CN105883875A - Method for preparing dry powder calcium hydroxide from calcium carbide mud - Google Patents
Method for preparing dry powder calcium hydroxide from calcium carbide mud Download PDFInfo
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- CN105883875A CN105883875A CN201610204383.3A CN201610204383A CN105883875A CN 105883875 A CN105883875 A CN 105883875A CN 201610204383 A CN201610204383 A CN 201610204383A CN 105883875 A CN105883875 A CN 105883875A
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- carbide slurry
- blade
- desulphurizer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/02—Lime
- C04B2/04—Slaking
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/02—Lime
- C04B2/04—Slaking
- C04B2/08—Devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
Abstract
The invention relates to a method for preparing dry powder calcium hydroxide by using carbide mud, in particular to a system for preparing a dry desulfurizing agent by using the carbide mud, which comprises the following steps: (1) according to the weight ratio of quicklime with the purity of 70-80% to wet calcium carbide mud with the humidity of 30-40% of 1: 2.5-4, adding the raw materials into a system for preparing the dry desulfurizing agent by the carbide mud, and starting the system to stir uniformly; (2) the mixing time of the system for preparing the dry desulfurizing agent by the carbide mud is 3-30 minutes, the rotating speed of the rotor I is 240-640r/min, and the rotating speed of the rotor II is 240-640 r/min; (3) and discharging to obtain the dry desulfurizing agent. The method can produce dry Ca (OH)2 with the humidity controlled at 1-5%, the purity of calcium hydroxide about 70% and the particle size below 200 meshes, and has certain industrial application prospect. The relevant technical parameters are as follows: the purity of the calcium hydroxide is more than or equal to 70 percent, the humidity is less than or equal to 5 percent, the passing rate of the 150-mesh sieve is more than or equal to 94 percent, and the specific surface area is more than or equal to 15 square meters per gram. High efficiency, improved quality of finished products, simple process, low operating cost and low cost of the prepared desulfurizer, and achieves the purpose of using waste to prepare waste.
Description
Technical field
The present invention relates to a kind of carbide slurry utilizes field, and a kind of carbide slurry prepares the method for dry powder calcium hydroxide.
Background technology
Carbide slurry is the trade waste that carbide produces PVC, the every annual emissions of China there are about 20,000,000 tons, although has the carbide slurry of nearly 40% to obtain integrated treatment, and remaining is still to store up or to fill, soil and environment bearing pressure are very big, owing to the main component of carbide slurry is Ca (OH)2、Mg(OH)2Deng alkaline matter, treated carbide slurry can be as desulfurizing agent for flue gas desulfurization, with its Ca made (OH)2Dry powder can also be used for sewage treatment plant, neutralizes the free acid in waste water, is also widely used in metallurgy, chemical industry, papermaking, sugaring, building coating, thermal insulation mortar etc. industry simultaneously.
Carbide slurry is utilized to prepare Ca (OH)2Dry powder such as desulfurizing agent, can be greatly saved Calx resource, reduces material cost, reaches the purpose of waste recycling simultaneously, and recycling economy and the environmental conservation advocated for country are significant.
Carbide slurry making beating is the most highly developed for its technique of wet desulphurization, and effect is notable, is widely used at present.But carbide slurry makes dry-desulphurizer Ca (OH)2, both at home and abroad many experts and scholars are the most just having begun working on, and do a lot of work, owing to there is no professional equipment, can only use as after carbide slurry is dried again with the technique that grinding machine is levigate, the CO in this production process, in calcium hydroxide ingress of air2And carbonization, part generates CaCO3, had a strong impact on the quality of goods；And ball milling, drying power consumption are huge, causing that production cost is too high, poor product quality etc. problem, this technology investment is big simultaneously, complex process.
Crush after quick lime and carbide slurry premixing, then humidity is adjusted, then digest, use common continuous mixer, use one-level two grades stirring.Shortcoming: in mixed process, does not has the turbulent mixture of strength, and adverse current is sheared, and homogenizing, divergent function, it is impossible to effectively solve the agglomeration of carbide slurry, must use powder with quick lime, and costly, mixing and setting time are long, poor product quality and instability.
During quick lime and carbide slurry digest, the homogeneity of compound is very important to goods property of raw material and production technology.The feature of product producing process is that the compound before digestion will be through one stirring technique.Only uniform mixed material participation at water could issue raw hydration reaction and generates uniform hydrated product in digestion process, and it directly affects the quality of product.Existing blender such as forced concrete mixer, sand oar blender and Dinas brickes compound blender etc., although can realize blender mixed material is stirred, rubbing and extrusion, to carry out strengthening stirring to reach the purpose of mixing, but the mixing effect of compound being less desirable.Additionally, affected by equipment yield, existing equipment volume is relatively big, make product manufacture, install, transport etc. all brings inconvenience.Equipment is limited without special auxiliary discharging device by structure in discharge process simultaneously, makes discharge rate be substantially reduced.
Summary of the invention
The invention provides a kind of method that carbide slurry prepares dry powder calcium hydroxide, solve existing utilize carbide slurry make dry-desulphurizer Ca (OH)2During, production cost is too high, poor product quality etc. problem, simultaneously the problem such as big, the complex process of this technology investment.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of carbide slurry prepares the method for dry-desulphurizer, uses carbide slurry to prepare the system of dry-desulphurizer, comprises the following steps:
(1) according to quick lime and the ratio of weight ratio 1:2.5-4 of the wet carbide slurry of humidity 30-40% of purity 70-80%, adding raw materials into carbide slurry and prepare the system of dry-desulphurizer, open system stirs；
(2) incorporation time of the system that carbide slurry prepares dry-desulphurizer is 3 30 minutes, and the rotating speed of rotor I is 240-640r/min, and the rotating speed of rotor II is 240-640r/min；
(3) discharging, had both obtained dry-desulphurizer.
Further, a preferred embodiment of the present invention is: is introduced into pre-digestion instrument before raw material enters vertical turbulent flow blender, clears up 3-5min in advance.
Further, a preferred embodiment of the present invention is: described carbide slurry prepares the system of dry-desulphurizer, transmission measurement system is stored including carbide slurry, quick lime storage transmission measurement system, vertical turbulent flow blender and dust collecting system, described carbide slurry storage transmission measurement system includes carbide slurry storage bucket and carbide slurry weighing hopper, carbide slurry storage bucket and carbide slurry weighing hopper are connected by conveyer device, carbide slurry weighing hopper is connected with vertical turbulent flow blender by conveyer device, quick lime storage transmission measurement system includes quick lime storage silo and Quick lime metering bucket, quick lime storage silo and Quick lime metering bucket are connected by conveyer device, Quick lime metering bucket is connected with vertical turbulent flow blender by conveyer device, dust collecting system is connected with vertical turbulent flow blender.
Further, a preferred embodiment of the present invention is: also include pre-digestion instrument, described pre-digestion instrument is biaxial rneader, the entrance point of described pre-digestion instrument is connected with Quick lime metering bucket and carbide slurry weighing hopper by conveyer device, and the port of export of described pre-digestion instrument is connected with vertical turbulent flow blender.
Further, a preferred embodiment of the present invention is: described vertical turbulent flow blender includes underframe and mixing pan drive system: channel-section steel is welded as main underframe, underframe side is provided with mixing pan drive system, described drive system includes motor, motor is connected with reductor by rubbercushioned sleeve bearing coupling, reductor is connected with little gear, and little gear is connected with floating bearing；
Material mixing pan: material mixing pan is made up of upper and lower two parts cylinder and disk cover, couple with flange between two cylinders, wherein bottom barrel and bottom are equipped with easily changing abrasion-proof backing block, and bottom has discharge port and lower barrel is provided with maintenance door, equipped with Dual-layer sealing device between upper shell and disk cover；
Protection shell: the periphery of material mixing pan is provided with protection shell, two parts about its point, upper spider is fixed on top, and bottom is connected with buckling handle；
Stirring system and drive system thereof: be made up of two eccentric cantilever stirring rotators, its rotor I is main shaft, and rotor II is secondary shaft；Each rotor main will be by two vertically arranged shafts, blade, bearing block, blade location dish and V-type belt wheel composition, V-type belt wheel is fixed on upper spider crossbeam by sealing fixed mount, the self-aligning roller bearing of a center for adjusting output shaft it is respectively arranged with in the bearing block that the top of sealing fixed mount and its underpart are connected, the bottom of output shaft is provided with adpting flange, by Flange joint by incoming for torque power shaft, one protective cover is installed under the flange end of power shaft, gap between the dish of built-in adjustable lower blade location, the stay bolt preventing its upper and lower play and loosen；The lower half axial section shape of power shaft is regular hexagon, and blade location dish is arranged on the position of hexagonal shaft；Can install two blades on the dish of each blade location, and be provided with alignment pin to ensure its positional precision, blade location dish close installation from top to bottom, the bottom ring flange of axle is fixed by sunk screw, and is installed rotating vane in periphery；The revolving vane installation form of two rotors is much the same, except for the difference that the quantity of blade, specification and blade installation direction；
Discharge system.
Further, a preferred embodiment of the present invention is: described main shaft installs 13 groups of paddles altogether, can be divided into big blade, middle blade and little blade three class according to its stirring radius difference: big blade 2 groups, be distributed in 12,13 layers, and the page is installed down；Middle blade 7 groups, is distributed in 3,6,7,8,9,10,11 layers, and the page is installed upward: little blade 4 groups, is distributed in 1,2,4,5 layers, and the page is installed upward；Secondary shaft installs 11 groups of paddles altogether: being the same length, stirring radius is identical, and blade face is installed upward, is provided with spacing washer at 12,13 layers；All blades install the most at an angle to each other and blade surface cladding hard alloy abrasion-resistant layer, the third layer blade of two shafts are respectively provided with two for the band doctor blades stirring the bottom bed of material.
nullFurther，A preferred embodiment of the present invention is: the work of described discharge system is with oil cylinder or cylinder、Electric pushrod is power source，One end of oil cylinder is connected with the key seat being fixed in gantry base，The other end is connected with the key seat swung on capstan winch，Swing capstan winch bearing pin to be fixed in otic placode，Equipped with stopping means on otic placode，Otic placode is welded on bearing housing，The upper end cover of bearing housing is welded on frame lower，Upper end cover bottom is fixed with a rotating shaft，The top of bearing housing separates with upper end cover，It is suspended in below frame under the effect of bearing and bearing block，And can rotate around the axis，The key seat swinging the capstan winch other end is connected with a push-pull bar，It is connected through two perforates on bearing housing with the hinge A in the linkage case of opposite side，Hinge B is connected with connecting rod，Hinge A、B has a certain degree mutually，All it is welded on hinge sleeve，Linkage case is welded on the sidewall of bearing housing by connecting tube，Outside is welded with a support positioning beam，Downside support floor increases its intensity，Connecting rod is connected on connecting rod key seat，Connecting rod key seat is fixed on lifting axle sleeve bottom，It is provided with fairlead equipped with sliding bearing and outside inside lifting axle sleeve，Effect lower rotary shaft at inner side rolling bearing rotates，Rotating shaft is screwed on Dump gate base plate，Outside lowering or hoisting gear, it is also equipped with dirt-proof boot with baseplate underside and friction block is respectively used to seal and fricting movement，Power source and swing capstan winch are outer equipped with seal closure.
Further, a preferred embodiment of the present invention is: described auxiliary discharge system includes the scraper near lower barrel, and scraper is connected with gusset piece, and gusset piece is connected by bearing block pivoted arm, and pivoted arm is connected with oil cylinder.
Further, a preferred embodiment of the present invention is: also includes that water-adding system, described water-adding system include that priming apparatus, priming apparatus are positioned at disk cover bottom, is distributed between two shafts, and water can be directly uniformly sprayed on material by the mesh on pipeline with additive.
Beneficial effects of the present invention:
The method of the present invention can produce humid control in 1-5%, calcium hydroxide purity about 70%, particle diameter dry state Ca (OH) 2 below 200 mesh, possesses certain industrial applications prospect.Associated technical parameters is as follows: calcium hydroxide purity >=70%, humidity≤5%, and 150 mesh sieve percent of pass >=94%, specific surface area >=15/g.Efficiency is high, and the quality of finished product improves, and technique is simple, and operating cost is low, the desulfurizing agent low cost of preparation, reaches the purpose of waste recycling.
The method of the present invention utilizes vertical turbulent flow blender to carry out strongly mixing and homogenizing, can produce the calcium hydroxide product of moisture content less than 1%.In quick lime and carbide slag homogenization process, CaO is digested fully, the agglomerated particle of aqueous carbide slurry is disperseed effectively, putting thermogenetic steam makes generation thing effectively be activated, product is made to have bigger specific surface area and uniform granule, simultaneously during the hybrid reaction of short time, Ca (OH)2CO cannot be touched2And be unlikely to carbonization, thus ensure that Ca (OH)2Quality.
Vertical turbulent flow blender in the present invention uses countercurrent action and laterally flows the vertical stirrer of principle design compared with the blender of same volume, yield can improve 2～3 times, and the homogeneity of mixed material significantly improves, final material can obtain optimal mixing homogeneity, can reach PPM level.Additionally, the auxiliary discharging device that vertical turbulent flow blender is set up not only can prevent material sticks from luming, and the discharge rate of material can be improved, improve the efficiency of complete machine.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structure chart that the carbide slurry of one embodiment of the present of invention prepares the system of dry-desulphurizer；
Fig. 2 is the structure chart that the carbide slurry of an alternative embodiment of the invention prepares the system of dry-desulphurizer；
Fig. 3 is the front view of the vertical turbulent flow blender of the present invention；
Fig. 4 is the top view of the vertical turbulent flow blender of the present invention；
Fig. 5 is the left view of the vertical turbulent flow blender of the present invention；
Fig. 6 is the front view of the auxiliary discharge system of the present invention；
Fig. 7 is the top view of the auxiliary discharge system of the present invention；
Fig. 8 is stirring system and the front view of drive system thereof of the present invention；
Fig. 9 is the front view of the discharge system closed mode of the present invention；
Figure 10 is the top view of the discharge system closed mode of the present invention；
Figure 11 is the front view of the discharge system opening of the present invention；
Figure 12 is the top view of the discharge system opening of the present invention；
nullIn figure，1、Underframe，2、Motor，3、Shaft coupling，4、Reductor，5、Little gear，6、Floating bearing，7、Rotor I，8、Pipeline，9、Protection shell，10、Mixing pan，11、Scraper，12、Oil cylinder，13、Rotor II，14、Gusset piece，15、Bearing block，16、Pivoted arm，17、Upper stand，18、Disk cover，19、V-type belt wheel，20、Spacing washer，21、Output shaft，22、Self-aligning roller bearing，23、Seal fixed mount，24、Bearing block，25、Power shaft，26、Protective cover，27、Stay bolt，28、Big blade，29、Blade location dish，30、Alignment pin，31、Middle blade，32、Little blade，33、Band doctor blades，34、Rotating vane，35、Ring flange，36、Key seat，37、Oil cylinder，38、Seal closure，39、Bearing pin，40、Otic placode，41、Swing capstan winch，42、Stopping means，43、Positioner，44、Support positioning beam，45、Support floor，46、Connecting rod key seat，47、Hinge A，48、Hinge sleeve，49、Hinge B，50、Connecting rod，51、Linkage case，52、Connecting tube，53、Bearing block，54、Push-pull bar，55、Rotating shaft，56、Bearing housing，57、Upper end cover，58、Fairlead，59、Rotating shaft，60、Lifting axle sleeve，61、Dirt-proof boot，62、Friction block，63、Dump gate base plate，64、Vertical turbulent flow blender，65、Dust collecting system， 66、Carbide slurry weighing hopper，67、Conveyer device，68、Carbide slurry storage bucket，69、Quick lime metering bucket，70、Quick lime storage silo，71、Pre-digestion instrument.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment 1
nullDescribed carbide slurry used in the present invention prepares the system of dry-desulphurizer，Transmission measurement system is stored including carbide slurry、Quick lime storage transmission measurement system、Vertical turbulent flow blender 64 and dust collecting system 65，Described stone mud storage transmission measurement system includes carbide slurry storage bucket 68 and carbide slurry weighing hopper 66，Carbide slurry storage bucket 66 and carbide slurry weighing hopper 68 are connected by conveyer device 67，Carbide slurry weighing hopper 68 is connected with vertical turbulent flow blender 64 by conveyer device 67，Quick lime storage transmission measurement system includes quick lime storage silo 70 and Quick lime metering bucket 69，Quick lime storage silo 70 and Quick lime metering bucket 69 are connected by conveyer device 67，Quick lime metering bucket 69 is connected with vertical turbulent flow blender 64 by conveyer device 67，Dust collecting system 65 is connected with vertical turbulent flow blender 64.
Conveyer device Main Function is that carbide slurry and quick lime are transported to vertical turbulent flow blender, and the present invention uses belt conveyor.Other conveyer device can also be taked.Dust collecting system 65 mainly removes the dust produced in vertical turbulent flow blender work process, for using conventional dust removal equipment.
Vertical turbulent flow blender 64 includes underframe and mixing pan drive system: channel-section steel is welded as main underframe 1, underframe 1 side is provided with mixing pan 10 drive system, described drive system includes motor 2, motor 2 is connected with reductor 4 by rubbercushioned sleeve bearing coupling 3, reductor 4 is connected with little gear 5, and little gear 5 is connected with floating bearing 6.
Its transmission process is that motor 2 reaches reductor 4 by rubbercushioned sleeve bearing coupling 3, drives little gear 5 on it after speed.By little gear and the further speed change of floating bearing 6, thus the material mixing pan realizing being fixed on pivoting support with given rotating speed and is rotated clockwise.
Material mixing pan: material mixing pan 10 is made up of upper and lower two parts cylinder and disk cover 18, couples with flange between two cylinders, and wherein bottom barrel and bottom are equipped with easily changing abrasion-proof backing block, and bottom has discharge port and lower barrel is provided with the convenient maintenance of maintenance door；Equipped with Dual-layer sealing device to prevent dust from escaping between upper shell and disk cover, play sealing environment protecting effect.
Protection shell: the periphery of material mixing pan 10 is provided with protects shell 9, two parts about its point, upper spider 17 is fixed on top, and bottom is connected with buckling handle, can directly open and be easy to procuratorial work, maintenance.
Stirring system and drive system thereof: be made up of two eccentric cantilever stirring rotators, its rotor I 7 is main shaft, and rotor II 13 is secondary shaft；Each rotor main will be by two vertically arranged shafts, blade, bearing block, blade location dish and V-type belt wheel composition, V-type belt wheel 19 is fixed on upper spider 17 crossbeam by sealing fixed mount 23, the self-aligning roller bearing 22 of a center for adjusting output shaft 21 it is respectively arranged with in the bearing block 24 that the top of sealing fixed mount 23 and its underpart are connected, the bottom of output shaft 21 is provided with adpting flange, by Flange joint by incoming for torque power shaft 25, one protective cover 26 is installed under the flange end of power shaft, gap between built-in adjustable lower blade location dish 29, the stay bolt 27 preventing its upper and lower play and loosen；The lower half axial section shape of power shaft is regular hexagon, and blade location dish is arranged on the position of hexagonal shaft；Can install two blades on the dish of each blade location, and be provided with alignment pin 30 to ensure its positional precision, blade location dish close installation from top to bottom, the bottom ring flange 35 of axle is fixed by sunk screw, and is installed rotating vane 34 in periphery；The revolving vane installation form of two rotors is much the same, except for the difference that the quantity of blade, specification and blade installation direction；
Main shaft 7 installs 13 groups of paddles altogether, can be divided into big blade 28, middle blade 31 and little blade 32 3 class according to its stirring radius difference: big blade 2 groups, be distributed in 12,13 layers, and the page is installed down；Middle blade 7 groups, is distributed in 3,6,7,8,9,10,11 layers, and the page is installed upward: little blade 4 groups, is distributed in 1,2,4,5 layers, and the page is installed upward；Secondary shaft 13 installs 11 groups of paddles altogether: being the same length, stirring radius is identical, and blade face is installed upward, is provided with spacing washer 20 at 12,13 layers；All blades install the most at an angle to each other and blade surface cladding hard alloy abrasion-resistant layer, the third layer blade of two shafts are respectively provided with two for the band doctor blades 33 stirring the bottom bed of material.Blade surface cladding hard alloy abrasion-resistant layer, to improve its abrasion resistance and life-span.
Stirring transmission process is that the driven by motor small pulley thereon (specification is different) being arranged on frame both sides rotates, V-type belt wheel 19 (specification is identical) is driven to rotate through V belt translation, thus transmit torque to the power shaft 25 being connected with output shaft 21, realize two rotors to rotate by given speed difference, in order to carry out the stirring of mixed material.The most main shaft 7 rotates clockwise, and secondary shaft 13 rotates counterclockwise, in order to forms contrary mixture stream and makes material more uniform.
nullThe work of discharge system is with oil cylinder 37 or cylinder、Electric pushrod) power source，One end of oil cylinder is connected with the key seat 36 being fixed in gantry base，The other end is connected with the key seat swung on capstan winch 41，Swing capstan winch 41 bearing pin 39 to be fixed in otic placode 40，Equipped with stopping means 42 on otic placode，Otic placode 40 is welded on bearing housing 56，The upper end cover 57 of bearing housing is welded on frame lower，Upper end cover bottom is fixed with a rotating shaft 55，The top of bearing housing 56 separates with upper end cover 57，It is suspended in below frame under the effect of bearing and bearing block 53，And can 55 rotate around the shaft，The key seat swinging capstan winch 41 other end is connected with a push-pull bar 54，It is connected through two perforates on bearing housing with the hinge A47 in the linkage case 51 of opposite side，Hinge B49 is connected with connecting rod 50，Hinge A、B has a certain degree mutually，All it is welded on hinge sleeve 48，Linkage case 51 is welded on the sidewall of bearing housing by connecting tube 52，Outside is welded with a support positioning beam 44，Downside supports floor 45 increases its intensity，Connecting rod 50 is connected on connecting rod key seat 46，Connecting rod key seat 46 is fixed on lifting axle sleeve 60 bottom，It is provided with fairlead 58 equipped with sliding bearing and outside inside lifting axle sleeve 60，Effect lower rotary shaft 59 at inner side rolling bearing rotates，Effect lower rotary shaft 59 at inner side rolling bearing rotates，Dump gate base plate 63 and internal rotating shaft 59 can also be driven under the pulling force effect of connecting rod 50 together along fairlead 58 slide downward.Rotating shaft 59 is screwed on Dump gate base plate 63, is also equipped with dirt-proof boot 61 with baseplate underside and friction block 62 is respectively used to seal and fricting movement outside lowering or hoisting gear, and power source 37 and swing capstan winch 41 are outer equipped with seal closure 38.
The discharge system operation principle when enabling discharging: under the effect of oil cylinder 37 return, rotation capstan winch 41 is pulled to rotate by push rod, push-pull bar 54 is driven to pull hinge A47 to rotate, due to hinge A, B is integral installation and has certain angle, so hinge B49 can rotate therewith, thus drivening rod 50 pulls downward on connecting rod key seat 46 and moves down, and connecting rod key seat 46 and lifting axle sleeve 60, Dump gate base plate 63 is connected as a single entity, therefore can glide along fairlead 58 together in company with connecting rod key seat 46, dirt-proof boot 61 is compressed, when swinging capstan 41 and arriving limit point, Dump gate base plate 63 also drops to limit inferior point.Push rod continuation action, it is not rotated further by by now swinging capstan 41 under stopping means effect, but rotates around the rotating shaft 55 in bearing housing with otic placode 40 drivening rod mechanism case 51, discharging base plate 63 is removed, when otic placode 40 turns to certain position because of oil cylinder return, base plate turns to its limiting point.
Discharge system is in the complete operation principle at closing time of discharging: after discharging, oil cylinder 37 promotes the key seat swung in capstan 41, because the centrage of cylinder putter is the biggest with the angle swinging capstan winch bearing pin when this position, will not rotate so now swinging capstan winch, and be as otic placode 40 drivening rod mechanism case 51 together around rotating shaft 55 rotate up to support positioning beam 44 positioned by positioner 43, realize discharging base plate 63 and turn to discharge port, now the angle of push rod increases to promote swing capstan winch 41 to rotate, hinge A, B drivening rod 50 makees the inverse motion of door opening action, when capstan winch turns to stopping means 42, Dump gate base plate 63 rises to discharge port.Driving Dump gate base plate 63 to rotate together along with rotating cylinder under the effect of friction block 62, action of i.e. closing the door completes.
Auxiliary discharge system includes the scraper 11 near lower barrel, and scraper 11 is connected with gusset piece 14, and gusset piece 14 is connected by bearing block 15 pivoted arm 16, and pivoted arm 16 is connected with oil cylinder 12.
Auxiliary discharge system work process: for preventing compound from sticking on Pan Bi, it is ensured that mixture stream forms powerful vertical component, and accelerates discharging at the end of incorporation time, improves production efficiency, is provided with auxiliary discharging device in the machine side.When equipment is in stirring, scraper 11 is near lower barrel, barrel can be adhered to material strike off, when being in discharging state, oil cylinder 12 promotes pivoted arm 16, it is achieved gusset piece 14 drives scraper 11 to work while bearing block 15 turns clockwise, and material conductance enters discharge port and realizes accelerating discharging (shown in accompanying drawing three), after discharging, oil cylinder 12 return drives pivoted arm 16 to rotate counterclockwise and realizes scraper 11 return.
Water-adding system, described water-adding system includes that priming apparatus, priming apparatus are positioned at disk cover 18 bottom, is distributed between two shafts, and water can be directly uniformly sprayed on material by the mesh on pipeline 8 with additive.
Embodiment 2
Same as in Example 1, difference is: also include pre-digestion instrument, described pre-digestion instrument is biaxial rneader, the entrance point of described pre-digestion instrument is connected with Quick lime metering bucket and carbide slurry weighing hopper by conveyer device, and the port of export of described pre-digestion instrument is connected with vertical turbulent flow blender.
Embodiment 3
A kind of carbide slurry prepares the method for dry-desulphurizer, uses embodiment 1 carbide slurry to prepare the system of dry-desulphurizer, comprises the following steps:
(1) the wet carbide slurry of humidity 30-40% stores in carbide slurry storage bin hopper, it is transported to after being measured by carbide slurry weighing hopper in vertical turbulent flow blender, the quick lime of purity 70-80% is temporary in quick lime warehouse after broken, arrived the ratio of vertical turbulent flow blender quick lime and weight ratio 1:2.5-4 of wet carbide slurry by Quick lime metering bucket after being measured by conveyer device conveying, open system stirs；
(2) mixing time of vertical turbulent flow blender is 3-30 minute, and the rotating speed of rotor I is 240-640r/min, and the rotating speed of rotor II is 240-640r/min；
(3) discharging, had both obtained dry-desulphurizer.
Embodiment 4
A kind of carbide slurry prepares the method for dry powder calcium hydroxide, uses embodiment 2 carbide slurry to prepare the system of dry-desulphurizer, comprises the following steps:
(1) the wet carbide slurry of humidity 30-40% stores in carbide slurry storage bin hopper, it is transported to after being measured by carbide slurry weighing hopper in vertical turbulent flow blender, the quick lime of purity 70-80% is temporary in quick lime warehouse after broken, arrive pre-digestion instrument by conveyer device conveying after being measured by Quick lime metering bucket, clear up 3-5min in advance；
(2) feedstock transportation after clearing up in advance is to the ratio of vertical turbulent flow blender quick lime with weight ratio 1:2.5-4 of wet carbide slurry, and open system stirs；
(3) mixing time of vertical turbulent flow blender is 3-5 minute, and the rotating speed of rotor I is 240-700r/min, and the rotating speed of rotor II is 240-700r/min；
(4) discharging, had both obtained dry-desulphurizer.
Embodiment 5
A kind of carbide slurry prepares the method for dry powder calcium hydroxide, uses embodiment 2 carbide slurry to prepare the system of dry-desulphurizer, comprises the following steps:
(1) the wet carbide slurry of humidity 30-40% stores in carbide slurry storage bin hopper, it is transported to after being measured by carbide slurry weighing hopper in vertical turbulent flow blender, the quick lime of purity 70-80% is temporary in quick lime warehouse after broken, pre-digestion instrument is arrived by conveyer device conveying after being measured by Quick lime metering bucket, add the sucrose of 1wt%, the flyash of 5wt%, the lignosulfonate of 0.5wt% the most in the feed, clear up 3-5min in advance；
(2) feedstock transportation after clearing up in advance is to the ratio of vertical turbulent flow blender quick lime with weight ratio 1:2.5-4 of wet carbide slurry, and open system stirs；
(3) mixing time of vertical turbulent flow blender is 3-5 minute, and the rotating speed of rotor I is 240-700r/min, and the rotating speed of rotor II is 240-700r/min；
(4) discharging, had both obtained dry-desulphurizer.
The concrete technology parameter of embodiment 3-5 and the parameter of products obtained therefrom are shown in Table 1.
The process conditions of table 1 embodiment 4-6 and product parameters
As seen from the above table, the result of product is affected very big by the purity of quick lime, the water content of carbide slurry, proportionate relationship, selects suitable raw material and proportioning the biggest on the impact of product.
Increase pre-digesting equipment to be mixed by raw material, can effectively improve the quality of product, the especially impact on specific surface area the biggest before mixed at high speed stirs.
Add sucrose, flyash and lignosulfonate by screening and can effectively improve sieving rate and the specific surface area of product.
Embodiment 6
The Economic and Efficiency Analysis of the method for the present invention:
According to quick lime 350 yuan/ton, carbide slurry 60 yuan/ton calculating, the proportioning of carbide slurry (moisture content 35%) and quick lime is according to the ratio of 2:1, and the cost the most often producing one ton of calcium hydroxide is:
(2 × 60+1 × 350) ÷ 3=157 yuan/ton
According to every production line output 6 ton hour, the power of production line is about 150Kw, power consumption per hour 150 degree, often the 1 yuan of calculating of degree electricity, then electric cost is: 150 ÷ 6=25 yuan/ton；
The production cost of calcium hydroxide per ton is: 157+25=182 yuan/ton；
Old technique is directly to use quicklime slaking, and quick lime per ton about produces 1.1 tons of calcium hydroxide, and with about 0.6 ton of water, water is ignored, then production cost is: 350 ÷ 1.2=292 yuan/ton
According to every production line output 6 ton hour, the power of production line is about 120Kw, power consumption per hour 120 degree, often the 1 yuan of calculating of degree electricity, then electric cost is: 120 ÷ 6=20 yuan/ton；
So, the production cost of calcium hydroxide per ton is: 292+20=312 yuan/ton
So, for new technology compares older technique, often produce one ton of calcium hydroxide cost-effective about:
312 yuan/ton-182 yuan/ton=130 yuan/ton.
Cost savings 72.2%, have obvious economic benefit.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. the method that a carbide slurry prepares dry-desulphurizer, it is characterised in that: use carbide slurry to prepare dry method and take off
The system of sulfur agent, comprises the following steps:
(1) according to quick lime and weight ratio 1:2.5-4 of the wet carbide slurry of humidity 30-40% of purity 70-80%
Ratio, add raw materials into carbide slurry and prepare the system of dry-desulphurizer, open system stirs；
(2) incorporation time of the system that carbide slurry prepares dry-desulphurizer is 3 30 minutes, turning of rotor I
Speed is 240-640r/min, and the rotating speed of rotor II is 240-640r/min；
(3) discharging, had both obtained dry-desulphurizer.
The method that a kind of carbide slurry the most according to claim 1 prepares dry-desulphurizer, it is characterised in that:
Before raw material enters vertical turbulent flow blender, it is introduced into pre-digestion instrument, clears up 3-5min in advance.
The method that a kind of carbide slurry the most according to claim 1 and 2 prepares dry-desulphurizer, its feature exists
In: described carbide slurry prepares the system of dry-desulphurizer, stores transmission measurement system, calculogenesis including carbide slurry
Ash storage transmission measurement system, vertical turbulent flow blender and dust collecting system, described carbide slurry storage metering is defeated
Carbide slurry storage bucket and carbide slurry weighing hopper, carbide slurry storage bucket and carbide slurry weighing hopper pass through to send system to include
Conveyer device connects, and carbide slurry weighing hopper is connected with vertical turbulent flow blender by conveyer device, and quick lime is deposited
Storage transmission measurement system includes quick lime storage silo and Quick lime metering bucket, quick lime storage silo and quick lime meter
Batch box is connected by conveyer device, and Quick lime metering bucket is connected with vertical turbulent flow blender by conveyer device,
Dust collecting system is connected with vertical turbulent flow blender.
The method that a kind of carbide slurry the most according to claim 3 prepares dry-desulphurizer, it is characterised in that:
Also include that pre-digestion instrument, described pre-digestion instrument are biaxial rneader, entering of described pre-digestion instrument
Mouth end is connected with Quick lime metering bucket and carbide slurry weighing hopper by conveyer device, described pre-digestion instrument
The port of export is connected with vertical turbulent flow blender.
The method that a kind of carbide slurry the most according to claim 3 prepares dry-desulphurizer, it is characterised in that:
Described vertical turbulent flow blender includes underframe and mixing pan drive system: channel-section steel is welded as main underframe, the end
Frame side is provided with mixing pan drive system, and described drive system includes that motor, motor pass through elastic sleeve pin
Shaft coupling is connected with reductor, and reductor is connected with little gear, and little gear is connected with floating bearing；
Material mixing pan: material mixing pan is made up of upper and lower two parts cylinder and disk cover, uses flange between two cylinders
Coupling, wherein bottom barrel and bottom are equipped with easily changing abrasion-proof backing block, and bottom has discharge port and lower barrel sets
There is maintenance door, equipped with Dual-layer sealing device between upper shell and disk cover；
Protection shell: the periphery of material mixing pan is provided with protection shell, two parts about its point, and top is solid
Due to upper spider, bottom is connected with buckling handle；
Stirring system and drive system thereof: be made up of two eccentric cantilever stirring rotators, its rotor I is main
Shaft, rotor II is secondary shaft；Each rotor main will by two vertically arranged shafts, blade,
Bearing block, blade location dish and V-type belt wheel composition, V-type belt wheel is fixed on upper spider by sealing fixed mount
On crossbeam, in the bearing block that the top of sealing fixed mount and its underpart are connected, it is respectively arranged with one for adjusting output shaft
The self-aligning roller bearing of center, the bottom of output shaft is provided with adpting flange, will be turned by Flange joint
The incoming power shaft of square, is provided with a protective cover under the flange end of power shaft, built-in adjustable lower blade is fixed
Gap between the dish of position, prevent its upper and lower play and the stay bolt that loosens；The lower half shaft section of power shaft
Being shaped as regular hexagon, blade location dish is arranged on the position of hexagonal shaft；Can on the dish of each blade location
Installing two blades, and be provided with alignment pin to ensure its positional precision, blade location dish is the most closely pacified
Dress, the bottom ring flange of axle is fixed by sunk screw, and is installed rotating vane in periphery；Two rotors
Revolving vane installation form much the same, the except for the difference that quantity of blade, specification and blade installation direction；
Discharge system.
The method that a kind of carbide slurry the most according to claim 5 prepares dry-desulphurizer, it is characterised in that:
Described main shaft installs 13 groups of paddles altogether, according to its stirring radius difference can be divided into big blade, in
Blade and little blade three class: big blade 2 groups, be distributed in 12,13 layers, and the page installed down；Middle blade 7
Group, is distributed in 3,6,7,8,9,10,11 layers, and the page is installed upward: little blade 4 groups, be distributed in 1,
2,4,5 layers, the page is installed upward；Secondary shaft installs 11 groups of paddles altogether: be the same length,
Stirring radius is identical, and blade face is installed upward, is provided with spacing washer at 12,13 layers；All blades are installed all
At an angle to each other and blade surface is coated with hard alloy abrasion-resistant layer, and the third layer blade of two shafts is respectively provided with
Two for stirring the band doctor blades of the bottom bed of material.
The method that a kind of carbide slurry the most according to claim 5 prepares dry-desulphurizer, it is characterised in that:
The work of described discharge system is with oil cylinder or cylinder, electric pushrod as power source, and one end of oil cylinder is with solid
The key seat being scheduled in gantry base is connected, and the other end is connected with the key seat swung on capstan winch, swings capstan winch pin
Axle is fixed in otic placode, and equipped with stopping means on otic placode, otic placode is welded on bearing housing, bearing housing upper
End cap is welded on frame lower, and upper end cover bottom is fixed with a rotating shaft, and the top of bearing housing with upper end cover is
Separate, be suspended in below frame under the effect of bearing and bearing block, and can rotate around the axis, swinging
A push-pull bar it is connected with, through the company of two perforates on bearing housing Yu opposite side on the key seat of the capstan winch other end
Hinge A in linkage case is connected, and hinge B is connected with connecting rod, and hinge A, B have a certain degree mutually,
All being welded on hinge sleeve, linkage case is welded on the sidewall of bearing housing by connecting tube, and outside is welded
Having a support positioning beam, downside support floor to increase its intensity, connecting rod is connected on connecting rod key seat, connecting rod
Key seat is fixed on lifting axle sleeve bottom, is provided with fairlead equipped with sliding bearing and outside inside lifting axle sleeve,
The effect lower rotary shaft of inner side rolling bearing rotates, and rotating shaft is screwed on Dump gate base plate, at lifting dress
Put outside and baseplate underside is also equipped with dirt-proof boot and friction block is respectively used to seal and fricting movement, power source
And swing capstan winch is outer equipped with seal closure.
The method that a kind of carbide slurry the most according to claim 5 prepares dry-desulphurizer, it is characterised in that:
Described auxiliary discharge system includes the scraper near lower barrel, and scraper is connected with gusset piece, and gusset piece passes through axle
Bearing pivoted arm connects, and pivoted arm is connected with oil cylinder.
The method that a kind of carbide slurry the most according to claim 5 prepares dry-desulphurizer, it is characterised in that:
Also include that water-adding system, described water-adding system include that priming apparatus, priming apparatus are positioned at disk cover bottom, distribution
Between two shafts, water can be directly uniformly sprayed on material by the mesh on pipeline with additive.
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| CN201610204383.3A CN105883875B (en) | 2016-04-01 | 2016-04-01 | Method for preparing dry powder calcium hydroxide from calcium carbide mud |
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| CN112759308A (en) * | 2021-01-05 | 2021-05-07 | 桐乡市鑫联混凝土有限公司 | Cold-resistant concrete and preparation method thereof |
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| CN109704379A (en) * | 2019-01-26 | 2019-05-03 | 辽宁晟邦钙业有限公司 | A method of oxidation calcium product is produced using useless solid carbide slurry |
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|---|---|---|---|---|
| CN201505504U (en) * | 2009-09-17 | 2010-06-16 | 青岛海晶化工集团有限公司 | Desulfurizing agent conveyer device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201505504U (en) * | 2009-09-17 | 2010-06-16 | 青岛海晶化工集团有限公司 | Desulfurizing agent conveyer device |
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| 贾汉忠等: "电石渣／生石灰复合物流动性及脱硫性能", 《化工进展》 * |
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| CN112759308A (en) * | 2021-01-05 | 2021-05-07 | 桐乡市鑫联混凝土有限公司 | Cold-resistant concrete and preparation method thereof |
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