A method for burning petrochemical waste liquid based on gas and oily liquid mixed fuel

Abstract

The invention discloses a method for incinerating petrochemical industry waste liquid based on mixed fuel of gas and oily liquid. The method comprises the steps of spraying the petrochemical industrywaste liquid into a combustion area of a spent caustic incinerator in an atomized manner, using fuel gas and oily liquid as combustion-supporting fuel, and carrying out combustion on the condition ofblowing in gas with oxygen while controlling the temperature of the combustion area to range from 800 DEG C to 1, 200 DEG C, wherein the material input of petrochemical industry waste liquid, and thematerial input of the fuel gas and the oily liquid simultaneously meet the requirements that the ratio of petrochemical industry waste liquid quantity per hour to spent caustic incinerator combustionarea hearth cross sectional area ranges from 0.7 to 1.0 t / h.m2, the ratio of fuel gas quantity per hour to spent caustic incinerator combustion area hearth cross sectional area ranges from 0.05 to 0.09 t / h.m2, and the ratio of oily liquid quantity per hour to spent caustic incinerator combustion area hearth cross sectional area ranges from 0.03 to 0.08 t / h.m2. With the method for incinerating petrochemical industry waste liquid based on mixed fuel of gas and oily liquid, it can be achieved that the combustion load is reasonable, the processing cost is reduced, damage caused by overhigh combustion load to a device is reduced, and it is beneficial for a waste liquid incineration technology to be promoted and applied to industries.

Description

technical field [0001] The invention relates to a method for treating petrochemical waste liquid, more specifically to a method for simultaneously using combustible gas and oily fuel to incinerate petrochemical waste liquid, belonging to the technical field of petrochemical industry. Background technique [0002] The petrochemical industry, such as the oxidation of cyclohexane to cyclohexanone, produces a large amount of high-concentration organic waste lye, making it up to standard treatment was once an environmental protection bottleneck for the industry's capacity expansion. In the late 1990s, Sinopec Baling Company successfully developed the waste alkali incineration technology based on the alkali recovery furnace method, which has the advantages of high COD removal rate and meets the national environmental emission standards after treatment, and has gradually become a waste alkali treatment process for cyclohexanone saponification. The mainstream technology has been put...

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Problems solved by technology

[0005] In view of the defects existing in the prior art, the purpose of the present invention is to provide a device that realizes a reasonable combustion load by adjusting gaseous fuel, liquid fuel and petrochemical waste liquid to a reasonable ratio, reduces treatment costs, and reduces the impact of excessive combustion load on the device. The method of incinerating waste liquid of petrochemical industry, which overcomes the technical defect of unreasonable ratio of gas and liquid fuel, broadens the adaptability of fuel, and solves the problem of environmental pollution and high processing cost of petrochemical waste alkali in the prior art question

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