CN2443246Y

CN2443246Y - Waste gas purifying tower

Info

Publication number: CN2443246Y
Application number: CN 00225648
Authority: CN
Inventors: 陈曙平
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-20
Filing date: 2000-09-20
Publication date: 2001-08-15
Anticipated expiration: 2010-09-20

Abstract

The utility model discloses a waste gas purifying tower. A whole tower body is divided into an upper, a middle and a lower layers, the top part of the tower body is connected with an air inlet pipe, and the inner parts of the upper and the middle layers in the tower body are provided with drain pipes, an atomizer composed of a perforated plate and a plurality of tapered nozzles and a rotational flow demister composed of a baffle vane with an elevation angle, a flow guiding sleeve and a liquid collecting tray in turn. Horn-shaped communicating pipes are arranged on interface positions between the upper and the middle layers and between the middle and the lower layers, an exhaust pipe is connected with the flow guiding sleeve of the rotational flow demister arranged at the lower layer of the tower body, and the bottoms of the layers in the tower body are provided with the drain pipes. The utility model having the advantages of high absorption efficiency, small size, and low energy consumption, is not easy to block, and is particularly suitable for treating sulfur oxides having high concentration and fluoric acidic waste gas.

Description

Tower for purifying waste gas

The utility model relates to a kind of Tower for purifying waste gas, particularly relates to the purifying column of wet-treating oxysulfide and fluorine-containing acid waste gas, dedusting, smoke elimination.

The waste gas of discharging in industrial production has become a most important factor of contaminated environment for removing the harmful substance in the industrial production waste gas, various forms of cleaning equipments have appearred, as the venturi absorption tower, APT absorption tower and CST turbogrid tower, these equipment generally are gas-liquid conversed operations, be subjected to the restriction of gas-liquid limit capacity, superficial linear velocity in a column is less, the mass transfer ability of unit effective volume is relatively poor, and the aperture of orifice plate is less, gas passes orifice plate makes absorption liquid that certain liquid layer thickness be arranged on orifice plate, has increased the interlayer resistance, forms crystallization easily and blocks orifice plate.On October 15th, 1997,2264617 " multifunctional wet dedusting smoke elimination sulphur purifying column " a kind of notification number disclosed on China's utility model patent communique is, by tower body, exhaust inlet pipe, downstream injection device, water recovery apparatus, thing gas separating device, gas director, spiral water jet and advance tubule, fog dispersal device and scum pipe and blast pipe and constitute.This purifying column adopts the relative absorbability that improves purifying column with the spiral water jet of downstream injection device, thing gas is set to be separated, gas director and demister block certain actual effect are also arranged preventing crystallization, but gas, liquid antikinesis, absorbability is still undesirable.

The purpose of this utility model is to provide a kind of absorption efficiency height, and volume is little, and operation energy consumption is low, is difficult for taking place the Tower for purifying waste gas of obstruction simultaneously.

In order to achieve the above object, technical solution of the present utility model is: tower body is last, in, following three layers, be connected to air inlet pipe at top of the upper layer, in the tower body in upper strata and middle level, be provided with liquid distributor from top to bottom successively, the atomising device of forming by the conical nozzle of orifice plate and a plurality of larger caliber and by establishing the baffling blade that arrange at the elevation angle, the water conservancy diversion cover, the vortex-flow and defrosting device that catch tray is formed, in upper strata and middle level, the interface location of middle level and lower floor is provided with the trumpet type cross over pipe, escape pipe is connected with the water conservancy diversion cover of the vortex-flow and defrosting device that is arranged on tower body lower floor, do not have the mist net that condenses in the vortex-flow and defrosting device of lower floor bottom, be equipped with discharging tube in the bottom of each layer.

After adopting such structure, gas and liquid flowing can be eliminated the resistance drop that liquid itself produces gas, flue dust in the tower and crystallization there is souring, make and be difficult in the tower blocking, the not restriction of liquid body limit capacity simultaneously, the mass transfer ability of the unit's of making effective volume obtains bigger raising, and the volume of handling identical tolerance tower reduces.Simultaneously, the liquid that overflows into bigger bore conical nozzle is subjected to the impact of the higher gas of speed and is carried into the ejection of conical nozzle bottom, gas is because of diffusion suddenly, just high turbulences is pulverized atomizing with liquid, makes atomizing layer produce great gas-liquid contact interface, atomizing effect strengthens, the mass transfer ability is increased greatly, and the circulation fluid of requirement is less, and energy consumption reduces; The atomizing layer attenuation is shortened diffuser, can reduce the unit height of tower, and the gas of fair speed drives liquid and washes away the conical nozzle wall, and the crystallization choking phenomenon is reduced greatly.Baffling blade with a fixed angle of altitude makes gas-liquid rotate along the water conservancy diversion cover, at centrifugal action, reaches separating effect preferably, and gas-liquid further improves the mass transfer ability along the rotation of tower wall.

Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.

Fig. 1 is the cutaway view of the utility model Tower for purifying waste gas.

Fig. 2 is the facial cutaway view of the amplification of the atomising device among Fig. 1.

Fig. 3 is the amplification view of the vortex-flow and defrosting device among Fig. 1.

Fig. 4 is the vertical view of Fig. 3.

Fig. 5 is along the cutaway view of A-A line among Fig. 4.

Fig. 6 is the cutaway view of the afflux dish among Fig. 3.

Tower for purifying waste gas as shown in Figure 1, whole tower body 1 is divided into upper, middle and lower-ranking, is connected to air inlet pipe 2 at the tower body top, and the upper strata of tower body 1 and middle level set gradually liquid distributor 3, atomising device 4 and the vortex-flow and defrosting device of arranging in length and breadth 5 from top to bottom.Evenly be furnished with the spray aperture on liquid distributor 3, atomising device is provided with the conical nozzle 12 of a plurality of even layouts as shown in Figure 2 on orifice plate 11, the end diameter of conical nozzle is 50-80mm, 13 °-14 ° of taperings, length are 2.5-3 times of end diameter, and orifice plate is fixed on the tower body wall.Vortex-flow and defrosting device such as Fig. 3, shown in Figure 4, constitute by being fixed on the cylinder baffling blade 13, the water conservancy diversion cover 15 on 14 and being positioned at the catch tray 16 that water conservancy diversion overlaps 15 bottoms, as Fig. 5 baffling blade 13, be provided with angle of elevation alpha, angle of elevation alpha is 30 °-34 °, has breach 17 on the catch tray 16 as shown in Figure 6.On the interface location of upper strata and middle level, middle level and lower floor, be provided with trumpet type cross over pipe 6, be connected to escape pipe 7 on the water conservancy diversion cover 14 of the vortex-flow and defrosting device 5 in lower floor's tower body, be provided with the mist net 9 that condenses below the vortex-flow and defrosting device 5 in lower floor's tower body, tower body 1 bottom is provided with base 10, is equipped with discharging tube 8 in the bottom of each layer tower body.

Claims

1, a kind of Tower for purifying waste gas, include tower body (1), air inlet pipe (2), escape pipe (7) and base (10), it is characterized in that: tower body (1) is divided into, in, following three layers, tower body (1) top is connected to air inlet pipe (2), in the tower body in upper strata and middle level, be provided with discharging tube (3) from top to bottom successively, the atomising device of forming by orifice plate (11) and a plurality of conical nozzle (12) (4), by the baffling blade (13) that has the elevation angle to arrange, the vortex-flow and defrosting device (5) that water conservancy diversion cover (15) and catch tray (16) are formed, in upper strata and middle level, the interface location of middle level and lower floor is provided with trumpet type cross over pipe (6), in lower floor's tower body, be provided with vortex-flow and defrosting device (5), escape pipe (7) links to each other with the water conservancy diversion cover (15) of the vortex-flow and defrosting device (5) of lower floor, below the vortex-flow and defrosting device (5) of lower floor, be provided with the mist net (9) that condenses, be equipped with discharging tube (8) in the bottom of each layer tower body.

2, according to the described Tower for purifying waste gas of claim 1, it is characterized in that: the end diameter 50-80mm of the conical nozzle (12) of atomising device (4), 13 °-14 ° of taperings, length is end diameter 2.5-3 times.

3, according to the described Tower for purifying waste gas of claim 1, it is characterized in that: the baffling blade in the vortex-flow and defrosting device (5) and the elevation angle of horizontal direction are 30 °-34 °.

4, according to the described Tower for purifying waste gas of claim 1, it is characterized in that: the atomising device that is provided with in upper strata and the middle level tower body can have the 1-3 layer.