CN203249508U - Heat pipe waste heat recovery system for aluminum melting furnace - Google Patents

Abstract

The utility model discloses a heat pipe waste heat recovery system of an aluminum melting furnace. The second pipeline is connected with the mixing fan, the second pipeline is provided with an electric control valve, the electric control valve is connected with the automatic controller, the flue gas collection pipeline is provided with a temperature measuring instrument, and the temperature measuring instrument will The measured information is transmitted to the automatic controller, which is used to control the electric regulating valve according to the received information. The heat pipe waste heat recovery system of the aluminum melting furnace of the utility model adopts the principle of automatic air mixing and temperature control, which solves the problem that the exhaust gas temperature of the reflective aluminum melting furnace is high and the conventional waste heat recovery device is difficult to recycle; and the system flow is short , high recovery rate and low investment.

Description

Heat pipe waste heat recovery system for aluminum melting furnace

technical field

The utility model relates to the technical field of waste heat recovery for energy saving and emission reduction, in particular to a heat pipe waste heat recovery system of an aluminum melting furnace. the

Background technique

At present, most aluminum melting furnaces in my country still use traditional heating technology. The exhaust gas temperature is generally 920-980°C, and the heat taken away accounts for 45-52% of energy consumption. A large part of this part of waste heat has not been recovered, and it is discharged into the atmosphere in vain. Not only caused a huge waste of energy, but also caused environmental pollution. the

Utility model content

The utility model overcomes the disadvantages of the prior art and provides a heat pipe waste heat recovery system of an aluminum melting furnace with a high waste heat recovery rate. the

Considering the above-mentioned problems in the prior art, according to one aspect of the present invention, in order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a heat pipe waste heat recovery system for an aluminum melting furnace, including a heat pipe waste heat steam generator, The waste heat steam generator of the heat pipe is respectively connected with the flue gas collection pipe and the smoke exhaust flue. The regulating valve is connected with the automatic controller, and the flue gas collection pipe is provided with a temperature measuring instrument, and the temperature measuring instrument transmits the measured information to the automatic controller, and the automatic controller uses the For controlling the electric regulating valve. the

In order to better realize the utility model, a further technical solution is: according to an embodiment of the utility model, the second pipeline is provided with a high-temperature cut-off valve. the

According to an embodiment of the present utility model, the flue gas collection pipe is provided with a first slide valve. the

According to an embodiment of the present utility model, a second slide valve is arranged on the exhaust flue. the

According to an embodiment of the utility model, the heat pipe waste heat steam generator includes a steam drum and a smoke box, and a heat pipe of a heat conducting element runs through the steam drum and the smoke box. the

According to an embodiment of the utility model, the steam drum is provided with a soft water inlet. the

The utility model can also be: according to an embodiment of the utility model, the steam drum is provided with a steam outlet. the

Compared with the prior art, the beneficial effect of the utility model is that: the heat pipe waste heat recovery system of the aluminum melting furnace of the utility model adopts the principle of automatic air mixing and temperature control, and solves the problem of high exhaust gas temperature of the reflective aluminum melting furnace, which is difficult for the conventional The waste heat recovery device is difficult to recycle; and the system has short flow, high recovery rate and low investment. In the experiment, it was found that the waste heat recovery rate can reach more than 40%. The waste heat of flue gas is recovered to produce steam for the gasifier, thus saving energy. the

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiment of the present application document or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiment or the prior art. Apparently, the accompanying drawings in the following description The drawings are only references to some embodiments in the present application documents, and those skilled in the art can also obtain other drawings based on these drawings without creative efforts. the

Fig. 1 shows a schematic structural diagram of a heat pipe waste heat recovery system of an aluminum melting furnace according to an embodiment of the present invention. the

Among them, the names corresponding to the reference signs in the drawings are: 1. Smoke collection pipe, 2. First flapper valve, 3. Mixer fan, 4. Second pipeline, 5. Automatic controller, 6. Electric valve Regulating valve, 7. High temperature cut-off valve, 8. Temperature measuring instrument, 9. Heat pipe of heat conduction element, 10. Steam drum, 11. Smoke box, 12. Soft water inlet, 13. Steam outlet, 14. Flue gas inlet, 15, Smoke outlet, 16, smoke exhaust flue, 17, the second flapper valve. the

Detailed ways

The utility model will be further described in detail below in conjunction with the examples, but the implementation of the utility model is not limited thereto. the

Fig. 1 shows a schematic structural diagram of a heat pipe waste heat recovery system of an aluminum melting furnace according to an embodiment of the present invention. As shown in Figure 1, a heat pipe waste heat recovery system for an aluminum melting furnace includes a flue gas collection system, an air mixing and temperature automatic control system, a heat pipe waste heat steam generator, and a smoke exhaust system. The smoke collection system and the smoke exhaust system include the smoke collection pipe 1, the smoke exhaust flue 16, the first flapper valve 2 and the second flapper valve 17; the air mixing and temperature automatic control system includes the mixing fan 3, the second Pipeline 4, temperature controller, electric regulating valve 6, temperature measuring instrument 8; the heat pipe waste heat steam generator includes a number of heat conduction element heat pipes 9, the heat conduction element heat pipe 9 is filled with heat exchange working fluid, heat conduction element The heat pipe 9 passes through the wall of the steam drum 10 and is arranged in the smoke box 11 and the steam drum 10, and at the same time separates the heat pipe waste heat steam generator into a heating section and a condensation section for waste heat recovery. the

A further detailed description will be made below in conjunction with accompanying drawing 1: the heat pipe waste heat steam generator is divided into a steam drum 10 and a smoke box 11, the heat-conducting element heat pipe 9 runs through the steam drum 10 and the smoke box 11, and the smoke box 11 is provided with a smoke inlet 14 and The flue gas outlet 15, the smoke box 11 of the heat pipe waste heat steam generator is connected to the flue gas collection pipe 1 through the flue gas inlet 14, and connected to the flue gas exhaust duct 16 through the flue gas outlet 15; the steam drum 10 is provided with a soft water inlet 12 and steam outlet 13. The flue gas collection pipe 1 is connected to the mixer 3 through the second pipe 4, and the second pipe 4 is provided with an electric regulating valve 6, and the electric regulating valve 6 is connected to the automatic controller 5, and the flue gas collecting The pipeline 1 is provided with a temperature measuring instrument 8, and the temperature measuring instrument 8 transmits the measured information to the automatic controller 5, and the automatic controller 5 is used to control the electric regulating valve 6 according to the received information. A high temperature cut-off valve 7 may also be arranged on the second pipeline 4 . the

The first gate valve 2 is arranged on the smoke collection pipe 1 and is used to control the on-off of the smoke collection pipe 1 . the

The second gate valve 17 is arranged on the smoke exhaust flue 16 and is used for controlling the on-off of the smoke exhaust flue 16 . the

During specific use, the flue gas is adjusted to a suitable temperature through the air mixing and automatic temperature control system, and the heat is transferred to the soft water in the steam drum 10 by passing over the heat conduction element heat pipe 9 in the smoke box 11, so that the soft water in the steam drum 10 Evaporation is steam, and water vapor is sent gas generator to use from steam outlet 13. the

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. the

Although the invention has been described herein with reference to a number of illustrative embodiments of the invention, it should be understood that many other modifications and implementations can be devised by those skilled in the art which will fall within the scope of this application. within the scope and spirit of the principles disclosed. the

Claims (7)

1. A heat pipe waste heat recovery system of an aluminum melting furnace, characterized in that it comprises a heat pipe waste heat steam generator, and the heat pipe waste heat steam generator is respectively connected with a flue gas collection pipe and a smoke exhaust flue, and the flue gas collection pipe The second pipeline is connected with the mixing fan, the second pipeline is provided with an electric control valve, the electric control valve is connected with the automatic controller, the flue gas collection pipeline is provided with a temperature measuring instrument, and the temperature measuring instrument The measured information is transmitted to the automatic controller, and the automatic controller is used to control the electric regulating valve according to the received information. 2. The heat pipe waste heat recovery system of an aluminum melting furnace according to claim 1, wherein a high temperature cut-off valve is arranged on the second pipeline. 3. The heat pipe waste heat recovery system of an aluminum melting furnace according to claim 1, wherein a first slide valve is arranged on the flue gas collection pipe. 4. The heat pipe waste heat recovery system of an aluminum melting furnace according to claim 1, wherein a second slide valve is arranged on the exhaust flue. 5. The heat pipe waste heat recovery system of an aluminum melting furnace according to any one of claims 1 to 4, characterized in that, the heat pipe waste heat steam generator includes a steam drum and a smoke box, and the steam drum and the smoke box run through There are heat pipes with heat conducting elements. 6. The heat pipe waste heat recovery system of an aluminum melting furnace according to claim 5, wherein a soft water inlet is provided on the steam drum. 7. The heat pipe waste heat recovery system of an aluminum melting furnace according to claim 5, wherein a steam outlet is provided on the steam drum.

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