Injection of methanol for the reduction of hydrate formation and Pipeline Corrosion

Oil and Gas Industry case study
ITC  /   Industrial processes  /   Injection of methanol for the reduction of hydrate formation and Pipeline Corrosion

Context

Our client was looking to inject methanol, used in Oil and Gas Industry to prevent the corrosion in pipelines where hydrate formation occurs at low temperatures.

Hydrate formations occur when water and natural gases encounter a combination of low temperatures and high pressures, which if not addressed can lead to the corrosion of pipelines, the formation of slurries and crystallisation which can clog pipework and process equipment such as valves and process instrumentation.

They want to install a new injection package to an unmanned offshore platform located in the North Sea and wanted to protect the existing pipework and ensure that the pipeline was shielded from corrosion and kept well maintained.

The pipeline was operating at a pressure of over 250 Bar, and they required an ATEX dosing pump to inject Methanol into the system at over 250 Bar, which could be controlled remotely to alter output flow.

ITC Solution

Our British partner, North Ridge Pumps, selected for this propose our Tekdos Plunger Dosing Pump.

Built in Stainless Steel AISI 316 with high chemical resistance were the best option for this task. The plunger dosing pumps were built with all wetted parts in AISI316, and supplied with motors suitable for inverter operation to enable easy control over dosing flow rate. The 3 units were manufactured in only 12 days after the purchase order was placed.

Tekdos Plunger pumps are designed according to API675 standards, matching the accuracy required for continuous operation of +-1%, as well as the build requirements of API675.

Location
  •  North Sea, United Kingdom
Key points
  • Operation at a pressure of over 250 Bar
  • ATEX dosing pump requirement and continuous operation
  • Methanol injection resistant dosing pump
Equipment used
  • Tekdos FP: AISI316 piston dosing pump, max flow rate 940 l/h, max working pressure 370 bar.
    Tekdos FP