World debut for technology in Dongguan Jianhui’s new pulping line

Dongguan Jianhui

Paper in China has successfully started up a new mechanical pulping line supplied by Andritz including the world’s first TwinFlo Prime refiner.

The newly-developed TwinFlo Prime optimises the pulp flow to each refining zone by means of improved refining gap adjustment. This is said to reduce wear on the refiner plates and results in longer plate life and lower maintenance cost.

“We are very proud to be the first ones on the market with such innovative technology,” said Li Guihua, president of Dongguan Jianhui Paper. “With the TwinFlo Prime and the new mechanical pulping line from Andritz we have reached a very high level of flexibility both in the use of raw materials and the fibre quality produced. This will help us further expand our board business. The installation perfectly meets our strategic targets.”

The pulping line, which has been installed at Dongguan Jianhui’s mill in Dongguan City, Guangdong Province, is based on Andritz ’s patented P-RC APMP process. At a design capacity of 600 tons per day, it processes eucalyptus wood chips for production of a range of top-quality board grades. The focus of the system is on chip impregnation and refining (HC and LC) with the highest production efficiency and welldeveloped fibres at low energy consumption.

Dongguan Jianhui Paper, founded in 2002, runs four paper making lines and specialises in the manufacturing of highquality white coated duplex board with gray back and test liner.

Following its entry to the tissue industry in 2021, MG TEC Industry in Romania has started up a second Andritz tissue line at its Dej mill.

Dorin Mocan, chief executive of MG TEC Industry, commented: “Energy-efficient production and perfect end-product quality: those were our key targets and together with Andritz we achieved them. I am proud to hold the first tissue in my hands now.”

The turnkey order included a PrimeLineCompact tissue machine, a complete stock preparation system, pumps, automation, hall ventilation, and electrical systems.

The stock preparation system includes an approach flow system and broke handling. TwinFlo disc refiners lead to optimum development of fibre properties, and the ShortFlow concept enables fast grade changes and high flexibility. The 2.85m-wide tissue machine has a design speed of 1,900 metres per minute.

The start-up in November 2022 of the world’s largest kraftliner machine, SCA’s PM2 at the Obbola mill in Sweden was facilitated in part with commissioning training provided by Voith’s Papermaking Academy, and comprehensive documentation.

“A key factor to the successful start-up here in Obbola has been the training given to the employees,” says Lisa Lundström Hämälä, Process Engineer at SCA. “Voith prepared extensive training materials, and Voith and SCA together made sure there were several occasions for each training so employees could attend while also running our old, now closed paper machine.”

With the Papermaking Academy, Voith offers target group-specific training programmes and courses that cover the entire life cycle of a paper machine and the plant’s components.

More information from: www. voith.com/papermakingacademy