CN203990232U - A kind of Ammoximation reaction emptying end gas that utilizes extracts nitric oxide production device - Google Patents
A kind of Ammoximation reaction emptying end gas that utilizes extracts nitric oxide production device Download PDFInfo
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- CN203990232U CN203990232U CN201420401776.XU CN201420401776U CN203990232U CN 203990232 U CN203990232 U CN 203990232U CN 201420401776 U CN201420401776 U CN 201420401776U CN 203990232 U CN203990232 U CN 203990232U
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- tail gas
- conveying pipeline
- precooler
- separator
- nitrous oxide
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Abstract
The utility model provides a kind of Ammoximation reaction emptying end gas that utilizes to extract nitric oxide production device, tail gas absorber top conveying pipeline is connected with steam-water separator bottom, steam-water separator is after conveying pipeline is connected with compressor, be connected with precooler top again, precooler bottom is connected with cooler bottom through conveying pipeline, cooler top is connected with separator through conveying pipeline, and separator top is connected with precooler bottom through conveying pipeline.The device that the utility model provides can effectively reclaim the accessory substance nitrous oxide generating in cyclohexanone oxamidinating course of reaction, avoids it directly to enter in air, causes environmental pollution; The nitrous oxide simultaneously reclaiming can be used as production marketing, has certain economic benefit.
Description
Technical field
The utility model relates to the device that utilizes Ammoximation reaction emptying end gas to extract nitrous oxide.
Background technology
The colourless pleasantly sweet gas of nitrous oxide (Nitrous Oxide), claims again laughing gas, is a kind of oxidant, chemical formula N
2o, can support burning (same oxygen, because laughing gas at high temperature can resolve into nitrogen and oxygen) under certain condition, but at room temperature stable, there is slight anesthetic effect, and can cause people and laugh, be mainly used in the fields such as food processing, electronics industry, medical science.
Nitrous oxide is a kind of gas with greenhouse effects, compares with carbon dioxide, although the content of nitrous oxide in atmosphere is very low, it is 310 times of carbon dioxide that its unimolecule heats potentiality; To the warming effect of global climate in future by more and more significant, the increase of nitrous oxide concentration, has caused scientist's very big concern.At present, the research to this problem, deeply carries out.
Cyclohexanone oxamidinating reaction is divided into two steps, and the first step is that ammonia is become azanol by hydrogen peroxide oxidation under catalyst action, and second step is that azanol and cyclohexanone carry out non-catalytic reaction, generates cyclohexanone oxime.Cyclohexanone and cyclohexanone oxime are all not soluble in water, and reaction needed be take the tert-butyl alcohol and under full liquid-phase condition, carried out as solvent.Reaction equation is as follows:
Except above-mentioned main reaction, be also attended by hydrogen peroxide and ammonia react and produce nitrous oxide, nitrogen, decomposing hydrogen dioxide solution is produced the side reactions such as oxygen and is occurred:
4H
2O
2+2NH
3→N
2O+7H
2O
3H
2O
2+2NH
3→N
2+6H
2O
2H
2O
2→2H
2O+O
2
In cyclohexanone oxamidinating reaction end gas, contain nitrogen, nitrous oxide, oxygen, the tert-butyl alcohol, ammonia, water vapour, in traditional handicraft, tail gas is absorbed the tert-butyl alcohol wherein, ammonia to get off to recycle by tail gas absorber, residue nitrogen, nitrous oxide, oxygen are directly discharged in air, have caused environmental pollution and the wasting of resources.
Summary of the invention
The utility model is for above-mentioned deficiency, the device that utilizes Ammoximation reaction emptying end gas to extract nitrous oxide is provided, the method is applicable to take the cyclohexanone oxime production technology that ammonia, cyclohexanone, hydrogen peroxide are raw material, can reclaim the greenhouse gases nitrous oxide larger to environmental disruption.
The utility model is achieved in that
Utilize Ammoximation reaction emptying end gas to extract nitric oxide production device, tail gas absorber top conveying pipeline is connected with steam-water separator bottom, steam-water separator is after conveying pipeline is connected with compressor, be connected with precooler top again, precooler bottom is connected with cooler bottom through conveying pipeline, cooler top is connected with separator through conveying pipeline, and separator top is connected with precooler bottom through conveying pipeline.Tail gas absorber top is provided with desalted water shower, and tail gas absorber bottom is provided with tail gas absorption liquid conveying pipeline.Precooler top is provided with tail gas blow-down pipe.
Utilize Ammoximation reaction emptying end gas to extract the method for nitrous oxide, reaction end gas in cyclohexanone oxamidinating course of reaction is isolated after the water in tail gas by steam-water separator after tail gas absorber absorbing ammonia and the tert-butyl alcohol, by compressor, tail gas is compressed to pressure limit 1.0～7.0MPa (absolute pressure), tail gas after compression is containing nitrogen, nitrous oxide, oxygen, tail gas passes into the further cooling liquid of cooler after precooler is cooled to 34-50 ℃, and reduces temperature to N
2o liquefaction point-40～34 ℃, tail gas after liquefaction passes through separator for further separation again, the nitrous oxide liquid that is extraction of discharging from separator bottom, the not solidifying inertia cryogenic gas self-separation device top of containing oxygen and nitrogen after separator separation enters precooler and carries out heat exchange with the tail gas that is compressed to precooler, after heat exchange, be directly discharged in air the nitrous oxide liquid that is extraction of discharging from separator bottom.
The Ammoximation reaction emptying end gas that utilizes that the utility model provides extracts the device of nitrous oxide, its advantage is: can effectively reclaim the accessory substance nitrous oxide generating in cyclohexanone oxamidinating course of reaction, avoid it directly to enter in air, cause environmental pollution; The nitrous oxide simultaneously reclaiming can be used as production marketing, has certain economic benefit.
Accompanying drawing explanation
Fig. 1 is method and the apparatus structure schematic diagram that utilizes Ammoximation reaction emptying end gas extraction nitrous oxide, 1. tail gas absorber, 2. steam-water separator, 3. compressor, 4. precooler, 5. cooler, 6. separator.
Embodiment 1
A kind of Ammoximation reaction emptying end gas that utilizes extracts nitric oxide production device, tail gas absorber 1 top conveying pipeline is connected with steam-water separator 2 bottoms, steam-water separator 2 is after conveying pipeline is connected with compressor 3, be connected with precooler 4 tops again, precooler 4 bottoms are connected with cooler 5 bottoms through conveying pipeline, cooler 5 tops are connected with separator 6 through conveying pipeline, and separator 6 tops are connected with precooler 4 bottoms through conveying pipeline.Tail gas absorber 1 top is provided with desalted water shower, and tail gas absorber 1 bottom is provided with tail gas absorption liquid conveying pipeline, and precooler 4 tops are provided with tail gas blow-down pipe.
Embodiment 2
Utilize Ammoximation reaction emptying end gas to extract the method for nitrous oxide, the recovery process that adopts said apparatus to carry out nitrous oxide is:
Reaction end gas in cyclohexanone oxamidinating course of reaction sprays the demineralized water counter current contacting of getting off with tower top from bottom to top at the bottom of tail gas absorber 1 tower, and the ammonia in absorption reaction tail gas and the tail gas absorption liquid after the tert-butyl alcohol loop back reaction system, from tail gas absorber 1 top out containing nitrous oxide, oxygen, the mist of nitrogen is isolated after the water in tail gas by steam-water separator 2, by compressor 3, tail gas is compressed to 1.0MPa (absolute pressure), tail gas after compression is cooled to 35 ℃ through precooler 4, and then reduce temperature to-40 ℃ through subcooler 5, at-40 ℃, under the condition of 1.0MPa (absolute pressure), nitrous oxide is liquid, oxygen, nitrogen is still gaseous state, again the tail gas of this admixture is passed through to separator 6 separation, from the separator 6 tops solidifying inertia cryogenic gas that contains oxygen and nitrogen out and compression, tail gas is directly discharged in air after precooler 4 carries out heat exchange recovery section cold, and reduce compressed tail gas temperature to 35 ℃, the nitrous oxide liquid that is extraction of discharging from separator 6 bottoms.
Embodiment 3
Utilize Ammoximation reaction emptying end gas to extract the method for nitrous oxide, the recovery process that adopts said apparatus to carry out nitrous oxide is:
Reaction end gas in cyclohexanone oxamidinating course of reaction sprays the demineralized water counter current contacting of getting off with tower top from bottom to top at the bottom of tail gas absorber 1 tower, and the ammonia in absorption reaction tail gas and the tail gas absorption liquid after the tert-butyl alcohol loop back reaction system, from tail gas absorber 1 top out containing nitrous oxide, oxygen, the mist of nitrogen is isolated after the water in tail gas by steam-water separator 2, by compressor 3, tail gas is compressed to 4.0MPa (absolute pressure), tail gas after compression is cooled to 40 ℃ through precooler 4, and then reduce temperature to-10 ℃ through subcooler 5, at-10 ℃, under the condition of 4.0MPa (absolute pressure), nitrous oxide is liquid, oxygen, nitrogen is still gaseous state, again the tail gas of this admixture is passed through to separator 6 separation, from the separator 6 tops solidifying inertia cryogenic gas that contains oxygen and nitrogen out and compression, tail gas is directly discharged in air after precooler 4 carries out heat exchange recovery section cold, and reduce compressed tail gas temperature to 40 ℃, the nitrous oxide liquid that is extraction of discharging from separator 6 bottoms.
Embodiment 4
Utilize Ammoximation reaction emptying end gas to extract the method for nitrous oxide, the recovery process that adopts said apparatus to carry out nitrous oxide is:
Reaction end gas in cyclohexanone oxamidinating course of reaction sprays the demineralized water counter current contacting of getting off with tower top from bottom to top at the bottom of tail gas absorber 1 tower, and the ammonia in absorption reaction tail gas and the tail gas absorption liquid after the tert-butyl alcohol loop back reaction system, from tail gas absorber 1 top out containing nitrous oxide, oxygen, the mist of nitrogen is isolated after the water in tail gas by steam-water separator 2, by compressor 3, tail gas is compressed to 7.0MPa (absolute pressure), tail gas after compression is cooled to 50 ℃ through precooler 4, and then reduce temperature to 34 ℃ through subcooler 5, at 34 ℃, under the condition of 7.0MPa (absolute pressure), nitrous oxide is liquid, oxygen, nitrogen is still gaseous state, again the tail gas of this admixture is passed through to separator 6 separation, from the separator 6 tops solidifying inertia cryogenic gas that contains oxygen and nitrogen out and compression, tail gas is directly discharged in air after precooler 4 carries out heat exchange recovery section cold, and reduce compressed tail gas temperature to 50 ℃, the nitrous oxide liquid that is extraction of discharging from separator 6 bottoms.
Claims (3)
1. one kind is utilized Ammoximation reaction emptying end gas to extract nitric oxide production device, it is characterized in that: tail gas absorber (1) top conveying pipeline is connected with steam-water separator (2) bottom, steam-water separator (2) is after conveying pipeline is connected with compressor (3), be connected with precooler (4) top again, precooler (4) bottom is connected with cooler (5) bottom through conveying pipeline, cooler (5) top is connected with separator (6) through conveying pipeline, and separator (6) top is connected with precooler (4) bottom through conveying pipeline.
2. the Ammoximation reaction emptying end gas that utilizes according to claim 1 extracts nitric oxide production device, it is characterized in that: tail gas absorber (1) top is provided with desalted water shower, and tail gas absorber (1) bottom is provided with tail gas absorption liquid conveying pipeline.
3. the Ammoximation reaction emptying end gas that utilizes according to claim 1 extracts nitric oxide production device, it is characterized in that: precooler (4) top is provided with tail gas blow-down pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401776.XU CN203990232U (en) | 2014-07-18 | 2014-07-18 | A kind of Ammoximation reaction emptying end gas that utilizes extracts nitric oxide production device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401776.XU CN203990232U (en) | 2014-07-18 | 2014-07-18 | A kind of Ammoximation reaction emptying end gas that utilizes extracts nitric oxide production device |
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| Publication Number | Publication Date |
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| CN203990232U true CN203990232U (en) | 2014-12-10 |
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| CN201420401776.XU Expired - Fee Related CN203990232U (en) | 2014-07-18 | 2014-07-18 | A kind of Ammoximation reaction emptying end gas that utilizes extracts nitric oxide production device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108689A (en) * | 2014-07-18 | 2014-10-22 | 湖北三宁化工股份有限公司 | Method and device for extracting nitrogen monoxide by using emptying tail gas of ammoximation reaction |
-
2014
- 2014-07-18 CN CN201420401776.XU patent/CN203990232U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108689A (en) * | 2014-07-18 | 2014-10-22 | 湖北三宁化工股份有限公司 | Method and device for extracting nitrogen monoxide by using emptying tail gas of ammoximation reaction |
| CN104108689B (en) * | 2014-07-18 | 2015-12-02 | 湖北三宁化工股份有限公司 | One utilizes Ammoximation reaction emptying end gas to extract nitric oxide production method and device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20200718 |