JP2018009785A5 - - Google Patents

Claims (13)

A method for burning coal in a furnace to reduce the release of NOx and at least one SOx and mercury comprising burning refined coal in the furnace, the refined coal being sub-bituminous or lignite, 0 A mixture of 0.001 to 1.0 wt% bromine compound and 0.1 to 10 wt% powder adsorbent, the powder adsorbent comprising cement kiln dust (CKD), and further the powder adsorption comprising a _{K 2} O of less than Na ₂ O and 0.1 wt% of less than 0.1% by weight based on the weight of the agent. Purification charcoal, comprising a 0.002 to 1.0 wt% of a bromine compound and from 0.1 to 2.0% by weight of the powder sorbent, A method according to claim 1.   The method of claim 1, wherein the powder adsorbent comprises CKD and one or more of ground CKD, kiln feed, conversion cement, dry clinker, storage CKD, and limestone.   The method of claim 1, wherein the powder adsorbent comprises CKD and ground CKD.   The method of claim 1, wherein the powder adsorbent comprises CKD and aluminosilicate clay.   The method of claim 1, wherein the powder adsorbent comprises CKD and kaolin.   The method of claim 1, wherein the powder adsorbent comprises less than 0.5 wt% chlorine. A method of generating energy by burning mercury containing subbituminous coal in a furnace of a coal combustion facility;
Administering a first adsorbent composition to the coal;
Transporting coal containing the administered first adsorbent to the furnace;
Adding a second adsorbent to the furnace simultaneously with transporting the coal; and burning the coal in the furnace in the presence of the first and second adsorbents to generate thermal energy and ash. And
Here, the first adsorbent comprises a bromine compound, and the second adsorbent is cement kiln dust, less than 0.1 % Na ₂ O, less than 0.1 % K ₂ O, and 0.5%. comprises less than chlorine, wherein the ratio Ri weight der relative to the total weight of the second adsorbent, as compared with coal burning that does not use the first and second adsorbent, coal burning facility The method of reducing mercury emissions from a coal combustion facility by more than 40% and reducing NOx emissions from coal combustion facilities by more than 20% compared to coal combustion without using the first and second adsorbents . The method of claim 8 , wherein the first adsorbent is an aqueous calcium bromide solution. 9. A method according to claim 8 , comprising adding calcium bromide in a proportion of 0.001 to 0.5%, based on the amount of coal burned. The method of claim 8 , wherein the second adsorbent comprises CKD and ground CKD. 9. The method of claim 8 , wherein the second adsorbent comprises one or more of ground CKD, kiln feed, conversion cement, dry clinker, storage CKD, and limestone. 9. The method of claim 8 , comprising adding the second adsorbent in a proportion of 0.1 to 10% by weight, based on the coal weight consumed.