Sep 21, 2012
Manufacturer launches new coal-fired boilerBack
Africa|Bosch Partnership|Bosch Thermotechnology|Cleaning|CoAL|Components|Design|Dryden Combustion|Pumps|Shell|Systems|Water|Africa|South Africa|Cleaning|Energy|Equipment|Service|Systems|Gordon Slater|Power|Sue Kiley|Water
© Reuse this
Two of these boilers will be installed in the Cape later this year.
“The new Dryden Mk7 coal-fired boiler is a welcome alternative to an industry that has had limited options to date,” says Dryden Combustion MD Gordon Slater.
He claims that, for more than 20 years, there has been only one main supplier of coal-fired boilers in South Africa and that the Dryden Mk7 will create competition in the market.
The boiler has outputs ranging from 1 000 kg/h to 21 000 kg/h and features operating pressures of up to 2 000 kPa.
“The Dryden Mk7 comprises a fully wetback range of coal-fired boilers. It is a modern, efficient unit, with a three-pass shell-boiler design, coal-fired with a fully water-cooled combustion chamber. The twin-flue boilers have separate walker-type combustion chambers, allowing single flue firing.
“A variety of models are available and manufactured under the supervision of an approved third-party inspection authority,” Slater says.
The Dryden Mk7 has a specially developed, high-efficiency low-power induced draught fan, with curved and radially tipped blades for minimum fly-ash build-up.
“The fan and impeller are statically and dynamically balanced for smooth operation in service.
“The boiler output is affected by the change in the calorific value of the fuel. The burning of fibrous fuels can also be accommodated,” says Dryden Combustion director Sue Kiley.
She explains that the Dryden Mk7 is fitted with a chaingrate stoker, with wide links for improved combustion performance.
“As it is one of the hardest worked components of any shell boiler, the stoker has a rugged design. Combustion air is provided by balanced draught equipment, which can be controlled by either a single-lever control unit or as an optional extra through a solid state-type electronic controller.
“These devices correctly adjust the induced draught dampers, forced draught damper and stoker motor speed for the most efficient combustion conditions.
She further explains that soot-blowing equipment is fitted as a standard feature to lengthen the intervals between tube cleaning and extend boiler activity in service.
“The control panel contains all the associa- ted electrical equipment and can be mounted on the boiler subframe, in accordance with the packaged boiler concept,” Kiley notes.
“We also offer the latest available technology for new boiler control systems, optimising combustion efficiency, saving energy and reducing air and noise pollution,” Slater adds.
“Bosch Thermotechnology manufactures more than 1 500 boilers a year. We have already received an order for a 20 000 kg/h, 30 bar gas-fired Bosch boiler, fitted with Hamworthy low-nitrogen-oxide, high- efficiency burners. The boiler will be delivered later this year,” Slater states.
Edited by: Chanel de Bruyn© Reuse this Comment Guidelines (150 word limit)
Other Heating and Cooling News
Germany-based refrigeration company KTI-Plersch Kältetechnik announced last month that it received a large order to cool a South African gold mine with a surface ice system, which will be used to cool the two-kilometre-deep mine and will provide a total capacity of 8...
The governate of the Vatican City State and heating, ventilating and air conditioning (HVAC) technology company Carrier announced the start of the installation of a landmark HVAC system for the Sistine Chapel, in the Vatican, in June, which is specially designed to...
Johannesburg-based air-conditioning solutions provider Fourways Airconditioning is supplying heating, ventilation and air conditioning (HVAC) equipment to private hospital chain Netcare’s Polokwane hospital, in Limpopo. The project is expected to be completed by the...
Recent Research Reports
Defence 2014: A review of South Africa's defence industry (PDF Report)
Creamer Media’s Defence 2014 report examines South Africa’s defence industry, with particular focus on the key participants in the sector, the innovations that have come out of the sector, local and export demand, South Africa’s controversial multibillion-rand...
Road and Rail 2014: A review of South Africa's road and rail infrastructure (PDF report)
Creamer Media’s Road and Rail 2014 report examines South Africa’s road and rail transport system, with particular focus on the size and state of the country’s road and rail network, the funding and maintenance of these respective networks, and the push to move road...
Real Economy Year Book 2014 (PDF Report)
This edition drills down into the performance and outlook for a variety of sectors, including automotive, construction, electricity, transport, steel, water, coal, gold, iron-ore and platinum.
Real Economy Insight: Automotive 2014 (PDF Report)
This four-page brief covers key developments in the automotive industry over the past 12 months, including an overview of South Africa’s automotive market, trade figures, production and the policies influencing the sector.
Real Economy Insight: Construction 2014 (PDF Report)
This five-page brief covers key developments in the construction industry over the past 12 months. It provides an overview of the sector and includes details of employment in the sector, infrastructure and municipal spending, as well as insight into companies’...
Real Economy Insight: Electricity 2014 (PDF Report)
This five-page brief covers key developments in the electricity industry over the past 12 months, including details of State-owned power utility Eskom’s generation activities, funding and tariffs, independent power producers and prospects for the sector.
This Week's Magazine
Integrated energy and chemical company Sasol has partnered with Unisa Graduate School of Business Leadership (SBL) professor and founder and CEO of PanAvest Partnership Dr Douglas Boateng to publish a series of books on executive supply chain management aimed at...
The World Wide Fund for Nature’s (WWF’s) 2014 Living Planet Index (LPI) indicates that there has been a 52% decline in vertebrate species since 1970. The Index tracked the trends of 10 000 discrete populations of over 3000 vertebrate species between 1970 and 2010.
Rwanda has joined a number of East African countries seeking to import electricity from Ethiopia as its demand grows. After it became apparent several generation project it is implementing will not come on stream early enough, now plans to import 400 MW from Ethiopia...
Metrorail’s first new passenger train will arrive in November next year, says Passenger Rail Agency of South Africa (PRASA) CEO Lucky Montana. “Next year we will be able to put our hands around the infrastructure and equipment we have been talking about for so long.”
The Competition Commission has launched an investigation into what it says are “price fixing, market division and collusive tendering in the market for the manufacture and supply of automotive components to original equipment manufacturers” (OEMs, or vehicle...
Next ArticleTemperature control company makes headway in Africa