GENERAL DESCRIPTIONS
COALMAC is a horizontal 3-pass fire tube packaged type coal-fired boiler designed to be extremely efficient, reliable and flexible under the most challenging operating conditions and robust both in design and construction. Stay tubes and stay bars are fitted to ensure that stressing of tube plates and tube nests are within construction code limits. The boiler is of welded construction throughout and is designed and engineered to the relevant China Boiler Code (equivalent to ASME Power Boiler 1992).

INSULATION/ CLADDING
The boiler body is covered with layers of high quality insulation materials and is protected with sheets of stainless steel outer cladding. The rear reversal chamber is internally covered by thick layer of castables and insulating materials are applied externally. High heat resistant paints are applied on other areas for finishing

CHAIN GRATE FRAME STRUCTURE
Factory assembled Chain grate. FULL-LENGTH design to allow more residence time inside the fire chamber for the coal to be completely burned. It is robust and sturdy both in design and construction. Its chain stoker is specially designed with very small distance in-between links to accommodate a wide range of Indonesian coal sizes from 50 mm and below. This is a dramatic improvement over other design that caters to bigger coal sizes of European standard. Combustion air passes through the special chain link with upward swirling motion that tremendously assists in combustion.

SPECIAL CHAIN LINKS

Chain links are made from specially casted high chrome cast iron. Link pins are made bigger and stronger than ever. The stoker is driven by a variable speed drive motor. A twin FULL-LENGTH stoker with modulating drive is provided for boilers with steam output of 15 tons and above.

TRANSPORTATION OF COALMAC BOILER

Shown here is the COALMAC 10 ton boiler shell on the low bed trailer, ready to be delivered to PT. Acidatama of Solo from Jakarta pier. Delivery weight is 38 ton without chain travelling grate assembly.

LIFTING AT THE JAKARTA PIER

COALMAC 5 ton boiler arrives at Jakarta pier being loaded onto the low bed trailer by crane. CMC-5 comes with the chain grate assembly already inserted to the Boiler Furnace.

CMC-10 OPERATING AT PT.

Beteen Textile Nusantara-BANDUNG Very compact in size, COALMAC CMC-10 shown here is operating in Bandung with 100% fine coal. Unit can be installed inside the existing building as it does not require special building structure.

ACCESSORIES OF BOILER

Access to the front smokebox is through hinged baffled doors designed for easy manual opening. Access to the fire chamber in times of servicing/shutdown is through the door at the rear reversal chamber. Access to various instruments/meters is through a series of ladders and gangways around the boiler. Picture shows shipment from Factory in China including all parts up to the ladders for easy and fastinstallation.

FOUNDATION CIVIL WORK

Picture shows foundation of CMC-10. Usually boiler will arrive about 45-60 days after placing official order while foundation civil work will take about the same time table.

SITE ERRECTION BY CRANE

two cranes of 40 ton each are used to lift COALMAC 10 ton boiler to lift from the tranler onto the foundation. Picture was taken during errection of PT. Acidatama, Solo.

MANUFACTURING CAPABILITY

Chairman of Hamada Boiler, Mr. Kazuhiro Hamada is standing in front of the on going pressure vessel of CMC-10 model in the Factory in China. Factory has sophisticated equipment for manufacturing various kind of boilers up to 100 ton/H high pressure of 60 bar.

MULTI CYCLONE DUST COLLECTOR

The package includes complete motorized ash discharge conveyor at the rear of the boiler. In addition, a cyclone dust separator is provided to trap small ash particles of 10 microns and above. Finally, a wet scrubber/water spray system is installed before the chimney to ultimately trap the dust particles that escapes from the cyclone separator. Final emission is guaranteed below the limit set by the environmental department of the Indonesian Government.