CN102502507A - Preparation device and technology for chlorine dioxide - Google Patents
Preparation device and technology for chlorine dioxide Download PDFInfo
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- CN102502507A CN102502507A CN2011103450938A CN201110345093A CN102502507A CN 102502507 A CN102502507 A CN 102502507A CN 2011103450938 A CN2011103450938 A CN 2011103450938A CN 201110345093 A CN201110345093 A CN 201110345093A CN 102502507 A CN102502507 A CN 102502507A
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Abstract
The invention discloses a preparation device and a preparation technology for chlorine dioxide. The preparation device comprises reactors and a chlorine dioxide cooler, wherein the reactors are at least divided into three levels, namely a primary reactor, a secondary reactor and a tertiary reactor; the tops of the primary reactor, the secondary reactor and the tertiary reactor are communicated through a gas pipeline, and the bottoms of the primary reactor, the secondary reactor and the tertiary reactor are communicated through a liquid pipeline; the primary reactor is also connected with a pre-mixer; the secondary reactor is also connected with a fan; the tertiary reactor is sequentially connected with a concentration system, a solid-liquid separator, a mother solution tank and a mixture return system and connected with the primary reactor after being connected with the mixture return system; and the primary reactor, the secondary reactor and the tertiary reactor are connected with the chlorine dioxide cooler. Compared with the prior art of China, the invention has the advantages of simple process flow, high production capacity and reaction efficiency, low consumption of raw materials, high yield change adaptability, high chlorine dioxide purity, low chlorine content and environment friendliness.
Description
Technical field
The present invention relates to the preparation field of dioxide peroxide, be specifically related to a kind of dioxide peroxide little negative pressure aeration preparation technology and device.
Background technology
Dioxide peroxide because its to have a sterilizing ability strong, to human body and animal is safe from harm and environment do not caused characteristics such as secondary pollution and enjoy people's favor.Dioxide peroxide is not only and is not a kind ofly produced carcinogenic Broadspectrum environment-protective type disinfection sanitizer, but also shows significant effect at aspects such as sterilization, food fresh keeping, deodorizing.Dioxide peroxide can also be used for bleaching, like can substituting with dioxide peroxide of the former employing chlorine bleaching of weaving and papermaking.And at present, national regulation forbids that project begun newly adopts the liquid chlorine bleaching process, and the bleaching technology that does not therefore have liquid chlorine obtains large-scale popularization.
Among numerous in the world dioxide peroxide preparing methods,, can be divided into chemical method and electrolytic process if divide from method; If divide, can be divided into VAL-DROP method and Textone method from raw material; If divide from reductive agent, can be divided into three major types: Mathieson method, Solvey method and R method, wherein the R method is a series methods, develops into the R13 method from R1 at present.Make a general survey of dioxide peroxide Development of Preparation Technology course and can know that high negative pressure technology has all obtained good development, that particularly represent current international main flow circuit is R8 method (SVP), just belong to high negative pressure technology, and little negative pressure technology is not promoted the use of at home.And domestic because middle-size and small-size paper plant is more, also all adopt the chlorine bleaching, market demand is very big.Thereby the bleaching that exploitation the type device is used for middle-size and small-size paper plant can reduce environmental pollution, improves pulp quality.Be used for water factory's sterilization, can avoid producing carcinogenic substance, guarantee the safety of water quality.So, the necessary exploitation of carrying out the type device.
Summary of the invention
The present invention has overcome the deficiency of prior art, provides a kind of efficient high dioxide peroxide preparation facilities and technology thereof.
For solving above-mentioned technical problem, the present invention adopts following technical scheme:
A kind of dioxide peroxide preparation facilities comprises reactor drum, dioxide peroxide water cooler, absorption unit, mother liquor concentrating and separating device, and said reactor drum is divided into three grades at least, comprises that one-level answers device, second reactor and three reactor; Said one-level answers the top between device, second reactor and the three reactor to be communicated with through gas piping, and the bottom is communicated with through liquid line; Said A reactor also is connected with premixed device; Said second reactor also is connected with blower fan; Said three reactor is connected with concentration systems, solid-liquid separation, mother liquor tank and back-mixing system in turn; After the back-mixing system, be connected with A reactor again; Said one-level answers device, second reactor and three reactor all to be connected with the dioxide peroxide water cooler; Said dioxide peroxide water cooler connects absorption system and dioxy flower chlorine storage tank more successively, and said absorption system also is connected with dioxy flower chlorine storage tank through exhaust gas recovery system, activation pot successively.
In order to realize the present invention better, further technical scheme is;
As preferably: the inlet of above-mentioned premixed device is provided with the VAL-DROP volume pump.
As preferably: the inlet of above-mentioned premixed device is provided with the ydrogen peroxide 50 volume pump.
As preferably: above-mentioned one-level answers the inlet of device to be provided with the sulfuric acid volume pump.
As preferably: above-mentioned one-level is answered and all is provided with the air distribution plate on device, second reactor and the three reactor, is drilled with the hole on the said air distribution plate.
As preferably: be provided with reactive system and absorption tower in the above-mentioned absorption system.
As preferably: above-mentioned reactor drum also is connected with detection of negative pressure system and safe on-line detecting system.
As preferably: the chlorine dioxide concentration detecting line sensor is installed in the outlet on above-mentioned absorption tower.
The present invention can also be:
A kind of preparation technology who uses the dioxide peroxide of above-mentioned dioxide peroxide preparation facilities may further comprise the steps:
Step 1, in proportion three kinds of raw materials of VAL-DROP, sulfuric acid, ydrogen peroxide 50 are added reactor drum, wherein VAL-DROP and ydrogen peroxide 50 add A reactor after through the premixed device premix, and the sulfuric acid admission port is communicated with the adding reactor drum with the reactor drum aeration opening.
Step 2, after forming negative pressure in each stage reactor, air gets in the reactor drum through the hole on the air distribution plate of each stage reactor, is used for blowing down the ClO of liquid
2ClO with the diluting reactor upper space
2, and make reaction raw materials be able to abundant stirring, reaction rapidly.
Step 3, the chlorine dioxide that generates in the producer is sent into the dioxide peroxide water cooler; Reaction residue is isolated acid saltcake through concentration systems, solid-liquid separation system, and the mother liquor after concentration is collected the back through mother liquor tank and returned to A reactor again through the back-mixing system.
Step 4, dioxide peroxide get in the absorption system, and absorption system is inner to form little negative pressure through the blower fan suction, will pass through the chlorine dioxide bulk absorption of dioxide peroxide water cooler through reactive system, make first ClO 2 solution.
Step 5, the liquid after the reactive system tail gas discharged is handled through exhaust gas recovery system get into activation pot, through the priming reaction of activation pot, make second ClO 2 solution.
Step 6, first ClO 2 solution and second ClO 2 solution gather entering dioxide peroxide storage tank and supply to use.
Technical scheme further is: the temperature of reaction of above-mentioned A reactor is controlled at 52-55 ℃, and the temperature of second reactor and three reactor is controlled at 70-75 ℃.
Compared with prior art, the invention has the beneficial effects as follows:
The domestic relatively prior art of the present invention is compared, and technical process is simple, throughput and reaction efficiency is high, raw material consumption is low, change of production flexibility is big, purity of chlorine dioxide is high, chlorine content is few, does not produce environmental pollution.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
Below in conjunction with embodiment the present invention is done to specify further, but embodiment of the present invention is not limited thereto.
As shown in Figure 1, a kind of dioxide peroxide preparation facilities comprises reactor drum and dioxide peroxide water cooler, and said reactor drum is divided into three grades at least, comprises that one-level answers device, second reactor and three reactor; Said one-level answers the top between device, second reactor and the three reactor to be communicated with through gas piping, and the bottom is communicated with through liquid line; Said A reactor also is connected with premixed device; Said second reactor also is connected with blower fan; Said three reactor is connected with concentration systems, solid-liquid separation, mother liquor tank and back-mixing system in turn; After the back-mixing system, be connected with A reactor again; Said one-level answers device, second reactor and three reactor all to be connected with the dioxide peroxide water cooler; Said dioxide peroxide water cooler connects absorption system and dioxy flower chlorine storage tank more successively, and said absorption system also is connected with dioxy flower chlorine storage tank through exhaust gas recovery system, activation pot successively.
The inlet of above-mentioned premixed device is provided with the VAL-DROP volume pump; The inlet of above-mentioned premixed device is provided with the ydrogen peroxide 50 volume pump; Above-mentioned one-level answers the inlet of device to be provided with the sulfuric acid volume pump; Above-mentioned one-level is answered and all is provided with the air distribution plate on device, second reactor and the three reactor, is drilled with the hole on the said air distribution plate; Be provided with reactive system and absorption tower in the above-mentioned absorption system; Above-mentioned reactor drum also is connected with the detection of negative pressure system; The chlorine dioxide concentration detecting line sensor is installed in the outlet on above-mentioned absorption tower.
A kind of preparation technology who uses the dioxide peroxide of above-mentioned dioxide peroxide preparation facilities may further comprise the steps:
Step 1, in proportion three kinds of raw materials of VAL-DROP, sulfuric acid, ydrogen peroxide 50 are added reactor drum, wherein VAL-DROP and ydrogen peroxide 50 add A reactor after through the premixed device premix, and the sulfuric acid admission port is communicated with the adding reactor drum with the reactor drum aeration opening.
The reaction that following reaction formula is explained can take place once in producer, contacting just in VAL-DROP, three kinds of raw materials of sulfuric acid and ydrogen peroxide 50:
2NaClO
3+H
2O
2+2H
2SO
4→2ClO
2+2NaHSO
4+2H
2O+O
2
Add heat(ing)generator, and the temperature of producer is controlled at 52-55 ℃, the temperature of second reactor and three reactor is controlled at 70-75 ℃.
Step 2, after forming negative pressure in each stage reactor, air gets in the reactor drum through the hole on the air distribution plate of each stage reactor, is used for blowing down the ClO of liquid
2ClO with the diluting reactor upper space
2, and make reaction raw materials be able to abundant stirring, reaction rapidly.
Step 3, the chlorine dioxide that generates in the producer is sent into the dioxide peroxide water cooler, the most of water vapour in the gas is condensed, the concentration of dioxide peroxide is improved; Reaction residue is isolated acid saltcake through concentration systems, solid-liquid separation system, and the mother liquor after concentration is collected the back through mother liquor tank and returned to A reactor again through the back-mixing system.
Before chlorine dioxide gets into the absorption tower; At first send into refrigerated water to the absorption tower according to quantity according to the output of user's setting and the concentration of ClO 2 solution; And the chlorine dioxide concentration detecting line sensor is installed in the outlet on absorption tower, real-time online detects strength of solution and also feeds back to system and regulate chilled-water flow.After chlorine dioxide gets into the absorption tower, absorb chlorine dioxide with 5 ℃-7 ℃ refrigerated waters, make dioxide peroxide liquid, and the flow that passes through to regulate refrigerated water is to obtain the dioxide peroxide liquid of different concns.
System's tail gas gets in the tail gas absorber in the absorption system, enters atmosphere behind the dioxide peroxide in the washing and recycling tail gas.In addition, then adopt paper mill alkalescence concentrated black liquid dissolved dilution through isolated sub product saltcake behind the mother liquor concentration tank, black liquor between pump to alkali recovery vehicle again, recycle section are made sulphur budget and are replenished and use.
Step 4, dioxide peroxide get in the absorption system, and absorption system is inner to form little negative pressure through the blower fan suction, will pass through the chlorine dioxide bulk absorption of dioxide peroxide water cooler through reactive system, make first ClO 2 solution.
Step 5, the liquid after the reactive system tail gas discharged is handled through exhaust gas recovery system get into activation pot, through the priming reaction of activation pot, make second ClO 2 solution.
Step 6, first ClO 2 solution and second ClO 2 solution gather entering dioxide peroxide storage tank and supply to use, and obtain the dioxide peroxide bleaching liquor of 6～8g/L concentration, supply with paper pulp production line bleaching use, and tail gas is qualified discharge after the tail gas absorption system absorbs.
Claims (10)
1. a dioxide peroxide preparation facilities comprises reactor drum and dioxide peroxide water cooler, and it is characterized in that: said reactor drum is divided into three grades at least, comprises that one-level answers device, second reactor and three reactor; Said one-level answers the top between device, second reactor and the three reactor to be communicated with through gas piping, and the bottom is communicated with through liquid line; Said A reactor also is connected with premixed device; Said second reactor also is connected with blower fan; Said three reactor is connected with concentration systems, solid-liquid separation, mother liquor tank and back-mixing system in turn; After the back-mixing system, be connected with A reactor again; Said one-level answers device, second reactor and three reactor all to be connected with the dioxide peroxide water cooler; Said dioxide peroxide water cooler connects absorption system and dioxy flower chlorine storage tank more successively, and said absorption system also is connected with dioxy flower chlorine storage tank through exhaust gas recovery system, activation pot successively.
2. dioxide peroxide preparation facilities according to claim 1 is characterized in that: the inlet of said premixed device is provided with the VAL-DROP volume pump.
3. dioxide peroxide preparation facilities according to claim 1 is characterized in that: the inlet of said premixed device is provided with the ydrogen peroxide 50 volume pump.
4. dioxide peroxide preparation facilities according to claim 1 is characterized in that: said one-level answers the inlet of device to be provided with the sulfuric acid volume pump.
5. dioxide peroxide preparation facilities according to claim 1 is characterized in that: said one-level is answered and all is provided with the air distribution plate on device, second reactor and the three reactor, is drilled with the hole on the said air distribution plate.
6. dioxide peroxide preparation facilities according to claim 1 is characterized in that: be provided with reactive system and absorption tower in the said absorption system.
7. dioxide peroxide preparation facilities according to claim 1 is characterized in that: said reactor drum also is connected with the detection of negative pressure system.
8. dioxide peroxide preparation facilities according to claim 6 is characterized in that: the chlorine dioxide concentration detecting line sensor is installed in the outlet on said absorption tower.
9. preparation technology who uses the dioxide peroxide of dioxide peroxide preparation facilities as claimed in claim 1 is characterized in that: may further comprise the steps:
Step 1, VAL-DROP, sulfuric acid, three kinds of raw materials of ydrogen peroxide 50 are added reactor drum in 1: 1: 0.5 ratio; Wherein VAL-DROP and ydrogen peroxide 50 add A reactor after through the premixed device premix, and the sulfuric acid admission port is communicated with the reactor drum aeration opening and adds A reactor and second reactor.
Step 2, after forming negative pressure in each stage reactor, air gets in the reactor drum through the hole on the air distribution plate of each stage reactor, is used for blowing down the ClO of liquid
2ClO with the diluting reactor upper space
2, and make reaction raw materials be able to abundant stirring, reaction rapidly.
Step 3, the chlorine dioxide that generates in the producer is sent into the dioxide peroxide water cooler; Reaction residue is isolated acid saltcake through concentration systems, solid-liquid separation system, and the mother liquor behind the removal saltcake after the concentration is collected the back through mother liquor tank and returned to A reactor again through the back-mixing system.
Step 4, dioxide peroxide get in the absorption system, and absorption system is inner to form little negative pressure through the blower fan suction, will pass through the chlorine dioxide bulk absorption of dioxide peroxide water cooler through reactive system, make first ClO 2 solution.
Step 5, the liquid after the reactive system tail gas discharged is handled through exhaust gas recovery system get into activation pot, through the priming reaction of activation pot, make second ClO 2 solution.
Step 6, first ClO 2 solution and second ClO 2 solution gather entering dioxide peroxide storage tank and supply to use.
10. the preparation technology of dioxide peroxide according to claim 9, it is characterized in that: the temperature of reaction of said A reactor is controlled at 52-55 ℃, and the temperature of second reactor and three reactor is controlled at 70-75 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103450938A CN102502507A (en) | 2011-11-04 | 2011-11-04 | Preparation device and technology for chlorine dioxide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103450938A CN102502507A (en) | 2011-11-04 | 2011-11-04 | Preparation device and technology for chlorine dioxide |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103572633A (en) * | 2013-11-13 | 2014-02-12 | 广西大学 | Chlorine dioxide bleaching method |
| CN104384521A (en) * | 2014-08-28 | 2015-03-04 | 江苏艾科勒科技有限公司 | Quick controllable nano-iron active material preparation device |
| CN106115624A (en) * | 2016-08-12 | 2016-11-16 | 深圳中科欧泰华环保科技有限公司 | Low acid amount prepares the method and device of chlorine dioxide |
| CN106145044A (en) * | 2015-04-16 | 2016-11-23 | 湖南源生环保设备有限公司 | A kind of chlorine dioxide generator |
| CN107902627A (en) * | 2017-11-29 | 2018-04-13 | 济南科琳宝环境科技有限公司 | A kind of high purity chlorine dioxide generator |
| CN108892105A (en) * | 2018-08-30 | 2018-11-27 | 南京理工大学 | A kind of chlorine dioxide generator and its operation method with gas-liquid separation Yu residual liquid recycling function |
| CN115010093A (en) * | 2022-07-18 | 2022-09-06 | 宁夏艾克坚机械设备有限公司 | Gaseous chlorine dioxide continuous production system and production method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3760065A (en) * | 1970-05-29 | 1973-09-18 | Erco Ind Ltd | Production of chlorine dioxide |
| CN1347841A (en) * | 2000-11-13 | 2002-05-08 | 山东大学 | Large high-purity chlorine dioxide generator and its production process |
| CN101081694A (en) * | 2007-05-31 | 2007-12-05 | 穆超碧 | Raw liquid for preparing chlorine dioxide, method and device for preparing chlorine dioxide |
-
2011
- 2011-11-04 CN CN2011103450938A patent/CN102502507A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3760065A (en) * | 1970-05-29 | 1973-09-18 | Erco Ind Ltd | Production of chlorine dioxide |
| CN1347841A (en) * | 2000-11-13 | 2002-05-08 | 山东大学 | Large high-purity chlorine dioxide generator and its production process |
| CN101081694A (en) * | 2007-05-31 | 2007-12-05 | 穆超碧 | Raw liquid for preparing chlorine dioxide, method and device for preparing chlorine dioxide |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103572633A (en) * | 2013-11-13 | 2014-02-12 | 广西大学 | Chlorine dioxide bleaching method |
| CN103572633B (en) * | 2013-11-13 | 2015-07-15 | 广西大学 | Chlorine dioxide bleaching method |
| CN104384521A (en) * | 2014-08-28 | 2015-03-04 | 江苏艾科勒科技有限公司 | Quick controllable nano-iron active material preparation device |
| CN106145044A (en) * | 2015-04-16 | 2016-11-23 | 湖南源生环保设备有限公司 | A kind of chlorine dioxide generator |
| CN106115624A (en) * | 2016-08-12 | 2016-11-16 | 深圳中科欧泰华环保科技有限公司 | Low acid amount prepares the method and device of chlorine dioxide |
| CN107902627A (en) * | 2017-11-29 | 2018-04-13 | 济南科琳宝环境科技有限公司 | A kind of high purity chlorine dioxide generator |
| CN108892105A (en) * | 2018-08-30 | 2018-11-27 | 南京理工大学 | A kind of chlorine dioxide generator and its operation method with gas-liquid separation Yu residual liquid recycling function |
| CN108892105B (en) * | 2018-08-30 | 2023-09-26 | 南京理工大学 | Chlorine dioxide generator with gas-liquid separation and residual liquid recycling functions and operation method thereof |
| CN115010093A (en) * | 2022-07-18 | 2022-09-06 | 宁夏艾克坚机械设备有限公司 | Gaseous chlorine dioxide continuous production system and production method |
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Application publication date: 20120620 |
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