The State of the Art in Gas Cleaning for the Fertilizer Industry

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Courtesy of Kimre Inc.

The fertilizer industry has earned recognition for having contributed directly to increase world grain yields in the past century. Based on the conservative estimate of the world population growth, total fertilizer use in the future is expected to grow more than 200 million tons from the current level of 165 million tons. In U.S.A. and other countries the industries have always been challenged to meet the current and future air quality emissions standards set by local/state/federal governments under the Clean Air Acts and other regulations.

Accordingly, less polluting technologies emerged by way of reducing SOx and NOx in exhaust air from the Sulfuric and
Nitric/Ammonia/Phosphate/Nitro-Phosphate plants in order to minimize “acid rain” problems in the atmosphere.

Fluoride emissions have similarly been lower from phosphoric acid /Di and Mono-Ammonium Phosphate, Granular Triple or Single Super Phosphate plants at or below 0.02 lbs. F per ton P2 O5 input by scrubber technology and control mechanisms so far. Further advances in technology for developing ladder-like structured mono-filament media as a packing material for absorption and mist elimination purposes have reduced its level from 0.02 to 0.013 lbs. F- or less per ton in the industry at present.

This paper will discuss about gas cleaning equipment in general and advances in cross/semi-cross flow scrubber technology with KON-TANE® / B-GON® / AEROSEP® in particular, as a packing media for prevention of air pollution in the fertilizer industry.

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