CBC supplies biomass boiler to Suzano

By Erin Voegele | June 14, 2012

A Brazilian subsidiary of Japan-based Mitsubishi Heavy Industries Ltd. recently received an order for a high-capacity, high-performance biomass-fired boiler from Brazil’s largest pulp maker.  MHI wholly-owned subsidiary CBC Industrias Pesadas S.A. will supply the equipment to Suzano Papel e Celulose. According to CBC, the boiler will be installed at Suzano’s plant in Mucuri, Behia, where it will provide heat and power for pulp production. CBC noted in a statement that the boiler is scheduled to be delivered in early 2014.

Information released by CBC specified that the company has been supplying boilers since 1957, and has delivered several biomass boilers to the pulp and petrochemical industries in recent years. The boiler on order for Suzano will be the 101st boiler manufactured by CBC. Hideo Ikuno, media relations manager for MHI, further noted that MHI and CBC combined have supplied approximately 2,000 biomass boilers to members of industry

According to CBC, the boiler being manufactured for Suzano is specifically designed for biomass firing and has an evaporation capacity of 120 tons of steam per hour. Other biomass boiler units produced by the company have featured capacity to produce 150 tons of steam per hour.

Ikuno said there are several features that make CBC’s boilers uniquely suited to biomass firing.  MHI and CBC each have unique fluidized bed combustion technologies, which fully adapt to emissions regulations for sulfur oxides (SOx) and nitrogen oxides (NOx) without supportive equipment, such as flue gas desulfurization (FGD) or selective catalytic reduction (SCR) units, he said.

According to CBC, the Suzano boiler will adopt CBC’s proprietary bubbling fluidized bed (BFB) technology and enables high-efficiency combustion of biomass components produced in association with pulp production. Some examples include timber from forest thinning, bark and scrap wood.

Suzano’s order also includes peripheral equipment. Under the contract, CBC will supply the combustion system and electrostatic precipitator. According to CBC, it will also handle transportation of the boiler and equipment, dispatch of instructors and test operation.

Information published to CBC’s website noted that biomass boilers supplied by the company are vertical units, with either pressurized furnace for forced draft. The units have an evaporation capacity of up to 500 tons per hour and a design pressure of up to 120 kilograms per square centimeter. In addition, CBC said that the units can produce steam temperatures of up to 540 degrees Celsius.

Regarding future interest in biomass boilers, Ikuno said he thinks demand will increase. He attributes growing demand to the increase of eco-awareness. He also noted that he expects CBC to expand its boiler business mainly within the developing Brazilian market.