Combustion method of a catalytic auxiliary combustion chamber

Abstract

The invention provides a combustion method for a catalytic auxiliary combustion chamber, and the combustion method uses propane as fuel. The market price of propane is lower than that of liquefied gas, and the calorific value of propane is higher than that of liquefied gas. Considering the use of propane instead of liquefied gas as the fuel for the auxiliary combustion chamber can not only meet the heating demand of the process, but also save energy and reduce consumption, and extract high additional The effect of reducing the combustion cost after the value product. The invention breaks the fuel required by the conventional auxiliary combustion chamber for catalysis, adopts low value-added fuel, has high calorific value and low cost, and controls various combustion process conditions in the process of combustion in the catalytic auxiliary combustion chamber, and realizes the use of propane as a The fuel in the catalytic auxiliary combustion chamber is combusted. The present invention uses propane to replace the combustion oil, and reduces the risk that the over-temperature of the auxiliary combustion chamber affects the performance and life of the equipment.

Description

technical field [0001] The invention relates to the technical field of catalysis, in particular to a combustion method of a catalysis auxiliary combustion chamber. Background technique [0002] Catalytic auxiliary combustion chambers are indispensable in catalytic devices. It has two main functions. First, during the start-up of the catalytic device, the burner is in a combustion state, that is, the catalytic auxiliary combustion chamber generates hot flue gas, which preheats the subsequent device to achieve the effect of the oven. Its two, during the normal operation of the catalytic device, the burner is in a closed state, that is, the catalytic auxiliary combustion chamber just plays the role of the passage of the main wind of the catalytic device. During the start-up of the catalytic device, the auxiliary combustion chamber needs to be ignited to heat up. The traditional operation method is to use dry gas (gas) to ignite to heat up. Because the calorific value of dry ga...

AI Technical Summary

Problems solved by technology

The calorific value of dry gas is low, and the heat demand cannot be met in the later stage

Although the calorific value of liquefied gas is relatively high, with the increase in propylene production and the production trend of MTBE, high value-added components such as propylene and isobutylene in liquefied gas have not been extracted, and burning as fuel will result in high costs and high additional waste of value products

After switching to burning oil to heat up, because the burning oil needs to be atomized to burn fully, it is necessary to use atomized steam and make a good ratio of oil and steam to prevent insufficient combustion, causing black smoke from the chimney or local overheating. The temperature phenomenon will affect the service life of the equipment, so the whole adjustment process is difficult, the temperature is difficult to control, and it is easy to cause overheating

In summary, although liquefied gas has a high calorific value, with the production trend of propylene production and MTBE, the high value-added components in liquefied gas are not extracted as fuel, resulting in the loss of high value-added products and high costs; Fuel oil has a high calorific value, but it is difficult to adjust, which may easily cause the equipment to overheat and affect the service life