M/K ASME & CE Certified Laboratory Pulp Digesters

Modern Digesters

The Most Precise Laboratory Digesters Available

M/K Systems Inc. offers the most precise laboratory pulp digesters available. Each system has a patented liquor mixing module, an anti-turbulent tubing design, and high-speed pumps give you the best liquor/chip interaction available.   We have options that allow you to easily and safely inject additives during your cook.  Rent or purchase our high-pressure pulp digesters for all of your cooking needs.  The digester is easy to use, safe, and reliable.  Use our systems for kraft cooks, sulfite cooks, bleaching, cooking with additives, etc.   Other materials customers investigate include Arundo Donax, industrial hemp,
and hop residuals in kraft cooks,
 as well as low temperature organosolv pulpin   M/K digesters employ our patented deisgns (patent #s US 7, 811, 416 and US 8, 172, 984.  Other patents are pending).

Digester profile

What Makes Our Product Stand Out

Our patented technology employs a liquor circulating system with both liquor and vapor sensors, triple insulation, excellent system temperature control, and many other redundant safety features.  No other digester can match our device’s precison.  Our patented liquor module optimizes chip-liquor interactions.

With the M/K Digester you will obtain precise cooking results. As of 2019, our 20-liter vessel systems heat to 175°C from room temperature within 40 minutes, whether you are cooking by H-factor or traditional temperature/time segments.

Additionally, the liquor temperature control is typically +/ 0.1°C for our modern systems. Our latest rapid cooling technology cools quickly enough so that operators can run several cooking cycles per day.  Each M/K Digester includes a sampling condenser for extracting black liquor at high temperatures.

Some of our industry references include:

1.   Shell Oil, US patent 9,527,788, "Methods for hydrothermal digestion of cellulosic biomass solids in the presence of a distributed slurry catalyst".

2. (United States),“Composition for the production of Improved Pulp”, Patent # US 6,890,404.
3. (United States),“Phenols as Additives in Kraft Pulping”, Patent Application Publication US 2019/0112757.
4. (United States), “Controlled Flocculation of Lignocellulosic Hydrolyzates”, Publication US 2016/0083808
5. (Canada), “Method for obtaining cellulose from biomass comprising lignocellulose”, Canadian #
6. (Australia), Liquid co-extraction process for production of sucrose, xylo-oligosaccharides and
xylose from feedstock, Australian Pat. App. AU 2015252695 B2, World Wide Application # 2015/164948 Al.
7. (United States), “Tobacco-derived cellulose material and products formed thereof”, Patent # US
8. (United States), “Method to separate lignin-rich solid phase from acidic biomass suspension at an
acidic pH”, Patent # US 9,751,781.
9. (International Application),”Composition for inhibiting calcium salt scale formation”, Patent Application
AU 2,010,224,861.
10. (Portugal), “Method and aqueous composition for the production of improved pulp”, Patent # PT
11. (United States), Publication: “Comparison of Oxidative Alkaline Extraction Reaction's Impact on Pulp
Properties and the Environment”. T.M. Runge and A.R. Ragauskas, Int’llPulp Bleaching Conference.
Helsinki, Finland

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Some of the typical cooking materials include:

  • Wood Pulp

  • Bamboo

  • Bagasse

  • Numerous Bio & Cellulose cooking applications

Contact Us

Get in touch with us today for more details! Our personnel will be glad to answer your inquiries.