Waste heat boiler

A technology of waste heat boiler and waste gas flow, which is applied in the direction of heat exchange equipment, heat exchanger type, indirect heat exchanger, etc., can solve the problems of waste heat boiler life reduction, shortened maintenance cycle, hot spots on the wall of exhaust chamber, etc., and achieve improvement The effect of service life, improvement of function and life, and corrosion prevention

Inactive Publication Date: 2009-01-14
ARVOS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the adjusting plugs currently used, there is the disadvantage that the exhaust gas flowing out from the outlet end of the bypass pipe which is opened forms a strong plume. Risk of hot spots on the exhaust chamber walls
One or more of these hot spots cause thermal damage to the exhaust chamber wall, which in turn leads to undesired shortened maintenance intervals and reduced waste heat boiler life

Method used

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  • Waste heat boiler
  • Waste heat boiler
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Examples

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Embodiment Construction

[0024] FIG. 1 schematically shows a waste heat boiler 1 in longitudinal section. Such waste heat boilers are required for different chemical and petrochemical processes. The waste heat boiler 1 has a casing 2 which encloses a large number of heat transfer tubes 3 and a centrally arranged bypass tube 4, wherein the tubes 3, 4 are surrounded at their inlet and outlet ends 5, 6 by tube end plates 28 such that A cavity for conducting a cooling medium 31 for cooling the high-temperature exhaust gas flow 27 is formed in the housing 2 and the end plate 28 . The bypass pipe 4, which preferably has a larger diameter than the heat transfer pipe 3, can be partially or completely insulated over its length, so that the sometimes very high temperature exhaust gas 27 on the bypass pipe 4 cannot be conveyed too much to the cooling medium 31 The heat flows through the waste heat boiler 1. Viewed along the flow direction of the exhaust gas 27, that is, parallel to the longitudinal axis of the...

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Abstract

Waste heat boiler, comprising a large number of heat transfer tubes (3) and a centrally arranged bypass tube (4), which respectively have an inlet end (5) and an outlet end (6); means (7) for introducing water (31); including means (8) for introducing a high temperature waste gas stream (27) into the pipe inlet end (5) and passing the waste gas flow (27) through the pipe; including means for drawing out water A device (9) for steam / steam and a device (10) for withdrawing the cooled exhaust gas flow; including a regulating device (11), which can be adjusted axially by means of a device which is arranged on the outlet end of the bypass pipe and can be adjusted axially by means of the regulating device The plug (12) regulates the gas flow velocity and flow in the bypass pipe; the plug can be cooled by the cooling medium (32) and extends into the conically enlarged outlet end of the bypass pipe, and the gas circulation cross-section (22) is in the gas circulation The area ( 21 ) expands uniformly or non-uniformly irrespective of the position of the opened plug ( 12 ).

Description

technical field [0001] The invention relates to a waste heat boiler comprising a plurality of heat transfer tubes and a centrally located bypass tube in a cylindrical housing, each having an inlet port and an outlet port and including a regulating device for exhausting the waste heat boiler The temperature is kept within a certain temperature range. The present invention particularly relates to a waste heat boiler. In order to control the exhaust temperature of the waste heat boiler, its regulating device is installed on the outlet end of the bypass pipe. Background technique [0002] For many chemical and petrochemical processes, waste heat boilers require the flow of different gaseous and / or liquid media through the tubes and shell faces (channel side). Here, the high-temperature exhaust gas from the working process is usually fed to heat transfer tubes and bypass tubes which are arranged as tube bundles in the shell of the waste heat boiler. When the high-temperature ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/16F28F27/02
CPCF28F27/02F28D7/16F22B1/1838F22B35/001F22B1/1884F28F2250/06F22B35/007
Inventor J·耶克勒H·奥尔曼K·罗滕皮勒
Owner ARVOS GMBH
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