Efficient washing device for coking crude synthesis gas

Abstract

The present invention discloses an efficient washing device for coking crude synthesis gas, which relates to the technical field of crude synthesis gas washing. The gas-water mixing structure has a washing water inlet pipe, a crude synthesis gas inlet pipe and a mixing cylinder. The crude synthesis gas inlet pipe tangentially extends into the inner bottom of the mixing cylinder, and the washing water inlet pipe is reversely obliquely inserted into the crude synthesis gas inlet pipe; the bubble-breaking structure has three groups of bubble-breaking elements, and the three groups of bubble-breaking elements are installed on the rotating shaft from bottom to top and driven to rotate by the rotating shaft; the gas-water separation structure has an annular flow channel, a first annular space, a second annular space, a space above the bubble-breaking knife and a space below the mixing cylinder. A washing water outlet is provided at the bottom of the conical head, and a synthesis gas outlet is provided at the top of the elliptical head. The advantages of the present invention are as follows: the reverse oblique insertion structure is adopted for the crude synthesis gas inlet pipe and the washing water inlet pipe, which improves the gas-water mixing effect; the gas-water mixed liquid enters the mixing cylinder through a tangential inlet, the bubbles are gradually broken, the washing efficiency is improved, the washing effect is better, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of crude syngas washing, and particularly to an efficient washing device for coking crude syngas. Background Art

[0002] In the coking process of oil refining engineering, crude syngas is generated. The crude syngas contains some impurities, such as acidic gases, fine ash, etc., and needs to be washed before being sent to the next process. Usually, a washing tower is used to complete this work.

[0003] In the prior art, Patent CN201420626931.8 discloses a crude syngas ash removal device for a entrained flow gasification system. It first passes through a water bath separation tank for ash removal and then enters a washing tower for further purification, and the washing of coking crude syngas is realized through multiple purifications; Patent CN202022714484.X discloses a washing and dust removal device for coal gasification crude syngas. It successively undergoes separation and dust removal, washing and dust removal. First, the crude syngas is preliminarily deashed by centrifugal force, and then washing and deashing are carried out to realize the step-by-step washing of coking crude syngas. However, the crude syngas and washing water in the above patents are only simply vertically mixed, or just contact with the washing water conventionally and are washed step by step through the tray. The mixing is not sufficient, the bubble area formed during washing is large, the washing effect is not ideal, and the washing efficiency is not high. The present invention provides an efficient washing device for coking crude syngas, which has the advantages of low investment, good washing effect, and high washing efficiency compared with a washing tower. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an efficient washing device for coking crude syngas, which can solve the problems in the prior art that the crude syngas and washing water are only simply vertically mixed or just contact with the washing water conventionally and are washed step by step through the tray, the mixing is not sufficient, the bubble area formed during washing is large, the washing effect is not ideal, and the washing efficiency is not high.

[0005] To solve the above technical problem, the technical solution of the present invention is: it includes a housing, the housing has a cylinder body, a conical head provided at the bottom of the cylinder body, and an elliptical head provided at the top of the cylinder body, and is characterized in that: the housing has a gas-water mixing structure, a bubble-breaking structure, and a gas-water separation structure;

[0006] The gas-water mixing structure includes a washing water inlet pipe, a raw syngas inlet pipe, and a mixing cylinder. The mixing cylinder is fixedly arranged inside the cylinder body of the housing. The bottom of the mixing cylinder is provided with a closed bottom plate, and the top of the mixing cylinder is open. The raw syngas inlet pipe penetrates through the cylinder wall of the cylinder body and then penetrates through the cylinder wall of the mixing cylinder and tangentially extends into the inner bottom of the mixing cylinder. The washing water inlet pipe passes through the cylinder wall of the cylinder body below the raw syngas inlet pipe and enters the inside of the cylinder body, and then obliquely inserts into the raw syngas inlet pipe in the reverse direction. When the gas flow of the raw syngas and the water flow of the washing water come into contact, their flowing directions are opposite, resulting in a collision. After the raw syngas and the washing water collide, they are stirred and mixed together to form a gas-water mixture, which tangentially enters the mixing cylinder and spirally rises inside the mixing cylinder. The bubbles in the gas-water mixture gradually move closer to the center of the mixing cylinder;

[0007] The bubble-breaking structure has three sets of bubble-breaking elements, namely a primary bubble-breaking rod, a secondary bubble-breaking rod, and a bubble-breaking knife. The primary bubble-breaking rod, the secondary bubble-breaking rod, and the bubble-breaking knife are sequentially installed on the rotating shaft from bottom to top and are driven to rotate by the rotating shaft. The rotating shaft is driven to rotate by a bubble-breaking motor. The diameter of the primary bubble-breaking rod is larger than that of the secondary bubble-breaking rod. The liquid level height inside the cylinder body of the housing is higher than the setting of the bubble-breaking knife. The bubbles in the gas-water mixture are gradually split and cut into micro-bubbles by the primary bubble-breaking rod, the secondary bubble-breaking rod, and the bubble-breaking knife. The washing water containing impurities generates a centrifugal force under the rotation drive of the bubble-breaking elements, and the impurities move towards the inner wall direction of the cylinder body;

[0008] The gas-water separation structure has an annular flow channel between the outer wall and the inner wall of the mixing cylinder, a first annular space between the outer end of the secondary bubble-breaking rod and the inner wall of the cylinder body, a second annular space between the outer end of the bubble-breaking knife and the inner wall of the cylinder body, the space above the bubble-breaking knife inside the cylinder body, and the space below the mixing cylinder inside the cylinder body. The bottom of the conical head is provided with a washing water outlet. The impurities moving towards the inner wall direction of the cylinder body flow downward along the second annular space, the first annular space, and the annular flow channel, converge in the conical head, and flow away through the washing water outlet. The top of the elliptical head is provided with a syngas outlet. The washed syngas after the micro-bubbles escape from the liquid level inside the cylinder body flows away through the syngas outlet.

[0009] Further, two layers of support ribs are arranged between the outer wall of the mixing cylinder and the inner wall of the cylinder body of the housing. Each layer is evenly distributed with 4 support ribs. The mixing cylinder is fixed inside the cylinder body of the housing through the support ribs. Both ends of each support rib are firmly welded to the outer wall of the mixing cylinder and the inner wall of the cylinder body respectively. The rectangular cross-section of the support rib is vertically arranged to reduce the blockage of the liquid flow.

[0010] Further, the washing water inlet pipe includes a horizontal pipe, a bend joint, and an inclined pipe. The horizontal pipe passes through the cylinder wall of the cylinder body and enters the inside of the cylinder body. The bend joint is connected to one end of the horizontal pipe located inside the cylinder body. The inclined pipe is connected to the end of the bend joint away from the horizontal pipe. The inclined pipe is inclined towards the inlet end of the raw syngas inlet pipe and obliquely inserts into the raw syngas inlet pipe.

[0011] Furthermore, at least two sets of the washing water inlet pipe and the raw syngas inlet pipe are provided.

[0012] Furthermore, a flange is provided at the top of the elliptical head of the housing, the bubble-breaking motor is installed on the flange, and the output shaft of the bubble-breaking motor is connected to the rotating shaft through a coupling.

[0013] Furthermore, the mixing cylinder is located below the internal space of the cylindrical body of the housing. The primary bubble-breaking rod is located near the top opening of the mixing cylinder. The secondary bubble-breaking rod is installed in the cylindrical body of the housing and is located above the mixing cylinder. The bubble-breaking knife is a set of blades with cutting edges. The length of the secondary bubble-breaking rod is greater than that of the primary bubble-breaking rod, and the length of the bubble-breaking knife is greater than that of the secondary bubble-breaking rod.

[0014] Furthermore, the rotation direction of the bubbles in the gas-liquid mixture rising spirally in the mixing cylinder is set opposite to the rotation direction of the rotating shaft.

[0015] The advantages of the present invention are as follows: The raw syngas inlet pipe for transporting raw syngas and the washing water inlet pipe for transporting washing water adopt a reverse inclined insertion structure at the intersection, causing the high-speed water flow and the high-speed gas flow to collide, thereby improving the mixing effect of gas and water.

[0016] The gas-liquid mixture enters the mixing cylinder through a tangential inlet, forming a spiral upward circulating flow, causing the bubbles to gather in the central area, which is conducive to the concentrated splitting and cutting of bubbles by the bubble-breaking elements. The smaller the bubbles, the larger the gas-liquid contact interface area, greatly improving the washing efficiency, achieving a better washing effect, and the equipment has a simple structure and reduced cost.

[0017] The bubble-breaking structure has three sets of bubble-breaking elements. The primary bubble-breaking rod, the secondary bubble-breaking rod, and the bubble-breaking knife are respectively suitable for bubbles of different sizes, gradually breaking the bubbles, and the bubble-breaking elements collide with the bubbles at a relatively high speed, with a high bubble-breaking efficiency.

[0018] While the bubble-breaking elements rotate to break the bubbles, they drive the water flow in the upper part of the cylindrical body to rotate, which is conducive to the rapid separation of water and gas and the movement of impurities in the water towards the inner wall of the cylindrical body, realizing the discharge of the washed syngas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is Figure 1 a sectional view taken along the line A-A in

[0021] Figure 3 is a schematic partial structural diagram of the present invention. EMBODIMENTS

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The following embodiments can enable those skilled in the art to understand the present invention more comprehensively, but do not limit the present invention within the scope of the described embodiments.

[0023] Example 1: As Figure 1 shown, the following technical solution is adopted in this specific embodiment: It includes a housing, the housing has a cylinder body 6, a conical head 2 provided at the bottom of the cylinder body 6, and an elliptical head 11 provided at the top of the cylinder body 6. The cylinder body 6, the conical head 2 and the elliptical head 11 enclose a space. Inside the internal space of the housing, there are a gas-water mixing structure, a bubble-breaking structure, and a gas-water separation structure. The raw syngas and washing water are mixed through the gas-water mixing structure, the bubbles in the gas-water mixture are gradually split and cut through the bubble-breaking structure, and the raw syngas and washing water are separated and discharged through the gas-water separation structure.

[0024] The gas-water mixing structure has a washing water inlet pipe 3, a raw syngas inlet pipe 4, and a mixing cylinder 15. The bottom of the mixing cylinder 15 is provided with a closed bottom plate 16, and the top of the mixing cylinder 15 is open. The mixing cylinder 15 is fixed inside the internal space of the cylinder body 6 of the housing. The mixing cylinder 15 is an open cylindrical container. The mixing cylinder 15 is located in the lower part of the internal space of the cylinder body 6 of the housing in the height direction, and its bottom plate 16 is close to the upper part of the connection weld between the cylinder body 6 and the conical head 2.

[0025] Combined with Figure 2 shown, after the raw syngas inlet pipe 4 penetrates through the cylinder wall of the cylinder body 6 and then penetrates through the cylinder wall of the mixing cylinder 15, it tangentially extends into the bottom of the mixing cylinder 15. The washing water inlet pipe 3 passes through the cylinder wall of the cylinder body 6 below the raw syngas inlet pipe 4 and enters the inside of the cylinder body 6 and then is reversely obliquely inserted into the raw syngas inlet pipe 4. When the gas flow of the raw syngas and the water flow of the washing water contact, their flowing directions are opposite and they collide. After the raw syngas and the washing water collide, they are stirred and mixed together to form a gas-water mixture that tangentially enters the mixing cylinder 15 and spirally rises inside the mixing cylinder 15. The bubbles in the gas-water mixture gradually approach the center of the mixing cylinder 15. The raw syngas inlet pipe 4 for transporting the raw syngas and the washing water inlet pipe 3 for transporting the washing water adopt a reverse oblique insertion structure at the intersection, causing the high-speed water flow and the high-speed gas flow to collide head-on, improving the mixing effect of the gas and water. The gas-water mixture enters the mixing cylinder 15 through the tangential inlet, forming a spiral upward circulation flow, making the bubbles gather in the central area, which is beneficial for the bubble-breaking structure to concentrate on eliminating the bubbles.

[0026] At least two groups of the washing water inlet pipe 3 and the raw syngas inlet pipe 4 are provided, and different raw syngas inlet pipes 4 tangentially extend into the bottom of the mixing cylinder 15 from different positions.

[0027] The bubble-breaking structure has three sets of bubble-breaking elements, namely the primary bubble-breaking rod 7, the secondary bubble-breaking rod 8, and the bubble-breaking knife 9. The primary bubble-breaking rod 7, the secondary bubble-breaking rod 8, and the bubble-breaking knife 9 are sequentially installed on the rotating shaft 10 from bottom to top and are driven to rotate by the rotating shaft 10. The rotating shaft 10 is driven to rotate by a bubble-breaking motor. A flange 12 is provided at the top of the elliptical head 11 of the housing. The bubble-breaking motor is installed on the flange 12. The output shaft of the bubble-breaking motor is connected to the rotating shaft 10 through a coupling. The bubble-breaking motor is not shown in the figure.

[0028] The diameter of the primary bubble-breaking rod 7 is larger than that of the secondary bubble-breaking rod 8. The primary bubble-breaking rod 7 is located near the top opening inside the mixing cylinder 15. The secondary bubble-breaking rod 8 is installed inside the cylindrical body 6 of the housing, and the secondary bubble-breaking rod 8 is located above the mixing cylinder 15. The bubble-breaking knife 9 is a set of blades with cutting edges. The length of the secondary bubble-breaking rod 8 is greater than that of the primary bubble-breaking rod 7, and the length of the bubble-breaking knife 9 is greater than that of the secondary bubble-breaking rod 8.

[0029] Control the liquid level inside the cylindrical body 6 of the housing to be higher than the bubble-breaking knife 9. The bubbles in the gas-liquid mixture are gradually split and cut into micro-bubbles by the primary bubble-breaking rod 7, the secondary bubble-breaking rod 8, and the bubble-breaking knife 9. The smaller the bubbles, the larger the gas-liquid contact interface area, and the washing efficiency is greatly improved, and the washing effect is better. The washing water containing dust, particles, and impurities generates a centrifugal force under the rotation of the bubble-breaking elements. The dust, particles, and impurities move towards the inner wall of the cylindrical body 6. While the bubble-breaking elements rotate to break the bubbles, the water flow in the upper part inside the cylindrical body 6 is driven to rotate, which is conducive to the rapid separation of gas and water and the movement of dust, particles, and impurities in the water towards the inner wall of the cylindrical body 6, realizing the discharge of the washed synthesis gas.

[0030] The gas-liquid separation structure has an annular flow channel between the outer wall of the mixing cylinder 15 and the inner wall of the cylindrical body 6, a first annular space between the outer end of the secondary bubble-breaking rod 8 and the inner wall of the cylindrical body 6, a second annular space between the outer end of the bubble-breaking knife 9 and the inner wall of the cylindrical body 6, a gas rising space above the bubble-breaking knife 9 inside the cylindrical body 6, and a space below the mixing cylinder 15 inside the cylindrical body 6. A washing water outlet 1 is provided at the bottom of the conical head 2. The dust, particles, and impurities moving towards the inner wall of the cylindrical body 6 flow downward along the second annular space, the first annular space, and the annular flow channel and converge in the conical head 2 and flow away through the washing water outlet 1. A flow valve is installed at the washing water outlet 1 to control the flow rate of the outflowing liquid and control the liquid level inside the cylindrical body 6 of the housing.

[0031] A synthesis gas outlet 13 is provided at the top of the elliptical head 11. The synthesis gas outlet 13 is located on one side of the flange 12. The washed synthesis gas after the micro-bubbles escape from the liquid level inside the cylindrical body 6 flows away through the synthesis gas outlet 13.

[0032] The components such as the bubble-breaking motor and the flow valve described above are all common standard components or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or obtained through conventional experimental methods, and will not be elaborated here.

[0033] Working principle: In the working state, the liquid level in the washing device remains at the position as shown in Figure 1 The crude synthesis gas from the coking process flows at a high speed from the crude synthesis gas inlet pipe 4 into the mixing cylinder 15, and the washing water also flows into the crude synthesis gas inlet pipe 4 from the washing water inlet pipe 3 at a very high speed. Due to the high speed and opposite directions of the gas flow and the water flow, intense collisions occur. When the gas and water collide, violent turbulence is generated and they are mixed together; after the gas-water mixture becomes a gas-water liquid mixture, it tangentially enters the mixing cylinder 15 at a high speed. After entering the mixing cylinder 15, it follows a spiral upward path. Since the gas-water liquid mixture rotates while rising, the bubbles gradually move closer to the center of the mixing cylinder 15. When the bubble group rises to near the open position at the inner top of the mixing cylinder 15, it collides with the high-speed rotating first-stage bubble-breaking rod 7. The rotation direction of the bubbles is opposite to the rotation direction of the rotating shaft 10, so the first-stage bubble-breaking rod 7 strikes the bubbles at a very high relative speed, causing them to break into smaller bubbles. The small bubbles continue to rise and are then struck by the high-speed rotating second-stage bubble-breaking rod 8, splitting into finer bubbles. The fine bubbles continue to rise and meet the high-speed rotating bubble-breaking knife 9, and the fine bubbles are further cut into micro-bubbles. The micro-bubbles finally escape from the liquid surface. After the micro-bubbles escape from the liquid surface, it is the washed synthesis gas. After the synthesis gas accumulates in the space above the liquid surface, it flows away from the synthesis gas outlet 13. Whether the washing efficiency is high mainly depends on the bubble-breaking effect. The larger the contact interface area between the gas and the water, the better the washing effect. The smaller the bubbles, the larger the gas-water interface area and the higher the washing efficiency. By using a combination of multiple technologies to split and cut the bubbles, the bubble-breaking element collides with the bubbles at a higher speed, which greatly improves the bubble-breaking efficiency compared to a static bubble-breaking element, and the washing efficiency is significantly improved.

[0034] When the gas-liquid mixture in the mixing cylinder 15 rises to the open top of the mixing cylinder 15, under the action of the first-stage bubble-breaking rod 7, the rotation direction has already been opposite to the original rotation direction. Driven by the second-stage bubble-breaking rod 8 and the bubble-breaking knife 9, this reverse rotation becomes faster and faster. At this time, the bubbles and some washing water with fewer bubbles will gradually move towards the inner wall direction of the cylinder body 6, while the mixed liquid with more bubbles is in the central area of the swirling flow. In this way, a large amount of dust, particles, and impurities washed from the synthesis gas are contained in the outer washing water. This part of the washing water with a larger specific gravity flows downward along the second annular space, the first annular space, and the annular flow channel, converges in the conical head 2, and finally flows away from the washing water outlet 1. By means of a simple structure, a significant improvement in washing efficiency can be achieved and the cost can be reduced.

[0035] Example 2: The difference between this example and Example 1 is as follows. Specifically, as Figure 3 shown, the washing water inlet pipe 3 has a horizontal pipe 31, an elbow joint 32, and an inclined pipe 33. The horizontal pipe 31 passes through the barrel wall of the cylinder body 6 and enters the cylinder body 6. The elbow joint 32 is communicated with one end of the horizontal pipe 31 located inside the cylinder body 6. The inclined pipe 33 is communicated with the end of the elbow joint 32 far from the horizontal pipe 31. The inclined pipe 33 is inclined towards the inlet end of the raw syngas inlet pipe 4, and the inclined pipe 33 is obliquely inserted into the raw syngas inlet pipe 4. The raw syngas from the coking process flows at a high speed from the raw syngas inlet pipe 4 into the mixing cylinder 15, and the washing water also flows into the raw syngas inlet pipe 4 from the washing water inlet pipe 3 at a very high speed. Due to the high speed and opposite directions of the air flow and the water flow, intense collisions are generated. When the gas and water collide, violent disorders will occur and they will be mixed together.

[0036] The rotation direction of the bubbles spirally rising in the gas-liquid mixture in the mixing cylinder 15 is set opposite to the rotation direction of the rotating shaft 10. The first-stage bubble-breaking rod 7 can strike the bubbles at a very high relative speed, causing the bubbles to break into smaller bubbles. The small bubbles continue to rise and are then struck by the second-stage bubble-breaking rod 8 rotating at a high speed, splitting into finer bubbles. The fine bubbles continue to rise and meet the bubble-cutting knife 9 rotating at a high speed, and the fine bubbles are further cut into microbubbles. The microbubbles finally escape from the liquid surface inside the cylinder body 6. After the microbubbles escape from the water surface, it is the washed syngas. After the syngas accumulates in the space above the liquid surface, it flows away from the syngas outlet 13.

[0037] The mixing cylinder 15 is installed and fixed inside the cylinder body 6 of the housing through the support ribs 5. Two layers of support ribs 5 are arranged between the outer wall of the mixing cylinder 15 and the inner wall of the cylinder body 6 of the housing. Each layer is evenly provided with 4 support ribs 5. Both ends of each support rib 5 are firmly welded to the outer wall of the mixing cylinder 15 and the inner wall of the cylinder body 6 respectively. The rectangular cross-section of the support rib 5 is vertically arranged to reduce the blockage of the liquid flow, so that the blockage of the flow is minimized.

[0038] The load-bearing member of the whole device is the ear seat 14. The ear seat 14 is fixedly installed on both sides of the cylinder body 6 of the housing and is installed and fixed to the frame through the ear seat 14.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency washing device for coking crude synthesis gas, comprising a housing, the housing having a cylindrical body, a conical head provided at the bottom of the cylindrical body, and an elliptical head provided at the top of the cylindrical body. It is characterized in that: The housing has a gas-water mixing structure, a bubble-breaking structure, and a gas-water separation structure; The gas-water mixing structure has a washing water inlet pipe, a crude synthesis gas inlet pipe, and a mixing cylinder. The mixing cylinder is fixedly arranged in the cylindrical body of the housing. The bottom of the mixing cylinder is provided with a closed bottom plate, and the top of the mixing cylinder is open. The crude synthesis gas inlet pipe penetrates through the cylindrical wall of the cylindrical body and then penetrates through the cylindrical wall of the mixing cylinder and tangentially extends into the inner bottom of the mixing cylinder. The washing water inlet pipe passes through the cylindrical wall of the cylindrical body below the crude synthesis gas inlet pipe and enters the interior of the cylindrical body and then obliquely inserts into the crude synthesis gas inlet pipe in the reverse direction. When the gas flow of the crude synthesis gas and the water flow of the washing water contact, their flowing directions are opposite, resulting in a collision. After the crude synthesis gas and the washing water collide, they are stirred and mixed together to form a gas-water mixture that tangentially enters the mixing cylinder and spirally rises inside the mixing cylinder. The bubbles in the gas-water mixture gradually move closer to the center of the mixing cylinder. The bubble-breaking structure has three sets of bubble-breaking elements, namely a primary bubble-breaking rod, a secondary bubble-breaking rod, and a bubble-breaking knife. The primary bubble-breaking rod, the secondary bubble-breaking rod, and the bubble-breaking knife are sequentially installed on a rotating shaft from bottom to top and are driven to rotate by the rotating shaft. The rotating shaft is driven to rotate by a bubble-breaking motor. The diameter of the primary bubble-breaking rod is larger than that of the secondary bubble-breaking rod. The liquid level height in the cylindrical body of the housing is higher than the setting of the bubble-breaking knife. The bubbles in the gas-water mixture are gradually split and cut into micro-bubbles by the primary bubble-breaking rod, the secondary bubble-breaking rod, and the bubble-breaking knife. The washing water containing impurities generates a centrifugal force under the rotation drive of the bubble-breaking elements, and the impurities move towards the inner wall direction of the cylindrical body of the housing. The gas-water separation structure has an annular flow channel between the outer wall of the mixing cylinder and the inner wall of the cylindrical body of the housing, a first annular space between the outer end of the secondary bubble-breaking rod and the inner wall of the cylindrical body of the housing, a second annular space between the outer end of the bubble-breaking knife and the inner wall of the cylindrical body of the housing, a space above the bubble-breaking knife in the cylindrical body of the housing, and a space below the mixing cylinder in the cylindrical body of the housing. The bottom of the conical head is provided with a washing water outlet. The impurities moving towards the inner wall direction of the cylindrical body of the housing flow downward along the second annular space, the first annular space, and the annular flow channel and converge in the conical head and flow away through the washing water outlet. The top of the elliptical head is provided with a synthesis gas outlet. The washed synthesis gas after the micro-bubbles escape from the liquid level in the cylindrical body of the housing flows away through the synthesis gas outlet.

2. The high-efficiency washing device for coking crude synthesis gas according to claim 1, It is characterized in that: Two layers of support ribs are arranged between the outer wall of the mixing cylinder and the inner wall of the cylindrical body of the housing. Each layer is evenly provided with 4 support ribs. The mixing cylinder is fixed in the cylindrical body of the housing through the support ribs. The two ends of each support rib are firmly welded to the outer wall of the mixing cylinder and the inner wall of the cylindrical body respectively. The rectangular cross-section of the support rib is vertically arranged to reduce the blockage of liquid flow.

3. The high-efficiency washing device for coking crude synthesis gas according to claim 1, It is characterized in that: The washing water inlet pipe has a horizontal pipe, an elbow joint and an inclined pipe. The horizontal pipe passes through the cylinder wall of the cylinder body and enters the cylinder body. The elbow joint is communicated with one end of the horizontal pipe located inside the cylinder body. The inclined pipe is communicated with the end of the elbow joint far from the horizontal pipe. The inclined pipe is inclined towards the inlet end of the crude syngas inlet pipe and is obliquely inserted into the crude syngas inlet pipe.

4. The high-efficiency washing device for coking crude syngas according to claim 1, characterized in that: at least two groups of the washing water inlet pipe and the crude syngas inlet pipe are provided.

5. The high-efficiency washing device for coking crude syngas according to claim 1, characterized in that: a flange is provided at the top of the elliptical head of the housing, the bubble-breaking motor is installed on the flange, and the output shaft of the bubble-breaking motor is connected to the rotating shaft through a coupling.

6. The high-efficiency washing device for coking crude syngas according to claim 1, characterized in that: the mixing cylinder is located below the inner space of the cylinder body of the housing, the first-stage bubble-breaking rod is located near the top opening inside the mixing cylinder, the second-stage bubble-breaking rod is installed inside the cylinder body of the housing and is located above the mixing cylinder, and the bubble-breaking knife is a group of blades with cutting edges; the length of the second-stage bubble-breaking rod is greater than the length of the first-stage bubble-breaking rod, and the length of the bubble-breaking knife is greater than the length of the second-stage bubble-breaking rod.

7. The high-efficiency washing device for coking crude syngas according to claim 1, characterized in that: the rotation direction of the bubbles in the gas-liquid mixture rising spirally in the mixing cylinder is set opposite to the rotation direction of the rotating shaft.

Images