SIEMENSPakistan

SIEMENS

Energy Industry Healthcare

LP GP IS

CE & BTLV

MD LDI

AS SC

IS IA / DT

CONTROL EQUIPMENTS

&

LOW VOLTAGE BUILDING TECHNOLOGIES

SIVACON 8PS Bus Bar Trunking System

LR System(630A to 6300A) LX System (800A to 6300A) LD System (1100A TO 5000A) BD2 System (160A to 1250A) BD01 System (40A to 160A) CD-K System (25 to 40A)

Contactors

A contactor is an electrically controlled switch used for switching a power circuit, similar to relay except with higher current ratings.

To control electric motors,lighting, heating, capacitorbanks, and other electricalloads.

Circuit Breakers

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage used by overload or short circuit.

Types of Circuit Breakers:ACBMCCBMCB

MECHANICAL DRIVES

Gearbox

A gearbox provides speed and torque conversions from a rotating power source to another device using gear ratios.

Types of Gearbox:BevelHelicalPlanetaryWormSpur

Gear Motor

A gear motor is a type of electrical motor. It uses the magnetism induced by an electrical current to rotate a rotor that is connected to a shaft. The energy transferred from the rotor to the shaft is then used to power a connected device.

Coupling

A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. The primary purpose of couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both.

LARGE DRIVE INDUSTRIES

AC Drives:

AC drives or VFDs or AFDs or Inverters are used to control the speed of an AC motor. In other words we can say that AC drives are used to eliminate torque so that the motor can work more efficiently, without losing energy.

Types of AC Drives (w.r.t inverter): VVI CSI PWM

AUTOMATION SYSTEM

PLC:

A programmable logic controller (PLC) or programmable controller is a digital computer, automation of electromechanical processes, such as control of machinery on factory assembly lines, amusement rides, or lighting fixtures.

SIMATIC Controllers:

LOGO! S7 200 S7 300 S7 400 S7 1200

CEMENT MANUFACTURING PROCESS

Assignment….

Cement Manufacturing Flow sheet

Cement Manufacturing Process

1. The cement manufacturing process begins when limestone, the basic raw material used to make cement, is is either quarried from an open pit quarry or mined from an underground mine.

Cement Manufacturing Process

2. Limestone should be crushed and grinded before further usage. Crusher reduces the size of the limestone from 1m to 15 mm size.

Cement Manufacturing Process

3. The limestone is combined with clay, ground in a crusher and fed into the additive silos. Sand, iron and bottom ash are then combined with the limestone and clay in a carefully controlled mixture which is ground into a fine powder in a 2000 hp roller mill.

Cement Manufacturing Process

4. Next, the fine powder is heated as it passes through the Pre-Heater Tower into a large kiln, which is over half the length of a football field and 4.2 meters in diameter. In the kiln, the powder is heated from 1350 to 1450 degrees Celsius. This creates a new product, called clinker, which resembles pellets about the size of marbles.

Cement Manufacturing Process

5. The clinker is combined with small amounts of gypsum and limestone and finely ground in a finishing/grinding/ball mill. The mill is a large revolving cylinder containing 250 tons of steel balls that is driven by a 4000 hp motor.

Cement Manufacturing Process

6. Now, the cement is ready for storage into the cement silos. From silos the cement is moved to packing plant for packing, distribution and shipping.

Cement Process Analysis

CE & BTLV Products:1. Air circuit breakers (ACBs) in the low-voltage main switchboard

ensure the power distribution in a cement plant.2. Using SIVACON 8PS bus bar trunking system, space saving power

distribution for production halls/storage halls is possible. BD02 can be used as power backbone (main distribution), BD01 for lighting, LD system can also be applied power distribution, LR system for rough ambient conditions.

3. Contractors, overload relays & soft starters can be used for motors protection.

4. Push button units, indicators & signaling columns can be used for EMERGENCY-STOP and in the control room for monitoring complex procedures.

Cement Process Analysis

MD Products:1. BEVEL-HELICAL GEAR UNITS or HELICAL GEAR UNITS

can be applied at Conveyor drives & Bucket elevator drives.

2. PLANETARY GEAR UNITS can be applied at Rotary kiln drive, Bucket wheel drives, Apron conveyor drives.

3. COUPLINGS can be applied for transmission between drives at Conveying systems, Mixers, Crushers, Bucket wheel excavators.

4. GEAR MOTORS can also be applied to Conveyor drives, Bucket elevator drives.

Cement Process Analysis

LDI Products:1. AC MOTORS can be applicable with the gear units.2. AC DRIVES can be applied to• Fans• Pumps• Grinding mills• Kilns• Crushers• Conveyors• Mine hoists

Cement Process Analysis

AS Products:1. SIMATIC controllers / PLCs can be used for

controlling machines, exhaust and filtering systems, conveyor systems, elevators, Silo facilities, vehicle control monitoring, alarm systems, level limiting monitoring, baggage handling, interior/exterior lighting control, door gate control etc.

2. SIPLUS versions for harsh environment.

Cement Process Analysis

SC Products:1. SITRANS family can be applied at various

processes throughout the cement industry. For instance:

2. For flow measurement at silos, grinding mills, kiln, clinker cooler etc.

3. For temperature limiting, monitoring, measuring preheating tower, kiln & clinker cooler.

4. Also for process controlling, level monitoring, pressure controlling etc.

UMAR ALTAF HUSSAIN

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