CN1511926A - Cracking furnace - Google Patents
Cracking furnace Download PDFInfo
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- CN1511926A CN1511926A CNA021589690A CN02158969A CN1511926A CN 1511926 A CN1511926 A CN 1511926A CN A021589690 A CNA021589690 A CN A021589690A CN 02158969 A CN02158969 A CN 02158969A CN 1511926 A CN1511926 A CN 1511926A
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Abstract
The cracking furnace for cracking organic material hydrocarbons includes a radiation section furnace body; burners arranged in rows inside the furnace body; at least two flame radiation planes comprising at least one row of burners; and at least three rows of reflecting furnace tubes in the radiation section set perpendicularly between two flame radiation planes, with the furnace tubes includes at least one row of outlet tubes between two rows of inlet tubes and two inlet tubes between one row of outlet tubes and one radiation plane. The cracking furnace of the present invention has radiation section furnace body with small length, small volume and low cost, homogeneous temperature distribution around the outlet tubes, high destination product yield and other advantages, and the present invention is suitable for reforming and extending available cracking furnace.
Description
Technical field
The present invention relates to a kind of hyperthermia radiation heat industrial furnaces, especially for the hydrocarbon cracking stove of producing unsaturated olefin (ethene, propylene, divinyl etc.) and by product.
Background technology
Pyrolyzer mainly is made up of convection zone and radiation section.Convection zone is used for the preheating logistics, and recovery waste heat is not the major portion of decision pyrolyzer performance; Scission reaction is carried out and is finished at radiation section.The difference of the structure of radiant coil, size, arrangement mode has determined the performance of pyrolyzer to have constituted the different type of furnaces to a great extent.
Pyrolyzer is one of most important in the ethylene unit, that investment is maximum equipment.In order to improve pyrolyzer throughput and other performances, expand the scale of production, reduce investment outlay, reduce cost, reasonably determine the structure and the arrangement mode of radiant coil, have crucial meaning.This also is the problem that pyrolyzer manufacturer and ethylene production person explore in effort always.In this respect, up to the present, obtained many progress really, but still existed some need make the problem of significant improvement.
In the prior art, the arrangement mode of common radiation section reaction boiler tube can be summed up as three kinds basically: a kind of is the arrangement mode of the in line two-sided radiation heating of single file.This is present most widely used a kind of arrangement mode.It is more even that the advantage of this arrangement mode is that boiler tube circumferentially is heated, more abundant to the utilization of furnace tube material.But the shortcoming of this kind arrangement mode also is well-known: the stove compactedness is relatively poor, for certain industrial scale, the stove volume is big, floor space is big, be unfavorable for reducing investment outlay, be unfavorable for the realization that pyrolyzer maximizes, more be unfavorable for the transformation that the limited existing cracker in place is expanded production capacity.
For overcoming the deficiency of first kind of above-mentioned arrangement mode, so the second way has just been arranged again: promptly two line interlacings are arranged two-sided radiation heating mode.A typical example is: at boiler tube is in the pyrolyzer of two journeys, and inlet tube and outlet pipe are arranged alternately on two row, and this two row lays respectively at the both sides of the horizontal longitudinal midline of body of heater, and is equal to the distance of described center line.By the two-sided heating of burner near the body of heater side wall.The purpose of this kind arrangement mode is: arrange more radiating furnace tube in same body of heater volume, improve the throughput of stove unit volume, reduce floor space, reduce investment.But there is the circumferential hot strength of the boiler tube serious uneven problem that distributes in this kind arrangement mode.Because boiler tube is striden the body of heater center line and is arranged in two row, two row boiler tubes cover mutually, so there is the asymmetry of the significant circumferentially temperature difference and serious circumferential temperature distribution in boiler tube.This temperature difference can not be ignored for the influence of the higher outlet pipe of typical temperature because it the running period of pyrolyzer is shortened or (with) throughput descends.Obviously, this has violated its original intention to a considerable extent, and circumferentially the asymmetry of temperature distribution is to cause one of diastrophic common cause of reaction boiler tube.This is the very big shortcoming that radiant coil two line interlacings are arranged.
The arrangement mode of the third radiation section reaction boiler tube is comprehensive in addition aforementioned first and second dual mode, the design and adopted first part's (being inlet tube) to be arranged in double alternative form at radiant coil, and second section (being outlet pipe) then adopts the single row of tubes structure.This arrangement mode comes down to the compromise of aforementioned first and second kind mode.Its shortcoming is, compares with single row of tubes, and because of covering mutually between the two line entry pipes, the adjacent tubes spacing again must be less in the row, otherwise compactedness is poor.So circumferential temperature distributing disproportionation, heat transfer efficiency is low; Compare with boiler tube two row arrangements, overall compactness is poor, and body of heater length is big, and floor space is big.In addition, the syndeton complexity between the pipe of entry and exit also is an apparent and don't negligible shortcoming of this arrangement mode.
It may be noted that especially, at existing reaction tubes is in the pyrolyzer of two journeys (or more than two journeys), a problem that is ubiquitous of Cun Zaiing also, be exactly pyrolyzer when operation, tube wall metal mean temperature difference is very big between outlet pipe of radiation section reaction boiler tube (being last journey pipe) and the inlet tube (i.e. the first journey pipe), and heat load distribution is unreasonable, be that the outlet pipe pipe surface temperature is higher, easily coking, especially in the stove running later stage, this phenomenon is more remarkable.This has not only had a strong impact on the running period of stove, but also causes the size of axial thermal expansion amount between each journey boiler tube and creep elongation amount significantly different.Comparable first journey of general last journey is big 2～3 times, and serious reaches 5～6 times.This can cause boiler tube to produce very big stress, serious flexural deformation even fracture occur, makes the boiler tube lost of life.
Summary of the invention
The object of the present invention is to provide a kind of novel pyrolyzer that adopts the compact construction that new arrangement mode is provided with the radiation section reaction boiler tube.It can not only solve existing pyrolyzer effectively, and particularly radiant coil single file arrangement pyrolyzer floor space is big, the problem that space availability ratio is low, the boiler tube that can also improve existing boiler tube two row arrangement mode pyrolyzer be the circumferential problem of being heated evenly property difference of outlet pipe particularly.
The technical scheme that realizes the object of the invention is:
The invention provides pyrolyzer, comprising: the radiation section body of heater in order to cracking organic raw material hydro carbons; Be arranged on the intravital burner of embarking on journey and arranging of above-mentioned stove; At least constitute a flame radiaton face by row's said burner burning, every stove comprises two above-mentioned flame radiaton faces at least; Be vertically set on above-mentioned per two flame radiaton face intermediary radiation section reaction boiler tubes; In order to organic raw material is infeeded the inlet manifold of above-mentioned reaction tubes; Be arranged on the rapid-cooling heat exchanger of above-mentioned body of heater outside; The reaction tubes outlet header that is connected with above-mentioned rapid-cooling heat exchanger in order to outlet with a plurality of above-mentioned reaction tubess.
The present invention adopts new spread pattern that the radiation section reaction boiler tube is set, between intravital per two the flame radiaton faces of described radiant section furnace, the radiation section reaction boiler tube along with the horizontal symmetrical of described two flame radiaton faces in the straight line of line parallel be arranged to triplex row at least, wherein, outlet pipe is arranged in delegation at least, between two line entry pipes, every line entry pipe is between delegation's outlet pipe and flame radiaton face.
Inlet tube and outlet pipe are single passage, and between two flame radiaton faces, the radiation section reaction boiler tube can adopt the wrong row of triplex row, mix any form setting of arranging, and wherein, the width between centers of two-phase neighbor entry pipe is 4-7 with the scope of the external diameter ratio of inlet tube.
Inlet tube and outlet pipe are single passage, between two flame radiaton faces, the radiation section reaction boiler tube can adopt the wrong row of four lines, and any form of in-line arrangement is provided with, and the width between centers of adjacent two outlet pipes is identical with the width between centers of adjacent two inlet tubes in every every trade in wherein every every trade.
Inlet tube is a two channels, and outlet pipe is a single passage, between two flame radiaton faces, the radiation section reaction boiler tube can be selected the wrong row of triplex row for use, in-line arrangement, and any form of fork row is provided with, wherein, the width between centers of adjacent two outlet pipes is identical with the width between centers of adjacent inlet tube in every every trade in every every trade.
Outlet pipe is a single passage, and in radiation section, the radiation section reaction boiler tube is arranged to six row, and between the flame radiaton face, every triplex row reaction boiler tube is one group at each.
Novel pyrolyzer provided by the invention has following advantage:
1. radiation section reaction boiler tube physical construction and arrange simply, reliable, collocation form is convenient, flexible, the collecting tubule of radiator tube and its inlet easy to connect.Pipe connecting between the entry and exit pipe of all radiator tubes can be arranged on the same plane, does not have flyover, overlapping and cross between mutually, and the furnace space utilization is more abundant, is convenient to the installation and maintenance construction.Disturb each other when radiator tube heat is flexible under the working order, collide possibility and significantly reduce, be difficult for producing flexural deformation.The radiator tube outlet is simple and convenient, flexible with being connected of quencher.
Since the outlet pipe ranking between the two line entry pipes rows, when outlet pipe was arranged as delegation, burner and inlet tube row became symmetric offset spread about outlet pipe row center line, so the circumferential heat flux distribution good uniformity of outlet pipe.This is that existing reaction tubes two row arrangement pyrolyzer are incomparable.Though an inlet tube row only side directly faces radiant heat source (flame and/or radiation furnace wall side wall), but because of boiler tube is arranged in triplex row at least, so can be under the prerequisite that guarantees reaction tubes overall alignment compactness, the ratio of adjacent two inlet tube width between centers and caliber is bigger in the row of making, compare with the prior art that reaction tubes two row are arranged, inlet tube circumferentially being heated evenly property is good, and heat flux is big.The potentiality of inlet tube heat-transfer capability fully, have reasonably been utilized.Because the inlet tube ranking is between above-mentioned radiant heat source and outlet pipe row, inlet tube row has certain shielding effect to the radiant heat that above-mentioned radiant heat source passes to outlet pipe row.Outstanding feature of the present invention is exactly to have utilized this shielding effect of the lower inlet tube of typical temperature to the higher outlet pipe of temperature dexterously, reached unexpected but be the effect that people dream of for many years: the heat flux that effectively and moderately reduces outlet pipe, improve the heat flux of inlet tube, heat is shifted to the lower inlet tube of temperature from the higher outlet pipe of typical temperature, reduce the easily coking rate of the outlet pipe of coking, use, Load Distribution between inlet tube is science more, rationally, use, the temperature difference and outlet pipe thermal expansion amount between the inlet tube wall, the creep elongation amount reduces, improve the whole strained condition of boiler tube significantly, effectively prevent crooking of the tubes distortion and damage.
3. compared with prior art, pyrolyzer of the present invention under pyrolyzer radiant section furnace height degree and the essentially identical condition of width, can reduce the length of body of heater because of reaction tubes arrangement architecture compact and reasonable significantly, so volume is little, floor space is few.Simultaneously, with traditional pyrolyzer ratio of identical scale, though pyrolyzer radiator tube line number of the present invention increases to some extent, the total consumption of radiator tube can't therefore and obviously increase, or does not increase at all; Even also may reduce to some extent in many cases.This is that heat load distribution is reasonable because of simple in structure, the arrangement science of pyrolyzer reaction tubes of the present invention, and whole heat-transfer effect is good, the efficient height.Therefore, pyrolyzer of the present invention can be reduced investment outlay significantly, reduces cost.Especially for building large-scale pyrolyzer or being used for changing, extending of performance index expanded production capacity, improved to existing pyrolyzer, effect will be particularly remarkable.Aspect use properties, pyrolyzer of the present invention distributes because of having than rational temperature, so coking rate is low, running period is long, the ethylene selectivity height, and process cost and production cost are low.But pyrolyzer flexible design of the present invention is for adapting to plurality of raw materials.
4. specific implementation method of the present invention has very big handiness and diversity, therefore has adaptability and very strong practicality widely.For example, when design, can be at different design requirements, easily and flexibly two adjacent tube center distancees in line-spacing, the row are selected to adjust with port number, reaction tubes material and the cross-sectional shape etc. of the ratio of caliber, every journey reaction tubes and optimize, by inlet tube is carried out choose reasonable to the shielding degree of outlet pipe, to adapt to different design requirementss.Measures such as the technology of can also be at an easy rate conducting heat with some known reinforcement reaction tubess, coking inhibition technology combine, for these technology making full use of on pyrolyzer opened up new more broad approach.
5. the present invention has breakthrough.The arrangement of pyrolyzer reaction tubes, from the delegation of prior art and two row, to triplex row of the present invention (or more than), it changes the just simple increase of line number of part, but a qualitative leap on the pyrolyzer economic technology performance is a notional important breakthrough.Traditional concept is thought: radiation furnace, particularly pyrolyzer, and between two radiating surfaces, reaction tubes can only be arranged as a row or two rows; It is infeasible surpassing two rows (more than for example three rows or three arrange) technical, is irrational economically, and it then is absurd being used for engineering practice.Traditional concept is also thought: covering mutually between the reaction tubes all does harm rather than good, should avoid as far as possible.The present invention has broken this traditional prejudice, the technical scheme that has proposed to arrange at least the pyrolyzer of triplex row boiler tube between two radiating surfaces.Proved the technical advanced person of this scheme, reasonable economically, practical on the engineering.Pointed out one beyond the question and the uncared-for for a long time fact: pyrolyzer reaction tubes inlet tube is to the covering to a certain degree of outlet pipe, and is not only harmless, and useful sometimes.Thereby be the particularly development of large-scale pyrolyzer of modern pyrolyzer, opened up more wide space.
Description of drawings
Fig. 1 is a pyrolyzer rough schematic of the present invention
Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 are the synoptic diagram of pyrolyzer embodiment one of the present invention.Wherein:
Fig. 2 is pyrolyzer embodiment one radiation section facade view of the present invention, i.e. the A-A sectional view of Fig. 3.
Fig. 3 is pyrolyzer embodiment one radiation section horizontal cross-sectional view of the present invention, i.e. the B-B sectional view of Fig. 2.
Fig. 4 is pyrolyzer embodiment one radiation section side sectional view of the present invention, i.e. the C-C sectional view of Fig. 2.
Fig. 5 is unit radiant coil (reaction tubes) structure iron of pyrolyzer embodiment one of the present invention.
Fig. 6 is the reaction tubes floor plan synoptic diagram that the another kind of triplex row of pyrolyzer embodiment one of the present invention is mixed type of array.
Fig. 7 is the reaction tubes floor plan synoptic diagram of pyrolyzer embodiment two of the present invention.
Fig. 8, Fig. 9, Figure 10 is the rough schematic view of pyrolyzer embodiment three of the present invention.Wherein:
Fig. 8 is the radiation section facade view of pyrolyzer embodiment three of the present invention, i.e. the D-D sectional view of Fig. 9.
Fig. 9 is the radiation section horizontal cross-sectional view of pyrolyzer embodiment three of the present invention, i.e. the E-E sectional view of Fig. 8.
Figure 10 is the radiation section side sectional view of pyrolyzer embodiment three of the present invention, i.e. the F-F sectional view of Fig. 8.
Figure 11 is the radiation section reaction tubes in-line arrangement mode floor plan synoptic diagram of pyrolyzer embodiment three of the present invention.
Figure 12 is the radiation section reaction tubes fork row mode floor plan synoptic diagram of pyrolyzer embodiment three of the present invention.
Figure 13 is the 4th an embodiment radiation section floor plan synoptic diagram of pyrolyzer of the present invention.
The figure number explanation:
In above each figure
1. inlet tube 2. outlet pipes 3. radiation section body of heater headwalls 4. radiant section furnace side walls
5.5 ' burner, 6. horizontal symmetrical center line 7. pipe connectings of a pair of radiating surface
8. the radiation section body of heater center line of elbow 9. guide pipes 10. embodiment four
11. the inlet manifold of flame radiaton face 12. radiation section bodies of heater 13. reaction tubess
14. the outlet header 16. convection zone bodies of heater of rapid-cooling heat exchanger 15. reaction tubess
Embodiment
Embodiment one.
Referring to Fig. 1, be the simple structure synoptic diagram of pyrolyzer of the present invention, wherein, comprising: radiation section body of heater 12; Be arranged on the intravital burner 5,5 ' of embarking on journey and arranging of this stove; At least constitute a flame radiaton face 11 by row's said burner burning, every stove comprises two above-mentioned flame radiaton faces 11 at least; Be vertically set on above-mentioned per two flame radiaton faces 11 intermediary radiation section reaction boiler tubes 1,2; In order to organic raw material is infeeded the inlet manifold 13 of above-mentioned reaction tubes; Be arranged on the rapid-cooling heat exchanger 14 of above-mentioned body of heater outside, the reaction tubes outlet header 15 that is connected with above-mentioned rapid-cooling heat exchanger 14 in order to outlet with a plurality of above-mentioned reaction tubess.
Fig. 2, Fig. 3, Fig. 4, Fig. 5 show a preferred embodiment reference drawing of pyrolyzer of the present invention.In this example, reaction tubes is two journey adapter bonnets, and outlet pipe and inlet tube are single passage, referring to Fig. 5.The setting that is staggered of triplex row boiler tube, wherein, all outlet ports pipe 2 is arranged in the delegation, and this row is positioned on the horizontal central line 6 of two radiating surfaces 11 that are parallel to radiation section side wall 4.In this example, described horizontal central line 6 overlaps (referring to Fig. 3) with radiation section body of heater vertical equity center line.Inlet tube 1 is divided into two lines, and lays respectively at outlet pipe row's both sides, between a relief outlet pipe 2 and the row's burner 5.Two row's burners were listed in the both sides of triplex row boiler tube in 5 minutes, near radiation section side wall 4.Form the reaction tubes triplex row and arrange two-sided radiating layout.Burner 5 can be in radiation section body of heater 12 bottoms, also can be on side wall 4 inwall, and the burner of this moment is radiant wall burner 5 ' (referring to Fig. 1), also can be their certain reasonable combination.Among the figure, the outward appearance pattern of coil pipe is " H " type, connects by elbow 8 and pipe connecting 7 between the pipe of entry and exit.So-called outward appearance pattern is meant the external form that comprises guide pipe 9, rather than internal fluid passageway.The pattern of coil pipe also can be " U " type or other patterns, does not illustrate pattern in this example and be not only limited to.In this example, the ratio of each adjacent two inlet tube width between centers and inlet tube external diameter can be got much larger than prior art pyrolyzer analog value in the row, at this moment, can guarantee that still radiator tube arranges very compact on the whole.As an example, the desirable 300～400mm of adjacent two inlet tube width between centers in the row, two then corresponding outlet tube center distancees are 150～200mm.When the inlet tube external diameter reaches 75mm, in the row ratio of each adjacent two inlet tube width between centers and inlet tube external diameter still can 〉=4.This is that existing inlet tube two row permutation technology pyrolyzer are difficult to realize.To improving circumferentially the being heated evenly property of inlet tube, the heat flux that improves inlet tube is favourable, and inlet tube is controlled in the proper range the shield coverage of outlet pipe on the one hand for this.Certainly, according to the present invention, choosing of described tube center distance is not limited to the above-mentioned numerical range that exemplifies.All pipe connectings 7 all are on the same horizontal plane, and the space availability ratio height is installed, overhauled easy construction, and the possibility that interferes with each other during operation, collides, covers is little.
Fig. 6 is the another kind of reaction tubes type of array floor map of present embodiment one.It is basic identical when effect is arranged with mistake.
Embodiment two
Referring to Fig. 7, in this example, reaction tubes still is two journey adapter bonnets, and the entry and exit pipe is single passage.This is the same with embodiment one.With the difference of embodiment one be: in this example, outlet pipe 2 is arranged in two row, and is arranged in the both sides of the horizontal central line 6 of described two flame radiaton faces symmetrically, and this two row departs from the certain distance of described center line 6.Consider that from being heated evenly property angle this distance should be as far as possible little.With embodiment one ratio, can have bigger spacing between each adjacent outlet pipe 2 of this example, be not easy to collide between mutually, also can be installations, overhaul and bring certain facility.In general, as long as this two row outlet pipe 2 is between two line entry pipes 1, distance between the two row outlet pipes 2 is less than the distance between the two line entry pipes 1, and the width between centers of adjacent two outlet pipes is identical with the width between centers of adjacent inlet tube in every every trade in every every trade.Just we can say,, but still can obviously be better than existing reaction tubes two row permutation technology schemes though the being heated evenly property of outlet pipe may be more less better than reaction tubes triplex row arrangement (as embodiment one).Otherwise beneficial effect is identical with embodiment one.This example is the embodiment that is arranged as four lines in a pair of radiating surface reaction tubes.
Embodiment three
Fig. 8, Fig. 9, Figure 10 is the rough schematic view of pyrolyzer embodiment three of the present invention.In this example, reaction tubes still is two journey adapter bonnets, but inlet tube 1 is a two channels, and outlet pipe 2 is a single passage, and the established technology fluid enters a continuous outlet pipe 2 through the inlet tube 1 of two parallel connections at bottom of furnace body.Between a pair of radiating surface 11, reaction tubes is arranged as triplex row, and outlet pipe 2 is positioned on the middle row, and inlet tube 1 is divided into two row, is positioned at the both sides that outlet pipe 2 is expert at.Reaction tubes can be that triplex row is staggered, and referring to Fig. 9, also can be in-line arrangement (referring to Figure 11) or fork row (referring to Figure 12).Wherein, the width between centers of adjacent two outlet pipes is identical with the width between centers of adjacent two inlet tubes in every every trade in every every trade.
Embodiment four
Figure 13 is the 4th an embodiment radiation section floor plan synoptic diagram of pyrolyzer of the present invention.This example comes down to a combination of the foregoing description one.As everyone knows, this combination can make body of heater length reduce, and helps realizing the maximization of pyrolyzer.But increase the body of heater width.A stove has two pairs of totally four flame radiaton face 11, six row's radioreaction pipes in this example, and each flame radiaton face 11 is by a plurality of base burning device flame formation of arranging along straight line.Certainly, the logarithm of flame radiaton face 11 can also further increase, and radiator tube is always arranged number and also wanted corresponding increase.Principle is: at least three row's radiator tubes are arranged between two flame radiaton faces 11 of every pair, and outlet pipe 2 comes middle row, and 1 minute two row of inlet tube comes outlet pipe 2 both sides.In like manner, the foregoing description two, three also can similarly make up.Obviously, they all are simple transformation of the present invention.
Abovely the present invention has been done comparatively specific description in conjunction with several embodiment.Obviously, embodiments of the present invention are not limited to described embodiment.
Claims (6)
1. the pyrolyzer in order to cracking organic raw material hydro carbons comprises: radiation section body of heater (12); Be arranged on the intravital burner (5,5 ') of embarking on journey and arranging of above-mentioned stove; At least constitute a flame radiaton face (11) by row's said burner burning, every stove comprises two above-mentioned flame radiaton faces at least; Be vertically set on above-mentioned per two radiating surface intermediary radiation section reaction boiler tubes; In order to organic raw material is infeeded the inlet manifold (15) of above-mentioned reaction tubes; Be arranged on the reaction tubes outlet header (15) that the rapid-cooling heat exchanger (14) of above-mentioned body of heater outside is connected with above-mentioned rapid-cooling heat exchanger (14) in order to the outlet with a plurality of above-mentioned reaction tubess,
It is characterized in that:
Between intravital per two the flame radiaton faces of described radiant section furnace (11), the radiation section reaction boiler tube is arranged to triplex row at least along the straight line parallel with the horizontal symmetrical center line (6) of described two radiating surfaces, wherein, outlet pipe (2) is arranged in delegation at least, be positioned between the two line entry pipes (1), every line entry pipe (1) is positioned between a delegation's outlet pipe (2) and the flame radiaton face (11).
2. according to the described a kind of pyrolyzer of claim 1 in order to cracking organic raw material hydro carbons, it is characterized in that, inlet tube (1) is single passage with outlet pipe (2), between two flame radiaton faces, the radiation section reaction boiler tube adopts the wrong row's form of triplex row to be provided with, wherein, the width between centers of two-phase neighbor entry pipe is 4-7 with the scope of the external diameter ratio of inlet tube.
3. according to the described a kind of pyrolyzer of claim 1 in order to cracking organic raw material hydro carbons, it is characterized in that, inlet tube (1) is single passage with outlet pipe (2), between two flame radiaton faces, the radiation section reaction boiler tube adopts triplex row to mix the spread pattern setting, wherein, the width between centers of two-phase neighbor entry pipe is 4-7 with the scope of the external diameter ratio of inlet tube.
4. according to the described a kind of pyrolyzer of claim 1 in order to cracking organic raw material hydro carbons, it is characterized in that, inlet tube (1) is single passage with outlet pipe (2), between two flame radiaton faces (11), the radiation section reaction boiler tube can adopt the wrong row of four lines, any form of in-line arrangement is provided with, and the width between centers of adjacent two outlet pipes (2) is identical with the width between centers of adjacent two inlet tubes (1) in every every trade in wherein every every trade.
5. according to the described a kind of pyrolyzer of claim 1 in order to cracking organic raw material hydro carbons, it is characterized in that, inlet tube is a two channels, outlet pipe is a single passage, and between two flame radiaton faces (11), the radiation section reaction boiler tube can be selected the wrong row of triplex row for use, in-line arrangement, any form of fork row is provided with, and wherein, the width between centers of adjacent two outlet pipes (2) is identical with the width between centers of adjacent two inlet tubes (1) in every every trade in every every trade.
6. according to the described a kind of pyrolyzer of claim 1, it is characterized in that outlet pipe (2) is a single passage in order to cracking organic raw material hydro carbons, in radiation section, the radiation section reaction boiler tube is arranged to six row, and between each was to flame radiaton face (11), every triplex row reaction boiler tube was one group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02158969 CN1271172C (en) | 2002-12-31 | 2002-12-31 | Cracking furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02158969 CN1271172C (en) | 2002-12-31 | 2002-12-31 | Cracking furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1511926A true CN1511926A (en) | 2004-07-14 |
| CN1271172C CN1271172C (en) | 2006-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02158969 Expired - Fee Related CN1271172C (en) | 2002-12-31 | 2002-12-31 | Cracking furnace |
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| CN (1) | CN1271172C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338182C (en) * | 2004-10-29 | 2007-09-19 | 中国石油化工股份有限公司 | Cracking furnace of boiler tube with one-way reducing diameter |
| CN102050696A (en) * | 2009-10-27 | 2011-05-11 | 中国石油化工股份有限公司 | Cracking furnace for cracking hydrocarbon steam to prepare ethylene |
| CN101743439B (en) * | 2007-05-18 | 2012-07-18 | 鲁姆斯科技公司 | Heater and method of operation |
| CN106635123A (en) * | 2015-10-29 | 2017-05-10 | 中国石油化工股份有限公司 | Multi-pass furnace tubes cracking furnace by oxygen-rich combustion |
| CN107532821A (en) * | 2015-06-30 | 2018-01-02 | 环球油品公司 | Alternative coil pipe for combustion-type process heaters |
-
2002
- 2002-12-31 CN CN 02158969 patent/CN1271172C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338182C (en) * | 2004-10-29 | 2007-09-19 | 中国石油化工股份有限公司 | Cracking furnace of boiler tube with one-way reducing diameter |
| CN101743439B (en) * | 2007-05-18 | 2012-07-18 | 鲁姆斯科技公司 | Heater and method of operation |
| CN102050696A (en) * | 2009-10-27 | 2011-05-11 | 中国石油化工股份有限公司 | Cracking furnace for cracking hydrocarbon steam to prepare ethylene |
| CN102050696B (en) * | 2009-10-27 | 2014-05-21 | 中国石油化工股份有限公司 | Cracking furnace for cracking hydrocarbon steam to prepare ethylene |
| CN107532821A (en) * | 2015-06-30 | 2018-01-02 | 环球油品公司 | Alternative coil pipe for combustion-type process heaters |
| CN106635123A (en) * | 2015-10-29 | 2017-05-10 | 中国石油化工股份有限公司 | Multi-pass furnace tubes cracking furnace by oxygen-rich combustion |
| CN106635123B (en) * | 2015-10-29 | 2018-11-30 | 中国石油化工股份有限公司 | Using the pyrolysis furnace of the multi-way boiler tube of oxygen-enriched combusting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1271172C (en) | 2006-08-23 |
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