CN106621704A - Composite decarbonization solvent - Google Patents
Composite decarbonization solvent Download PDFInfo
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- CN106621704A CN106621704A CN201510727700.5A CN201510727700A CN106621704A CN 106621704 A CN106621704 A CN 106621704A CN 201510727700 A CN201510727700 A CN 201510727700A CN 106621704 A CN106621704 A CN 106621704A
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- Prior art keywords
- compound
- carbon dioxide
- solution
- decarbonization solvent
- solvent
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- 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
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- Gas Separation By Absorption (AREA)
- Detergent Compositions (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to the field of gas separation engineering, in particular to a composite decarbonization solvent for removing carbon dioxide in process gas. The composite decarbonization solvent is prepared from 20wt% of N-methyldiethanolamine, 10wt%-30wt% of a monoethanolamine activating agent, a foam inhibiting agent and water. According to the composite decarbonization solvent, reaction rate is high, processing capacity of a device is improved, and gas purification degree is increased; the foam inhibiting agent eliminates foam produced by a solution in time, so that loss of the solvent is reduced, and stable operation of the device is guaranteed.
Description
Technical background
The present invention relates to gas separation engineering field, particularly relates to a kind of compound decarbonization solvent of the carbon dioxide in removing process gas.
Background technology
A large amount of discharges of GHG carbon dioxide are a key factors for causing global warming.N methyldiethanol amine is
The primary solvent of carbon dioxide in removing process gas is realized at present, has the disadvantage the reaction rate of N methyldiethanol amine and carbon dioxide
Slowly, the disposal ability of device is reduced, it is impossible to removed on a large scale.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, a kind of new compound decarbonization solvent is proposed, with reaction speed
Rate is fast, disposal ability is big, gas purification degree is high, solvent loss is little, ensure the advantage that device is steadily carried out.
The present invention employs the following technical solutions realization：
A kind of compound decarbonization solvent, including the N methyldiethanol amine and the monoethanolamine activator of 10～30wt% of 20wt%, its
Balance of water.
As preferred technical scheme, the employing 15wt% of the activator.
Used as preferred technical scheme, the compound decarbonization solvent is also including the foam inhibiting agent of 1～3wt%.
Used as preferred technical scheme, the foam inhibiting agent adopts dimethicone.
Used as preferred technical scheme, the concentration of the foam inhibiting agent adopts 1.5wt%.
Used as preferred technical scheme, the absorption temperature of the compound decarbonization solvent adopts 20～30 DEG C.
The invention has the beneficial effects as follows：(1) reaction rate is fast, improves the disposal ability of device, improves gas purification degree；
(2) foam inhibiting agent eliminates in time the foam of solution generation, reduces the loss of solvent, it is ensured that plant running is steady.
Specific embodiment
Embodiment 1
The compound decarbonization solvent of N methyldiethanol amines of the 20g containing 20wt% and the monoethanolamine of 10wt% its balance of water is taken,
The carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, after gas-liquid two-phase balance, two in solution
The solubility of carbonoxide.
The N methyldiethanol amine of 20wt% and the monoethanolamine compound decarbonization solvent decarburization experimental result of 10wt%
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 30 | 10 |
Embodiment 2
The compound decarbonization solvent of N methyldiethanol amines of the 20g containing 20wt% and the monoethanolamine of 30wt% its balance of water is taken,
The carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, after gas-liquid two-phase balance, two in solution
The solubility of carbonoxide.
The N methyldiethanol amine of 20wt% and the monoethanolamine compound decarbonization solvent decarburization experimental result of 30wt%
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 15 | 20 |
Embodiment 3
The compound decarbonization solvent of N methyldiethanol amines of the 20g containing 20wt% and the monoethanolamine of 15wt% its balance of water is taken,
The carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, after gas-liquid two-phase balance, two in solution
The solubility of carbonoxide.
The N methyldiethanol amine of 20wt% and the monoethanolamine compound decarbonization solvent decarburization experimental result of 15wt%
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 20 | 15 |
Embodiment 4
Take the monoethanolamine and the dimethicone of 1wt% its surplus of N methyldiethanol amines of the 20g containing 20wt% and 10wt%
For the compound decarbonization solvent of water, the carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, gas-liquid
After biphase equilibrium, the solubility of carbon dioxide in solution.
20wt%N- methyl diethanolamines and 10wt% monoethanolamines and 1wt% dimethicone compound decarbonization solvent experimental results
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 30 | 11 |
Embodiment 5
Take the monoethanolamine and the dimethicone of 3wt% its surplus of N methyldiethanol amines of the 20g containing 20wt% and 10wt%
For the compound decarbonization solvent of water, the carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, gas-liquid
After biphase equilibrium, the solubility of carbon dioxide in solution.
20wt%N- methyl diethanolamines and 10wt% monoethanolamines and 3wt% dimethicone compound decarbonization solvent experimental results
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 28 | 12 |
Embodiment 6
Take 20g containing 20wt% N methyldiethanol amine and 10wt% monoethanolamine and 1.5wt% dimethicone remaining
The compound decarbonization solvent for water is measured, the carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, gas
After liquid biphase equilibrium, the solubility of carbon dioxide in solution.
20wt%N- methyl diethanolamines and 10wt% monoethanolamines and 1.5wt% dimethicone compound decarbonization solvent experimental results
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 28 | 12 |
Embodiment 7
Take the monoethanolamine and the dimethicone of 1wt% its surplus of N methyldiethanol amines of the 20g containing 20wt% and 30wt%
For the compound decarbonization solvent of water, the carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, gas-liquid
After biphase equilibrium, the solubility of carbon dioxide in solution.
20wt%N- methyl diethanolamines and 30wt% monoethanolamines and 1wt% dimethicone compound decarbonization solvent experimental results
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 15 | 22 |
Embodiment 8
Take the monoethanolamine and the dimethicone of 3wt% its surplus of N methyldiethanol amines of the 20g containing 20wt% and 30wt%
For the compound decarbonization solvent of water, the carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, gas-liquid
After biphase equilibrium, the solubility of carbon dioxide in solution.
20wt%N- methyl diethanolamines and 30wt% monoethanolamines and 3wt% dimethicone compound decarbonization solvent experimental results
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 15 | 22 |
Embodiment 9
Take 20g containing 20wt% N methyldiethanol amine and 30wt% monoethanolamine and 1.5wt% dimethicone remaining
The compound decarbonization solvent for water is measured, the carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, gas
After liquid biphase equilibrium, the solubility of carbon dioxide in solution.
20wt%N- methyl diethanolamines and 30wt% monoethanolamines and 1.5wt% dimethicone compound decarbonization solvent experimental results
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 15 | 22 |
Embodiment 10
Take the monoethanolamine and the dimethicone of 1wt% its surplus of N methyldiethanol amines of the 20g containing 20wt% and 15wt%
For the compound decarbonization solvent of water, the carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, gas-liquid
After biphase equilibrium, the solubility of carbon dioxide in solution.
20wt%N- methyl diethanolamines and 15wt% monoethanolamines and 1wt% dimethicone compound decarbonization solvent experimental results
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 30 | 11 |
Embodiment 11
Take the monoethanolamine and the dimethicone of 3wt% its surplus of N methyldiethanol amines of the 20g containing 20wt% and 15wt%
For the compound decarbonization solvent of water, the carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, gas-liquid
After biphase equilibrium, the solubility of carbon dioxide in solution.
20wt%N- methyl diethanolamines and 15wt% monoethanolamines and 3wt% dimethicone compound decarbonization solvent experimental results
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 28 | 12 |
Embodiment 12
Take 20g containing 20wt% N methyldiethanol amine and 15wt% monoethanolamine and 1.5wt% dimethicone remaining
The compound decarbonization solvent for water is measured, the carbon dioxide that temperature is 30 DEG C, pressure is 0.5MPa is input into the solution, gas
After liquid biphase equilibrium, the solubility of carbon dioxide in solution.
20wt%N- methyl diethanolamines and 10wt% monoethanolamines and 1.5wt% dimethicone compound decarbonization solvent experimental results
| Temperature (DEG C) | Pressure (MPa) | The time required to balance (s) | The solubility (g/L) of carbon dioxide in solution |
| 25 | 0.5 | 28 | 12 |
Claims (6)
1. a kind of N methyldiethanol amine of compound decarbonization solvent, including 20wt% and the activator of 10～30wt%, its balance of water,
It is characterized in that：The activator is monoethanolamine.
2. compound decarbonization solvent according to claim 1, it is characterised in that：The concentration of activator adopts 15%wt%.
3. compound decarbonization solvent according to claim 1, it is characterised in that：Also include that concentration is 1～3wt%% foam inhibiting agents.
4. compound decarbonization solvent according to claim 3, it is characterised in that：Foam inhibiting agent adopts dimethicone.
5. compound decarbonization solvent according to claim 4, it is characterised in that：The concentration of foam inhibiting agent adopts 1.5wt%.
6. compound decarbonization solvent according to claim 1, it is characterised in that：The absorption temperature of compound decarbonization solvent adopts 20～30 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510727700.5A CN106621704A (en) | 2015-10-30 | 2015-10-30 | Composite decarbonization solvent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510727700.5A CN106621704A (en) | 2015-10-30 | 2015-10-30 | Composite decarbonization solvent |
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| Publication Number | Publication Date |
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| CN106621704A true CN106621704A (en) | 2017-05-10 |
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| CN201510727700.5A Pending CN106621704A (en) | 2015-10-30 | 2015-10-30 | Composite decarbonization solvent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394149A (en) * | 2020-03-26 | 2020-07-10 | 鲁昌宝 | High-efficiency dry-method coal-saving combined auxiliary agent for cement kiln and application thereof |
-
2015
- 2015-10-30 CN CN201510727700.5A patent/CN106621704A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394149A (en) * | 2020-03-26 | 2020-07-10 | 鲁昌宝 | High-efficiency dry-method coal-saving combined auxiliary agent for cement kiln and application thereof |
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Application publication date: 20170510 |
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| WD01 | Invention patent application deemed withdrawn after publication |