Process for removing mercury from the exhaust gas in the combustion of solid fuels.

2004 
Process for removing mercury from the products of combustion of solid fuels, comprising: - Separation of an initiating charge of carbonaceous sorbent (28) in a contact load of the sorbent. . carbonaceous (28) and a retained load of carbonaceous sorbent (28), the contact load of the carbonaceous sorbent (28) a distribution of particle size of the carbonaceous sorbent (28) dso <15 microns and representing dso 50 % of the mass of particles within the full distribution of the contact load; in this case, the distribution of particle size of the carbonaceous sorbent (28) within the contact load is, after separation, the smaller the size distribution of the particles of the carbonaceous sorbent (28) within the initiating charge, prior to separation, and the distribution of particle size is also smaller than the size distribution of carbonaceous sorbent particles (28) within the trapped charge; - The contacting of the contact load of the carbonaceous sorbent (28) - at a contact point (66) - with the products of combustion of solid fuels, such that the carbonaceous sorbent (28) of the load contact can adsorb mercury; This method is characterized in that it further comprises the following: transport the carbonaceous sorbent (28) of the contact load to the contact point (66) and this so that, on average, at least 90 percent of the carbonaceous sorbent (28) of the load contract can be delivered to the place of contact (66) in less than thirty minutes after separation of carbonaceous sorbent (28) of the initiating charge in the carbonaceous sorbent (28 ) of the contact load and the carbonaceous sorbent (28) of the trapped charge, so that the carbonaceous sorbent m (28) of the contact load is contacted with the products of combustion of solid fuels in place contact (66), and this without any intermediate storage of the carbonaceous sorbent (28) after conversion of the carbonaceous sorbent (28) of the initiating charge in the carbonaceous sorbent (28) of the contact load and the carbonaceous sorbent (28) the trapped charge, whereby the distribution of average size dso particle contact load, which represents 50% of the particulate mass of the entire distribution in the contact load is not more than half distribution of the average particle size d5o of the initiating charge, which represents 50% of all particle mass distribution within the initiating charge.
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