CN103060018B - 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 Coal Gasification Technology field, be specifically related to a kind of gas distributor for coal gas high-efficient washing process for purifying, the gas cleaning device that comprises it and application thereof, process for purifying and device and the application thereof of the coal gas that especially pressurized gasification take coal, petroleum coke, living beings, flammable trade waste as raw material is produced.
Background technology
Take coal, petroleum coke, living beings, flammable trade waste in the pressure gasifying gas of raw material, except containing CO and H
2outside active ingredient, also contain CO
2, H
2o, H
2s, COS, CH
4, N
2, Ar, NH
3, the component such as HCN, HCl, HCOOH and lime-ash, the object that purify early stage is the NH removing 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 compared with horn of plenty, oil relative shortage area 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, purify the NH removing wherein the early stage of coal gas
3, HCN, HCl, HCOOH and lime-ash will seem even more important.
The gas cleaning system of a kind of " orifice or the Venturi scrubber, after with a kind of gas-liquid column scrubber " invented by Texaco Development Corporation has been proposed in No. 94117093.4th, Chinese patent application.Practice shows, orifice or Venturi scrubber easily occur to stop up or fouling; Even without stopping up, coal gas also can produce the Pressure Drop of 0.3MPa left and right through orifice or Venturi scrubber, caused energy loss, has increased operating cost; Usually there is water phenomenon in the gas-liquid column scrubber in this patent application, affects lower procedure as the normal operation of conversion.
In No. 01112700.7th, Chinese patent application, propose, coal gas first mixes with water in diluter, then enter in cyclone separator major part is separated containing clinker water, then entering scrubbing tower (is conventional knockout tower, comprise packed tower or plate column, preferred bubble column in plate column) washing.In this technique, cyclone separator just separates oarse-grained the major part in coal gas lime-ash, and therefore still some bulky grain lime-ash and a large amount of fine grain coal ash grits are blown in scrubbing tower by high speed coal gas.If packed tower or bubble column, its closely the slot on stacking provisions or bubble-cap can cause a large amount of coal ash grits on filler or bubble-cap, to stick deposition finally to cause stopping up, it will be no longer even that the air-flow of coal gas in filler or bubble-cap distributes, affected clean result, increase the weight of again conversely obstruction, be unfavorable for production run steady in a long-term; If common plate column cannot reach good cleaning dust effect for trickle grit.
Chinese patent application proposes following washing process No. 200810018399.0: scrubbing tower circulating pump, by squeezing in Venturi scrubber with from raw gas out-of-bounds and mix from a part of Heisui River of scrubbing tower Heisui River storage tank, then enters separator, in separator, raw gas enters down-comer via separator gas inlet, and the most of lime-ash in raw gas etc. enters liquid phase and flows downward, and raw gas upwards flows, then carries out further water-dust removing through spiral board, the coal gas after one-level washing of going out from separator gas exit afterwards, by the scrubbing tower gas inlet of scrubbing tower, enter the water-bath of scrubbing tower bottom and upwards flow, on scrubbing tower top, arrange in some grades of tower trays with the import that circulates in scrubbing tower Heisui River send into from a part of Heisui River of washings circulating pump and the technique moisturizing that adds by supplementing water entrance, counter current contacting is washed, then upwards by the baffle plate demister on scrubbing tower top, remove the mist in coal gas, coal gas after scrubbing tower secondary washing, purifying is sent into subsequent conversion operation by the scrubbing tower gas exit of scrubbing tower, the Heisui River that scrubbing tower produces enters black water treatment system by the outlet of scrubbing tower Heisui River.In this technique, Venturi scrubber can have good clean result at the initial stage of production run, but after after a while, Venturi scrubber often occurs to stop up or structure, also serious wear gradually of its shower nozzle, thereby affect widely its atomizing effect and clean result and the clean result of scrubbing tower below, and Venturi scrubber often causes the large energy consumption of pressure drop high; In addition, on scrubbing tower top, some grades of tower trays are set, Heisui River at the bottom of one-level washing, purifying coal gas and scrubbing tower tower (transmitting by washings circulating pump) counter current contacting 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 demister, like this, one-level washing, purifying coal gas is not only further washed, and long-time past contact causes demister dust stratification to stop up; Finally, simple tower tray washing is limited for the dust removing effects of the relatively fine particle in coal gas.So this technique along with the increase of production run time, cannot reach the cleaning dust effect needing.
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 new technology that comprises the new equipments such as atomising device, cyclone separator, gas distributor and the spiral tower tray of spraying, object be to provide a kind of equipment manufacturing cost low, remove NH
3, HCN, HCl, HCOOH and grey slag dust efficiency high, overcome that the existing pressure drop of prior art is large, energy consumption is high, the gas purification equipment of the problem such as low and work period of easy obstruction, trickle grit removal efficiency is short.
Summary of the invention
The problem existing in order to solve prior art, the object of this invention is to provide a kind of gas distributor for the secondary scrubbing tower of coal gas (smart scrubbing tower), the existing easy obstruction of Venturi scrubber, easy to wear, easy fouling and the large problem of pressure drop that to overcome current technology, are adopted, thus realize equipment manufacturing cost low, remove NH
3, HCN, HCl, HCOOH and grey slag dust efficiency high, overcome that the existing pressure drop of prior art is large, energy consumption is high, the defect such as low and work period of easy obstruction, trickle grit removal efficiency is short.
Therefore, in one aspect, the invention provides the gas distributor of a kind of secondary scrubbing tower of coal gas for coal gas high-efficient washing process for purifying (being coal gas essence scrubbing tower).
The gas distributor of the secondary scrubbing tower of coal gas for coal gas high-efficient washing process for purifying of the present invention, is characterized in that, comprising:
1) gas buffer chamber, is arranged on the bottom section of secondary scrubbing tower, and its bottom by the water-bath being connected with the sidewall of secondary scrubbing tower and the Heisui River discharge pipe of its upper setting and bottom sidewall and the lower wall of secondary scrubbing tower form;
2) first dedusting gas entry pipe, runs through the sidewall of secondary scrubbing tower and is down horizontal " L " type, and its gas entry is arranged on outside the sidewall of secondary scrubbing tower, and its gas exit is arranged on gas buffer chamber interior and Open Side Down;
3) distribution of gas member, it further comprises:
I) at least two annular gas distributed pipelines that roughly arrange with one heart;
Ii) at least the first connecting bridge and the second connecting bridge, be arranged between at least two annular gas distributed pipelines in distribution of gas member, the at least the first connecting bridge and the second connecting bridge inside are hollow, and gas between at least two annular gas distributed pipelines is communicated with; And
Iii) at least one wireway, it is arranged in water-bath and is communicated with the pipeline gas of the first connecting bridge, makes to be communicated with distribution of gas member gas;
Wherein, at least two annular gas distributed pipelines in distribution of gas member are provided with multiple straight holes at it with at least the first connecting bridge and the second connecting bridge in the direction of water-bath bottom, and at least two annular gas distributed pipelines in distribution of gas member are provided with multiple tangential holes with multiple straight hole interleaved at it in the direction of water-bath bottom, and the opening of multiple tangential holes is set to tilt laterally down.
Gas distributor of the present invention, wherein the first connecting bridge and the second connecting bridge inside are hollow, gas between at least two annular gas distributed pipelines is communicated with, from the water-gas of multiple straight holes ejections of arranging in its distribution of gas member and at least the first connecting bridge and the second connecting bridge near rising annular gas distributed pipeline and the first connecting bridge and the second connecting bridge, and the structure that the gas that the multiple tangential holes that arrange from distribution of gas member gush out tilts laterally due to tangential hole, make from the gas of tangential hole ejection to the direction ejection away from annular gas distributed pipeline, like this, the acquisition while of distribution uniformly reduces the possibility that again accumulates air pocket to a certain extent as far as possible in whole water-bath to make water-gas.
Preferably, gas distributor of the present invention, further comprises:
4) gas distributor support member, it is arranged on distribution of gas member, makes distribution of gas member be connected in coal gas fine purifiation and washs on the inwall of tower side wall.
Preferably, wherein distribution of gas member consists of three annular gas distributed pipelines that roughly arrange with one heart, at least one wireway be set to 2 wireways and be symmetricly set on water-bath and the pipeline of the first connecting bridge 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 discharge pipe arranging on it is positioned at the central part of water-bath bottom.
Preferably, the diameter of the multiple straight holes that wherein arrange at least two annular gas distributed pipelines is 5-80mm, and the length of side of multiple tangential holes is 5-80mm.More preferably, the diameter of the multiple straight holes that arrange at least two annular gas distributed pipelines is 5-50mm, and the length of side of multiple tangential holes is 5-50mm.Further preferably, the diameter of the multiple straight holes that arrange at least two annular gas distributed pipelines is 10-30mm, and the length of side of multiple 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 can be also a hollow cylindrical structure, it is for horizontal cross-section is annular, vertical cross-section is the form of rectangle or foursquare hollow circuit cylinder, in it, the difference of outer radius is 30～300mm, height is 100～1000mm, and its concrete size can be that coal gas amount is determined according to actual conditions and load.Wherein the difference of the interior outer radius of at least two annular gas distributed pipelines and height can be identical, also can be different.Preferably, wherein gas distributor support member is symmetricly set on the outer wall of distribution of gas member on the bearing of trend of the first connecting bridge.
In yet another aspect, the invention provides the secondary scrubbing tower of a kind of coal gas for gas purification, it is characterized in that, in secondary scrubber, be provided with gas distributor of the present invention described above.
Preferably, the secondary scrubbing tower of coal gas of the present invention is wherein also provided with circle type helical tray above the liquid level of the secondary scrubbing tower of coal gas inside, and its top is also provided with the solid valve tower tray of multilayer, above the solid valve tower tray of multilayer, is also provided with Combined defoamer.
Preferably, the circle type helical tray for scrubber of the present invention, is characterized in that, comprising:
Spray column inlet duct, is arranged on scrubber top one side the tower wall perpendicular with scrubber, and spray column inlet duct further comprises the spray column entrance that extends scrubber tower wall outside;
Spray column, it is connected in the approximate center perpendicular of scrubber with spray column inlet duct, and is evenly distributed with multiple spray holes in the surrounding of spray column; And
Helical tray main body, the inner side of helical tray main body is by the setting of spiraling on the initial lateral around spray column of its lower edge, and its outside engages with the inwall of scrubber.
Preferably, wherein the diameter of multiple spray holes of spray column is 0.2～10mm.More preferably, the diameter of spray holes is 2～8mm.Further preferably, 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 extends beyond downwards on the sidewall of helical tray main body lower end and bottom surface, lower end and be provided with multiple spray holes at spray column.
More preferably, circle type helical tray of the present invention, further comprises:
Liquid phase distributor, below helical tray main body, around spray column setting, the inwall of described liquid phase distributor and scrubber is provided with certain intervals; And
Circle type combination bubble cap plate, is arranged on below 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 of spray column of circle type combination bubble cap plate central part downwards and is evenly provided with multiple spray holes.
More preferably, wherein liquid phase distributor further comprises:
Annular liquid phase distribution plate, around spray column setting, for being the annular groove of certain width;
Multiple intake chutes, are evenly arranged on the outside of annular liquid phase distribution plate, its sidewall higher than the sidewall of annular liquid phase distribution plate and with annular liquid phase distribution plate fluid connection; And
Multiple cloth liquid mouths, are arranged at respectively each one end away from annular liquid phase distribution plate of multiple intake chutes, and and the inwall of scrubber between there is certain interval.
Preferably, wherein multiple intake chutes and multiple cloth liquid mouth are set to respectively four, six or eight, and multiple cloth liquid mouths are set to tubaeform.
Preferably, wherein circle type combination bubble cap plate further comprises:
Liquid passage falls, around spray column setting, and and spray column between there is gap;
Multiple round bubble-caps, are evenly arranged on the periphery that falls liquid passage; And
At least two-layer arc bubble-cap, around multiple round bubble-cap settings, every one deck of at least two-layer arc bubble-cap is even isolated annular, and the arc bubble-cap of the adjacent layer of at least two-layer arc bubble-cap is crisscross arranged;
Wherein, in multiple round bubble-caps and at least two-layer arc bubble-cap, be provided with air rising hole, and be evenly provided with multiple steam vents on the bubble-cap of at least two-layer arc bubble-cap.
Preferably, wherein at least two-layer arc bubble-cap is three layers of arc bubble-cap, and the arc bubble-cap of every one deck of at least two-layer arc bubble-cap is four, six or eight, correspondingly, between the adjacent two layers arc bubble-cap of at least two-layer arc bubble-cap, stagger respectively about 45 °, 30 ° or 22.5 °.Certainly, the arc bubble-cap of every one deck also can evenly be set to the arc bubble-cap of other numbers as required, between adjacent two-layer arc bubble-cap, also distinguishes interleaved setting.
Preferably, wherein each correspondence of multiple cloth liquid mouths be arranged at least two-layer arc bubble-cap of circle type combination bubble cap plate outermost layer arc bubble-cap each section roughly centre position directly over.
In the third aspect, the invention provides a kind of device for gas purification, it is characterized in that, comprise: elementary scrubber and secondary scrubber, wherein in elementary scrubber, be provided with the lower end of helical tray main body described above by the circle type helical tray of the lower end closed of spray column and at least one deck spray thrower that is positioned at circle type helical tray below, wherein at least one deck spray thrower is symmetrically arranged with multiple spray throwers, and in secondary scrubber, be provided with gas distributor of the present invention described above and spray column and extend beyond the lower end of helical tray main body downwards, 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 arranging of elementary scrubbing tower arranges two-layer buck atomized liquid spray thrower, every layer can be distributed with four, six, eight spray throwers symmetrically, makes buck atomized drop from each spray thrower ejection, and coal gas is carried out to humidification dedusting.
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 down-comer of elementary scrubber, and the entrance of secondary cyclone and the gas exit of elementary scrubber are connected, the gas exit of secondary cyclone is connected to the entrance of the first dedusting gas entry pipe of secondary scrubber.
More preferably, secondary stage purified tower is provided with the solid valve tower tray of multilayer above spray column inlet duct, above the solid valve tower tray of described multilayer, is provided with Combined defoamer.
More preferably, Combined defoamer consists 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 of the pressurized gasification production take coal, petroleum coke, living beings and/or flammable trade waste as raw material.
Aspect the 5th, the invention provides the application in the purification of the coal gas that a kind of secondary scrubber that comprises gas distributor of the present invention produces at the pressurized gasification take coal, petroleum coke, living beings and/or flammable trade waste as raw material.
Aspect the 5th, the invention provides the application of the purification of the coal gas that a kind of device for gas purification with the secondary scrubber that comprises gas distributor of the present invention produces at the pressurized gasification take coal, petroleum coke, living beings and/or flammable trade waste as raw material.
Accompanying drawing explanation
Fig. 1 a shows the elevational schematic view along Q1-Q1 line according to the distribution of gas member of the gas distributor of one embodiment of the present invention;
Fig. 1 b shows the distribution of gas 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 comprising according to the secondary scrubber of the gas distributor of one embodiment of the present invention;
Fig. 3 shows the vertical profile schematic diagram comprising 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 scrubber of one embodiment of the present invention;
Fig. 4 b shows the vertical profile schematic diagram according to the helical tray of the elementary scrubber of another embodiment of the invention;
Fig. 4 c shows the vertical profile schematic diagram of the helical tray that comprises liquid phase distributor and circle type combination bubble cap plate of the secondary scrubber according to the embodiment of the present invention of Fig. 4 a;
Fig. 5 shows according to the schematic diagram of the liquid phase distributor of the secondary scrubber of one embodiment of the present invention, the sectional side elevation of liquid phase distributor is shown from top to bottom successively, along the top view of E-E line and the vertical profile runner schematic diagram of liquid phase distributor;
Fig. 6 a shows the top view along F-F line according to the circle type combination bubble cap plate of the secondary scrubber of one embodiment of the present invention; And
Fig. 6 b shows according to the front view of the arc bubble-cap of the circle type combination bubble cap plate of the secondary scrubber of one embodiment of the present invention.
The specific embodiment
The specific embodiment of the present invention is below provided.Those skilled in the art should understand that wherein embodiment is only 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 for the secondary scrubbing tower of coal gas for coal gas high-efficient washing process for purifying.
In a specific embodiment, the invention provides a kind of gas distributor 60 for the secondary scrubbing tower 2 of coal gas for coal gas high-efficient washing process for purifying, it is characterized in that, comprising:
1) gas buffer chamber 240, be arranged on the bottom section of secondary scrubbing tower 2, its bottom sidewall 22 by the bottom 282 of the water-bath 280 being connected with the sidewall 22 of secondary scrubbing tower 2 and the Heisui River discharge pipe 242 arranging on it and secondary scrubbing tower 2 and lower wall 22 ' form;
2) first dedusting gas entry pipe 26, runs through the sidewall 22 of secondary scrubbing tower 2 and is down horizontal " L " type, and its gas entry 262 is arranged on outside the sidewall 22 of secondary scrubbing tower 2, and its gas exit 264 is arranged on 240 inside, gas buffer chamber and Open Side Down;
3) distribution of gas 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 connecting bridge 640 and the second connecting bridge 660, be arranged at least two annular gas distributed pipelines 622 in distribution of gas member 620,623, between 624, the at least the first connecting bridge 640 and the second connecting bridge 660 inside are hollow, and gas between at least two annular gas distributed pipelines is communicated with; And
Iii) at least one wireway 284, it is arranged in water-bath 280 and is communicated with the gas in the first connecting bridge 640 cavitys, makes to be communicated with distribution of gas member 620 gases;
Wherein, at least two annular gas distributed pipelines 622 in distribution of gas member 620,623,624 are provided with multiple straight holes 628 with at least the first connecting bridge 640 and the second connecting bridge 660 in the direction of water-bath 280 bottoms at it, 642,662, and at least two annular gas distributed pipelines 622 in distribution of gas member 620,623,624 are provided with multiple tangential holes 626 with multiple straight hole 628 interleaved at it in the direction of water-bath 280 bottoms, and the opening of multiple tangential holes 626 is set to tilt laterally down.
In a preferred embodiment, gas distributor 60, further comprises:
4) gas distributor support member 680, it is arranged on distribution of gas member 620, and distribution of gas member 620 is connected on the inwall of coal gas essence scrubbing tower 2 sidewalls 22.
In a preferred embodiment, wherein distribution of gas member 620 consists of three annular gas distributed pipelines that roughly arrange with one heart, at least one wireway 284 be set to 2 wireways 284 and be symmetricly set on water-bath 280 and the pipeline of the first connecting bridge 640 on.
In a preferred embodiment, wherein the bottom of water-bath 280 is set to taper, and the Heisui River discharge pipe 242 arranging on it is positioned at the central part of water-bath 280 bottoms.
In a preferred embodiment, the diameter of the multiple 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 multiple tangential holes 626 is 5-80mm.More preferably, the diameter of the multiple straight holes 628 that arrange at least two annular gas distributed pipelines is 5-50mm, and the length of side of multiple tangential holes 626 is 5-50mm.Further preferably, the diameter of the multiple straight holes 628 that arrange at least two annular gas distributed pipelines is 10-30mm, and the length of side of multiple 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 can be also a hollow cylindrical structure, it is for horizontal cross-section is annular, vertical cross-section is the form of rectangle or foursquare hollow circuit cylinder, in it, the difference of outer radius is 30～300mm, height is 100～1000mm, and concrete size can be that coal gas amount is determined according to actual conditions and load.Wherein the difference of the interior outer radius of at least two annular gas distributed pipelines 622,623,624 and height can be identical, also can be different.
In a preferred embodiment, wherein gas distributor support member 680 is symmetricly set on the outer wall of distribution of gas member 620 on the bearing of trend of the first connecting bridge 640.
In another embodiment, the invention provides the secondary scrubbing tower 2 of a kind of coal gas for gas purification, it is characterized in that, in described secondary scrubber 2, be provided with gas distributor of the present invention 60 described above.
In a preferred embodiment, the secondary scrubbing tower 2 of coal gas of the present invention, wherein above the liquid level 250 of the secondary scrubbing tower of coal gas 2 inside, be also provided with circle type helical tray 10, its top is also provided with the solid valve tower tray 225 of multilayer, above the solid valve tower tray 225 of multilayer, is also provided with Combined defoamer 290.
In a preferred embodiment, the circle type helical tray 10 for secondary scrubber 2 of the present invention, comprising:
Spray column inlet duct 202, is arranged on secondary scrubber 2 top one sides tower wall 22 perpendicular with secondary scrubber 2, and spray column inlet duct 202 further comprises the spray column entrance 204 that extends secondary scrubber 2 tower wall outsides;
Helical tray main body 102, the setting of spiraling on by the initial lateral around spray column 206 of its lower edge 104 in the inner side of helical tray main body 102, its outside engages with the inwall 22 of secondary scrubber 2.
In a preferred embodiment, wherein the diameter of multiple spray holes 208 of spray column 206 is 0.2～10mm.More preferably, the diameter of multiple spray holes 208 of spray column 206 is 2～8mm.Further preferably, the diameter of multiple 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 extends beyond downwards on the sidewall of described helical tray main body 102 lower ends and bottom surface, lower end and be provided with multiple spray holes 208 in the lower end of spray column 206.
One, more preferably in 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 of spray column of circle type combination bubble cap plate 50 central parts downwards and is all evenly provided with multiple spray holes 208.
One, more preferably in embodiment, wherein liquid phase distributor 30 further comprises:
Annular liquid phase distribution plate 302, arranges around spray column 206, for being the annular groove of certain width;
Multiple cloth liquid mouths 306, are arranged at respectively each one end away from annular liquid phase distribution plate 302 of multiple intake chutes 304, and with the inwall 12,22 of scrubber 1,2 between there is certain interval.
One, more preferably in embodiment, wherein multiple intake chutes 304 are set to respectively four, six or eight with multiple cloth liquid mouths 306, and multiple cloth liquid mouths 306 are set to tubaeform, have flange 307.
One, more preferably in embodiment, wherein circle type combination bubble cap plate 50 further comprises:
Fall liquid passage 502, around spray column 206, arrange, and and spray column 206 between there is gap;
Multiple round bubble-caps 504, are evenly arranged on the periphery that falls liquid passage 502; And
At least two-layer arc bubble-cap 506, arranges around multiple round bubble-caps 504, and every one deck of at least two-layer arc bubble-cap 506 is even isolated annular, and the arc bubble-cap 506 of the adjacent layer of at least two-layer arc bubble-cap 506 is crisscross arranged;
Wherein, in multiple round bubble-caps 504 and at least two-layer arc bubble-cap 506, be provided with air rising hole 508, and on the bubble-cap of at least two-layer arc bubble-cap 506, be evenly provided with multiple steam vents 510.
One more preferably in embodiment, wherein at least two-layer arc bubble-cap 506 is three layers of arc bubble-cap 506, and the arc bubble-cap of every one deck of at least two-layer arc bubble-cap 506 is four, six or eight, correspondingly, between the adjacent two layers arc bubble-cap 506 of at least two-layer arc bubble-cap 506, stagger respectively about 45 °, 30 ° or 22.5 °.Certainly, the arc bubble-cap of every one deck also can evenly be set to the arc bubble-cap of other numbers as required, between adjacent two-layer arc bubble-cap, also distinguishes interleaved setting.
One more preferably in embodiment, wherein each correspondence of multiple cloth liquid mouths 306 be arranged at least two-layer arc bubble-cap 506 of circle type combination bubble cap plate 50 outermost layer arc bubble-cap each section roughly centre position directly over.Washings can flow along arc bubble-cap both sides towards the interval between two sections of arc bubble-caps after falling the outer of arc bubble-cap like this, the centre position of washings one deck arc bubble-cap under the interval by between two sections of arc bubble-caps flows to afterwards, thereby the flow process that extends washings.
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 scrubber 1 and secondary scrubber 2, wherein in elementary scrubber 1, be provided with the lower end of helical tray main body 102 described above by the circle type helical tray of the lower end closed of spray column 206 10 and at least one deck spray thrower 13 that is positioned at circle type helical tray below, wherein at least one deck spray thrower 13 is symmetrically arranged with multiple spray throwers, and in secondary scrubber 2, be provided with gas distributor of the present invention 60 described above and spray column 206 and extend beyond the lower end of helical tray main body 102 downwards, and downwards, extend beyond the circle type helical tray 10 that is all evenly provided with multiple spray holes 208 on the spray column side of helical tray main body 102 lower ends and bottom surface, lower end.
In a preferred embodiment, the below layering of the elementary scrubbing tower 1 inner helical tray main body 102 arranging arranges two-layer buck atomized liquid spray thrower 13, every layer can be distributed with four, six, eight spray throwers symmetrically, make buck atomized drop from each spray thrower ejection, coal gas is carried out to humidification dedusting.
In another embodiment of the present invention, a kind of device 1000 for gas purification is provided, it is characterized in that, comprise: elementary scrubber 1 and secondary scrubber 2, wherein in elementary scrubber 1, be provided with the lower end of helical tray main body 102 described above by the circle type helical tray of the lower end closed of spray column 206 10 and at least one deck spray thrower that is positioned at circle type helical tray below, wherein at least one deck spray thrower 13 is symmetrically arranged with multiple spray throwers, and in secondary scrubber 2, be provided with gas distributor of the present invention 60 described above and spray column 206 and extend beyond the lower end of helical tray main body 102 downwards, and downwards, extend beyond the circle type helical tray 10 that is all evenly provided with multiple spray holes 208 on the spray column side of helical tray main body 102 lower ends and bottom surface, lower end.
In a preferred embodiment, the below layering of the elementary scrubbing tower 1 inner helical tray main body 102 arranging 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, make buck atomized drop from each spray thrower ejection, coal gas is carried out to humidification dedusting.
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 down-comer 16 of elementary scrubber 1, and the entrance of secondary cyclone 9 is connected with the gas exit 110 of elementary scrubber 1, the gas exit 904 of secondary cyclone 9 is connected to the entrance of the first dedusting gas entry pipe 26 of secondary scrubber 2.
One, more preferably in embodiment, secondary scrubbing tower 2 is provided with the solid valve tower tray 225 of multilayer above spray column inlet duct 202, above the solid valve tower tray 225 of multilayer, is provided with Combined defoamer 290.
One, more preferably in embodiment, Combined defoamer 290 consists of concave flow-guiding type screen foam remover 292 and plate-fin entrainment separator 294.
Referring to accompanying drawing to of the present invention for the circle type helical tray of scrubber be specifically described for the device of gas purification.
As shown in Figure 2, gas distributor 60 of the present invention, it is arranged at the bottom of the secondary scrubbing tower of coal gas (being smart scrubbing tower) 2.Gas distributor 60 of the present invention, comprising: gas buffer chamber 240, first dedusting gas entry pipe 26, distribution of gas member 620, and gas distributor support member 680.
Just dedusting gas entry pipe 26, runs through the sidewall 22 of secondary scrubbing tower 2 and is down horizontal " L " type, and its gas entry 262 is arranged on outside the sidewall 22 of secondary scrubbing 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, distribution of gas member 620, comprises three annular gas distributed pipelines 622,623,624 that roughly arrange with one heart; The first connecting bridge 640 and the second connecting bridge 660; And wireway 284.Certainly, annular gas distributed pipeline 622,623,624 can be also the annular gas distributed pipeline of other shapes of roughly arranging with one heart, as square, oval etc.Three annular gas distributed pipelines 622,623,624th, vertical cross-section is the pipeline of circle, its diameter is 30～300mm.Its diameter can arrange as required, can be identical, and also can be different.
Certainly, distribution of gas member 620 also can be according to the size of scrubbing tower and coal gas treating capacity by two or more, as three, four, five annular gas distributed pipeline 622,623,624 formations such as grade that roughly arrange with one heart.
The first connecting bridge 640 and the second connecting bridge 660, its inside is cavity, with 622,623,624 gases are communicated with, and are arranged on three annular gas distributed pipelines 622 in distribution of gas member 620, between 623,624, gas between three annular gas distributed pipelines is communicated with.
Referring to Fig. 2, two wireways 284, are arranged in water-bath 280 and symmetry is connected to the first connecting bridge 640, are communicated with the gas in the first connecting bridge 640 cavitys, make to be communicated with distribution of gas member 620 gases.
Three annular gas distributed pipelines 622,623,624 in distribution of gas member 620 and the first connecting bridge 640 and the second connecting bridge 660 are provided with multiple straight holes 628,642,662 in the direction of water-bath 280 bottoms at it.
Three annular gas distributed pipelines 622 in distribution of gas member 620,623,624 are also provided with multiple tangential holes 626 with multiple straight hole 628 interleaved at it in the direction of water-bath 280 bottoms, and the opening of multiple tangential holes 626 is set to tilt laterally down.
Gas distributor support member 680, is symmetricly set on the bearing of trend of distribution of gas member 620, and distribution of gas member 620 symmetries are connected on the inwall of coal gas essence scrubbing tower 2 sidewalls 22.
The bottom of water-bath 280 is set to taper, and the Heisui River discharge pipe 242 arranging on it is positioned at the central part of water-bath 280 bottoms.The diameter of the multiple straight holes 628 that arrange on three annular gas distributed pipelines 622,623,624 is 5-80mm, and the length of side of multiple tangential holes 626 is 5-80mm.More preferably, the diameter of the multiple straight holes 628 that arrange at least two annular gas distributed pipelines is 5-50mm, and the length of side of multiple tangential holes 626 is 5-50mm.Further preferably, the diameter of the multiple straight holes 628 that arrange at least two annular gas distributed pipelines is 10-30mm, and the length of side of multiple tangential holes 626 is 10-30mm.The length of side of multiple straight holes and multiple 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 can be also that horizontal cross-section is that annular, vertical cross-section are the forms of rectangle or foursquare hollow circuit cylinder, in it, the difference of outer radius is 30～300mm, and height is 100～1000mm, and its concrete size can be that coal gas amount is determined according to actual conditions and load.Wherein the difference of the interior outer radius of three annular gas distributed pipelines 622,623,624 and height can be identical, also can be different.
Referring again to Fig. 2, the coal gas after elementary washing enters in the gas buffer chamber 240 of bottom setting of the secondary scrubbing tower (being smart scrubbing tower) 2 that comprises gas distributor of the present invention by first dedusting gas entry pipe 26.
As shown in Fig. 1 a, Fig. 1 b, Fig. 2 and Fig. 3, coal gas is left by the gas exit 264 of the first dedusting gas entry pipe 26 of smart scrubbing tower and is entered the gas buffer chamber 240 that smart scrubbing tower 2 bottoms arrange by the top exit 904 of secondary cyclone 9, then coal gas rises, via wireway 284, enter gas distribution member 620, carry out the preliminary distribution of gas.
Then, coal gas is at the annular gas distributed pipeline 622 roughly arranging with one heart passing through in distribution of gas member 620,623, the multiple downward opening straight hole 628 evenly arranging on 624 and spraying with the outside tangential slot 626 down that is tilted to that multiple opening straight holes 628 are arranged alternately, simultaneously also from the first connecting bridge 640 and the second connecting bridge 660, at it, the direction towards water-bath 280 bottoms is provided with multiple straight holes 642,662 ejections, enter the water-bath chamber 280 of smart scrubbing tower 2, then upwards enter again the top of secondary scrubbing tower 2.
In order to prevent resulting in blockage after parking, straight hole 628 and tangential slot 626 openings are all set to perforate down.
Because straight hole 628, 642, 662 coal gas that gush out just rise by annular gas distributor gear 620, at two adjacent annular gas distributed pipelines 622, 623, between 624 or the coal gas that rises from the place away from straight hole of smart scrubbing tower 2 inwalls 22 few, and coal gas is tilted to the backward outside of tangential slot 626 down, outside towards two adjacent annular gas distributed pipelines 622 by opening, 623, between 624 or inwall 22 places of smart scrubbing tower 2 spray, reach and make the equally distributed object of coal gas, the washings of coal gas and the interior water-bath 280 of scrubbing tower 2 produce larger contact area like this, thereby obtain better dust removing effects, be that these intensive uniform straight holes and tangential slot make large strand agglomerating coal gas originally in water-bath, be divided into a lot of thin strand of uniform coal gas, increased dedusting area, improved the efficiency of water bath dust-removing.
Also because being tilted to outside tangential slot 626 rear-inclineds down by opening, coal gas sprays laterally, the high pressure gas producing for pressurized-gasification furnace, the washings that will promote the interior water-bath 280 of scrubbing tower 2 motion of spinning, and the washings of water-bath promote coal gas eddy flow conversely in scrubbing tower in motion, promote that coal gas is more uniformly distributed, and due to the lengthening in coal gas path, make more water mass transfer with it, thereby obtain better water bath dust-removing effect.
As shown in Figure 2, from bottom to top, coal gas leaves after gas distributor 60, rise and pass liquid level 250, roundabout through two-layer tower tray 265 and from the 270 counter current contacting dedustings of high pressure buck after the purification of black water treatment system again, then through the spraying area 276 of a steam condensate atomized liquid or desalted water atomized liquid, then enter circle type combination bubble cap plate 50.
As 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, and part washings are from narrow air rising hole 508 toward decline, both close contacts, adverse current dedusting.
Then the space of coal gas through liquid phase distributor 30 and the tower wall 22 of secondary scrubbing tower 2.As 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 desalted water atomized liquid spray from spray column 206, steam condensate or desalted water flow down in opposite directions along helical tray main body 102 and coal gas simultaneously, thereby remove mist and the grit group of in coal gas, carrying secretly.
Refer again to accompanying drawing 2, Fig. 4 c, Fig. 5 and Fig. 6 a-6b, the washings of being discharged by four tubaeform cloth liquid mouths 306 by intake chute 302 drop to the periphery on circle type combination bubble cap plate 50, arc bubble-cap 506 is outer shellring shape, between every adjacent two layers arc bubble-cap, leaves space and staggers 45 °; In same layer, between two adjacent arc bubble-caps, also there is interval.Washings roundabout flowing between arc bubble-cap, makes its flow process elongated like this, and the time of staying and the soak time of washings on this tower tray lengthened, thereby makes can absorb more impurity in coal gas with the liquid of small amount.
In order to make washings 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 washings flow down from falling liquid passage 502, run into steam condensate atomized liquid or the desalted water atomized liquid of ejection, washings are dispelled to be fallen, there are part washings to be fallen by the air rising hole 508 in bubble-cap simultaneously, coal gas is upwards overflowed by the multiple steam vents 510 that evenly arrange on arc bubble-cap 504, steam condensate atomized liquid or desalted water atomized liquid wash coal gas with the cleaning solution being scattered simultaneously like this, the grit of cohesion is fallen very soon, reduce the dust content of gas that enters upper strata tower tray, and now dust content of gas is very low, therefore do not have the situation generation that gas dust stops up bubble-cap.
Coal gas continue again rise through four layers of tower tray 225 and with steam condensate or desalted water counter current contacting, thereby further remove the mist of carrying secretly in coal gas.Then, the Combined defoamer 290 of coal gas through being formed 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, dustless coal gas is system after gas exit 210 discharges of secondary scrubbing tower enter.
Through above a series of washing, remove original dustiness with regard to the trickle grit in very low coal gas, make the dustiness of coal gas be reduced to low-down level, Combined defoamer 290 stopping states will reduce greatly.
Different from Chinese patent 200810018399.0, the cleaning solution of the upper strata tower tray 225 in the inventive method, all with steam condensate or desalted water, overlaps 6.5MPa, produces effective gas (CO+H for list
2) be 106,000NM
3its consumption of the gasification 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 consisting of concave flow-guiding type screen foam remover 292 and plate-fin entrainment separator 294, further removes mist, can obtain the low-down dustless coal gas of dustiness.
As shown in Figures 2 and 3, the top of smart scrubbing tower 2 is gas exit 210, and dustless clean gas is gone to rear system (as systems such as methyl alcohol conversion, low-temperature rectisols) thus, essence scrubbing tower 2 is from up to down provided with plate-fin entrainment separator 292 and concave flow-guiding type screen foam remover 294, is next respectively arranged with tower side steam condensate or desalted water entrance 232, the solid valve tower tray 225 of some layers (coal gas sails against the current, removes with steam condensate or desalted water the mist of carrying secretly in coal gas through for example four layers of tower tray 225), spray column 206, steam condensate or desalted water first with from the dustless clean gas of compression of rear system, enter 80 atomizations of mixed aerosol device and become steam condensate atomized liquid or desalted water atomized liquid droplet, then enter spray column 206 and in the space of narrow tower tray 10, spray high density water smoke, now coal gas continues on helical tray main body 102 screws, the high density water smoke of ejection and coal gas are near normal motion, once steam condensate atomized liquid or desalted water atomized liquid droplet are sprayed onto trickle grit few in number like this, just can be at once and steam condensate atomized liquid or desalted water atomized liquid droplet or the cohesion of trickle grit of follow-up ejection, fall, subsequently by along helical tray spiral and under steam condensate or desalted water sweep away, reach the effect of smart dedusting.
The entrance of the grey water-circulating pump 230 of scrubbing tower 2 is arranged on water-bath 280 tops simultaneously again lower than liquid level 250, make fully to obtain and recycle in the buck few and cleaner compared with the solid particle 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 scrubbing tower 1 is as shower water, go to primary cyclone 7 as dedusting washings, go to mixed aerosol device 80 as atomization water, go to coal gasifier as chilled water and go to secondary cyclone 9 as dedusting washings.
Referring to Fig. 3, device 1000 for gas purification of the present invention, comprise, elementary scrubber (coal gas is slightly washed tower) 1 and secondary scrubber (coal gas essence scrubbing tower) 2, is wherein provided with gas distributor described above 60 in cleaned coal gas wash tower 2.
With reference to Fig. 3, first raw gas enters primary cyclone 7 through multiple raw gas imports 702, through cyclonic separation, the gas exit 704 arranging from its top is discharged, by the down-comer 16 of elementary scrubbing tower 1, enter elementary scrubbing tower 1 again, coal gas upwards spirals upwards via the helical tray main body 102 of the elementary scrubbing tower 1 inner circle type helical tray 10 going out as shown in Figure 4 b arranging, and the gas exit 110 arranging from elementary scrubbing tower 1 top is discharged.Wherein, the lower end of the elementary scrubbing tower 1 inner helical tray main body 102 arranging is by the lower end closed of spray column 206.
As shown in Figure 3, the below layering of the elementary scrubbing tower 1 inner helical tray main body 102 arranging arranges two-layer buck atomized liquid spray thrower 13, and every layer is distributed with four spray throwers symmetrically, and buck atomized drop sprays from spray thrower, and coal gas is carried out to humidification dedusting.
The gas inlet 902 that the coal gas that the gas exit 110 arranging from elementary scrubbing tower 1 top is discharged then enters secondary cyclone 9, coal gas is after the cyclone dust removal foam removal of secondary cyclone 9, and the coal gas gas exit 904 that portion arranges is from it discharged.
Referring again to Fig. 2 and 3, coal gas enters the entrance of the first dedusting gas entry pipe 26 of smart scrubbing tower (secondary scrubbing tower) 2 bottoms settings, then upwards pass through gas distributor 60 described above, then coal gas continues upwards after water-bath 280, to pass combination bubble cap plate 50 and the helical tray 30 of circle type helical tray 10 as shown in Fig. 4 c again, via the helical tray main body 102 of the secondary scrubbing tower 2 inner circle type helical trays 10 that arrange, spiral and upwards contact washing with the water smoke being sprayed by spray column 206 with the water flowing down from helical tray main body 102 again, coal gas through washing is more upwards via four layers of solid valve tower tray 225 and Combined defoamer 290, the purification gas exit 210 finally arranging from secondary scrubbing tower 2 tops is discharged, send into rear system.
Comprise the secondary scrubbing tower of gas distributor coal gas of the present invention and abandoned and caused easy obstruction, easy to wear, easy fouling and the large Venturi scrubber of pressure drop for the device of gas purification, designed a kind of new technology that comprises atomising device, cyclone separator, even gas distribution device and the new equipments such as spiral tower tray of spraying, object be to provide a kind of using water wisely, equipment manufacturing cost low, remove NH
3, HCN, HCl, HCOOH and grey slag dust efficiency high, overcome that the existing pressure drop of prior art is large, energy consumption is high, the problem such as low and work period of easy obstruction, trickle grit removal efficiency is short.Because ultrasonic spraying device only needs a small amount of water, can spray a large amount of night fogs for washing, greatly saved water, and water gaging all carry out interior circulation 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 of the pressurized gasification production take coal, petroleum coke, living beings and/or flammable trade waste as raw material.
In another specific embodiment, the invention provides the secondary scrubbing tower of the coal gas for gas purification that comprises gas distributor of the present invention in the application of the purification of the coal gas of the pressurized gasification production take coal, petroleum coke, living beings and/or flammable trade waste as raw material.
In an embodiment again, the invention provides the application in the purification of the coal gas that a kind of gas cleaning device that comprises gas distributor of the present invention produces at the pressurized gasification take coal, petroleum coke, living beings and/or flammable trade waste as raw material.
Although various embodiment of the present invention is described in context by the specific 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 not deviating 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 (14)
1. the gas distributor (60) for the secondary scrubbing tower of coal gas (2), is characterized in that, comprising:
1) gas buffer chamber (240), be arranged on the bottom section of described secondary scrubbing tower (2), its Heisui River discharge pipe (242) arranging by the bottom (282) of the water-bath (280) being connected with the sidewall (22) of described secondary scrubbing tower (2) with on it forms with bottom sidewall (22) and the lower wall (22 ') of described secondary scrubbing tower (2);
2) first dedusting gas entry pipe (26), run through the sidewall (22) of described secondary scrubbing tower (2) and be down horizontal " L " type, its gas entry (262) is arranged on outside the sidewall (22) of described secondary scrubbing tower (2), and its gas exit (264) is arranged on inside, described gas buffer chamber (240) and Open Side Down;
3) distribution of gas 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 connecting bridge (640) and the second connecting bridge (660), be arranged at least two described annular gas distributed pipelines (622 in described distribution of gas member (620), 623,624) between, described at least the first connecting bridge (640) and the second connecting bridge (660) inside are hollow, and gas between at least two described annular gas distributed pipelines is communicated with; And
Iii) at least one wireway (284), it is arranged in described water-bath (280) and is communicated with the gas in described the first connecting bridge (640) cavity, makes to be communicated with described distribution of gas member (620) gas;
Wherein, at least two described annular gas distributed pipelines (622 in described distribution of gas member (620), 623, 624) at it, in the direction of described water-bath (280) bottom, be provided with multiple straight holes (628 with described at least the first connecting bridge (640) and the second connecting bridge (660), 642, 662), and at least two described annular gas distributed pipelines (622 in described distribution of gas member (620), 623, 624) at it, in the direction of water-bath (280) bottom, be provided with multiple tangential holes (626) with described multiple straight holes (628) interleaved, the opening of described multiple tangential hole (626) is set to tilt laterally down.
2. gas distributor according to claim 1 (60), further comprises:
4) gas distributor support member (680), it is upper that it is arranged on described distribution of gas member (620), and described distribution of gas member (620) is connected on the inwall of sidewall (22) of described coal gas essence scrubbing tower (2).
3. gas distributor according to claim 1 and 2 (60), wherein said distribution of gas member (620) is by three annular gas distributed pipelines (622 that roughly arrange with one heart, 623,624) form, described at least one wireway (284) is set to 2 wireways (284) and is symmetricly set on the pipeline of described water-bath (280) and described the first connecting bridge (640), and described annular gas distributed pipeline (622,623,624) is 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 discharge pipe (242) arranging on it is positioned at the central part of described water-bath (280) bottom.
5. gas distributor according to claim 1 and 2 (60), wherein at least two described annular gas distributed pipelines (622,623,624) diameter of the upper described multiple straight holes (628) that arrange is 5-80mm, and the length of side of described multiple tangential holes (626) is 5-80mm.
6. gas distributor according to claim 1 and 2 (60), wherein at least two described annular gas distributed pipelines (622,623,624) 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.
7. gas distributor according to claim 1 and 2 (60), wherein at least two described annular gas distributed pipelines (622,623,624) be that vertical cross-section is the pipeline of circle, described annular gas distributed pipeline diameter is 30～300mm, wherein each diameter difference at least two described annular gas distributed pipelines (622,623,624).
8. gas distributor according to claim 1 and 2 (60), wherein at least two described annular gas distributed pipelines (622,623,624) be a hollow cylindrical structure, its horizontal cross-section is that annular, vertical cross-section are rectangle or foursquare pipeline, and in it, the difference of outer radius is 30～300mm, height is 100～1000mm, wherein in each at least two described annular gas distributed pipelines (622,623,624), the difference of outer radius is identical.
9. gas distributor according to claim 1 and 2 (60), wherein at least two described annular gas distributed pipelines (622,623,624) be a hollow cylindrical structure, its horizontal cross-section is that annular, vertical cross-section are rectangle or foursquare pipeline, and in it, the difference of outer radius is 30～300mm, height is 100～1000mm, the wherein difference difference of outer radius in each at least two described annular gas distributed pipelines (622,623,624).
10. gas distributor according to claim 2 (60), wherein said gas distributor support member (680) is symmetricly set on the outer wall of described distribution of gas member (620) on described the first connecting bridge (640) bearing of trend.
11. 1 kinds of secondary scrubbers (2) for gas purification, is characterized in that, are provided with the gas distributor (60) described in claim 1-10 any one in described secondary scrubber (2).
12. secondary scrubbers according to claim 11 (2), wherein in inner liquid level (250) top of described secondary scrubber (2), be also provided with circle type helical tray (10), its top is also provided with the solid valve tower tray (225) of multilayer, in the top of the solid valve tower tray (225) of described multilayer, is also provided with Combined defoamer (290).
13. 1 kinds of devices for gas purification (1000), it is characterized in that, comprise that elementary scrubber (1) and secondary scrubber (2) are provided with the gas distributor (60) described in claim 1-10 any one in wherein said secondary scrubber (2).
The application of the purification of 14. coal gas of producing at the pressurized gasification take coal, petroleum coke, living beings and/or flammable trade waste as raw material according to the gas distributor (60) described in claim 1-10 any one or according to the secondary scrubber (2) for gas purification described in claim 11 or 12 or the device for gas purification according to claim 13 (1000).
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| CN201110324714.4A CN103060018B (en) | 2011-10-21 | 2011-10-21 | Gas distributor for coal gas high-efficiency washing and cleaning technique, secondary coal gas washing tower, coal gas cleaning device and application thereof |
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| CN104761041B (en) * | 2014-01-08 | 2017-02-22 | 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 |
| CN104531231B (en) * | 2014-12-25 | 2017-01-25 | 清华大学 | High-efficiency composite carbon black washing tower for high-ash-content coal gasification |
| 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 |
| 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 |
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| CN202322761U (en) * | 2011-10-21 | 2012-07-11 | 神华集团有限责任公司 | Gas distributor, secondary coal gas scrubber and coal gas purifying device for efficient washing and purifying process of coal gas |
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