CN106310873A - Selective desulphurization solvent of refinery gas - Google Patents
Selective desulphurization solvent of refinery gas Download PDFInfo
- Publication number
- CN106310873A CN106310873A CN201510335798.XA CN201510335798A CN106310873A CN 106310873 A CN106310873 A CN 106310873A CN 201510335798 A CN201510335798 A CN 201510335798A CN 106310873 A CN106310873 A CN 106310873A
- Authority
- CN
- China
- Prior art keywords
- amine
- desulfurization solvent
- concentration
- accounts
- solvent
- 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.)
- Pending
Links
Abstract
A novel selective desulphurization solvent of refinery gas, adopted in a refinery gas desulphurization apparatus, belongs to the field of gas purification. The novel selective desulphurization solvent of refinery gas comprises 10-35 wt% of N-methyldiethanolamine (MDEA), 3-12 wt% of hindrance amine, 0.1-2.5 wt% of an activator, an antifoaming agent, and the balance of deionized water, and the antifoaming agent is a composite antifoaming agent composed of dimethicone, tributyl phosphate and polyethylene glycol. The novel selective desulphurization solvent of refinery gas has the advantages of good H2S removal selectivity, high absorption liquid desulfurization rate and low cost.
Description
Technical field
The invention belongs to field of gas purification, be specifically related to a kind of selective desulfurization solvent in refinery gas desulfurizer.
Background technology
Refinery gas contains a certain amount of H2S、CO2And organic sulfur, H2S, organic sulfur (COS, methanthiol etc.) are a kind of severe toxicity and colourless fuel gas, and its existence seriously threatens personal safety, and can cause the corrosion of equipment and pipeline, even if sulfide also has the abnormal smells from the patient being difficult to still be subject under extremely low concentration level simultaneously.Therefore, must remove, before conveying and processing, the requirement that is up to state standards.Usual H in raw material of industry gas2S and CO2And deposit, CO2There is certain chemical inertness, unless the needs of subsequent technique typically need not remove.Selectively removing H2S can reduce energy consumption, reduces absorbent usage amount, reduces production cost, brings certain benefit for enterprise.The wet desulphurization of refinery gas purifies, and commonly uses alkanolamine method at present, still can meet Production requirement.Along with energy-intensive aggravation and the raising day by day of environmental requirement, the requirement to selective desulfurization is more and more higher, and traditional desulfurizing agent can not meet requirement.Require and reduce energy consumption and the loss of amine liquid to meet tightened up environmental regulation, it is necessary to select novel desulfurization solvent.
Summary of the invention
It is an object of the invention to, it is proposed that selective desulfurization solvent in a kind of refinery gas desulfurizer, refinery gas new selective desulfurization solvent is to H2The removing of S has a more preferable selectivity, and the absorbing liquid remarkable advantages such as to have desulfurization degree high, low cost.
The main technical schemes of the present invention: the selective desulfurization solvent of refinery gas, it is characterized in that being made up of N methyldiethanol amine (MDEA), bulky amine, activator, defoamer and deionized water, wherein the concentration of N methyldiethanol amine (MDEA) is 10%～35%(wt), the concentration of bulky amine is 3%～12%(wt)；Bulky amine is to bring the alcamine compound of one or more non-linear with sterically hindered structure on nitrogen-atoms, and bulky amine is a kind of single sterically hindered amines or the mixture of multiple sterically hindered amines；The concentration of activator is 0.1%～3%(wt), surplus is deionized water.
Usually, in described desulfurization solvent, the concentration of N methyldiethanol amine (MDEA) is 15～30%(wt), the concentration of bulky amine is 5～10%(wt).
The bulky amine of described desulfurization solvent includes one or more mixture in piperazine, 2-piperidine ethanol, tert-butylamine base diethanolamine.
The activator of described desulfurization solvent is oxalic acid and the mixture of phosphoric acid composition, and oxalic acid accounts for absorbing liquid 0.1～2.5%(wt), phosphoric acid accounts for absorbing liquid 0.1～2.5%(wt).
Described defoamer is dimethicone, tributyl phosphate, the mixture of Polyethylene Glycol composition；Described defoamer dimethicone accounts for amine aqueous solution 0.01～0.05%(wt), tributyl phosphate accounts for amine aqueous solution 0.01～0.05%(wt), Polyethylene Glycol accounts for amine aqueous solution 0.01～0.05%(wt).
The present invention, compared with traditional hydramine desulfurization solvent, has the advantages such as desulfurization degree high, selectivity good, good stability, low price.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in detail in.
Embodiment: mixed gas composition (mol ratio): CO2 3.6%、H2S 1.5%, remaining N2, mixed gas enters in the absorption tube equipped with liquid to be evaluated, and tolerance 100ml/min absorbs at 40 DEG C of atmospheric bubblings.At regular intervals, emptying gas is carried out sampling analysis, is then shut off source of the gas, take the rich solution after absorption and carry out liquid phase analysis.H in unstripped gas and liquid phase2S uses iodimetric titration, purifies H in gas2The employing FPD chromatography of S, gas phase acid gas uses Aus-gas analyzer analytic process, and liquid phase acid gas uses gas evolution method.
Evaluation criterion:
In formula: l represents rich solution liquid phase after absorption, g represents tail gas gas phase, [H2S] and [CO2] represent the concentration analyzed.
Selectivity experimental result see table:
。
Result shows: the desulfuration selectivity of embodiment of the present invention absorbing liquid is substantially better than the MDEA solution of comparative example.
Claims (7)
1. the selective desulfurization solvent of a refinery gas, it is characterized in that being made up of N methyldiethanol amine (MDEA), bulky amine, activator, defoamer and deionized water, wherein the concentration of N methyldiethanol amine (MDEA) is 10%～35%(wt), the concentration of bulky amine is 3%～12%(wt)；Bulky amine is to bring the alcamine compound of one or more non-linear with sterically hindered structure on nitrogen-atoms, and bulky amine is a kind of single sterically hindered amines or the mixture of multiple sterically hindered amines；The concentration of activator is 0.1%～3%(wt), surplus is deionized water.
Desulfurization solvent the most according to claim 1, it is characterised in that the concentration of N methyldiethanol amine (MDEA) is 15～30%(wt), the concentration of bulky amine is 5～10%(wt).
Desulfurization solvent the most according to claim 1 and 2, it is characterised in that bulky amine includes one or more mixture in piperazine, 2-piperidine ethanol, tert-butylamine base diethanolamine.
Desulfurization solvent the most according to claim 1, it is characterised in that described activator is oxalic acid and the mixture of phosphoric acid composition.
5. according to the desulfurization solvent described in claim 1 or 4, it is characterised in that described oxalic acid accounts for absorbing liquid 0.1%～1.5%(wt), phosphoric acid accounts for absorbing liquid 0.1%～1.5%(wt).
Desulfurization solvent the most according to claim 1, it is characterised in that described anti-defoamer is dimethicone, tributyl phosphate, the mixture of Polyethylene Glycol composition.
7. according to the desulfurization solvent described in claim 1 or 6, it is characterised in that described dimethicone accounts for amine aqueous solution 0.01%～0.05%(wt), tributyl phosphate accounts for amine aqueous solution 0.01%～0.05%(wt), Polyethylene Glycol accounts for amine aqueous solution 0.01%～0.05%(wt).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510335798.XA CN106310873A (en) | 2015-06-17 | 2015-06-17 | Selective desulphurization solvent of refinery gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510335798.XA CN106310873A (en) | 2015-06-17 | 2015-06-17 | Selective desulphurization solvent of refinery gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106310873A true CN106310873A (en) | 2017-01-11 |
Family
ID=57732466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510335798.XA Pending CN106310873A (en) | 2015-06-17 | 2015-06-17 | Selective desulphurization solvent of refinery gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106310873A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108816196A (en) * | 2018-07-24 | 2018-11-16 | 淄博凯美可工贸有限公司 | Highly selective Compositional type reclaiming agent and preparation method thereof |
| CN110628476A (en) * | 2018-06-21 | 2019-12-31 | 中国石油化工股份有限公司 | Pretreatment method and purifying agent for refinery rich gas and desulfurization method for dry gas and/or liquefied gas |
| CN110628475A (en) * | 2018-06-21 | 2019-12-31 | 中国石油化工股份有限公司 | Process for pretreating rich gas in refinery and process for desulfurizing dry gas and/or liquefied gas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264413A (en) * | 2008-04-30 | 2008-09-17 | 王胜利 | Total sulfides removing solvent and preparation thereof |
| US20130243676A1 (en) * | 2012-03-14 | 2013-09-19 | Exxonmobil Research And Engineering Company | Amine treating process for acid gas separation using blends of amines and alkyloxyamines |
| CN104174254A (en) * | 2013-05-22 | 2014-12-03 | 中国石油化工股份有限公司 | Absorption liquid for selectively removing H2S in CO2-containing gas mixture |
-
2015
- 2015-06-17 CN CN201510335798.XA patent/CN106310873A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264413A (en) * | 2008-04-30 | 2008-09-17 | 王胜利 | Total sulfides removing solvent and preparation thereof |
| US20130243676A1 (en) * | 2012-03-14 | 2013-09-19 | Exxonmobil Research And Engineering Company | Amine treating process for acid gas separation using blends of amines and alkyloxyamines |
| CN104174254A (en) * | 2013-05-22 | 2014-12-03 | 中国石油化工股份有限公司 | Absorption liquid for selectively removing H2S in CO2-containing gas mixture |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628476A (en) * | 2018-06-21 | 2019-12-31 | 中国石油化工股份有限公司 | Pretreatment method and purifying agent for refinery rich gas and desulfurization method for dry gas and/or liquefied gas |
| CN110628475A (en) * | 2018-06-21 | 2019-12-31 | 中国石油化工股份有限公司 | Process for pretreating rich gas in refinery and process for desulfurizing dry gas and/or liquefied gas |
| CN110628476B (en) * | 2018-06-21 | 2020-11-13 | 中国石油化工股份有限公司 | Pretreatment method and purifying agent for refinery rich gas and desulfurization method for dry gas and/or liquefied gas |
| CN108816196A (en) * | 2018-07-24 | 2018-11-16 | 淄博凯美可工贸有限公司 | Highly selective Compositional type reclaiming agent and preparation method thereof |
| CN108816196B (en) * | 2018-07-24 | 2021-05-14 | 淄博凯美可工贸有限公司 | High-selectivity compound desulfurizer and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2014336725B2 (en) | Method for removal of SOx from gas using compound amine alcohol solution | |
| CN103357261B (en) | A kind of composite desulfurizing agent and preparation method thereof | |
| EP3081283B1 (en) | Method for removing sox in gas by using ethylene glycol complex solution | |
| US8568676B2 (en) | Process for workup of a carbon dioxide-rich gas to be freed of sulfur components | |
| US8313718B2 (en) | Method and composition for removal of mercaptans from gas streams | |
| EP3090797B1 (en) | Method for removing sox from gas using a polyol complex solution | |
| US9795917B2 (en) | Method for removing SOx from gas with modified polyethylene glycol | |
| CN108472575B (en) | Method for increasing selectivity and capacity for capturing hydrogen sulfide from acid gas | |
| MX2018004013A (en) | Absorption agent and a method for selectively removing hydrogen sulphide. | |
| CN106310873A (en) | Selective desulphurization solvent of refinery gas | |
| CN104815525A (en) | Treating agent for mixing acid components in mixed gases | |
| CN105084466B (en) | The desulfurizing agent purification technique and device of a kind of sulfurous gas | |
| CN104174254A (en) | Absorption liquid for selectively removing H2S in CO2-containing gas mixture | |
| KR102020293B1 (en) | Acid gas separation method using acid gas sorbent based on ionic liquid | |
| CN106854478A (en) | A kind of absorbing liquid containing ionic liquid activator | |
| CN109069983B (en) | Premixture for making absorbent for removing acid gases from fluid streams | |
| AU2011320717B2 (en) | Use of 2-(3-aminopropoxy)ethan-1-ol as an absorbent to remove acidic gases | |
| CN102343204A (en) | Method for removing sulfides from acidic gas flow | |
| CN104624024B (en) | A kind of Compositional type active additive and its application | |
| KR101422671B1 (en) | Phase separation absorbent composition for removing acid gas and removing method of acid gas | |
| CN108822908A (en) | A kind of natural gas organic sulfur removal agent and preparation method thereof | |
| CN103949141B (en) | A kind of process the method for by-product thiosulfate anion in organic amine doctor solution | |
| CN106540516A (en) | The Special desulfurizing agent of mercaptan is removed in a kind of natural gas | |
| EP3442681A1 (en) | Composition comprising organoborates and physical solvents and use thereof for the removal of acid gases from hydrocarbon fluid streams | |
| CN112774418A (en) | Deep desulfurization and decarburization solvent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170111 |