Abstract: The invention relates to a process for separating mercury out of flue gases from high-temperature plants, especially from power plants and waste incineration plants, in which reactants, for example in the form of bromine or alkali metal sulfides, are added to the flue gas beyond the firing operation in flow direction and then the flue gas is subjected to at least one dry cleaning operation for removal of the mercury and any excess reactants, wherein it is a feature of the process that the reactants and carbonaceous adsorbents in the form of activated carbons and/or activated cokes are introduced to the flue gas stream with separate metered addition, and the reactants are metered into the flue gas stream as a function of a preferably constantly measured mercury concentration.

Abstract: The invention relates to a process for separating mercury out of flue gases from high-temperature plants, especially from power plants and waste incineration plants, in which reactants, for example in the form of bromine or alkali metal sulfides, are added to the flue gas beyond the firing operation in flow direction and then the flue gas is subjected to at least one dry cleaning operation for removal of the mercury and any excess reactants, wherein it is a feature of the process that the reactants and carbonaceous adsorbents in the form of activated carbons and/or activated cokes are introduced to the flue gas stream with separate metered addition, and the reactants are metered into the flue gas stream as a function of a preferably constantly measured mercury concentration.

Abstract: The invention relates to a method for removing mercury from flue gases of high-temperature plants, in particular of power plants and waste incineration plants, in which method bromine and/or compounds containing bromine are added to the flue gas after firing in the flow direction. The flue gas is then subjected to at least one dry scrubbing process to remove the mercury and perhaps excessive bromine and/or excessive bromine compounds. The method according to the invention is characterized in that the bromine and/or the bromine compounds are brought in contact with the flue gas at a flue gas temperature ranging from 80° C. to 490° C., preferably from 80° C. to 250° C.

Abstract: The invention concerns a process for the production of carbonaceous adsorption agents doped with elementary sulfur, in which sulfur is mixed with the adsorption agent, the mixture is heated to a temperature of between 120° C. and 150° C. and the temperature is maintained over a period of about an hour. The process is distinguished in that heating of the mixture is effected under a controlled oxygen-bearing atmosphere. The invention further concerns a process for waste gas cleaning using carbonaceous absorption agents doped with elementary sulfur. Preferably brown coal coke is used as the adsorption agent.

Abstract: The invention concerns a carbonaceous sorbent in powder or grain form for the dry cleaning of waste gases from thermal processes. The sorbent includes carbon adsorbents from the group of activated carbon and/or brown coal cokes which are modified with sulfur and/or sulfur compounds. The sorbent is distinguished in that the specific surface area of the carbon adsorbents in m2/g in relation to the pore volume of the micropores in cm3/g is between 2400 and 2700.

Abstract: Sorbent for the dry cleaning of waste gases charged with mercury and process for the production thereof. The sorbent includes as an adsorptively acting constituent for example activated carbons or activated cokes which are mixed with sulfur in powder form at ambient temperature, under the action of atmospheric oxygen. The sorbent is distinguished by a given ratio in respect of the median values of the grain size of the adsorptively operative constituent to the sulfur.

Abstract: The invention concerns a process for the production of carbonaceous adsorption agents doped with elementary sulfur, in which sulfur is mixed with the adsorption agent, the mixture is heated to a temperature of between 120° C. and 150° C. and the temperature is maintained over a period of about an hour. The process is distinguished in that heating of the mixture is effected under a controlled oxygen-bearing atmosphere. The invention further concerns a process for waste gas cleaning using carbonaceous absorption agents doped with elementary sulfur. Preferably brown coal coke is used as the adsorption agent.

Abstract: Sorbent for the dry cleaning of waste gases charged with mercury and process for the production thereof. The sorbent includes as an adsorptively acting constituent for example activated carbons or activated cokes which are mixed with sulfur in powder form at ambient temperature, under the action of atmospheric oxygen. The sorbent is distinguished by a given ratio in respect of the median values of the grain size of the adsorptively operative constituent to the sulfur.

Abstract: The invention concerns a carbonaceous sorbent in powder or grain form for the dry cleaning of waste gases from thermal processes. The sorbent includes carbon adsorbents from the group of activated carbon and/or brown coal cokes which are modified with sulfur and/or sulfur compounds. The sorbent is distinguished in that the specific surface area of the carbon adsorbents in m2/g in relation to the pore volume of the micropores in cm3/g is between 2400 and 2700.