*External diameter at base 6ft 1.8m
*External diameter at top 4 1/2ft 1.35m
*Internal diameter at base 3ft 0.9m
*Internal diameter at top 3ft 0.9m
*Thickness of wall at base 18cm
*Thickness of wall at top 9cm
*Perpendicular height of wall 4ft
*Height of Iron bars from grate above ground 1ft
Material Required
*Puddle swish
*5 or 6 Iron bars about 4 1/2ft 1.35m long each
*Quantity of large stones for foundation
*2 empty kerosene tins for making vent holes
*2ltrs of coal tar
*2 brushes
*Foundation 1ft-1 1/2ft deep is dug
*Filled with large stones and puddle swish to ground level
*Empty kero tins are next placed into position where the vent holes are to appear
*Wall 1ft high is built with puddle swish
*Iron bars are put in position leaving a space of about 2cm-3cm between the bars 4ft 1.2m to be reached
*Wall plastered smooth
multiple diesel fuel combustion chambers
Performance capacity
120kg/hr GRE 1.25 for HCRW
96kg/hr GRE 1.25 for general waste.
40kg/hr GRE 3.00 for plastic
Waste type: health care risk waste and general waste
Chimney stack
Chimney: 3.5mm mild steel
Height from base: 11m and if there are buildings within 30m of the
incinerator, chimney must extend at least 3m above the apexes of all
the roofs of such buildings
Diameter of chimney at top: 430mm
Weight of stack: ± 500kg
case and stack be painted with 400 °C heat resistant black paint
Burners
1st chamber 850 oC -900oC
2nd chamber 1000oC
Variable speed combustion air blowers
Primary chamber volume ±1.05 cubic metres
Mixing chamber volume ±0.30 cubic meters
Settling chamber volume ±0.89 cubic meters
Weight excluding chimney ±6 400kg at manufacture
Firing tools supplied: Hoe, poker and rake
Dimensions
Length ±2 125mm
Width ±1 890mm
Height ±2 125mm
Extra width for burners ±1 000mm
Loading door opening 610mm×540mm
Hearth area ±1.19 square metres
Description of grate/hearth: A full hearth to be supplied to prevent
contaminated liquids from flowing into ash pit without being
incinerated
Compliance with South African Atmospheric Pollution Prevention
Act No. 45 of 1965 or equivalent air pollution standard
Documents to be supplied : Operations and maintenance manual and
standard operating procedures (SOPs)
Emission controls:
heated refractory screen
Low velocity grit settling chamber
Stainless steel arrester screen
Refractory material: alumina content ≥49% and thickness average
102mm
Bake out: to be done over 2-3 days
Materials of construction
Case: 5mm mild steel
Bracing: heavy angle and channel
Hearth: 1550 °C
Ashing door: high grade cast iron
Loading door 5mm mild steel lined with 1550 °C castable general
purpose high strength, high abrasion resistant monolithic refractory
concrete
Incinerator walls and roof : 1550 °C castable monolithic refractory
concrete
Temperature: ≥90 °C
Insulation to walls: 1000 °C castable insulation
Electricity supply required: 220volt, 15amp single phase
Controls
Draught control: barometer indicator, door operated draught limiter
Air supply: built-in forced heated air ducts, primary and secondary
(intensifier)
Electric: control panel includes-circuit breakers, main switch, timer,
pilot lights, 2 set point pyrometer and one set point pyrometer