CN1508291A - Method for preparing perchlorate by electrolysis of chlorate - Google Patents
Method for preparing perchlorate by electrolysis of chlorate Download PDFInfo
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- CN1508291A CN1508291A CNA021398410A CN02139841A CN1508291A CN 1508291 A CN1508291 A CN 1508291A CN A021398410 A CNA021398410 A CN A021398410A CN 02139841 A CN02139841 A CN 02139841A CN 1508291 A CN1508291 A CN 1508291A
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Abstract
The invention discloses a method to prepare perchlorate by electrolyzation. Make the electrobaths is greater than or equal to 3 in series become a group and arrange according to graded position difference, make the electrolyte flow from the high-position electrobath to the highest-position one, after electrolyzed, overflow into next one for electrolyzation, then overflow into next one, and electrolyzed in the final one to obtain the finished electrolyte, and control the conversion within 65-85%, to use the finished electrolyte to produce perchlorate product. It improves the current efficiency by above 15%, each ton of perchlorate can reduce electric consumption by 800kw.h, and the output of the perchlorate can be raised by 15% above.
Description
Technical field:
The present invention relates to a kind of method for preparing perchlorate by chlorate electrolysis.
Background technology:
The existing method for preparing perchlorate by chlorate electrolysis is included in the saturated solution of oxymuriate, the control pH value is that 4-8, control electrolysis temperature are the condition below 80 ℃, make anode, carry out electrolysis with stainless steel electrode as negative electrode with ti-supported lead dioxide electric pole or pottery base lead dioxide electrode or platinum electrode, the electrolysis that obtains through electrolysis is finished liquid and is used to produce the perchlorate product.Its electrolytic method has single groove continuous electrolysis and multiple-grooved cyclic electrolysis, single groove continuous electrolysis is owing to the concentration of oxymuriate in the electrolyzer is low, current efficiency is low, and each electrolyzer independent control, thereby the reference mark is many, and the multiple-grooved cyclic electrolysis is batch production, can not carry out continuously, production cycle is long, and the general production cycle is more than 240 hours.The common problem that these two kinds of methods exist is that current efficiency is low, power consumption height, product cost height, this is because the transformation efficiency of sodium chlorate must reach certain requirement in the electrolytic process, usually more than 85%, generally be controlled at about 95%, but because the efficient of electric current descends with density of sodium chlorate, transformation efficiency is brought up to 95% the process current efficiency less than 40% from 85%, so general total current efficiency has only about 60%, cause the power consumption height, this point was once reported in " inorganic chemicals industry first phase calendar year 2001 ".
Summary of the invention:
The object of the present invention is to provide a kind ofly can improve current efficiency greatly, reduce power consumption, reduce product cost, production control point less, can shorten a kind of method for preparing perchlorate by chlorate electrolysis of production cycle greatly.
Technical scheme of the present invention is included in the saturated solution of oxymuriate, the control pH value is 4-8, the control electrolysis temperature is the condition below 80 ℃, make anode with ti-supported lead dioxide electric pole or pottery base lead dioxide electrode or platinum electrode, carry out electrolysis with stainless steel as negative electrode, groove is pressed the volt for 3.5-6, the electrolysis that obtains through electrolysis is finished liquid and is used to produce the perchlorate product, it is characterized in that electrolytic method is to be connected into one group more than or equal to the electrolyzer more than 3, electrolyzer is by the stepped arrangement of potential difference, electrolytic solution flows into the extreme higher position electrolyzer from cell liquor head tank, overflow enters the next position electrolyzer continuation electrolysis after electrolysis, and then overflow enters next electrolyzer, obtain electrolysis through last groove electrolysis and finish liquid, the transformation efficiency of control electrolysis terminal point oxymuriate is just finished electrolysis liquid and is used to produce the perchlorate product between 65-85%, production control point becomes one every group by one of original every groove like this, form continuous electrolysis simultaneously, is 20-36 hour from the beginning electrolysis to the time that liquid is finished in the qualified electrolysis of outflow, and electrolysing period shortens greatly.
Because the transformation efficiency of staged electrolysis of implementing and control sodium chlorate can make current efficiency improve more than 15%, product per ton can reduce power consumption 800kw.h, has realized the continuous electrolysis under the high current efficiency, and the output of perchlorate can improve more than 15%.Electrolysing period shortens greatly.Because operating point control reduces, and also greatly reduces the production operation difficulty.
Embodiment:
Embodiment 1
15 tons of the saturated solutions of raw material sodium chlorate, the control pH value is 6, the control electrolysis temperature is under 55 ℃ the condition, make anode with the pottery base lead dioxide electrode, make negative electrode with stainless steel electrode, and six electrolyzers are connected into one group, electrolyzer is by the stepped arrangement of potential difference, it is 5 volts that groove is pressed, electrolytic solution flows into the extreme higher position electrolyzer from header tank, overflow enters the next position electrolyzer and continues electrolysis, and then overflow enters next electrolyzer, and the transformation efficiency of control electrolysis terminal point oxymuriate is 70%, and electrolysis time is 30 hours, liquid and Potcrate reaction production potassium perchlorate are finished in electrolysis, and mother liquor returns electrowinning process after treatment and carries out electrolysis again.Electrowinning process production control point becomes one by original 6 like this, forms continuous electrolysis simultaneously, and electrolysing period has shortened more than 200 hours than original method.Power consumption minimizing per ton 800kw.h, 8 tons of output potassium perchlorates.
Embodiment 2
12 tons of the saturated solutions of raw material sodium chlorate, the control pH value is 7, the control electrolysis temperature is under 65 ℃ the condition, make anode with the pottery base lead dioxide electrode, make negative electrode with stainless steel electrode, and five electrolyzers are unified into one group, electrolyzer is by the stepped arrangement of potential difference, it is 4 volts that groove is pressed, electrolytic solution flows into the extreme higher position electrolyzer from header tank, overflow enters the next position electrolyzer and continues electrolysis, and then overflow enters next electrolyzer, and the transformation efficiency of control electrolysis terminal point oxymuriate is 72%, and electrolysis time is 25 hours, liquid and Potcrate reaction production potassium perchlorate are finished in electrolysis, and mother liquor returns electrowinning process after treatment and carries out electrolysis again.Electrowinning process production control point becomes one by original 5 like this, forms continuous electrolysis simultaneously, and electrolysing period has shortened more than 200 hours than original method.Power consumption minimizing per ton 800kw.h, 6.5 tons of output potassium perchlorates.
Claims (1)
1. method for preparing perchlorate by chlorate electrolysis, be included in the saturated solution of oxymuriate, the control pH value is 5-7, the control electrolysis temperature is below 80 ℃, make anode with ti-supported lead dioxide electric pole or pottery base lead dioxide electrode or platinum electrode, carry out electrolysis with stainless steel electrode as negative electrode, groove is pressed the volt for 3.5-6, the electrolysis that obtains through electrolysis is finished liquid and is used to produce the perchlorate product, it is characterized in that electrolytic method is to be connected into one group more than or equal to the electrolyzer more than 3, electrolyzer is by the stepped arrangement of potential difference, electrolytic solution flows into the extreme higher position electrolyzer from cell liquor head tank, overflow enters the next position electrolyzer continuation electrolysis after electrolysis, and then overflow enters next electrolyzer, obtain electrolysis through last groove electrolysis and finish liquid, and the transformation efficiency of control electrolysis terminal point sodium chlorate is just finished electrolysis liquid and is used to produce the perchlorate product between 65-85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139841 CN1243126C (en) | 2002-12-18 | 2002-12-18 | Method for preparing perchlorate by electrolysis of chlorate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139841 CN1243126C (en) | 2002-12-18 | 2002-12-18 | Method for preparing perchlorate by electrolysis of chlorate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1508291A true CN1508291A (en) | 2004-06-30 |
| CN1243126C CN1243126C (en) | 2006-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02139841 Ceased CN1243126C (en) | 2002-12-18 | 2002-12-18 | Method for preparing perchlorate by electrolysis of chlorate |
Country Status (1)
| Country | Link |
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| CN (1) | CN1243126C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102732908A (en) * | 2012-07-17 | 2012-10-17 | 永州九星化工有限公司 | External circulation electrolyser |
| CN102912372A (en) * | 2012-11-02 | 2013-02-06 | 福建师范大学 | Stepped in-series overflow process succinic acid preparation method on basis of diaphragm-free electrolytic cell |
| CN103103553A (en) * | 2012-12-13 | 2013-05-15 | 苏州新区化工节能设备厂 | Working method of chlorate electrolysis device |
| CN103409770A (en) * | 2013-08-01 | 2013-11-27 | 株洲市强盛电极有限公司 | Perchlorate electrolyzer and electrolytic process |
| CN104271809A (en) * | 2012-04-23 | 2015-01-07 | 凯密迪公司 | Surface modified stainless steel cathode for electrolyser |
| CN106086929A (en) * | 2016-08-28 | 2016-11-09 | 江西省铜鼓县永宁化工有限责任公司 | Prepare the electrolytic cell assembly of potassium hyperchlorate |
| CN110129820A (en) * | 2019-06-25 | 2019-08-16 | 山东瑞克环境科技有限公司 | Calcium hypochlorite, calcium chlorate, Calcium perchlorate preparation facilities and method |
-
2002
- 2002-12-18 CN CN 02139841 patent/CN1243126C/en not_active Ceased
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104271809A (en) * | 2012-04-23 | 2015-01-07 | 凯密迪公司 | Surface modified stainless steel cathode for electrolyser |
| CN104271809B (en) * | 2012-04-23 | 2018-04-10 | 凯密迪公司 | The stainless steel cathode that surface for electrolyzer is modified |
| CN102732908A (en) * | 2012-07-17 | 2012-10-17 | 永州九星化工有限公司 | External circulation electrolyser |
| CN102912372A (en) * | 2012-11-02 | 2013-02-06 | 福建师范大学 | Stepped in-series overflow process succinic acid preparation method on basis of diaphragm-free electrolytic cell |
| CN103103553A (en) * | 2012-12-13 | 2013-05-15 | 苏州新区化工节能设备厂 | Working method of chlorate electrolysis device |
| CN103103553B (en) * | 2012-12-13 | 2015-09-09 | 苏州赛斯德工程设备有限公司 | A kind of method of work of chlorate electrolysis device |
| CN103409770A (en) * | 2013-08-01 | 2013-11-27 | 株洲市强盛电极有限公司 | Perchlorate electrolyzer and electrolytic process |
| CN106086929A (en) * | 2016-08-28 | 2016-11-09 | 江西省铜鼓县永宁化工有限责任公司 | Prepare the electrolytic cell assembly of potassium hyperchlorate |
| CN106086929B (en) * | 2016-08-28 | 2018-07-24 | 江西永宁科技有限责任公司 | Prepare the electrolytic cell assembly of potassium hyperchlorate |
| CN110129820A (en) * | 2019-06-25 | 2019-08-16 | 山东瑞克环境科技有限公司 | Calcium hypochlorite, calcium chlorate, Calcium perchlorate preparation facilities and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1243126C (en) | 2006-02-22 |
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Decision date of declaring invalidation: 20110408 Decision number of declaring invalidation: 16302 Granted publication date: 20060222 |