Calgon Corporation

Other

Merck + Co., Inc.

Rabindra K Sinha

Norman J Wagner

Charles K Polinsky

Ronald S Joyce

John Emery Urbanic

Bruce C Johnson

S David Cifrulak

Stephen D Cifrulak, Sr

The invention provides compositions to remove mercury and other pollutants from a fluid stream,, particularly flue gases containing them. The composition is a mixture consisting of (a) polyhydroxy compound selected essentially from the group consisting of mono, di, poly saccharides and mixture thereof; (b) a catalyst selected essentially from the group of ammonium compounds, sulfuric acid, phosphoric acid and salts, zinc chloride, and mixture thereof; and (c) specificity producing compound selected from the group of elemental sulfur, sullides and polysulfides of ammonia and alkalies, compounds and metals of copper, silver, tin, gold, and mixture thereof. The polyhydroxy compound in (a) above, either alone or in conjunction with the third group (c), above is also shown effective to remove mercury and other pollutants from fluid streams. The composition can be liquid or dry powder. Methods are provided for applying the formulation.

Chemical formulations for the removal of mercury and other pollutants present in fluid streams

The present invention provides compositions including a salt selected from the group consisting essentially of sodium nitrate, sodium nitrite, ammonium nitrate, lithium nitrate, barium nitrate, cerium nitrate, and mixtures thereof, as flue gas conditioning formulations for use in controlling particulates, hazardous substances, NO.sub.x, and SO.sub.x. For the purpose of obtaining greater yields of particulate and hazardous substance removal, the compositions may further include a polyhydroxy compound, preferably selected from the group consisting essentially of sucrose, fructose, glucose, glycerol, and mixtures thereof. Methods are also provided for adding these compositions to the flue gas stream to control particulate, hazardous substance, NO.sub.x, and SO.sub.x emissions.

Flue gas conditioning for the removal of particulates, hazardous

Methods for minimizing deposits in boilers, furnaces, incinerators or other systems firing tire derived fuels when burned in combination with other fuels which may include fuel oils are disclosed. These methods include treating the fuels so as to raise the magnesium content of the fuels or their combustion products comprising adding to the fuels one or more magnesium-containing compounds. The methods of treating tire derived fuels when they are burned with other fuels not including fuel oils includes adding to the fuel a suspension of magnesium hydroxide in water. The method of treating tire derived fuels when they are burned in combination with other fuels including fuel oils involves adding to the fuel a compound containing a magnesium-based slag mitigation component and a heavy metal combustion catalyst. In a preferred method of treating tire derived fuels when burned in combination with fuel oil, both the suspension of magnesium hydroxide in water and the solution containing the slag mitigation component and combustion catalyst are used to treat the fuels.

Method of minimizing deposits when firing tire derived fuels

A method for increasing the porosity of fly ash comprising adding an effective amount of a polymer/nitrate composition to fly ash produced from the combustion of fuels such as coal.

Use of polymer/nitrate compositions to increase the porosity of fly ash

A stable aqueous suspension of a mixture of magnesium hydroxide and copper oxychloride, together with a suspending agent, is used to reduce deposits in kilns or furnaces used to make iron ore agglomerates, known as pellets, during a calcination process in which iron ore fines mixed with fluxing materials having a phosphate content of less than 1% by weight of the total flux and iron ore weight, are heated to from about 900.degree. to about 1400.degree. C. in order to create the hardened iron ore pellets, called flux pellets, one of the chief raw materials in steel making.

Controlling deposits in the calcination of fluxed iron ore pellets

A process for separating porous components from non-porous components of a mixture of granular materials comprising the steps of:

Process for separating porous materials from less porous materials

The instant invention is directed to a method of inhibiting and dispersing calcium oxide deposit formation in coal-fired lime kilns, comprising burning the coal in the presence of from 1 to 2 pounds/ton of coal of a blend of 80 to 95%, by weight, magnesium oxide and 5 to 20%, by weight, copperoxychloride.

Blends of magnesium oxide and copperoxychloride as calcium oxide deposit

The instant invention is directed to a process for lowering the electrical resistivity of fly ash comprising adding a cationic or anionic polymer to the fly ash.

Use of anionic or cationic polymers to lower the electrical resistivity

Gas streams contaminated with acid and acid precursor gases and vapors are purified by contacting the gas streams with activated carbon impregnated with sodium hydroxide.

Removal of acidica contaminants from gas streams by caustic impregnated

Removal of acidic contaminants from gas streams by caustic impregnated

A carbon supported catalyst used for carbon monoxide oxidation is chemically modified by treating the activated carbon support with an oxidizing agent and/or a hydrophobic compound prior to impregnation with the catalyst mixture. The thus treated catalytic carbon is capable of oxidizing carbon monoxide in an air stream containing sulfur dioxide over an extended period of time.

Catalytic carbon for oxidation of carbon monoxide in the presence of

A novel impregnated activated carbon, containing from about 1.0 percent to about 15.0 percent by weight of MgO, has been found to be useful in a method of decolorizing a crude vegetable oil or a degummed vegetable oil, and removing organic acids therefrom, as well as in a process for making a refined edible vegetable oil wherein a crude vegetable oil is degummed, passed through the impregnated activated carbon, and subjected to steam distillation at reduced pressure. A novel method of preparing the MgO impregnated activated carbon has also been discovered.

MgO Impregnated activated carbon and its use in an improved vegetable

Method of preparing magnesium oxide impregnated activated carbon

An improved process for the removal of malodorous compounds, especially sulfur-containing compounds, for example H.sub.2 S and methyl mercaptan, from gas streams containing oxygen in which a bed of activated carbon treated with NaOH and moisture is used to remove said compounds. The treatment, which may also be combined with regeneration of the activated carbon, is effected, typically, by applying to the carbon one bed volume of dilute (4-6%) NaOH solution, draining and drying with 50- 100% R.H. air.

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Coraopolis, PA, United States of America

Rabindra K Sinha