Cellulose derivatives & starch

Efficiently gaining natural raw materials of high quality

Cellulose derivatives

Top quality

No matter which derivative you produce, such as methyl, micro or carboxymethyl cellulose – when it comes to filtration and washing, our filters offer you comprehensive advantages compared to other technologies. Highest product quality, maximum yield and efficient use of resources characterize our machines.

Efficient separation of salt

For cellulose derivatives – especially those soluble in water – the rotary pressure filter (type RPF) proves to be superior to traditional alternatives such as centrifuges. The rotary pressure filter facilitates cake treatment in several separate steps in a single system. The machine is compact and the temperature range can be set with great precision. Filtration and washing take place without the products gelling; the filtrate is free of solids and delivers a particularly high yield.                     

After separation of the mother liquor and filter cake, displacement washing is carried out in several steps. Salt can thus be efficiently removed from the filter cake. Thanks to its perfect piston flow, the rotary pressure filter offers effective penetration by the washing agent. Even though only minimal amounts of washing agent and water are required, the process stands up to the highest quality standards.

Benefits at a glance:

  • Continuous production
  • High product quality and yield
  • Minimum consumption of washing agents and solvents
  • Maximum safety

Minimum use of solvents


Minimum use of solvents

Our filters also enter the picture when top product quality and efficiency in the filtration process is required in the production of cellulose derivatives in solvents. Besides the rotary pressure filter, our indexing belt filter (BF) is also used in the production of cellulose derivatives. For every single application, we strive to achieve the optimum ratio of detergent concentration and filter size, thus enabling the safe production of high-purity derivatives while keeping solvent consumption as low as possible. Contact us.


Consistently high quality

In the production of modified starch, the rotary pressure filter is suitable for filtration, washing and drying. Processing takes place continuously in a closed system. This ensures consistently high quality and residual moisture of the end product. The unique pressure-based continuous filtration method of the RPF from BHS facilitates highly efficient and safe production, especially for demanding starch types.

Benefits at a glance:

  • Closed system
  • Consistently high quality and residual humidity
  • Highly efficient and reliable production process

Our filters in use

Rotary pressure filter (RPF)

A single rotation of the drum entails a number of different process steps, demonstrating the many facets of filtration.

Indexing belt filter (BF)

This type of vacuum filter is particularly gentle on sediments.

Tests give certainty

Which technology is the right one for your process? Don’t leave anything to chance. Based on your specifications, we carry out testing and identify the best solution for you in our filtration laboratory.



14.06.-18.06.2021 | Frankfurt am Main (Germany)
Hall 5, Booth C34

Satisfied customers worldwide


Find a sales representative

Find your personal contact person on site. We are there for you worldwide.

Find a sales representative

Find your personal contact person on site. We are there for you worldwide.