CN104741008A - Desulfuration film and application thereof in natural gas or petrochemical engineering gas purification - Google Patents
Desulfuration film and application thereof in natural gas or petrochemical engineering gas purification Download PDFInfo
- Publication number
- CN104741008A CN104741008A CN201510192343.7A CN201510192343A CN104741008A CN 104741008 A CN104741008 A CN 104741008A CN 201510192343 A CN201510192343 A CN 201510192343A CN 104741008 A CN104741008 A CN 104741008A
- Authority
- CN
- China
- Prior art keywords
- film
- parts
- desulfurizing
- kynoar
- desulfuration
- 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to the field of petrochemical engineering, in particular to a desulfuration film and application thereof in natural gas or petrochemical engineering gas purification. The desulfuration film provided by the invention is prepared by the following raw materials in parts by weight: 80-100 parts of polyvinylidene fluoride, 30-50 parts of polyethylene glycol 2000, 10-30 parts of polyvinylpyrrolidone, 10-30 parts of cyclodextrin, 5-10 parts of activated carbon. The invention provides an optional novel desulfuration film for a film desulfuration process; the desulfuration film has better permeation penetration amount and sulfur enrichment factors which achieve the satisfied level in the industry, and is far better than the existing polyvinylidene fluoride desulfuration film.
Description
Technical field
The present invention relates to petrochemical industry, be specifically related to a kind of desulfurizing film and the application in natural gas or petrochemical industry gas purification thereof.
Background technology
Natural gas is the mixture of hydrocarbon and plurality of impurities gas, comprising the sour gas such as hydrogen sulfide, carbon dioxide.For the thermal capacity in increase natural gas, reduce transfer pipeline, use the corrosion of equipment and prevent the pollution to air, these foreign gases must be removed before use or conveying from natural gas.At present, the desulfur technology be most widely used in the world using nitrogen methyl diethanolamine method as the wet desulphurization of desulfurizing agent, practical experience both domestic and external shows for many years, and this method also exists the problems such as equipment investment is high, flow process is complicated, desulfurizing agent number of dropouts large, the energy consumption of recovery desulfurizing agent is high, running cost is high.Develop cost-effective natural gas desulfur method, have very large economic benefit and social benefit.
Gas membrane Seperation Technology is the new and high technology grown up the eighties in last century, has had successful Application in all fields.For desulfurizing film, that commonly uses at present has PDMS film, PEG film, PI film, PU film etc.Sulfur enrichment factor and the penetrating amount of infiltration investigate the leading indicator of desulfurizing film performance.But in the desulfurizing film of current report, some possesses good sulfur enrichment factor, but it is not high to permeate penetrating amount, is not suitable for industrial applications; It is high that some films permeate penetrating amount, but sulfur enrichment factor is not high, causes desulfuration efficiency not good.In addition, desulfurization in the middle of some practical applications is not in use for some time, film can be subject to extremely swellingly even dissolving, the mechanical strength of film is caused to decline, make that penetrating amount increases greatly and sulfur enrichment factor reduces greatly, have in actual use frequently change desulfurizing film, considerably increase desulphurization cost.Therefore, develop the penetrating amount of a kind of Thief zone, high sulfur enrichment factor and can the desulfurizing film that can use for a long time be that this area research staff will pursue breakthrough, have great importance.
Summary of the invention
Technical problem to be solved by this invention is, can not take into account the penetrating amount of Thief zone, high sulfur enrichment factor and the long-time problem used, providing a kind of desulfurizing film to overcome desulfurizing film in prior art.
Technical problem to be solved by this invention is achieved by the following technical programs:
A kind of desulfurizing film, be made up of the raw material comprising following weight portion:
Kynoar or polyvinylidene fluoride copolymer 80 ~ 100 parts, Macrogol 2000 30 ~ 50 parts, polyvinylpyrrolidone 10 ~ 30 parts, cyclodextrin 10 ~ 30 parts, active carbon or modified activated carbon 5 ~ 20 parts.
In the preparation process of desulfurizing film, the number of the selection of raw material type and combination and use amount directly determines the sulfur enrichment factor of desulfurizing film and permeates penetrating amount, and the various combination of raw material type and each amounts of components all can cause the sulfur enrichment factor of desulfurizing film and permeate the greatest differences of penetrating amount.The present invention is that exploitation has the desulfurizing film of high sulfur enrichment factor, the penetrating amount of Thief zone and high strength, invents the performance test of recipe determination through a large amount of and desulfurizing film, determines above-mentioned optimum feed stock kind and consumption proportion.The present invention selects raw material Kynoar and polyethylene glycol crosslinked to make, and the mechanical performance of desulfurizing film improves, prolongation in service life; Also add cyclodextrin and active carbon in addition in raw material as filler, the sulfur enrichment factor of desulfurizing film can be improved and permeate penetrating amount.
As a kind of preferred version, described desulfurizing film, be made up of the raw material comprising following weight portion:
Kynoar or polyvinylidene fluoride copolymer 90 ~ 100 parts, Macrogol 2000 40 ~ 50 parts, polyvinylpyrrolidone 10 ~ 20 parts, cyclodextrin 10 ~ 20 parts, active carbon or modified activated carbon 5 ~ 10 parts.
As one most preferably scheme, described desulfurizing film, be made up of the raw material comprising following weight portion:
Kynoar or polyvinylidene fluoride copolymer 100 parts, Macrogol 2000 50 parts, polyvinylpyrrolidone 20 parts, cyclodextrin 20 parts, active carbon or modified activated carbon 8 parts.
As a kind of preferred version, described polyvinylidene fluoride copolymer is selected from Kynoar-hexafluoropropene and/or Kynoar-CTFE.Inventor shows to substitute Kynoar with Kynoar-hexafluoropropene and Kynoar-CTFE by research, can improve mechanical performance and the service life of desulfurizing film further.
As a kind of preferred version, described modified activated carbon is prepared by the method comprising following steps: active carbon is placed in containing mass concentration be the shitosan of 10 ~ 15%, the PAMC (CPAM) of 5 ~ 8% and 5 ~ 8 % polymethylacrylic acid N, flood 12 ~ 24h in the aqueous solution of N-dimethylamino ethyl ester (PDMAEMA), then active carbon is taken out put into Muffle furnace and at 600 ~ 800 DEG C, activate 1 ~ 3h and get final product.Inventor is found by research, and the modified activated carbon using this method to prepare in desulfurizing film formula, can improve the sulfur enrichment factor of desulfurizing film further, thus improve desulfurized effect further.
As a kind of preferred version, the molecular weight of described Kynoar is 40 ~ 600,000; Described cyclodextrin is beta-schardinger dextrin-.
The preparation method of described desulfurizing film, comprise following steps: by Kynoar and Macrogol 2000 mixing, be dissolved in organic solvent, then in organic solvent, polyvinylpyrrolidone, cyclodextrin and active carbon is added, abundant mixing, at 80 ~ 120 DEG C of temperature, stir 24 ~ 48h, according to demand, make difform film finally.
As a kind of preferred version, described organic solvent is 1-METHYLPYRROLIDONE, and its consumption is 6 ~ 10 times of Kynoar and the rear quality of Macrogol 2000 mixing.
As a kind of preferred version, said method stirs 24 ~ 36h at 100 ~ 120 DEG C of temperature.
As a kind of preferred version, described difform film, refers to hollow-fibre membrane, tubular membrane, Flat Membrane or rolled film.
As a kind of preferred version, described difform film, refers to and adopts dry-wet spinning technique to make hollow-fibre membrane.
The application of desulfurizing film of the present invention in high sulfur-bearing oil chemical gases or gasoline desulfur purified treatment.
The application of desulfurizing film of the present invention in the process of high sulfur-containing natural gas desulfurizing and purifying.
Beneficial effect: (1) the present invention is the desulfurizing film that film sulfur removal technology provides a kind of alternative novelty; (2) desulfurizing film described in has the well penetrating amount of infiltration and sulfur enrichment factor, and the two all reaches the good level of industry, is far superior to existing Kynoar desulfurizing film; (3) desulfurizing film described in has good mechanical strength, and service time is long, still has the penetrating amount of good infiltration and sulfur enrichment factor in use after 2000 hours; (4) desulfurizing film preparation technology of the present invention is simple, is applicable to industrialized production.
Detailed description of the invention
Explain the present invention further below in conjunction with specific embodiment, but embodiment does not limit in any form to the present invention.
Embodiment 1
By 1kg Kynoar (molecular weight is 400,000) and the mixing of 0.5kg Macrogol 2000, be dissolved in 10kgN-methyl pyrrolidone, then 0.2kg polyvinylpyrrolidone (mean molecule quantity is 40,000) is added in 1-METHYLPYRROLIDONE, the active carbon of 0.2kg beta-schardinger dextrin-and 0.1kg, abundant mixing, stirs 24h at 120 DEG C of temperature.Dry-wet spinning technique is adopted to make hollow-fibre membrane (internal diameter is 350 ~ 400 microns, external diameter 450 ~ 500 microns, membrane aperture 0.01 ~ 0.1 micron) again.Dry-wet spinning process conditions are dry-spinning path is 15cm, and extrusion pressure is 1.5MPa, and spinning solution temperature is 80 DEG C, interior coagulating bath flow 20ml/min, core liquid employing mass fraction is the dimethylacetamide amine aqueous solution of 20%, and coagulation bath adopts water, and coagulation bath temperature is 30 DEG C.
Embodiment 2
By 0.8kg Kynoar (molecular weight is 400,000) and the mixing of 0.3kg Macrogol 2000, be dissolved in 10kg 1-METHYLPYRROLIDONE, then 0.1kg polyvinylpyrrolidone (mean molecule quantity is 40,000) is added in 1-METHYLPYRROLIDONE, the active carbon of 0.1kg beta-schardinger dextrin-and 0.05kg, abundant mixing, stirs 48h at 80 DEG C of temperature.Dry-wet spinning technique is adopted to make hollow-fibre membrane (internal diameter is 350 ~ 400 microns, external diameter 450 ~ 500 microns, membrane aperture 0.01 ~ 0.1 micron) again.Dry-wet spinning process conditions are dry-spinning path is 15cm, and extrusion pressure is 1.5MPa, and spinning solution temperature is 80 DEG C, interior coagulating bath flow 20ml/min, core liquid employing mass fraction is the dimethylacetamide amine aqueous solution of 20%, and coagulation bath adopts water, and coagulation bath temperature is 30 DEG C.
Embodiment 3
By 0.9kg Kynoar (molecular weight is 600,000) and the mixing of 0.5kg Macrogol 2000, be dissolved in 15kg 1-METHYLPYRROLIDONE, then 0.3kg polyvinylpyrrolidone (mean molecule quantity is 40,000) is added in 1-METHYLPYRROLIDONE, the active carbon of 0.3kg beta-schardinger dextrin-and 0.06kg, abundant mixing, stirs 48h at 100 DEG C of temperature.Dry-wet spinning technique is adopted to make hollow-fibre membrane (internal diameter is 350 ~ 400 microns, external diameter 450 ~ 500 microns, membrane aperture 0.01 ~ 0.1 micron) again.Dry-wet spinning process conditions are dry-spinning path is 15cm, and extrusion pressure is 1.5MPa, and spinning solution temperature is 80 DEG C, interior coagulating bath flow 20ml/min, core liquid employing mass fraction is the dimethylacetamide amine aqueous solution of 20%, and coagulation bath adopts water, and coagulation bath temperature is 30 DEG C.
Embodiment 4
By 1kg Kynoar (molecular weight is 400,000) and the mixing of 0.5kg Macrogol 2000, be dissolved in 10kg 1-METHYLPYRROLIDONE, then 0.2kg polyvinylpyrrolidone (mean molecule quantity is 40,000) is added in 1-METHYLPYRROLIDONE, the active carbon of 0.2kg beta-schardinger dextrin-and 0.1kg, abundant mixing, stirs 24h at 120 DEG C of temperature.Then press filtration, degassed is carried out; Knifing on non-woven fabrics, to immerse in deionized water two days, puts into oven drying, obtain the Flat Membrane that thickness is 200 ~ 300 μm.
Embodiment 5
By 1kg Kynoar (molecular weight is 400,000) and the mixing of 0.5kg Macrogol 2000, be dissolved in 10kgN-methyl pyrrolidone, then 0.2kg polyvinylpyrrolidone (mean molecule quantity is 40,000) is added in 1-METHYLPYRROLIDONE, the modified active active carbon of 0.2kg beta-schardinger dextrin-and 0.1kg, abundant mixing, stirs 24h at 120 DEG C of temperature.Dry-wet spinning technique is adopted to make hollow-fibre membrane (internal diameter is 350 ~ 400 microns, external diameter 450 ~ 500 microns, membrane aperture 0.01 ~ 0.1 micron) again.Dry-wet spinning process conditions are dry-spinning path is 15cm, and extrusion pressure is 1.5MPa, and spinning solution temperature is 80 DEG C, interior coagulating bath flow 20ml/min, core liquid employing mass fraction is the dimethylacetamide amine aqueous solution of 20%, and coagulation bath adopts water, and coagulation bath temperature is 30 DEG C;
Described modified active active carbon prepares by the following method: after the drying of active carbon washed with de-ionized water, be placed in containing mass concentration be the shitosan of 10%, the PAMC (CPAM) of 5% and 5 % polymethylacrylic acid N, flood 12h in the aqueous solution of N-dimethylamino ethyl ester (PDMAEMA), then active carbon is taken out put into Muffle furnace and at 600 DEG C, activate 1.5h and get final product.
Embodiment 6
By 1kg Kynoar-hexafluoropropene and the mixing of 0.5kg Macrogol 2000, be dissolved in 10kg 1-METHYLPYRROLIDONE, then 0.2kg polyvinylpyrrolidone (mean molecule quantity is 40,000) is added in 1-METHYLPYRROLIDONE, the modified active active carbon of 0.2kg beta-schardinger dextrin-and 0.2kg, abundant mixing, stirs 24h at 120 DEG C of temperature.Dry-wet spinning technique is adopted to make hollow-fibre membrane (internal diameter is 350 ~ 400 microns, external diameter 450 ~ 500 microns, membrane aperture 0.01 ~ 0.1 micron) again.Dry-wet spinning process conditions are dry-spinning path is 15cm, and extrusion pressure is 1.5MPa, and spinning solution temperature is 80 DEG C, interior coagulating bath flow 20ml/min, core liquid employing mass fraction is the dimethylacetamide amine aqueous solution of 20%, and coagulation bath adopts water, and coagulation bath temperature is 30 DEG C;
Described modified active active carbon prepares by the following method: after the drying of active carbon washed with de-ionized water, be placed in containing mass concentration be the shitosan of 15%, the PAMC (CPAM) of 8% and 8 % polymethylacrylic acid N, flood 12h in the aqueous solution of N-dimethylamino ethyl ester (PDMAEMA), then active carbon is taken out put into Muffle furnace and at 800 DEG C, activate 1h and get final product.
The performance test of embodiment 7 desulfurizing film
The evaluation of the separating property of desulfurizing film is undertaken by infiltration evaporation device and microcoulomb, with thiophene, toluene, cyclohexene, cyclohexane, normal heptane by volume for 1:300-400:400-500:100-200:750-850 is mixed with the analog gasoline that sulfur content is 300 μ about g/g.At 75 DEG C, the sulfur enrichment factor of desulfurizing film for preparing of testing example 1 ~ 5 and permeate penetrating amount respectively, and sulfur enrichment factor after using test respectively to use 1000h, 2000h and 4000h and permeate penetrating amount.Use commercial existing Kynoar desulfurizing film to contrast, test result is shown in Table 1.
The performance test of table 1. desulfurizing film
| Permeate penetrating amount/kg/ (m2h) | Sulfur enrichment factor | |
| Embodiment 1 desulfurizing film | 11.8 | 21.1 |
| Embodiment 1 desulfurizing film (1000h) | 12.6 | 19.7 |
| Embodiment 1 desulfurizing film (2000h) | 13.9 | 15.3 |
| Embodiment 1 desulfurizing film (4000h) | 19.1 | 8.6 |
| Embodiment 2 desulfurizing film | 11.2 | 20.1 |
| Embodiment 2 desulfurizing film (1000h) | 12.5 | 17.8 |
| Embodiment 2 desulfurizing film (2000h) | 14.9 | 14.1 |
| Embodiment 2 desulfurizing film (4000h) | 20.4 | 8.0 |
| Embodiment 3 desulfurizing film | 10.4 | 19.0 |
| Embodiment 3 desulfurizing film (1000h) | 12.1 | 16.9 |
| Embodiment 3 desulfurizing film (2000h) | 14.3 | 13.8 |
| Embodiment 3 desulfurizing film (4000h) | 19.6 | 7.6 |
| Embodiment 4 desulfurizing film | 11.4 | 20.6 |
| Embodiment 4 desulfurizing film (1000h) | 12.6 | 19.1 |
| Embodiment 4 desulfurizing film (2000h) | 14.7 | 14.0 |
| Embodiment 4 desulfurizing film (4000h) | 18.9 | 7.8 |
| Embodiment 5 desulfurizing film | 11.6 | 36.2 |
| Embodiment 5 desulfurizing film (1000h) | 12.5 | 34.4 |
| Embodiment 5 desulfurizing film (2000h) | 14.3 | 30.1 |
| Embodiment 5 desulfurizing film (4000h) | 18.5 | 22.5 |
| Embodiment 6 desulfurizing film | 11.5 | 36.8 |
| Embodiment 6 desulfurizing film (1000h) | 12.8 | 34.6 |
| Embodiment 6 desulfurizing film (2000h) | 13.7 | 30.9 |
| Embodiment 6 desulfurizing film (4000h) | 15.5 | 25.3 |
| Kynoar desulfurizing film (commercial) | 1.8 | 5.2 |
| Kynoar desulfurizing film (1000h) | 2.9 | 3.0 |
| Kynoar desulfurizing film (2000h) | 6.0 | 0.15 |
| Kynoar desulfurizing film (4000h) | - | - |
As can be seen from the penetrating amount of the infiltration in upper table and sulfur enrichment factor data, the desulfurizing film that the present invention prepares has very excellent performance.It permeates penetrating amount and sulfur enrichment factor, and the two all reaches the level of industry advanced person, is far superior to existing Kynoar desulfurizing film.In addition, the data of 1000,2000 and 4000 hours are used from film, permeate penetrating amount and sulfur enrichment factor change afterwards not quite in use long-time (2000h), and still there is the penetrating amount of good infiltration and sulfur enrichment factor, use can be continued to more than 4000h.And existing Kynoar desulfurizing film penetrating amount after use 2000h sharply increases, sulfur enrichment factor reduces greatly, and desulfurized effect reduces greatly, can not continue to use again.In addition, as can be seen from the desulfurizing film data of embodiment 5 and 6, after using modified activated carbon of the present invention in formula, its sulfur enrichment factor improves further.As can be seen from the desulfurizing film data of embodiment 6, use vinylidene fluoride copolymers in formula, can improve the service life of desulfurizing film further, after using 4000h, desulfurizing film still has good performance.
Claims (10)
1. a desulfurizing film, is characterized in that, is made up of the raw material comprising following weight portion:
Kynoar or polyvinylidene fluoride copolymer 80 ~ 100 parts, Macrogol 2000 30 ~ 50 parts, polyvinylpyrrolidone 10 ~ 30 parts, cyclodextrin 10 ~ 30 parts, active carbon or modified activated carbon 5 ~ 20 parts.
2. desulfurizing film according to claim 1, is characterized in that, is made up of the raw material comprising following weight portion:
Kynoar 90 ~ 100 parts, Macrogol 2000 40 ~ 50 parts, polyvinylpyrrolidone 10 ~ 20 parts, cyclodextrin 10 ~ 20 parts, active carbon or modified activated carbon 5 ~ 10 parts.
3. desulfurizing film according to claim 1 and 2, is characterized in that, described polyvinylidene fluoride copolymer is selected from Kynoar-hexafluoropropene and/or Kynoar-CTFE.
4. desulfurizing film according to claim 1 and 2, it is characterized in that, described modified activated carbon is prepared by the method comprising following steps: active carbon is placed in containing mass concentration be the shitosan of 10 ~ 15%, the PAMC of 5 ~ 8% and 5 ~ 8 % polymethylacrylic acid N, flood 12 ~ 24h in the aqueous solution of N-dimethylamino ethyl ester, then active carbon is taken out put into Muffle furnace and at 600 ~ 800 DEG C, activate 1 ~ 3h and get final product.
5. the preparation method of the desulfurizing film described in any one of claim 1 ~ 2, it is characterized in that, comprise following steps: by Kynoar or polyvinylidene fluoride copolymer, Macrogol 2000 mixing, be dissolved in organic solvent, then in organic solvent, add polyvinylpyrrolidone and cyclodextrin and active carbon or modified activated carbon, fully mix, at 80 ~ 120 DEG C of temperature, stir 24 ~ 48h, according to demand, make difform film finally.
6. preparation method according to claim 5, is characterized in that, described organic solvent is 1-METHYLPYRROLIDONE, and its consumption is 6 ~ 10 times of Kynoar and the rear quality of Macrogol 2000 mixing.
7. preparation method according to claim 5, is characterized in that, at 100 ~ 120 DEG C of temperature, stir 24 ~ 36h.
8. preparation method according to claim 5, is characterized in that, described difform film, refers to hollow-fibre membrane, tubular membrane, Flat Membrane or rolled film.
9. preparation method according to claim 5, is characterized in that, described difform film, refers to and adopts dry-wet spinning technique to make hollow-fibre membrane.
10. the application of the desulfurizing film described in any one of claim 1 ~ 2 in high sulfur-bearing oil chemical gases, gasoline or selexol process purified treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192343.7A CN104741008B (en) | 2015-04-21 | 2015-04-21 | A kind of desulfurizing film and its application in natural gas or petrochemical industry gas purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192343.7A CN104741008B (en) | 2015-04-21 | 2015-04-21 | A kind of desulfurizing film and its application in natural gas or petrochemical industry gas purification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104741008A true CN104741008A (en) | 2015-07-01 |
| CN104741008B CN104741008B (en) | 2017-08-29 |
Family
ID=53581601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510192343.7A Expired - Fee Related CN104741008B (en) | 2015-04-21 | 2015-04-21 | A kind of desulfurizing film and its application in natural gas or petrochemical industry gas purification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104741008B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114950153A (en) * | 2022-03-01 | 2022-08-30 | 泰州九润环保科技有限公司 | High-flux PEG/PVDF composite desulfurization membrane and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2391256A1 (en) * | 1999-07-27 | 2001-02-01 | Union Carbide Chemicals & Plastics Technology Corporation | Process for removing contaminants from gas using polyethylene glycols |
| JP2001200279A (en) * | 2000-01-21 | 2001-07-24 | Taiyo Engineering Co Ltd | Purification process of liquefied petroleum gas |
| CN101249390A (en) * | 2008-04-08 | 2008-08-27 | 天津森诺过滤技术有限公司 | Hybridization film for FCC gasoline desulfurize and method of preparing the same |
| CN101791537A (en) * | 2010-02-11 | 2010-08-04 | 天津城市建设学院 | Modified sludge activated carbon used for low-concentration flue gas desulfurization and denitration and preparation method thereof |
| CN101804329A (en) * | 2010-04-22 | 2010-08-18 | 南京工业大学 | Adsorbent used for desulfurating gasoline, preparation method thereof and method for desulfurating gasoline by the same |
| WO2010101731A1 (en) * | 2009-03-02 | 2010-09-10 | Saudi Arabian Oil Company | Enhancement of acid gas enrichment process |
-
2015
- 2015-04-21 CN CN201510192343.7A patent/CN104741008B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2391256A1 (en) * | 1999-07-27 | 2001-02-01 | Union Carbide Chemicals & Plastics Technology Corporation | Process for removing contaminants from gas using polyethylene glycols |
| JP2001200279A (en) * | 2000-01-21 | 2001-07-24 | Taiyo Engineering Co Ltd | Purification process of liquefied petroleum gas |
| CN101249390A (en) * | 2008-04-08 | 2008-08-27 | 天津森诺过滤技术有限公司 | Hybridization film for FCC gasoline desulfurize and method of preparing the same |
| WO2010101731A1 (en) * | 2009-03-02 | 2010-09-10 | Saudi Arabian Oil Company | Enhancement of acid gas enrichment process |
| CN101791537A (en) * | 2010-02-11 | 2010-08-04 | 天津城市建设学院 | Modified sludge activated carbon used for low-concentration flue gas desulfurization and denitration and preparation method thereof |
| CN101804329A (en) * | 2010-04-22 | 2010-08-18 | 南京工业大学 | Adsorbent used for desulfurating gasoline, preparation method thereof and method for desulfurating gasoline by the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114950153A (en) * | 2022-03-01 | 2022-08-30 | 泰州九润环保科技有限公司 | High-flux PEG/PVDF composite desulfurization membrane and preparation method thereof |
| CN114950153B (en) * | 2022-03-01 | 2023-10-31 | 泰州九润环保科技有限公司 | High-flux PEG/PVDF composite desulfurization membrane and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104741008B (en) | 2017-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ibrahim et al. | CO2 capture using hollow fiber membranes: A review of membrane wetting | |
| Chong et al. | Recent progress of oxygen/nitrogen separation using membrane technology | |
| Chen et al. | Membrane gas separation technologies for biogas upgrading | |
| Kianfar | An experimental study PVDF and PSF hollow fiber membranes for chemical absorption carbon dioxide | |
| Ismail et al. | Effect of polymer concentration on the morphology and mechanical properties of asymmetric polysulfone (PSf) membrane | |
| CN101850949A (en) | Method with high purity and high recovery rate for purifying hydrogen gas in coke oven gas | |
| US20140137735A1 (en) | Polyimide membranes and method of production | |
| CN113769593B (en) | Nanofiltration membrane for extracting lithium from salt lake and preparation method thereof | |
| US20120297984A1 (en) | Gas separation membrane for dme production process | |
| CN104841288A (en) | Composite microgel membrane for CO2/N2 gas separation and preparation method thereof | |
| CN101760270A (en) | Method for removing and recycling CO2 in natural gas | |
| CN110975646B (en) | Preparation method of hollow fiber composite membrane for separating carbon dioxide in mixed gas | |
| CN106693730B (en) | Based on nonmetallic more doping nTiO2Visible light catalytic hollow fiber ultrafiltration membrane and preparation method | |
| CN104741008A (en) | Desulfuration film and application thereof in natural gas or petrochemical engineering gas purification | |
| CN105457455A (en) | Method for removing acidic gases in shift gas | |
| CN105498449B (en) | A kind of CO2Absorbent solution | |
| Gao et al. | Preparation of heat-treated PAN/SiO2 hybrid hollow fiber membrane contactor for acetylene absorption | |
| CN101590375B (en) | Composite membrane for removing organic sulfide from liquefied gas and preparation method thereof | |
| Sunder et al. | Investigation on the effects of air gap distance on the formation of cellulose triacetate hollow fiber membrane for CO2 and CH4 gases permeation | |
| CN106925134A (en) | A kind of organo-mineral complexing biogas desulfurization film and preparation method thereof | |
| Tomczak et al. | Biogas upgrading using a single-membrane system: A review | |
| CN110975637B (en) | Preparation method of gallic acid-chitosan/polysulfone composite nanofiltration membrane | |
| CN109251765B (en) | Polyurethane/polyvinylidene fluoride composite membrane for extracting organic sulfide from naphtha and preparation method thereof | |
| WO2016108934A1 (en) | Polyimide membrane for h2s removal | |
| DE112020002779T5 (en) | MODIFIED POROUS MEMBRANE MATERIAL, PROCESS OF THEIR PRODUCTION AND A PROCESS FOR SEPARATION OF THE LIQUID MEMBRANE FROM CARBON DIOXIDE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tang Jie Inventor after: Wu Quanhong Inventor after: Chen Yanwen Inventor after: Liu Qing Inventor after: Wang Ling Inventor after: Luo Qiangxian Inventor after: Lu Binrong Inventor before: Chen Yanwen Inventor before: Tang Jie Inventor before: Wu Quanhong Inventor before: Lu Binrong Inventor before: Wang Ling Inventor before: Li Na Inventor before: Kuang Di Inventor before: Mo Yong Inventor before: Luo Qiangxian |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170829 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |