CN206103657U - Washing absorption tower of marsh gas purification usefulness - Google Patents
Washing absorption tower of marsh gas purification usefulness Download PDFInfo
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- CN206103657U CN206103657U CN201620968367.7U CN201620968367U CN206103657U CN 206103657 U CN206103657 U CN 206103657U CN 201620968367 U CN201620968367 U CN 201620968367U CN 206103657 U CN206103657 U CN 206103657U
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Abstract
The utility model discloses a be equipped with the sum between the washing absorption tower of marsh gas purification usefulness, the inside liquid phase import of barrel and gaseous phase import distributor and be odd sieve, the sieve is formed by odd number column plate and the vertical range in even number column plate interval and the superiors are the odd number column plate with lower floor column plate, be equipped with on every block of odd number column plate two keep off the liquid board, centers are equipped with detachable inspection hole closure plate, are equipped with the overflow weir on the inspection hole closure plate, odd number column plate both ends are faced and are had the down -flow plate, the position that even number column plate both sides and odd number column plate down -flow plate correspond is equipped with the overflow weir of " the segment of a circle ", and the center of even number column plate is equipped with can dismantle the downspout. It is little that this absorbs the tata resistance, adopts the mode of gas, the contact of liquid cocurrent flow on the column plate, has lengthened gas -liquid contact time, has strengthened gas -liquid mass transfer effect, and the absorption efficiency is high, the low equipment investment. The water uptake liquid that this tower enabled in the tower contacts with marsh gas fully effectively, carbon dioxide's efficiency in the improvement water uptake liquid desorption marsh gas, and marsh gas purification effect is showing more.
Description
Technical field
This utility model is related to methane purification and prepares bio-natural gas field, more particularly to a kind of water of methane purification
Wash absorption tower.
Background technology
Absorption tower is the equipment for realizing absorption operation, is divided three classes by the gas-liquid form that contacts, and the first kind is gas with gas
Bubble form dispersion plate column, bubble absorbing tower, stirring bubble absorbing tower in the liquid phase；Equations of The Second Kind is liquid with droplet-like dispersion
Ejector in the gas phase, Venturi tube, spray tower；3rd class is that liquid moves the packing material absorbing contacted with gas phase with membranaceous
Tower and film-falling absorption tower.In tower the type of flow of gas-liquid two-phase can adverse current also can cocurrent, generally using counter-current operation, absorbent
Added with tower top and flowed from top to bottom, contacted with the gas for flowing from bottom to top, the liquid for absorbing absorbent is discharged from bottom of towe,
Purified gas is discharged from tower top.
Biogas is a kind of low heat value biomass gas based on methane and carbon dioxide, can be by desulfurization, de- dioxy
Change the purified treatment link systems such as carbon, dehydration to refine to meet the bio-natural gas of bio-natural gas standard.The biogas of early stage is main
Come from agricultural wastes process, small scale, gas production is low, be mostly used in peasant household's combustion gas and use by oneself, with environmental conservation, environment
The consciousness of improvement strengthens, and the utilization to the renewable sources of energy is also gradually paid attention to, and biogas production scale is increasing, and major part is derived from
Sewage, sludge, the anaerobic fermentation system of garbage disposal, the utilization of biogas is also slowly connected to the grid from generating and develops into purification and make
Bio-natural gas are incorporated to pipeline network of fuel gas in city or further process is made vehicular compressed bio-natural gas and supplies gas station, therefore, carry
Pure is the vital link in one, Gas application field.
Methane purification has four kinds of methods it is achieved that being respectively absorption process, pressure swing adsorption method, condensation at low temperature and membrance separation
Method, widely used is the WATER-WASHING METHOD in absorption process, by WATER-WASHING METHOD to remove biogas in carbon dioxide be in field
Common technology, absorption refining method is realized using the physical chemistry absorption characteristic of Amine Solutions and carbon dioxide, that is, exist
Decarburization purification methane is carried out with the carbon dioxide generation absorbing reaction in biogas under pressurization, normal temperature condition in absorption tower, is absorbed
There is resolving inversely reaction under decompression, heating condition of the rich solution in regenerator, discharge highly purified carbon dioxide, together
When rich solution obtain regenerating and possess the ability for reuptaking carbon dioxide, so as to realize continuous decarburization purification of the biogas in absorption tower
Methane process, and so that decarbonizing liquid is continuously absorbed, regeneration cycle works.The absorption efficiency on absorption tower directly affects biogas
Refining effect, existing plate column adopts monolayer sieve plate, and speed is fast, and absorption efficiency is low, it is often necessary to use substantial amounts of absorbing liquid
Expected assimilation effect is can be only achieved, absorbing liquid absorption is insufficient to be just discharged away, is extremely wasted.Therefore, it is necessary to existing
Some absorption towers are improved so as to which the absorbing liquid for spraying out absorbs more fully, so as to lift the refining effect of biogas, improve natural pond
The value of gas.
The content of the invention
To solve above-mentioned at least one problem that existing absorption tower is present, the purpose of this utility model is to provide a kind of gas
Body and liquid are fully contacted on column plate in the form of cocurrent, eddy flow mixing, and liquid phase is time of contact long on column plate, absorption efficiency
A kind of water absorption tower of high methane purification.
For achieving the above object, this utility model provides technical scheme below：
A kind of water absorption tower of methane purification, including cylinder, cylinder top is provided with gaseous phase outlet, and bottom is provided with gas phase
Import distributor, cylinder body bottom is provided with liquid-phase outlet, and cylinder top is provided with fluid inlet, the fluid inlet and gas phase of inner barrel
Be provided between import distributor sum for odd number sieve plate, the sieve plate by odd number column plate and even number column plate interval be vertically arranged and
Into and the superiors and orlop column plate are odd number column plate, every block of odd number column plate is provided with two liquid barriers, centers and is provided with detachably
Inspection hole closure plate, downflow weir is housed on inspection hole closure plate, odd number column plate two ends are towards having down-flow plate；On every block of even number column plate
It is provided with two liquid barriers and, even number column plate both sides with odd number column plate down-flow plate corresponding position corresponding with odd number column plate descending liquid Board position
The downflow weir of " arch " is installed, the center of even number column plate is provided with detachable downspout.
Further, odd number column plate and even number column plate are provided with punching areas, and the punching areas are concentric circular, punching areas
Inside is provided with staggers evenly distributed punching along center by equilateral triangle, and punching is inclined with column plate by certain angle, incline direction
Consistent with the liquid flow direction on column plate, punching section is vertical with concentric circular and vertical with column plate.
Preferably, the aperture of the punching is 6-20mm, and hole centre-to-centre spacing is 2-3 times of aperture.
Preferably, the vertical column plate of down-flow plate on undermost odd number column plate is installed and down-flow plate lower end extends cylinder bottom
Portion, the down-flow plate lower end edge vertical angles on other odd number column plates to tower wall direction inclines 20 °.
Preferably, also enter including wire mesh demister, grate plate, upper manhole, lower manhole and sewage draining exit, gaseous phase outlet and liquid phase
Be provided with wire mesh demister between mouthful, upper manhole is located at below wire mesh demister, servant's hole position below gas phase import distributor,
Fluid inlet bottom is provided with sewage draining exit, and grate plate is located between undermost odd number column plate and gas phase import distributor.
Preferably, the cylinder side of grate plate bottom is provided with two liquidometer root pipes one on the other, and liquid level above
Meter root pipe is less than gas feed distributor.
This utility model has the advantages that：（1）The absorption tower absorption efficiency is high, and air-liquid cocurrent is adopted on column plate
The mode of contact, biogas is realized biogas and is preferably uniformly distributed by inclined hole and aqueous solution current contacting, also provide enhanced gas-liquid
Between flowing, promote dissolving and diffusion profile of the carbon dioxide in methane to aqueous solution, absorption efficiency is improve, between each column plate
Descending liquid by downflow weir enter next layer of column plate, effectively prevent column plate gas and take a shorter way, be effectively improved in biogas inhale
The effect of loss of thick fluid removing carbon dioxide is received, refining effect is more significantly；（2）Tower resistance is little, and gas phase, liquid phase are in moving on each column plate
State and stream mode, the liquid level formed above column plate is high, and so, in normal operation, gas is in tower domestic demand
The liquid layer thickness for passing through is not high, and tower resistance can maintained and operated within 20KPa；（3）Investment is saved, according to tower structure feature,
The tower adopts gas and liquid flowing, the absorption pattern of liquid phase eddy flow, and distinctive gas-to-liquid contact is by its mass-transfer efficiency than traditional filler water
Absorption tower efficiency high is washed, equipment tower be can be made smaller, compact, equipment investment will reduce about 40%；（4）May be used also on the absorption tower
It is applied widely suitable for other field, the biphase absorption operating mode of air-liquid is can be widely used in, according to payload, medium difference
To adjust the parameters such as tower diameter, tray spacing, sieve plate punching aperture and spacing, descending liquid pipe diameter, height of weir plate, to meet difference
The demand of operating mode.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art does simple introduction, it should be apparent that, drawings in the following description are these
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Accompanying drawing 1 is the structural representation of this utility model embodiment.
Accompanying drawing 2 is the A-A generalized sections of this utility model embodiment；
Accompanying drawing 3 is the B-B generalized sections of this utility model embodiment；
Accompanying drawing 4 is the C-C generalized sections of this utility model embodiment；
Accompanying drawing 5 is I holes enlarged drawing in accompanying drawing 3 and accompanying drawing 4.
In accompanying drawing, 1 is gas phase import, and 2 is wire mesh demister, and 3 is upper manhole, and 4 is fluid inlet, and 5 is liquid barrier, and 6 are
Inspection hole closure plate, 7 is odd number column plate, and 8 is the down-flow plate on odd number column plate, and 9 is the downflow weir of even number column plate, and 10 is even number tower
Plate, 11 is the downspout on even number column plate, and 12 is the downflow weir at odd number column plate center, and 13 is grate plate, and 14 is gas phase import point
Cloth device, 15 is the down-flow plate of orlop odd number column plate, and 16 is liquidometer root pipe, and 17 is lower manhole, and 18 is liquid-phase outlet, and 19 are
Sewage draining exit, 20 is cylinder；101 is gas phase import distributor, and 102 is liquid-phase outlet, and 103 is liquidometer root pipe, 104 be most under
The down-flow plate of layer odd number column plate.
Specific embodiment
This utility model is further described below by specific embodiment.
A kind of water absorption tower of methane purification, including cylinder 20, cylinder top is provided with gaseous phase outlet 1, and bottom is provided with
Gas phase import distributor 14, cylinder body bottom is provided with liquid-phase outlet, and cylinder top is provided with fluid inlet, the fluid inlet of inner barrel
Sieve plate of the sum for odd number is provided between 4 and gas phase import distributor 14, sieve plate is vertical by odd number column plate and even number column plate interval
Arrangement is formed and the superiors and orlop column plate are odd number column plate, and every block of odd number column plate 7 is provided with two liquid barriers 5, center and sets
There is dismountable inspection hole closure plate 6, downflow weir 12 is housed on inspection hole closure plate, odd number column plate two ends court has down-flow plate 8；Often
Block even number column plate 10 is provided with two liquid barriers and corresponding with odd number column plate descending liquid Board position, even number column plate both sides and odd number column plate
The corresponding position of down-flow plate is provided with the downflow weir 9 of " arch ", and the center of even number column plate is provided with detachable downspout 11.
The dismountable downspout of one activity, the liquid on column plate is entered in next layer of odd number column plate by middle downspout
The heart.If next layer of column plate inspection need to be entered, central well down take is taken apart.
Odd number column plate and even number column plate can arrange punching areas, and the punching areas are concentric circular, are set inside punching areas
You Yan centers are staggered evenly distributed punching by equilateral triangle, and punching is inclined with column plate by certain angle, incline direction and column plate
On liquid flow direction it is consistent, punching section is vertical with concentric circular and vertical with column plate.As punching aperture be 6-20mm, hole
Centre-to-centre spacing is 2-3 times of aperture.As shown in Figure 5, on odd number column plate and even number column plate, liquid flow direction is horizontal, and
Because punching and column plate are inclined by certain angle, so the flow direction of gas tilts upward.
The vertical column plate of down-flow plate 15 on undermost odd number column plate can be installed, down-flow plate lower end extends cylinder body bottom,
, it is ensured that preventing inlet tower gas body from taking a shorter way in liquid level of the bottom of a pan liquid level at 30% in insertion tower；Drop on other odd number column plates
The lower end edge vertical angles of liquid plate 8 to tower wall direction inclines 20 °, reduces distance between down-flow plate lower end and tower wall, it is to avoid because of peace
Fill even number sieve plate both sides downflow weir and reduce the opening area area on even number sieve plate.
The absorption tower can also arrange wire mesh demister, grate plate, upper manhole, lower manhole and sewage draining exit, gaseous phase outlet and
Wire mesh demister 2 is provided between fluid inlet, upper manhole 3 is located at below wire mesh demister, and lower manhole 17 is positioned at gas phase import point
Below cloth device, fluid inlet bottom is provided with sewage draining exit 19, and grate plate is located at undermost odd number column plate and gas phase import is distributed
Between device.
The absorption tower can be provided with two liquidometer root pipes one on the other with the cylinder side in grate plate bottom, and on
The liquidometer root pipe in face is less than gas feed distributor, such as it is higher than liquidometer above that can install gas feed distributor
The position of more than root pipe 200mm, so as to prevent liquid during high level from sealing in gas tube.As shown in Figure 2,101 is gas
Phase import distributor, 102 is liquid-phase outlet, and 103 is liquidometer root pipe, and 104 is the down-flow plate of orlop technology column plate.
It is as follows using the gas phase course of work in tower during the absorption tower in methane purification field：Biogas is entered from tower bottom, is led to
Cross after gas distributor is uniformly distributed, from bottom to top, pass sequentially through each column plate inclined hole, it is consistent with inclined hole direction with column plate top
Absorbing liquid together eddy flow, be fully contacted, the carbon dioxide in biogas is progressively absorbed by the absorbing liquid on column plate, is more up walked, gas
Remaining carbon dioxide is lower in body, and carbon dioxide absorption amount is lower in water on column plate, absorbability is stronger, so as to realize natural pond
When gas enters top column plate, the carbon dioxide in biogas has fully been absorbed by liquid absorption removing, reaches technic index requirement.Natural pond
Gas enters top of tower space buffer, and the droplets fall back of major part entrainment is to column plate, remainder water droplet, through tower top silk screen foam removal
Separated after device, the biogas of carbon dioxide removal is drawn from tower top, is sent to rear processing apparatus.
Now, it is as follows using the liquid phase course of work in tower during the absorption tower：Absorbing liquid from the fluid inlet of tower top pass through into
Tower liquid house steward, introduces on bottom of towe ground floor odd number sieve plate, two strands of liquid is split into by the liquid barrier on column plate, along column plate
It is in a good mood hour hands aspect eddy flow, as shown in arrow in accompanying drawing 3, respectively enters both sides down-flow plate, flows in even number column plate downflow weir, then
Overflow enters even number column plate, and the liquid flowed out from both sides downflow weir is not had into tower wall dextrorotation by liquid barrier on even number column plate
Stream, as shown in arrow in accompanying drawing 4, the downspout at the column plate center finally collected, under being flowed into by even number column plate central well down take
Downflow weir on one layer of odd number column plate center closure plate, then odd number column plate is flowed into from downflow weir, repeating process above, liquid is in tower
Inside successively decline from top to bottom, the gas entered above column plate through column plate inclined hole with column plate lower section, the eddy flow side being consistent
To current contacting extends soak time.Bottom odd number column plate down-flow plate is eventually passed through into the tower the bottom of a pan, is drawn by liquid-phase outlet
Go out, the absorbing liquid of absorbing carbon dioxide is sent to the regenerating unit of rear operation and is regenerated.
This utility model is combined with the advantage of two kinds of structures of sieve-plate tower and rotating stream tray scrubber, and tower plate structure is innovated,
The distribution and the way of contact of gas and liquid on column plate are optimized, extends gas-liquid contact time, improve assimilation effect and tower effect
Rate.Major advantage is embodied in the following aspects：
（1）The flow direction optimization of liquid：Change liquid flowing on odd, even several column plates using the liquid barrier water conservancy diversion on column plate
Direction, on odd number column plate, liquid is flowed into by column plate overcentre, is overflowed by the downflow weir surrounding in odd number column plate centre,
Solution is guided to by two liquid baffle boards is divided into two strands in right handed fluid along column plate center, the rotation per fluid streams
The down-flow plate of two symmetrical settings near tower wall is diverted into, into the downflow weir of next layer of even number column plate, liquid is by both sides
Downflow weir flow into even number column plate on, after two liquid barrier water conservancy diversion formed two strands along the centripetal clockwise direction eddy flow of tower wall
Fluid, finally, the liquid on even number column plate is pooled to the downspout at column plate center and flows into next layer of odd number column plate centre
Downflow weir in, be so alternately repeated, fluid from top to bottom successively flows into each column plate in tower, the descending liquid arranged between column plate
Downflow weir, effectively prevents gas in tower and takes a shorter way between two column plates.
（2）Gas flow direction optimizes：Compare Conventional plate-type tower vertical drilling or installation riser, bubble-cap etc. on column plate
Mode forms the mode of the gas and liquid adverse current perpendicular contact in tower, and parallel type spiral board sieve plate absorber focuses on prominent tower
Gas, liquid realizes the way of contact of " cocurrent " on plate, and certain angle of inclination punching is pressed on each layer column plate, and 6- is commonly used in punching aperture
10mm, also visual absorbing liquid surface tension situation is from the bigger aperture in aperture（10-20mm）.Hole centre-to-centre spacing typically takes aperture
2-3 times.Punching areas are along column plate center distance 15-25mm concentric circular, and by the staggered uniform, incline direction of equilateral triangle
It is consistent with liquid flow direction, make the gas below each column plate by the inclined hole on sieve plate, into column plate top, gas is in column plate
The flow direction of top is consistent with the liquid flow direction on column plate, and gas and liquid are on column plate in the form of cocurrent, eddy flow mix
It is fully contacted, extends the time of gas-to-liquid contact on column plate, improves absorption efficiency.
（3）The optimization of column plate descending liquid device and downflow weir：On the premise of descending liquid is not affected, by under odd number column plate down-flow plate
End inclines 20 ° along vertical angles to tower wall direction, reduces distance between down-flow plate lower end and tower wall, it is to avoid because installing even number sieve
Plate both sides downflow weir and reduce the opening area area on even number sieve plate.The downspout at even number column plate center is set to removably
DN450 flanges connecting length is the downspout of 250mm, and lower end is DN450/DN300 concentric reducers, is realized in the inspection of odd number column plate center
Find out and stop and on plate downflow weir is installed and the target of aperture area area on column plate is not reduced.After optimization, tower operating flexibility becomes big,
Under underload, the operating mode of low liquid phase flow, be also not in because of column plate liquid level not enough, and there is gas and walk close between column plate
The problem on road.
Specific embodiment used herein is set forth to principle of the present utility model and embodiment, and the above is implemented
The explanation of example is only intended to help and understands method of the present utility model and its core concept.The above is only of the present utility model
Preferred implementation, it is noted that due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for this
For the those of ordinary skill of technical field, on the premise of without departing from this utility model principle, can also make some improvement,
Retouching changes, it is also possible to be by rights combined above-mentioned technical characteristic；These improve retouching, change or combine,
Or it is not improved the design of utility model and technical scheme are directly applied to into other occasions, be regarded as of the present utility model
Protection domain.
Claims (6)
1. a kind of water absorption tower of methane purification, including cylinder, cylinder top is provided with gaseous phase outlet, and bottom is provided with gas phase and enters
Mouth distributor, cylinder body bottom is provided with liquid-phase outlet, and cylinder top is provided with fluid inlet, it is characterised in that the liquid phase of inner barrel
Sieve plate of the sum for odd number is provided between import and gas phase import distributor, the sieve plate is spaced by odd number column plate and even number column plate
It is vertically arranged and forms and the superiors and orlop column plate are odd number column plate, every block of odd number column plate is provided with two liquid barriers, centers
Dismountable inspection hole closure plate is provided with, downflow weir is housed on inspection hole closure plate, odd number column plate two ends court has down-flow plate；Per block
Even number column plate is provided with two liquid barriers and corresponding with odd number column plate descending liquid Board position, even number column plate both sides and odd number column plate descending liquid
The corresponding position of plate is provided with the downflow weir of " arch ", and the center of even number column plate is provided with detachable downspout.
2. the water absorption tower of methane purification according to claim 1, it is characterised in that odd number column plate and even number column plate
Punching areas are provided with, the punching areas are concentric circular, are provided with to stagger by equilateral triangle along center inside punching areas and uniformly arrange
The punching of row, punching is inclined with column plate by certain angle, and incline direction is consistent with the liquid flow direction on column plate, punching section
It is vertical with concentric circular and vertical with column plate.
3. the water absorption tower of methane purification according to claim 2, it is characterised in that the aperture of the punching is 6-
20mm, hole centre-to-centre spacing is 2-3 times of aperture.
4. the water absorption tower of methane purification according to claim 2, it is characterised in that on undermost odd number column plate
The vertical column plate of down-flow plate install and down-flow plate lower end extends cylinder body bottom, the down-flow plate lower end edge on other odd number column plates is erected
Squareness to tower wall direction inclines 20 °.
5. the water absorption tower of the methane purification according to any one of claim 1-4, it is characterised in that also including silk screen
Demister, grate plate, upper manhole, lower manhole and sewage draining exit, are provided with wire mesh demister, upper people between gaseous phase outlet and fluid inlet
Below wire mesh demister, below gas phase import distributor, liquid-phase outlet bottom is provided with sewage draining exit to servant's hole position to hole position, combs
Daughter board is located between undermost odd number column plate and gas phase import distributor.
6. the water absorption tower of methane purification according to claim 5, it is characterised in that the cylinder one of grate plate bottom
Side is provided with two liquidometer root pipes one on the other, and liquidometer root pipe above is less than gas feed distributor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620968367.7U CN206103657U (en) | 2016-08-30 | 2016-08-30 | Washing absorption tower of marsh gas purification usefulness |
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| CN201620968367.7U CN206103657U (en) | 2016-08-30 | 2016-08-30 | Washing absorption tower of marsh gas purification usefulness |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106110841A (en) * | 2016-08-30 | 2016-11-16 | 贺少君 | A kind of water absorption tower of methane purification |
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2016
- 2016-08-30 CN CN201620968367.7U patent/CN206103657U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106110841A (en) * | 2016-08-30 | 2016-11-16 | 贺少君 | A kind of water absorption tower of methane purification |
| CN106110841B (en) * | 2016-08-30 | 2019-02-22 | 贺少君 | A kind of water absorption tower of methane purification |
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