CN217747019U - Methanol aromatization fluidized bed reactor - Google Patents
Methanol aromatization fluidized bed reactor Download PDFInfo
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- CN217747019U CN217747019U CN202221328849.8U CN202221328849U CN217747019U CN 217747019 U CN217747019 U CN 217747019U CN 202221328849 U CN202221328849 U CN 202221328849U CN 217747019 U CN217747019 U CN 217747019U
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Abstract
A methanol aromatization fluidized bed reactor comprising: the device comprises a shell, a primary cyclone separator, a secondary cyclone separator, a tertiary cyclone separator, a first heat exchange tube group, a second heat exchange tube group and a tubular gas distributor; the bottom of casing is provided with gas inlet and solid material export, is provided with the solid material import on the lateral wall of casing bottom, and each cyclone sets gradually in the top of casing along anticlockwise highly from lower to upper, has set gradually first heat exchange tube group and second heat exchange tube group under each cyclone, and tubular gas distributor is fixed to be set up under the second heat exchange tube group. This design not only drives the reaction product at the barrel internal rotation through the air current, and effective separation weight and the different reaction product of diameter can form the reaction zone of different temperatures through first heat exchange tube group and second heat exchange tube group simultaneously, effectively improve feed gas conversion rate and reaction rate, the reaction product of different sizes and weight of separation that moreover can be accurate.
Description
Technical Field
The utility model relates to a methyl alcohol aromatization fluidized bed reactor especially relates to a fluidized bed reactor who has the different reaction product of separation that the reaction zone of two different temperatures can be accurate simultaneously.
Background
The methanol aromatization is a production process for converting methanol into aromatic hydrocarbon by performing a series of chemical reactions of aromatization, alkylation, isomerization, hydrogen transfer, dehydrocyclization, hydrocracking and the like on the methanol under the action of a catalyst;
at present, the methanol aromatization reaction is generally to convert synthesis gas into methanol at 200-300 ℃ through a methanol synthesis catalyst by a one-stage fluidized bed reactor, simultaneously convert the methanol into aromatic hydrocarbon at 350-500 ℃ through a methanol-to-aromatic hydrocarbon catalyst, after the reaction, gas-solid separation is carried out on tail gas through a two-reaction separation device, and product gas is discharged from a top outlet.
Although the fluidized bed reactor can carry out zoned reaction on the synthetic methanol and the generated aromatic hydrocarbon, the fluidized bed reactor can realize the control of different temperatures. But it still has the following drawbacks:
1. the reaction space velocity of methanol synthesis is high, the reaction space velocity of aromatization is low, the temperatures required by the two reactions are different, the control and integration requirements on the heat exchange mode of the exothermic reaction are higher, the traditional reactor cannot meet the reaction requirements, and the reaction rate is low while the conversion rate of raw material gas is low.
2. The catalyst life is too short and the reactor cannot operate continuously, and the catalyst must be regenerated periodically.
Disclosure of Invention
The utility model aims at overcoming the problem that the conversion rate of raw material gas is low at the bottom of the reaction rate that exists among the prior art, providing a reaction zone that has two different temperatures can be simultaneously through the methanol aromatization fluidized bed reactor of the different reaction product of the accurate separation of multistage cyclone.
In order to realize the above purpose, the technical proposal of the utility model is that:
a methanol aromatization fluidized bed reactor comprising: the device comprises a shell, a first-stage cyclone separator, a second-stage cyclone separator, a third-stage cyclone separator, a first heat exchange tube group, a second heat exchange tube group and a tubular gas distributor; the bottom of the shell is provided with a gas inlet and a solid material outlet, the side wall of the bottom of the shell is provided with a solid material inlet, the primary cyclone separator, the secondary cyclone separator, the tertiary cyclone separator, the first heat exchange tube group and the second heat exchange tube group are fixedly arranged in the shell, the primary cyclone separator, the secondary cyclone separator and the tertiary cyclone separator are sequentially arranged at the top of the shell from bottom to top along the anticlockwise height, an air inlet at the top of the primary cyclone separator is arranged in the shell, an air outlet at the top of the primary cyclone separator is communicated with an air inlet at the middle of the secondary cyclone separator, an air outlet at the top of the secondary cyclone separator is communicated with an air inlet at the middle of the tertiary cyclone separator, the bottoms of the primary cyclone separator, the secondary cyclone separator and the tertiary cyclone separator are respectively provided with a rotary material leg, each rotary material leg is arranged at the middle of the shell, the first heat exchange tube group is arranged close to the bottom of the rotary material leg, the second heat exchange tube group is arranged under the first heat exchange tube group, the gas distributor is fixedly arranged under the second heat exchange tube group, and the side wall of the gas distributor is communicated with an air inlet pipeline of the shell after the gas distributor is distributed.
The casing includes casing, lower casing and transition pipe, the diameter of going up the casing is greater than the diameter of casing down, the diameter of transition pipe reduces from top to bottom gradually, it is as an organic whole through transition union coupling with the top of casing down to go up the bottom of casing, go up sealed cooperation between casing and the transition pipe, sealed cooperation between transition pipe and the casing down.
First heat exchange tube group includes two heat exchange tube support frames, two heat exchange tube clamps and many coil pipes, two heat exchange tube support frames are fixed in on the inner wall of casing respectively from top to bottom, two heat exchange tube clamps all set up between two heat exchange tube support frames, a plurality of corresponding tube holes have all been seted up on two heat exchange tube clamps and two heat exchange tube support frames, many coil pipes are connected with heat exchange tube clamp and heat exchange tube support frame after passing the tube hole respectively, the inlet and the liquid outlet of many coil pipes are linked together with outside cooling water pipeline after passing the lateral wall of casing respectively.
The one-level cyclone separator comprises a barrel body, a top cover, an air inlet, a cone body, an ash bucket, a central tube, a first air outlet and a rotary material leg, wherein the top cover is fixedly arranged at the top of the barrel body, the air inlet is fixedly arranged on the side wall of the barrel body, the direction of an air inlet opening is tangent to the direction of the outer wall of the barrel body, the cone body is fixedly arranged at the bottom of the barrel body, the diameter of the cone body is gradually reduced from top to bottom, the bottom of the cone body penetrates through the top of the ash bucket and then is fixed into a whole with the ash bucket, the rotary material leg is arranged at the bottom of the ash bucket, the central tube penetrates through the top cover and then is fixedly connected with the top cover, the top of the central tube is sealed through the central tube cover, the bottom of the central tube is higher than the top of the cone body, and the first air outlet is formed at the top of the central tube.
The structure of the first-stage cyclone separator, the structure of the second-stage cyclone separator and the structure of the third-stage cyclone separator are the same, the top of the third-stage cyclone separator is provided with a second air outlet, the top of each of the second-stage cyclone separator and the third-stage cyclone separator is provided with an air supplementing pipe, and the air supplementing pipes are communicated with a compressed air source.
The second heat exchange tube group includes two ring canals, many connecting pipes and many heat transfer steel pipes, two ring canals from top to bottom follow the horizontal direction cover in proper order and locate on the casing, two ring canals respectively are through the outer wall fixed connection of a plurality of triangle-shaped support frames with the casing, all fixed many connecting pipes that are provided with on two ring canals, many connecting pipes all pass behind the lateral wall of casing and the top fixed connection of a heat transfer steel pipe, each ring canal all is linked together with each heat transfer steel pipe through the connecting pipe that sets up on it.
The fluidized bed reactor further comprises an inner overflow pipe, the inner overflow pipe is fixedly connected with the inner wall of the shell through a plurality of inner overflow pipe support frames arranged on the side portion of the inner overflow pipe, an overflow port is formed in the top of the inner overflow pipe, the overflow port is close to the first heat exchange pipe set, an inner overflow pipe reverse taper is arranged at the bottom of the inner overflow pipe, and the inner overflow pipe reverse taper is close to the second heat exchange pipe set.
The fluidized bed reactor also comprises a plate distributor, and the plate distributor is fixedly arranged between the first heat exchange tube group and the second heat exchange tube group.
The lateral part of casing is provided with three access hole from top to bottom, and the access hole at top flushes with second grade cyclone, and the access hole at middle part sets up between each cyclone and first heat exchange tube group, and the access hole of bottom sets up between first heat exchange tube group and second heat exchange tube group.
The side wall of the shell is also provided with a plurality of pressure gauge mounting ports, a plurality of thermometer mounting ports and a plurality of sampling ports.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model relates to a methyl alcohol aromatization fluidized bed reactor's casing has set gradually multistage cyclone from top to bottom in, first heat exchange tube group and second heat exchange tube group, solid material and gaseous material get into the casing through the gas feed and the solid material import of casing bottom respectively after, in first heat exchange tube group and second heat exchange tube group department take place the reaction respectively, separate for two upper and lower reaction regions through plate distributor between first heat exchange tube group and the second heat exchange tube group, the product that the reaction was accomplished separates the back through multistage cyclone, gaseous product leaves fluidized bed reactor through the air outlet, the required catalyst of reaction returns the reaction region that the casing corresponds after the ash bucket design of different cyclone bottoms, participate in the reaction again. Therefore, the first heat exchange tube group and the second heat exchange tube group can form reaction areas with different temperatures, and the conversion rate of raw material gas and the reaction speed are effectively improved.
2. The utility model relates to a cyclone separator among methyl alcohol aromatization fluidized bed reactor includes the barrel, the top cap, the air intake, the awl barrel, ash bucket and center tube, the fixed top cap that is provided with in top of barrel, the fixed air intake that is provided with on the lateral wall of barrel, air intake open-ended direction is tangent with the outer wall direction of barrel, the fixed awl barrel that is provided with in bottom of barrel, the diameter of the awl barrel reduces gradually from top to bottom, the bottom of the awl barrel is fixed as an organic whole with the ash bucket after passing the top of ash bucket, the center tube passes behind the top cap with top cap fixed connection, the top of center tube is sealed through the center tube lid, the height that highly is higher than the awl barrel top of center tube bottom, reaction product and the mixture of air current get into behind the barrel by the air intake, the great reaction product of weight and diameter can follow the rotation of barrel inner wall, and fall under the influence of gravity, collect through the ash bucket, the reaction product that weight and diameter are less leaves the cyclone separator through the center tube under the air current drives. Therefore, the design can drive the reaction products to rotate in the cylinder body through the airflow, and the reaction products with different weights and diameters can be effectively separated.
3. The utility model relates to a methanol aromatization fluidized bed reactor is provided with interior overflow pipe in, the catalyst that separates through cyclone is in first heat exchange tube group department, interior overflow pipe for cyclone at different levels can separate the not reaction product of equidimension and weight. Therefore, the design can accurately separate reaction products with different sizes and weights through the multi-stage cyclone separator, the application range of the cyclone separator is effectively enlarged, and the separation precision is effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the cyclone separator of fig. 1.
Figure 3 is a top view of the cyclone separator of figure 1.
Fig. 4 is a schematic structural view of the first heat exchange tube bank in fig. 1.
Fig. 5 is a schematic view of the second heat exchange tube set in fig. 1.
In the figure: the device comprises a shell 1, an upper shell 11, a lower shell 12, a transition pipe 13, a gas inlet 14, a solid material outlet 15, a solid material inlet 16, a pressure gauge mounting port 17, a thermometer mounting port 18, a sampling port 19, a primary cyclone separator 2, a cylinder 21, a top cover 22, an air inlet 23, a conical cylinder 24, an ash bucket 25, a central pipe 26, a first air outlet 27, a material rotating leg 28, a secondary cyclone separator 3, a tertiary cyclone separator 4, a second air outlet 41, a first heat exchange pipe group 5, a heat exchange pipe support frame 51, a heat exchange pipe clamp 52, a coil 53, a second heat exchange pipe group 6, a ring pipe 61, a connecting pipe 62, a heat exchange steel pipe 63, a triangular support frame 64, a tubular gas distributor 7, an inner overflow pipe 8, a plate distributor 9 and an overhaul port 10.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 5, a methanol aromatization fluidized bed reactor comprising: the device comprises a shell 1, a first-stage cyclone separator 2, a second-stage cyclone separator 3, a third-stage cyclone separator 4, a first heat exchange tube group 5, a second heat exchange tube group 6 and a tubular gas distributor 7; the cyclone separator comprises a shell 1, and is characterized in that a gas inlet 14 and a solid material outlet 15 are arranged at the bottom of the shell 1, a solid material inlet 16 is arranged on the side wall of the bottom of the shell 1, a primary cyclone separator 2, a secondary cyclone separator 3, a tertiary cyclone separator 4, a first heat exchange tube group 5 and a second heat exchange tube group 6 are fixedly arranged in the shell 1, the primary cyclone separator 2, the secondary cyclone separator 3 and the tertiary cyclone separator 4 are sequentially arranged at the top of the shell 1 from bottom to top along the counterclockwise height, an air inlet at the top of the primary cyclone separator 2 is arranged in the shell 1, an air outlet at the top of the primary cyclone separator 2 is communicated with an air inlet at the middle of the secondary cyclone separator 3, an air outlet at the top of the secondary cyclone separator 3 is communicated with an air inlet at the middle of the tertiary cyclone separator 4, rotary legs 28 are arranged at the bottoms of the primary cyclone separator 2, the secondary cyclone separator 3 and the tertiary cyclone separator 4, each rotary leg 28 is arranged at the middle of the heat pipe shell 1, the first heat exchange tube group 5 is arranged at the bottom of the rotary leg 28, the second heat exchange tube group 6 is arranged below the first heat exchange tube group 5, a gas inlet 7 is arranged below the heat exchanger 1, and a pipeline 7 is distributed below the heat exchanger 1.
The first heat exchange tube group 5 comprises two heat exchange tube support frames 51, two heat exchange tube clamps 52 and a plurality of coil pipes 53, the two heat exchange tube support frames 51 are fixed on the inner wall of the shell 1 from top to bottom respectively, the two heat exchange tube clamps 52 are arranged between the two heat exchange tube support frames 51, a plurality of corresponding tube holes are formed in the two heat exchange tube clamps 52 and the two heat exchange tube support frames 51 respectively, the plurality of coil pipes 53 penetrate through the tube holes and then are connected with the heat exchange tube clamps 52 and the heat exchange tube support frames 51, and liquid inlets and liquid outlets of the plurality of coil pipes 53 penetrate through the side wall of the shell 1 and then are communicated with an external cooling water pipeline respectively.
The primary cyclone separator 2 comprises a cylinder body 21, a top cover 22, an air inlet 23, a cone body 24, an ash bucket 25, a central pipe 26, a first air outlet 27 and a material rotating leg 28, the top cover 22 is fixedly arranged at the top of the cylinder body 21, the air inlet 23 is fixedly arranged on the side wall of the cylinder body 21, the opening direction of the air inlet 23 is tangent to the direction of the outer wall of the cylinder body 21, the cone body 24 is fixedly arranged at the bottom of the cylinder body 21, the diameter of the cone body 24 is gradually reduced from top to bottom, the bottom of the cone body 24 penetrates through the top of the ash bucket 25 and then is fixed with the ash bucket 25 into a whole, the material rotating leg 28 is arranged at the bottom of the ash bucket 25, the central pipe 26 penetrates through the top cover 22 and then is fixedly connected with the top cover 22, the top of the central pipe 26 is sealed through a central pipe cover, the bottom of the central pipe 26 is higher than the top of the cone body 24, and the first air outlet 27 is formed at the top of the central pipe 26.
The structure of the first-stage cyclone separator 2, the structure of the second-stage cyclone separator 3 and the structure of the third-stage cyclone separator 4 are the same, the top of the third-stage cyclone separator 4 is provided with a second air outlet 41, the top of the second-stage cyclone separator 3 and the top of the third-stage cyclone separator 4 are respectively provided with an air supplementing pipe, and the air supplementing pipes are communicated with a compressed air source.
The second heat exchange tube set 6 comprises two ring tubes 61, a plurality of connecting tubes 62 and a plurality of heat exchange steel tubes 63, the two ring tubes 61 are sequentially sleeved on the casing 1 from top to bottom along the horizontal direction, the two ring tubes 61 are respectively fixedly connected with the outer wall of the casing 1 through a plurality of triangular support frames 64, the two ring tubes 61 are respectively and fixedly provided with the plurality of connecting tubes 62, the plurality of connecting tubes 62 are respectively fixedly connected with the top of one heat exchange steel tube 63 after penetrating through the side wall of the casing 1, and each ring tube 61 is communicated with each heat exchange steel tube 63 through the connecting tube 62 arranged on the ring tube 61.
The fluidized bed reactor further comprises an inner overflow pipe 8, the inner overflow pipe 8 is fixedly connected with the inner wall of the shell 1 through a plurality of inner overflow pipe support frames arranged on the side portions of the inner overflow pipe 8, an overflow port is formed in the top of the inner overflow pipe 8, the overflow port is close to the first heat exchange tube set 5, an inner overflow pipe reverse taper is arranged at the bottom of the inner overflow pipe 8, and the inner overflow pipe reverse taper is close to the second heat exchange tube set 6.
The fluidized bed reactor also comprises a plate distributor 9, and the plate distributor 9 is fixedly arranged between the first heat exchange tube group 5 and the second heat exchange tube group 6.
The side part of the shell 1 is provided with three access holes 10 from top to bottom, the access hole 10 at the top is flush with the secondary cyclone separators 3, the access hole 10 at the middle part is arranged between each cyclone separator and the first heat exchange tube group 5, and the access hole 10 at the bottom is arranged between the first heat exchange tube group 5 and the second heat exchange tube group 6.
The side wall of the shell 1 is also provided with a plurality of pressure gauge mounting ports 17, a plurality of thermometer mounting ports 18 and a plurality of sampling ports 19.
The principle of the utility model is explained as follows:
when the design is used, solid raw materials and gas raw materials enter the shell through a gas inlet 14 and a solid material inlet 16 at the bottom of the shell 1, methanol is generated in a reaction position of the second heat exchange tube group 6, aromatic hydrocarbon, light hydrocarbon and water are generated in a reaction mode in the first heat exchange tube group 5 after the methanol is generated, final reaction products are separated through the first-stage cyclone separator 2, the second-stage cyclone separator 3 and the third-stage cyclone separator 4, the gas products enter a gas pipeline through the second air outlet 41, and the catalyst is recovered through the rotary material legs 28 at the bottom of each stage of cyclone separator.
Example 1:
a methanol aromatization fluidized bed reactor comprising: the device comprises a shell 1, a first-stage cyclone separator 2, a second-stage cyclone separator 3, a third-stage cyclone separator 4, a first heat exchange tube group 5, a second heat exchange tube group 6 and a tubular gas distributor 7; the bottom of the shell 1 is provided with a gas inlet 14 and a solid material outlet 15, the side wall of the bottom of the shell 1 is provided with a solid material inlet 16, the primary cyclone separator 2, the secondary cyclone separator 3, the tertiary cyclone separator 4, the first heat exchange tube group 5 and the second heat exchange tube group 6 are all fixedly arranged in the shell 1, the primary cyclone separator 2, the secondary cyclone separator 3 and the tertiary cyclone separator 4 are sequentially arranged at the top of the shell 1 from bottom to top along the counterclockwise height, an air inlet at the top of the primary cyclone separator 2 is arranged in the shell 1, an air outlet at the top of the primary cyclone separator 2 is communicated with an air inlet at the middle of the secondary cyclone separator 3, an air outlet at the top of the secondary cyclone separator 3 is communicated with an air inlet at the middle of the tertiary cyclone separator 4, the bottoms of the primary cyclone separator 2, the secondary cyclone separator 3 and the tertiary cyclone separator 4 are all provided with rotary material legs 28, each rotary material leg 28 is arranged at the middle of the shell 1, the first heat exchange tube group 5 is arranged near the bottom of the material leg 28, the second heat exchange tube group 6 is arranged below the first heat exchange tube group 5, and the gas exchange tube group 7 is distributed below the heat exchanger 1, and the heat exchange tube group 7 is distributed below the heat exchanger 1; the shell 1 comprises an upper shell 11, a lower shell 12 and a transition pipe 13, wherein the diameter of the upper shell 11 is larger than that of the lower shell 12, the diameter of the transition pipe 13 is gradually reduced from top to bottom, the bottom of the upper shell 11 and the top of the lower shell 12 are connected into a whole through the transition pipe 13, the upper shell 11 and the transition pipe 13 are in sealing fit, and the transition pipe 13 and the lower shell 12 are in sealing fit; the first heat exchange tube group 5 comprises two heat exchange tube support frames 51, two heat exchange tube clamps 52 and a plurality of coil pipes 53, the two heat exchange tube support frames 51 are respectively fixed on the inner wall of the shell 1 from top to bottom, the two heat exchange tube clamps 52 are respectively arranged between the two heat exchange tube support frames 51, the two heat exchange tube clamps 52 and the two heat exchange tube support frames 51 are respectively provided with a plurality of corresponding tube holes, the plurality of coil pipes 53 are respectively connected with the heat exchange tube clamps 52 and the heat exchange tube support frames 51 after penetrating through the tube holes, and liquid inlets and liquid outlets of the plurality of coil pipes 53 are respectively communicated with an external cooling water pipeline after penetrating through the side wall of the shell 1; the primary cyclone separator 2 comprises a cylinder 21, a top cover 22, an air inlet 23, a cone body 24, an ash bucket 25, a central tube 26, a first air outlet 27 and a material rotating leg 28, wherein the top cover 22 is fixedly arranged at the top of the cylinder 21, the air inlet 23 is fixedly arranged on the side wall of the cylinder 21, the opening direction of the air inlet 23 is tangential to the outer wall direction of the cylinder 21, the cone body 24 is fixedly arranged at the bottom of the cylinder 21, the diameter of the cone body 24 is gradually reduced from top to bottom, the bottom of the cone body 24 penetrates through the top of the ash bucket 25 and then is fixed with the ash bucket 25 into a whole, the material rotating leg 28 is arranged at the bottom of the ash bucket 25, the central tube 26 penetrates through the top cover 22 and then is fixedly connected with the top cover 22, the top of the central tube 26 is sealed through a central tube cover, the bottom of the central tube 26 is higher than the top of the cone body 24, and the top of the central tube 26 is provided with the first air outlet 27; the primary cyclone separator 2, the secondary cyclone separator 3 and the tertiary cyclone separator 4 have the same structure, the top of the tertiary cyclone separator 4 is provided with a second air outlet 41, the tops of the secondary cyclone separator 3 and the tertiary cyclone separator 4 are respectively provided with an air supplementing pipe, and the air supplementing pipes are communicated with a compressed air source; the second heat exchange tube set 6 comprises two circular tubes 61, a plurality of connecting tubes 62 and a plurality of heat exchange steel tubes 63, the two circular tubes 61 are sequentially sleeved on the shell 1 from top to bottom along the horizontal direction, the two circular tubes 61 are respectively fixedly connected with the outer wall of the shell 1 through a plurality of triangular support frames 64, the two circular tubes 61 are respectively and fixedly provided with the plurality of connecting tubes 62, the plurality of connecting tubes 62 are respectively and fixedly connected with the top of one heat exchange steel tube 63 after penetrating through the side wall of the shell 1, and each circular tube 61 is communicated with each heat exchange steel tube 63 through the connecting tube 62 arranged thereon; the fluidized bed reactor further comprises an inner overflow pipe 8, the inner overflow pipe 8 is fixedly connected with the inner wall of the shell 1 through a plurality of inner overflow pipe support frames arranged on the side part of the inner overflow pipe 8, an overflow port is formed in the top of the inner overflow pipe 8, the overflow port is arranged close to the first heat exchange tube group 5, an inner overflow pipe reverse taper is arranged at the bottom of the inner overflow pipe 8, and the inner overflow pipe reverse taper is arranged close to the second heat exchange tube group 6; the fluidized bed reactor also comprises a plate distributor 9, and the plate distributor 9 is fixedly arranged between the first heat exchange tube group 5 and the second heat exchange tube group 6.
Example 2:
example 2 is substantially the same as example 1 except that:
the side part of the shell 1 is provided with three access holes 10 from top to bottom, the access hole 10 at the top is flush with the secondary cyclone separators 3, the access hole 10 at the middle part is arranged between each cyclone separator and the first heat exchange tube group 5, and the access hole 10 at the bottom is arranged between the first heat exchange tube group 5 and the second heat exchange tube group 6.
Example 3:
example 3 is substantially the same as example 2, except that:
the side wall of the shell 1 is also provided with a plurality of pressure gauge mounting ports 17, a plurality of thermometer mounting ports 18 and a plurality of sampling ports 19.
Claims (10)
1. A methanol aromatization fluidized bed reactor is characterized in that:
the fluidized bed reactor includes: the device comprises a shell (1), a primary cyclone separator (2), a secondary cyclone separator (3), a tertiary cyclone separator (4), a first heat exchange tube set (5), a second heat exchange tube set (6) and a tubular gas distributor (7); the bottom of the shell (1) is provided with a gas inlet (14) and a solid material outlet (15), the side wall of the bottom of the shell (1) is provided with a solid material inlet (16), the primary cyclone separator (2), the secondary cyclone separator (3), the tertiary cyclone separator (4), the first heat exchange tube set (5) and the second heat exchange tube set (6) are fixedly arranged in the shell (1), the primary cyclone separator (2), the secondary cyclone separator (3) and the tertiary cyclone separator (4) are sequentially arranged at the top of the shell (1) from bottom to top along the anticlockwise height, an air inlet at the top of the primary cyclone separator (2) is formed in the shell (1), an air outlet at the top of the primary cyclone separator (2) is communicated with an air inlet at the middle of the secondary cyclone separator (3), an air outlet at the top of the secondary cyclone separator (3) is communicated with an air inlet at the middle of the tertiary cyclone separator (4), the bottom of the primary cyclone separator (2), the secondary cyclone separator (3) and the tertiary cyclone separator (4) is provided with a material inlet at the middle of the third heat exchange tube set (6), each material leg (28) is arranged at the bottom of the first heat exchange tube set (6), and the first heat exchange tube set (6) is arranged at the bottom of the second heat exchange tube set (6), the tubular gas distributor (7) is fixedly arranged right below the second heat exchange tube set (6), and a gas inlet of the tubular gas distributor (7) penetrates through the side wall of the shell (1) and then is communicated with a gas inlet pipeline.
2. A methanol aromatization fluidized bed reactor according to claim 1 characterized in that:
casing (1) includes casing (11), casing (12) and transition pipe (13) down, the diameter of going up casing (11) is greater than the diameter of casing (12) down, the diameter of transition pipe (13) from top to bottom reduces gradually, it is as an organic whole through transition pipe (13) to connect in the bottom of going up casing (11) and the top of casing (12) down, go up sealed cooperation between casing (11) and transition pipe (13), sealed cooperation between transition pipe (13) and the lower casing (12).
3. A methanol aromatization fluidized bed reactor according to claim 2 wherein:
the first heat exchange tube group (5) comprises two heat exchange tube support frames (51), two heat exchange tube clamps (52) and a plurality of coil pipes (53), the two heat exchange tube support frames (51) are fixed on the inner wall of the shell (1) from top to bottom respectively, the two heat exchange tube clamps (52) are arranged between the two heat exchange tube support frames (51), a plurality of corresponding tube holes are formed in the two heat exchange tube clamps (52) and the two heat exchange tube support frames (51), the plurality of coil pipes (53) are connected with the heat exchange tube clamps (52) and the heat exchange tube support frames (51) after penetrating through the tube holes respectively, and liquid inlets and liquid outlets of the plurality of coil pipes (53) are communicated with an external cooling water pipeline after penetrating through the side wall of the shell (1) respectively.
4. A methanol aromatization fluidized bed reactor according to claim 3 wherein:
one-level cyclone (2) includes barrel (21), top cap (22), air intake (23), awl barrel (24), ash bucket (25), center tube (26), first air outlet (27) and revolves dipleg (28), the fixed top cap (22) that is provided with in top of barrel (21), fixed air intake (23) that is provided with on the lateral wall of barrel (21), air intake (23) open-ended direction is tangent with the outer wall direction of barrel (21), the fixed awl barrel (24) that is provided with in bottom of barrel (21), the diameter of awl barrel (24) reduces from top to bottom gradually, the bottom of awl barrel (24) is fixed as an organic whole with ash bucket (25) after passing the top of ash bucket (25), the bottom of ash bucket (25) is provided with revolves dipleg (28), center tube (26) pass after top cap (22) and top cap (22) fixed connection, the top of center tube (26) is sealed through center tube cap, the height that highly is higher than awl barrel (24) bottom is seted up the top of first air outlet (27).
5. A methanol aromatization fluidized bed reactor according to claim 4 wherein:
the structure of the first-stage cyclone separator (2), the second-stage cyclone separator (3) and the third-stage cyclone separator (4) is the same, the second air outlet (41) is formed in the top of the third-stage cyclone separator (4), the top of each of the second-stage cyclone separator (3) and the top of the third-stage cyclone separator (4) are respectively provided with an air supplementing pipe, and the air supplementing pipes are communicated with a compressed air source.
6. A methanol aromatization fluidized bed reactor according to any one of claims 1 to 5 characterized in that:
the second heat exchange tube group (6) comprises two ring tubes (61), a plurality of connecting tubes (62) and a plurality of heat exchange steel tubes (63), the two ring tubes (61) are sequentially sleeved on the shell (1) along the horizontal direction from top to bottom, the two ring tubes (61) are respectively fixedly connected with the outer wall of the shell (1) through a plurality of triangular supporting frames (64), the two ring tubes (61) are respectively and fixedly provided with the plurality of connecting tubes (62), the plurality of connecting tubes (62) penetrate through the side wall of the shell (1) and then are fixedly connected with the top of one heat exchange steel tube (63), and each ring tube (61) is communicated with each heat exchange steel tube (63) through the connecting tube (62) arranged on the ring tube.
7. A methanol aromatization fluidized bed reactor according to claim 6 wherein:
the fluidized bed reactor further comprises an inner overflow pipe (8), the inner overflow pipe (8) is fixedly connected with the inner wall of the shell (1) through a plurality of inner overflow pipe support frames arranged on the side portions of the inner overflow pipe (8), an overflow port is formed in the top of the inner overflow pipe (8), the overflow port is close to a first heat exchange pipe set (5), an inner overflow pipe reverse taper is arranged at the bottom of the inner overflow pipe (8), and the inner overflow pipe reverse taper is close to a second heat exchange pipe set (6).
8. A methanol aromatization fluidized bed reactor according to claim 7 wherein:
the fluidized bed reactor also comprises a plate distributor (9), and the plate distributor (9) is fixedly arranged between the first heat exchange tube set (5) and the second heat exchange tube set (6).
9. A methanol aromatization fluidized bed reactor according to claim 8 characterized in that:
the side part of the shell (1) is provided with three access holes (10) from top to bottom, the access hole (10) at the top is flush with the secondary cyclone separators (3), the access hole (10) at the middle part is arranged between each cyclone separator and the first heat exchange tube set (5), and the access hole (10) at the bottom is arranged between the first heat exchange tube set (5) and the second heat exchange tube set (6).
10. A methanol aromatization fluidized bed reactor according to claim 9 characterized in that:
the side wall of the shell (1) is also provided with a plurality of pressure gauge mounting ports (17), a plurality of thermometer mounting ports (18) and a plurality of sampling ports (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221328849.8U CN217747019U (en) | 2022-05-30 | 2022-05-30 | Methanol aromatization fluidized bed reactor |
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