The method of obtaining polygaloides anion exchange resin

 

(57) Abstract:

The invention relates to a technology for polygaloides anion exchange resin designed for the disinfection of condensates in water systems and drinking water. The objective of the invention is providing a method to obtain polygaloides anionoobmennoi resin shorter time with less consumption of iodine and KJ while maintaining at the level of the known technical solutions resource and disinfecting properties of halogenated anion exchange resin. Prigorodnyy anion-exchange resin obtained from highly basic cybertechnologies of the anion by treatment with 2 - 5 mol/l solution of sodium chloride in 0.1 to 0.3 mol/l hydrochloric acid solution, washing and drying of the anion to a residual moisture content of 5 to 15% with the subsequent moderowaniem its solution J2in KJ with stirring. The molar ratio of anion exchange resin : iodine : modesty potassium is 1,0 : 0,8 - 1,2 : 0,7 - 1,0. After iodination anion exchange resin thermostabilizers in the same solution at a temperature of 45 - 55oC. 1 C.p. f-crystals, 2 tab.

The invention relates to the production of polygaloides anion exchange resin designed for the disinfection of condensates in water systems and drinking water.

In recent years, widespread for these purposes, the exchange resin containing various anionic form of iodine. This has necessitated the development polygaloides of the anion exchange resin used in domestic private videosystem device "Spring".

SIA-1 (resin to iodinated anion exchange) has a very high iodevicetree (40 to 60 mg/l of iodine) which requires a complex system subsequent purification of water.

A method of obtaining polygaloides resin, which was difficult given the source of the anion, halogenation its solution J2in KJ when the molar ratio 1 1 0.8 in the apparatus with a mechanical stirrer for 24 h, washing the resin from contact solution, further processing of the resin in the fluidized bed circulating aqueous solution of J2at a temperature of 60 80oC for 24 h

Preliminary preparation of the source of the anion was quaternization of (increasing the number of Quaternary ammonium groups in the anion exchange resin) and the washing of unreacted Dilli Prigorodny anion exchange resin, comprised of complexes J-3I ,J-5I ,J-7< / BR>
This way obtained Prigorodny anion, is able to sufficiently disinfect large volumes of water. However, this method is not without disadvantages. Operation quaternization of complex and gives a large number of aggressive wastewater. Subsequent operation iodization multistage and long, requires special corrosion-resistant equipment. A significant portion of the granules due to internal stresses destroyed during the formation of the anion of the highest political J-5I ,J-7< / BR>
Analysis of the current level of technology shows that closest to the proposed method of obtaining polygaloides of the anion is the way (prototype), which consists in processing (ionirovanii) cybertechnologies highly basic anion exchanger with constant stirring for 24 h the solution of J2in KJ in the minimum possible amount of water at the ratio of anion exchange resin (based on the full static exchange capacity (PSOY) J2KJ is equal to 1,0 1,0 1,2 0,7 -1,0 and subsequent washing of the obtained polygaloides anion exchanger from excessive iodine demineralized water in caliceal stable in demineralized water of J2and 10-that is much more powerful disinfecting agent than J2. The product almost does not emit J-3poor bactericide. The level of release of these substances from 150 cm3the anion exchange resin at a rate of transmission of water from 200 to 700 cm3rpm is 3 to 5 mg/l 10-and from 4 to 7 mg/l J2. As is known, the proposed anion exchange resin showed high antibacterial properties. By passing the water with a speed of 75 to 170 ml/min inseminated by bacteria E. Coli from 8,8104to 1,110 land only6cells/ml Through a column of polygaloides anion exchange resin in the amount of 100 cm3the eluate viable bacteria were not found.

The main disadvantage of the prototype is unproductive consumption of iodine and KJ, and the duration of the process of iodization.

In this regard, there is the technical problem to develop a method of obtaining polygaloides anion exchange resin designed for the disinfection of condensates and drinking water, less extended in time with less consumption of valuable raw materials iodine and KJ while maintaining at the level of the known technical solutions resource and disinfecting properties of halogenated anion exchange resin.

Things is Ichneumonidae of the anion by treatment of the anion 2 5 mol/l solution of sodium chloride in 0.1 to 0.3 mol/l hydrochloric acid solution, washing and drying of the anion to a residual moisture content of 5 to 15% with the subsequent moderowaniem its solution J2in KJ with stirring. After iodination anion exchange resin thermostabilizers in the same solution at a temperature of 45 to 55oC. When ionirovanii the molar ratio of anion exchange resin iodine modesty potassium is 1,2 1,0 0,8 0,7 1,0.

As the source of the anion exchange resin using highly basic cybertechnology anion exchange resin based on a styrene-divinylbenzene 1st type (AV-17 GOST 20301-74) or its chemical analogues Amberlite JRA-900, Dowex 1-X8 (prototype) and in contrast to the known technical solution is highly basic anion exchange resin of the 2nd type AB-29-P (GOST 20301-74), iodine according to GOST 4159-79.

Analysis of the proposed method of obtaining polygaloides anion-exchange resin and known technical solutions shows that there is no set of features,identical to the technical nature of the proposed. Comparative analysis of the proposed solution with the prototype shows that the proposed solution differs from prototype introduction in the way of extra steps: processing of anion exchanger 2 5 mol/l solution of sodium chloride in 0.1 to 0.3 mol/l hydrochloric acid solution followed by washing and drying to a residual moisture content of 5 to 15% before jodirovanic is wearing the iodine anion modesty potassium is 1,2 1,0 0,8 0,7 1,0.

Thus, the proposed method meets the criteria of the invention of "Novelty."

In literature and practice, there is no information about the method, is identical to proposed and it is not obvious from the prior art.

This allows us to conclude that the proposed solution meets the criterion of "inventive step". The proposed solution provides the achievement of the technical result can be achieved in the production polygaloides of the anion and enables repeated playback, which allows to make a conclusion about the satisfaction of the claimed invention, the criterion of "industrial applicability".

Example 1.

Highly basic cybertechnology anionite AV-17-10P placed in a 2 mol/l NaCl 0.1 mol/l HCl solution for 2 h, washed with two volumes of deionized water per volume of resin. Air-dried to a residual moisture content of 5% for the 1 o'clock Place 100 g of the dry anion exchange resin with the PSOY equal to 3.0 mEq/g in a pre-prepared solution of J2in KJ with the contents of the components of J20.3 mol, 0.3 KJ mol.

A solution of J2in KJ prepared in 35 cm3demineralized water, which corresponds to minimal who is for 1.5 h in the device with the included upper mixing device. Received Prigorodny anion exchange resin thermostatic in the same capacity at a temperature of 45oC for 2 hours the sample Obtained is washed with four volumes of demineralized water. The total process time is 6.5 hours Indicators of process parameters are presented in table. 1. The quality indicators received polygaloides of the anion exchange resin of example 1 are presented in table. 2.

Example 2 8.

The method of obtaining analogous to example 1.

Options stages of the process of obtaining presented in table. 1, the results of the analyses are presented in table. 2.

Example 9 (prototype)

Highly basic cybertechnology anion exchange resin Dowex J-X8 (similar to AB-17-10P) washed with demineralised water swollen, but without water in the intergranular space was placed in a solution of J2in KJ when the ratio of the components participated in the resin J2KJ 1,0 1,2 1,0 24 h at a constant operating the stirrer. Received Prigorodny anion exchange resin was washed with 2 volumes of diest. water volume of the anion. The parameters of the process steps and the results are presented in table. 1 and 2.

To thermostatically at temperatures above 55oC is impractical due to possible decomposition of the anion.

Concentrations released from Polygal the e drying was determined according to GOST 10898.1-84.

Thus, the presented examples and tables it is seen that the introduction of the stage of processing of the anion exchange resin with a solution of sodium chloride in hydrochloric acid the proposed concentration eliminates the need for the introduction of excessive amounts of iodine.

The introduction stage of drying of the source of the anion leads to the reduction of time for iodination in 6 to 8 times. Introduction stage thermostat (heat-set) after iodization process reduces the amount of unreacted iodine (mostly in the form J-3-ion) in the contact solution from 10 to 15 g/l to 1 5 g/l compared to the prototype, in which a stage is missing, and also stabilizes the allocation of J2and 10-.

1. The method of obtaining polygaloides anion exchange resin of the strong basic cybertechnologies of the anion by iodination its solution J2in KJ with stirring and subsequent washing, characterized in that before moderowaniem spend processing of the anion 2 5 mol/l solution of sodium chloride in 0.1 to 0.3 mol/l hydrochloric acid solution followed by washing and drying of the anion to a residual moisture content of 5 to 15% and after iodination anion exchange resin thermostatic in the same solution at 45 55oC.

2. The method according to p. 1, otlichuy the

 

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