Semi Dry Flue Gas Desulfurization

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Semi Dry Flue Gas Desulfurization

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  • Semi Dry Flue Gas Desulfurization - 4-2-2
Semi Dry Flue Gas Desulfurization
Model - 4-2-2
XIRI CFB-SEMI-DRY DESULFURZATION

WORKING PRINCIPLE
Flue gas from boiler air preheater by desulfurization tower bottom through ventilation device into the desulfurization tower, and then the flue gas by the acceleration of the bottom of the venturi tube for desulphurization into the circulating fluidized bed body, material in circulating fluidized bed, the gas-solid two-phase due to the effect of airflow, produce intense turbulent and mixing, full contact, in the process of rising, constantly forming poly group back down, and gathered group content and dissolution continually in the intense turbulent gas life, the gas-solid slip velocity between the slip up to single-particle velocity of dozens of times, pushing the bed up within the Ca/S ratio is as high as more than 87%. During the reaction process, the temperature of the flue gas is adjusted to about 70℃ by the atomized water injected. Qualified absorbent ( qualified fineness Ca(OH)2 ) dry powder is pneumatically transported into the absorption tower by the jet pump to conduct desulfurization chemical reaction with the flue gas in the tower. After the reaction, a large amount of gas-solid mixture is discharged from the top of the absorption tower. The gas-solid two-phase flow mechanism in the circulating fluidized bed greatly enhances the mass transfer and heat transfer between gas and solid and provides a fundamental guarantee for the realization of high desulfurization rate.
The cleaned dust and smoke is discharged laterally from the top of the desulfurization tower, and then into the efficient dust collector, and then discharged into the chimney through the boiler fan. The solid particles collected by the dust client pass through the recirculation system under the dust collector, return to the desulfurization tower and continue to participate in the reaction, and so on.
XIRI Light Energy Limited Corporation
4-2-2
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999999999 http://schema.org/InStock USD 2020-12-31
90out of 100based on 100user ratings
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XIRI Light Energy Limited Corporation
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4-2-1
none
999999999 http://schema.org/InStock USD 2020-12-31
90out of 100based on 100user ratings
XIRI CFB-SEMI-DRY DESULFURZATION TECHNOLOGY INTRODUCTION Semi-dry technology is a simple, low investment, high-performance desulfurization process, which refers to the use of water and desulfurizer in a sensible semi-wet state of desulfurizer slurry and flue gas to fully mix and react to achieve the desulfurization effect. During the drying process, the sulfur dioxide in the flue gas after reacts with sulfur dioxide to form a dry powder product. To improve desulfurization efficiency, lime powder digestion pulping is usually used as a desulfurization agent. Desulfurization slag is a free-flowing dry powder mixture without secondary pollution and can be further comprehensively utilized. This method is mainly applied to the flue gas desulfurization of power station boilers. The flue gas processing capacity of a single tower can be applied to boilers whose evaporation capacity is between 75t/h and 1025t/h, and the removal rate of sulfur dioxide can reach more than 99%. This method has the largest single tower processing capacity and the most superior comprehensive desulfurization benefits in dry and semi-dry desulfurization technologies.