CaO HellasGREENLIME PRODUCTS AND METHOD FOR A CLEANER ENVIRONMENT

INTRODUCTION• CaO Hellas is the biggest lime producer in Greece and the Balkans.

• The group is consisted of 3 plants manufacturing lime products.

• In the last decade CaO Hellas has invested a lot in research and development, especiallyin the improvement of environment and clean technologies. As a result of this, thepatented GREENLIME method of treating industrial flue gases from toxic pollutants suchas SOx, NOx, Cl, Hg and F, has emerged.

CaO Hellas R&D in environmentCaO Hellas has gained extensive expertise in the field from the involvement in several European Research programs representing CaO Hellas aiming at CO2 capture such as:

1. CAPSOL (Design Technologies for Multi-scale Innovation and Integration in Post-Combustion CO2 Capture: From Molecules to Unit Operations and Integrated Plants) https://cordis.europa.eu/project/rcn/100978/reporting/en

2. ROLINCAP Systematic Design and Testing of Advanced Rotating Packed Bed Processes and Phase-Change Solvents for Intensified Post-Combustion CO2 Capture.

http://www.rolincap-project.eu/

3. NANOCAP, capture of CO2 and use for the industrial production of nanoparticles of precipitated calcium carbonate.

http://nanocap.cperi.certh.gr/

PLANTS LOCATION

CaO Hellas (Thessaloniki)

• This installation is located in Thessaloniki the 2nd

biggest city and port in Greece.

• Products: Building quicklime, lime slurry, hydrated lime, lime for soil stabilisation(ROADLIME), lime for agriculture (AGROLIME)

• Capacity: 50.000 tn quicklime

• 30.000-60.000 tn hydrated lime

• Type of kiln: PRFK – Parallel regenerative flow kiln

• Fuel: Petroleum Coke, LPG and biomass

• This installation is located in Volos one of the biggest cities and ports in Greece.

• Products: Chemical use quicklime, hydrated lime, dry mortars. Petroleum coke treatment

• Capacity: 120.000 tn quicklime

• 30.000-60.000 tn hydrated lime

• Type of kilns: 1. PRFK – Parallel regenerative flow kiln, 2) High temperature single shaft kiln (RCE)

• Fuel: Petroleum Coke, natural gas and biomass

CaO Hellas (Volos)

• This installation is located in Northern Greece, next to the Balkan borders and near the power plants in Greece in Greece.

• Products: Building and agricultural quicklime, special hydrated lime and GREENLIME products Biomass treatment (grinding and drying)

• Capacity: 50.000 tn quicklime

• 30.000-60.000 tn hydrated lime and GREENLIME

• Type of kiln: 1. PRFK – Parallel regenerative flow kiln type D

• Fuel: Petroleum Coke, LPG and biomass

CaO Hellas (Amyndeo)

CaO Hellas specialized products

GREENLIME PRODUCTS

MULTIPLE POINTS DRY GREENLIME INJECTION (MPDGI)

• CaO Hellas has developed a new productGROUP under the name of GREENLIME whichaims in industrial pollutants mitigation ofpollutants such as SOx, NOx, Hg, HF and HCl.These patented products have brought a newdimension in Dry Sorbent Injection (DSI) andHybrid Dry Sorbent Injection (HDSI), creatingas a result a new method of Sorbent Injectionunder the name Multiple Points Dry GreenlimeInjection (MPDGI).

• GREENLIME products are specialized sorbentswith additives based on calcium withspecialized product characteristics such assurface area, grain size and porous size

GREENLIME PRODUCTS

HYBRID INJECTION TO ENHANCE PERFORMANCE (FURNACE INJECTION & IN-DUCT INJECTION)

• GREENLIME grains that have beendesigned with special physical andchemical characteristics can beinjected simultaneously orseparately in boiler burning zone andflue gas duct where following theflue gases to the filters cansubstantially reduce emissions ofSOx, NOx, HF, Hg, dioxins andfurans.

GREENLIME BY PRODUCTS OR RECYCLING

In the end, the GREENLIME grains are

collected from environmental technology

such as ESP and Bag filters where they can

either be rejected as finished building by

products or they can be recycled until

sorbent activity is limited.

PLANTS USING GREENLIME PRODUCTS

LIGNITE POWER PLANTS

HAZARDOUS WASTE INCINERATORS

CEMENT PLANTS

MAGNESIA PLANTS

HOLCIM CEMENT PLANT LEBANON

ΜΟΝΑΔΑ ΑΠΟΤΕΦΡΩΣΗΣ ΕΠΙΚΙΝΔΥΝΩΝ ΙΑΤΡΙΚΩΝ ΑΠΟΒΛΗΤΩΝ ΣΤΑ ΝΕΑ ΛΙΟΣΙΑ ΑΤΤΙΚΗΣ

Boiler injection με επιτυχής μείωση SOx, NOx, Hg, Cl, διοξίνες και φουράνια

ΑΠΟΤΕΦΡΩΤΗΡΑΣ Α.Ε

AGHIOS DIMITRIOS POWER PLANT

• Aghios Dimitrios Power Plant

• 1500 MW using lignite

• SO2 emissions level < 3.000 mg/Nm3

• Reduction point < 200 mg/Nm3

• Flue gas volume: 2.000.000 Nm3/hr (UNIT 3)

• Sorbent characteristics: < 27 m2/gr surface area

• Hybrid system with recirculation of unused sorbent with extra ESP

HYBRID GREENLIME INJECTION. STAGE 1. IN – DUCT INJECTION

• STAGE 1.

• GREENLIME in-duct injection at UNIT 3 II of 300 MW POWER

• GREENLIME injection at temperature range up to 170 o C.

• In duct injection results were improved by water humidification system in order to reduce the adiabatic saturation temperature of the flue gases.

STAGE 2. GREENLIME COMBINED IN-DUCT INJECTION

• STAGE 2.

• GREENLIME PRODUCTS in-duct injection at UNIT 3 II of 300 MW POWER.

• Combined injection at temperature range up to 300 o C.

STAGE 3. FURNACE INJECTION• STAGE 3.

• FIRELIME was introduced at ignition point were pollutants concentration was highest. Pop corn effect occurred when FIRELIME was injected at ignition point resulting to a sorbent with enhanced physical characteristics boosting performance.

• FIRELIME was introduced with lignite feeding or at primary combustion air supply.

• The innovation was the injection at high temperature (1000 o C) where the maximum performance was caused due to the instantaneous action of the enhanced sorbent at the maximum pollutant concentration.

• The key point is the speed of reaction of sorbent with the pollutants at burning zone where their concentration is maximum before sintering effect takes place to the pores of the sorbent and becomes reactive. FIRELIME due to its characteristics and due to the popcorn effect can be very effective at high temperatures before sintering effect takes place.

Halyps cement plantClinker production : 2.000 tn/dayAnnual cement production: 1.000.000 tnEmissions level: > 3.000 mg/Nm3Emissions reduction: < 200 mg/Nm3

STAGE 4. HYBRID INECTION OF FIRELIME AND GREENLIME PLUS RECIRCULATION OF UNREACTED MATERIAL

• STAGE 4.

• MPDGI was fully introduced at unit 3 consisting of:

1. FIRELIME furnace injection

2. GREENLIME in duct injection

3. RECIRCULATION of unreacted sorbent collected from 2nd ESP and injected in duct.

• Performance was maximum and target point achieved easily and in a constant manner. Complete system responded very well.

GREENLIME CHARACTERISTICS

• SURFACE AREA (BET) 34-45 m2/gr

Particle Diameter (µm.)

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0.01 0.1 1.0 10.0 100.0 1000.0

www.caohellas.gr

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