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Method for removing sulfur from petroleum cokes by manganese powder

A technology of petroleum coke and manganese powder, which is applied in the petroleum industry, carbon preparation/purification, solid fuel, etc. It can solve the problems of catalyst poisoning, increase the cost of flue gas treatment, unsafety, etc., and achieve the effect of simple operation

Active Publication Date: 2018-10-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Taking the use of anodes in aluminum electrolysis production in metallurgical production as an example, the following problems are brought about in the case of anodes pressed by high-sulfur petroleum coke: (1) increase the cost of flue gas treatment; (2) cause production equipment Severe corrosion; (3) Increased power consumption; (4) Increased anode consumption, shortening the anode replacement cycle
[0015] However, the above-mentioned patent application has the disadvantages that the catalyst used is expensive, the catalyst is easily poisoned during use, and the hydrogen source used in the desulfurization process is ammonia, hydrogen or water gas, which is unsafe and requires special safety measures and equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The method for removing sulfur in petroleum coke with manganese powder, its concrete steps are as follows:

[0033]First, crush 100g of petroleum coke with a sulfur content of 2.07wt% to a particle size of 0.15~0.25mm, then add metal manganese powder with a particle size of less than 200 meshes and mix evenly (the amount of metal manganese powder added is that the mass ratio of petroleum coke to manganese powder is 100: 5), heated to 700 ℃, passed ethanol vapor (the flow rate of ethanol vapor is 0.10m / s) for 80 minutes, and sieved after the reaction to obtain desulfurized petroleum coke (on the sieve) and sulfur-containing manganese powder particles (under the sieve).

[0034] The sulfur content in the above-mentioned desulfurized petroleum coke is 1.12 wt %.

Embodiment 2

[0036] The method for removing sulfur in petroleum coke with manganese powder, its concrete steps are as follows:

[0037] First, crush 100g of petroleum coke with a sulfur content of 4.72wt% to a particle size of 0.113~0.15mm, and then add metal manganese powder with a particle size of less than 200 mesh and mix evenly (the amount of metal manganese powder added is that the mass ratio of petroleum coke to manganese powder is 100: 25), heated to 500 ℃, and the mixed gas formed by ethanol vapor and air (the flow rate of the mixed gas is 0.8m / s, the volume concentration of ethanol in the mixed gas formed by ethanol vapor and air is 20%, and the rest is air) to react 120min, after the reaction, sieve to obtain desulfurized petroleum coke (on the sieve) and sulfur-containing manganese powder particles (under the sieve).

[0038] The sulfur content in the above-mentioned desulfurized petroleum coke is 1.22 wt %.

Embodiment 3

[0040] The method for removing sulfur in petroleum coke with manganese powder, its concrete steps are as follows:

[0041] First, crush 100g of petroleum coke with a sulfur content of 3.16wt% to a particle size of 0.096~0.113mm, then add metal manganese powder with a particle size of less than 200 mesh and mix it evenly (the amount of metal manganese powder added is that the mass ratio of petroleum coke to manganese powder is 100: 20), heated to 700°C, and the mixed gas formed by ethanol vapor and air (the flow rate of the mixed gas is 0.7m / s, the volume concentration of ethanol in the mixed gas formed by ethanol vapor and air is 98%, and the rest is air) to react 80min, after the reaction, sieve to obtain desulfurized petroleum coke (on the sieve) and sulfur-containing manganese powder particles (under the sieve).

[0042] The sulfur content in the above desulfurized petroleum coke is 1.18 wt %.

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Abstract

The invention relates to a method for removing sulfur from petroleum cokes by manganese powder, and belongs to the technical field of metallurgy, carbon materials and metallurgy energy conservation and emission reduction. The method includes the following steps: firstly, crushing the petroleum cokes containing 2.0 wt%-6.4 wt% of sulfur to a particle size of 0.080-0.25 millimetre, adding the manganese powder with the particle size below 200 mesh into the crushed petroleum cokes to be mixed evenly, heating the mixture to 500-900 DEG C, feeding ethanol vapor or mixed gas formed by ethanol vapor and air for reaction for 40-120 minutes, and obtaining desulphurized petroleum cokes and manganese powder particles containing sulfur by screening after the reaction. The reaction is carried out underanoxic conditions, and does not cause burning loss to the petroleum cokes.

Description

technical field [0001] The invention relates to a method for removing sulfur in petroleum coke by using manganese powder, and belongs to the technical fields of metallurgy, carbon materials and metallurgy energy saving and emission reduction. Background technique [0002] Petroleum coke is a kind of coke made from residual oil through delayed coking. Its main element is carbon, accounting for more than 80wt%. It is easy to graphitize after high-temperature calcination. Due to its unique physical, chemical and mechanical properties, it is widely used in metallurgy, carbon materials and metallurgical energy saving and emission reduction. Petroleum coke is often used as an electrode material and a reducing agent component in the metallurgical industry. According to the level of sulfur content, petroleum coke can be divided into high sulfur coke (the mass content of sulfur is higher than 4%), medium sulfur coke (the sulfur content is 2% to 4%) and low sulfur coke (the sulfur co...

Claims

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Application Information

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IPC IPC(8): C10L9/02C01B32/05
CPCC10L9/02C01B32/05
Inventor 朱云郭淑仙李宁
Owner KUNMING UNIV OF SCI & TECH
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