CN103421558A - Preparation apparatus and preparation method of coal water slurry - Google Patents
Preparation apparatus and preparation method of coal water slurry Download PDFInfo
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- CN103421558A CN103421558A CN2012101510197A CN201210151019A CN103421558A CN 103421558 A CN103421558 A CN 103421558A CN 2012101510197 A CN2012101510197 A CN 2012101510197A CN 201210151019 A CN201210151019 A CN 201210151019A CN 103421558 A CN103421558 A CN 103421558A
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- 239000003245 coal Substances 0.000 title claims abstract description 147
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 239000002002 slurry Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 47
- 238000000227 grinding Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 23
- 238000003801 milling Methods 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 8
- 238000010298 pulverizing process Methods 0.000 claims description 8
- 238000009837 dry grinding Methods 0.000 claims description 7
- 238000001238 wet grinding Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract 3
- 239000003250 coal slurry Substances 0.000 description 24
- 230000008569 process Effects 0.000 description 13
- 239000000654 additive Substances 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 9
- 239000002802 bituminous coal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002309 gasification Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007613 slurry method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003077 lignite Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000003476 subbituminous coal Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
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Abstract
The invention relates to a preparation apparatus and a preparation method of coal water slurry. The preparation apparatus of the coal water slurry comprises a crushing device used for crushing raw material coal; a grinding device used for grinding the crushed raw material coal to mix with water; and a microwave producing device used for microwave processing of the crushed raw material coal.
Description
Technical field
The present invention relates to preparation facilities and the preparation method of a kind of coal water slurry (Coal Water Slurry, CWS).
Background technology
In the coal gasification field, usually adopt two kinds of methods that coal is input in vapourizing furnace and is gasified.A kind of method is to utilize the nitrogen pneumatic transport coal dust of pressurization, and it is sprayed into vapourizing furnace.Another kind method is first to prepare the slurry of coal and water, i.e. " coal water slurry ", then be transported to this coal water slurry in vapourizing furnace and gasified.Because the coal water slurry method is more simple and reliable than the gasification process that adopts dry pulverized coal, the charging of being more convenient for, and can be used for higher vapor pressure, thereby it is widely applied.
Usually, higher water coal slurry concentration (water coal slurry concentration refers to the concentration of coal in mud) can bring higher gasification efficiency and lower coal and the consumption of oxygen.Therefore, in preparation process, the coal water slurry that contains higher water coal slurry concentration is prepared in normal expectation, thereby can coal water slurry be gasified in the mode of less expensive.Certain methods is attempted improving water coal slurry concentration.Yet, in more existing application, do not make water coal slurry concentration reach expected value, especially when feed coal is low-rank coal, situation is more outstanding.
So, need to provide a kind of preparation facilities of new coal water slurry and preparation method to improve water coal slurry concentration.
Summary of the invention
Conclude one or more aspects of the present invention now so that basic comprehension of the present invention, wherein this conclusion is not extensive overview of the present invention, and not is intended to identify some key element of the present invention, not is intended to mark its scope yet.On the contrary, the main purpose of this conclusion is to present hereinafter more detailed description to present concepts more of the present invention with reduced form before.
One aspect of the present invention is to provide a kind of preparation facilities of coal water slurry.The preparation facilities of this coal water slurry comprises shredding unit, for pulverizing feed coal; Milling apparatus, the feed coal after shattering for grinding is also mixed with water; And microwave generator, the feed coal after shattering for microwave treatment.
Another aspect of the present invention is to provide a kind of preparation method of coal water slurry.The preparation method of this coal water slurry comprises the pulverizing feed coal; Feed coal after grinding shatters; Feed coal after grinding is mixed with water; Microwave treatment is provided.
Compared to prior art, the present invention is by increasing the flow process of microwave treatment in the process in the preparation coal water slurry, thereby improved the concentration of coal water slurry in the process of preparation, so just can use cheap low-rank coal to be prepared as feed coal, and without using high-order coal that price is higher as feed coal, so can be greatly cost-saving.
The accompanying drawing explanation
For embodiments of the present invention, be described in conjunction with the drawings, the present invention may be better understood, in the accompanying drawings:
The schematic diagram of the better embodiment of the preparation facilities that Fig. 1 is coal water slurry of the present invention;
Fig. 2-Fig. 6 is respectively the schematic diagram of other five better embodiment of the preparation facilities of coal water slurry of the present invention; And
The water coal slurry concentration that when Fig. 7 is the preparation coal water slurry, applied microwave is processed and applied microwave is processed and the Experimental Comparison schematic diagram of viscosity.
Embodiment
Below will describe the specific embodiment of the present invention, and it is pointed out that in the specific descriptions process of these embodiments, in order to carry out brief and concise description, this specification sheets can not all be done detailed description to all features of actual embodiment.Should be understandable that; in the actual implementation process of any one embodiment; in the process in any one engineering project or design item; in order to realize developer's objectives; in order to meet restriction System Dependent or that business is relevant; usually can make various concrete decision-makings, and this also can change to another kind of embodiment from a kind of embodiment.In addition, it will also be appreciated that, although the effort of having done in this performance history may be complicated and tediously long, yet for those of ordinary skill in the art relevant to content disclosed by the invention, some designs of carrying out on the basis of the technology contents disclosed in the disclosure, the changes such as manufacture or production are conventional technique means, not should be understood to content of the present disclosure insufficient.
Unless otherwise defined, the technical term used in claims and specification sheets or scientific terminology should be in the technical field of the invention the ordinary meaning that personage with general technical ability understands." first " of using in patent application specification of the present invention and claims, " second " and similar word do not mean any order, quantity or importance, and just are used for distinguishing different integral parts." one " or similar words such as " one " do not mean quantity limitation, and mean and have at least one." comprise " or " comprising " etc. similarly word mean to appear at the element of " comprising " or " comprising " front or object and contain and appear at element or object and the equivalent element thereof that " comprising " or " comprising " enumerate later, do not get rid of other elements or object." connection " or " being connected " etc. similarly word not be defined in connection physics or machinery, but can comprise electric connection, no matter be directly or indirectly.
Please refer to Fig. 1, is a better embodiment 10 of the preparation facilities of coal water slurry of the present invention.In the following embodiments, " coal water slurry " can refer to the mixture of coal, water and the additive of some amount, and it can produce for generating, heating, support processing and manufacture the energy used.In recent years, the use of coal water slurry has become a kind of substituting selection of using traditional fuel oil and coal.
In certain application, coal water slurry can comprise the coal particle of from 55% to 70% weight percent (Weight Percentage, wt%), the water from 30wt% to 45wt%, and be less than the additive of 1wt%.Embodiments of the present invention are not limited to can be used for coal or the additive of any particular type in coal water slurry.In non-limiting example, the comprised sulfonated alkyl naphathalene of additive (Alkylnaphthelene Sulfonate) and polyoxyalkylene alkyl (Polyoxyalkylene Alkyl Ether).Also can not place additive sometimes.
In embodiment 10, the preparation facilities of this coal water slurry comprises that one shatters device 12, microwave oven 13, milling apparatus 14 and a filtration unit 15.The preparation facilities of this coal water slurry is for by water coal slurry concentration, lower feed coal is prepared as the coal water slurry 18 that water coal slurry concentration is high, this feed coal can be low-rank coal (Low Rank Coal) 11, as one or more in sub-bituminous coal (Sub-bituminous coal) and brown coal (Lignite), low-rank coal typically refers to the class coal of coal rank (coal rank) lower than bituminous coal (bituminous coal).Because the cost of low-rank coal is lower, and high-order coal (High Rank Coal) is as higher as the cost of bituminous coal (Bituminous coal) and hard coal (Anthracite), therefore use low-rank coal can greatly save cost as feed coal.If, but feed coal is while being the high-order coal, the preparation facilities of application coal water slurry of the present invention can further improve water coal slurry concentration equally, therefore also can use according to actual needs the high-order coal as feed coal.
As shown in Figure 1, this shredding unit 12 is for pulverizing the low-rank coal 11 as feed coal.This shredding unit 12 is ground into suitable particle size by low order coal 11, so that follow-up grinding process more easily carries out.
This microwave oven 13 is for providing microwave to carry out microwave treatment with the low-rank coal 11 to after pulverizing.Corresponding parameter that this microwave oven is pre-set, such as the power of microwave treatment time, microwave and frequency etc.In infinite embodiment, this microwave treatment time can be set in 10 minutes, as about 5 minutes; The frequency of this microwave can be made as between the 900-3000 megahertz, as about 2455 megahertzes; The power of this microwave has the quantity of low-rank coal 11 to decide.In other embodiment, above-mentioned parameter preset also can be adjusted accordingly according to different needs, is not limited to the above-mentioned example provided, and above-mentioned parameter preset can be controlled and can be monitored in real time by two kinds of modes manually or automatically.In other embodiments, this microwave oven 13 also can select other can produce the microwave generator of microwave equally, the design of its shape and the position of installation can be considered according to the concrete arrangement of the preparation facilities of whole coal water slurry, for example coordinate the shape of front shredding unit 12, back milling apparatus 14 and transmission water-coal-slurry pipeline to be designed.
This milling apparatus 14 carries out milled processed and adds appropriate water 16 and additive 17 to be mixed simultaneously for the low-rank coal 11 to after microwave treatment.By the low-rank coal 11 after microwave treatment carry out milled processed and with the coal water slurry 18 of just having prepared high density after water 16 and additive 17 mix.The milling apparatus 14 here is wet-milling (Wet Milling) treatment unit, and it can be rough grinding device or fine grainding device as required.
In the embodiment 10 of Fig. 1, the coal water slurry 18 by this high density be transported to aftertreatment device as the gasifier (not shown) before, can increase a filtration unit 15, with the coal water slurry 18 for to this high density, filtered, remove impurity as stone, thus the processing that improves the follow-up coal water slurry to this high density 18.And in some embodiments, this filtration unit 15 also can.
Please refer to Fig. 2, is another better embodiment 20 of the preparation facilities of coal water slurry of the present invention.This embodiment 20 is only had any different with the embodiment 10 of Fig. 1 in the position of components arrangement, and this difference is, this microwave oven 13 has been arranged at the back of this filtration unit 15.These two embodiments the 10, the 20th, two examples of wet ground mode.In other embodiments, this microwave oven 13 also can be arranged between this milling apparatus 14 and this filtration unit 15.But no matter which position this microwave oven 13 is arranged at, this microwave oven 13 all can improve by setting suitable parameter the water coal slurry concentration of the coal water slurry 18 finally prepared, and this parameter can be led to test and be obtained.
Please refer to Fig. 3, is another better embodiment 30 of the preparation facilities of coal water slurry of the present invention.The preparation facilities of this coal water slurry comprises that one shatters device 32, microwave oven 33, milling apparatus 34, filtration unit 35 and a mixing vessel 36.Equally, the preparation facilities of this coal water slurry is for by water coal slurry concentration, lower low-rank coal 31 is prepared as the coal water slurry 39 that water coal slurry concentration is high.
As shown in Figure 3, this shredding unit 32 is for pulverizing the low-rank coal 31 as feed coal.This shredding unit 32 is ground into suitable particle size by low order coal 31, so that follow-up grinding process more easily carries out.
This microwave oven 33 is for providing microwave to carry out microwave treatment with the low-rank coal 31 to after pulverizing.Corresponding parameter that this microwave oven is pre-set, such as the power of microwave treatment time, microwave and frequency etc.Concrete setting and embodiment 10 are similar, repeat no more here.
This milling apparatus 34 carries out milled processed for the low-rank coal 31 to after microwave treatment, for dry grinding (Dry Milling), processes herein.The milling apparatus 34 here is the dry grinding treatment unit, and it can be rough grinding device or fine grainding device as required.It is that requirement according to the coal water slurry that will produce is selected that the application wet-milling is still dry grinded, and for example, power plant adopts the dry grinding processing mode mostly usually, and gasification plant adopts the wet ground mode mostly.
This mixing vessel 36 is mixed with water 37 and additive 38 for the low-rank coal 31 by after milled processed, with the coal water slurry 39 of having prepared high density.In the embodiment 30 of Fig. 3, in the low-rank coal 31 by after this milled processed with before water 37 and additive 38 are mixed, can increase a filtration unit 35, with the coal water slurry 39 for to this high density, filtered, remove impurity as stone, thus the processing that improves the follow-up coal water slurry to this high density 39.And in some embodiments, this filtration unit 35 also can.
Please refer to Fig. 4, is another better embodiment 40 of the preparation facilities of coal water slurry of the present invention.This embodiment 40 is only had any different with the embodiment 30 of Fig. 3 in the position of components arrangement, and this difference is, this filtration unit 35 exchanges with the position of this mixing vessel 36.
Please refer to Fig. 5, is another better embodiment 50 of the preparation facilities of coal water slurry of the present invention.This embodiment 50 is only had any different with the embodiment 40 of Fig. 4 in the position of components arrangement, and this difference is, this microwave oven 33 exchanges with the position of this milling apparatus 34.
Please refer to Fig. 6, is another better embodiment 60 of the preparation facilities of coal water slurry of the present invention.This embodiment 60 is only had any different with the embodiment 50 of Fig. 5 in the position of components arrangement, and this difference is, this filtration unit 35 exchanges with the position of this mixing vessel 36.These four embodiments the 30,40,50, the 60th, four examples of dry grinding processing mode.In other embodiments, this microwave oven 33 also can be arranged between this mixing vessel 36 and this filtration unit 35, or is arranged at the least significant end of this preparation process, or a plurality of microwave ovens 33 are arranged in to above-mentioned different positions place simultaneously carry out respectively microwave treatment.But no matter which position this microwave oven 33 is arranged at, this microwave oven 33 all can improve by setting suitable parameter the water coal slurry concentration of the coal water slurry 39 finally prepared, and this parameter can be by constantly test acquisition.
For above-mentioned six embodiments 10,20,30,40,50,60 that provide, after microwave treatment by this microwave oven (13,33), low order coal (11,31) character has in some respects obtained having improved, such as having reduced the carbon ratio rate, reduced natural humidity, level and smooth particle surface etc.Therefore, improved the water coal slurry concentration of the coal water slurry (18,39) of final output.Thereby use cheap low-rank coal to get final product the satisfactory coal water slurry of output water coal slurry concentration as feed coal, and, without using expensive high-order coal as feed coal, so can greatly save cost.
The water coal slurry concentration that when Fig. 7 is the preparation coal water slurry, applied microwave is processed and applied microwave is processed and the Experimental Comparison schematic diagram of viscosity (Viscosity).Described herein, the experimental data of these two groups contrasts is except the microwave treatment difference, and other test conditionss are all identical.The embodiment that Fig. 7 applied microwave is processed is above-mentioned embodiment 60, and the Preset Time of this microwave treatment is approximately 5 minutes, power is approximately 420 watts, frequency and is approximately 2455 megahertzes, and the low-rank coal 31 of processing is approximately the 20-50 gram.In other processs of the test, above-mentioned parameter can be adjusted, and can apply other embodiments 10,20,30,40,50, no longer repeats here to illustrate.
In Fig. 7, curve 72 and 74 represents respectively the trial curve that applied microwave is not processed and applied microwave is processed, and characterizes the relation between water coal slurry concentration and viscosity.Can significantly find out, under same levels of viscosity, the water coal slurry concentration of the coal water slurry of curve 74 representatives of process microwave treatment is greater than the water coal slurry concentration of the coal water slurry of curve 72 representatives of process microwave treatment, for example be all 1000 centipoise (centipoises meeting viscosity, during condition cp), the water coal slurry concentration of curve 74 correspondences is approximately 57.7%, and the water coal slurry concentration of curve 72 correspondences is approximately 54.7%.In other words, after microwave treatment, water coal slurry concentration has obviously improved, and has met the follow-up requirement to coal water slurry.
Although describe the present invention in conjunction with specific embodiment, those skilled in the art will appreciate that and can make many modifications and modification to the present invention.Therefore, recognize, the intention of claims is to cover all such modifications and the modification in true spirit of the present invention and scope.
Claims (17)
1. the preparation facilities of a coal water slurry comprises:
Shredding unit, for pulverizing feed coal;
Milling apparatus, the feed coal after shattering for grinding is also mixed with water; And
Microwave generator, the feed coal after shattering for microwave treatment.
2. the preparation facilities of a coal water slurry as claimed in claim 1, wherein this microwave generator is between this shredding unit and this milling apparatus.
3. the preparation facilities of a coal water slurry as claimed in claim 1, wherein this milling apparatus is between this shredding unit and this microwave generator.
4. the preparation facilities of coal water slurry as claimed in claim 2 or claim 3, wherein this preparation facilities also comprises filtration unit, for filtering the feed coal after grinding.
5. the preparation facilities of a coal water slurry as claimed in claim 1, wherein this feed coal comprises low-rank coal.
6. the preparation facilities of a coal water slurry as claimed in claim 1, wherein the time of this microwave treatment is set as being less than 10 minutes, and the frequency setting of microwave is between the 900-3000 megahertz.
7. the preparation facilities of a coal water slurry as claimed in claim 6, wherein the time of this microwave treatment is approximately 5 minutes, and the frequency setting of microwave is about 2455 megahertzes.
8. the preparation facilities of a coal water slurry as claimed in claim 1, wherein this milling apparatus comprises the wet-milling milling apparatus.
9. the preparation facilities of a coal water slurry as claimed in claim 1, wherein this milling apparatus comprises the dry grinding milling apparatus, the feed coal ground after shattering mixes with water by a mixing vessel realization.
10. the preparation facilities of a coal water slurry as claimed in claim 9, wherein this microwave generator is between this dry grinding milling apparatus and this mixing vessel.
11. the preparation method of a coal water slurry comprises:
Pulverize feed coal;
Feed coal after grinding shatters;
Feed coal after grinding is mixed with water; And
Microwave treatment is provided.
12. a method as claimed in claim 11, wherein this provides the step of microwave treatment to comprise: at least one of the feed coal after the feed coal after described pulverizing, grinding and mixed feed coal are carried out to microwave treatment.
13. a method as claimed in claim 11 also comprises: filter one of feed coal after at least described grinding and mixed feed coal.
14. a method as claimed in claim 11, wherein the time of this microwave treatment is set as being less than 10 minutes, and the frequency setting of microwave is between the 900-3000 megahertz.
15. a method as claimed in claim 14, wherein the time of this microwave treatment is approximately 5 minutes, and the frequency setting of microwave is about 2455 megahertzes.
16. a method as claimed in claim 11, wherein said grinding reaches synchronizes and carries out with the water mixing step.
17. a method as claimed in claim 11, wherein this feed coal comprises low-rank coal.
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| CN201210151019.7A CN103421558B (en) | 2012-05-15 | 2012-05-15 | The preparation facilities of coal water slurry and preparation method |
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Cited By (3)
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| WO2016085691A1 (en) * | 2014-11-27 | 2016-06-02 | General Electric Company | Apparatus and method for making coal water slurry |
| CN106916612A (en) * | 2017-02-24 | 2017-07-04 | 浙江大学 | The method that sludge water-coal-slurry slurry performance is improved by sludge pretreatment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016085691A1 (en) * | 2014-11-27 | 2016-06-02 | General Electric Company | Apparatus and method for making coal water slurry |
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| CN106916612B (en) * | 2017-02-24 | 2018-07-27 | 浙江大学 | The method for improving sludge water-coal-slurry slurry performance by sludge pretreatment |
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