CN102765741A - Separating and purifying device and method of white mud/carbide slag-gypsum process desulphurization gypsum slurry - Google Patents
Separating and purifying device and method of white mud/carbide slag-gypsum process desulphurization gypsum slurry Download PDFInfo
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Abstract
The invention discloses a separating and purifying device and method of white mud/carbide slag-gypsum process desulphurization gypsum slurry. The device comprises a first-stage separation tank separation device and a second-stage separation tank separation device, wherein the first-stage separation tank separation device and the second-stage separation tank separation device comprise agitation tanks and sedimentation tanks of which the bottom parts and middle parts are communicated with one another; the agitation tanks are provided with agitation blades, slurry pipes and circulating water pipes; slurry outlets are formed on the bottom parts of the agitation tanks; suspended liquid outlets are formed on the middle parts of the sedimentation tanks; and the slurry outlet of a first-stage sedimentation tank first-stage separation device is communicated with the slurry pipe of a second-stage sedimentation tank second-stage separation device. The device and method disclosed by the invention have the advantages that the characteristic of different sedimentation rates of gypsum granules and black suspended matters in the gypsum slurry is utilized, and the black suspended matters are removed from the gypsum slurry by a two-stage suspending and agitating sedimentation separation device, so that the moisture of the gypsum is guaranteed to be stable below 10%, the gypsum purity is higher than 90%, and the quality of the white mud/carbide slag-gypsum process desulphurization gypsum is effectively improved.
Description
Technical field
The present invention relates to the flue gas desulfurization technique field, be specifically related to the separation knot screen and the method for a kind of white clay/acetylene sludge-gypsum process desulphurization gypsum slurries.
Background technology
Do with white clay/carbide slag in the white clay/acetylene sludge-gypsum process flue gas desulfurization course of sweetening agent; Water-insoluble impurity in white clay/carbide slag and from the constantly accumulation in the absorption tower of the grey branch in the flue gas, form particle diameter below 45 μ m, true density is at 1.5～1.8g/cm
3Between the black suspension mixture, be called for short the black suspension thing.The black suspension thing is accumulated in the gypsum slurries, has reduced the stability of desulfuration efficiency and desulphurization system.After the black suspension thing is discharged the entering dewatering system with desulfurated plaster, because the hydrocyclone separating effect is very poor, during the dehydration of vacuum band filter; The black suspension thing can stick on filter cloth, the gypsum surface; Make gypsum dehydration become difficult, gypsum purity reduces simultaneously, and quality descends.
Notification number is dewatering and the device that the Chinese invention patent of CN1325419C discloses a kind of flue gas desulfurization gypsum slurry; Next door at desulfuration absorbing tower connects drying tower; The gypsum slurries vent pipe of desulfuration absorbing tower bottom is connected to the spraying plant on drying tower top through the gypsum overboard pump, and first tributary pipe of former flue is communicated to the mouth that advances of drying tower bottom through placed in-line booster fan, parget water sub-controller or flue gas divider; The drying tower bottom is provided with the gypsum displacer; The second tributary manifold of the pipe of drying tower and former flue closes, and is communicated to the mouth that advances of desulfuration absorbing tower, and the smoke-uptake of desulfuration absorbing tower is connected with chimney.This device makes full use of former flue gas heat; Accomplish the dehydration of desulfurated plaster slurries with lower energy consumption; The hydrocyclone and the vacuum belt machine of conventional dehydration system have been saved; Be applicable to the gypsum dehydration technology of limestone-gypsum wet fuel gas desulfurizing technology, if this technology is used for the gypsum slurries dehydration of white clay/carbide slag-gypsum wet sulfur removal technology, because black suspension impurity lock outlet capacity is stronger in the gypsum slurries of white clay/carbide slag sulfur removal technology; Hot flue gas can not effectively be removed this part moisture, so this technology is not suitable for the dehydration of the gypsum slurries of white clay/carbide slag-gypsum wet sulfur removal technology.
Publication number is that the Chinese patent of CN102071587A discloses a kind of method of removing black gelatinoid in the flue gas desulfurization absorption agent paper white sludge; This invention is carried out the desulfurization pre-treatment to white clay; White clay is through changing steps such as stock tank, vibratory screening apparatus, ultrasonic cleaning equipment, the pond of sizing mixing; Black jelly in the white clay is discharged with the rinse water overflow, and purity improves.Make sweetening agent with white clay after the pre-treatment, the gypsum quality improves.Publication number is that the Chinese patent of CN102351232A discloses a kind of technology of removing ferrosilicon in the carbide slag slurries; It is the magnetic field of 0.05-0.5T through magneticstrength that carbide slag slurry sieves back; Remove ferrosilicon particle wherein; Reduce the carbide slag desulfurization and produce the black impurity in the desulfurated plaster, improve the quality of gypsum.Above-mentioned two kinds of treatment processs all are that sweetening agent is handled, and make it meet the requirement of flue gas desulfurization technique.But because white clay/carbide slag pre-treating technology limited use, in white clay/acetylene sludge-gypsum process flue gas desulfurization technique, use lessly, impurity still exists white clay/acetylene sludge-gypsum process flue gas desulphurization system and gypsum quality influence problem in white clay/carbide slag.
Summary of the invention
The invention provides the separation knot screen and the method for a kind of white clay/acetylene sludge-gypsum process desulphurization gypsum slurries; Utilize black suspension thing subsidence rate different features in gypsum particle and the gypsum slurries; Adopt two-stage to suspend and stir black suspension thing in the settling separation device removal gypsum slurries; Guarantee that the gypsum water ratio is stabilized in below 10%, gypsum purity effectively improves the quality of white clay/acetylene sludge-gypsum process desulphurization gypsum greater than 90%.
The separation knot screen of a kind of white clay/acetylene sludge-gypsum process desulphurization gypsum slurries comprises flash trapping stage device and secondary separation device, and said flash trapping stage device and secondary separation device include:
Steel basin and subsider that bottom and middle part are communicated with mutually;
Stirring rake, slurry pipe and circulating pipe are set in the said steel basin, and said steel basin bottom is provided with the slurries outlet;
Said subsider middle part is provided with the suspension-s outlet;
The slurries outlet of said flash trapping stage device is communicated with the slurry pipe of said secondary separation device.
Because the foreign matter content of white clay/carbide slag is very high; Contain a lot of black suspension things in the gypsum slurries of white clay/acetylene sludge-gypsum process desulphurization technology; These black suspension thing particle diameters are about 0～45 μ m, and settling velocity still still possesses certain settling character not as gypsum.Utilize the gypsum particle in the gypsum slurries different, stir settlement separate the black suspension Impurity removal in the gypsum slurries through two-stage with the subsidence rate of black suspension thing.
In the flash trapping stage device; Gypsum particle is deposited to the slurries bottom under low mixing speed (60-200rpm); The black suspension thing then is suspended in the black suspension of upper strata, because slurries are in whipped state, is having part gypsum entering black suspension near the interfacial position of black suspension; Therefore subsider is set; Upper strata black suspension after stirring is introduced in the subsider, and sedimentation once more settles down the part gypsum particle that gets in the black suspension again and is back in the slurries of steel basin bottom.
About 70% the separated removal of black suspension thing in the isolating gypsum slurries of flash trapping stage device, the underflow slurries are delivered in the secondary separation device, simultaneously through circulating pipe delivery cycle water or process water; Same; Under low mixing speed (60-200rpm), gypsum and black suspension thing are accomplished secondary separation, after separation finishes; Remaining 30% the black suspension thing is separated removes in the gypsum slurries, the underflow slurries send into dewater in the vacuum band filter gypsum.
Be communicated with by curve bend between said subsider and the said steel basin bottom, inverted vacuum breaker is set in this curve bend.
Gravitate; The gypsum particle that in subsider, settles down can be in curve bend flows back to the suspension steel basin very smoothly; But said steel basin and subsider bottom and middle part all are communicated with, the influence that is stressed, and bottom tie point pressure is bigger; When liquid level in the subsider reduced, preferentially tie point flowed into subsider to slurries from the bottom.Therefore, in said curve bend section, inverted vacuum breaker is set, prevents adverse current, the interior upper strata suspension-s overflow of steel basin is advanced in the subsider.
Be communicated with by the inclination upflow tube between the middle part of said subsider and said steel basin, the inlet of said inclination upflow tube is communicated with steel basin, outlet is communicated with subsider, and inlet is higher than outlet.
The angle of said inclination upflow tube and vertical plane is 30～50 degree.
The distance of the inlet of said inclination upflow tube and steel basin bottom is 2/5～4/5 of a steel basin diameter, and said suspension-s outlet is positioned at 10～30cm place, top of inclination upflow tube outlet.
There is not stirring action in the subsider; Gypsum particle and black suspension thing all can sedimentations in subsider for the black suspension of having carried the part gypsum particle like this; The black suspension that gets into subsider from steel basin is tilted to current downflow; When getting into subsider, below the outlet of inclination upflow tube, form turbulent flow, the turbulent flow that forms in the subsider can make sedimentation part black suspension thing suspend again to rise and get into inclination upflow tube outlet upper area, discharge from the suspension-s outlet then.
It is 5～45 ° gathering section that said subsider bottom has the angle of inclination, and the height of this gatherings section is 1/10～1/5 of a subsider height, and this is communicated with on drawing section bottom and said curve bend in.The diameter of propeller blade of said stirring rake is 3/5～4/5 of a steel basin diameter, and the distance bottom steel basin is 5～20cm.The bottom slurries can both fully be stirred.
Said slurry pipe forms concentric or eccentric structure with the stir shaft of stirring rake, and the bottom outlet is positioned at 10～20cm place, blade top of stirring rake.
Reduce of the interference of steel basin inner assembly, make the black suspension separation surface steady, thereby reduce content near black suspension separation surface position gypsum to the stirring rake blade.
Said stirring rake can be the model that helps solid-liquid separation arbitrarily, can be two leaf oars, three leaf oars and other number of sheets oars.
Stirring rake is avoided in the bottom outlet of said circulating pipe, is lower than the inlet of said inclination upflow tube, and recirculated water can be mixed with said gypsum slurries to greatest extent.
The present invention also is provided with a suspension-s treatment trough, and said suspension-s treatment trough is communicated with the suspension-s outlet of flash trapping stage device and secondary separation device and the inlet of circulating pipe through pipeline respectively.In the suspension-s treatment trough, the sedimentation of black suspension thing, the clear liquor of removing the black suspension thing utilizes as recirculated water again.
But black suspension thing settling velocity is slow, makes in the recirculated water that utilizes again to contain the black suspension thing that part is not removed.Therefore; Preferably; Cylinder barrel shaped is arranged on described suspension-s treatment trough top, and turbination is arranged in the bottom, and the stage casing of said suspension-s treatment trough cylinder barrel shaped is provided with 2～3 layers at a distance from stream baffle plate or conduit; The pipeline that is communicated with said suspension-s outlet is positioned at said at a distance from baffle plate or conduit below, and the pipeline that is communicated with the inlet of said circulating pipe is positioned at said top at a distance from stream baffle plate or conduit.
In the black suspension treatment trough, the black suspension thing is at a distance from stream baffle plate or vessel layers below, and slowly deposition is finally discharged from the mud discharging mouth.At a distance from stream baffle plate or vessel layers the black suspension thing is helped settlement action, when black suspension was passed through at a distance from stream baffle plate or conduit, the black suspension thing settled down, and clear liquor gets at a distance from flowing baffle plate or conduit top, uses as recirculated water.
It is some at a distance from flow that described separated stream baffle plate is set to be parallel to each other, and have the angle of 30～60 degree with vertical direction, and be provided with carriage, and all are fixed on this carriage at a distance from the two ends of flows.Described conduit, the some oblique cutting pipes that comprise the back up pad of horizontal positioned and run through this back up pad, all oblique cutting pipes be parallel to each other and with vertical direction have 30～60 the degree angle.The separated flow of the separated stream of adjacent two layers baffle plate or the oblique cutting pipe of adjacent two layers conduit are mutually 30～60 degree angles and put.
Said steel basin sidewall is provided with vision slit, and the upper end of said vision slit is higher than said inclination upflow tube inlet 10～15cm, and the lower end is lower than said inclination upflow tube inlet 30～35cm.Observe black suspension separation surface situation through vision slit, when separation surface is lower than inclination upflow tube inlet lower edge, can regulate through increasing mixing speed, otherwise, as the same.
The present invention also provides the separation impurity-removing method of a kind of white clay/acetylene sludge-gypsum process desulphurization gypsum slurries, comprising:
(1) said gypsum slurries is introduced in the steel basin of flash trapping stage device; Stir layering, upper strata suspension-s overflow is advanced in this grade subsider, sedimentation again in subsider; The slurry reflux of subsider bottom is to steel basin; The suspension-s on top is flowed out by the suspension-s outlet, and after separation finished, the slurries of steel basin bottom were introduced in the secondary separation device and carried out secondary separation;
(2) bottom slurries in the steel basin of flash trapping stage device are introduced in the steel basin of secondary separation device, in this steel basin, fed recirculated water simultaneously, stir layering; Upper strata suspension-s overflow is advanced in this grade subsider; Sedimentation again in subsider, subsider bottom slurry reflux is to steel basin, and top suspension-s is flowed out by the suspension-s outlet; After secondary separation finishes, the bottom slurries in the steel basin through dewater gypsum.
To handle from the suspension-s sedimentation in the subsider of said flash trapping stage device and secondary separation device, send back to as recirculated water in the steel basin of said flash trapping stage device and secondary separation device.
Mixing speed is 60-200rpm in the said two-stage tripping device.Under this mixing speed, gypsum can fully be stirred, and is suspended in the tripping device bottom, and the black suspension thing in the gypsum rises to the black suspension liquid layer, gypsum and the layering of black suspension thing, and layering is obvious.When mixing speed was lower than 60rpm, separation unit bottoms had gypsum deposition, fully stirring and segregation.When mixing speed was higher than 200rpm, bottom calcium plaster liquid layer raise, and the black suspension liquid layer reduces, and gypsum and black suspension thing layered effect are poor.
Per-cent described in the present invention is not having all to refer to mass percent under the situation of specified otherwise.
Beneficial effect of the present invention:
Existing gypsum slurry separation plant includes only a suspension steel basin or one-level hydrocyclone, and after separation finished, perhaps the gypsum loss was serious, and perhaps the gypsum difficult treatment after the sedimentation also causes separation efficiency low easily.The present invention is provided with the two-stage tripping device and separates, and can to greatest extent the black suspension impurity in the gypsum slurries be separated, and improves the purity of gypsum, reduces the water ratio of gypsum.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the sectional view of tripping device of the present invention;
Fig. 3 is the vertical view of tripping device of the present invention;
Fig. 4 is the sectional view of suspension-s treatment trough of the present invention;
Fig. 5 is the structural representation of subsider among Fig. 2, curve bend and vacuum breaker part.
Embodiment
As shown in Figure 1, the separation knot screen of a kind of white clay/acetylene sludge-gypsum process desulphurization gypsum slurries comprises flash trapping stage device 1, secondary separation device 2, vacuum band filter 3 and suspension-s treatment trough 4.
Flash trapping stage device 1 is identical with the structure of secondary separation device 2, as shown in Figures 2 and 3, comprises steel basin 102 and subsider 111 that bottom and middle part are communicated with mutually.
The middle part of steel basin 102 is communicated with through inclination upflow tube 110 with the middle part of subsider 111; The inlet of inclination upflow tube 110 is communicated with steel basin 102; And the distance apart from steel basin 102 bottoms is 3/5 of steel basin 102 diameters; The outlet of inclination upflow tube 110 is communicated with subsider 111, and inclination upflow tube 110 is 45 degree with the angle of vertical plane, and inlet is higher than outlet.
The 20cm place that on subsider 111, is higher than 110 outlets of inclination upflow tube is provided with suspension-s outlet 109; Vision slit 112 is set on the sidewall of steel basin 102; The upper end of vision slit 112 is higher than inclination upflow tube 110 inlet upper edge 15cm, and the lower end is lower than inclination upflow tube 110 outlet lower edge 30cm.
The structure of suspension-s treatment trough 3 is as shown in Figure 4; Cylinder barrel shaped is arranged on top, and turbination is arranged in the bottom, is provided with 3 layers in the cylinder barrel shaped section at a distance from stream baffle plate 301; All insert at a distance from the below of stream swash plate 301 bottom of two sewer pipes 302, and obconic bottom is provided with mud discharging mouth 303.
Be fixed on some on this carriage at a distance from stream baffle plate 301 by carriage and two ends and form at a distance from flow, all are parallel to each other and have the angle of 45 degree with vertical direction at a distance from flows, and the separated separated flow of flowing baffle plate of adjacent two layers is put mutually in angle of 45 degrees.
As shown in Figure 1, the slurries outlet of flash trapping stage device 1 is through the inlet of the slurry pipe of pipeline connection secondary separation device 2, and the slurries outlet of secondary separation device 2 is communicated with the slurries inlet of vacuum band filter 3; The suspension-s outlet of flash trapping stage device 1 and secondary separation device 2 is communicated with the sewer pipe 302 of suspension-s treatment trough 3 respectively, and the circulating pipe of flash trapping stage device 1 and secondary separation device 2 is communicated to separated stream swash plate 301 tops of suspension-s treatment trough 3 respectively through pipeline.
Between vacuum band filter 4 and suspension-s treatment trough 3, also be provided with pipeline and be communicated with, the waste liquid in the vacuum band filter 4 is sent back in the suspension-s treatment trough 3 handle, also have additional the technology water pipe in the secondary separation device 2, the deficiency of replenishment cycles water.
Technical process of the present invention is following:
Gypsum slurries A from white clay/acetylene sludge-gypsum process desulphurization technology delivers to flash trapping stage device 1 through slurry pipe, opens and stirs, and mixing speed 60～200rpm makes gypsum slurries be in the suspension stratification state.Continue to carry gypsum slurries,, continue to increase the calcium plaster liquid measure when the gypsum slurries liquid level reaches inclination upflow tube inlet.Afterwards, through the layering situation and the interfacial position of vision slit observation gypsum slurries, suitably adjust mixing speed.When the gypsum slurries liquid level in the steel basin is 1.2～1.5 times of steel basin diameter, open the valve of outlet of this grade tripping device slurries and suspension-s outlet, the slurries outflow of taking advantage of a situation gets into respectively in suspension-s treatment trough 3 and the secondary separation device 2.
The process water that has 1/2 height in the secondary separation device 2 in advance after gypsum slurries gets into, is opened and is stirred, and opens the process water at secondary separation device place simultaneously.Other operations are with one-level tripping device 1; When the gypsum slurries liquid level in the steel basin is 1.2～1.5 times of steel basin diameter; Open the valve of this grade tripping device slurries outlets and suspension-s outlet, the slurries outflow of taking advantage of a situation gets into respectively in suspension-s treatment trough 3 and the vacuum band filter 4.
Black suspension from the suspension-s outlet gets into suspension-s treatment trough 3; In suspension-s treatment trough 3; Sewer pipe 302 is vertical to insert 3 layers at a distance from the stream baffle plates below 301, and the black suspension thing deposits in suspension-s treatment trough 3, is deposited in mud discharging mouth 303 with the form of flocs unit; Open mud discharging mouth 303, discharge black suspension thing B.Send in the two-stage tripping device as recirculated water through the clear liquor of having clarified at a distance from stream baffle plate 301 and to utilize again.
Gypsum slurries from secondary separation device 2 dewaters on vacuum band filter 4; Gypsum tailings C after dehydration is accomplished gets into gypsum stacking place; Outward transport is handled or is utilized then, and part filtrating is delivered in the suspension-s treatment trough 3 through vacuum band filter filtrate line and stores, and part filtrating effluxes.
When in the suspension-s treatment trough 3 enough clear liquors being arranged, the process water of closing the secondary separation device place, ON cycle water.When recirculated water is not enough, can opens the process water D at suspension-s treatment trough 3 places or open the process water at secondary separation device place once more.
When slurries got into the flash trapping stage device 1 from thionizer, serum density was moderate, generally need not feed recirculated water; Gypsum slurries is accomplished flash liberation in flash trapping stage device 1, when getting into secondary separation device 2, concentrate because gypsum slurries has passed through one-level; Need in secondary separation device 2, to feed continuously recirculated water or process water; Reduce the concentration of gypsum slurries, make the black suspension thing, finally discharge from the slurries outlet of secondary separation device with in the floating entering black suspension waterborne.
The black suspension substrate concentration is not high in slurries; Perhaps when black suspension thing content requirement is not high in the gypsum; Can not launch secondary separation device; Can open the recirculated water of flash trapping stage device this moment, makes recirculated water produce certain washing action, the separation efficiency of suitable increase flash trapping stage device to gypsum slurries.When recirculated water is not enough, can open the process water D at suspension-s treatment trough 3 places.In the continuous agitation of stirring rake, the black suspension thing in the gypsum constantly floats, and finally discharges from the slurries outlet.
When not opening secondary separation device 2, the outlet of the slurries of flash trapping stage device 1 directly links to each other with vacuum band filter 4 through pipeline, and gypsum dehydration is discharged.
From the gypsum slurries A of white clay-gypsum method sulfur removal technology, serum density 1.13g/cm
3, solid content 26% adopts said apparatus and technology to separate removal of impurities, and wherein the mixing speed of flash trapping stage device is 90rpm, and the mixing speed of secondary separation device is 90rpm, gained gypsum C water ratio 8.13%, purity 94.9%, black suspension thing content 0.31%.
From the gypsum slurries A of white clay-gypsum method sulfur removal technology, serum density 1.08g/cm
3, solid content 20% adopts said apparatus and technology; Only open the flash trapping stage device, while ON cycle water or process water, wherein the mixing speed of flash trapping stage device is 90rpm; Gained gypsum C water ratio 10.59%, purity 91.3%, black suspension thing content 2.03%.
From the gypsum slurries A of acetylene sludge-gypsum process desulphurization technology, serum density 1.08g/cm
3, solid content 20% adopts said apparatus and technology to separate removal of impurities, and wherein the mixing speed of flash trapping stage device is 90rpm, and the mixing speed of secondary separation device is 90rpm, gained gypsum C water ratio 9.76%, purity 92.7%, black suspension thing content 0.65%.
From the gypsum slurries A of acetylene sludge-gypsum process desulphurization technology, serum density 1.13g/cm
3, solid content 26% adopts said apparatus and technology; Only open the flash trapping stage device, while ON cycle water or process water, wherein the mixing speed of flash trapping stage device is 90rpm; Gained gypsum C water ratio 12.02%, purity 88.5%, black suspension thing content 2.85%.
Claims (10)
1. the separation knot screen of white clay/acetylene sludge-gypsum process desulphurization gypsum slurries comprises flash trapping stage device and secondary separation device, it is characterized in that,
Said flash trapping stage device and secondary separation device include:
Steel basin (102) and subsider (111) that bottom and middle part are communicated with mutually;
Stirring rake (105), slurry pipe (103) and circulating pipe (101) are set in the said steel basin (102), and said steel basin (102) bottom is provided with slurries outlets (106);
Said subsider (111) middle part is provided with suspension-s outlet (109);
The slurries outlet of said flash trapping stage device is communicated with the slurry pipe of said secondary separation device.
2. separation knot screen according to claim 1 is characterized in that, said subsider (111) and said steel basin (102) are communicated with by curve bend (108) between the bottom, and inverted vacuum breaker (107) is set in this curve bend (108).
3. separation knot screen according to claim 2; It is characterized in that; Be communicated with by inclination upflow tube (110) between the middle part of said subsider (111) and said steel basin (102); The inlet of said inclination upflow tube (110) is communicated with steel basin (102), outlet is communicated with subsider (111), and said inlet is higher than outlet.
4. separation knot screen according to claim 3; It is characterized in that; The distance of the inlet of said inclination upflow tube (110) and steel basin (102) bottom is 2/5～4/5 of steel basin (a 102) diameter, and said suspension-s outlet (109) is positioned at 10～30cm place, top of inclination upflow tube (110) outlet.
5. separation knot screen according to claim 4 is characterized in that, the diameter of propeller blade of said stirring rake (105) is 1/2～4/5 of steel basin (a 102) diameter, and the distance bottom steel basin (102) is 5～20cm.
6. separation knot screen according to claim 5; It is characterized in that; It is 5～45 ° gathering section that said subsider (111) bottom has the angle of inclination, and the height of this gatherings section is 1/10～1/5 of a subsider height, and this is communicated with on drawing section bottom and said curve bend in.
7. separation knot screen according to claim 6 is characterized in that, said slurry pipe (103) forms concentric or eccentric structure with the stir shaft of stirring rake (105), and the bottom outlet is positioned at 10～20cm place, blade top of stirring rake (105).
8. according to the described separation knot screen of the arbitrary claim of claim 1～7; It is characterized in that; Also be provided with a suspension-s treatment trough (3), said suspension-s treatment trough (3) is communicated with the suspension-s outlet of flash trapping stage device and secondary separation device and the inlet of circulating pipe through pipeline respectively.
9. the separation impurity-removing method of white clay/acetylene sludge-gypsum process desulphurization gypsum slurries is characterized in that, comprising:
(1) said gypsum slurries is introduced in the steel basin of flash trapping stage device; Stir layering, upper strata suspension-s overflow is advanced in this grade subsider, sedimentation again in subsider; The slurry reflux of subsider bottom is to steel basin; The suspension-s on top is flowed out by the suspension-s outlet, and after separation finished, the slurries of steel basin bottom were introduced in the secondary separation device and carried out secondary separation;
(2) bottom slurries in the steel basin of flash trapping stage device are introduced in the steel basin of secondary separation device, in this steel basin, fed recirculated water simultaneously, stir layering; Upper strata suspension-s overflow is advanced in this grade subsider; Sedimentation again in subsider, subsider bottom slurry reflux is to steel basin, and top suspension-s is flowed out by the suspension-s outlet; After secondary separation finishes, the bottom slurries in the steel basin through dewater gypsum.
10. separation impurity-removing method according to claim 9; It is characterized in that; To handle from the suspension-s sedimentation in the subsider of said flash trapping stage device and secondary separation device, send back to as recirculated water in the steel basin of said flash trapping stage device and secondary separation device.
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| CN201310710481.0A CN103803627B (en) | 2012-07-18 | 2012-07-18 | Separation and impurity removal method of white mud/calcium carbide residue-gypsum process based desulfurization gypsum slurry |
| CN201210248145.4A CN102765741B (en) | 2012-07-18 | 2012-07-18 | Separating and purifying device and method of white mud/carbide slag-gypsum process desulphurization gypsum slurry |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107832A (en) * | 2014-07-04 | 2014-10-22 | 鹿寨县科凯贸易有限公司 | Treatment method of white mud industrial waste of pulp mill |
| CN109467115A (en) * | 2018-12-06 | 2019-03-15 | 安徽华塑股份有限公司 | A kind of carbide slag desulfurized gypsum slurries separation, impurity removal technique |
| CN110510651A (en) * | 2019-08-13 | 2019-11-29 | 昆明川金诺化工股份有限公司 | The method and device thereof of atrament in a kind of abjection ardealite |
| CN114108352A (en) * | 2021-11-25 | 2022-03-01 | 华北电力大学（保定） | Papermaking white mud pretreatment system and method for wet desulphurization |
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| CN104107832A (en) * | 2014-07-04 | 2014-10-22 | 鹿寨县科凯贸易有限公司 | Treatment method of white mud industrial waste of pulp mill |
| CN104107832B (en) * | 2014-07-04 | 2016-09-07 | 鹿寨县科凯贸易有限公司 | A kind of processing method of pulp mill white clay industrial residue |
| CN109467115A (en) * | 2018-12-06 | 2019-03-15 | 安徽华塑股份有限公司 | A kind of carbide slag desulfurized gypsum slurries separation, impurity removal technique |
| CN109467115B (en) * | 2018-12-06 | 2021-02-23 | 安徽华塑股份有限公司 | Separation and impurity removal process for carbide slag desulfurized gypsum slurry |
| CN110510651A (en) * | 2019-08-13 | 2019-11-29 | 昆明川金诺化工股份有限公司 | The method and device thereof of atrament in a kind of abjection ardealite |
| CN114108352A (en) * | 2021-11-25 | 2022-03-01 | 华北电力大学（保定） | Papermaking white mud pretreatment system and method for wet desulphurization |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103803627B (en) | 2015-07-08 |
| CN103803627A (en) | 2014-05-21 |
| CN102765741B (en) | 2014-04-02 |
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