| abstract |
The utility model provides a two -stage flue gas sulfur trioxide removing device for gas cleaning installs in a SCR deNOx systems, include: set up in the one -level absorption section of SCR deNOx systems's an entry flue, including one -level absorbent injection apparatus, set up in SCR deNOx systems's an exhaust pass's second grade absorption section, including second grade absorbent injection apparatus. Spout into the one -level absorbent in the SCR upper reaches are to the flue gas, absorb the sulfur trioxide in the flue gas, reduce SCR denitration reactor entry sulfur trioxide concentration, spout in SCR denitration exhaust pass intos the second grade absorbent, carry out the desorption to remaining sulfur trioxide and the sulfur trioxide that passes through SCR denitration catalyst oxidation. Reduce ABS on the one hand and generate, the corruption of reduction afterbody equipment and heat -transfer surface, jam risk, on the other hand reduces to discharging harmful components in the atmosphere. |