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Enhanced Waste Heat Recovery for Combustion Using a Pre-Reformer Combined with Oxygen and Fuel Preheating

A pre-reformer and pre-reforming technology, applied in gaseous fuel pretreatment, lighting and heating equipment, gaseous fuel supply/distribution, etc., can solve problems such as sulfuric acid and sulfate condensation

Active Publication Date: 2021-08-27
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, although the waste flue gas has thermal energy to operate the SMR, if the waste flue gas from the glass melting furnace is directly applied to operate the SMR, there will be the following problems: particulates are present throughout the flue gas channel and in the flue gas Sulfuric acid and sulphate condensation in the low temperature part of the channel

Method used

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  • Enhanced Waste Heat Recovery for Combustion Using a Pre-Reformer Combined with Oxygen and Fuel Preheating
  • Enhanced Waste Heat Recovery for Combustion Using a Pre-Reformer Combined with Oxygen and Fuel Preheating
  • Enhanced Waste Heat Recovery for Combustion Using a Pre-Reformer Combined with Oxygen and Fuel Preheating

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Embodiment Construction

[0084] While the invention will be described in conjunction with several embodiments, it will be understood that they are not intended to limit the invention to those embodiments. On the contrary, the intention is to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.

[0085] The present invention is a furnace whose burners receive a feed of oxidant and pre-reformed natural gas, a recuperator for exchanging heat between hot flue gas (from said furnace) and an air stream, and a For pre-reformed natural gas (containing methane and heavier hydrocarbons (i.e. C 2+ A novel combination of pre-reformers for hydrocarbons). In this way, two key advantages arise.

[0086] First, by pre-reforming the natural gas fed as fuel gas to the burners of the furnace, it is possible to add a greater amount of thermal energy to the fuel gas than is normally achieved by conventional fuel preheatin...

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Abstract

A method for operating a glass melting furnace is disclosed, the method comprising the steps of feeding a non-pre-reformed hydrocarbon fuel gas stream to a pre-reformer to form a pre-reformed hydrocarbon fuel gas stream, The stream of pre-reformed hydrocarbon fuel gas is fed to the burners of the furnace where the oxidant and the pre-reformed hydrocarbon fuel gas are combusted to produce flue gas which is passed between the recuperator and the Heat exchange with the flue gas heats the air and transfers heat from the heated air to the pre-reformer tubes of the pre-reformer. A glass melting furnace system is also disclosed.

Description

technical field [0001] The present invention relates to systems and methods for enhanced waste heat recovery using a pre-reformer for combustion in combination with oxygen and fuel pre-heating. Background technique [0002] Recently, it has been demonstrated for the glass industry to use residual energy from flue gases to preheat oxy-fuel for oxy-fuel combustion to reduce natural gas consumption and thus reduce CO 2 A promising solution to emissions. When oxygen and natural gas are preheated to 500°C and 450°C respectively, the described technology demonstrates about 9%-10% improvement in combustion efficiency, which means 9%-10% savings in oxygen and natural gas. Although technology development has been relatively successful, there is still room for improvement in residual energy recovery. [0003] Operating a steam methane reformer (SMR) using residual energy from glass or steel reheating furnaces has been discussed for a long time and fuel conversion technologies using ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23K5/00
CPCF23K5/007F23L7/007F23K2900/01041F23K2400/10Y02E20/34Y02P40/50C03B5/237
Inventor 姜泰宇罗伯特·A·加利亚诺帕沃尔·普兰达阿什坎·伊兰沙希
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE