Klabin

Acid Plant Database November 26, 2023

Owner	Klabin S.A.
Location	Fazenda Apucarana Grande, S/Nº Distrito de Natingui Zip code 84350-000 Brazil
Background
Website	www.klabin.com.br
Plant	Ortigueira site
Coordinates*	24° 14' 40" S, 50° 44' 35" W (site)
Type of Plant	WSA
Gas Source	Concentrated Non-Condensable Gases (CNCG) Elemental Sulphur
Plant Capacity	150 MTPD
SA/DA	SA
Emissions
Status	Operating
Year Built	2022
Technology	Haldor Topsoe
Contractor	Andritz Oy
Remarks
Pictures
General
References	Going Full Circle - Sulfuric Acid Production for Puma I and II
News	October 10, 2022 ANDRITZ sustainable technologies enable production of commercial-grade sulfuric acid from the mill's odorous gases, making the mill self-sufficient in sulfuric acid The plant is part of the ANDRITZ CircleToZero product portfolio that focuses on eliminating unused side streams, creating new added-value products and laying the foundation for zero emissions and zero waste production Klabin has successfully started up a sulfuric acid plant supplied by ANDRITZ at its Ortigueira/PR plant in Brazil. The plant is a world first and has the capacity to produce 150 tons of commercial-grade sulfuric acid per day from concentrated odorous gases and elemental sulfur. It serves the pulp lines at Klabin's Puma Unit and makes the site completely self-sufficient in sulfuric acid by recycling sulfur from the waste streams.The sulfuric acid plant helps Klabin to control the sodium and sulfur (Na/S) balance and also the sulfidity of the mill. In addition, less sulfate will now be discharged due to the optimized Na/S balance, hence improving the efficiency of input use at the Ortigueira plant. Furthermore, there is no need in future to transport hazardous inputs such as sulfuric acid to the plant and the unit also optimizes resources overall, with a large reduction in transportation volume. As the sulfuric acid plant meets stringent air emission limits, the process significantly improves the overall footprint of the Ortigueira mill. Klabin's Director of Projects and Engineering, João Antônio Braga, says "Operation of the sulfuric acid plant at the Puma Unit, Ortigueira, represents a significant advance in the circularity of the installation. The new plant allows the Puma Unit to be self-sufficient in sulfuric acid, with the additional option of selling any excess production to the market. This innovative technology, a first in this industry worldwide, supports our efforts to optimize productivity and is an important milestone in our ambition to achieve our sustainability goals." Klabin's Manager of Projects, Recovery and Utilities, Walter de Oliveira, adds "The quality parameters are being met and the sulfuric acid is being used successfully in several operations at the plant, replacing the commercial acid we were using before. Besides optimizing resources, installation of the plant brings greater independence because we do not have to rely on an external supplier for our sulfuric acid needs." The ANDRITZ scope of supply included technologies on EPCC basis for handling elemental sulfur, combustion of sulfur and concentrated non-condensable gases (CNCG) to form sulfur dioxide (SO₂), and conversion of sulfur dioxide into concentrated sulfuric acid, as well as a flue gas treatment system. Sulfuric acid plants are part of the company's CircleToZero initiative, which includes technologies that aim to reduce and/or eliminate waste from pulp mills. This global initiative for pulp and paper customers brings the continuous development and improvement of existing ANDRITZ technology solutions together with an ambitious, future innovation goal: to eliminate unused side streams, create new value-added products, and establish a foundation for zero emissions and zero waste production. May 19, 2021 - Klabin is building at the Puma II Project, together with the new packaging paper production line in Ortigueira, Paraná, the first ever sulfuric acid plant integrated to a pulp and paper mill in Brazil, which will make the unit self-sufficient in producing the acid. Supplied by Andritz, the plant will reuse the residual gases from the wood cooking process to transform them into sulfuric acid, which will be used during the production of pulp and paper at the mill. Sulfuric acid is one of the main raw materials of a pulp mill. “Construction of such a plant means intelligently using the sub-products generated throughout the production chain as economically viable and ecologically sustainable products, thereby adding value to our production,” says Walter Oliveira, project manager at the Recovery & Utilities area in Klabin. Sulfuric acid is used in several components of the production process, such as drying machines, the tall oil plant and fiber lines, among others. This new technology, besides being aligned with the sustainability that Klabin seeks to implement in all phases of the process using environmentally responsible technologies, also enables cost reduction through inhouse production of sulfuric acid. The plant will be the first of its kind worldwide and is designed to produce 150 tons of commercial-grade (>98%) sulfuric acid per day from concentrated odorous gases and elemental sulfur. It will serve Klabin’s Puma I and Puma II pulp lines at Ortigueira once completed and make Klabin’s Ortigueira site completely self-sufficient in sulfuric acid. ANDRITZ will supply technologies on EPCC basis for elemental sulfur handling, sulfur and Concentrated Non-Condensable Gases (CNCG) combustion to form sulfur dioxide (SO2), sulfur dioxide conversion into concentrated (98% by wt.) sulfuric acid, and a flue gas handling system. The sulfuric acid plant uses wet-gas sulfuric acid (WSA) technology developed by Haldor Topsoe. The WSA technology has been proven in more than 150 references in many industries. Once the sulfuric acid plant has been started up, it will help Klabin to control the sodium and sulfur (Na/S) balance and the sulfidity of the mill. Also, the resource efficiency of the Ortigueira site will be improved because less sulfate needs to be discharged due to the optimized Na/S balance, there is less truck traffic to the mill due to the chemical savings, and there is also less hazardous truck traffic because sulfur is transported in solid form and not as an acid. The sulfuric acid plant meets very strict air emission limits and does not produce any waste streams. The technology used for this plant is based on ANDRITZ’s self-developed A-Recovery+ concept that enables pulp mills to extract side streams from the pulping process and turn them into commercial-grade products/commodities. ANDRITZ recently completed successful start-up of the world’s first methanol purification plant based on the A-Recovery+ concept. A-Recovery+ now also offers solutions for the treatment of odorous gases in the pulp and paper industry as well as for production of sulfuric acid from these gases.

MTPD - Metric Tonne per Day STPD - Short Ton per Day
MTPA - Metric Tonne per Annum STPA - Short Ton per Annum
SA - Single Absorption
DA - Double Absorption

* Coordinates can be used to locate plant on Google Earth


Sulphuric Acid on the Web^TM	Technical Manual	DKL Engineering, Inc.