FGD-Limestone Grinding Plants General Technical Training MJ /

FGD-Limestone Grinding Plants General Technical Training MJ / General Technical Training for CEMTEC FGD-Limestone Grinding Plants and Equipments thereof 2 CEMTEC Cement and Mining Technology GmbH Ennshafenstrasse Enns, Austria T: F: E:

FGD-Limestone Grinding Plants General Technical Training MJ / The FGD-limestone grinding plants are installed in coal fired power plants to prepare the „ready-for-use“ limestone-water-suspension. Pre-crushed limestone is milled in a closed wet grinding circuit and afterwards used to react with the flue gas to gypsum in the FGD-towers. FlueGasDesulfurization-Process pre crushed limestone limestone grinding FGD-process gypsum dewatering

FGD-Limestone Grinding Plants General Technical Training MJ /

FGD-Limestone Grinding Plants General Technical Training MJ / Typical General Layout (including control room layout)

FGD-Limestone Grinding Plants General Technical Training MJ / Turn-Key Plant Layout (including Control room)

FGD-Limestone Grinding Plants General Technical Training MJ / Main Equipments deliverable by CEMTEC -limestone transport and daily storage area including pre-crushing (if necessary) -limestone dosing belts -wet grinding mills including lubrication systems -process water dosing by means of regulation valves -limestone slurry tank (circulation tank after mill) including agitator -slurry pump including additional stand-by pump (on demand) -hydrocyclone clusters including stand-by cyclones (1 spare or more according demand) -limestone slurry piping system including valves and distribution into limestone slurry storage tank (according detailed take over point requirements) -process water piping according detailed take over point requirements -instrumentation -auxiliary media piping such as instrument air, purging water, cooling water etc. -electrical equipment and control system (MCC, FCC, PLC according detailed project specification)

FGD-Limestone Grinding Plants General Technical Training MJ / Auxiliary Equipments deliverable by CEMTEC (on demand) -secondary structures as piping supports, maintenance platforms and walkways -sound deadening covers for ball mills -grinding media filling devices -grinding media sorting machine -maintenance handling systems (e.g. monorail crane)

FGD-Limestone Grinding Plants General Technical Training MJ / Flow-sheet

FGD-Limestone Grinding Plants General Technical Training MJ / CEMTEC-turn-key plant

FGD-Limestone Grinding Plants General Technical Training MJ /

FGD-Limestone Grinding Plants General Technical Training MJ /

FGD-Limestone Grinding Plants General Technical Training MJ / feeding materialpre-crushed limestone (recommended maximum grain size 20 mm) - final productlimestone slurry (normal fineness P90 = 44 μm) - process water - purging water - compressed air/service air - compressed air/instrument air General Data / Utilities

FGD-Limestone Grinding Plants General Technical Training MJ / Daily storage silo and material feed

FGD-Limestone Grinding Plants General Technical Training MJ / Daily storage silo and material feed

FGD-Limestone Grinding Plants General Technical Training MJ / Grinding mill including auxiliaries thereof

FGD-Limestone Grinding Plants General Technical Training MJ / Grinding mill including auxiliaries thereof

FGD-Limestone Grinding Plants General Technical Training MJ / Wet grinding mill section (lining not shown)

FGD-Limestone Grinding Plants General Technical Training MJ / Grinding mill inlet

FGD-Limestone Grinding Plants General Technical Training MJ / Grinding mill inlet detailDilution water mill inlet

FGD-Limestone Grinding Plants General Technical Training MJ / Grinding mill discharge

FGD-Limestone Grinding Plants General Technical Training MJ / Grinding mill discharge detail Dilution water mill discharge

FGD-Limestone Grinding Plants General Technical Training MJ / Circulation tank and slurry pumps

FGD-Limestone Grinding Plants General Technical Training MJ / Slurry circulation tank with agitator

FGD-Limestone Grinding Plants General Technical Training MJ / Circulation tank and slurry pumps

FGD-Limestone Grinding Plants General Technical Training MJ / Hydrocyclones and density measurement

FGD-Limestone Grinding Plants General Technical Training MJ / Hydrocyclone clusters

FGD-Limestone Grinding Plants General Technical Training MJ / Slurry diverter valve

FGD-Limestone Grinding Plants General Technical Training MJ / Density measurement

FGD-Limestone Grinding Plants General Technical Training MJ / Limestone slurry (product) tank

FGD-Limestone Grinding Plants General Technical Training MJ / Valves and piping

FGD-Limestone Grinding Plants General Technical Training MJ / limestone slurry piping

FGD-Limestone Grinding Plants General Technical Training MJ / process water piping

FGD-Limestone Grinding Plants General Technical Training MJ / purging water piping

FGD-Limestone Grinding Plants General Technical Training MJ / Starting with cut of valves at take over point(s)

FGD-Limestone Grinding Plants General Technical Training MJ / flow control valves for dilution water process piping for limestone slurry

FGD-Limestone Grinding Plants General Technical Training MJ / including limit switches for end positionse.g. pneumatic actuated valves

FGD-Limestone Grinding Plants General Technical Training MJ / instrumentation local control boxes and local indication

FGD-Limestone Grinding Plants General Technical Training MJ / Auxiliary media piping instrument air for pneumatic actuators purging water piping

FGD-Limestone Grinding Plants General Technical Training MJ / Control system

FGD-Limestone Grinding Plants General Technical Training MJ / NoAutomatic Sequences including Subsequences 01Grinding circuit production sequence 02Grinding circuit standby sequence 03Central lubrication sequence 04Gear rim lubrication sequence 05Main/standby pump changeover sequence 06Mill antisedimentation sequence 07Mill main drive sequence 08Slurry pump circuit purging sequence 09Mill purging sequence 10Hydrocyclones and mill purging sequence 11Hydrocyclones purging sequence 12Tank emptying sequence 13Knife gates purging sequence 14Mill inlet purging sequence 15Mill discharge coarse overflow purging sequence Operating modes The operating modes managed by the PLC are the following : Maintenance (with local selector on “LOCAL”); manual (with local selectors on “REMOTE”); Automatic (with local selectors on “REMOTE”);

FGD-Limestone Grinding Plants General Technical Training MJ / HMI - Plant overview

FGD-Limestone Grinding Plants General Technical Training MJ / HMI – Grinding circuit overview

FGD-Limestone Grinding Plants General Technical Training MJ /

FGD-Limestone Grinding Plants General Technical Training MJ / HMI – Grinding mill overview

FGD-Limestone Grinding Plants General Technical Training MJ / HMI – Pump and hydrocyclone overview

FGD-Limestone Grinding Plants General Technical Training MJ / HMI – Settings (password protected)

FGD-Limestone Grinding Plants General Technical Training MJ / Auxiliary Equipments maintenance platforms and walkways

FGD-Limestone Grinding Plants General Technical Training MJ / sound deadening covers for ball mills

FGD-Limestone Grinding Plants General Technical Training MJ / grinding media filling/refilling devices

FGD-Limestone Grinding Plants General Technical Training MJ / grinding media sorting machine

FGD-Limestone Grinding Plants General Technical Training MJ / Thank you!