Method for combustion desulfurization of petroleum coke and reduction of mirabilite content in glass industry

Abstract

The invention discloses a method for combustion desulfurization of petroleum coke and reduction of mirabilite content in glass industry. Petroleum coke powder and active calcium oxide are uniformly mixed according to a certain ratio, then the obtained mixture is fed into a melting furnace by using high-pressure air through a fuel spray pipe, a large amount of sulfur dioxide generated in a combustion process of the petroleum coke powder reacts with the active calcium oxide under an oxidization high-temperature environment to generate calcium sulfate, so that clean combustion of the petroleum coke powder is realized; and generated calcium sulfate solids are uniformly scattered in a glass tank furnace and exert a clarification effect together with sulfur-containing raw materials in a glass batch, so that the use amount of mirabilite is reduced. According to the method, when combustion desulfurization of the petroleum coke is realized, the desulfurization product is directly used as a clarifying agent to partially replace the mirabilite for use, so that the content of the mirabilite of a glass component is reduced to 0.5-1.9%, and the total content of SOx in smoke of the melting furnace is directly reduced by 5%-15% when the smoke leaves the melting furnace. The emission amount of the SOx in a glass melting process is effectively controlled, desulfurization products can be efficiently utilized in situ, secondary pollution is avoided, and desulfurization cost is greatly reduced.

Description

Technical field [0001] The present invention relates to the technical field of building materials and environmental protection, in particular to a method for using petroleum coke to desulfurize and reduce the content of Glauber's salt in the glass industry. Background technique [0002] The glass industry is a high energy consumption and high pollution industry. The combustion of fuel in the glass melting furnace will produce a large amount of smoke. The type and content of pollutants in the smoke depends on the fuel used. The commonly used fuels in glass melting furnaces include heavy oil, natural gas, producer gas, and petroleum coke. Heavy oil has high calorific value, and the glass produced when used as fuel is of good quality, but resources are scarce and fuel costs are high; natural gas is a clean energy that can reduce sulfur dioxide and dust emissions by nearly 100%, and carbon dioxide emissions by 60% and nitrogen Oxygen compound emissions are 50%, but its calorific val...

AI Technical Summary

Problems solved by technology

However, petroleum coke has high sulfur content and serious combustion pollution. When 1kg of petroleum coke is burned, about 1000mg of sulfur dioxide is produced, which increases the economic investment of enterprises in reducing emissions. The promotion and application in the glass industry is restricted by environmental protection.

[0004] Sulfur dioxide is the main pollutant in glass production. There are many prevention and control methods at present, including high-altitude emission, fuel low-sulfurization, and exhaust gas desulfurization. Among them, the exhaust gas desulfurization technology is mature and the effect is good, but its process and equipment are relatively complicated.

Although there have been many reports on sulfur fixation and desulfurization in the combustion process, most of these technologies are aimed at coal, and a few are aimed at other fuels. For the desulfurization of petroleum coke, a new type of fuel, especially petroleum coke in glass melting The technology of combustion desulfurization in special equipment such as kiln has not been reported.

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