Rotary kiln flue gas treating device capable of automatically controlling blowing rate of draught fan

Abstract

The invention discloses a rotary kiln flue gas treating device capable of automatically controlling the blowing rate of a draught fan, which relates to flue gas treating equipment for a rotary kiln used in titanium dioxide production. A main structure is that: a primary cyclone dust collector is connected with the rotary kiln and a secondary cyclone dust collector; the secondary cyclone dust collector is connected with a Venturi dust collector; the Venturi duct collector is connected with an acid mist washing tower; the acid mist washing tower is connected with a chimney through an exhaust pipe; an induced draught fan is arranged on the exhaust pipe and provided with a frequency converter; a sprayer and a washing sprayer on the Venturi dust collector and the acid mist washing tower are connected with water supply pipes respectively; the water supply pipes are connected with a water supply pump of a cooling and settling pond; water ponds at the bottoms of the Venturi dust collector and the acid mist washing tower are connected with water return pipes; and the water return pipes are connected with the cooling and settling pond. The rotary kiln flue gas treating device capable of automatically controlling the blowing rate of the draught fan captures and cools about 600 DEG C high temperature flue gas and fine dust which are generated in a metatitanic acid calcining process by the rotary kiln, and finally realizes the clean emission standard of tail gas and the recycling of captured dry ash.

Description

technical field [0001] The invention relates to titanium dioxide production equipment, in particular to flue gas treatment equipment of a rotary kiln used in titanium dioxide production. Background technique [0002] Calcination is one of the three most critical processes that determine the quality of titanium dioxide. In the production and calcination of titanium dioxide, a rotary kiln is required. The automatic control technology of the flue gas dust removal system of the rotary kiln can keep the dust removal gas path and the air flow of the rotary kiln reasonable and stable during the production process of the calcined titanium dioxide in the rotary kiln, reduce the loss of dust, increase the yield of the product, and finally achieve the cleanness of the tail gas. Emissions play an important role. [0003] After searching, there is no relevant literature report in China that the rotary kiln titanium dioxide flue gas treatment device adopts the same technology as the auto...

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Problems solved by technology

[0003] After searching, there is no relevant literature report in China that the rotary kiln titanium dioxide flue gas treatment device adopts the same technology as the automatic control fan air volume of this project

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