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Propietary Technologies

In an increasingly complex and volatile economic environment, in which markets and competition are global, TR maintains a firm commitment to the development of innovative technologies and knowledge generation as the principal drivers and guarantors of success in the medium and long term. At the technological level, the company’s strategy focuses on the development of new technologies, the consolidation of existing technologies and the diversification into new sectors and applications.


As a result, Técnicas Reunidas via its subsidiary company ESPINDESA and its Proprietary Technologies Development Division (DDTP) has a series of industrial plants, operating under their technologies.


Likewise, the development of discreet processes by the Heat Transfer Division and the Processes Department has served to consolidate Técnicas Reunidas position with basic engineering as one of its key products.

Fertilisers & Nitric Acid - ESPINDESA

ESPINDESA has more than 45 years’ experience accumulated in the licencing of Nitric Acid, Ammonium Nitrate and Fertiliser Technologies, including Environmental Emissions Control.

Over 60 industrial plants installed with our Proprietary Technology contribute to the continuous development of ESPINDESA´s.

ESPINDESALicensed Processes and Technologies:

  • Weak Nitric Acid (Dual Pressure and MonoPressure Processes).
  • Azeotopic Nitric Acid (68% Conc.).
  • Concentrated Nitric Acid (direct process or via Mg(NO3)2).
  • Ammonium Nitrate Solution.
  • Dense and Porous Ammonium Nitrate.
  • Calcium Ammonium Nitrate.
  • Ammonium Sulphate Nitrate.
  • NPK (using Urea, Ammonium Nitrate, Sulphuric Acid and/or Phosphoric Acid.
  • Monoammonium and Diammonium Phosphate (MAP/DAP) using Pipe Reactor.
  • NOx Abatement Catalytic Units.
Propietary Technologies Development Division (DDTP)

Over more than 40 years, and through its technology centre for the Development of Own Technologies (DDTP) Técnicas Reunidas has developed a series of own metal recovery technologies.

The developed technologies allow the recovery of non-ferrous metals such as zinc, copper, lead, silver, nickel and mercury, in the form of metals or their high purity salts, starting with primary or secondary materials.

The processes for obtaining zinc (Modified Zincex Process TM) and lead and silver (Ecolead TM Process) stand out for their technological and commercial success.

Both processes stand out for their flexibility, efficiency, profitability and adaptation to different raw materials and customer requirements.

Heat Transfer

More than 7,000 units supplied to world-class customers.

The Técnicas Reunidas Heat Transfer Division (TECNICAL) has been one of the leaders in heat transfer solutions since 1965, with services including the design, supply and construction of heat transfer equipment for refineries, petrochemical plants, thermal power plants and nuclear and other industrial facilities.

The equipment is designed to be highly efficient and is supplied in compliance with strict quality and environmental control requirements, made to measure according to the specific needs of each customer and process.

Técnicas Reunidas has the capacity to perform thermal and mechanical designs, including:

  • Process Furnaces.
  • Reshapers.
  • HRSG.
  • Environmental Protection Equipment (SRU incinerators, Thermal Oxidisers…).
  • Steam Generation.
  • Heat Exchangers & Aircoolers.
  • Nuclear Equipment.
  • Solar Equipment.
  • Special Designs & Packages.