CN205133531U - Washing tower structure - Google Patents
Washing tower structure Download PDFInfo
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- CN205133531U CN205133531U CN201520798263.1U CN201520798263U CN205133531U CN 205133531 U CN205133531 U CN 205133531U CN 201520798263 U CN201520798263 U CN 201520798263U CN 205133531 U CN205133531 U CN 205133531U
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Abstract
The utility model discloses a washing tower structure, upper portion is equipped with synthetic gas entry (2), washing water inlet (3), and the bottom is equipped with barrel (1) of slag bath (10), be equipped with downtake (5), tower tray (7) and silk screen demister (6) in the barrel to and arrange that downtake (5) upper portion is connected for structure of necking with the scrubbing tower barrel in the synthetic gas export (4) on barrel upper portion, contained angle alpha's scope is 60 <= alpha <= 120, synthetic gas export (4) sets up in the structure of necking below. Scrubbing tower after the improvement is in synthetic gas entrance spray cooling lime set, and the export synthetic gas is difficult to take water.
Description
Technical field
The utility model relates to a kind of structure of column scrubber.
Background technology
The effect of washing tower is removed in the mode of humidification by the thin ash carried secretly in raw gas, and separated by the water droplet in gas, and the synthetic gas of cleaning is delivered to transformation system.
At present, in coal gasifying process, modal washing tower is tray structure, and its principle of work is: washing tower is made up of the gas-solid, gas-liquid separation zone etc. of the bubbling area of hypomere, the washing section in stage casing and epimere.In the middle part of washing tower, washing tower is entered from the raw gas after Venturi scrubber washing, by center downtake and the center riser of washing tower hypomere, the gas-to-liquid contact forming hypomere is interval, coal gas rises from annular space, contact with the gasification ash water of washing tower bottom and mix, wet soot particle in this section of gas is deposited in the buck of bottom, coal gas continues to rise, enter the sieve-plate tower plate in the middle part of washing tower, being used for transformation into itself's process heat phlegma washs again by coal gas, the thin ash carried secretly in crude synthesis gas will dissolve in water, and gas is purified further.Coal gas after column plate washing rises to spiral board and the swash plate scum dredger of washing tower epimere, be used for ash content in divided gas flow and liquid water, gas after washing becomes clean synthetic gas substantially, delivers to follow-up conversion section, thus completes washing and cleaning action.
CN203530262 discloses a kind of washing separator of purification gasification stove crude synthesis gas, utilize the guide effect of spiral board that crude synthesis gas is rotated to rise, contact between the centrifugal force strengthening gas-liquid produced in gas uphill process, drop, tiny lime-ash are thrown on cylinder inboard wall, flow down along inwall afterwards, liquid can effectively utilize again centrifugal force and carry out gas-liquid separation after fully contacting with gas, avoids entrainment phenomenon.
CN204417443 discloses a kind of high efficiency composition carbon black washing tower of applicable ash coal gasification, change the internal structure of washing tower, add the components such as the upper and lower divider of synthetic gas and riser duct, make carbon black washing tower can meet gasification installation in the requirement using the safe and continuous in ash coal process to run.
At present, what the carbon black washing tower used in coal gasifying process all adopted is that simple tower tray washs, there will be washing effect to be deteriorated when using high-ash coal, the long-term operation of influential system, the crude synthesis gas dedusting effect going out vapourizing furnace is not good, and during normal operation, the efficiency of washing tower is difficult to reach design load exit gas ash content 1mg/Nm3.Enter subsequent conversion process system to prevent a large amount of dust add preposition useless pot in conversion battery limit (BL) or add strainer, required equipment is many, and water consumption is large, is therefore necessary to develop a kind of novel structure of column scrubber, improves washing tower detersive efficiency.
Utility model content
The purpose of this utility model is the shortcoming overcoming prior art, provides a kind of novel structure of column scrubber, and detersive efficiency is higher can stablize long-time running washing device more.
The technical solution of the utility model is: change the import mode of synthetic gas and partial condensation liquid washing water and order, increases phlegma spray reduce syngas outlet band water in synthetic gas ingress; Synthetic gas is subject to the spray of phlegma washing water after entering washing tower from top, the thin ash in synthetic gas obtains soaking fully and is conducive to improving detersive efficiency; Composition optimizes is carried out to washing tower, has extended gas-liquid contact time, therefore can suitably reduce washing tower height, reduced facility investment.
A kind of structure of column scrubber: comprise top and be provided with the cylindrical shell that synthetic gas entrance, washing water inlet and bottom are provided with slag bath, downtake, tower tray and wire mesh demister is provided with in described cylindrical shell, and be arranged in the syngas outlet on cylindrical shell top, downtake top and washing tower cylindrical shell are that throat structure is connected, and the scope of angle α is 60 °≤α≤120 °; Syngas outlet is arranged on below throat structure.
Preferably, described cylindrical shell is furnished with grey water inlet (8) and gray water outlet (9), synthetic gas entrance (2) is arranged on cylindrical shell top;
Preferably, described washing water inlet is arranged on washing tower cylindrical shell top, is evenly distributed, quantity >=2; The water yield entering washing tower from washing water inlet is always wash the 15%-40% of the water yield; Condensate line enters washing tower from washing water inlet, is β with the vertical flank angle of washing tower cylindrical shell, and the scope of angle β is 30 °≤β≤90 °, and condensate line end is coil-like arrangement; Phlegma coil pipe is provided with circular jetting water hole, spout hole number >=4, pore diameter range 1mm-100mm;
Preferably, the sectional area of described downtake straight length and ratio≤1/3 of washing tower sectional area, downtake lower end is immersed in slag bath (10) water, and gray water outlet (9) is also immersed in slag bath water.
Preferably, be provided with wire mesh demister and tower tray outside described downtake and between washing tower cylindrical shell annular space, wire mesh demister is arranged on the position closer to syngas outlet.
Mentality of designing of the present utility model: synthetic gas is from the raw gas going out vapourizing furnace, and portion of washing water is the phlegma from subsequent technique.Phlegma is from the ejection of coil pipe spout hole, and synthetic gas enters the spray that washing tower is subject to phlegma washing water from top, reunites, under synthesis air-flow and self gravitation effect, fall into slag bath along downtake after the thin ash in synthetic gas is fully wetting by washing water.Downtake and washing tower cylindrical shell top are that reducing is connected, synthetic gas is downwards through downtake, because the minimizing gas flow rate of gas passage sectional area can increase suddenly, air-flow at a high speed is more used in entrained gas water mixture and falls into slag bath, reduce floating in washing tower of fine particle, arrange downcomer structure is to extend the gas-liquid contact time of synthetic gas in washing tower simultaneously, makes washing more abundant.Air-water mixture is after the washing of water in slag bath, and rise with washing tower cylindrical shell annular space outside downtake, the increase of gas passage sectional area makes gas flow rate slow down.Now thin ash is subject to gas reactive force upwards and diminishes and contrary with thin grey gravity direction, and from slag bath water, air-flow is out unfavorable for carrying thin ash secretly, and after eventually passing through tower tray and wire mesh demister, the synthetic gas of cleaning enters subsequent processing from syngas outlet.Heisui River in slag bath enters usage on black water technique after Heisui River outlet and gray water outlet are discharged, and buck provides the liquid level in slag bath by import simultaneously, maintains the liquid level equilibrium in slag bath.
The utility model also has following beneficial effect:
1. change the import mode of partial condensation liquid washing water and order, relative to existing washing tower in the mode of adding phlegma washing close to syngas outlet place, washing tower after improvement is that exiting syngas is not easy to be with water at synthetic gas ingress spray phlegma.
2. compared with prior art, change the structure of washing tower, washing water spray from coil pipe spout hole, synthetic gas is subject to the spray of washing water after entering washing tower from top, thin ash in synthetic gas is fully wetting by washing water, extend gas-liquid contact time simultaneously, therefore can suitably reduce washing tower height, reduce facility investment.
3. be provided with reducing downcomer structure, synthetic gas experiences repeatedly speed change in washing tower, and the continuous change that the thin ash in air-flow is subject to reactive force easily comes off separation, further increases washing tower efficiency of dust collection.
4. novel structure of column scrubber, improves detersive efficiency and can save washing phlegma water consumption simultaneously, can be the Reduction of Students' Study Load of follow-up grey water handing technique.
Accompanying drawing explanation
A kind of structure of column scrubber figure that Fig. 1 provides for the utility model;
A kind of washing tower phlegma coil arrangement schematic diagram that Fig. 2 provides for the utility model.
Description of reference numerals:
1, washing tower cylindrical shell; 2, synthetic gas entrance; 3, washing water inlet; 4, syngas outlet; 5, downtake; 6, wire mesh demister; 7, tower tray; 8, grey water inlet; 9, gray water outlet; 10, slag bath; 11, Heisui River outlet; 12, condensate line; 13, spout hole.
Embodiment
For making the utility model become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Embodiment
As shown in Figure 1, for the novel structure of column scrubber schematic diagram of one that the utility model provides, comprise top and be provided with the cylindrical shell 1 being provided with slag bath 10 bottom synthetic gas import 2, washing water inlet 3, device, be provided with downtake 5, tower tray 7 and wire mesh demister 6 in described cylindrical shell, and be arranged in syngas outlet on cylindrical shell 4 and grey water inlet 8 and gray water outlet 9.Described washing water inlet 3 is arranged on washing tower cylindrical shell top, is evenly distributed, and washing water spray from phlegma coil pipe end circular jetting water hole.Described downtake 4 connects washing tower cylindrical shell top and slag bath, and downtake lower end is immersed in slag bath.Described wire mesh demister 6 and tower tray 7 are arranged between downtake and washing tower cylindrical shell annular space.
Synthetic gas is from the raw gas going out vapourizing furnace, washing water are the phlegmas from subsequent technique, washing water spray from coil pipe 12 through spout hole 13, synthetic gas enters from top synthetic gas entrance 2 spray that washing tower is subject to washing water, and occurring to reunite after the thin ash in synthetic gas is fully wetting by washing water declines.Synthetic gas by washing tower upper space through downtake 5 interior passageway, the change of reducing section sectional area makes gas flow rate increase suddenly, and the thin ash in synthetic gas and phlegma mist carry reactive force and self gravitation downwards secretly impact at air-flow falls into slag bath 10 along downtake 5.Air-water mixture, after the washing of water in slag bath, rises with shell annular space outside downtake, and enters next technological process arrive syngas outlet 4 after tower tray 7 with wire mesh demister 6 after.Heisui River in slag bath enters usage on black water technique after Heisui River outlet 11 and gray water outlet 9 are discharged, and grey water inlet 8 supplements the liquid level in slag bath 10 simultaneously, maintains the liquid level equilibrium in slag bath 10.
Example 1
Take coal as the day output of raw material be the coal water slurry gasifying device of 1000 tons be example, vapor pressure is 4.0MPa, and gasification temperature is 1350 DEG C, and dry gas productive rate amount is 54000m3/h.The condensing liquid quantity entering washing tower from washing water inlet is 15000kg/h, is about 20% of washing tower flooding quantity, and the grey water yield entering washing tower is 60000kg/h.Synthetic gas enters from top synthetic gas entrance 2 spray that washing tower is subject to washing water, and occurring to reunite after the thin ash in synthetic gas is fully wetting by washing water declines.Downtake 5 aisle spare is 1/5 of washing tower sectional area, synthetic gas by washing tower upper space through downtake interior passageway, the change of reducing section sectional area makes gas flow rate increase by 500 suddenly, and the thin ash in synthetic gas and phlegma mist carry reactive force and self gravitation downwards secretly impact at air-flow falls into slag bath 10 along downtake 5.Experience washing again in slag bath 10 after, synthetic gas leaves the slag bath water surface, and through column plate 7 pore and wire mesh demister 6, the synthetic gas dustiness < 0.5mg/Nm3 after cleaning, enters next technological process from syngas outlet 4.Heisui River in slag bath enters usage on black water technique after Heisui River outlet 11 and gray water outlet 9 are discharged, and grey water inlet 8 supplements the liquid level in slag bath 10 simultaneously, maintains the liquid level equilibrium in slag bath 10.
As can be seen here, the utility model, owing to changing the feeding manner of synthetic gas and portion of washing water, can save water of condensation 15%-30% to follow-up usage on black water technique Reduction of Students' Study Load; Change the structure of washing tower, more effectively improve detersive efficiency, steady in a long-termly can run, there is obvious technological innovation advantage.
Claims (6)
1. a structure of column scrubber, it is characterized in that: top is provided with synthetic gas entrance (2), washing water inlet (3), bottom is provided with the cylindrical shell (1) of slag bath (10), downtake (5), tower tray (7) and wire mesh demister (6) is provided with in described cylindrical shell, and be arranged in the syngas outlet (4) on cylindrical shell top, downtake (5) top and washing tower cylindrical shell are that throat structure is connected, and the scope of angle α is 60 °≤α≤120 °; Syngas outlet (4) is arranged on below throat structure.
2. a kind of structure of column scrubber as claimed in claim 1, it is characterized in that on cylindrical shell, be furnished with grey water inlet (8) and gray water outlet (9), synthetic gas entrance (2) is arranged on cylindrical shell top.
3. a kind of structure of column scrubber as claimed in claim 2, is characterized in that: washing water inlet (3) are arranged on washing tower cylindrical shell top, are evenly distributed, quantity >=2; The water yield entering washing tower from washing water inlet (3) is always wash the 15%-40% of the water yield.
4. a kind of structure of column scrubber as claimed in claim 3, it is characterized in that condensate line (12) enters washing tower from washing water inlet (3), be β with the vertical flank angle of washing tower cylindrical shell, the scope of angle β is 30 °≤β≤90 °, and condensate line end is coil-like arrangement; Phlegma coil pipe is provided with circular jetting water hole, spout hole number >=4, pore diameter range 1mm-100mm.
5. a kind of structure of column scrubber as claimed in claim 4, is characterized in that: the sectional area of downtake straight length and ratio≤1/3 of washing tower sectional area, downtake lower end is immersed in slag bath (10) water, and gray water outlet (9) is also immersed in slag bath water.
6. a kind of structure of column scrubber as claimed in claim 5, it is characterized in that being provided with wire mesh demister (6) and tower tray (7) between downtake (5) outside and washing tower cylindrical shell (1) annular space, wire mesh demister is arranged on the position closer to syngas outlet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520798263.1U CN205133531U (en) | 2015-10-15 | 2015-10-15 | Washing tower structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520798263.1U CN205133531U (en) | 2015-10-15 | 2015-10-15 | Washing tower structure |
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| CN205133531U true CN205133531U (en) | 2016-04-06 |
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| CN201520798263.1U Active CN205133531U (en) | 2015-10-15 | 2015-10-15 | Washing tower structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176600A (en) * | 2015-10-15 | 2015-12-23 | 上海锅炉厂有限公司 | Washing tower structure |
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- 2015-10-15 CN CN201520798263.1U patent/CN205133531U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176600A (en) * | 2015-10-15 | 2015-12-23 | 上海锅炉厂有限公司 | Washing tower structure |
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