CN211936349U - Efficient graphite shell and tube gas absorber - Google Patents

Efficient graphite shell and tube gas absorber Download PDF

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CN211936349U
CN211936349U CN202020503138.4U CN202020503138U CN211936349U CN 211936349 U CN211936349 U CN 211936349U CN 202020503138 U CN202020503138 U CN 202020503138U CN 211936349 U CN211936349 U CN 211936349U
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tube
shell
graphite
plate
cover plate
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夏亦秋
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TAICANG SHUANGYI CHEMICAL ANTI
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TAICANG SHUANGYI CHEMICAL ANTI
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Abstract

An efficient graphite tube array type gas absorber comprises an upper cover plate, a tube shell, a bottom shell and a lower cover plate, wherein the upper cover plate, the tube shell, the bottom shell and the lower cover plate are sequentially installed from top to bottom; an inlet is formed in the top of the upper cover plate, an injection pump is arranged above the upper cover plate, one end of the injection pump is connected with a gas inlet pipeline and an absorbent inlet pipeline respectively, and the other end of the injection pump is connected with the inlet; the shell is internally provided with a graphite tube array, the graphite tube array comprises an upper fixed tube plate, an upper absorption weir, a heat exchange tube and a lower fixed tube plate, and the upper fixed tube plate and the lower fixed tube plate are respectively and horizontally arranged at the upper part and the lower part in the shell. Efficient graphite shell and tube gas absorber, simple structure, convenient operation has improved heat exchange efficiency, has reduced and has leaded to the fracture to cause the phenomenon of leaking because of graphite pipe expansion difference, durable, efficient, application prospect is extensive.

Description

Efficient graphite shell and tube gas absorber
Technical Field
The utility model relates to a gas absorber technical field, concretely relates to efficient graphite shell and tube gas absorber.
Background
In the thirties of the last century, a great deal of hydrochloric acid is needed by the emerging chemical industry as a raw material, but most of the chemical industries can only adopt a ceramic tank which is resistant to hydrochloric acid corrosion to absorb HCl by water, and because the ceramic has poor thermal conductivity and the HCl has large solution heat, a plurality of ceramic tanks have to be adopted for series bubbling absorption, so that the heat transfer efficiency is low, the acid temperature is raised, the environmental pollution is serious, and the hydrochloric acid production can not meet the requirements of the synthetic organic industry on the hydrochloric acid production. Therefore, after a first graphite absorber is developed in 1937 in the united states, the major corrosion resistance and the higher thermal conductivity of the impermeable graphite material are utilized, and particularly, the absorber has two functions of absorption and cooling at the same time, so that the key problem of hydrochloric acid production is solved, and the absorber is known as a technical revolution of industrial production of hydrochloric acid at that time.
The graphite gas absorber is mainly a shell and tube graphite gas absorber and a round block hole graphite gas absorber. In the tube type graphite gas absorber in the prior art, graphite tubes and graphite tube plates are all bonded into a firm entity by using a bonding agent, when the air inlet temperature is high, or the thermal expansion coefficient of the graphite tubes is high, especially the error of the expansion coefficient among the tubes is slightly large, and the temperature difference among the graphite tubes is large due to the bias flow of air inlet, absorption liquid and cooling water, the bonding seam is cracked due to the expansion difference of the graphite tubes to cause leakage, even a certain graphite tube is broken, so that the heat transfer efficiency is reduced. Therefore, in order to solve the above problems, it is necessary to develop an efficient graphite tube array type gas absorber, which is durable and can improve the heat transfer efficiency inside the mass transfer, thereby improving the overall heat exchange efficiency.
Chinese patent application No. CN201821078553.9 discloses a trifluorotrichloroethane graphite absorbing device, which is to inject the mixed material into the graphite absorber through the injection pump, the material flow rate becomes fast and close to atomization, and the mixture is easier to adsorb and is not easy to block, and the expansion difference of the graphite tube of the shell and tube graphite gas absorber is not solved to cause cracking and leakage, and the heat exchange efficiency of the shell and tube graphite gas absorber is not improved.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome not enough above, the utility model aims at providing an efficient graphite shell and tube gas absorber, simple structure, compactness have improved heat exchange efficiency, have reduced because of the graphite pipe expansion difference leads to the phenomenon that the fracture caused the leakage, durable, efficient, and application prospect is extensive.
The technical scheme is as follows: an efficient graphite tube array type gas absorber comprises an upper cover plate, a tube shell, a bottom shell and a lower cover plate, wherein the upper cover plate, the tube shell, the bottom shell and the lower cover plate are sequentially installed from top to bottom; an inlet is formed in the top of the upper cover plate, an injection pump is arranged above the upper cover plate, one end of the injection pump is connected with a gas inlet pipeline and an absorbent inlet pipeline respectively, and the other end of the injection pump is connected with the inlet; a graphite tube array is arranged in the tube shell and comprises an upper fixed tube plate, an upper absorption weir, a heat exchange tube and a lower fixed tube plate, the upper fixed tube plate and the lower fixed tube plate are respectively and horizontally arranged at the upper part and the lower part in the tube shell, the upper absorption weir is vertically and fixedly arranged on the upper fixed tube plate, the heat exchange tube is vertically and fixedly arranged on the lower fixed tube plate, and the bottom of the upper absorption weir is connected with the top of the heat exchange tube; the bottom shell is internally provided with a gas-liquid separator, the left side wall of the lower part of the bottom shell is provided with a tail gas outlet, the bottom of the lower cover plate is provided with a finished product outlet, and the gas-liquid separator is respectively communicated with the tail gas outlet and the finished product outlet through pipelines.
Efficient graphite shell and tube gas absorber, simple structure, gaseous, absorbent mix in the jet pump and become for the miscella, then the injection gets into the interior graphite shell and tube of tube, the miscella velocity of flow becomes fast and is close the atomizing this moment, mixes the absorption in the graphite shell and tube more easily, also can not take place to block up easily simultaneously. The mixed fluid entering from the inlet passes through the upper absorption weir to form spiral disturbance in the tube, the liquid film descends, gas-liquid two phases carry out mass transfer reaction on the flowing liquid film, the gas is fully contacted with the absorption liquid and absorbed, the dissolved heat is subjected to heat exchange through the heat exchange tube, and the unabsorbed gas enters the gas-liquid separator in the bottom shell to provide a separation space with the absorption liquid. After separation, the gas is discharged through a tail gas outlet, and the absorption liquid is sent into a finished product liquid storage tank through a finished product outlet.
Further, in the efficient graphite tube array type gas absorber, the seal head is arranged between the upper cover plate and the tube shell and is positioned above the upper fixed tube plate.
Further, according to the efficient graphite shell and tube gas absorber, the shell ring is installed between the end socket and the upper fixing tube plate, a cavity is formed among the end socket, the shell ring and the upper fixing tube plate, the distribution disc is horizontally installed in the cavity, and a plurality of through holes are evenly distributed in the distribution disc.
By installing the seal head, the cylinder section and the distribution disc between the upper fixed tube plate and the inlet, the uniformity of the mixed fluid is improved, the subsequent absorption effect is facilitated, the direct impact of the high-temperature mixed fluid on the upper absorption weir can be reduced, and the service life of the graphite tube array is prolonged.
Further, in the efficient graphite tubular gas absorber, the jacket is arranged on the upper portion of the outer side of the tube shell, and the cooling water inlet pipe and the cooling water outlet pipe are respectively arranged on the lower side and the upper side of the upper portion of the jacket.
As the absorption process releases heat, when gas-liquid flow enters from an inlet, the temperature is higher, and even the temperature can exceed the allowable temperature (170 ℃ for phenolic impregnated graphite), therefore, the jacket is arranged at the upper part of the outer side of the pipe shell and is used for introducing cooling water, all graphite parts in the pipe shell are cooled and protected, and the service life of the graphite parts is prolonged.
Further, in the efficient graphite tubular gas absorber, the jacket is connected with the cooling circulator through the cooling water inlet pipe and the cooling water outlet pipe; the cooling circulator comprises a radiator, one end of the radiator is connected with a cooling water outlet pipe through a water pump, the radiator further comprises a plurality of radiating branches connected in parallel, and the other end of the radiator is connected with a cooling water inlet pipe.
The cooling circulator is reasonable in structure and simple in arrangement, the flow and the on-off of each radiating branch can be adjusted, the pressure drop of the cooling circulator is matched, and various cooling requirements are met.
Further, in the efficient graphite tube array type gas absorber, the upper absorption weir is a straight tube type pipe fitting with a plurality of V-shaped grooves formed in the upper end, and the inner diameter of the upper absorption weir is the same as that of the heat exchange tube; the upper absorbing weir is impregnated graphite.
The V-shaped groove structure is beneficial to enabling mixed fluid to enter along the tangential direction, a spiral liquid film is easier to form in the inner tube of the upper absorption weir to descend, and the heat exchange effect is improved.
Further, in the efficient graphite tube type gas absorber, the upper fixed tube plate, the upper absorption weir, the heat exchange tube and the lower fixed tube plate are sealed by a sealing material, and the sealing material is expanded polytetrafluoroethylene or fluororubber.
By adopting a sealing material (expanded polytetrafluoroethylene or fluororubber) for sealing, the phenomenon of leakage caused by cracking due to expansion difference of the graphite tube can be reduced.
The utility model has the advantages that:
(1) the utility model discloses an efficient graphite shell and tube gas absorber, adopt and mix gas, absorbent in the jet pump first and become the mixed fluid, then spray the mode that gets into the graphite shell and tube in the tube, the mixed fluid velocity of flow becomes fast and is close to the atomizing at this moment, mixes the absorption in the graphite shell and tube more easily, also can not take place easily simultaneously and block up;
(2) the efficient graphite tubular gas absorber provided by the utility model is provided with the end socket, the shell ring and the distribution disc between the upper fixed tube plate and the inlet, thereby improving the uniformity of the mixed fluid, being beneficial to the subsequent absorption effect, reducing the direct impact of the high-temperature mixed fluid on the upper absorption weir, and prolonging the service life of the graphite tubular gas absorber;
(3) the efficient graphite tube array type gas absorber is provided with the jacket on the upper part of the outer side of the tube shell for introducing cooling water, so that all graphite parts in the tube shell are cooled and protected, and the service life of the graphite parts is prolonged; by adopting a sealing material (expanded polytetrafluoroethylene or fluororubber) for sealing, the phenomenon of leakage caused by cracking due to expansion difference of the graphite tube can be reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the high-efficiency graphite shell and tube gas absorber according to the present invention;
FIG. 2 is a schematic view of the cooling circulator of the high-efficiency graphite shell and tube gas absorber according to the present invention;
in the figure: the device comprises an upper cover plate 1, an inlet 11, a seal head 12, a tube shell 2, a bottom shell 3, a gas-liquid separator 31, a tail gas outlet 32, a lower cover plate 4, a finished product outlet 41, an injection pump 5, a gas inlet pipeline 51, an absorbent inlet pipeline 52, a graphite tube array 6, an upper fixed tube plate 61, an upper absorption weir 62, a heat exchange tube 63, a lower fixed tube plate 64, a tube section 7, a distribution disc 8, a jacket 9, a cooling water inlet tube 91, a cooling water outlet tube 92, a cooling circulator 10, a radiator 101, a heat radiation branch 1011 and a water pump 102.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1-2 of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The high-efficiency graphite tube array type gas absorber with the structure shown in fig. 1 and 2 comprises an upper cover plate 1, a tube shell 2, a bottom shell 3 and a lower cover plate 4, wherein the upper cover plate 1, the tube shell 2, the bottom shell 3 and the lower cover plate 4 are sequentially installed from top to bottom; the top of the upper cover plate 1 is provided with an inlet 11, a jet pump 5 is arranged above the upper cover plate 1, one end of the jet pump 5 is respectively connected with a gas inlet pipeline 51 and an absorbent inlet pipeline 52, and the other end of the jet pump 5 is connected with the inlet 11; a graphite tube array 6 is arranged in the tube shell 2, the graphite tube array 6 comprises an upper fixed tube plate 61, an upper absorption weir 62, a heat exchange tube 63 and a lower fixed tube plate 64, the upper fixed tube plate 61 and the lower fixed tube plate 64 are respectively and horizontally arranged at the upper part and the lower part in the tube shell 2, the upper absorption weir 62 is vertically and fixedly arranged on the upper fixed tube plate 61, the heat exchange tube 63 is vertically and fixedly arranged on the lower fixed tube plate 64, and the bottom of the upper absorption weir 62 is connected with the top of the heat exchange tube 63; the bottom shell 3 is internally provided with a gas-liquid separator 31, the left side wall of the lower part of the bottom shell 3 is provided with a tail gas outlet 32, the bottom of the lower cover plate 4 is provided with a finished product outlet 41, and the gas-liquid separator 31 is respectively communicated with the tail gas outlet 32 and the finished product outlet 41 through pipelines.
In addition, a seal head 12 is arranged between the upper cover plate 1 and the tube shell 2, and the seal head 12 is positioned above the upper fixed tube plate 61.
In addition, a shell ring 7 is installed between the seal head 12 and the upper fixing tube plate 61, a cavity is formed among the seal head 12, the shell ring 7 and the upper fixing tube plate 61, a distribution disc 8 is horizontally installed in the cavity, and a plurality of through holes are evenly distributed in the distribution disc 8.
In addition, a jacket 9 is provided on the upper portion of the outer side of the tube shell 2, and a cooling water inlet pipe 91 and a cooling water outlet pipe 92 are provided on the lower side and the upper side of the upper portion of the jacket 9, respectively.
In addition, as shown in fig. 2, the jacket 9 is connected to the cooling circulator 10 through a cooling water inlet pipe 91 and a cooling water outlet pipe 92; the cooling circulator 10 includes a heat sink 101, one end of the heat sink 101 is connected to the cooling water outlet pipe 92 through a water pump 102, the heat sink 101 further includes a plurality of heat dissipation branches 1011 connected in parallel, and the other end of the heat sink 101 is connected to the cooling water inlet pipe 91.
Further, the upper absorption weir 52 is a straight cylindrical pipe fitting with a plurality of V-shaped grooves formed at the upper end, and the inner diameter of the upper absorption weir 52 is the same as that of the heat exchange pipe 53; the upper absorbing weir 52 is made of impregnated graphite.
Further, the upper fixed tube plate 61, the upper absorption weir 62, the heat exchange tube 63 and the lower fixed tube plate 64 are sealed by a sealing material, and the sealing material is expanded polytetrafluoroethylene or fluororubber.
Examples
Based on the above structural basis, as shown in fig. 1-2.
Efficient graphite shell and tube gas absorber, gas, absorbent mix in injection pump 5 and become for the misch metal, then spray and get into graphite shell and tube 6 in tube 2, the misch metal velocity of flow becomes fast and is close atomizing this moment, mixes the absorption in graphite shell and tube 6 more easily, also can not take place to block up easily simultaneously. The mixed fluid entering from the inlet 11 forms spiral disturbance in the tube through the upper absorption weir 62, the liquid film descends, gas-liquid two phases carry out mass transfer reaction on the flowing liquid film, the gas is fully contacted with the absorption liquid and absorbed, the dissolved heat is exchanged heat through the heat exchange tube 63, and the unabsorbed gas enters the gas-liquid separator 31 in the bottom shell 3 to provide a separation space with the absorption liquid. After separation, the gas is discharged through the tail gas outlet 32 and the absorption liquid is fed into the finished product tank through the finished product outlet 41.
Furthermore, the seal head 12, the shell ring 7 and the distribution disc 8 are arranged between the upper fixed tube plate 61 and the inlet 11, so that the uniformity of the mixed fluid is improved, the subsequent absorption effect is facilitated, the direct impact of the high-temperature mixed fluid on the upper absorption weir 62 can be reduced, and the service life of the graphite tube array 6 is prolonged.
Furthermore, due to the heat release during absorption, when the gas-liquid flow enters from the inlet, the temperature is high, even the temperature may exceed the allowable temperature of the phenolic impregnated graphite by 170 ℃, therefore, the jacket 9 is arranged at the upper part of the outer side of the tube shell 2 and is used for introducing cooling water, so that all graphite parts in the tube shell 2 are cooled and protected, and the service life of the graphite parts is prolonged.
Further, the jacket 9 is connected with the cooling circulator 10 through a cooling water inlet pipe 91 and a cooling water outlet pipe 92; the cooling circulator 10 includes a heat sink 101, one end of the heat sink 101 is connected to the cooling water outlet pipe 92 through a water pump 102, the heat sink 101 further includes a plurality of heat dissipation branches 1011 connected in parallel, and the other end of the heat sink 101 is connected to the cooling water inlet pipe 91. The cooling circulator 10 is reasonable in structure and simple in arrangement, the flow and the on-off of 1011 paths of each radiating branch can be adjusted, the pressure drop of the cooling circulator 10 is matched, and various cooling requirements are met.
Further, the upper absorption weir 52 is a straight cylindrical pipe fitting with a plurality of V-shaped grooves formed at the upper end, and the V-shaped groove structure is beneficial to enabling mixed fluid to enter along the tangential direction, so that a spiral liquid film is more easily formed in the upper absorption weir 52 to descend, and the heat exchange effect is favorably improved.
Further, the upper fixed tube plate 61, the upper absorption weir 62, the heat exchange tube 63 and the lower fixed tube plate 64 are sealed by a sealing material, and the sealing material is expanded polytetrafluoroethylene or fluororubber. By adopting the sealing material for sealing, the phenomenon of leakage caused by cracking due to expansion difference of the graphite tube can be reduced.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, the embodiments of the present invention can be arbitrarily combined with each other, and the same shall be regarded as the disclosure of the present invention as long as the idea of the present invention is not violated.

Claims (7)

1. The efficient graphite tube array type gas absorber is characterized by comprising an upper cover plate (1), a tube shell (2), a bottom shell (3) and a lower cover plate (4), wherein the upper cover plate (1), the tube shell (2), the bottom shell (3) and the lower cover plate (4) are sequentially installed from top to bottom; an inlet (11) is formed in the top of the upper cover plate (1), an injection pump (5) is arranged above the upper cover plate (1), one end of the injection pump (5) is connected with a gas inlet pipeline (51) and an absorbent inlet pipeline (52) respectively, and the other end of the injection pump (5) is connected with the inlet (11); a graphite tube array (6) is arranged in the tube shell (2), the graphite tube array (6) comprises an upper fixed tube plate (61), an upper absorption weir (62), a heat exchange tube (63) and a lower fixed tube plate (64), the upper fixed tube plate (61) and the lower fixed tube plate (64) are respectively and horizontally arranged at the upper part and the lower part in the tube shell (2), the upper absorption weir (62) is vertically and fixedly arranged on the upper fixed tube plate (61), the heat exchange tube (63) is vertically and fixedly arranged on the lower fixed tube plate (64), and the bottom of the upper absorption weir (62) is connected with the top of the heat exchange tube (63); the device is characterized in that a gas-liquid separator (31) is arranged in the bottom shell (3), a tail gas outlet (32) is formed in the left side wall of the lower portion of the bottom shell (3), a finished product outlet (41) is formed in the bottom of the lower cover plate (4), and the gas-liquid separator (31) is communicated with the tail gas outlet (32) and the finished product outlet (41) through pipelines.
2. The efficient graphite shell and tube gas absorber of claim 1, wherein a head (12) is installed between the upper cover plate (1) and the tube shell (2), and the head (12) is located above the upper fixed tube plate (61).
3. The efficient graphite shell and tube gas absorber of claim 2, wherein a shell ring (7) is installed between the end socket (12) and the upper fixed tube plate (61), a cavity is formed among the end socket (12), the shell ring (7) and the upper fixed tube plate (61), a distribution disc (8) is horizontally installed in the cavity, and a plurality of through holes are uniformly distributed in the distribution disc (8).
4. The efficient graphite shell and tube gas absorber of claim 1, wherein a jacket (9) is arranged at the upper part of the outer side of the tube shell (2), and a cooling water inlet pipe (91) and a cooling water outlet pipe (92) are respectively arranged at the lower side and the upper side of the upper part of the jacket (9).
5. The high-efficiency graphite shell and tube gas absorber as claimed in claim 4, wherein the jacket (9) is connected with the cooling circulator (10) through a cooling water inlet pipe (91) and a cooling water outlet pipe (92); the cooling circulator (10) comprises a radiator (101), one end of the radiator (101) is connected with a cooling water outlet pipe (92) through a water pump (102), the radiator (101) further comprises a plurality of heat dissipation branches (1011) connected in parallel, and the other end of the radiator (101) is connected with a cooling water inlet pipe (91).
6. The efficient graphite shell and tube gas absorber as claimed in claim 1, wherein the upper absorption weir (62) is a straight cylindrical pipe with a plurality of V-shaped grooves formed at the upper end, and the inner diameter of the upper absorption weir (62) is the same as that of the heat exchange pipe (63); the upper absorbing weir (62) is made of impregnated graphite.
7. The efficient graphite shell and tube gas absorber of claim 1, wherein the upper fixed tube plate (61), the upper absorption weir (62), the heat exchange tube (63) and the lower fixed tube plate (64) are sealed by a sealing material, and the sealing material is expanded polytetrafluoroethylene or fluororubber.
CN202020503138.4U 2020-04-09 2020-04-09 Efficient graphite shell and tube gas absorber Active CN211936349U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020503138.4U CN211936349U (en) 2020-04-09 2020-04-09 Efficient graphite shell and tube gas absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020503138.4U CN211936349U (en) 2020-04-09 2020-04-09 Efficient graphite shell and tube gas absorber

Publications (1)

Publication Number Publication Date
CN211936349U true CN211936349U (en) 2020-11-17

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CN202020503138.4U Active CN211936349U (en) 2020-04-09 2020-04-09 Efficient graphite shell and tube gas absorber

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