Coal-fired boiler smoke efficient desulfurization and dedusting purification system for steam production

Abstract

The invention discloses a coal-fired boiler smoke efficient desulfurization and dedusting purification system for steam production. The system comprises a gravity sedimentation chamber, a filtering dedusting tower, a water bath dedusting tower, a desulfurization tower and a sedimentation filtering pond, wherein dust baffles are arranged on the inner wall of the gravity sedimentation chamber, and the dust baffles are arranged in multiple groups in a staggered mode; and a filtering cavity is formed inside the filtering dedusting tower, an installing plate is flexibly installed on the upper portion inside the filtering cavity, a dedusting cloth bag is arranged below the installing plate, the bottom end of the dedusting cloth bag communicates with the filtering cavity, and an activated carbonadsorption sleeve is arranged in the middle of the dedusting cloth bag. According to the system, through four-step dedusting and desulfurization treatment, the smoke purification effect is better; anda water source after water bath dedusting and slurry prepared from limestone powder after desulfurization are guided into the bottom of the sedimentation filtering pond, and sedimentation and filtration are performed. The system is used for recovery, brings convenience to resource saving and is environmentally friendly and sustainable.

Description

technical field [0001] The invention relates to the technical field of flue gas purification systems, in particular to an efficient desulfurization and dust removal purification system for flue gas of a coal-fired boiler used for steam production. Background technique [0002] During the use of the boiler, the pulverized coal is transported to the furnace through the powder feeder, and is fully burned after being mixed with the flue gas to emit heat. The furnace water in the water wall absorbs the heat emitted by the pulverized coal through radiation and conduction to form saturated steam, and then The steam is heated by the superheater to form superheated steam, which is supplied to external users, and in this process, a large amount of smoke will be generated; [0003] In the existing equipment, the principle of simple filtration is mostly used to remove dust, the purification effect is poor, and the exhaust gas contains serious particles, causing pollution. At the same ti...

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Problems solved by technology

[0003] In the existing equipment, the principle of simple filtration is mostly used to remove dust, the purification effect is poor, and the exhaust gas contains serious particles, causing pollution. At the same time, the existing equipment cannot be recycled, and it is difficult to recycle when using slurry to desulfurize the flue gas Utilization, waste of resources, therefore, the present invention proposes a coal-fired boiler flue gas efficient desulfurization and dust removal purification system for steam production to solve the problems existing in the prior art

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