CN201652407U - Air preheater - Google Patents
Air preheater Download PDFInfo
- Publication number
- CN201652407U CN201652407U CN2010201509529U CN201020150952U CN201652407U CN 201652407 U CN201652407 U CN 201652407U CN 2010201509529 U CN2010201509529 U CN 2010201509529U CN 201020150952 U CN201020150952 U CN 201020150952U CN 201652407 U CN201652407 U CN 201652407U
- Authority
- CN
- China
- Prior art keywords
- air preheater
- flue gas
- bobbin carriage
- pipe
- cleaning
- 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
Links
- 238000004140 cleaning Methods 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000779 smoke Substances 0.000 claims abstract description 18
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 239000010935 stainless steel Substances 0.000 claims abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 49
- 239000003546 flue gas Substances 0.000 claims description 49
- 239000000428 dust Substances 0.000 claims description 18
- 238000013517 stratification Methods 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 16
- 238000005504 petroleum refining Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 239000004071 soot Substances 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 206010000234 Abortion spontaneous Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 208000015994 miscarriage Diseases 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000032696 parturition Effects 0.000 description 2
- 208000000995 spontaneous abortion Diseases 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- CFVBFMMHFBHNPZ-UHFFFAOYSA-N [Na].[V] Chemical compound [Na].[V] CFVBFMMHFBHNPZ-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Air Supply (AREA)
Abstract
The utility model discloses an air preheater, which aims at solving the problems of incapability of in-time cleaning and inconvenient cleaning during cleaning of the existing air preheater by adopting high-pressure water jet flow cleaning technology. The air preheater of the utility model is provided with a high-pressure jet flow cleaner, wherein a jet flow spray nozzle (42) of the high-pressure water jet flow cleaner is arranged at the side part of a smoke gas pipe box (21) of the air preheater, the bottom of the smoke gas pipe box (21) is provided with a pollution discharge pipe (8), a pollution discharge valve (81) is arranged on the pollution discharge pipe (8), and a stainless steel inner liner (24) is arranged on the inner surface of the smoke gas pipe box (21). The utility model is mainly used for pipe type heating furnaces in petroleum refining, petrochemical engineering and coal chemical engineering industries, and carries out the on-line operation of the high-pressure water jet flow cleaning of the air preheater under the condition that the operation of the pipe type heating furnace is not stopped.
Description
Technical field
The utility model relates to the used a kind of air preheater of tubular heater of petroleum refining, petrochemical industry and Coal Chemical Industry industry.
Background technology
Tubular heater is the big power consumer of petroleum refining and petroleum chemical industry process units; Improve the thermal efficiency, the minimizing Fuel Consumption of tubular heater, " energy-saving and emission-reduction " task has great significance for reducing production costs, increase economic efficiency and finishing.Tubular heater uses air preheater to utilize fume afterheat, to reduce smog discharge temperature, is an important technique measure that improves the tubular heater thermal efficiency.But the smog discharge temperature of air preheater the dust stratification blockage problem can occur at the flue gas bobbin carriage after reducing; This is to influence the biggest obstacle that the tubular heater thermal efficiency improves.Dust stratification stops up the heat transfer efficiency that not only can reduce air preheater, also can make the resistance increase of flow of flue gas, the power consumption of increase blower fan; Also threaten the normal operation of tubular heater when serious.The industrial soot blower (as steam sootblower, acoustic wave ash ejector and shock-wave ash blowing device etc.) of normally installing on air preheater is removed dust stratification.But because the main fuel of petroleum refining and petrochemical industry tubular heater is heavy fuels such as heavy oil, decompression residuum, metal ions such as V, Na contained in the fuel form low-melting V in combustion process
2O
5, Na
2Compounds such as O; Work as V
2O
5, Na
2During the O coexistence, form the lower vanadium sodium compound of fusing point.These low-melting compound viscosity are high, in the process with flow of flue gas, stick to randomly on the outer wall of heat-transfer pipe in the air preheater flue gas bobbin carriage easily, form dirty source point; The dirt source point adheres to other ash content again and forms the dirt layer.These dirt layers purge by various soot blowers, and field practice has also proved this point.
At present, The Technolgy of High Pressure Water jet Cleaning has certain application in the cleaning of air preheater." cleaning of air preheater and mediation " literary composition of delivering of 2000 the 7th phases of " energy-conservation " magazine, " high Pressure Water Jet Flow Cleaning Air preheater " literary composition that 1998 the 4th phases of " Sichuan power technology " magazine deliver, introduce the principle of The Technolgy of High Pressure Water jet Cleaning, and introduced several examples that clean steam power plant's air preheater.High-pressure water jet is to utilize mechanical booster system (water jet cleaning machine) that the water of low pressure and mass flow is transformed into the water of high-pressure low-flow, carries through pressure duct, is discharged by nozzle, produces " energy beam ".Should " energy beam " have the characteristic (so being referred to as high-speed water jet again) of high flow rate (200～450 meter per second), low discharge, one or more materials are broken away from from another kind of material surface.Be applied on the air preheater, can produce the dirt layer and peel off and broken effect from steel pipe.The Technolgy of High Pressure Water jet Cleaning is used for the cleaning of petroleum refining and petroleum chemical industry tubular heater device air preheater, can remove on the outer wall of heat-transfer pipe the dirt that can not purge with existing various soot blowers institute layer.But when existing air preheater adopts this technology, can only during the tubular heater shut-down (breakdown) mainteance, just can clean; And at this moment in the air preheater flue gas bobbin carriage dust stratification on the heat-transfer pipe outer wall (comprising the dirt layer) quite serious because air preheater (4 months at most, 2 months at least) in very short running time promptly can form a large amount of dust stratifications.Air preheater will move under bad state in considerable time, can not satisfy the requirement of efficient operation always.In addition, when existing air preheater adopts The Technolgy of High Pressure Water jet Cleaning to clean, need open housing and clean, very inconvenient.
Summary of the invention
The purpose of this utility model provides a kind of air preheater, the existing problem that can not in time clean, clean inconvenience when adopting The Technolgy of High Pressure Water jet Cleaning to clean to solve existing air preheater.
For addressing the above problem, the technical solution adopted in the utility model is: a kind of air preheater, be provided with the flue gas bobbin carriage, the smoke inlet pipe, gas bypass pipe and dust stratification scavenge unit, be provided with heat-transfer pipe in the flue gas bobbin carriage, be provided with smoke inlet pipe butterfly valve in the smoke inlet pipe, be provided with gas bypass pipe butterfly valve in the gas bypass pipe, it is characterized in that: described dust stratification scavenge unit is a high pressure water jet cleaning device, the jet nozzle of high pressure water jet cleaning device is located at the sidepiece of flue gas bobbin carriage, the bottom of flue gas bobbin carriage is provided with blow-off pipe, blow-off pipe is provided with blowoff valve, and the inner surface of flue gas bobbin carriage is provided with stainless steel inner lining.
Adopt the utility model, have following beneficial effect: at air preheater after operation a period of time, when dust stratification, needs cleaning appear in the outer wall of heat-transfer pipe in detecting the flue gas bobbin carriage, with smoke inlet pipe butterfly valve close, gas bypass pipe butterfly valve opens; The flue gas that tubular heater produces is directly drained, is no longer entered in the flue gas bobbin carriage through the gas bypass pipe.Starting high pressure water jet cleaning device afterwards cleans.The jet nozzle high velocity jet goes out High-Pressure Water, has high energy and energy height and concentrates, and dust stratification is produced very big washing away and effect such as grinding; Can wash the dust stratification of heat-transfer pipe outer wall, comprise the dirt layer that can not purge, dirt layer is smashed, come off with existing various soot blowers institute.Above-mentioned Cleaning by High Pressure Water Jet operation can be carried out at any time at the tubular heater normal operation period, avoids the heat-transfer pipe outer wall phenomenon of serious dust stratification to occur, and air preheater can efficiently be moved under good state always.When cleaning, the housing that does not need to open air preheater cleans, and is very convenient in addition.The inner surface of flue gas bobbin carriage is provided with stainless steel inner lining, can prevent from that high-voltage high-speed rinse water miscarriage from giving birth to wash away infringement, and clean the sewage that produces and the corrosion of black dirt.After cleaning operation was finished, smoke inlet pipe butterfly valve was opened, gas bypass pipe butterfly valve cuts out, and the flue gas that tubular heater produces enters in the flue gas bobbin carriage, and air preheater promptly begins normal heat exchange operation.
The utility model air preheater has been realized the on-line operation of Cleaning by High Pressure Water Jet, and tubular heater needn't be stopped work and can be carried out.The cleaning cost is low, quality is high, speed is fast, in the tubular heater device of petroleum refining and petroleum chemical industry good prospects for application is arranged.The tubular heater of Coal Chemical Industry industry also can adopt the utility model.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.The drawings and specific embodiments do not limit the claimed scope of the utility model.
Description of drawings
Fig. 1 is the schematic diagram of the utility model air preheater.
Fig. 2 is the A-A cutaway view (amplification) among Fig. 1.
Among Fig. 1 to Fig. 2, same reference numerals is represented identical technical characterictic.
The specific embodiment
Referring to Fig. 1, shown air preheater is a kind of heat pipe preheater (being designated hereinafter simply as air preheater), is provided with flue gas bobbin carriage 21, smoke inlet pipe 3, gas bypass pipe 1, air bobbin carriage 22, also is provided with the dust stratification scavenge unit.Be dividing plate 23 between flue gas bobbin carriage 21 and the air bobbin carriage 22, smoke inlet pipe 3 links to each other with flue gas bobbin carriage 21.Be provided with heat-transfer pipe in flue gas bobbin carriage 21 and the air bobbin carriage 22, heat-transfer pipe is a heat pipe.One end of gas bypass pipe 1 links to each other with smoke inlet pipe 3, and the other end links to each other with chimney 10.Be provided with smoke inlet pipe butterfly valve 31 in the smoke inlet pipe 3, be provided with gas bypass pipe butterfly valve 11 in the gas bypass pipe 1.Among Fig. 1, hollow arrow is represented the flow direction of air, and filled arrows is represented the flow direction of flue gas.
The dust stratification scavenge unit is a high pressure water jet cleaning device.Shown in high pressure water jet cleaning device be provided with water tank 7, high-pressure hydraulic pump 6, concetrated pipe 5, arm 4, jet nozzle 42.Wherein arm 4 vertically is provided with many, and shown in Figure 1 is 3.Every arm 4 is provided with a plurality of described jet nozzles 42 (shown in Figure 1 is 3), also is provided with magnetic valve or electrical ball valve 41.Each magnetic valve or electrical ball valve 41 link to each other with controller 9 by lead; The controller 9 general PLC (programmable controller) that adopt are used to control the keying of each magnetic valve or electrical ball valve 41.High pressure water jet cleaning device is existing.
Referring to Fig. 1 and Fig. 2, the jet nozzle 42 of high pressure water jet cleaning device is located at the sidepiece of flue gas bobbin carriage 21, and is regularly arranged.The bottom of air preheater flue gas bobbin carriage 21 is provided with blow-off pipe 8, and blow-off pipe 8 is provided with blowoff valve 81.The bottom of flue gas bobbin carriage 21, the direction along the edge to the centre has a downward-sloping angle, and blow-off pipe 8 is connected in the centre of flue gas bobbin carriage 21 bottoms.Like this, clean the sewage and the black dirt that produce and be easy to compile, and discharge from blow-off pipe 8 in the centre of flue gas bobbin carriage 21 bottoms.
The inner surface of flue gas bobbin carriage 21 (comprising the bottom and the inner surface of two sidepieces, the lower surface of dividing plate 23) is provided with stainless steel inner lining 24 (being generally stainless-steel sheet), can prevent that high-voltage high-speed rinse water miscarriage from giving birth to washes away infringement, and cleans the sewage that produces and the corrosion of black dirt.
Be located at the spacing of adjacent two jet nozzle 42 axial lines of flue gas bobbin carriage 21 the same sides, be generally 0.5～1 meter.The injection diameter of jet nozzle 42 is generally 1～2 millimeter.
It is such that the utility model adopts the process of Cleaning by High Pressure Water Jet operation: after air preheater moves a period of time, when the outer wall of heat-transfer pipe dust stratification, needs occur and cleans in detecting flue gas bobbin carriage 21, with smoke inlet pipe butterfly valve 31 close, gas bypass pipe butterfly valve 11 opens; The flue gas that tubular heater produces directly drains into chimney 10, no longer enters in the flue gas bobbin carriage 21 through gas bypass pipe 1.Afterwards, start high-pressure hydraulic pump 6, the pressurization of the water in the water tank 7 back (is forced into 5～30MPa) and sends into concetrated pipe 5.Controller 9 is according to the program of establishment in advance, take turns successively (for example by from left to right or order from right to left) open magnetic valve set on each root arm 4 or electrical ball valve 41.Water under high pressure in the concetrated pipe 5 upwards flows along arm 4, to jet nozzle 42.Jet nozzle 42 high velocity jet go out High-Pressure Water (flow velocity is generally 50～200 meter per seconds), wash the dust stratification of heat-transfer pipe outer wall.In the cleaning operation process, blowoff valve 81 is opened, and cleans the sewage and the black dirt that produce and discharges from blow-off pipe 8, imports drainage.
Why will open magnetic valve set on each root arm 4 or electrical ball valve 41 successively in turn, mainly be the restriction that is subjected to high-pressure hydraulic pump 6 fan-out capabilities.Generally speaking, at the arbitrary period of cleaning operation, in the many arms 4 outside the flue gas bobbin carriage 21 same sidepieces, have only a magnetic valve or an electrical ball valve 41 on the arm 4 to be in open mode, jet nozzle 42 injection waters set on this arm 4 are cleaned; Magnetic valve or electrical ball valve 41 set on all the other each root arms 4 all are in closed condition.
After cleaning operation was finished, smoke inlet pipe butterfly valve 31 was opened, gas bypass pipe butterfly valve 11 cuts out.The flue gas that tubular heater produces enters in the flue gas bobbin carriage 21, and air preheater promptly begins normal heat exchange operation.Because the outer wall of heat-transfer pipes can be cleaned very cleanly in the flue gas bobbin carriage 21, air preheater can be efficiently, operation stably.After operation a period of time, when dust stratification, needs cleaning appear in the outer wall of heat-transfer pipe in the flue gas bobbin carriage 21, can clean again according to above-mentioned operating process.
More than be that example is illustrated the utility model with the heat pipe preheater.The air preheater of industrial other type commonly used, for example glass tube regenerative air heater, steel tubular air heater also can adopt scheme of the present utility model; Detailed description is omitted.
Claims (3)
1. air preheater, be provided with flue gas bobbin carriage (21), smoke inlet pipe (3), gas bypass pipe (1) and dust stratification scavenge unit, the flue gas bobbin carriage is provided with heat-transfer pipe in (21), be provided with smoke inlet pipe butterfly valve (31) in the smoke inlet pipe (3), be provided with gas bypass pipe butterfly valve (11) in the gas bypass pipe (1), it is characterized in that: described dust stratification scavenge unit is a high pressure water jet cleaning device, the jet nozzle of high pressure water jet cleaning device (42) is located at the sidepiece of flue gas bobbin carriage (21), the bottom of flue gas bobbin carriage (21) is provided with blow-off pipe (8), blow-off pipe (8) is provided with blowoff valve (81), and the inner surface of flue gas bobbin carriage (21) is provided with stainless steel inner lining (24).
2. air preheater according to claim 1 is characterized in that: jet nozzle (42) is located at the one or both sides of flue gas bobbin carriage (21).
3. air preheater according to claim 2 is characterized in that: the spacing of being located at adjacent two jet nozzles (42) axial line of flue gas bobbin carriage (21) the same side is 0.5～1 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201509529U CN201652407U (en) | 2010-04-07 | 2010-04-07 | Air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201509529U CN201652407U (en) | 2010-04-07 | 2010-04-07 | Air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201652407U true CN201652407U (en) | 2010-11-24 |
Family
ID=43117646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201509529U Expired - Lifetime CN201652407U (en) | 2010-04-07 | 2010-04-07 | Air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201652407U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630429A (en) * | 2013-11-12 | 2015-05-20 | 中冶宝钢技术服务有限公司 | Rotary cylinder flue channel cleaning method and spraying apparatus |
| CN106949490A (en) * | 2017-05-08 | 2017-07-14 | 宜兴福鼎环保工程有限公司 | A kind of solid waste rotary furnace waste-heat recovery device |
-
2010
- 2010-04-07 CN CN2010201509529U patent/CN201652407U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630429A (en) * | 2013-11-12 | 2015-05-20 | 中冶宝钢技术服务有限公司 | Rotary cylinder flue channel cleaning method and spraying apparatus |
| CN104630429B (en) * | 2013-11-12 | 2017-03-15 | 中冶宝钢技术服务有限公司 | A kind of cylinder flue method for cleaning and spray equipment |
| CN106949490A (en) * | 2017-05-08 | 2017-07-14 | 宜兴福鼎环保工程有限公司 | A kind of solid waste rotary furnace waste-heat recovery device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: Luoyang Petrochemical Engineering Corporation /SINOPEC Patentee after: China Petrochemical Group Corp. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee before: Luoyang Petrochemical Engineering Co., China Petrochemical Group Patentee before: China Petrochemical Group Corp. |
|
| ASS | Succession or assignment of patent right |
Owner name: SINOPEC LUOYANG PETROCHEMICAL ENGINEERING CORPORAT Free format text: FORMER OWNER: SINOPEC GROUP Effective date: 20130326 Free format text: FORMER OWNER: SINOPEC LUOYANG PETROCHEMICAL ENGINEERING CORPORATION Effective date: 20130326 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100728 CHAOYANG, BEIJING TO: 471003 LUOYANG, HENAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130326 Address after: 471003 Zhongzhou West Road, Henan, China, No. 27, No. Patentee after: Luoyang Petrochemical Engineering Corporation /SINOPEC Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Luoyang Petrochemical Engineering Corporation /SINOPEC |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
|
| CX01 | Expiry of patent term |