CN212655671U - Long-distance pipe-conveying conventional-concentration coal slurry dewatering system - Google Patents
Long-distance pipe-conveying conventional-concentration coal slurry dewatering system Download PDFInfo
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- CN212655671U CN212655671U CN202021350503.9U CN202021350503U CN212655671U CN 212655671 U CN212655671 U CN 212655671U CN 202021350503 U CN202021350503 U CN 202021350503U CN 212655671 U CN212655671 U CN 212655671U
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Abstract
The utility model discloses a defeated conventional concentration coal slurry dewatering system of long distance pipe, including storing up the thick liquid jar, centrifuge pan feeding buffer tank, centrifuge accident bucket, screen cloth sedimentation centrifuge, concentrated regulating well, concentrated machine, pressure filter, dosing machine, storage coal yard and coal slime waste water treatment station, couple together it through a plurality of pipelines to through the reasonable cooperation of a plurality of valves, when the coal slurry nature changes, can in time adjust production technology, both guaranteed product quality, guaranteed the output of product again, make production can stably go on. The system can simultaneously realize the high-efficiency recovery of coarse-particle coal slime and fine-particle coal slime, and simultaneously two sections of concentration are arranged to fully concentrate and settle coal slime water, so that the treatment load of subsequent coal slime wastewater is greatly reduced, and the subsequent coal slime wastewater treatment is ensured to reach the standard.
Description
Technical Field
The utility model belongs to the technical field of the coal chemical industry, concretely relates to conventional concentration coal slurry dewatering system is failed to long distance pipe.
Background
At present, the project of long-distance pipeline coal slurry is very few, and the application of the dewatering system of the long-distance pipeline coal slurry is almost not available. At present, most of the foreign pipeline coal slurry dewatering systems are vibration dewatering screens and coal slurry centrifuges. Other ore pulp dewatering devices at home and abroad generally comprise a cyclone, a centrifugal machine and a concentration tank, the water content of obtained products is high, the recovery rate of the centrifugal machine is low, the fine coal slime is limited to be recycled, the subsequent concentration tank is overloaded, the settling time is long, the settling efficiency is low, the quality of effluent water is poor, the subsequent coal slime wastewater treatment load is increased, and the coal slime wastewater treatment difficulty is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a conventional concentration coal slurry dewatering system is failed to long distance pipe has solved the problem that the rate of recovery of defeated coal slurry is low among the prior art.
The utility model adopts the technical proposal that the coal slurry dewatering system with the conventional concentration for long-distance pipe transportation comprises a slurry storage tank, the slurry storage tank is connected with a first centrifugal pump through a sixth pipeline, a discharge port of the first centrifugal pump is connected with an inlet of a centrifuge feeding buffer barrel through a seventh pipeline, an outlet of the centrifuge feeding buffer barrel is connected with a centrifuge accident barrel through a first pipeline and a twenty-first pipeline, an outlet of the centrifuge accident barrel is connected with a second centrifugal pump through an eighth pipeline, the second centrifugal pump is connected with an inlet of the centrifuge feeding buffer barrel through a pipeline, an outlet of the centrifuge feeding buffer barrel is also connected with an inlet of a screen sedimentation centrifuge through a twentieth pipeline and a third pipeline, the twentieth pipeline is connected with the centrifuge accident barrel through a second pipeline, a screen section and a centrifugate section outlet of the screen sedimentation centrifuge are respectively connected with an inlet of the centrifugate barrel through a ninth pipeline and a tenth pipeline, the export of the centrifugate bucket connects one section of concentrated regulating well, the export of one section of concentrated regulating well connects one section of concentrated machine and the concentrated regulating well of second section respectively through fifth pipeline and fourth pipeline, the entry of one section of concentrated machine through the concentrated regulating well of twenty-two pipe connections second section, the export of the concentrated well of second section is passed through the pipeline and is connected with the concentrated machine of second section, the entry of one section of concentrated machine bottom mud discharging port through eleventh pipe connection pressure filter pan feeding agitator, the entry of two section of concentrated machine bottom mud discharging port through twelfth pipe connection pressure filter pan feeding agitator, the entry of pressure filter pan feeding agitator is passed through thirteenth pipe connection pressure filter in the export of pressure filter pan feeding agitator.
The utility model is also characterized in that,
the filter press is connected with an inlet of the third centrifugal pump through a fourteenth pipeline, and an outlet of the third centrifugal pump is connected with the first concentration regulating well through a fifteenth pipeline.
One section of concentrated regulation well has PAC automatic dosing machine through sixteenth pipe connection, and one section of concentrated regulation well has PAM automatic dosing machine through eighteenth pipe connection, and the concentrated regulation well of second-stage section is connected with PAC automatic dosing machine through seventeenth pipeline, and the concentrated regulation well of second-stage section still is connected with PAM automatic dosing machine through nineteenth pipeline.
And an eighth valve and a first flowmeter are arranged on the sixteenth pipeline, a tenth valve and a third flowmeter are arranged on the eighteenth pipeline, a ninth valve and a second flowmeter are arranged on the seventeenth pipeline, and an eleventh valve and a fourth flowmeter are arranged on the nineteenth pipeline.
The top of the second-stage thickener is connected with a coal slime wastewater treatment station through a twenty-third pipeline.
The screen sedimentation centrifuge is connected with a centrifuge scraper conveyor through a centrifuge blanking port, and the centrifuge scraper conveyor is connected with a coal storage yard through a belt conveyor; the filter press is connected with a filter press scraper conveyor through a filter press blanking port, and the filter press scraper conveyor is connected with a coal storage yard through a belt conveyor.
The first valve is arranged on the second pipeline, the second valve is arranged on the third pipeline, the third valve is arranged on the fourth pipeline, the fourth valve is arranged on the fifth pipeline, the fifth valve is arranged on the eleventh pipeline, the sixth valve is arranged on the twelfth pipeline, and the seventh valve is arranged on the thirteenth pipeline.
The utility model has the advantages that,
the system can simultaneously realize the high-efficiency recovery of coarse particle coal slime and fine particle coal slime, and simultaneously pre-settles the coal slime wastewater to reduce the load of a subsequent coal slime wastewater treatment station. In addition, an inner circulation is formed between the centrifugal liquid buffer barrel and the accident barrel, so that qualified and stable slurry feeding of the centrifugal machine can be ensured, and the coal slurry cannot overflow or enter the centrifugal machine when an accident or a sudden situation occurs, so that the coal slurry resource waste and the unstable working efficiency of the centrifugal machine are caused. Finally, two adjusting wells are arranged in front of the first-stage thickener and the second-stage thickener, so that the chemicals can be added in advance to prevent uneven dosing in the thickeners and accelerate the sedimentation speed of the coal slime wastewater.
Drawings
Fig. 1 is the structural schematic diagram of the utility model discloses a conventional concentration coal slurry dewatering system is defeated to long distance pipe.
In the figure, 1, a slurry storage tank, 2, a centrifuge feeding buffer barrel, 3, a centrifuge accident barrel, 4, a screen sedimentation centrifuge, 5, a centrifugate barrel, 6, a first-stage concentration adjusting well, 7, a first-stage concentrator, 8, a second-stage concentration adjusting well, 9, a second-stage concentrator, 10, a filter press feeding stirring barrel, 11, a filter press, 12, a coal storage yard, 13, a coal slime wastewater treatment station, 14, a first valve, 15, a second valve, 16, a third valve, 17, a fourth valve, 18, a fifth valve, 19, a sixth valve, 20, a seventh valve, 21, a first pipeline, 22, a second pipeline, 23, a third pipeline, 24, a fourth pipeline, 25, a fifth pipeline, 26, a centrifuge blanking port 27, a centrifuge scraper conveyor, 28, a filter press blanking machine, 29, a filter press conveyor, 30, a belt conveyor, 31, a PAC automatic medicine adding machine, 32, PAM automatic medicine adding machine 33, an eighth valve, 34. the third valve, 35, the fourth valve, 36, the fifth valve, 37, the first flowmeter, 38, the second flowmeter, 39, the third flowmeter, 40, the fourth flowmeter, 41, the first centrifugal pump, 42, the second centrifugal pump, 43, the third centrifugal pump, 44, the sixth pipeline, 45, the seventh pipeline, 46, the eighth pipeline, 47, the ninth pipeline, 48, the tenth pipeline, 50, the eleventh pipeline, 51, the twelfth pipeline, 52, the thirteenth pipeline, 53, the fourteenth pipeline, 54, the fifteenth pipeline, 55, the sixteenth pipeline, 56, the seventeenth pipeline, 57, the eighteenth pipeline, 58, the nineteenth pipeline 59, the twentieth pipeline, 60, the twenty-first pipeline, 61, the twenty-second pipeline, 62, the twenty-third pipeline.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a conventional concentration coal slurry dewatering system of long distance tube transportation, as shown in figure 1, including the pulp storage tank 1, the pulp storage tank 1 is connected with the feed inlet of a first centrifugal pump 41 through a sixth pipeline 44, the discharge gate of the first centrifugal pump 41 is connected with the inlet of a centrifuge feeding buffer barrel 2 through a seventh pipeline 45, the overflow outlet of the centrifuge feeding buffer barrel 2 is connected with a centrifuge accident barrel 3 through a twenty-first pipeline 60 after passing through a first pipeline 21, the outlet of the centrifuge feeding buffer barrel 2 can enter a second pipeline 22 and a third pipeline 23 respectively through a twentieth pipeline 59, the second pipeline 22 is provided with a first valve 14, the first pipeline 21 and the second pipeline 22 finally join to form the twenty-first pipeline 60, the outlet of the centrifuge accident barrel 3 is connected with the inlet of a second centrifugal pump 42 through an eighth pipeline 46, the outlet of the second centrifugal pump 42 is connected with the inlet of the feeding buffer barrel 2 through a pipeline, the outlet of the centrifuge feeding buffer barrel 2 is also connected with the inlet of the screen sedimentation centrifuge 4 through a twentieth pipeline 59 and a third pipeline 23, the third pipeline 23 is provided with a second valve 15, the outlets of the screen section and the centrifugate section of the screen sedimentation centrifuge 4 are respectively connected with the inlet of the centrifugate barrel 5 through a ninth pipeline 47 and a tenth pipeline 48, the coal slime generated by the screen sedimentation centrifuge 4 is discharged onto a centrifuge scraper conveyor 27 through a centrifuge discharge port 26, and the centrifuge scraper conveyor 27 is connected with the coal storage yard 12 through a belt conveyor 30;
an outlet of the centrifugate barrel 5 is connected with a section of concentration adjusting well 6, an outlet of the section of concentration adjusting well 6 is respectively connected with a section of concentrator 7 and a section of concentration adjusting well 8 through a fifth pipeline 25 and a fourth pipeline 24, a fourth valve 17 is arranged on the fifth pipeline 25, a third valve 16 is arranged on the fourth pipeline 24, the section of concentration adjusting well 6 is connected with a PAC automatic dosing machine 31 through a sixteenth pipeline 55, an eighth valve 33 and a first flowmeter 37 are arranged on the sixteenth pipeline 55, the section of concentration adjusting well 6 is connected with a PAM automatic dosing machine 32 through an eighteenth pipeline 57, a tenth valve 35 and a third flowmeter 39 are arranged on the eighteenth pipeline 57, supernatant of the section of concentrator 7 is connected with an inlet of the section of concentration adjusting well 8 through a twelfth pipeline 61, the section of concentration adjusting well 8 is connected with the PAC automatic dosing machine 31 through a seventeenth pipeline 56, a ninth valve 34 and a second flowmeter 38 are arranged on the seventeenth pipeline 56, the second-stage concentration adjusting well 8 is further connected with the PAM automatic dosing machine 32 through a nineteenth pipeline 58, an eleventh valve 36 and a fourth flow meter 40 are arranged on the nineteenth pipeline 58, the outlet of the second-stage concentration well 8 is connected with the second-stage concentrator 9 through a pipeline, a sludge discharge port at the bottom of the first-stage concentrator 7 is connected with one inlet of a filter press feeding stirring barrel 10 through an eleventh pipeline 50, a sludge discharge port at the bottom of the second-stage concentrator 9 is connected with the other inlet of the filter press feeding stirring barrel 10 through a twelfth pipeline 51, the outlet of the filter press feeding stirring barrel 10 is connected with the inlet of a filter press 11 through a thirteenth pipeline 52, a fifth valve 18 is arranged on the eleventh pipeline 50, a sixth valve 19 is arranged on the twelfth pipeline 51, a seventh valve 20 is arranged on the thirteenth pipeline 52, coal slime generated by the filter press 11 is discharged onto a filter press scraper conveyor 29 through a filter press discharging port 28, and the scraper conveyor 29 is connected with the coal storage yard 12. The press waste water produced by the filter press 11 is connected to the inlet of the third centrifugal pump 43 through a fourteenth piping 53, and the outlet of the third centrifugal pump 43 is connected to the first thickening adjustment well 6 through a fifteenth piping 54. The supernatant liquid at the top of the two-stage thickener 9 is connected with the coal slime wastewater treatment station 13 through a twenty-third pipeline 62.
The centrifugal liquid feeding buffer barrel 2 is connected with the first centrifugal pump 41, the pipeline and the slurry storage tank 1 and mainly used for enabling the screen sedimentation centrifuge 4 to stably feed and homogenize coal slurry; the first-stage concentration adjusting well 6 can adjust water quantity and water quality by adding drugs, so that the sedimentation efficiency of slime water entering the first-stage concentrator 7 is improved; the secondary thickener 9 is used for adjusting water quality; the filter press feeding stirring barrel 10 can stably provide uniform coal slurry needing filter pressing and dehydration for the filter press 11; the coal storage yard 12 is used for storing the coal slurry dehydrated by the screen sedimentation centrifuge 4 and the filter press 11; the filter press 11 operates in an intermittent manner.
The utility model relates to a dewatering system of conventional concentration coal slurry of long distance pipe-line transportation, this system can realize simultaneously that coarse grain coal slime and fine particle coal slime retrieve high-efficient recovery, carry out the preliminary sedimentation to coal slime waste water simultaneously, reduce the load at follow-up coal slime waste water treatment station. In addition, the utility model forms an internal circulation between the centrifuge feeding buffer barrel 2 and the centrifuge accident barrel 3, which can ensure that the slurry feeding of the screen sedimentation centrifuge 4 is qualified and stable, and can ensure that the coal slurry can not overflow or enter the screen sedimentation centrifuge 4 when an accident or emergency occurs, thereby causing the waste of coal slurry resources and the unstable working efficiency of the screen sedimentation centrifuge 4; finally, two adjusting wells are arranged in front of the first-stage thickener 7 and the second-stage thickener 8, so that the reagent can be added in advance to prevent uneven dosing in the thickeners and accelerate the sedimentation speed of the coal slime wastewater.
The dehydration method for the coal slurry with the conventional concentration by long-distance pipeline transportation adopts the dehydration system for the coal slurry with the conventional concentration by pipeline transportation, and is implemented according to the following method:
step 1, storing the coal slurry with the conventional pipe transportation concentration into a slurry storage tank 1, and enabling the coal slurry in the pipe transportation in the slurry storage tank 1 to enter a first centrifugal pump 41 through a sixth pipeline 44; then the materials are conveyed into a centrifuge feeding buffer barrel 2 through a seventh pipeline 45, when the centrifuge feeding buffer barrel 2 overflows, the centrifuge is conveyed to a centrifuge accident barrel 3, an outlet of the centrifuge accident barrel 3 is connected with an inlet of a second centrifugal pump 42 through an eighth pipeline 46, and an outlet of the second centrifugal pump 42 is connected with an inlet of the centrifuge feeding buffer barrel 2 through a pipeline, so that internal circulation between the centrifuge buffer barrel 2 and the centrifuge accident barrel 3 is formed;
overflow liquid of the centrifuge feeding buffer barrel 2 enters the centrifuge accident barrel 3, so that the centrifuge feeding buffer barrel 2 can uniformly and quantitatively feed the screen sedimentation centrifuge 4, coal slurry in the centrifuge accident barrel 3 is pumped into the centrifuge feeding buffer barrel 2 through the second centrifugal pump 42 after incoming materials are stable, and is uniformly mixed with slurry in the slurry storage tank 1 and then is fed into the screen sedimentation centrifuge 4 for dehydration; meanwhile, the outlet of the centrifuge feeding buffer barrel 2 can be communicated with the centrifuge accident barrel 3 and can also enter the screen sedimentation centrifuge 4, if the material from the centrifuge feeding buffer barrel 2 is extremely unstable or the coal slurry property is poor, the material can enter the centrifuge accident barrel 3, and then the material circularly flows back to the centrifuge feeding buffer barrel 2 through the centrifuge accident barrel 3 to be fully and uniformly mixed with the newly-fed coal slurry; if the incoming material of the centrifuge feeding buffer barrel 2 is stable, the discharged material directly enters a screen sedimentation centrifuge 4 for dehydration;
step 3, introducing the slime water in the centrifugate barrel 5 into a section of concentration regulating well 6, receiving the medicines in the PAC automatic medicine feeder 31 and the PAM automatic medicine feeder 32, and when the slime water concentration exceeds 100g/L, adding 20g/m of PAC3When the concentration of the slime water is 60-100 g/L, the addition amount of PAC is 10g/m3(ii) a The mass of PAM is 0.3-0.5% of the dry coal slime, namely 3-5kg of polyacrylamide is added into 1t of dry coal slime; the coal slime water and the drugs are fully and uniformly mixed, when the concentration of the coal slime water in the first-stage concentration adjusting well 6 is lower than 30g/L, the fourth valve 17 is closed, the third valve 16 is opened, the coal slime water directly enters the second-stage concentration adjusting well 8, the first-stage concentration can be omitted, the purposes of saving energy and reducing consumption are achieved, when the concentration of the coal slime water in the first-stage concentration adjusting well 6 is higher than 30g/L, the third valve 16 is closed, the fourth valve 17 is opened, the coal slime water enters the first-stage concentrator 7 and is concentrated, supernatant fluid automatically flows into the second-stage concentration adjusting well 8, the coal slime at the bottom of the first-stage concentrator 7 enters the mixing barrel 10 of the filter press through an intermittent switch of the fifth valve 18, the second-stage concentration adjusting well 8 can receive the coal slime water in the first-stage concentration adjusting well 6 and the supernatant fluid of the first-stage concentrator 7 and can be connected with drugs in the PAC automatic drug feeder 31 and, when the water quality is poor, namely the concentration of slime water exceeds 100g/l, the addition amount of PAC is 20g/m3(ii) a The quality of the water is good, namely when the concentration of the slime water is 60-100 g/l, the addition amount of PAC is 10g/m3(ii) a The mass of PAM is 0.3-0.5% of the mass of dry coal slime, namely 3-5kg of polyacrylamide is added into 1t of dry coal slime; the coal slurry and the medicament are fully and uniformly mixed and then enter a secondary thickener 9, the secondary thickener 9 further concentrates the obtained coal slurry, the supernatant of the secondary thickener 9 enters a coal slurry wastewater treatment station 13, the underflow finally enters a filter press stirring barrel 10 through a sixth valve 19 intermittent switch, fine-particle coal slurry is obtained after passing through a filter press 11, the particle size of the fine-particle coal slurry is less than 0.045mm and is stored in a coal storage yard 12, and the squeezed wastewater is lifted to a primary concentration regulating well 6 through a third centrifugal pump 43.
The utility model discloses a defeated conventional concentration coal slurry dewatering system of long distance pipe, through the reasonable cooperation of storing up thick liquid jar, centrifuge pan feeding buffer tank, centrifuge accident bucket, screen cloth sedimentation centrifuge, concentrated regulating well, concentrated machine, pressure filter, doser, coal yard and coal slime waste water treatment station and a plurality of valve for when coal slurry nature changes, can in time adjust production technology, both guaranteed product quality, guaranteed the output of product again, messenger's production can stably go on. Meanwhile, two stages of concentration are arranged, so that the coal slime water can be fully concentrated and settled, the treatment load of subsequent coal slime wastewater is greatly reduced, and the subsequent coal slime wastewater treatment is ensured to reach the standard.
The utility model discloses a defeated conventional concentration coal thick liquid dewatering system of long distance pipe, simple structure, simple to operate provides the pan feeding steadily, and dewatering effect is good, and the dehydration product moisture content is low, and furthest's recovery coal slime, and can be according to the quantity that comes the thick liquid and the nimble practicality of switching two sections concentrated machines of quality, improved the rate of recovery of defeated coal thick liquid of pipe.
Claims (7)
1. The long-distance pipe-conveying coal slurry dewatering system with the conventional concentration is characterized by comprising a slurry storage tank (1), wherein the slurry storage tank (1) is connected with a first centrifugal pump (41) through a sixth pipeline (44), a discharge hole of the first centrifugal pump (41) is connected with an inlet of a centrifuge feeding buffer barrel (2) through a seventh pipeline (45), an overflow outlet of the centrifuge feeding buffer barrel (2) is connected with a centrifuge accident barrel (3) through a first pipeline (21) and a twenty-first pipeline (60), an outlet of the centrifuge accident barrel (3) is connected with a second centrifugal pump (42) through an eighth pipeline (46), the second centrifugal pump (42) is connected with an inlet of the centrifuge feeding buffer barrel (2) through a pipeline, an outlet of the centrifuge feeding buffer barrel (2) is also connected with an inlet of a screen sedimentation centrifuge (4) through a twentieth pipeline (59) and a third pipeline (23), the twenty-first pipeline (60) is connected with the centrifuge accident barrel (3) through a second pipeline (22) and a twenty-first pipeline (60), the outlet of the screen section and the centrifugate section of the screen sedimentation centrifuge (4) are respectively connected with the inlet of the centrifugate barrel (5) through a ninth pipeline (47) and a tenth pipeline (48), the outlet of the centrifugate barrel (5) is connected with a first section concentration regulating well (6), the outlet of the first section concentration regulating well (6) is respectively connected with a first section concentrator (7) and a second section concentration regulating well (8) through a fifth pipeline (25) and a fourth pipeline (24), the first section concentrator (7) is connected with the inlet of the second section concentration regulating well (8) through a twelfth pipeline (61), the outlet of the second section concentration regulating well (8) is connected with a second section concentrator (9) through a pipeline, the sludge discharge port at the bottom of the first section concentrator (7) is connected with the inlet of the filter press feeding stirring barrel (10) through an eleventh pipeline (50), the sludge discharge port at the bottom of the two-stage thickener (9) is connected with the inlet of the filter press feeding stirring barrel (10) through a twelfth pipeline (51), and the outlet of the filter press feeding stirring barrel (10) is connected with the inlet of the filter press (11) through a thirteenth pipeline (52).
2. A long-haul pipeline normal concentration coal slurry dewatering system according to claim 1, wherein the filter press (11) is connected with an inlet of a third centrifugal pump (43) through a fourteenth pipeline (53), and an outlet of the third centrifugal pump (43) is connected with a section of the concentration adjusting well (6) through a fifteenth pipeline (54).
3. The long-distance pipe-conveying coal slurry dewatering system with the conventional concentration is characterized in that the first-section concentration adjusting well (6) is connected with a PAC automatic dosing machine (31) through a sixteenth pipeline (55), the first-section concentration adjusting well (6) is connected with a PAM automatic dosing machine (32) through an eighteenth pipeline (57), the second-section concentration adjusting well (8) is connected with the PAC automatic dosing machine (31) through a seventeenth pipeline (56), and the second-section concentration adjusting well (8) is further connected with the PAM automatic dosing machine (32) through a nineteenth pipeline (58).
4. The long-distance pipe-conveying coal slurry dehydration system with the normal concentration according to claim 3, characterized in that an eighth valve (33) and a first flowmeter (37) are arranged on the sixteenth pipeline (55), a tenth valve (35) and a third flowmeter (39) are arranged on the eighteenth pipeline (57), a ninth valve (34) and a second flowmeter (38) are arranged on the seventeenth pipeline (56), and an eleventh valve (36) and a fourth flowmeter (40) are arranged on the nineteenth pipeline (58).
5. A long haul pipeline normal concentration coal slurry dewatering system according to claim 1, wherein the top of the secondary thickener (9) is connected to the coal slurry wastewater treatment station (13) through a twenty-third pipeline (62).
6. The long-distance pipeline transportation coal slurry dewatering system with the conventional concentration is characterized in that the screen settlement centrifuge (4) is connected with a centrifuge scraper conveyor (27) through a centrifuge blanking port (26), and the centrifuge scraper conveyor (27) is connected with the coal storage yard (12) through a belt conveyor (30); the filter press (11) is connected with a filter press scraper conveyor (29) through a filter press blanking port (28), and the filter press scraper conveyor (29) is connected with the coal storage yard (12) through a belt conveyor (30).
7. The long-distance pipeline transportation coal slurry dehydration system with the normal concentration according to claim 1 is characterized in that a first valve (14) is arranged on the second pipeline (22), a second valve (15) is arranged on the third pipeline (23), a third valve (16) is arranged on the fourth pipeline (24), a fourth valve (17) is arranged on the fifth pipeline (25), a fifth valve (18) is arranged on the eleventh pipeline (50), a sixth valve (19) is arranged on the twelfth pipeline (51), and a seventh valve (20) is arranged on the thirteenth pipeline (52).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021350503.9U CN212655671U (en) | 2020-07-10 | 2020-07-10 | Long-distance pipe-conveying conventional-concentration coal slurry dewatering system |
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| CN202021350503.9U CN212655671U (en) | 2020-07-10 | 2020-07-10 | Long-distance pipe-conveying conventional-concentration coal slurry dewatering system |
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