Gas combustion method for primary reformer of methanol device and combustor for reformer

Abstract

The invention discloses a low-pressure gas combustion method and a combustor using the same, and particularly relates to a gas combustion method for the primary reformer of a methanol device and a combustor for the reformer. The gas combustion method comprises a step of conveying coke-oven gas and a high-pressure gas in the combustor in a volume ratio of (30% to 80%): (20% to 70%); the combustor comprises a central tube, and an outer sleeve wrapping the central tube; and the high-pressure gas is ejected from the central tube of the combustor, and the coke-oven gas is ejected from the interlayer of the outer sleeve and the central tube, so that an injection effect is acted on the coke-oven gas via the high-pressure gas, and the ejection momentum of the flame generated after mixed combustion is 23000 (kgm / s) / MW to 36000 (kgm / s) / MW. Via the gas combustion method disclosed by the invention, the heat of combustible gases contained in the coke-oven gas can be adequately utilized under the condition that a compressor is not utilized, thus reducing energy investment, adequately utilizing the calorific value of the coke-oven gas, and avoiding resource waste.

Description

technical field [0001] The invention relates to a low-pressure gas combustion method and its combustion equipment, in particular to a gas combustion method and a burner for the primary reformer of a methanol plant. Background technique [0002] Gas is the general term for gas fuel. It is a flammable gas that can provide a large amount of heat to people's production and life through combustion. There are many types; according to the source of gas, it can be divided into natural gas, artificial gas, and liquefied petroleum gas. And biomass gas; coke oven gas is a kind of artificial gas, which contains a variety of components, such as hydrogen, methane, carbon monoxide, carbon dioxide, etc. Some existing gas such as artificial gas needs to be pressurized by a compressor before combustion. The pressure of the gas itself increases through the action of an external force, and the flame after combustion will be strong and powerful as a whole, so as to achieve concentrated heating o...

AI Technical Summary

Problems solved by technology

If coke oven gas is directly used as the fuel of the reformer, as mentioned above, the flame produced by its combustion does not have sufficient rigidity, and the flame will flutter and become soft, which cannot meet the heating temperature of the reformer; if a compressor is used to convert the coke oven The gas is first compressed and then burned, which increases investment and operating costs

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