CN214553112U

CN214553112U - Dilution preparation system of NaOH solution

Info

Publication number: CN214553112U
Application number: CN202022896992.4U
Authority: CN
Inventors: 汪珏; 刘海斌; 李阳; 浦陈龙; 朱永刚; 赵文虎
Original assignee: JIANGYIN JIANGHUA MICROELECTRONICS MATERIALS CO LTD
Current assignee: JIANGYIN JIANGHUA MICROELECTRONICS MATERIALS CO LTD
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-11-02
Anticipated expiration: 2030-12-04

Abstract

The utility model discloses a dilution preparation system of NaOH solution, which comprises a high-concentration NaOH solution storage tank, a first magnetic pump, a first flowmeter, a static mixer and a low-concentration NaOH solution storage tank which are connected in sequence; the front end of the inlet of the static mixer is also provided with a deionized water supply pipeline in parallel, and the deionized water supply pipeline is sequentially provided with a deionized water ton barrel, a second magnetic pump and a second flowmeter. The utility model discloses dilute preparation system have simple structure, use convenient, can the accurate measurement, dilute concentration is accurate, solution misce bene's advantage.

Description

Dilution preparation system of NaOH solution

Technical Field

The utility model relates to a chemicals preparation technical field, concretely relates to preparation system is diluted to NaOH solution.

Background

In the chemical production process, a large amount of dilute solution, such as dilute acid, dilute alkali and the like, is often needed to be used as a solvent or a lotion, and the solution is often required to be prepared by self in the production process. In particular, the dilute alkali solution is generally prepared by diluting with a high-concentration alkali solution, rather than NaOH, which directly dissolves solids. At present, solution dilution is usually carried out in the same tank body, two kinds of quantitative liquid are added into the reaction kettle for dilution, and the liquid is collected after dilution, wherein the dilution mode is generally carried out in a manual mode, such as feeding, discharging and the like, the dilution efficiency is low, metering equipment is backward, the concentration after dilution is unstable, and the quality of the diluted solution is unqualified; in addition, in the process of dilution preparation, the solution needs to be fully mixed to accurately prepare the solution with the required concentration.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide a simple structure, use convenient, can the accurate measurement, dilute concentration accuracy, solution misce bene's NaOH solution dilute preparation system.

In order to achieve the purpose, the technical scheme of the utility model is to design a dilution preparation system of NaOH solution, which comprises a high-concentration NaOH solution storage tank, a first magnetic pump, a first flowmeter, a static mixer and a low-concentration NaOH solution storage tank which are connected in sequence; the front end of the inlet of the static mixer is also provided with a deionized water supply pipeline in parallel, and the deionized water supply pipeline is sequentially provided with a deionized water ton barrel, a second magnetic pump and a second flowmeter. The utility model discloses set up first flowmeter and second flowmeter respectively on high concentration solution supply line and deionized water supply line, carry out the accurate measurement to high concentration solution and deionized water, improve the accuracy of the concentration after the solution dilutes; solution mixing adopts the static mixer who sets up on the pipeline to carry out the mixture of small capacity, can carry out intensive mixing, improves the quality of product.

The optimized technical scheme is that a pipeline at the front end of the static mixer is also provided with a premixing tank, the top end of the premixing tank is provided with a mixed liquid inlet, and the lower end of the premixing tank is provided with a mixed liquid outlet; the bottom of the inner space of the premixing tank is provided with an ejector, the ejector comprises a solution inlet and a solution outlet, and the solution inlet is connected with the mixed solution inlet. The front end of the static mixer is provided with a premixing tank, and the mixed liquid enters the premixing tank and is sprayed and premixed into the space of the premixing tank through an injector, so that the mixing uniformity of the solution product is further improved; meanwhile, the mixed solution is sprayed and mixed in the premixing tank through the injector, and partial heat generated during the mixing of the solution can be released in advance, so that the solution is prevented from being mixed in a pipeline or a mixer, a large amount of heat is generated, the safety of the pipeline and equipment is endangered, and the safety of the pipeline for mixing the solution is improved.

In a further preferred embodiment, the solution outlet of the injector faces downward of the premixing tank.

According to a further preferable technical scheme, a first temperature detector and a heat exchanger are sequentially arranged on a pipeline between the premixing tank and the static mixer, and the heat exchanger is further respectively connected with a condensed water supply system and a condensed water recovery tank.

The further preferable technical scheme is that a second temperature monitor is also arranged on a pipeline between the static mixer and the low-concentration NaOH solution storage tank.

The further preferred technical scheme is that a liquid level meter or a window is arranged on each of the high-concentration NaOH solution storage tank, the low-concentration NaOH solution storage tank and the deionized water ton barrel.

The utility model has the advantages and the beneficial effects that: the dilution preparation system has the advantages of simple structure, convenience and quickness in use, capability of accurately metering, accurate dilution concentration and uniform solution mixing. The utility model discloses set up first flowmeter and second flowmeter respectively on high concentration solution supply line and deionized water supply line, carry out the accurate measurement to high concentration solution and deionized water, improve the accuracy of the concentration after the solution dilutes; the solution is mixed by adopting a static mixer, so that the solution can be fully mixed, and the quality of the product is improved. The front end of the static mixer is provided with a premixing tank, and the mixed liquid enters the premixing tank and is sprayed and mixed through an injector, so that the mixing uniformity of the solution is improved; meanwhile, the solution is sprayed and mixed in the premixing tank through the injector, and partial heat generated during the mixing of the solution can be released in advance, so that the safety of a solution mixing pipeline is improved.

Drawings

Fig. 1 is a schematic structural diagram of the dilution preparation system of the present invention.

In the figure: 1. a high-concentration NaOH solution storage tank; 2. a first magnetic drive pump; 3. a first flow meter; 4. a static mixer; 5. a low-concentration NaOH solution storage tank; 6. a deionized water ton bucket; 7. a second magnetic drive pump; 8. a second flow meter; 9. a pre-mixing tank; 10. an ejector; 11. a first temperature detector; 12. a heat exchanger; 13. a condensed water supply system; 14. a condensate recovery tank; 15. a second temperature monitor; 16. a viewing window.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, the utility model relates to a system for preparing NaOH solution by dilution, which comprises a high-concentration NaOH solution storage tank 1, a first magnetic pump 2, a first flowmeter 3, a static mixer 4 and a low-concentration NaOH solution storage tank 5, which are connected in sequence; the front end of the inlet of the static mixer is also provided with a deionized water supply pipeline in parallel, and the deionized water supply pipeline is sequentially provided with a deionized water ton barrel 6, a second magnetic pump 7 and a second flow meter 8. The static mixer is selected from the Graet environment technology of Qidong city, the model is SK40X20X40-16-1000, and the material is 316L.

A pre-mixing tank 9 is further arranged on a pipeline at the front end of the static mixer, a mixed liquid inlet is formed in the top end of the pre-mixing tank, and a mixed liquid outlet is formed in the lower end of the pre-mixing tank; an injector 10 is provided at the bottom of the interior space of the premix tank, the injector comprising a solution inlet and a solution outlet, the solution inlet being connected to the mixed liquor inlet.

The solution outlet of the injector is directed towards the bottom of the premix tank.

A first temperature detector 11 and a heat exchanger 12 are further sequentially arranged on a pipeline between the premixing tank and the static mixer, and the heat exchanger is further respectively connected with a condensate water supply system 13 and a condensate water recovery tank 14.

And a second temperature monitor 15 is also arranged on a pipeline between the static mixer and the low-concentration NaOH solution storage tank.

And windows 16 are arranged on the high-concentration NaOH solution storage tank, the low-concentration NaOH solution storage tank and the deionized water ton barrel.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A dilution preparation system for NaOH solution is characterized by comprising a high-concentration NaOH solution storage tank, a first magnetic pump, a first flowmeter, a static mixer and a low-concentration NaOH solution storage tank which are sequentially connected; the front end of the inlet of the static mixer is also provided with a deionized water supply pipeline in parallel, and the deionized water supply pipeline is sequentially provided with a deionized water ton barrel, a second magnetic pump and a second flowmeter.

2. The system for preparing diluted NaOH solution according to claim 1, wherein a pre-mixing tank is further disposed on the pipeline at the front end of the static mixer, a mixed solution inlet is disposed at the top end of the pre-mixing tank, and a mixed solution outlet is disposed at the lower end of the pre-mixing tank; the bottom of the inner space of the premixing tank is provided with an ejector, the ejector comprises a solution inlet and a solution outlet, and the solution inlet is connected with the mixed solution inlet.

3. The dilute preparation system of NaOH solution according to claim 2, characterized in that the solution outlet of the injector is directed towards the bottom of the premixing tank.

4. The dilution preparation system for NaOH solution according to claim 3, wherein a first temperature detector and a heat exchanger are sequentially arranged on the pipeline between the premixing tank and the static mixer, and the heat exchanger is further connected with a condensed water supply system and a condensed water recovery tank respectively.

5. The diluted NaOH solution preparing system of claim 4, wherein a second temperature monitor is further disposed on the pipeline between the static mixer and the low concentration NaOH solution storage tank.

6. The diluted NaOH solution preparing system of claim 5, wherein the tanks for storing high-concentration NaOH solution, low-concentration NaOH solution and DI water are equipped with level gauges or windows.