CN210088821U - Boiler economizer - Google Patents
Boiler economizer Download PDFInfo
- Publication number
- CN210088821U CN210088821U CN201920766200.6U CN201920766200U CN210088821U CN 210088821 U CN210088821 U CN 210088821U CN 201920766200 U CN201920766200 U CN 201920766200U CN 210088821 U CN210088821 U CN 210088821U
- Authority
- CN
- China
- Prior art keywords
- main part
- coiled pipe
- corrosion
- economizer
- polymer
- 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
Links
- 238000005260 corrosion Methods 0.000 claims abstract description 25
- 230000007797 corrosion Effects 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 7
- 239000010935 stainless steel Substances 0.000 claims abstract description 7
- 238000005299 abrasion Methods 0.000 claims description 5
- 238000009827 uniform distribution Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 abstract description 7
- 239000001301 oxygen Substances 0.000 abstract description 7
- 229920000592 inorganic polymer Polymers 0.000 abstract description 6
- 239000013522 chelant Substances 0.000 abstract description 3
- 229920000620 organic polymer Polymers 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 125000000123 silicon containing inorganic group Chemical group 0.000 abstract description 3
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 4
- 235000011149 sulphuric acid Nutrition 0.000 description 4
- 239000001117 sulphuric acid Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
The utility model relates to a boiler economizer, which comprises a main body; the left lower side of main part is equipped with liquid inlet, the upper left side of main part is equipped with the liquid outlet, liquid inlet with the staggered arrangement has the coiled pipe between the liquid outlet, coiled pipe fixedly connected with fin, the upside of main part is equipped with four pyramid's smoke inlet, the downside of main part is equipped with columniform outlet, the coiled pipe is stainless steel 316L material, the coiled pipe with evenly coat in the main part has the sour corrosion protection coating of heat conduction. The utility model discloses the coiled pipe adopts stainless steel 316L material, the coiled pipe with the even coating has heat conduction acid corrosion resistant coating in the main part to inorganic polymer is the interpenetrating network polymer who gives first place to as film forming material, and silicon-containing inorganic polymer is as the main chain in the solution, and high temperature grafting organic polymer modified resin obtains the inorganic-organic chelate polymer of multiblock grafting of alternate arrangement constitution, reduces oxygen corrosion and acid corrosion, improves economizer life.
Description
Technical Field
The utility model relates to a water heater technical field especially relates to a boiler economizer.
Background
The economizer is a device which is arranged at the lower part of a flue at the tail part of a boiler and used for recovering the waste heat of exhausted smoke, heats the water fed by the boiler into a heating surface of saturated water under the pressure of a steam drum, and is called as the economizer because the economizer absorbs the heat of high-temperature smoke, reduces the exhaust temperature of the smoke, saves energy and improves the efficiency.
The existing coal economizer is composed of a coil pipe, and the inner wall and the outer wall of the coil pipe can be corroded in the running process of the coal economizer due to the severe working environment. Among them, corrosion of the inner wall of the coil pipe is oxygen corrosion, also called oxygen-uptake corrosion. Namely, the boiler feed water still contains a certain amount of oxygen after being treated, the chemical property of the oxygen is very active, the oxygen can generate oxidation reaction with steel equipment, the oxidation reaction is accelerated due to a certain temperature in the boiler feed water, and a corrosion pit is formed on the inner wall of a pipe, so that the safety use of the economizer is endangered. The corrosion of coil pipe outer wall is acid corrosion mostly, because contain a large amount of sulfur dioxide in the flue gas, wherein, partly can turn into sulfur trioxide, and these sulfur trioxide can form sulphuric acid steam along with the vapor in the flue gas, when meetting microthermal economizer pipe, sulphuric acid steam in the flue gas can condense for sulphuric acid, and these sulphuric acid are attached to on the outer wall of economizer to cause the coil pipe outer wall acid corrosion of economizer, shorten the life of economizer.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art and providing a corrosion-resistant boiler economizer.
Realize the utility model discloses the technical scheme of purpose is: a boiler economizer has a main body; the left lower side of main part is equipped with liquid inlet, the upper left side of main part is equipped with the liquid outlet, liquid inlet with the staggered arrangement has the coiled pipe between the liquid outlet, coiled pipe fixedly connected with fin, the upside of main part is equipped with four pyramid's smoke inlet, the downside of main part is equipped with columniform outlet, the coiled pipe is stainless steel 316L material, the coiled pipe with evenly coat in the main part has the sour corrosion protection coating of heat conduction.
According to the technical scheme, the anti-abrasion layer is arranged inside the smoke inlet.
According to the technical scheme, the upper side of the smoke inlet is provided with the gas uniform distribution plate.
The heat-conducting acid-corrosion-resistant coating adopting the technical scheme is ZS 722.
According to the technical scheme, the fins are circular.
After the technical scheme is adopted, the utility model discloses following positive effect has:
the utility model discloses the coiled pipe adopts stainless steel 316L material, the coiled pipe with the even coating has heat conduction acid corrosion resistant coating in the main part, specifically be beijing zhi shengweihua chemical industry limited's zs-722, can regard inorganic polymer as the interpenetrating network polymer who gives first place to as film forming material, silicon-containing inorganic polymer is as the main chain in the solution, high temperature grafting organic polymer modified resin, obtain the inorganic-organic chelate polymer of multiblock grafting of alternate arrangement constitution, oxygen corrosion and acid corrosion are reduced, coal economizer life is improved, on the other hand has improved the boiler thermal efficiency, boiler feedwater temperature has been improved, the partial function of boiler water-cooling wall has been replaced, the configuration of water-cooling wall heating surface has been reduced, the cost of boiler has been reduced, the security of boiler operation has been improved.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic structural diagram of the present invention.
The device comprises a main body 1, a liquid inlet 2, a liquid outlet 3, a coiled pipe 4, fins 41, a smoke inlet 5, a smoke outlet 6, an anti-abrasion layer 7 and an air uniform distribution plate 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
(example 1)
Referring to fig. 1, the utility model has a boiler economizer, which comprises a main body 1; the left downside of main part 1 is equipped with liquid inlet 2, the upper left side of main part 1 is equipped with liquid outlet 3, liquid inlet 2 with the staggered arrangement has coiled pipe 4 between the liquid outlet 3, 4 fixedly connected with fins 41 of coiled pipe, the upside of main part 1 is equipped with four pyramid's smoke inlet 5, the downside of main part 1 is equipped with columniform outlet 6, coiled pipe 4 is the stainless steel 316L material, coiled pipe 4 with evenly the coating has heat conduction acid-proof corrosion coating on the main part 1.
An anti-abrasion layer 7 is arranged inside the smoke inlet 5.
And an air uniform distribution plate 8 is arranged on the upper side of the smoke inlet 5.
The heat-conducting acid-corrosion-resistant coating is ZS 722.
The fins 41 are circular.
The utility model discloses a theory of operation does: the utility model discloses coiled pipe 4 adopts the stainless steel 316L material, the even coating has heat conduction acid corrosion resistant coating on coiled pipe 4 and the main part 1, specifically be beijing zhi sheng weihua chemical industry limited's zs-722, can use the interpenetrating network polymer that inorganic polymer is the main as film forming material, silicon-containing inorganic polymer is as the main chain in the solution, high temperature grafting organic polymer modified resin, obtain the inorganic-organic chelate polymer of multiblock grafting that alternate arrangement constitutes, film forming property is good, adhesive force is good, the coating is smooth self-cleaning, the temperature resistance is high, it is compact to form the film. Reduce oxygen corrosion and acid corrosion and prolong the service life of the economizer. The flue gas passes through the gas uniform distribution plate 8 and the anti-abrasion layer 7 from the flue gas inlet 5 and is discharged from the flue gas outlet 6 downwards, the water is discharged from the liquid inlet 2 through the coiled pipe 4 upwards and then from the liquid outlet 3, and during the period, the heat in the flue gas is absorbed and exchanged by the water in the coiled pipe 4. The fins 41 enhance the heat exchange capability of the smoke in the descending process, and in addition, the fins 41 vibrate slightly under the action of the smoke, so that dust and impurities in the smoke are not easy to attach to the coiled pipe 4, and the corrosion of the coiled pipe 4 is reduced.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A boiler economizer has a main body (1); the method is characterized in that: the left lower side of main part (1) is equipped with liquid inlet (2), the upper left side of main part (1) is equipped with liquid outlet (3), liquid inlet (2) with zigzag pipe (4) have been arranged to the staggered arrangement between liquid outlet (3), zigzag pipe (4) fixedly connected with fin (41), the upside of main part (1) is equipped with four pyramid's inlet flue (5), the downside of main part (1) is equipped with columniform outlet flue (6), zigzag pipe (4) are the stainless steel 316L material, zigzag pipe (4) with evenly the coating has heat conduction acid-proof corrosion coating on main part (1).
2. The boiler economizer of claim 1 wherein: an anti-abrasion layer (7) is arranged inside the smoke inlet (5).
3. The boiler economizer of claim 1 wherein: and an air uniform distribution plate (8) is arranged on the upper side of the smoke inlet (5).
4. The boiler economizer of claim 1 wherein: the heat-conducting acid-corrosion-resistant coating is ZS 722.
5. The boiler economizer of claim 1 wherein: the fins (41) are circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920766200.6U CN210088821U (en) | 2019-05-24 | 2019-05-24 | Boiler economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920766200.6U CN210088821U (en) | 2019-05-24 | 2019-05-24 | Boiler economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210088821U true CN210088821U (en) | 2020-02-18 |
Family
ID=69480035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920766200.6U Expired - Fee Related CN210088821U (en) | 2019-05-24 | 2019-05-24 | Boiler economizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210088821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698810A (en) * | 2020-12-28 | 2021-11-26 | 惟精环境科技有限公司 | Protective coating material resistant to high-temperature flue gas corrosion and preparation method thereof |
-
2019
- 2019-05-24 CN CN201920766200.6U patent/CN210088821U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698810A (en) * | 2020-12-28 | 2021-11-26 | 惟精环境科技有限公司 | Protective coating material resistant to high-temperature flue gas corrosion and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200218 |