US 2018/0093220 A1

Method and device for wet flue-gas desulfurization

(22) 01.04.2016

(43) 05.04.2018

(57) In order to heighten the recovery of activated carbon by separation in a flotation device and stably inhibit mercury from being re-emitted in a desulfurization/absorption tower and from coming into gypsum to be recovered, a method is provided, the method comprising: adding activated carbon to an absorption liquid to be sprayed into the desulfurization/absorption tower to thereby remove mercury components from the flue gas simultaneously with desulfurization of the flue gas; sending the absorption liquid used for the desulfurization to the flotation device to thereby form a foam bubble layer; reducing the drainage volume so that the physical properties of the bubble layer are within given ranges, in such an amount that the concentration of chlorine ions in the absorption liquid does not exceed a given value; and simultaneously adding Ca and/or Mg ions and a frothing agent to the absorption liquid.

(71) Mitsubishi Hitachi Power Systems, Ltd., Yokohama-shi, Kanagawa (JP)

(73) Mitsubishi Hitachi Power Systems, Ltd., Yokohama-shi, Kanagawa (JP)

x

Related articles:

Issue 2017-7-8 EP 3 170 547 A1

Flue gas desulfurization apparatus and method of operating same

(22) 17.07.2015 (43) 24.05.2017 (57) Provided is a method of operating a flue gas desulfurization apparatus, in which gypsum slurry containing gypsum, which is obtained by bringing sulfur oxide...

more
Issue 2016-12 US 2016/0304374 A1

Method for removing mercury from ­washer suspensions

(22) 06.04.2015 (43) 20.10.2016 (57) A method for removing mercury from flue gas in a flue gas desulfurization plant, in which the mercury concentration in the FGD gypsum is reduced without increasing...

more
Issue 2017-11 WO 2017/158177 A1

Cement clinker line and a method for operating a cement clinker line

(22) 17.03.2017 (43) 21.09.2017 (57) A method for manufacturing clinker comprising sintering raw meal in a kiln to clinker, preheating the raw meal in a preheater using a main flue gas stream from the...

more
Issue 2019-9 PL3219689 (T3)

Cement clinker line and a method for operating a cement clinker line

(22) 18.03.2016 (43) 28.06.2019 (57) Summary of the corresponding patent EP3219689 (A1): A method for manufacturing clinker comprising sintering raw meal in a kiln to clinker, preheating the raw meal...

more
Issue 2018-10 PL3219688 (T3)

Cement clinker line and a method for operating a cement clinker line

(22) 18.03.2014 (43) 31.07.2018 (57) Summary of the corresponding patent EP3219688 (A1): A method for manufacturing clinker comprising sintering raw meal in a kiln to clinker, preheating the raw meal...

more