CN203363439U - Conveying pipeline for liquid sulfur - Google Patents
Conveying pipeline for liquid sulfur Download PDFInfo
- Publication number
- CN203363439U CN203363439U CN 201320347833 CN201320347833U CN203363439U CN 203363439 U CN203363439 U CN 203363439U CN 201320347833 CN201320347833 CN 201320347833 CN 201320347833 U CN201320347833 U CN 201320347833U CN 203363439 U CN203363439 U CN 203363439U
- Authority
- CN
- China
- Prior art keywords
- liquid sulfur
- resin layer
- glass fiber
- fiber reinforced
- reinforced plastic
- 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.)
- Expired - Lifetime
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Abstract
The utility model provides a conveying pipeline for liquid sulfur. The conveying pipeline for the liquid sulfur comprises a glass fiber reinforced plastic liner, wherein the glass fiber reinforced plastic liner is sleeved with a polypropylene resin layer, and an outer carbon steel pipe is arranged outside the polypropylene resin layer. The glass fiber reinforced plastic liner has good mechanical properties and corrosion resistance and can withstand the friction force generated when the liquid sulfur flows and the corrosivity of the liquid sulfur, even the glass fiber reinforced plastic liner peels off and forms penetrating holes, the polypropylene resin layer sleeved with the glass fiber reinforced plastic liner can also effectively prevent the liquid sulfur from further corroding the pipeline, and the outer carbon steel pipe arranged on the outermost layer can further effectively protect the pipeline against damage of external force as well as playing the role of a support. The conveying pipeline for the liquid sulfur is simple in structure, easy to manufacture and capable of being used for a long time, and thus enterprises cannot encounter shutdown due to the damage of the pipeline.
Description
Technical field
The utility model relates to the gas washing in SA production field, refers to especially a kind of Molten sulphur conveying pipe.
Background technique
Molten sulphur has a small amount of H in handling and storage process
2s gas is run out of, and causes environmental pollution.H
2s gas has obvious corrosive action to iron:
(1) microstructure
Counter stress corrosion cracking receptance raises by following order:
Spheroidized carbide tissue in ferrite → fully quench and tempered structure → normalizing and tempering tissue → normalizing after tissue → quenching untempered martensitic structure afterwards.
(2) intensity and hardness
With the rising of yield strength, the ratio of critical stress and yield strength descends, and Sensitivity of Stress Corrosion increases.
The raising of material hardness, to the receptance raising of sulphide stress corrosion.
(3) alloying element and heat treatment
Carbon (C): the receptance that can improve the stress-corrosion cracking of steel in sulphide.
Nickel (Ni): the resistivity that can reduce its counter stress corrosion cracking in sulfide hydrogen solution.
Chromium (Cr): it is generally acknowledged the steel used in sulfide hydrogen solution, containing chromium 0.5%～13%, feasible, because they can obtain stable tissue after heat treatment.
Manganese (Mn): manganese element is a kind of element of easy segregation, and research manganese is very important in the effect of sulfide corrosion cracking process.Once reach certain proportion, in steel production and equipment welding process, produce the microstructure of martensite/bainite high-strength degree, low toughness when line of segragation Mn, C content, show very high hardness, to the anti-H of equipment
2s is disadvantageous.
(4) cold working
The cold deformation of through cold rolling, cold forging, clod wash or other manufacturing process and machinery, biting etc. and to produce, not only make the hardness in cold deformation district increase, but also produce a very large residual stress, sometimes can be up to the yield strength of steel, thus cause H
2the S sensitivity.Steel are along with the increase of cold working amount in general, and hardness increases, H
2the receptance of S strengthens.
The model utility content
For addressing the above problem, the utility model provides a kind of Molten sulphur conveying pipe.
Concrete solution is: a kind of Molten sulphur conveying pipe, comprise frp lining, and the outer sheathed acrylic resin layer of frp lining, the acrylic resin layer is outside equipped with the carbon steel outer tube.
Further, described acrylic resin layer is coated in the frp lining outside, and carbon steel outer tube hot charging is in the acrylic resin layer outside.
Frp lining has good mechanical characteristic and anti-corrosion capacity; can bear frictional force and its corrosivity of producing when Molten sulphur flows; even frp lining peels off and forms perforation; being set in its outer acrylic resin layer also can stop Molten sulphur further to be corroded pipeline effectively; be arranged on outermost carbon steel outer tube except the effect of playing support, can also effectively protect pipeline not to be subject to outside destroy.
The utility model is simple in structure, is easy to make, and can uses for a long time, and enterprise can not stop work because of Pipeline damage.
The accompanying drawing explanation
Fig. 1 is scheme of installation of the present utility model.
1. frp lining 2. acrylic resin layer 3. carbon steel outer tube
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.
As shown in Figure 1, a kind of Molten sulphur conveying pipe, comprise frp lining 1, the outer sheathed acrylic resin layer 2 of frp lining 1, acrylic resin layer 2 is outside equipped with carbon steel outer tube 3, described acrylic resin layer 2 is coated in frp lining 1 outside, and carbon steel outer tube 3 hot chargings are in acrylic resin layer 2 outside.
Frp lining 1 has good mechanical characteristic and anti-corrosion capacity; can bear frictional force and its corrosivity of producing when Molten sulphur flows; even frp lining 1 peels off and forms perforation; being set in its outer acrylic resin layer 2 also can stop Molten sulphur further to be corroded pipeline effectively; be arranged on outermost carbon steel outer tube 3 except the effect of playing support, can also effectively protect pipeline not to be subject to outside destroy.
The utility model is simple in structure, is easy to make, and can uses for a long time, and enterprise can not stop work because of Pipeline damage.
Claims (2)
1. a Molten sulphur conveying pipe is characterized in that: comprise frp lining, and the outer sheathed acrylic resin layer of frp lining, the acrylic resin layer is outside equipped with the carbon steel outer tube.
2. a kind of Molten sulphur conveying pipe according to claim 1 is characterized in that: described acrylic resin layer is coated in the frp lining outside, and carbon steel outer tube hot charging is in the acrylic resin layer outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320347833 CN203363439U (en) | 2013-06-18 | 2013-06-18 | Conveying pipeline for liquid sulfur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320347833 CN203363439U (en) | 2013-06-18 | 2013-06-18 | Conveying pipeline for liquid sulfur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203363439U true CN203363439U (en) | 2013-12-25 |
Family
ID=49811200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320347833 Expired - Lifetime CN203363439U (en) | 2013-06-18 | 2013-06-18 | Conveying pipeline for liquid sulfur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203363439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482975A (en) * | 2014-12-22 | 2015-04-01 | 常熟市董浜镇徐市盛峰液压配件厂 | High-precision flow meter |
-
2013
- 2013-06-18 CN CN 201320347833 patent/CN203363439U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482975A (en) * | 2014-12-22 | 2015-04-01 | 常熟市董浜镇徐市盛峰液压配件厂 | High-precision flow meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |