Jet device capable of adjusting gas-liquid contact mode
[ Field of technology ]
The invention relates to the technical field of air injection devices, in particular to the technical field of air injection devices capable of adjusting a gas-liquid contact mode.
[ Background Art ]
The p-methylsulfonylmethyl benzene is the main raw material for producing the p-methylsulfonylbenzene silk ethyl ester, and the p-methylsulfonylbenzene silk ethyl ester is the main raw material for synthesizing the second class of new drugs of the Buddha profen and the thiamphenicol in China, so that the market demand is high. The conversion rate of the p-methylsulfonyl toluene is improved, so that the consumption of raw materials can be effectively reduced, and the market competitiveness of the p-methylsulfonyl toluene is improved. In the production process of the methylsulfonyl toluene, the gas-liquid contact mode of methane chloride introduced into the reducing solution is changed, so that the conversion rate of the methylsulfonyl toluene is different. However, the conventional gas jet apparatus can only change the gas jet speed, and has limited capability of adjusting the form of the jet bubbles, and cannot better adjust the gas-liquid contact mode between the raw materials.
[ Invention ]
The invention aims to solve the problems in the prior art, and provides an air injection device capable of adjusting a gas injection speed and the size of generated bubbles, so that an optimal gas-liquid contact mode is found out, and the conversion rate of p-methylsulfonyl toluene is effectively improved.
In order to achieve the above purpose, the invention provides an air injection device capable of adjusting a gas-liquid contact mode, which comprises an air tank, an air injection disc, a pump and an air pipe, wherein the pump is respectively connected with the air tank and the air injection disc through the air pipe, a plurality of spray heads are arranged on the air injection disc, each spray head comprises an outer shell, an air plate, a driving assembly and a motor, a plurality of air plates are respectively arranged in the outer shell from top to bottom, a plurality of openings are formed in the air plates around an axle center, a separation net is arranged on part of the openings, and the motor respectively drives the air plates to rotate through the driving assembly so that one of the openings on the air plates is aligned with an air passage in the outer shell.
Preferably, the air injection disc comprises a circular pipe, branch pipes, a middle pipe and spray heads, wherein the middle pipe is positioned in the circular pipe, the circle center of the circular pipe is positioned on the central axis of the middle pipe, two ends of the branch pipes are respectively communicated with the circular pipe and the middle pipe, the spray heads are respectively fixed on the circular pipe, and the middle pipe is connected with one end of the air pipe.
Preferably, the air passage is provided with a necking, and the necking is positioned on one side of the air passage, which is close to the annular pipe.
Preferably, the mesh density of the spacer mesh is different on different openings.
Preferably, the driving assembly comprises a gear and a belt, the outer edge of the air plate is provided with teeth, the gear is rotationally fixed in the outer shell and is engaged with the air plate, and the belt is respectively sleeved on the rotating shaft of the gear and the output shaft of the motor.
Preferably, the number of the spray heads is 3-9.
Preferably, a flowmeter is mounted on the air pipe.
The invention has the advantages that the pump speed of the gas is regulated by the pump, the motor is utilized to drive different gas plates to rotate respectively by the driving component, the specified opening of the gas plate can be aligned to the air passage according to the requirement, so that the size of bubbles is controlled by superposition of the separation net, the optimal gas-liquid contact mode is found, the conversion rate of the p-methylsulfonyl toluene is effectively improved, the consumption of main raw materials is reduced, the production cost is saved, the market competitiveness of the product is improved, the discharge amount of the gas is detected by the flowmeter, the use of a producer is facilitated, and the gas can conveniently penetrate out of the separation net of a plurality of layers by arranging the necking in the air passage.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ Description of the drawings ]
FIG. 1 is a front view of an adjustable gas-liquid contact jet apparatus of the present invention in operation;
FIG. 2 is a top view of a jet tray of a jet device with adjustable gas-liquid contact mode according to the present invention;
FIG. 3 is a front view of a jet tray of a jet device with adjustable gas-liquid contact mode according to the present invention;
FIG. 4 is a front cross-sectional view of a gas panel of a gas injection apparatus with adjustable gas-liquid contact according to the present invention;
fig. 5 is a top view of a gas plate of a gas injection device with adjustable gas-liquid contact mode according to the present invention.
In the figure, 1-gas tank, 2-jet disk, 21-ring pipe, 22-branch pipe, 23-middle pipe, 24-nozzle, 241-outer shell, 2411-air channel, 2412-necking, 242-air plate, 2421-opening, 2422-screen, 2423-tooth, 243-gear, 244-belt, 245-motor, 3-pump, 4-flowmeter, 5-air pipe and 6-reaction kettle.
[ Detailed description ] of the invention
Referring to fig. 1 to 5, the air injection device with adjustable gas-liquid contact mode of the present invention comprises an air tank 1, an air injection disk 2, a pump 3 and an air pipe 5, wherein the pump 3 is respectively connected with the air tank 1 and the air injection disk 2 through the air pipe 5, a plurality of spray heads 24 are arranged on the air injection disk 2, the spray heads 24 comprise an outer shell 241, an air plate 242, a driving component and a motor 245, the plurality of air plates 242 are respectively arranged in the outer shell 241 from top to bottom, a plurality of openings 2421 are arranged on the air plate 242 around the axle center, a partition 2422 is arranged on a part of the openings 2421, the motor 245 respectively drives the air plate 242 to rotate through the driving component so that one of the openings 2421 on the air plate 242 is aligned with the air passage 2411 in the outer shell 241, the air injection disk 2 comprises a ring pipe 21, a branch pipe 22, a middle pipe 23 and a spray head 24, the middle pipe 23 is positioned in the ring pipe 21, the center of the ring pipe 21 is positioned on the central axis of the middle pipe 23, two ends of a plurality of branch pipes 22 are respectively communicated with the ring pipe 21 and the middle pipe 23, a plurality of spray heads 24 are respectively fixed on the ring pipe 21, the middle pipe 23 is connected with one end of the air pipe 5, the air passage 2411 is provided with a necking 2412, the necking 2412 is positioned on one side of the air passage 2411 close to the ring pipe 21, the mesh densities of the screens 2422 on the openings 2421 are different, the driving assembly comprises gears 243 and belts 244, teeth 2423 are arranged on the outer edge of the air plate 242, the gears 243 are rotationally fixed in the outer shell 241 and meshed with the air plate 242, the belts 244 are respectively sleeved on the rotating shafts of the gears 243 and the output shafts of the motors 245, the number of the spray heads 24 is 3-9, and the flowmeter 4 is arranged on the air pipe 5.
The working process of the invention comprises the following steps:
First, the pump 3 is turned on, and methane chloride in the gas tank 1 is injected into the reducing solution in the reaction kettle 6 along the gas pipe 5 through the gas injection disk 2. When the gas jet speed is low, the gas is jetted in the form of individual bubbles, and bubble contact is formed. As the jet velocity gradually increases, the amount of gas passing through the liquid layer per unit time increases, and the gas-liquid contact mode is changed from bubbling contact to honeycomb contact. When the jet velocity further increases, the diameter of the bubbles passing through the liquid layer becomes smaller, and a foam contact form is formed. The motor 245 may then be used to rotate the air plate 242 via the belt 244 and gear 243 to align the various openings 2421 with the air passages 2411 as desired. Wherein, the more the layer number of the partition 2422 is overlapped in the air passage 2411, or the larger the mesh density of the partition 2422 itself, the smaller and denser the bubbles formed by spraying the methane chloride into the reducing solution.
The invention adjusts the pumping speed of gas through the pump, utilizes the motor to drive different gas plates to rotate through the driving component, can aim at the air passage according to the appointed opening of the gas plate, thereby controlling the size of bubbles through superposition of the separation net, finding out the optimal gas-liquid contact mode, effectively improving the conversion rate of the p-methylsulfonyl toluene, reducing the consumption of main raw materials, saving the production cost, improving the market competitiveness of the product, detecting the discharge amount of the gas through the flowmeter, facilitating the use of a producer, and facilitating the gas to pass through the separation net of a plurality of layers through arranging the necking in the air passage.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.