CN201658933U - Pneumatic atomizing absorption device - Google Patents
Pneumatic atomizing absorption device Download PDFInfo
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- CN201658933U CN201658933U CN2010201553536U CN201020155353U CN201658933U CN 201658933 U CN201658933 U CN 201658933U CN 2010201553536 U CN2010201553536 U CN 2010201553536U CN 201020155353 U CN201020155353 U CN 201020155353U CN 201658933 U CN201658933 U CN 201658933U
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Abstract
The utility model provides a pneumatic atomizing absorption device, which belongs to the field of resource and environment devices, and comprises an absorption device, a gas ejector pipe, a liquid spray pipe and a buffer tank, wherein the absorption device is 1.2 m long, has a smaller upper part and a larger lower part, and is provided with a defogger, a gas ejector port, a liquid spray hole, an imbibition hole, an air outlet, a thermowell and a sampling port; the gas ejector pipe/liquid spray pipe is composed of sharp pipes with different air blast apertures and lengths, and is connected with the air blast port of the absorption device via the silica gel plug gas ejector pipe and connected with the liquid spray hole and the imbibition hole via a silica gel plug and a pipe; and the height of the buffer tank is 70 cm, the inside diameter is 24 cm, and the buffer tank presents the shape of a cylinder. The utility model is designed to solve the problem of NOx absorption and regeneration in the process of cyclic catalytic oxidation of high-sulfur and high-arsenic refractory metallurgical ores or cyanation of tailings in a three-phase fluidized bed, and requires no extra power equipment to be purchased by virtue of the original air compressor of the process, thereby saving cost for the process performance and increasing the benefits.
Description
Technical field
The utility model belongs to resource environment device field, particularly relates to a kind of pneumatic nebulization absorption plant.
Background technology
China's gold ore resource is abundant, gravel mine, lode gold ore deposit is arranged, contain the polymetallic ore of Au.Wherein the lode gold reserves are more than gold placer reserves, are the main resources that gold is produced.In the lode gold ore deposit, low-grade particularly abundant with the gold ore resource that contains complicated sulfide, and gold grade is higher, and the high pozzuolite Gold Concentrate under Normal Pressure of China's output accounts for 1/3 of the total Gold Concentrate under Normal Pressure in the whole nation according to statistics.But with conventional gold extracting method, high-sulphur and high-arsenic gold concentrate put forward golden rate less than 50%, select the smelting problem in order to solve the high-sulphur and high-arsenic gold concentrate difficulty, this seminar utility model a kind of in three phase fluidized bed circulation catalytic oxidation high-sulfur high-arsenic difficult separation concentrate or cyanidation tailings technology, can make and put forward golden rate and reach more than 90%.
Circulation catalytic oxidation high-sulfur high-arsenic difficult separation concentrate or cyanidation tailings technology mainly comprise three parts in three phase fluidized bed: the regenerative system of seeking a kind of oxidant capable of circulation, design one cover reaction system, design one cover oxidant.Through the member of seminar years of researches, successfully designed a cover reaction system, and finally chosen with HNO
3As the cyclic oxidation agent, therefore realize HNO
3Regeneration just seem most important.
HNO
3Regeneration mainly be directly to feed by spray column, packed tower, plate column or with NOx gas to realize regeneration in the water at present, take all factors into consideration the reaction condition and the cost of technology, above-mentioned HNO
3Renovation process can not finely satisfy technological requirement, therefore needs a kind of HNO efficient, with low cost of design
3Reclaim equiment.
The utility model content
Technical problem to be solved in the utility model provides and a kind ofly can satisfy oxidant highly efficient regeneration in circulation catalytic oxidation high-sulfur high-arsenic difficult separation concentrate in the three phase fluidized bed or the cyanidation tailings technology and equipment with low cost.
In order to achieve the above object, the utility model fully takes into account HNO on the one hand
3Fast, the highly efficient regeneration problem; Consider original power set in the reaction system on the other hand, promptly membrane compressor can provide power for regenerative system, makes whole technology as long as satisfy the requirement of reaction system and regenerative system simultaneously once the cover power set, thereby has saved cost.
Its know-why is as follows:
First chemical principle
(1) oxidation of NO
Temperature is lower than 100 ℃ or 5 * 10 under normal pressure
5When temperature was lower than 200 ℃ under the Pa, NO was oxidized to NO
2Reaction can think irreversible.This reaction equation is
NO (g)+0.5O
2(g) → NO
2Reaction rate constant is expressed as lg k
1=652.1/T-4.747 should react and be exothermic reaction, and was the slowest with respect to other reaction rates of nox adsorption process, so this reaction determined the degree of NO oxidation, and high pressure and low temperature help the carrying out that react as can be known by following formula.
(2) NO
2Be polymerized to N
2O
4
It is reported NO
2Aggregate into N
2O
4Reaction greatly about 10
-4Just reach balance in the s, this reaction equation is
2NO
2(g)→N
2O
4(g)
Reaction equilibrium constant is lg k
2=2993/T-11.232
(3) oxides of nitrogen gas by the key reaction that water absorbs is
2NO
2(g)+H
2O(1→)HNO
3(1)+HNO
2(1)
N
2O
4(g)+2H
2O(1)→HNO
3(1)+HNO
2(1)
HNO
2(1)→1/3HNO
3(1)+2/3NO
2(g)+1/3H
2O
Net reaction
3NO
2(g)+H
2O(1)→2HNO
3(1)+NO(g)
Reaction equilibrium constant is
lg?k
3＝2003.8/T-10.763
(4) the uncommon nitric acid principle of absorption of nitrogen oxide
2NO(g)+HNO
3(1)+H
2O(1)→3HNO
2
HNO
2(1)→1/3HNO
3(1)+2/3NO(g)+1/3H
2O
Second portion pneumatic nebulization principle of absorption
Pneumatic nebulization is to utilize compressor that gas is compressed, spray at a high speed through a sharp-crested nozzle then, utilize the formed parital vacuum of high-speed gas of sharp-crested place ejection that liquid is drunk up, gas is at a high speed being carried the liquid ejection secretly, and liquid absorbs first to NOx.It is tiny droplet with liquid crushing that gas utilizes its huge momentum, because fogdrop diameter is very little, can not settle down at once, this just makes little droplet be full of the entire reaction device, increased the chance that absorption liquid contacts with gas greatly, absorption liquid can continue to absorb unabsorbed gases first, carries out absorbing the second time.In the gas outlet by a demister of forming by porous plate and filler, when little droplet passes through demister, a part is combined into big droplet settling gets off, and has one deck drop covering at filling surface NOx gas to be formed three times and absorb, thereby has improved absorption efficiency greatly.
For achieving the above object, the technical scheme taked of the utility model is: it comprises absorption plant, surge tank, air jet pipe, sparge pipe.Absorption plant, the first half are long 1m of being, internal diameter is the cylinder of 60mm, the latter half is a high 20cm of being, internal diameter is the liquid storage cylinder of 20cm, and top and the bottom weld together, length overall 1.2m, the device open-top, offer 3 spray holes from installing a side apart from top 40mm, its spacing is 0.21m, and the purpose of offering 3 spray holes mainly is according to whiff pressure, by adjusting spray height, thereby reach needed assimilation effect with the control liquid-gas ratio; There is a demister at place, welding plane in the device top and the bottom, demister is made up of a porous plate and filler, can adjust packed height as required, can make a part of little droplet condense into droplet on the one hand by demister settles down, can carry out secondary to gas on the other hand absorbs, improved absorption efficiency, in addition, on the welding plane of liquid storage cylinder, 3 have been offered highly equally, the mouth that bore is the same: one of them is an imbibing hole, with spray hole in the same side, pass through silica gel plug, sparge pipe, pipette links to each other with spray hole, thereby the closed circulation that realizes absorption liquid absorbs, another is the gas outlet, and is relative with the imbibing hole position, links to each other with escape pipe by silica gel plug, another is a sample tap, become 90 ° with the orientation, gas outlet, link to each other with probe tube by silica gel plug, also having one is an interpolation blind pipe, relative with the sample tap position, be used for plugging in thermometer, observing the absorption liquid temperature, and adjust according to experiment effect.Experiment shows that for same jet, sparge pipe, under same atomisation pressure, spray height is high more, and liquid-gas ratio is low more, but can prolong the time of contact of gas and liquid; For same jet, sparge pipe, under same spray height, whiff pressure is big more, and liquid-gas ratio can be along with increase, but reaches can reduce or become behind the certain value irregular; And the air jet pipe of each corresponding bore all has the whiff pressure scope an of the best, exceed this scope or be unfavorable for absorption, perhaps cause power source waste, should come that choose reasonable is jet according to the purpose that absorbs in the reality, sparge pipe bore, spray height and whiff pressure.
Described air jet pipe is to be respectively 10cm, 32cm, 60cm by length, the air inlet bore is 5mm, jet bore is respectively 0.2mm, 0.5mm, 0.8mm, 1.1mm, 1.4mm, 1.7mm, 2.1mm, and air inlet becomes 90 ° three set of tubes to form with the gas outlet direction, three set of tubes are mainly the requirement of satisfying different spray height, and different bores are mainly the requirement of satisfying different tolerance.According to circulation catalytic oxidation high-sulfur high-arsenic difficult separation concentrate in the three phase fluidized bed or the existing research of cyanidation tailings technology are chosen the air jet pipe that jet bore is 0.5mm.
Described sparge pipe is to be 10cm by length, the imbibition aperture is 5mm, the hydrojet aperture is respectively 0.2mm, 0.5mm, 0.8mm, 1.1mm, 1.4mm, 1.7mm, 2.1mm, and imbibing hole becomes 7 pipes of 90 ° to form with the spray hole direction, under the situation that spray height and atomisation pressure are determined, can seek best liquid-gas ratio by the bore of adjusting sparge pipe, satisfy the requirement of technology assimilation effect.Learn that through experiment at jet bore be under the 0.5mm, spray height is 0.975m, and whiff pressure is 0.09Mpa---between the 1.7Mpa, choose the sparge pipe that the hydrojet aperture is 0.5mm, and the gas-liquid volume ratio minimum, assimilation effect is best.
Described surge tank is that an internal diameter is 24cm, height is the cylinder of 70cm, top center is offered the hole of a bore 5cm, cooperate with silica gel plug and can be used as the tail gas return port and use, top one side is offered two air inlets, bottom one side is offered a gas outlet, and bottom centre is provided with a taphole that has valve, the totally about 30L of surge tank.The effect of surge tank mainly is to be oxidized to NO for NO
2Time enough is provided.According to the member of seminar circulation catalytic oxidation high-sulfur high-arsenic difficult separation concentrate in the three phase fluidized bed or the existing research of cyanidation tailings technology are learnt: under existing experiment condition, per hour produce 400L gas.The mean residence time of gas in surge tank that calculating contains NO as can be known is near 4min, and this has just guaranteed the oxidizability of NO, thereby helps the absorption of NOx.
Beneficial effect
Compare with existing absorption system, the advantage that the utility model is applied to circulation catalytic oxidation high-sulfur high-arsenic difficult separation concentrate in the three phase fluidized bed or cyanidation tailings technology is:
(1) compares with tower absorption techniques such as packed tower, plate columns, the utility model does not need extra power-equipment, can directly provide power by means of the original air compressor of technology, whole technology only needs a cover power-equipment to get final product, reduce the operating cost of technology, improved the utilization rate of equipment.
(2) compare with traditional absorption system, the utility model infiltration rate is fast, the absorption efficiency height.Reach same assimilation effect, the utility model only needs seldom absorption liquid with respect to other technology, has saved resource.Experiment shows that gas-liquid volume ratio is between 620-700 under the condition selected for circulation catalytic oxidation high-sulfur high-arsenic difficult separation concentrate in the three phase fluidized bed or cyanidation tailings technology, and the gas-liquid mol ratio is between 0.47-0.51.Studies show that by the NOx absorption experiment that in addition its absorptivity can reach more than 98%.
(3) to compare adjustability bigger for the utility model and traditional absorption system, can control assimilation effect by 6 factors of the packed height in spray height, air jet pipe bore, sparge pipe bore, whiff pressure, absorption liquid temperature, escape pipe bore, the demister, can satisfy the requirement of technology different tolerance, different assimilation effects.
(4) equipment is easy to make, and is convenient to operation.
Description of drawings
Fig. 1 is the absorption plant front view.
Fig. 2 is the absorption plant left view.
Fig. 3 is the absorption plant vertical view.
Fig. 4 is the surge tank front view.
Fig. 5 is the surge tank left view.
Fig. 6 is air jet pipe/sparge pipe left view.
Fig. 7 is the connection layout of absorption plant and air jet pipe, sparge pipe.Among the figure: 1-liquid storage cylinder, 2-sample tap, 3-gas outlet, spray hole of 4-, No. two spray holes of 5-, No. three spray holes of 6-, 7-fumarole, 8-imbibing hole, 9-thermometer intubate, 10-demister, 11-cylinder, air inlet of 12-, No. two air inlets of 13-, 14-taphole, 15-return port, 16-gas outlet, 18-surge tank.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 is described, by silica gel plug sparge pipe and spray hole (4 among Fig. 1,5,6 selects one of them) is coupled together, and couples together by corrosion-resistant pipe, silica gel plug and imbibing hole 2; By silica gel plug fumarole 7 and air jet pipe are coupled together, guarantee that the vents face of sparge pipe becomes 90 ° with the vents face of air jet pipe, and the vents face of sparge pipe being in the vents face central authorities of air jet pipe, is advisable about with 0.5mm in the gap between the both ends of the surface; On thermometer intubate 9, plug the temperature of thermometer measure absorption liquid, so that according to the required adjustment absorption liquid of condition temperature; By silica gel plug sample tap 8 and probe tube are coupled together so that take a sample at any time, measure the assimilation effect of absorption liquid.In the work compressor is connected with air jet pipe, gas through overcompression sprays at a high speed at the jet mouth of pipe, near the jet mouth of pipe, form parital vacuum, utilize this parital vacuum that absorption liquid is sucted, the gas of ejection is broken for tiny droplet with the absorption liquid of ejection at once at a high speed, because little fogdrop diameter is very little, sedimentation at once, along with the ejection that continues, little droplet will be full of whole absorption plant, unabsorbed gases will continue to be absorbed by little droplet, just settle down when collision between the little droplet is combined into big water droplet, and gas and little droplet are during through demister 10, because the drag effect of demister, little droplet is combined into little water droplet greatly, settle down, and demister can form the secondary absorption to gas, improved absorption efficiency greatly, the little water droplet that settles down is ejected absorption gas again through sparge pipe, so goes round and begins again, and is saturated until absorbing.
The effect of surge tank is mainly the NO gas cyaniding time enough is provided, to guarantee the assimilation effect of absorption plant.
Claims (3)
1. pneumatic nebulization absorption plant, comprise liquid storage cylinder (1), spray hole, surge tank (18) and cylinder (11), it is characterized in that: described cylinder (11) is welded in liquid storage cylinder (1) end face middle position, and cylinder (11) is equipped with demister (10) with liquid storage cylinder (1) place of connection; A spray hole (4), No. two spray holes (5) and No. three spray holes (6) equidistantly are distributed in cylinder (11) one sides from top to bottom successively, fumarole (7) is positioned at cylinder (11) top, described imbibing hole (8) is positioned at liquid storage cylinder (1) end face and the relative position of spray hole outlet, and thermometer intubate (9) is positioned at liquid storage cylinder (1) end face and the relative position of imbibing hole (8); Described sample tap (2) and gas outlet (3) are positioned at liquid storage cylinder (1) end face relative position and are 90 ° of relations with thermometer intubate (9) and imbibing hole (8).
2. a kind of pneumatic nebulization absorption plant according to claim 1 is characterized in that: be inserted with thermometer in the described thermometer intubate (9).
3. a kind of pneumatic nebulization absorption plant according to claim 1, it is characterized in that: described surge tank (18) top center has return port (15), an air inlet (12) and No. two air inlets (13) are positioned at surge tank (18) top one side from top to bottom, one side gas outlet (16), surge tank (18) bottom, surge tank (18) bottom centre is provided with taphole (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201553536U CN201658933U (en) | 2010-04-09 | 2010-04-09 | Pneumatic atomizing absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201553536U CN201658933U (en) | 2010-04-09 | 2010-04-09 | Pneumatic atomizing absorption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201658933U true CN201658933U (en) | 2010-12-01 |
Family
ID=43229341
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|---|---|---|---|
| CN2010201553536U Expired - Fee Related CN201658933U (en) | 2010-04-09 | 2010-04-09 | Pneumatic atomizing absorption device |
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| CN (1) | CN201658933U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789789A (en) * | 2015-03-20 | 2015-07-22 | 中国石油大学(北京) | Treatment method of cyanide-containing mineral slag in gold smelting process |
| CN106145071A (en) * | 2015-04-03 | 2016-11-23 | 北京航天试验技术研究所 | A kind of dinitrogen tetroxide spent liquor processing means and method for treating waste liquid thereof |
| CN110327777A (en) * | 2019-07-31 | 2019-10-15 | 苏州兰斯洛特环保科技有限公司 | The device of pneumatic nebulization removing automobile exhaust pollutant |
-
2010
- 2010-04-09 CN CN2010201553536U patent/CN201658933U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789789A (en) * | 2015-03-20 | 2015-07-22 | 中国石油大学(北京) | Treatment method of cyanide-containing mineral slag in gold smelting process |
| CN106145071A (en) * | 2015-04-03 | 2016-11-23 | 北京航天试验技术研究所 | A kind of dinitrogen tetroxide spent liquor processing means and method for treating waste liquid thereof |
| CN110327777A (en) * | 2019-07-31 | 2019-10-15 | 苏州兰斯洛特环保科技有限公司 | The device of pneumatic nebulization removing automobile exhaust pollutant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Duan Guangjie Inventor after: Zhao Yinghua Inventor after: Li Shan Inventor after: Zhang Wenfeng Inventor after: Tan Dongdong Inventor after: Zhang Shu Inventor after: Hua Yani Inventor after: Dong Jinhui Inventor after: Bi Defu Inventor after: Wan Fengzhi Inventor after: Yang Ming Inventor after: Li Dengxin Inventor after: Shi Penghui Inventor after: Su Ruijing Inventor after: Xi Ming Inventor after: Liu Guangtao Inventor after: Wu Jingjing Inventor after: Zhao Songjian Inventor after: Wang Enqiang Inventor after: Wang Jianbo Inventor after: Jin Cheng Inventor before: Duan Guangjie Inventor before: Li Dengxin Inventor before: Xi Ming Inventor before: Liu Guangtao Inventor before: Wu Jingjing Inventor before: Zhao Songjian Inventor before: Wang Enqiang Inventor before: Wang Jianbo Inventor before: Jin Cheng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: DUAN GUANGJIE LI DENGXIN XI MING LIU GUANGTAO WU JINGJING ZHAO SONGJIAN WANG ENQIANG WANG JIANBO JIN CHENG TO: DUAN GUANGJIE LI DENGXIN XI MING LIU GUANGTAO WU JINGJING ZHAO SONGJIAN WANG ENQIANG WANG JIANBO JIN CHENG ZHAO YINGHUA LI SHAN ZHANG WENFENG TAN DONGDONG ZHANG SHU HUA YANI DONG JINHUI BI DEFU WAN FENGZHI YANG MING SHI PENGHUI SU RUIJING |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20130409 |