CN205635499U - Take reformation heating furnace of flue heat ladder compensation - Google Patents
Take reformation heating furnace of flue heat ladder compensation Download PDFInfo
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- CN205635499U CN205635499U CN201620376141.8U CN201620376141U CN205635499U CN 205635499 U CN205635499 U CN 205635499U CN 201620376141 U CN201620376141 U CN 201620376141U CN 205635499 U CN205635499 U CN 205635499U
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Abstract
The utility model relates to a take reformation heating furnace of flue heat ladder compensation, the reformation heating furnace mainly comprises radiation chamber, convection chamber, flue and after burning device, and after flue gas follow radiation chamber came out to get into convection chamber, the unit of needs heating was carried through the flue at convection chamber top to the directness, furthermore, convection chamber also can cancel, sets up the flue at the radiation chamber top, and the flue gas comes out the direct flue through connecting the radiation chamber top in back from the radiation chamber and carries the heating unit, can not satisfy the heating or during the heat transfer demand when the flue -gas temperature, through setting up the after burning device on convection chamber or flue, heat the flue gas, guarantee that the flue -gas temperature meets the demands. The exhaust -heat boiler of common setting at the convection zone has been cancelled to this reformation heating furnace to the waste heat of make full use of flue gas has that the investment is little, the system is simple, the energy consumption is low and efficient characteristics.
Description
Technical field
This utility model belongs to petrochemical industry, is specifically related to a kind of reforming furnace being carried out heat step compensation by flue.
Background technology
Reformation is the technical process making hydrocarbon molecules be rearranged into recruit's structure in petroleum refining process, and i.e. under the effect of catalyst, cycloalkane becomes aromatic hydrocarbons or isoparaffin, simultaneously by-product hydrogen partial with alkane transformations.After raw material enters device, first have to be processed through pretreatment system, remove harmful magazins' layout and go out the acceptable material needed for reforming, subsequently into reforming reaction system.Because reforming reaction is the endothermic reaction, its required heat is provided by adding reforming furnace.
The modular design of reforming furnace is that four heating furnaces are merged into a large-scale gate-type heating furnace, and centre wall with flues is separated out four radiation chambers, to avoid temperature to interfere；The boiler tube of each radiation chamber is multi-channel parallel, the gateway of each arm with stove outside large set pipe be connected, the high-temperature flue gas of radiation chamber enters a public convection section；Convection section is provided with waste heat boiler, reclaims the heat from radiation chamber high-temperature flue gas out, produce middle pressure steam.Owing in device, steam consumption is less, a large amount of steam are outer defeated, i.e. use fuel gas producing steam, less economical；Meanwhile, reformer needs the raw materials technology of heating in also needing to arrange special heating furnace heating pre-hydrotreating reaction charging, the charging of other reboiling tower and other device, heating furnace quantity is many, and construction investment is big.
At present, have other raw materials technology and a combustion air of the flue gas and the auxiliary oven combined heat reformer that utilize reforming reaction charging heating furnace radiation chamber to discharge, but this technology to there is heating furnace quantity the most more, construction investment is big, system complex, commercial Application difficulty is big.Further, since limited by corrosion of sulfuric acid at dew point problem, exhaust gas temperature is higher, and thermal efficiency of heating furnace is low, and waste of fuel is serious.To this end, develop a kind of high-efficiency novel reforming furnace system meeting reforming process requirement there is important economic and social benefit.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, it is provided that the reforming furnace of a kind of band flue heat step compensation, and this reforming furnace has the advantages that investment is little, system is simple, energy consumption is low and efficiency is high.
A kind of technical scheme of the present utility model is:
A kind of band flue heat step compensation reforming furnace, including radiation chamber, convection cell, combustion-compensating device and flue, is not provided with waste heat boiler, and described radiation chamber connects described convection cell, and convection cell connects described heating unit by described flue；Flue gas enters convection cell the most afterwards from radiation chamber, then is fed directly to heating unit by flue；Described combustion-compensating device is arranged in convection cell and/or flue.Described heating unit is raw materials technology heat exchange unit, combustion air heat exchange unit or the fuel gas heat exchange unit etc. that this device needs heating.When flue-gas temperature can not meet heating or heat exchange demand, by being arranged on the combustion-compensating device on convection cell or flue, flue gas is heated, it is ensured that flue-gas temperature meets requirement.
Preferably, described flue may be provided on the top of convection cell, side wall or headwall.
Preferably, described combustion-compensating device may be provided at the side wall in convection cell, headwall or tip position.
This utility model another kind technical scheme is:
The reforming furnace of a kind of band flue heat step compensation, including radiation chamber, combustion-compensating device and flue, is not provided with waste heat boiler, and described radiation chamber connects described heating unit by described flue；Flue gas is fed directly to heating unit by flue the most afterwards from radiation chamber；Described combustion-compensating device is arranged in flue, can be arranged on the correct position of flue according to practical situation, has regulation and control flue-gas temperature function, makes flue-gas temperature meet requirement.
In aforementioned whole technical scheme, the operation principle of described combustion-compensating device is to heat flue gas, its temperature is made to raise, meet corresponding heating or heat exchange demand, as preferably, its mode of heating can be burning fuel gas heating, electrical heating, heating plasma, coal-fired heating or fuel Heating etc., can select the most flexibly.
Preferred as aforementioned whole technical schemes, described reforming furnace arranges desulfurizer, the fuel gas being passed through radiation chamber burner and described combustion-compensating device is first passed through described desulfurizer and carries out desulfurization process.
Compared with existing reforming furnace, technical solutions of the utility model have the advantage that
1. eliminating the waste heat boiler of existing reforming furnace convection cell, the waste heat making full use of flue gas carrys out other raw materials technology and the combustion air of heated reformate device, improves the economy of fuel utilization；
2. reduce reformer heating furnace quantity, reduce construction investment, reduce the complexity of system；
3. pair fuel gas carries out fine de-sulfur process, can solve the dew point corrosion problem of degree of depth residual neat recovering system low-temperature zone heat transmission equipment.
Accompanying drawing explanation
Fig. 1 a is the structural representation of this utility model embodiment 1 reforming furnace；
Fig. 1 b is the system connection figure of embodiment 1 reforming furnace system；
Fig. 2 a is the structural representation of embodiment 2 reforming furnace；
Fig. 2 b is the system connection figure of embodiment 2 reforming furnace system.
Wherein:
1: radiation chamber；2: convection cell；3: combustion-compensating device；4: flue；5: heating unit；6: chimney.
Detailed description of the invention
This utility model is described further by embodiment below in conjunction with accompanying drawing, in order to be more fully understood that this utility model.
Embodiment 1
As shown in Figure 1a, reforming furnace of the present utility model is mainly made up of radiation chamber 1, convection cell 2, combustion-compensating device 3 and flue 4；Convection cell 2 top arranges flue 4, and as other embodiment, flue 4 may also be arranged on side wall or the headwall of convection cell 2；Combustion-compensating device 3 is alternatively provided at the top of convection cell 2, side wall or headwall.
Connect according to system shown in Fig. 1 b, first pass through convection cell 2 from radiation chamber 1 high-temperature flue gas out, then be transported to heating unit 5 by flue 4, discharge finally by chimney 6；When kiln gas temperature can not meet heating or heat exchange demand, by being arranged on the combustion-compensating device 3 of convection cell 2, flue gas can being heated, making flue-gas temperature raise, until meeting demand；Heating unit 5, according to different job demand, can be raw materials technology heat exchange unit, combustion air heat exchange unit or the fuel gas heat exchange unit etc. needing heating；The multiple heaters such as combustion-compensating device 3 optional burning fuel gas heating, electrical heating, heating plasma or coal and oil heating.
The common design of reforming furnace is to arrange waste heat boiler at convection section to reclaim the heat energy of the high-temperature flue gas from radiant section, produces middle pressure steam, but oil plant does not lack steam, and the steam that waste heat boiler produces is limited for refinery's meaning；And reforming furnace fuel is clean high heating value gas, produce steam with clean high heating value gas unreasonable, uneconomical, even identical to waste.The design of the present embodiment reforming furnace eliminates waste heat boiler, is delivered directly to high-temperature flue gas need heating or the equipment of heat exchange, is heated flue gas by combustion-compensating device when flue-gas temperature deficiency so that it is meet demand.This design allows the heat energy of flue gas be fully utilized, and drastically increases the utilization ratio of fume afterheat, the most rationally.
Embodiment 2
As shown in Figure 2 a and 2 b, the present embodiment reforming furnace, on the basis of embodiment 1, which further eliminates convection cell, and flue 4 is connected directly between radiation chamber 1 top, and the flue gas of radiation chamber 1 is directly transported to heating unit 5 by the flue 4 on radiation chamber top；When some unit is higher to the temperature requirement of flue gas, can not meet from radiation chamber 1 flue-gas temperature out when requiring, this section of flue 4 arrange combustion-compensating device 3, flue gas is heated so that it is the demand to flue-gas temperature of subsequent heat unit 5 can be met；If less demanding to flue-gas temperature of heating unit 5, be fully able to meet demand from radiation chamber 1 flue-gas temperature out, then corresponding flue 4 also can be not provided with combustion-compensating device 3.
It should be understood that; above-described embodiment is only for illustrating technology of the present utility model design and feature; its object is to for skilled in the art realises that content of the present utility model and implementing according to this, not detailed description of the invention is exhaustive, it is impossible to limit protection domain of the present utility model with this.All modifying according to the technical solution of the utility model or equivalent, without deviating from objective and the scope of technical solutions of the utility model, it all should be contained in the middle of right of the present utility model.
Claims (6)
1. a reforming furnace for band flue heat step compensation, including radiation chamber (1), convection cell (2), combustion-compensating device (3) and flue (4), it is characterised in that:
Being not provided with waste heat boiler, described radiation chamber (1) connects described convection cell (2), and convection cell (2) connects described heating unit (5) by described flue (4)；Flue gas enters convection cell (2) the most afterwards from radiation chamber (1), then is fed directly to heating unit (5) by flue (4)；Described combustion-compensating device (3) is arranged in convection cell (2) and/or flue (4).
The reforming furnace of band flue heat step compensation the most according to claim 1, it is characterised in that: described flue (4) is arranged on the top of convection cell (2), side wall or headwall.
The reforming furnace of band flue heat step compensation the most according to claim 1, it is characterised in that: described combustion-compensating device (3) is arranged on side wall, headwall or the tip position in convection cell (2).
4. a reforming furnace for band flue heat step compensation, including radiation chamber (1), combustion-compensating device (3) and flue (4), it is characterised in that:
Being not provided with waste heat boiler, described radiation chamber (1) connects described heating unit (5) by described flue (4)；Flue gas is fed directly to heating unit (5) by flue (4) the most afterwards from radiation chamber (1)；Described combustion-compensating device (3) is arranged in flue (4).
5. according to the reforming furnace of the band flue heat step compensation described in any one of Claims 1-4, it is characterised in that: described combustion-compensating device (3) is electrical heating, heating plasma, the heating of burning fuel gas, coal-fired or fuel Heating.
6. according to the reforming furnace of the band flue heat step compensation described in any one of Claims 1-4, it is characterized in that: described reforming furnace also sets up desulfurizer, be passed through the fuel gas of radiation chamber (1) burner and described combustion-compensating device (3) and first pass through described desulfurizer and carry out desulfurization process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620376141.8U CN205635499U (en) | 2016-04-29 | 2016-04-29 | Take reformation heating furnace of flue heat ladder compensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620376141.8U CN205635499U (en) | 2016-04-29 | 2016-04-29 | Take reformation heating furnace of flue heat ladder compensation |
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| CN205635499U true CN205635499U (en) | 2016-10-12 |
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| CN201620376141.8U Active CN205635499U (en) | 2016-04-29 | 2016-04-29 | Take reformation heating furnace of flue heat ladder compensation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11958047B2 (en) | 2018-06-29 | 2024-04-16 | Shell Usa, Inc. | Electrically heated reactor and a process for gas conversions using said reactor |
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2016
- 2016-04-29 CN CN201620376141.8U patent/CN205635499U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11958047B2 (en) | 2018-06-29 | 2024-04-16 | Shell Usa, Inc. | Electrically heated reactor and a process for gas conversions using said reactor |
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