Cascade utilization system of ring cooling fan

Abstract

The utility model discloses a cascade utilization system of an annular air cooler. The circular cooler comprises a high-temperature section, a secondary high-temperature section, a medium-temperature section, a medium-low-temperature section and a low-temperature section which are annularly arranged; a high-temperature section ring cooling fan, a secondary high-temperature section ring cooling fan, a medium-temperature section ring cooling fan, a medium-low-temperature section ring cooling fan and a low-temperature section ring cooling fan are arranged on the ring cooling machine corresponding to each section; a medium-low temperature air outlet chimney is arranged at the tail part of the medium-low temperature section of the circular cooler; a low-temperature air outlet chimney is arranged at the tail part of the low-temperature section of the circular cooler; wherein a low-temperature section connector is arranged on the low-temperature section air outlet chimney; the low-temperature section interface is communicated with an air inlet of the medium-low-temperature section ring cooling fan through a pipeline; a medium-low temperature section connector is arranged on the medium-low temperature section air outlet chimney; and the medium and low temperature section interface is communicated with an air inlet of the medium temperature section ring cooling fan through a pipeline. The waste heat recovery system has the advantages of high waste heat recovery efficiency, low operation energy consumption, small daily maintenance workload, high equipment operation rate, zero emission of the circular cooler and the like.

Description

Technical Field

[0001] The utility model relates to a cascade utilization system of a circular cooling fan Background Art

[0002] In the medium and low temperature sections of the circular cooler, due to the relatively low waste heat grade and lower recovery value compared with the high temperature section, most steel enterprises do not recover it. In the medium and low temperature sections, cold air is generally sucked from the environment by the circular cooling fan to cool the ore, and the generated medium and low temperature waste gas is directly discharged through the chimney. This treatment method does not meet the existing environmental protection requirements. Content of the Utility Model

[0003] To overcome the above defects, the purpose of the utility model is to provide a cascade utilization system of a circular cooling fan.

[0004] To achieve the above purpose, the cascade utilization system of the circular cooling fan of the utility model includes a high temperature section, a sub-high temperature section, a medium temperature section, a medium and low temperature section and a low temperature section arranged in a ring shape on the circular cooler; corresponding to each section on the circular cooler, there are a high temperature section circular cooling fan, a sub-high temperature section circular cooling fan, a medium temperature section circular cooling fan, a medium and low temperature section circular cooling fan and a low temperature section circular cooling fan;

[0005] There is a medium and low temperature air outlet chimney at the tail of the medium and low temperature section of the circular cooler; there is a low temperature air outlet chimney at the tail of the low temperature section of the circular cooler;

[0006] Among them, there is a low temperature section interface arranged on the low temperature section air outlet chimney; the low temperature section interface is connected to the air inlet of the medium and low temperature section circular cooling fan through a pipeline;

[0007] There is a medium and low temperature section interface arranged on the medium and low temperature section air outlet chimney; the medium and low temperature section interface is connected to the air inlet of the medium temperature section circular cooling fan through a pipeline.

[0008] Further, an electric control valve is arranged at the low temperature section interface.

[0009] Further, an electric control valve is arranged at the medium and low temperature section interface.

[0010] Further, an electric control valve is arranged at the air inlet of the medium temperature section circular cooling fan.

[0011] Further, an electric control valve is arranged at the air inlet of the medium and low temperature section circular cooling fan.

[0012] Further, it further includes a control device for controlling the opening degree of the electric control valve.

[0013] To achieve the above purpose, the cascade utilization method of the circular cooling fan of the utility model is realized by using the above circular cooler; the method at least includes the following steps:

[0014] An electric control valve is provided at the interface of the low-temperature section and / or an electric control valve is provided at the interface of the medium-low temperature section to control the amount of waste gas entering the medium-temperature section of the annular cooler fan.

[0015] Furthermore, the method further includes the following steps:

[0016] A air mixing device is provided at the inlet of the medium-temperature section annular cooler fan and / or the medium-low temperature section annular cooler fan, and is equipped with an electric control valve to control the fan to inhale ambient air, so as to realize the proportional adjustment of the cold and hot air volumes.

[0017] The annular cooler of the present utility model cascades the waste gas in the low-temperature section to the air inlet of the medium-low temperature section annular cooler fan, cascades the waste gas in the medium-low temperature section of the annular cooler to the air inlet of the medium-temperature section annular cooler fan, and the waste gas in the medium-temperature section goes to the flue gas internal circulation, so as to realize the recycling of the medium-temperature section flue gas of the annular cooler and the cascade utilization of the waste gas in the low-temperature section, taking into account the requirements of environmental protection, energy conservation, consumption reduction, etc. The whole process adopts a non-powered design, and finally achieves the purposes of high waste heat recovery efficiency, low operation energy consumption, small daily maintenance workload, high equipment operation rate, and zero emission of the annular cooler. The present utility model has the advantages of high waste heat recovery efficiency, low operation energy consumption, small daily maintenance workload, high equipment operation rate, and zero emission of the annular cooler. Description of the Drawings

[0018] Figure 1 It is a top view schematic diagram of the present utility model.

[0019] Figure 2 It is Figure 1 a schematic diagram when the medium-temperature section annular cooler fan 6 of

[0020] Figure 3 It is Figure 2 a side view of Detailed Embodiments

[0021] The embodiments of the present utility model will be described in detail below with reference to the drawings.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected to" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Based on the existing blast ring cooler, using the existing 5 ring cooler fans, the flue gases in the high-temperature section and the sub-high-temperature section corresponding to the 1# and 2# fans (high-temperature section fans) respectively go to the waste heat boiler, and the waste gas of the medium-temperature section fan goes to the flue gas internal circulation (not within the scope of this system). This solution mainly considers the cascade utilization of the medium-low temperature section and low temperature section waste gases corresponding to the 4# and 5# fans.

[0026] As Figure 1 shown, the ring cooler 8 of the present utility model includes a high-temperature section, a sub-high-temperature section, a medium-temperature section, a medium-low temperature section and a low temperature section arranged in a ring shape; corresponding to each section on the ring cooler, there are a high-temperature section ring cooler fan (1# fan), a sub-high-temperature section ring cooler fan (2# fan), a medium-temperature section ring cooler fan (3# fan), a medium-low temperature section ring cooler fan (4# fan) and a low temperature section ring cooler fan (5# fan); corresponding to each section of the ring cooler fan, there are a high-temperature section air outlet chimney 1, a sub-high-temperature section air outlet chimney 2, a medium-temperature section air outlet chimney 3, a medium-low temperature section air outlet chimney 4 and a low temperature section air outlet chimney 5.

[0027] Among them, a low temperature section interface is provided on the low temperature section air outlet chimney 5; the low temperature section interface is connected to the air inlet of the medium-low temperature section ring cooler fan 7 through a pipeline;

[0028] A medium-low temperature section interface is provided on the medium-low temperature section air outlet chimney 4; the medium-low temperature section interface is connected to the air inlet of the medium-temperature section ring cooler fan 6 through a pipeline.

[0029] Exhaust gas in the medium- and low-temperature sections of the annular cooler: At the existing No. 5 chimney at the tail of the annular cooler, one waste gas cascade utilization interface is provided, and the interface is located at a suitable position above the sealing cover of the annular cooler. Through the waste gas cascade utilization interface, the hot exhaust gas corresponding to the No. 5 annular cooler fan (low-temperature section) of the annular cooler is sent to the inlet of the No. 4 annular cooler fan (medium- and low-temperature section); at the existing No. 4 chimney at the tail of the annular cooler, one waste gas cascade utilization interface is provided, and the interface is located at a suitable position above the sealing cover of the annular cooler. Through the waste gas cascade utilization interface, the hot exhaust gas corresponding to the No. 4 annular cooler fan (medium- and low-temperature section) of the annular cooler is sent to the inlet of the No. 3 annular cooler fan (medium-temperature section); realizing zero emissions of flue gas, recycling the hot exhaust gas of the annular cooler, and improving the waste heat recovery efficiency. Electric control valves are provided at the two interfaces, and the exhaust gas volume entering the No. 3 annular cooler fan (medium-temperature section) can be controlled as needed; and a mixing device is provided at the inlet of the cascade utilization annular cooler fan, and an electric control valve is also equipped at its inlet, which can control the ambient air inhaled by the fan to realize the proportional adjustment of the cold and hot air volumes.

[0030] The above has described the present utility model in detail with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present utility model. Many other changes and modifications made without departing from the concept and scope of the present utility model should be regarded as within the protection scope of the present utility model.

[0031] In the description of this specification, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0032] The above is only the specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claimed rights.

Claims

1. A cascade utilization system for a circular cooling fan, which includes a high-temperature section, a sub-high-temperature section, a medium-temperature section, a medium-low temperature section, and a low-temperature section arranged in a ring shape on the circular cooling machine; it is characterized in that, On the corresponding sections of the annular cooler, there are high-temperature section annular cooler fans, sub-high-temperature section annular cooler fans, medium-temperature section annular cooler fans, medium-low temperature section annular cooler fans and low-temperature section annular cooler fans; At the tail of the medium-low temperature section of the annular cooler, there is a medium-low temperature air outlet chimney; at the tail of the low-temperature section of the annular cooler, there is a low-temperature air outlet chimney; Among them, there is a low-temperature section interface provided on the low-temperature section air outlet chimney; the low-temperature section interface is communicated with the air inlet of the medium-low temperature section annular cooler fan through a pipeline; There is a medium-low temperature section interface provided on the medium-low temperature section air outlet chimney; the medium-low temperature section interface is communicated with the air inlet of the medium-temperature section annular cooler fan through a pipeline.

2. The cascade utilization system of the annular cooling fan according to claim 1, wherein An electric control valve is provided at the low-temperature section interface.

3. The cascade utilization system of the annular cooling fan according to claim 1, wherein An electric control valve is provided at the medium-low temperature section interface.

4. The cascade utilization system of the annular cooling fan according to claim 1, characterized in that, An electric control valve is provided at the inlet of the medium-temperature section annular cooler fan.

5. The cascade utilization system of the annular cooling fan according to claim 1, wherein, An electric control valve is provided at the inlet of the medium-low temperature section annular cooler fan.

6. The closed-circuit cooling fan cascade utilization system according to claim 2, 3, 4 or 5, characterized in that It also includes a control device for controlling the opening degree of the electric control valve.

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