Method for removing sulfur in petroleum coke and desulfurizer thereof

A technology of petroleum coke and desulfurization agent, which is applied in the fields of metallurgy, chemical industry, environmental protection, and materials. It can solve the problems of increased voltage drop, high thermal brittleness of carbon anode, and ecological environmental pollution, and achieves mild desulfurization conditions, low raw material costs, and high-quality process. The effect of short process
CN101804977AInactive Publication Date: 2010-08-18CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2010-08-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for removing sulfur in petroleum coke and a desulfurizer thereof. The method adopts two types of mixed acid with a fixed ratio controlled as the desulfurizer, and comprises the following steps: placing fine petroleum coke with a high S content (the S content being 3-7 percent) in the mixed acid under the atmospheric pressure and the temperature of 0-60 DEG C, soaking the petroleum coke for reaction for a certain time, separating the petroleum coke and the soaking solution, washing and drying. The desulfurization percent of the obtained petroleum coke is 45-60 percent, the microstructure of the petroleum coke is not changed obviously, and the separated soaking solution of mixed acid can be repeatedly used when being mixed with the newly prepared liquid. The method has the advantages of low desulfurization cost, simple operation and significant desulfurization effect.
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Description

technical field

[0001] The invention relates to a chemical desulfurization method of petroleum coke and a desulfurizer thereof, and the method belongs to the technical fields of metallurgy, material, chemical industry and environmental protection. Background technique

[0002] Petroleum coke is one of the main by-products of petroleum deep processing, and it is also an important raw material for metallurgy, chemical industry and inorganic material preparation. According to the different sulfur content, petroleum coke is divided into high sulfur coke (S ≥ 3%) and low sulfur coke (S ≤ 3%). Among them, high-sulfur coke is mainly used as fuel, and low-sulfur coke is mainly used in the production of prebaked anodes and graphite electrodes for aluminum and steelmaking furnaces and other carbon products industries. In my country, because the S content in crude oil is generally low, the S content of the produced petroleum coke is correspondingly low. With the development of the ec...

Claims

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