CN104001378A - Cleaning method for filter core used for hydrogen peroxide production process - Google Patents
Cleaning method for filter core used for hydrogen peroxide production process Download PDFInfo
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- CN104001378A CN104001378A CN201310062247.1A CN201310062247A CN104001378A CN 104001378 A CN104001378 A CN 104001378A CN 201310062247 A CN201310062247 A CN 201310062247A CN 104001378 A CN104001378 A CN 104001378A
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- filter core
- cleaning method
- hydrogen peroxide
- peroxide production
- production technology
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Abstract
The invention relates to a cleaning method for a filter core used for a hydrogen peroxide production process. The cleaning method comprises the steps of immersing the filter core in a solvent for 1-2 h; then cleaning for 0.5-2h in an alkali solution; then neutralizing in an acid solution; and finally rinsing for 3-5 times in deionized water. Compared with a conventional cleaning method, the cleaning method provided by the invention has the advantages of being simple, convenient, cost-saving and time-saving.
Description
Technical field
The present invention relates to a kind of hydrogen peroxide and produce, especially relate to a kind of filter element cleaning method in hydrogen peroxide process.
Background technology
Hydrogen peroxide is colourless penetrating odor liquid, belongs to strong oxidizer, easily decompose, and under the conditions such as alkalescence, reducing substances and metal ion, vigorous reaction, decomposition or even blast.Hydrogen peroxide is again good organic peroxide, in the many-side field that has a wide range of applications, it has efficient quick sterilization effect, the multiple germ such as kill bacteria, gemma fungi, saccharomycete fast, thereby can be used as the disinfectant of infectious disease, drinking water, food etc.
In the production process of hydrogen peroxide, in technique, in order to prevent that catalyst converter from entering in the reactor in downstream, need to catalyst, stop with filter, but filter is used of a specified duration, percent of pass will decline, and just needs this time to clean.Existing method need to be transported to filter former factory and clean, and sometimes filter is import equipment, send cleaning once probably to need back and forth about half a year, and the time is oversize, has affected the running of producing.
Summary of the invention
Object of the present invention be exactly in order to overcome the defect that above-mentioned prior art exists, provide a kind of simple and convenient, save the cleaning method of filter core for cost, time-saving hydrogen peroxide production technology.
Object of the present invention can be achieved through the following technical solutions: the cleaning method of filter core for a kind of hydrogen peroxide production technology, it is characterized in that, first filter core is placed in to solvent and soaks 1～2h, then be placed in alkali lye and clean 0.5～2h, be placed in again acid solution and neutralize, be finally placed in deionized water rinsing 3～5 times.
Described solvent comprises benzene or trimethylbenzene.
Described alkali lye is that mass concentration is 3～10% NaOH.
Described acid solution is that mass concentration is 2～8% HNO
3.
Described filter core passes through solvent soaking successively, and alkali lye and acid solution washing time are 1～3 time.
Compared with prior art, the present invention has the following advantages: clean raw material and equipment simple and easy to get, voluntarily assembly service sink, clean on the spot, greatly saved cost, greatly saved the time of turnover back and forth, made the maintenance project of factory and arrange more flexible.
Accompanying drawing explanation
Fig. 1 is cleaning process flow figure of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As described in Figure 1, the cleaning method of filter core for a kind of hydrogen peroxide production technology, is first placed in solvent benzol by filter core and soaks 1h, be then placed in alkali lye and be mass concentration and be 3% NaOH and clean 0.5h, then to be placed in acid solution is that mass concentration is 2% HNO
3neutralization, is finally placed in deionized water rinsing 3 times.
Embodiment 2
The cleaning method of filter core for hydrogen peroxide production technology, is first placed in solvent benzol by filter core and soaks 2h, be then placed in alkali lye and be mass concentration and be 10% NaOH and clean 2h, then to be placed in acid solution is that mass concentration is 8% HNO
3neutralization, and then be once placed in solvent benzol and soak 2h, is then placed in alkali lye and is mass concentration and be 10% NaOH and clean 2h, then to be placed in acid solution be that mass concentration is 8% HNO
3neutralization, circulation twice, is finally placed in deionized water rinsing 5 times.
Embodiment 3
As described in Figure 1, the cleaning method of filter core for a kind of hydrogen peroxide production technology, is first placed in filter core solvent trimethylbenzene and soaks 1.5h, be then placed in alkali lye and be mass concentration and be 5% NaOH and clean 1h, then to be placed in acid solution is that mass concentration is 5% HNO
3neutralization, circulates three times successively, is finally placed in deionized water rinsing 4 times.
Claims (5)
1. the cleaning method of filter core for hydrogen peroxide production technology, is characterized in that, first filter core is placed in to solvent and soaks 1～2h, is then placed in alkali lye and cleans 0.5～2h, then be placed in acid solution and neutralize, and is finally placed in deionized water rinsing 3～5 times.
2. the cleaning method of filter core for a kind of hydrogen peroxide production technology according to claim 1, is characterized in that, described solvent comprises benzene or trimethylbenzene.
3. the cleaning method of filter core for a kind of hydrogen peroxide production technology according to claim 1, is characterized in that, described alkali lye is that mass concentration is 3～10% NaOH.
4. the cleaning method of filter core for a kind of hydrogen peroxide production technology according to claim 1, is characterized in that, described acid solution is that mass concentration is 2～8% HNO
3.
5. the cleaning method of filter core for a kind of hydrogen peroxide production technology according to claim 1, is characterized in that, described filter core passes through solvent soaking successively, and alkali lye and acid solution washing time are 1～3 time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310062247.1A CN104001378A (en) | 2013-02-27 | 2013-02-27 | Cleaning method for filter core used for hydrogen peroxide production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310062247.1A CN104001378A (en) | 2013-02-27 | 2013-02-27 | Cleaning method for filter core used for hydrogen peroxide production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104001378A true CN104001378A (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310062247.1A Pending CN104001378A (en) | 2013-02-27 | 2013-02-27 | Cleaning method for filter core used for hydrogen peroxide production process |
Country Status (1)
| Country | Link |
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| CN (1) | CN104001378A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107175232A (en) * | 2017-05-27 | 2017-09-19 | 赵志强 | A kind of cleaning of mine hydraulic support backwashing filter core |
| CN108079668A (en) * | 2016-11-22 | 2018-05-29 | 东莞新科技术研究开发有限公司 | The cleaning method of filter screen |
| CN113398665A (en) * | 2021-08-05 | 2021-09-17 | 苏州晶瑞化学股份有限公司 | Method for cleaning filter element for high-purity hydrogen peroxide production process |
-
2013
- 2013-02-27 CN CN201310062247.1A patent/CN104001378A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108079668A (en) * | 2016-11-22 | 2018-05-29 | 东莞新科技术研究开发有限公司 | The cleaning method of filter screen |
| CN107175232A (en) * | 2017-05-27 | 2017-09-19 | 赵志强 | A kind of cleaning of mine hydraulic support backwashing filter core |
| CN113398665A (en) * | 2021-08-05 | 2021-09-17 | 苏州晶瑞化学股份有限公司 | Method for cleaning filter element for high-purity hydrogen peroxide production process |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140827 |