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High temp, energy saving steel pipe type air preheater

An air preheater, steel tube technology, applied in lighting and heating equipment, combustion methods, indirect carbon dioxide emission reduction, etc., can solve problems such as difficult to solve thermal expansion, inability to meet new parameters, etc.

Inactive Publication Date: 2005-01-12
江阴市和荣燃烧设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Whether the traditional steel pipe air preheater is vertical or horizontal, there are tube sheets at the inlet and outlet ends of the tube bundle. Difficult to solve thermal expansion problem
Therefore, the structure can no longer meet the requirements proposed by the new parameters

Method used

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  • High temp, energy saving steel pipe type air preheater
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  • High temp, energy saving steel pipe type air preheater

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Embodiment Construction

[0019] see Figure 1~2 , Figure 1~2 It is a cross-sectional view of the overall structure of the high-temperature energy-saving steel pipe-type air preheater with a single return tube bundle of the present invention. It mainly consists of a preheater shell 1 and a single return tube bundle 2 . The preheater shell 1 is composed of a steel frame 11 , a wall plate 12 and an inner lining 13 . A single return tube bundle 2 consists of a low-temperature header 21 with an inlet flange, a low-temperature tube bundle 22, an intermediate header 23, a high-temperature tube bundle 24, and a high-temperature header 25 with an inlet flange. The upper end of the tubes of the low-temperature tube bundle 22 is welded together with the bottom of the low-temperature header 21 according to the same tube spacing and row spacing; the tubes of the high-temperature tube bundle 24 are welded together with the bottom of the high-temperature header 25 according to the same tube spacing and row spacin...

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Abstract

The high temperature energy saving steel pipe type air pre-heater includes casing; and return pipe bundle comprising low temperature pipe header, low temperature pipe bundle, middle pipe header, high temperature pipe bundle and high temperature pipe header. The low temperature pipe bundle has upper pipe ends connected to the low temperature pipe header; the high temperature pipe bundle has upper pipe ends connected to the high temperature pipe header; both the high temperature pipe bundle and the low temperature pipe bundle have their lower pipe ends connected to the middle pipe heater, and the said five parts constitute out U-shape. The return pipe bundle has upper part connected to the top of the casing and lower part suspended; and the caisng has right and left flue inlet and outlet and upper part as return pipe bundl installing port and air inlet and outlet. When fume temperature changes, the pipe bundles and the middle pipe header may change their length freely.

Description

Technical field: [0001] The invention relates to a high-temperature energy-saving steel pipe type air preheater. It is mainly used in the waste heat recovery system of flue gas of tubular heating furnace. It belongs to the technical field of petrochemical equipment. Background technique: [0002] At the end of the 1970s, due to the emergence of the global energy crisis, the large energy-consuming tubular heating furnaces in the petrochemical industry adopted various energy-saving measures to recover the waste heat of the flue gas to reduce the exhaust gas temperature and improve the thermal efficiency of the furnace. Among the many energy-saving measures, the system that uses the air preheater to directly preheat the combustion air from the flue gas is more convenient and self-contained without being restricted by the technological process on the device, which has become the most important energy-saving measure. The steel pipe air preheater is widely used because of its si...

Claims

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Application Information

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IPC IPC(8): F23L15/04
CPCY02E20/34
Inventor 周国华陶贤曹惠忠刘亚萍
Owner 江阴市和荣燃烧设备有限公司
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