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Waste heat recovery device and hot rolling production line

A waste heat recovery device and waste heat technology, applied in the field of metallurgy, can solve problems such as heat loss, heat loss, and energy waste

Pending Publication Date: 2021-01-15
SHEN KAN QINHUANGDAO GENERAL ENG DESIGN & RES INST CORP MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coiling temperature of hot-rolled stainless steel is generally 800°C. After coiling, the steel coil is transported to the finished product span through a collection device for air cooling or placed in a slow cooling pit for slow cooling, so that a large amount of high-quality heat contained in the steel coil itself is directly lost to the air. , resulting in a waste of energy
[0003] However, the existing waste heat recovery device has the problem of serious heat loss, which makes the waste heat recovery rate not high

Method used

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  • Waste heat recovery device and hot rolling production line
  • Waste heat recovery device and hot rolling production line
  • Waste heat recovery device and hot rolling production line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The embodiment provides a waste heat recovery device, which can be used in the production of hot-rolled steel, and can recover the waste heat of the hot-rolled steel 9 itself, so as to achieve the effect of energy recovery and energy saving, so as to solve the problem of hot-rolled steel production process. problem of energy waste.

[0039] Such as figure 1 and figure 2 As shown, the waste heat recovery device includes a heat exchange chamber 1 . The end of the heat exchange chamber 1 is provided with a material delivery port 12 so that materials can enter and leave the heat exchange chamber 1 through the material delivery port 12 . Wherein, the material may be hot-rolled steel 9; specifically, the material may be a hot-rolled stainless steel coil after hot-rolling. The hot-rolled steel 9 can exchange heat with the gas in the heat exchange chamber 1 to form heat energy gas.

[0040] Certainly, in some other embodiments, the hot-rolled steel 9 may also be hot-rolled...

Embodiment 2

[0046] The embodiment provides a waste heat recovery device, it can be understood that this embodiment is a further improvement on the basis of the first embodiment.

[0047] Such as figure 1 and figure 2 As shown, the heat exchange chamber 1 includes a shell 11, and the inside of the shell 11 is the space for heat exchange between the hot-rolled steel 9 and the low-temperature gas.

[0048] In some embodiments, the casing 11 may include a steel shell and an insulating material filled inside the steel shell. Therefore, the heat insulation effect of the housing 11 is realized, and the heat inside the housing 11 is guaranteed not to be dissipated outward, that is, the heat exchange chamber 1 is insulated from the external environment, and the waste heat recovery rate is improved.

[0049] Exemplarily, the insulation material filled inside the housing 11 can be selected from materials such as polyurethane foam, glass wool, foamed cement, and rock wool.

[0050] In an embodime...

Embodiment 3

[0089] The embodiment also provides a hot rolling production line, including the waste heat recovery device provided in the first or second embodiment.

[0090] Wherein, the hot rolling production line may also include sequentially setting a heating furnace, a hot rolling mechanism and a coiler. The strip steel heated by the heating furnace is transported to the hot rolling mechanism for hot rolling, and then sent to the coiler to be coiled into steel coils. The hot-rolled steel 9 after being coiled can be sent to the waste heat recovery device for waste heat recovery, and the hot-rolled steel 9 itself is cooled down. The cooled hot rolled steel 9 can be transferred to the finished product bay for storage.

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Abstract

The invention discloses a waste heat recovery device and a hot rolling production line and relates to the technical field of metallurgy. The waste heat recovery device is used for recovering waste heat in hot rolled steel and comprises a heat exchange chamber, and the hot rolled steel exchanges heat with gas in the heat exchange chamber to form heat energy gas. A material conveying port is formedin the end of the heat exchange chamber and is used for allowing the hot rolled steel to enter and exit from the heat exchange chamber. The material conveying port is provided with a sealing mechanism, and the sealing mechanism is used for sealing or opening the material conveying port. The hot rolling production line comprises the waste heat recovery device. According to the waste heat recovery device provided by the invention, the high recovery rate of hot rolled steel waste heat can be achieved, and therefore an energy-saving effect is achieved.

Description

technical field [0001] The application relates to the field of metallurgy technology, in particular to a waste heat recovery device and a hot rolling production line. Background technique [0002] In the metallurgical industry, energy consumption accounts for a large part of the product cost ratio. The coiling temperature of hot-rolled stainless steel is generally 800°C. After coiling, the steel coil is transported to the finished product span through a collection device for air cooling or placed in a slow cooling pit for slow cooling, so that a large amount of high-quality heat contained in the steel coil itself is directly lost to the air. , resulting in energy waste. [0003] However, the existing waste heat recovery device has the problem of serious heat loss, so that the waste heat recovery rate is not high. Contents of the invention [0004] The application provides a waste heat recovery device and a hot rolling production line, which can recover waste heat in hot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D21/00F28F11/00
CPCF28D21/0001F28D2021/0019F28F11/00
Inventor 赵富强喇思兰李凌宇李宁侯俊卿张碧辉罗婧青
Owner SHEN KAN QINHUANGDAO GENERAL ENG DESIGN & RES INST CORP MCC
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