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Smoke deflection preventer for gantry industrial furnaces

An industrial furnace and flue gas technology, applied in the combustion method, combustion chamber, baffle and other directions, can solve the problems of flue gas deviation, furnace flue gas deviation, etc., to ensure smooth flow, avoid local temperature is too high and too low, The effect of increasing operational stability and operational flexibility

Active Publication Date: 2014-08-06
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of flue gas drift in the furnace of the door-type industrial furnace in the prior art, the applicant has developed a technical solution to effectively solve the flue gas drift, and adjusted the structure of the transition section in the furnace so that each part of the smoke after burning in the combustion chamber Gas, especially for the two radiation chambers in the embodiment, solves various technical problems caused by flue gas deviation

Method used

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  • Smoke deflection preventer for gantry industrial furnaces
  • Smoke deflection preventer for gantry industrial furnaces
  • Smoke deflection preventer for gantry industrial furnaces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the radiation section is composed of two relatively independent radiation chambers 6, and the convection section has only one convection chamber. The length of the bottom of the transition section is L, and the distance between the center of the bottom row of furnace tubes in the convection section and the bottom of the transition section is H. The flue gas isolation unit is arranged in the furnace bottom of the transition section so that the center line along the furnace length direction coincides with the center line of the transition section furnace bottom along the furnace length direction. A row of ejectors 2 is arranged in the length direction, and each ejector 2 ejects part of the flue gas in the furnace through a pipe 4. The distance between each ejector 2 is b, and each ejector 2 injects The flue gas width is also b, and the flue gas height h2 injected by each ejector 2 is 0.8×H. In order to ensure that the isolation zone is an area...

Embodiment 2

[0035] Such as figure 2As shown, the radiation section consists of two relatively independent radiation chambers, and the convection section has only one convection chamber. The length of the bottom of the transition section is L, and the distance between the center of the bottom row of furnace tubes in the convection section and the bottom of the transition section is H. The flue gas isolation unit is arranged in the furnace bottom of the transition section so that the center line along the furnace length direction coincides with the center line of the transition section furnace bottom along the furnace length direction. A row of burners 1 is arranged in the length direction, the distance between each burner 1 is a, the flame width of each burner 1 is also a, the flame height h1 of each burner 1 is 0.6×H, and the burner 1 The number of arrangements n=L / a=7. In addition to ensuring that the isolation unit is an area without obvious gaps, when using the burner 1, the flame i...

Embodiment 3

[0037] Such as image 3 As shown, the radiation section consists of two relatively independent radiation chambers, and the convection section has only one convection chamber. The length of the bottom of the transition section is L, and the distance between the center of the bottom row of furnace tubes in the convection section and the bottom of the transition section is H. The flue gas isolation unit is arranged in the furnace bottom of the transition section so that the center line along the furnace length direction coincides with the center line of the transition section furnace bottom along the furnace length direction. An isolation strip 3 is arranged in the length direction, the height h3 of the isolation strip 3 is 0.3×H, and the length of the isolation strip 3 is L. The isolation zone forms an isolation barrier without obvious gaps. Since the wall is denser than the burner and ejector, the isolation effect is obvious. If the isolation zone is too high, it is easy to be...

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PUM

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Abstract

The invention provides a smoke deflection preventer for gantry industrial furnaces. The smoke deflection preventer is disposed in a hearth of a gantry industrial furnace. The hearth comprises a radiation section, a transition section and a convection section. Furnace tubes are arranged in the convection section. The transition section is arranged below the furnace tubes of the convection section, and the radiation section is connected with the convection section through the transition section. The radiation section comprises at least two radiation chambers. The smoke deflection preventer is disposed in a primary smoke collection area of each radiation chamber, namely in the transition section; the smoke deflection preventer comprises an isolating unit; the isolating unit is used for isolating smoke in the radiation chambers of the gantry industrial furnace from gathering, smoke disturbance is less, and smoke deflection on any side is prevented.

Description

technical field [0001] The invention relates to a structure for preventing flue gas drift in a petrochemical plant, in particular, the invention relates to a flue gas drift prevention device for a door-type industrial furnace. Background technique [0002] In the door-type industrial furnace structure, the radiation section is composed of two or more relatively independent radiation chambers to provide different flue gas volumes, thereby providing different heat loads, and the convection section usually only has one convection chamber. Since the radiation section is located at the lower part of the convection section and is connected to the convection section through a transition section, multiple layers of furnace tubes are arranged in the convection section, and two adjacent rows of furnace tubes are alternately arranged. In a door-type industrial furnace with two radiation chambers, the furnace tube set in the convection section can be divided into two parts, bounded by t...

Claims

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Application Information

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IPC IPC(8): F23M9/00
Inventor 孙向军李光刘敬坤郭玉萍薛磊周桂娟李森高景芬
Owner CHINA PETROCHEMICAL CORP
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