Techtrol Limited

pyrotec clinical no. 1/5

design
The Pyrotec C is a modern incinerator designed to burn solid waste in a clean and environmentally safe manner. Using the Pyrolytic principles of combustion, it is particularly suited for a wide range of waste material. This model is specifically for burning clinical waste from hospitals and research centres and is equipped with the necessary sophistication of control, secondary chamber volume, and gas cleaning equipment to satisfy the most stringent environmental standards. The combustion chamber arrangement is a multiple stepped hearth, with waste loading taking place at the highest level. Each hearth has an evacuation ram to manoeuvre the residue through the chamber and finally into the ash treatment zone. This design enables continuous operation during a 24 hour period with automatic ash removal during the cycle.

models
C150, C250, C500, C750, and C1000. Larger models and special purpose incinerators are available and designed to satisfy customer specification.
Clinical 1-5 incinerator Clinical 1-5 incinerator

standard
United Kingdom - Environmental Protection Act PG5/1 (95), or IPR5/2. Or with additional equipment to EU Hazardous Waste and Non-Hazardous Waste Directive. Secondary Chamber residence time :- 2.0 seconds at 1,000ºC to 1,200ºC

waste type
Clinical waste
Calorific value 4,000 KCal/Kg, density 50 to 100 Kg/m³.

construction
Mild steel fabricated construction using 6mm, 8mm and 10mm steel plate suitably braced and stiffened.

refractory
Primary Chamber
Hot face material 1,400ºC quality 115/150mm thick, backed by 76mm of Calcium silicate insulation.

Secondary Chamber
Hot face material 1,600ºC quality 76/150mm thick, backed by 76/115mm Calcium silicate insulation.

fuel
Natural gas, LP gas or 35 seconds fuel oil.

electricity
380/440 Volt. 3 phase. 50/60Hz.

burners
Automatic package burners complete with electric ignition and flame failure control complete with all necessary valves, motors and integral continuous running fan. Automatically temperature controlled to provide optimum combustion conditions, secondary chamber temperatures and fuel economy. The number and capacity of primary and secondary burners will be designed to suit the duty and incinerator model.

fans
All combustion and cooling air is provided by automatically controlled centrifugal fans which provide air to nozzles strategically located throughout the combustion chambers to ensure optimum conditions.

preheated combustion air
A heat exchanger beyond the secondary combustion chamber provides preheated combustion air for use in the primary and secondary combustion chambers to maximise efficiency and minimise auxiliary fuel usage.

finish
Two coats of primer followed by two coats of enamel finish in burgundy.

control panel
Automatic control system built to IEC Standards incorporating PLC controller, to provide all the necessary automatic plant functions and incorporating the following sequences.

1. Preheat
2. Burn Cycle
3. Automatic loading
4. Burndown
5. Cooldown
6. Ash removal

The control panel will be equipped with an active mimic diagram , or a VDU as required, showing operating status of the plant together with indication of the primary and secondary chambers and exhaust temperatures.

monitors
Particulate monitor, Carbon monoxide and Oxygen monitor. Additional monitors for Nitrous oxide, Sulphur dioxide, HCI and VOCs will be provided, as demanded by legislation.

loading door
Vertical lifting, hydraulically operated, sized to suit ram loading machine.

loading
Hydraulically powered automatic fully sequenced ram loader designed to operate in unison with the incinerator operation having a programmable time and temperature sequence to ensure maximum throughput. Water sprays around the loader throat for ram plate quenching.

waste handling
Waste bin tipping systems to suit 500, 660 and 1,100 litre bins designed to empty directly into the ram loader.

gas cleaning equipment
Gases from the heat recovery system are cooled to temperatures compatible with the dry gas cleaning system. The dry gas cleaning system is designed to remove contaminants from the gas stream to within specified limits using proven filtration techniques. To achieve the required degree on contaminant removal a sorbent reagent and activated carbon are introduced into the gas stream, the intimate mixing and long residence time promoted in the reaction chamber maximises absorbtion efficiencies prior to the removal of solid materials in the filtration unit. Gases pass into the filter unit and flow through a series of elements, dust particles and entrained reagent are captured on the elements, clean gases flow through to the induced draught fan and exhausted into the chimney. Removal of captured solids from the filter is by reverse jet action initiated by pressure sensors, the solid residue is discharged into a sealed skip. Ancillary equipment provided includes sorbent and activated carbon storage and transfer systems.

ash removal
Integral ash ram, hydraulically operated and automatic in operation together with ash treatment zone allows for automatic ash removal on completion of the combustion and cooling cycle. Ashes may be discharged directly into sealed skips compatible with road transport vehicle or conveyed to remotely located skips.

heat recovery
Waste heat recovery boiler designed to generate hot water or steam is located between the outlet from the secondary combustion chamber and the gas cleaning system to recover energy from the hot incineration gases and reduce the gas temperature to be compatible with the gas cleaning system. Should there be no demand for energy recovery, the gases will be cooled using a heat exchanger system with air blast cooling heat dissipator.

Emission standards

Emission

Maximum concentration limits

UK EPA PG5/1 (95) and / or IPR 5/2

Particulates

30 mg/m³

Organic compounds

20 mg/m³

Carbon monoxide

50 mg/m³ daily average -
100 mg/m³ half hourly average

Nitrogen dioxide

350 mg/m³

Sulphur dioxide

300 mg/m³

Hydrogen fluoride

2.0 mg/m³

Hydrogen chloride

30 mg/m³

Cadmium

0.1 mg/m³

Mercury

0.1 mg/m³

Heavy metals

1.0 mg/m³

Dioxins furans TEQ

1.0 mg/m³

Note :-
(i) Heavy metals total of arsenic, chromium, copper, lead, manganese, nickel and tin.
(ii) Concentrations expressed at 273ºK, 101.3Pa, 11% O2 dry gas.

Clinical 1-5 incinerator Clinical 1-5 incinerator


Pyrotec
model

Capacity

Boiler output

Kg/Hr

KCal/Hr

Hot water KW

Steam Kg/Hr

C150

150

600,000

650

1,000

C250

250

1,000,000

1,050

1,650

C500

500

2,000,000

2,100

3,250

C750

750

3,000,000

3,150

4,900

C1000

1,000

4,000,000

4,200

6,500

Note :-
Burning capacities are based on waste having a calorific value of 4,000 KCal/Kg.
Our specifications are subject to alteration due to our continuous product improvement policy.