CN219111335U - Device for mixing gas by utilizing difference of molecular weight of gas - Google Patents
Device for mixing gas by utilizing difference of molecular weight of gas Download PDFInfo
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- CN219111335U CN219111335U CN202320110182.2U CN202320110182U CN219111335U CN 219111335 U CN219111335 U CN 219111335U CN 202320110182 U CN202320110182 U CN 202320110182U CN 219111335 U CN219111335 U CN 219111335U
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Abstract
The utility model relates to the technical field of gas mixing devices, in particular to a device for mixing gases by utilizing difference of molecular weight of gases. The utility model comprises a preliminary mixing cavity, wherein the side wall of the preliminary mixing cavity is provided with at least two first air inlet holes with different heights, and the preliminary mixing cavity is provided with a first air outlet hole; in two adjacent first inlet ports, the high-position first inlet port lets in the heavy sinking of gas molecular weight gas, and the low-position first inlet port lets in the heavy sinking of gas molecular weight gas, can make the heavy sinking of gas molecular weight like this, and the heavy gas of gas molecular weight comes up, and then carries out and realizes preliminary mixing in preliminary mixing chamber. Compared with the prior art, which adopts the mode of increasing the volume of the mixing cavity and prolonging the residence time of the gas, the utility model has the characteristics of simple structure, high mixing efficiency and novel mixing principle.
Description
Technical Field
The utility model relates to the technical field of gas mixing devices, in particular to a device for mixing gases by utilizing difference of molecular weight of gases.
Background
In the face of global warming trends, it is becoming increasingly important to gradually reduce the greenhouse gas carbon dioxide emitted by industry. CO as a greenhouse gas 2 Recovered and combined with H 2 The chemical raw material methanol is produced, the effect of reducing the emission of the greenhouse can be achieved, the aim of changing waste into valuables is achieved, and the process technology is very in line with the national policy of carbon neutralization and carbon emission reduction.
The content of CO is more than 98 percent 2 Gas and H-rich content of more than 70% 2 The gas mixing synthesis of methanol first needs to make the content of synthetic methanol higher than 98% CO 2 Gas and H-rich content of more than 70% 2 The gases are thoroughly mixed and precisely proportioned, and a gas mixing device is required for this process.
There are many gas mixing devices in the prior art, but these also have room for improvement. For example, in the patent application publication CN1712561a, a gas mixing device is disclosed, where the gas mixing device includes a first gas mixing cavity and a second gas mixing cavity, where the first gas mixing cavity may be a U-shaped cavity or a square cavity, and the second gas mixing cavity is a spiral cavity, and multiple gases are uniformly mixed in a larger cavity in a proper time through the first gas mixing cavity, and then, through an elongated curved cavity of the second gas mixing cavity, a gas flow is increased, so that a collision opportunity of the gases is increased, and further, the multiple gases are uniformly mixed. The gas mixing device can achieve the purpose of uniformly mixing the gases, but has a complex structure, the first gas mixing cavity and the second gas mixing cavity are separately arranged and are not arranged into an integrated structure, and the first gas mixing cavity and the second gas mixing cavity are in airtight connection in a pipeline, a sealing ring and the like. The gas mixing device requires that the cavity of the first gas mixing cavity is large, and the gas stays in the first gas mixing cavity for a proper time so as to ensure that the gas is uniformly mixed, thus increasing the volume of the gas mixing device and reducing the efficiency of gas mixing. The gas mixing device cannot accurately adjust the gas mixing proportion, and after the gas mixing device is completed, the gas mixing device is not provided with a gas detection and analysis device, a control system and other devices, and when the gas mixing is completed, the gas content and the gas mixing proportion cannot be detected, and the feedback to the front valve, the automatic control and the real-time adjustment cannot be realized.
For example, in the patent application publication CN211246127U, a gas mixing device is also disclosed, which is compared with the above-mentioned patent, in that a first mixing chamber is not provided, different gas directly enters the mixer through a valve interface, and a spiral strip is provided in the mixer, which is similar to the spiral second gas mixing chamber in the above-mentioned utility model. The patent does not provide a first mixing chamber, the uniformity of the gas mixture is not uniform to a certain extent, the mixing chamber is not suitable for mixing carbon dioxide and hydrogen in the process of preparing methanol, and the conditions of uneven gas mixture and unstable operation of a methanol synthesis compressor exist. The patent also has the same problems as the patent of the utility model, and after the gas mixing is finished and flows out of the mixer, the rear end of the mixer is not provided with a gas detection and analysis device, a control system and other devices, and when the gas mixing is finished, the gas content and the gas proportion cannot be detected, feedback cannot be formed to the first valve and the second valve in front, and the automatic control and the real-time adjustment can be realized. The patent also has the problems of complex structure, scattered parts and insufficient integration.
In summary, the conventional gas mixing device has the following problems:
1. the uneven mixing easily causes unstable operation of the methanol synthesis compressor;
2. none of the existing gas mixing devices take into account the influence of the molecular weight of the gas on the gas mixing;
3. the existing gas mixing device has the problems that the mixing proportion cannot be accurately adjusted, the air inlet valve cannot be adjusted in real time according to the air outlet analysis, and the methanol synthesis conversion rate is low;
4. the existing gas mixing device is complex in structure.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides a device capable of mixing gases by utilizing the difference of molecular weight of the gases. The utility model is realized in the following way:
the utility model provides a device for mixing gas by utilizing the difference of molecular weight of gas, which comprises a preliminary mixing cavity, wherein the side wall of the preliminary mixing cavity is provided with at least two first air inlets with different heights, and the preliminary mixing cavity is also provided with a first air outlet; in the two adjacent first air inlets, the molecular weight of the gas introduced into the first air inlet at the high position is larger than that of the gas introduced into the first air inlet at the low position.
Further is: the device also comprises a baffling mixing cavity, wherein a baffling channel is arranged in the baffling mixing cavity, a second air inlet hole and a second air outlet hole are arranged on the side wall of the baffling mixing cavity, and the second air inlet hole of the baffling mixing cavity is communicated with the first air outlet hole of the primary mixing cavity.
Further is: the device also comprises a gas mixing tank, wherein a tank body partition plate is arranged in the gas mixing tank and divides the tank body into two cavities, one side of the tank body partition plate and the inner wall of the gas mixing tank form a primary mixing cavity, and the other side of the tank body partition plate and the inner wall of the gas mixing tank form a baffling mixing cavity; the first air outlet hole is arranged on the tank body division plate.
Further is: the inner side of each first air inlet hole is connected with a gas distributor.
Further is: the first air outlet hole is positioned at the middle position of the side wall of the preliminary mixing cavity in the height direction.
Further is: a baffle plate is arranged in the baffle mixing cavity, and a baffle channel is formed between the baffle plate and the inner wall of the baffle mixing cavity.
Further is: a baffle plate is arranged in the baffle mixing cavity, the baffle plate is vertically arranged, and a gas flow hole is arranged between the baffle plate and the top inner wall and/or the bottom inner wall of the baffle mixing cavity.
Further is: at least two baffle plates are arranged in the baffle mixing cavity, and the baffle plates are vertically arranged and are arranged along the airflow direction; in two adjacent baffle plates, a gas flow hole is arranged between one baffle plate and the top inner wall of the baffle mixing cavity, and a gas flow hole is arranged between the other baffle plate and the bottom inner wall of the baffle mixing cavity.
Further is: an air inlet pipeline is connected to the air inlet hole, and an air outlet pipeline is connected to the second air outlet hole; an air inlet pipeline is provided with a regulating valve; and the gas outlet pipeline is also provided with gas rapid analysis equipment.
Further is: the gas rapid analysis device further comprises a control system, wherein the regulating valve is an electric regulating valve, and the gas rapid analysis device and the electric regulating valve are electrically connected with the control system.
The beneficial effects of the utility model are as follows: the utility model provides a device for mixing gas by utilizing a gas molecular weight difference, which comprises a preliminary mixing cavity, wherein the side wall of the preliminary mixing cavity is provided with at least two first air inlet holes with different heights, and the first air inlet holes are used for air intake; a first air outlet hole is formed in the middle of the primary mixing cavity in the height direction and is used for flowing out of gas; in the two adjacent first air inlets, the first air inlet at a high position is filled with gas with large molecular weight, and the first air inlet at a low position is filled with gas with small molecular weight. The gas with larger molecular weight and sinking is introduced into the first air inlet hole at the upper part, the gas with smaller molecular weight and floating is introduced into the first air inlet hole at the lower part, so that the gas with larger molecular weight and smaller molecular weight can sink, the gas floats upwards, and the aim of preliminary mixing of the gas is realized in the preliminary mixing cavity. Compared with the prior art, which adopts the mode of increasing the volume of the mixing cavity and prolonging the residence time of the gas, the utility model has the characteristics of simple structure, high mixing efficiency and novel mixing principle.
The novel device is further provided with a baffling mixing cavity, a baffling channel is arranged in the baffling mixing cavity, and the baffling channel can prolong the movement path of gas and prolong the mixing time of the gas; after the primary mixing chamber is used for primary mixing and flowing out, the mixture enters the baffling mixing chamber, so that the aim of uniformly mixing various gases can be fulfilled.
This novel further mixing chamber that will preliminary and baffling of use all set up in gas mixing jar, and first venthole sets up on jar body division board to communicate preliminary mixing chamber and baffling mixing chamber, adopt first venthole intercommunication between two cavitys, spare part is few, and whole device appearance is unified, simple structure.
Drawings
FIG. 1 is a schematic diagram of an apparatus for mixing gases using differences in molecular weight of the gases;
FIG. 2 is a top view of the gas mixing tank with gas baffling back and forth.
Marked in the figure as: 1-gas mixing tank, 101-preliminary mixing chamber, baffling mixing chamber 102,2-first air outlet hole, 3-first air inlet hole, 4-baffle plate, 5-gas distributor, 6-air inlet pipeline, 7-air outlet pipeline, 8-regulating valve, gas rapid analysis equipment, 10-second air outlet hole, 11-tank body partition plate and 12-gas flow hole
Detailed Description
The following description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings, so as to further understand the concept of the present utility model, the technical problems to be solved, the technical features constituting the technical solutions, and the technical effects to be brought about. However, the description of these embodiments is illustrative, and does not constitute a specific limitation on the present utility model.
The present utility model provides an apparatus for mixing two or more gases, including but not limited to CO having a mixing content of greater than 98%, using a difference in molecular weight of the gases 2 Gas and H-rich with content more than 70% 2 And (3) mixing the gases.
The utility model comprises a primary mixing cavity 101, wherein the side wall of the primary mixing cavity 101 is provided with at least two first air inlets 3 with different heights, and the first air inlets 3 are used for introducing gas; the primary mixing cavity 101 is also provided with a first air outlet hole 2, and the first air outlet hole 2 is used for outflow of gas; in the two adjacent first air inlet holes 3, the molecular weight of the gas introduced into the first air inlet hole 3 at the high position is larger than that of the gas introduced into the first air inlet hole 3 at the low position.
The preliminary mixing chamber 101 is for accommodating the gas and performing preliminary mixing of the gas therein, and its material, structure, shape, etc. are various and not limited in the present utility model; it may be stainless steel cylinders, plastic tanks, etc.; the shape may be cylindrical, rectangular parallelepiped, etc. In the present utility model, the side wall of the preliminary mixing chamber 101 is provided with at least two first air inlets 3, and the first air inlets 3 are provided in the present utility model, and it should be understood by those skilled in the art that the gas with different components has different molecular weights, which results in the gas having the characteristics of floating or sinking, and the present utility model uses the characteristics of floating or sinking of the gas to provide the first air inlets 3; after the first air inlets 3 are arranged at different heights, the gas with larger molecular weight and sinking is introduced into the upper first air inlets 3, the gas with smaller molecular weight and sinking is introduced into the lower first air inlets 3, the gas with larger molecular weight and sinking is moved upwards, the preliminary mixing of the gas is realized in the preliminary mixing cavity, and then the gas after preliminary mixing flows out from the first air outlets 2. In the utility model, devices such as pall rings or raschig rings and the like can be arranged in the primary mixing cavity 101 to improve the gas distribution condition, so that the gas is uniformly distributed, and the primary mixing effect is enhanced.
In the present utility model, the specific position of the first air outlet 2 on the preliminary mixing chamber 101 is not limited, and may be disposed at an upper position, a middle position or a lower position of a side wall of the preliminary mixing chamber 101, and may be disposed at a top wall or a bottom wall of the preliminary mixing chamber 101. The gas with larger molecular weight sinks, the gas with smaller molecular weight moves upwards, and in the process of moving the gas molecules, the gas molecules are mutually staggered, and the gas in the whole primary mixing cavity 101 is primarily mixed; thus, the specific positions of the first gas outlet holes 2 are varied. However, the position where the preliminary mixing of the gas is optimal is the position in the middle of the side wall of the preliminary mixing chamber 101 in the height direction, and it is preferable that the first gas outlet holes 2 are located in the position in the middle of the side wall of the preliminary mixing chamber 101 in the height direction.
The preliminary mixing chamber 101 can realize preliminary mixing of gas, and in order to realize uniform mixing of gas, the device for mixing gas by utilizing difference of molecular weight of gas further comprises a baffling mixing chamber 102, a baffling channel is arranged in the baffling mixing chamber 102, a second air inlet hole and a second air outlet hole 10 are arranged on the side wall of the baffling mixing chamber 102, and the second air inlet hole of the baffling mixing chamber 102 is communicated with the first air outlet hole 2 of the preliminary mixing chamber 101. The gas flowing out of the first gas outlet hole 2 enters the baffling mixing cavity 2 through the second gas inlet hole, the baffling channel in the baffling mixing cavity 102 can prolong the movement path and mixing time of the gas, increase the probability of collision of the gas, and achieve the aim of uniformly mixing a plurality of gases under the combined action of the primary mixing cavity 101 and the baffling mixing cavity 102. The material, structure, shape, etc. of the baffle mixing chamber 102 are also various, and the baffle mixing chamber is not limited in the present utility model, and may be a stainless steel cylinder, a plastic tank, etc.; the shape may be cylindrical, rectangular parallelepiped, etc. The structure of the baffle channel is also various, and the baffle channel can be a straight channel or an arc channel, and the arc channel can be a spiral channel, so that the specific structure and the style of the baffle channel are not limited in the utility model.
The preliminary mixing chamber 101 and the baffle mixing chamber 102 may be chambers respectively provided on two separate tanks, and the specific structures of both are not limited in the present utility model. In order to simplify the structure, the primary mixing chamber 101 and the baffling mixing chamber 102 of the utility model are arranged in one gas mixing tank 1, a tank body division plate 11 is arranged in the gas mixing tank 1, and the chambers are divided by the tank body division plate 11. The tank partition plate 11 is provided for dividing the tank, and the number and shape of the tank are not limited, and the tank partition plate may be a flat plate arranged in the middle of the tank, or may be formed by jointly splicing a plurality of plates as shown in fig. 1, so long as the tank partition plate can play a role of dividing the tank. After the tank body partition plate 11 is arranged, the first air outlet hole 2 is arranged on the tank body partition plate 11, after the arrangement, the primary mixing cavity 101 is communicated with the baffling mixing cavity 102, and after the air flows out of the primary mixing cavity 101, the air directly enters the baffling mixing cavity 102. Compared with the structure that the primary mixing cavity 101 and the baffling mixing cavity 102 are arranged on two independent tanks, the arrangement of structures such as a communicating pipe, sealant and the like can be omitted, parts are few, the whole device is uniform in appearance, the structure is simple, and the device is a better implementation mode.
The gas is introduced into the preliminary mixing cavity 101 through a pipeline and the like for preliminary mixing, so that the introduced gas is uniformly distributed in the preliminary mixing cavity 101, the effect of preliminary mixing is enhanced, and the inner side of each first air inlet hole 3 is connected with a gas distributor 5. It will be appreciated by those skilled in the art that the gas distributor 5 is provided with a plurality of gas outlet holes, and the gas outlet holes are uniformly arranged optimally. The number and size of the gas outlet holes on the gas distributor 5 are not limited in the present utility model, and a user may perform an adaptive design according to various factors such as the kind of the mixed gas and the size of the preliminary mixing chamber 101. In the present utility model, it is preferable that the gas distributor 5 corresponding to the upper first gas outlet 3 has its gas outlet facing downward, and the gas distributor 5 corresponding to the lower first gas outlet 3 has its gas outlet facing upward, so that the gas with larger molecular weight and sinking can be injected downward after being introduced into the distributor 5, and the gas with smaller molecular weight and floating upward after being introduced into the distributor 5 can be injected upward, thereby accelerating the gas mixing rate.
In the present utility model, the baffle plate 4 is disposed in the baffle mixing chamber 102, and a baffle channel is formed between the baffle plate 4 and the inner wall of the baffle mixing chamber 102, and the manner of the baffle channel formed between the baffle plate 4 and the inner wall of the mixing chamber 102 is various, for example, a channel for making gas baffle up and down, that is, making gas baffle in the baffle mixing chamber 102 according to the modes of up, down, up and down … …. For example, the gas may also be deflected back and forth, i.e., in a horizontal direction in a front, back, front, back … … fashion within the deflection mixing chamber 102. Of course, in the utility model, the baffle channel is not limited to be built by adopting the baffle plate 4, and the baffle channel is built by adopting the baffle plate 4, so that the method is simpler, easy to implement and cost-saving, and is a preferable mode. It is also possible to deflect the gas in a helical deflection path, as mentioned above, by providing an elongated spiral tube directly in the deflection mixing chamber 102, and introducing the gas into the elongated spiral tube to accomplish helical deflection.
In the above description, it is mentioned that the gas may be deflected up and down or back and forth by the arrangement of the baffle plate 4, and in order to deflect the gas up and down, the present utility model exemplifies two embodiments. The first way is: a baffle plate 4 is arranged in the baffle mixing cavity 102, the baffle plate 4 is vertically arranged, and a gas flow hole 12 is arranged between the baffle plate 4 and the top inner wall and/or the bottom inner wall of the baffle mixing cavity. The second mode is as follows: at least two baffle plates 4 are arranged in the baffle mixing cavity 102, and the baffle plates 4 are vertically arranged and are arranged along the airflow direction; among the two adjacent baffle plates 4, a gas flow hole 12 is arranged between one baffle plate 4 and the top inner wall of the baffle mixing cavity 102, and a gas flow hole 12 is arranged between the other baffle plate 4 and the bottom inner wall of the baffle mixing cavity 102. The baffle plate 4 or the baffle plates 4 can extend the movement path and the mixing time, and compared with the baffle plate 4, the baffle plate 4 has longer movement path and is beneficial to uniformly mixing the gases. When only one baffle plate 4 is arranged in the baffle mixing cavity 102, a gas flow hole 12 is arranged between the baffle plate 4 and the top inner wall or the bottom inner wall of the baffle mixing cavity 102, or a gas flow hole 12 is arranged between the baffle plate 4 and the top inner wall and the bottom inner wall of the baffle mixing cavity 102, and the three structures can achieve the purpose of making the gas flow up and down. However, if the baffle plates 4 are arranged, in two adjacent baffle plates 4, a gas flow hole 12 is arranged between one baffle plate 4 and the top inner wall of the baffle mixing cavity 102, and a gas flow hole 12 is arranged between the other baffle plate and the bottom inner wall of the baffle mixing cavity 102; this allows the gas to rise and fall back and forth within the baffled mixing chamber 102. As shown in fig. 1, only one baffle plate 4 is disposed in the baffle mixing chamber 102, and a gas flow hole 12 is disposed between the baffle plate 4 and the bottom inner wall of the baffle mixing chamber 102, so that the gas flowing out of the primary mixing chamber 101 flows downward, upward and finally flows out of the second gas outlet hole 10.
In order to deflect the gas back and forth, the present utility model also exemplifies two embodiments, and it should be noted that the aforementioned back and forth deflection means that the gas flows back and forth in a plan view of the deflection mixing chamber 102, as shown in fig. 2. The first way is: a baffle plate 4 is arranged in the baffle mixing cavity 102, the baffle plate 4 is vertically arranged, and a gas flow hole 12 is arranged between the baffle plate 4 and the single-side inner wall or the double-side inner wall of the baffle mixing cavity 102. The second mode is as follows: as shown in fig. 2, at least two baffles 4 are disposed in the baffle mixing chamber 102, the baffles 4 are vertically disposed and are arranged along the airflow direction, and in the two adjacent baffles 4, a gas flow hole 12 is disposed between one baffle 4 and one inner wall of the baffle mixing chamber 102, and a gas flow hole 12 is disposed between the other baffle and the other inner wall of the baffle mixing chamber 102.
In the above, the way of deflecting the gas up and down is better than the way of deflecting the gas back and forth in the horizontal direction, because the object used by the utility model is the mixing of the gases with larger molecular weight difference, the gases with larger molecular weight sink, the gases with smaller molecular weight float upwards, and the layering of the gases in the deflecting cavity can be caused by the front and back deflecting in the horizontal direction, so that the uneven mixing of the gases is caused; the gas is deflected up and down, so that the sinking high molecular weight gas or the floating low molecular weight gas can synchronously move upwards or downwards, and the layering phenomenon can be avoided.
As a gas mixing device, in order to mix gas and facilitate gas introduction, the present utility model has a gas inlet pipe 6 connected to a first gas inlet hole 3, a gas outlet pipe 7 connected to a second gas outlet hole 10, and a regulating valve 8 provided to the gas inlet pipe 6. The regulating valve 8 can be used for conveniently controlling different gas inlet rates and inlet proportions, and the regulating valve 8 can be a manual regulating valve or an electromagnetic regulating valve or other mechanical regulating valves. Further, in order to facilitate judging whether the mixed gas meets the requirement, a gas rapid analysis device 9 is arranged on the gas outlet pipeline 7, and the gas rapid analysis device 9 can rapidly analyze the content of each gas.
In order to realize accurate adjustment of the gas mixing proportion, the utility model also comprises a control system, wherein the adjusting valve 8 is an electric adjusting valve, such as an electromagnetic adjusting valve, and the gas rapid analysis device 9 and the electric adjusting valve are electrically connected with the control system. After the arrangement, the content of each gas can be rapidly analyzed in real time through the gas rapid analysis equipment 9, and then content signals are transmitted to a control system; if the gas mixing proportion does not meet the requirement, the control system receives the signals and then makes instructions for adjusting each electric adjusting valve, so that the air inlet flow of each first air inlet hole 3 is adjusted, and the requirement for accurately adjusting the gas mixing proportion is met.
In summary, the utility model considers the influence of the molecular weight of the gas on the gas mixing in the structural arrangement of the gas mixing device, which belongs to a great innovation; the baffling mixing cavity 102 is arranged on the basis of the primary mixing cavity 101, so that the purpose of uniformly mixing the gases can be achieved; the primary mixing cavity 101 and the baffling mixing cavity 102 are arranged on the gas mixing tank 1, so that the structure of the device is simplified, the appearance of the device is uniform, and the structure is simplified; finally, the device can rapidly analyze the content of each gas flowing out through the control system, the gas rapid analysis equipment 9, the electric regulating valve and the like, and form feedback to the electric regulating valve according to the content result, and the electric regulating valve adapts to regulation according to the feedback, so that the aim of accurately regulating the gas mixing proportion is fulfilled.
The mechanism of the methanol synthesis reaction is described as follows: regulation H 2 And CO 2 The gas quantity is supplemented into a synthesis gas compressor according to the molar ratio of 3:1, and the compression of the supplemented synthesis gas is regulated to the reaction pressure of 7.0-9.0MPag required by regulation. Into a methanol synthesis reactor, CO 2 And H 2 Is reacted at elevated temperature and pressure in the presence of a highly selective heterogeneous catalyst to produce a mixture having a crude methanol content of from 60 to 65% and a water content of from 35 to 40%. In the methanol synthesis reactor, the following reactions occur under the action of a methanol catalyst: the main reaction: CO 2 +3H 2 →CH 3 OH+H 2 O; side reaction: CO 2 +3H 2 ←→CO+H 2 O. The single-pass conversion rate of the synthesis reaches more than 45 percent, and the total conversion rate reaches more than 95 percent.
The following describes the utility model for mixing H 2 And CO 2 Firstly, CO with the pressure of 2.0-2.5MPa and the content of more than 98 percent is processed 2 The gas is regulated by a regulating valve 8, and the CO with the flow rate regulated is regulated 2 Flows into the preliminary stage through the gas distributor 5The upper part of the mixing chamber 101; h2-enriched gas with the content of 2.0-2.5MPa being more than 70% is regulated by a regulating valve 8, and the flow rate of the H-enriched gas is regulated 2 The gas flows into the lower part of the primary mixing chamber 101 through the gas distributor 5; then the gas flows out from the first gas outlet hole 2, enters the baffling mixing cavity 102 and flows out from the second gas outlet hole 10 at most; the gas rapid analysis device 9 rapidly analyzes the content of each gas and then transmits a content signal to a control system; if the gas mixing proportion does not meet the requirement of synthesizing methanol, the control system receives the signals and then makes instructions for adjusting each adjusting valve 8, so that the gas mixing proportion is accurately adjusted, and the methanol synthesizing requirement is met. After the device for mixing gas by utilizing the difference of molecular weights of the gas provided by the utility model is used, H can be realized 2 And CO 2 The mixture is fully and uniformly mixed, and the condition that the methanol synthesis compressor is not operated stably and the conversion rate of the methanol synthesis reaction is low due to inaccurate gas mixing proportion is avoided.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; while the utility model has been described in detail with reference to the foregoing embodiments, it will be appreciated by those skilled in the art that variations may be made in the techniques described in the foregoing embodiments, or equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. Device of utilizing gas molecular weight difference mixture gas, its characterized in that: the device comprises a preliminary mixing cavity (101), wherein the side wall of the preliminary mixing cavity (101) is provided with at least two first air inlet holes (3) with different heights, and the preliminary mixing cavity (101) is also provided with a first air outlet hole (2); in the two adjacent first air inlets (3), the gas molecular weight of the gas introduced into the first air inlet (3) at a high position is larger than that of the gas introduced into the first air inlet (3) at a low position.
2. The apparatus for mixing gases using a difference in molecular weight of gases according to claim 1, wherein: the device further comprises a baffling mixing cavity (102), a baffling channel is arranged in the baffling mixing cavity (102), a second air inlet hole and a second air outlet hole (10) are arranged on the side wall of the baffling mixing cavity (102), and the second air inlet hole of the baffling mixing cavity (102) is communicated with the first air outlet hole (2) of the primary mixing cavity (101).
3. The apparatus for mixing gases using a difference in molecular weight of gases according to claim 2, wherein: the gas mixing device comprises a gas mixing tank (1), wherein a tank body partition plate (11) is arranged in the gas mixing tank (1), the tank body partition plate (11) divides the tank body into two cavities, one side of the tank body partition plate (11) and the inner wall of the gas mixing tank (1) form a primary mixing cavity (101), and the other side of the tank body partition plate (11) and the inner wall of the gas mixing tank (1) form a baffling mixing cavity (102); the first air outlet hole (2) is arranged on the tank body partition plate (11).
4. A device for mixing gases by means of a gas molecular weight difference according to any one of claims 1 to 3, characterized in that: the inner side of each first air inlet hole (3) is connected with a gas distributor (5).
5. A device for mixing gases by means of a gas molecular weight difference according to any one of claims 1 to 3, characterized in that: the first air outlet hole (2) is positioned at the middle part of the side wall of the primary mixing cavity (101) in the height direction.
6. A device for mixing gases by means of a gas molecular weight difference according to any one of claims 2 to 3, characterized in that: a baffle plate (4) is arranged in the baffle mixing cavity (102), and a baffle channel is formed between the baffle plate (4) and the inner wall of the baffle mixing cavity (102).
7. The apparatus for mixing gases using a difference in molecular weight of gases according to claim 5, wherein: a baffle plate (4) is arranged in the baffle mixing cavity (102), the baffle plate (4) is vertically arranged, and a gas flow hole (12) is arranged between the baffle plate (4) and the top inner wall and/or the bottom inner wall of the baffle mixing cavity (102).
8. The apparatus for mixing gases using a difference in molecular weight of gases according to claim 5, wherein: at least two baffle plates (4) are arranged in the baffle mixing cavity (102), and the baffle plates (4) are vertically arranged and are arranged along the airflow direction; among the two adjacent baffle plates (4), a gas flow hole (12) is arranged between one baffle plate (4) and the top inner wall of the baffle mixing cavity (102), and a gas flow hole (12) is arranged between the other baffle plate and the bottom inner wall of the baffle mixing cavity (102).
9. A device for mixing gases by means of a gas molecular weight difference according to any one of claims 2 to 3, characterized in that: an air inlet pipeline (6) is connected to the air inlet hole (3), and an air outlet pipeline (7) is connected to the second air outlet hole (10); an air inlet pipeline (6) is provided with an adjusting valve (8); the gas outlet pipeline (7) is also provided with a gas rapid analysis device (9).
10. The apparatus for mixing gases using a difference in molecular weight of gases as set forth in claim 9, wherein: the gas rapid analysis device further comprises a control system, wherein the regulating valve (8) is an electric regulating valve, and the gas rapid analysis device (9) and the electric regulating valve are electrically connected with the control system.
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| CN118079687A (en) * | 2024-04-28 | 2024-05-28 | 合肥先微半导体材料有限公司 | Air supplementing device for fluorocarbon gas mixing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118079687A (en) * | 2024-04-28 | 2024-05-28 | 合肥先微半导体材料有限公司 | Air supplementing device for fluorocarbon gas mixing |
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