The invention discloses a method for adjusting boiler load and
flue gas temperature, which comprises a
system for adjusting boiler load and
flue gas temperature, the
system comprises
coal economizers, a
water supply header
pipe, a
branch pipe I, a
branch pipe II, a
branch pipe III, a branch pipe IV, a
flue and a boiler
barrel, the
coal economizers comprise a high-temperature
coal economizer and a low-temperature coal
economizer which are sequentially arranged in the flue, the branch pipe I is arranged at one end of the
economizer, the branch pipe II and the branch pipe III are respectively arranged at the other end of the economizer, the branch pipe IV is connected with an outlet header of the low-temperature economizer and the branch pipe III, the
water supply header pipe is respectively connected with the boiler
barrel through the branch pipe I, the branch pipe II, the branch pipe III or the branch pipe IV, and the branch pipes are respectively provided with a valve group; the high-temperature economizer and the low-temperature economizer can be connected in series, in parallel or independently operated or isolated, combination of multiple working conditions such as downstream or countercurrent or downstream and countercurrent can be achieved, the boiler load, the
smoke exhaust temperature and the inlet
smoke temperature of all environment-friendly
process equipment can be greatly adjusted, the boiler can be rapidly isolated in an accident, and long-period operation of the boiler is facilitated.