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Device and a method for managing unburned residues in regenerative burners, a burner including such a device

A technology for regenerators and residues, applied in the field of regenerative burners and regenerative blast furnace gas, which can solve problems such as high operating costs

Active Publication Date: 2013-01-02
COCKERILL MAINTENANCE & INGIE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flamed or post-combustion systems that treat the flue gas before venting it to the atmosphere can control the pollution levels associated with emissions, but they also have a non-negligible impact on the environment and they have extremely high operating costs (considering to the investment and total production downtime during installation and maintenance of this equipment)

Method used

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  • Device and a method for managing unburned residues in regenerative burners, a burner including such a device

Examples

Experimental program
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Embodiment Construction

[0023] In this example, the device for managing unburned residues is installed on a regenerative burner for preheating the blast furnace gas, given the general reference BR.

[0024] The regenerative burner BR has a regenerator 5 connected at one end to a fuel feed pipe 4 opened under the control of an inlet valve 2 and to a discharge line 8 opened under the control of a discharge valve 10, the other end of which is into the combustion chamber 3.

[0025] The combustion chamber 3 is fed with oxidant (air in this example) through a combustion air feed pipe 6 controlled by a feed valve 7 . A discharge line 8 leads from the regenerator 5 to a combustion gas discharge line 9 , the access to which is controlled by a discharge valve 10 .

[0026] According to its general operating principle, the burner alternates between an intake phase and an exhaust phase. During the entry phase, the regenerator 5 produces heat to the fuel so that the enclosure receives fuel air and heated fuel ...

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PUM

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Abstract

A device for managing unburned residues, the device comprising a regenerator (5) having one end connected to a combustion enclosure (3) and an opposite end connected to a fuel admission pipe (4) and a flue gas exhaust pipe (8), the pipes being fitted with valves (2; 10) to alternate between an admission stage and an exhaust stage through the regenerator. A purge circuit (1) connected to the regenerator (5) acts before the exhaust stage to purge the regenerator of the fuel that it contains. The invention provides a corresponding method of managing unburned residues and a burner including such a device.

Description

technical field [0001] The present invention relates to a device and a method for managing unburned residues in piping implementing a regenerator. The device and method are specifically intended for the regeneration of blast furnace gases. The invention also provides a regenerative burner comprising the device. Background technique [0002] Regenerative systems are known for preheating gases with a low heating value in order to raise the flame temperature. This can reach temperatures sufficient to use the gas in industrial processes. These systems can recover heat from lean gases, such as blast furnace gases produced as a by-product of steelmaking. This has two advantages: reducing the energy consumption of steelmaking; and avoiding the requirement to vent the gas directly into the atmosphere, which often has a negative environmental impact. [0003] In a traditional regenerative system, two burners are paired and operated in a cycle that alternates between intake and di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/46F23D14/66
CPCC21B2100/06F27D99/0033F27D17/004F23D14/66F23D2900/14002F23C5/28Y02E20/34
Inventor Y·布劳德L·费朗德L·马尔帕斯
Owner COCKERILL MAINTENANCE & INGIE