Esa Vihavainen

Title: Esa Vihavainen: Innovator in Recovery Boiler Technology

Introduction

Esa Vihavainen is a notable inventor based in Varkaus, Finland. She has made significant contributions to the field of recovery boiler technology, holding two patents that showcase her innovative approach to improving industrial processes.

Latest Patents

Esa's latest patents include a method for determining the reduction rate of a recovery boiler. This method utilizes optical information from a chemical smelt sample to accurately assess the reduction rate. A processor reads a digital frame that represents the chemical smelt sample, identifying an area of interest within the frame. By analyzing the pixel values in this area, Esa determines one or more spectral characteristic values that correlate with changes in the reduction rate. The reduction rate is then calculated using a function based on these spectral values, weighted by predetermined factors.

Another significant patent is for a combustion air system designed for recovery boilers that burn spent liquors from pulping processes. This innovative arrangement supplies an air jet form to the furnace, which features multiple walls and black liquor spraying devices. The design includes several air ports at different elevations to introduce air into the furnace effectively. Secondary air flows are arranged at various horizontal levels, enhancing combustion efficiency by projecting large and small air jets into the furnace.

Career Highlights

Esa Vihavainen works at Andritz Oy, a company known for its advanced technologies in the pulp and paper industry. Her work focuses on enhancing the efficiency and effectiveness of recovery boilers, which are crucial for sustainable operations in this sector.

Collaborations

Esa collaborates with talented coworkers, including Heikki Lappalainen and Juho Nurmi. Their combined expertise contributes to the innovative solutions developed at Andritz Oy.

Conclusion

Esa Vihavainen is a pioneering inventor whose work in recovery boiler technology has led to significant advancements in the industry. Her patents reflect a commitment to improving efficiency and sustainability in industrial processes.