The most widespread option of washing of the heattechnical equipment is chemical in-place washing which allows to transfer rather easily to the dissolved state overwhelming part of a scum and deposits and in such look to wash up them from system. Today for washing acid and alkaline solutions of different reagents are used.
Among them - composition organic and inorganic acids, for example, structures on the basis of orthophosphoric acid, solutions of sodium hydrate with different additives and other structures. Exact structures of structures for washing are kept by producers a secret.
Chemical washing - rather cheap and reliable method allowing to relieve system of a scum and pollution, however possessing certain shortcomings. Among them - impossibility of chemical washing of aluminum pipes, toxicity of flushing solutions, a problem of utilization of large amounts of acid or alkaline flushing solution.
Technically chemical washing is carried out as follows: after the chemical reagent corresponding to this system for washing otoplenipya is picked up and inhibitor of corrosion of pipes is chosen, on a venue of works the group of technical specialists leaves.
On site works the special capacity with the pump connected to system of heating is used. After all necessary chemicals is entered into system of heating the washing solution circulates in system of heating during time which is calculated individually depending on degree of impurity of system of heating. Chemical washing of heating can happen also during the winter period, without stopping systems of heating. Chemical washing of heating is cheaper than major repair of system of heating at 10-15 times, prolongs the term of normal operation of heating for 10-15 years, cuts electric power expenses on 20% — 60%.