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Heating furnace

A heating furnace and furnace tube technology, applied in the field of heating furnaces, can solve the problems of limited increase in the average thermal strength of furnace tubes, small operation flexibility of the heating furnace, uneven temperature field distribution, etc., so as to save equipment investment and operating costs, improve Processing capacity, the effect of reflecting the scale benefit of the device

Pending Publication Date: 2019-08-02
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the problems of limited increase of the average heat intensity of the furnace tube of the existing double-sided radiation heating furnace, the uneven distribution of the temperature field in the direction of the furnace height, and the small operating flexibility of the heating furnace, and provide a double-step heating system for district heating furnace

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Embodiment Construction

[0035] In the present invention, in the case of no contrary description, the used orientation words such as "up, down, left, right" usually refer to the orientations shown in the drawings and the orientations in practical applications, "inner, lower, left, right" "Outside" refers to the inside and outside of the outline of the part.

[0036] The present invention provides a heating furnace. The heating furnace 2 includes a radiation chamber 20 , a plurality of furnace tubes 22 arranged in the radiation chamber 20 and a combustion mechanism. Wherein, the side wall of the radiation chamber 20 has a stepped structure, and the stepped structure divides the inner space of the radiation chamber 20 into at least two chambers that communicate with each other and are arranged along the height direction of the radiation chamber 20, wherein, The chamber at the bottom of the radiation chamber 20 is the first chamber 21a, and the remaining chambers above the first chamber 21a are the secon...

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Abstract

The invention relates to the technical field of petrochemical industry and discloses a heating furnace. The heating furnace (2) comprises a radiation chamber (20), a plurality of furnace pipes (22) and a burning mechanism, wherein a stepped structure is arranged on a side wall of the radiation chamber and divides an inner space of the radiation chamber into at least two cavities that are communicated with each other and arrayed in a height direction of the radiation chamber; the cavity at the bottommost part of the radiation chamber is a first cavity (21a); other cavities located above the first cavity (21a) are second cavities (21b); the furnace pipes are arranged in the radiation chamber and arrayed in the height direction of the radiation chamber; and the burning mechanism comprises main burners that are mounted in the first cavity and can heat the furnace pipes, and auxiliary burners mounted in the second cavities. According to the heating furnace, the average heat intensity of thefurnace pipes can be increased significantly; the main burners and the auxiliary burners are matched for adjustment; and the operating flexibility of the heating furnace can be improved.

Description

technical field [0001] The invention relates to the field of petrochemical technology, in particular to a heating furnace. Background technique [0002] Tube heating furnace is an important heating equipment in petrochemical plants. Its design and operation level often directly affect the processing capacity, operation flexibility and operation cycle of the plant. [0003] At present, the tubular heating furnaces in the petrochemical industry can be divided into single-sided radiation heating furnaces and double-sided radiation heating furnaces according to the radiation mode. Among them, the single-sided radiation heating furnace adopts the arrangement of the furnace tube close to the furnace wall. The burner is located in the middle of the bottom of the furnace. 30kW / m 2 , and the uniformity of the heat intensity distribution in the circumferential direction of the furnace tube is poor, and the non-uniformity coefficient is about 1.8, resulting in a low utilization rate ...

Claims

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Application Information

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IPC IPC(8): C10G9/20
CPCC10G9/20
Inventor 杨军卫肖家治沈国平冯永生韩艳萍王娟肖凤杰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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