Wet treatment process and wet treatment system for PB (particle board) dry tail gas

Abstract

The invention discloses a wet treatment process and a wet treatment system for PB (particle board) dry tail gas. The wet treatment process is implemented by the aid of process regions including a first region which is a high-speed and high-pressure atomizing, spraying and cooling region, a second region which is a medium-temperature flue gas foam dust removal region, a third region which is a water drop cyclone and active dust removal cyclone cooling dust cleaning region, a fourth region which is an active cyclone cooling and air supplementing region, a fifth region which is a slag removal water purification treatment region and a sixth region which is a water circulating cooling region. The wet treatment process and the wet treatment system have the advantages that good dust removal and separation effects can be realized by the wet treatment process and the wet treatment system; water can be recycled after being filtered, and 'white dragon' phenomena can be obviously alleviated during emission; corresponding water vapor can be carried away by supplemented air, and accordingly the problems of incapability of treating 'production wastewater' and necessary increase of huge investment for constructing sewage treatment stations due to a large quantity of condensed water can be solved.

Description

technical field

[0001] The invention relates to the field of tail gas treatment for man-made board manufacturing, in particular to a wet treatment process and a treatment system for particle board (PB) drying tail gas. Background technique

[0002] At present, the exhaust emission of the wood-based panel production line is basically self-emission, and there is no control on the exhaust gas components. Although there is also an exhaust buffer box for continuous presses, the buffer box mainly passes through the bottom partition to reduce the wind speed and deposit dust. Although this kind of buffer box can deposit some larger particles of dust, most of the dust, especially a large number of tiny dust particles, is still discharged with the exhaust gas, and the buffer box cannot handle other substances in the exhaust gas, especially the man-made substances contained in the exhaust gas. The relatively high concentration of formaldehyde and odor emitted during the board producti...

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