A separator for water-gas separation in a water-coal slurry gasifier

Abstract

The present invention belongs to the technical field of water-gas separation, and specifically relates to a separator for water-gas separation in a water-coal slurry gasifier. The upper part of the separator shell structure is elliptical, the middle part is cylindrical, and the lower part is inverted conical. It includes an ash retaining pipe, a water distribution pipe, a water distribution main pipe, a water spraying device, and an air intake pipe ash flushing pipe. The water-gas generated by the water-coal slurry gasifier contains a large amount of black ash, which is easy to adhere to the outlet of the traditional separator, causing the diameter of the separator outlet to become smaller. In severe cases, the separator is forced to stop for maintenance. The present invention sets an ash retaining pipe and a water distribution pipe, uses water to wash the water-gas, reduces the ash content of the water-gas, and avoids the black ash from adhering to the outlet of the separator. The water spraying device and the air intake pipe ash flushing pipe are set to eliminate the black ash accumulated on the top of the separator and above the air intake pipe. The present invention reduces the maintenance frequency of the separator, reduces the maintenance cost of the enterprise, and ensures the long-term stable operation of the water-coal slurry gasifier and the separator.

Description

Technical Field

[0001] The invention belongs to the technical field of water-gas separation, in particular to a separator used for water-gas separation in a water-coal slurry gasifier. Background Art

[0002] In the coal gasification process using coal as raw material, the water gas generated by the water-coal slurry gasifier contains black ash and water in addition to main components such as CO, H2, CO2, and CH4. The water gas separates most of the black ash and water in the separator, and then enters the washing tower (a conventional separation tower, including a packed tower or a plate tower, and a bubble tower is preferably used in the plate tower) for washing. The separator only separates most of the large particles of black ash in the water gas, while the fine black ash is not separated. Some of the fine black ash adheres to the separation outlet and blocks the separator outlet. Some of the black ash enters the separator outlet pipe along with the water gas, blocking the pipe, causing frequent maintenance of the separator and the separator outlet pipe. In severe cases, the gasifier needs to be shut down for maintenance every 8 to 10 days, which is not conducive to the long-term stable operation of the water-coal slurry gasifier and the separator. Summary of the invention

[0003] In order to overcome the defects of the prior art, the present invention provides a separator for water-gas separation in a water-coal slurry gasifier which has a simple structure, is easy to use and is not prone to clogging.

[0004] In order to achieve the above object, the technical solution of the present invention is as follows:

[0005] A separator for water-gas separation in a water-coal slurry gasifier, comprising a separator shell and an air inlet pipe, wherein the upper portion of the separator shell structure is elliptical, the middle portion is cylindrical, and the lower portion is inverted conical, a water-gas inlet, a washing water inlet and an upper opening of a liquid level gauge are arranged on the cylindrical surface of the separator shell, a water-gas outlet is arranged on the top of the elliptical surface of the separator shell, a black water outlet is arranged on the inverted conical bottom of the separator shell, and a lower opening of the liquid level gauge is arranged on the inverted conical side of the separator shell, the air inlet pipe is arranged inside the separator shell, one end of the air inlet pipe is connected to the water-gas inlet, the other end of the air inlet pipe is connected to the inner wall of the separator shell opposite to the water-gas inlet, and an air inlet is arranged at the lower part of the air inlet pipe; A separator for water-gas separation in a water-coal slurry gasifier also comprises an ash retaining pipe, a water distribution pipe, a water distribution main pipe, a water spraying device, an air inlet pipe ash flushing pipe, a plurality of water distribution main pipe brackets are arranged on the circumferential surface of the inner wall of the separator shell above the air inlet pipe, and a plurality of water distribution main pipe brackets are arranged on the circumferential surface of the inner wall of the separator shell above the air inlet pipe. The pipe supports are arranged at the same horizontal height and at equal intervals. A water distribution main pipe is arranged on the water distribution main pipe support. The water distribution main pipe is connected to the washing water inlet through a pipe. An intake pipe ash flushing pipe parallel to the intake pipe and blocked at both ends is arranged directly above the intake pipe. The intake pipe ash flushing pipe is connected to the water distribution main pipe through a pipe, and a water outlet hole is arranged on the pipe wall of the lower half of the intake pipe ash flushing pipe; the ash blocking pipe is a cylindrical structure and there are several of them. Several ash blocking pipes are arranged in the separator shell and the upper ends are all connected to the water gas outlet through connecting pipes. A water spraying device arranged on the periphery of the top end of the connecting pipe is seamlessly connected to the connecting pipe. Small water spraying holes are arranged on the water spraying device. The water spraying device is connected to the water distribution main pipe through a pipe. The lower ends of several ash blocking pipes are open, and a water distribution pipe is arranged on the circumferential outer surface of each ash blocking pipe. The ash blocking pipe is seamlessly connected to the water distribution pipe, and the ash blocking pipe is connected to the water distribution pipe through a circular small hole arranged on the pipe wall of the ash blocking pipe, and the water distribution pipe is connected to the water distribution main pipe through a pipe.

[0006] Furthermore, a plurality of the water outlet holes, water spray holes and circular holes are provided, and the diameters of the water outlet holes, water spray holes and circular holes are all 3 mm to 5 mm.

[0007] Furthermore, the lower end of the ash blocking pipe is higher than the ash flushing pipe of the air intake pipe.

[0008] Furthermore, the upper opening of the liquid level gauge is lower than the air inlet pipe and higher than the lower opening of the liquid level gauge, and the upper opening of the liquid level gauge and the lower opening of the liquid level gauge are in the same vertical direction.

[0009] Furthermore, there is one or more combined structures of ash retaining pipes and water distribution pipes in the separator shell.

[0010] Furthermore, the water distribution pipe is connected to the water distribution main pipe through a pipe, and there are two pipes connected to each water distribution pipe and they are centrally symmetrical. The direction of the pipe connected to each water distribution pipe is the tangent direction of the water distribution pipe or perpendicular to the tangent direction of the water distribution pipe.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention separates the fine black ash in the water gas by arranging the ash retaining pipe and the water distribution pipe, thereby avoiding the fine black ash adhering to the separator outlet, which causes the separator outlet to become smaller or blocked, and the separator operating pressure to be too high, thereby effectively reducing the maintenance frequency of the separator and reducing the labor intensity of employees.

[0013] 2. The present invention reduces the content of fine black ash in the water gas after separation, and effectively prevents the blockage of the separator outlet pipe.

[0014] 3. The present invention prevents the black ash in the water gas from adhering to the top of the separator shell, the connecting pipe connecting the ash retaining pipe and the water-gas outlet, and the upper part of the air inlet pipe, thereby preventing the accumulated black ash blocks from falling to the bottom of the separator to block the black water outlet, thereby providing a guarantee for the long-term stable operation of the water-coal slurry gasifier and the separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a partial cross-section of the present invention;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the dust baffle of the present invention;

[0017] Figure 3 This is a schematic diagram of a top view of the combined structure of the ash retaining pipe, the water distribution pipe, and the water distribution main pipe of the present invention;

[0018] Figure 4 This is an enlarged structural diagram of the air intake ash flushing pipe of the present invention;

[0019] Figure 5 It is a schematic diagram of the top view of the structure of the water spray device of the present invention;

[0020] Figure 6 It is a front view structural schematic diagram of the water spray device of the present invention;

[0021] Figure 7 Another schematic diagram of the top view of the combined structure of the ash retaining pipe, the water distribution pipe and the water distribution main pipe of the present invention;

[0022] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 71- separator shell; 2- water gas inlet; 3- water distribution pipe; 4- water gas outlet; 5- ash retaining pipe; 6- washing water inlet; 7- round small hole; 8- air inlet pipe; 9- upper opening of liquid level gauge; 10- lower opening of liquid level gauge; 11- black water outlet; 12- water distribution main pipe bracket; 13- water distribution main pipe; 14- water spraying device; 15- air inlet pipe ash flushing pipe; 16- water outlet small hole; 17- water spraying small hole. DETAILED DESCRIPTION

[0023] Example 1

[0024] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the present invention is a separator for water-gas separation in a water-coal slurry gasifier, which is arranged to prevent the outlet of a coal gasification water-gas separator and the outlet pipe from being easily clogged by fine black ash. The separator comprises a separator shell 1 and an air inlet pipe 8. The upper portion of the separator shell 1 is elliptical, the middle portion is cylindrical, and the lower portion is inverted conical. A water-gas inlet 2, a washing water inlet 6, an upper opening 9 of a liquid level gauge, and a separator inspection manhole are arranged on the cylindrical surface of the separator shell 1. A manhole cover fastened with bolts is arranged on the separator inspection manhole. A water-gas outlet 4, a temperature detection port, and a pressure detection port are arranged on the top of the elliptical surface of the separator shell 1. A black water outlet 11 is arranged on the inverted conical bottom of the separator shell 1. The conical side is provided with a lower opening 10 of the liquid level gauge, the upper opening 9 of the liquid level gauge is lower than the air inlet pipe 8 and higher than the lower opening 10 of the liquid level gauge, and the upper opening 9 of the liquid level gauge and the lower opening 10 of the liquid level gauge are in the same vertical direction; the air inlet pipe 8 is arranged inside the separator housing 1, one end of the air inlet pipe 8 is connected to the water-gas inlet 2, and the other end of the air inlet pipe 8 is connected to the inner wall of the separator housing 1 opposite to the water-gas inlet 2, and an air inlet is arranged at the lower part of the air inlet pipe 8; a separator for water-gas separation in a water-coal slurry gasifier also includes an ash retaining pipe 5, a water distribution pipe 3, a water distribution main pipe 13, a water spraying device 14, and an air inlet pipe ash flushing pipe 15, and a plurality of water distribution main pipe brackets 12 are arranged on the circumferential surface of the inner wall of the separator housing 1 above the air inlet pipe 8, and a plurality of water distribution main pipe brackets 12 A water distribution main pipe 13 is arranged on the water distribution main pipe bracket 12 at the same horizontal height and at equal intervals. The water distribution main pipe 13 is connected to the washing water inlet 6 through a pipeline. An intake pipe ash flushing pipe 15 parallel to the intake pipe 8 and blocked at both ends is arranged directly above the intake pipe 8. The intake pipe ash flushing pipe 15 is connected to the water distribution main pipe 13 through a pipeline. A plurality of water outlet holes 16 with a diameter of 3 mm are arranged on the lower half of the pipe wall of the intake pipe ash flushing pipe 15; the ash retaining pipe 5 is a cylindrical structure and has a plurality of them. Five ash retaining pipes 5 are preferably arranged in the present embodiment. The five ash retaining pipes 5 are arranged in the separator housing 1 and the upper ends are connected to the water-gas outlet 4 through a connecting pipe. The water spraying device 14 arranged on the periphery of the top end of the connecting pipe is seamlessly connected to the connecting pipe. A plurality of small water spray holes 17 with a diameter of 3 mm are arranged on the water spray device 14, and the water spray device 14 is connected with the water distribution main pipe 13 through a pipeline, and the lower end of the ash retaining pipe 5 is open, and the lower end of the ash retaining pipe 5 is higher than the air intake pipe ash flushing pipe 15, and a water distribution pipe 3 is arranged on the circumferential outer surface of each ash retaining pipe 5, and the ash retaining pipe 5 is seamlessly connected with the water distribution pipe 3, and the ash retaining pipe 5 is connected with the inside of the water distribution pipe 3 through a circular small hole 7 arranged on the pipe wall of the ash retaining pipe 5; a plurality of circular small holes 7 are arranged, and the diameter of the circular small holes 7 is 3 mm, and the water distribution pipe 3 is connected with the water distribution main pipe 13 through a pipeline, and there are two pipelines connected with each water distribution pipe 3 and they are symmetrical with respect to the center, and the direction of the pipeline connected with each water distribution pipe 3 is perpendicular to the circumferential tangent direction of the water distribution pipe 3.

[0025] Example 2

[0026] reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the present invention is a separator for water-gas separation in a water-coal slurry gasifier, which is arranged to prevent the outlet of a coal gasification water-gas separator and the outlet pipe from being easily clogged by fine black ash. The separator comprises a separator shell 1 and an air inlet pipe 8. The upper portion of the separator shell 1 is elliptical, the middle portion is cylindrical, and the lower portion is inverted conical. A water-gas inlet 2, a washing water inlet 6, an upper opening 9 of a liquid level gauge, and a separator inspection manhole are arranged on the cylindrical surface of the separator shell 1. A manhole cover fastened with bolts is arranged on the separator inspection manhole. A water-gas outlet 4, a temperature detection port, and a pressure detection port are arranged on the top of the elliptical surface of the separator shell 1. A black water outlet 11 is arranged on the inverted conical bottom of the separator shell 1. The conical side is provided with a lower opening 10 of the liquid level gauge, the upper opening 9 of the liquid level gauge is lower than the air inlet pipe 8 and higher than the lower opening 10 of the liquid level gauge, and the upper opening 9 of the liquid level gauge and the lower opening 10 of the liquid level gauge are in the same vertical direction; the air inlet pipe 8 is arranged inside the separator housing 1, one end of the air inlet pipe 8 is connected to the water-gas inlet 2, and the other end of the air inlet pipe 8 is connected to the inner wall of the separator housing 1 opposite to the water-gas inlet 2, and an air inlet is arranged at the lower part of the air inlet pipe 8; a separator for water-gas separation in a water-coal slurry gasifier also includes an ash retaining pipe 5, a water distribution pipe 3, a water distribution main pipe 13, a water spraying device 14, and an air inlet pipe ash flushing pipe 15, and a plurality of water distribution main pipe brackets 12 are arranged on the circumferential surface of the inner wall of the separator housing 1 above the air inlet pipe 8, and a plurality of water distribution main pipe brackets 12 A water distribution main pipe 13 is arranged on the water distribution main pipe bracket 12 at the same horizontal height and at equal intervals. The water distribution main pipe 13 is connected to the washing water inlet 6 through a pipeline. An intake pipe ash flushing pipe 15 is arranged directly above the intake pipe 8, which is parallel to the intake pipe 8 and blocked at both ends. The intake pipe ash flushing pipe 15 is connected to the water distribution main pipe 13 through a pipeline. A plurality of water outlet holes 16 with a diameter of 4 mm are arranged on the lower half of the pipe wall of the intake pipe ash flushing pipe 15; the ash retaining pipe 5 is a cylindrical structure and has a plurality of them. Five ash retaining pipes 5 are preferably arranged in the present embodiment. The five ash retaining pipes 5 are arranged in the separator housing 1 and the upper ends are connected to the water-gas outlet 4 through connecting pipes. The water spraying device 14 arranged on the periphery of the top end of the connecting pipe is seamlessly connected to the connecting pipe. A plurality of water spray holes 17 with a diameter of 4 mm are arranged on the water spray device 14, and the water spray device 14 is connected with the water distribution main pipe 13 through a pipeline, and the lower end of the ash retaining pipe 5 is open, and the lower end of the ash retaining pipe 5 is higher than the air intake pipe ash flushing pipe 15, and a water distribution pipe 3 is arranged on the circumferential outer surface of each ash retaining pipe 5, and the ash retaining pipe 5 is seamlessly connected with the water distribution pipe 3, and the ash retaining pipe 5 is connected with the inside of the water distribution pipe 3 through a circular hole 7 arranged on the pipe wall of the ash retaining pipe 5; a plurality of circular holes 7 are arranged, and the diameter of the circular holes 7 is 4 mm, and the water distribution pipe 3 is connected with the water distribution main pipe 13 through a pipeline, and there are two pipelines connected with each water distribution pipe 3 and they are symmetrical with respect to the center, and the direction of the pipeline connected with each water distribution pipe 3 is perpendicular to the circumferential tangent direction of the water distribution pipe 3.

[0027] Example 3

[0028] reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the present invention is a separator for water-gas separation in a water-coal slurry gasifier, which is arranged to prevent the outlet of a coal gasification water-gas separator and the outlet pipe from being easily clogged by fine black ash. The separator comprises a separator shell 1 and an air inlet pipe 8. The upper portion of the separator shell 1 is elliptical, the middle portion is cylindrical, and the lower portion is inverted conical. A water-gas inlet 2, a washing water inlet 6, an upper opening 9 of a liquid level gauge, and a separator inspection manhole are arranged on the cylindrical surface of the separator shell 1. A manhole cover fastened with bolts is arranged on the separator inspection manhole. A water-gas outlet 4, a temperature detection port, and a pressure detection port are arranged on the top of the elliptical surface of the separator shell 1. A black water outlet 11 is arranged on the inverted conical bottom of the separator shell 1. The conical side is provided with a lower opening 10 of the liquid level gauge, the upper opening 9 of the liquid level gauge is lower than the air inlet pipe 8 and higher than the lower opening 10 of the liquid level gauge, and the upper opening 9 of the liquid level gauge and the lower opening 10 of the liquid level gauge are in the same vertical direction; the air inlet pipe 8 is arranged inside the separator housing 1, one end of the air inlet pipe 8 is connected to the water-gas inlet 2, and the other end of the air inlet pipe 8 is connected to the inner wall of the separator housing 1 opposite to the water-gas inlet 2, and an air inlet is arranged at the lower part of the air inlet pipe 8; a separator for water-gas separation in a water-coal slurry gasifier also includes an ash retaining pipe 5, a water distribution pipe 3, a water distribution main pipe 13, a water spraying device 14, and an air inlet pipe ash flushing pipe 15, and a plurality of water distribution main pipe brackets 12 are arranged on the circumferential surface of the inner wall of the separator housing 1 above the air inlet pipe 8, and a plurality of water distribution main pipe brackets 12 A water distribution main pipe 13 is arranged on the water distribution main pipe bracket 12 at the same horizontal height and at equal intervals. The water distribution main pipe 13 is connected to the washing water inlet 6 through a pipeline. An intake pipe ash flushing pipe 15 parallel to the intake pipe 8 and blocked at both ends is arranged directly above the intake pipe 8. The intake pipe ash flushing pipe 15 is connected to the water distribution main pipe 13 through a pipeline. A plurality of water outlet holes 16 with a diameter of 5 mm are arranged on the lower half of the pipe wall of the intake pipe ash flushing pipe 15; the ash retaining pipe 5 is a cylindrical structure and has a plurality of them. Five ash retaining pipes 5 are preferably arranged in the present embodiment. The five ash retaining pipes 5 are arranged in the separator housing 1 and the upper ends are connected to the water-gas outlet 4 through a connecting pipe. The water spraying device 14 arranged on the periphery of the top end of the connecting pipe is seamlessly connected to the connecting pipe. A plurality of small water spray holes 17 with a diameter of 5 mm are arranged on the water spray device 14, and the water spray device 14 is connected with the water distribution main pipe 13 through a pipeline, and the lower end of the ash retaining pipe 5 is open, and the lower end of the ash retaining pipe 5 is higher than the air intake pipe ash flushing pipe 15, and a water distribution pipe 3 is arranged on the circumferential outer surface of each ash retaining pipe 5, and the ash retaining pipe 5 is seamlessly connected with the water distribution pipe 3, and the ash retaining pipe 5 is connected with the inside of the water distribution pipe 3 through a circular small hole 7 arranged on the pipe wall of the ash retaining pipe 5; a plurality of circular small holes 7 are arranged, and the diameter of the circular small holes 7 is 5 mm, and the water distribution pipe 3 is connected with the water distribution main pipe 13 through a pipeline, and there are two pipelines connected with each water distribution pipe 3 and they are symmetrical with respect to the center, and the direction of the pipeline connected with each water distribution pipe 3 is perpendicular to the circumferential tangent direction of the water distribution pipe 3.

[0029] Example 4

[0030] reference Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, the present invention is a separator for water-gas separation in a water-coal slurry gasifier, which is arranged to prevent the outlet of a coal gasification water-gas separator and the outlet pipe from being easily clogged by fine black ash, and comprises a separator shell 1 and an air inlet pipe 8. The upper portion of the separator shell 1 is elliptical, the middle portion is cylindrical, and the lower portion is inverted conical. A water-gas inlet 2, a washing water inlet 6, an upper opening 9 of a liquid level gauge, and a separator inspection manhole are arranged on the cylindrical surface of the separator shell 1. A manhole cover fastened with bolts is arranged on the separator inspection manhole. A water-gas outlet 4, a temperature detection port, and a pressure detection port are arranged on the top of the elliptical surface of the separator shell 1. A black water outlet 11 is arranged on the inverted conical bottom of the separator shell 1. The conical side is provided with a lower opening 10 of the liquid level gauge, the upper opening 9 of the liquid level gauge is lower than the air inlet pipe 8 and higher than the lower opening 10 of the liquid level gauge, and the upper opening 9 of the liquid level gauge and the lower opening 10 of the liquid level gauge are in the same vertical direction; the air inlet pipe 8 is arranged inside the separator housing 1, one end of the air inlet pipe 8 is connected to the water-gas inlet 2, and the other end of the air inlet pipe 8 is connected to the inner wall of the separator housing 1 opposite to the water-gas inlet 2, and an air inlet is arranged at the lower part of the air inlet pipe 8; a separator for water-gas separation in a water-coal slurry gasifier also includes an ash retaining pipe 5, a water distribution pipe 3, a water distribution main pipe 13, a water spraying device 14, and an air inlet pipe ash flushing pipe 15, and a plurality of water distribution main pipe brackets 12 are arranged on the circumferential surface of the inner wall of the separator housing 1 above the air inlet pipe 8, and a plurality of water distribution main pipe brackets 1 2 are arranged at the same level and at equal intervals. A water distribution main pipe 13 is arranged on the water distribution main pipe bracket 12. The water distribution main pipe 13 is connected to the washing water inlet 6 through a pipeline. An intake pipe ash flushing pipe 15 is arranged directly above the intake pipe 8, which is parallel to the intake pipe 8 and blocked at both ends. The intake pipe ash flushing pipe 15 is connected to the water distribution main pipe 13 through a pipeline. A plurality of water outlet holes 16 with a diameter of 3 mm are arranged on the pipe wall of the lower half of the intake pipe ash flushing pipe 15; the ash retaining pipe 5 is a cylindrical structure and has a plurality of them. In this embodiment, 5 ash retaining pipes 5 are arranged in the separator housing 1 and the upper ends are all connected to the water gas outlet 4 through a connecting pipe. The water spraying device 14 arranged on the periphery of the top of the connecting pipe is seamlessly connected to the connecting pipe. Then, a plurality of small water spray holes 17 with a diameter of 4 mm are arranged on the water spray device 14, and the water spray device 14 is connected with the water distribution main pipe 13 through a pipeline, and the lower end of the ash retaining pipe 5 is open, and the lower end of the ash retaining pipe 5 is higher than the air intake pipe ash flushing pipe 15, and a water distribution pipe 3 is arranged on the circumferential outer surface of each ash retaining pipe 5, and the ash retaining pipe 5 is seamlessly connected with the water distribution pipe 3, and the ash retaining pipe 5 is connected with the inside of the water distribution pipe 3 through a circular small hole 7 arranged on the pipe wall of the ash retaining pipe 5; a plurality of circular small holes 7 are arranged, and the diameter of the circular small holes 7 is 5 mm, and the water distribution pipe 3 is connected with the water distribution main pipe 13 through a pipeline, and there are two pipelines connected with each water distribution pipe 3 and they are symmetrical with respect to the center, and the direction of the pipeline connected with each water distribution pipe 3 is the tangent direction of the circumference of the water distribution pipe 3.

[0031] The working principle of the present invention is as follows: the water gas generated by the water-coal slurry gasification furnace enters the separator from the water gas inlet 2, and after most of the black ash and water are separated in the separator, the water gas passes through the ash retaining pipe 5 and the water gas outlet 4 in turn to flow out of the separator, and the water gas is washed by the water distributed by the water distribution pipe 3 when flowing through the ash retaining pipe 5, and the fine black ash falls to the bottom of the separator under the action of gravity after being washed; the black ash and black water at the bottom of the separator are discharged from the black water outlet 11; water is sprayed to the top of the inner wall of the separator shell 1, the connecting pipe connecting the ash retaining pipe 5 and the water gas outlet 4, and the upper part of the air intake pipe 8 through the water spraying device 14 and the air intake pipe ash flushing pipe 15 arranged in the separator shell 1, so as to prevent the black ash in the water gas from adhering to the top of the inner wall of the separator shell 1, the connecting pipe connecting the ash retaining pipe 5 and the water gas outlet 4, and the upper part of the air intake pipe 8, thereby preventing the accumulated black ash blocks from falling to the bottom of the separator to block the black water outlet 11, thereby ensuring the long-term operation of the separator.

[0032] The present invention separates the fine black ash in the water gas, thereby avoiding the fine black ash adhering to the separator outlet, which causes the separator outlet to become smaller or blocked, and the operating pressure to be too high, thereby effectively reducing the maintenance frequency of the separator and the labor intensity of employees; and effectively reducing the content of fine black ash in the water gas after separation.

[0033] The above specific implementation methods are only examples of the contents of the present invention. Any modification and changes to the present invention made by a person familiar with the present invention are within the patent scope of the present invention and are not limited to the embodiments.

Claims

1. A separator for water-gas separation in a water-coal slurry gasifier, comprising a separator shell and an air inlet pipe, wherein the upper portion of the separator shell structure is elliptical, the middle portion is cylindrical, and the lower portion is inverted conical. A water-gas inlet, a washing water inlet, and an upper opening of a liquid level gauge are arranged on the cylindrical surface of the separator shell, a water-gas outlet is arranged on the top of the elliptical surface of the separator shell, a black water outlet is arranged on the inverted conical bottom of the separator shell, and a lower opening of a liquid level gauge is arranged on the inverted conical side of the separator shell. The air inlet pipe is arranged inside the separator shell, one end of the air inlet pipe is connected to the water-gas inlet, and the other end of the air inlet pipe is connected to the inner wall of the separator shell opposite to the water-gas inlet, and an air inlet is arranged at the lower portion of the air inlet pipe, characterized in that: It also includes an ash retaining pipe, a water distribution pipe, a water distribution main pipe, a water spraying device, and an air intake ash flushing pipe. A plurality of water distribution main pipe brackets are arranged on the circumferential surface of the inner wall of the separator shell above the air intake pipe. The plurality of water distribution main pipe brackets are arranged at the same horizontal height and at equal intervals. A water distribution main pipe is arranged on the water distribution main pipe bracket. The water distribution main pipe is connected with the washing water inlet through a pipeline. An air intake ash flushing pipe parallel to the air intake pipe and blocked at both ends is arranged directly above the air intake pipe. The air intake ash flushing pipe is connected with the water distribution main pipe through a pipeline. A water outlet hole is arranged on the lower half of the pipe wall of the air intake ash flushing pipe. The ash retaining pipe is a cylindrical structure and there are a plurality of them. The plurality of ash retaining pipes are arranged on the separator shell. The inner and upper ends are connected with the water-gas outlet through connecting pipes, the water spraying device arranged on the outer periphery of the top end of the connecting pipe is seamlessly connected with the connecting pipe, small water spraying holes are arranged on the water spraying device, the water spraying device is connected with the water distribution main pipe through pipes, the lower ends of several ash retaining pipes are open, a water distribution pipe is arranged on the circumferential outer surface of each ash retaining pipe, the ash retaining pipe is seamlessly connected with the water distribution pipe, the ash retaining pipe wall is connected with the inside of the water distribution pipe by means of circular small holes, the water distribution pipe is connected with the water distribution main pipe through pipes; the lower end of the ash retaining pipe is higher than the air inlet pipe ash flushing pipe; the upper end of the liquid level gauge is lower than the air inlet pipe, higher than the lower end of the liquid level gauge, and the upper end of the liquid level gauge and the lower end of the liquid level gauge are in the same vertical direction.

2. The separator for water-gas separation in a water-coal slurry gasifier according to claim 1, characterized in that: The water outlet holes, water spray holes and circular holes are all provided in plurality, and the diameters of the water outlet holes, water spray holes and circular holes are all 3mm to 5mm.

3. The separator for water-gas separation in a water-coal slurry gasifier according to claim 1, characterized in that: The water distribution pipe is connected to the water distribution main pipe through a pipe. There are two pipes connected to each water distribution pipe and they are centrally symmetrical. The direction of the pipe connected to each water distribution pipe is the tangent direction of the water distribution pipe or perpendicular to the tangent direction of the water distribution pipe.

Images