SU65889A1 - The method of regeneration of amino resin, used as an adsorbent of acids in chemical desalination of water - Google Patents

Description

The well-known method of chemical desalting of water: using H-cationic materials (sulfonic) and sorbents of lineric acids (ammonia resins, activated carbons, etc.) begins to acquire lromyshl-ny application. This method is especially important for high pressure boilers and for medium pressure boilers (33 atm) that are sensitive to entrainment. At power plants, along with the consumers of chemically demineralized water, there are consumers who are satisfied with simpler and cheaper methods of water treatment (boilers of medium and low pressure, make-up water for heating networks, etc.). This forces, in order to save, Idem at the stations practically two geographically combined water treatment plants. To satisfy the needs of medium and low pressure boilers, as well as heating networks, the well-known schemes of the water cycle G10Ts: QW (mainly liming - cationization) can be used. CoR-NHs-HCl-i-NaHCOgR NHa HjSOi-f 2NaHCOs. The Na-cationite filters are an element of all these schemes. To reduce the cost of chemical desalination of water, on the one hand, and to simplify the preparation of water for other consumers, on the other hand, it is advisable to use a Kolbibirovaya scheme. Its essence lies in the fact that p d.m with H-cation-exchange filters are installed cation-exchange filters for water treatment, which is suitable for meeting the needs of all other consumers, except for high-pressure boilers. These filters are regenerated with table salt (they work as E as Na-cation exchanger). The softened water in these filters, having an alkalinity equivalent to carbonate hardness, is directed to depleted m filters that sorb mineral acids. When water is filtered through depleted sorbents of mineral acids, the latter are regenerated and the alkalinity of Na-cationized water is simultaneously reduced: NHa + NaCI -f H, O -f COz NH2 + + 2H2O + 2CO2

Thus, the combination of Na-cation filters, intended for treating water for the needs of middle and; The viscous pressure, as well as the heat networks with the installation for desaluum water, allows for the regeneration of gimshu-resins, as well: they can be acids as the sorbitite. In this case, according to the method developed, it is possible to:

a) completely eliminate the consumption of alkalis (NaOH; Ma2COz; MAISO3) for regeneration of filters sorbing minerals and acids;

b) reduce the alkalinity of the Na-cationic oxide (WATER, and available to it to supply the boilers of medium and low pressure, thereby reducing the size of the blowdown;

c) eliminate the need to use cumbersome liming schemes for the preparation of water supplied for the needs of medium pressure boilers;

d) eliminate the consumption of H-cationized water for the own needs of filters - sorbents of mineral acids (regeneration, washing),

PRED; 1ET and 3 ABOUT IT

Using IB as an adsorbent for the chemical desalting of water, the process is treated with nitrion-cationized water.