CN214009251U - Anticorrosive structure of desulfurization chimney steel inner tube - Google Patents
Anticorrosive structure of desulfurization chimney steel inner tube Download PDFInfo
- Publication number
- CN214009251U CN214009251U CN202022911265.0U CN202022911265U CN214009251U CN 214009251 U CN214009251 U CN 214009251U CN 202022911265 U CN202022911265 U CN 202022911265U CN 214009251 U CN214009251 U CN 214009251U
- Authority
- CN
- China
- Prior art keywords
- chimney
- layer
- inside wall
- inner tube
- anticorrosive
- 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 - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 21
- 239000010959 steel Substances 0.000 title claims abstract description 21
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 17
- 230000023556 desulfurization Effects 0.000 title claims abstract description 17
- 239000010410 layer Substances 0.000 claims abstract description 51
- 229920002635 polyurethane Polymers 0.000 claims abstract description 17
- 239000004814 polyurethane Substances 0.000 claims abstract description 17
- 239000011247 coating layer Substances 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 238000004321 preservation Methods 0.000 claims abstract description 10
- 239000004593 Epoxy Substances 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims abstract description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000005011 phenolic resin Substances 0.000 claims abstract description 5
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 15
- 239000003973 paint Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 5
- 239000011152 fibreglass Substances 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 8
- 239000010935 stainless steel Substances 0.000 abstract description 8
- 239000004922 lacquer Substances 0.000 abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 11
- 239000003546 flue gas Substances 0.000 description 11
- 239000002253 acid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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- Chimneys And Flues (AREA)
Abstract
The utility model discloses a desulfurization chimney steel inner tube anticorrosion structure, including the chimney urceolus, the mounting is installed to the inside wall of chimney urceolus is inlayed, and mounting quantity just is the annular array and arranges and install in the inside wall of chimney urceolus for four groups, and the mounting is located the outside lateral wall welding of chimney urceolus inside wall and installs the chimney inner tube, and the chimney inner tube comprises seal, insulating layer, heat preservation, anticorrosive coating and anticorrosive coating layer, and the seal is outmost, and the insulating layer is installed in the inner ring inside wall welding of seal. This anticorrosive structure of desulfurization chimney steel inner tube replaces traditional stainless steel to carry out anticorrosive through setting up the anticorrosive coating, the cost of practicing thrift to a certain extent, and the application of anticorrosive dope layer also makes the corrosion resisting property of chimney inner tube better simultaneously, and the anticorrosive time is longer, has improved the adaptability of device greatly, and the cost of epoxy ceramic, phenolic resin lacquer and polyurethane lacquer is also all not high for the suitability of device adds extensively.
Description
Technical Field
The utility model relates to an anticorrosive technical field of inner tube especially relates to a desulfurization chimney steel inner tube anticorrosion structure.
Background
In the prior art, the flue gas in the chimney after wet desulphurization has the following characteristics: (1) the moisture content in the smoke is high, and the humidity of the smoke is very high; (2) the flue gas temperature is low, generally about 80 ℃, and if a flue gas heat exchanger is not arranged, the flue gas temperature is only 45 ℃; (3) the flue gas contains strong corrosive substances such as chloride, fluoride, sulfurous acid and the like, and has strong corrosivity on the chimney; (4) the flue gas has low sulfuric acid concentration, and the generated low-concentration acid solution has stronger corrosivity to the inner cylinder of the chimney than the high-concentration acid solution. When the low-concentration acid liquor is at 40-80 ℃, smoke is easy to fog on the inner wall of the chimney to form acid liquor with strong corrosivity, and the corrosion speed of the acid liquor on a structural material is several times higher than that of the acid liquor at other temperatures. The corrosivity of the flue gas after wet desulphurization does not decrease and increases reversely, and the corrosivity of the flue gas to a chimney is extremely serious. In engineering, the corrosion-resistant structure of the steel inner cylinder made of stainless steel is adopted. However, the stainless steel material is expensive, the consumption is greatly influenced by the cost, and the stainless steel needs to be replaced after being corroded for a long time, so that the cost is too high, and therefore, the steel inner cylinder anticorrosion structure for the desulfurization chimney is provided.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a desulfurization chimney steel inner tube anticorrosion structure has solved the flue gas corrosivity after the wet flue gas desulfurization and has not fallen and rise conversely, and the flue gas is extremely serious to the corrosivity of chimney. In the engineering, can adopt stainless steel's steel inner tube's corrosion-resistant structure, however, because stainless steel material is high, the quantity receives the cost influence great, and the corrosion condition also can appear for a long time in stainless steel, just need change, the too high problem of cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a desulfurization chimney steel inner tube anticorrosion structure, including the chimney urceolus, the mounting is installed to the inside wall of chimney urceolus is inlayed, mounting quantity is four groups and is the annular array range and installs in the inside wall of chimney urceolus, the mounting is located the outside lateral wall welded mounting of chimney urceolus inside wall and installs the chimney inner tube, the chimney inner tube is by the seal, the insulating layer, the heat preservation, anticorrosive coating and anticorrosive coating layer constitute, the seal is outmost, the inner ring inside wall welded mounting of seal has the insulating layer, the inner ring inside wall welded mounting of insulating layer has the heat preservation, the inner ring inside wall welded mounting of heat preservation has the anticorrosive coating, the inner ring inside wall spraying of anticorrosive coating has anticorrosive coating layer.
Preferably, the main material of the sealing layer is glass fiber reinforced plastic, and the thickness of the sealing layer is 2 cm.
Preferably, the main material of insulating layer is glass fiber, and the thickness of insulating layer is 3 cm.
Preferably, the main material of heat preservation is polyurethane heated board, and the thickness of heat preservation is 3 cm.
Preferably, the main material of anticorrosive coating is epoxy ceramic, and the thickness of anticorrosive coating is 2 cm.
Preferably, the anticorrosive coating layer consists of phenolic resin paint and polyurethane paint, the polyurethane paint is the outermost layer, and the thickness of the anticorrosive coating layer is 5 mm.
Compared with the prior art, the beneficial effects of the utility model are that: this anticorrosive structure of desulfurization chimney steel inner tube replaces traditional stainless steel to carry out anticorrosive through setting up the anticorrosive coating, the cost of practicing thrift to a certain extent, and the application of anticorrosive dope layer also makes the corrosion resisting property of chimney inner tube better simultaneously, and the anticorrosive time is longer, has improved the adaptability of device greatly, and the cost of epoxy ceramic, phenolic resin lacquer and polyurethane lacquer is also all not high for the suitability of device adds extensively.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the structure of the inner cylinder of the chimney.
In the figure: the chimney comprises a chimney outer cylinder 1, a fixing part 2, a chimney inner cylinder 3, a sealing layer 4, a heat insulation layer 5, a heat preservation layer 6, an anticorrosive layer 7 and an anticorrosive coating layer 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a desulfurization chimney steel inner cylinder anticorrosion structure comprises a chimney outer cylinder 1, fixing pieces 2 are embedded and installed on the inner side wall of the chimney outer cylinder 1, the fixing pieces 2 are four groups and are arranged on the inner side wall of the chimney outer cylinder 1 in an annular array mode, the fixing pieces 2 are located on one side wall outside the inner side wall of the chimney outer cylinder 1 and are installed on a chimney inner cylinder 3 in a welding mode, the chimney inner cylinder 3 is composed of a sealing layer 4, a heat insulation layer 5, a heat insulation layer 6, an anticorrosion layer 7 and an anticorrosion coating layer 8, the sealing layer 4 is the outermost layer, the sealing layer 4 is mainly made of glass steel, the thickness of the sealing layer 4 is 2cm, the glass steel is Fiber Reinforced Plastic (FRP), namely fiber reinforced composite plastic (FRP), the glass steel is low in strength and modulus relative to fibers, can bear large strain, and often has viscoelasticity and plasticity and toughness, the heat insulation layer 5 is installed on the inner side wall of the sealing layer 4 in a welding mode, the main material of the heat insulation layer 5 is glass fiber, the thickness of the heat insulation layer 5 is 3cm, the glass fiber is an inorganic non-metallic material with excellent performance, the variety is wide, the advantages are that the insulation performance is good, the heat resistance is strong, the corrosion resistance is good, the mechanical strength is high, when the glass fiber is used as a reinforcing material of reinforced plastics, the biggest characteristic is that the tensile strength is large, the tensile strength is 6.3-6.9 g/d under a standard state, the wet state is 5.4-5.8 g/d, and the density is 2.54g/cm 3. The heat resistance is good, the strength is not affected when the temperature reaches 300 ℃, the electric insulation is good, the electric insulation is a high-grade electric insulation material, the electric insulation material is also used for heat insulation materials and fireproof shielding materials, and is generally only corroded by concentrated alkali, hydrofluoric acid and concentrated phosphoric acid, the inner side wall of the inner ring of the heat insulation layer 5 is welded and provided with the heat insulation layer 6, the main material of the heat insulation layer 6 is a polyurethane heat insulation board, the thickness of the heat insulation layer 6 is 3cm, the heat conductivity coefficient of rigid polyurethane is low, the thermal property is good, the rigid polyurethane has moisture resistance and waterproof property, the rigid polyurethane is fireproof, flame retardant and high temperature resistant, the thickness of an outer enclosure structure of a building can be reduced under the condition of reaching the same heat insulation requirement, so that the indoor use area is increased, the rigid polyurethane has strong deformation resistance, is not easy to crack, the facing is stable and safe, the porosity, the heat-insulating layer has excellent heat-insulating property, freeze thawing resistance and sound absorption resistance, an anticorrosive layer 7 is welded on the inner side wall of an inner ring of a heat-insulating layer 6, the anticorrosive layer 7 is mainly made of epoxy ceramic, the thickness of the anticorrosive layer 7 is 2cm, the epoxy ceramic coating has high hardness, is smooth and wear-resistant, has certain toughness, is a lining material with high mechanical strength, large cohesive force and excellent anticorrosive property, the epoxy ceramic has a solvent-free type and a thick paste type, can be coated thickly at one time, can be dried by air at normal temperature, is compact and tough, has a smooth and tough appearance like a mirror, is wear-resistant, water-resistant, chemical medium-resistant and excellent in electrical insulation, can reduce cost and improve quality, and is convenient to use, the anticorrosive coating layer 8 is sprayed on the inner side wall of the inner ring of the anticorrosive layer 7, the anticorrosive coating layer 8 is composed of phenolic resin paint and polyurethane paint, the polyurethane paint is the outermost layer, the thickness of the anticorrosive coating layer 8 is 5mm, the polyurethane paint has the characteristics of quick drying, high hardness, water resistance and chemical corrosion resistance, and the polyurethane paint is tough, bright and plump in paint film, strong in adhesive force, water-resistant, wear-resistant and corrosion-resistant.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a desulfurization chimney steel inner tube anticorrosion structure, including chimney urceolus (1), a serial communication port, the inside wall of chimney urceolus (1) is inlayed and is installed mounting (2), mounting (2) quantity is four groups and is the inside wall that the annular array arranged installed in chimney urceolus (1), mounting (2) are located outside a lateral wall welded mounting chimney inner tube (3) of chimney urceolus (1) inside wall, chimney inner tube (3) are by seal (4), insulating layer (5), heat preservation (6), anticorrosive coating (7) and anticorrosive coating layer (8) constitute, seal (4) are outermost, the welding of the inner ring inside wall of seal (4) installs insulating layer (5), the welding of the inner ring inside wall of insulating layer (5) installs heat preservation (6), the welding of the inner ring inside wall of heat preservation (6) installs anticorrosive coating (7), and an anticorrosive coating layer (8) is sprayed on the inner side wall of the inner ring of the anticorrosive coating (7).
2. The steel inner cylinder anticorrosion structure for the desulfurization chimney according to claim 1, wherein the main material of the sealing layer (4) is glass fiber reinforced plastic, and the thickness of the sealing layer (4) is 2 cm.
3. The steel inner cylinder anticorrosion structure for the desulfurization chimney according to claim 1, wherein the main material of the thermal insulation layer (5) is glass fiber, and the thickness of the thermal insulation layer (5) is 3 cm.
4. The steel inner cylinder anticorrosion structure for the desulfurization chimney according to claim 1, wherein the main material of the heat insulation layer (6) is a polyurethane heat insulation plate, and the thickness of the heat insulation layer (6) is 3 cm.
5. The steel inner cylinder anticorrosion structure for the desulfurization chimney according to claim 1, wherein the main material of the anticorrosion layer (7) is epoxy ceramic, and the thickness of the anticorrosion layer (7) is 2 cm.
6. The steel inner cylinder anticorrosion structure for the desulfurization chimney according to claim 1, wherein the anticorrosion coating layer (8) is composed of phenolic resin paint and polyurethane paint, the polyurethane paint is the outermost layer, and the thickness of the anticorrosion coating layer (8) is 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022911265.0U CN214009251U (en) | 2020-12-08 | 2020-12-08 | Anticorrosive structure of desulfurization chimney steel inner tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022911265.0U CN214009251U (en) | 2020-12-08 | 2020-12-08 | Anticorrosive structure of desulfurization chimney steel inner tube |
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| Publication Number | Publication Date |
|---|---|
| CN214009251U true CN214009251U (en) | 2021-08-20 |
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| CN202022911265.0U Expired - Fee Related CN214009251U (en) | 2020-12-08 | 2020-12-08 | Anticorrosive structure of desulfurization chimney steel inner tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435332A (en) * | 2022-09-21 | 2022-12-06 | 江苏金盛建设集团有限公司 | Anticorrosion structure of desulfurization chimney steel inner tube based on anticorrosion engineering |
-
2020
- 2020-12-08 CN CN202022911265.0U patent/CN214009251U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435332A (en) * | 2022-09-21 | 2022-12-06 | 江苏金盛建设集团有限公司 | Anticorrosion structure of desulfurization chimney steel inner tube based on anticorrosion engineering |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210820 |