A composite bed high temperature gas cooling and washing equipment

Abstract

The present invention relates to the technical field of high-temperature coal gas cooling and washing, and specifically to a composite bed high-temperature coal gas cooling and washing equipment, comprising a shell, wherein the upper end of the shell is provided with an air inlet of a conical structure, and the lower end of the air inlet is connected to a down pipe, and a buffer washing mechanism is provided inside the down pipe; an ascending cavity is formed between the down pipe and the inner wall of the shell, and a filter screen is fixedly connected between the lower end of the ascending cavity and the inner wall of the shell, and a slag discharge pipe is connected to the lower end of the shell. In the composite bed high-temperature coal gas cooling and washing equipment, the high-temperature coal gas is buffered by the buffer washing mechanism after entering the down pipe, thereby extending the contact time between the high-temperature coal gas and the washing water, and further improving the cooling and washing effect of the high-temperature coal gas; the small particles of fly ash attached to the inner side of the filter screen are scraped off by the cleaning mechanism to prevent the filter screen from being blocked and reducing the filtering effect.

Description

Technical Field

[0001] The invention relates to the technical field of high-temperature coal gas cooling and washing, and in particular to a composite bed high-temperature coal gas cooling and washing device. Background Art

[0002] Large-scale pressurized entrained flow coal gasification technology has become an important way and development direction for clean and efficient conversion of coal in my country. It has very important practical and strategic significance for saving energy and reducing greenhouse gas emissions.

[0003] The coal gasification reaction in the fluidized flow gasification device with coal and other hydrocarbon-containing compounds as raw materials is usually carried out at a high temperature of 1200-1700℃. The high-temperature crude synthesis gas generated by the reaction needs to be cooled to a specific temperature before it can enter the subsequent production operation process. Different types of gasifiers have different cooling methods for high-temperature crude synthesis gas according to process requirements. The representative GE water-coal slurry gasifier uses a quenching ring and a water bath to quench the high-temperature crude synthesis gas. The quenching chamber is mainly a cylindrical structure, which consists of concentric circles of downcomers, risers, and pressure-bearing shells from the inside to the outside, and has main components such as quenching rings. The quenching method used is mainly to make the synthesis gas, ash, and slag pass through the quenching water at the bottom of the quenching chamber, so as to preliminarily wash and cool the high-temperature synthesis gas, fly ash, and molten ash and slag produced by the gasification chamber of the gasifier.

[0004] However, in the prior art, the high-temperature coal gas directly passes through the downcomer and then enters the riser. Since the downcomer is in a vertical state and no buffer mechanism is provided, the high-temperature coal gas passes through the downcomer at a very fast speed, resulting in a very short contact time between the high-temperature coal gas and the washing water, thereby affecting the cooling and washing effect of the high-temperature coal gas. Summary of the invention

[0005] The object of the present invention is to provide a composite bed high temperature coal gas cooling and washing equipment to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a composite bed high-temperature coal gas cooling and washing device, comprising a shell, an air inlet with a conical structure is opened at the upper end of the shell, and a downcomer is connected to the lower end of the air inlet, and a buffer washing mechanism is arranged inside the downcomer;

[0007] An ascending cavity is formed between the descending pipe and the inner wall of the shell, and a filter screen is fixedly connected between the lower end of the ascending cavity and the inner wall of the shell, and the lower end of the shell is connected to a slag discharge pipe;

[0008] A bottom plate is provided under the shell, and four legs are fixedly connected to the outer edge of the upper surface of the bottom plate in an annular manner with equal distances, and the upper ends of the legs are fixedly connected to the shell, an air outlet pipe is connected to the upper end of the right side surface of the shell, and a drain pipe is connected to the lower side of the right side surface of the shell.

[0009] Preferably, the buffer washing mechanism comprises a sleeve, a primary baffle and a water inlet pipe;

[0010] The sleeve is sleeved on the outside of the downcomer, and the upper end of the sleeve is fixedly connected to the lower end of the air inlet. The downcomer is a rectangular straight tube structure, the sleeve is a circular straight tube structure, and the water inlet pipe passes through the shell and is connected to the lower end of the left side of the sleeve;

[0011] The first-stage baffles are arranged on the left and right inner walls of the downcomer in a downwardly inclined manner and are staggered and fixedly connected at equal intervals, and the first-stage baffles are in a rectangular structure.

[0012] Preferably, a rectangular cavity is opened inside the first-level baffle, and the rectangular cavity penetrates to the outer side surface of the downcomer, and the upper end surface of the first-level baffle is evenly opened with first-level water spray holes penetrating to the rectangular cavity.

[0013] Preferably, a plurality of secondary baffles of annular structure are vertically and equidistantly fixedly connected to the outer side surface of the sleeve, and the outer edge of the secondary baffle is inclined downward, and an air passage is left between the secondary baffle and the inner wall of the shell;

[0014] The secondary baffle has a cavity structure inside and penetrates to the inner wall of the sleeve, and the lower end surface of the secondary baffle is evenly provided with secondary water spray holes penetrating to the cavity;

[0015] A plurality of third-level baffles of annular structure are vertically and equidistantly fixedly connected on the inner wall of the shell corresponding to the second-level baffles. The third-level baffles are staggered with the second-level baffles and leave air passages between the baffles and the sleeves.

[0016] Preferably, the lower end of the shell is in a conical structure, and a slag breaking mechanism is arranged inside the shell of the conical structure, and the slag breaking mechanism includes a motor, a driving rod, and a spiral blade;

[0017] The driving rod is arranged at the center position inside the shell of the conical structure, and the lower end of the driving rod passes through the slag discharge pipe and is fixedly connected to the output shaft of the motor fixedly connected to the center position of the upper end surface of the bottom plate, and the spiral blade is fixedly connected to the outer surface of the driving rod.

[0018] Preferably, the blade radius of the spiral blade located inside the conical structure shell gradually decreases, and the blade radius of the spiral blade located inside the slag discharge pipe remains unchanged;

[0019] The outer edge of the lower end surface of the spiral blade located in the conical structure shell is evenly fixedly connected with crushing teeth, and the inner wall of the conical structure shell is correspondingly fixedly connected with crushing teeth.

[0020] Preferably, a fixing ring is provided at the upper end of the driving rod near the position of the spiral blade, and a ceramic gasket is fixedly connected to the inner wall of the fixing ring. A fixing rod is fixedly connected between the left and right sides of the fixing ring and the inner wall of the shell.

[0021] Preferably, a cleaning mechanism is provided above the driving rod, and the cleaning mechanism comprises a scraper and a support plate;

[0022] The support plates are fixedly connected to the left and right sides of the upper end of the driving rod symmetrically, and the scrapers are fixedly connected to the ends of the support plates, and the scrapers are respectively in contact with the left and right sides of the inner side surface of the filter screen plate.

[0023] Preferably, a cylindrical tube is fixedly connected symmetrically to the upper surface of the support plate near the position below the sleeve, and a vibrating block is slidably inserted inside the cylindrical tube;

[0024] The upper end of the vibrating block is in a hemispherical structure, and a plurality of hemispherical protrusions are fixedly connected in an equidistant manner to the lower end surface of the sleeve in a corresponding annular shape.

[0025] Preferably, a spring is fixedly connected to the lower end surface of the vibrating block, and the lower end of the spring is fixedly connected to the inner bottom of the cylindrical tube.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. After entering the downcomer, the high-temperature gas is buffered by the buffer washing mechanism, thereby prolonging the contact time between the high-temperature gas and the washing water, thereby improving the cooling and washing effect of the high-temperature gas;

[0028] 2. The large pieces of coal slag mixed in the high-temperature coal gas are crushed by the slag breaking mechanism to prevent the coal slag from clogging the slag discharge pipe;

[0029] 3. The small particles of fly ash attached to the inner side of the filter screen are scraped off by the cleaning mechanism to prevent the filter screen from being blocked and reducing the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0032] Figure 2 For the present invention Figure 1 The cross-sectional view at AA in FIG.

[0033] Figure 3 For the present invention Figure 2 The cross-sectional view at BB in FIG.

[0034] Figure 4 For the present invention Figure 2 The enlarged view of point C in the figure;

[0035] Figure 5 For the present invention Figure 2 The enlarged view of point D in the figure;

[0036] Figure 6 For the present invention Figure 2 Enlarged view of point E in FIG.

[0037] Description of reference numerals:

[0038] 1. Shell; 11. Air inlet; 12. Downcomer; 13. Slag discharge pipe; 14. Bottom plate; 15. Leg; 16. Drain pipe; 17. Exhaust pipe; 2. Buffer washing mechanism; 21. Casing; 22. Primary baffle; 221. Primary water spray hole; 23. Secondary baffle; 231. Secondary water spray hole; 24. Third-level baffle; 25. Water inlet pipe; 3. Slag breaking mechanism; 31. Motor; 32. Drive rod; 33. Spiral blade; 34. Crushing tooth; 35. Fixed ring; 36. Fixed rod; 4. Cleaning mechanism; 41. Scraper; 42. Support plate; 43. Cylinder; 44. Spring; 45. Vibrating block; 46. Bump; 5. Filter screen. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 6 , the present invention provides a technical solution:

[0041] A composite bed high-temperature coal gas cooling and washing equipment comprises a shell 1, wherein the upper end of the shell 1 is provided with an air inlet 11 of a conical structure, and the lower end of the air inlet 11 is connected with a downcomer 12, a buffer washing mechanism 2 is arranged inside the downcomer 12, an ascending cavity is formed between the downcomer 12 and the inner wall of the shell 1, and a filter screen plate 5 is fixedly connected between the lower end of the ascending cavity and the inner wall of the shell 1, a slag discharge pipe 13 is connected to the lower end of the shell 1, a bottom plate 14 is arranged below the shell 1, and four supporting legs 15 are fixedly connected to the outer edge of the upper end surface of the bottom plate 14 in an annular manner and equidistantly, and the upper ends of the supporting legs 15 are fixedly connected to the shell 1, an upper end of the right side surface of the shell 1 is connected with an air outlet pipe 17, and a lower end of the right side surface of the shell 1 is connected with a drain pipe 16.

[0042] During operation, high-temperature coal gas is input into the downcomer 12 through the air inlet 11. Under the action of the buffer washing mechanism 2, the high-temperature coal gas passing through the downcomer 12 is buffered, thereby prolonging the contact time with the washing water, thereby improving the cooling and washing effect. The coal slag mixed in the high-temperature coal gas falls to the lower end of the outer shell 1 after passing through the downcomer 12, and the fly ash floats on the surface of the washing water below the outer shell 1 under the blocking effect of the filter screen plate 5. The high-temperature coal gas passing through the filter screen plate 5 continues to fully contact with the washing water under the buffering effect of the buffer washing mechanism 2, further improving the cooling and washing effect, and is finally discharged through the outlet pipe 17.

[0043] As an embodiment of the present invention, Figures 2 to 5 As shown, the buffer washing mechanism 2 includes a sleeve 21, a primary baffle 22 and a water inlet pipe 25, the sleeve 21 is sleeved on the outside of the down pipe 12, and the upper end of the sleeve 21 is fixedly connected to the lower end of the air inlet 11, the down pipe 12 is a rectangular straight tube structure, the sleeve 21 is a circular straight tube structure, and the water inlet pipe 25 passes through the shell 1 and is connected to the lower end of the left side of the sleeve 21, the primary baffle 22 is tilted downward on the left and right inner walls of the down pipe 12, and is staggered and fixedly connected in a plurality of groups, and the primary baffle 22 is a rectangular structure, a rectangular cavity is opened inside the primary baffle 22, and the rectangular cavity passes through the outer side of the down pipe 12, and the upper end surface of the primary baffle 22 is evenly opened. A primary water spray hole 221 penetrating into a rectangular cavity is provided, a plurality of secondary baffles 23 of annular structure are vertically and equidistantly fixedly connected to the outer side surface of the sleeve 21, and the outer edge of the secondary baffle 23 is inclined downward, and an air passage is left between the secondary baffle 23 and the inner wall of the shell 1, the interior of the secondary baffle 23 is a cavity structure, and it penetrates to the inner wall position of the sleeve 21, and the lower end surface of the secondary baffle 23 is evenly provided with secondary water spray holes 231 penetrating into the cavity, and a plurality of tertiary baffles 24 of annular structure are vertically and equidistantly fixedly connected to the inner wall of the shell 1 corresponding to the secondary baffle 23, and the tertiary baffle 24 and the secondary baffle 23 are staggered with each other and an air passage is left between the sleeve 21.

[0044] When working, the water inlet pipe 25 connected to the water storage tank is opened to continuously transport the washing water into the sleeve 21. The lower end of the sleeve 21 is fixedly connected to the annular outer surface of the lower end of the downcomer 12 to prevent the washing water from flowing away from the gap between the lower end of the sleeve 21 and the lower end of the downcomer 12. Since the first-level baffle 22 is tilted downward on the left and right inner walls of the downcomer 12 and is fixedly connected in a plurality of groups at equal intervals, the flow rate of the high-temperature gas in the downcomer 12 is slowed down. In addition, a rectangular cavity is opened inside the first-level baffle 22, and the rectangular cavity penetrates to the downcomer 12. 2, the upper end surface of the first baffle 22 is evenly provided with first-level water spray holes 221 penetrating into the rectangular cavity, so that the cooling water in the sleeve 21 is sprayed upward through the first-level water spray holes 221, and the airflow is downward, thereby prolonging the contact time between the high-temperature coal gas and the washing water, improving the cooling and washing effect, and the coal slag in the high-temperature coal gas slides down to the lower end of the shell 1 along the inclined surface of the first-level baffle 22 in sequence, and the water flow can also flush the coal slag on the inclined surface of the first-level baffle 22, thereby avoiding the accumulation of coal slag on the inclined surface of the first-level baffle 22. A portion of the fly ash in the high-temperature coal gas is adsorbed in the washing water and flows into the lower end of the shell 1. The high-temperature coal gas passing through the downcomer 12 enters the ascending chamber through the filter screen 5. Since the secondary baffle 23 and the tertiary baffle 24 are staggered and fixedly connected between the casing 21 and the inner wall of the casing 1, the high-temperature coal gas in the ascending chamber is buffered. Since the secondary baffle 23 has a cavity structure inside and penetrates to the inner side wall of the casing 21, and the lower end surface of the secondary baffle 23 is evenly opened with secondary water spray holes 231 penetrating into the cavity, the casing 21 is filled with water. The washing water is sprayed downward through the secondary water spray hole 231. At this time, the air flow is upward, thereby increasing the contact time with the washing water, so that the small particles of fly ash in the high-temperature coal gas are further adsorbed by the washing water, thereby improving the cooling washing effect. The high-temperature coal gas after cooling and washing is discharged through the outlet pipe 17. The washing water sprayed from the secondary water spray hole 231 can also flush the fly ash attached to the surface of the tertiary baffle 24 to prevent the fly ash from accumulating on the tertiary baffle 24 and affecting the washing effect. The drain pipe 16 is opened to discharge the waste water and the fly ash floating on the water surface out of the outer casing 1.

[0045] As an embodiment of the present invention, Figure 2 and Figure 6As shown, the lower end of the shell 1 is a conical structure, and a slag breaking mechanism 3 is arranged inside the shell 1 of the conical structure, and the slag breaking mechanism 3 includes a motor 31, a driving rod 32, and a spiral blade 33. The driving rod 32 is arranged at the center position inside the shell 1 of the conical structure, and the lower end of the driving rod 32 passes through the slag discharge pipe 13 and is fixedly connected to the output shaft of the motor 31 fixedly connected to the center position of the upper end surface of the bottom plate 14. The spiral blade 33 is fixedly connected to the outer surface of the driving rod 32. The blade radius of the spiral blade 33 located inside the conical structure shell 1 gradually decreases, and the blade radius located inside the slag discharge pipe 13 remains unchanged. The outer edge of the lower end surface of the spiral blade 33 located in the conical structure shell 1 is evenly fixedly connected with crushing teeth 34, and the crushing teeth 34 are correspondingly fixedly connected on the inner wall of the conical structure shell 1. A fixing ring 35 is rotatably sleeved on the upper end of the driving rod 32 near the position of the spiral blade 33, and a ceramic gasket is fixedly connected to the inner wall of the fixing ring 35. A fixing rod 36 is fixedly connected between the left and right sides of the fixing ring 35 and the inner wall of the shell 1.

[0046] During operation, when too much coal slag accumulates inside the shell 1 of the conical structure, the starting motor 31 drives the driving rod 32 to rotate, thereby driving the spiral blade 33 to rotate. Since the blade radius of the spiral blade 33 located inside the conical structure shell 1 gradually decreases, and the blade radius located inside the slag discharge pipe 13 remains unchanged, the outer edge of the lower end surface of the spiral blade 33 located inside the conical structure shell 1 is evenly fixedly connected with crushing teeth 34, and the inner wall of the conical structure shell 1 is correspondingly fixedly connected with crushing teeth 34, so that the spiral blade 33 crushes large pieces of coal slag while transporting the coal slag to the slag discharge pipe 13, thereby avoiding the slag discharge pipe 13 being blocked by excessive coal slag, and facilitating the discharge of coal slag. A fixing ring 35 is rotatably sleeved on the upper end of the driving rod 32 near the position of the spiral blade 33, and a ceramic gasket is fixedly connected to the inner wall of the fixing ring 35, and a fixing rod 36 is fixedly connected between the left and right sides of the fixing ring 35 and the inner wall of the shell 1, thereby improving the stability of the driving rod 32, and the setting of the ceramic gasket can reduce the wear between the driving rod 32 and the fixing ring 35.

[0047] As an embodiment of the present invention, Figure 2 and Figure 6As shown, a cleaning mechanism 4 is arranged above the driving rod 32, and the cleaning mechanism 4 includes a scraper 41 and a support plate 42, the support plate 42 is fixedly connected to the left and right sides of the upper end of the driving rod 32 symmetrically, and the scraper 41 is fixedly connected to the end of the support plate 42, and the scraper 41 is respectively in contact with the left and right sides of the inner side surface of the filter screen plate 5, and a cylindrical tube 43 is symmetrically fixedly connected to the upper end surface of the support plate 42 near the position below the sleeve 21, and a vibrating block 45 is slidably inserted inside the cylindrical tube 43, the upper end of the vibrating block 45 is a hemispherical structure, and a plurality of hemispherical protrusions 46 are fixedly connected to the lower end surface of the sleeve 21 in a corresponding annular manner at equal intervals, the lower end surface of the vibrating block 45 is fixedly connected to a spring 44, and the lower end of the spring 44 is fixedly connected to the inner bottom of the cylindrical tube 43.

[0048] During operation, based on the above embodiment, the driving rod 32 drives the scraper 41 to rotate while driving the spiral blade 33 to rotate, thereby scraping off the small particles of fly ash attached to the inner side of the filter screen plate 5. When the upper end of the vibrating block 45 touches the protrusion 46, since the upper end of the vibrating block 45 is a hemispherical structure and the protrusion 46 is a hemispherical structure, it is convenient to press the vibrating block 45 into the cylindrical tube 43. When the vibrating block 45 leaves the protrusion 46, the vibrating block 45 rebounds rapidly under the action of the spring 44, thereby vibrating the lower end of the sleeve 21. Since the upper end of the filter screen plate 5 is fixedly connected to the annular outer surface of the lower end of the sleeve 21, the filter screen plate 5 is driven to vibrate, so that the small particles of fly ash attached to the filter screen plate 5, the first baffle 22, the second baffle 23 and the third baffle 24 are further cleaned, thereby improving the cleaning effect and improving the subsequent cooling and washing effect of the high-temperature coal gas.

[0049] Working principle: high-temperature coal gas is input into the downcomer 12 through the air inlet 11, and the water inlet pipe 25 connected to the water storage tank is opened to continuously transport the washing water into the sleeve 21. The lower end of the sleeve 21 is fixedly connected to the annular outer surface of the lower end of the downcomer 12 to prevent the washing water from flowing away from the gap between the lower end of the sleeve 21 and the lower end of the downcomer 12. Since the first-level baffle 22 is tilted downward on the left and right inner walls of the downcomer 12 and is equidistantly staggered and fixedly connected in several groups, the flow rate of the high-temperature coal gas in the downcomer 12 is slowed down. Because a rectangular cavity is opened inside the first-level baffle 22, and the rectangular cavity penetrates to the outer side of the downcomer 12, the upper end surface of the first-level baffle 22 is evenly opened with first-level water spray holes 221 penetrating into the rectangular cavity, so that the cooling water in the sleeve 21 The gas is sprayed upward through the primary water spray hole 221, and the airflow is downward, thereby prolonging the contact time between the high-temperature gas and the washing water and improving the cooling and washing effect. The coal slag in the high-temperature gas slides down to the lower end of the shell 1 along the inclined surface of the primary baffle 22 in sequence. At the same time, the water flow can also flush the coal slag on the inclined surface of the primary baffle 22, avoiding the accumulation of coal slag on the inclined surface of the primary baffle 22. A part of the fly ash in the high-temperature gas is adsorbed in the washing water and flows into the lower end of the shell 1. The high-temperature gas passing through the downcomer 12 enters the ascending chamber through the filter screen plate 5. Since the secondary baffle 23 and the tertiary baffle 24 are staggered and fixedly connected between the sleeve 21 and the inner wall of the shell 1, the high-temperature gas in the ascending chamber can be buffered. Since the interior of the secondary baffle 23 is a cavity, the high-temperature gas in the ascending chamber can be buffered. The structure is formed by a second-stage water spray hole 231 which penetrates the cavity and penetrates to the inner wall of the sleeve 21. The second-stage water spray hole 231 is evenly provided on the lower end surface of the second-stage baffle 23, so that the washing water in the sleeve 21 is sprayed downward through the second-stage water spray hole 231. At this time, the airflow is upward, thereby increasing the contact time with the washing water, so that the small particles of fly ash in the high-temperature coal gas are further adsorbed by the washing water, thereby improving the cooling and washing effect. The high-temperature coal gas after cooling and washing is discharged through the outlet pipe 17. The washing water sprayed from the second-stage water spray hole 231 can also flush the fly ash attached to the surface of the third-stage baffle 24 to prevent the fly ash from accumulating on the third-stage baffle 24 and affecting the washing effect. The drain pipe 16 is opened to discharge the waste water and the fly ash floating on the water surface out of the shell 1. When the coal slag pile inside the shell 1 of the conical structure When the accumulation is too much, the starting motor 31 drives the driving rod 32 to rotate, thereby driving the spiral blade 33 to rotate. Since the blade radius of the spiral blade 33 located inside the conical structure shell 1 gradually decreases, and the blade radius located inside the slag discharge pipe 13 remains unchanged, the outer edge of the lower end surface of the spiral blade 33 located inside the conical structure shell 1 is evenly fixedly connected with crushing teeth 34, and the inner wall of the conical structure shell 1 is correspondingly fixedly connected with crushing teeth 34, so that the spiral blade 33 crushes large pieces of coal slag while conveying the coal slag into the slag discharge pipe 13, thereby avoiding the slag discharge pipe 13 being blocked by excessive coal slag, and facilitating the discharge of coal slag. A fixing ring 35 is rotatably sleeved on the upper end of the driving rod 32 near the position of the spiral blade 33, and a ceramic gasket is fixedly connected to the inner wall of the fixing ring 35.A fixing rod 36 is fixedly connected between the left and right sides of the fixing ring 35 and the inner wall of the shell 1, thereby improving the stability of the driving rod 32. The setting of the ceramic gasket can reduce the wear between the driving rod 32 and the fixing ring 35. The driving rod 32 drives the scraper 41 to rotate while driving the spiral blade 33 to rotate, thereby scraping off the small particles of fly ash attached to the inner side of the filter screen plate 5. When the upper end of the vibrating block 45 touches the protrusion 46, since the upper end of the vibrating block 45 is a hemispherical structure and the protrusion 46 is a hemispherical structure, it is convenient to vibrate The tamping block 45 is pressed into the cylindrical tube 43. When the tamping block 45 leaves the protrusion 46, the tamping block 45 rebounds rapidly under the action of the spring 44, thereby vibrating the lower end of the sleeve 21. Since the upper end of the filter screen 5 is fixedly connected to the annular outer surface of the lower end of the sleeve 21, the filter screen 5 is driven to vibrate, so that the small particles of fly ash attached to the filter screen 5, the first baffle 22, the second baffle 23 and the third baffle 24 are further cleaned, thereby improving the cleaning effect and the subsequent cooling and washing effect of the high-temperature coal gas.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with 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 embodiments of the present invention.

Claims

1. A composite bed high temperature coal gas cooling and washing device, comprising a housing (1), characterized in that: The upper end of the shell (1) is provided with an air inlet (11) of a conical structure, and the lower end of the air inlet (11) is connected to a downpipe (12), and a buffer washing mechanism (2) is provided inside the downpipe (12); an ascending cavity is formed between the downpipe (12) and the inner wall of the shell (1), and a filter screen plate (5) is fixedly connected between the lower end of the ascending cavity and the inner wall of the shell (1), and a slag discharge pipe (13) is connected to the lower end of the shell (1); a bottom plate (14) is provided below the shell (1), and four legs (15) are fixedly connected to the outer edge of the upper end surface of the bottom plate (14) at equal intervals in an annular manner, and the upper ends of the legs (15) are fixedly connected to the shell (1); the upper end of the right side surface of the shell (1) is connected to an air outlet pipe (17), and the lower end of the right side surface of the shell (1) is connected to a drain pipe (16); The buffer washing mechanism (2) comprises a sleeve (21), a primary baffle (22) and a water inlet pipe (25); the sleeve (21) is sleeved on the outside of the down pipe (12), and the upper end of the sleeve (21) is fixedly connected to the lower end of the air inlet (11); the down pipe (12) is a rectangular straight tube structure, the sleeve (21) is a circular straight tube structure, and the water inlet pipe (25) penetrates the shell (1) and is connected to the lower end of the left side of the sleeve (21); the primary baffle (22) is fixedly connected to the left and right inner walls of the down pipe (12) in a plurality of groups in a staggered manner and equidistantly downward, and the primary baffle (22) is a rectangular structure; A rectangular cavity is formed inside the primary baffle (22), and the rectangular cavity penetrates to the outer side surface of the downcomer (12); primary water spray holes (221) are evenly formed on the upper end surface of the primary baffle (22) and penetrate to the rectangular cavity; The outer side surface of the sleeve (21) is vertically and equidistantly fixedly connected with a plurality of secondary baffles (23) of annular structure, and the outer edge of the secondary baffle (23) is inclined downward, and an air passage is left between the secondary baffle (23) and the inner wall of the shell (1); the interior of the secondary baffle (23) is a cavity structure, and it penetrates to the inner wall of the sleeve (21), and the lower end surface of the secondary baffle (23) is evenly opened with secondary water spray holes (231) penetrating to the cavity; and the inner wall of the shell (1) is vertically and equidistantly fixedly connected with a plurality of tertiary baffles (24) of annular structure corresponding to the secondary baffle (23), and the tertiary baffle (24) and the secondary baffle (23) are staggered with each other and an air passage is left between the sleeve (21).

2. The composite bed high temperature gas cooling and washing equipment according to claim 1, characterized in that: The lower end of the shell (1) is in a conical structure, and a slag breaking mechanism (3) is arranged inside the shell (1) of the conical structure, and the slag breaking mechanism (3) comprises a motor (31), a driving rod (32), and a spiral blade (33); the driving rod (32) is arranged at a central position inside the shell (1) of the conical structure, and the lower end of the driving rod (32) passes through the slag discharge pipe (13) and is fixedly connected to the output shaft of the motor (31) fixedly connected to the central position of the upper end surface of the bottom plate (14), and the spiral blade (33) is fixedly connected to the outer surface of the driving rod (32).

3. The composite bed high temperature gas cooling and washing equipment according to claim 2, characterized in that: The blade radius of the spiral blade (33) located inside the conical structure shell (1) gradually decreases, while the blade radius located inside the slag discharge pipe (13) remains unchanged; the outer edge of the lower end surface of the spiral blade (33) located inside the conical structure shell (1) is evenly fixedly connected with crushing teeth (34), and the inner wall of the conical structure shell (1) is correspondingly fixedly connected with crushing teeth (34).

4. The composite bed high temperature gas cooling and washing equipment according to claim 2, characterized in that: A fixing ring (35) is rotatably sleeved on the upper end of the driving rod (32) near the spiral blade (33), and a ceramic gasket is fixedly connected to the inner wall of the fixing ring (35). A fixing rod (36) is fixedly connected between the left and right side surfaces of the fixing ring (35) and the inner wall of the outer shell (1).

5. The composite bed high temperature gas cooling and washing equipment according to claim 2, characterized in that: A cleaning mechanism (4) is arranged above the driving rod (32), and the cleaning mechanism (4) comprises a scraper (41) and a support plate (42); the support plate (42) is fixedly connected to the left and right sides of the upper end of the driving rod (32) symmetrically, and the scraper (41) is fixedly connected to the ends of the support plate (42), and the scraper (41) is respectively in contact with the left and right sides of the inner side surface of the filter screen plate (5).

6. The composite bed high temperature gas cooling and washing equipment according to claim 5, characterized in that: A cylindrical tube (43) is fixedly connected symmetrically to the upper end surface of the support plate (42) at a position close to the lower side of the sleeve (21), and a vibrating block (45) is slidably inserted inside the cylindrical tube (43); the upper end of the vibrating block (45) is a hemispherical structure, and a plurality of hemispherical protrusions (46) are fixedly connected to the lower end surface of the sleeve (21) in a corresponding annular manner and at equal intervals.

7. The composite bed high temperature gas cooling and washing equipment according to claim 6, characterized in that: The lower end surface of the vibrating block (45) is fixedly connected to a spring (44), and the lower end of the spring (44) is fixedly connected to the inner bottom of the cylindrical tube (43).

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