Spray desulfurization tower introduction
Alias is also called packing tower, scrubber tower, acid fog absorption tower, acid fog purification tower and other names. It works as follows: The industrial waste gas is introduced into the spray tower by the air pipe inlet, and the waste gas in the packing layer is fully in contact with the lye to produce a neutralization reaction. After purification, the industrial waste gas is dehydrated and defogged by the defogging plate of the defogging layer, and then discharged into the atmosphere by the fan. The absorbed liquid is pressurized by the water pump at the bottom of the tower, sprayed down the top of the tower, and then returned to the bottom of the tower for recycling. The purified exhaust gas is discharged until it meets the national standard discharge requirements.
The tower body is round, there are two kinds of horizontal and vertical flange segment connection, vertical spray tower because of its saving land area, so it is widely used in daily life. The whole structure of the spray tower is composed of liquid storage tank, tower body, air inlet section, spray layer, packing layer, air outlet cone cap, observation hole, etc. The pipe mouth has a spray port, a filler press plate, a bolt nozzle, a filler layer, a manhole, a filler hole, a feeding port, a filler support net plate, a circulation port, a liquid level port, a gas inlet, a manhole access hole, and a gas outlet.
Spray desulfurization tower structure
Spray desulfurization tower: using three layers of spray, two layers of fog removal: a layer of coarse fog removal, a layer of fine fog removal.
1, spray desulfurization single tower: carbon steel lined with granite, made into a split module structure or a whole, built-in swirl plate, baffle defogger, backwash, washing spray. More than 95% of SO2 is removed. Suitable for flue gas with low initial dust concentration.
2, spray desulfurization main and secondary tower: the main tower and single tower production process is the same, the role is mainly desulfurization. The auxiliary tower can be dehydrated to increase the service life of the flue, and the fan does not bring water.
3, spray desulfurization one tower: the use of carbon steel lined flake resin, Φ5.5m below the overall factory, Φ5.5m above the tower system, rust removal and lining flake resin are constructed on site. Advantages The overall equipment is light, easy to install and lift.
device parameter list
Desulfurization tower installation:
1. Install from bottom to top according to the general installation drawing.
2. When the equipment base is in place, pay attention to the orientation of the sewage outlet and the sewage ditch.
3. The simplified joint layer is paved with furan cement, and the upper simplified section is in place smoothly.
4. When installing the equipment at the entrance, please pay attention to the orientation of the equipment at the entrance to ensure that it is consistent with the fan outlet center.
5. When the nozzle section of the tower body is installed, the orientation of the nozzle is corresponding to the position of the water pipe on the pump.
6. The tower body is full and solid.
7. After the tower body is installed, the relevant platform and maintenance ladder outside the tower are welded and installed according to the drawing.
(Installation conditions must be met before entering the site, including foundation, pool, sewer, completion and maintenance period. Prepare the scaffolding and arrange the demolition. The scaffolding is usually steel pipe, and it is double row scaffold when it is built. Determine the crane according to the weight of the equipment and the installation position.
Spray tower operation specifications:
1. Before equipment operation, water should be injected into the circulating pool and slurry preparation tank to a reasonable degree to avoid corrosion of water pump and agitator bearings.
2, the fluid pipeline part of the valve is in the required operating state, timely check the fluid pipe leakage phenomenon; The slurry preparation tank is prepared for pulping at 15% concentration, and the main circulating pump clear water tank is added to PH9-12.
3. Open the main circulation pump when the equipment is running, and open the fan after a large amount of water is discharged from the sewage outlet at the bottom of the spray tower; Open the relevant electrical buttons according to the process, pay attention to the water level, ensure that the system operation requirements are met, and avoid the tower body water dry burning.
4, pay attention to the boiler negative pressure changes during operation, reasonable expense of fog removal backwashing, real-time observation of the circulation pool.
Shut down the fan first, and keep the water supply system of the desulfurization tower running to avoid damage to the tower body and the demister caused by high temperature smoke.