475 Technical Solutions for Reduction of Waste Fuel Specific Emissions Flue Gas t reatment Innovative Technical Solutions for Reduction of Waste Fuel Specific Emissions in Cement Plants


Technical Solutions for Reduction of Waste Fuel Specific Emissions



Download 1,15 Mb.
Pdf ko'rish
bet10/25
Sana08.07.2021
Hajmi1,15 Mb.
#113171
1   ...   6   7   8   9   10   11   12   13   ...   25
Bog'liq
2017 WM 475-498 Sarc

483

Technical Solutions for Reduction of Waste Fuel Specific Emissions

Flue 

Gas T

reatment

(2) via secondary burners to the riser duct at the kiln inlet: RDF – scrap tyres,

(3) via precalciner burners to the precalciner: SRF medium quality: d

95

 < 80 mm, LHV: 



12 to 18 MJ/kg

OS

,



(4) via a feed chute to the precalciner (for lump fuel): SRF medium quality: d

95

 < 300 mm, 



LHV: 12 to 18 MJ/kg

OS

.



2

4

1

Cyclone 


Preheater

Raw 


Meal

Calciner


3

Kiln Inlet

Secondary Firing 

System


Rotary Kiln

Cooling  Air

Clinker 

Cooler


Clinker

Primary Firing 

System

Clinker Cooling  Waste Gas



Primary Burner

Tertiary Air

Calciner Firing

300 - 350 °C

2,000 °C

350 °C


700 - 1,000 °C

850 °C


1,050 – 1,150 °C

Figure 9:  Potential feeding ports for SRF into the cement kiln 

Source:  Lorber, K. E.; Sarc, R.: Innovative Pollution Abatement Systems for Waste Fuel operated Cement Kiln. In: Gidarakos, 

E.; Cossu, R.; Stegmann, R. (eds.): Crete 2016 – 4

th

 International Conference on Industrial and Hazardous Waste Management. 



Executive Summaries. Crete, 27-30

th

 September 2016. ISBN: 978-960-8475-24-3



It has to be noted that the way of feeding fuel into the kiln is very important, as this can 

have a direct effect on the resulting emissions. The safest way to do this is such that the 

combustion gases from the fuel pass the highest temperature zone (up to 2,000 °C) of 

the kiln, namely by feeding them through the main burner [15]. 

2. Emissions from cement plants

Co-incineration of fossil, as well as alternative fuels, results in emissions to air and 

residues (for example ash) that become a part of the clinker. Type and quantity of the 

emissions do not only depend on the burning process, but also on the quality of the 

input material (in other words raw meal and fuel). Simply said, if a material with a higher 

concentration of a volatile heavy metal, for example mercury (Hg) and thallium (Tl) 

is fed into the kiln, a higher portion of this heavy metal will be adsorbed on the fine 

dust and consequently a higher concentration of the heavy metal can be measured in 

the off-gas and/or filter dust. This phenomenon is described by the volatilization in 

the hot zone of the combustion process and re-adsorption and precipitation on colder 

dust particle surface and is specific for each element. Hence, it has to be distinguished 




Download 1,15 Mb.

Do'stlaringiz bilan baham:
1   ...   6   7   8   9   10   11   12   13   ...   25




Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©hozir.org 2024
ma'muriyatiga murojaat qiling

kiriting | ro'yxatdan o'tish
    Bosh sahifa
юртда тантана
Боғда битган
Бугун юртда
Эшитганлар жилманглар
Эшитмадим деманглар
битган бодомлар
Yangiariq tumani
qitish marakazi
Raqamli texnologiyalar
ilishida muhokamadan
tasdiqqa tavsiya
tavsiya etilgan
iqtisodiyot kafedrasi
steiermarkischen landesregierung
asarlaringizni yuboring
o'zingizning asarlaringizni
Iltimos faqat
faqat o'zingizning
steierm rkischen
landesregierung fachabteilung
rkischen landesregierung
hamshira loyihasi
loyihasi mavsum
faolyatining oqibatlari
asosiy adabiyotlar
fakulteti ahborot
ahborot havfsizligi
havfsizligi kafedrasi
fanidan bo’yicha
fakulteti iqtisodiyot
boshqaruv fakulteti
chiqarishda boshqaruv
ishlab chiqarishda
iqtisodiyot fakultet
multiservis tarmoqlari
fanidan asosiy
Uzbek fanidan
mavzulari potok
asosidagi multiservis
'aliyyil a'ziym
billahil 'aliyyil
illaa billahil
quvvata illaa
falah' deganida
Kompyuter savodxonligi
bo’yicha mustaqil
'alal falah'
Hayya 'alal
'alas soloh
Hayya 'alas
mavsum boyicha


yuklab olish