CN103013596B - A kind of system and method that improves the polynary slurry concentration that gasifies in indirect coal liquefaction technique - Google Patents
A kind of system and method that improves the polynary slurry concentration that gasifies in indirect coal liquefaction technique Download PDFInfo
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- CN103013596B CN103013596B CN201210518303.3A CN201210518303A CN103013596B CN 103013596 B CN103013596 B CN 103013596B CN 201210518303 A CN201210518303 A CN 201210518303A CN 103013596 B CN103013596 B CN 103013596B
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Abstract
The invention discloses a kind of system and method that improves the polynary slurry concentration that gasifies in indirect coal liquefaction technique, wherein system includes rod mill, coal slurry groove, pump with slurry, thick stock tank, coarse slurry pump, atomizer mill, duff stock tank and screened stock pump; Its method comprises the steps: that (1) grinds rough coal slurry; (2) rough coal slurry dilution; (3) grind duff slurry; (4) rough coal slurry mixes and makes qualified coal slurry with duff slurry. The invention has the advantages that, greatly reduce coal consumption and the oxygen consumption of slip gasification, thus can voluminous synthetic oil 2434 tons, by 6000 yuan/ton of oil products calculating, can produce 1,460 ten thousand yuan/year of economic benefits; The wearing and tearing such as coal gasification polynary slurry pipeline, pump, valve, gasifying furnace nozzle are reduced, and increase service life; Atomization by the synthetic coal gasification polynary slurry of the inventive method is improved greatly, makes gasification furnace gasification result better; The grinding efficiency that can obviously improve rod mill, the output of rod mill can significantly improve.
Description
Technical field:
The present invention relates to a kind of system and method that improves gasification polynary slurry concentration, particularly relate toAnd a kind of system and method that improves the polynary slurry concentration that gasifies in indirect coal liquefaction technique.
Background technology:
Since Yi Tai indirect coal liquefaction demonstration plant is installed on and goes into operation in March, 2009, warpCross the trial production more than 3 years, device reaches at full capacity and stable operation; ICL for Indirect Coal Liquefaction system simultaneouslyThe research and development of oil tech also constantly make progress, and make performance and the ton synthetic oil gas consumption of catalystAll reach the international leading level, ton oil product consumption purified gas is well below former design.
But gasification polynary slurry concentration is on the low side, and coal gasification polynary slurry concentration can only reach59-59.5%, causes the gasification coal consumption of water-gas polynary slurry and oxygen consumption high; The polynary material of coal gasificationThe size distribution of slurry is unreasonable, causes the rheological characteristic of slurry and atomization poor, causes coal to turnRate is low. This is because the transport of polynary slurry gasification system coal gasification polynary slurry is all by pipeRoad pumping, so the mobility of coal gasification polynary slurry and stability determine that whole coal gasification is polynaryThe efficiency of slip transportation system, and pipeline under accident condition, whether equipment can be because coal gasification is manyUnit's slip sedimentation causes stopping up; Water-gas polynary slurry granularity is partially thick, causes coal gasification polynaryThe serious wear such as slip pipeline, pump, valve, gasifying furnace nozzle, service life is short.
Summary of the invention:
First object of the present invention is to provide a kind of gas in indirect coal liquefaction technique that improvesChange the system of polynary slurry concentration.
Second object of the present invention is to provide a kind of gas in indirect coal liquefaction technique that improvesChange the method for polynary slurry concentration.
First object of the present invention is implemented by following technical scheme, a kind of indirect liquid of coal that improvesThe system of the polynary slurry concentration that gasifies in metallization processes, it includes rod mill, coal slurry groove, with slurryPump, thick stock tank, coarse slurry pump, atomizer mill, duff stock tank and screened stock pump, the going out of described rod millMouth is connected with described coal slurry groove inlet duct, the outlet of described coal slurry groove and described pump intake with slurryPipeline connects, and described delivery side of pump with slurry is connected with described thick stock tank inlet duct, described thick slurryThe outlet of groove is connected with described coarse slurry pump inlet duct, the outlet of described coarse slurry pump and described fine grindingMachine below inlet duct connects, the inlet tube of the top outlet of described atomizer mill and described duff stock tankRoad connects, and the outlet of described duff stock tank is connected with described screened stock pump intake piping road, described thinSlurry delivery side of pump be connected with described rod mill inlet duct, described thick stock tank also with water storage device pipeRoad connects.
Described atomizer mill is ball mill.
Second object of the present invention implemented by following technical scheme, a kind of indirect liquid of coal that improvesThe method of the polynary slurry concentration that gasifies in metallization processes, it comprises the steps: that (1) grinds rough coalSlurry; (2) rough coal slurry dilution; (3) grind duff slurry; (4) rough coal slurry mixes system with duff slurryObtain qualified coal slurry;
(1) grind rough coal slurry: slightly broken particle diameter is not more than to coal grain, water and the dispersion of 10mmAgent adds and in described rod mill, grinds into rough coal slurry, enters after filtering described coal slurry groove, described inIn rough coal slurry, the average grain diameter of coal grain is 80-83 μ m, the mass percent concentration of described rough coal slurryFor 59-59.5%;
(2) rough coal slurry dilution: extract 10-15%'s in described coal slurry groove by described pump with slurryDescribed rough coal slurry is squeezed in described thick stock tank, adds water, by described rough coal slurry in described thick stock tankMass percent concentration is diluted to 38%-42%;
(3) grind duff slurry: the described rough coal slurry after described step (2) dilution is passed through to instituteState coarse slurry pump and squeeze in described atomizer mill, described rough coal slurry is entered by the entrance of described atomizer mill bottomEnter, described rough coal is starched bottom-up motion in described atomizer mill, grinds into average grain diameter and isThe duff slurry of 15-25 μ m, described duff flows into after starching the egress filtering by described atomizer mill topDescribed duff stock tank.
(4) rough coal slurry mixes and makes qualified coal slurry with duff slurry: the institute in described duff stock tankState duff slurry and squeezed in described rod mill by described screened stock pump, be mixed and made into matter with described rough coal slurryThe mixing coal slurry that amount percent concentration is 61.5-62.5%, described mixing coal slurry flows into described coalIn stock tank, obtain qualified coal slurry, then through described coal slurry groove shunting, 85-90% in described coal slurry grooveDescribed qualified coal slurry squeeze into gasification furnace gasification, qualified coal slurry is by described with slurry described in 10-15%Pump is squeezed into repeating said steps (2)-(4) operation in described thick stock tank.
In the described rough coal slurry of described step (1), particle diameter is greater than the quality percentage of 1mm coal grainContent is 0～1%, and particle diameter is that the quality percentage composition of 0.3～1mm coal grain is 15～18%, particle diameterThe quality percentage composition that is 0.075～0.3mm coal grain is 40～45%, and particle diameter is less than 0.075mmThe quality percentage composition of coal grain is 40～45%.
In the described mixing coal slurry of described step (4), particle diameter is greater than the quality hundred of 1mm coal grainDividing content is 0～1%, and particle diameter is that the quality percentage composition of 1～0.3mm coal grain is 10～15%, grainFootpath is that the quality percentage composition of 0.3～0.075mm coal grain is 45～50%, and particle diameter is 0.075mmThe quality percentage composition of coal grain is 45～50%.
The invention has the advantages that, (1) can be polynary by coal gasification by system level approach of the present inventionPulp density improves more than 2 percentage points, and grain size distribution is reasonable, and particle diameter reduces, and greatly reducesCoal consumption and the oxygen consumption of slip gasification, thereby can voluminous synthetic oil 2434 tons, by 6000 yuan/ ton oil product calculates, and can produce 1,460 ten thousand yuan/year of economic benefits; (2) system of the present invention is by rodGrinding machine coordinates with ball mill, can make polynary slurry reach a desirable particle diameter and coordinate, thereby carryHigh coal gasification polynary slurry mobility and stability, make coal gasification polynary slurry pipeline, pump, valveThe wearing and tearing such as door, gasifying furnace nozzle reduce, and increase service life; (3) close by the inventive methodThe atomization of the coal gasification polynary slurry becoming is improved greatly, makes gasification furnace gasification result moreGood; (4) after coal gasification polynary slurry grain size distribution more rationally, can obviously improve rod millGrinding efficiency, the output of rod mill can significantly improve.
Brief description of the drawings
Fig. 1 is a kind of system that improves the polynary slurry concentration that gasifies in indirect coal liquefaction techniqueSchematic diagram.
Fig. 2 is a kind of technique that improves the polynary slurry concentration that gasifies in indirect coal liquefaction techniqueFlow chart.
Rod mill 1, coal slurry groove 2, pump 3 with slurry, thick stock tank 4, coarse slurry pump 5, ball mill 6,Duff stock tank 7, screened stock pump 8, water storage device 9.
Detailed description of the invention:
Embodiment 1: a kind of improve in indirect coal liquefaction technique, gasify polynary slurry concentration beSystem, its include rod mill 1, coal slurry groove 2, pump with slurry 3, thick stock tank 4, coarse slurry pump 5,Ball mill 6, duff stock tank 7 and screened stock pump 8, the outlet of rod mill 1 and coal slurry groove 2 entrancesPipeline connects, and the outlet of coal slurry groove 2 is connected with pump 3 inlet ducts with slurry, the going out of pump 3 with slurryMouth is connected with thick stock tank 4 inlet ducts, and the outlet of thick stock tank 4 and coarse slurry pump 5 inlet ducts connectConnect, the outlet of coarse slurry pump 5 is connected with ball mill 6 below inlet ducts, and ball mill 6 tops go outMouthful be connected the entering of the outlet of duff stock tank 7 and screened stock pump 8 with the inlet duct of duff stock tank 7Mouth pipeline connects, and the outlet of screened stock pump 8 is connected with rod mill 1 inlet duct, and thick stock tank 4 alsoBe connected with water storage device 9 pipelines.
Embodiment 2: a kind of side of improving the polynary slurry concentration that gasifies in indirect coal liquefaction techniqueMethod, it comprises the steps: that (1) grinds rough coal slurry; (2) rough coal slurry dilution; (3) grindDuff slurry; (4) rough coal slurry mixes and makes qualified coal slurry with duff slurry;
(1) grind rough coal slurry: coal grain, water and the dispersant of slightly broken particle diameter≤10mm are addedEnter in rod mill 1 and grind into rough coal slurry, enter after filtering coal slurry groove 2, in rough coal slurry, grainThe quality percentage composition that footpath is greater than 1mm coal grain is 0～1%, and particle diameter is the matter of 0.3～1mm coal grainAmount percentage composition is 15～18%, and particle diameter is that the quality percentage composition of 0.075～0.3mm coal grain is40～45%, the quality percentage composition that particle diameter is less than 0.075mm coal grain is 40～45%. Rough coal slurryThe average grain diameter of middle coal grain is 80-83 μ m, and the mass percent concentration of rough coal slurry is59-59.5％；
(2) rough coal slurry dilution: the rough coal that extracts 10-15% in coal slurry groove 2 by pump 3 with slurrySlurry is squeezed in thick stock tank 4, in thick stock tank 4, adds water, and rough coal is starched to mass percent concentration rareRelease to 38%-42%;
(3) grind duff slurry: the rough coal slurry after step (2) dilution is passed through to 5 dozens of coarse slurry pumpsEnter in ball mill 6, rough coal slurry is entered by the entrance of ball mill 6 bottoms, and rough coal is starched at ball mill6 interior bottom-up motions, grind into average grain diameter and are the duff slurry of 15-25 μ m, duff slurry byAfter the egress filtering on ball mill 6 tops, flow into duff stock tank 7.
(4) rough coal slurry mixes and makes qualified coal slurry with duff slurry: the duff in duff stock tank 7Slurry is squeezed in rod mill 1 by screened stock pump 8, is mixed and made into mass percent concentration to be with rough coal slurryThe mixing coal slurry of 61.5-62.5%, mixes in coal slurry, and particle diameter is greater than the quality percentage of 1mm coal grainContent is 0～1%, and particle diameter is that the quality percentage composition of 1～0.3mm coal grain is 10～15%, particle diameterThe quality percentage composition that is 0.3～0.075mm coal grain is 45～50%, and particle diameter is 0.075mm coalThe quality percentage composition of grain is 45～50%. Mix in coal slurry inflow coal slurry groove 2 and obtain qualified coalSlurry, then shunts through coal slurry groove 2, and in coal slurry groove 2, the qualified coal slurry of 85-90% is squeezed into gasificationFurnace gas, the qualified coal slurry of 10-15% is squeezed into repeating said steps in thick stock tank 4 by pump 3 with slurry(2)-(4) operation.
Claims (1)
1. improve a method for the polynary slurry concentration that gasifies in indirect coal liquefaction technique, itsComprise the steps: that (1) grinds rough coal slurry; (2) rough coal slurry dilution; (3) grind duff slurry;(4) rough coal slurry mixes and makes qualified coal slurry with duff slurry;
(1) grind rough coal slurry: coal grain, water and the dispersant of slightly broken particle diameter≤10mm are addedEnter in rod mill (1) and grind into rough coal slurry, enter after filtering coal slurry groove (2), rough coal slurryIn, the quality percentage composition that particle diameter is greater than 1mm coal grain is 0～1%, particle diameter is 0.3～1mm coalThe quality percentage composition of grain is 15～18%, and particle diameter is the quality percentage of 0.075～0.3mm coal grainContent is 40～45%, and the quality percentage composition that particle diameter is less than 0.075mm coal grain is 40～45%;In rough coal slurry, the average grain diameter of coal grain is 80-83 μ m, and the mass percent concentration of rough coal slurry is59-59.5％；
(2) rough coal slurry dilution: extract 10-15% in coal slurry groove (2) by pump with slurry (3)Rough coal slurry squeeze in thick stock tank (4), in thick stock tank (4), add water, rough coal is starched to qualityPercent concentration is diluted to 38%-42%;
(3) grind duff slurry: the rough coal slurry after step (2) dilution is passed through to coarse slurry pump (5)Squeeze in ball mill (6), rough coal slurry is entered by the entrance of ball mill (6) bottom, rough coal slurryBottom-up motion in ball mill (6), grinds into the duff that average grain diameter is 15-25 μ mSlurry, duff flows into duff stock tank (7) after starching the egress filtering by ball mill (6) top;
(4) rough coal slurry mixes and makes qualified coal slurry with duff slurry: duff stock tank (7) interior carefullyCoal slurry is squeezed in rod mill (1) by screened stock pump (8), is mixed and made into quality percentage with rough coal slurrySpecific concentration is the mixing coal slurry of 61.5-62.5%, mixes in coal slurry, and particle diameter is greater than 1mm coal grainQuality percentage composition be 0～1%, particle diameter is that the quality percentage composition of 1～0.3mm coal grain is10～15%, particle diameter is that the quality percentage composition of 0.3～0.075mm coal grain is 45～50%, particle diameterFor the quality percentage composition of 0.075mm coal grain is 45～50%; Mix coal slurry and flow into coal slurry groove (2)In obtain qualified coal slurry, then through coal slurry groove (2) shunting, 85-90% in coal slurry groove (2)Qualified coal slurry squeeze into gasification furnace gasification, the qualified coal slurry of 10-15% is squeezed into by pump with slurry (3)Repeating said steps (2)-(4) operation in thick stock tank (4).
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| CN106269085A (en) * | 2016-08-26 | 2017-01-04 | 东华工程科技股份有限公司 | A kind of method of ball mill concentration low-disintegration coal gasified coal water slurry concentration |
| CN108558157A (en) * | 2018-06-20 | 2018-09-21 | 中煤陕西榆林能源化工有限公司 | A kind of biochemical sludge processing system and processing method |
| CN111073715B (en) * | 2020-01-10 | 2023-10-27 | 陕西神渭煤炭管道运输有限责任公司 | Production equipment and production method for converting pipe coal slurry into gasified coal water slurry |
| CN113604261B (en) * | 2021-07-12 | 2022-12-20 | 江苏恒丰能环科技股份有限公司 | Method for precise grading by adopting screening of coal slurry separator |
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