CN103060018A - Gas distributor for coal gas high-efficiency washing and cleaning technique, secondary coal gas washing tower, coal gas cleaning device and application thereof - Google Patents
Gas distributor for coal gas high-efficiency washing and cleaning technique, secondary coal gas washing tower, coal gas cleaning device and application thereof Download PDFInfo
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Abstract
The invention provides a gas distributor for a coal gas high-efficiency washing and cleaning technique, a secondary coal gas washing tower, a coal gas cleaning device and application thereof. The gas distributor (60) provided by the invention comprises a gas buffer chamber (240), a primary dedusting coal gas inlet pipe (26) and a gas distribution component (620), wherein the gas buffer chamber (240) is arranged on the bottom region of a secondary washing tower (2); the primary dedusting coal gas inlet pipe (26) penetrates through a side wall (22) of the secondary washing tower and is in the shape of an inverted horizontal L; the gas distribution component (620) comprises annular gas distribution pipelines (622, 623 and 624), a first connecting bridge (640), a second connecting bridge (660) and a gas duct (284); the annular gas distribution pipelines (622, 623 and 624), the first connecting bridge (640) and the second connecting bridge (660) are provided with a plurality of straight holes (628, 642 and 662); and the annular gas distribution pipelines (622, 623 and 624) and the straight holes (628) are provided with a plurality of tangential holes (626) in an alternately staggered mode.
Description
Technical field
The present invention relates in general to and belongs to the Coal Gasification Technology field, be specifically related to a kind of gas distributor for coal gas high-efficient washing purification process, the gas cleaning device that comprises it and application thereof, especially purification process and device and the application thereof of the coal gas produced of the pressurized gasification take coal, refinery coke, biomass, flammable trade waste as raw material.
Background technology
Take coal, refinery coke, biomass, flammable trade waste in the pressure gasifying gas of raw material, except containing CO and H
2Outside effective constituent, also contain CO
2, H
2O, H
2S, COS, CH
4, N
2, Ar, NH
3, the components such as HCN, HCl, HCOOH and lime-ash, the purpose that purify early stage is the NH that removes wherein
3, HCN, HCl, HCOOH and lime-ash etc., with for civilian use and further conversion, remove CO
2, H
2O, H
2S, COS, CH
4And deep processing.Especially for coal than the area of horn of plenty, oil relative shortage and national, for hydrogen source and coal gas, propelling DCL/Direct coal liquefaction and indirect liquefaction industry, development integrated gasification combined cycle plants (IGCC) generating are provided, early stage of coal gas, purification removed NH wherein
3, HCN, HCl, HCOOH and lime-ash will seem even more important.
A kind of gas cleaning system of " orifice or the Venturi scrubber, the back is with a kind of gas-liquid washing column " by Texaco Development Corporation's invention has been proposed in No. the 94117093.4th, the Chinese patent application.Practice shows, orifice or Venturi scrubber easily occur to stop up or fouling; Even without stopping up, coal gas process orifice or Venturi scrubber also can produce the Pressure Drop about 0.3MPa, have caused power loss, have increased process cost; Water phenomenon usually occurs in the gas-liquid washing column in this patent application, affects the normal operation of lower procedure such as conversion.
Propose in No. the 01112700.7th, the Chinese patent application, coal gas mixes with water in diluter first, then enters in the cyclonic separator major part is contained the clinker water separation, then enters washing tower and (is conventional knockout tower, comprise packing tower or tray column, preferred bubble-plate column in the tray column) washing.In this technique, cyclonic separator just separates the most of oarse-grained lime-ash in the coal gas, and therefore still some macrobead lime-ash and a large amount of fine grain coal ash grits are blown in the washing tower by high speed coal gas.If packing tower or bubble-plate column, its closely the slot on stacking provisions or the bubble-cap can cause a large amount of coal ash grits to stick deposition at filler or bubble-cap to cause at last stopping up, it will be no longer even that the air-flow of coal gas in filler or bubble-cap distributes, affected washing effect, increase the weight of again conversely obstruction, be unfavorable for production run steady in a long-term; If common tray column then can't reach good scrubbing dust collection effect for trickle grit.
No. the 200810018399.0th, Chinese patent application proposes following washing process: the washing tower recycle pump will be squeezed in the Venturi scrubber and mix from out-of-bounds raw gas from a part of Heisui River of washing tower Heisui River storage tank, then enter separator; Raw gas enters downtake via the separator gas inlet in separator, and the most of lime-ash in the raw gas etc. enters liquid phase and flows downward, and raw gas upwards flows, and carries out further water-dust removing through spiral board again; The coal gas after the one-level washing of going out from the separator gas exit afterwards, the water-bath that washing tower gas inlet by washing tower enters the washing tower bottom makes progress and flows, arrange on washing tower top in the some grades of tower trays with send into from the internal recycle import of washing tower Heisui River from a part of Heisui River of washing water recycle pump and the technique moisturizing that adds by the make up water entrance, counter current contact is washed, then upwards remove mist in the coal gas by the baffle plate demister on washing tower top, send into the subsequent conversion operation through the coal gas behind the washing tower secondary washing, purifying by the washing tower gas exit of washing tower, the Heisui River that washing tower produces enters black water treatment system by the outlet of washing tower Heisui River.In this technique, Venturi scrubber can have good washing effect at the initial stage of production run, but after after a while, Venturi scrubber often occurs to stop up or structure, its shower nozzle is serious wear gradually also, thereby affect widely the washing effect of its atomizing effect and washing effect and back washing tower, and Venturi scrubber often causes the large energy consumption of pressure drop high; In addition, on washing tower top some grades of tower trays are set, Heisui River at the bottom of one-level washing, purifying coal gas and the washing tower tower (by the transmission of washing water recycle pump) counter current contact is washed, because wash tower bottoms Heisui River is messy, the Heisui River mist that this mode of washing tends to that high speed coal gas is carried secretly and contains impurity passes through scum dredger, like this, one-level washing, purifying coal gas is not only further washed, and long-time past contact causes the scum dredger dust stratification to stop up; At last, simple tower tray washing is limited for the more fine grain dust removing effects in the coal gas.So this technique, can't reach the scrubbing dust collection effect that needs along with the increase of production run time.
The present invention has abandoned and has caused easy obstruction, easy to wear, easy fouling and the large Venturi scrubber of pressure drop, designed a kind of novel process that comprises the new installations such as atomisation unit, cyclonic separator, gas distributor and the spiral tower tray of spraying, purpose be to provide a kind of equipment manufacturing cost low, remove NH
3, HCN, HCl, HCOOH and grey slag dust efficient is high, overcomes that the existing pressure drop of prior art is large, energy consumption is high, the gas purification equipment of easy obstruction, the problem such as trickle grit decreasing ratio is low and the work period is short.
Summary of the invention
The problem that exists in order to solve prior art, the purpose of this invention is to provide a kind of gas distributor for the secondary washing tower of coal gas (smart washing tower), the existing easy obstruction of Venturi scrubber, easy to wear, easy fouling and the large problem of pressure drop that are adopted to overcome present technology, thus realize that equipment manufacturing cost is low, remove NH
3, HCN, HCl, HCOOH and grey slag dust efficient is high, overcomes that the existing pressure drop of prior art is large, energy consumption is high, easy obstruction, the defective such as trickle grit decreasing ratio is low and the work period is short.
Therefore, in one aspect, the invention provides the gas distributor of a kind of secondary washing tower of coal gas for coal gas high-efficient washing purification process (being coal gas essence washing tower).
The gas distributor of the secondary washing tower of coal gas for coal gas high-efficient washing purification process of the present invention is characterized in that, comprising:
1) gas buffer chamber is arranged on the bottom section of secondary washing tower, and it is made of the bottom of the water-bath that links to each other with the sidewall of secondary washing tower and the Heisui River vent pipe of its upper setting and bottom sidewall and the lower wall of secondary washing tower;
2) first dedusting gas entry pipe runs through the sidewall of secondary washing tower and is down horizontal " L " type, and its gas entry is arranged on outside the sidewall of secondary washing tower, and its gas exit is arranged on the gas buffer chamber interior and Open Side Down;
3) gas distribution member, it further comprises:
I) at least two annular gas distributed pipelines that roughly arrange with one heart;
Ii) at least the first cross structure and the second cross structure, be arranged between at least two annular gas distributed pipelines in the gas distribution member, the at least the first cross structure and the second cross structure inside are hollow, so that gas communication between at least two annular gas distributed pipelines; And
Iii) at least one airway, it is arranged in the water-bath and is communicated with the pipeline gas of the first cross structure so that with gas distribution member gas communication;
Wherein, at least two annular gas distributed pipelines in the gas distribution member are provided with a plurality of straight holes with at least the first cross structure and the second cross structure in its direction towards the water-bath bottom, and at least two annular gas distributed pipelines in the gas distribution member are provided with a plurality of tangential holes with a plurality of straight hole interleaved at it on the direction of water-bath bottom, the opening of a plurality of tangential holes is set to tilt laterally down.
Gas distributor of the present invention, wherein the first cross structure and the second cross structure inside are hollow, so that and gas communication between at least two annular gas distributed pipelines, from the water-gas of a plurality of straight holes ejections of arranging at its gas distribution member and at least the first cross structure and the second cross structure near rising annular gas distributed pipeline and the first cross structure and the second cross structure, and the gas that gushes out from a plurality of tangential holes that the gas distribution member arranges is because the structure that tangential hole tilts laterally, so that spray to the direction away from the annular gas distributed pipeline from the gas of tangential hole ejection, like this, so that water-gas in whole water-bath, obtain as far as possible to distribute uniformly reduce to a certain extent simultaneously again accumulate air pocket may.
Preferably, gas distributor of the present invention further comprises:
4) gas distributor strut member, it is arranged on the gas distribution member, washs on the inwall of tower side wall so that the gas distribution member is connected in the coal gas fine purifiation.
Preferably, wherein the gas distribution member is made of three annular gas distributed pipelines that roughly arrange with one heart, at least one airway be set to 2 airways and be symmetricly set on water-bath and the pipeline of the first cross structure on, and the described annular gas distributed pipeline ring-shaped cylinder structure that is hollow.
Preferably, wherein the bottom of water-bath is set to taper, and the Heisui River vent pipe that arranges on it is positioned at the central part of water-bath bottom.
Preferably, the diameter of a plurality of straight holes that wherein arrange at least two annular gas distributed pipelines is 5-80mm, and the length of side of a plurality of tangential holes is 5-80mm.More preferably, the diameter of a plurality of straight holes that arrange at least two annular gas distributed pipelines is 5-50mm, and the length of side of a plurality of tangential holes is 5-50mm.Further preferred, the diameter of a plurality of straight holes that arrange at least two annular gas distributed pipelines is 10-30mm, and the length of side of a plurality of tangential holes is 10-30mm.
Preferably, this annular gas distributed pipeline can be that vertical cross-section is the pipeline of circle, and its diameter is 30～300mm.Wherein the diameter of at least two annular gas distributed pipelines can be identical, also can be different.
This annular gas distributed pipeline also can be a hollow cylindrical structure, it is that annular, vertical cross-section are the forms of rectangle or foursquare hollow circuit cylinder for the horizontal section, difference of outside radius is 30～300mm in it, height is 100～1000mm, and its concrete size can be that the coal gas amount is determined according to practical situation and load.Wherein the difference of the interior outside radius of at least two annular gas distributed pipelines can be identical with height, also can be different.Preferably, wherein the gas distributor strut member is symmetricly set on the outer wall of gas distribution member at the bearing of trend of the first cross structure.
In yet another aspect, the invention provides the secondary washing tower of a kind of coal gas for gas purification, it is characterized in that, be provided with gas distributor of the present invention described above in the secondary gas wash tower.
Preferably, the secondary washing tower of coal gas of the present invention wherein also is provided with the circle type helical tray above the liquid level of the secondary washing tower of coal gas inside, and its top also is provided with the solid valve tower tray of multilayer, also is provided with Combined defoamer above the solid valve tower tray of multilayer.
Preferably, the circle type helical tray for gas wash tower of the present invention is characterized in that, comprising:
The spray column inlet duct, be arranged on gas wash tower top one side and with the tower wall perpendicular of gas wash tower, the spray column inlet duct further comprises the spray column entrance that extends the gas wash tower tower wall outside;
Spray column, it is connected with the approximate center perpendicular of spray column inlet duct at gas wash tower, and is evenly distributed with a plurality of spray holes around spray column; And
Helical tray main body, the inboard of helical tray main body are by the setting of spiraling on the initial lateral around spray column of its lower edge, and its outside engages with the inwall of gas wash tower.
Preferably, wherein the diameter of a plurality of spray holes of spray column is 0.2～10mm.More preferably, the diameter of spray holes is 2～8mm.Further preferred, the diameter of spray holes is 3～6mm.Most preferably, the diameter of spray holes is 3～5mm.
Preferably, wherein spray column extends beyond the lower end of helical tray main body downwards, and is provided with a plurality of spray holes in sidewall and bottom surface, lower end that spray column extends beyond helical tray main body lower end downwards.
More preferably, circle type helical tray of the present invention further comprises:
Liquid phase distributor, around the spray column setting, the inwall of described liquid phase distributor and gas wash tower is provided with certain intervals below the helical tray main body; And
Circle type combination bubble cap plate is arranged on below the liquid phase distributor and around spray column;
Wherein, spray column extends through central part one segment distance of liquid phase distributor and described circle type combination bubble cap plate downwards, and the spray column between liquid phase distributor and described circle type combination bubble cap plate does not arrange spray holes, and spray column extends through one section spray column of circle type combination bubble cap plate central part downwards and evenly is provided with a plurality of spray holes.
More preferably, wherein liquid phase distributor further comprises:
Annular liquid phase distribution plate is around the spray column setting, for being the annular recesses of certain width;
A plurality of intake chutes evenly are arranged on the outside of annular liquid phase distribution plate, its sidewall be higher than annular liquid phase distribution plate sidewall and with annular liquid phase distribution plate fluid connection; And
A plurality of cloth liquid mouths are arranged at respectively each ends away from annular liquid phase distribution plate of a plurality of intake chutes, and and the inwall of gas wash tower between have certain interval.
Preferably, wherein a plurality of intake chutes and a plurality of cloth liquid mouth are set to respectively four, six or eight, and a plurality of cloth liquid mouths are set to tubaeform.
Preferably, wherein circle type combination bubble cap plate further comprises:
The liquid passage falls, around the spray column setting, and and spray column between have the gap;
A plurality of round bubble-caps evenly are arranged on the periphery that falls the liquid passage; And
At least two-layer arc bubble-cap, around a plurality of round bubble-cap settings, every one deck of two-layer at least arc bubble-cap is even isolated annular, and the arc bubble-cap of the adjacent layers of two-layer at least arc bubble-cap is crisscross arranged;
Wherein, be provided with air rising hole in a plurality of round bubble-caps and the two-layer at least arc bubble-cap, and evenly be provided with a plurality of venting holes on the bubble-cap of two-layer at least arc bubble-cap.
Preferably, wherein two-layer at least arc bubble-cap is three layers of arc bubble-cap, and the arc bubble-cap of every one deck of two-layer at least arc bubble-cap is four, six or eight, correspondingly, staggers respectively about 45 °, 30 ° or 22.5 ° between the adjacent two layers arc bubble-cap of two-layer at least arc bubble-cap.Certainly, the arc bubble-cap of every one deck also can evenly be set to the arc bubble-cap of other numbers as required, also distinguishes interleaved setting between the adjacent two-layer arc bubble-cap and gets final product.
Preferably, wherein each correspondence of a plurality of cloth liquid mouths be arranged on circle type combination bubble cap plate two-layer at least arc bubble-cap outermost layer arc bubble-cap each section roughly the mid-way directly over.
In the third aspect, the invention provides a kind of device for gas purification, it is characterized in that, comprise: elementary gas wash tower and secondary gas wash tower, wherein be provided with the lower end of helical tray main body described above in the elementary gas wash tower with the circle type helical tray and at least one deck spray thrower that is positioned at circle type helical tray below of the lower end closed of spray column, wherein one deck spray thrower is symmetrically arranged with a plurality of spray throwers at least, and be provided with the lower end that gas distributor of the present invention described above and spray column extend beyond the helical tray main body downwards in the secondary gas wash tower, and at the circle type helical tray of the lower end closed of spray column.
Preferably, the below layering of the inner helical tray main body that arranges of elementary washing tower arranges two-layer buck atomized liquid spray thrower, every layer can be distributed with four, six, eight spray throwers symmetrically, so that the buck atomizing droplet carries out the humidification dedusting from each spray thrower ejection to coal gas.
Preferably, the device for gas purification of the present invention further comprises:
Primary cyclone is provided with raw gas import, gas exit, Heisui River outlet and washing water inlet; And
Secondary cyclone is provided with gas inlet, gas exit, grey water out and washing water inlet;
Wherein, the gas exit of primary cyclone is connected to the entrance of the downtake of elementary gas wash tower, and the entrance of secondary cyclone is connected with the gas exit of elementary gas wash tower, and the gas exit of secondary cyclone is connected to the entrance of the first dedusting gas entry pipe of secondary gas wash tower.
More preferably, the secondary stage purified tower is provided with the solid valve tower tray of multilayer above the spray column inlet duct, be provided with Combined defoamer above the solid valve tower tray of described multilayer.
More preferably, Combined defoamer is made of concave flow-guiding type screen foam remover and plate-fin entrainment separator.
In fourth aspect, the invention provides the application of a kind of gas distributor of the present invention in the purification of the coal gas that the pressurized gasification take coal, refinery coke, biomass and/or flammable trade waste as raw material is produced.
Aspect the 5th, the invention provides a kind of application of secondary gas wash tower in the purification of the coal gas that the pressurized gasification take coal, refinery coke, biomass and/or flammable trade waste as raw material is produced that comprises gas distributor of the present invention.
Aspect the 5th, the invention provides the application of the purification of the coal gas that a kind of device that is used for gas purification with secondary gas wash tower of comprising gas distributor of the present invention produces at the pressurized gasification take coal, refinery coke, biomass and/or flammable trade waste as raw material.
Description of drawings
Fig. 1 a shows according to the gas distribution member of the gas distributor of one embodiment of the present invention elevational schematic view along the Q1-Q1 line;
Fig. 1 b shows the gas distribution member of gas distributor of Fig. 1 a along the schematic top plan view of Q2-Q2 line;
Fig. 2 shows the vertical profile schematic diagram that comprises according to the secondary gas wash tower of the gas distributor of one embodiment of the present invention;
Fig. 3 shows the vertical profile schematic diagram that comprises according to the gas cleaning device of the gas distributor of one embodiment of the present invention;
Fig. 4 a shows the vertical profile schematic diagram according to the helical tray of the secondary gas wash tower of one embodiment of the present invention;
Fig. 4 b shows the vertical profile schematic diagram according to the helical tray of the elementary gas wash tower of another embodiment of the invention;
Comprise liquid phase distributor and circle type that Fig. 4 c shows the secondary gas wash tower according to the embodiment of the present invention of Fig. 4 a make up the vertical profile schematic diagram of the helical tray of bubble cap plate;
Fig. 5 shows the schematic diagram according to the liquid phase distributor of the secondary gas wash tower of one embodiment of the present invention, the sectional side elevation of liquid phase distributor is shown from top to bottom successively, along the vertical view of E-E line and the vertical profile runner schematic diagram of liquid phase distributor;
The circle type that Fig. 6 a shows according to the secondary gas wash tower of one embodiment of the present invention makes up bubble cap plate along the vertical view of F-F line; And
Fig. 6 b shows the front view according to the arc bubble-cap of the circle type combination bubble cap plate of the secondary gas wash tower of one embodiment of the present invention.
Embodiment
The specific embodiment of the present invention below is provided.Those skilled in the art should understand that wherein embodiment only is for illustrative purposes, should not be regarded as limiting by any way the scope of the invention defined by the claims.
Therefore, the invention provides a kind of gas distributor that is used for the secondary washing tower of coal gas for coal gas high-efficient washing purification process.
In an embodiment, the invention provides a kind of gas distributor 60 that is used for the secondary washing tower 2 of coal gas for coal gas high-efficient washing purification process, it is characterized in that, comprising:
1) the gas buffer chamber 240, are arranged on the bottom section of secondary washing tower 2, and it is made of the bottom 282 of the water-bath 280 that links to each other with the sidewall 22 of secondary washing tower 2 and bottom sidewall 22 and the lower wall 22 ' of the Heisui River vent pipe 242 that arranges on it and secondary washing tower 2;
2) first dedusting gas entry pipe 26 runs through the sidewall 22 of secondary washing tower 2 and is down horizontal " L " type, and its gas entry 262 is arranged on outside the sidewall 22 of secondary washing tower 2, and its gas exit 264 is arranged on 240 inside, gas buffer chamber and Open Side Down;
3) the gas distribution member 620, and it further comprises:
I) at least two annular gas distributed pipelines 622,623,624 that roughly arrange with one heart;
Ii) at least the first cross structure 640 and the second cross structure 660, be arranged at least two annular gas distributed pipelines 622 in the gas distribution member 620,623, between 624, the at least the first cross structure 640 and the second cross structure 660 inside are hollow, so that gas communication between at least two annular gas distributed pipelines; And
Iii) at least one airway 284, its be arranged in the water-bath 280 and with the first cross structure 640 cavitys in gas communication so that with gas distribution member 620 gas communications;
Wherein, at least two annular gas distributed pipelines 622 in the gas distribution member 620,623,624 are provided with a plurality of straight holes 628 with at least the first cross structure 640 and the second cross structure 660 in its direction towards water-bath 280 bottoms, 642,662, and at least two annular gas distributed pipelines 622 in the gas distribution member 620,623,624 are provided with a plurality of tangential holes 626 with a plurality of straight hole 628 interleaved at it on the direction of water-bath 280 bottoms, the opening of a plurality of tangential holes 626 is set to tilt laterally down.
In a preferred embodiment, gas distributor 60 further comprises:
4) the gas distributor strut member 680, and it is arranged on the gas distribution member 620, so that gas distribution member 620 is connected on the inwall of coal gas essence washing tower 2 sidewalls 22.
In a preferred embodiment, wherein gas distribution member 620 is made of three annular gas distributed pipelines that roughly arrange with one heart, at least one airway 284 be set to 2 airways 284 and be symmetricly set on water-bath 280 and the pipeline of the first cross structure 640 on.
In a preferred embodiment, wherein the bottom of water-bath 280 is set to taper, and the Heisui River vent pipe 242 that arranges on it is positioned at the central part of water-bath 280 bottoms.
In a preferred embodiment, the diameter of a plurality of straight holes 628 that wherein arrange at least two annular gas distributed pipelines 622,623,624 is 5-80mm, and the length of side of a plurality of tangential holes 626 is 5-80mm.More preferably, the diameter of a plurality of straight holes 628 that arrange at least two annular gas distributed pipelines is 5-50mm, and the length of side of a plurality of tangential holes 626 is 5-50mm.Further preferred, the diameter of a plurality of straight holes 628 that arrange at least two annular gas distributed pipelines is 10-30mm, and the length of side of a plurality of tangential holes 626 is 10-30mm.
In a preferred embodiment, this annular gas distributed pipeline can be that vertical cross-section is the pipeline of circle, and its diameter is 30～300mm.Wherein the diameter of at least two annular gas distributed pipelines 622,623,624 can be identical, also can be different.
In another preferred embodiment, this annular gas distributed pipeline also can be a hollow cylindrical structure, it is that annular, vertical cross-section are the forms of rectangle or foursquare hollow circuit cylinder for the horizontal section, difference of outside radius is 30～300mm in it, height is 100～1000mm, and concrete size can be that the coal gas amount is determined according to practical situation and load.Wherein the difference of the interior outside radius of at least two annular gas distributed pipelines 622,623,624 can be identical with height, also can be different.
In a preferred embodiment, wherein gas distributor strut member 680 is symmetricly set on the outer wall of gas distribution member 620 at the bearing of trend of the first cross structure 640.
In another embodiment, the invention provides the secondary washing tower 2 of a kind of coal gas for gas purification, it is characterized in that, be provided with gas distributor of the present invention 60 described above in the described secondary gas wash tower 2.
In a preferred embodiment, the secondary washing tower 2 of coal gas of the present invention, wherein above the liquid level 250 of the secondary washing tower of coal gas 2 inside, also be provided with circle type helical tray 10, its top also is provided with the solid valve tower tray 225 of multilayer, also is provided with Combined defoamer 290 above the solid valve tower tray 225 of multilayer.
In a preferred embodiment, the circle type helical tray 10 for secondary gas wash tower 2 of the present invention comprises:
Spray column inlet duct 202, be arranged on secondary gas wash tower 2 tops, one side and with tower wall 22 perpendicular of secondary gas wash tower 2, spray column inlet duct 202 further comprises the spray column entrance 204 that extends the secondary gas wash tower 2 tower walls outside;
Helical tray main body 102, by the setting of spiraling of its lower edge 104 initial laterals around spray column 206, its outside engages with the inwall 22 of secondary gas wash tower 2 in the inboard of helical tray main body 102.
In a preferred embodiment, wherein the diameter of a plurality of spray holes 208 of spray column 206 is 0.2～10mm.More preferably, the diameter of a plurality of spray holes 208 of spray column 206 is 2～8mm.Further preferably, the diameter of a plurality of spray holes 208 of spray column 206 is 3～6mm, is preferably 3-5mm.
In a preferred embodiment, wherein spray column 206 extends beyond the lower end of helical tray main body 102 downwards, and the sidewall and the bottom surface, lower end that extend beyond described helical tray main body 102 lower ends in the lower end of spray column 206 downwards are provided with a plurality of spray holes 208.
One more preferably in the embodiment, circle type helical tray 10 of the present invention further comprises:
Circle type combination bubble cap plate 50 is arranged on liquid phase distributor 30 belows and around spray column 206;
Wherein, spray column 206 extends through central part one segment distance of liquid phase distributor 30 and circle type combination bubble cap plate 50 downwards, and the spray column 206 between liquid phase distributor 30 and circle type combination bubble cap plate 50 does not arrange spray holes, and spray column 206 extends through side and the bottom surface, lower end of one section spray column of circle type combination bubble cap plate 50 central parts downwards and all evenly is provided with a plurality of spray holes 208.
One more preferably in the embodiment, wherein liquid phase distributor 30 further comprises:
Annular liquid phase distribution plate 302 arranges around spray column 206, for being the annular recesses of certain width;
A plurality of intake chutes 304 evenly are arranged on the outside of annular liquid phase distribution plate 302, its sidewall be sidewall that vertical wall 305 is higher than annular liquid phase distribution plate 302 be vertical wall 308 and with annular liquid phase distribution plate 302 fluid connections; And
A plurality of cloth liquid mouths 306 are arranged at respectively each ends away from annular liquid phase distribution plate 302 of a plurality of intake chutes 304, and with the inwall 12,22 of gas wash tower 1,2 between have certain interval.
One more preferably in the embodiment, wherein a plurality of intake chutes 304 are set to respectively four, six or eight with a plurality of cloth liquid mouths 306, and a plurality of cloth liquid mouths 306 are set to tubaeform, have flange 307.
One more preferably in the embodiment, wherein circle type combination bubble cap plate 50 further comprises:
Fall liquid passage 502, arrange around spray column 206, and and spray column 206 between have the gap;
A plurality of round bubble-caps 504 evenly are arranged on the periphery that falls liquid passage 502; And
At least two-layer arc bubble-cap 506 arranges around a plurality of round bubble-caps 504, and every one deck of two-layer at least arc bubble-cap 506 is even isolated annular, and the arc bubble-cap 506 of the adjacent layers of two-layer at least arc bubble-cap 506 is crisscross arranged;
Wherein, be provided with air rising hole 508 in a plurality of round bubble-caps 504 and the two-layer at least arc bubble-cap 506, and evenly be provided with a plurality of venting holes 510 on the bubble-cap of two-layer at least arc bubble-cap 506.
One more preferably in the embodiment, wherein two-layer at least arc bubble-cap 506 is three layers of arc bubble-cap 506, and the arc bubble-cap of every one deck of two-layer at least arc bubble-cap 506 is four, six or eight, correspondingly, stagger respectively about 45 °, 30 ° or 22.5 ° between the adjacent two layers arc bubble-cap 506 of two-layer at least arc bubble-cap 506.Certainly, the arc bubble-cap of every one deck also can evenly be set to the arc bubble-cap of other numbers as required, also distinguishes interleaved setting between the adjacent two-layer arc bubble-cap and gets final product.
One more preferably in the embodiment, wherein each correspondence of a plurality of cloth liquid mouths 306 be arranged on circle type combination bubble cap plate 50 two-layer at least arc bubble-cap 506 outermost layer arc bubble-cap each section roughly the mid-way directly over.Washing water can flow along arc bubble-cap both sides towards the interval between two sections arc bubble-caps after falling the outer of arc bubble-cap like this, the mid-way of washing water one deck arc bubble-cap under being flowed to by the interval between two sections arc bubble-caps afterwards, thereby the flow process that prolongs washing water.
In the another embodiment of the present invention, a kind of device 1000 for gas purification is provided, it is characterized in that, comprise: elementary gas wash tower 1 and secondary gas wash tower 2, wherein be provided with the lower end of helical tray main body 102 described above in the elementary gas wash tower 1 with the circle type helical tray 10 and at least one deck spray thrower 13 that is positioned at circle type helical tray below of the lower end closed of spray column 206, wherein one deck spray thrower 13 is symmetrically arranged with a plurality of spray throwers at least, and is provided with the lower end that gas distributor of the present invention 60 described above and spray column 206 extend beyond helical tray main body 102 downwards in the secondary gas wash tower 2, and extend beyond the circle type helical tray 10 that all evenly is provided with a plurality of spray holes 208 on the spray column side of helical tray main body 102 lower ends and the bottom surface, lower end downwards.
In a preferred embodiment, the below layering of the elementary washing tower 1 inner helical tray main body 102 that arranges arranges two-layer buck atomized liquid spray thrower 13, every layer can be distributed with four, six, eight spray throwers symmetrically, so that the buck atomizing droplet carries out the humidification dedusting from each spray thrower ejection to coal gas.
In another embodiment of the present invention, a kind of device 1000 for gas purification is provided, it is characterized in that, comprise: elementary gas wash tower 1 and secondary gas wash tower 2, wherein be provided with the lower end of helical tray main body 102 described above in the elementary gas wash tower 1 with the circle type helical tray 10 and at least one deck spray thrower that is positioned at circle type helical tray below of the lower end closed of spray column 206, wherein one deck spray thrower 13 is symmetrically arranged with a plurality of spray throwers at least, and is provided with the lower end that gas distributor of the present invention 60 described above and spray column 206 extend beyond helical tray main body 102 downwards in the secondary gas wash tower 2, and extend beyond the circle type helical tray 10 that all evenly is provided with a plurality of spray holes 208 on the spray column side of helical tray main body 102 lower ends and the bottom surface, lower end downwards.
In a preferred embodiment, the below layering of the elementary washing tower 1 inner helical tray main body 102 that arranges of the device 1000 for gas purification of the present invention arranges two-layer buck atomized liquid spray thrower 13, every layer can be distributed with four, six, eight spray throwers symmetrically, so that the buck atomizing droplet carries out the humidification dedusting from each spray thrower ejection to coal gas.
In a preferred embodiment, the device 1000 for gas purification of the present invention further comprises:
Primary cyclone 7 is provided with raw gas import 702, gas exit 704, Heisui River outlet 706 and washing water inlet 708; And
Secondary cyclone 9 is provided with gas inlet 902, gas exit 904, grey water out 906 and washing water inlet 908;
Wherein, the gas exit 704 of primary cyclone 7 is connected to the entrance of the downtake 16 of elementary gas wash tower 1, and the entrance of secondary cyclone 9 is connected with the gas exit 110 of elementary gas wash tower 1, and the gas exit 904 of secondary cyclone 9 is connected to the entrance of the first dedusting gas entry pipe 26 of secondary gas wash tower 2.
One more preferably in the embodiment, secondary washing tower 2 is provided with the solid valve tower tray 225 of multilayer above spray column inlet duct 202, be provided with Combined defoamer 290 above the solid valve tower tray 225 of multilayer.
One more preferably in the embodiment, Combined defoamer 290 is made of concave flow-guiding type screen foam remover 292 and plate-fin entrainment separator 294.
Referring to accompanying drawing the circle type helical tray for gas wash tower of the present invention and the device that is used for gas purification are specifically described.
As shown in Figure 2, gas distributor 60 of the present invention, it is arranged at the bottom of the secondary washing tower of coal gas (being smart washing tower) 2.Gas distributor 60 of the present invention comprises: gas buffer chamber 240, first dedusting gas entry pipe 26, gas distribution member 620, and gas distributor strut member 680.
Just dedusting gas entry pipe 26 runs through the sidewall 22 of secondary washing tower 2 and is down horizontal " L " type, and its gas entry 262 is arranged on outside the sidewall 22 of secondary washing tower 2, and its gas exit 264 is arranged on 240 inside, gas buffer chamber and Open Side Down.
Referring to Fig. 1 a and 1b, gas distribution member 620 comprises three annular gas distributed pipelines 622,623,624 that roughly arrange with one heart; The first cross structure 640 and the second cross structure 660; And airway 284.Certainly, annular gas distributed pipeline 622,623,624 also can be the annular gas distributed pipeline of other shapes of roughly arranging with one heart, and is as square, oval etc.Three annular gas distributed pipelines 622,623,624th, vertical cross-section are the pipeline of circle, and its diameter is 30～300mm.Its diameter can arrange as required, can be identical, and also can be different.
Certainly, gas distribution member 620 also can be according to the size of washing tower and coal gas treatment capacity by two or more, such as three, four, five annular gas distributed pipeline 622,623,624 formations such as grade that roughly arrange with one heart.
The first cross structure 640 and the second cross structure 660, its inside is cavity, with 622,623,624 gas communications are arranged on three annular gas distributed pipelines 622 in the gas distribution member 620, between 623,624, so that gas communication between three annular gas distributed pipelines.
Referring to Fig. 2, two airways 284 are arranged in the water-bath 280 and symmetries are connected to the first cross structure 640, with the gas communication in the first cross structure 640 cavitys so that with gas distribution member 620 gas communications.
Three annular gas distributed pipelines 622,623,624 in the gas distribution member 620 and the first cross structure 640 and the second cross structure 660 are provided with a plurality of straight holes 628,642,662 in its direction towards water-bath 280 bottoms.
Three annular gas distributed pipelines 622 in the gas distribution member 620,623,624 also are provided with a plurality of tangential holes 626 with a plurality of straight hole 628 interleaved at it on the direction of water-bath 280 bottoms, the opening of a plurality of tangential holes 626 is set to tilt laterally down.
Gas distributor strut member 680 is symmetricly set on the bearing of trend of gas distribution member 620, so that gas distribution member 620 symmetries are connected on the inwall of coal gas essence washing tower 2 sidewalls 22.
The bottom of water-bath 280 is set to taper, and the Heisui River vent pipe 242 that arranges on it is positioned at the central part of water-bath 280 bottoms.The diameter of a plurality of straight holes 628 that arrange on three annular gas distributed pipelines 622,623,624 is 5-80mm, and the length of side of a plurality of tangential holes 626 is 5-80mm.More preferably, the diameter of a plurality of straight holes 628 that arrange at least two annular gas distributed pipelines is 5-50mm, and the length of side of a plurality of tangential holes 626 is 5-50mm.Further preferred, the diameter of a plurality of straight holes 628 that arrange at least two annular gas distributed pipelines is 10-30mm, and the length of side of a plurality of tangential holes 626 is 10-30mm.The length of side of a plurality of straight holes and a plurality of tangential holes can be determined according to the size of the coal gas amount of processing.
Three annular gas distributed pipelines are that vertical cross-section is the pipeline of circle, and its diameter is 30～300mm.Wherein the diameter of three annular gas distributed pipelines 622,623,624 can be identical, also can be different.
Certainly, three annular gas distributed pipelines also can be that the horizontal section is that annular, vertical cross-section are the forms of rectangle or foursquare hollow circuit cylinder, difference of outside radius is 30～300mm in it, and height is 100～1000mm, and its concrete size can be that the coal gas amount is determined according to practical situation and load.Wherein the difference of the interior outside radius of three annular gas distributed pipelines 622,623,624 can be identical with height, also can be different.
Referring again to Fig. 2, enter in the gas buffer chamber 240 that the bottom of the secondary washing tower (being smart washing tower) 2 that comprises gas distributor of the present invention arranges by first dedusting gas entry pipe 26 through the coal gas after the elementary washing.
Such as Fig. 1 a, Fig. 1 b, Fig. 2 and shown in Figure 3, coal gas leaves the gas buffer chamber 240 that enters the setting of smart washing tower 2 bottoms by the gas exit 264 of dedusting gas entry pipe 26 at the beginning of the smart washing tower by the top exit 904 of secondary cyclone 9, then coal gas rises, enter gas distribution member 620 via airway 284, carry out the preliminary distribution of gas.
Then, the annular gas distributed pipeline 622 that roughly with one heart arrange of coal gas in passing through gas distribution member 620,623, the a plurality of downward opening straight hole 628 that evenly arranges on 624 and be tilted to outside tangential slot 626 ejections down with a plurality of opening straight holes 628 are arranged alternately, simultaneously also be provided with a plurality of straight holes 642 from the first cross structure 640 and the second cross structure 660 in its direction towards water-bath 280 bottoms, 662 ejections, enter the water-bath chamber 280 of smart washing tower 2, then upwards enter again the top of secondary washing tower 2.
In order to prevent resulting in blockage after the parking, straight hole 628 and tangential slot 626 openings all are set to perforate down.
Because straight hole 628,642,662 coal gas that gush out just rise by annular gas distributor gears 620, at two adjacent annular gas distributed pipelines 622,623, the coal gas that rises between the 624 or place of smart washing tower 2 inwalls 22 away from the straight hole is few, and coal gas is tilted to the tangential slot 626 backward outsides down, the outside towards two adjacent annular gas distributed pipelines 622 by opening, 623, the ejection of between 624 or inwall 22 places of smart washing tower 2, reach and make the equally distributed purpose of coal gas, the washing water of coal gas and washing tower 2 interior water-baths 280 produce larger contact area like this, thereby obtain better dust removing effects, and namely these intensive uniform straight holes and tangential slot are so that the large strand agglomerating coal gas of script is divided into a lot of thin strand of uniform coal gas in water-bath, increase the dedusting area, improved the efficient of water bath dust-removing.
Also because being tilted to outside tangential slot 626 rear-inclineds down by opening, coal gas sprays laterally, high pressure gas for the pressurized-gasification furnace generation, the washing water that will promote washing tower 2 interior water-baths 280 motion of spinning, and the washing water of water-bath promote the coal gas eddy flow conversely in the washing tower in the motion, promote that coal gas more evenly distributes, and because the lengthening in coal gas path, so that more water mass transfer with it, thereby better water bath dust-removing effect obtained.
As shown in Figure 2, from bottom to top, after coal gas leaves gas distributor 60, rise and pass liquid level 250, again circuitous pass two-layer tower tray 265 with from the 270 counter current contact dedustings of high pressure buck after the purification of black water treatment system, then pass the spraying area 276 of a steam condensate atomized liquid or de-salted water atomized liquid, then enter circle type combination bubble cap plate 50.
Shown in Fig. 6 a and Fig. 6 b, coal gas is from the narrow air rising hole 508 of circle type combination bubble cap plate 50 to rising, the part washing water by narrow air rising hole 508 toward descending both close contacts, adverse current dedusting.
Then coal gas passes the space between the tower wall 22 of liquid phase distributor 30 and secondary washing tower 2.Shown in Fig. 2, Fig. 4 b and 4c, coal gas is then along the helical tray main body 102 of spray column 206 to rising, steam condensate atomized liquid or de-salted water atomized liquid are from spray column 206 ejections, steam condensate or de-salted water flow down in opposite directions along helical tray main body 102 and coal gas simultaneously, thereby remove mist and the grit group of carrying secretly in the coal gas.
Refer again to accompanying drawing 2, Fig. 4 c, Fig. 5 and Fig. 6 a-6b, the washing water of being discharged by four tubaeform cloth liquid mouths 306 by intake chute 302 drop to the periphery on the circle type combination bubble cap plate 50, arc bubble-cap 506 is outer shellring shape, leaves the space and staggers 45 ° between every adjacent two layers arc bubble-cap; Between two adjacent arc bubble-caps the interval is arranged also in the same layer.Washing water circuitous flowing between the arc bubble-cap makes its flow process elongated like this, so that the residence time and the soak time of washing water on this tower tray lengthen, thereby so that can absorb in the coal gas more impurity with the liquid of small amount.
In order to make washing water flow to more equably decline liquid passage 502, circle type combination bubble cap plate 50 internal layers are set to round bubble-cap 504.When washing water flow down from falling liquid passage 502, run into steam condensate atomized liquid or the de-salted water atomized liquid of ejection, washing water are dispelled to be fallen, there are simultaneously the part washing water to be fallen by the air rising hole 508 in the bubble-cap, coal gas is upwards overflowed by a plurality of venting holes 510 that evenly arrange on the arc bubble-cap 504, steam condensate atomized liquid or de-salted water atomized liquid wash coal gas simultaneously with the washings that is scattered like this, so that the grit of cohesion falls very soon, reduce the dust content of gas that enters the upper strata tower tray, and dust content of gas is very low at this moment, does not therefore have the situation generation that gas dust stops up bubble-cap.
Coal gas continue again to rise through four layers of tower tray 225 and with steam condensate or de-salted water counter current contact, thereby further remove the mist of carrying secretly in the coal gas.Then, the Combined defoamer 290 of coal gas through being consisted of by concave flow-guiding type screen foam remover 292 and plate-fin entrainment separator 294, further remove mist, can obtain the low-down dustless coal gas of dustiness, system after the gas exit 210 of the secondary washing tower of dustless coal gas process is discharged and entered.
Through above a series of washing, remove original dustiness with regard to the trickle grit in the very low coal gas, so that the dustiness of coal gas is reduced to low-down level, Combined defoamer 290 stopping states will reduce greatly.
Different from Chinese patent 200810018399.0, the washings of the upper strata tower tray 225 in the inventive method overlaps 6.5MPa, produces effective gas (CO+H for list all with steam condensate or de-salted water
2) be 106,000NM
3Its consumption of the vapourizing furnace of/h is less, is approximately 5～60t/h, thereby has guaranteed the quality of gas washing, prevents that the high speed coal gas of low dust-laden from carrying the addle mist that contains impurity again secretly.Then the Combined defoamer 290 of coal gas through being made of concave flow-guiding type screen foam remover 292 and plate-fin entrainment separator 294 further removed mist, can obtain the low-down dustless coal gas of dustiness.
As shown in Figures 2 and 3, the top of smart washing tower 2 is gas exit 210, and dustless clean gas is gone to rear system (such as systems such as methyl alcohol conversion, low-temperature rectisols) thus; Essence washing tower 2 from up to down is provided with plate-fin entrainment separator 292 and concave flow-guiding type screen foam remover 294, next is respectively arranged with tower side steam condensate or de-salted water entrance 232, the solid valve tower tray 225 of some layers (mist of carrying secretly in the coal gas is sailed against the current, removed to coal gas through for example four layers of tower tray 225 with steam condensate or de-salted water), spray column 206; Steam condensate or de-salted water first with enter 80 atomizings of mixed aerosol device from the dustless clean gas of the compression of rear system and become steam condensate atomized liquid or de-salted water atomized liquid small droplets, then enter spray column 206 and in the space of narrow tower tray 10, spray high-density water smoke, this moment, coal gas continued on helical tray main body 102 screws, the high-density water smoke of ejection and coal gas are the near normal motion, in a single day steam condensate atomized liquid or de-salted water atomized liquid small droplets are sprayed onto trickle grit few in number like this, just can be at once and steam condensate atomized liquid or de-salted water atomized liquid small droplets or the cohesion of trickle grit of follow-up ejection, fall, subsequently by along the helical tray spiral and under steam condensate or de-salted water sweep away, reach the effect of smart dedusting.
The entrance of the grey water-circulating pump 230 of washing tower 2 is arranged on water-bath 280 tops and is lower than again liquid level 250 simultaneously, fully obtain recycle so that be in the buck few and cleaner than the solid particulate on top, it is discharged current 232 and is divided into following several roads stream strand: as the spray colunm 206 of going to elementary washing tower 1 is as spray water, go to primary cyclone 7 as the dedusting washing water, go to mixed aerosol device 80 as the atomizing water, go to coal gasifier as chilled water and go to secondary cyclone 9 as the dedusting washing water.
Referring to Fig. 3, device 1000 for gas purification of the present invention, comprise, elementary gas wash tower (coal gas is slightly washed tower) 1 and secondary gas wash tower (coal gas essence washing tower) 2 wherein is provided with gas distributor described above 60 in the cleaned coal gas wash tower 2.
With reference to Fig. 3, raw gas at first enters primary cyclone 7 through a plurality of raw gas imports 702, through cyclonic separation, after gas exit 704 discharges of its top setting, downtake 16 by elementary washing tower 1 enters elementary washing tower 1 again, coal gas upwards spirals upwards via the elementary washing tower 1 inner helical tray main body 102 such as the shown circle type helical tray 10 of Fig. 4 b that arranges, and the gas exit 110 that arranges from elementary washing tower 1 top is discharged.Wherein, the lower end of the elementary washing tower 1 inner helical tray main body 102 that arranges is with the lower end closed of spray column 206.
As shown in Figure 3, the below layering of the elementary washing tower 1 inner helical tray main body 102 that arranges arranges two-layer buck atomized liquid spray thrower 13, and every layer is distributed with four spray throwers symmetrically, and the buck atomizing droplet sprays from spray thrower, and coal gas is carried out the humidification dedusting.
The gas inlet 902 that the coal gas that the gas exit 110 that arranges from elementary washing tower 1 top is discharged then enters secondary cyclone 9, coal gas are through after the cyclone dust removal foam removal of secondary cyclone 9, and the coal gas from it gas exit 904 of section's setting is discharged.
Referring again to Fig. 2 and 3, coal gas enters the entrance of the first dedusting gas entry pipe 26 of smart washing tower (secondary washing tower) 2 bottoms setting, then upwards through gas distributor 60 described above, then coal gas continues upwards through passing combination bubble cap plate 50 and the helical tray 30 such as the shown circle type helical tray 10 of Fig. 4 c after the water-bath 280 again, spiral via the helical tray main body 102 of the secondary washing tower 2 inner circle type helical trays 10 that arrange again and upwards contact washing with the water smoke that is sprayed by spray column 206 with the water that flows down from helical tray main body 102, coal gas through washing makes progress via four layers of solid valve tower tray 225 and Combined defoamer 290 again, the purification gas exit 210 that arranges from secondary washing tower 2 tops is at last discharged, and sends into rear system.
The device that comprises the secondary washing tower of gas distributor coal gas of the present invention and be used for gas purification has been abandoned and has been caused easy obstruction, easy to wear, easy fouling and the large Venturi scrubber of pressure drop, designed a kind of novel process that comprises atomisation unit, cyclonic separator, even gas distribution device and the new installations such as spiral tower tray of spraying, purpose be to provide a kind of water saving, equipment manufacturing cost low, remove NH
3, HCN, HCl, HCOOH and grey slag dust efficient is high, overcomes that the existing pressure drop of prior art is large, energy consumption is high, easy obstruction, the problem such as trickle grit decreasing ratio is low and the work period is short.Be used for washing because ultrasonic spraying device only needs a small amount of water can spray a large amount of night fogs, greatly saved water, and water gaging all carry out internal recycle greatly, only need a small amount of moisturizing, so this technique water-saving performance is good.Last dustiness can drop to 0.1mg/m
3Below.
In another embodiment, the invention provides the application of a kind of gas distributor in the purification of the coal gas that the pressurized gasification take coal, refinery coke, biomass and/or flammable trade waste as raw material is produced.
In another embodiment, the invention provides the application of the purification of the coal gas that the secondary washing tower of coal gas that is used for gas purification that comprises gas distributor of the present invention produces at the pressurized gasification take coal, refinery coke, biomass and/or flammable trade waste as raw material.
In an embodiment again, the invention provides a kind of application of gas cleaning device in the purification of the coal gas that the pressurized gasification take coal, refinery coke, biomass and/or flammable trade waste as raw material is produced that comprises gas distributor of the present invention.
Although various embodiment of the present invention is described in context by embodiment, the present invention is not limited to this.Therefore, it is the restriction of the scope of the invention that above description should be used as, and scope of the present invention is limited by appended claim.It will be appreciated by those skilled in the art that in the situation that do not deviate from spirit of the present invention and can make various changes and change to the present invention, it all will fall within the scope of protection of the present invention.
Claims (12)
1. a gas distributor (60) that is used for the secondary washing tower of coal gas (2) is characterized in that, comprising:
1) gas buffer chamber (240), be arranged on the bottom section of described secondary washing tower (2), its bottom sidewall (22) and lower wall (22 ') by the bottom (282) of the water-bath (280) that links to each other with the sidewall (22) of described secondary washing tower (2) and the Heisui River vent pipe (242) that arranges on it and described secondary washing tower (2) consists of;
2) first dedusting gas entry pipe (26), run through the sidewall (22) of described secondary washing tower (2) and be down horizontal " L " type, its gas entry (262) is arranged on outside the sidewall (22) of described secondary washing tower (2), and its gas exit (264) is arranged on inside, described gas buffer chamber (240) and Open Side Down;
3) gas distribution member (620), it further comprises:
I) at least two annular gas distributed pipelines (622,623,624) that roughly arrange with one heart;
Ii) at least the first cross structure (640) and the second cross structure (660), be arranged at least two described annular gas distributed pipelines (622 in the described gas distribution member (620), 623,624) between, described at least the first cross structure (640) and the second cross structure (660) inside are hollow, so that gas communication between at least two described annular gas distributed pipelines; And
Iii) at least one airway (284), its be arranged in the described water-bath (280) and with described the first cross structure (640) cavity in gas communication so that with described gas distribution member (620) gas communication;
Wherein, at least two described annular gas distributed pipelines (622 in the described gas distribution member (620), 623,624) be provided with a plurality of straight holes (628 with described at least the first cross structure (640) and the second cross structure (660) in its direction towards described water-bath (280) bottom, 642,662), and at least two described annular gas distributed pipelines (622 in the described gas distribution member (620), 623,624) be provided with a plurality of tangential holes (626) with described a plurality of straight holes (628) interleaved at it on the direction of water-bath (280) bottom, the opening of described a plurality of tangential holes (626) is set to tilt laterally down.
2. gas distributor according to claim 1 (60) further comprises:
4) gas distributor strut member (680), it is arranged on the described gas distribution member (620), so that described gas distribution member (620) is connected on the inwall of sidewall (22) of described coal gas essence washing tower (2).
3. gas distributor according to claim 1 and 2 (60), wherein said gas distribution member (620) is by three annular gas distributed pipelines (622 that roughly arrange with one heart, 623,624) consist of, described at least one airway (284) is set to 2 airways (284) and is symmetricly set on the pipeline of described water-bath (280) and described the first cross structure (640), and described annular gas distributed pipeline (622,623,624) be the ring-shaped cylinder structure of hollow.
4. gas distributor according to claim 1 and 2 (60), the bottom of wherein said water-bath (280) is set to taper, and the described Heisui River vent pipe (242) that arranges on it is positioned at the central part of described water-bath (280) bottom.
5. gas distributor according to claim 1 and 2 (60), at least two described annular gas distributed pipelines (622 wherein, the diameter of the described a plurality of straight holes (628) that 623,624) arrange is 5-80mm, and the length of side of described a plurality of tangential holes (626) is 5-80mm.
6. gas distributor according to claim 1 and 2 (60), at least two described annular gas distributed pipelines (622 wherein, 623,624) be that vertical cross-section is the pipeline of circle, described annular gas distributed pipeline diameter is 30～300mm, wherein each diameter at least two described annular gas distributed pipelines (622,623,624) is identical or different.
7. gas distributor according to claim 1 and 2 (60), at least two described annular gas distributed pipelines (622 wherein, 623,624) be a hollow cylindrical structure, its horizontal section is rectangle or foursquare pipeline for annular, vertical cross-section, and difference of outside radius is 30～300mm in it, height is 100～1000mm, wherein the difference of outside radius is identical or different in each at least two described annular gas distributed pipelines (622,623,624).
8. gas distributor according to claim 2 (60), wherein said gas distributor strut member (680) is stretched on the outer wall that direction is symmetricly set on described gas distribution member (620) at described the first cross structure (640).
9. a secondary gas wash tower (2) that is used for gas purification is characterized in that, is provided with each described gas distributor (60) of claim 1-8 in the described secondary gas wash tower (2).
10. secondary gas wash tower according to claim 9 (2), wherein also be provided with circle type helical tray (10) in inner liquid level (250) side of described secondary gas wash tower (2), its top also is provided with the solid valve tower tray (225) of multilayer, also is provided with Combined defoamer (290) in the top of the solid valve tower tray (225) of described multilayer.
11. device (1000) that is used for gas purification, it is characterized in that, comprise, elementary gas wash tower (1) and secondary gas wash tower (2) are provided with each described gas distributor (60) of claim 1-8 in the wherein said secondary gas wash tower (2).
12. according to claim 1-8 each described gas distributor (60) or according to claim 9-10 each described for gas purification secondary gas wash tower (2) or the application of the purification of the coal gas produced at the pressurized gasification take coal, refinery coke, biomass and/or flammable trade waste as raw material of the device for gas purification according to claim 11 (1000).
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| CN104761041A (en) * | 2014-01-08 | 2015-07-08 | 万华化学集团股份有限公司 | Catalytic wet oxidation treatment reaction tower and method and device for treating high-concentration organic wastewater by using same |
| CN104531231A (en) * | 2014-12-25 | 2015-04-22 | 清华大学 | High-efficiency composite carbon black washing tower for high-ash-content coal gasification |
| CN107252615A (en) * | 2017-07-19 | 2017-10-17 | 铜陵泰富特种材料有限公司 | Gas distributor and adsorption tower |
| CN107252615B (en) * | 2017-07-19 | 2020-12-22 | 铜陵泰富特种材料有限公司 | Gas distributor and adsorption tower |
| CN108261988A (en) * | 2018-03-30 | 2018-07-10 | 中国海洋石油集团有限公司 | A kind of gas distributor and the system comprising the gas distributor |
| CN108261988B (en) * | 2018-03-30 | 2021-06-04 | 中国海洋石油集团有限公司 | Gas distributor and system comprising same |
| CN114650875A (en) * | 2020-09-17 | 2022-06-21 | 株式会社Lg化学 | Distributor and reactor comprising same |
| CN114650875B (en) * | 2020-09-17 | 2024-05-17 | 株式会社Lg化学 | Distributor and reactor comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103060018B (en) | 2014-04-16 |
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