CN100485263C - Method and device for producing coal slurry - Google Patents
Method and device for producing coal slurry Download PDFInfo
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- CN100485263C CN100485263C CNB2007100991485A CN200710099148A CN100485263C CN 100485263 C CN100485263 C CN 100485263C CN B2007100991485 A CNB2007100991485 A CN B2007100991485A CN 200710099148 A CN200710099148 A CN 200710099148A CN 100485263 C CN100485263 C CN 100485263C
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Abstract
A device used for making coal-water fluid is prepared for setting material feeding tank at front end of said device, connecting top of coal-water fluid making tank to bottom of material feeding tank and connecting coal-water fluid dynamic and quick mixer with coal-water fluid making tank. Its method for making oil coal-water fluid or water coal-water fluid is also disclosed.
Description
Technical field
The present invention relates to a kind of method of coal slurry and device that this method is used of preparing, relate in particular to the preparation method and the device of a kind of coal or water-coal-slurry.
Background technology
Solid-liquid two-phase mixed method commonly used generally is that two kinds of materials are added to respectively in the agitator, mixes by mechanical agitation or bubbling stirring method then.For the thinner powder of granularity, particularly granularity " parcel " phenomenon very easily occurs less than 100 purpose powders when mixing with liquid, be that fine powder is when mixing with liquid, liquid only makes powder piece surface dissolution, can not be impregnated into the inside of powder, thereby producing the secondary aggregation grain of powder, is very difficult and the secondary aggregation grain that has produced will be distributed in the liquid again.In the middle of practical operation, granularity joined less than 100 purpose coal dusts mix often regular meeting in the solvent naphtha with certain viscosity above-mentioned " secondary aggregation grain " phenomenon takes place, do not reach the well-mixed purpose of solid-liquid.
In order to address the above problem, Chinese patent ZL200310101928.0 discloses the device and the production method thereof of a kind of production water-coal-slurry or coal, be that the coal of particle diameter 0.1～2cm is sent in the mixing arrangement by charging aperture, be ground into the coal dust of granularity under multiple shock wave that coal slurry produces flowing through rotor and orifice plate and the wall pressure effect smaller or equal to 200 orders (being that diameter is smaller or equal to 70 microns), again by nozzle layer particularly end layer spray into 30～60% water or oil or additive by water-coal-slurry or coal gross weight, water-coal-slurry that obtains mixing or coal.Because the rotating speed of its rotor is 2000～5000 rev/mins, wearing and tearing to rotor when preparing coal slurry with high rotational speed are bigger, and coal powder size is when the 200 order left and right sides, only the nozzle injection solvent by last one deck mixes with coal dust, incorporation time is too short, be difficult to overcome the parcel phenomenon that coal dust takes place in course of dissolution, still can't evenly mix fully.
Chinese patent application 03164908.4 discloses a kind of powder of vibration source and mixing stirring device of liquid of having, and it is to drive the paddle rotation by the shaft that is connected on the vibration source, and powder and liquid in the container are fully mixed.But, because the powder charge door of this mixing arrangement is to be connected with the powder introducing port by valve, liquid medium produces splashing of fine drop under the paddle effect, easily cause powder to form powder ball at the introducing port place, work long hours, import is stopped up, even import is not blocked, formed powder ball also can peel off under the effect of mixing arrangement self vibration, the powder ball that forms will be disperseed mix just very difficult again.
Summary of the invention
Main purpose of the present invention is to be, a kind of device for preparing coal or water-coal-slurry is provided, and uses this device to prepare the method for coal and water-coal-slurry.Apparatus and method of the present invention are used to satisfy the production of coal liquefaction reaction coal slurry, can prepare qualified coal slurry and with low cost at short notice.
To achieve these goals, the device of preparation coal slurry of the present invention is such:
A kind of coal slurry preparation facilities comprises the feed pot that is positioned at whole device front end, the coal slurry preparation jar that the top is connected with described feed pot bottom and a dynamic coal slurry positive mixer that links to each other with described coal slurry preparation jar:
Be provided with the paddle that is used to mix coal slurry within the described coal slurry preparation jar, one end of coal slurry preparation jar is provided with the coal dust charge pipe that communicates with described feed pot and is used to add the shower of solvent naphtha or water, the sidewall of described coal slurry preparation jar is provided with connector, and the bottom of described coal slurry preparation jar is provided with circulation port;
Described dynamic coal slurry positive mixer comprises and is used for preparing tank connected inlet and outlet with described coal slurry, thereby and be used to make fluid to be subjected to rotor and stator that mechanical agitation reaches rapid mixing coal slurry purpose, described inlet is connected by pipeline with described circulation port, described outlet links to each other by pipeline with described connector, and described rotor and stator are provided with tooth.
As preferred implementation, described coal slurry preparation jar is connected with and can makes it keep the apparatus for vacuum producing of vacuum state.
As preferred implementation, be provided with the steam companions that is used to heat coal slurry within the described coal slurry preparation jar.
As preferred implementation, the charge door of described coal dust charge pipe is lower than the spout of described shower.
As preferred implementation, the spout of described shower is interlaced.
As preferred implementation, described connector is positioned at paddle above position or equal with it position.
As preferred implementation, the tooth of described stator is a helical teeth, and this helical teeth becomes 45～80 degree with the normal plane at the rotating shaft place of stator, and the tooth of rotor is a straight-tooth.
In order to realize goal of the invention, the method for preparing coal of the present invention is such:
A kind of method for preparing coal comprises the steps:
A, in coal slurry preparation jar, add 80～160 ℃ solvent naphtha of only about half of consumption, by the addition of solvent oil tank electronic-weighing solvent naphtha or control the addition of solvent naphtha by measuring pump by the coal-water fluid concentration of required configuration;
B, unlatching paddle, in the middle of the overall process of preparation coal slurry, described paddle keeps stirring always;
C, in steam companions, feed 100～180 ℃ Steam Heating solvent naphtha, and then in coal slurry preparation jar the adding catalyst slurry;
D, open the circulation port of coal slurry preparation jar, solvent naphtha, catalyst slurry are fully mixed by acting in the coal slurry preparation jar of dynamic coal slurry positive mixer with coal dust;
E, the coal dust that preprepared is stored in the feed pot are added in the described coal slurry preparation jar by screw feeder or rotation charging valve continuous and quantitative, rotating speed by control variable frequency adjustment feeder can be controlled feeding quantity, when adding coal dust, add remaining solvent naphtha consumption once more, under the acting in conjunction of dynamic coal slurry positive mixer and paddle, through 5～15 minutes, coal mixing uniformly finished.
As preferred implementation, after step D, open the apparatus for vacuum producing that links to each other with coal slurry preparation jar, air pressure is not higher than 0.015MPa, guarantees that the coal slurry of preparing does not contain gas.
As preferred implementation, in step B, the mixing speed of paddle is 50～200rpm.
As preferred implementation, in step C, add concentration and be 25%～50%, temperature is 60～120 ℃ catalyst slurry.
In order to realize goal of the invention, the method for preparing water-coal-slurry of the present invention is such:
A kind of method for preparing water-coal-slurry comprises the steps:
A, in coal slurry preparation jar, add entry, the addition by electronic-weighing control water or by the addition of measuring pump control water;
B, unlatching paddle, in the middle of the overall process of preparation coal slurry, described paddle keeps stirring always;
C, open the circulation port of coal slurry preparation jar, water, catalyst slurry are fully mixed by acting in the coal slurry preparation jar of dynamic coal slurry positive mixer with coal dust;
D, the coal dust that preprepared is stored in the feed pot are added in the described coal slurry preparation jar by screw feeder or rotation charging valve continuous and quantitative, rotating speed by control variable frequency adjustment feeder can be controlled feeding quantity, coal-water fluid concentration by required configuration when adding coal dust adds an amount of water, under the acting in conjunction of dynamic coal slurry positive mixer and paddle, through 5～15 minutes, water-coal-slurry mixing uniformly finished.
As preferred implementation, after step C, open the apparatus for vacuum producing that links to each other with coal slurry preparation jar, air pressure is not higher than 0.015MPa, guarantees that the coal slurry of preparing does not contain gas.
As preferred implementation, in step B, the mixing speed of paddle is 50～200rpm.
Effect of the present invention is: the method and apparatus of preparation coal slurry of the present invention can be produced qualified coal slurry at short notice, fully solve the technical problem that the small grain size coal particles can not be dissolved in water-coal-slurry or coal fully, and the apparatus structure of preparation coal slurry of the present invention is simple, with low cost, the method strong operability of mixing coal slurry of the present invention and can realize significant coal slurry mixed effect at short notice.
Description of drawings
Below, will be described in more detail the specific embodiment of the present invention in conjunction with the accompanying drawings, wherein:
Fig. 1 is the overall structure schematic diagram of the equipment of preparation coal slurry of the present invention;
Fig. 2 is the cutaway view of dynamic coal slurry positive mixer;
Fig. 3 a is the side view of the stator of dynamic coal slurry positive mixer;
Fig. 3 b is the front view of the stator of dynamic coal slurry positive mixer;
Fig. 4 a is the side view of the rotor of dynamic coal slurry positive mixer;
Fig. 4 b is the front view of the rotor of dynamic coal slurry positive mixer;
Fig. 5 is the vertical view of some teeth of the stator of dynamic coal slurry positive mixer, shows the tooth on the stator and the angle of stator body.
The specific embodiment
For convenience of description, components identical is represented with identical Reference numeral among the following embodiment.
Coal slurry preparation facilities 1 of the present invention comprises that the feed pot 10 that is positioned at whole device front end, the coal slurry that the top is connected with described feed pot 10 bottoms prepare jar 12 and prepare jar 12 dynamic coal slurry positive mixers 14 that link to each other with described coal slurry, connect by pipeline between each parts of coal slurry preparation facilities 1.
Described feed pot 10 preferred employing funnel-form designs, the discharging opening of its bottom connects described coal slurry preparation jars 12 by pipeline, and the coal dust that the feed pot 10 of funnel-form design helps is wherein flowing under the effect of the effect of self gravitation and draught head among the described coal slurry preparation jars 12 automatically.
Be provided with steam companions 120 (the preparation water-coal-slurry does not need to use this steam companions) that is used to heat coal and the paddle 126 that is used for fully mixing coal slurry within the described coal slurry preparation jar 12, the top of coal slurry preparation jar 12 is provided with the coal dust charge pipe 124 that communicates with described feed pot 10 and is used to add the shower 122 of solvent naphtha or water, and the circulation port 128 that is located at described coal slurry preparation jar 12 bottoms.
Preferably, the charge door of described coal dust charge pipe 124 is lower than the spout of described shower 122.Like this She Ji reason be because: the coal slurry micelle can stick to around the mouth of pipe of described coal dust charge pipe 124, rinse out as untimely, can the be long-pending more big more formation coal dust of coal slurry micelle group, coal dust group falls under gravity into described coal slurry preparation jar 12, this coal dust group that falls into is difficult to disperse again, therefore shower 122 is designed to have the structure of washing capacity, avoids forming coal dust group.The mouth of pipe of described coal dust charge pipe 124 is designed to horn mouth, is convenient to solvent naphtha or water spray on the outer wall of described coal dust charge pipe 124, is convenient to be washed down because of the coal slurry micelle that oil gas sticks on the coal dust charge pipe 124.The sidewall of described coal slurry preparation jars 12 is provided with and is used for and connector that dynamic coal slurry positive mixer 14 links to each other.
Thereby the power transmission shaft 148 that described dynamic coal slurry positive mixer 14 comprises the motor (not shown), link to each other by shaft coupling and motor, be used for and described coal slurry preparation jar 12 interfaces that are connected 140, be used to make fluid be subjected to mechanical agitation rotor 142 and the stator 144 that reaches rapid mixing coal slurry purpose, the hybrid chamber 146 that is used for temporarily holding coal slurry; Described rotor 142 and stator 144 are provided with tooth.
Described hybrid chamber 146 has material inlet and material outlet, and stator 144 is installed on the end cap of material inlet, rotor 142 be installed in power transmission shaft 148 1 ends and with stator 144 embedding mutually.Under the centrifugal action that high speed rotor rotated 142 produces, material is at two charging apertures of end cap, simultaneously from axial suction hybrid chamber 146.From radially get rid of the gap between stator 144, the rotor 142, the gap between rotor 142 and the stator 144 is 0.5-3mm to powerful centrifugal force, is preferably 1-2mm with material.Make that material is subjected to strong machinery and fluid power shearing, centrifugal extruding, liquid layer friction in the narrow gap of stator 144, rotor 142, bump is torn and comprehensive function such as turbulent flow, thereby make immiscible solid phase, liquid phase under the effect of corresponding maturation process, material is tentatively mixed.
Described interface 140 comprises makes the inlet 1400 of coal slurry from the described coal slurry preparation jar described dynamic coal slurry positive mixer 14 of 12 inflows, coal slurry is expelled back into the outlet 1402 of described coal slurry preparation jar 12 from described dynamic coal slurry positive mixer 14.Described inlet 1400 is connected with the circulation port 128 of described coal slurry preparation jar 12 bottoms, and described outlet 1402 is positioned at the top of paddle 126 or equal with it, so that mixture can fully be stirred.
In the process of preparation coal slurry, coal dust, catalyst slurry, solvent naphtha or water are sucked by the inlet 1400 of high speed rotor rotated 142 from mixer 14 by the circulation port 128 of described coal slurry preparation jar 12 bottoms, enter described hybrid chamber 146 by gap between stator 144 and the rotor 142 and the hole on the stator 144 then, get back within the described coal slurry preparation jar 12 from exporting 1402 through hybrid chamber 146 again.About the structure of dynamic coal slurry positive mixer 14 has been known to those of ordinary skills, can be referring to Chinese patent 200420005799.5, and this paper repeats no more.142 pairs of fluids that flow through of high speed rotor rotated have carried out high-speed cutting, and direction of flow and fluid passage area are had greatly changed, and cause fluid to be subjected to powerful mechanical agitation and fluid power shear action, thereby reach the purpose of rapid mixing.
But if the coal slurry that the rotor and the stator of disclosed in the Chinese patent 200420005799.5 " the online reactor of DCL/Direct coal liquefaction catalyst " is directly used in high concentration mixes, the alluvial that can produce coal dust in the runner of stator is stopped up.Therefore, as shown in Figure 4, the present invention makes to be fit to the structure of the mixing head part of described dynamic coal slurry positive mixer 14 into structure that the high concentration coal slurry mixes.
The tooth of described stator 144 is helical teeth 1440, be the angled α of normal plane at the rotating shaft place of helical teeth 1440 and stator 144, angle is 45～80 degree, is preferably 68～75 degree, the tooth of rotor 142 is straight-tooth 1420, and promptly straight-tooth 1420 is vertical with the plane, rotating shaft place of rotor 142.
Preferably, described coal slurry preparation jar 12 is connected with the apparatus for vacuum producing (not shown), make described coal slurry prepare jar 12 interior air pressure and be not higher than 0.015MPa, prepare the environment that has in the jar 12 near vacuum, thereby make that the coal slurry of circulation can be not gas-entrained in coal slurry preparation jar 12 to guarantee coal slurry.
Because coal slurry has stronger abrasive action to the device of rotation at a high speed, preferably, at rotor 142 and stator 144 surface overlaying carbide alloy, and does grinding and polishing, make rotor 142 and stator 144 have good wearability and long service life.Main shaft seal in the hybrid chamber 146 can adopt modes such as packing seal, single end face or double mechanical seal.For the rotor 142 that makes mixer 14 has the ability of carrying coal slurry, the angle of the blade of described rotor 142 is preferably 20 °～45 °, and the pressure of exporting coal slurry like this can satisfy the requirement of related process.
The adding mode of described solvent naphtha or water is added by solvent oil tank/water pot or measuring pump, the pressure of oil tank/water pot is controlled at 0.1～0.3MPa or pumping pressure reaches 0.3MPa, added solvent naphtha or water are sprayed by the aperture on the shower 122, shower 122 adopts the interlaced structural design of liquid that makes adjacent two apertures ejection, this design can form " cascade " together on the inwall of described coal slurry preparation jar 12, the coal slurry that sticks on the tank skin because of paddle 126 effects can be washed away totally, avoid behind the coal slurry wall built-up because of intermittently operated, after the liquid level of coal slurry preparation jar 12 reduces, on tank skin under the baking of vapours, form the coal dirt, the coal dirt is difficult for being dissolved at short notice in the liquid when charging once more, causes the coal slurry preparation facilities 1 can not normal running.
The method for preparing coal of the present invention is such:
1, the coal dust particulate of preprepared smaller or equal to 200 orders (promptly smaller or equal to 70 microns) is stored in the feed pot 10, the feeding quantity of coal dust is recorded by electronic weighing instrument;
2,80～160 ℃ the solvent naphtha that adds only about half of consumption by the coal-water fluid concentration of required configuration in coal slurry preparation jars 12 is by the addition of solvent oil tank electronic-weighing solvent naphtha or controlled the addition of solvent naphtha by measuring pump;
3, open paddle 126, mixing speed is 50～200rpm, preferred 50～120rpm, and in the middle of the overall process of preparation coal slurry, described paddle 126 keeps stirring always;
4, in steam companions 120, feed 100～180 ℃ Steam Heating coal slurry, and then adding concentration is 25%～50% in coal slurry preparation jars 12, temperature is 60～120 ℃ catalyst slurry;
5, open the circulation port 128 of coal slurry preparation jar 12, make solvent naphtha, catalyst slurry prepare jar 12 interior fully mixing by the coal slurry that acts on of dynamic coal slurry positive mixer 14;
6, unlatching and coal slurry preparation jar 12 apparatus for vacuum producing that link to each other, coal slurry preparation jar 12 interior pressure maintain and are not higher than 0.015MPa, guarantee that the coal slurry of preparing does not contain gas;
7, the coal dust that is stored in the described feed pot 10 is added in the described coal slurry preparation jars 12 by the device continuous and quantitative of screw feeder or rotation charging valve or similar with it reinforced function, can control what of feeding quantity by the rotating speed of control variable frequency adjustment feeder, coal-water fluid concentration by required configuration when adding coal dust continues to add remaining solvent naphtha, solvent naphtha, catalyst slurry fully mixes by acting in the coal slurry preparation jar 12 of dynamic coal slurry positive mixer 14 with coal dust, under the acting in conjunction of dynamic coal slurry positive mixer 14 and paddle 126, through 5～15 minutes, the coal mixing that does not contain gas uniformly finished.
The method for preparing water-coal-slurry of the present invention is such:
1, the coal dust particulate of preprepared smaller or equal to 200 orders (promptly smaller or equal to 70 microns) is stored in the feed pot 10, the feeding quantity of coal dust is recorded by electronic weighing instrument;
2, the water that in coal slurry preparation jar 12, adds only about half of consumption by the coal-water fluid concentration of required configuration, the addition of water can be by the water pot electronic-weighing or by measuring pump control conveying capacity;
3, open paddle 126, mixing speed is 50～200rpm, preferred 50～120rpm, and in the middle of the overall process of preparation coal slurry, described paddle 126 keeps stirring always;
4, open the circulation port 128 of coal slurry preparation jar 12, start dynamic coal slurry positive mixer 14;
5, unlatching and coal slurry preparation jar 12 apparatus for vacuum producing that link to each other, coal slurry preparation jar 12 interior pressure maintain and are not higher than 0.015MPa, guarantee that the coal slurry of preparing does not contain gas;
6, the coal dust that is stored in the described feed pot 10 is added in the described coal slurry preparation jars 12 by the device continuous and quantitative of screw feeder or rotation charging valve or similar with it reinforced function, can control what of feeding quantity by the rotating speed of control variable frequency adjustment feeder, when adding coal dust by required remaining water; Water and coal dust fully mix by acting in the coal slurry preparation jars 12 of dynamic coal slurry positive mixer 14, and under the acting in conjunction of dynamically coal slurry positive mixer 14 and paddle 126, through 5～15 minutes, the uniform water-coal-slurry mixing that does not contain gas finished.
Further specify the present invention below in conjunction with specific embodiments.
Embodiment 1:
The 200 order coal dust particulates that prepared are stored in the feed pot 10, the coal slurry preparation jar 12 interior solvent naphtha 400kg that add 80～160 ℃ earlier, solvent naphtha is by solvent oil tank electronic-weighing control addition, open paddle 126, mixing speed 50rpm, paddle 126 keeps running status always in the device running.Feed the coal slurries that 100～180 ℃ Steam Heating add in the described steam companions 120, adding concentration is 30% in coal slurry preparation jars 12, temperature is 100 ℃ catalyst slurry 821.14kg.Open the circulation port 128 of coal slurry preparation jar 12, start dynamic coal slurry positive mixer 14, make oil, catalyst mix to be incorporated in the coal slurries preparation jar 12 and circulate by dynamic coal slurry positive mixer 14.Unlatching and coal slurry preparation jar 12 apparatus for vacuum producing that link to each other, pressure maintains 0.015MPa.Add the 946.59kg coal dust, coal dust is added in the coal slurry preparation jar 12 continuously by screw feeder, the feeding quantity of coal dust is recorded by electronic weighing instrument, charging rate is by the rotating speed control of variable frequency adjustment feeder, coal-water fluid concentration by the required configuration of technology when adding coal dust adds remaining solvent oil mass 400.07kg, sulphur 12.6kg.Coal dust, sulphur, solvent naphtha, catalyst slurry dynamic coal slurry positive mixer 14, pipeline circulation and jar under the acting in conjunction of stirring, through 15 minutes, the coal of gas-free 45% concentration prepared and finishes uniformly.
Embodiment 2
The 200 order coal dust particulates that prepared are stored in the feed pot 10, the coal slurry preparation jar 12 interior solvent naphtha 234.54kg that add earlier, solvent naphtha is by solvent oil tank electronic-weighing control addition, open paddle 126, mixing speed 120rpm, paddle 126 is held open state always in the device running.Feed the coal slurries that 100～180 ℃ Steam Heating add in the described steam companions 120, adding concentration is 30% in coal slurry preparation jars 12, temperature is 100 ℃ catalyst slurry 595.40kg.Open the circulation port 128 of coal slurry preparation jar 12, start dynamic coal slurry positive mixer 14, make oil, catalyst slurry by dynamic coal slurry positive mixer 14 rapid mixing and constantly circulation in coal slurry preparation jar 12.Unlatching and coal slurry preparation jar 12 apparatus for vacuum producing that link to each other, air pressure maintains 0.015MPa.Add the 686.36kg coal dust, coal dust is added in the coal slurry preparation jar 12 continuously by screw feeder, and the feeding quantity of coal dust is recorded by electronic weighing instrument, and charging rate is by the rotating speed control of variable frequency adjustment feeder.Coal-water fluid concentration by the required configuration of technology when adding coal dust adds remaining solvent oil mass 234.55kg, sulphur 9.14kg.Coal dust, sulphur, solvent naphtha, catalyst slurry dynamic coal slurry positive mixer 14, pipeline circulation and jar under the acting in conjunction of stirring, through 10 minutes, the coal of gas-free 48% concentration prepared and finishes uniformly.
Embodiment 3:
The 200 order coal dust particulates that prepared are stored in feed pot 10, add entry 560kg earlier in the coal slurry preparation jar 12, water is controlled addition by electronic-weighing, opens paddle 126, mixing speed 150rpm, mechanical agitation is held open state always in the device running.Open the circulation port 128 of coal slurry preparation jar 12 bottoms, start dynamic coal slurry positive mixer 14, make water pass through circulation port 128 circulations of dynamic coal slurry positive mixer 14 and coal slurry preparation jar 12.Unlatching and coal slurry preparation jar 12 vacuum systems that link to each other, air pressure remains on 0.015MPa.Add the 1040kg coal dust, the feeding quantity of coal dust is recorded by electronic weighing instrument, coal dust is added in the coal slurry preparation jar 12 continuously by screw feeder, feeding quantity speed is by the rotating speed control of variable frequency adjustment feeder, and the coal-water fluid concentration by the required configuration of technology when adding coal dust adds remaining water yield 1000kg.Coal dust, water dynamic coal slurry positive mixer 14, pipeline circulation and jar under the acting in conjunction of stirring, through 8 minutes, the water-coal-slurry of gas-free 40% concentration prepared and finishes uniformly.
The advantage of the method and apparatus of preparation coal slurry of the present invention is as follows:
1, technological process is simple, can effectively reduce incorporation time, the process that is mixed with of coal slurry Reach semicontinuous operation.
2, the dynamic coal slurry positive mixer 14 of the present invention's use has high shear force, can make powder Body and liquid fully mixed in the short period, and difficult generation generally powder mixes with liquid The powder ball that Shi Jiyi produces.
3, shower 122 has better solved the scale problems of coal slurry preparation tank 12 inwalls, has guaranteed The normal use of the device in downstream.
4, the mouth of pipe of described powder coal charge pipe 124 is designed to horn mouth, has washed preferably oil gas Solidify the coal slurry micelle of formation at charge door, prevent that solid feed inlet is blocked.
The method and apparatus of preparation coal slurry of the present invention can be prepared qualified coal slurry at short notice, Fully solve the technical problem that the small grain size coal particles can not be dissolved in water-coal-slurry or coal fully, And the apparatus structure of mixing coal slurry of the present invention is simple, and is with low cost, mixing coal slurry of the present invention Method also be convenient to implement.
Claims (14)
1. a coal slurry preparation facilities comprises the feed pot that is positioned at whole device front end, the coal slurry preparation jar that the top is connected with described feed pot bottom and a dynamic coal slurry positive mixer that links to each other with described coal slurry preparation jar, it is characterized in that:
Be provided with the paddle that is used to mix coal slurry within the described coal slurry preparation jar, one end of coal slurry preparation jar is provided with the coal dust charge pipe that communicates with described feed pot and is used to add the shower of solvent naphtha or water, the sidewall of described coal slurry preparation jar is provided with connector, and the bottom of described coal slurry preparation jar is provided with circulation port;
Described dynamic coal slurry positive mixer comprises and is used for preparing tank connected inlet and outlet with described coal slurry, thereby and be used to make fluid to be subjected to rotor and stator that mechanical agitation reaches rapid mixing coal slurry purpose, described inlet is connected by pipeline with described circulation port, described outlet links to each other by pipeline with described connector, and described rotor and stator are provided with tooth.
2. coal slurry preparation facilities according to claim 1 is characterized in that: described coal slurry preparation jar is connected with and can makes it keep the apparatus for vacuum producing of vacuum state.
3. coal slurry preparation facilities according to claim 1 is characterized in that: be provided with the steam companions that is used to heat coal slurry within the described coal slurry preparation jar.
4. according to any described coal slurry preparation facilities of claim 1-3, it is characterized in that: the charge door of described coal dust charge pipe is lower than the spout of described shower.
5. coal slurry preparation facilities according to claim 4 is characterized in that: the spout of described shower is interlaced.
6. coal slurry preparation facilities according to claim 5 is characterized in that: described connector is positioned at paddle above position or equal with it position.
7. according to claim 5 or 6 described coal slurry preparation facilities, it is characterized in that: the tooth of described stator is a helical teeth, and this helical teeth becomes 45～80 degree with the normal plane at the rotating shaft place of stator, and the tooth of rotor is a straight-tooth.
8. method for preparing coal, it is characterized in that: this method comprises the steps:
A, in coal slurry preparation jar, add 80～160 ℃ solvent naphtha of only about half of consumption, by the addition of solvent oil tank electronic-weighing solvent naphtha or control the addition of solvent naphtha by measuring pump by the coal-water fluid concentration of required configuration;
B, unlatching paddle, in the middle of the overall process of preparation coal slurry, described paddle keeps stirring always;
C, in steam companions, feed 100～180 ℃ Steam Heating solvent naphtha, and then in coal slurry preparation jar the adding catalyst slurry;
D, open the circulation port of coal slurry preparation jar, solvent naphtha, catalyst slurry are fully mixed by acting in the coal slurry preparation jar of dynamic coal slurry positive mixer with coal dust;
E, the coal dust that preprepared is stored in the feed pot are added in the described coal slurry preparation jar by screw feeder or rotation charging valve continuous and quantitative, rotating speed by control variable frequency adjustment feeder can be controlled feeding quantity, when adding coal dust, add remaining solvent naphtha consumption once more, under the acting in conjunction of dynamic coal slurry positive mixer and paddle, through 5～15 minutes, coal mixing uniformly finished.
9. the method for preparing coal according to claim 8 is characterized in that: after step D, open the apparatus for vacuum producing that links to each other with coal slurry preparation jar, air pressure is not higher than 0.015MPa, guarantees that the coal slurry of preparing does not contain gas.
10. the method for preparing coal according to claim 9 is characterized in that: in step B, the mixing speed of paddle is 50～200rpm.
11., it is characterized in that: in step C, add concentration and be 25%～50%, temperature is 60～120 ℃ catalyst slurry according to claim 9 or the 10 described methods that prepare coal.
12. a method for preparing water-coal-slurry is characterized in that: this method comprises the steps:
A, in coal slurry preparation jar, add entry, the addition by electronic-weighing control water or by the addition of measuring pump control water;
B, unlatching paddle, in the middle of the overall process of preparation coal slurry, described paddle keeps stirring always;
C, open the circulation port of coal slurry preparation jar, water, catalyst slurry are fully mixed by acting in the coal slurry preparation jar of dynamic coal slurry positive mixer with coal dust;
D, the coal dust that preprepared is stored in the feed pot are added in the described coal slurry preparation jar by screw feeder or rotation charging valve continuous and quantitative, rotating speed by control variable frequency adjustment feeder can be controlled feeding quantity, coal-water fluid concentration by required configuration when adding coal dust adds an amount of water, under the acting in conjunction of dynamic coal slurry positive mixer and paddle, through 5～15 minutes, water-coal-slurry mixing uniformly finished.
13. the method for preparing water-coal-slurry according to claim 12 is characterized in that: after step C, open the apparatus for vacuum producing that links to each other with coal slurry preparation jar, air pressure is not higher than 0.015MPa, guarantees that the coal slurry of preparing does not contain gas.
14. the method for preparing water-coal-slurry according to claim 13 is characterized in that: in step B, the mixing speed of paddle is 50～200rpm.
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| CNB2007100991485A CN100485263C (en) | 2007-05-14 | 2007-05-14 | Method and device for producing coal slurry |
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| CN102796575A (en) * | 2011-05-26 | 2012-11-28 | 通用电气公司 | Device, system and method for preparing coal-water-slurry |
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| CN101543737B (en) * | 2008-03-27 | 2012-07-18 | 深圳市神威得群能源科技发展有限公司 | Automatic quantitative control coal-water oil slurry mixer |
| CN102128270A (en) * | 2011-03-16 | 2011-07-20 | 丰城向华水基科学技术有限公司 | Differential pressure sealing leakage prevention method |
| CN103965981B (en) | 2013-01-31 | 2016-05-25 | 通用电气公司 | The apparatus and method of preparation water-coal-slurry |
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| CN102796575A (en) * | 2011-05-26 | 2012-11-28 | 通用电气公司 | Device, system and method for preparing coal-water-slurry |
| CN102796575B (en) * | 2011-05-26 | 2015-07-22 | 通用电气公司 | Device, system and method for preparing coal-water-slurry |
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| CN101050863A (en) | 2007-10-10 |
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