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Method and system for desulfurization and dezincification of high-sulfur coal

A high-sulfur coal and denitrification technology, applied in separation methods, chemical instruments and methods, hydrogen sulfide, etc., can solve the problems of low field strength, clogging of sorting tanks, low gradients, etc., and achieve the effect of large economic benefits

Pending Publication Date: 2019-10-11
洪昆喨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0047] Unfortunately, the current HGMS generally has low field strength and low gradient, and the sorting tanks often get clogged, and the magnetic susceptibility of pyrite is 1 / 10–1 / 100 of that of ordinary metal minerals. Magnetic separators are used in the separation of low magnetic susceptibility coal / pyrite, while the cost of superconducting HGMS is too high to be industrialized

Method used

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  • Method and system for desulfurization and dezincification of high-sulfur coal

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Embodiment 1

[0070] Attached below Figure 1-3 Specific embodiment 1 is described further:

[0071] The system for desulfurization and denitrification of high-sulfur coal in Example 1 includes high redox electrocatalytic water equipment (1), hot water storage tank (2), heating reaction furnace (3), gas-liquid separator (4), Temperature and humidity controller (41), supergaseous electric element flow equipment (5), humidification and heating device (6), electrostatic collection device (61), chimney (7), conveyor belt (8), tailings collector (9 ), exhaust gas collection device (91), neutralization tank (10) and circulating water recovery treatment tank (11); among them, high redox electrocatalytic water equipment (1) is equipped with acidic electrocatalytic water outlet and alkaline electrocatalytic water outlet Outlet; acidic electrocatalytic water outlet of high redox electrocatalytic water equipment (1), hot water storage tank (2), heating reaction furnace (3), waste gas collection devic...

Embodiment 2

[0076] In Example 2, the method for desulfurization and denitrification in high-sulfur coal is to pass tap water into high redox electrocatalytic water equipment, and the pH value of tap water will be reduced to below 6 through the regulation of the equipment; Soak high-sulfur coal in electrocatalytic water, stir evenly, heat to 90-100°C and react for 0.5-1 hour; then during the heating process, a large amount of H in acidic electrocatalytic water + It reacts with sulfur and nitrogen in coal to produce hydrogen sulfide gas and ammonia gas, which can effectively remove sulfur and nitrogen in coal, thereby improving the quality of coal mines and meeting the requirements. The hydrogen sulfide gas generated above will be collected through the pipeline and enter the super gaseous electric flow equipment for further decomposition and treatment; due to the desulfurization and denitrification of high-sulfur coal, the total carbon content will increase, and the quality will also be impr...

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Abstract

The invention provides a method for desulfurization and dezincification of high-sulfur coal, including the steps of stirring and mixing the high-sulfur coal and acid electrocatalytic water, raising the temperature to 90 to 100 degrees centigrade, and performing a reaction for 0.5 to 1 hour, and obtaining clean coal by solid-liquid separation, wherein the pH of the acid electrocatalytic water is 1.6, and preferably 1-2. After the desulfurization and denitrification of the high-sulfur coal, the total carbon content increases, and the quality is correspondingly improved, and the level of clean coal is achieved, so that the originally unusable high-sulfur coal can be reusable.

Description

technical field [0001] The invention relates to a method and system for desulfurization and denitrification in high-sulfur coal. Background technique [0002] Coal is one of the most abundant fossil fuels on Earth and China's primary source of energy. However, the average sulfur content of China's coal resources is relatively high, and the high-sulfur coal reserves with total sulfur > 2% account for about 1 / 3 of the total coal reserves and about 1 / 6 of the mined coal. [0003] A large amount of SO is produced during the processing and utilization of high-sulfur coal 2 and nitrogen compounds are the main causes of air pollution and acid rain. China's air pollution is dominated by soot pollution, and SO 2 It will worsen the quality of atmospheric environment and aggravate the harm of acid rain, so the control of SO in flue gas 2 become an urgent task. [0004] With the enhancement of people's awareness of environmental protection, coal users have increasingly strict req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/00B01D53/32
CPCC10L9/02C02F1/461C02F2101/101C02F2101/20C02F2103/10C02F2103/16C10L9/00B01D53/32B01D2257/304B01D2257/302B01D2257/406C01B17/16C10L9/10C10L5/04C10L2290/06C10L2290/10C10L2290/08C10L2290/38C10L2290/544C02F1/4618C02F2001/46185B01D53/265C10L5/02B01D53/002
Inventor 洪昆喨
Owner 洪昆喨
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