CN211079061U - Gasifier chilling chamber containing guide cylinder - Google Patents
Gasifier chilling chamber containing guide cylinder Download PDFInfo
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- CN211079061U CN211079061U CN201922243661.8U CN201922243661U CN211079061U CN 211079061 U CN211079061 U CN 211079061U CN 201922243661 U CN201922243661 U CN 201922243661U CN 211079061 U CN211079061 U CN 211079061U
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Abstract
The utility model provides a gasifier chilling chamber containing a guide cylinder, which comprises a shell, wherein a down pipe is arranged in the shell, a coaxial guide cylinder is sleeved outside the down pipe, and an annular gap is formed between the guide cylinder and the down pipe; one end of the downcomer is connected with the gasification furnace, the other end of the downcomer is provided with a gas distribution device, the gas distribution device is a conical section butted with the outer edge of the downcomer, and the conical section is provided with air holes. The utility model forms liquid circulation by arranging the guide cylinder, prevents the deposition of fine coal ash particles, and effectively solves the problem of blockage caused by fine particles; by arranging the gas distribution device, small bubbles can be effectively formed, the interfacial area of the bubbles is increased, and the effects of humidifying, dedusting, ash removing and cooling in water bath are greatly improved, so that the situation that the synthesis gas carries excessive coal ash to enter the next working section is reduced.
Description
Technical Field
The utility model belongs to the technical field of coal gasification equipment, a gasifier chilling chamber is related to, especially relate to a gasifier chilling chamber who contains draft tube.
Background
Coal gasification reaction and separation systems are one of the core devices in coal chemical industry, and the technology of realizing clean coal gasification with high efficiency, low energy consumption and low pollution is increasingly paid attention to by people. The high-pressure and large-capacity entrained flow gasification technology is one of the internationally advanced coal gasification technologies and is widely applied to the coal chemical industry. The modern entrained-flow bed gasification technology mainly comprises coal water slurry gasification and pulverized coal gasification technologies, and has the advantages of small environmental pollution, high automation degree and the like. The entrained flow gasification technology is characterized in that crude gas and molten ash generated in a combustion chamber of a gasification furnace flow in parallel into a chilling chamber for cooling and washing, the ash is discharged from a gasification black water and slag water discharge device after being subjected to chilling washing water bath, and the crude gas enters a crude gas washing system after being cooled and washed. However, the process has the problems of low washing efficiency, ash accumulation in a washer and the like, and influences the normal operation of the gasification device.
CN101935552A discloses a quench chamber assembly for a gasifier, the quench chamber being composed of a quench ring, a downcomer, a riser and a separator baffle. The chilling ring uniformly distributes chilling water on the inner wall of the descending pipe to form a liquid film, so that the descending pipe is protected from being burnt by high-temperature synthesis gas and slag, and the chilling and cooling of the high-temperature synthesis gas are realized. The ascending pipe and the descending pipe are coaxially sleeved, and the pipe is sleeved in the ascending pipe, so that the synthetic gas moves downwards from the descending pipe and then returns to the upper area of the chilling chamber through the annular space between the ascending pipe and the descending pipe. And then gas-liquid separation is realized under the action of the baffle. In practice, fluctuations or oscillations in the flow, such as fluctuations in slag bath level, gas flow rate and pressure, can be caused by the greater velocity of the gas leaving the liquid surface.
CN102585914A discloses a gasification quench chamber and scrubber assembly comprising a sump having a liquid coolant disposed therein in a lower portion and an upper portion comprising an outlet for withdrawing cooled syngas therefrom; a dip tube configured to introduce a syngas mixture to contact the liquid coolant to thereby produce the cooled syngas; a cooling device located in an annular space in the upper portion between the dip tube outer surface and the outer perimeter of the sump, the cooling device comprising heat exchanger tubes configured to further cool the cooled syngas in the upper portion and to increase an effective distance between the liquid coolant and the outlet; and a stability device located in the lower portion configured to mitigate coolant level fluctuations and sloshing.
CN202688282U discloses a gasification furnace, comprising: the air outlet is arranged on the shell; a combustion chamber disposed within the housing; a quench chamber disposed within the housing and below the combustion chamber; the chilling chamber comprises a cavity and a funnel part; the first end of the cavity is connected with the outlet of the combustion chamber, and the second end of the cavity is connected with the inlet of the funnel part; the outlet of the funnel part is connected with the first end of the downcomer; the chilling water spray head is arranged on the inner wall of the cavity; the slag water tank is arranged in the shell and is positioned below the chilling chamber, and the second end of the down pipe is inserted below the liquid level of the slag water tank; and a sealed annular cavity is formed between the shell and the chilling chamber, and the annular cavity is connected with the air outlet.
However, the bubbles in the slag pool are large, so that the phenomenon of air entrainment is easily caused, and the liquid level fluctuation is also caused. Meanwhile, because the liquid circulation in the slag pool is weak, the tiny particles are deposited, and do not leave the system along with the gasified black water in a chilling chamber designed by the gasification furnace, so that a bottom slag discharging port and a liquid level meter are blocked.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model aims to provide a gasifier chilling chamber containing a guide cylinder, which forms liquid circulation by arranging the guide cylinder, prevents fine coal ash particles from depositing and effectively solves the problem of blockage caused by the fine particles; by arranging the gas distribution device, small bubbles can be effectively formed, the interfacial area of the bubbles is increased, and the effects of humidifying, dedusting, ash removing and cooling in water bath are greatly improved, so that the situation that the synthesis gas carries excessive coal ash to enter the next working section is reduced; in addition, the formation of the small bubbles is beneficial to preventing the fluctuation generated by the super large bubbles leaving the liquid level and the engineering problems of liquid level alarming, vehicle jumping and the like.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a gasifier chilling chamber that contains draft tube, gasifier chilling chamber include the casing, the inside downtake that sets up of casing, downtake outside cover be equipped with coaxial draft tube, draft tube and downtake between form the annular space.
One end of the downcomer is connected with the gasification furnace, the other end of the downcomer is provided with a gas distribution device, the gas distribution device is a conical section butted with the outer edge of the downcomer, air holes are formed in the conical section, synthetic gas generated by the gasification furnace enters the downcomer and then passes through the air holes in the conical section to be introduced into the annular space, and the diameter of the conical section is gradually increased along the flow direction of the synthetic gas.
The utility model can effectively form small bubbles by arranging the gas distribution device, increase the interfacial area of the bubbles, greatly improve the effects of humidifying, dedusting and cooling in water bath, thereby reducing the possibility that the synthesis gas carries excessive coal ash to enter the next working section; in addition, the formation of the small bubbles is beneficial to preventing the fluctuation generated by the super large bubbles leaving the liquid level and the engineering problems of liquid level alarming, vehicle jumping and the like.
As a preferred technical proposal of the utility model, the chilling chamber is injected with chilling water, and the draft tube is positioned below the liquid level of the chilling water.
The utility model discloses in, the draft tube sets up below the liquid level of sharp cold water, and this will form the circulation in the inside and outside of draft tube for gasifier exhaust little coal ash particle is in the suspended state, through black water pipeline discharge chilling chamber, is favorable to solving the problem that slag notch and level gauge etc. are blockked up by little fly ash at the bottom of the tower. Meanwhile, the arrangement of the expansion section at the top end of the guide shell enables gas and liquid to be effectively separated, and the problem of water carrying of the synthesis gas is solved.
As an optimized technical scheme of the utility model, the gas pocket set up along the circumference of toper section.
The air holes are round, square, rectangular or annular.
As an optimized technical scheme of the utility model, gas pocket department set up the guide plate.
The utility model discloses in, gas pocket exit welding guide plate can further restrain the phenomenon that the synthetic gas took water.
As an optimized technical scheme of the utility model, the gas outlet end of draft tube is the toper structure, and synthetic gas gets into the gaseous outlet end discharge by the draft tube behind the annular space.
The diameter of the gas outlet end gradually increases along the direction of the synthesis gas flow.
As a preferred technical proposal of the utility model, at least one annular baffle is arranged above the liquid level of the chilling water.
The annular baffle is arranged in an annular cavity formed between the shell and the downcomer.
As an optimized technical proposal of the utility model, the annular baffles are arranged on the inner side wall of the shell and the outer peripheral surface of the downcomer in a staggered way.
The utility model discloses in, the crisscross ring baffle that sets up above the liquid level of chilling chamber can further restrain the phenomenon that synthetic gas took water.
As an optimized technical proposal of the utility model, the junction of the descending pipe and the gasification furnace is provided with a chilling ring, and the chilling ring is used for spraying chilling water into the descending pipe.
As a preferred technical proposal of the utility model, the chilling ring is provided with a nozzle, and chilling water is sprayed out by the nozzle and then descends along the inner wall of the downcomer to form a liquid film.
The chilling ring is externally connected with a chilling water supply pipeline.
The utility model discloses in, the chilling water descends along the downtake inner wall and forms the liquid film, and the liquid film can play the effect that the protection downtake is not burnt out by high temperature synthesis gas and slag, also plays the effect of chilling cooling.
As an optimal technical proposal of the utility model, the bottom of the shell is provided with a slag discharge hole.
The top of the shell is provided with an exhaust port.
The exhaust port is positioned above the annular baffle.
The bottom of the shell is provided with a black water pipeline.
Illustratively, the utility model provides a use method of gasifier quench chamber includes the following step:
and the synthetic gas and the molten slag generated by the gasification furnace enter the downcomer, wherein the synthetic gas enters the downcomer and then passes through the air holes on the conical section to be introduced into the annular space, and the molten slag enters the downcomer and then is deposited and accumulated at the bottom of the chilling chamber of the gasification furnace.
Further, the using method specifically comprises the following steps:
synthetic gas and slag generated by a gasification furnace enter a downcomer, and chilling water is introduced into a chilling ring and sprayed out by a nozzle and then descends along the inner wall of the downcomer to form a liquid film;
(II) the synthesis gas passes through the downcomer, is dispersed into small bubbles through the air holes in the conical section and then enters the annular space, the bubbles are broken by the guide plates arranged at the air holes while the gas passes through the air holes, the size of the bubbles is further reduced, and the bubbles pass through the annular space, are deflected by the annular baffles which are arranged in a staggered mode and then are discharged from the exhaust port;
and (III) the slag passes through the downcomer, then settles and accumulates at the bottom of the chilling chamber of the gasification furnace, is discharged periodically from a slag discharge port, and fine particles in the slag are discharged through a black water pipeline.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses increasing gas distribution device in downtake bottom, having reduced the bubble size that gets into the annular space between downtake and the draft tube, the distribution of synthetic gas is more even, has increased the area of contact of synthetic gas and liquid, improves the water-bath dust removal ash removal cooling effect of synthetic gas greatly, avoids smuggleing secretly too much coal ash and gets into follow-up workshop section. Meanwhile, the guide cylinder enables liquid in the slag pool to form circulation, small particles in the pool are in a suspension state, and then a slag discharge port at the bottom and a liquid level meter of the device cannot be blocked. Finally, the conical opening at the top of the guide cylinder enables gas and liquid to be effectively separated, and entrainment can be greatly reduced.
Drawings
FIG. 1 is a schematic structural view of a quench chamber of a gasifier provided in example 1 of the present invention;
FIG. 2 is a schematic structural view of a quench chamber of a gasifier provided in example 3 of the present invention;
wherein, 1-shell; 2-a downcomer; 3-a guide shell; 4-black water pipeline; 5-a slag discharge port; 6-an exhaust port; 7-a quench ring; 8-a conical section; 9-air holes; 10-a gas outlet end; 11-a gasification furnace; 12-a deflector; 13-ring baffle.
Detailed Description
It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly, and may for example be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
In a specific embodiment, the utility model provides a gasifier chilling chamber that contains draft tube, gasifier chilling chamber as shown in fig. 1 and 2, including casing 1, casing 1 is inside to be set up downcomer 2, and the outer cover of downcomer 2 is equipped with coaxial draft tube 3, forms the annular space between draft tube 3 and downcomer 2. One end of the downcomer 2 is connected with the gasification furnace 11, the other end of the downcomer is provided with a gas distribution device, the gas distribution device is a conical section 8 which is in butt joint with the outer edge of the downcomer 2, air holes 9 are formed in the conical section 8, the synthetic gas generated by the gasification furnace 11 enters the downcomer 2 and then passes through the air holes 9 in the conical section 8 to be introduced into an annular space, and the diameter of the conical section 8 is gradually increased along the flow direction of the synthetic gas.
Chilling water is injected into the chilling chamber, and the guide cylinder 3 is positioned below the liquid level of the chilling water.
The air holes 9 are arranged along the circumference of the conical section 8, the shape of the air holes 9 can be round, square, rectangular or annular, and further, as shown in fig. 2, a guide plate 12 is arranged at the air holes 9.
The gas outlet end 10 of the guide shell 3 is of a conical structure, synthetic gas is discharged from the gas outlet end 10 of the guide shell 3 after entering the annular space, and the diameter of the gas outlet end 10 is gradually increased along the flow direction of the synthetic gas.
As shown in FIG. 2, at least one annular baffle 13 is disposed above the level of the quench water; the annular baffle 13 is arranged in an annular cavity formed between the shell 1 and the downcomer 2, and the annular baffle 13 is arranged on the inner side wall of the shell 1 and the outer peripheral surface of the downcomer 2 in a staggered manner.
A chilling ring 7 is arranged at the joint of the descending pipe 2 and the gasification furnace 11, and the chilling ring 7 is used for spraying chilling water into the descending pipe 2. The chilling ring 7 is provided with a nozzle, chilling water is sprayed out by the nozzle and then descends along the inner wall of the descending pipe 2 to form a liquid film, and the chilling ring 7 is externally connected with a chilling water supply pipeline.
The bottom of the shell 1 is provided with a slag discharge port 5; the top of the shell 1 is provided with an exhaust port 6, and the exhaust port 6 is positioned above the annular baffle 13; the bottom of the shell 1 is provided with a black water pipeline 4.
Example 1
The embodiment provides a chilling chamber of a gasification furnace as shown in figure 1, which comprises a shell 1, wherein a downcomer 2 is arranged inside the shell 1, and a coaxial guide shell 3 is sleeved outside the downcomer 2. An annular space is formed between the guide shell 3 and the downcomer 2. One end of the downcomer 2 is connected with the gasification furnace 11, the other end is provided with a gas distribution device, the gas distribution device is a conical section 8 butted with the outer edge of the downcomer 2, the conical section 8 is provided with gas holes 9, the gas holes 9 are arranged along the circumferential direction of the conical section 8, and the shape of the gas holes 9 is circular. The synthetic gas generated by the gasification furnace 11 enters the downcomer 2 and then passes through the air holes 9 on the conical section 8 to be introduced into the annular space, and the diameter of the conical section 8 is gradually increased along the flow direction of the synthetic gas.
Chilling water is injected into the chilling chamber, and the guide cylinder 3 is positioned below the liquid level of the chilling water.
The gas outlet end 10 of the guide shell 3 is of a conical structure, synthetic gas is discharged from the gas outlet end 10 of the guide shell 3 after entering the annular space, and the diameter of the gas outlet end 10 is gradually increased along the flow direction of the synthetic gas.
A chilling ring 7 is arranged at the joint of the descending pipe 2 and the gasification furnace 11, and the chilling ring 7 is used for spraying chilling water into the descending pipe 2. The chilling ring 7 is provided with a nozzle, chilling water is sprayed out by the nozzle and then descends along the inner wall of the descending pipe 2 to form a liquid film, and the chilling ring 7 is externally connected with a chilling water supply pipeline.
The bottom of the shell 1 is provided with a slag discharge port 5, the top of the shell 1 is provided with an exhaust port 6, and the exhaust port 6 is positioned above the annular baffle 13; the bottom of the shell 1 is provided with a black water pipeline 4.
Example 2
This example provides a method of using the quench chamber of the gasifier of example 1, the method specifically including the steps of:
synthetic gas and slag generated by a gasification furnace 11 enter a downcomer 2, and chilling water is introduced into a chilling ring 7 and sprayed out by a nozzle and then descends along the inner wall of the downcomer 2 to form a liquid film;
(II) the synthesis gas passes through the downcomer 2, is dispersed into small bubbles through the air holes 9 on the conical section 8 and then enters the annular space, and the bubbles pass through the annular space and are discharged from the exhaust port 6;
and (III) the slag passes through the downcomer 2, then settles and accumulates at the bottom of the chilling chamber of the gasification furnace, is periodically discharged from a slag discharge port 5, and fine particles in the slag are discharged through a black water pipeline 4.
Example 3
The embodiment provides a chilling chamber of a gasification furnace as shown in fig. 2, which comprises a shell 1, wherein a downcomer 2 is arranged in the shell 1, a coaxial guide shell 3 is sleeved outside the downcomer 2, and an annular space is formed between the guide shell 3 and the downcomer 2. One end of the downcomer 2 is connected with the gasification furnace 11, the other end of the downcomer is provided with a gas distribution device, the gas distribution device is a conical section 8 which is in butt joint with the outer edge of the downcomer 2, the conical section 8 is provided with gas holes 9, the gas holes 9 are arranged along the circumferential direction of the conical section 8, the gas holes 9 are square, and a guide plate 12 is arranged at the gas holes 9. The synthetic gas generated by the gasification furnace 11 enters the downcomer 2 and then passes through the air holes 9 on the conical section 8 to be introduced into the annular space, and the diameter of the conical section 8 is gradually increased along the flow direction of the synthetic gas.
Chilling water is injected into the chilling chamber, and the guide cylinder 3 is positioned below the liquid level of the chilling water. Three annular baffles 13 are arranged above the liquid level of the chilling water, the annular baffles 13 are arranged in an annular cavity formed between the shell 1 and the downcomer 2, and the annular baffles 13 are arranged on the inner side wall of the shell 1 and the outer peripheral surface of the downcomer 2 in a staggered mode.
The gas outlet end 10 of the guide shell 3 is of a conical structure, synthetic gas is discharged from the gas outlet end 10 of the guide shell 3 after entering the annular space, and the diameter of the gas outlet end 10 is gradually increased along the flow direction of the synthetic gas.
A chilling ring 7 is arranged at the joint of the descending pipe 2 and the gasification furnace 11, and the chilling ring 7 is used for spraying chilling water into the descending pipe 2. The chilling ring 7 is provided with a nozzle, chilling water is sprayed out by the nozzle and then descends along the inner wall of the descending pipe 2 to form a liquid film, and the chilling ring 7 is externally connected with a chilling water supply pipeline.
The bottom of the shell 1 is provided with a slag discharge port 5; the top of the shell 1 is provided with an exhaust port 6, and the exhaust port 6 is positioned above the annular baffle 13; the bottom of the shell 1 is provided with a black water pipeline 4.
Example 4
This example provides a method of using the quench chamber of the gasifier of example 2, including the following steps:
synthetic gas and slag generated by a gasification furnace 11 enter a downcomer 2, and chilling water is introduced into a chilling ring 7 and sprayed out by a nozzle and then descends along the inner wall of the downcomer 2 to form a liquid film;
(II) the synthesis gas passes through the downcomer 2, is dispersed into small bubbles through the air holes 9 on the conical section 8 and then enters the annular space, the bubbles pass through the air holes 9, meanwhile, the guide plates 12 arranged at the air holes 9 carry out bubble breaking treatment on the bubbles, the size of the bubbles is further reduced, and the bubbles pass through the annular space, are deflected by the annular baffles 13 which are arranged in a staggered mode and then are discharged from the exhaust port 6;
and (III) the slag passes through the downcomer 2, then settles and accumulates at the bottom of the chilling chamber of the gasification furnace, is periodically discharged from a slag discharge port 5, and fine particles in the slag are discharged through a black water pipeline 4.
The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (10)
1. The gasifier chilling chamber containing the guide shell is characterized by comprising a shell, wherein a descending pipe is arranged in the shell, a coaxial guide shell is sleeved outside the descending pipe, and an annular gap is formed between the guide shell and the descending pipe;
one end of the downcomer is connected with the gasification furnace, the other end of the downcomer is provided with a gas distribution device, the gas distribution device is a conical section butted with the outer edge of the downcomer, air holes are formed in the conical section, synthetic gas generated by the gasification furnace enters the downcomer and then passes through the air holes in the conical section to be introduced into the annular space, and the diameter of the conical section is gradually increased along the flow direction of the synthetic gas.
2. A quench chamber of a gasifier as claimed in claim 1, wherein quench water is injected into said quench chamber, said draft tube being located below the level of the quench water.
3. The gasifier quench chamber of claim 2, wherein the gas holes are arranged circumferentially of the conical section;
the air holes are round, square, rectangular or annular.
4. The gasifier quench chamber of claim 3 wherein a baffle is disposed at said gas orifice.
5. The gasifier quench chamber of claim 3, wherein the gas outlet end of the draft tube is tapered, and syngas enters the annulus and is discharged through the gas outlet end of the draft tube;
the diameter of the gas outlet end gradually increases along the direction of the synthesis gas flow.
6. The gasifier quench chamber of claim 3 wherein at least one annular baffle is disposed above the level of the quench water;
the annular baffle is arranged in an annular cavity formed between the shell and the downcomer.
7. The gasifier quench chamber of claim 6 wherein the annular baffles are staggered on the inner sidewall of the shell and the outer peripheral surface of the downcomer.
8. The quench chamber of claim 1 wherein a quench ring is provided at the connection of the downcomer and the gasifier, said quench ring being adapted to inject quench water into the downcomer.
9. The quench chamber of claim 8 wherein the quench ring is provided with nozzles, and the quench water sprayed from the nozzles descends along the inner wall of the downcomer to form a liquid film;
the chilling ring is externally connected with a chilling water supply pipeline.
10. The gasifier quench chamber of claim 1 wherein a slag discharge is provided at the bottom of said shell;
the top of the shell is provided with an exhaust port;
the exhaust port is positioned above the annular baffle;
the bottom of the shell is provided with a black water pipeline.
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| CN201922243661.8U CN211079061U (en) | 2019-12-12 | 2019-12-12 | Gasifier chilling chamber containing guide cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112708474A (en) * | 2020-11-30 | 2021-04-27 | 苏州海陆重工股份有限公司 | Chilling device on chilling cylinder of gasification furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112708474A (en) * | 2020-11-30 | 2021-04-27 | 苏州海陆重工股份有限公司 | Chilling device on chilling cylinder of gasification furnace |
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