A steam waste heat recovery device for industrial power generation

Abstract

The invention discloses a steam waste heat recovery device for industrial power generation, comprising a steam furnace, a combustion furnace, a first heat exchange box, a second heat exchange box and a filter box. The combustion furnace, the first heat exchange box, the second heat exchange box and the filter box are all installed on the top of a base, and the steam furnace is installed on the top of the combustion furnace. The system can recover the steam waste heat after power generation, so as to heat the water in a water tank, and automatically replenish the steam furnace with the hot water in the water tank, so that the water level in the steam furnace is always maintained at a constant level, which not only speeds up the water heating speed, but also prevents dry burning, and can fully utilize the steam waste heat. The steam heated in the water tank is heated by a heat exchange tube, and then the heat on the heat exchange tube is transported to the combustion furnace by a fan, so as to increase the heat of the combustion furnace, save coal consumption, and reduce costs. Finally, the steam is transported to the combustion furnace after filtering out water droplets through a filter, so as to improve the combustion efficiency.

Description

Technical Field

[0001] The invention relates to the field of steam waste heat recovery, and in particular to a steam waste heat recovery device for industrial power generation. Background Art

[0002] During industrial production, electricity is often generated by steam. The steam generated by existing steam power generation is directly cooled through a cooling tower and then discharged, resulting in waste of steam heat. The steam energy after power generation cannot be fully recovered and reused, resulting in increased power generation costs. In addition, the heat in the steam is directly discharged into the atmosphere, which will cause the temperature in the atmosphere to rise, causing a greenhouse effect, causing great damage to the environment, and making it inconvenient for people to use. Therefore, a steam waste heat recovery device for industrial power generation is provided. Summary of the invention

[0003] The purpose of the present invention is to provide a steam waste heat recovery device for industrial power generation in view of the defects of the prior art, so as to solve the problems raised by the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a steam waste heat recovery device for industrial power generation, comprising a steam furnace, a combustion furnace, a first heat exchange box, a second heat exchange box and a filter box, wherein the combustion furnace, the first heat exchange box, the second heat exchange box and the filter box are all installed on the top of a base, the steam furnace is installed on the top of the combustion furnace, a blower is connected to one side of the combustion furnace, an air intake pipe is connected to the blower, a one-way valve is installed on the air intake pipe, a steam delivery pipe is installed on the top of the steam furnace, one end of the steam delivery pipe is connected to a steam generator, and an air outlet of the steam generator is connected to the steam generator. It is connected to the first heat exchange box through a first connecting pipe, a first serpentine heat exchange tube is installed inside the first heat exchange box, the first serpentine heat exchange tube is connected to the condensate storage box through a third connecting pipe, the condensate storage box is connected to the second heat exchange box through a fourth connecting pipe, a second serpentine heat exchange tube is installed inside the second heat exchange box, a centrifugal fan is installed on one side of the top of the second heat exchange box, a second connecting pipe is installed in the middle of the top of the second heat exchange box, one end of the second connecting pipe is connected to the filter box, a number of filters are installed inside the filter box, and an air inlet is provided at the bottom of one side of the second heat exchange box.

[0005] As a preferred technical solution of the present invention, a dustproof net is installed on the air inlet, a first serpentine tube connecting plate is installed at the top and bottom of the first heat exchange box, and a second serpentine tube connecting plate is installed at the top and bottom of the second heat exchange box.

[0006] As a preferred technical solution of the present invention, the top and bottom of the first serpentine heat exchange tube are welded to the first serpentine tube connecting plate, and the top and bottom of the second serpentine heat exchange tube are welded to the second serpentine tube connecting plate.

[0007] As a preferred technical solution of the present invention, the first connecting pipe and the third connecting pipe are both connected to the first serpentine pipe connecting plate by welding, and the fourth connecting pipe and the second connecting pipe are both connected to the second serpentine pipe connecting plate by welding.

[0008] As a preferred technical solution of the present invention, the condensate storage box is fixedly connected to the third connecting pipe and the fourth connecting pipe respectively through connecting flanges, and the air outlet of the centrifugal fan is connected to the air inlet pipe through a pipeline.

[0009] As a preferred technical solution of the present invention, the top of one side of the first heat exchange box is connected to the steam boiler through a connecting pipe, a solenoid valve is installed on the connecting pipe, a liquid level sensor is installed inside the steam boiler, and the liquid level sensor is electrically connected to the solenoid valve through a controller.

[0010] As a preferred technical solution of the present invention, a water inlet pipe and a water outlet pipe are installed on the first heat exchange box, the blower is connected to the combustion furnace through an air supply pipe, and the filter box is connected to the blower through an air intake pipe.

[0011] As a preferred technical solution of the present invention, the filter screen is installed inside the filter box by bolts, and steam filter cotton is installed on the filter screen.

[0012] The beneficial effects of the present invention are as follows: the system can recover the waste heat of steam after power generation, so as to heat the water in the water tank, and use the hot water in the water tank to automatically replenish the steam boiler, so that the water level in the steam boiler is always maintained at a constant level, which not only speeds up the water heating speed, but also prevents dry burning, and can make full use of the waste heat of steam. The steam heated in the water tank is heated by the heat exchange tube, and then the heat on the heat exchange tube is transported to the combustion furnace by the fan, thereby increasing the heat of the combustion furnace, saving coal consumption, and reducing costs. Finally, the steam is filtered out of water droplets through the filter net and then transported to the combustion furnace, thereby improving combustion efficiency, saving energy consumption and resources, and making it convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention.

[0014] In the figure: a steam furnace 1, a combustion furnace 2, a first heat exchange box 3, a second heat exchange box 4, a filter box 5, a steam generator 6, a base 7, a blower 8, an air intake pipe 9, a steam delivery pipe 10, a first connecting pipe 11, a centrifugal fan 12, a one-way valve 13, a second connecting pipe 14, an air inlet 15, a second serpentine heat exchange tube 16, a condensate storage box 17, a third connecting pipe 18, a fourth connecting pipe 19, a first serpentine heat exchange tube 20, a first serpentine tube connecting plate 21, a second serpentine tube connecting plate 22, a filter screen 23, a solenoid valve 24, and a connecting pipe 25. DETAILED DESCRIPTION

[0015] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0016] See also Figure 1 The present invention provides a technical solution: a steam waste heat recovery device for industrial power generation, comprising a steam furnace 1, a combustion furnace 2, a first heat exchange box 3, a second heat exchange box 4 and a filter box 5, the combustion furnace 2, the first heat exchange box 3, the second heat exchange box 4 and the filter box 5 are all installed on the top of a base 7, the steam furnace 1 is installed on the top of the combustion furnace 2, a blower 8 is connected to one side of the combustion furnace 2, an air intake pipe 9 is connected to the blower 8, a check valve 13 is installed on the air intake pipe 9, a steam delivery pipe 10 is installed on the top of the steam furnace 1, one end of the steam delivery pipe 10 is connected to a steam generator 6, and an air outlet of the steam generator 6 is connected to the steam generator 6 through a first connecting pipe 11 is connected to the first heat exchange box 3, a first serpentine heat exchange tube 20 is installed inside the first heat exchange box 3, the first serpentine heat exchange tube 20 is connected to the condensate storage box 17 through the third connecting tube 18, the condensate storage box 17 is connected to the second heat exchange box 4 through the fourth connecting tube 19, a second serpentine heat exchange tube 16 is installed inside the second heat exchange box 4, a centrifugal fan 12 is installed on one side of the top of the second heat exchange box 4, a second connecting tube 14 is installed in the middle of the top of the second heat exchange box 4, one end of the second connecting tube 14 is connected to the filter box 5, a plurality of filter screens 23 are installed inside the filter box 5, and an air inlet 15 is provided at the bottom of one side of the second heat exchange box 4.

[0017] A dustproof net is installed on the air inlet 15 , a first serpentine tube connecting plate 21 is installed at the top and bottom of the first heat exchange box 3 , and a second serpentine tube connecting plate 22 is installed at the top and bottom of the second heat exchange box 4 .

[0018] The top and bottom of the first serpentine heat exchange tube 20 are both connected to the first serpentine tube connecting plate 21 by welding, and the top and bottom of the second serpentine heat exchange tube 16 are both connected to the second serpentine tube connecting plate 22 by welding.

[0019] The first connecting pipe 11 and the third connecting pipe 18 are both connected to the first serpentine pipe connecting plate 21 by welding, and the fourth connecting pipe 19 and the second connecting pipe 14 are both connected to the second serpentine pipe connecting plate 22 by welding.

[0020] The condensate storage box 17 is fixedly connected to the third connecting pipe 18 and the fourth connecting pipe 19 through connecting flanges, and the air outlet of the centrifugal fan 12 is connected to the air inlet pipe 9 through a pipeline.

[0021] The top of one side of the first heat exchange box 3 is connected to the steam furnace 1 through a connecting pipe 25, and a solenoid valve 24 is installed on the connecting pipe 25. A liquid level sensor is installed inside the steam furnace 1, and the liquid level sensor is electrically connected to the solenoid valve 24 through a controller.

[0022] A water inlet pipe and a water outlet pipe are installed on the first heat exchange box 3 . The blower 8 is connected to the combustion furnace 2 through an air delivery pipeline. The filter box 5 is connected to the blower 8 through an air intake pipe 9 .

[0023] The filter screen 23 is installed inside the filter box 5 by bolts, and a steam filter cotton is installed on the filter screen 23.

[0024] Working principle: A steam waste heat recovery device for industrial power generation, including a steam boiler 1, a combustion furnace 2, a first heat exchange box 3, a second heat exchange box 4, a filter box 5 and a steam generator 6. When in use, the water in the steam boiler 1 is heated by the combustion furnace 2 to generate steam from the water. The steam is transported to the steam generator 6 through the steam delivery pipe 10, and power is generated by the steam generator 6. The steam coming out of the steam generator 6 is transported to the first serpentine tube connecting plate 21 in the first heat exchange box 3 through the first connecting pipe 11, and the steam is transported to the first serpentine heat exchange tube 20 through the first serpentine tube connecting plate 21. The water in the first heat exchange box 3 is heated by the first serpentine heat exchange tube 20. When the water level in the steam boiler 1 drops, the water level is sensed by the water level sensor, and the solenoid valve 24 is controlled to open by the controller, so that the hot water in the first heat exchange box 3 is transported to the steam boiler 1 through the connecting pipe 25, so as to replenish the water source for the steam boiler 1, and the replenishment is hot water, thereby reducing the heating time of the combustion furnace 2. The steam discharged from the first serpentine heat exchange tube 20 is then transported to the condensate storage box 17 through the third connecting pipe 18. Because the steam after passing through the first serpentine heat exchange tube 20 contains some coolant, the coolant is stored in the condensate storage box 17, and the remaining steam will enter the second serpentine heat exchange tube 16 through the fourth connecting pipe 19. The power is turned on by the centrifugal fan 12, so that the outside wind enters the second heat exchange box 4 through the air inlet 15 and fully contacts with the second serpentine heat exchange tube 16, thereby heating the air. The heated air is transported to the air intake pipe 9 through the centrifugal fan 12, and then the blower 8 is used to transport the hot air in the air intake pipe 9 to the combustion furnace 2, thereby improving the combustion efficiency of the combustion furnace 2 and saving coal combustion. The steam after heat exchange through the second serpentine heat exchange tube 16 is then transported to the filter box 5 through the second connecting pipe 14, and the steam is filtered by the filter net in the filter box 5. The filtered gas contains some heat and is also transported to the air intake pipe 9, thereby providing heat to the combustion furnace 2.

[0025] The system can recycle the waste heat of steam after power generation to heat the water in the water tank, and use the hot water in the water tank to automatically replenish the steam boiler, so that the water level in the steam boiler is always maintained at a constant level. It can not only speed up the water heating speed, but also prevent dry burning, and make full use of the waste heat of steam. The steam heated in the water tank is heated by the heat exchange tube, and then the fan is used to transport the heat on the heat exchange tube to the combustion furnace, thereby increasing the heat of the combustion furnace, saving coal and reducing costs. Finally, the steam is filtered out of water droplets through the filter before being transported to the combustion furnace, thereby improving combustion efficiency, saving energy and resources, and making it convenient for people to use.

[0026] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A steam waste heat recovery device for industrial power generation, comprising a steam furnace (1), a combustion furnace (2), a first heat exchange box (3), a second heat exchange box (4) and a filter box (5), characterized in that: The combustion furnace (2), the first heat exchange box (3), the second heat exchange box (4) and the filter box (5) are all installed on the top of the base (7); the steam furnace (1) is installed on the top of the combustion furnace (2); a blower (8) is connected to one side of the combustion furnace (2); an air intake pipe (9) is connected to the blower (8); a one-way valve (13) is installed on the air intake pipe (9); a steam delivery pipe (10) is installed on the top of the steam furnace (1); one end of the steam delivery pipe (10) is connected to the steam generator (6); the air outlet of the steam generator (6) is connected to the first heat exchange box (3) through a first connecting pipe (11); a first serpentine valve (13) is installed inside the first heat exchange box (3); shaped heat exchange tube (20), the first serpentine heat exchange tube (20) is connected to a condensate storage box (17) via a third connecting tube (18), the condensate storage box (17) is connected to a second heat exchange box (4) via a fourth connecting tube (19), a second serpentine heat exchange tube (16) is installed inside the second heat exchange box (4), a centrifugal fan (12) is installed on one side of the top of the second heat exchange box (4), a second connecting tube (14) is installed in the middle of the top of the second heat exchange box (4), one end of the second connecting tube (14) is connected to a filter box (5), a plurality of filter screens (23) are installed inside the filter box (5), and an air inlet (15) is provided at the bottom of one side of the second heat exchange box (4).

2. The industrial power generation steam waste heat recovery device according to claim 1, characterized in that: A dust screen is installed on the air inlet (15), a first serpentine tube connecting plate (21) is installed at the top and bottom of the interior of the first heat exchange box (3), and a second serpentine tube connecting plate (22) is installed at the top and bottom of the interior of the second heat exchange box (4).

3. The industrial power generation steam waste heat recovery device according to claim 1, characterized in that: The top and bottom of the first serpentine heat exchange tube (20) are both connected by welding to the first serpentine tube connecting plate (21), and the top and bottom of the second serpentine heat exchange tube (16) are both connected by welding to the second serpentine tube connecting plate (22).

4. The industrial power generation steam waste heat recovery device according to claim 1, characterized in that: The first connecting pipe (11) and the third connecting pipe (18) are both connected to the first serpentine pipe connecting plate (21) by welding, and the fourth connecting pipe (19) and the second connecting pipe (14) are both connected to the second serpentine pipe connecting plate (22) by welding.

5. The industrial steam waste heat recovery device for power generation according to claim 1, characterized in that: The condensate storage box (17) is fixedly connected to the third connecting pipe (18) and the fourth connecting pipe (19) respectively through connecting flanges, and the air outlet of the centrifugal fan (12) is connected to the air inlet pipe (9) through a pipeline.

6. The industrial power generation steam waste heat recovery device according to claim 1, characterized in that: The top of one side of the first heat exchange box (3) is connected to the steam furnace (1) via a connecting pipe (25), an electromagnetic valve (24) is installed on the connecting pipe (25), and a liquid level sensor is installed inside the steam furnace (1), and the liquid level sensor is electrically connected to the electromagnetic valve (24) via a controller.

7. The industrial power generation steam waste heat recovery device according to claim 1, characterized in that: The first heat exchange box (3) is provided with a water inlet pipe and a water outlet pipe, the blower (8) is connected to the combustion furnace (2) via an air supply pipeline, and the filter box (5) is connected to the blower (8) via an air intake pipe (9).

8. The industrial power generation steam waste heat recovery device according to claim 1, characterized in that: The filter screen (23) is installed inside the filter box (5) by means of bolts, and steam filter cotton is installed on the filter screen (23).

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