CN201852446U - Flexibly adjusted energy-saving type four-in-one reformed heating furnace - Google Patents
Flexibly adjusted energy-saving type four-in-one reformed heating furnace Download PDFInfo
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- CN201852446U CN201852446U CN2010205789707U CN201020578970U CN201852446U CN 201852446 U CN201852446 U CN 201852446U CN 2010205789707 U CN2010205789707 U CN 2010205789707U CN 201020578970 U CN201020578970 U CN 201020578970U CN 201852446 U CN201852446 U CN 201852446U
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Abstract
The utility model relates to a flexibly adjusted energy-saving type four-in-one reformed heating furnace which is characterized by mainly comprising a steel structure (1) of a furnace body, a combustor (2), a first radiation chamber (F201), a second radiation chamber (F202), a third radiation chamber (F203), a fourth radiation chamber (F204), a radiant tube series (3), a convection section (4), a hot air duct (5), an air preheater (9), a collection hot flue (10), a high-temperature flue gas outlet (11), a high-temperature hot flue (12), a hot flue (13), a convection flue gas outlet (14), a chimney (15), a cold flue (16) and a draught fan (17). The flexibly adjusted energy-saving type four-in-one reformed heating furnace has high thermal efficiency, the fuel consumption and the steam production quantity are reduced, and simultaneously the flexibility and the stability of the operation of the four-in-one reformed heating furnace can be improved.
Description
Technical field
The utility model belongs to oil refining, petrochemical industry, relates to a kind of flexible modulation, energy-saving four unification reforming furnaces, and this heating furnace is oil refining, petrochemical industry, Coal Chemical Industry tubular heater, and this heating furnace is the catalytic reforming tubular heater.
Background technology
" reformation " is to make hydrocarbon molecules rearrange into the technical process of recruit's structure: under the effect of catalyst, cycloalkane and alkane change into aromatic hydrocarbons or isoparaffin, simultaneously the by-product hydrogen partial.
Behind the raw material access to plant, at first to process processing, remove harmful impurity and isolate the required acceptable material of reforming, enter the reforming reaction system then through pretreatment system.Reforming reaction is the endothermic reaction, and its required heat is provided by heating furnace.Reforming reactor charging heating furnace generally is called " reformer ".The main feature of reformer is that heated medium is that light oil adds hydrogen, and operating pressure is low, temperature is high, volume flow is big, and allowable pressure drop is little.
Semi-regenerative catalytic reforming and CONTINUOUS REFORMER.Generally all be four reformers, corresponding four reforming reactor serial operations, so its operating pressure also successively decreases thereupon.The operating pressure of semi-regenerative catalytic reforming stove is 1.9-1.5Mpa, about 500 ℃ of heater outlet temperature.The operating pressure of CONTINUOUS REFORMER is 0.5-0.3Mpa, about 550 ℃ of heater outlet temperature.
The kerosene dehydrogenation furnace of the alkylation-dehydrogenation unit of alkylbenzene factory, heated medium are kerosene hydrogenation gas, the about 0.17Mpa of operating pressure, and about 500 ℃ of heater outlet temperature, it is very abundant that the characteristics of above-mentioned reformer also seem, so its design feature and reformer are about the same.
Disproportionation in the aromatic device and isomerization heating furnace, heated medium is that C7-C8 adds hydrogen, operating pressure 3 Mpa(disproportionations) and 0.83 Mpa(isomerization), 482 ℃ of heater outlet temperatures (disproportionation) and 370 ℃ (isomerization), the characteristics of above-mentioned reformer are also apparent in view, and its design feature is also similar with reformer.
Usually adopt pure radial pattern cylindrical furnace in 15-30 ten thousand tons of/year half-regeneration reformers of early stage treating capacity.Boiler tube is the standpipe multi-channel parallel, radiation top design two circle heavy caliber concetrated pipes, and the gateway pipeline connects with this annular concetrated pipe in the stove.Be characterized in: though boiler tube multi-channel parallel way can not be too many, so pressure drop is bigger; Burner is to burn at the end, can oil-gas multifuel combustion, and it is many generally burning gas; Single fire grate cigarette temperature height, the thermal efficiency is low, needs that the high-temperature flue gas of discharging is introduced residual neat recovering system and reclaims; The separate unit furnace construction is simple, and construction period is short, and scale of investment is little, is applicable to dingus.
Along with the progress of catalytic reforming process, great change has also taken place in the scale of reforming furnace.Reduce total system pressure and become the developing direction of modern catalytic reforming, low pressure is reformed and can be brought into play the usefulness of catalyst better, and the octane number of product and aromatics yield can be higher.Novel De Bo Rhenium catalyst or multimetal reforming catalyst, because their activity stability height, carbon distribution is little to the influence of product yield, adopts low voltage operated technology, not only can change the quality of product, also can reduce the kinetic energy consumption of gas compressor.So it is little that the outstanding feature of reformer is exactly the pressure drop of requirement tube fluid.The medium volume flow is big in the reforming tube that maximizes, the tapping temperature height.The boiler tube of heating furnace is designed to tens road boiler tube parallel connections more.Cylindrical furnace structurally can not satisfy the requirement of maximization, and novel furnace arises at the historic moment.As Fig. 1, the modular design of novel stove is that four heating furnaces are merged into a large-scale gate-type heating furnace, and the centre is separated out four radiation chambers with wall with flues, to avoid the mutual interference of temperature phase.Every boiler tube is a multi-channel parallel, generally designs 20-45 road arms.The gateway of each arm links to each other with stove large set pipe outward.The high-temperature flue gas of radiation chamber enters a public convection section, at the required middle pressure steam of convection section generating means.This type of furnace is applicable to high throughput (40-120 * 10
4T/a) reformer.
The characteristics of reforming furnace are: heated medium tapping temperature height, operating pressure height, allowable pressure drop is little, volume flow is big; Boiler tube costs an arm and a leg, boiler tube average surface calorific intensity height, require boiler tube to be heated evenly, and fuel is for clean high heating value gas, flue gas go out radiation chamber temperature height, 50% heat is used to produce steam.Because of oil plant does not lack steam, the heat of reforming furnace 50% is used to produce steam, not only makes reformer energy consumption height, and it is unreasonable, uneconomical to produce steam with clean high heating value gas, also can be described as a kind of waste.In order to reduce the steam production of reforming furnace, on technology, adopt various measures, spent all scheming, but gathered in the crops not quite.
180 ℃ of tradition four unification reforming furnace exhaust gas temperatures, the thermal efficiency 89%; Flue gas goes out radiation chamber temperature height, 50% heat is used to produce steam.Because of oil plant does not lack steam, the heat of reforming furnace 50% is used to produce steam, not only makes reformer energy consumption height, and it is unreasonable, uneconomical to produce steam with clean high heating value gas, also can be described as a kind of waste.
Along with the national economic development is more and more higher to environmental requirement to the continuous increase and the country of light Fuel demand, for satisfying the needs of the national economic development to light Fuel demand and environmental protection, the reformation technology will be developed rapidly and be promoted.The characteristics of reforming furnace are: heated medium tapping temperature height, operating pressure height, allowable pressure drop is little, volume flow is big; Boiler tube costs an arm and a leg, boiler tube average surface calorific intensity height, require boiler tube to be heated evenly, and fuel is for clean high heating value gas, flue gas go out radiation chamber temperature height, 50% heat is used to produce steam.Because of oil plant does not lack steam, the heat of hydrogenation and reforming furnace 50% is used to produce steam, not only makes hydrogenation and reformer energy consumption height, operation easier is big, and it is unreasonable, uneconomical to produce steam with clean high heating value gas, also can be described as a kind of waste.In order to reduce the steam production of hydrogen manufacturing, hydrogenation and large-scale reforming furnace, on technology, adopt various measures, spent all scheming, but gathered in the crops not quite.
Summary of the invention
The utility model purpose is in order to overcome above-mentioned defective, a kind of flexible modulation, energy-saving four unification reforming furnaces to be provided, and mainly is to solve problem and the defective that tradition four unification reforming furnaces exist.
The technical solution of the utility model is:
A kind of flexible modulation, energy-saving four unification reforming furnaces, it is mainly by furnace binding, burner, first radiation chamber, second radiation chamber, the 3rd radiation chamber, the 4th radiation chamber, the radiation piping, convection section, hot-flow flue, air preheater, the set heating flue, the high-temperature flue gas outlet, the elevated temperature heat flue, heating flue, the convection current exhanst gas outlet, chimney, the cold smoke road, air-introduced machine is formed, first radiation chamber, second radiation chamber, the 3rd radiation chamber, the bottom of the 4th radiation chamber is respectively equipped with burner, first radiation chamber, second radiation chamber, the 3rd radiation chamber, be provided with a type boiler tube system in the 4th radiation chamber, door type boiler tube system top is provided with convection section; The convection section top is provided with heating flue and convection current exhanst gas outlet, heating flue connects air preheater by the set heating flue, evaporator section side wall place, convection section middle part establishes high-temperature flue gas outlet and elevated temperature heat flue, the elevated temperature heat flue is communicated with heating flue, described air-introduced machine is communicated with heating flue, and the outlet of air preheater cold smoke is communicated with chimney by the cold smoke road.
The utility model also comprises the bypass air channel, and bypass air channel one end connects air preheater, and the other end in bypass air channel connects the air outlet of air blast, and the air inlet of air blast is connected with air inlet.
Described convection section is a steam generator.
The beneficial effects of the utility model are:
The characteristics of flexible modulation of the present utility model, energy-saving four unification reforming furnaces are:
1. tradition four unification reforming furnace burning air feeds are the nature air feed; Flexible modulation, energy-saving four unification reforming furnace burning air feeds are for forcing air feed; Strengthened fuel and mixed, reduced the burning excess air coefficient with air.
2. compare with tradition four unification reforming furnaces, set up and landed flue gas waste heat recovery system, exhaust gas temperature is reduced to 120 ℃, the thermal efficiency is carried and is got 93%; Energy-saving effect is obvious.
3. compare with tradition four unification reforming furnaces, flexible modulation, energy-saving four unification reforming furnaces are established high-temperature flue gas outlet 11 and elevated temperature heat flue 12 at evaporator section side wall place, convection section middle part, and a part of high-temperature flue gas is introduced set heating flue 10; Elevated temperature heat flue 12 is provided with the sealing controllable register, according to the needs of producing steam, regulates the high-temperature flue gas amount that enters set heating flue 10; Can reduce the steam production of four unification reforming furnaces, improve flexibility, the stationarity of four unification reforming furnace operations again.
4. flexible modulation, energy-saving four is unified not only thermal efficiency height of reforming furnaces, has reduced fuel consumption, and has reduced the steam production of four unification reforming furnaces, has also improved flexibility, the stationarity of four unification reforming furnaces operations simultaneously.
Flexible modulation of the present utility model, energy-saving four unification reforming furnaces are for reducing the reformer energy consumption, and the flexibility, the stationarity that improve reformer technical merit and operation have significance.Therefore this technology will have good prospects for application.
Description of drawings
Fig. 1 is the structural representation of existing CONTINUOUS REFORMER stove.
Fig. 2 is a structural representation of the present utility model.
Part description among the figure:
1---furnace binding 7---air inlet 13---heating flue
2---burner 8---bypass air channel 14---convection current exhanst gas outlets
3---radiation piping 9---air preheater 15---chimneys
4---convection section 10---set heating flue 16---cold smoke roads
5---hot-flow flue 11---high-temperature flue gas outlet 17---air-introduced machines
6---air blast 12---elevated temperature heat flue.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
A kind of flexible modulation, energy-saving four unification reforming furnaces, it is mainly by furnace binding 1, burner 2, the first radiation chamber F201, the second radiation chamber F202, the 3rd radiation chamber F203, the 4th radiation chamber F204, radiation piping 3, convection section 4, hot-flow flue 5, air preheater 9, set heating flue 10, high-temperature flue gas outlet 11, elevated temperature heat flue 12, heating flue 13, convection current exhanst gas outlet 14, chimney 15, cold smoke road 16, air-introduced machine 17 is formed, the first radiation chamber F201, the second radiation chamber F202, the 3rd radiation chamber F203, the bottom of the 4th radiation chamber F204 is respectively equipped with burner 2, and fuel sprays into radiation chamber F201 ~ F204 at the high-temperature flue gas that burner 2 internal combustion produce.Be provided with a type boiler tube system 3 in the first radiation chamber F201, the second radiation chamber F202, the 3rd radiation chamber F203, the 4th radiation chamber F204, be used for the heated reformate processing medium, flue gas converges the gas system by the radiation top and enters convection section 4; Door type boiler tube system 3 tops are provided with convection section 4; Convection section 4 tops are provided with heating flue 13 and convection current exhanst gas outlet 14, heating flue 13 connects air preheater 9 by set heating flue 10, evaporator section side wall place, convection section middle part establishes high-temperature flue gas outlet 11 and elevated temperature heat flue 12, elevated temperature heat flue 12 is communicated with heating flue 13, described air-introduced machine 17 is communicated with heating flue 13, and the outlet of air preheater 9 cold smokes is communicated with chimney 15 by cold smoke road 16.The flue gas that goes out convection section is under air-introduced machine 17 draft effects, enter air preheater 9 and air heat exchange after entering set heating flue 10 and high-temperature flue gas from elevated temperature heat flue 12 mixes by heating flue 13, temperature is reduced to 120 ℃ and enters cold smoke road 16 and send into chimney 15 and discharge.Evaporator section side wall place establishes high-temperature flue gas outlet 11 and elevated temperature heat flue 12 at the convection section middle part, and a part of high-temperature flue gas is introduced set heating flue 10; Elevated temperature heat flue 12 is provided with the sealing controllable register, according to the needs of producing steam, regulates the high-temperature flue gas amount that enters set heating flue 10.Air blast 6 is assigned to burner 2 by hot-flow flue 5 after air is sent into air preheater 9 and air heat exchange.
The utility model also comprises bypass air channel 8, and bypass air channel 8 one ends connect air preheater 9, and the other end in bypass air channel 8 connects the air outlet of air blast 6, and the air inlet of air blast 6 is connected with air inlet 7.
Convection section 4 is a steam generator.
Air capacity adopts the O/CO tandem to regulate control; With flue gas O content is that main control, content of CO in smoke are sub-control.Utilization is arranged on air preheater 9 exhanst gas outlet CO content in-line analyzers and zirconia is measured O and the CO content in the flue gas and changed into the DCS system that electric signal is delivered to the control room.The DCS system carries out analyzing and processing by the signal that zirconia and CO in-line analyzer are obtained, the blower variable frequency speed regulator is sent instruction, and variable-frequency governor realizes that according to the rotating speed of instruction change air blast wind supply quantity is regulated and control, the smoke evacuation in Control for Oxygen Content 3%, CO content 80ppm.Selecting bypass air channel 8 flows is the controlled plant bar, utilizes the online flue gas dew point temperature-indicating instrument that is located at the air preheater exhanst gas outlet to measure the flue gas dew point temperature, is located at the thermocouple measurement heating furnace exhaust gas temperature of air preheater exhanst gas outlet.Thermoregulator is regulated the aperture that control is located at the sealing controllable register in bypass air channel 8 according to the difference of exhaust gas temperature and flue gas dew point temperature.When exhaust gas temperature and flue gas dew point temperature difference during less than 10 ℃, thermoregulator is opened the sealing controllable register in bypass air channel 8, makes a part of cold air enter hot-flow flue through bypass, reduces cold air heat exchange load, and exhaust gas temperature is raise.When exhaust gas temperature and flue gas dew point temperature difference during greater than 10 ℃, thermoregulator is turned the sealing controllable register aperture in bypass air channel 8 down, even the sealing controllable register of closing bypass air channel 8, strengthens cold air heat exchange load, and exhaust gas temperature is reduced; Guarantee that exhaust gas temperature is higher than the flue gas dew point temperature more than 10 ℃ all the time, make heating furnace obtain maximum thermal efficiency; Make air preheater that flue gas acid dew point corrosion and the serious dust stratification of heat transfer element, incrustation problem can not take place again.
Embodiment recited above is described preferred implementation of the present utility model; be not that design of the present utility model and scope are limited; do not breaking away under the utility model design concept prerequisite; common engineers and technicians make the technical solution of the utility model in this area various modification and improvement; all should fall into protection domain of the present utility model, the technology contents that the utility model is asked for protection all is documented in claims.
Claims (3)
1. flexible modulation, energy-saving four unification reforming furnaces, it is characterized in that it is mainly by furnace binding (1), burner (2), first radiation chamber (F201), second radiation chamber (F202), the 3rd radiation chamber (F203), the 4th radiation chamber (F204), radiation piping (3), convection section (4), hot-flow flue (5), air preheater (9), set heating flue (10), high-temperature flue gas outlet (11), elevated temperature heat flue (12), heating flue (13), convection current exhanst gas outlet (14), chimney (15), cold smoke road (16), air-introduced machine (17) is formed, first radiation chamber (F201), second radiation chamber (F202), the 3rd radiation chamber (F203), the bottom of the 4th radiation chamber (F204) is respectively equipped with burner (2), first radiation chamber (F201), second radiation chamber (F202), the 3rd radiation chamber (F203), be provided with a type boiler tube system (3) in the 4th radiation chamber (F204), door type boiler tube system (3) top is provided with convection section (4); Convection section (4) top is provided with heating flue (13) and convection current exhanst gas outlet (14), heating flue (13) connects air preheater (9) by set heating flue (10), evaporator section side wall place, convection section middle part establishes high-temperature flue gas outlet (11) and elevated temperature heat flue (12), elevated temperature heat flue (12) is communicated with heating flue (13), described air-introduced machine (17) is communicated with heating flue (13), and the outlet of air preheater (9) cold smoke is communicated with chimney (15) by cold smoke road (16).
2. a kind of flexible modulation according to claim 1, energy-saving four unification reforming furnaces, it is characterized in that also comprising bypass air channel (8), bypass air channel (8) one ends connect air preheater (9), the other end in bypass air channel (8) connects the air outlet of air blast (6), and the air inlet of air blast (6) is connected with air inlet (7).
3. a kind of flexible modulation according to claim 1, energy-saving four unification reforming furnaces is characterized in that described convection section (4) is a steam generator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205789707U CN201852446U (en) | 2010-10-27 | 2010-10-27 | Flexibly adjusted energy-saving type four-in-one reformed heating furnace |
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| CN2010205789707U CN201852446U (en) | 2010-10-27 | 2010-10-27 | Flexibly adjusted energy-saving type four-in-one reformed heating furnace |
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| CN201852446U true CN201852446U (en) | 2011-06-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754636A (en) * | 2016-04-29 | 2016-07-13 | 上海浩用工业炉有限公司 | Reforming heating furnace with flue heat step compensation |
| CN107286977A (en) * | 2017-07-01 | 2017-10-24 | 上海英保能源化工科技有限公司 | Continuous reformer combination type heating furnace saves novel furnace |
| CN107955645A (en) * | 2017-10-21 | 2018-04-24 | 上海英保能源化工科技有限公司 | Continuous reformer five in one heating furnace |
| CN112265962A (en) * | 2020-10-30 | 2021-01-26 | 庄焱法 | Electric cooperative heat supply reforming reaction system |
-
2010
- 2010-10-27 CN CN2010205789707U patent/CN201852446U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754636A (en) * | 2016-04-29 | 2016-07-13 | 上海浩用工业炉有限公司 | Reforming heating furnace with flue heat step compensation |
| CN107286977A (en) * | 2017-07-01 | 2017-10-24 | 上海英保能源化工科技有限公司 | Continuous reformer combination type heating furnace saves novel furnace |
| CN107955645A (en) * | 2017-10-21 | 2018-04-24 | 上海英保能源化工科技有限公司 | Continuous reformer five in one heating furnace |
| CN112265962A (en) * | 2020-10-30 | 2021-01-26 | 庄焱法 | Electric cooperative heat supply reforming reaction system |
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| C14 | Grant of patent or utility model | ||
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| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: SINOPEC NANJING ENGINEERING CO., LTD. Effective date: 20130205 Owner name: SINOPEC NANJING ENGINEERING COMPANY LIMITED Free format text: FORMER OWNER: SINOPEC GROUP Effective date: 20130205 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 100027 CHAOYANG, BEIJING TO: 211100 NANJING, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20130205 Address after: 211100, No. 1189, Jian Jian Road, Dongshan Town, Jiangning District, Jiangsu, Nanjing Patentee after: Sinopec Nanjing Engineering & Construction Inc. Address before: 100027 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: SINOPEC Nanjing Engineering & Construction Inc. |
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| CX01 | Expiry of patent term |
Granted publication date: 20110601 |
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| CX01 | Expiry of patent term |