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Screw Pumps for asphalt in tank terminals and pipelines

One of the more used and traded commodities in the world is asphalt and similar varieties of asphalt. Way back in time tar pits in northern Alberta, Canada were used by the Athabasca Indians to seal and protect their canoes from water and the environment. Ever since those days asphalt under different names and appearances has widely used in infrastructural and industrial applications. The most typical examples are with paving of roads and driveways where asphalt after mixing with aggregate in a hot-mix plants provide a weather and wear resistant surface. Asphalt is also widely used in construction products from roof shingles and tarpaper to water proofing and sealing compounds.To get more news about screw pump stator, you can visit hw-screwpump.com official website.

As the world population keeps growing and people’s standard of living improves it is expected that demand for asphalt products will accelerate from building and facilities construction, and from road and transportation infrastructure improvements The increased demand will come from not just the industrialized world but will grow much faster in developing countries where the starting point is further back and there remains a lot of catch up to do. Additionally, there is an abundant supply available when users of heavy hydrocarbons like fuel in ships and power plants will turn to natural gas or renewables to comply with more restrictive emission standards.

Production, storage and distribution of asphalt products will follow the increasing demand, leading to more tank terminals, which in turn should encourage manufacturers of tanks, piping, insulation material, heaters and pumps. We will in this article focus on the pumping aspect and high-light the technologies which helps to improve efficient, safe and economical handling of asphalt products in pipelines and tank terminals.

The challenge of pumping asphalt

The generic name Asphalt used in the article should be understood to cover related or overlapping products such as Bitumen, Pitch, Residue, Tar or Asphalt Emulsion. They all have similarities and are derived from petroleum production either as products coming off the crude oil refining process or as raw bitumen direct from extraction or from mining.

The density of asphalt products is close to that of water and in most cases behaves as a Newtonian fluid which means its dynamic or flowing viscosity is related to temperature. However, some bitumen can appear as a non-Newtonian fluid which happens in emulsions with water and entrained air. It behaves contrary to a Newtonian fluid and agitation and shearing of the liquids will cause a change in dynamic or flowing viscosity.