CN219415770U - Waste heat utilization device of car hearth furnace - Google Patents

Abstract

The utility model discloses a vehicle-bottom type furnace waste heat utilization device, which relates to the technical field of waste heat recovery, and in particular relates to a vehicle-bottom type furnace waste heat utilization device. Through the cooperation setting of bottom butterfly valve and top butterfly valve, make this bottom formula stove waste heat utilization device possess two kinds of waste heat utilization mode and switch over the effect of simple be convenient for operation each other, through the cooperation setting of roasting furnace, exhaust trunk line and waste heat utilization boiler, make this bottom formula stove waste heat utilization device possess waste heat conversion equipment and install and then need not spend material resources and financial resources to lay the effect of pipeline saving cost nearby.

Description

Waste heat utilization device of car hearth furnace

Technical Field

The utility model relates to the technical field of waste heat recovery, in particular to a waste heat utilization device of a car bottom type furnace.

Background

The car bottom type roasting furnace mainly comprises a hearth, a furnace car, a high-temperature fan, an exhaust gas channel and the like, wherein the hearth is a fixed building, the car bottom provided with a walking mechanism at the bottom is pulled out of or fed into the hearth along a track on the bottom surface of the hearth, a combustion nozzle is arranged on the side surface of the hearth for combustion, and the roasting furnace is heated by open flame combustion of the combustion nozzle, so that combustion air is required to be continuously blown in about combustion, and meanwhile, exhaust gas in the roasting furnace is required to be discharged in time, but a large amount of heat is also required to be discharged, so that the discharged heat is required to be recycled, the current utilization mode of waste heat is generally two, one mode is to directly preheat the combustion air for the combustor, the other mode is to convert the waste heat into other energy through external equipment, but the two waste heat utilization modes are relatively complex to switch each other, and waste heat conversion equipment is far away from the roasting furnace, so that a pipeline is required to be paved.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a waste heat utilization device of a vehicle hearth furnace, which solves the problems in the background art.

(II) technical scheme

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a bottom of a car formula stove waste heat utilization device, includes the roasting furnace, the bottom of roasting furnace is provided with the roasting bottom of a car, one side of roasting furnace is provided with the gate of activity from top to bottom, opposite side fixed mounting of roasting furnace has the exhaust trunk line, the below of exhaust trunk line is through welded mode fixed mounting there being boiler intake pipe, the both ends of boiler intake pipe are provided with the waste heat utilization boiler, the top between the waste heat utilization boiler is connected with boiler exhaust communicating pipe, through welded mode fixed mounting there being boiler exhaust manifold between boiler exhaust communicating pipe and the exhaust trunk line, the exhaust trunk line is provided with butterfly valve near boiler exhaust manifold's below, the exhaust trunk line is provided with the fume extractor near boiler exhaust manifold's top, the exhaust trunk line is close to one side of fume extractor and installs the waste heat and recycles the pipeline, the top butterfly valve is installed near the top of waste heat recycling pipeline to the exhaust trunk line.

Preferably, the height of the main exhaust pipe is higher than the upper surface of the bottom of the roasting vehicle, and the boiler air inlet pipe is connected below the waste heat utilization boiler.

Preferably, a water heating pipeline filled with water is arranged in the waste heat utilization boiler, a steam pipe is arranged above the waste heat utilization boiler, and a steam generator of the steam pipe is connected.

Preferably, the inner diameter of the boiler air inlet pipe is the same as the inner diameter of the boiler exhaust main pipe and is far smaller than the inner diameter of the exhaust main pipe, and the inner cavity of the waste heat utilization boiler is communicated with the inner cavity of the roasting furnace through a pipeline.

Preferably, the rotation speed of the fan blade of the smoke extractor can be adjusted, and the higher the rotation speed of the fan blade of the smoke extractor is, the higher the air in the roasting furnace is discharged.

Preferably, most of air in the roasting furnace is directly discharged through the main exhaust pipe when the butterfly valve is opened, and all air in the roasting furnace can be discharged after the waste heat utilization boiler is needed when the butterfly valve is closed.

(III) beneficial effects

The utility model provides a waste heat utilization device of a vehicle hearth furnace, which has the following beneficial effects:

1. this bottom formula stove waste heat utilization device, cooperation through bottom butterfly valve and top butterfly valve sets up, makes this bottom formula stove waste heat utilization device possess two kinds of waste heat utilization mode and switch each other simple effect of being convenient for operate, just can switch each other hot waste gas in two kinds of waste heat utilization modes through the open and the closed state of control bottom butterfly valve and top butterfly valve.

2. According to the vehicle-bottom type furnace waste heat utilization device, through the cooperation setting of the roasting furnace, the exhaust main pipeline and the waste heat utilization boiler, the vehicle-bottom type furnace waste heat utilization device has the effect that waste heat conversion equipment is installed nearby and then cost is saved by not spending material resources and financial resources laying pipelines, and the waste heat utilization boiler is directly installed beside the roasting furnace through the exhaust main pipeline.

Drawings

FIG. 1 is a schematic view of a perspective view of the present utility model;

FIG. 2 is a schematic diagram of the front view of the present utility model;

FIG. 3 is a schematic diagram of a top view of the present utility model;

fig. 4 is a schematic view of a partial cross-sectional view of the present utility model.

In the figure: 1. a roasting furnace; 101. roasting the bottom of the car; 102. a gate; 2. a main exhaust pipe; 3. a boiler air inlet pipe; 4. a waste heat utilization boiler; 401. a water heating pipe; 402. a steam pipe; 5. a boiler exhaust communication pipe; 6. a boiler exhaust manifold; 7. a bottom butterfly valve; 8. a smoke exhauster; 9. a waste heat recycling pipeline; 10. a top butterfly valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 to 4, the present utility model provides a technical solution: a waste heat utilization device of a hearth furnace comprises a roasting furnace 1, wherein the inner cavity of the roasting furnace 1 is heated by flame of a burner, the bottom of the roasting furnace 1 is provided with a roasting vehicle bottom 101, the roasting vehicle bottom 101 can enter and exit the roasting furnace 1 through rail translation, one side of the roasting furnace 1 is provided with a gate 102 which moves up and down, the end face of the roasting furnace 1 can be sealed after the gate 102 is put down, the other side of the roasting furnace 1 is fixedly provided with an exhaust main pipeline 2, the exhaust main pipeline 2 is used for exhausting waste gas generated when the burner in the roasting furnace 1 burns, the height of the exhaust main pipeline 2 is higher than the upper surface of the roasting vehicle bottom 101, a boiler air inlet pipe 3 is fixedly arranged below the exhaust main pipeline 2 in a welding mode, two ends of the boiler air inlet pipe 3 are provided with waste heat utilization boilers 4, the inner cavity of the waste heat utilization boilers 4 are communicated with the inner cavity of the roasting furnace 1 through pipelines, the boiler air inlet pipe 3 is connected below the waste heat utilization boiler 4, a water heating pipeline 401 filled with water is arranged in the waste heat utilization boiler 4, a steam pipe 402 is arranged above the waste heat utilization boiler 4, a steam generator of the steam pipe 402 is connected, the waste gas in the roasting furnace 1 is high in temperature so as to heat the water heating pipeline 401 in the waste heat utilization boiler 4, a large amount of steam generated after the water heating pipeline 401 is boiled is discharged from the steam pipe 402 and finally drives the steam generator to generate power, a boiler exhaust communicating pipe 5 is connected above the waste heat utilization boiler 4, a boiler exhaust main pipe 6 is fixedly arranged between the boiler exhaust communicating pipe 5 and the exhaust main pipe 2 in a welding mode, the inner diameter size of the boiler air inlet pipe 3 is the same as the inner diameter size of the boiler exhaust main pipe 6 and is far smaller than the inner diameter size of the exhaust main pipe 2, the exhaust main pipeline 2 is close to the below of boiler exhaust manifold 6 and is provided with bottom butterfly valve 7 for most of the air in the roasting furnace 1 is directly discharged through exhaust main pipeline 2 when bottom butterfly valve 7 is opened, and all the air in the roasting furnace 1 must just can be discharged after waste heat utilization boiler 4 when bottom butterfly valve 7 is closed, and the top that exhaust main pipeline 2 is close to boiler exhaust manifold 6 is provided with the induced-draught fan 8, and the rotational speed of induced-draught fan 8 flabellum can be adjusted, and the faster the rotational speed of induced-draught fan 8 flabellum is the air in the roasting furnace 1 is by the speed of being discharged, and waste heat reuse pipeline 9 is installed to the side that exhaust main pipeline 2 is close to induced-draught fan 8, and top butterfly valve 10 is installed to the top that exhaust main pipeline 2 is close to waste heat reuse pipeline 9, and waste heat reuse pipeline 9 is used for providing hot air for the inside combustor of roasting furnace 1.

When in use, the burner in the roasting furnace 1 generates a large amount of heat and generates a large amount of waste gas, the waste gas contains a large amount of waste heat which is discharged through the main exhaust pipeline 2, so that the waste heat is recycled for realizing energy conservation and emission reduction, at the moment, two recycling modes are adopted, particularly, which waste heat recycling mode is required to be selected according to specific conditions, when the roasting furnace 1 needs to be heated, the waste heat is used as the waste heat of the burner air in the roasting furnace 1, so that the temperature of the burner flame can be increased to accelerate the temperature rise of the roasting furnace 1, the bottom butterfly valve 7 is opened and the top butterfly valve 10 is closed in specific operation, at the moment, the roasting furnace 1 and the main exhaust pipeline 2 form an internal circulation, so that most of the heat in the waste gas participates in the preheating of the combustion air of the burner, when the roasting furnace 1 needs to be cooled, the bottom butterfly valve 7 is closed and the top butterfly valve 10 is opened, at the moment, waste gas must pass through the waste heat utilization boiler 4 to be discharged, waste heat of the waste gas is absorbed by the waste heat utilization boiler 4 in the process, then water in the waste heat utilization boiler 4 boils and steam is discharged from the steam pipe 402, finally the steam pushes the steam generator to work for generating electricity, further waste heat is recycled and converted into electric energy, when the roasting furnace 1 needs to be constant temperature, the rotating speed of the smoke extractor 8 and the opening and closing states of the bottom butterfly valve 7 and the top butterfly valve 10 are controlled according to the temperature requirement, the specific process is that when the temperature in the roasting furnace 1 is higher, the rotating speed of the smoke extractor 8 is increased, the bottom butterfly valve 7 and the top butterfly valve 10 are both closed, when the temperature in the roasting furnace 1 is lower, the rotating speed of the smoke extractor 8 is reduced, the bottom butterfly valve 7 is opened and the top butterfly valve 10 is closed, the two waste heat utilization modes can be switched mutually by the control mode, the operation is simple and convenient, and the waste heat utilization boiler 4 is directly arranged beside the roasting furnace 1, so that the cost is saved by not spending material resources and financial resources and laying pipelines.

In summary, this bottom formula stove waste heat utilization device passes through the cooperation setting of bottom butterfly valve 7 and top butterfly valve 10, make this bottom formula stove waste heat utilization device possess the effect that two kinds of waste heat utilization modes switch over simple be convenient for operate each other, through the cooperation setting of roasting stove 1, exhaust trunk line 2 and waste heat utilization boiler 4, make this bottom formula stove waste heat utilization device possess waste heat conversion equipment install nearby and then do not need spending material resources financial resources to lay the effect of pipeline saving cost, its design thinking is that the boiler support with waste heat energy conversion installs in roasting stove 1 waste gas exhaust pipeline next door, not only can practice thrift the pipeline but also can switch back and forth waste heat utilization's mode through two valves.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a car hearth furnace waste heat utilization equipment, includes roasting furnace (1), its characterized in that: the bottom of roasting furnace (1) is provided with roasting vehicle bottom (101), one side of roasting furnace (1) is provided with gate (102) of activity from top to bottom, opposite side fixed mounting of roasting furnace (1) has exhaust trunk pipe (2), the below of exhaust trunk pipe (2) is through welded mode fixed mounting there being boiler intake pipe (3), the both ends of boiler intake pipe (3) are provided with waste heat utilization boiler (4), the top between waste heat utilization boiler (4) is connected with boiler exhaust communicating pipe (5), there is boiler exhaust manifold (6) through welded mode fixed mounting between boiler exhaust communicating pipe (5) and the exhaust trunk pipe (2), the below that exhaust trunk pipe (2) is close to boiler exhaust manifold (6) is provided with bottom butterfly valve (7), the top that exhaust trunk pipe (2) is close to boiler exhaust manifold (6) is provided with exhaust fume extractor (8), waste heat recycling pipeline (9) are installed to one side that exhaust trunk pipe (2) is close to exhaust fume extractor (8), top valve (10) are installed to the top that exhaust trunk pipe (2) is close to waste heat recycling pipeline (9).

2. The vehicular hearth furnace waste heat utilization apparatus according to claim 1, wherein: the height of the main exhaust pipe (2) is higher than the upper surface of the roasting vehicle bottom (101), and the boiler air inlet pipe (3) is connected below the waste heat utilization boiler (4).

3. The vehicular hearth furnace waste heat utilization apparatus according to claim 1, wherein: a water heating pipeline (401) filled with water is arranged in the waste heat utilization boiler (4), a steam pipe (402) is arranged above the waste heat utilization boiler (4), and a steam generator of the steam pipe (402) is connected.

4. The vehicular hearth furnace waste heat utilization apparatus according to claim 1, wherein: the inner diameter of the boiler air inlet pipe (3) is the same as the inner diameter of the boiler air outlet main pipe (6) and is far smaller than the inner diameter of the main air outlet pipe (2), and the inner cavity of the waste heat utilization boiler (4) is communicated with the inner cavity of the roasting furnace (1) through a pipeline.

5. The vehicular hearth furnace waste heat utilization apparatus according to claim 1, wherein: the rotating speed of the fan blade of the smoke extractor (8) can be adjusted, and the higher the rotating speed of the fan blade of the smoke extractor (8), the higher the speed of the air in the roasting furnace (1) is discharged.

6. The vehicular hearth furnace waste heat utilization apparatus according to claim 1, wherein: most of air in the roasting furnace (1) is directly discharged through the main exhaust pipe (2) when the bottom butterfly valve (7) is opened, and all air in the roasting furnace (1) can be discharged after passing through the waste heat utilization boiler (4) when the bottom butterfly valve (7) is closed.