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Direct desulfurization method of high-sulfur coal by microwave radiation

A technology of microwave radiation and coal, applied in the field of coal desulfurization, can solve the problems of large coal consumption, high sulfur content and coal quality, and achieve the effects of low loss rate, low equipment investment and easy control

Inactive Publication Date: 2015-02-04
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can solve the current situation that the coal has high sulfur content and the existing desulfurization process cannot meet the needs of coal quality, and my country's coal consumption is large, so it has a wide application prospect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Accurately weigh 30g of Shanxi high-sulfur coal in a 200ml quartz reactor, fix the quartz reactor in the microwave radiation reaction furnace, pass air with a flow rate of 100ml / min through the quartz air duct, and turn on the power switch after the air flow is stable. Set the relevant process parameters of microwave treatment, the specific parameter conditions are as follows:

[0023] The microwave radiation frequency is 2.45GHz, the microwave power is 600W, the microwave irradiation time is 10min, the radiation temperature is 120°C, the coal seam thickness is 6cm (accounting for 1 / 5 of the total volume of the quartz reactor), and the coal particle size is 2cm.

[0024] Turn on the microwave radiation reaction furnace switch (i.e. start microwave radiation) to carry out microwave radiation desulfurization. After the reaction is over, cool to room temperature, collect the microwave-treated coal and carry out element analysis on the German FLASH-2000 organic element analy...

Embodiment 2

[0027] Accurately weigh 50g of Shanxi high-sulfur coal in a 200ml quartz reactor, fix the quartz reactor in the microwave radiation reaction furnace, pass air with a flow rate of 50ml / min through the quartz air duct, and turn on the power switch after the air flow is stable. Set the relevant process parameters of microwave treatment, the specific parameter conditions are as follows:

[0028] The microwave radiation frequency is 2.45GHz, the microwave power is 800W, the microwave irradiation time is 6min, the radiation temperature is 150°C, the coal seam thickness is 3cm (3 / 5 of the total volume of the quartz reactor), and the coal particle size is 0.5cm.

[0029] Turn on the microwave radiation reaction furnace switch (i.e. start microwave radiation) to carry out microwave radiation desulfurization. After the reaction is over, cool to room temperature, collect the microwave-treated coal and carry out element analysis on the German FLASH-2000 organic element analyzer. Helium wa...

Embodiment 3

[0032] Accurately weigh 50g of Shanxi high-sulfur coal in a 200ml quartz reactor, fix the quartz reactor in the microwave radiation reaction furnace, pass in no carrier gas, turn on the power switch, and set the relevant process parameters for microwave treatment. The specific parameter conditions are as follows :

[0033] The microwave radiation frequency is 2.45GHz, the microwave power is 800W, the microwave irradiation time is 8min, the radiation temperature is 180°C, the coal seam thickness is 4cm (accounting for 3 / 5 of the total volume of the quartz reactor), and the coal particle size is 3cm (unground raw coal).

[0034] Turn on the microwave radiation reaction furnace switch (i.e. start microwave radiation) to carry out microwave radiation desulfurization. After the reaction is over, cool to room temperature, collect the microwave-treated coal and carry out element analysis on the German FLASH-2000 organic element analyzer. Helium was used as the carrier gas, and the fu...

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Abstract

The invention discloses a direct desulfurization method of high-sulfur coal by microwave radiation, which comprises the following steps: 1) putting high-sulfur coal in a reactor, and putting the reactor in a microwave radiation reaction furnace; and 2) introducing carrier gas, switching on the microwave radiation reaction furnace to perform microwave radiation on the high-sulfur coal after the gas flow is stable, and switching off the microwave radiation reaction furnace. The desulfurization percent is 50% or so, the microwave-radiation high-sulfur coal desulfurization process has small influence on the major structure of coal, the heating amount, binding property, intrinsic structure characteristic, crystallinity, stability, thermal chemical properties and the like of the coal are kept stable, and the loss rate of coal is very low; and the microwave-radiation high-sulfur coal direct desulfurization method has the advantages of short production cycle, low equipment investment, high reaction speed, low energy consumption and high controllability, and can implement continuous production.

Description

technical field [0001] The invention relates to a method for coal desulfurization, in particular to a method for direct desulfurization of high-sulfur coal by microwave radiation. Background technique [0002] Coal accounts for about 70% of my country's energy consumption structure, which is an important guarantee for sustained and rapid economic development. However, the sulfur in coal produces SO in the process of combustion and coking 2 , causing serious air pollution and causing a series of environmental problems. Therefore, coal desulfurization is of great significance to improving the utilization efficiency of coal resources and environmental protection. Sulfur in coal can be divided into inorganic sulfur and organic sulfur according to the state of existence. Among them, inorganic sulfur mainly includes pyrite, marcasite, barite, gypsum compounds and some iron-containing sulfates, and organic sulfur mainly consists of thiophenes. Aromatic compounds, mercaptans, thi...

Claims

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Application Information

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IPC IPC(8): C10L9/00
Inventor 孙予罕李晋平孔令照尉慰奇唐志永肖亚宁王东飞韩强杨万海田晋
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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