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Coupling method between making hydrogen and desulfurizing petroleum coking gas

A technology for petroleum coke and gasification reaction, which can be used in the petroleum industry, hydrogen production, catalytic conversion gas purification of impurities, etc., and can solve problems such as increasing the complexity of the process.

Inactive Publication Date: 2007-08-22
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two petroleum coke desulfurization methods include several processes such as preheating, preoxidation, metal carbonylation, hydrodesulfurization and petroleum coke gasification, and 4-5 reactors are required, which greatly increases the complexity of the process.

Method used

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  • Coupling method between making hydrogen and desulfurizing petroleum coking gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Take 5g of petroleum coke from a refinery, its elemental analysis shows C 89.08%, H 3.25%, N 1.86%, S 3.6%. Grind to below 100 mesh, mix with sodium carbonate particles at a ratio of 1:1, add to reactor 1, feed water vapor, flow rate is 200ml / min, reactor temperature is 750°C, and reaction time is 6 hours. After the outlet gas of the reactor is cooled, samples are taken, and the generated gas is analyzed. The composition of the gas is obtained by removing H 2 O and N 2 Calculate H 2 48%, CH 4 22%, CO 12%, CO 2 13%, C 2 h 4 3%, C 2 h 6 2%, H 2 S 5ppm and NH 3 100ppm. After the reaction, the solid product in the reactor 1 was first washed with water at 80°C for half an hour to remove most of the sodium carbonate, then acid-washed with hydrochloric acid at a temperature of 80°C for 1 hour, and then washed with water at 80°C for 2 hours to remove the hydrochloric acid. Finally, it was dried at 120° C. for 2 hours. The desulfurization rate of petroleum coke...

Embodiment 2

[0013] Substantially the same as Example 1, the difference is that the flow rate of feeding water vapor is 160ml / min, and simultaneously, the hydrogen gas of 20% of the flow rate of Example 1 is mixed, that is, the flow rate is 40ml / min. The desulfurization rate of petroleum coke is 72.5%.

Embodiment 3

[0015] Substantially the same as Example 1, the difference is that the flow rate of feeding steam is 120ml / min, and simultaneously, the hydrogen gas of 40% of the flow rate of Example 1 is mixed, that is, the flow rate is 80ml / min. The desulfurization rate of petroleum coke is 82.8%.

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Abstract

The present invention discloses method of coupling the hydrogen making reaction and desulfurizing reaction of gasifying petroleum coke. The present invention features that the mixture of petroleum coke and sodium carbonate or potassium carbonate is added into the reactor and gasified with the introduced water vapor to obtain synthesized gas with high hydrogen content, and of the synthesized gas, part is returned to the reactor through the water vapor inlet for hydrogenating and desulfurizing while the rest is further purified. After some time of gasification reaction, the rest solid product is exhausted for acid pickling, water washing and drying to obtain petroleum coke with low sulfur content.

Description

technical field [0001] The invention relates to the utilization of petroleum coke in smelting, electric power and chemical industries. The sulfur content in the petroleum coke is reduced by adopting an effective process method, so as to improve the product quality of the subsequent process section and reduce pollution. Background technique [0002] Due to environmental and health requirements, reducing sulfur content from the source has become the primary task of petroleum coke deep processing. High-temperature calcination is a common method for desulfurization of petroleum coke, but the high temperature exceeding 1000 °C not only requires high energy consumption, but also requires the use of expensive high-temperature resistant materials to provide a closed environment for the treatment of petroleum coke. In addition, the flue gas generated during calcination can neither be used as energy again, but must also be treated to prevent environmental pollution. In order to enhan...

Claims

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Application Information

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IPC IPC(8): C10L9/02C01B3/02C10K1/34
Inventor 张锁江郁亮高峰王号
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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