Fine slag slurry treatment system

Abstract

The utility model discloses a fine slag slurry treatment system. The fine slag slurry treatment system comprises a clarifying tank, a centrifugal machine feeding pump and a fine slag centrifugal machine, the clarifying tank comprises a first clarifying tank; the centrifugal machine feeding pump comprises a first centrifugal machine feeding pump and a second centrifugal machine feeding pump; the fine slag centrifugal machine comprises a first fine slag centrifugal machine and a second fine slag centrifugal machine; fine slag slurry is introduced into the input end of the first clarifying tank, and the output end of the first clarifying tank is respectively connected with the input end of the first centrifugal machine feeding pump and the input end of the second centrifugal machine feeding pump; the output end of the first centrifugal machine feeding pump is connected with the first fine slag centrifugal machine and the second fine slag centrifugal machine. The output end of the second centrifugal machine feeding pump is connected with the first fine slag centrifugal machine and the second fine slag centrifugal machine. When the equipment is overhauled, the upstream equipment and the downstream equipment of the fine slag slurry treatment system normally operate, so that the treatment efficiency of the fine slag slurry is improved.

Description

Technical Field

[0001] The present application relates to the technical field of coal chemical processing systems, and in particular to a fine slurry processing system. Background Art

[0002] In the field of coal chemical industry, the water-coal slurry gasification process adopts multi-material slurry pressurized gasification technology. After slurrying, the raw coal undergoes partial oxidation reaction with external oxygen to produce raw coal gas. After partial transformation, it enters low-temperature methanol washing to obtain coal-based synthesis gas for methanol production.

[0003] The black water discharged from the gasification section of the coal chemical enterprise is sent to the clarification tank after flash evaporation and concentration. The fine slag slurry produced is then sent to the centrifuge through the centrifuge feed pump to separate the fine slag for external transmission. When the fine slag centrifuge or the centrifuge feed pump is under maintenance, how to distribute the fine slag slurry through the available centrifuge feed pump and centrifuge and ensure that the device maintains high-load operation has become a practical problem that needs to be solved. The utility model solves this practical operation problem through the flexible distribution of the centrifuge feed pump and the centrifuge and the increase of the fine slag slurry sending process to the coal mill. Utility Model Content

[0004] The embodiment of the present application provides a fine slag slurry processing system, which solves the problem of fine slag slurry processing under high load operation of the gasification device when any centrifuge feed pump or any fine slag centrifuge is under maintenance in the prior art. It is achieved that when the equipment is under maintenance, the upstream and downstream equipment of the fine slag slurry processing system operates normally, thereby improving the processing efficiency of the fine slag slurry.

[0005] An embodiment of the utility model provides a fine slag slurry processing system, comprising a clarification tank, a centrifuge feeding pump and a fine slag centrifuge; the clarification tank comprises a first clarification tank; the centrifuge feeding pump comprises a first centrifuge feeding pump and a second centrifuge feeding pump; the fine slag centrifuge comprises a first fine slag centrifuge and a second fine slag centrifuge; the fine slag slurry is introduced into the input end of the first clarification tank, and the output end of the first clarification tank is respectively connected to the input end of the first centrifuge feeding pump and the input end of the second centrifuge feeding pump; the output end of the first centrifuge feeding pump is respectively connected to the first fine slag centrifuge and the second fine slag centrifuge; the output end of the second centrifuge feeding pump is respectively connected to the first fine slag centrifuge and the second fine slag centrifuge.

[0006] In a possible implementation, the clarification tank also includes a second clarification tank; the centrifuge feed pump also includes a third centrifuge feed pump; the fine slag slurry is introduced into the input end of the second clarification tank, and the output end of the second clarification tank is connected to the input end of the third centrifuge feed pump; the output end of the third centrifuge feed pump is respectively connected to the first fine slag centrifuge and the second fine slag centrifuge.

[0007] In a possible implementation, the fine slag centrifuge also includes a third fine slag centrifuge; the output end of the first centrifuge feed pump, the output end of the second centrifuge feed pump and the output end of the third centrifuge feed pump are all connected to the third fine slag centrifuge.

[0008] In a possible implementation, the centrifuge feed pump also includes a fourth centrifuge feed pump; the input end of the fourth centrifuge feed pump is connected to the second clarification tank; the output end of the fourth centrifuge feed pump is connected to the first fine slag centrifuge, the second fine slag centrifuge and the third fine slag centrifuge.

[0009] In a possible implementation, a coal mill is further included; the output end of the first centrifuge feed pump is also connected to the coal mill.

[0010] In a possible implementation, it also includes a main valve; the main valve includes a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, an eighth valve and a twelfth valve; the first valve, the third valve and the fourth valve are sequentially arranged between the first centrifuge feeding pump and the first fine slag centrifuge; the second valve is arranged between the second centrifuge feeding pump and the first fine slag centrifuge; one end of the fifth valve is connected between the third valve and the fourth valve, and the other end of the fifth valve is connected to one end of the twelfth valve; the other end of the twelfth valve is connected to the second fine slag centrifuge; the sixth valve and the eighth valve are sequentially arranged between the second centrifuge feeding pump and the second fine slag centrifuge.

[0011] In a possible implementation, the main valve further includes a seventh valve, an eleventh valve, a fourteenth valve, a fifteenth valve, a sixteenth valve, an eighteenth valve and a nineteenth valve; one end of the seventh valve is connected to the output end of the third centrifuge feed pump, and the other end of the seventh valve is connected between the sixth valve and the eighth valve; one end of the eleventh valve is connected between the fifth valve and the twelfth valve, and the other end of the eleventh valve is connected between the sixteenth valve and the eighteenth valve; the fourteenth valve, the sixteenth valve and the eighteenth valve are connected in sequence between the third centrifuge feed pump and the third fine slag centrifuge (33); one end of the fifteenth valve is connected to the output end of the fourth centrifuge feed pump, and the other end of the fifteenth valve is connected between the fourteenth valve and the sixteenth valve; the nineteenth valve is also connected between the output end of the first centrifuge feed pump and the coal mill.

[0012] One or more technical solutions provided by this application have at least the following technical effects:

[0013] The embodiment of the utility model adopts a clarification tank, a centrifuge feeding pump and a fine slag centrifuge, the clarification tank includes a first clarification tank, the centrifuge feeding pump includes a first centrifuge feeding pump and a second centrifuge feeding pump, the fine slag centrifuge includes a first fine slag centrifuge and a second fine slag centrifuge, the input end of the first clarification tank is fed with fine slag slurry, the output end of the first clarification tank is connected with the first centrifuge feeding pump and the second centrifuge feeding pump, so that the fine slag slurry in the first clarification tank can be transported to the first centrifuge feeding pump and the second centrifuge feeding pump through a pipeline; the output end of the first centrifuge feeding pump is connected with the first fine slag centrifuge and the second fine slag centrifuge respectively The first centrifuge feed pump is connected so that the fine slag slurry can be transported to the first fine slag centrifuge and the second fine slag centrifuge for processing; the output end of the second centrifuge feed pump is respectively connected to the first fine slag centrifuge and the second fine slag centrifuge, so that the second centrifuge feed pump can transport the fine slag slurry to the first fine slag centrifuge and the second fine slag centrifuge for processing; when the first centrifuge feed pump fails and needs maintenance, the second centrifuge feed pump can also process the fine slag slurry in the first clarification tank, and can transport the fine slag slurry to the first fine slag centrifuge and the second fine slag centrifuge for processing, thereby achieving normal operation of upstream and downstream equipment. The present application solves the problem of handling fine slag slurry under high-load operation of the gasification device when any centrifuge feed pump or any fine slag centrifuge is under maintenance. The present application realizes the normal operation of upstream and downstream equipment of the fine slag slurry processing system when the equipment is under maintenance, thereby improving the processing efficiency of fine slag slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of a fine slurry processing system provided in an embodiment of the present application.

[0016] Icons: 1-clarification tank; 11-first clarification tank; 12-second clarification tank; 2-centrifuge feed pump; 21-first centrifuge feed pump; 22-second centrifuge feed pump; 23-third centrifuge feed pump; 24-fourth centrifuge feed pump; 3-fine slag centrifuge; 31-first fine slag centrifuge; 32-second fine slag centrifuge; 33-third fine slag centrifuge; 4-coal mill; 5-main valve; 501-first valve; 502-second valve; 503 - the third valve; 504 - the fourth valve; 505 - the fifth valve; 506 - the sixth valve; 507 - the seventh valve; 508 - the eighth valve; 509 - the ninth valve; 510 - the tenth valve; 511 - the eleventh valve; 512 - the twelfth valve; 513 - the thirteenth valve; 514 - the fourteenth valve; 515 - the fifteenth valve; 516 - the sixteenth valve; 517 - the seventeenth valve; 518 - the eighteenth valve; 519 - the nineteenth valve. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0019] The present invention provides a fine slurry processing system. Figure 1As shown, it includes a clarification tank 1, a centrifuge feed pump 2 and a fine slag centrifuge 3; the clarification tank 1 includes a first clarification tank 11; the centrifuge feed pump 2 includes a first centrifuge feed pump 21 and a second centrifuge feed pump 22; the fine slag centrifuge 3 includes a first fine slag centrifuge 31 and a second fine slag centrifuge 32; the fine slag slurry is introduced into the input end of the first clarification tank 11, and the output end of the first clarification tank 11 is respectively connected to the input end of the first centrifuge feed pump 21 and the input end of the second centrifuge feed pump 22; the output end of the first centrifuge feed pump 21 is respectively connected to the first fine slag centrifuge 31 and the second fine slag centrifuge 32; the output end of the second centrifuge feed pump 22 is respectively connected to the first fine slag centrifuge 31 and the second fine slag centrifuge 32.

[0020] Exemplarily, the fine slag slurry in the first clarification tank 11 can be transported to the first fine slag centrifuge 31 and the second fine slag centrifuge 32 for processing through the first centrifuge feed pump 21 and the second centrifuge feed pump 22; the output end of the first clarification tank 11 is connected with the input end of the first centrifuge feed pump 21 and the input end of the second centrifuge feed pump 22, and the output end of the first centrifuge feed pump 21 is respectively connected with the first fine slag centrifuge 31 and the second fine slag centrifuge 32; when any centrifuge feed pump 2 or any fine slag centrifuge 3 fails, it will not affect the operation of other upstream and downstream equipment, and the fine slag slurry processing work can be carried out normally.

[0021] In the present application embodiment, Figure 1 As shown, the clarification tank 1 also includes a second clarification tank 12; the centrifuge feed pump 2 also includes a third centrifuge feed pump 23; the fine slag slurry is introduced into the input end of the second clarification tank 12, and the output end of the second clarification tank 12 is connected to the input end of the third centrifuge feed pump 23; the output end of the third centrifuge feed pump 23 is respectively connected to the first fine slag centrifuge 31 and the second fine slag centrifuge 32.

[0022] Exemplarily, the system is provided with a second clarification tank 12 and a third centrifuge feed pump 23, and the third centrifuge feed pump 23 is respectively connected to the first fine slag centrifuge 31 and the second fine slag centrifuge 32. When the second clarification tank 12 is working, the fine slag slurry in the second clarification tank 12 can be transported to the first fine slag centrifuge 31 and the second fine slag centrifuge 32 for processing through the third centrifuge feed pump 23. When any fine slag centrifuge 3 fails, it will not affect the operation of other upstream and downstream equipment, and the fine slag slurry processing work can be carried out normally.

[0023] In the present application embodiment, Figure 1 As shown, the fine slag centrifuge 3 also includes a third fine slag centrifuge 33 ; the output end of the first centrifuge feed pump 21 , the output end of the second centrifuge feed pump 22 and the output end of the third centrifuge feed pump 23 are all connected to the third fine slag centrifuge 33 .

[0024] Exemplarily, the output end of the first centrifuge feed pump 21 is also connected to the third fine slag centrifuge 33, and the fine slag slurry in the first clarification tank 11 can be transported to the third fine slag centrifuge 33 for processing through the first centrifuge feed pump 21; the output end of the second centrifuge feed pump 22 is also connected to the third fine slag centrifuge 33, and the fine slag slurry in the first clarification tank 11 can be transported to the third fine slag centrifuge 33 for processing through the second centrifuge feed pump 22; the output end of the third centrifuge feed pump 23 is also connected to the third fine slag centrifuge 33, and the fine slag slurry in the second clarification tank 12 can also be transported to the third fine slag centrifuge 33 for processing through the third centrifuge feed pump 23. When any centrifuge feed pump 2 or any fine slag centrifuge 3 fails, it will not affect the operation of other upstream and downstream equipment, and the fine slag slurry processing work can be carried out normally.

[0025] In the present application embodiment, Figure 1 As shown, the centrifuge feed pump 2 also includes a fourth centrifuge feed pump 24; the input end of the fourth centrifuge feed pump 24 is connected to the second clarification tank 12; the output end of the fourth centrifuge feed pump 24 is connected to the first fine slag centrifuge 31, the second fine slag centrifuge 32 and the third fine slag centrifuge 33.

[0026] Exemplarily, the output end of the second clarification tank 12 is also connected to a fourth centrifuge feed pump 24, and the fourth centrifuge feed pump 24 is respectively connected to the first fine slag centrifuge 31, the second fine slag centrifuge 32 and the third fine slag centrifuge 33. The fine slag slurry in the second clarification tank 12 can also be transported to the first fine slag centrifuge 31, the second fine slag centrifuge 32 and the third fine slag slurry for processing through the fourth centrifuge feed pump 24.

[0027] In the present application embodiment, Figure 1 As shown, a coal mill 4 is also included; the output end of the first centrifuge feed pump 21 is also connected to the coal mill 4.

[0028] Exemplarily, the system is further provided with a coal mill 4 at the output end of the first centrifuge feed pump 21 . The coal mill 4 can recover carbon in the fine slurry. The operator can control the treatment method of the fine slurry through the main valve 5 .

[0029] For example, Figure 1As shown, the fine slag slurry in the first clarification tank 11 can be transported to the first fine slag centrifuge 31, the second fine slag centrifuge 32, the third fine slag centrifuge 33 and the coal pulverizer 4 for treatment through the first centrifuge feeding pump 21; the fine slag slurry in the first clarification tank 11 can be transported to the first fine slag centrifuge 31, the second fine slag centrifuge 32 and the third fine slag centrifuge 33 for treatment through the second centrifuge feeding pump 22; the fine slag slurry in the second clarification tank 12 can be transported to the first fine slag centrifuge 31, the second fine slag centrifuge 32 and the third fine slag centrifuge 33 for treatment through the third centrifuge feeding pump 23; the fine slag slurry in the second clarification tank 12 can be transported to the first fine slag centrifuge 31, the second fine slag centrifuge 32 and the third fine slag centrifuge 33 for treatment through the fourth centrifuge feeding pump 24. When any centrifuge feed pump 2 or any fine slag centrifuge 3 fails, it will not affect the operation of other upstream and downstream equipment, and the fine slag slurry can be processed normally. Through the process of the newly added coal mill 4, the carbon in the fine slag slurry can also be recovered.

[0030] In the present application embodiment, Figure 1 As shown, it also includes a main valve 5; the main valve 5 includes a first valve 501, a second valve 502, a third valve 503, a fourth valve 504, a fifth valve 505, a sixth valve 506, an eighth valve 508 and a twelfth valve 512; the first valve 501, the third valve 503 and the fourth valve 504 are sequentially arranged between the first centrifuge feeding pump 21 and the first fine slag centrifuge 31; the second valve 502 is arranged between the second centrifuge feeding pump 22 and the first fine slag centrifuge 31; one end of the fifth valve 505 is connected between the third valve 503 and the fourth valve 504, and the other end of the fifth valve 505 is connected to one end of the twelfth valve 512; the other end of the twelfth valve 512 is connected to the second fine slag centrifuge 32; the sixth valve 506 and the eighth valve 508 are sequentially arranged between the second centrifuge feeding pump 22 and the second fine slag centrifuge 32.

[0031] In the present application embodiment, Figure 1As shown, the main valve 5 also includes a seventh valve 507, an eleventh valve 511, a fourteenth valve 514, a fifteenth valve 515, a sixteenth valve 516, an eighteenth valve 518 and a nineteenth valve 519; one end of the seventh valve 507 is connected to the output end of the third centrifuge feed pump 23, and the other end of the seventh valve 507 is connected between the sixth valve 506 and the eighth valve 508; one end of the eleventh valve 511 is connected between the fifth valve 505 and the twelfth valve 512, and the other end of the eleventh valve 511 is connected to the output end of the third centrifuge feed pump 23. The end is connected between the sixteenth valve 516 and the eighteenth valve 518; the fourteenth valve 514, the sixteenth valve 516 and the eighteenth valve 518 are connected in sequence between the third centrifuge feed pump 23 and the third fine slag centrifuge 33; one end of the fifteenth valve 515 is connected to the output end of the fourth centrifuge feed pump 24, and the other end of the fifteenth valve 515 is connected between the fourteenth valve 514 and the sixteenth valve 516; a nineteenth valve 519 is also connected between the output end of the first centrifuge feed pump 21 and the coal mill 4.

[0032] In the present application embodiment, Figure 1 As shown, the main valve 5 also includes a ninth valve 509, a tenth valve 510, a thirteenth valve 513 and a seventeenth valve 517; the ninth valve 509 and the tenth valve 510 are connected in sequence between the fifth valve 505 and the twelfth valve 512; the thirteenth valve 513 is connected between the seventh valve 507 and the output end of the third centrifuge feeding pump 23; the seventeenth valve 517 is connected to the side of the pipeline where the eleventh valve 511 is located close to the eighteenth valve 518; one end of the eleventh valve 511 is connected between the ninth valve 509 and the tenth valve 510, the other end of the eleventh valve 511 is connected to one end of the seventeenth valve 517, and the other end of the seventeenth valve 517 is connected between the sixteenth valve 516 and the eighteenth valve 518.

[0033] For example, the system can control the processing of the fine slag centrifuge 3 by controlling the main valve 5. Figure 1 As shown, the first centrifuge feed pump 21 is connected to the first fine slag centrifuge 31 through the first valve 501, the third valve 503 and the fourth valve 504; the first centrifuge feed pump 21 is connected to the second fine slag centrifuge 32 through the first valve 501, the third valve 503, the fifth valve 505, the ninth valve 509, the tenth valve 510 and the twelfth valve 512; the first centrifuge feed pump 21 is connected to the third fine slag centrifuge 33 through the first valve 501, the third valve 503, the fifth valve 505, the ninth valve 509, the eleventh valve 511, the seventeenth valve 517 and the eighteenth valve 518;

[0034] For example, Figure 1As shown, the second centrifuge feed pump 22 is connected to the first fine slag centrifuge 31 through the second valve 502, the third valve 503 and the fourth valve 504; the second centrifuge feed pump 22 is also connected to the first fine slag centrifuge 31 through the sixth valve 506, the eighth valve 508, the tenth valve 510, the ninth valve 509, the fifth valve 505 and the fourth valve 504; the second centrifuge feed pump 22 is connected to the second fine slag centrifuge 32 through the sixth valve 506, the eighth valve 508 and the twelfth valve 512; the second centrifuge feed pump 22 is also connected to the first fine slag centrifuge 31 through the second valve 502, the third valve 503, the tenth valve 510, the ninth valve 509, the fifth valve 505 and the fourth valve 504. The fifth valve 505, the ninth valve 509, the tenth valve 510 and the twelfth valve 512 are connected to the second fine slag centrifuge 32; the second centrifuge feed pump 22 is connected to the third fine slag centrifuge 33 through the second valve 502, the third valve 503, the fifth valve 505, the ninth valve 509, the eleventh valve 511, the seventeenth valve 517 and the eighteenth valve 518; the second centrifuge feed pump 22 is also connected to the third fine slag centrifuge 33 through the sixth valve 506, the eighth valve 508, the tenth valve 510, the eleventh valve 511, the seventeenth valve 517 and the eighteenth valve 518;

[0035] For example, Figure 1 As shown, the third centrifuge feed pump 23 is connected to the first fine slag centrifuge 31 through the fourteenth valve 514, the sixteenth valve 516, the seventeenth valve 517, the eleventh valve 511, the ninth valve 509, the fifth valve 505 and the fourth valve 504; the third centrifuge feed pump 23 is also connected to the first fine slag centrifuge 31 through the thirteenth valve 513, the seventh valve 507, the eighth valve 508, the tenth valve 510, the ninth valve 509, the fifth valve 505 and the fourth valve 504; the third centrifuge feed pump 23 is connected to the first fine slag centrifuge 31 through the fourteenth valve 514, the sixteenth valve 516, the seventeenth valve 517, the eleventh valve 511, the tenth valve 510 and the twelfth valve 512 are connected to the second fine slag centrifuge 32; the third centrifuge feeding pump 23 is also connected to the second fine slag centrifuge 32 through the thirteenth valve 513, the seventh valve 507, the eighth valve 508 and the twelfth valve 512; the third centrifuge feeding pump 23 is connected to the third fine slag centrifuge 33 through the fourteenth valve 514, the sixteenth valve 516 and the eighteenth valve 518; the third centrifuge feeding pump 23 is also connected to the third fine slag centrifuge 33 through the thirteenth valve 513, the seventh valve 507, the eighth valve 508, the tenth valve 510, the eleventh valve 511, the seventeenth valve 517 and the eighteenth valve 518.

[0036] For example, Figure 1As shown, the fourth centrifuge feed pump 24 is connected to the first fine slag centrifuge 31 through the fifteenth valve 515, the sixteenth valve 516, the seventeenth valve 517, the eleventh valve 511, the ninth valve 509, the fifth valve 505 and the fourth valve 504; the fourth centrifuge feed pump 24 is connected to the second fine slag centrifuge 32 through the fifteenth valve 515, the sixteenth valve 516, the seventeenth valve 517, the eleventh valve 511, the tenth valve 510 and the twelfth valve 512; the fourth centrifuge feed pump 24 is connected to the third fine slag centrifuge 33 through the fifteenth valve 515, the sixteenth valve 516 and the eighteenth valve 518.

[0037] For example, Figure 1 As shown, the first centrifuge feed pump 21 is also connected to the coal mill 4 through the nineteenth valve 519 .

[0038] The present application includes a pipeline with a main valve 5, which can enable any centrifuge feed pump 2 to deliver fine slag slurry to any fine slag centrifuge 3, or enable the first centrifuge feed pump 21 to deliver fine slag slurry to the coal mill 4 for processing, thereby solving the problem of handling fine slag slurry when any centrifuge feed pump 2 or any fine slag centrifuge 3 is under maintenance and the gasification device is running at high load, and through the process of the coal mill 4, carbon in the fine slag slurry can also be recovered.

[0039] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0040] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A fine slurry processing system, characterized in that: It comprises a clarification tank (1), a centrifuge feed pump (2) and a fine slag centrifuge (3); The clarification tank (1) comprises a first clarification tank (11); The centrifuge feed pump (2) comprises a first centrifuge feed pump (21) and a second centrifuge feed pump (22); The fine slag centrifuge (3) comprises a first fine slag centrifuge (31) and a second fine slag centrifuge (32); The fine slag slurry is introduced into the input end of the first clarification tank (11), and the output end of the first clarification tank (11) is respectively connected to the input end of the first centrifuge feed pump (21) and the input end of the second centrifuge feed pump (22); The output end of the first centrifuge feed pump (21) is connected to the first fine slag centrifuge (31) and the second fine slag centrifuge (32) respectively; the output end of the second centrifuge feed pump (22) is connected to the first fine slag centrifuge (31) and the second fine slag centrifuge (32) respectively.

2. A fine slurry processing system according to claim 1, characterized in that: The clarification tank (1) further comprises a second clarification tank (12); the centrifuge feed pump (2) further comprises a third centrifuge feed pump (23); The fine slag slurry is introduced into the input end of the second clarification tank (12), and the output end of the second clarification tank (12) is connected to the input end of the third centrifuge feed pump (23); The output end of the third centrifuge feed pump (23) is connected to the first fine slag centrifuge (31) and the second fine slag centrifuge (32) respectively.

3. A fine slurry processing system according to claim 2, characterized in that: The fine slag centrifuge (3) further comprises a third fine slag centrifuge (33); The output end of the first centrifuge feed pump (21), the output end of the second centrifuge feed pump (22) and the output end of the third centrifuge feed pump (23) are all connected to the third fine slag centrifuge (33).

4. A fine slurry processing system according to claim 3, characterized in that: The centrifuge feed pump (2) further comprises a fourth centrifuge feed pump (24); The input end of the fourth centrifuge feed pump (24) is connected to the second clarification tank (12); the output end of the fourth centrifuge feed pump (24) is connected to the first fine slag centrifuge (31), the second fine slag centrifuge (32) and the third fine slag centrifuge (33).

5. A fine slurry processing system according to claim 4, characterized in that: It also includes a coal mill (4); the output end of the first centrifuge feed pump (21) is also connected to the coal mill (4).

6. A fine slurry processing system according to claim 5, characterized in that: It also includes a main valve (5); the main valve (5) includes a first valve (501), a second valve (502), a third valve (503), a fourth valve (504), a fifth valve (505), a sixth valve (506), an eighth valve (508) and a twelfth valve (512); The first valve (501), the third valve (503) and the fourth valve (504) are sequentially arranged between the first centrifuge feed pump (21) and the first fine slag centrifuge (31); The second valve (502) is arranged between the second centrifuge feed pump (22) and the first fine slag centrifuge (31); One end of the fifth valve (505) is connected between the third valve (503) and the fourth valve (504), and the other end of the fifth valve (505) is connected to one end of the twelfth valve (512); the other end of the twelfth valve (512) is connected to the second fine slag centrifuge (32); The sixth valve (506) and the eighth valve (508) are arranged in sequence between the second centrifuge feed pump (22) and the second fine slag centrifuge (32).

7. A fine slurry processing system according to claim 6, characterized in that: The main valve (5) further comprises a seventh valve (507), an eleventh valve (511), a fourteenth valve (514), a fifteenth valve (515), a sixteenth valve (516), an eighteenth valve (518) and a nineteenth valve (519); One end of the seventh valve (507) is connected to the output end of the third centrifuge feed pump (23), and the other end of the seventh valve (507) is connected between the sixth valve (506) and the eighth valve (508); One end of the eleventh valve (511) is connected between the fifth valve (505) and the twelfth valve (512), and the other end of the eleventh valve (511) is connected between the sixteenth valve (516) and the eighteenth valve (518); The fourteenth valve (514), the sixteenth valve (516) and the eighteenth valve (518) are sequentially connected between the third centrifuge feed pump (23) and the third fine slag centrifuge (33); One end of the fifteenth valve (515) is connected to the output end of the fourth centrifuge feed pump (24), and the other end of the fifteenth valve (515) is connected between the fourteenth valve (514) and the sixteenth valve (516); The nineteenth valve (519) is also connected between the output end of the first centrifuge feed pump (21) and the coal mill (4).

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