From many years DSN DOLSIN produces Pall's Rings, Białecki's Rings and Raschig's Rings of plastic and metal.
It deals with plastics processing by making details on moulding
machines.
It produces electric beams for the automotive industry, household appliances and electrical equipment.
It offers customizing, packaging, welding, labelling and assembly services.
It prepares promotional sets.
It produces technical and industrial brushes, special brushes for individual orders, household brushes, haberdasher and home brushes, as well as and paint brushes.
It also deals with recovery of brushes for car washes, cleaning machines and other technical and industrial brushes.
DSN DOLSIN produces tools, dies, blanking dies, welding tools, assembly
equipment, pneumatic tools and provides other services connected with metalworking tools. It also provides punching and cutting services on impact and hydraulic presses.
DSN DOLSIN is a leading manufacturer of Pall rings, Bialecki's rings and Rashig's rings fillings, which are the supreme achievement in the field of column fillings.
Pall's rings, Bialecki's rings, as the column fillers are very widely used in the chemical, petrochemical, coke industries, in thermal power plants and general environmental protection, among others
in water treatment and sewage treatment technologies.
Pall's rings and Bialecki's rings are used:
• in absorption and desorption processes; • in rectification of continuous
and periodic liquid-liquid extraction;
• for direct condensation and cooling of gases;
• as a filler of demisters (splash heads) and air oil separators;
• for the separation of droplets and
oily waste water;
• as static mixers for liquids and gases;
• for air humidification;
• for air humidification;
• for the treatment of drinking water and boiler water, and in aerators;
• as a deposits in biological wastewater treatment plants for aeration of water and wastewater;
• for the reconstruction of the plate columns;
• to replace plates, disc distributors, Raschig's
rings in degassers and desorbers.
We produce fillings in two options:
option 1 - as single rings, designed to create cover
layers (unstructured form). This is the most commonly used form in the chemical, petrochemical industries, wastewater treatment plants and for drinking water and boiler water treatment.
option 2 - in the form of packages, formed
by ring welding (structured form) for any diameter and shape of the column, according to the parameters indicated by the customer. The use of the packages increases the efficiency of the column performance
by reducing the flow resistance and reducing energy consumption. In addition, the structured form facilitates the replacement and regeneration of the fillings.
Rings are made of materials such as: metals - various grades of steel, copper, aluminium, titanium and others. plastics - polypropylene (PP), polyethylene (PE), polyamide (PA), PVC and PVDF and of glass fibre reinforced materials such as POLYFORT.
Pall's rings made of plastic:
- they are used in the processes of water treatment, in absorption, desorption processes in the impassable ranges of chemical resistance
and thermal resistance.
Available sizes of Pall's rings made of plastic: Ø35, Ø50
Pall's rings made of metal:
- they are used in high temperatures, in general metabolism processes, in the treatment of hot exhaust gases, in environments that require
resistance to high temperature differences in combination with aggressive working environment.
Available sizes of Pall's rings made of plastic: Ø25, Ø35
Białecki's rings made of plastic:
- they are used in the processes of water treatment, in absorption, desorption processes in the impassable ranges of chemical resistance
and thermal resistance.
Available sizes of Białecki's rings made of plastic: Ø25, Ø80
Białecki's rings made of metal:
- they are used in high temperatures, in general metabolism processes, in the treatment of hot exhaust gases, in environments that
require resistance to high temperature differences in combination with aggressive working environment.
Białecki's rings are the original column fillings of a openwork and plate construction
allowing to achieve the highest performance of the columns. Compared to other types of Białecki's ring fillings, the results are much higher, as confirmed by the laboratory and industrial tests.
Available sizes of Białecki's rings made of plastic: Ø12, Ø25, Ø35, Ø50, Ø80
Rashig's rings made of metal:
- they are used in high temperatures, in general metabolism processes, in the treatment of hot exhaust gases, in environments that
require resistance to high temperature differences in combination with aggressive working environment.
Available sizes of Rashig's rings made of plastic: Ø12, Ø25, Ø35, Ø50, Ø80