The pulp and paper industry in India historically constituted of small to medium players with pulp mill capacities below 250 TPD. Over the past five decades, Hindustan Dorr-Oliver has contributed immensely to the modernization of these pulp mills by providing cost effective solutions to our clients.

HDO was the first company to indigenously manufacture vacuum drum filters used for brown-stock washing and bleach washing. HDO pioneered countercurrent washing and changed the industry from batch to continuous pulp washing, reducing the downtime and improving the productivity of pulp mills. Our Continuous Recausticising Systems have become the standard throughout the industry for performance and productivity.

We offer our clients the complete range of process and equipment required for any type of pulp mill.

Wet Cleaning System: is a process used for efficient washing of agro-based raw materials and providing maximum recovery of water. We have supplied these systems to Yaslik Paper Mill and ABC Paper Mill.

Continuous Digester System: Diminishing availability of hardwood has forced major pulp producers to switch from hardwood to agro based raw materials like bagasse, wheat straw and rice straw. HDO has designed and developed the continuous digester systems to process these raw materials and provide consistent and uniform quality of pulp with reduced time and steam consumption.

This system has been supplied to Bhrikuti, ABC, Yaslik, Bindal, Mohit, Naini and Yash Papers and has surpassed the required performance guarantees.

Brown Stock Washing: HDO designs and supplies Brown-stock Washing Systems to handle variety of raw materials, pulping processes and capacities. HDO's introduction of ripple deck design provides huge savings in cost due to reduced caustic soda losses.

This system has been supplied to Yaslik, ABC, Century, BILT, TNPL, Yash, KR Papers among others.

Bleaching System: HDO's bleaching system complies with strict environment norms and is based on eco-friendly bleaching technologies like Elemental Chlorine-free (ECF) bleaching, Oxygen De-lignification (ODL) and Total Chlorine-free (TCF) bleaching. The TCF and ODL system was first supplied to Yaslik Paper Mill in Turkmenistan.

Recausticizing System: The Two-Stage De-silication Technology developed by HDO is very effective in Silica removal and reduces cost by enhancing the overall chemical recovery.

This state-of-the-art technology was supplied to major pulp mills like BILT, JK Paper Ltd, TNPL, West Coast Paper Mills & SPB Ltd.

Equipment: HDO manufacturers nearly all the equipment needed in the pulp mill in-house.