CN1204021A - Catalytic combustor - Google Patents
Catalytic combustor Download PDFInfo
- Publication number
- CN1204021A CN1204021A CN 98115165 CN98115165A CN1204021A CN 1204021 A CN1204021 A CN 1204021A CN 98115165 CN98115165 CN 98115165 CN 98115165 A CN98115165 A CN 98115165A CN 1204021 A CN1204021 A CN 1204021A
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- Prior art keywords
- oxygen
- catalytic combustion
- containing gas
- conduit
- gas introduction
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Abstract
The present invention provides a catalytic combustion device which can reduce the reduction of pressure and maintain good burning status. In the catalytic combustion device composed of an oxygen leading passage with fuel supply port, a fixed catalyst bed and a burning gas discharge passage, a swirl form plate is disposed at the fuel supply port of the oxygen leading passage in a manner of vertical to the pipe axes.
Description
The present invention relates to the improvement of catalytic combustion system, in more detail, be a kind of ratio in the past experience more can reduce the catalytic combustion system of the pressure loss significantly.
The combustion system of liquid fuel or gaseous fuel can roughly be divided into burner combustion and catalytic combustion.In general, catalytic combustion does not have flame, can be under lower temperature combustion fuel, therefore, compare with situation with the burner combustion of flame combustion, its advantage is to suppress the generation of NOx.And, even catalytic combustion also can combustion fuel under the low oxygen concentration condition that burner combustion can't be carried out, in addition,, can also make fuel completing combustion as long as be controlled to suitable burning condition.
Catalytic combustion system is made up of conduit and the fixed bed that is arranged on the combustion catalyst in this conduit basically.Utilize this catalytic combustion system, make by conduit and supply with the oxygen-containing gas (being typically air) of catalyst bed and fuel under the intensification condition, by reacting with the contact action of combustion catalyst and burning, and, hide respond heat burning gases can discharge from catalyst bed downstream conduit, like this, can use catalytic combustion system on the thermal source of heater unit for example.
In general,, importantly to help catalyst bed integral body to carry out combustion reaction,, before oxygen-containing gas and fuel supply catalyst bed, at first must mix uniformly for this reason about catalytic combustion system.If this undercompounding, localized hyperthermia will take place in catalyst bed, and like this, not only catalyst has the anxiety of the physical injury of being subjected to, and because catalyst activity reduces, also can bring the drawbacks such as generation of encouraging carbon monoxide and hydrocarbon.
Thereby, the catalytic combustion system of conventional art as shown in Figure 2, in the following way: the conduit of combustion catalyst bed 1 upstream side, i.e. diameter reduction in forming the conduit way of oxygen-containing gas introduction channel 2, this conduit is made the venturi tube structure, fuel supply port 4 is set on its minor diameter part.If adopt this mode, even have only a place to have fuel supply port 4 on the oxygen-containing gas introduction channel 2, oxygen-containing gas and fuel are evenly mixed, the generation of localized hyperthermia's phenomenon that can at first prevent from the catalyst bed to be produced.
But, adopt above-mentioned venturi tube structure, even be not like this, compare with the burner combustion device, also further increased the pressure loss of the big catalytic combustion system of the pressure loss, this point is not desirable.
Subsidiary saying about catalytic combustion system, for example in order to supply with oxygen-containing gas to it, must set pressure fan usually, but in the big occasion of the pressure loss of catalytic combustion system, can bring the high problem of pressure fan power consumption.
Therefore, the purpose of this invention is to provide a kind of catalytic combustion system that pressure descends and can keep good fired state that in fact can not take place outside catalyst fixed bed.
Catalytic combustion system of the present invention, the stationary catalyst bed that is filled with combustion catalyst is set in conduit, this stationary catalyst bed ground of clamping with a side of conduit as the oxygen-containing gas introduction channel, and the opposite side of conduit is as the burning gases passing away, in the oxygen-containing gas introduction channel, offer the fuel supply port, it is characterized in that, near the fuel supply port of oxygen-containing gas introduction channel (upstream of fuel supply port or downstream), be provided with eddy current in the mode of vertical conduit axis and form plate.
Fig. 1 is the sectional drawing of catalytic combustion system of the present invention.
Fig. 2 is the sectional drawing of catalytic combustion system in the past.
Fig. 3 and Fig. 4 are the stereograms that eddy current forms plate.
Below, describe catalytic combustion system of the present invention in detail according to Fig. 1.
As the combustion catalyst that forms stationary catalyst bed 1, in general, preferably use for example to be loaded with on the carrier of the hear resistance inorganic oxide being made honeycombed structure that noble metal such as platinum, palladium is the thing of active component.Utilization is loaded with the granular catalyst that noble metal is an active component on granular hear resistance inorganic oxide carrier, form stationary catalyst bed 1.But, compare with the catalyst bed that forms the honeycombed structure catalyst, requiring can not have big pressure to fall with the catalyst bed that granular catalyst forms.
Compare with the conventional art of the oxygen-containing gas introduction channel being made the venturi tube structure and offered the fuel supply port on its minor diameter part, maximum characteristics of the present invention are to be provided with eddy current and to form plate 5 near the fuel supply port of oxygen-containing gas introduction channel.
In this structure, it is to use metal traffic controller that so-called eddy current forms plate, it is provided with in the mode perpendicular to the axis of oxygen-containing gas introduction channel, and making the fluid that flows by this introduction channel produce the central axis that forms plate with this eddy current is the eddy current of rotation.
Eddy current used in the present invention forms plate, heart portion is provided with peristome 6 therein, around this peristome, be provided with several openings that the slave plate center is radial arrangement, in these openings, be equipped with the blade that tilts and extend from the edge part that extends along its radial direction respectively in the same direction.In addition, these peripheral openings can be as shown in Figure 2 with the continuous form of central opening portion, or as shown in Figure 3 with central opening portion form independent of each other.
Moreover, form plate as eddy current and also can adopt following structure, promptly be provided with peristome at the thicker plate central part of wall ratio, several otch that the slave plate center is radial configuration are set around this peristome, these otch are with respect to the axis of conduit opening obliquely.
As for the position that is provided with of eddy current formation plate 5, no matter be arranged on the upstream side of stationary catalyst bed 1, the upstream side or the downstream that also are arranged on fuel supply port 4 can not counteract.Eddy current forms plate 5 and can also be provided with in any direction, can be arranged to make dihedral vane 7 to flow down the side-prominent state of trip towards gas, also can be arranged to the outstanding state of upstream side towards gas stream.And form the number that is provided with of plate 5 about eddy current, though polylith can be set, but form the viewpoint that plate can reduce pressure from the polylith eddy current at least, usually preferably be provided with one, even be provided with one, also can before being supplied with stationary catalyst bed, oxygen-containing gas and fuel mix equably in advance.
When the fuel of supplying with catalytic combustion was liquid fuel such as kerosene, diesel oil, the fuel supply port 4 of catalytic combustion system of the present invention can be all nozzles etc. that if can be injected into vaporific nozzle to fuel or make fuel atomization, spraying by electrical heating.
Catalytic combustion system of the present invention, though the oxygen-containing gas introduction channel of stationary catalyst bed upstream side does not adopt the structure of venturi tube, but it is the same with the situation that adopts this structure, by being set, can mix oxygen-containing gas equably with fuel eddy current formation plate, therefore, compare with the catalytic combustion system of in the past same scale, can weaken the reduction of pressure significantly.
Claims (4)
1, a kind of catalytic combustion system, the stationary catalyst bed that is filled with combustion catalyst is set in conduit, this stationary catalyst bed ground of clamping with a side of conduit as the oxygen-containing gas introduction channel, and the opposite side of conduit is as the burning gases passing away, in the oxygen-containing gas introduction channel, offer the fuel supply port, it is characterized in that near the mode with the vertical conduit axis fuel supply port of oxygen-containing gas introduction channel is provided with eddy current formation plate.
2, catalytic combustion system according to claim 1, it is characterized in that, the eddy current that is arranged on the oxygen-containing gas introduction channel forms plate, central part at plate is furnished with opening, the central part that is provided with several slave plates around this opening is the peristome of radial configuration, is respectively equipped with the blade that tilts and extend from the edge portion that the radial direction along peristome extends in these peristomes in the same direction.
3, catalytic combustion system according to claim 1, it is characterized in that, the eddy current that is arranged on the oxygen-containing gas introduction channel forms plate, central part at plate is furnished with opening, the center that is provided with several slave plates around this opening is the otch of radial configuration, and these otch have with respect to the axis of the conduit structure of opening obliquely.
4, catalytic combustion system according to claim 1 is characterized in that, described liquid fuel supply mouth is atomizing nozzle or electric heated type gasification nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98115165 CN1204021A (en) | 1997-06-27 | 1998-06-26 | Catalytic combustor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP185970/97 | 1997-06-27 | ||
| CN 98115165 CN1204021A (en) | 1997-06-27 | 1998-06-26 | Catalytic combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1204021A true CN1204021A (en) | 1999-01-06 |
Family
ID=5224434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98115165 Pending CN1204021A (en) | 1997-06-27 | 1998-06-26 | Catalytic combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1204021A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828137B (en) * | 2006-01-18 | 2010-05-12 | 北京工业大学 | Gas fuel catalytic combustor |
| CN103958966A (en) * | 2011-09-08 | 2014-07-30 | 加热技术改良控股有限公司 | Burner comprising a reactor for catalytic burning |
-
1998
- 1998-06-26 CN CN 98115165 patent/CN1204021A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828137B (en) * | 2006-01-18 | 2010-05-12 | 北京工业大学 | Gas fuel catalytic combustor |
| CN103958966A (en) * | 2011-09-08 | 2014-07-30 | 加热技术改良控股有限公司 | Burner comprising a reactor for catalytic burning |
| US9618198B2 (en) | 2011-09-08 | 2017-04-11 | Reformtech Heating Holding Ab | Burner comprising a reactor for catalytic burning |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |