Alfa-Therm Limited Alfa Therm Limited - ISO 9001:2000 Company

General Waste Incinerators

 

 

Type of WASTE that can be Incinerated

  • Paper
  • Timber, Refusing textures
  • Rice grass
  • Non-eatable foods
  • Any other waste having some combustible value.

Various Incinerators supplied to Defence, Schools, Embassy, Shrine Boards, Hotels and Industries throughout India.
 

Technical Specification

Model Capacity Kgs/hr Model Capacity Kgs/hr
GW - 5 5 GW - 100 100
GW - 10 10 GW - 125 125
GW - 15 15 GW - 150 150
GW - 20 20 GW - 175 175
GW - 25 25 GW - 200 200
GW - 30 30 GW - 250 250
GW - 40 40 GW - 300 300
GW - 50 50 GW - 400 400
GW - 75 75 GW - 500 500

Automatic Waste Feeding - Pneumatic Ram Loader

Garbage Incinerators

Garbage Incinerators

 

Type of WASTE that can be Incinerated
Type A :

Trash, a mixture of highly combustible waste such as paper, cardboard, cartons, wood boxes and combustible floor sweepings from commercial and industrial activities. The mixtures contain upto 10% by weight of plastic bags, coated paper, laminated paper, treated corrugated cardboard, oily bags and plastic & rubber scraps. This type of waste contains 20% moisture, 5% incombustible solids and has a heating value of 4700 kcal. per kg. as fired.

Type B :

Rubbish, a mixture of combustible waste such as paper, cardboard cartons, wood scrap, foliage and combustible floor sweeping from domestic, commercial and industrial activities. The mixture contains upto 20% by weight of restaurant or cafeteria waste, but contains little or no treated papers, plastic or rubber wastes. This type of waste contains 25% moisture, 10% incombustible solids and has a heating value of 3600 kcal. per kg as fired.

Type C :

Refuse, consisting of an approximately even mixture of rubbish and garbage by weight. This type of waste is common to apartment and residential occupancy, consisting of upto 70% moisture, 7% incombustible solids, and has a heating value of 2350 kcal per kg as fired.

Type D :

Garbage, consisting of animal and vegetable wastes from restaurants, cafeterias, hotels, hospitals, markets and like installations. This type of waste contains upto 75% moisture, upto 5% incombustible solids and has a heating value of 1400 kcal per kg as fired.

Type E :

Human and animal remains, consisting of carcasses, organs and solid organic wastes from hospital and similar sources, consisting of upto 85% moisture, 5% incombustible solids, and having a heating value of 550 kcal per kg as fired.

 

Garbage Incinerators

CONSTRUCTIONAL DETAILS FOR "ALFA-THERM" OIL FIRED INCINERATORS

Incinerator is of twin chamber design, where refractory lined chambers are mounted on top of each other. Volatilisation of waste is achieved in primary chamber through supply of air through various nozzles on all sides of the primary chambers. Heat is generated with fuel oil burner with auto operation system.

Volatilised/gasified matters from waste is taken up to secondary chamber. The heat source in this secondary chamber is auto controlled fuel oil secondary burner. A cyclone separator is provided after the secondary chamber to collect the suspended particals in the flue gases before liberating them through the flue stack. After the gases leave the cyclone separator, it enters the eductor assembly where fresh air is mixed with these flue gases. This reduces the flue gas temperatures making it safe to be let out in the atmosphere.

In the incineration process, the waste is thermally decomposed in the primary chamber at a temperature of 800±500 C. The gaseous products (volatile mater) are completely oxidised in the secondary chamber due to sufficient residence time, high temperature (1050±500 C.) high turbulence and 100% excess air. The flame port through which the gases pass from primary chamber to secondary chamber is sized to produce high velocity for excellent mixing of combustion air and gases.

The Incinerator incorporates primary and secondary chambers provided with fully automatic burners, forced draft fans with motor, digital temperature controllers for both burners, charging door, ash removal door, charge door insulated against air leakage, cyclone separator etc.

Both the chambers are fitted with burners to fire support fuel for initial heating up of chambers to required temperatures as well as maintain these temperatures in case of wet waste.
  • Main Combustion Chamber/Primary Chamber
    This is fabricated out of Mild Steel material and is refractory lined from inside with dense castables backed by insulating castable. This is equipped with loading door, ash removal door and automatic burner operated by temperature indicating controller which is set at 800±500 C. High pressure air from a blower is provided through a number of nozzles fitted in the walls of the primary chambers. Since refractory is very thick and air is circulated within the chamber, it ensures a very low skin temperature of the Incinerator.
  • Post Combustion Chamber/ Secondary Chamber
    This is also fabricated out of M.S. and refractory lined similar to primary chamber. This is equipped with automatic burner. A temperature controller is provided, which is connected to the control panels. The operating temperature is 1050±500 C. Air is provided in the secondary chamber through the common F.D. Fan for primary chamber.
  • Electrical Control Panel
    The control panel supplied alongwith the Incinerator is outdoor type and placed separately. All controls will be housed within this common control panel. The panel is duly powder coated. It houses the primary and secondary burner controls, all the temperature controllers, motors starters, isolator switches, overload relays for burners and fans and audio visual alarms for abnormal workings. All electrical power, earth and control cabling from the control panel to the individual drives and components shall be provided by us. The control panel is pre-wired. However, external wiring is to be carried out at site.
  • Cyclone Separator
    Cyclone separator is provided to extract suspended particles from the flue gases so as to make them safe for the environment. The cyclone is an inertial separator. The gas entering the cyclone forms a vortex, which reverses direction and forms a second vortex leaving the cyclonic chamber. Particulate matter, because of its inertia tends to move towards the outside wall. The particles drop from this wall, the sides of the cyclone, to the bottom of the cyclone separator for ultimate disposal.
  • Eductor
    Flue gas are mixed with fresh air in the eductor. This reduces the flue gas temperature.
  • Eductor Fan
    An eductor fan is provided to give fresh air inside the eductor. The eductor fan is dynamically balanced and is connected to the electric motor.
  • Forced Draft Fan
    A forced draft fan is provided to supply air inside the primary and secondary chambers. The F. D. Fan is also dynamically balance and is connected to the electric motor.
SAFETIES & CONTROLS
  • The burners are oil fired package type and include an electric motor, sequence controller, flame failure device, fuel pump, direct drive fan, air regulation damper, ignition transformer, ignition electrodes, nozzle and combustion head. This arrangement keeps combustion to absolute optimum which makes burner operation safe and sound and trouble free.
  • Primary burner operation has an electrical interlock with door opening micro switch. As soon as door is opened while the incineration is in process, primary burner goes off thereby avoids accidental hot gas volatiles coming out of Incinerator.
  • Digital temperature controllers are provided for accurate monitoring of the temperatures and controlling of the temperature within the desired limits.
  • Cyclone separator is provided to extract suspended particles from the flue gases so as to make them safe for the environment.
CONTROL PANEL
The control panel supplied alongwith the Incinerator is placed separately. It houses the primary and secondary burner controls, primary and secondary chamber temperature controllers, motors starters, isolator switches, overload relays for burners and fans, flue gas temperature indicator cum controller and audio visual alarms for abnormal workings.
 
PRE-WIRING AND PRE-PIPING
An electrical supply will have to be connected on site to the phase and neutral terminals in the control panel. All piping between the burners is fitted and terminals with a single threaded connection to switch a fuel supply will require to be connected. A return line is also attached which is to be connected for the fuel oil supply tank.
PRE-WIRING AND PRE-PIPING
An electrical supply will have to be connected on site to the phase and neutral terminals in the control panel. All piping between the burners is fitted and terminals with a single threaded connection to switch a fuel supply will require to be connected. A return line is also attached which is to be connected for the fuel oil supply tank.

Butcher waste Incinerators

Incinerator with Cyclone Separator