is characterized in that a smoke dust filter plate is fixedly arranged in the filter box, and an adsorption filter layer is fixedly arranged in the filter box at a position right below the smoke dust filter plate.

As a further aspect of the present invention: one end of the steam guide pipe is communicated with an air inlet port of the steam wheel generator, and a water inlet port is fixedly arranged at one side position, far away from the steam outlet, of the upper end of the heat exchange box body.

As a further aspect of the present invention: and one ends of the flue gas outlet and the flue gas inlet are fixedly provided with ventilation discs, the ventilation discs are communicated with the heat exchange tube, and the flue gas guide pipe is communicated with the flue gas inlet.

As a further aspect of the present invention: the surface position of the smoke dust filter plate is provided with smoke dust filter holes, and the heat exchange tube is a spiral corrugated heat exchange tube component.

As a further aspect of the present invention: the bottom position department of filtering the box is fixed and is provided with the exhaust port, the adsorption filter layer is an active carbon adsorption filter layer component.

As a further aspect of the present invention: the side position department activity of filtering the box is articulated to have a sealing door, the side position department of sealing door is fixed and is provided with dark handle.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses set up heat transfer box, flue gas pipe, steam pipe, exhanst gas outlet, heat exchange tube, the seal dish of ventilating and flue gas import, the heat exchange tube is a spiral corrugate heat exchange tube component, has prolonged the high temperature flue gas of heat exchange tube and has carried out the time of heat transfer with water liquid, improves the efficiency that high temperature flue gas and water liquid carry out the heat transfer effectively, has improved the utilization ratio of waste heat power generation facility to high temperature flue gas waste heat.

2. The utility model discloses set up smoke and dust filter plate, exhaust port, absorption filtering layer and smoke and dust filtration pore, smoke and dust filter plate and absorption filtering layer can filter the absorption processing to the smoke and dust impurity in the flue gas and toxic gas respectively, prevent to directly discharge the flue gas to cause the influence to the external air environment.

3. The utility model discloses set up and filtered box, sealing door and hidden handle, when needs clean maintenance smoke and dust filter plate and absorption filtering layer, open the sealing door carry on the smoke and dust filter plate with adsorb the filtering layer clean maintenance can, the later stage of being convenient for carries out clean maintenance processing to smoke and dust filter plate and absorption filtering layer.

Drawings

FIG. 1 is a schematic structural diagram of a blast furnace flue gas waste heat power generation device;

FIG. 2 is a schematic diagram of the internal structure of a blast furnace flue gas waste heat power generation device;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

In the figure: 1. a blast furnace hot blast stove; 2. a steam wheel generator; 3. a heat exchange box body; 4. a filter box body; 5. a flue gas duct; 6. a flue gas discharge port; 7. an air pump; 8. a steam conduit; 9. a steam outlet; 10. a water inlet port; 11. a flue gas calandria; 12. a sealing door; 13. a hidden handle; 14. a flue gas outlet; 15. a heat exchange pipe; 16. a ventilation sealing disc; 17. a smoke dust filter plate; 18. an exhaust port; 19. an adsorption filter layer; 20. smoke dust filtering holes; 21. and a flue gas inlet.

Detailed Description

Referring to fig. 1 to 3, in an embodiment of the present invention, a waste heat power generation device for blast furnace flue gas includes a blast furnace hot blast stove 1 and a steam wheel generator 2 fixedly disposed on one side of the blast furnace hot blast stove 1, a heat exchange box 3 is fixedly disposed on one side of the steam wheel generator 2, a flue gas exhaust port 6 is fixedly disposed on a side surface of the blast furnace hot blast stove 1, a flue gas duct 5 is fixedly disposed at one end of the flue gas exhaust port 6, a flue gas inlet 21 is fixedly disposed at one end of the heat exchange box 3, a flue gas outlet 14 is fixedly disposed at the other end of the heat exchange box 3, a flue gas exhaust pipe 11 is fixedly disposed at one end of the flue gas exhaust pipe 14, a filter box 4 is fixedly disposed at one end of the flue gas exhaust pipe 11, a steam outlet 9 is fixedly disposed at an upper end of the heat exchange box 3, an air pump 7 is fixedly, the heat exchange tubes 15 are fixedly arranged at intervals in the heat exchange box body 3, the smoke filter plate 17 is fixedly arranged in the filter box body 4, and the adsorption filter layer 19 is fixedly arranged in the filter box body 4 at a position right below the smoke filter plate 17.

In fig. 2: one end of the steam guide pipe 8 is communicated with an air inlet port of the steam wheel generator 2, and a water inlet port 10 is fixedly arranged at one side position of the upper end of the heat exchange box body 3 far away from the steam outlet 9, so that the purpose of adding water to the heat exchange box body 3 is achieved.

In fig. 2: and one ends of the flue gas outlet 14 and the flue gas inlet 21 are fixedly provided with ventilating sealing discs 16, the ventilating sealing discs 16 are communicated with the heat exchange tube 15, and the flue gas guide pipe 5 is communicated with the flue gas inlet 21, so that the aim of introducing the flue gas exhausted by the blast furnace hot blast stove 1 into the heat exchange tube 15 is fulfilled.

In fig. 3: the surface position of the smoke filter plate 17 is provided with smoke filtering holes 20, and the heat exchange tube 15 is a spiral corrugated heat exchange tube component, so that the purpose of improving the heat exchange efficiency is achieved.

In fig. 3: the fixed exhaust port 18 that is provided with in bottom position department of filtering box 4, absorption filtering layer 19 is an active carbon absorption filtering layer component, has reached the purpose that can adsorb the filtration processing to the harmful gas in the flue gas.

In fig. 1: the side position of the filtering box body 4 is movably hinged with a sealing door 12, and the side position of the sealing door 12 is fixedly provided with a hidden handle 13, so that the aim of opening and closing the sealing door 12 is fulfilled.

The utility model discloses a theory of operation is: when the waste heat power generation device is used, a water inlet port 10 is arranged at the upper end of a heat exchange box body 3, water liquid is added into the heat exchange box body 3 through the water inlet port 10, high-temperature flue gas of a blast furnace hot blast stove 1 is introduced into a heat exchange tube 15 through a flue gas inlet 21, the high-temperature flue gas passing through the heat exchange tube 15 can exchange heat with the water liquid in the heat exchange box body 3, the heat exchange tube 15 is a spiral corrugated heat exchange tube component, the heat exchange time of the high-temperature flue gas of the heat exchange tube 15 and the water liquid is prolonged, the water liquid in the heat exchange box body 3 is heated by the high-temperature flue gas to generate steam, a suction pump 7 can pump the steam generated in the heat exchange box body 3 into a steam wheel generator 2 for the steam wheel generator 2 to generate electricity, the high-temperature flue gas after heat exchange enters a filter box body 4 through a flue gas outlet 14, a smoke dust filter plate 17, the treated flue gas is finally discharged to the outside through the exhaust port 18, and when the smoke filter plate 17 and the adsorption filter layer 19 need to be cleaned and maintained, the sealing door 12 is opened to clean and maintain the smoke filter plate 17 and the adsorption filter layer 19.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a waste heat power generation device of blast furnace flue gas, includes blast furnace hot-blast stove (1) and fixed steam turbine generator (2) that sets up blast furnace hot-blast stove (1) one side, its characterized in that, one side of steam turbine generator (2) is fixed and is provided with heat transfer box (3), the fixed flue gas discharge port (6) that is provided with in side of blast furnace hot-blast stove (1), the fixed flue gas pipe (5) that is provided with in one end of flue gas discharge port (6), the fixed flue gas import (21) that is provided with in one end of heat transfer box (3), the fixed exhanst gas outlet (14) that is provided with in the other end of heat transfer box (3), the fixed flue gas calandria (11) that is provided with in one end of exhanst gas calandria (11), the fixed filtration box (4) that is provided with in one end of flue gas calandria (11), the, the steam outlet (9) is provided with a fixed air pump (7) at one end, the end of giving vent to anger of air pump (7) is fixed and is provided with steam pipe (8), the fixed heat exchange tube (15) that are provided with in inside position department interval of heat exchange box (3), the fixed smoke and dust filter plate (17) that is provided with in inside of filtering box (4), the inside of filtering box (4) is located smoke and dust filter plate (17) and is located the fixed absorption filtering layer (19) that is provided with of position department under.

2. The blast furnace flue gas waste heat power generation device according to claim 1, wherein one end of the steam conduit (8) is communicated with an air inlet port of the steam turbine generator (2), and a water inlet port (10) is fixedly arranged at one side position of the upper end of the heat exchange box body (3) far away from the steam outlet (9).

3. The blast furnace flue gas waste heat power generation device according to claim 1, wherein one end of each of the flue gas outlet (14) and the flue gas inlet (21) is fixedly provided with a ventilation sealing disc (16), the ventilation sealing disc (16) is communicated with the heat exchange tube (15), and the flue gas guide tube (5) is communicated with the flue gas inlet (21).

4. The blast furnace flue gas waste heat power generation device according to claim 1, wherein a smoke filtering hole (20) is formed in the surface position of the smoke filtering plate (17), and the heat exchange pipe (15) is a spiral corrugated heat exchange pipe member.

5. The blast furnace flue gas waste heat power generation device according to claim 1, wherein an exhaust port (18) is fixedly arranged at the bottom end position of the filtering box body (4), and the adsorption filter layer (19) is an activated carbon adsorption filter layer component.

6. The blast furnace flue gas waste heat power generation device according to claim 1, wherein a sealing door (12) is movably hinged at a side position of the filtering box body (4), and a dark handle (13) is fixedly arranged at a side position of the sealing door (12).