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Mixed bed regeneration improvement process, system and application

A mixed-bed and process technology, applied in the field of mixed-bed regeneration improvement process, can solve the problems of affecting the regeneration effect of the regeneration solution, the mixed-bed backwashing effect is poor, and affecting the production of desalinated water, etc., so as to shorten the alkali feeding time and improve the regeneration effect. , the effect of easy promotion

Active Publication Date: 2021-02-02
YANKUANG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0040] Problems were exposed in the actual operation: 1. The backwashing effect of the mixed bed is poor, and the resin is prone to compaction and clumping, and the backwashing resin is not loose. Partial layer, affecting the regeneration effect of the regeneration liquid
During the shutdown of the system, the air separation system stops, and the external supply of compressed air will stop. The compressed air used for regeneration of the desalted water mixed bed comes from the compressed air pipe network. Once the medium is stopped, the desalted water mixed bed will not have regeneration conditions , affecting desalinated water production and restricting system operation

Method used

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  • Mixed bed regeneration improvement process, system and application
  • Mixed bed regeneration improvement process, system and application
  • Mixed bed regeneration improvement process, system and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Mixed bed regeneration steps:

[0079] a. Air scrubbing: Drain to the height of 50cm of the resin layer, close all valves, open the intake valve, exhaust valve, and reverse discharge valve; the intake pressure is controlled at 0.08Mpa, and the flow rate is 2.5m 3 / m 2 . S, the mixing time is 300s (confirm that the resin is loose). After the air stops, close the intake valve, reverse discharge valve and exhaust valve. Drain immediately and quickly, forcing the entire resin bed down quickly.

[0080] b. Backwash pre-layering: close the water inlet valve and water production valve; close the manual water production valve and the drain valve of the resin trap; open the backwash water inlet valve and backwash drain valve, and start the intermediate water pump to make the resin in full Flowing state, backwash broken resin away. Control the manual backwash valve to control the backwash flow. The normal granular resin is not washed out by the water flow. The backwash end p...

Embodiment 2

[0097] The desalinated water station has two Roots blowers to supply air to the filter, and a DN100 bypass is added at the outlet of the blower to connect with the compressed air inlet main to the mixed bed to realize dual air sources to ensure air supply. When the compressed air supply is stopped, the regeneration air source is switched to the Roots blower to ensure the normal regeneration of the mixed bed.

[0098] Roots blower: model L52LD air volume 22m 3 / min wind pressure P=68.6KPa. Meet gas supply requirements.

[0099] Effectively solve the problem of shutting down the compressed air source of the pipeline network, and ensure the stable and sustainable source of the mixed bed regeneration gas source.

Embodiment 3

[0101] The difference from Example 1 is that the air intake pressure of air scrubbing is controlled at 0.08Mpa, and the flow rate is 2m 3 / m 2. S.

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PUM

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Abstract

The invention belongs to the field of water production, and relates to a mixed bed regeneration improvement process, a system and application. The process comprises air scrubbing, backwashing pre-layering, primary drainage, alkali feeding failure, backwashing layering, standing, secondary drainage, pre-injection, acid and alkali feeding, replacement, after-replacement drainage, regeneration mixing, regeneration irrigation, regeneration forward washing, and operation. The backwashing effect is enhanced by compressed-air scrubbing, so that the resin is fully loosened. The subsequent backwashingis facilitated. Meanwhile, in the alkali feeding failure step, the alkali feeding mode is adjusted, a positive discharge valve is changed into a middle discharge valve, alkali can fully and only exchange with upper-layer anion resin, meanwhile, a small amount of upper-layer cation resin fails, the alkali feeding time is shortened, the alkali consumption can be reduced, and the regeneration effectis improved.

Description

technical field [0001] The invention belongs to the field of water production, and in particular relates to an improved mixed bed regeneration process. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily to be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The desalinated water section adopts: pretreatment + reverse osmosis + mixed bed process to prepare high-purity desalted water for water replenishment of high-pressure boilers. [0004] (1) Introduction of mixed bed parameters: [0005] Model: YT-LMX-2500 [0006] Diameter: Φ2500mm [0007] Design output: 200m 3 / h [0008] Working pressure: ≤0.6 Mpa [0009] Working temperature: 5℃~45℃ [0010] Water cycle: 168h [0011] Operating velocity: 30-60m / h [0012...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J49/60C02F1/42F22D11/02
CPCB01J49/60C02F1/42F22D11/02C02F2001/427Y02A20/131
Inventor 刘娟吴晓苹赵浩
Owner YANKUANG GRP CO LTD
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