CN102205997A - Subacid electrolysis water, generating method and apparatus thereof - Google Patents
Subacid electrolysis water, generating method and apparatus thereof Download PDFInfo
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- CN102205997A CN102205997A CN201010154753XA CN201010154753A CN102205997A CN 102205997 A CN102205997 A CN 102205997A CN 201010154753X A CN201010154753X A CN 201010154753XA CN 201010154753 A CN201010154753 A CN 201010154753A CN 102205997 A CN102205997 A CN 102205997A
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- brine electrolysis
- subacidity brine
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Abstract
The invention discloses a generating method for subacid electrolysis water, and an apparatus thereof. According to the present invention, during generating the subacid electrolysis water, even if raw water having an extreme raw water hardness is adopted as the raw water, subacid electrolysis water accorded with components and specifications of food additive defined in food hygiene law is generated. With the present invention, dilute hydrochloric acid is electrolyzed through an undivided electrolytic cell; the electrolytic solution is diluted through the raw water to generate the subacid electrolysis water, wherein a alkaline metal or a alkaline earth metal is added to the raw water before the raw water is provided for diluting the electrolytic solution, such that a purpose of the present invention is achieved.
Description
Technical field
The present invention is about a kind of generation method of subacidity brine electrolysis, this subacidity brine electrolysis by with dilute hydrochloric acid in addition electrolysis have sterilization effect.
Background technology
So-called subacidity brine electrolysis is a kind of sterilization material, be by undivided cell with in addition electrolysis of dilute hydrochloric acid, again this electrolytic solution is formed with the water dilution.Because its raw material only uses hydrochloric acid, do not contain unnecessary salt, and be subacidity, its sterilization composition almost all exists with the plain form of molecularity time inferior hydrochloric acid, thus though it is extremely thin solution, have sterilizing power by force, good characteristic such as have good stability.In addition, the sterilization that is used for food can not generate haloform yet, and almost tasteless odorless is very safe, can relievedly use.Therefore, its utilize scope by foodstuff manufacturing be extended to medical treatment gradually, look after, field such as agricultural, service sector.In the patent documentation 1 (Te Kaipingdi 10-128336 communique), disclosed the generation method of the subacidity brine electrolysis that the inventor invented.
As desire this subacidity brine electrolysis is used for food additives, must meets the composition specification of food hygiene law defined.Also promptly, its raw material must use drinkable water, and the hydrochloric acid of using with this water that is suitable for dilution food additives, and its effective chlorine density must be below the above 30ppm of 10ppm, and its pH must be more than 5 below 6.5.
And the subacidity brine electrolysis be with dilute hydrochloric acid as raw material, so electrolysis is not and residual as if this part of raw materials hydrochloric acid, then pH will change according to its residual quantity.And not electrolytic hydrochloric acid because of can in and the hardness composition of calcium/magnesium salts etc. keep suitable pH, therefore adjust the electrolysis degree and control its pH at proper range in order to cooperate the raw material water hardness, not electrolytic hydrochloric acid is necessary.But, as the area at water source, will there be the volume sky and water to flow in rivers and creeks that rainwater and snowmelt flow in snow melt or rainy period, can be directed at hardness and extremely descend.In order to tackle this situation, must be again the electrolysis degree of hydrochloric acid be improved, but on formation efficiency, improving the electrolysis degree has its restriction, so extreme low-hardness water might make pH surpass the lower value of food additives.
Summary of the invention
Purpose of the present invention is to provide a kind of method, that is, even if with the extremely low soft water of original water hardness as raw material, still can generate the subacidity brine electrolysis that meet food hygiene law defined composition specification according to the condition that is fit to food hygiene law.
If use the extremely low soft water of original water hardness, residual micro-hydrochloric acid may cause the pH of subacidity brine electrolysis to reduce owing to be difficult to neutralize not electrolysis, and for addressing this problem, the inventor expects replenishing in advance pH surge capability or counteragent.
For achieving the above object, the present invention has taked following technical scheme:
A kind of generation method of subacidity brine electrolysis, dilute hydrochloric acid is being given electrolysis with undivided cell, again electrolytic solution is generated in the method for subacidity brine electrolysis with this with former water dilution, add alkaline metal salt or alkaline earth salt in the former water before dilute electrolyte.
Secondly, for the subacidity brine electrolysis that makes generation is applied in the food additives, make this interpolation alkaline metal salt or alkaline earth salt raw water quality afterwards be met the water quality standard of the defined of water law from the beginning of record in province's order.
Secondly, food hygiene law be must meet too, the alkaline metal salt or the alkaline earth salt that are suitable for the food additives specification used owing to make an addition to the salt of former water.
Alkaline metal salt or alkaline earth salt comprise in salt of wormwood, potassium bicarbonate, yellow soda ash, Sodium Hydrogen Carbonate, lime carbonate, calcium hydroxide, the magnesiumcarbonate one or more.
In order to satisfy the important document of subacidity brine electrolysis, the subacidity brine electrolysis pH that is generated is controlled at more than 5 below 6.5 as food additives.
For the subacidity brine electrolysis of continuity generation regulation and control pH, the former water at continuity flows down adds the alkaline metal salt or the alkaline earth salt that are directly proportional with the former water yield.
Generate in order to make the subacidity brine electrolysis that meets the food hygiene law standard be able to automatic Continuity ground, detect the addition of the pH of subacidity brine electrolysis by continuity, the pH of subacidity brine electrolysis is maintained more than 5 below 6.5 with control alkaline metal salt or alkaline earth salt.
The present invention also provides the subacidity brine electrolysis that adopts aforesaid method to generate.
At last, the present invention also provides a kind of device, and this device is in order to implement the generation method of above-mentioned subacidity brine electrolysis.
Compared with prior art, the present invention has following beneficial effect:
At first, by with undivided cell electrolysis dilute hydrochloric acid, and generate in the method for subacidity brine electrolysis with former water dilute electrolyte, before former water dilute electrolyte, add alkaline metal salt or alkaline earth salt, with this when former water be utmost point soft soft water and can't be with electrolysis residual hydrochloric acid cushioned or in and the time, the subacidity brine electrolysis is regulated and control to suitable pH value.
Again, by making the raw water quality after alkaline metal salt or alkaline earth salt add be met the defined of the water law from the beginning water quality standard of putting down in writing in province's order, and make the manufacturing process of subacidity brine electrolysis meet the manufacturing process of food hygiene law defined, and then make the subacidity brine electrolysis of its generation can be used as food additives.
Moreover, meet alkaline metal salt or the alkaline earth salt that food adds specification by use, and make the subacidity brine electrolysis that is generated help being fit to the specification of food additives.
Moreover, by alkaline metal salt or alkaline earth salt, comprise one or more the solution in salt of wormwood, potassium bicarbonate, yellow soda ash, Sodium Hydrogen Carbonate, lime carbonate, calcium hydroxide, the magnesiumcarbonate, make the control of addition become easy, even use the former water of big hardness, pH that still can appropriateness regulation and control subacidity brine electrolysis.
Again moreover, the pH that generates the subacidity brine electrolysis by making is more than 5 below 6.5, can make the subacidity brine electrolysis that generates really can be as food additives.
Again moreover, according to the effective chlorine density of original water hardness, subacidity brine electrolysis and electrolytic condition etc., alkaline metal salt or alkaline earth salt continuity are added with certain ratio at the former water yield that continuity flows down, but continuity generates the subacidity brine electrolysis of adjusting pH.
And detect the pH of subacidity brine electrolysis by continuity, the addition of control alkaline metal salt or alkaline earth salt, the pH of subacidity brine electrolysis is maintained more than 5 below 6.5, but and then continuity generate the subacidity brine electrolysis that meets the food additives specification efficiently.
And by the subacidity brine electrolysis that generates according to preceding method is provided, irrelevant season or area can often utilize the subacidity brine electrolysis that keeps suitable pH.
And, can substantially generate the subacidity brine electrolysis that keeps suitable pH by the device of implementing preceding method is provided.
During electrolysis dilute hydrochloric acid, electrolytic condition need not fixing especially in undivided cell.For example, electrolysis voltage and concentration of hydrochloric acid can be from aspects such as electrolytic efficiency and device capbility or electrode lives, and appropriateness is adjusted.But the formation condition that electrode life or avoidance impurity generate should be made rational selection in the security and economy that generate water.For example, from aspect electrode life, current density is no more than 5A/dm
2Be advisable, electrolysis voltage then is advisable to be no more than 5V between its counter electrode.As for the mode of connection of electrolyzer and power supply, have acyclic type, multipole type with and hybrid, be feasible.Only, technically, generally the device that production capacity is little is with acyclic type, and the device that production capacity is big then is advisable with multipole type.
The concentration of dilute hydrochloric acid, on the principle arbitrary concentration all can, but if use high density, because the hydrochloric acid with respect to certain integrating current value adds up to usage quantity to reduce, the subacidity brine electrolysis pH that is generated can improve, otherwise, if use low-concentration hcl, then pH has the trend of reduction.And, if use excessive concentrations, accelerate the consumption of electrode metal sometimes, also may strengthen other are installed the influence of materials and shorten device lifetime.Again moreover, if use high density,, so that also can increase detrimentally affect on every side because the generating capacity of the hydrogen chloride gas of generation such as raw material tank also can increase.Considering this situation, is below 10%, to be advisable more than 1% with mass percent.
Alkaline metal salt or alkaline earth salt are if the salt of processable can quantitatively make an addition to former water with its solution.If the salt of insoluble can adopt to make former water by the solid salt deposit, or the suspension of salt is quantitatively made an addition to the method for former water.
If purpose at the pH of appropriateness maintenance subacidity brine electrolysis, then the interpolation opportunity of alkaline metal salt or alkaline earth salt, after electrolytic solution is mixed in former water, also can generate the subacidity brine electrolysis of tool appropriateness pH.But, in the subacidity electrolyzed water producing method as food additives, do not stipulate this method, so, must add in the former water before adding electrolytic solution according to disclosed if generation can be used as the subacidity brine electrolysis of food additives.
If will make the former water after alkaline metal salt or alkaline earth salt add, the defined of the water law from the beginning water quality standard that is met record in province's order, must adjust the composition of analyzing this former water in advance, determine addition again, to guarantee to increase the composition that changed behind the salt in its benchmark, in the scope of this addition, its benchmark is interior to get final product so that the pH of the subacidity brine electrolysis that is generated meets to adjust addition then.
There are various alkaline metal salts or alkaline earth salt to be designated as food additives, for example, can use yellow soda ash, Sodium Hydrogen Carbonate, salt of wormwood, lime carbonate etc.
By alkaline metal salt or alkaline earth salt continuity ground being added with certain ratio at the former water yield that flows down, but continuity ground generates the subacidity brine electrolysis of adjusted pH.For this reason, can determine the addition of alkaline metal salt or alkaline earth salt in advance according to former water hardness and effective chlorine density.Its method, for example add alkaline metal salt or alkaline earth salt one by one while measuring its pH in the subacidity brine electrolysis that generates not adding alkaline metal salt or alkaline earth salt, so that learn the addition when appropriate pH occurring, determine addition again corresponding to growing amount.
Detect the pH of subacidity brine electrolysis by continuity, addition with control alkaline metal salt or alkaline earth salt, the pH of subacidity brine electrolysis is maintained more than 5 below 6.5, can adopt a kind of for example following method to realize, promptly in the back, place of former water mixing devices such as static mixer are set at mixed electrolytic solution, in its back pH inductor block etc. is set again, obtain the difference that is equivalent to be detected the hydrogen ion concentration of pH and is equivalent to the hydrogen ion concentration of target pH, utilize a kind of signal relevant again, add the amount of infusion of pump with the control salt with this difference.
In the aforesaid method, not only available low-hardness water, the artificial low-hardness water that generates such as also available various filtered water or ultrafiltration water generates the subacidity brine electrolysis; Sometimes for specific purposes such as food mfg or medicament manufacturings, can adopt water after certain impurity that contains in the former water removed as raw material, be this type of example.
Description of drawings
See also the detailed description and the accompanying drawing thereof of following relevant preferred embodiment of the present invention, can further understand technology contents of the present invention and purpose effect thereof; The accompanying drawing of relevant this embodiment is:
Fig. 1 is for implementing the setting drawing that the inventive method is used;
Reference numeral:
1, constant flow valve; 2, reverse checkvalve; 3, static mixer; 4, raw material tank; 5, feedstock pump; 6, electrolyzer; 7, alkaline groove; 8, alkaline pump; 9, main pipe arrangement.
Embodiment
Below will describe the present invention in detail with embodiment.Fig. 1 is the schema of the device implementing the inventive method and use.This device capbility can per hour generate 300 liters subacidity brine electrolysis.The running of this device is as follows: former water is controlled by constant flow valve 1 in main pipe arrangement 9, flows down with 1 hour flow of 300 liters.It is that 6% hydrochloric acid is to be fed in the electrolyzer 6 by feedstock pump 5 that mass percentage concentration in raw material tank 4 is stayed in storage, and all electrolytes all are mixed in the former water.This electrolyzer 6 is constituted with multipole type two grooves.Alkaline metal salt or alkaline earth salt are solution, and storage is stayed in alkaline groove 7, by alkaline pump 8 it is mixed in the former water.Electrolytic control method adopts the method for controlling the hydrochloric acid supply, to keep the current value that sets.
Use device shown in Figure 1, the former water of calcium concn 30ppm uses 6% hydrochloric acid, and with electrolysis voltage 6V, Faradaic current 9A does not add basic solution and generates the subacidity brine electrolysis, has obtained pH4.3, the brine electrolysis of effective chlorine density 26ppm.
Secondly, the solution of potassium carbonate of 0.5 volumetric molar concentration in alkaline groove is stayed in storage, make an addition to former water with the flow of 52ml/h, generate the subacidity brine electrolysis equally, stably obtained pH6.2, the subacidity brine electrolysis of effective chlorine density 28ppm with alkaline pump.
Use device shown in Figure 1, modulated the subacidity brine electrolysis with the water of calcium carbonate hardness 8ppm.The yellow soda ash that has wherein used 1 volumetric molar concentration is as basic solution.Except condition shown here, other are identical with embodiment 1.At first, with electrolysis voltage 6.4V, Faradaic current 9A carries out electrolysis, does not add basic solution and when generating, has obtained pH3.9, the subacidity brine electrolysis of effective chlorine density 29ppm.
Next,, basic solution is made an addition to former water with the flow of 51ml/h, obtained pH5.4, the subacidity brine electrolysis of effective chlorine density 30ppm with similarity condition.
Claims (9)
1. the generation method of a subacidity brine electrolysis is characterized in that: dilute hydrochloric acid with in addition electrolysis of undivided cell, again with former water dilute electrolyte, is added alkaline metal salt or alkaline earth salt in the described former water.
2. the generation method of subacidity brine electrolysis as claimed in claim 1 is characterized in that: the raw water quality behind interpolation alkaline metal salt or the alkaline earth salt meets the water quality standard of the defined of water law from the beginning of record in province's order.
3. the generation method of subacidity brine electrolysis as claimed in claim 1 or 2 is characterized in that: described alkaline metal salt or alkaline earth salt are food additives.
4. as the generation method of each described subacidity brine electrolysis of claim 1-3, it is characterized in that: described alkaline metal salt or alkaline earth salt are in salt of wormwood, potassium bicarbonate, yellow soda ash, Sodium Hydrogen Carbonate, lime carbonate, calcium hydroxide, the magnesiumcarbonate one or more.
5. as the generation method of each described subacidity brine electrolysis of claim 1-4, it is characterized in that: the pH of the subacidity brine electrolysis of described generation is more than 5 below 6.5.
6. as the generation method of each described subacidity brine electrolysis of claim 1-5, it is characterized in that: described alkaline metal salt or alkaline earth salt are to add in the ratio of former water.
7. as the generation method of claim 1-6 subacidity brine electrolysis as described in each, it is characterized in that: the addition of described alkaline metal salt or alkaline earth salt detects the pH of subacidity brine electrolysis according to continuity and is controlled, and the pH of described subacidity brine electrolysis is more than 5 below 6.5.
8. subacidity brine electrolysis, it generates by each described generation method of claim 1-7.
9. the generating apparatus of a subacidity brine electrolysis is in order to implement each described method of claim 1-7.
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| CN201010154753XA CN102205997A (en) | 2010-03-31 | 2010-03-31 | Subacid electrolysis water, generating method and apparatus thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159350A (en) * | 2013-03-15 | 2013-06-19 | 浙江大学 | Micro acidic electrolysis water generating equipment based on food grade raw materials |
| CN104605273A (en) * | 2015-02-15 | 2015-05-13 | 河北科技大学 | Millet germinated brown rice rich in gamma-aminobutyric acid and preparation method of millet germinated brown rice |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0802164A1 (en) * | 1995-11-08 | 1997-10-22 | Morinaga Engineering Co., Ltd. | Process for producing bactericide, apparatus therefor, and bactericide |
| CN101367570A (en) * | 2007-08-17 | 2009-02-18 | 株式会社北越 | Subacid electrolysis water generating method and apparatus |
-
2010
- 2010-03-31 CN CN201010154753XA patent/CN102205997A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0802164A1 (en) * | 1995-11-08 | 1997-10-22 | Morinaga Engineering Co., Ltd. | Process for producing bactericide, apparatus therefor, and bactericide |
| CN101367570A (en) * | 2007-08-17 | 2009-02-18 | 株式会社北越 | Subacid electrolysis water generating method and apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159350A (en) * | 2013-03-15 | 2013-06-19 | 浙江大学 | Micro acidic electrolysis water generating equipment based on food grade raw materials |
| CN103159350B (en) * | 2013-03-15 | 2014-02-26 | 浙江大学 | Micro acidic electrolysis water generating equipment based on food grade raw materials |
| CN104605273A (en) * | 2015-02-15 | 2015-05-13 | 河北科技大学 | Millet germinated brown rice rich in gamma-aminobutyric acid and preparation method of millet germinated brown rice |
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Application publication date: 20111005 |