Natec Resources, Inc.

Other

Natec Incorporated

Natec Mines, Ltd.

Richard G Hooper

Charles P Nicholas

SO.sub.x /NO.sub.x pollution control reagent composition comprising from 0.1 to 25% urea in intimate admixture with dry, finely divided Nahcolite, a naturally occurring form of sodium bicarbonate. The composition is used in a process of removing SO.sub.x /NO.sub.x from the flue gases of utility and industrial plants, incinerators and the like by dry injection into a flue gas duct a sufficient distance upstream of a spent reagent collection device to provide above about 0.25 seconds of residence time of the reagent composition in the flue gas duct at temperatures in the range of above about 200.degree. F. followed by collection, preferably in an electrostatic precipitator. The Nahcolite reacts with the SO.sub.2 to form sodium sulfate and also removes NO.sub.x in the form of NO. The urea prevents the conversion of NO to NO.sub.2 by the Nahcolite, and maintains the concentration of the NO.sub.2 in the exit flu gases below the 50 parts per million visibility threshold (depending on ambient conditions). The use of urea in the composition improves the SO.sub.x removal efficiency and utilization of the Nahcolite to near theoretical. The reagent composition and process can be employed in a wide variety of pollution control processes employing various types of standard sorbent contact equipment such as ESPs, baghouses, spray dryers, fluid beds, cyclones, scrubbers and co-current/counter current reactors.

SO.sub.x NO.sub.x pollution control composition

SO.sub.x /NO.sub.x pollution control process comprising injecting into flue gas from 1 to 50% carbon (preferably 5-15%) along with a dry, finely divided sodium sorbent, preferably sodium bicarbonate or Nahcolite, a naturally occurring form of sodium bicarbonate. The process removes both SO.sub.x and NO.sub.x from the flue gases of utility and industrial plants, incinerators and the like by dry injection into a flue gas duct a sufficient distance upstream of a particulate collection device, such as an ESP or baghouse, to collect spent reagent and additive. The sodium reagent reacts with the SO.sub.2 to form sodium sulfate and also removes NO.sub.x in the form to NO. The carbon additive reacts with NO.sub.2 to reduce the concentration of the NO.sub.2 in the exit flue gases to below the NO.sub.2 brown plume visibility threshold (about 30 ppm NO.sub.2, not corrected to 0% O.sub.2, depending on stack diameter and ambient conditions). The additive may be used alone or in conjunction with other adjuvants or additive such as urea or ammonia. The carbon must have a high effective surface area to be active is suppressing NO to NO.sub.2 conversion, and is preferably present in, on, in association with, or mixed with, an inert carrier, such as fly ash. Preferably, the 'C factor', which is the product of the fraction of carbon in the additive times the effective surface area of the carbon in the additive, is above 1.

Method for SO.sub.X /NO.sub.X pollution control

Baghouse SO.sub.x /NO.sub.x pollution control process comprising injecting from 1 to 25% urea or ammonia along with dry, finely divided sodium bicarbonate or Nahcolite, a naturally occurring form of sodium bicarbonate. The process removes both SO.sub.x and NO.sub.x from the flue gases of utility and industrial plants, incinerators and the like by dry injection into a flue gas duct a sufficient distance upstream of a baghouse to collect spent reagent and additive. The sodium reagent reacts with the SO.sub.2 to form sodium sulfate and also removes NO.sub.x in the form of NO. The urea or ammonia additive prevents the conversion of NO to NO.sub.2 by the sodium reagent, and reduces the concentration of the NO.sub.2 in the exit flue gases to below the NO.sub.2 brown plume visibility threshold (about 30 ppm NO.sub.2, not corrected to 0% O.sub.2, depending on ambient conditions). The additive may be used wet (sprayed into the flue gases in a concentrated water solution) or dry.

Method of baghouse brown plume pollution control

Method for baghouse brown plume pollution control

SO.sub.x /NO.sub.x pollution control reagent composition comprising from 0.1 to 25% urea in intimate admixture with dry, finely divided Nahcolite, a naturally occurring form of sodium bicarbonate. The composition is used in a process of removing SO.sub.x /NO.sub.x from the flue gases of utility and industrial plants, incinerators and the like by dry injection into a flue gas duct a sufficient distance upstream of a spent reagent collection device to provide above about 0.25 seconds of residence time of the reagent composition in the flue gas duct at temperatures in the range of above about 200.degree. F. followed by collection, preferably in an electrostatic precipitator. The Nahcolite reacts with the SO.sub.2 to form sodium sulfate and also removes NO.sub.x in the form of NO. The urea prevents the conversion of NO to NO.sub.2 by the Nahcolite, and maintains the concentration of the NO.sub.2 in the exit flu gases below the 50 parts per million visibility threshold (depending on ambient conditions). The user of urea in the composition improves the SO.sub.x removal efficiency and utilization of the Nahcolite to near theoretical. The reagent composition and process can be employed in a wide variety of pollution control processes employing various types of standard sorbent contact equipment such as ESPs, baghouses, spray dryers, fluid beds, cyclones, scrubbers and co-current/counter current reactors.

Method for ESP brown plume control

A snag-resistant fishing lure of simple three-piece construction has a body which normally conceals a hook until such time as a fish strikes and exposes the tip of the hook. The lure has an elongated rigid back member and a belly-like member fabricated of relatively thin flexible material and mounted below the back member to form a cavity for containing and concealing the tip of the hook. The bottom of the belly member has a slot which registers with the tip of the hook and through which the tip protrudes when a fish strikes the lure and compresses the belly against the back ahead of the tip. The tip lies within the slot and is angled downwardly and forwardly for cooperating with the rigid back to provide a self-setting action when struck by a fish. The lure is designed to float when stationary on the water; however, the leading ends of the back and belly members have an upwardly and rearwardly inclined surface designed to cause the lure to dive when pulled through the water.

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Littleton, CO, United States of America

Richard G Hooper