CN203593734U - Mixer washing device and system for dusty gas - Google Patents
Mixer washing device and system for dusty gas Download PDFInfo
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- CN203593734U CN203593734U CN201320608849.8U CN201320608849U CN203593734U CN 203593734 U CN203593734 U CN 203593734U CN 201320608849 U CN201320608849 U CN 201320608849U CN 203593734 U CN203593734 U CN 203593734U
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- mixing tank
- washing device
- tank washing
- dusty gas
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Abstract
The utility model provides a mixer washing device and system for dusty gas. The mixer washing device comprises a synthesis gas pipe and a dust water pipe, wherein the water spray opening of the dust water pipe is communicated with the synthesis gas pipe; a sleeve is arranged in the synthesis gas pipe; the water spray opening of the dust water pipe is opposite to the air inlet of the sleeve; a swirler is arranged in a position, near the water spray opening, of the dust water pipe. As the swirler is arranged in the position, near the water spray opening, of the dust water pipe and used for primary atomization of washing water, and the contact areas of the small liquid drops and dust particles are enlarged after atomization, the dust particles can be coated fast, and the small liquid drops are spouted out fast. Therefore, the washing device realizes better particle separation and gas purification.
Description
Technical field
The utility model relates to coal chemical technology, particularly a kind of mixing tank washing device of dusty gas and mixing tank washing system.
Background technology
Coal gasification processes is using oxygen (air, oxygen enrichment or industrial pure oxygen), water vapour as vaporized chemical, by chemical reaction, the combustible portion in coal or coal tar is converted into the technological process of inflammable gas under High Temperature High Pressure.Owing to being gas-liquid-solid three-phase system in gasifying reactor, through carrying a large amount of fly ash granules in Quench or the cooled synthetic gas of radiation waste pot.Purification to synthetic gas and particle separation are the preconditions of the further deep processing of synthetic gas.
In the purification to synthetic gas and particle separation process, Venturi scrubber (claiming again venturi scrubber), as the synthetic gas tripping device of the functions such as integrated atomization, cohesion and demist, plays an important role in separation coal ash particle process.The patent of Granted publication CN200964404Y has been announced a kind of Venturi Type Synthetic Gas Scrubber 1.Understood incorporated by reference to Fig. 1, this synthesis gas washing device comprise supply bobbin 16 with tapered contraction section of a power water spouting nozzle 11, a synthetic gas receiving chamber 12,, a housing unit 14 and on corrosion-resistant overlay cladding 13 and hanging support 15 form.
There is following technical problem in existing Venturi Type Synthetic Gas Scrubber: the first, can not be applicable to the dedusting of ash coal gas, because in the occasion of maximization, ash coal gas, the Invariant and covariant of the flying dust carrying in synthetic gas is all very large, adopts existing Venturi scrubber to be difficult to realize good particle separation; The second, can not realize double atomization separates with low pressure drop.
Utility model content
The technical problems to be solved in the utility model is the defect that the mixing tank washing device in order to overcome Venturi-type dusty gas of the prior art is difficult to separate efficiently ash coal gas, and a kind of mixing tank washing device and mixing tank washing system of the dusty gas that can separate efficiently ash coal gas is provided.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of mixing tank washing device of dusty gas, comprise a syngas tube and a grey water pipe, the water jet of this ash water pipe and this syngas tube are interconnected, its feature is, in this syngas tube, be provided with a sleeve pipe, the water jet of this ash water pipe is relative with the inlet mouth of this sleeve pipe, and this water jet place of the neighbour of this ash water pipe is provided with a swirler.
Preferably, the diameter of this syngas tube is D, and the span of the diameter of this syngas tube is 300 millimeters to 800 millimeters, and this swirler is H3=0.1D～0.2D apart from the distance of the water jet of this ash water pipe.
Preferably, this swirler is H3=0.15D apart from the distance of the water jet of this ash water pipe.
Preferably, this sleeve pipe comprises the convergent portion, a larynx neck and the flaring portion that are connected successively along air flow line, the bore of this convergent portion reduces gradually along air flow line, and this larynx neck is hollow cylindrical, and the bore of this flaring portion increases gradually along air flow line.
Preferably, the diameter of this syngas tube is D, and the span of the diameter of this syngas tube is 300 millimeters to 800 millimeters, the water jet of this ash water pipe is H1=0.1D～0.2D apart from the length of this larynx neck, the length of this larynx neck is H2=0.1D～0.2D, the diameter of this larynx neck is D1=0.2D～0.5D, and the length of this flaring portion is H4=0.5D～4.2D.
Preferably, the venting port of this ash water pipe is H1=0.15D apart from the length of this larynx neck, and the length of this larynx neck is H2=0.15D, and the diameter of this larynx neck is D1=0.3D, and the length of this flaring portion is H4=2.5D.
Preferably, angle of throat α=20 of this convergent portion ° are to 60 °, and extended corner β=5 of this flaring portion are ° to 30 °.
Preferably, be provided with pressure acquisition interface on this syngas tube, this pressure acquisition interface is for being interconnected with a differential manometer.
A kind of mixing tank washing system, comprise a cyclonic separator and a water wash column, its feature is, this mixing tank washing system also comprises the mixing tank washing device of dusty gas as above, and mixing tank washing device, this cyclonic separator and this water wash column of this dusty gas are interconnected successively.
Positive progressive effect of the present utility model is: by this water jet place of the neighbour at this ash water pipe, a swirler is set, this swirler can be realized the first atomization to washing water, small droplets after atomization has increased the contact area with dust granule, can wrap up rapidly dust granule, and by small droplets ejection at a high speed, therefore the mixing tank washing device of this dusty gas has been realized good particle separation and gas sweetening.
Accompanying drawing explanation
Fig. 1 is the sectional view of existing synthesis gas washing device.
Fig. 2 is the sectional view of the mixing tank washing device of the dusty gas of the utility model preferred embodiment.
Fig. 3 is the enlarged view of the A portion of the mixing tank washing device of the dusty gas shown in Fig. 2.
Description of reference numerals:
The mixing tank washing device of existing Venturi-type dusty gas: 1
Power water spouting nozzle: 11 synthetic gas receiving chamber: 12
Corrosion-resistant overlay cladding: 13 housing units: 14
Hanging support: 15 supply bobbins: 16
The mixing tank washing device of dusty gas of the present utility model: 2
Syngas tube: 21 grey water pipes: 22
Swirler: 23 sleeve pipes: 24
Pressure acquisition interface: 25 convergent portions: 241
Larynx neck: 242 flaring portions: 243
Embodiment
Lift a preferred embodiment below, and carry out by reference to the accompanying drawings the clearer the utility model that intactly illustrates.
The structure of the mixing tank washing device of the dusty gas of the present embodiment is as follows:
Understood incorporated by reference to Fig. 2-3, the mixing tank washing device 2 of the dusty gas of the present embodiment, comprise a syngas tube 21 and a grey water pipe 22, the water jet of this ash water pipe 22 and this syngas tube 21 are interconnected, in this syngas tube 21, be provided with a sleeve pipe 24, the water jet of this ash water pipe 22 is relative with the inlet mouth of this sleeve pipe 24, and this water jet place of the neighbour of this ash water pipe 22 is provided with a swirler 23.The diameter of this syngas tube 21 is D, diameter is that D is of a size of 464 millimeters, when actual fabrication, according to the difference of vapourizing furnace operational load, diameter is that the size of D can be selected in the scope of 300 millimeters to 800 millimeters, this swirler 23 is H3=0.15D apart from the distance of the water jet of this ash water pipe 22, and when actual fabrication, H3 can select in the scope of 0.1D to 0.2D.
Understood incorporated by reference to Fig. 3, this sleeve pipe 24 comprises successively the convergent portion 241 being connected, larynx neck 242 and a flaring portion 243 along air flow line, the bore of this convergent portion 241 reduces gradually along air flow line, this larynx neck 242 is hollow cylindrical, and the bore of this flaring portion 243 increases gradually along air flow line.The water jet of this ash water pipe 22 is H1=0.15D apart from the length of this larynx neck 242, as required, H1 can select in the scope of 0.1D to 0.2D, and the length of this larynx neck 242 is H2=0.15D, and when actual fabrication, H2 can select in the scope of 0.1D to 0.2D, the diameter of this larynx neck 242 is D1=0.3D, when actual fabrication, D1 can select in the scope of 0.2D to 0.5D, and the length of this flaring portion 243 is H4=2.5D, as required, H4 can select in the scope of 0.5D to 4.2D.Angle of throat α=37 ° of this convergent portion 241, the numerical value of α can be selected in the scope of 20 ° to 60 ° certainly, extended corner β=10 ° of this flaring portion 243, as required, the numerical value of β can be selected in the scope of 5 ° to 30 °.On this syngas tube 21, be provided with pressure acquisition interface 25, this pressure acquisition interface 25 is for being interconnected with a differential manometer.
The principle of work of the mixing tank washing device of the dusty gas of the present embodiment is as follows:
Understood incorporated by reference to Fig. 2-3, when use, this syngas tube 21 passes into through Quench or the cooled synthetic gas of radiant boiler, this ash water pipe 22 passes into washing water, washing water change into small droplets through these swirler 23 swirling flow atomizings, and spray at a high speed through the water jet of this ash water pipe 22, atomizing droplet after ejection is continued to tear and is rotated in convergent portion 241, so that rapidly by the dust granule parcel in synthetic gas, be enclosed with the drop of dust granule after this larynx neck 242 converges and accelerates, outlet through this larynx neck 242 throws away, the thick liquid throwing away becomes under plume along the inner-wall surface of this flaring portion 243, drop and gas mixture throw away the mixing tank washing device 2 of dusty gas with the speed of 65 meter per second to 90 meter per seconds, carry out inertial separation through follow-up cyclonic separator.According to the flowing law of fluid, the diameter of this larynx neck 242 is less, and therefore the flow velocity of fluid is rapid, and the diameter of this larynx neck is D1=0.3D, and length H2=0.15D can realize fully catching of fly ash granule.In order to improve the capture rate of fly ash granule, the temperature of this buck is lower than the temperature of synthetic gas, and both at least need to differ 20 ℃ conventionally, and preferably, both differ 70 ℃.Buck enters swirler 23, buck is along passage (this passage and swirler bus are the angle of the 38 °) rotation of swirler, its speed is about 4.2m/s, wet synthetic gas accelerates to gradually 70m/s in the annular space of grey water pipe and convergent portion 241, after the buck after first atomization contacts with high warm and humid synthetic gas, in wet synthetic gas, part steam is cooled, there is the Condensation take dust granule as the nucleus of condensation, thereby realize part dust granule and transfer to liquid phase by gas phase, realize catching and separating of fly ash granule.
The high turbulence mixing process of wet synthetic gas and buck can realize the effect of following two aspects: impel on the one hand the tiny soot particle in liquid parcel synthetic gas, and in mutual collision, coalescence occurs; On the other hand, be actually the wherein vapor condenses on thin ash particle surface containing the condensation of wet synthetic gas, also the i.e. coring condensing process take fine particle as the nucleus of condensation.The generation of this process, more impels the thin ash particle in wet synthetic gas to catch, and grows up gradually, to be convenient to separation containing size after grey drop coalescence.
The mixing tank washing device of the dusty gas of the present embodiment there is following technique effect:
The first, double atomization separates, this swirler 23 can be realized the first atomization to washing water, small droplets after atomization has increased the contact area with dust granule, this convergent portion 241 and this larynx neck 242 can be realized secondary-atomizing, atomizing droplet after ejection is continued to tear and is rotated in convergent portion 241, to by the dust granule parcel in synthetic gas, be enclosed with the drop of dust granule after this larynx neck 242 converges and accelerates rapidly, throw away through the outlet of this larynx neck 242.
The second, low pressure drop high efficiency separation, in the gas mixture throwing away through the outlet of this larynx neck 242, comprise liquid, drop and the synthetic gas of three kinds of compositions, thickness, the liquid of thickness is thrown toward the inner-wall surface of this flaring portion 243 and becomes under plume, drop and synthetic gas form velocity contrast in this flaring portion 243, have realized low pressure drop high efficiency separation.
In order to test the performance of mixing tank washing device 2 of dusty gas, actual design the mixing tank washing device 2 of dusty gas of a few money different sizes, existing the performance of the mixing tank washing device 2 of a dusty gas is wherein analyzed.Table 1 has provided the mixing tank washing device 2 of dusty gas to the dust granule capture rate of different-grain diameter, wherein the diameter of this syngas tube 21 is D=464 millimeter, the water jet of this ash water pipe 22 is apart from the length H1=50 millimeter of this larynx neck 242, the length of this larynx neck 242 is H2=60 millimeter, the diameter D1=200 millimeter of this larynx neck 242, the length of this flaring portion 243 is H4=750 millimeter.Angle of throat α=37 ° of this convergent portion 241, extended corner β=10 ° of this flaring portion 243.
Table 1, dust granule capture rate
| Particle diameter <um | Separation efficiency % |
| 1.66 | 37.75 |
| 3.802 | 82.37 |
| 5.754 | 92.19 |
| 10 | 97.88 |
| 22.909 | 99.35 |
| 30.2 | 99.63 |
| 39.811 | 100 |
| 79.433 | 100 |
The structure of the mixing tank washing system of the present embodiment is as follows:
The present embodiment also provides a kind of mixing tank washing system, comprise a cyclonic separator and a water wash column, this mixing tank washing system also comprises the mixing tank washing device of dusty gas as above, and mixing tank washing device, this cyclonic separator and this water wash column of this dusty gas are interconnected successively.Concrete upper, this cyclonic separator and this water wash column can be the disclosed cyclonic separator of number of patent application ZL01112700.7 and water wash column.
Drop and gas mixture throw away after the mixing tank washing device 2 of dusty gas with the speed of 65 meter per second to 90 meter per seconds, then pass through separating and purification of cyclonic separator and water wash column, just can obtain high-purity synthetic gas.
In order to disclose implementation result of the present utility model, adopt the mixing tank washing device of the dusty gas shown in table 2, test:
The size table of the key parameter of the mixing tank washing device of table 2, dusty gas
| Parameter | Numerical value |
| Swirler exports length apart from washing pipe | 50mm |
| The small larynx neck length degree of secondary air flow atomization trunnion section | 60mm |
| The small larynx neck diameter of secondary air flow atomization trunnion section | 200mm |
| Small larynx neck exports length apart from washing pipe | 50mm |
| α | 37° |
| β | 10° |
In order to disclose implementation result of the present utility model, data gathering and contrast are carried out in the Heisui River solid flow to Heisui River, cyclonic separator bottom solid flow, water wash column and the pressure drop of conversion catalyst respectively, and test result as shown in Table 3 and Table 4.
Table 3, technical analysis table
| Parameter | Numerical value |
| Air-dried moisture Mar | 2.5%(wt) |
| Dry base fixed carbon Mar | 47.88%(wt) |
| Dry base volatile matter Var | 24.45%(wt) |
| Dry base ash content Aar | 27.67%(wt) |
Table 4, calorific value and ash fusion point table
| Parameter | Numerical value |
| Dry base net calorific value Qgr, d | 25.15kJ/kg |
| Yield temperature FT | 1480℃ |
By Heisui River, cyclonic separator bottom solid flow, water wash column Heisui River solid flow are carried out to collection analysis, calculate the separation efficiency of corresponding regional, wherein the particle after the separation of mixing tank and drop enter into cyclonic separator and separate, therefore can be by the separation efficiency of cyclonic separator is characterized to mixing tank separation efficiency.
Industrial implementation result shows, adopts this novel mixing tank washing device, and the particle separation rate that particle diameter is greater than 30um almost reaches 100%, and the particle separation rate that particle diameter is greater than 10um reaches 98%, and integral particle separation efficiency reaches 86%.
Although more than described embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present utility model and essence, can make various changes or modifications to these embodiments, but these changes and modification all fall into protection domain of the present utility model.
Claims (9)
1. the mixing tank washing device of a dusty gas, comprise a syngas tube and a grey water pipe, the water jet of this ash water pipe and this syngas tube are interconnected, it is characterized in that, in this syngas tube, be provided with a sleeve pipe, the water jet of this ash water pipe is relative with the inlet mouth of this sleeve pipe, and this water jet place of the neighbour of this ash water pipe is provided with a swirler.
2. the mixing tank washing device of dusty gas as claimed in claim 1, it is characterized in that, the diameter of this syngas tube is D, and the span of the diameter of this syngas tube is 300 millimeters to 800 millimeters, and this swirler is H3=0.1D～0.2D apart from the distance of the water jet of this ash water pipe.
3. the mixing tank washing device of dusty gas as claimed in claim 2, is characterized in that, this swirler is H3=0.15D apart from the distance of the water jet of this ash water pipe.
4. the mixing tank washing device of dusty gas as claimed in claim 1, it is characterized in that, this sleeve pipe comprises the convergent portion, a larynx neck and the flaring portion that are connected successively along air flow line, the bore of this convergent portion reduces gradually along air flow line, this larynx neck is hollow cylindrical, and the bore of this flaring portion increases gradually along air flow line.
5. the mixing tank washing device of dusty gas as claimed in claim 4, it is characterized in that, the diameter of this syngas tube is D, and the span of the diameter of this syngas tube is 300 millimeters to 800 millimeters, the water jet of this ash water pipe is H1=0.1D～0.2D apart from the length of this larynx neck, the length of this larynx neck is H2=0.1D～0.2D, and the diameter of this larynx neck is D1=0.2D～0.5D, and the length of this flaring portion is H4=0.5D～4.2D.
6. the mixing tank washing device of dusty gas as claimed in claim 5, it is characterized in that, the venting port of this ash water pipe is H1=0.15D apart from the length of this larynx neck, and the length of this larynx neck is H2=0.15D, the diameter of this larynx neck is D1=0.3D, and the length of this flaring portion is H4=2.5D.
7. the mixing tank washing device of dusty gas as claimed in claim 4, is characterized in that, angle of throat α=20 of this convergent portion ° are to 60 °, and extended corner β=5 of this flaring portion are ° to 30 °.
8. the mixing tank washing device of the dusty gas as described in any one in claim 4-7, is characterized in that, is provided with pressure acquisition interface on this syngas tube, and this pressure acquisition interface is for being interconnected with a differential manometer.
9. a mixing tank washing system, comprise a cyclonic separator and a water wash column, it is characterized in that, this mixing tank washing system also comprises the mixing tank washing device of the dusty gas described in any one in claim 1-8, and mixing tank washing device, this cyclonic separator and this water wash column of this dusty gas are interconnected successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608849.8U CN203593734U (en) | 2013-09-29 | 2013-09-29 | Mixer washing device and system for dusty gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608849.8U CN203593734U (en) | 2013-09-29 | 2013-09-29 | Mixer washing device and system for dusty gas |
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| Publication Number | Publication Date |
|---|---|
| CN203593734U true CN203593734U (en) | 2014-05-14 |
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| CN201320608849.8U Expired - Fee Related CN203593734U (en) | 2013-09-29 | 2013-09-29 | Mixer washing device and system for dusty gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103468324A (en) * | 2013-09-29 | 2013-12-25 | 华东理工大学 | Synthesis gas washer and synthesis gas washing system |
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2013
- 2013-09-29 CN CN201320608849.8U patent/CN203593734U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103468324A (en) * | 2013-09-29 | 2013-12-25 | 华东理工大学 | Synthesis gas washer and synthesis gas washing system |
| CN103468324B (en) * | 2013-09-29 | 2015-08-19 | 华东理工大学 | The blender wash mill of dusty gas and blender washing system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 |