CN212719827U

CN212719827U - Air preheating device utilizing flue gas waste heat

Info

Publication number: CN212719827U
Application number: CN202021217038.1U
Authority: CN
Inventors: 程运
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-03-16
Anticipated expiration: 2030-06-28

Abstract

The utility model is suitable for a flue gas waste heat recovery technical field provides an utilize air preheating device of flue gas waste heat, and heat-resisting hose is connected to the air inlet of air pump, and heat-resisting hose keeps away from the one end of air pump and connects the flue gas and absorb the dish, and first connecting pipe is connected to the gas outlet of air pump, and first connecting pipe is kept away from air pump one end and is connected the dust filter, and the dust filter is connected the second connecting pipe, installs the fan on the heat transfer case lateral wall, installs a set of heat exchange tube in the heat transfer case, the utility model discloses the beneficial effect who reaches: the smoke can be collected in a large area; the cleaning frequency and the cleaning difficulty of the heat exchange box are reduced.

Description

Air preheating device utilizing flue gas waste heat

Technical Field

The utility model belongs to the technical field of flue gas waste heat recovery, especially, relate to an utilize air preheating device of flue gas waste heat.

Background

Due to energy shortage, the energy-saving work is further developed. Various novel advanced energy-saving furnaces are gradually improved, and the heat dissipation loss of the furnace is obviously reduced after the novel high-quality heat-insulating materials such as refractory fibers are adopted. The advanced combustion device is adopted to strengthen the combustion, the incomplete combustion amount is reduced, and the air-fuel ratio is also reasonable. However, techniques for reducing the heat loss of flue gas and recovering the residual heat of flue gas have not been developed rapidly. In order to further improve the heat efficiency of the kiln and achieve the purposes of energy conservation and consumption reduction, the recovery of the flue gas waste heat is also an important energy-saving way. The smoke is the main way of wasting energy of general energy consumption equipment, for example, the energy consumption of boiler smoke is about 15%, and other equipment such as setting machine, drying-machine and kiln of printing and dyeing industry all consume energy through the smoke. The flue gas waste heat recovery mainly converts the heat carried by the flue gas into the heat which can be utilized through a certain heat exchange mode. One of the recycling ways of the flue gas waste heat is to preheat air for combustion supporting, but the flue gas before flowing into the heat exchange device is not treated by filtered dust, so that the heat exchange device is difficult to clean after being used for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model provides an utilize air preheating device of flue gas waste heat aims at solving the flue gas that flows into before the heat transfer device and can lead to the long-time problem of wasing the difficulty after using of heat transfer device without the processing of filter dust.

The utility model is realized in such a way, the air preheating device utilizing the waste heat of the flue gas is characterized in that an air inlet of an air pump is connected with a heat-resistant hose, one end of the heat-resistant hose, which is far away from the air pump, is connected with a flue gas absorption disc, an air outlet of the air pump is connected with a first connecting pipe, one end of the first connecting pipe, which is far away from the air pump, is connected with a dust filter, the dust filter is connected with a second connecting pipe, one end of the second connecting pipe, which is far away from the dust filter, is connected with a side wall of a heat exchange box, a flue gas discharge port is formed at one side of the heat exchange box, which is far away from the second connecting pipe, a fan is arranged on the side wall of the heat exchange box, a hot gas discharge port is formed at one side of, the air pump and the fan are electrically connected with an external controller.

Furthermore, the dust filter is a bag type dust filter, and a valve is arranged at the lower end of an ash bucket of the dust filter.

Further, the valve is a solenoid valve, and the valve is electrically connected with an external controller.

Furthermore, the fan is installed on the heat exchange box through a screw.

Further, the supporting legs are hollow structures.

Furthermore, the heat exchange tube is a copper tube.

The utility model discloses the beneficial effect who reaches: one end of the heat-resistant hose, which is far away from the air pump, is connected with a smoke absorption disc, so that smoke can be collected in a large area by using the absorption disc; through the effect of dust filter can get rid of the dust granule that contains in the flue gas, reduce the cleaning frequency, the washing degree of difficulty of heat transfer case.

Drawings

Fig. 1 is a schematic view of an overall first viewing angle structure provided by the present invention;

fig. 2 is a schematic view of an overall second viewing angle structure provided by the present invention;

fig. 3 is a cross-sectional view provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that the working principle of the bag-type dust collector is the prior art, and belongs to the common general knowledge of those skilled in the art, and therefore, the detailed description thereof is omitted.

Referring to fig. 1, 2 and 3, an air preheating device using waste heat of flue gas is characterized in that an air inlet of an air pump 1 is connected with a heat-resistant hose 2, one end of the heat-resistant hose 2, which is far away from the air pump 1, is connected with a flue gas absorption disc 3, an air outlet of the air pump 1 is connected with a first connecting pipe 4, one end of the first connecting pipe 4, which is far away from the air pump 1, is connected with a dust filter 5, the dust filter 5 is connected with a second connecting pipe 7, one end of the second connecting pipe 7, which is far away from the dust filter 5, is connected with a side wall of a heat exchange box 8, a flue gas discharge port 801 is formed on one side of the heat exchange box 8, a fan 9 is installed on the side wall of the heat exchange box 8, a hot gas discharge port 802 is formed on one side of the heat exchange box 8, which, the blower 9 is electrically connected to an external controller.

The dust filtering device 5 is a bag type dust filter, the lower end of a dust hopper of the dust filtering device 5 is provided with a valve 6, and the bag type dust collector is suitable for collecting fine, dry and non-fibrous dust.

The valve 6 is an electromagnetic valve, and the valve 6 is electrically connected with an external controller, so that the labor cost is reduced.

The fan 9 is mounted on the heat exchange box 8 through screws, and the fan 9 is convenient to detach.

The support leg 804 is a hollow structure, so that materials are saved.

The heat exchange tubes 803 are copper tubes, which have excellent heat conductivity.

When the absorption plate is used, the absorption plate 3 is arranged at a smoke exhaust port, smoke enters the dust filter 5 after flowing through the air pump 1, finally enters the heat exchange box 8 to exchange heat with air, and the air subjected to waste heat is led to energy consumption equipment again through the hot air exhaust port 802 to support combustion.

The utility model discloses the beneficial effect who reaches: because one end of the heat-resistant hose 2, which is far away from the air pump 1, is connected with the smoke absorption disc 3, the smoke can be collected in a large area by using the absorption disc 3; the dust particles contained in the flue gas can be removed through the action of the dust filtering device 5, and the cleaning frequency and the cleaning difficulty of the heat exchange box 8 are reduced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The air preheating device utilizing the waste heat of the flue gas is characterized in that an air inlet of an air pump (1) is connected with a heat-resistant hose (2), one end, far away from the air pump (1), of the heat-resistant hose (2) is connected with a flue gas absorption disc (3), an air outlet of the air pump (1) is connected with a first connecting pipe (4), one end, far away from the air pump (1), of the first connecting pipe (4) is connected with a dust filtering device (5), the dust filtering device (5) is connected with a second connecting pipe (7), one end, far away from the dust filtering device (5), of the second connecting pipe (7) is connected with the side wall of a heat exchange box (8), one side, far away from the second connecting pipe (7), of the heat exchange box (8) is formed with a flue gas outlet (801), a fan (9) is installed on the side wall of the heat exchange box (8), one side, far away from the fan, install a set of heat exchange tube (803) in heat exchange case (8), four stabilizer blades (804) are connected to heat exchange case (8) lower extreme, stabilizer blade (804) are fixed in ground, air pump (1) fan (9) are connected with external controller electricity.

2. The air preheating device using the waste heat of flue gas as claimed in claim 1, wherein the dust filter (5) is a bag filter, and a valve (6) is installed at the lower end of a dust hopper of the dust filter (5).

3. The air preheating device using the waste heat of flue gas as claimed in claim 2, wherein the valve (6) is an electromagnetic valve, and the valve (6) is electrically connected with an external controller.

4. The air preheating device using the waste heat of flue gas as claimed in claim 1, wherein the fan (9) is mounted on the heat exchange box (8) through screws.

5. The air preheating device using the waste heat of flue gas as claimed in claim 1, wherein the supporting leg (804) has a hollow structure.

6. The air preheating device using the waste heat of flue gas as claimed in claim 1, wherein the heat exchange pipe (803) is a copper pipe.