CN105597655A - Gas distribution device - Google Patents
Gas distribution device Download PDFInfo
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- CN105597655A CN105597655A CN201610151151.6A CN201610151151A CN105597655A CN 105597655 A CN105597655 A CN 105597655A CN 201610151151 A CN201610151151 A CN 201610151151A CN 105597655 A CN105597655 A CN 105597655A
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- gas
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- distribution grid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J12/00—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor
- B01J12/007—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor in the presence of catalytically active bodies, e.g. porous plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32237—Sheets comprising apertures or perforations
- B01J2219/32244—Essentially circular apertures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32255—Other details of the sheets
- B01J2219/32262—Dimensions or size aspects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32293—Cubes or cubic blocks
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention provides a gas distribution device which comprises a transition section and distribution plates, wherein the transition section is provided with a gas inlet and a gas outlet; the transition section is internally provided with one distribution plate or a plurality of distribution plates arranged at intervals; the plurality of distribution plates arranged at intervals are sequentially distributed in a direction from the gas inlet to the gas outlet; the edge of each distribution plate is connected with an inner wall of the transition section; the distribution plates are provided with a plurality of through holes; windblown mine gas enters into the gas distribution device through the inlet of the gas distribution device; the on-way resistance of the windblown mine gas along the cross section can be preliminarily adjusted by use of the through hole in the distribution plate adjacent to the gas inlet section; then the windblown mine gas enters into the through holes in the other distribution plates, so that the on-way resistance of the windblown mine gas along the cross section can be adjusted again, the flow velocity of the gas along the cross section of the gas distribution device is uniform, and thus the purpose of enabling the gas to enter an oxidation device so as to flow uniformly is achieved.
Description
Technical field
The present invention relates to wind gas-removing technical field, relate in particular to a kind of distribution device in gas-fluid.
Background technology
Methane approximately 200 billion cubic meters of annual national colliery wind gas-removing discharge. Due to wind row wattThis methane concentration is low, cannot light by conventional method, and therefore wind gas-removing is always for a long timeBe not utilized effectively, but be directly discharged into atmosphere.
Heat accumulating type method for oxidation is by by the heat discharging after the methane oxidation in wind gas-removingBe accumulated in Periodic Flow Reversal Reactors, maintain the required temperature of oxidation, make methane can continue oxygenChange. After oxidation, heat can heat supply or carry out steam-electric power. The method had both reduced greenhouse gases rowPut, again the gas slatterning is used as clean resource.
No matter be thermal oxidation process, or catalysed oxidation processes, wind gas-removing enters from feed-lineEnter in oxidation unit, because both areas of section differ larger, need to entering at oxidation unitMouth place, as the changeover portion of oxidation unit, makes the flow velocity of wind gas-removing after distribution device in gas-fluidCan be even along the cross section of oxidation unit, make thermal storage ceramic (catalyst) bed obtain abundant profitWith, methane oxidation evenly carries out along the cross section of oxidation unit, avoids occurring in oxidation unitHot-spot. Therefore import and export distribution device in gas-fluid to improve oxidation unit methane destroy efficiency,The overall performance that improves device is most important.
Application number is that the Chinese patent of 200810224909.X discloses a kind of mine ventilation gas placeThe weary air inlet rectifier of reason device, it is to adopt inside and outside Taper Pipe and air distributor structure to realize importThe distribution of place's gas. The shortcoming of this device is that complex structure, weight are large, is difficult to ensure that gas is equalThe effect of even distribution; And do not see that from structure wind gas-removing is gathered on the less cross section of import,How entering after oxidation unit rapid dispersion equably along cross-sectional distribution; This patent has only providedEmbodiment on 500 × 600mm cross section, this scheme is difficult to Enlargement Design and is applied to large-scale oxidationIn device. Therefore, provide a kind of simple in structure, and can make arranging for wind of gas uniform distributionThe distribution device in gas-fluid that methane oxidized apparatus is imported and exported is very necessary.
Summary of the invention
The technical problem that the present invention solves is to provide one can make gas along cross section Uniform FlowDistribution device in gas-fluid.
In view of this, the application provides a kind of distribution device in gas-fluid, comprising: changeover portion with pointFabric swatch, described changeover portion is provided with gas feed and gas vent, and described changeover portion is inner to be arrangedThere are a distribution grid or some distribution grids of being separated by and arranging, described some distribution grids of being separated by and arrangingDirection along gas feed to gas vent is arranged successively, the edge of each described distribution grid and instituteThe inwall of stating changeover portion connects, and is provided with some through holes on described distribution grid.
Preferably, between the described distribution grid of close gas feed and described gas feed, be provided withCertain distance.
Preferably, in described some distribution grids, the number of distribution grid is more than or equal to 2.
Preferably, described through hole be shaped as circle, ellipse, rectangle, triangle and polygonOne or more in shape.
Preferably, described changeover portion is for to increase successively from gas feed to gas vent cross-sectional areaQuadrangular or the round platform increasing successively to gas vent cross-sectional area from gas feed.
The application provides a kind of distribution device in gas-fluid, and it comprises changeover portion and distribution grid, described inChangeover portion is provided with gas feed and gas vent, and described changeover portion inside is provided with a distributionPlate or some distribution grids of being separated by and arranging, the distribution grid of described some settings of being separated by is along gas feedDirection to gas vent is arranged successively, the edge of each described distribution grid and described changeover portionInwall connects, and is provided with some through holes on described distribution grid. Wind gas-removing fills by distribution of gasThe import of putting enters distribution device in gas-fluid, utilizes near the through hole on the distribution grid of gas feed sectionCan tentatively adjust wind gas-removing along the on-way resistance on cross section, wind gas-removing enters other distribution againThrough hole on plate can be adjusted wind gas-removing again along the on-way resistance on cross section, makes gas along gasFlowing velocity on distribution apparatus cross section is even, thereby it is even along oxidation unit cross section to reach gasMobile object.
Brief description of the drawings
Fig. 1 is the structural representation of distribution device in gas-fluid of the present invention.
Detailed description of the invention
In order further to understand the present invention, below in conjunction with embodiment to the preferred embodiment of the inventionBe described, but should be appreciated that these are described is for further illustrating feature of the present inventionAnd advantage, instead of limiting to the claimed invention.
The embodiment of the invention discloses a kind of distribution device in gas-fluid, comprising: changeover portion and distribution grid,Described changeover portion is provided with gas feed and gas vent, and described changeover portion inside is provided with oneDistribution grid or some distribution grids of being separated by and arranging, the distribution grid of described some settings of being separated by is along gasImport is arranged successively to the direction of gas vent, the edge of each described distribution grid and described transitionThe inwall of section connects, and is provided with some through holes on described distribution grid.
As shown in Figure 1, Fig. 1 is the structural representation of the application's distribution device in gas-fluid, in figure 1For gas feed, 2 is the first distribution grid, and 3 is the first through hole, and 4 is the second distribution grid, and 5 areThe second through hole.
The application's distribution device in gas-fluid, can owing to being provided with some distribution grids in changeover portion insideMake wind gas-removing even along flowing velocity in cross section at distribution device in gas-fluid, finally make wind gas-removingCross section along oxidation unit is uniformly distributed.
Described in the application, distribution device in gas-fluid is arranged at respectively import and the outlet of oxidation unit, itsEffect is the changeover portion as oxidation unit, makes wind gas-removing enter after oxidation unit and can divideCloth is even, therefore, well known to those skilled in the art, the changeover portion of described distribution device in gas-fluidGas feed sectional area be different from gas vent sectional area, go out from gas feed to gasMouth sectional area increases gradually, and gas feed cross-sectional area is far smaller than gas vent cross sectionLong-pending. But only have the area flaring of distribution device in gas-fluid changeover portion, can not solve gas uniform and divideCloth problem, must be provided with distribution grid, some distribution grids need to be further set and reach air-flowEqually distributed object on distribution device in gas-fluid cross section. According to the present invention, close gas feedBetween described distribution grid and described gas feed, be provided with certain distance, near gas feedDistribution grid and described gas feed at intervals. The application preferably gas feed withDistribution grid near gas feed is provided with certain distance, can effectively avoid wind gas-removing to concentrateAt oxidation unit near axis, and there is air-flow problem pockety.
When through distribution grid, can adjust wind row in order to ensure the gas in distribution device in gas-fluidThe on-way resistance of gas, impels gas to be evenly distributed in oxidation unit, some described in the applicationThe edge of each distribution grid and the changeover portion of described distribution device in gas-fluid of distribution grid arranging of being separated byInwall connect, between distribution grid and described changeover portion inside, there is not space, both are tightContact.
If the area in import cross section and oxidation unit cross section differs larger, more difficult one deck distribution grid of usingReach gas along the equally distributed object in device cross section, therefore the application preferably adopts several phasesEvery the gas distribution grid combination arranging, the number of distribution grid is more than or equal to 2, as preferred sideCase, described distribution grid is two and can achieves the goal; If import cross section and oxidation unit cross sectionIt is less that area differs, and at changeover portion, one deck distribution grid is set and can realizes being uniformly distributed of gas.
Described in the application, on distribution grid, be provided with some through holes, the shape of the application to described through holeHave no particular limits, can select according to specific circumstances the shape of through hole, the shape of described through holeShape can be the multiple hole shapes such as circle, ellipse, rectangle, triangle and polygon. This ShenPlease at definite some distribution grids at the position of distribution device in gas-fluid, the shape of through hole, the knot of sizeIn structure parameter, need to be according to the bed resistance of oxidation unit, area of section, intake areaDeng data analysis, finally, to ensure that air-flow is uniformly distributed in oxidation unit, ensure the highestGas destroy efficiency. The application has no particular limits the material of described distribution grid, according toActual conditions, can take the conventional material in this area.
Well known to those skilled in the art, described oxidation unit middle section shape is not unique,Selective oxidation device cross sectional shape according to actual needs, can be circular cross-section, also canFor square-section, can also be the cross section of other shapes such as elliptic cross-section equally, therefore this ShenGas feed that please described distribution device in gas-fluid had both been applicable to the oxidation unit of square-section, also couldMore conveniently be applied in the oxidation unit of other shaped cross such as circular cross-section, described gasThe cross-sectional area of the changeover portion in distribution apparatus can be circular, can be also rectangle, all rightIt is polygon. As preferred version, described changeover portion is transversal to gas vent from gas feedThe quadrangular that area increases successively or increase successively from gas feed to gas vent cross-sectional areaRound platform.
According to the ratio of wind gas-removing range of flow, import and changeover portion, oxidation unit cross section chiThe structural parameters such as very little and shape, determine the distance of first distribution grid and import in combination distribution gridAnd the size of perforate on plate, quantity and layout, determine that in combination distribution grid, second distribution grid openedSize, quantity and the distribution in hole, to guarantee under the various wind gas-removing flows in opereating specificationAll even along the flow velocity in cross section in oxidation unit.
In an embodiment, be 2～4m at the gas feed cross-sectional area of distribution device in gas-fluid2, gasThe cross-sectional area of body outlet is 22～25m2, in changeover portion, be provided with two distribution grids, importThe distance of the section of crossing is apart from gas feed 800mm～1000mm, and the distance of two distribution grids is1200～1600mm, on distribution grid, the shape of through hole is preferably circle, and its diameter is preferably100～300mm, two through hole Kong centers are all preferably 300～500mm.
The application arranges that in distribution device in gas-fluid two or multi-disc have the distribution grid of perforate, canMake to enter the gas Uniform Flow on cross section in oxidation unit, and do not need other extra knotStructure, has simplified the structure of wind gas-removing device, and the application's distribution grid is lightweight simultaneously, constructionSimply, save lot of materials, reduced cost, and can obtain good distribution of gas effectReally, can meet the distribution of gas requirement of a large amount of wind gas-removing oxidation units. In addition, the applicationThe distribution device in gas-fluid technical ability providing is applied to wind gas-removing catalytic oxidizing equipment, also can be applicable toThe inlet gas distribution requirement of thermal oxidation apparatus.
In order further to understand the present invention, below in conjunction with embodiment, gas provided by the invention is dividedCloth apparatus is elaborated, and protection scope of the present invention is not limited by the following examples.
Embodiment 1
Be 1000m in treating capacity3The import of the catalytic oxidizing equipment of the wind gas-removing of/min with go outMouth is installed respectively combined gas distribution apparatus. The sectional dimension of this oxidation unit is6000mm × 6000mm, catalyst is the monolithic precious metal of load 0.5%Pd, carriesBody is 200 object cordierite honeycomb ceramics, and thermal storage ceramic is corundum-mullite ceramic honey comb. ShouldDevice data acquisition and control is completed by Siemens S7-300 PLC, and host computer has perfect man-machineInterface.
Changeover portion structure in the present embodiment in distribution device in gas-fluid as shown in Figure 1, gas feedCross-sectional area be 2m2, the cross-sectional area of gas vent is 24m2, in changeover portion, be provided with twoIndividual distribution grid, apart from the first near distribution grid of distribution device in gas-fluid import and the distance of gas feedFor 1000mm, the distance of two distribution grids is 1500mm, being shaped as of the through hole on distribution gridCircle, diameter is 200mm, and hole centre-to-centre spacing is 400mm, and the number of through hole is by the board foot that distributesVery little decision.
Be 1000m at the wind gas-removing flow that enters oxidation unit3When/min, utilize hot line wind speedInstrument is measured the wind speed of each point on the interior cross section of oxidation unit. Measurement result shows, wind speed everywhere dividesWei 0.74m/s, 0.66m/s and 0.70m/s. The deviation of maximum, minimum of a value and mean flow rateRelative value is less than 10%.
Wind gas-removing flow is 500m3When/min, utilize hot-wire anemometer to measure in oxidation unitThe wind speed of each point on cross section. Wind speed maximum, minimum of a value and mean flow rate are everywhere respectively0.37m/s, 0.33m/s and 0.35m/s. Maximum, minimum of a value are relative with the deviation of mean flow rateValue is less than 10%.
The explanation of above embodiment is just for helping to understand method of the present invention and core think of thereofThink. It should be pointed out that for those skilled in the art, do not departing from thisUnder the prerequisite of bright principle, can also carry out some improvement and modification to the present invention, these improve andModify and also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field can be realizedOr use the present invention. The multiple amendment of these embodiment is come those skilled in the artSay it will will be apparent, General Principle as defined herein can do not depart from of the present inventionIn the situation of spirit or scope, realize in other embodiments. Therefore, the present invention will be not can be byBe limited to these embodiment shown in this article, but will meet and principle disclosed herein and newGrain husk feature the widest consistent scope.
Claims (5)
1. a distribution device in gas-fluid, comprising: changeover portion and distribution grid, described changeover portion is establishedBe equipped with gas feed and gas vent, described changeover portion inside is provided with a distribution grid or someBe separated by arrange distribution grid, described some be separated by arrange distribution grids go out along gas feed to gasThe direction of mouth is arranged successively, and the edge of each described distribution grid is connected with the inwall of described changeover portion,On described distribution grid, be provided with some through holes.
2. distribution device in gas-fluid according to claim 1, is characterized in that, near gasBetween the described distribution grid of body import and described gas feed, be provided with certain distance.
3. distribution device in gas-fluid according to claim 1, is characterized in that, if describedIn dry distribution grid, the number of distribution grid is more than or equal to 2.
4. distribution device in gas-fluid according to claim 1, is characterized in that, described logicalHole be shaped as one or more in circle, ellipse, rectangle, triangle and polygon.
5. distribution device in gas-fluid according to claim 1, is characterized in that, described mistakeThe section of crossing is the quadrangular increasing successively from gas feed to gas vent cross-sectional area or enters from gasThe round platform that mouth to gas vent cross-sectional area increases successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610151151.6A CN105597655A (en) | 2016-03-16 | 2016-03-16 | Gas distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610151151.6A CN105597655A (en) | 2016-03-16 | 2016-03-16 | Gas distribution device |
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| Publication Number | Publication Date |
|---|---|
| CN105597655A true CN105597655A (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610151151.6A Pending CN105597655A (en) | 2016-03-16 | 2016-03-16 | Gas distribution device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106540542A (en) * | 2016-12-12 | 2017-03-29 | 北京工业大学 | A kind of efficient SCR reactors of low dirt |
| CN107042046A (en) * | 2017-02-09 | 2017-08-15 | 河北宏达环境工程有限公司 | A kind of airflow distribution device of electrostatic fabric filter |
| CN116236978A (en) * | 2023-02-01 | 2023-06-09 | 北京石油化工学院 | Gas distributor and gas-solid reactor comprising same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2795517Y (en) * | 2005-05-31 | 2006-07-12 | 宝山钢铁股份有限公司 | Air flow distributor in large air flow pipeline system |
| CN202438412U (en) * | 2011-12-30 | 2012-09-19 | 福建龙净环保股份有限公司 | Uniformly distributing optimizing device of horn air flow at inlet of electric dust remover |
| CN205517795U (en) * | 2016-03-16 | 2016-08-31 | 北京化工大学 | Gas distributing device |
-
2016
- 2016-03-16 CN CN201610151151.6A patent/CN105597655A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2795517Y (en) * | 2005-05-31 | 2006-07-12 | 宝山钢铁股份有限公司 | Air flow distributor in large air flow pipeline system |
| CN202438412U (en) * | 2011-12-30 | 2012-09-19 | 福建龙净环保股份有限公司 | Uniformly distributing optimizing device of horn air flow at inlet of electric dust remover |
| CN205517795U (en) * | 2016-03-16 | 2016-08-31 | 北京化工大学 | Gas distributing device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106540542A (en) * | 2016-12-12 | 2017-03-29 | 北京工业大学 | A kind of efficient SCR reactors of low dirt |
| CN107042046A (en) * | 2017-02-09 | 2017-08-15 | 河北宏达环境工程有限公司 | A kind of airflow distribution device of electrostatic fabric filter |
| CN107042046B (en) * | 2017-02-09 | 2024-04-05 | 河北宏达环境工程有限公司 | Air flow distribution device of electric bag dust collector |
| CN116236978A (en) * | 2023-02-01 | 2023-06-09 | 北京石油化工学院 | Gas distributor and gas-solid reactor comprising same |
| CN116236978B (en) * | 2023-02-01 | 2023-09-22 | 北京石油化工学院 | Gas distributor and gas-solid reactor comprising same |
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Application publication date: 20160525 |
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