Pulp Paper & Logistics


PROJECTS & CONTRACTS 29


Bracell orders pulp technology for its Star project in Brazil


technologies and key process equipment have been ordered from Andritz by Bracell for its new mill in São Paulo province, Brazil. Start-up of the Star project


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at Lençóis Paulista (formerly Lwarcel), which will increase the mill’s production capacity from 250,000 tonnes to 1.5 million tonnes a year, has been scheduled for the third quarter of 2021. The contract was revealed by the Austria-based technology group last July, but the customer was not mentioned. Four of the six most important


process islands in the pulp mill will be supplied by Andritz, and will be supplied on Engineering, Procurement, Construction and Civil Construction (EPCC) basis: ● A complete wood processing plant including chipping


nergy-efficient and environmentally- friendly pulp production


lines, stacker-reclaimer, chip screening, biomass handling with BioCrushers, and biomass storage. Each chipping line for eucalyptus processing consists of a horizontally fed HHQ-Chipper (EXL model), ensuring high capacity without compromising on chip quality. Woodyard operation is enhanced with IIoT products, including ChipperEKG, stone detection, the ScanChip chip analyzer and a FlowScanner, which measures the density and moisture content of the chips to optimise the fibreline process. ● A Herb recovery boiler running a pressure of 101 bar and temperature 515 deg C to maximise power generation. The recovery boiler features energy- efficient flue gas cooling and feed water preheating technologies to maximize steam production for power generation. It is designed for extended operating periods without requiring wash water. At the beginning of December 2019,


Andritz successfully completed assembly of the first recovery boiler column. ● Hardwood fibre lines that ensure low-effluent emissions, can produce both kraft and dissolving pulp, and which also include a chip feed system, LoSolids continuous cooking system with Pre-Hydrolysis Vessel (PHV), screen room and bleach plant, as well as DD- Washer technology, that is said to provide low operating costs, low emissions, extremely high washing efficiency, and excellent fibre quality. ● An EvoDry pulp drying system based on the high-capacity Twin Wire Former technology, with airborne dryers, cutter-layboy and baling lines. The approach flow with cleaner systems ensures homogeneous pulp feed to the subsequent process stage for both types of pulps – dissolving and kraft. The pulp dewatering machine comprises


Bracell’s Star project at Lençóis Paulista in Brazil is expected to start up in the third quarter of 2021


a headbox with dilution control, a Twin Wire Former, and a press section with one combi-press and two shoe presses. In addition, the EvoDry sheet dryer is the most energy-efficient of its kind. Finally, the reliable cutter-layboy provides the pulp bales to be further processed in the high- capacity baling lines, where the final pulp bale units are produced. Bracell is one of the largest speciality cellulose producers in the world and has operated in Brazil for 15 years. The company has its main operations in Bahia Specialty Cellulose in Camaçari, Bahia and in Lençóis Paulista. By the time the expansion project is completed in 2021, Bracell will have an annual production capacity of two million tons of dissolving pulp.


January/February 2020


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