CN110841428A - Nitrous oxide's clean system - Google Patents
Nitrous oxide's clean system Download PDFInfo
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- CN110841428A CN110841428A CN201911030800.7A CN201911030800A CN110841428A CN 110841428 A CN110841428 A CN 110841428A CN 201911030800 A CN201911030800 A CN 201911030800A CN 110841428 A CN110841428 A CN 110841428A
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- water
- alkaline
- nitrous oxide
- tower
- washing tower
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- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000001272 nitrous oxide Substances 0.000 title claims abstract description 54
- 238000005406 washing Methods 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 238000000746 purification Methods 0.000 claims abstract description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000003518 caustics Substances 0.000 claims description 5
- 239000012286 potassium permanganate Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 6
- 239000012670 alkaline solution Substances 0.000 description 5
- 239000010865 sewage Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1406—Multiple stage absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/402—Dinitrogen oxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a nitrous oxide purification system, and belongs to the technical field of chemical industry. It has solved prior art and has had the poor problem of stability. The purifying system for the nitrous oxide comprises two water washing towers and two alkaline washing towers, wherein the alkaline washing towers are arranged in a plurality of numbers, and the water washing towers and the alkaline washing towers are connected in series between the two water washing towers. This nitrous oxide's clean system stability is high.
Description
Technical Field
The invention belongs to the technical field of chemical industry, and relates to a nitrous oxide purification system.
Background
Nitrous oxide of the formula N2And O. A colorless, sweet-tasting gas, an oxidant, which is capable of supporting combustion under certain conditions (with oxygen, since nitrous oxide decomposes at high temperatures into nitrogen and oxygen), but at room temperatureStable, has mild anesthetic action, and can cause laughing.
The existing nitrous oxide preparation method is generally to directly decompose ammonium nitrate, and the nitrous oxide obtained in the way contains impurities, so that the quality of the nitrous oxide is not high.
In order to improve the quality of nitrous oxide, the existing purification system usually adopts a single water washing mode to remove impurities which can be dissolved in water in the nitrous oxide. Although the method achieves the purification effect, the method mainly removes impurities which can be dissolved in water, and is not suitable for other impurities, so that the purification effect is poor.
Disclosure of Invention
The present invention has been made in view of the above problems occurring in the prior art, and an object of the present invention is to provide a nitrous oxide purification system capable of effectively removing impurities contained in nitrous oxide.
The purpose of the invention can be realized by the following technical scheme:
the purification system for nitrous oxide is characterized by comprising two water washing towers and a plurality of alkaline washing towers, wherein the alkaline washing towers are arranged between the two water washing towers and are connected in series.
Clear water is arranged in the water washing tower, and alkaline treatment solution is arranged in the alkaline washing tower.
After the nitrous oxide enters the first water washing tower, water-soluble impurities in the nitrous oxide can be effectively removed. The treated nitrous oxide sequentially passes through a plurality of alkaline washing towers, other impurities in the nitrous oxide are effectively removed through the alkaline washing towers, and finally the nitrous oxide is treated through a second water washing tower to obtain pure nitrous oxide.
It can be seen that the impurities in the nitrous oxide can be effectively removed under the action of two water washing towers and a plurality of alkaline washing towers.
In the purification system for nitrous oxide described above, the water in the water scrubber is replaced every 24 hours.
In the purification system for nitrous oxide described above, the solution in the caustic tower was replaced at intervals of 12 hours.
In the purification system of nitrous oxide, the solution in the alkaline tower is formed by mixing sodium hydroxide, potassium permanganate and water, and the mass ratio of the sodium hydroxide, the potassium permanganate and the water is 7:2: 91.
The prepared alkaline solution can effectively remove impurities such as carbon monoxide, carbon dioxide, nitric oxide, nitrogen dioxide and the like in nitrous oxide.
In the nitrous oxide purification system, the bottom of the alkaline washing tower is provided with a sewage discharge valve, the top of the alkaline washing tower is provided with an inlet communicated with an inner cavity of the alkaline washing tower, when the liquid level in the alkaline washing tower is lower than 250-320 cm, water is added from the inlet to maintain the water level in the alkaline washing tower, and the opening time of the sewage discharge valve is 10-15 minutes.
The structure can prevent the alkaline solution in the alkaline tower from being emptied.
The liquid level in the alkaline tower is effectively maintained during the process of discharging part of alkaline solution according to the parameter conditions. And the nitrous oxide remained in the alkaline tower can be effectively treated.
In the purification system of nitrous oxide described above, the number of the alkaline towers is three.
In the nitrous oxide purification system, the bottom of the washing tower is provided with a drain valve, the top of the washing tower is provided with an inlet communicated with an inner cavity of the washing tower, the drain valve is opened to drain water in the washing tower, then the drain valve is closed, and then new clean water is injected from the inlet.
In the purification system of nitrous oxide, the lower part of the water scrubber is provided with a first inlet communicated with the inner cavity of the water scrubber, the upper part of the water scrubber is provided with a first outlet communicated with the inner cavity, the lower part of the alkaline scrubber is provided with a second inlet communicated with the inner cavity of the alkaline scrubber, the upper part of the alkaline scrubber is provided with a second outlet communicated with the inner cavity, and the water scrubber, the alkaline scrubber and two adjacent alkaline scrubbers are communicated through connecting pipes.
Compared with the prior art, the purification system of nitrous oxide can effectively improve the purity of nitrous oxide through two times of water washing and multiple times of alkali washing, and has higher stability.
Meanwhile, when the alkaline solution in the alkaline tower is replaced, the proper alkaline solution can be ensured to be always in the alkaline tower, so that nitrous oxide remained in the alkaline tower can be ensured to be stably treated, the stability of the nitrous oxide is further improved, and the nitrous oxide stabilizing agent has high practical value.
Drawings
Fig. 1 is a schematic view of a purification system for nitrous oxide.
In the figure, 1, a water washing tower; 2. an alkaline washing tower; 3. and (4) connecting the pipes.
Detailed Description
As shown in fig. 1, the purification system for nitrous oxide comprises two water washing towers 1 and a plurality of alkaline washing towers 2, wherein the number of the water washing towers 1 is two, the number of the alkaline washing towers 2 is several, the alkaline washing towers 2 are positioned between the two water washing towers 1, and the water washing towers 1 and the alkaline washing towers 2 are connected in series.
The water in the water washing tower 1 is replaced every 24 hours.
The solution in the caustic tower 2 was replaced at 12 hour intervals.
The solution in the alkaline tower 2 is formed by mixing sodium hydroxide, potassium permanganate and water, and the mass ratio of the sodium hydroxide to the potassium permanganate to the water is 7:2: 91.
The bottom of the alkaline tower 2 is provided with a sewage discharge valve, the top of the alkaline tower is provided with an inlet communicated with an inner cavity of the alkaline tower, when the liquid level in the alkaline tower is lower than 250-320 cm, water is added from the inlet to maintain the water level in the alkaline tower, and the opening time of the sewage discharge valve is 10-15 minutes.
The number of the alkaline towers 2 is three.
The bottom of the washing tower 1 is provided with a drain valve, the top of the washing tower is provided with an inlet communicated with an inner cavity of the washing tower, the drain valve is opened to drain water in the washing tower, then the drain valve is closed, and new clean water is injected from the inlet.
The lower part of the water washing tower 1 is provided with a first inlet communicated with an inner cavity of the water washing tower, the upper part of the water washing tower is provided with a first outlet communicated with the inner cavity, the lower part of the alkaline washing tower is provided with a second inlet communicated with the inner cavity of the alkaline washing tower, the upper part of the alkaline washing tower is provided with a second outlet communicated with the inner cavity, and the water washing tower, the alkaline washing tower and two adjacent alkaline washing towers are communicated through connecting pipes.
Clear water is arranged in the water washing tower, and alkaline treatment solution is arranged in the alkaline washing tower.
After the nitrous oxide enters the first water washing tower, water-soluble impurities in the nitrous oxide can be effectively removed. The treated nitrous oxide sequentially passes through a plurality of alkaline washing towers, other impurities in the nitrous oxide are effectively removed through the alkaline washing towers, and finally the nitrous oxide is treated through a second water washing tower to obtain pure nitrous oxide.
It can be seen that the impurities in the nitrous oxide can be effectively removed under the action of two water washing towers and a plurality of alkaline washing towers.
Claims (8)
1. The purification system for nitrous oxide is characterized by comprising two water washing towers and a plurality of alkaline washing towers, wherein the alkaline washing towers are arranged between the two water washing towers and are connected in series.
2. The system for purifying nitrous oxide as defined in claim 1, wherein water in said water scrubber is replaced every 24 hours.
3. The nitrous oxide purification system according to claim 2, wherein the solution in said caustic tower is replaced at intervals of 12 hours.
4. The purification system of nitrous oxide as claimed in claim 3, wherein the solution in the caustic tower is mixed by sodium hydroxide, potassium permanganate and water in a mass ratio of 7:2: 91.
5. The nitrous oxide purification system according to claim 4, wherein the bottom of the alkaline washing tower is provided with a blowdown valve, the top of the alkaline washing tower is provided with an inlet communicated with an inner cavity of the alkaline washing tower, when the liquid level in the alkaline washing tower is reduced to 250-320 cm, water is added from the inlet to maintain the water level in the alkaline washing tower, and the opening time of the blowdown valve is 10-15 minutes.
6. The nitrous oxide purification system according to claim 5, wherein the number of the caustic towers is three.
7. The nitrous oxide purification system according to claim 6, wherein the bottom of the washing tower is provided with a drain valve, the top of the washing tower is provided with an inlet communicated with an inner cavity of the washing tower, the drain valve is opened to drain water in the washing tower, then the drain valve is closed, and then new clean water is injected from the inlet.
8. The nitrous oxide purification system according to claim 7, wherein a first inlet communicated with an inner cavity of the water scrubber is arranged at a lower part of the water scrubber, a first outlet communicated with the inner cavity is arranged at an upper part of the water scrubber, a second inlet communicated with the inner cavity is arranged at a lower part of the alkaline scrubber, a second outlet communicated with the inner cavity is arranged at an upper part of the alkaline scrubber, and the water scrubber is communicated with the alkaline scrubber and two adjacent alkaline scrubbers through connecting pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911030800.7A CN110841428A (en) | 2019-10-28 | 2019-10-28 | Nitrous oxide's clean system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911030800.7A CN110841428A (en) | 2019-10-28 | 2019-10-28 | Nitrous oxide's clean system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110841428A true CN110841428A (en) | 2020-02-28 |
Family
ID=69598235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911030800.7A Pending CN110841428A (en) | 2019-10-28 | 2019-10-28 | Nitrous oxide's clean system |
Country Status (1)
| Country | Link |
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| CN (1) | CN110841428A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117225304A (en) * | 2023-11-13 | 2023-12-15 | 河南心连心深冷能源股份有限公司 | Device and method for preparing high-purity nitric oxide |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955167A (en) * | 2010-06-07 | 2011-01-26 | 天津市泰源工业气体有限公司 | Technique for preparing nitrous oxide by decomposing ammonium nitrate |
| CN103357262A (en) * | 2013-07-22 | 2013-10-23 | 王新鹏 | System for recovering and purifying nitrous oxide in industrial tail gas |
| JP2016147766A (en) * | 2015-02-10 | 2016-08-18 | 昭和電工株式会社 | Method for purifying nitrous oxide |
| CN209383393U (en) * | 2018-11-20 | 2019-09-13 | 天津市汇筑恒升科技有限公司 | The device of electronic-grade dental gas in recycling and purifying industrial tail gas |
| CN110285645A (en) * | 2019-07-29 | 2019-09-27 | 欧中电子材料（重庆）有限公司 | N2Purifying plant, production system and the method for purification of O |
-
2019
- 2019-10-28 CN CN201911030800.7A patent/CN110841428A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955167A (en) * | 2010-06-07 | 2011-01-26 | 天津市泰源工业气体有限公司 | Technique for preparing nitrous oxide by decomposing ammonium nitrate |
| CN103357262A (en) * | 2013-07-22 | 2013-10-23 | 王新鹏 | System for recovering and purifying nitrous oxide in industrial tail gas |
| JP2016147766A (en) * | 2015-02-10 | 2016-08-18 | 昭和電工株式会社 | Method for purifying nitrous oxide |
| CN209383393U (en) * | 2018-11-20 | 2019-09-13 | 天津市汇筑恒升科技有限公司 | The device of electronic-grade dental gas in recycling and purifying industrial tail gas |
| CN110285645A (en) * | 2019-07-29 | 2019-09-27 | 欧中电子材料（重庆）有限公司 | N2Purifying plant, production system and the method for purification of O |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117225304A (en) * | 2023-11-13 | 2023-12-15 | 河南心连心深冷能源股份有限公司 | Device and method for preparing high-purity nitric oxide |
| CN117225304B (en) * | 2023-11-13 | 2024-02-09 | 河南心连心深冷能源股份有限公司 | Device and method for preparing high-purity nitric oxide |
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Application publication date: 20200228 |