CN201582776U - Afterburning catalytic waste heat boiler - Google Patents
Afterburning catalytic waste heat boiler Download PDFInfo
- Publication number
- CN201582776U CN201582776U CN200920288443XU CN200920288443U CN201582776U CN 201582776 U CN201582776 U CN 201582776U CN 200920288443X U CN200920288443X U CN 200920288443XU CN 200920288443 U CN200920288443 U CN 200920288443U CN 201582776 U CN201582776 U CN 201582776U
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- afterburning
- waste heat
- heat boiler
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- flue
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Abstract
The utility model discloses an afterburning catalytic waste heat boiler used for recycling flue gas in a catalytic cracking unit. The afterburning catalytic waste heat boiler comprises an afterburner, a transitional flue, an inlet flue, an overheat section, an evaporating section, a coal-saving section, an outlet flue and a steam pocket; the inlet flue is connected with the afterburner by the transitional flue; the afterburner is an afterburning chamber which is of a heat-insulating hearth structure and has no heat-absorbing elements at the circumference; and the catalytic flue gas inlet is arranged on the afterburner. In the utility model, the overheat section is a secondary convection heat-transmission over-heater. Compared with the traditional afterburning catalytic waste boiler radiation over-heater and the convection over-heater, the weight is lighter and the investment is less; the combustion is carried out in the afterburning chamber; the conductive heat transmission manner is adopted so that the steam temperature is easy to control and the operation is sensitive, safe and efficient. The afterburning catalytic waste heat boiler breaks through the structural form of the traditional afterburning catalytic waste heat boiler, adapts to the characteristic of the catalytic cracking unit, is easy to adopt the automation control, meets the energy-saving and emission-reducing requirements, and makes the contributions to the construction of resource-saving society.
Description
One, technical field
The utility model belongs to the waste heat boiler equipment technical field, particularly is applicable to the fuel supplementing type waste heat boiler that the catalytic cracking unit flue gas reclaims.
Two, background technology
Catalytic cracking is one of main method of oil secondary operations, in the crude oil deep processing, particularly in heavy oil transformation, is bringing into play important effect.Domestic nearly 50% mink cell focus machines by catalytic cracking unit at present, is the catalytically cracked gasoline component more than 80% in the gasoline product.Catalytic cracking plays crucial effects to promoting the petroleum refining industry of China to the national economic development.
The key equipment that waste heat boiler reclaims as flue gas in the catalytic cracking unit all plays crucial effect to the safety in production that guarantees the normal operation of petroleum chemical enterprise's middle pressure steam pipe network and each device of enterprise.The structure of waste heat boiler, performance and parameter all greatly influence the miscellaneous equipment of catalytic cracking unit.The fluctuation of the Gas Parameters of bringing owing to the variation of catalytic cracking unit processing capacity and to the strict demand of superheat steam temperature, waste heat boiler need dispose the afterburning system.
Tradition band fuel supplementing type catalysis waste heat boiler is that a radiation superheater is set on waste heat boiler, and radiation superheater is connected with the exhaust-heat boiler inlet flue through the transition flue.The burner interface is arranged on radiation superheater, and the catalysis gas approach is on gas approach.Burning is carried out in radiation superheater, is heat absorbing element around the radiation superheater; The convection heat transfer' heat-transfer by convection superheater of waste heat boiler is an one-level.Saturated vapor enters the radiation superheater heating after conducting heat through the one-level convection superheater.
Tradition band afterburning catalysis waste heat pot radiation superheater and convection superheater weight are big, and rolled steel dosage is many, and comes the steam regulation thermotonus slow, insensitive by radiant heat transfer.The easy booster of radiant heat transfer tube panel in addition, this give the catalysis waste heat boiler the even running band hidden danger.
Three, summary of the invention
The purpose of this utility model provides a kind of safe, efficient, energy-conservation fuel supplementing type catalysis waste heat boiler.
The technical solution adopted in the utility model is: fuel supplementing type catalysis waste heat boiler comprises combustion-compensating device, transition flue duct, gas approach, superheat section, evaporator section, province's coal section (two-stage, comprise one-level economizer, secondary economizer), exhaust pass and drum, gas approach is connected with combustion-compensating device through the transition flue, combustion-compensating device of the present utility model is an afterburning chamber, afterburning chamber is the adiabatic furnace structure, water material feeding by steel construction and heat insulation and wear resistance and form, do not have heat absorbing element all around; The catalysis gas approach is positioned on the combustion-compensating device.
The utility model superheat section is a secondary convection heat transfer' heat-transfer by convection superheater, contrast tradition band afterburning catalysis waste heat pot radiation superheater and convection superheater, and weight is lighter, reduces investment outlay; Burning is carried out in afterburning chamber, adopts the conduction heat transfer mode to make vapor (steam) temperature be easy to control, and manual dexterity is safe and efficient.The utility model has been broken traditional band afterburning catalysis waste heat boiler version, has adapted to the characteristics of catalytic cracking unit, is easy to adopt automation control, has satisfied the energy-saving and emission-reduction requirement, contributes for China builds a conservation-minded society.
Four, description of drawings
Fig. 1 is the structural representation of tradition band fuel supplementing type catalysis waste heat boiler;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is the link position schematic diagram of each parts of the utility model.
Five, the specific embodiment
Tradition band afterburning catalysis waste heat boiler is made up of combustion-compensating device 1, transition flue duct 2, gas approach 3, superheat section 4, evaporator section 5, province's coal section exhaust pass 6 (comprising two-stage) 7, drum 8.Superheat section 4 is a convection superheater, and combustion-compensating device 1 is a radiation superheater, and burner interface A is arranged on radiation superheater, and catalysis gas approach B has exhanst gas outlet C on the exhaust pass 7 on gas approach 3.Burning is carried out in radiation superheater, the flue gas that the burning back produces is through transition flue 2, in gas approach 3, mix with the catalysis flue gas, mixed flue gas passes through superheat section (convection superheater) 4, evaporator section 5 successively, economizes coal section 6, exhaust pass 7, wherein transition flue duct 2, gas approach 3, exhaust pass 7 no heat exchange elements.In radiation superheater 1, convection superheater 4, evaporator section 5, the province's coal section 6 heat exchange element is arranged, drum 8 is formed natural convection loops with evaporator section 5.
Combustion-compensating device 1 of the present utility model is an afterburning chamber, burner interface A and catalysis gas approach B all are positioned on the combustion-compensating device (afterburning chamber) 1, catalysis drying gas and air that afterburning is used burn in afterburning chamber by a certain percentage, and flue gas that adopt the burning back and catalysis flue gas are altogether successively through transition flue duct 2, gas approach 3, superheat section 4, evaporator section 5, province's coal section 6, exhaust pass 7.Wherein do not have heat exchange element in afterburning chamber 1, transition flue duct 2, gas approach 3, the exhaust pass 7, superheat section 4, evaporator section 5, province's coal section 6 have heat exchange element, and drum 8 is formed natural convection loops with evaporator section 5.Superheat section 4 has the two-stage superheater, and top is high temperature superheater, and the bottom is a low temperature superheater, is convection heat transfer' heat-transfer by convection.Drum supports 9 drum 8 is supported; The utlity model has afterburning chamber and support 10, afterburning chamber supports 10 afterburning chamber is lifted to the height that adapts with gas approach 3.
The utility model workflow is:
Boiler feedwater is to the bottom low-level (stack-gas) economizer of economizing in the coal section 6, water in the low-level (stack-gas) economizer heat exchanger tube through with heat transfer outside a tube after enter top high-temperature economizer in province's coal section 6, water part after the high-temperature economizer heating enters in the drum 8, another part is conducted to other device outward, the water that enters drum 8 enters evaporator section 5 by down-comer, steam water interface enters in the drum 8 after evaporator section 5 heating, through the steam-water separator device in the drum 8 saturated vapor is separated, the saturated vapor that saturated vapor comes with other device enters the low temperature superheater of superheat section 4 middle and lower parts, through the high temperature superheater heating of process superheat section 4 middle and upper parts again after the low temperature superheater heating, produce satisfactory superheated steam.
Claims (3)
1. fuel supplementing type catalysis waste heat boiler, comprise combustion-compensating device (1), transition flue duct (2), gas approach (3), superheat section (4), evaporator section (5), economize coal section (6), exhaust pass (7) and drum (8), gas approach (3) is connected with combustion-compensating device (1) through transition flue (2), it is characterized in that: combustion-compensating device (1) is an afterburning chamber, afterburning chamber is the adiabatic furnace structure, water material feeding by steel construction and heat insulation and wear resistance and form, do not have heat absorbing element all around; The catalysis gas approach is positioned on the combustion-compensating device (1).
2. fuel supplementing type catalysis waste heat boiler according to claim 1 is characterized in that: superheat section (4) has the two-stage superheater.
3. fuel supplementing type catalysis waste heat boiler according to claim 1 is characterized in that: it has afterburning chamber and supports (10), and afterburning chamber supports (10) and afterburning chamber is lifted to the height that adapts with gas approach (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920288443XU CN201582776U (en) | 2009-12-28 | 2009-12-28 | Afterburning catalytic waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920288443XU CN201582776U (en) | 2009-12-28 | 2009-12-28 | Afterburning catalytic waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582776U true CN201582776U (en) | 2010-09-15 |
Family
ID=42724777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920288443XU Expired - Fee Related CN201582776U (en) | 2009-12-28 | 2009-12-28 | Afterburning catalytic waste heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201582776U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075745A (en) * | 2013-03-27 | 2014-10-01 | 上海赫特能源科技有限公司 | Boiler combustion test furnace |
| CN105953201A (en) * | 2016-06-24 | 2016-09-21 | 江苏太湖锅炉股份有限公司 | Vertical complementary combustion type waste heat boiler |
| CN106122915A (en) * | 2016-08-09 | 2016-11-16 | 太原锅炉集团有限公司 | One has preposition fin panel casing afterburning burner hearth vertical industrial silicon waste heat boiler |
-
2009
- 2009-12-28 CN CN200920288443XU patent/CN201582776U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075745A (en) * | 2013-03-27 | 2014-10-01 | 上海赫特能源科技有限公司 | Boiler combustion test furnace |
| CN105953201A (en) * | 2016-06-24 | 2016-09-21 | 江苏太湖锅炉股份有限公司 | Vertical complementary combustion type waste heat boiler |
| CN106122915A (en) * | 2016-08-09 | 2016-11-16 | 太原锅炉集团有限公司 | One has preposition fin panel casing afterburning burner hearth vertical industrial silicon waste heat 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20161228 |