1. Overview of acid mist purification tower equipment Acid mist purification tower is also known as acid mist treatment tower, acid mist absorption tower, mainly suitable for sulfuric acid, nitric acid, hydrofluoric acid, hydrochloric acid and other process operation process to produce acid and alkaline gas waste gas treatment environmental protection equipment, acid mist purification tower has high purification efficiency, compact structure, small footprint, corrosion resistance, good aging resistance, light weight, easy installation, transportation and maintenance management.
Second, the working principle of the acid mist purification tower.
Acid mist treatment tower is an indispensable equipment for acid mist exhaust gas purification, sulfuric acid, nitric acid, hydrofluoric acid, hydrochloric acid and other processes produce acid and alkaline gas in the process of operation, the exhaust gas enters the high-efficiency packing tower through the power of the induced draft fan, the upper end of the packing tower sprays out the absorption liquid evenly distributed on the packing, the exhaust gas and the absorption liquid are in full contact on the surface of the packing, due to the mechanical strength of the packing, corrosion resistance, high porosity, large surface characteristics, the exhaust gas and the absorption liquid have more contact area and reaction time on the surface of the filler. The purified gas will be saturated with water, and the water will be removed by the mist elimination device at the top of the tower and discharged directly into the atmosphere. The working principle of the acid mist treatment tower is to separate the pollutant substances in the gas and convert them into harmless substances to achieve the purpose of purifying the gas. It belongs to the differential contact counter-current type, the packing material in the tower body is the basic component of gas-liquid two-phase contact, after the gas outside the tower body enters the tower body, the gas enters the packing layer, there is a spray liquid from the top and the spray liquid in front of the packing layer, and forms a layer of liquid film on the packing, when the gas flows through the packing void, it contacts with the packing liquid film and carries out absorption or comprehensive reaction, the packing layer can provide a large enough surface area, and does not cause excessive resistance to the gas flow, and the gas after absorption or synthesis is collected by the mist eliminator, It is discharged outside the tower through the air outlet. The wastewater is recycled in the circulating pool of the acid mist purification tower after dosing, and the sediment is regularly cleaned and transported.
3. Introduction to the product technology of acid mist purification tower.
The acid mist exhaust gas in the production workshop is collected by the air hood, and then enters the lye scrubber through the pipeline, and the lye scrubber body is placed with two layers of packing layer and equipped with a two-stage water bath device, and sodium hydroxide (referred to as alkali) is added to the circulating pool to neutralize the acid mist in the exhaust gas.
The tower body is placed with two layers of packing layer and equipped with two high-pressure water bath devices, which are cleaned by the two-stage spray device, and then discharged through the water filtration device.
The acid mist purification tower is a kind of dust collector that makes the dust-containing gas and water fully bath, the acid mist purification tower has a simple structure, mainly composed of the main body, air intake pipe, exhaust pipe, nozzle, packing layer, dosing device, water source (pool) and water bath circulation system.
It is a kind of dust removal device that increases the moisture content in a specific container and changes the direction of air flow, reduces the air flow velocity, and makes it fully mixed with dust gas, so that the specific gravity of dust increases and adheres to neutralization, and water dust is separated from the air.
Fourth, the advantages of acid mist purification tower products:
The acid mist purification tower has simple process, low cost, low operating cost, easy installation and corrosion resistance;
Stable performance, high dust removal efficiency, good desulfurization effect;
Light weight, easy to install, transport and maintenance management;
It is especially suitable for water-soluble dust-containing gases;
5. Disadvantages of acid mist purification tower products:
Not suitable for dry material utilization;
If the circulating water is not treated well, it is easy to cause secondary pollution.
Sixth, the governance standards:
After the acid and alkali waste gas is treated, the pollutant emission reaches the second period standard of the local standard DB44 27-2001 "Air Pollutant Emission Limit" in Guangdong Province. Applicable ISO14000 international general standard. Acid and its compounds concentration discharge: 35mg m3.
7. Scope of application of acid mist purification tower:
The acid mist purification tower is mainly used in the enterprise units and laboratory acid mist purification equipment that produce acid and alkaline waste gas in the process of sulfuric acid, nitric acid, hydrofluoric acid, hydrochloric acid and other processes.