CN202322761U - Gas distributor, secondary coal gas scrubber and coal gas purifying device for efficient washing and purifying process of coal gas - Google Patents
Gas distributor, secondary coal gas scrubber and coal gas purifying device for efficient washing and purifying process of coal gas Download PDFInfo
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- CN202322761U CN202322761U CN2011204055289U CN201120405528U CN202322761U CN 202322761 U CN202322761 U CN 202322761U CN 2011204055289 U CN2011204055289 U CN 2011204055289U CN 201120405528 U CN201120405528 U CN 201120405528U CN 202322761 U CN202322761 U CN 202322761U
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Abstract
The utility model provides a gas distributor, a secondary coal gas scrubber and a coal gas purifying device for an efficient washing and purifying process of coal gas. The gas distributor (60) disclosed by the utility model comprises a gas buffering chamber (240), a primary dedusting coal gas inlet pipe (26) and a gas distribution component (620), wherein the gas buffering chamber (240) is arranged at the bottom region of a secondary washing tower (2); the primary dedusting coal gas inlet pipe (26) penetrates through a lateral wall (22) of the secondary washing tower (2) and is inversely and horizontally L-shaped; 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 guide pipe (284), wherein 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, 624 and 662), and the annular gas distribution pipelines (622, 623 and 624) and the plurality of straight holes (628) are provided with a plurality of tangential holes (626) at intervals in a staggered manner.
Description
Technical field
The utility model relates in general to and belongs to the Coal Gasification Technology field; Being specifically related to a kind of the be used for gas distributor of coal gas high-efficient washing purification process, the gas cleaning device that comprises it and application thereof, especially is purification process and the device and the application thereof of the coal gas produced of the pressurized gasification of raw material with coal, refinery coke, biomass, flammable trade waste.
Background technology
With coal, refinery coke, biomass, flammable trade waste is 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, 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., for civilian 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 being provided, advancing DCL/Direct coal liquefaction and indirect liquefaction industry, development integrated gasification combined cycle plants (IGCC) to generate electricity, the purification in early stage of coal gas removes NH wherein
3, HCN, HCl, HCOOH and lime-ash will seem even more important.
A kind of gas cleaning system of " orifice or Venturi scrubber, a kind of gas-liquid washing column of followed " by Texaco Development Corporation's invention has been proposed in No. the 94117093.4th, the one Chinese patent application.Practice shows that orifice or Venturi scrubber take place to stop up or fouling easily; Even without stopping up, the pressure that coal gas process orifice or Venturi scrubber also can produce about 0.3MPa falls, and has caused power loss, has increased process cost; Water phenomenon usually takes place in the gas-liquid washing column in this patented claim, influences the normal operation of lower procedure such as conversion.
Propose in No. the 01112700.7th, the one Chinese patent application; Coal gas mixes with water in diluter earlier, then gets in the cyclonic separator major part is contained the lime-ash water sepn, gets into washing tower then and (is conventional knockout tower; Comprise packing tower or tray column, preferred bubble-plate column in the tray column) washing.In this technology, 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 on filler or bubble-cap, to stick deposition 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; Influence washing effect, increased the weight of obstruction conversely again, 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, one 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, get into separator then; Raw gas gets into downtake via the separator gas inlet in separator, and enterings liquid phases such as the most of lime-ash in the raw gas flow downward, and raw gas upwards flows, and passes through the dedusting that further dewaters of eddy flow plate 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 through washing tower gets into the washing tower bottom make progress mobile; Be provided with on washing tower top in the some grades of tower trays with the internal recycle import is sent into from washing tower Heisui River from a part of Heisui River of washing water recycle pump and the technology moisturizing that adds through the make up water inlet; Counter current contact is washed; Upwards remove the mist in the coal gas then through the traverse baffle scum dredger on washing tower top; Coal gas through behind the washing tower secondary washing, purifying is sent into the subsequent conversion operation through the washing tower gas exit of washing tower, and the Heisui River that washing tower produces enters the usage on black water system through the outlet of washing tower Heisui River.In this technology; Venturi scrubber can have good washing effect at the initial stage of production run; But after after a while, Venturi scrubber often takes place to stop up or structure, and its shower nozzle is serious wear gradually also; Thereby influence the washing effect of its atomizing effect and washing effect and back washing tower widely, and Venturi scrubber often causes the big energy consumption of pressure drop high; In addition; On washing tower top some grades of tower trays are set, wash by counter current contact with Heisui River at the bottom of the washing Tata (through the transmission of washing water recycle pump) for one-level washing, purifying coal gas, 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 technology, can't reach the scrubbing dust collection effect that needs along with the increase of production run time.
The utility model has been abandoned to cause and has been prone to obstruction, easy to wear, easy fouling and the big Venturi scrubber of pressure drop; Designed a kind of novel process that comprises 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, the gas purification equipment of problems such as overcoming that the existing in prior technology pressure drop is big, energy consumption is high, be prone to stop up, trickle grit decreasing ratio is low and the work period is short.
The utility model content
In order to solve the problem that prior art exists; The purpose of the utility model provides a kind of gas distributor that is used for the secondary washing tower of coal gas (smart washing tower); With overcome the existing easy obstruction of Venturi scrubber that present technology adopted, easy to wear, be prone to fouling and the big problem of pressure drop, thereby realize that equipment manufacturing cost is low, remove NH
3, HCN, HCl, HCOOH and grey slag dust efficient is high, defectives such as overcoming that the existing in prior technology pressure drop is big, energy consumption is high, be prone to stop up, trickle grit decreasing ratio is low and the work period is short.
Therefore, in one aspect, the utility model provides a kind of gas distributor that is used for the secondary washing tower of coal gas (being the smart washing tower of coal gas) of coal gas high-efficient washing purification process.
The gas distributor of the secondary washing tower of coal gas that is used for coal gas high-efficient washing purification process of the utility model is characterized in that, comprising:
1) gas buffer chamber is arranged on the bottom section of secondary washing tower, and its bottom by the water-bath that links to each other with the sidewall of secondary washing tower goes up the Heisui River vent pipe of setting with it and the side walls and the lower wall of secondary washing tower constitutes;
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 are provided with one heart;
Ii) at least the first cross structure and second cross structure; Be arranged between at least two annular gas distributed pipelines in the gas distribution member; At least the first cross structure and second cross structure inside are hollow, gas communication between feasible at least two annular gas distributed pipelines; And
Iii) at least one gas tube, it is arranged in the water-bath and with the pipeline gas of first cross structure and is communicated with, makes and 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 its direction towards the water-bath bottom of second cross structure; 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 outward inclining down.
The gas distributor of the utility model; Wherein first cross structure and the second cross structure inside are hollow; Make and at least two annular gas distributed pipelines between gas communication; From the water-gas of a plurality of straight holes ejections of being provided with at its gas distribution member and at least the first cross structure and second cross structure near rising annular gas distributed pipeline and first cross structure and second cross structure; And the gas that gushes out from a plurality of tangential holes that the gas distribution member is provided with is because the structure of tangential hole outward inclining; The feasible gas that sprays from tangential hole like this, makes that the acquisition while of distribution uniformly reduces the possibility that accumulates air pocket again to water-gas to a certain extent as far as possible in whole water-bath to the direction ejection away from the annular gas distributed pipeline.
Preferably, the gas distributor of the utility model further comprises:
4) gas distributor strut member, it is arranged on the gas distribution member, makes the gas distribution member be connected in the coal gas fine purifiation and washs on the inwall of tower side wall.
Preferably; Wherein the gas distribution member is made up of three annular gas distributed pipelines that roughly are provided with one heart; At least one gas tube be set to 2 gas tubes and be symmetricly set on water-bath and the pipeline of first cross structure on, and the said 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 is provided with on it is positioned at the central part of water-bath bottom.
Preferably, the diameter of a plurality of straight holes that wherein are provided with 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 are provided with 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 are provided with 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 confirmed 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 being symmetricly set on the outer wall of gas distribution member on the bearing of trend of first cross structure.
In yet another aspect, the utility model provides a kind of secondary washing tower of coal gas that is used for gas purification, it is characterized in that, is provided with the gas distributor of the utility model described above in the secondary gas wash tower.
Preferably; The secondary washing tower of the coal gas of the utility model; Wherein above the inner liquid level of the secondary washing tower of coal gas, also be provided with circumference formula spiral tower tray, its top also is provided with the solid valve tower tray of multilayer, above the solid valve tower tray of multilayer, also is provided with the built-up type scum dredger.
Preferably, the circumference formula spiral tower tray that is used for gas wash tower of the utility model 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 inlet that extends the gas washing Tata wall outside;
Spray column, it is connected with the approximate center perpendicular of spray column inlet duct at gas wash tower, and around spray column, is evenly distributed with a plurality of spray holes; And
Spiral tower tray main body, the inboard of spiral tower 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 02～10mm.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 spiral tower tray main body downwards, and extends beyond downwards at spray column on sidewall and the bottom surface, lower end of spiral tower tray main body lower end and be provided with a plurality of spray holes.
More preferably, the circumference formula spiral tower tray of the utility model further comprises:
Liquid phase distributor, around the spray column setting, the inwall of said liquid phase distributor and gas wash tower is provided with certain intervals below spiral tower tray main body; And
Circumference formula 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 said circumference formula combination bubble cap plate downwards; And the spray column between liquid phase distributor and said circumference formula combination bubble cap plate is not provided with spray holes, and spray column extends through one section spray column of circumference formula 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 each ends away from annular liquid phase distribution plate of a plurality of intake chutes respectively, 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 four, six or eight respectively, and a plurality of cloth liquid mouths are set to tubaeform.
Preferably, wherein circumference formula 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, each layer 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 each layer of two-layer at least arc bubble-cap is four, six or eight, correspondingly, staggers about 45 °, 30 ° or 22.5 ° respectively between the adjacent two layers arc bubble-cap of two-layer at least arc bubble-cap.Certainly, the arc bubble-cap of each layer 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, each correspondence of wherein a plurality of cloth liquid mouths be arranged on circumference formula 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 utility model provides a kind of device that is used for gas purification; It is characterized in that; Comprise: elementary gas wash tower and secondary gas wash tower; The lower end of spiral tower tray main body that is provided with above description in the wherein elementary gas wash tower is with the circumference formula spiral tower tray of the lower end closed of spray column and the spray thrower of one deck at least that is positioned at circumference formula spiral tower tray below; Wherein one deck spray thrower is symmetrically arranged with a plurality of spray throwers at least, and is provided with gas distributor and the lower end that spray column extends beyond spiral tower tray main body downwards of the utility model of above description in the secondary gas wash tower, and at the circumference formula spiral tower tray of the lower end closed of spray column.
Preferably; The below layering of the spiral tower tray main body of elementary washing tower set inside is provided with two-layer buck atomized liquid spray thrower; Every layer can be distributed with four, six, eight spray throwers symmetrically, makes the buck atomizing droplet from each spray thrower ejection, and coal gas is carried out the humidification dedusting.
Preferably, the device that is used for gas purification of the utility model 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 inlet of the downtake of elementary gas wash tower; And the inlet 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 inlet 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, above the solid valve tower tray of said multilayer, be provided with the built-up type scum dredger.
More preferably, the built-up type scum dredger is made up of concave flow-guiding type wire mesh demister and plate-fin entrainment separator.
Description of drawings
Fig. 1 a shows according to the gas distribution member of the gas distributor of a kind of embodiment of the utility model 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 synoptic diagram that comprises according to the secondary gas wash tower of the gas distributor of a kind of embodiment of the utility model;
Fig. 3 shows the vertical profile synoptic diagram that comprises according to the gas cleaning device of the gas distributor of a kind of embodiment of the utility model;
Fig. 4 a shows the vertical profile synoptic diagram according to the spiral tower tray of the secondary gas wash tower of a kind of embodiment of the utility model;
Fig. 4 b shows the vertical profile synoptic diagram according to the spiral tower tray of the elementary gas wash tower of the another kind of embodiment of the utility model;
Fig. 4 c shows the vertical profile synoptic diagram according to the spiral tower tray that comprises liquid phase distributor and circumference formula combination bubble cap plate of the secondary gas wash tower of the embodiment of the utility model of Fig. 4 a;
Fig. 5 shows the synoptic diagram according to the liquid phase distributor of the secondary gas wash tower of a kind of embodiment of the utility model, 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 synoptic diagram of liquid phase distributor;
The circumference formula that Fig. 6 a shows according to the secondary gas wash tower of a kind of embodiment of the utility model makes up the vertical view of bubble cap plate along the F-F line; And
Fig. 6 b shows the front view according to the arc bubble-cap of the circumference formula combination bubble cap plate of the secondary gas wash tower of a kind of embodiment of the utility model.
Embodiment
The embodiment of the utility model below is provided.Those skilled in the art should understand that wherein embodiment only is for illustrative purposes, should not be regarded as the scope that limits the utility model that limits claim by any way.
Therefore, the utility model provides a kind of gas distributor that is used for the secondary washing tower of coal gas that is used for coal gas high-efficient washing purification process.
In an embodiment, the utility model provides a kind of gas distributor 60 that is used for the secondary washing tower 2 of coal gas that is used 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 up of with lower wall 22 ' the bottom 282 of the water-bath 280 that links to each other with the sidewall 22 of secondary washing tower 2 and the side walls 22 of Heisui River vent pipe 242 that is provided with 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 are provided with one heart;
Ii) at least the first cross structure 640 and second cross structure 660; Be arranged at least two annular gas distributed pipelines 622 in the gas distribution member 620; 623; Between 624, at least the first cross structure 640 and second cross structure, 660 inside are hollow, make gas communication between at least two annular gas distributed pipelines; And
Iii) at least one gas tube 284, its be arranged in the water-bath 280 and with first cross structure, 640 cavitys in gas communication, make and gas distribution member 620 gas communications;
Wherein, At least two annular gas distributed pipelines 622,623,624 in the gas distribution member 620 are provided with a plurality of straight holes 628 with at least the first cross structure 640 and second cross structure, 660 its directions towards water-bath 280 bottoms; 642; 662, and at least two annular gas distributed pipelines 622,623 in the gas distribution member 620; 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 outward inclining down.
The gas distributor 60 of the utility model, wherein first cross structure 640 and second cross structure, 660 inside are hollow, make and at least two annular gas distributed pipelines 622; 623; Gas communication between 624, from the water-gas of a plurality of straight holes ejections of being provided with at its gas distribution member 620 and at least the first cross structure 640 and second cross structure 660 from annular gas distributed pipeline 622,623; Near the rising of 624 and first cross structure 640 and second cross structure 660; And the gas that a plurality of tangential holes that are provided with from gas distribution member 620 come out is because the structure of tangential hole outward inclining, makes from the gas of tangential hole ejection to away from annular gas distributed pipeline 622,623; 624 direction ejection; Like this, make that water-gas obtains to distribute uniformly as far as possible in whole water-bath 280, reduce the possibility that accumulates air pocket again simultaneously to a certain extent.
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, make gas distribution member 620 be connected on the inwall of smart washing tower 2 sidewalls 22 of coal gas.
In a preferred embodiment, wherein gas distribution member 620 is made up of three annular gas distributed pipelines that roughly are provided with one heart, at least one gas tube 284 be set to 2 gas tubes 284 and be symmetricly set on water-bath 280 and the pipeline of 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 is provided with 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 are provided with 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 are provided with 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 are provided with 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, and height is 100～1000mm, and concrete size can be that the coal gas amount is confirmed 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 being symmetricly set on the outer wall of gas distribution member 620 on the bearing of trend of first cross structure 640.
In another embodiment, the utility model provides a kind of secondary washing tower 2 of coal gas that is used for gas purification, it is characterized in that, is provided with the gas distributor 60 of the utility model described above in the said secondary gas wash tower 2.
In a preferred embodiment; The secondary washing tower 2 of the coal gas of the utility model; Wherein above the liquid level 250 of the secondary washing tower of coal gas 2 inside, also be provided with circumference formula spiral tower tray 10; Its top also is provided with the solid valve tower tray 225 of multilayer, above the solid valve tower tray 225 of multilayer, also is provided with built-up type scum dredger 290.
In a preferred embodiment, the circumference formula spiral tower tray 10 that is used for secondary gas wash tower 2 of the utility model 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 inlet 204 that extends the secondary gas wash tower 2 tower walls outside;
Spiral tower tray main body 102, the setting of spiraling on by its lower edge 104 initial laterals in the inboard of spiral tower tray main body 102 around spray column 206, its outside engages with the inwall 22 of secondary gas wash tower 2.
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 spiral tower tray main body 102 downwards, and sidewall and bottom surface, lower end that the lower ends downward of spray column 206 extends beyond said spiral tower tray main body 102 lower ends are provided with a plurality of spray holes 208.
One more preferably in the embodiment, the circumference formula spiral tower tray 10 of the utility model further comprises:
Circumference formula 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 circumference formula combination bubble cap plate 50 downwards; And the spray column 206 between liquid phase distributor 30 and circumference formula combination bubble cap plate 50 is not provided with spray holes, and spray column 206 extends through the side and the bottom surface, lower end of one section spray column of circumference formula 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 is provided with 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 each ends away from annular liquid phase distribution plate 302 of a plurality of intake chutes 304 respectively, 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 four, six or eight respectively 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 circumference formula combination bubble cap plate 50 further comprises:
Fall liquid passage 502, be provided with 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 is provided with around a plurality of round bubble-caps 504, and each layer 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 each layer of two-layer at least arc bubble-cap 506 is four, six or eight; Correspondingly, stagger about 45 °, 30 ° or 22.5 ° respectively between the adjacent two layers arc bubble-cap 506 of two-layer at least arc bubble-cap 506.Certainly, the arc bubble-cap of each layer 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, each correspondence of wherein a plurality of cloth liquid mouths 306 be arranged on circumference formula 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 towards the interval between two sections arc bubble-caps along arc bubble-cap both sides after falling the outer of arc bubble-cap like this; Washing water are being flowed to the mid-way of one deck arc bubble-cap down by the interval between two sections arc bubble-caps afterwards, thus the flow process of prolongation washing water.
In the another embodiment of the utility model; A kind of device 1000 that is used for gas purification is provided; It is characterized in that; Comprise: elementary gas wash tower 1 and secondary gas wash tower 2; Be provided with the circumference formula spiral tower tray 10 and at least one deck spray thrower 13 that be positioned at circumference formula spiral tower tray below of the lower end of spiral tower tray main body 102 described above in the wherein elementary gas wash tower 1 with 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 be provided with in the secondary gas wash tower 2 above description the utility model gas distributor 60 and spray column 206 extends beyond the lower end of spiral tower tray main body 102 downwards and extend beyond the circumference formula spiral tower tray 10 that all evenly is provided with a plurality of spray holes 208 on spray column side and the bottom surface, lower end of spiral tower tray main body 102 lower ends downwards.
In a preferred embodiment; The below layering of the spiral tower tray main body 102 of elementary washing tower 1 set inside is provided with two-layer buck atomized liquid spray thrower 13; Every layer can be distributed with four, six, eight spray throwers symmetrically; Make the buck atomizing droplet from each spray thrower ejection, coal gas is carried out the humidification dedusting.
In another embodiment of the utility model; A kind of device 1000 that is used for gas purification is provided; It is characterized in that; Comprise: elementary gas wash tower 1 and secondary gas wash tower 2; Be provided with the circumference formula spiral tower tray 10 and at least one deck spray thrower that be positioned at circumference formula spiral tower tray below of the lower end of spiral tower tray main body 102 described above in the wherein elementary gas wash tower 1 with 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 be provided with in the secondary gas wash tower 2 above description the utility model gas distributor 60 and spray column 206 extends beyond the lower end of spiral tower tray main body 102 downwards and extend beyond the circumference formula spiral tower tray 10 that all evenly is provided with a plurality of spray holes 208 on spray column side and the bottom surface, lower end of spiral tower tray main body 102 lower ends downwards.
In a preferred embodiment; The below layering of the spiral tower tray main body 102 of elementary washing tower 1 set inside of the device that is used for gas purification 1000 of the utility model is provided with two-layer buck atomized liquid spray thrower 13; Every layer can be distributed with four, six, eight spray throwers symmetrically; Make the buck atomizing droplet from each spray thrower ejection, coal gas is carried out the humidification dedusting.
In a preferred embodiment, the device that is used for gas purification 1000 of the utility model 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 inlet of the downtake 16 of elementary gas wash tower 1; And the inlet 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 inlet 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, above the solid valve tower tray 225 of multilayer, be provided with built-up type scum dredger 290.
One more preferably in the embodiment, built-up type scum dredger 290 is made up of concave flow-guiding type wire mesh demister 292 and plate-fin entrainment separator 294.
Followingly the circumference formula spiral tower tray that is used for gas wash tower of the utility model and the device that is used for gas purification are specifically described with reference to accompanying drawing.
As shown in Figure 2, the gas distributor 60 of the utility model, it is arranged at the bottom of the secondary washing tower of coal gas (being smart washing tower) 2.The gas distributor 60 of the utility model comprises: gas buffer chamber 240, first dedusting gas entry pipe 26, gas distribution member 620 and gas distributor strut member 680.
Gas buffer chamber 240 is arranged on the bottom section of secondary washing tower 2, and it is gone up the side walls 22 and lower wall 22 ' formation of the Heisui River vent pipe 242 that is provided with and secondary washing tower 2 by the bottom 282 of the water-bath 280 that links to each other with the sidewall 22 of secondary washing tower 2 and its.
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 are provided with one heart; First cross structure 640 and second cross structure 660; And gas tube 284.Certainly, annular gas distributed pipeline 622,623,624 also can be the annular gas distributed pipeline of other shapes of roughly being provided with one heart, as square, and ellipse 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 be provided with 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, like three, four, five annular gas distributed pipeline 622,623,624 formations such as grade that roughly are provided with one heart.
Referring to Fig. 2, two gas tubes 284 are arranged in the water-bath 280 and symmetry is connected to first cross structure 640, with the gas communication in first cross structure, 640 cavitys, make and gas distribution member 620 gas communications.
Three the annular gas distributed pipelines 622,623,624 in the gas distribution member 620 and first cross structure 640 and second cross structure 660 are provided with a plurality of straight holes 628,642,662 at it on the direction of 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 outward inclining down.
Gas distributor strut member 680 is symmetricly set on the bearing of trend of gas distribution member 620, makes gas distribution member 620 symmetries be connected on the inwall of smart washing tower 2 sidewalls 22 of coal gas.
The bottom of water-bath 280 is set to taper, and the Heisui River vent pipe 242 that is provided with on it is positioned at the central part of water-bath 280 bottoms.The diameter of a plurality of straight holes 628 that are provided with 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 are provided with 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 are provided with 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 confirmed according to the size of the coal gas amount of handling.
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 confirmed 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.
The gas distributor 60 of the utility model; From the water-gas of a plurality of straight holes ejections of being provided with at its gas distribution member 620 and first cross structure 640 and second cross structure 660 from annular gas distributed pipeline 622; 623; Near the rising of 624 and first cross structure 640 and second cross structure 660, and the gas of a plurality of tangential holes ejections that are provided with from gas distribution member 620 is because the structure of tangential hole outward inclining makes from the gas of tangential hole ejection to away from annular gas distributed pipeline 622; 623,624 direction ejection.Like this, make that water-gas obtains to distribute uniformly as far as possible in whole water-bath 280, reduce the possibility that accumulates air pocket again simultaneously to a certain extent.
Once more with reference to Fig. 2, in the gas buffer chamber 240 that the bottom that gets into the secondary washing tower (being smart washing tower) 2 of the gas distributor that comprises the utility model through first dedusting gas entry pipe 26 through the coal gas after the elementary washing is provided with.
Like Fig. 1 a, Fig. 1 b, Fig. 2 and shown in Figure 3; Coal gas leaves the gas buffer chamber 240 through the smart washing tower of the gas exit 264 entering 2 bottoms setting of the first dedusting gas entry pipe 26 of smart washing tower by the top exit 904 of secondary cyclone 9; Coal gas rises then; Get into gas distribution member 620 via gas tube 284, carry out the preliminary distribution of gas.
Then; The annular gas distributed pipeline 622 that roughly with one heart be provided with of coal gas in passing through gas distribution member 620; 623; The a plurality of downward opening straight hole 628 that evenly is provided with on 624 and be tilted to outside tangential slot 626 ejections down with a plurality of opening straight holes 628 are arranged alternately also is provided with a plurality of straight holes 642,662 from first cross structure 640 and second cross structure, 660 its directions towards water-bath 280 bottoms simultaneously and sprays; Get into the water-bath chamber 280 of smart washing tower 2, then upwards get into the top of secondary washing tower 2 again.
In order to prevent to result in blockage after the parking, straight hole 628 all is set to perforate down with tangential slot 626 openings.
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, between 624 or the coal gas that rises from straight hole place far away of smart washing tower 2 inwalls 22 few; And coal gas sprays towards between two adjacent annular gas distributed pipelines 622,623,624 or inwall 22 places of smart washing tower 2 after being tilted to outside tangential slot 626 down through opening laterally; Reach and make the equally distributed purpose of coal gas; The washing water of water-bath 280 produce bigger contact area in coal gas and the washing tower 2 like this, thereby obtain better dust removing effects, and promptly these intensive straight holes that are uniformly distributed with and tangential slot make big originally strand agglomerating coal gas in water-bath, be divided into the thin strand of coal gas that much is uniformly distributed with; Increase the dedusting area, improved the efficient of water bath dust-removing.
Also, coal gas sprays laterally because being tilted to outside tangential slot 626 rear-inclineds down through opening; For the high pressure gas that pressurized-gasification furnace produces, the washing water that will promote water-baths 280 in the washing tower 2 motion of spinning, and the washing water of the interior water-bath of the washing tower in the motion promote the coal gas eddy flow conversely; Promote more uniform distribution of coal gas; And because 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; After coal gas left gas distributor 60, rising passed liquid level 250, circuitous again pass two-layer tower tray 265 with from the 270 counter current contact dedustings of high pressure buck after the purification of usage on black water system; Then pass the spraying area 276 of a steam condensate atomized liquid or de-salted water atomized liquid, get into circumference formula combination bubble cap plate 50 then.
Shown in Fig. 6 a and Fig. 6 b, to rising, toward descending, both closely contact the part washing water coal gas, the adverse current dedusting by narrow air rising hole 508 from the narrow air rising hole 508 of circumference formula combination bubble cap plate 50.
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 then along the spiral tower 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 along spiral tower tray main body 102 and coal gas in opposite directions simultaneously, thereby remove the 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 through four tubaeform cloth liquid mouths 306 by intake chute 302 drop to the periphery on the circumference formula 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; With also having at interval between two adjacent arc bubble-caps in one deck.Washing water circuitous flowing between the arc bubble-cap makes its flow process elongated like this, makes the residence time of washing water on this tower tray and soak time lengthening, thereby makes and can absorb in the coal gas more impurity with more a spot of liquid.
In order to make washing water flow to decline liquid passage 502 more equably, circumference formula 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 the steam condensate atomized liquid or the de-salted water atomized liquid of ejection, washing water are dispelled to be fallen, and has the part washing water to be fallen by the air rising hole in the bubble-cap 508 simultaneously; Coal gas is upwards overflowed by a plurality of venting holes 510 that evenly are provided with on the arc bubble-cap 504; Steam condensate atomized liquid or de-salted water atomized liquid wash coal gas with the washings that is scattered simultaneously like this, make the grit of cohesion fall very soon, reduce the dust content of gas that gets into 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 built-up type scum dredger 290 of coal gas through constituting by concave flow-guiding type wire mesh demister 292 and plate-fin entrainment separator 294; Further remove mist; Can obtain the low-down dustless coal gas of dustiness, dustless coal gas is discharged the back system that gets into through the gas exit 210 of secondary washing tower.
A series of washing more than the process is removed original dustiness with regard to the trickle grit in the very low coal gas, makes the dustiness of coal gas be reduced to low-down level, and built-up type scum dredger 290 stopping states will reduce greatly.
Different with Chinese patent 200810018399.0, the washings of the upper strata tower tray 225 in the utility model 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.The built-up type scum dredger 290 of coal gas through being made up of concave flow-guiding type wire mesh demister 292 and plate-fin entrainment separator 294 further removed mist then, 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 a gas exit 210, and dustless clean gas is gone to back system (like systems such as methyl alcohol conversion, low-temperature rectisols) thus; Smart washing tower 2 from up to down is provided with plate-fin entrainment separator 292 and concave flow-guiding type wire mesh demister 294, next is respectively arranged with tower side steam condensate or de-salted water inlet 232, the solid valve tower tray 225 of several 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 are earlier with 80 atomizings become steam condensate atomized liquid or de-salted water atomized liquid small droplets from the dustless clean gas entering of the compression of back system mixed aerosol device; Get into spray column 206 then and in the space of narrow tower tray 10, spray high-density water smoke; This moment, coal gas continued on spiral tower 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 with steam condensate atomized liquid or the de-salted water atomized liquid small droplets or the cohesion of trickle grit of follow-up ejection, fall, subsequently by along spiral tower tray spiral and under steam condensate or de-salted water sweep away, reach smart dust separating effect.
The inlet of the grey water-circulating pump 230 of washing tower 2 is arranged on water-bath 280 tops and is lower than liquid level 250 simultaneously again; Make that being in the buck few and cleaner than the solid particulate on top fully obtains recycle; 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 waters, go to coal gasifier as chilled water with go to secondary cyclone 9 as the dedusting washing water.
Referring to Fig. 3, the device that is used for gas purification 1000 of the utility model comprises, elementary gas wash tower (coal gas is slightly washed tower) 1 and secondary gas wash tower (the smart washing tower of coal gas) 2 wherein are provided with gas distributor described above 60 in the cleaned coal gas wash tower 2.
With reference to Fig. 3; Raw gas at first gets into primary cyclone 7 through a plurality of raw gas imports 702; Through cyclonic separation, after gas exit 704 discharges of its top setting, the downtake 16 by elementary washing tower 1 gets into elementary washing tower 1 again; Coal gas upwards spirals upwards via the spiral tower tray main body 102 like the shown circumference formula of Fig. 4 b spiral tower tray 10 of elementary washing tower 1 set inside, and the gas exit 110 that is provided with from elementary washing tower 1 top is discharged.Wherein, the lower end of the spiral tower tray main body 102 of elementary washing tower 1 set inside is with the lower end closed of spray column 206.
As shown in Figure 3, the below layering of the spiral tower tray main body 102 of elementary washing tower 1 set inside is provided with 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 is provided with from elementary washing tower 1 top is discharged then gets into secondary cyclone 9, coal gas are through after the cyclone dust removal foam removal of secondary cyclone 9, and the coal gas gas exit 904 of portion's setting is from it discharged.
Once more with reference to Fig. 2 and 3; Coal gas gets into the inlet of the first dedusting gas entry pipe 26 of smart washing tower (secondary washing tower) 2 bottoms setting; Make progress then through the gas distributor 60 of above description; Then coal gas continues upwards through passing the combination bubble cap plate 50 and spiral tower tray 30 like the shown circumference formula of Fig. 4 c spiral tower tray 10 after the water-bath 280 again; Spiral upwards via the spiral tower tray main body 102 of the circumference formula spiral tower tray 10 of secondary washing tower 2 set inside again and contact washing with the water that flows down from spiral tower tray main body 102 with water smoke by spray column 206 ejections; Coal gas through washing makes progress via four layers of solid valve tower tray 225 and built-up type scum dredger 290 again, and the purification gas exit 210 that is provided with from secondary washing tower 2 tops is at last discharged system after sending into.
The device that comprises the secondary washing tower of gas distributor coal gas of the utility model and be used for gas purification abandoned cause be prone to stop up, easy to wear, be prone to fouling and the big 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, problems such as overcoming that the existing in prior technology pressure drop is big, energy consumption is high, be prone to stop up, trickle grit decreasing ratio is low and the work period is short.Be used for washing because of the ultrasonic atomization device only needs less water can spray a large amount of night fogs, practiced thrift water greatly, and water gaging all carry out internal recycle greatly, only need a small amount of moisturizing, so this technology water-saving performance is good.Last dustiness can drop to 0.1mg/m
3Below.
The gas distributor that the utility model provides can be applied in the purification of coal gas of pressurized gasification production that with coal, refinery coke, biomass and/or flammable trade waste is raw material.
The secondary washing tower of the coal gas that is used for gas purification of the gas distributor that comprises the utility model that the utility model provides can be applied in the purification of coal gas that with coal, refinery coke, biomass and/or flammable trade waste is the pressurized gasification production of raw material.
The gas cleaning device of the gas distributor that comprises the utility model that the utility model provides can be applied in the purification of coal gas of pressurized gasification production that with coal, refinery coke, biomass and/or flammable trade waste is raw material.
Although the various embodiments of the utility model are described in context through embodiment, the utility model is not limited in this.Therefore, it is the restriction of the utility model scope that above description should be used as, and the scope of the utility model is limited appended claim.It will be appreciated by those skilled in the art that under the situation of the spirit that does not deviate from the utility model and can make various changes and change to the utility model, it all will fall in the protection domain of the utility model.
Claims (11)
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 said secondary washing tower (2), its side walls (22) and lower wall (22 ') by the bottom (282) of the water-bath (280) that links to each other with the sidewall (22) of said secondary washing tower (2) and Heisui River vent pipe (242) that is provided with on it and said secondary washing tower (2) constitutes;
2) first dedusting gas entry pipe (26); Run through the sidewall (22) of said secondary washing tower (2) and be down horizontal " L " type; Its gas entry (262) is arranged on outside the sidewall (22) of said secondary washing tower (2), and its gas exit (264) is arranged on inside, said 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 are provided with one heart;
Ii) at least the first cross structure (640) and second cross structure (660); Be arranged at least two said annular gas distributed pipelines (622 in the said gas distribution member (620); 623; 624) between, said at least the first cross structure (640) and second cross structure (660) inside are hollow, make gas communication between at least two said annular gas distributed pipelines; And
Iii) at least one gas tube (284), its be arranged in the said water-bath (280) and with said first cross structure (640) cavity in gas communication, make and said gas distribution member (620) gas communication;
Wherein, At least two said annular gas distributed pipelines (622,623,624) in the said gas distribution member (620) are provided with a plurality of straight holes (628 with said at least the first cross structure (640) and its direction towards said water-bath (280) bottom of second cross structure (660); 642; 662), and at least two said annular gas distributed pipelines (622,623 in the said gas distribution member (620); 624) on the direction of water-bath (280) bottom, be provided with a plurality of tangential holes (626) with said a plurality of straight holes (628) interleaved at it, the opening of said a plurality of tangential holes (626) is set to outward inclining down.
2. gas distributor according to claim 1 (60) further comprises:
4) gas distributor strut member (680), it is arranged on the said gas distribution member (620), makes said gas distribution member (620) be connected on the inwall of sidewall (22) of the smart washing tower of said coal gas (2).
3. gas distributor according to claim 1 and 2 (60); Wherein said gas distribution member (620) is made up of three annular gas distributed pipelines (622,623,624) that roughly are provided with one heart; Said at least one gas tube (284) is set to 2 gas tubes (284) and is symmetricly set on the pipeline of said water-bath (280) and said first cross structure (640); And said 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 said Heisui River vent pipe (242) that is provided with on it is positioned at the central part of said water-bath (280) bottom.
5. gas distributor according to claim 1 and 2 (60), wherein the diameter of the last said a plurality of straight holes (628) that are provided with of at least two said annular gas distributed pipelines (622,623,624) is 5-80mm, the length of side of said a plurality of tangential holes (626) is 5-80mm.
6. gas distributor according to claim 1 and 2 (60); Wherein at least two said annular gas distributed pipelines (622,623,624) are that vertical cross-section is the pipeline of circle; Said annular gas distributed pipeline diameter is 30～300mm; Wherein each diameter at least two said annular gas distributed pipelines (622,623,624) is identical or different.
7. gas distributor according to claim 1 and 2 (60), wherein at least two said annular gas distributed pipelines (622,623; 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 said annular gas distributed pipelines (622,623,624).
8. gas distributor according to claim 2 (60), wherein said gas distributor strut member (680) is symmetricly set on the outer wall of said gas distribution member (620) on said first cross structure (640) bearing of trend.
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 said secondary gas wash tower (2).
10. secondary gas wash tower according to claim 9 (2); Wherein also be provided with circumference formula spiral tower tray (10) in inner liquid level (250) top of said secondary gas wash tower (2); Its top also is provided with the solid valve tower tray (225) of multilayer, also is provided with built-up type scum dredger (290) in the top of the solid valve tower tray (225) of said multilayer.
11. a device (1000) that is used for gas purification is characterized in that, comprises that 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204055289U CN202322761U (en) | 2011-10-21 | 2011-10-21 | Gas distributor, secondary coal gas scrubber and coal gas purifying device for efficient washing and purifying process of coal gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204055289U CN202322761U (en) | 2011-10-21 | 2011-10-21 | Gas distributor, secondary coal gas scrubber and coal gas purifying device for efficient washing and purifying process of coal gas |
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| Publication Number | Publication Date |
|---|---|
| CN202322761U true CN202322761U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204055289U Withdrawn - After Issue CN202322761U (en) | 2011-10-21 | 2011-10-21 | Gas distributor, secondary coal gas scrubber and coal gas purifying device for efficient washing and purifying process of coal gas |
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| Country | Link |
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| CN (1) | CN202322761U (en) |
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| CN102850182A (en) * | 2012-09-28 | 2013-01-02 | 神华集团有限责任公司 | Coarse methanol synthesis system |
| CN102872769A (en) * | 2012-09-28 | 2013-01-16 | 神华集团有限责任公司 | Gas distributor and slurry bed reactor and crude carbinol synthetic system both comprising same |
| CN103060018A (en) * | 2011-10-21 | 2013-04-24 | 神华集团有限责任公司 | Gas distributor for coal gas high-efficiency washing and cleaning technique, secondary coal gas washing tower, coal gas cleaning device and application thereof |
| CN107116030A (en) * | 2016-02-25 | 2017-09-01 | 神华集团有限责任公司 | The piece-rate system and separation method of solid mixture |
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2011
- 2011-10-21 CN CN2011204055289U patent/CN202322761U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060018A (en) * | 2011-10-21 | 2013-04-24 | 神华集团有限责任公司 | Gas distributor for coal gas high-efficiency washing and cleaning technique, secondary coal gas washing tower, coal gas cleaning device and application thereof |
| CN103060018B (en) * | 2011-10-21 | 2014-04-16 | 神华集团有限责任公司 | Gas distributor for coal gas high-efficiency washing and cleaning technique, secondary coal gas washing tower, coal gas cleaning device and application thereof |
| CN102850182A (en) * | 2012-09-28 | 2013-01-02 | 神华集团有限责任公司 | Coarse methanol synthesis system |
| CN102872769A (en) * | 2012-09-28 | 2013-01-16 | 神华集团有限责任公司 | Gas distributor and slurry bed reactor and crude carbinol synthetic system both comprising same |
| CN102850182B (en) * | 2012-09-28 | 2014-12-10 | 神华集团有限责任公司 | Coarse methanol synthesis system |
| CN102872769B (en) * | 2012-09-28 | 2015-04-22 | 神华集团有限责任公司 | Gas distributor and slurry bed reactor and crude carbinol synthetic system both comprising same |
| CN107116030A (en) * | 2016-02-25 | 2017-09-01 | 神华集团有限责任公司 | The piece-rate system and separation method of solid mixture |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20140416 |
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