The combined wet desulfurization and dust collector is a wet desulfurization and dust collector that combines dry dust removal and wet desulfurization and dust removal. It adopts an optimized design scheme and adopts a multi-stage dust removal method, which not only improves the dust removal efficiency but also reduces the footprint.

Working principle of combined wet desulfurization and dust collector:

Dust laden flue gas or sulfides enter the inlet of the combined wet flue gas desulfurization and dust collector. After the lower dry dust collector removes more than 90% of the coarse dust in the flue gas, the flue gas enters the flue gas diffusion chamber in the upper wet flue gas desulfurization and dust collector through a spiral straight pipe. The gas flow containing dust and sulfides directly impacts the liquid surface, causing a large number of vortices and water splashes to collide, and larger dust particles fall into the bottom water of the pool. The flue gas and tiny dust particles enter the droplet separation chamber, circulate and wash with the flue gas through the mixing spray device, fully contact and mix with the flue gas, diffuse and drift, and return to the flue gas vortex chamber. Under the condition of sharp turning to high airflow, they enter the air-water mist chamber, where the flue dust and sulfide are trapped and separated again. Under the negative pressure of the induced draft fan, the flue gas carries some water, gas and liquid droplets into the smoke collecting chamber through the air-water separation device, and the purified flue gas is discharged from the smoke outlet. At the same time, sulfides in the flue gas undergo a cyclic washing reaction with a dosing balance tank containing lime milk or alkali, generating calcium sulfite crystals that sink into the water with mortar, and are discharged into the sedimentation tank through a discharge valve.

Performance characteristics of combined wet desulfurization and dust collector:

1. Adopting various dust removal mechanisms such as dry cyclone separation, inertial settling, and wet spray dust removal to remove and desulfurize dusty flue gas;

2. Reasonably combine the dry dust removal part with the wet dust removal part, adopt optimized design, and adopt a multi-stage dust removal method with one machine to improve dust removal efficiency and reduce footprint;

3. Internally, unique anti-corrosion and technology are adopted, greatly improving the service life of the product;

4. The dry dust removal part of the dust collector separates the dust in the boiler's dusty flue gas, so that the dust content in the flue gas entering the wet dust removal process will be very small. This can save water and avoid secondary pollution from drainage; In addition, sufficient lime milk and alkaline water can be supplied to ensure the desulfurization effect of flue gas. The spray water can be recycled, and the size of the sedimentation tank can be relatively small. The dredging interval is also relatively long, reducing the labor intensity of employees and mitigating the secondary pollution of circulating water;

5. The designed gas water separation device is coated with anti-corrosion coating on the inner surfaces of the wet desulfurizer cylinder and the inlet and outlet flues;

6. Due to the low amount of dust in the circulating water and the small amount of sludge settling in the sedimentation tank, the operating cycle is longer and the cleaning cycle is also longer.

Application industries of combined wet desulfurization and dust removal equipment:

Dust removal for refractory material processing, steelmaking electric furnace flue gas, abrasive smelting, calcium carbide furnace production, blast furnace gas purification, coal powder preparation, asphalt concrete production, carbon black production, building materials processing, chemical industry, electrolytic aluminum processing, and aluminum zinc smelting processes.