SU806110A1 - Ionite regeneration plant - Google Patents

Description

one

The invention relates to waterborne TCBKe and in particular when using continuous ionization apparatus with remote regeneration for this purpose.

At present, devices of continuous ionization of vrda, which have great advantages over devices of a periodic effect, are widely used abroad in the practice of water treatment.

A known installation for the regeneration of IONITS, comprising a vertical case with a slurry duct, an ionite inlet water in its upper part and a duct ionite slurry duct in the lower part of the hull, a drainage of Ioaraite hydrotransportation systems, a discharger of fresh regenerant solution, sequentially located in the housing along its height fresh wash water dispenser and waste water drainage.

The ion exchanger enters the accumulation zone through the feed slurry line, and further, after successive stages of regeneration and washing, enters the accumulation zones of the treated ion exchanger,

from where it is removed to the working apparatus (software is discharged 1 (at the slurry duct).

Moving of an ion exchanger from top to bottom HAPPENS periodically at a short-term Termination of the supply of fresh water from an e-mail and removal of water from the plant during this period through the bottom drainage.

In the wash water past the area

 ion exchanger, fresh is introduced

regeneration solution. The latter, diluted with waste water, enters the regeneration zone, from where it is removed through the drainage of used water.

solution to neutralize.

To provide a deep casting of the ion exchanger, a considerable excess of wash water is required. For example, in the regeneration of ion exchangers type KU-2,

AB-17 requires 4-6 volumes of casting water per volume of processed material. It is known that the deeper the degree of washing of the ion exchanger is required, the greater the excess water

required on his otmlvku. Moreover, only in the first portions of washing water a significant amount of l is contained.

Not enough} com known installation

for the regeneration of ion exchangers is

The fact that all the wash water, which is fed into the installation, is irretrievably lost.

The purpose of the invention is to improve the economics of the installation by utilizing partially used waste water.

This goal is achieved by the fact that the installation is equipped with additional drainage located between the distributors of fresh wash water and fresh regenerant solution.

The drawing shows the installation for the regeneration of ion exchangers, a general view.

The installation incorporates a housing 1, a supplying slurry pipeline 2, a discharge pipelines 3, a drainage 4 of waste water, a distributor 5 of fresh otmvvochnoy. water, b drainage of partially spent wash water, dispenser 7 fresh regeneration solution, drainage 8 waste solution, drainage 9 Ionit hydrotransportation.

The installation works as follows.

Washing water through the distributor 5 enters the installation, where it is divided into two streams. A part of it is spent on the displacement and transportation of the treated ionite, and the main amount of water enters the zone of the deep washing of the ion exchanger, after which the main amount of partially used water goes through additional drainage b for recycling. The remaining part of the washing water enters the coarse washing zone, after which the water dilutes the regenerative solution supplied through the distributor 7. The used reagent solution through the drainage 8 is fed further to neutralization.

The water transporting the ion exchanger to the storage zone is removed through drainage 9 for reuse.

The main advantage of the proposed unit for the regeneration of ion exchangers is that the additional drainage introduced makes it possible to discharge, for the purpose of utilization, partially used wash water, in which, after passing through the deep washing zone of the ion exchanger, a small amount of salts is contained.

In order to prevent a significant amount of salt from being washed into the utilized washing water in the initial period of the washing operation, the accumulation zone of the treated ion exchanger is chosen equal to or less than the volume of the deep and coarse ion exchanger wash zone.

The irretrievable loss of water in the proposed installation is determined by the amount of water, for example, the preparation of the working reagent solution.

concentration and volume of water for washing, equal to one and a half times the volume of the treated ion exchanger.

Experiments have shown that the irretrievable losses of water for the regeneration of ion exchangers in the proposed installation are reduced by 60-70% compared with existing installations of continuous regeneration.

The speed of the upstream flow from the ° ° water in the zone of deep washing of the ion exchanger is much higher than in the zones of rough washing and regeneration. Due to the high speed of the washing water in the deep washing zone, a cork - ion exchanger (hydraulically clamped layer}) is formed, which prevents the lower layers of the ion exchanger from lowering as the treated accumulator is removed.

This unit for regeneration

ionites can significantly reduce the irretrievable loss of water and simplify the installation of the neutralization of discharged waste reagents.

Reducing the volume of discharged water is particularly important in conditions where it is necessary to eliminate the discharge of oily water into the reservoir, since for this purpose

thermal management techniques for rastor with the release of dry salts.

Fresh wash water into the installation and drainage of water from the installation is carried out in the proposed and existing installations automatically according to the developed program.

Claims (1)

1. Shkrob MS. Boiler installations and water preparation, M., Mashinostroenie, 1975, v.4, p.37-45. / tHIIIIUIIilimi N hllllillHIllllliil f J..V-J vL hMiiiiiriitimm iiiHiiiniiHuml