CN102886231B - Fully-radial isothermal CO (carbon monoxide) conversion furnace - Google Patents
Fully-radial isothermal CO (carbon monoxide) conversion furnace Download PDFInfo
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- CN102886231B CN102886231B CN201210378026.0A CN201210378026A CN102886231B CN 102886231 B CN102886231 B CN 102886231B CN 201210378026 A CN201210378026 A CN 201210378026A CN 102886231 B CN102886231 B CN 102886231B
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Abstract
The invention relates to a fully-radial isothermal CO (carbon monoxide) conversion furnace, comprising a furnace body, a heat exchange tube bundle arranged in the furnace body, a gas distributor, a gas collector, an upper tube plate and a lower tube plate. The fully-radial isothermal CO conversion furnace is characterized in that the furnace body comprises an upper section, a middle section and a lower section which are detachably connected together, and a conversion gas outlet is further formed on the top of the furnace body; the lower end of the gas collector is connected with the lower tube plate, a connection hole is formed on the upper tube plate, and the upper end of the gas collector penetrates through the connection hole and is detachably connected with a gas outlet tube; the other end of the gas outlet tube penetrates through the conversion gas outlet and is exposed out of the furnace body; and an annular upper sealing head is hermetically connected above the upper tube plate, and the lower tube plate is hermetically connected with the furnace body and located between the middle section and the lower section. Compared with the prior art, the reactor of the fully-radial isothermal CO conversion furnace disclosed by the invention is simple in structure, convenient in overhaul and maintenance, less in equipment investment, and strong in controllability.
Description
Technical field
The present invention relates to chemical industry equipment field, specifically refer to that a kind of CO overall diameter is to isothermal change furnace.
Background technology
In the at present domestic high concentration CO shift process design process generating at coal gasification, change furnace all adopts adiabatic reactor.Because CO content in crude synthesis gas is high, transformationreation is simultaneously again strong exothermic process, and therefore, converter unit all adopts many heat insulation furnace series connection to carry out CO transformationreation in flow setting, removes reaction heat between stove.This has also caused, and traditional high concentration CO shift process is complicated, reactor number of units is many, system pressure drop is large, equipment investment is high, change furnace temperature is controlled difficulty, and easy overtemperature when catalyst vulcanization and normal operation, exists potential safety hazard; Adiabatic temperature rise has suppressed CO molecular balance, causes the series of problems such as separate unit change furnace CO low conversion rate.
The variety of issue existing in high concentration CO conversion process based on adiabatic change furnace, some engineering companies of recent year are also studied and develop congruence temperature change furnace.The operation principle of isothermal change furnace is simpler, in isothermal change furnace, inserts heat exchange pipeline, while there is CO transformationreation in stove, by the mode of boiler feedwater byproduct steam, removes reaction heat, so just can keep reaction bed temperature substantially constant.Compare adiabatic change furnace and can save the energy recovery equipment between stove, simplified technological process, reduced equipment investment.Although isothermal change furnace operation principle is simple, but in engineering design and device actual moving process, that the structure that constant-temperature oven wants to remove in time reaction heat, stove is wanted is simple, the catalyst change of stove and checking maintenance is convenient and swift, conversion gas distributes wants evenly, resolve in stove thermal stress issues also very crucial and important simultaneously.
Notification number be CN101721956A Chinese patent application a kind of < < isothermal low-temperature CO shift reactor > >, in this isothermal reactor, for removing the boiler water of reaction heat, from heat exchange pipeline top, enter, the steam producing is also to shift out with self-evaporating form from heat exchange pipeline top, this makes the mobility of boiler water very poor, by boiler water, removing the limited in one's ability of reaction heat, still there is the risk of overtemperature in reactor.
It is overheated that the saturated middle pressure steam that this isothermal reactor produces self has carried out, in through engineering approaches process, this design is difficult to implement, reason is that the specific heat of saturated middle pressure steam is very little, in the process that becomes overheated middle pressure steam by saturated middle pressure steam in isothermal reactor, the heat absorbing seldom, can not effectively remove transformationreation heat, be certain to cause isothermal reactor local overheating, burn out the transformation catalyst at local overheating place.
This isothermal reactor adopts totally-enclosed pattern, can only in equipment Manufacture Process, carry out the filling of catalyst, and the handling after catalysqt deactivation are changed and cannot be realized, if heat exchanger tube breaks in addition, also cannot repair and shutoff.
This isothermal inside reactor is divided into steam chest and hydroecium, and heat exchanger tube and inverted-loop tube are arranged at bottom, and complex structure is manufactured difficulty of processing large, and cost is high.
In this isothermal reactor, CO transformationreation occurs in more than 250 ℃, and inner cylindrical shell top and the bottom, heat-exchanging tube bundle place are all welded to connect with the outside cylindrical shell of reactor, and at high temperature in stove, thermal stress cannot discharge, and can cause inner cylindrical shell flexural deformation.
Summary of the invention
Technical problem to be solved by this invention is the situation for prior art, a kind of CO overall diameter is proposed to isothermal change furnace, it utilizes recirculated water to remove continuously, rapidly the reaction heat in high concentration CO transformationreation process, reactor can be maintained and under temperature constant state, carry out transformationreation, optimize simultaneously and simplify furnace binding pattern, for quick handling, replacing and the equipment checking maintenance of catalyst facilitates, also to solve the thermal stress release And Spread of Solute of reactor under worst hot case.
The present invention solves the problems of the technologies described above adopted technical scheme: this CO overall diameter, to isothermal change furnace, comprising:
Body of heater, closed container, the top of body of heater is provided with reaction gas entrance and inspection manhole, and the upper portion side wall of body of heater is provided with coolant outlet, and bottom of furnace body is provided with cooling water inlet;
Heat-exchanging tube bundle, is arranged in described body of heater, the many heat exchanger tubes that are parallel to each other, consists of;
Gas distributor, is arranged in described body of heater, and the gas entering in body of heater enters beds after gas distributor current-sharing;
Upper perforated plate and lower perforated plate, be connected to the upper/lower terminal of described gas distributor, which is provided with a plurality of pores, and the two ends of each heat exchanger tube are plugged in respectively in pore corresponding on upper and lower tube sheet;
Gas collector, for collecting reacted synthesis gas, is longitudinally arranged on described body of heater middle part;
It is characterized in that:
Described body of heater comprises epimere, stage casing and the hypomere being detachably connected, and the top of described body of heater is also provided with conversion gas outlet; The lower end of described gas collector connects described lower perforated plate, and described upper perforated plate is provided with connecting hole, and the upper end of described gas collector is through this connecting hole escape pipe that removably connects; The other end of this escape pipe exports and exposes to described body of heater through described conversion gas;
The top of described upper perforated plate is connected with annular upper cover, be tightly connected described body of heater between described stage casing and described hypomere of described lower perforated plate.
Preferably, between three sections of body of heater, all can connect by flange, to guarantee the dismounting of body of heater outside and the integral body extraction of inner tube bank.Body of heater can be supported on vertical placement on skirt.
In order to facilitate filling, the replacing of catalyst, described gas distributor can be combined by a plurality of segmentation pipe nipples that are detachably connected, and each segmentation is removably connected and formed by two semicircular cylinders again.
Further, distributing homogeneity when guaranteeing that gas enters beds, described in each, segmentation includes outer cylinder body and is set in the inner barrel in described outer cylinder body, the outer cylinder body formation urceolus that is detachably connected described in each, described in each, inner barrel is detachably connected to form and is set in the inner core in described urceolus, and described outer cylinder body and described inner barrel interval gapped.Inner barrel plays the effect of quadratic distribution to reaction gas.
Preferably, the density of the pore described in such scheme on inner core is greater than described urceolus, and the aperture of the pore on described inner core is less than or equal to 3mm.
Consider the settlement issues of catalyst in production process, described gas distributor is not offered pore near described upper perforated plate 100mm with interior position, with the reaction gas that prevents from causing because of catalyst sedimentation, refluxes and short circuit.
In order to reduce the flow resistance of cooling water, described coolant outlet has two, and correspondingly, the outlet pipe that connects described upper cover and two coolant outlets also has two.
Consider the thermal expansion of reacting furnace inner body, can on described outlet pipe, be provided with expansion joint; Described gas collector is positioned in the part of described upper cover and described body of heater cavity and is also provided with expansion joint, to solve internal-response entire system thermal expansion problem.
On the sidewall of described upper perforated plate, be interval with polylith locating piece, accordingly, the madial wall of described body of heater is provided with many group location-plates, and every group of location-plate comprises left and right spaced left location-plate and right location-plate, and described in each, locating piece is between the left and right location-plate of correspondence.Body of heater and built-in system make to mount and dismount more convenient by the mutual location of locating piece.
Described gas-collecting pipe part between upper lower perforated plate is provided with a plurality of pores evenly and at intervals, and preferably, collecting pipe is near not perforate in upper perforated plate bottom surface 100mm, to prevent that the catalyst sedimentation gas that induces reaction from refluxing and short circuit.
Consider the thermal expansion of gas collector, can on the upper surface of described lower perforated plate, be provided with adapter sleeve, the bottom of described gas collector is positioned in this adapter sleeve and is gapped with described upper perforated plate interval, and the localized heat that this gap can supplied gas collector part between upper lower perforated plate expands.
On two described outlet pipes He on gas collector outlet, expansion joint is set, to solve internal-response entire system thermal expansion problem.
This CO isothermal change furnace adopts overall diameter to Π type structure on the whole, on reaction gas is enterprising, go out, loading catalyst between heat exchanger tube, in pipe, walk cooling water, cooling water absorbs conversion heat, the requirement of strength shifting out according to reaction heat, cooling water circulation process can be that Natural Circulation can be also forced circulation, recirculated cooling water downstream can arrange drum byproduct steam recovery waste heat.By the controlled circulation water yield, maintain the constant of transformationreation temperature.
Compared with prior art, the present invention has following features:
1, the circulation by cooling water reaches and shifts out fast high concentration CO reaction heat, its process can be also forced circulation of Natural Circulation, by the controlled circulation water yield, reach the object of control change reaction temperature, coolant outlet can arrange drum byproduct steam, recovery waste heat, structure of reactor is simple, small investment, and controllability is strong.
2, cooling water outlet pipe, gas collector and body of heater all adopt flange to be connected, making outside body of heater is detachably epimere, stage casing and hypomere three parts, internal-response system can whole be extracted out, add that the sectionally smooth join design of gas distributor and quick handling that removable bolt structure is catalyst and the checking maintenance of post facility provide convenience.
3, take into full account high temperature stress operating mode, in two the gentle body collector of circulating cooling water out upper ends of internal-response system, be provided with expansion joint, solved the thermal expansion that internal-response entire system makes progress; At the bottom of gas-collecting pipe, location, sleeve gap, has solved the downward differential expansion of gas-collecting pipe, and this is conducive to the long-period stable operation of equipment and the prolongation in service life.
4, CO overall diameter adopts full radial structure to isothermal change furnace, and circulation area is large, and bed resistance is little, and pressure drop is little.Gas distributor adopts inside and outside barrel structure, to reaction gas quadratic distribution, make distribution of gas more even, be conducive to improve conversion ratio, simultaneously, take into full account catalyst sedimentation problem, at gas distributor top and gas-collecting pipe, near upper perforated plate place, be all reserved with not aperture area of 100mm, can prevent that the conversion gas that catalyst sedimentation causes from refluxing, short circuit.
5, the overall diameter that change furnace adopts is to Π type structure, on reaction gas is enterprising, go out, taking full advantage of radial reactor flow manifold static pressure raises along fluid flow direction, the feature that afflux runner static pressure streamwise reduces, be conducive to conversion gas being uniformly distributed and steady flow at beds, make reaction more stable, conversion efficiency is high.
6, the present invention adopts shell-and-tube reactor, between Catalyst packing heat exchanger tube, and reaction bed temperature, stable, the life-span is long, can increase CO conversion gas treating capacity by increasing gas distributor hop count mode, is conducive to the maximization of device; And utilize the feature that radial reactor resistance is little can improve air speed, increase conversion ratio, improve the production capacity of equipment.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of the embodiment of the present invention 1 assembly structure;
Fig. 2 is the enlarged drawing of position 32 in Fig. 1 of the present invention;
Fig. 3 is the floor map of location structure between upper perforated plate and inboard wall of furnace body in the embodiment of the present invention 1;
Fig. 4 is gas distributor structural representation in the embodiment of the present invention 1;
Fig. 5 be along A-A in Fig. 4 to cutaway view;
Fig. 6 is the floor map of annular seal head in the embodiment of the present invention 1;
Fig. 7 is the floor map that in the embodiment of the present invention 2, gas distributor is overlooked direction;
Fig. 8 be along B-B in Fig. 7 to cutaway view.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
Embodiment 1
As shown in Figures 1 to 6, this CO overall diameter comprises to isothermal change furnace:
Body of heater 1, comprises epimere 15, stage casing 12 and hypomere 11, and epimere 15 is for being welded with the ellipsoidal head of straight section, between epimere 15 and stage casing 12, all adopt flange to removably connect between stage casing 12 and hypomere 11.The end socket top of epimere 15 is provided with reaction gas entrance 16, conversion gas outlet 17 and top inspection manhole 18, its straight section sidewall is provided with two the circulating cooling water out 14A and the 14B that are arranged symmetrically with, hypomere 11 bottoms are provided with cooling water inlet 19, body of heater 1 bottom is seated on skirt 5, and skirt 5 is the base for supporting of this isothermal change furnace.
In body of heater, by the heat-exchanging tube bundle being comprised of many heat exchanger tubes 37, the middle part of heat-exchanging tube bundle is provided with a plurality of for supporting the support member 36 of heat-exchanging tube bundle.The two ends of each heat exchanger tube are plugged in respectively in pore corresponding on upper perforated plate 34 and lower perforated plate 31 and form heat-exchanging tube bundle, in the gap between each heat exchanger tube, are filled with catalyst.
Upper perforated plate 34 relies on bolt 39 to connect to form by two tube sheet 34A and 34B, is provided with pad 310 sealings between 34A and 34B.Upper perforated plate relies on four locating pieces 352 that are welded on upper perforated plate 34B and is welded on four groups of location-plates, the 351 cooperation radial locations in equipment barrel, guarantees axial displacement.Every group of location-plate comprises the spaced left location-plate in left and right and right location-plate, and locating piece is between the left and right location-plate of correspondence.Upper perforated plate 34 upper surfaces are provided with annular seal head 33, the middle part of upper perforated plate is provided with the connecting hole that supplied gas collector 2 passes, annular seal head top is provided with two and is arranged symmetrically with and is connected with above-mentioned circulating cooling water out 14A and 14B respectively cooling water outlet pipe 13A and 13B, two outlet pipe vertical portions are equipped with expansion joint to eliminate the reacting furnace stress that thermal expansion was produced that makes progress, the horizontal pipeline section of two outlet pipes is flange releasable connection, with facilitate outside body of heater and built-in system detachable from.Lower perforated plate 31, between stage casing 12 and hypomere 11, and is provided with gasket seal between the end face connecting, together with epimere 12, lower perforated plate 31 are bolted with hypomere 11.
Heat-exchanging tube bundle outside is by gas distributor 4 parcels of tubular, gas distributor 4 is connected to form by the gas distributor pipe nipple bolt of several sections of same structures, every section of distributor includes inner barrel 45 and the outer cylinder body 44 that length is 500mm, and inside and outside cylindrical shell forms by two semicircular cylinders, semicircular cylinder end is welded with two groups of vertical connecting plates 43, and two semicircular cylindrical shell bolts are formed to columniform cylindrical shell together; After each section of inner barrel connects, form inner core, after each section of outer cylinder body connects, form sheathed urceolus outer tube.On inner barrel 45 and outer cylinder body 44, be evenly equipped with respectively circular pore as reactant gas passage, inner core is as gas quadratic distribution device, its perforate density is greater than urceolus and aperture is not more than 3mm, the top of inner core and urceolus and bottom are equipped with two and half ring flat-plates 41, half ring flat-plate split position is consistent with inner core and urceolus, and weld together with vertical connecting plate 43, half ring flat-plate 41 ends are provided with eight journal stirrups 42, for bolt and the location between upper-lower section gas distributor, the upper end of epimere distributor relies on locating ring 311 location with upper perforated plate 34 welding, the cannelure location that lower perforated plate 31 is opened is put in the lower end of hypomere cylindrical shell, simultaneously, in the one section of gas distributor in the top, urceolus is apart from not offering pore within upper perforated plate 100mm height and position, to prevent the catalyst sedimentation road of breathing hard that induces reaction.The segmentation bolt releasable connection design of gas distributor, can effectively improve the handling of catalyst and change efficiency.
Gas collector 2, its upper end connects conversion gas outlet 17 through the connecting hole on upper perforated plate 34 and by flange, and gas collector boxing sealing in the connecting hole of upper perforated plate 34 is fixing.Gas collector has evenly and at intervals the strip gas collection hole that width is less than 3mm on the sidewall of part between upper perforated plate 34 and lower perforated plate 31, equally, for the reaction gas that prevents from causing because of catalyst sedimentation refluxes, short circuit, collecting pipe near upper perforated plate 34 lower surfaces below part stay the not perforate of region of 100mm height.Collecting pipe bottom welding has circular cover 21, circular cover outside is provided with the collecting pipe abutment sleeve 22 being welded on lower perforated plate 31, between sleeve 22 and described cover plate 21, stay 2mm gap, 31 of cover plate and lower perforated plates are provided with 30mm gap to solve the downward localized heat expansion issues of gas-collecting pipe 2.The pipeline section that the outlet of described gas collector and conversion gas is connected is provided with expansion joint, with together with expansion joint on circulating water outlet pipeline section 13A, 13B, has solved the overall thermal expansion issues that built-in system makes progress.
Embodiment 2
As shown in Figure 7, Figure 8: to the gas distributor in isothermal change furnace, the distributor bolt by several sections of same structures forms this CO overall diameter, every section of distributor comprises inner core 65 and urceolus 64, the triangular fin interspace that inner core 65 is 500mm by length rearranges, urceolus 64 is comprised of two semicircular cylinders, and semicircle urceolus two ends are welded with two groups of vertical connecting plates 53 semicircular cylinder bolt is formed to cylindrical drum together.On urceolus 64, open uniform circular hole, inner core 65 is as gas quadratic distribution device, its triangular fin interspace is less than urceolus aperture and is not more than 3mm, the upper and lower two ends of triangle rib of inner core 65 and urceolus 64 tops and bottom welding are on two and half ring flat-plates 61, half ring flat-plate split position is consistent with urceolus, and weld together with vertical connecting plate 63, half ring flat-plate 61 ends are provided with eight journal stirrups 62, for bolt and the location between upper-lower section gas distributor, epimere gas distributor upper end relies on locating ring 311 location with upper perforated plate 34 welding, the cannelure location that lower perforated plate 31 is opened is put in hypomere gas distributor lower end.Meanwhile, topmost the urceolus of one section of gas distributor and upper perforated plate 34 contact positions stay 100mm highly not perforate to prevent the catalyst sedimentation road of breathing hard that induces reaction.
All the other contents are identical with example 1.
On be interval with polylith locating piece, accordingly, the madial wall of described body of heater is provided with many group location-plates, every group of location-plate comprises left and right spaced left location-plate and right location-plate, described in each, locating piece is between the left and right location-plate of correspondence.
9, CO overall diameter according to claim 8, to isothermal change furnace, is characterized in that the not perforate in close upper perforated plate bottom surface 100mm of described gas-collecting pipe.
10, CO overall diameter according to claim 9, to isothermal change furnace, is characterized in that the upper surface of described lower perforated plate is provided with adapter sleeve, and it is interior and gapped with the upper surface interval of described lower perforated plate that the bottom of described gas collector is positioned at this adapter sleeve.
Claims (10)
1. CO overall diameter, to an isothermal change furnace, comprising:
Body of heater, closed container, the top of body of heater is provided with reaction gas entrance and inspection manhole, and the upper portion side wall of body of heater is provided with coolant outlet, and bottom of furnace body is provided with cooling water inlet;
Heat-exchanging tube bundle, is arranged in described body of heater, the many heat exchanger tubes that are parallel to each other, consists of;
Gas distributor, is arranged in described body of heater, and the gas entering in body of heater enters beds after gas distributor current-sharing;
Upper perforated plate and lower perforated plate, be connected to the upper/lower terminal of described gas distributor, which is provided with a plurality of pores, and the two ends of each heat exchanger tube are plugged in respectively in pore corresponding on upper and lower tube sheet;
Gas collector, for collecting reacted synthesis gas, is longitudinally arranged on described body of heater middle part;
It is characterized in that:
Described body of heater comprises epimere, stage casing and the hypomere being detachably connected, and the top of described body of heater is also provided with conversion gas outlet; The lower end of described gas collector connects described lower perforated plate, and described upper perforated plate is provided with connecting hole, and the upper end of described gas collector is through this connecting hole escape pipe that removably connects; The other end of this escape pipe exports and exposes to described body of heater through described conversion gas;
The top of the described upper perforated plate annular upper cover that is tightly connected, be tightly connected described body of heater between described stage casing and described hypomere of described lower perforated plate.
2. CO overall diameter according to claim 1, to isothermal change furnace, is characterized in that described gas distributor comprises a plurality of segmentations that are detachably connected, and each segmentation has again two semicircular cylinders formation that removably connects.
3. CO overall diameter according to claim 2 is to isothermal change furnace, it is characterized in that segmentation includes outer cylinder body and is set in the inner barrel in described outer cylinder body described in each, the outer cylinder body formation urceolus that is detachably connected described in each, described in each, inner barrel is detachably connected to form and is set in the inner core in described urceolus, and described outer cylinder body and described inner barrel interval gapped.
4. CO overall diameter according to claim 3 is to isothermal change furnace, and the density that it is characterized in that the pore on described inner core is greater than described urceolus, and the aperture of the pore on described endoporus is less than or equal to 3mm.
5. CO overall diameter according to claim 2 is to isothermal change furnace, it is characterized in that described gas distributor do not offer pore near described upper perforated plate 100mm with interior position.
According to the CO overall diameter described in the arbitrary claim of claim 1 to 5 to isothermal change furnace, it is characterized in that described coolant outlet has two, the outlet pipe that connects described upper cover and two coolant outlets also has two.
7. CO overall diameter according to claim 6, to isothermal change furnace, is characterized in that described outlet pipe is provided with expansion joint; Described gas collector is positioned in the part of described upper cover and described body of heater cavity and is also provided with expansion joint.
8. CO overall diameter according to claim 7 is to isothermal change furnace, it is characterized in that being interval with polylith locating piece on the sidewall of described upper perforated plate, accordingly, the madial wall of described body of heater is provided with many group location-plates, every group of location-plate comprises left and right spaced left location-plate and right location-plate, and described in each, locating piece is between the left and right location-plate of correspondence.
9. CO overall diameter according to claim 8, to isothermal change furnace, is characterized in that the not perforate in close upper perforated plate bottom surface 100mm of described gas-collecting pipe.
10. CO overall diameter according to claim 9, to isothermal change furnace, is characterized in that the upper surface of described lower perforated plate is provided with adapter sleeve, and it is interior and gapped with the upper surface interval of described lower perforated plate that the bottom of described gas collector is positioned at this adapter sleeve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210378026.0A CN102886231B (en) | 2012-10-08 | 2012-10-08 | Fully-radial isothermal CO (carbon monoxide) conversion furnace |
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| CN201210378026.0A CN102886231B (en) | 2012-10-08 | 2012-10-08 | Fully-radial isothermal CO (carbon monoxide) conversion furnace |
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| CN102886231B true CN102886231B (en) | 2014-10-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105561889A (en) * | 2014-10-23 | 2016-05-11 | 新煤化工设计院（上海）有限公司 | Radial flow by-product steam isothermal shift converter |
| CN105582855A (en) * | 2014-10-23 | 2016-05-18 | 新煤化工设计院（上海）有限公司 | Radial-flow uniform-temperature methanation furnace with byproduct steam |
| CN108927083A (en) * | 2018-07-19 | 2018-12-04 | 湖南安淳高新技术有限公司 | Reactor |
| CN109279573B (en) * | 2018-09-30 | 2022-03-22 | 中石化宁波工程有限公司 | Isothermal transformation process matched with coal water slurry gasification |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6814944B1 (en) * | 1999-12-28 | 2004-11-09 | Daikin Industries, Ltd. | Modifying device |
| CN102059078A (en) * | 2010-11-19 | 2011-05-18 | 北京航天万源煤化工工程技术有限公司 | Isothermal radial converter |
| CN202876770U (en) * | 2012-10-08 | 2013-04-17 | 中国石油化工集团公司 | CO total-radial isothermal transformation furnace |
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2012
- 2012-10-08 CN CN201210378026.0A patent/CN102886231B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6814944B1 (en) * | 1999-12-28 | 2004-11-09 | Daikin Industries, Ltd. | Modifying device |
| CN102059078A (en) * | 2010-11-19 | 2011-05-18 | 北京航天万源煤化工工程技术有限公司 | Isothermal radial converter |
| CN202876770U (en) * | 2012-10-08 | 2013-04-17 | 中国石油化工集团公司 | CO total-radial isothermal transformation furnace |
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