Reconstruction and refurbishing

Reconstruction and refurbishing

Omega – Teplotechna Praha a.s. carries out repairs of all types of industrial chimneys with the purpose to restore their life expectancy or to adjust their structure to new demands. Comprehensive services offered by our company are system oriented: they include all necessary steps from the site survey thru the project documentation to the proper execution of work in the extent and quality required for the reliable operation of the equipment.

The customers of Omega – Teplotechna Praha a.s. are power plant companies, central nad local heating plants, cement and lime works, chimney operators from metallurgical, chemical and paper industries, as well as other operators of tall industrial chimneys. Consultation and professional technical assistance for solving all problems occurring to the tall chimneys operators in connection with the maintenance of the industrial chimneys is a standard service.

Demolition of industrial chimneys

Chimneys which cannot be operated any more and which are no more suitable for preservation and maintenance shall be removed and substituted by new ones. Omega – Teplotechna Praha a.s. can demolish any kind of chimney using different special methods and technologies.

Special reconstruction of industrial chimneys

A modification of operating or technological conditions concerning the flue gas frequently brings a need of special reconstruction of tall industrial chimneys. Omega – Teplotechna Praha a.s. has carried out a great number of unique measures for renewal of chimneys’ functionality.

Lining and refurbishment of the inner liner of a chimney

Among the most frequent modifications of existing chimneys belongs the refurbishment of the inner flue duct lining. For the future safe operation a whole complex of related problems shall be solved in a qualified and comprehensive way from the flue gas draft calculation thru the optimum velocity of outgoing flue gas to the design of suitable design solution and finally to the optimal solution form the economic point of view,

Pollution of chimneys and confusor application  

An accompaniment of tall industrial chimneys operation is the surface pollution by fouling contained in the flue gas. 
This pollution is not only a visual defect, but the flue gas condensation at the chimney top gives rise to a high chemical loading. In addition to the surface pollution and damage of the aircraft warning paint the outer concrete surface of the chimney is damaged as well as the chimney equipment.

To prevent an excessive pollution of the chimney surface, an outstanding solution applying a so called confusor can be used for the reconstruction of the chimney.  Confusor is a device mounted on the head of the chimney resulting in acceleration of the flue gas flow with the possibility of condensate downcomer ending at the chimney bottom.
Omega – Teplotechna Praha a.s. has already installed several confusors, which accomplish their planned function.

Compensators and chimney sealing

Because of dilatation of materials used for chimney liners is often necessary to divide the liner into individual section.
The connection of these sections must be gas-tight, which occurs mostly by application of compensators.

Reconstruction of damaged dilatation component of the inner liner is an important requirement for safeguarding a long time operating life of the chimney. Functionless dilatation points of the lining cause flue gas leakage into the interspace of the chimney resulting in an irreversible damage. The repair cost in this case is immense and – compared with the cost of a preventive repair – disproportionate. At present, the state-of-the-art approach for tall industrial chimneys are different types of compensators enabling a secure gas-tightness of the dilatation joints under the liner movement caused by the thermal dilatation of the lining material.

The subject of compensators is quite extensive and Omega – Teplotechna Praha a.s. can offer its qualified technical help in this area as well.