CN202338891U - Natural circulation waste heat boiler - Google Patents
Natural circulation waste heat boiler Download PDFInfo
- Publication number
- CN202338891U CN202338891U CN2011204307129U CN201120430712U CN202338891U CN 202338891 U CN202338891 U CN 202338891U CN 2011204307129 U CN2011204307129 U CN 2011204307129U CN 201120430712 U CN201120430712 U CN 201120430712U CN 202338891 U CN202338891 U CN 202338891U
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- China
- Prior art keywords
- rearmounted
- evaporimeter
- drum
- boiler
- collection case
- 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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- 230000004087 circulation Effects 0.000 title claims abstract description 31
- 239000002918 waste heat Substances 0.000 title claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 235000014171 carbonated beverage Nutrition 0.000 description 2
- 238000001833 catalytic reforming Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model discloses a natural circulation exhaust-heat boiler designs for solving current forced circulation exhaust-heat boiler's high power consumption, high investment and the fragile scheduling problem of equipment, is about to preceding, rearmounted evaporimeter export and passes through the tedge and connect the steam pocket, through preceding, rearmounted evaporimeter entry and steam pocket of downtake connection, forms water circulation system. The utility model discloses can be through the height between adjustment steam pocket and the rearmounted evaporimeter, adopt the natural circulation technique, the density difference between tedge and the downtake promotes the medium and flows at the inside circulation of entire system, does not need the force cycle pump as the power supply, and no power consumption, maintenance work is few, and adjustment mechanism is simple, hydrologic cycle safe and reliable, and the boiler tube cooling effect is good, can realize energy-conservation, practice thrift the investment, improves the purpose of the security of system. The technology has important significance for safe, long-period operation and stable operation of the boiler.
Description
Technical field
The utility model relates to reformer Natural Circulation waste heat boiler, belongs to the oil refining technical field of heating.
Background technology
The forced circulation technology is adopted in reformer four unification stove waste heat boiler waterpower circulations both at home and abroad at present usually, adopts the power of forced circulation water pump as the waterpower circulation, overcomes the on-way resistance and the local resistance that produce in the cyclic process.Operation principle sees accompanying drawing 1 for details: boiler feedwater at first gets into economizer 1, and the heating back gets into boiler-steam dome; Saturation water in the drum gets into forced circulation pump along down-comer, and the pressurization back gets into front-packed evaporator 4 inlet collection casees, the saturation water vaporization of in front-packed evaporator 4, being heated.Front-packed evaporator 4 outlet collection casees are connected with rearmounted evaporimeter 2 inlet collection casees, and steam water interface continues to get into rearmounted evaporimeter 2 heating, gets into drum from rearmounted evaporimeter 2 outlets then and carries out carbonated drink separation.Saturated vapor comes out to get into superheater 3 from drum, incorporates pipe network into after being superheated to the steam parameter of arts demand.Saturation water gets into next circulation along down-comer.
Adopting the characteristics of forced circulation system is that security of system is reliable, and the operating mode adaptive capacity is strong.Introduce forced circulation pump as power source, can improve the forced circulation pump lift and can solve the vapour locking that is prone in the cyclic process of boiler waterpower, distribute unequal situation.
The shortcoming of forced circulation: the one, power consumption adopts the forced circulation water pump as power source, must consumed energy; The 2nd, increase plant engineering investment and maintenance cost; The forced circulation pump pumped (conveying) medium is high temperature, high pressure, saturation state stove water, and condition of work is quite abominable, cavitation very easily occurs; The axle envelope of water pump also is easy to generate leakage, safeguards the workload that increase is very big for the maintenance repair of equipment.
Summary of the invention
The purpose of the utility model is to provide a kind of Natural Circulation waste heat boiler that is applicable to the oil plant reformer, and it can overcome the deficiency of existing waste heat boiler, solves problems such as forced circulation highly energy-consuming, with high investment and equipment be fragile.
The concrete technology contents of the utility model is following:
Economizer connects drum through feed pipe; Drum connects front-packed evaporator through down-comer, and front-packed evaporator is provided with inlet collection case, the front-packed evaporator tube bank that is obliquely installed and outlet collection case, and outlet collection case connects drum through tedge; Drum connects rearmounted evaporimeter through down-comer, and rearmounted evaporimeter is provided with inlet collection case, the rearmounted evaporimeter tube bank that is obliquely installed and outlet collection case, and outlet collection case connects drum through tedge; Drum connects superheater through steam pipe.
The evaporimeter boiler tube of the utility model changes header type into by traditional snakelike layout and arranges that promptly inlet porting collection case collects case with outlet on evaporimeter, and the parallel connection of tilting therebetween is provided with many grate furnaces pipe; The number of plies of boiler tube is confirmed according to heat exchange area; Medium arrives outlet collection case from inlet collection case through the boiler tube one way, and distance of flow reduces descends resistance, and boiler tube is in tilted layout and also can reduces the possibility of separation of two; Further reduce the system flow resistance, avoid the corrosion of boiler tube alternate stress.
The utility model adopts the Natural Circulation technology through the height between adjustment drum and the rearmounted evaporimeter, promotes medium with the density contrast between tedge and the down-comer and flows in the whole system inner loop; Do not need forced circulation pump as power source, unregulated power consumption, maintenance work is few; Governor motion is simple, and safe water circulation is reliable, the boiler tube good cooling results; Can realize energy-conservation, saving investment, improve the purpose of the security of system.This technology has great significance to safety, long-term operation and the stable operation of boiler.
Description of drawings
Fig. 1 is conventional reformer waste heat boiler boiler tube structural representation.
Fig. 2 is a reformer Natural Circulation waste heat boiler boiler tube structural representation.
The specific embodiment
Embodiment:
With reference to Fig. 2 the embodiment of the utility model is further specified:
The course of work and the implementation method of the utility model Natural Circulation waste heat boiler are following:
Economizer 1 connects drum 7 through feed pipe 8; Drum 7 connects front-packed evaporator 4 through down-comer 9, and front-packed evaporator 4 is provided with inlet collection case 4.1, the front-packed evaporator tube bank 4.3 that is obliquely installed and outlet collection case 4.2, and outlet collection case 4.2 connects drum 7 through tedge 5; Drum 7 connects rearmounted evaporimeter 2 through down-comer 10, and rearmounted evaporimeter 2 is provided with inlet collection case 2.1, the rearmounted evaporimeter tube bank 2.3 that is obliquely installed and outlet collection case 2.2, and outlet collection case 2.2 connects drum 7 through tedge 6; Drum 7 connects superheater 3 through steam pipe 11.
Boiler feedwater at first gets into economizer 1, is heated after feed pipe 8 gets into drum 7 as steaming moisturizing, and then, the saturation water in the drum 7 gets into front-packed evaporator 4 along down-comer 9, gets into rearmounted evaporimeter 2 along down-comer 10.The saturation water that gets into preposition steam vaporizer 4 at first gets into front-packed evaporator inlet collection case 4.1; Got into each layer tube bank (adopting diameter DN20-DN80 tube bank boiler tube) of the front-packed evaporator tube bank 4.3 that is obliquely installed by uniform distribution; In each steam-generating bank, be heated vaporization and be collected to evaporator outlet collection case 4.2 of saturation water; Get into drum 7 along tedge 5, form a circulatory system.Simultaneously; The saturation water that gets into rearmounted steam vaporizer 2 at first gets into rearmounted evaporator inlet collection case 2.1; Got into each layer tube bank (adopting diameter DN20-DN80 tube bank boiler tube) of the rearmounted evaporimeter tube bank 2.3 that is obliquely installed by uniform distribution; In each steam-generating bank, be heated vaporization and be collected to evaporator outlet collection case 2.2 of saturation water gets into drums 7 along tedge 6, forms a circulatory system.Drum 7 carries out after carbonated drink separates, and saturated vapor comes out to get into superheater 3 from drum 7, incorporates pipe network into after being superheated to the steam parameter of arts demand, and saturation water then gets into next circulation along down-comer.
The utility model can be saved the equipment investment of forced circulation water pump, the electricity charge of the operation of saving water pump and the regular maintenance expense of equipment.With 300,000 catalytic reformings is example, can practice thrift 300,000 yuan of the electricity charge every year, and 50,000 yuan of equipment maintenance cost conveniently have more meaning in energy-saving and emission-reduction simultaneously.
With 300,000 tons of/year catalytic reforming units is example, waste heat boiler important technological parameters such as following table:
| Economizer | Rearmounted evaporimeter | Superheater | Rearmounted evaporimeter | ||||
| The boiler tube diameter | ?φ32 | The boiler tube diameter | ?φ32 | The boiler tube diameter | ?φ32 | The boiler tube diameter | ?φ32 |
| The header diameter | ?φ168 | The header diameter | ?φ325 | The header diameter | ?φ168 | The header diameter | ?φ168 |
| Furnace tube material | ?20G | Furnace tube material | ?20G | Furnace tube material | ?P11 | Furnace tube material | ?20G |
| The horizontal direction angle | ?0 | The horizontal direction angle | ?25° | The horizontal direction angle | ?0 | The horizontal direction angle | ?30° |
| The tube bank number of plies | ?8 | The tube bank number of plies | ?6 | The tube bank number of plies | ?6 | The tube bank number of plies | ?6 |
| Economizer group number | 1 group | Rearmounted evaporator bank number | 2 groups | Superheater group number | 1 group | Rearmounted evaporator bank number | 1 group |
| The single tube |
10 meters | The single tube |
10 meters |
Claims (1)
1. Natural Circulation waste heat boiler is characterized in that: economizer (1) connects drum (7) through feed pipe (8); Drum (7) connects front-packed evaporator (4) through down-comer (9), and front-packed evaporator (4) is provided with inlet collection case (4.1), the front-packed evaporator tube bank (4.3) that is obliquely installed and outlet collection case (4.2), and outlet collection case (4.2) connects drum (7) through tedge (5); Drum (7) connects rearmounted evaporimeter (2) through down-comer (10), and rearmounted evaporimeter (2) is provided with inlet collection case (2.1), the rearmounted evaporimeter tube bank (2.3) that is obliquely installed and outlet collection case (2.2), and outlet collection case (2.2) connects drum (7) through tedge (6); Drum (7) connects superheater (3) through jet chimney (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204307129U CN202338891U (en) | 2011-11-03 | 2011-11-03 | Natural circulation waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204307129U CN202338891U (en) | 2011-11-03 | 2011-11-03 | Natural circulation waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202338891U true CN202338891U (en) | 2012-07-18 |
Family
ID=46487582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204307129U Expired - Fee Related CN202338891U (en) | 2011-11-03 | 2011-11-03 | Natural circulation waste heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202338891U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471075A (en) * | 2013-09-23 | 2013-12-25 | 中国瑞林工程技术有限公司 | Forced circulation and natural circulation combination waste heat boiler for copper refining furnace |
| CN104402843A (en) * | 2014-12-01 | 2015-03-11 | 中石化上海工程有限公司 | Method for reducing energy consumption of oxidation unit of epoxy propane device |
| CN105157012A (en) * | 2015-09-10 | 2015-12-16 | 常州大学 | Gas-fired boiler for overheating foreign steam |
| CN105805725A (en) * | 2016-05-06 | 2016-07-27 | 北京立化科技有限公司 | Trapezoidal superheater |
| CN107893987A (en) * | 2017-12-28 | 2018-04-10 | 西安富凯能源科技有限责任公司 | The hydrodynamic effective utilization system of natural circulation boiler |
-
2011
- 2011-11-03 CN CN2011204307129U patent/CN202338891U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471075A (en) * | 2013-09-23 | 2013-12-25 | 中国瑞林工程技术有限公司 | Forced circulation and natural circulation combination waste heat boiler for copper refining furnace |
| CN104402843A (en) * | 2014-12-01 | 2015-03-11 | 中石化上海工程有限公司 | Method for reducing energy consumption of oxidation unit of epoxy propane device |
| CN104402843B (en) * | 2014-12-01 | 2016-09-07 | 中石化上海工程有限公司 | The method reducing propylene oxide unit oxidation unit energy consumption |
| CN105157012A (en) * | 2015-09-10 | 2015-12-16 | 常州大学 | Gas-fired boiler for overheating foreign steam |
| CN105805725A (en) * | 2016-05-06 | 2016-07-27 | 北京立化科技有限公司 | Trapezoidal superheater |
| CN105805725B (en) * | 2016-05-06 | 2019-06-04 | 北京立化科技有限公司 | Trapezoidal superheater |
| CN107893987A (en) * | 2017-12-28 | 2018-04-10 | 西安富凯能源科技有限责任公司 | The hydrodynamic effective utilization system of natural circulation boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20201103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |