Revati II

With the goal of increasing processing capacity from 3.5 to 6.0 million tons of sugarcane, Shree Renuka Sugar resumed, for its Revati unit in Brejo Alegre - SP, the project of the second boiler at this plant, with a capacity of 380 t/h of steam.

In the pursuit of maximizing power generation, this new boiler will operate at 100 bar pressure and 530 °C temperature.

This unit already has an HPB technology boiler, producing 320 t/h of superheated steam at 490 °C and 67 bar pressure.

Technical Features

Natural circulation boiler, supported by a steel structure, vertical furnace with membrane walls, single drum, convection bank with smooth superheater tubes of radiant/convective type, designed to ensure steam outlet temperature stability in the range of 75 to 110% of the boiler’s continuous capacity.

The feeding system has dosing feeders specially designed to handle a high percentage of sugarcane leaves mixed with bagasse, and combustion takes place preferably in suspension, with a dual-drive rotary grate for continuous ash discharge.

Two economizers, interspaced with three air preheater modules, are responsible for recovering heat from combustion gases after exiting the boiler.

A gas scrubber of the low pressure venturi type ensures a low level of particulate emissions, with reduced circulating water consumption.

Location: Brejo Alegre - SP - Brazil

Operation: May 2012

Boiler Technical Data:

• Technology and Engineering: HPB Engenharia e Equipamentos Ltda | B&W

• Maximum Steam Flow: 380,000 kg/h

• Steam Operating Pressure: 100 bar

• Final Steam Temperature: 530 °C

• Main Fuel: Sugarcane bagasse with average moisture of 50%

• Boiler Thermal Efficiency: 87.0% (LHV basis)

• Guaranteed Emissions: CO: < 200 mg/Nm³ | Particulates: < 200 mg/Nm³ | NOx: < 300 mg/Nm³