CN102160973A - Spray-cascade coal slurry preprocessor - Google Patents
Spray-cascade coal slurry preprocessor Download PDFInfo
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- CN102160973A CN102160973A CN2011100602568A CN201110060256A CN102160973A CN 102160973 A CN102160973 A CN 102160973A CN 2011100602568 A CN2011100602568 A CN 2011100602568A CN 201110060256 A CN201110060256 A CN 201110060256A CN 102160973 A CN102160973 A CN 102160973A
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Abstract
The invention provides a spray-cascade coal slurry preprocessor. The preprocessor comprises a cascade tank and a spray device, wherein slide plates are fixedly connected to two sides of the lower tank body of the cascade tank; a central feeding pipe and a feeding tank are arranged on the upper tank body of the cascade tank, overflow grooves are formed on two sides inside the cascade tank, and separators are arranged in the overflow grooves; the slide plates at two sides of the lower tank body of the cascade tank are divided into upper slide plates and lower slide plates respectively; the assembly position of the left slide plate is higher than that of the right slide plate; thresholds are fixedly connected to the slide plates; the spray device is a pneumatic injection atomizer, and comprises an atomizer body and a nozzle; a stepped through hole is formed inside the atomizer body, and an administration port communicated with the inside of the atomizer body is formed on the atomizer body; the nozzle is arranged in the middle of the through hole, and an injection chamber and a mixing pipe are arranged under the nozzle; and the upper end of the atomizer is connected with a compressed air pipeline. The spray device adopts the pneumatic injection type atomizer to solve the problem of nozzle blockage, and has the advantages of small volume, simple structure, and low power consumption, and is easy to manufacture.
Description
Technical field
The present invention relates to a kind of coal slurry pre-processing device, specifically a kind ofly carry out pretreated atomized fall type coal paste preprocessor at coal preparation plant's floatation feed.
Background technology
At present, in coal preparation plant floatation feed is carried out in the pretreated process, common flotation agent process for dispersing has mechanical dispersion, emulsification to disperse and atomizing disperses, wherein mechanical dispersion is because the linear velocity of impeller is limited, the droplet diameter that is disperseed is bigger, in coal slurry, mix evenly inadequately, increased the flotation agent consumption; It is that press water sprays from nozzle that emulsification disperses commonly used, forms after the negative pressure flotation agent wrapped up in to be rolled onto in the jet to mix with coal slurry; And existing atomizing to disperse be that flotation agent enters the dish center, the back side that hazes through administration funnel and oil pipe nozzle, the dish that hazes then rotates at a high speed, realization flotation agent disperses, this atomizing disperses and need turn round in airtight preparation device, the dish rotating speed is fast by hazing, reach 2945r/min, this is just to its requirement for dynamic balance strictness, otherwise very easily damages bearing, burns motor; And effective in order to haze, the nozzle diameter of existing oil pipe is very little usually, is easy to be stopped up by foreign material or floccule, not only cleaning difficulty, and also nozzle influences atomizing effect easily by the corrosion of the chemical substance in the flotation agent; Difficulty is adjusted in nozzle and the gap that hazes between the dish, for the very difficult control of the size of fogging degree, does not reach desirable atomizing effect, so the functional reliability of the dish that hazes is relatively poor.
Existing method with flotation agent and coal slurry mixing has mechanical mixture, landing-type to mix, pipeline mixes and drop type mixes.Wherein mechanical mixture is that coal slurry and flotation agent in the rotation are mixed, and weak effect, flotation agent consumption are many; Landing-type mixes and pipeline mixes, and goes into float coal slurry and flotation agent weak point time of contact, and the coal grain surface that ash content is low, granularity is thicker has little time to form enough stable oil films and just enters flotation device, causes part rough coal grain to be lost in the tail coal.
Patent Office is the dish that hazes in disclosed application number is that atomising device in 201010033384.9 the patent of invention " atomized fall type coal paste preprocessor " adopts 2010-07-14 day.This atomization system be with haze the dish the front as the atomizing working face, establish a small sleeve in its main shaft periphery, the chemical feed pipe port of export is not established nozzle, and flotation agent flows to main shaft through chemical feed pipe, under action of centrifugal force, flotation agent flows to the Pan Zhongjianhuanxingqu that hazes after being thrown to the small sleeve inwall, rather than feeds the central point of the dish that hazes, so can not form thin oil film along 360 circumference, and can only form a sector along certain included angle, so oil film is thicker, droplet diameter is bigger.Though this atomization system does not have the oil pipe nozzle, solved foreign material or floccule blocking problem, atomizing effect is relatively poor, does not meet technological requirement.
Summary of the invention
Of the present invention to the effect that with pneumatic injection formula flotation agent atomization technique and coal slurry on the slide plate that has the bank bar continuously the drop type hybrid technology combine.
The present invention be directed to application number and be the shortcoming of dish of hazing in 201010033384.9 the patent of invention, use pneumatic injection formula atomizer instead, provide a kind of flotation agent dispersion effect good, and flotation agent mixes sufficient atomized fall type coal paste preprocessor with coal slurry.
Realize that the technical scheme that the foregoing invention purpose adopts is: a kind of atomized fall type coal paste preprocessor comprises and falls case and be arranged on the atomising device that falls the box top that the described lower part box both sides of falling case are connected with slide plate; Fall the upper box part casing and be provided with central feed tube and feed box, its inner both sides are provided with overflow launder, are provided with the dividing plate of tape punching in the overflow launder; The described slide plate that falls lower box part casing both sides is divided into upper slide and lower skateboard, the installation site of left side slide plate all is higher than the right side slide plate, the angle of upper slide and lower skateboard and horizontal plane is 2 °～6 °, evenly be connected with the bank bar that is 30 °～60 ° of angles with it on the slide plate, described atomising device is a pneumatic injection formula atomizer, this atomizer comprises atomizer body and nozzle, and the atomizer body interior is step-like through hole, and this atomizer body is provided with the dosing mouth with its internal communication; Nozzle is arranged on the middle part of this through hole, and the nozzle below is followed successively by jet chamber and mixing tube; The upper end of described atomizer body is connected with compressed air line.
Atomising device adopts pneumatic injection formula atomizer in the coal paste preprocessor provided by the invention, make compressed air pass through nozzle, form air-flow, utilize this air-flow to cut, be separated into liquid flotation agent vaporific, solved very easily blocking problem of existing nozzle, and volume is little, simple in structure, be convenient to make, low in energy consumption; Because pneumatic injection formula atomizer does not have motor element, do not need the special messenger to nurse substantially and safeguard that functional reliability is good again, it is effective to haze, and the scope of application is wide; Falling case and can realize falling repeatedly of coal slurry among the present invention, make it in falling process, have enough spaces to contact with the flotation agent that disperses through atomizing, mix fully, help forming enough, stable oil film on its surface, and the upper and lower slide plate that has the bank bar has different contact pretreatment times to thick in the coal slurry, fine grained, for good process conditions have been created in the coal slurry preliminary treatment.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to view.
Fig. 3 is a pneumatic injection formula atomizer structure schematic diagram.
Fig. 4 is the atomizing situation curve map of pneumatic injection formula atomizer.
Fig. 5 is the atomizing situation curve map that hazes and coil.
Fig. 6 is an industrial production cost comparative test result table.
Among the figure: atomising device 1, compressed air line 2, by-pass valve control 3, Pressure gauge 4, control valve 5, flotation agent adds pipeline 6, adds drug bucket 7, upper box body 8, dividing plate 9, overflow launder 10, lower part box 11, upper slide 12, lower skateboard 13, bank bar 14, dosing pipe 15, central feed tube 16, nozzle 17, dosing mouth 18, jet chamber 19, mixing tube 20, atomizer body 21.
The specific embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Referring to accompanying drawing 1-3, it is a kind of atomized fall type coal paste preprocessor that present embodiment wants disclosed, specifically, what the atomising device of this coal paste preprocessor adopted is pneumatic injection formula atomizer, it is the dish that hazes of 201010033384.9 patents of invention that this atomizer has replaced application number, pneumatic injection formula atomizer is arranged on and falls the center, box top, and its underpart is arranged on the inside of falling case.
This atomized fall type coal paste preprocessor, comprise and fall case and be arranged on the atomising device that falls the box top that fall upper box part casing 8 and be provided with central feed tube 16, its inner both sides are provided with overflow launder 10, be provided with the dividing plate 9 of tape punching in the overflow launder 10, dividing plate 9 is arranged on the top of overflow launder 10.Central feed tube 16 is communicated with feed box, overflow launder 10.The slide plate that falls lower box part casing 11 both sides is divided into upper slide 12 and lower skateboard 13, the installation site of left side slide plate all is higher than the right side slide plate, each slide plate all is obliquely installed, upper slide 12 and lower skateboard 13 are 2 °～6 ° with the angle of horizontal plane, evenly are connected with the bank bar 14 that is 30 °～60 ° of angles with it on the slide plate; Atomising device 1 is a pneumatic injection formula atomizer, this atomizer comprises atomizer body 21 and nozzle 17, atomizer body 21 inside are step-like through hole, and this atomizer body 21 is provided with the dosing mouth 18 with its internal communication, nozzle 17 is arranged on the middle part of this through hole, nozzle 17 belows are followed successively by jet chamber 19 and mixing tube 20, and jet chamber 19 is the conical pipe structure, and mixing tube 20 is communicated with the bottom of jet chamber 19 and is isometrical.The upper end of atomizer body 21 is connected with compressed air line 2, the other end of this compressed air line 2 is communicated with compressed air system, and compressed air line 2 is provided with control valve 3 and Pressure gauge 4, is used for controlling compressed-air actuated air pressure in real time, thereby reaches the purpose of controlling the air-flow wind speed.
Pneumatic injection formula atomizer is arranged on and falls the center, box top, and the bottom of atomizer body 21 places the inside of falling the box top, guarantees directly to enter upper box body after compressed air is by nozzle 17, jet chamber 19 and mixing tube 20.
The course of work of this coal paste preprocessor is: coal slurry is dispersed in the overflow launder 10 of upper box body both sides after entering feed box by central feed tube 16, perforation on dividing plate 9 is waterfall shape and evenly overflows, and drop down onto on the slide plate of casing both sides, because slide plate is originally as being obliquely installed, coal slurry can drop down from level to level along with slide plate, until outlet at bottom.In the process that coal slurry falls, open by-pass valve control 3, make compressed air enter into atomizing body 21 by compressed air line 2, meanwhile, flotation agent adds pipeline 6 and flotation agent is added to adds in the drug bucket 7, and is entered in the atomizer body 21 by dosing mouth 18 by dosing pipe 15, compressed air is through nozzle 17 time, because diameter diminishes, compressed air forms the air-flow that wind speed is about 12m/s, cuts, is dispersed into flotation agent vaporific.Like this, vaporific flotation agent just can contact with coal slurry timely.
Generally speaking, the wind speed that can satisfy air-flow is the compressed-air actuated blast of 12m/s when being 0.08MPa, and air quantity only needs 2m
3About/h, its power consumption has only 0.11kwh.
One, tests and data analysis for the atomizing situation of the atomizing disc type atomising device of the pneumatic injection formula atomising device of coal paste preprocessor disclosed in this invention and prior art, Winner312 type laser particle size analyzer with the advanced person carries out atomizing effect mensuration, obtain droplet average diameter (by volume calculating) with computer mathematical statistics method again, their atomizing effect is seen the atomizing situation curve map shown in the accompanying drawing 4-5.
As seen from the figure:
1, haze the fogdrop diameter that produced of dish in the 60-180 mu m range, the fogdrop diameter of pneumatic injection formula atomizer is in the 7-9 mu m range, and the former is much thicker than the latter;
2, when the flotation agent addition less than or during greater than the 22-24L/h scope, the fogdrop diameter of the dish that hazes all can become greatly, the scope of application is narrow, may cause the reason of this situation to be:
When 1. the flotation agent addition was too small, the jet intensity that is ejected by the mouth of pipe nozzle of dosing pipe was little, and part flotation agent is not ejected into the center of the dish that hazes;
When 2. the flotation agent addition is too much, because jet intensity is big, producing reflection on the dish that hazes, also may be the cause of the oil film thickening that forms on card.
Shown by above droplet measurement result: the fogdrop diameter of pneumatic injection formula atomizer is little, and when the flotation agent consumption changed, the atomizing situation changed little.Atomizing effect that technical measures produced that this proof adopts compressed air to atomize dish that is far superior to haze.
Two, the paired contrast test of industrial production
Begin facing shining coal separation workshop, coal preparation plant Westbound first phase production system in March, 2010 to 4105
#Flotation device and 4106
#Flotation device carries out repeatedly contrast test in pairs.These two flotation devices are all FJC16-4 type air jet flotation machine, 4105
#What flotation device used is FCA-2500 type atomized fall type coal paste preprocessor (pneumatic injection formula atomizer is housed), 4106
#What flotation device used is existing XK-400 type kaskad apparatus for pre-flotation pulp conditioning (having the dish that hazes).
So-called paired contrast test is exactly at one time, by the same driver operation, to a kind of floatation feed, carries out the flotation device contrast test of these two same model specifications with same flotation agent, so comparativity is strong.Five compositions that successively carry out are seen accompanying drawing 6 to the contrast test average result.
According to MT/T180-1988＜＜coal preparation plant's floatation process effective evaluation method can use flotation to improve index for the floatation process effect of coal slime under different process conditions of same nature to judge.As known from Table 1, under the similar condition of separation index, FCA-2500 type atomized fall type coal paste preprocessor is saved floating agent consumption 24.17% than existing XK-400 type kaskad apparatus for pre-flotation pulp conditioning.Because the employed flotation agent of coal preparation plant mostly is the petroleum-type product, research and development of the present invention meet the policy of national energy-saving and emission-reduction, also meet the fundamental state policy of building a resource-conserving society.
Claims (3)
1. an atomized fall type coal paste preprocessor comprises and falls case and be arranged on the atomising device that falls the box top that the described lower part box both sides of falling case are connected with slide plate; Fall the upper box part casing and be provided with central feed tube and feed box, its inner both sides are provided with overflow launder, are provided with the dividing plate of tape punching in the overflow launder; The described slide plate that falls lower box part casing both sides is divided into upper slide and lower skateboard, the installation site of left side slide plate all is higher than the right side slide plate, the angle of upper slide and lower skateboard and horizontal plane is 2 °～6 °, evenly be connected with the bank bar that is 30 °～60 ° of angles with it on the slide plate, it is characterized in that, described atomising device is a pneumatic injection formula atomizer, this atomizer comprises atomizer body and nozzle, the atomizer body interior is step-like through hole, and this atomizer body is provided with the dosing mouth with its internal communication; Nozzle is arranged on the middle part of this through hole, and the nozzle below is followed successively by jet chamber and mixing tube; The upper end of described atomizer body is connected with compressed air line.
2. atomized fall type coal paste preprocessor according to claim 1 is characterized in that, described dosing mouth is connected with the flotation agent dosing pipe.
3. atomized fall type coal paste preprocessor according to claim 1 is characterized in that, described pneumatic injection formula atomizer is arranged on and falls the center, box top, and the bottom is arranged on the inside of falling case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100602568A CN102160973A (en) | 2011-03-14 | 2011-03-14 | Spray-cascade coal slurry preprocessor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100602568A CN102160973A (en) | 2011-03-14 | 2011-03-14 | Spray-cascade coal slurry preprocessor |
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| CN102160973A true CN102160973A (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100602568A Pending CN102160973A (en) | 2011-03-14 | 2011-03-14 | Spray-cascade coal slurry preprocessor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103007795A (en) * | 2012-12-20 | 2013-04-03 | 唐山森普工程设计有限公司 | Atomization agitating type coal slurry preprocessor |
| CN103041926A (en) * | 2013-01-30 | 2013-04-17 | 唐山国华科技国际工程有限公司 | Flotation process method of high-ash-content fine coal slime |
| CN103191902A (en) * | 2013-03-28 | 2013-07-10 | 鲁正友 | Impact type non-power-driven building waste regeneration planting soil and stabilized soil mixing system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044770A (en) * | 1989-02-09 | 1990-08-22 | 株式会社伊萨基开发工机 | The method and apparatus of mixing material and flocculating agent |
| CN101773795A (en) * | 2010-01-15 | 2010-07-14 | 唐山国华科技有限公司 | Atomized fall type coal paste preprocessor |
| CN202052483U (en) * | 2011-03-14 | 2011-11-30 | 唐山国华科技有限公司 | Atomization-drop type coal slurry pretreatment device |
-
2011
- 2011-03-14 CN CN2011100602568A patent/CN102160973A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044770A (en) * | 1989-02-09 | 1990-08-22 | 株式会社伊萨基开发工机 | The method and apparatus of mixing material and flocculating agent |
| CN101773795A (en) * | 2010-01-15 | 2010-07-14 | 唐山国华科技有限公司 | Atomized fall type coal paste preprocessor |
| CN202052483U (en) * | 2011-03-14 | 2011-11-30 | 唐山国华科技有限公司 | Atomization-drop type coal slurry pretreatment device |
Non-Patent Citations (1)
| Title |
|---|
| 赵树彦等: "PS系列煤浆预处理器", 《煤质技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103007795A (en) * | 2012-12-20 | 2013-04-03 | 唐山森普工程设计有限公司 | Atomization agitating type coal slurry preprocessor |
| CN103041926A (en) * | 2013-01-30 | 2013-04-17 | 唐山国华科技国际工程有限公司 | Flotation process method of high-ash-content fine coal slime |
| CN103191902A (en) * | 2013-03-28 | 2013-07-10 | 鲁正友 | Impact type non-power-driven building waste regeneration planting soil and stabilized soil mixing system |
| CN103191902B (en) * | 2013-03-28 | 2015-03-04 | 鲁正友 | Impact type non-power-driven building waste regeneration planting soil and stabilized soil mixing system |
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Application publication date: 20110824 |