Honeywell Introduces Advanced Thermo-Mechanical Pulping Solution | Automation.com

Honeywell Introduces Advanced Thermo-Mechanical Pulping Solution

February 082005
Solution Helps Cut Raw Material Costs, Optimizes Operations, Produces Higher Quality Paper

MONTREAL, Feb. 8, 2005 - Honeywell (NYSE:HON) introduces the Advanced thermo-mechanical pulp (TMP) Solution for pulp and paper manufacturers. With this solution, manufacturers can replace more expensive chemical pulps to reduce raw material costs and increase profitability and competitiveness.

"Global pulp and paper producers face an increasingly competitive market environment driven by rising raw material costs, escalating energy costs, increasing product quality requirements and pressure to utilize production capacity by manufacturing new value-added paper grades," said Jarmo Kosunen, pulping segment marketing manager, Honeywell Process Solutions. "The Honeywell thermo-mechanical pulp solution is opening doors for many pulp and paper manufacturers, and helping them compete in ways they couldn't before."

The TMP solution employs a two-level control strategy with Honeywell Profit® Controller to simultaneously stabilize and optimize refining processes. The modular controller design can easily handle multiple refiner lines, which can be manipulated independently without causing variation in the process. This improves both pulp quality and paper machine operations, and reduces energy and kraft usage. It also offers the possibility of producing higher quality paper grades, such as light weight coated (LWC) and supercalendered A (SCA) paper.

At a North American TMP mill, this new solution reduced motor load by 53 percent and consistency variations by 86 percent. Profit Controller helped reduce power consumption by 2 percent and kraft consumption by 30 percent. Thanks to its closed loop quality control, the TMP solution decreased pulp freeness variability by 41 percent and mean fiber length variability by 21 percent. This resulted in more than a million dollars of increased profitability for the mill in the first year.

Honeywell's TMP solution provides supervisory control and optimization of the complete pulping and bleaching operation as well. It first stabilizes the refining process for uniform pulp quality and then optimizes pulp quality parameters. The solution controls key refiner line process variables such as motor load and blow-line consistency to stabilize the refiner line operations.

The TMP solution helps stabilize refiner operations and minimize product variability, allowing maximum production with optimal product properties. Refiner feed rate, plate position and consistency control and minimize the variability of power consumption. Programmed start-up and shutdown sequences provide maximum equipment availability with minimum process upsets and optimal plate life.

The solution also optimizes operations by controlling production through the screens while maintaining screening efficiency. A production-to-control reject rate controls screen pressure drops and rejects flows. Operators constantly monitor screen conditions so they can take immediate action if constraints are exceeded. For example, at the onset of a blinding, the screen will automatically clear. This allows manufacturers to optimize production and achieve target reject rates with minimal screen upsets.

Once the refiner line has been stabilized, Honeywell's TMP solution maintains the final pulp quality within the operator-specified quality window. It uses Profit Controller, a multivariable model-predictive range controller to regulate the refiner line operations. Profit Controller provides control and economic optimization of processes that have significant interaction between variables such as freeness and fibre length. The controller incorporates a model of the refiner lines and determines how to adjust the controller's output to bring all process variables to the desired setpoints within constraints.

If there are any degrees of freedom remaining, the controller adjusts the process to optimize operations. This control strategy leverages the natural decoupling in the process. The modular design technique is able to handle multiple refiner lines that empty into a common latency chest. A global optimizer is also used to integrate and coordinate the two layers for enhanced constraint handling.

Honeywell International is a $26 billion diversified technology and manufacturing leader, serving customers worldwide with aerospace products and services; control technologies for buildings, homes and industry; automotive products; turbochargers; and specialty materials. Based in Morris Township, N.J., Honeywell's shares are traded on the New York, London, Chicago and Pacific Stock Exchanges. It is one of the 30 stocks that make up the Dow Jones Industrial Average and is also a component of the Standard & Poor's 500 Index. For additional information, please visit www.honeywell.com. Honeywell Process Solutions is part of Honeywell's Automation and Control Solutions group, a global leader in providing product and service solutions that improve efficiency and profitability, support regulatory compliance, and maintain safe, comfortable environments in homes, buildings and industry. For more information about Process Solutions, access www.honeywell.com/ps.

Back to top
Posted in:
Industry

MORE INDUSTRY NEWS

VIEW ALL

RELATED