Method for removing particulate pollutants from stack gases

Details Method for removing particulate pollutants from stack gases Method for removing particulate pollutants from stack gases

1976-01-26

1977-06-07

Spear, Jr., Frank A.

Gas separation

Means within gas stream for conducting concentrate to collector

55 92, 55 94, B01D 4718

Patent

active

040280713

ABSTRACT:
A pollution control system for reducing the presence of fine aerosol particles in stack gases from the manufacture of glass fiber wool-type products. After larger particles are removed from the forming fan gas, the gas is fed into a centrifugal fan and massive quantities of water are injected into the fan intake. The aerosol particles are agglomerated by impact with the airborne water droplets and the wet surfaces of the fan. The larger, coalesced or agglomerated particles are more readily susceptible to inertia-type separation from the air by either the action of the fan or in a later separation operation. It has been found that 1.5 or more gallons per minute (gpm) of injected water per thousand standard cubic feet per minute (scfm) of forming gas passing through each fan is effective to remove more than 40% of the fine, aerosol particles introduced into the fan and even larger amounts of water remove greater amounts of such particles. Further, the recirculating process water can be utilized, reducing or eliminating the consumption of fresh water and maintaining the normal process water system of the manufacturing operation.

REFERENCES:
patent: 2195707 (1940-04-01), Nutting
patent: 3133875 (1964-05-01), Hirschbeck et al.
patent: 3613333 (1971-10-01), Gardenier
patent: 3709670 (1973-01-01), Erikson

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