CN201558696U - Gas distribution plate and catalytic combustion reactor - Google Patents
Gas distribution plate and catalytic combustion reactor Download PDFInfo
- Publication number
- CN201558696U CN201558696U CN2009202475480U CN200920247548U CN201558696U CN 201558696 U CN201558696 U CN 201558696U CN 2009202475480 U CN2009202475480 U CN 2009202475480U CN 200920247548 U CN200920247548 U CN 200920247548U CN 201558696 U CN201558696 U CN 201558696U
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- China
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- gas distribution
- distribution grid
- reactor
- catalytic combustion
- swash plate
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Abstract
The utility model discloses a gas distribution plate and a catalytic combustion reactor. The gas distribution plate is of a prism frustum structure in appearance and consists of a top flat plate and a peripheral inclined plate, wherein the flat plate and the inclined plate are provided with open holes; and the opening rate is 20-34%. The catalytic combustion reactor utilizes the gas distribution plate to effectively solve the problem of uneven gas distribution on the side wall of a container caused by the shape change of the cross section or a runner, the pressure loss of the gas passing through the distribution plate is reduced by improving the opening rate, the distribution effect is further improved by adjusting the size of the open holes at different positions of the distribution plate, and the characteristics of low pressure drop and good distribution effect can be achieved.
Description
Technical field
The utility model relates to a kind of gas distribution grid and catalytic combustion reactor, especially for the gas distribution grid of square catalytic combustion reactor.
Background technology
Catalytic combustion technology is because most block honeycomb catalyst of cuboid that uses, therefore the profile of catalytic combustion reactor also is a cuboid, so that catalyst putting in reactor, but the employing of catalytic combustion reactor gas inlet and outlet pipeline is standard technology pipeline (circular cross-section).When gas distributes when circular cross-section carries out the transition to the square-section can be even, reducing flow dead will directly influence the treatment effect of gas, thereby can distribution of gas evenly will directly influence the treatment effect of reactor in the reactor.
Generally all distributor is set at present,, says as CN01202747.2 and carry distribution grid to improve the distribution effect of gas at the reactor inlet place.Realize the even distribution of gas by the method for adjusting zones of different percent opening on the plate.Perforate is more little, and is close more, and then the distribution of gas effect is good more, but because percent opening low (0.4%～3%), thereby the pressure loss is bigger.When circulation area sudden change or flow channel shape variation, distribute simultaneously and be difficult to evenly.
In order to improve distribution efficiency, gas distributor also is set at catalyst as last, even take above-mentioned measure, distribution of gas is still even inadequately, the velocity contrast of each point is still bigger, and peak flow rate (PFR) can reach about 2 times of lowest speed, also has the big deficiency of pressure drop simultaneously.
Summary of the invention
At existing issue, the utility model provides a kind of gas distribution grid and catalytic combustion reactor, realizes distributing preferably effect and low pressure drop simultaneously.
The utility model gas distribution grid, profile are the terrace with edge structure, by top panel and on every side swash plate constitute, on dull and stereotyped and swash plate, perforate is set, percent opening is 20%～34%.
In the utility model gas distribution grid, top panel is the small end top panel of terrace with edge structure, and the terrace with edge structure optimization is 3～6 terrace with edge structures.Swash plate is 160 °～175 ° with the angle of flat board, and dull and stereotyped area accounts for 10%～25% of entire cross section area.Varying in size of dull and stereotyped and hole identical with perforate gap on the swash plate, the opening diameter on the flat board is bigger, the opening diameter on the swash plate is less, the perforate size can even transition, the perforate size be 0.02～0.05 times to application apparatus inlet duct diameter.In swash plate peripheral edge (near the shell of reactor place) perforate size is dull and stereotyped 0.5～0.7 times of going up opening diameter.
A kind of catalytic combustion reactor, the place, gas access is provided with above-mentioned gas distribution grid of the present invention in reactor.
Gas distribution grid and shell of reactor bottom are at a distance of certain distance during installation, form buffering area, its distance is in 5%～15% reactor cross-section length of side, and be not less than 50mm, between distribution grid top and catalyst at a distance of certain distance, form the distributed area, its distance is 0.2～0.35 times of reactor cross-section length of side.
The utility model distribution grid has dull and stereotyped and swash plate structure, the uneven problem of distribution of gas on the container limit wall that can effectively solve the change of sectional area or flow channel shape and bring, the pressure loss when reducing gas by distribution grid by improving percent opening, utilize to adjust the method for diverse location perforate size on the distribution grid again and further improve the distribution effect, reach that pressure drop is low, the distribution good effectiveness.
Description of drawings
Fig. 1 is the scheme of installation of the utility model distribution grid in catalytic combustion reactor.
Fig. 2 is the structural representation of the utility model distribution grid.
Wherein: 1-catalytic combustion reactor gas access, 2-distribution grid, 3-catalyst for catalytic combustion, 4-catalytic combustion reactor, 5-flat board, 6-swash plate, 7-perforate.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.As shown in Figure 2, distribution grid is made up of 1 flat board 5 and 4 swash plates 6, and profile is a truncated rectangular pyramids, and swash plate 6 is 160 °～175 ° with the angle of flat board 5, and dull and stereotyped 5 area accounts for 10%～25% of entire cross section area.
As shown in Figure 1, during installation and distribution grid and catalytic combustion reactor 4 outer casing underparts at a distance of certain distance, form buffering area, its distance is in 5%～15% reactor length of side, and be not less than 50mm, at a distance of certain distance, form the distributed area between distribution grid top and catalyst 3, its distance is 0.2～0.35 times of reactor cross-section length of side.Perforate on fabric swatch, percent opening be 20%～34%, the varying in size of identical and hole, perforate gap on each plate, the perforate size at 0.02～0.05 times to the inlet duct diameter.Is 0.5～0.7 times of opening diameter on the flat board at distribution grid near shell of reactor place perforate size.
Actual effect relatively
For example: reactor cross-section is of a size of 3m * 3m, circular gas access diameter 2m, and gas mean flow rate calculated value is 4.88m/s in inlet duct gas flow rate: the 14m/s, reactor.
| The distribution-free plate | Distribution grid is arranged | |
| Maximum upwards flow velocity (m/s) | (5.43 mean flow rate * 1.11) | (5.14 mean flow rate * 1.05) |
| Minimum upwards flow velocity (m/s) | (2.5 mean flow rate * 0.51) | (4.57 mean flow rate * 0.94) |
Actual Peak Flow Rate=mean flow rate * 1.15
Actual minimum flow velocity=mean flow rate * 0.89
Realized more evenly distributing of gas, only 200Pa falls in the pressure of this distributor simultaneously, and operation is not exerted an influence substantially.
Claims (7)
1. gas distribution grid, it is characterized in that: the gas distribution grid profile is the terrace with edge structure, by top panel and on every side swash plate constitute, on dull and stereotyped and swash plate, perforate is set, percent opening is 20%～34%.
2. according to the described gas distribution grid of claim 1, it is characterized in that: top panel is the small end top panel of terrace with edge structure, and the terrace with edge structure is 3～6 terrace with edge structures.
3. according to the described gas distribution grid of claim 1, it is characterized in that: swash plate is 160 °～175 ° with the angle of flat board, and dull and stereotyped area accounts for 10%～25% of entire cross section area.
4. according to the described gas distribution grid of claim 1, it is characterized in that: the opening diameter on the flat board is bigger, and the opening diameter on the swash plate is less, the perforate size be 0.02～0.05 times to application apparatus inlet duct diameter.
5. according to the described gas distribution grid of claim 4, it is characterized in that: at swash plate peripheral edge perforate size 0.5～0.7 times for opening diameter on the flat board.
6. catalytic combustion reactor is characterized in that: the place, gas access is provided with the described gas distribution grid of right mark 1 to 5 arbitrary claim in reactor.
7. according to the described catalytic combustion reactor of claim 6, it is characterized in that: gas distribution grid and shell of reactor bottom are at a distance of 5%～15% reactor cross-section length of side, and be not less than 50mm, between distribution grid top and catalyst at a distance of 0.2～0.35 times of reactor cross-section length of side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202475480U CN201558696U (en) | 2009-10-27 | 2009-10-27 | Gas distribution plate and catalytic combustion reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202475480U CN201558696U (en) | 2009-10-27 | 2009-10-27 | Gas distribution plate and catalytic combustion reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201558696U true CN201558696U (en) | 2010-08-25 |
Family
ID=42623842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202475480U Expired - Lifetime CN201558696U (en) | 2009-10-27 | 2009-10-27 | Gas distribution plate and catalytic combustion reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201558696U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537985A (en) * | 2012-01-18 | 2012-07-04 | 常州市鼎龙环保设备有限公司 | Catalyzing field used for waste gas incinerator |
| CN103666491A (en) * | 2013-12-04 | 2014-03-26 | 北京神雾环境能源科技集团股份有限公司 | Rotation bed dry distillation furnace |
| CN106040109A (en) * | 2016-07-04 | 2016-10-26 | 茂名重力石化机械制造有限公司 | Gas flow distribution plate and reactor with same |
-
2009
- 2009-10-27 CN CN2009202475480U patent/CN201558696U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537985A (en) * | 2012-01-18 | 2012-07-04 | 常州市鼎龙环保设备有限公司 | Catalyzing field used for waste gas incinerator |
| CN102537985B (en) * | 2012-01-18 | 2013-12-18 | 常州市鼎龙环保设备有限公司 | Catalyzing field used for waste gas incinerator |
| CN103666491A (en) * | 2013-12-04 | 2014-03-26 | 北京神雾环境能源科技集团股份有限公司 | Rotation bed dry distillation furnace |
| CN103666491B (en) * | 2013-12-04 | 2015-09-02 | 北京神雾环境能源科技集团股份有限公司 | Rotating bed gas retort |
| CN106040109A (en) * | 2016-07-04 | 2016-10-26 | 茂名重力石化机械制造有限公司 | Gas flow distribution plate and reactor with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100825 |
|
| CX01 | Expiry of patent term |