Energy audit and waste heat recovery system design for a cement rotary kiln in Ethiopia: A case study 2985 grate cooler to cool the clinker. The cooled clinker is then transported to the clinker concrete silo for storage. The current study focuses on this sub-process [9]. Figure 2. Typical clinker …
8 Slide 15 Lime Kiln Heat Rate • Heat rate is a measure of energy efficiency – Units are MM Btu/ton CaO or GJ/tonne CaO – Often stated as MM Btu/ton "product" • Typical range – 5 to 9 MM Btu/ton CaO – 5.8 to 10.5 GJ/tonne CaO – Lower is better Slide 16 Lime Kiln Energy Balance Components • Drying • Calcining : CaCO3 + heat ÄCaO + CO2 • Losses – Heat loss through shell
cooler operation parameters such as clinker temperature, cooler efficiency and heat losses. These parameters have to be monitored continuously to ensure the cooler is operated efficiently. Therefore, the mass and heat balance calculation are very vital calculation in a cement process plant.
Nov 04, 2014· Clinker cooler's efficiency 1. From Clinker Cooler Clinker Temp. 1400oC Reduces To 100 .. 200oC 2. Cooler Thermal Efficiency: * 100 h = A - B A Notation: A = Heat content of clinker leaving the kiln B = Heat losses of clinker cooler B consists of = Heat loss in cooler exit air Heat loss in clinker leaving cooler a = Heat …
the heat consumption of clinker was reduced from 3286.98 kJ/kg cl to 3252.41 kJ/kg cl. ... (grate cooler) utilizes air to quench the clinker, and as a result, the air itself can be quickly heated. ... 3.1 Definition of Effective Heat and Thermal Efficiency Heat balance analysis was introduced to address both the input and output heats of the whole
The cement clinker burning process 3. Assessment of carbon dioxide control technologies ... clinker fuel primary air cooler exhaust gas kiln feed tertiary air secondary air ... (approximately 1000 balance spaces) balance spaces. Schematic diagram of the clinker burning process (reference) raw mill raw gas filter fuel clinker
(Tool : Heat Balance Method) Principle of prediction: Production capacity is approximately proportional to exhaust gas rate which flows through kiln. 1 - SP kiln with Grate cooler : 1.4 m3N/kg-cl - SP kiln with Satellite cooler : 2.0 m3N/kg-cl - Dry kiln : 2.6 m3N/kg-cl - Wet kiln : 2.4 m3N/kg-cl
balance Electricity Big motor load factor Air leakage O2 Balance (gas analysis) Waste heat recovery Same as above Motor power, pressure balance Air compressor Transformer load factor & power factor Clinker (t/d), coal to kiln (t/d), coal to precalciner (t/d), Temperature (SP exit gas, cooler exit gas, clinker) Heat Heat & material balance 20
The efficiency of a clinker cooler mainly depends on how effectively the heat is recovered from the clinker and the losses from the cooler surface, i.e. through conduction, convection, or rdiation to the surroundings a (Mundhara and Sharma, 2005). Worrell et al. (2008)stated that i mproving heat recovery efficiency in the cooler will result in ...
Exhaust air heat (grate cooler) 116 14.7 116 15.1 Radiation heat loss (preheater, kiln, cooler) 76 9.6 71 9.2 Heat in discharged clinker 21 2.6 21 2.7 TOTAL 786 100 766 100 Heat input from fuel fired, viz coal 734 - 714 - Table - 1 : Heat Balance for a Typical Cement Plant
1. CLINKER COOLER 2 CLINKER COOLER Reduce clinker temperature from approx. 1400 o C to approx 100 ~ 200 o C The heat of the incoming clinker is recuperated in the secondary air of Kiln An efficiency of incoming clinker heat usually lies within 65 ~ 75% 3 Clinker Cooler Type 1. Grate Cooler Cross flow heat exchange through clinker bed with cold air Grate movement : reciprocating; …
Analysis of energy balance was used to determine the sources of heat loss from kiln system. The major heat loss is Heat losses by the kiln exhaust gas (19.15%) Hot air from cooler stack (5.61% ...
This chapter describes the advent of Clinker Coolers with discussion and description of various types of coolers presently available. The purpose of the cooler is to recoup some of the heat in the clinker thereby making it cool enough to handle.
the kiln and the Calciners. The streams leaving the system are clinker out from the cooler, the exhaust gases from the preheater and the hot air out from the cooler. MASSBALANCE AND ENERGY BALANCE Mass balance The average compositions for dried coal are shown in Fig. 1 Based on the coal composition, the net heat value has been found to
Claudius Peters Clinker Crushers. The hammer crusher is the standard solution for crushing clinker. Claudius Peters has been supplying hammer crushers worldwide for capacities up to 6000 t/d since 1955. Claudius Peters developed the roller crusher for use in clinker coolers at the end of the 1970s. Today, the roller crusher is the standard unit for crushing the clinker inside the clinker cooler.
With the method of calculating the mass balance, heat balance and tool efficiency, with an operating temperature of 900oC - o1450 C and a material mass of 526,625 kg. Keywords: kiln, mass balance, heat balance, efficiency ... menuju clinker cooler disebabkan karena adanya kemiringan 4o dan mempunyai putaran 2,48 rpm[1].
Table 6. Typical Available Heat for Grate Clinker Coolers. ..... 16 Table 7. Typical Available Heat and Power Generation from Preheater/Grate Clinker Cooler. ..... 17 Table 8. Heat Required for Raw Material Drying ..... 18 Table 9.
High efficiency clinker cooler, Biomass power generation 101.3 Residential sector High efficiency air conditioner, High efficiency gas stove, Solar water heater, High efficiency gas cooking device, High efficiency television, High efficiency VTR, Latent heat recovery type …
Nov 28, 2016· Clinker is moved smoothly along as a ''live" load by reciprocating motion. Abrasive action on the grates is virtually eliminated. The Air-Quenching cooler is designed to recuperate over 75% of the sensible clinker heat and return it to the kiln as highly preheated secondary air for …
(780 kJ/kg clinker) of the total heat input to the unit. The sensible heats with . the raw . materials, fuel and air entering the coolers. heat . content are very small. The total sensible heats with . streams are about 0.2% of the total heat input to the unit. Therefore, total heat input of . 801.9 . kJ/kgcl. inker. is
Cooler（）.ppt,Clinker cooler optimization Cooler optimization Content Performance indicators Cooling air flow rates Two Major Functions clinker cooling recover hot gases toward kiln precalciner coal mill raw mill cogeneration Performance Indicators Cooling Efficie
Figure 3. Cooler exergy balance . 4. COOLER MODELING . The clinker cooling in steady-state conditions is modelled by a series of contactors (Fig. 4) with a perfect cross-flow heat exchange [6]. The heat transfer and the pressure drop are defined by correlations referring to macroscopic hydrodynamic criteria. The number of stages in the warm
Nov 02, 2011· Heat balance excel sheet - detailed calculations. Sharing is caring: here is my contribution to cement engineers community.An excel sheet (MS excel 2003) that can does heat balance for pyro section of cement industry.This sheet is absolutely leagl as it's my personal work.
Kiln Heat Balance Process - Free download as Powerpoint Presentation (.ppt) or view presentation slides online.
The factory's collected data was the temperature of waste heat from the grate cooler stack of 285℃ with the amount of 1.938 kg/kg of clinker and which leave the six cyclone preheater tower stack ...
Nov 05, 2012· 3.4 Burning in a kiln – formation of cement clinker. 3.4 Burning in a kiln – formation of cement clinker.The next step in the process is to heat the blended mixture of raw ingredients (the raw mix) to convert it … »More detailed
4.1 Energy Analysis of the Base Case Clinker Cooler . The energy analysis for the base case grate clinker cooler is performed by using the formulas in Table 3.1The mass balance of the system first needs to be . analyzed to show that the clinker cooling process is …
Mar 09, 2018· Technology for a better society 1 WP9 – HeidelC, VDZ, IKN ECRA / CEMCAP Workshop 6th/7th of November 2017, Düsseldorf Dr. Robert Mathai IKN Oxyfuel Cooler Prototype (and…