CN205205088U - Production system of high concentration coal slurry is joined in marriage to discontinuous fraction - Google Patents
Production system of high concentration coal slurry is joined in marriage to discontinuous fraction Download PDFInfo
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- CN205205088U CN205205088U CN201521009052.1U CN201521009052U CN205205088U CN 205205088 U CN205205088 U CN 205205088U CN 201521009052 U CN201521009052 U CN 201521009052U CN 205205088 U CN205205088 U CN 205205088U
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Abstract
The utility model relates to a production system of high concentration coal slurry is joined in marriage to discontinuous fraction, its characterized in that: it includes a coal storage bin, a meticulous broken pure quick -witted feed inlet is connected through a dispenser to its discharge gate, the feed inlet in buggy storehouse in the middle of is connected to the discharge gate of meticulous breaker, the feed inlet of a buggy grader is connected to the discharge gate in middle buggy storehouse through another dispenser, the feed inlet in middlings buffering storehouse is connected to the first discharge gate of buggy grader, a feed inlet of joining in marriage the thick liquid jar is connected to the discharge gate in middlings buffering storehouse, the first feed inlet of a buggy entrapment tower is connected to the second discharge gate of buggy grader, the feed inlet of horizontal super grinder is connected to the first discharge gate of buggy entrapment tower through a pump for mortar transmission, the feed inlet of a screened stock jar is connected to the discharge gate of horizontal super grinder, the discharge gate of screened stock jar is connected with the feed inlet of joining in marriage the thick liquid jar, be provided with a second feed inlet that is used for introducing the mixture of additive and water on the buggy entrapment tower.
Description
Technical field
The utility model relates to a kind of production system of coal water slurry, particularly about a kind of production system of discrete particle size grating high-concentration coal-water slurry.
Background technology
The coal based fluid fuel that coal water slurry is made up of coal, water and additive and gasified raw material, can be used for combustion power generation or the air feed of Industrial Boiler, kiln and station boiler, gasification can also be used for and produce the Chemicals such as synthetic ammonia, methyl alcohol, alkene, oil product and Sweet natural gas.According to incompletely statistics, by the end of the end of the year 2013, China's fuel coal water slurry consumption will have reached 3,000 ten thousand tons/year, and gasified coal water slurry consumption has broken through 100,000,000 tons/year.Along with large-scale promotion and the application of fuel coal water slurry and gasified coal water slurry, the problems that water coal slurry concentration is on the low side to be brought cause the concern of people gradually, also become the major technology bottleneck of restriction coal water slurry industry development.
The grain size distribution of coal water slurry is the key factor affecting water coal slurry concentration, viscosity and rheological.But original coal water slurry preparation adopts single rod or ball mill pulping technique (first-generation pulping technique), once grind through rod or ball mill after feed coal fragmentation and can obtain finished product coal slurry, though technical process is simple, but but cannot realize the optimization of coal water slurry grain size distribution, the deposition efficiency of coal particle and coal-water fluid concentration are generally on the low side.In recent years, along with the development of coal water slurry technology of preparing, s-generation classified grinding coal water slurry technology of preparing (publication number: CN101173765B) becomes the pulping technique of main flow gradually, this technology is by the organic assembling of rough grinding machine and atomizer mill, the optimization of coal water slurry grain size distribution can be realized to a certain extent, coal-water fluid concentration can improve about 3 percentage points compared with original pulping technique, and effects of energy saving and emission reduction is obvious.But this technology fills in finished product coal water slurry the fine particle that particle diameter is 10 ~ 20 microns, and grain size distribution effect of optimization is limited.Theoretically, by controlling the size-grade distribution of coal water slurry, optimize grain size distribution, improve the deposition efficiency of coal water slurry, coal-water fluid concentration still has larger room for promotion.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of production system of discrete particle size grating high-concentration coal-water slurry, the distribution of each grain size intervals of technology controlling and process coal dust combined by the meticulous fragmentation of dry method and wet ultra-fine grinding and content, feed coal is through pulverizing, below extra-fine grinding to 45 millimeter, coal dust fine particle is enable fully to fill the hole of large coarse particles formation, form discrete particle size grating, thus increase substantially the concentration of coal water slurry.
For achieving the above object, the utility model takes following technical scheme: a kind of production system of discrete particle size grating high-concentration coal-water slurry, it is characterized in that: it comprises a coal store, the discharge port of described coal store connects the opening for feed of a meticulous breaking machine by a material feeder, the discharge port of described meticulous crusher connects the opening for feed of a middle Pulverized Coal Bin, the discharge port of described middle Pulverized Coal Bin connects the opening for feed of a coal powder grading machine by another material feeder, first discharge port of described coal powder grading machine connects the opening for feed of a meal surge bunker, the discharge port of described meal surge bunker connects the opening for feed of a slurry commanding tank, second discharge port of described coal powder grading machine connects the first opening for feed of a coal dust trapping tower, described coal dust trapping tower first discharge port connects the opening for feed of horizontal super grinder by a pump for mortar transmission, the discharge port of described horizontal super grinder connects the opening for feed of a screened stock tank, the discharge port of described screened stock tank is connected with the opening for feed of described slurry commanding tank, described coal dust trapping tower is provided with one for introducing the second opening for feed of the mixture of additive and water.
Arrange one the 3rd opening for feed at the top of described coal dust trapping tower, bottom arranges one second discharge port, and described second discharge port connects the 3rd opening for feed by a pipeline, and described pipeline arranges another pump for mortar transmission.
Second opening for feed of described coal dust trapping tower arranges an atomisation unit, and the 3rd opening for feed being positioned at described coal dust trapping top of tower arranges an atomisation unit.
Described additive is sulfonated lignin, humate or naphthalene sulfonic acidformaldehyde condensation product.
Described meticulous breaking machine, described coal powder grading machine, described slurry commanding tank, described super grinder and described screened stock tank adopt motor to drive respectively.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model is provided with a meticulous breaking machine, abundant fragmentation can be carried out to feed coal, the coal dust of obtained particle diameter≤2.5 millimeter, and the energy consumption of the utility model production system can be reduced.2, the utility model is provided with a coal powder grading machine, is separated the coal dust obtaining below critical grain size ~ 2.5 millimeter and critical grain size, improves fractional efficiency and the precision of coal dust through coal powder grading machine.3, the utility model is provided with a horizontal super grinder, coal slurry can be carried out below extra-fine grinding to 0.045 millimeter.4, the second discharge port of the utility model coal dust trapping tower bottom connects the 3rd opening for feed being positioned at coal dust trapping top of tower by a pipeline, and the coal slurry that coal dust can be trapped tower bottom is delivered to top by pump for mortar transmission circulation, thus improves the collection efficiency of coal dust.5, the utility model connects the mixture of an additive and water at the second opening for feed of coal dust trapping tower, and the utility model can prepare the coal water slurry of high density.6, the second opening for feed of the utility model coal dust trapping tower arranges an atomisation unit, and the 3rd opening for feed being positioned at coal dust trapping top of tower arranges an atomisation unit, and additive can be made fully to contact with coal slurry with the mixture of water.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the utility model proposes a kind of production system of discrete particle size grating high-concentration coal-water slurry, it comprises a coal store 1, the discharge port of coal store 1 connects the opening for feed of a meticulous breaking machine 3 by a material feeder 2, the discharge port of meticulous crusher 3 connects the opening for feed of a middle Pulverized Coal Bin 4, the discharge port of middle Pulverized Coal Bin 4 connects the opening for feed of a coal powder grading machine 6 by another material feeder 5, first discharge port of coal powder grading machine 6 connects the opening for feed of a meal surge bunker 7, and the discharge port of meal surge bunker 7 connects the opening for feed of a slurry commanding tank 8.Second discharge port of coal powder grading machine 6 connects the first opening for feed of a coal dust trapping tower 9, coal dust trapping tower 9 first discharge port connects the opening for feed of horizontal super grinder 10 by a pump for mortar transmission (not shown), the discharge port of horizontal super grinder 10 connects the opening for feed of a screened stock tank 11, and the discharge port of screened stock tank 11 is connected with the opening for feed of slurry commanding tank 8.Coal dust trapping tower 9 is also provided with one second opening for feed, for introducing the mixture of additive and water.
In above-described embodiment, the meticulous crusher 3 that the utility model adopts is as described in patent CN203342859U, and concrete structure repeats no more.
In above-described embodiment, the coal powder grading machine 6 that the utility model adopts is as described in patent CN202410998U, and concrete structure repeats no more.
In above-described embodiment, the horizontal super grinder 11 that the utility model adopts is as described in patent CN203264780U, and concrete structure repeats no more.
In above-described embodiment, at coal dust trapping tower 9 top, one the 3rd opening for feed is set, bottom arranges one second discharge port, second discharge port connects the 3rd opening for feed by pipeline 12, and another pump for mortar transmission 13 is set on pipeline 12, coal dust can be delivered to top by the coal slurry trapped bottom tower 9, thus improve the collection efficiency of coal dust.
In above-described embodiment, the second opening for feed of coal dust trapping tower 9 arranges an atomisation unit (not shown), and the mixture of additive and water can be made to spray into coal dust trapping tower 9 with vaporific.The 3rd opening for feed being positioned at coal dust trapping tower 9 top arranges an atomisation unit (not shown), and the coal slurry that coal dust can be made to trap outflow bottom tower 9 sprays into coal dust trapping tower 9 with vaporific.
In above-described embodiment, meticulous breaking machine 3, coal powder grading machine 6, slurry commanding tank 8, super grinder 11 and screened stock tank 12 all adopt motor to drive.
In above-described embodiment, additive is sulfonated lignin, humate or naphthalene sulfonic acidformaldehyde condensation product.
In above-described embodiment, coal dust of the present utility model is separated link and is not limited to flash liberation, also can adopt secondary or separating for several times depending on coal powder size distribution situation.
As shown in Figure 1, in use, the external feed coal in battery limit (BL) is delivered to coal store 1 by Belt Passage to the utility model after coarse breaking, and the feed coal in coal store 1 quantitatively sends into meticulous crusher 3 through a material feeder 2, finally will obtain particle diameter D
100(particle diameter corresponding when the cumulative particle sizes distribution number of coal dust reaches 100)≤2.5 millimeters, D
90the coal dust of≤1 millimeter is delivered to middle Pulverized Coal Bin 4, coal dust in middle Pulverized Coal Bin 4 is delivered to coal powder grading machine 6 through another material feeder 5 by adopting circulating nitrogen gas or air, be separated the coal dust obtaining below critical grain size ~ 2.5 millimeter and critical grain size through coal powder grading machine 6, the coal dust of critical grain size ~ 2.5 millimeter is directly delivered to meal surge bunker 7 through coal powder grading machine 6 first discharge port.Coal dust below critical grain size is delivered to coal dust trapping tower 9 through coal powder grading machine 6 second discharge port, by the mixture of additive and water, by coal dust, the solid content trapped in tower 9 is diluted to 45 ~ 55%, and the coal slurry be positioned at bottom coal dust trapping tower 7 is delivered to horizontal super grinder 11 by spiral pump (not shown) and carries out extra-fine grinding to D
90≤ 0.045 millimeter, be then delivered to screened stock tank 11 for subsequent use, the coal dust in the coal slurry in screened stock tank 11 and meal surge bunker 7 mixes by a certain percentage in slurry commanding tank 8, namely can obtain the high-concentration coal-water slurry with discrete particle size grating.
Enumerate two specific embodiments below again:
Embodiment 1
The feed coal that the present embodiment adopts is the special low culm of Shenhua: the coal blending (hereinafter referred to as " Firing Shenhua Coal ") of the mixed 1# coal=1:1 of god, its full water M
t=16%, as received basis ash content A
ar=9%, as received basis volatile matter V
ar=23%.
As shown in Figure 1, to utilize this feed coal to prepare the process of high-concentration coal-water slurry as follows for the utility model:
(1) Firing Shenhua Coal is delivered in meticulous crusher 3 and carries out the meticulous coal dust being crushed to particle diameter≤2.5mm;
(2) adopt coal powder grading machine 6 to be separated by the coal dust of≤2.5 millimeters, choose critical grain size dpc=200 micron, obtaining particle diameter is the coal dust that the coal dust of 200 microns ~ 2.5 millimeters and particle diameter are less than 200 microns;
(3) it is for subsequent use that the particle diameter accounting for 50 ~ 70% of Firing Shenhua Coal total mass is that the coal dust of 200 microns ~ 2.5 millimeters is delivered to coal dust surge bunker 7;
(4) coal dust that the particle diameter accounting for Firing Shenhua Coal total mass 30 ~ 50% is less than 200 microns mixes with the mass ratio of water by 2:3, adds by prepare coal slurry for subsequent use with the coal dust butt mass percent additive (sulfonated lignin) that is 0.5% simultaneously;
(5) adopted by coal slurry prepared by step (4) horizontal super grinder 10 to carry out extra-fine grinding, ultra-fine coal slurry particle diameter≤45 micron of grinding out, are delivered to screened stock tank 11 for subsequent use;
(6) be that the coal dust of 200 microns ~ 2.5 millimeters is undertaken mixing through stirring by the mass percent set with ultra-fine coal slurry prepared by step (5) by step (3) particle diameter, namely obtained coal slurry mass percent is the high-concentration coal-water slurry of the employing discrete particle size grating of 68%.
Embodiment 2
The feed coal that the present embodiment adopts is Xinjiang Red Hill coal (hereinafter referred to as " Red Hill coal "), its full water M
t=24%, as received basis ash content A
ar=14%, as received basis volatile matter V
ar=30%.
As shown in Figure 1, to utilize this feed coal to prepare the process of high-concentration coal-water slurry as follows for the utility model:
(1) Red Hill coal is added meticulous crusher 3 and carry out the meticulous coal dust being crushed to particle diameter≤2.5 millimeter;
(2) adopt coal powder grading machine 6 to be separated by the coal dust of≤2.5 millimeters, choose critical grain size d
pc=300 microns, obtaining particle diameter is the coal dust that the coal dust of 300 microns ~ 2.5 millimeters and particle diameter are less than 300 microns;
(3) it is for subsequent use that the particle diameter accounting for 60 ~ 80% of Red Hill coal total mass is that the coal dust of 300 microns ~ 2.5 millimeters is delivered to coal dust surge bunker 7;
(4) coal dust that the particle diameter accounting for 20 ~ 40% of Red Hill coal total mass is less than 300 microns carries out extra-fine grinding, and the microfine coal preparing particle diameter≤45 micron is for subsequent use;
(5) be that the coal dust of 300 microns ~ 2.5 millimeters and step (4) prepare≤45 microns of microfine coals, water by the mass percent mixing and stirring set by particle diameter prepared by step (3), add simultaneously by with coal dust butt mass percent be 0.5% additive (sulfonated lignin), namely can obtain the high-concentration coal-water slurry that coal slurry mass percent is the employing discrete particle size grating of 62%.
High-concentration coal-water slurry prepared by the utility model may be used for fuel and gasified coal water slurry field.
The various embodiments described above are only for illustration of the utility model; wherein the structure, mode of connection etc. of each parts all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (7)
1. the production system of a discrete particle size grating high-concentration coal-water slurry, it is characterized in that: it comprises a coal store, the discharge port of described coal store connects the opening for feed of a meticulous breaking machine by a material feeder, the discharge port of described meticulous crusher connects the opening for feed of a middle Pulverized Coal Bin, the discharge port of described middle Pulverized Coal Bin connects the opening for feed of a coal powder grading machine by another material feeder, first discharge port of described coal powder grading machine connects the opening for feed of a meal surge bunker, the discharge port of described meal surge bunker connects the opening for feed of a slurry commanding tank, second discharge port of described coal powder grading machine connects the first opening for feed of a coal dust trapping tower, described coal dust trapping tower first discharge port connects the opening for feed of horizontal super grinder by a pump for mortar transmission, the discharge port of described horizontal super grinder connects the opening for feed of a screened stock tank, the discharge port of described screened stock tank is connected with the opening for feed of described slurry commanding tank, described coal dust trapping tower is provided with one for introducing the second opening for feed of the mixture of additive and water.
2. the production system of a kind of discrete particle size grating high-concentration coal-water slurry as claimed in claim 1, it is characterized in that: at the top of described coal dust trapping tower, one the 3rd opening for feed is set, bottom arranges one second discharge port, described second discharge port connects the 3rd opening for feed by a pipeline, and described pipeline arranges another pump for mortar transmission.
3. the production system of a kind of discrete particle size grating high-concentration coal-water slurry as claimed in claim 1, it is characterized in that: the second opening for feed of described coal dust trapping tower arranges an atomisation unit, and the 3rd opening for feed being positioned at described coal dust trapping top of tower arranges an atomisation unit.
4. the production system of a kind of discrete particle size grating high-concentration coal-water slurry as claimed in claim 2, it is characterized in that: the second opening for feed of described coal dust trapping tower arranges an atomisation unit, and the 3rd opening for feed being positioned at described coal dust trapping top of tower arranges an atomisation unit.
5. the production system of a kind of discrete particle size grating high-concentration coal-water slurry as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described additive is sulfonated lignin, humate or naphthalene sulfonic acidformaldehyde condensation product.
6. the production system of a kind of discrete particle size grating high-concentration coal-water slurry as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described meticulous breaking machine, described coal powder grading machine, described slurry commanding tank, described super grinder and described screened stock tank adopt motor to drive respectively.
7. the production system of a kind of discrete particle size grating high-concentration coal-water slurry as claimed in claim 5, is characterized in that: described meticulous breaking machine, described coal powder grading machine, described slurry commanding tank, described super grinder and described screened stock tank adopt motor to drive respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009052.1U CN205205088U (en) | 2015-12-08 | 2015-12-08 | Production system of high concentration coal slurry is joined in marriage to discontinuous fraction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009052.1U CN205205088U (en) | 2015-12-08 | 2015-12-08 | Production system of high concentration coal slurry is joined in marriage to discontinuous fraction |
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| CN205205088U true CN205205088U (en) | 2016-05-04 |
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| CN201521009052.1U Expired - Fee Related CN205205088U (en) | 2015-12-08 | 2015-12-08 | Production system of high concentration coal slurry is joined in marriage to discontinuous fraction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233922A (en) * | 2018-10-24 | 2019-01-18 | 煤科院节能技术有限公司 | The preparation system and horizontal fine grinding technology of thin water-coal-slurry prepare thin water-coal-slurry and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233922A (en) * | 2018-10-24 | 2019-01-18 | 煤科院节能技术有限公司 | The preparation system and horizontal fine grinding technology of thin water-coal-slurry prepare thin water-coal-slurry and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20181208 |