Mercury vapor in a gas can easily be removed from the gas by contacting the gas with an adsorbent comprising an activated carbon having as supported thereon (1) one or more components included in one of three groups shown below and (2) one or more components included in the remaining two groups shown below. ______________________________________ Group Component______________________________________I sulfurII sulfate and nitrate of Al, V, Fe, Co, Ni, Cu, Zn or NH 4 III oxide of iodine, oxyacid correspond- ing to the oxide of iodine, salt of said oxyacid, and bromide and iodide of K, Na or NH 4 ______________________________________

Process for removal of mercury vapor and adsorbent therefor

A regenerable molecular sieve comprises 0.001-15% elemental silver or gold in or on zeolite A. The molecular sieve is capable of simultaneously removing mercury and water from a fluid. A method for impregenating zeolite A with elemental silver or gold comprising treating the zeolite A with a solution of a silver or gold salt of a carboxylic acid and heating the impregnated zeolite A at a temperature sufficient to decompose the salt is also provided. A method for simultaneously and repeatedly removing mercury and water from a hydrocarbon fluid by contacting the fluid with an effective amount of a molecular sieve comprising zeolite A and 0.001-15% elemental silver or gold and regenerating the zeolite A at elevated temperatures is also provided.

Simultaneous removal of mercury and water from fluids

A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.

Sorbents for the oxidation and removal of mercury

Mercury is removed from gases contaminated therewith by passing the gases in contact with activated carbon which has been impregnated with sulfuric acid. Carbon impregnation by soaking in a sulfuric acid solution and drying at preferred temperatures as well as mercury adsorption at preferred temperatures is also disclosed.

Method and article for removing mercury from gases contaminated therewith

There is disclosed an adsorption powder effective for capturing mercury from a high temperature, high moisture gas stream comprising: about 1-97% carbon; about 1-97% calcium hydroxide; about 1-97% cupric chloride impregnated carbon, and about 1-60% carbon impregnated with KI3. Additionally, a method of removing mercury from high temperature, high moisture gas streams is disclosed.

Adsorption powder for removing mercury from high temperature, high moisture gas streams

A method of purifying gases containing gaseous mercury. Mercury containing gas is passed through a mass of purifying material containing as an active constituent a material consisting of selenium, selenium sulphide or other selenium compounds or mixtures thereof.

Karl-Axel Melkersson

Papers

Method of purifying gases containing mercury compounds and elementary mercury

Method of removing mercury from sulfuric acid