CN107382791A - The apparatus and method that chlorine oxidation process produces ADC - Google Patents
The apparatus and method that chlorine oxidation process produces ADC Download PDFInfo
- Publication number
- CN107382791A CN107382791A CN201710497216.7A CN201710497216A CN107382791A CN 107382791 A CN107382791 A CN 107382791A CN 201710497216 A CN201710497216 A CN 201710497216A CN 107382791 A CN107382791 A CN 107382791A
- Authority
- CN
- China
- Prior art keywords
- chlorine
- venturi tube
- ejector
- reaction kettle
- reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000460 chlorine Substances 0.000 title claims abstract description 52
- 229910052801 chlorine Inorganic materials 0.000 title claims abstract description 52
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000003647 oxidation Effects 0.000 title claims abstract description 20
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title abstract description 5
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003595 mist Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 238000005406 washing Methods 0.000 claims description 7
- 239000012295 chemical reaction liquid Substances 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 20
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000001035 drying Methods 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- ULUZGMIUTMRARO-UHFFFAOYSA-N (carbamoylamino)urea Chemical compound NC(=O)NNC(N)=O ULUZGMIUTMRARO-UHFFFAOYSA-N 0.000 description 1
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C281/00—Derivatives of carbonic acid containing functional groups covered by groups C07C269/00 - C07C279/00 in which at least one nitrogen atom of these functional groups is further bound to another nitrogen atom not being part of a nitro or nitroso group
- C07C281/20—Derivatives of carbonic acid containing functional groups covered by groups C07C269/00 - C07C279/00 in which at least one nitrogen atom of these functional groups is further bound to another nitrogen atom not being part of a nitro or nitroso group the two nitrogen atoms of the functional groups being doubly-bound to each other, e.g. azoformamide
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of chlorine oxidation process production ADC apparatus and method.Said apparatus includes the water scrubber that is sequentially connected with, cooler, water mist separator and enters chlorine reactor；Entering chlorine reactor includes：Reactor, circulation line, circulating pump, and injector or Venturi tube；Wherein, injector or the inlet of Venturi tube are connected with one end of circulation line；The other end of circulation line is connected with the discharge gate of reactor；Injector or the liquid outlet of Venturi tube are connected with the charging aperture of reactor；Injector or the suction inlet of Venturi tube connect with the chlorine blast pipe of water mist separator；Circulating pump is arranged on circulation line.Chlorine oxidation process production ADC provided by the invention apparatus and method have the following advantages that：Without sulfuric acid tower, substantial amounts of Waste Sulfuric Acid is not produced；Without chlorine gas compressor so reducing investment cost, the risk for avoiding high pressure chlorine from leaking；High pressure chlorine pipeline is not needed to reduce a large amount of leakage accidents；High financial profit, safety and environmental protection.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to a device and a method for producing ADC (analog to digital converter) by a chlorine oxidation method.
Background
When ADC is produced by a chlorine oxidation method, the existing flow is generally as follows: chlorine cooling → drying tower (with sulfuric acid) → bubble cap drying tower → acid mist trap → chlorine compressor, and thereafter use by high pressure chlorine directly or by chlorine gas liquefaction and regasification. The defects of the existing mode are as follows: a large amount of waste sulfuric acid is generated; the equipment investment is high; the high-pressure chlorine pipeline has the hidden trouble of leakage accidents.
Disclosure of Invention
In order to solve the technical problems, the invention provides a device and a method for producing ADC by a chlorine oxidation method.
The invention provides a device for producing ADC by a chlorine oxidation method, which comprises the following steps: a water washing tower, a cooler, a water mist separator and a chlorine inlet reactor which are connected in sequence; the chlorine feeding reactor comprises: a reaction kettle, a circulating pipeline, a circulating pump and an ejector or a Venturi tube; wherein,
the liquid inlet of the ejector or the Venturi tube is connected with one end of the circulating pipeline; the other end of the circulating pipeline is connected with a discharge port of the reaction kettle; the liquid outlet of the ejector or the Venturi tube is connected with the feed inlet of the reaction kettle; the suction inlet of the ejector or the Venturi tube is communicated with the chlorine exhaust pipe of the water mist separator; the circulating pump is arranged on the circulating pipeline.
Further, a static mixer is installed at the rear end of the ejector.
The invention also provides a method for producing ADC by using a chlorine oxidation method, which comprises the following steps:
connecting two ends of the circulating pipeline with a liquid inlet of an ejector or a Venturi tube and a discharge port of the reaction kettle respectively; connecting a feed inlet of the reaction kettle with a liquid outlet of an ejector or a Venturi tube; a circulating pump is arranged on the circulating pipeline; connecting a water washing tower, a cooler and a water mist separator in sequence, and connecting a chlorine gas exhaust pipe of the water mist separator with a suction inlet of an ejector or a Venturi tube;
starting a circulating pump, and recycling the reaction liquid in the reaction kettle through a circulating pipeline; and when the reaction solution passes through the ejector or the Venturi tube, the negative pressure generated by the suction inlet automatically sucks the chlorine in the chlorine exhaust tube into the reaction kettle for reaction.
Compared with the prior art, the device and the method for producing ADC by using the chlorine oxidation method have the following advantages:
1. a sulfuric acid drying tower is not used, and a large amount of waste sulfuric acid is not generated;
2. the investment cost is reduced and the risk of high-pressure chlorine leakage is avoided because a chlorine compressor is not used;
3. a high-pressure chlorine pipeline is not needed to reduce a large number of leakage accidents;
4. the chlorine gas line can automatically prevent chlorine gas leakage under the condition that the chlorine gas line has a problem and can leak if the chlorine gas line has a slight decompression state, thereby having great economic benefit and reducing the safety and environmental protection risks.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for producing ADC by a chlorine oxidation method according to an embodiment of the present invention.
[ description of reference numerals ]
1-water washing tower 2-cooler
3-water mist separator 4-reaction kettle
5-circulation pipeline 6-circulation pump
7-ejector or Venturi 8-chlorine exhaust pipe
Detailed Description
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In a specific embodiment, the invention provides an apparatus for producing ADC by chlorine oxidation. Referring to fig. 1, the structure of an apparatus for producing ADC by chlorine oxidation according to an embodiment of the present invention is shown. The device includes: a water washing tower 1, a cooler 2, a water mist separator 3 and a chlorine inlet reactor which are connected in sequence; the chlorine feeding reactor comprises: a reaction kettle 4, a circulating pipeline 5, a circulating pump 6 and an ejector or venturi tube 7; wherein,
the liquid inlet of the ejector or the venturi tube 7 is connected with one end of the circulating pipeline 5; the other end of the circulating pipeline 5 is connected with a discharge port of the reaction kettle 4; the liquid outlet of the ejector or the venturi tube 7 is connected with the feed inlet of the reaction kettle 4; the suction inlet of the ejector or the Venturi tube 7 is communicated with the chlorine gas exhaust pipe 8 of the water mist separator 3; a circulation pump 6 is provided on the circulation line 5.
In the device provided by the invention, after the chlorine gas is cooled, the reaction kettle 4 automatically sucks the chlorine gas. The chlorine gas is sucked in by the reaction liquid in the reaction kettle 4 through the decompression generated when the ejector or the venturi tube 7 continues to circulate, and only the circulating pump 6 and the ejector or the venturi tube 7 are needed.
Further, a static mixer is installed at the rear end of the ejector. Therefore, the chlorine and the reaction liquid are more uniformly distributed, and the oxidation speed is increased.
Correspondingly, the invention also provides a method for producing ADC by a chlorine oxidation method, which comprises the following steps:
two ends of the circulating pipeline 5 are respectively connected with a liquid inlet of an ejector or a venturi tube 7 and a discharge port of the reaction kettle 4; a feed port of the reaction kettle 4 is connected with a liquid outlet of an ejector or a venturi tube 7; a circulating pump 6 is arranged on the circulating pipeline 5; connecting the water washing tower 1, the cooler 2 and the water mist separator 3 in sequence, and connecting a chlorine gas exhaust pipe 8 of the water mist separator 3 with a suction inlet of an ejector or a Venturi tube 7;
starting a circulating pump 6, and recycling the reaction liquid in the reaction kettle 4 through a circulating pipeline 5; after the reaction solution passes through the ejector or the venturi tube 7, the negative pressure generated at the suction inlet automatically sucks the chlorine gas in the chlorine gas exhaust pipe 8 into the reaction kettle 4 for reaction.
Currently, most ADC foaming agents produced in china begin with the electrolysis of salt. After electrolysis of the salt, chlorine and caustic soda are obtained. At this point, chlorine gas is produced which is at a very low pressure, about 80 degrees c, and contains considerable moisture. Currently, manufacturers of ADC foaming agents use ADC by cooling the chlorine gas, dehydrating it with sulfuric acid, compressing it to 0.2Mpa to 0.6Mpa, and injecting it into a reaction vessel based on the pressure. The ADC foaming agent is obtained by dispersing biurea into water in a reaction vessel and then oxidizing the dispersion with chlorine gas. The equipment for drying and compressing the chlorine consumes about 3000 million RMB based on 8 ten thousand 8 kilotons per year of chlorine, and needs about 1000KW/h of electric power.
The invention is characterized in that the low-pressure chlorine generated by electrolysis is directly used without the process. And there is no device of practical design. Instead, the existing equipment is utilized to change the method used by the existing 100% ADC manufacturers into a more economical method. Specifically, the drying and compressing process of chlorine gas is omitted, an Ejector (Ejector) or a venturi tube is installed in the reaction kettle, and the reaction liquid is circulated to the Ejector or the venturi tube by a circulating pump. At this time, the chlorine gas is sucked by the reduced pressure generated in the ejector.
Therefore, large-scale investment is not needed; high-pressure chlorine calandria is not needed; waste sulfuric acid which absorbs moisture is not generated; even if chlorine gas leaks due to some reason, large-scale leakage does not occur, and leakage can be prevented because the pressure is reduced; the chlorine gas is 8 ten thousand 8 kilotons per year, the electric power is only about 500KW/h, and the charge is only about 100 ten thousand RMB.
Compared with the prior art, the device and the method for producing ADC by using the chlorine oxidation method have the following advantages:
1, a sulfuric acid drying tower is not used, and a large amount of waste sulfuric acid is not generated;
2, a chlorine compressor is not used, so that the investment cost is reduced, and the risk of high-pressure chlorine leakage is avoided;
3, a high-pressure chlorine gas pipeline is not needed to reduce a large number of leakage accidents;
4, the chlorine gas pipeline can keep a micro-decompression state, and the leakage of chlorine gas can be automatically prevented under the condition that the chlorine gas pipeline has a problem and can leak, so that the huge economic benefit is realized, and the safety and environmental protection risks are reduced.
The device and the method for producing ADC by the chlorine oxidation method provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (3)
1. An apparatus for producing ADC by chlorine oxidation method, comprising: a water washing tower, a cooler, a water mist separator and a chlorine inlet reactor which are connected in sequence; the chlorine feeding reactor comprises: a reaction kettle, a circulating pipeline, a circulating pump and an ejector or a Venturi tube; wherein,
the liquid inlet of the ejector or the Venturi tube is connected with one end of the circulating pipeline; the other end of the circulating pipeline is connected with a discharge port of the reaction kettle; the liquid outlet of the ejector or the Venturi tube is connected with the feed inlet of the reaction kettle; the suction inlet of the ejector or the Venturi tube is communicated with the chlorine exhaust pipe of the water mist separator; the circulating pump is arranged on the circulating pipeline.
2. The apparatus for producing ADC using chlorine oxidation according to claim 1, wherein a static mixer is installed at the rear end of the ejector.
3. A method for producing ADC by a chlorine oxidation method is characterized by comprising the following steps:
connecting two ends of the circulating pipeline with a liquid inlet of an ejector or a Venturi tube and a discharge port of the reaction kettle respectively; connecting a feed inlet of the reaction kettle with a liquid outlet of an ejector or a Venturi tube; a circulating pump is arranged on the circulating pipeline; connecting a water washing tower, a cooler and a water mist separator in sequence, and connecting a chlorine gas exhaust pipe of the water mist separator with a suction inlet of an ejector or a Venturi tube;
starting a circulating pump, and recycling the reaction liquid in the reaction kettle through a circulating pipeline; and when the reaction solution passes through the ejector or the Venturi tube, the negative pressure generated by the suction inlet automatically sucks the chlorine in the chlorine exhaust tube into the reaction kettle for reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497216.7A CN107382791B (en) | 2017-06-26 | 2017-06-26 | Device and method for producing ADC (azodicarbonamide) by chlorine oxidation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497216.7A CN107382791B (en) | 2017-06-26 | 2017-06-26 | Device and method for producing ADC (azodicarbonamide) by chlorine oxidation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107382791A true CN107382791A (en) | 2017-11-24 |
| CN107382791B CN107382791B (en) | 2020-04-14 |
Family
ID=60332722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710497216.7A Active CN107382791B (en) | 2017-06-26 | 2017-06-26 | Device and method for producing ADC (azodicarbonamide) by chlorine oxidation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107382791B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608872A (en) * | 2009-07-03 | 2009-12-23 | 中国天辰工程有限公司 | Device for washing and cooling chlorine |
| CN201463628U (en) * | 2009-07-03 | 2010-05-12 | 中国天辰工程有限公司 | Chlorine washing and cooling system |
| CN103521145A (en) * | 2013-10-25 | 2014-01-22 | 锦州利诺化工科技开发有限公司 | Gas-liquid reaction device under pressure |
| CN103657576A (en) * | 2013-11-27 | 2014-03-26 | 杭州海虹精细化工有限公司 | Apparatus for chlorine to oxidize ADC foaming agent tail gas |
-
2017
- 2017-06-26 CN CN201710497216.7A patent/CN107382791B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608872A (en) * | 2009-07-03 | 2009-12-23 | 中国天辰工程有限公司 | Device for washing and cooling chlorine |
| CN201463628U (en) * | 2009-07-03 | 2010-05-12 | 中国天辰工程有限公司 | Chlorine washing and cooling system |
| CN103521145A (en) * | 2013-10-25 | 2014-01-22 | 锦州利诺化工科技开发有限公司 | Gas-liquid reaction device under pressure |
| CN103657576A (en) * | 2013-11-27 | 2014-03-26 | 杭州海虹精细化工有限公司 | Apparatus for chlorine to oxidize ADC foaming agent tail gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107382791B (en) | 2020-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102504902B (en) | Device for separation production of biomass natural gas from marsh gas with high hydrogen sulfide content | |
| CN204034592U (en) | Diluting concentrated sulfuric acid device | |
| CN103663389A (en) | Method and equipment for concentrating waste sulfuric acid in alkylate production conducted through sulfuric acid method | |
| CN107382791B (en) | Device and method for producing ADC (azodicarbonamide) by chlorine oxidation method | |
| CN205586791U (en) | Acidity recovery system that drops a hint in sulfuric acid process alkanisation technology | |
| CN103691285B (en) | A kind of ammonia preparation device being exclusively used in washing sulfuric acid tail gas | |
| CN215939509U (en) | Hydrochloric acid forced circulation absorption device | |
| CN204550061U (en) | Kettle device is washed in a kind of phosphorus trichloride production technique | |
| CN212357397U (en) | Device for recovering chlorine gas by acid etching copper recovery system | |
| CN210215568U (en) | Recovery system of chlorine gas generated in copper electrolysis extraction process | |
| CN113842753A (en) | Treatment process of tail gas discharged from cathode of nitrogen trifluoride electrolytic cell | |
| CN101428191A (en) | Method for improving washing efficiency for tail gas from wet-process phosphoric acid manufacture | |
| CN113893663A (en) | Nitrogen trifluoride production pollution discharge equipment and technological method | |
| CN210729096U (en) | Pickling waste gas recovery processing device | |
| CN104587810B (en) | A kind of method of comprehensive utilization of the chlorination tail gas of itrated compound | |
| CN219502390U (en) | Concentrated nitric acid tail gas recovery device | |
| CN203017976U (en) | Concentrated nitric acid mist recycling device | |
| CN207034644U (en) | A kind of new low-temp methanol washes poor methanol induction system | |
| CN113058388A (en) | Bubble tower device for treating methanol waste gas and using method | |
| CN212222420U (en) | Circulation efficient sulfurous acid preparation facilities | |
| CN206082119U (en) | Enrichment, processing system of spinning hydrogen sulfide waste gas | |
| CN210251786U (en) | Device for recovering chlorine in methanesulfonyl chloride tail gas | |
| CN204502443U (en) | For the liquid-ring vacuum pump system of Benzene Chloride rectification under vacuum | |
| CN104689587A (en) | Liquid ring type vacuum pump system for chlorinated benzene vacuum rectification | |
| CN216498447U (en) | Acid-making purification water-saving system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |