CN103468338A - Ambient temperature fine desulfurization method of low-sulfur natural gas - Google Patents
Ambient temperature fine desulfurization method of low-sulfur natural gas Download PDFInfo
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Abstract
The invention provides an ambient temperature fine desulfurization method of low-sulfur natural gas. The method comprises the steps of contacting the low-sulfur natural gas with an iron oxide fine desulfurization agent and then contacting with a modified activated carbon fine desulfurization agent to obtain the natural gas after fine desulfurization. The ambient temperature fine desulfurization method has the advantages that alkali-free operation and oxygen-free operation are realized, structure is simple, operation cost is low, energy consumption is low and the like; after the method is used for carrying out fine desulfurization on the natural gas under the conditions of room temperature and normal pressure, the content of the hydrogen sulfide of the natural gas is less than 0.1ppmv, the content of organic sulfide of the natural gas is less than 1ppmv, the natural gas does not have obvious odor, and the total sulphur content reaches the requirement of national standard or industrial standard.
Description
Technical field
The present invention relates to a kind of constant temperature fine desulfurizing method of low sulfur-containing gas, belong to the selexol process technical field in petrochemical industry.
Background technology
Sweet natural gas has a wide range of applications in people's lives and industry as a kind of resource of preciousness.It is as a kind of efficient, high-quality, clean energy, not only widespread use in industry and city domestic gas, and also more and more play a significant role in power-generating industry.Sweet natural gas or good industrial chemicals, be widely used in synthetic ammonia, methyl alcohol, nitrogen fertilizer industry, synthetic fiber industry etc.Due to the further understanding of people to healthy and environmental protection, people have proposed requirements at the higher level to the quality of Sweet natural gas.
Although current Sweet natural gas removes most hydrogen sulfide in Sweet natural gas through wet desulfurizing process, also contains the hydrogen sulfide of 200-300ppmv and a small amount of organic sulfide in the Sweet natural gas after wet desulphurization.The sulfide of low levels still can cause the e-quipment and pipe burn into to distribute unpleasant stink, contaminate environment, affect the problems such as HUMAN HEALTH.Therefore, need to remove the sulfide in low sulfur-containing gas, to meet the service requirements of plant produced and civilian commodity gas, make the total sulfur content of product reach country or industry standard (GB17820-2012) requirement.
Existing low sulfur-containing gas sulfur method is generally to adopt alkali wash to remove the hydrogen sulfide in Sweet natural gas, then adopts hydrodesulfurizationprocess process that organic sulfide is changed into to hydrogen sulfide, then adopts high temperature oxidation zinc sweetening agent to remove the hydrogen sulfide of generation.The hydrodesulfurizationprocess process hydrogenation that need to constantly circulate, improve pressure and temperature (generally will reach 300-400 ℃) and just can make sweetening process reach effect preferably.Mainly there is following shortcoming in existing low sulfur-containing gas sulfur method: (1), need to use a large amount of alkali lye, causing producing a large amount of salkali waste, salkali waste processes that not only expense is very high, and has polluted environment; (2), need hydroprocessing, consume a large amount of valuable hydrogen, cause the investment of equipment large, complex process, process cost is high.Except above-mentioned sulfur method, the method that also exists catalyzed oxidation to carry out desulfurization, but the method need to be used a large amount of catalyzer, has increased cost, to the requirement of experiment harshness, and has the easily shortcoming such as loss of catalyst activity component.
Therefore, develop a kind of constant temperature fine desulfurizing method of low sulfur-containing gas, be still one of this area problem demanding prompt solution.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of constant temperature fine desulfurizing method of low sulfur-containing gas.Constant temperature fine desulfurizing method of the present invention have alkali-free operation, oxygen free operation and simple to operate, process cost is low and low power consumption and other advantages, the total sulfur content that adopts method of the present invention to carry out the Sweet natural gas after smart desulfurization reaches the industry standard requirement of GB17820-2012.
For reaching above-mentioned purpose, the invention provides a kind of constant temperature fine desulfurizing method of low sulfur-containing gas, it comprises the following steps: make low sulfur-containing gas and after iron oxide fine desulfurizer is contacted, then contacted with the modified activated carbon desulfurizing agent, obtain the Sweet natural gas after smart desulfurization.
According to the specific embodiment of the present invention, preferably, aforesaid method comprises the following steps: make low sulfur-containing gas successively through in-built reactor A and the in-built reactor B that iron oxide fine desulfurizer is arranged that iron oxide fine desulfurizer is arranged, and then successively through in be equipped with the modified activated carbon desulfurizing agent reactor C and in the reactor D of modified activated carbon desulfurizing agent is housed, obtain the Sweet natural gas after smart desulfurization.Between reactor A, reactor B, reactor C and reactor D, all be connected in series, low sulfur-containing gas can pass through reactor A, reactor B, reactor C and reactor D from top to bottom successively, to reach the purpose of smart desulfurization.
In above-mentioned method, preferably, the temperature in described reactor A and described reactor B is respectively 0-90 ℃, and pressure is respectively 0.1-4.0MPa, and the gas air speed is respectively 30-1000h
-1.That is to say, temperature when low sulfur-containing gas contacts with iron oxide fine desulfurizer is 0-90 ℃, and pressure is 0.1-4.0MPa, and the gas air speed is 30-1000h
-1.Temperature in reactor A and reactor B, the gentle air speed of pressure all can be identical or different.
In above-mentioned method, preferably, the temperature in described reactor C and described reactor D is respectively 0-90 ℃, and pressure is respectively 0.1-4.0MPa, and the gas air speed is respectively 30-1000h
-1.That is to say, temperature when the low sulfur-containing gas after contacted iron oxide fine desulfurizer contacts with the modified activated carbon desulfurizing agent is 0-90 ℃, and pressure is 0.1-4.0MPa, and the gas air speed is 30-1000h
-1.The gentle air speed of temperature, pressure in reactor C and reactor D all can be identical or different.
In above-mentioned method, the gentle air speed of temperature, pressure when the gentle air speed of temperature, pressure when low sulfur-containing gas contacts with iron oxide fine desulfurizer contacts with the modified activated carbon desulfurizing agent with the low sulfur-containing gas after contacted iron oxide fine desulfurizer all can be identical or different.That is to say, the gentle air speed of temperature, pressure in reactor A, reactor B, reactor C and reactor D all can be identical or different.
In above-mentioned method, preferably, the gross weight of described iron oxide fine desulfurizer of take is benchmark, and its chemical constitution comprises: Fe
2o
320%-50%, ZnO0.1%-3%, CuO0.1%-1%, MnO0.1%-20%, SiO
25%-30% and CaO5%-30%, and the weight percent sum of each component equals 100%.
In above-mentioned method, preferably, the specification of described iron oxide fine desulfurizer is Φ 3-5 * 5-15mm, intensity>=30N/cm, and specific surface area is 60-100m
2/ g, bulk density is 0.7-0.8g/mL, hydrogen sulfide penetrates the gross weight of Sulfur capacity>=15%(in sweetening agent, the amount of sweetening agent absorption sulphur).
In above-mentioned method, preferably, described modified activated carbon desulfurizing agent is for take gac as carrier, the modified activated carbon desulfurizing agent of one or both in load cupric nitrate load nickelous nitrate, manganous nitrate and zinc nitrate; Wherein, in the quality of cupric oxide, the 1-10% that the charge capacity of cupric nitrate is the carrier quality; In the quality of metal oxide, the 10-25% that the charge capacity of the total amount of one or both in nickelous nitrate, manganous nitrate and zinc nitrate is the carrier quality.
In above-mentioned method, preferably, the specification of described modified activated carbon desulfurizing agent is Φ 2-3mm, intensity>=60N/, specific surface area>150m
2/ g, bulk density is 0.6-0.7g/mL, organic sulfide penetrates the gross weight of Sulfur capacity>=10%(in sweetening agent, the amount of sweetening agent absorption sulphur).Modified activated carbon desulfurizing agent of the present invention has the effect that removes preferably COS in Sweet natural gas, and the present invention is without the catalyst-assembly of setting up de-COS.
In above-mentioned method, the form that iron oxide fine desulfurizer and modified activated carbon desulfurizing agent all can the sweetening agent beds is contacted with low sulfur-containing gas.Preferably, the aspect ratio of the aspect ratio of iron oxide fine desulfurizer bed and modified activated carbon desulfurizing agent bed is respectively 3-6.The aspect ratio of the aspect ratio of iron oxide fine desulfurizer bed and modified activated carbon desulfurizing agent bed can be identical or different.
In above-mentioned method, preferably, through the hydrogen sulfide content in the Sweet natural gas of reactor A and reactor B, be less than 0.1ppmv, be less than separately 1ppmv through the organic sulfur content in the Sweet natural gas of reactor C and reactor D.
In above-mentioned method, the hydrogen sulfide (H in the low sulfur-containing gas of pending processing
2s) content is 90-210ppmv, and mercaptan (RSH) content is 5-60ppmv, and thioether (RSR) content is 4-25ppmv, and carbonylsulfide (COS) content is 1-6ppmv.In this low sulfur-containing gas, the content of other components is this area routine.Should low sulfur-containing gas can be the Sweet natural gas after the processing of employing wet desulfurizing process.
In desulfurizing process of the present invention, low sulfur-containing gas can upper entering and lower leaving pass through in-built reactor A and the reactor B that iron oxide fine desulfurizer is arranged successively, to remove hydrogen sulfide, makes hydrogen sulfide content be less than 0.1ppmv; Then upper entering and lower leaving is equipped with reactor C and the reactor D of modified activated carbon desulfurizing agent in passing through successively, to remove the organic sulfides such as mercaptan, thioether, carbonylsulfide, makes organic sulfide content be less than separately 1ppmv; The hydrogen sulfide content of the Sweet natural gas after the smart desulfurization finally obtained is less than 0.1ppmv, and organic sulfide content is less than 1ppmv separately, and, without obvious stink, total sulfur content reaches the industry standard requirement of GB17820-2012.
The constant temperature fine desulfurizing method of low sulfur-containing gas of the present invention has the following advantages: the operation of (1), alkali-free, and constant temperature fine desulfurizing method of the present invention does not need the participation of alkali, and alkali-free operation fully, thoroughly eliminated the pollution of salkali waste to environment; (2), oxygen free operation, constant temperature fine desulfurizing method of the present invention does not need the participation of oxygen, has simplified flow process, has reduced the investment of equipment; (3), constant temperature fine desulfurizing method of the present invention just can reach sweetening effectiveness preferably under normal pressure and temperature, inorganic and the organic sulfides such as the hydrogen sulfide in the low sulfur-containing gas of effective elimination, mercaptan, thioether, carbonylsulfide, and simple to operate, process cost is low, and energy consumption is low.
The accompanying drawing explanation
The schema of the constant temperature fine desulfurizing method of the low sulfur-containing gas that Fig. 1 is embodiment 1-5.
Embodiment
Understand for technical characterictic of the present invention, purpose and beneficial effect being had more clearly, now technical scheme of the present invention is carried out to following detailed description, but but can not be interpreted as the restriction to practical range of the present invention.
Embodiment 1
The present embodiment provides a kind of constant temperature fine desulfurizing method of low sulfur-containing gas, as shown in Figure 1, it comprises the following steps: make low sulfur-containing gas from top to bottom successively through in-built reactor A and the in-built reactor B that iron oxide fine desulfurizer is arranged that iron oxide fine desulfurizer is arranged, and then from top to bottom successively through in be equipped with the modified activated carbon desulfurizing agent reactor C and in the reactor D of modified activated carbon desulfurizing agent is housed, obtain the Sweet natural gas after smart desulfurization; Wherein, the temperature in reactor A and reactor B is respectively 20 ℃, and pressure is respectively 0.6MPa, and the gas air speed is respectively 100h
-1, the temperature in reactor C and reactor D is respectively 20 ℃, and pressure is respectively 0.6MPa, and the gas air speed is respectively 200h
-1; The aspect ratio of the iron oxide fine desulfurizer bed in reactor A and reactor B is 3.2, and the aspect ratio of the modified activated carbon desulfurizing agent bed in reactor C and reactor D is 3.2.
The gross weight of iron oxide fine desulfurizer of take is benchmark, and the chemical constitution of the iron oxide fine desulfurizer adopted comprises: Fe
2o
342%, ZnO2.4%, CuO0.6%, MnO15%, SiO
215% and CaO25%; The weight percent sum of each component equals 100%.The specification of the iron oxide fine desulfurizer adopted is Φ 3-5 * 5-15mm, intensity>=30N/cm, and specific surface area is 60-100m
2/ g, bulk density is 0.7-0.8g/mL, hydrogen sulfide penetrates Sulfur capacity>=15%.
The modified activated carbon desulfurizing agent adopted is for take gac as carrier, the modified activated carbon desulfurizing agent of load cupric nitrate load nickelous nitrate and manganous nitrate; Wherein, in the quality of metal oxide (CuO, NiO and MnO), the charge capacity of cupric nitrate, nickelous nitrate and manganous nitrate is respectively 8%, 5% and 9% of carrier quality.The specification of the modified activated carbon desulfurizing agent adopted is Φ 2-3mm, intensity>=60N/, specific surface area>150m
2/ g, bulk density is 0.6-0.7g/mL, organic sulfide penetrates Sulfur capacity>=10%.
In the present embodiment, the H in the low sulfur-containing gas of being processed
2s content is 150ppmv, and RSH content is 40ppmv, and RSR content is 10ppmv, and COS content is 3ppmv; H in Sweet natural gas after the smart desulfurization obtained
2s content is 0.03ppmv, and RSH content is 0.2ppmv, and RSR content is 0.6ppmv, and COS content is 0.4ppmv.
Embodiment 2
The present embodiment provides a kind of constant temperature fine desulfurizing method of low sulfur-containing gas, and the constant temperature fine desulfurizing method of the low sulfur-containing gas of itself and embodiment 1 is basic identical, and difference is: the temperature in reactor A and reactor B is respectively 25 ℃, and the gas air speed is respectively 60h
-1, the temperature in reactor C and reactor D is respectively 25 ℃, and the gas air speed is respectively 250h
-1.
In the present embodiment, the H in the low sulfur-containing gas of being processed
2s content is 200ppmv, and RSH content is 21ppmv, and RSR content is 5ppmv, and COS content is 3ppmv; H in Sweet natural gas after the smart desulfurization obtained
2s content is 0.03ppmv, and RSH content is 0.4ppmv, and RSR content is 0.6ppmv, and COS content is 0.3ppmv.
Embodiment 3
The present embodiment provides a kind of constant temperature fine desulfurizing method of low sulfur-containing gas, and the constant temperature fine desulfurizing method of the low sulfur-containing gas of itself and embodiment 1 is basic identical, and difference is: the temperature in reactor A and reactor B is respectively 25 ℃, and the gas air speed is 150h respectively
-1, the temperature in reactor C and reactor D is respectively 25 ℃, and the gas air speed is respectively 150h
-1.
In the present embodiment, the H in the low sulfur-containing gas of being processed
2s content is 100ppmv, and RSH content is 35ppmv, and RSR content is 5ppmv, and COS content is 1ppmv; H in Sweet natural gas after the smart desulfurization obtained
2s content is 0.01ppmv, and RSH content is 0.6ppmv, and RSR content is 0.2ppmv, and COS content is 0.1ppmv.
Embodiment 4
The present embodiment provides a kind of constant temperature fine desulfurizing method of low sulfur-containing gas, the constant temperature fine desulfurizing method of the low sulfur-containing gas of itself and embodiment 1 is basic identical, difference is: the pressure in reactor A and reactor B is respectively 1.0MPa, and the gas air speed is respectively 150h
-1, the pressure in reactor C and reactor D is respectively 1.0MPa, and the gas air speed is respectively 150h
-1.
In the present embodiment, the H in the low sulfur-containing gas of being processed
2s content is 180ppmv, and RSH content is 60ppmv, and RSR content is 10ppmv, and COS content is 1ppmv; H in Sweet natural gas after the smart desulfurization obtained
2s content is 0.04ppmv, and RSH content is 0.7ppmv, and RSR content is 0.5ppmv, and COS content is 0.2ppmv.
Embodiment 5
The present embodiment provides a kind of constant temperature fine desulfurizing method of low sulfur-containing gas, the constant temperature fine desulfurizing method of the low sulfur-containing gas of itself and embodiment 1 is basic identical, difference is: the temperature in reactor A and reactor B is respectively 25 ℃, and pressure is respectively 1.0MPa, and the gas air speed is respectively 100h
-1, the temperature in reactor C and reactor D is respectively 25 ℃, and pressure is respectively 1.0MPa, and the gas air speed is respectively 150h
-1.
In the present embodiment, the H in the low sulfur-containing gas of being processed
2s content is 180ppmv, and RSH content is 60ppmv, and RSR content is 20ppmv, and COS content is 1ppmv; H in Sweet natural gas after the smart desulfurization obtained
2s content is 0.03ppmv, and RSH content is 0.7ppmv, and RSR content is 0.4ppmv, and COS content is 0.2ppmv.
Claims (10)
1. the constant temperature fine desulfurizing method of a low sulfur-containing gas, it comprises the following steps: make low sulfur-containing gas and after iron oxide fine desulfurizer is contacted, then contacted with the modified activated carbon desulfurizing agent, obtain the Sweet natural gas after smart desulfurization.
2. method according to claim 1, it comprises the following steps: make low sulfur-containing gas successively through in-built reactor A and the in-built reactor B that iron oxide fine desulfurizer is arranged that iron oxide fine desulfurizer is arranged, and then successively through in be equipped with the modified activated carbon desulfurizing agent reactor C and in the reactor D of modified activated carbon desulfurizing agent is housed, obtain the Sweet natural gas after smart desulfurization.
3. method according to claim 2, wherein, the temperature in described reactor A and described reactor B is respectively 0-90 ℃, and pressure is respectively 0.1-4.0MPa, and the gas air speed is respectively 30-1000h
-1.
4. method according to claim 2, wherein, the temperature in described reactor C and described reactor D is respectively 0-90 ℃, and pressure is respectively 0.1-4.0MPa, and the gas air speed is respectively 30-1000h
-1.
5. method according to claim 1 and 2, wherein, the gross weight of described iron oxide fine desulfurizer of take is benchmark, its chemical constitution comprises: Fe
2o
320%-50%, ZnO0.1%-3%, CuO0.1%-1%, MnO0.1%-20%, SiO
25%-30% and CaO5%-30%, and the weight percent sum of each component equals 100%.
6. according to claim 1,2 or 5 described methods, wherein, the specification of described iron oxide fine desulfurizer is Φ 3-5 * 5-15mm, intensity>=30N/cm, and specific surface area is 60-100m
2/ g, bulk density is 0.7-0.8g/mL, hydrogen sulfide penetrates Sulfur capacity>=15%.
7. method according to claim 1 and 2, wherein, described modified activated carbon desulfurizing agent is for take gac as carrier, the modified activated carbon desulfurizing agent of one or both in load cupric nitrate load nickelous nitrate, manganous nitrate and zinc nitrate; Wherein, in the quality of cupric oxide, the 1-10% that the charge capacity of cupric nitrate is the carrier quality; In the quality of metal oxide, the 10-25% that the charge capacity of the total amount of one or both in nickelous nitrate, manganous nitrate and zinc nitrate is the carrier quality.
8. according to claim 1,2 or 7 described methods, wherein, the specification of described modified activated carbon desulfurizing agent is Φ 2-3mm, intensity>=60N/, specific surface area>150m
2/ g, bulk density is 0.6-0.7g/mL, organic sulfide penetrates Sulfur capacity>=10%.
9. according to the described method of any one in claim 1-2 and 5-8, wherein, the aspect ratio of the aspect ratio of iron oxide fine desulfurizer bed and modified activated carbon desulfurizing agent bed is respectively 3-6.
10. according to the described method of claim 2-9 any one, wherein, through the hydrogen sulfide content in the Sweet natural gas of reactor A and reactor B, be less than 0.1ppmv, through the organic sulfur content in the Sweet natural gas of reactor C and reactor D, be less than separately 1ppmv.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383807A (en) * | 2014-12-12 | 2015-03-04 | 重庆市荣冠科技有限公司 | Simple desulfurizing device |
| CN111892958A (en) * | 2020-08-04 | 2020-11-06 | 中国石油大学(北京) | Deep purification method and device for coke oven gas |
| CN112391210A (en) * | 2020-11-17 | 2021-02-23 | 滨州中科催化技术有限公司 | Coke oven gas purification system |
| CN116371392A (en) * | 2023-03-07 | 2023-07-04 | 中国科学院过程工程研究所 | Integrated desulfurization and decyanation catalyst and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0091392A1 (en) * | 1982-02-26 | 1983-10-12 | The Goodyear Tire & Rubber Company | Sulfur removal from a gas stream |
| CN101475859A (en) * | 2009-01-21 | 2009-07-08 | 东莞市康达机电工程有限公司 | Method and apparatus for preparing sulfur-free natural gas from methane |
| CN101954284A (en) * | 2010-09-25 | 2011-01-26 | 东华大学 | Active carbon desulfurization catalyst and preparation method thereof |
-
2013
- 2013-09-12 CN CN201310414044.4A patent/CN103468338B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0091392A1 (en) * | 1982-02-26 | 1983-10-12 | The Goodyear Tire & Rubber Company | Sulfur removal from a gas stream |
| CN101475859A (en) * | 2009-01-21 | 2009-07-08 | 东莞市康达机电工程有限公司 | Method and apparatus for preparing sulfur-free natural gas from methane |
| CN101954284A (en) * | 2010-09-25 | 2011-01-26 | 东华大学 | Active carbon desulfurization catalyst and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383807A (en) * | 2014-12-12 | 2015-03-04 | 重庆市荣冠科技有限公司 | Simple desulfurizing device |
| CN111892958A (en) * | 2020-08-04 | 2020-11-06 | 中国石油大学(北京) | Deep purification method and device for coke oven gas |
| CN111892958B (en) * | 2020-08-04 | 2021-09-28 | 中国石油大学(北京) | Deep purification method and device for coke oven gas |
| CN112391210A (en) * | 2020-11-17 | 2021-02-23 | 滨州中科催化技术有限公司 | Coke oven gas purification system |
| CN116371392A (en) * | 2023-03-07 | 2023-07-04 | 中国科学院过程工程研究所 | Integrated desulfurization and decyanation catalyst and preparation method and application thereof |
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