Pressure parts and Equipment
ĐĐ TEP is one of the leading European manufacturers of pressure parts and boiler equipment which are produced according to own or customer’s documentation, while maintaining highest quality, contracted deadlines and competitive prices. Our services include engineering and design, manufacturing, delivery, erection and commissioning of our products which are part of some of the largest plants in Europe and all over the world.
Boiler pressure parts
Air heaters & coolers
Air Condensers
(A type)
Power Plant Pipelines
- Conceptual design
- Basic design (fuel handling, combustion & flue gas system, FGC, water & steam cycle)
- Detail design
- Material & equipment procurement
- Manufacturing
- Erection
- Commissioning
The production possibilities of ĐĐTEP enable the production of pressure parts of any type and size of boilers, including supercritical boilers, without limitation, with capacities for membrane cladding as well as single tube and chamber cladding. ĐĐTEP is proud of the ability to process and manufacture pressure parts from a wide range of all known boiler materials and even those that are not common in boiler manufacture. Some of them are:
ĐĐTEP owns all relevant certificates to produce boiler pressure parts including ASME “U” and “S” trademarks.
Air heaters and coolers
Depending on the specific processes and customer’s wishes we design air heaters, and manufacture them out of carbon and stainless steel, using plain and finned tubes.
Flue gas heaters
Air heaters are heat exchangers for air heating, cooling and condensation of flue gases, and for heat recovery. Therefore, they are installed on the output part of the flue gas boiler. In this process of recovery of waste flue gases, the combustion improves and achieves greater efficiency of the system.
Air heaters from steam, condensate or hot water
Air heaters are heat exchangers for air heating, cooling and condensation of steam and water, and for heat recovery. The air heater can be individually adapted to client’s requirements and combined with the recuperation system.
Photo: Transportation of air heaters to the UK
Air condensers (type A)
The air condenser is installed in power plants and cogeneration plants after the condensation turbine as part of the circular process. Used for condensing low turbine exhaust steam (e.g. 0.1bar), where the mass content of steam is greater than 90%. The exhaust steam is transmitted to the inlet air condenser chamber via the pipeline. The air condenser is a modular type and such a design assures different steam condensing power ranges, or very different capacitor sizes.
The air condenser consists of:
- steel structures
- diffuser
- axial fan
- fan drive
- air duct channel
- heat exchanger
All the components of the condenser are made according to the best available technology, and thus the air condenser is the top product that can meet the needs of the most efficient cogeneration plants.
Photo: Biomass cogeneration plant, Croatia
Pipelines for power plants
Pipelines are used to transfer media that can be influenced by high temperature and pressure effects. They are differentiate by working pressure; low pressure, medium and high-pressure piping. Due to all the effects on the pipelines and pipelines on the environment, it is necessary to examine the strength and their elasticity and influence on the external equipment to which they are connected, and which may have prescribed permitted stresses (some of the programs used: PROBAD, ROHR 2…). Framed classification of pipelines according to PED 2014/68/EU.
The quality of the pipeline material depends on the working parameters of the pipeline, and it usually ranges in quality: P235GH-TC2, 16Mo3, 10CrMo9-10, 13CrMo4-5, X10CrMoVNb9-1 (PI91)…
Division of pipelines and vessels according to the norm EN12952 – internal piping, EN13480 – external piping, EN13445 – pressure vessels.
Photo: Displays explored and calculated pipelines for existing projects in the PDMS – Design 12.1 SP4 program together with modified equipment and set-ups ie. pipeline substructure.