CN104815769A - Hydraulic jet air cyclone - Google Patents
Hydraulic jet air cyclone Download PDFInfo
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- CN104815769A CN104815769A CN201410790154.5A CN201410790154A CN104815769A CN 104815769 A CN104815769 A CN 104815769A CN 201410790154 A CN201410790154 A CN 201410790154A CN 104815769 A CN104815769 A CN 104815769A
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- cyclone
- cylindrical shell
- spray orifice
- hydraulic jetting
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Abstract
The invention discloses a hydraulic jet air cyclone. The hydraulic jet air cyclone comprises an air cyclone and a hydraulic jet atomizing chamber, wherein the air cyclone is formed by coating a center exhaust pipe with a cyclone cylinder; the upper end of the center exhaust pipe extends outside the cyclone cylinder, and the lower end is lower than the lower end of the hydraulic jet atomizing chamber; a cyclone port is formed in the cyclone cylinder; a cylindrical outer jacket is arranged at the periphery of the upper part of the cyclone cylinder, and is connected with the outer wall of the cyclone cylinder to form the hydraulic jet atomizing chamber; multiple spraying holes are formed in the outer wall of the connected cyclone cylinder from top to bottom; a liquid inlet is formed in the upper part of the hydraulic jet atomizing chamber; a diameter Dx of the center exhaust pipe is 0.5-0.6 d mm; an insertion depth S of the center exhaust pipe is 0.5-0.75H mm; the multiple spraying holes are arranged on the outer wall of the cylindrical cylinder in a square array form; and a length h of the spraying hole area is 0.6-1S mm. The hydraulic jet air cyclone can realize high-efficiency mass transfer of gas and liquid.
Description
Technical field
The invention belongs to technical field of chemical engineering, be specifically related to a kind of hydraulic jetting air cyclone device.
Background technology
Traditional gas-liquid mass transfer (contact) equipment is packed tower, plate column and spray column etc. mainly, and liquid phase flows from top to bottom under the effect of gravitational field, and gas phase flows from bottom to top, and both on the surface such as filler or column plate, gas-liquid mass transfer effect occur.But because gravitational field is more weak, the flow velocity of liquid film is lower, thickness is comparatively large, and film mass transfer efficiency is low, and vapour lock is also higher, this makes, and equipment volume is huge, material consumption is many, it is high to invest, operating cost is also high.
A kind of hydraulic jetting air cyclone separator disclosed in Chinese patent literature CN 101147894 B, its mainly comprise outside main cylinder 7 and on spray orifice 2, waste water chuck, water-jet spray chamber 6, central row tracheae 4, air intake duct 3, feed tube 5 and waste water discharge opening 8.This patent is the novel mass transfer apparatus utilizing liquid jet and gas cyclone hypergravity coupled field strengthening gas-liquid mass transport process, has the advantages such as device structure is simple, mass-transfer efficiency is high, waste water adaptation is wide, specific air consumption is less.COD, ammonia nitrogen and total phosphorus is removed, flue gas desulfurization and SO while being successfully applied to the process of ammonia nitrogen waste water, piggery wastewater
2the aspects such as reduction treatment Cr VI, and achieve good effect.But still there is irrational place in the design of above each parts, needs to make improvements.
Summary of the invention
The object of this invention is to provide a kind of hydraulic jetting air cyclone device that can realize gas liquid high-efficiency mass transfer.
Hydraulic jetting air cyclone device of the present invention, comprise air cyclone and water-jet spray chamber, air cyclone is set with by central row tracheae and cyclone cylindrical shell and forms, the upper end of central row tracheae stretches out in outside cyclone cylindrical shell, lower end position is lower than the lower end of water-jet spray chamber, cyclone cylindrical shell is provided with eddy flow mouth, in cyclone cylindrical shell, Compressed Gas is inputted by eddy flow mouth, Compressed Gas is High Rotation Speed in cyclone cylindrical shell, form gas cyclone field, the outer of cyclone cylindrical shell upper part is with a cylindric external jacket, water-jet spray chamber is connected and composed with cyclone cylinder body outer wall, the outer wall of this part coupled cyclone cylindrical shell has multiple spray orifice from top to bottom, the top of water-jet spray chamber is provided with inlet, the diameter D of described central row tracheae
xfor 0.5d ~ 0.6d mm, the insertion depth S of central row tracheae is 0.5H ~ 0.75H mm, multiple spray orifice is that quadrate array is arranged on the outer wall of cylindrical section cylindrical shell, and spray orifice zone length h is 0.6S ~ 1S mm.
Described spray orifice is circular hole, its diameter d
hfor 0.028d ~ 0.05d mm, the spacing l between spray orifice and spray orifice
hfor 0.15d ~ 0.30d mm.
Described eddy flow mouth is arranged in the top of cylindrical section cylindrical shell, and the oral area of eddy flow mouth is rectangle, and its length b is 0.4d ~ 0.5d mm, and width a is 0.2d ~ 0.3d mm.
The conical section cylindrical shell that described cyclone cylindrical shell is reduced to be formed by cylindrical section cylindrical shell and the lower inner diameter on top gradually forms; The internal diameter D of described cylindrical section cylindrical shell is d mm; The total length H of described cyclone cylindrical shell is 4d ~ 5d mm; The length H of described conical section cylindrical shell
cfor 2d ~ 2.5d mm.
The lower end of described conical section cylindrical shell has underflow opening, the diameter D of this underflow opening
dfor 0.3d ~ 0.5d mm, at underflow opening, place is provided with valve.
Gap l between described central row tracheae and cylindrical section cylindrical shell
0be 0.2 ~ 0.25d mm.
The internal diameter D of described cylindric external jacket
0for d+40 ~ d+60mm.
The present invention has the following advantages:
(1) by the diameter of appropriate design central row tracheae, insertion depth and spray orifice zone length, compared with prior art, the present invention has the highest efficiency, and namely unit pressure drop ammonia removal efficiency is higher;
(2) spray orifice is designed to circle, its arrangement mode is designed to square.Discharge mode relative to other, foursquare arrangement mode is conducive to improving the probability that rotational flow gas and liquid phase jet column collide, are atomized, and gas-liquid effect more acutely, makes cyclone have higher gas-liquid mass transfer efficiency;
(3) separated space of cyclone is designed to post cone mating type, because post cone mating type cyclone cyclonic separation space narrows, cyclone gas tangential speed increases, and gas-liquid coupling strengthens, and mass-transfer efficiency becomes higher; Reasonably design the internal diameter of cylindrical section cylindrical shell and conical section cylindrical shell and length, compared with existing cylindricality cyclone, separated space is that the cyclone of post cone mating type has higher gas-liquid mass transfer efficiency simultaneously;
(4) by rationally establishing diameter and the spacing between spray orifice and spray orifice of spray orifice, cyclone is made to have higher gas-liquid mass transfer efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present invention;
Fig. 3 is top view of the present invention;
Fig. 4 is the layout viewing of spray orifice in Fig. 1;
Fig. 5 is the deamination mass-transfer efficiency comparison diagram of post cone mating type (a) and cylindricality (b) two kinds of cyclones;
The comparison diagram that centered by Fig. 6, air slit diameter (a) and insertion depth (b) affect hydraulic jetting air cyclone device deamination unit pressure drop mass-transfer efficiency;
Fig. 7 is the comparison diagram that spray orifice arrangement mode affects hydraulic jetting air cyclone device deamination mass-transfer efficiency;
Fig. 8 is the comparison diagram that nozzle spacing affects hydraulic jetting air cyclone device deamination mass-transfer efficiency;
Fig. 9 is the comparison diagram that injection diameter affects cyclone deamination mass-transfer efficiency;
Figure 10 is the connection diagram of hydraulic jetting air cyclone device structure and experimental provision;
Figure 11 is that the present invention is for changing schematic diagram containing hexavalent chrome reduction clearance after Cr (VI) wastewater treatment;
Figure 12 is the structural representation of another embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
Embodiment one
Hydraulic jetting air cyclone device as shown in Figures 2 and 3, comprise air cyclone and water-jet spray chamber 6, air cyclone is set with by central row tracheae 4 and cyclone cylindrical shell 1 and forms, the upper end of central row tracheae 4 stretches out in outside cyclone cylindrical shell 1, lower end position is lower than the lower end of water-jet spray chamber 6, cyclone cylindrical shell 1 is provided with eddy flow mouth 11, in cyclone cylindrical shell 1, Compressed Gas is inputted by eddy flow mouth 11, Compressed Gas is High Rotation Speed in cyclone cylindrical shell 1, form gas cyclone field, the outer of cyclone cylindrical shell 1 upper part is with a cylindric external jacket 9, water-jet spray chamber 6 is connected and composed with the outer wall of cyclone cylindrical shell 1, the outer wall of this part coupled cyclone cylindrical shell 1 has multiple spray orifice 2 from top to bottom, water-jet spray chamber 6 top is provided with inlet 10.
As shown in Figure 2, the conical section cylindrical shell 1b that described cyclone cylindrical shell 1 is reduced to be formed by cylindrical section cylindrical shell 1a and internal diameter gradually forms, and the internal diameter D of cylindrical section cylindrical shell 1a is d mm.The total length H of cyclone cylindrical shell 1 is 4d ~ 5d mm.The length H of conical section cylindrical shell 1b
cfor 2d ~ 2.5d mm.Fig. 5 is the comparison diagram of the deamination mass-transfer efficiency of post cone mating type (a) and cylindricality (b) two kinds of cyclones, can show that from this comparison diagram when the separated space of cyclone being designed to post cone mating type, cyclone has better gas-liquid mass transfer efficiency.
As shown in Figure 2, the internal diameter D of cylindric external jacket 9
0for d+40 ~ d+60mm.Eddy flow mouth 11 is arranged in the top of cylindrical section cylindrical shell 1a, and the oral area of eddy flow mouth 11 is rectangle, and its length b is 0.4d ~ 0.5d mm, and width a is 0.2d ~ 0.3d mm.The lower end of conical section cylindrical shell 1b has underflow opening 12, the diameter D of this underflow opening 12
dfor 0.3d ~ 0.5d mm, at underflow opening 12, place is provided with valve.
As shown in Figure 2, the diameter D of central row tracheae 4
xfor 0.5d ~ 0.6d mm.The comparison diagram that centered by (a) of Fig. 6, air slit diameter affects hydraulic jetting air cyclone device deamination unit pressure drop mass transfer effect, can draw, by the diameter D of central row tracheae 4 from this comparison diagram
xwhen being designed to 0.5d ~ 0.6d mm, hydraulic jetting air cyclone utensil has best efficiency, and namely unit pressure drop ammonia removal efficiency is the highest.
As described in Figure 2, the insertion depth S of central row tracheae is 0.5H ~ 0.75H mm, and spray orifice zone length h is 0.6S ~ 1S mm.As shown in (b) in Fig. 6, centered by blast pipe insertion depth comparison diagram that hydraulic jetting air cyclone device deamination unit pressure drop mass transfer effect is affected, can draw from this comparison diagram, when the insertion depth S of central row tracheae 4 is designed to 0.5H ~ 0.75H mm, hydraulic jetting air cyclone utensil has best efficiency.
As shown in Figure 2, multiple spray orifice 2 is all located on the outer wall of cylindrical section cylindrical shell 1a, its arrangement mode is designed to square, the comparison diagram that Fig. 7 is spray orifice arrangement triangular in shape and affects cyclone deamination mass transfer effect in square arrangement, can draw from this comparison diagram, when arrangement mode is designed to square, hydraulic jetting air cyclone utensil has better gas-liquid mass transfer efficiency.
As shown in Figure 2, the line space design between described spray orifice 2 and spray orifice 2 is l
hfor 0.15d ~ 0.30d mm.Fig. 8 is the comparison diagram that different nozzle spacing affects cyclone deamination mass transfer effect, can draw, by the spacing l of spray orifice from this comparison diagram
hwhen being designed to 0.15d ~ 0.30d mm, hydraulic jetting air cyclone utensil has better gas-liquid mass transfer efficiency.
As shown in Figure 4, described spray orifice is circular, its diameter d
hfor 0.028d ~ 0.05d mm.Diameter d
hcomputational process as follows, injection diameter d
hbest value be 0.14l
0~ 0.20l
0, l
0centered by gap (i.e. the annular space width of cyclone) between blast pipe 4 and cylindrical section cylindrical shell 1a, l
0=0.5 (D-D
x)=0.2 ~ 0.25d mm, namely draws d
hbe 0.028 ~ 0.05d mm.Fig. 9 is the comparison diagram that injection diameter affects cyclone deamination mass transfer effect, can draw, by the diameter d of spray orifice from this comparison diagram
hwhen being designed to 0.028d ~ 0.05d mm, hydraulic jetting air cyclone utensil has better gas-liquid mass transfer efficiency.
Below illustrate that the internal diameter D of cylindrical section cylindrical shell is the design and fabrication of the hydraulic jetting air cyclone device of 70mm and is applied to the method for reduction treatment of chromate waste water.
(1) making of cyclone:
Choose the cyclone cylindrical shell of the lucite tube making cyclone that sheet metal thickness is 5mm, internal diameter D is 70mm.Cyclone cylindrical shell overall length H should in 280 ~ 350mm, the present embodiment value 300mm, and separated space is designed to cone post mating type, the length H of conical section cylindrical shell
cget 150mm, the internal diameter D of cylindric external jacket 9
0be 110 ~ 130mm, the diameter D of underflow opening 12
dbe 21 ~ 35mm, underflow opening is provided with valve 12 times, and eddy flow mouth 11 adopts conventional cyclones spiral rectangle import end socket, and the length b of eddy flow mouth 1 is 28 ~ 35mm, and width a is 14 ~ 21mm, and end socket is connected by ring flange with cyclone cylindrical shell.The diameter D of central row tracheae
xbe designed to 40mm, it inserts length S in cyclone cylindrical shell and is designed to 140mm.Nozzle spacing l
hshould design in 10.5 ~ 21mm, the present embodiment value 15.7mm, spray orifice takes square arrangement, so cyclone cylindrical shell has from top to bottom 7 row spray orifices, often row totally 16 spray orifices, add up to 112, and often 16 spray orifices of row are circumferentially uniform, spray orifice zone length h should in 84 ~ 140mm, the present embodiment value 100mm.Injection diameter gets d
h=0.029d ≈ 2mm.Experimental system is made up of the gas, flow meters, U-shaped differential manometer etc. that cyclone, liquid storage vessel, liquid circulation pump, blower fan, sieve-board type gas-liquid separator and system testing are supporting, as shown in Figure 10.
(2) experimentation:
First use K
2cr
2o
7the certain initial concentration chromate waste water of preparation 5L, pours in the hopper of cyclone.ON cycle liquid pump, gets initial sample after stablizing 10min.And then open air pump and SO
2steel cylinder gas valve, adjust flux, to preset value, starts chromate waste water reduction treatment.Regulate the valve at cyclone underflow opening place, and keep bottom cyclone, there is same liquid level in experiment, to realize fluid-tight, ensure that rotational flow gas is discharged by central row tracheae.In experimentation every 0.5 ~ 2min sampling once, analyze and measure Cr (VI) changes of contents.In sample, Cr (VI) concentration adopts diphenyl carbazide spectrophotometry at the colorimetric estimation of 540nm place (GB 7467-87), and Cr (VI) clearance is defined as:
In formula, c
0and c
trefer to the concentration of the initial and t of Cr (VI) respectively.
When Cr VI is all reduced to Cr
3+, the pH of chromate waste water is adjusted to 8-9, Cr
3+will precipitate, recoverable after separating and dehydrating.
(3) experiment effect:
As shown in figure 11, adopt hydraulic jetting air cyclone device with SO
2for reducing agent, the efficiency of processing waste water containing chrome is very good.When Cr (VI) concentration is only 204mgL
-1time, process 2min, Cr (VI) reduction clearance can reach more than 99.9%.This shows the chromate waste water of lower Cr (VI) concentration present treatment technique preferably.Along with Cr in waste water (VI) concentration is by 204mgL
-1increase to 1982mgL
-1, the processing time needs proper extension, but even if Cr (VI) concentration reaches 1982mgL
-1, process 14min, Cr (VI) reduction clearance also can reach more than 99.9%.Chromate waste water after reduction, pH is adjusted to 8.5, the Cr be converted into
3+can precipitate, recoverable after being separated.
Embodiment two
Hydraulic jetting air cyclone device as shown in figure 12, described cyclone cylindrical shell 1 also can adopt cylinder cylindrical shell.All the other are identical with embodiment one.
Claims (7)
1. a hydraulic jetting air cyclone device, comprise air cyclone and water-jet spray chamber (6), air cyclone is set with by central row tracheae (4) and cyclone cylindrical shell (1) and forms, the upper end of central row tracheae (4) stretches out in cyclone cylindrical shell (1) outward, lower end position is lower than the lower end of water-jet spray chamber (6), cyclone cylindrical shell (1) is provided with eddy flow mouth (11), by eddy flow mouth (11) input Compressed Gas in cyclone cylindrical shell (1), Compressed Gas is High Rotation Speed in cyclone cylindrical shell (1), form gas cyclone field, the outer of cyclone cylindrical shell (1) upper part is with a cylindric external jacket (9), water-jet spray chamber (6) is connected and composed with the outer wall of cyclone cylindrical shell (1), the outer wall of this part coupled cyclone cylindrical shell (1) has multiple spray orifice (2) from top to bottom, the top of water-jet spray chamber (6) is provided with inlet (10), it is characterized in that: the diameter D of described central row tracheae (4)
xbe 0.5 d ~ 0.6d mm, the insertion depth S of central row tracheae (4) is 0.5H ~ 0.75 H mm, multiple spray orifice (2) is arranged on the outer wall of cylindrical section cylindrical shell (1a) in quadrate array, and spray orifice zone length h is 0.6S ~ 1S mm.
2. hydraulic jetting air cyclone device according to claim 1, is characterized in that: described spray orifice (2) is circular hole, its diameter d
hbe 0.028 d ~ 0.05 d mm, the spacing l between spray orifice (2) and spray orifice (2)
hbe 0.15 d ~ 0.30d mm.
3. hydraulic jetting air cyclone device according to claim 1 and 2, it is characterized in that: described eddy flow mouth (11) is arranged in the top of cylindrical section cylindrical shell (1a), and the oral area of eddy flow mouth (11) is rectangle, its length b is 0.4 d ~ 0.5d mm, width a is 0.2 d ~ 0.3d mm.
4. hydraulic jetting air cyclone device according to claim 1 and 2, is characterized in that: the conical section cylindrical shell (1b) that described cyclone cylindrical shell (1) is reduced to be formed by cylindrical section cylindrical shell (1a) and the lower inner diameter on top gradually forms; The internal diameter D of described cylindrical section cylindrical shell (1a) is d mm; The total length H of described cyclone cylindrical shell (1) is 4d ~ 5d mm; The length H of described conical section cylindrical shell (1b)
cbe 2 d ~ 2.5d mm.
5. hydraulic jetting air cyclone device according to claim 1 and 2, is characterized in that: the lower end of described conical section cylindrical shell (1b) has underflow opening (12), the diameter D of this underflow opening (12)
dfor 0.3d ~ 0.5d mm, be provided with valve at underflow opening (12) place.
6. hydraulic jetting air cyclone device according to claim 1 and 2, is characterized in that: the gap l between described central row tracheae (4) and cylindrical section cylindrical shell (1a)
0for 0.2d ~ 0.25 d mm.
7. hydraulic jetting air cyclone device according to claim 1 and 2, is characterized in that: the internal diameter D of described cylindric external jacket (9)
0for d+40 ~ d+60 mm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106047424A (en) * | 2016-06-30 | 2016-10-26 | 华东理工大学 | Coke oven gas hydrogen sulfide gas recovery method and device |
| CN106731444A (en) * | 2016-06-30 | 2017-05-31 | 华东理工大学 | A kind of coking plant low pressure loss gas recovery and treatment method and device |
| CN107199128A (en) * | 2017-05-09 | 2017-09-26 | 李尽善 | A kind of lateral feed type cyclone |
| CN109909078A (en) * | 2019-01-21 | 2019-06-21 | 西安交通大学 | A kind of design method of cyclone type oil-gas separator cylinder size |
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Cited By (10)
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|---|---|---|---|---|
| CN106047424A (en) * | 2016-06-30 | 2016-10-26 | 华东理工大学 | Coke oven gas hydrogen sulfide gas recovery method and device |
| CN106731444A (en) * | 2016-06-30 | 2017-05-31 | 华东理工大学 | A kind of coking plant low pressure loss gas recovery and treatment method and device |
| CN106731616A (en) * | 2016-06-30 | 2017-05-31 | 洛阳涧光特种装备股份有限公司 | A kind of industrial low pressure loss gas absorbing device and its absorption process |
| CN106731482A (en) * | 2016-06-30 | 2017-05-31 | 华东理工大学 | A kind of industrial blast-furnace gas hydrogen chloride Gas recovering method and device |
| WO2018137691A1 (en) * | 2016-06-30 | 2018-08-02 | 华东理工大学 | Absorption device for low-pressure industrial fugitive emission gas and absorption method therefor |
| CN106047424B (en) * | 2016-06-30 | 2021-12-10 | 华东理工大学 | Coke oven gas hydrogen sulfide gas recovery method and device |
| CN106731444B (en) * | 2016-06-30 | 2023-09-19 | 华东理工大学 | Method and device for recycling and treating low-pressure dissipation gas of coking device |
| CN107199128A (en) * | 2017-05-09 | 2017-09-26 | 李尽善 | A kind of lateral feed type cyclone |
| CN109909078A (en) * | 2019-01-21 | 2019-06-21 | 西安交通大学 | A kind of design method of cyclone type oil-gas separator cylinder size |
| CN109909078B (en) * | 2019-01-21 | 2020-03-17 | 西安交通大学 | Design method for size of cylinder of cyclone oil-gas separator |
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Application publication date: 20150805 |
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