Residual oil desulfurization method as well as preparation method and production equipment of petroleum coke

Abstract

The invention provides a residual oil desulfurization method as well as a preparation method and production equipment of petroleum coke, and relates to the technical field of petroleum coking. The residual oil desulfurization method comprises the following steps: S1) providing residual oil as a reaction raw material, mixing the residual oil and a pretreatment agent and performing pretreatment on the residual oil, wherein the pretreatment agent comprises metal alkali and / or metal carbonate; and S2) putting a pretreatment mixture obtained in the step S1) into an electrostatic field, performing electrostatic desorption and desulfurization treatment and completing desulfurization of the residual oil to obtain the residual oil with low sulfur content. By the residual oil desulfurization method,the technical problems in the prior art that the process difficulty is high, the cost is high and the desulfurization effect is bad when the petroleum coke is desuflurized can be relieved; and desulfurization is conducted from the raw materials, so that the aims of reducing the desulfurization difficulty and improving the desulfurization effect are fulfilled.

Description

technical field [0001] The invention relates to the technical field of petroleum coking, in particular to a residual oil desulfurization method, a petroleum coke preparation method and production equipment. Background technique [0002] Petroleum coke is a kind of coke made from residual oil through delayed coking. At present, most of my country's petroleum coke products are high-sulfur petroleum coke (sulfur content is higher than 3%). The use of high-sulfur petroleum coke will not only cause corrosion of equipment, increase the production cost of enterprises, but also cause serious pollution to the environment. With the country's emphasis on environmental protection in recent years and the gradual upgrading of environmental protection levels, the demand for high-quality low-sulfur petroleum coke will increase in the future, so it is imperative to reduce the sulfur content in petroleum coke. [0003] At present, in order to obtain low-sulfur petroleum coke, high-sulfur pe...

AI Technical Summary

Problems solved by technology

The high-temperature calcination method is to calcine petroleum coke at a high temperature of 1600 ° C. The desulfurization rate exceeds 50%, but the energy consumption is large

The wet chemical oxidation method is to convert the water-insoluble organic sulfur in petroleum coke into water- or acid-soluble inorganic sulfur by chemical reagent oxidation to achieve the purpose of desulfurization, but this method will generate a large amount of waste water

Medium gas desulfurization refers to placing petroleum coke in the desulfurization medium gas at a constant temperature for a period of time, so that the sulfur in the petroleum coke interacts with the medium gas to achieve the purpose of desulfurization, but this method consumes a lot of energy and is dangerous

Solvent extraction method is to use organic solvent extraction method to extract the sulfur in petroleum coke into the solvent, so as to achieve the purpose of desulfurization, but the desulfurization rate of this method is low, and most of the organic solvents are toxic, flammable and explosive, and the cost is high

From the above analysis, it can be seen that using petroleum coke as a raw material to directly desulfurize petroleum coke is difficult and costly, and the effect is limited

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