Semi-dry desulfurization device

Abstract

The invention provides a semi-dry desulfurization device and belongs to the technical field of environmental engineering. The semi-dry desulfurization device comprises a flue gas inlet, a dense phase chamber, diversion plates, chain type stirrers, a circulation fluidization chamber, a partition plate, ash buckets and a flue gas outlet; a desulfurization tower is designed in an inverted U shape; the flue gas inlet is formed in the upper part of the outer side of the whole device; a feeding hole is formed in the top of the device; the partition plate divides the desulfurization tower into the dense phase chamber and the circulation fluidization chamber; the diversion plates are arranged in each of the dense phase chamber and the circulation fluidization chamber and fixed on the tower wall and the partition plate respectively; and dust-containing flue gas forms a swirl flow under the action of the diversion plates after entering the dense phase chamber and the circulation fluidization chamber, generation of the swirl flow enables contact of the flue gas and circulation dust to be more sufficient on one hand and enables finer-particle circulation dust in the flue gas to agglomerate into larger particles to settle to the tower bottom on the other hand, and thus the dust removal load of a dust remover is lowered. By adopting the semi-dry desulfurization device, the desulfurization reaction time is prolonged, the utilization ratio of the circulation dust is increased, the load of the dust remover is lowered, the service life of the dust remover is prolonged, and the running cost is lowered.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a semi-dry desulfurization device. Background technique [0002] While my country's economy is developing rapidly, the control of pollutants is urgent. Smog has been a pain in the heart of every Chinese person in recent years, especially the people of Tianjin, Beijing and Hebei. Sulfur dioxide, nitrogen oxides and inhalable particulate matter are the main components of smog. Suspended particles of different particle sizes in smog have different effects on human health. The finer the particles, the greater the chance of being inhaled, the stronger the activity in the human body, and the greater the harm to the human body. Due to the frequent occurrence of smog weather, the industry standards and national standards for air pollution control are gradually improving. Especially in recent years, the concept of near-zero emission has been proposed. Most enterprises ...

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a semi-dry desulfurization device in order to solve the problems of the existing semi-dry desulfurization equipment, such as large dust collector load and relatively low utilization rate of circulating ash, in which deflectors are added in the desulfurization tower according to the fluent simulation results, changing the The original flue gas flow path in the absorption tower increases the residence time and improves the utilization rate of recycled ash

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