CN115925091A - Ozone catalytic oxidation system and process for treating multiphase extract - Google Patents
Ozone catalytic oxidation system and process for treating multiphase extract Download PDFInfo
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- CN115925091A CN115925091A CN202310008616.2A CN202310008616A CN115925091A CN 115925091 A CN115925091 A CN 115925091A CN 202310008616 A CN202310008616 A CN 202310008616A CN 115925091 A CN115925091 A CN 115925091A
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 86
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- 230000003647 oxidation Effects 0.000 title claims abstract description 34
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000008569 process Effects 0.000 title claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 158
- 238000006243 chemical reaction Methods 0.000 claims abstract description 127
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 99
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000011001 backwashing Methods 0.000 claims abstract description 8
- 239000002351 wastewater Substances 0.000 claims abstract description 8
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 4
- 238000010992 reflux Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 41
- 238000006385 ozonation reaction Methods 0.000 claims description 20
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- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
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- 238000006731 degradation reaction Methods 0.000 description 2
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- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 206010066054 Dysmorphism Diseases 0.000 description 1
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- SKEYZPJKRDZMJG-UHFFFAOYSA-N cerium copper Chemical group [Cu].[Ce] SKEYZPJKRDZMJG-UHFFFAOYSA-N 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
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Abstract
The invention discloses an ozone catalytic oxidation system and process for treating multiphase extract, and relates to the technical field of environmental wastewater enhanced treatment. The process comprises the following steps: s1, feeding liquid; s2, turbulent flow catalysis; s3, refluxing; s4, backwashing. The invention can increase the water flow disturbance by establishing the water outlet circulation, so that the inner and outer reaction cylinders present good turbulent flow state, and the contact effect of the ozone catalyst and ozone gas is increased by the countercurrent contact of the ozone with the multiphase extract in the inner water inlet pipe and the outer reaction cylinder and the mixed contact of the ozone and the multiphase extract in the two-layer catalyst component, so that the contact time of the wastewater and ozonized air is prolonged, and the solubility of the ozone in water is improved.
Description
Technical Field
The invention relates to the technical field of environmental wastewater enhanced treatment, in particular to an ozone catalytic oxidation system and process for treating multiphase extract.
Background
Ozone is a strong oxidant, has strong oxidative degradation effect on organic matters in water, can convert complex organic matters into simple organic matters, and realizes decoloration, deodorization, COD reduction, biodegradability improvement and the like. The redundant ozone can be automatically decomposed into oxygen, and secondary pollution is avoided. Because ozone and organic matter reaction speed is fast, effectual, no secondary pollution and can produce on the spot, raw materials are easy to get, convenient to use, technical equipment are reliable, use more and more in industrial waste water treatment at present, mainly used advanced treatment of waste water to dual function: firstly, guarantee sewage discharge up to standard, secondly realize the reuse of reclaimed water to reach the cyclic utilization of water resource.
The multiphase extraction technology is an efficient and environment-friendly in-situ remediation technology for polluted land, and soil gas, underground water and floating oil layers in an underground polluted area are extracted to the ground to be separated and treated so as to achieve the treatment effect. The multiphase extract obtained by phase separation has the characteristics of complex components, difficult biodegradation, large fluctuation range of water quality and water quantity and the like, and can be only treated by a physicochemical method. The catalytic ozonization technology promotes the degradation of organic matters by generating active oxygen, improves the mineralization rate, and has the characteristics of high efficiency, no secondary pollution and the like.
The catalytic ozonation process of the internal circulation ozone combined with the ozone catalyst can effectively catalyze ozonization multiple extract, improve the degradation rate of organic matters and accelerate the oxidation process. Reduce the generation of OH, enhance the shielding effect on chloride ions and strengthen the catalytic effect. The inner and outer reaction cylinders (1) circularly enhance the turbulent state of water flow, enhance the adaptation to the change of water quality and water quantity and promote three-phase mixing at the same time, thus being beneficial to the exertion of a catalyst, improving the catalytic oxidation effect of ozone and reducing the investment and running cost of the ozone oxidation technology.
However, the catalyst of the currently used ozone is relatively fixed, so that the catalytic effect is gradually reduced along with the increase of time, for example, patent CN205367992U discloses a composite ozone catalytic oxidation, which comprises at least one catalyst catalytic ozone oxidation tower section, at least one photocatalytic ozone oxidation tower section and at least one synergistic ozone oxidation tower section, wherein the tower sections are connected through flanges; a first reserved opening is formed in the upper part of the uppermost tower section, an exhaust opening is formed in the top of the uppermost tower section, and a second reserved opening is formed in the lower part of the lowermost tower section; a composite multi-element oxidant feeding pipeline for feeding the composite multi-element oxidant from the outside to the inside is arranged inside the tower body, the pipeline penetrates through each tower section, and composite multi-element oxidant feeding holes are distributed in the wall of the pipeline; the three technologies of photocatalytic ozonation, synergistic ozonation and catalytic ozonation of a catalyst can be combined in one technology, so that the utilization rate and the oxidation efficiency of ozone are improved to a greater extent. However, the device also has the same problems as the above, so that the ozone catalytic oxidation system and the process need to be optimized in a targeted manner to ensure the continuous, efficient and stable catalytic efficiency.
Disclosure of Invention
In view of the above problems, the present invention provides a catalytic ozonation system and process for multi-phase extraction treatment.
The technical scheme of the invention is as follows:
an ozone catalytic oxidation system for treating multiphase extract comprises an outer reaction cylinder and an inner reaction cylinder, wherein the inner reaction cylinder is positioned at the center of the inner part of the outer reaction cylinder;
the top of the outer reaction cylinder is provided with a top cover, the center of the top of the inner reaction cylinder is provided with a water inlet joint, the water inlet joint is fixedly connected with the bottom of the top cover, one side of the water inlet joint is provided with a main water inlet pipe, the middle part in the inner reaction cylinder is provided with an inner water inlet pipe, the inner water inlet pipe is connected with the main water inlet pipe, the bottom of the inner water inlet pipe penetrates through the inner reaction cylinder and then extends to the inner bottom of the outer reaction cylinder, the peripheries of the bottom and the middle part of the inner reaction cylinder are respectively sleeved with a first catalytic assembly and a second catalytic assembly, two sides of the top of the inner reaction cylinder are respectively provided with a backflow window, two lifting pipes are symmetrically arranged in the inner reaction cylinder, the tops of the lifting pipes penetrate through the top of the inner reaction cylinder and then are connected with an air pipe positioned above the top cover, one side of the tops of the two lifting pipes is respectively provided with a backflow pipe, the backflow pipe penetrates through the water inlet joint and then is communicated with the inner water inlet pipe, the top of the side wall of the outer reaction cylinder is provided with a main drain pipe and a back flush drain pipe, a micropore diffuser is arranged at the position corresponding to the position of the inner water inlet pipe at the bottom of the outer reaction cylinder, and a plurality of micropores circumferentially surround the position corresponding to the positions of the inner reaction cylinder corresponding to the first catalytic assembly and the second catalytic assembly;
the first catalytic assembly comprises a first catalyst disc, the first catalyst disc is rotatably connected with the inner reaction cylinder, the second catalytic assembly comprises a second catalyst disc, the second catalyst disc is connected with the inner wall of the outer reaction cylinder in a vertical sliding mode, and catalysts are filled in the first catalyst disc and the second catalyst disc.
Further, the catalyst is a copper-cerium double-metal ceramsite catalyst, the pipe diameter ratio of the riser pipe to the air pipe is 5:3, the ratio of the distance between the first catalytic assembly and the second catalytic assembly to the height of the outer reaction cylinder is 1:6, the ratio of the diameter to the height of the outer reaction cylinder is 1:6, and the ratio of the diameter of the inner reaction cylinder to the diameter of the outer reaction cylinder is 1:3.
Description of the invention: the catalyst can play a good catalytic oxidation effect, and the contact effect of the ozone catalyst and the ozone gas is improved through the optimized design of the catalyst component and the design of the pipe diameters of the air pipe and the riser pipe.
Further, top cap center department sliding seal is equipped with first rotating ring, first rotating ring bottom symmetry is equipped with two connecting rods, the connecting rod is located interior reaction section of thick bamboo both sides and laminating are close to interior reaction section of thick bamboo outer wall, and interior reaction section of thick bamboo middle part outer wall cover is equipped with the second rotating ring, second rotating ring bottom circumference equidistant is equipped with a plurality of auxiliary connecting rod, and every auxiliary connecting rod is close to its bottom position department and all is equipped with an auxiliary baffle, auxiliary baffle with first catalyst dish bottom fixed connection, auxiliary connecting rod bottom are equipped with special-shaped baffle, special-shaped baffle all is equipped with the arch in corresponding every auxiliary connecting rod position department, and interior reaction section of thick bamboo bottom circumference equidistant is equipped with the spring beam the same with auxiliary connecting rod quantity, spring beam middle part is through a spring and interior reaction section of thick bamboo outer wall connection, the spring beam top with the special-shaped baffle outward flange aligns, and the spring beam top outside is equipped with the third catalyst dish.
Description of the drawings: the relative rotation with the top cap can be realized through the setting of first rotating ring to drive first catalyst dish and rotate under the prerequisite that remains stable, strengthen the contact of the inside catalyst of first catalyst dish and heterogeneous extraction liquid, improve catalytic effect, reciprocating motion can be accomplished to the spring beam in the setting of dysmorphism baffle simultaneously, thereby makes third catalyst dish carry out reciprocating motion, further improves catalytic effect.
Furthermore, first rotating ring with the inside draw-in groove block that is equipped with of top cap is rotated and is connected, top cap one side is equipped with and is used for driving first rotating ring pivoted driving motor, driving motor's output is equipped with the gear, the tooth's socket meshing that gear and first rotating ring upper surface were equipped with is connected, supplementary connecting rod is 4.
Description of the invention: the driving of the first rotating ring is completed by the arrangement of the driving motor.
Furthermore, first catalyst dish and second catalyst dish are open-top's network structure, third catalyst dish is whole network structure, and third catalyst dish end is equipped with first puddler, inside first puddler end extended to first catalyst dish, and first puddler end was equipped with the stirring dead lever.
Description of the drawings: through network structure's setting can make catalyst abundant with heterogeneous extraction liquid contact and can not drop and spill over, can make it stir first catalyst dish inside catalyst when being reciprocating motion along with third catalyst dish through setting up of stirring dead lever to improve the catalytic effect, realized functional diversity.
Further, second rotating ring top surface symmetry is equipped with two second puddlers, the end of second puddler is rotated and is connected and be equipped with the stirring dwang, the stirring dwang extends to inside the second catalyst dish, the top cap bottom surface is equipped with the push rod motor, first telescopic link is connected to the output of push rod motor, bottom connection in first telescopic link bottom and the second catalyst dish is equipped with the second telescopic link that is used for keeping the second catalyst dish stable with the ejector pin bottom surface of first telescopic link symmetry one side, bottom connection in second telescopic link bottom and the second catalyst dish, second catalyst dish inside wall are equipped with a plurality of fluting, slide to being located when the second catalyst dish during outer reaction cylinder bottom the fluting with third catalyst dish docks each other.
Description of the drawings: the first rotating ring can be driven to stir the catalyst in the second catalyst disk when rotating by the aid of the stirring rotating rod, and the first telescopic rod and the second telescopic rod cannot collide to block the dead condition.
Furthermore, two sides of the outer wall of the second catalyst disk are respectively provided with a sliding block, and the sliding blocks are in sliding connection with sliding grooves formed in the inner wall of the outer reaction cylinder.
Description of the invention: the second catalyst disk can slide up and down through the arrangement of the sliding block and the sliding groove, so that backwashing is facilitated.
Furthermore, one side of the top cover is provided with a two-way vent valve, and the middle part of the inner water inlet pipe is provided with a one-way valve.
Description of the drawings: the internal pressure of the outer reaction cylinder can be adjusted through the arrangement of the two-way ventilation valve, and the multi-phase extract in the inner water inlet pipe can flow in one direction through the arrangement of the one-way valve, so that the phenomenon of backflow is avoided.
Any one of the above ozone catalytic oxidation processes for multi-phase extraction liquid treatment by using the ozone catalytic oxidation system for multi-phase extraction liquid treatment comprises the following steps:
s1, liquid feeding: injecting multiphase extract to be treated from a main water inlet pipe, then feeding the multiphase extract into an inner water inlet pipe, and opening a microporous diffuser corresponding to the inner water inlet pipe to inject ozone into the inner water inlet pipe so as to enable the multiphase extract to be in preliminary countercurrent contact with the ozone;
s2, turbulent flow catalysis: the multiphase extract flows out from the bottom of the inner water inlet pipe and enters the outer reaction cylinder, the microporous diffusers corresponding to the first catalytic assembly and the second catalytic assembly are opened, ozone is injected into the outer reaction cylinder, the multiphase extract forms a turbulent flow state along with the ozone in the rising process, then the multiphase extract sequentially flows through the first catalyst disc and the second catalyst disc, and catalysts in the first catalyst disc and the second catalyst disc perform catalytic oxidation on the multiphase extract;
s3, refluxing: when the multiphase extract flows through the upper part of the outer reaction cylinder, a part of the multiphase extract flows back to the inner reaction cylinder through the return window, the air pump externally connected with the air pipe is started to enable the air pipe to generate negative pressure under the action of aeration, the multiphase extract in the inner reaction cylinder enters the ascending pipe and then enters the inner water inlet pipe through the return pipe at the top of the ascending pipe, so that the steps S1-S2 are repeated again, and the rest multiphase extract is discharged through the main water discharge pipe;
s4, backwashing: and opening all the microporous diffusers to flush by water injection, flushing the catalysts in the first catalyst disk and the second catalyst disk, and discharging flushing wastewater through a back-flushing drain pipe.
The invention has the beneficial effects that:
(1) The ozone catalytic oxidation system for treating the multiphase extract can increase water flow disturbance by establishing water outlet circulation, so that the inner and outer reaction cylinders are in a good turbulent flow state, ozone is in countercurrent contact with the multiphase extract in the inner water inlet pipe and the outer reaction cylinder and is in mixed contact with the multiphase extract in the two-layer catalyst assembly, the contact effect of an ozone catalyst and ozone gas is increased by the optimized design of the catalyst assembly and the pipe diameter design of an air pipe and a riser, the ratio of the height to the diameter of the inner and outer reaction cylinders is optimized, the contact time of wastewater and ozonized air is prolonged, the solubility of ozone in water is improved, the full contact and mixing of air and water are realized, and the flow state of gas and liquid in the inner and outer reaction cylinders is optimized.
(2) The ozone catalytic oxidation system for treating the multiphase extract can realize relative rotation with the top cover through the arrangement of the first rotating ring, so that the first catalyst disc is driven to rotate on the premise of keeping stability, the contact between a catalyst in the first catalyst disc and the multiphase extract is enhanced, the catalytic effect is improved, and meanwhile, the arrangement of the special-shaped baffle plate can be matched with the spring rod to complete reciprocating motion, so that the third catalyst disc can reciprocate, and the catalytic effect is further improved; the catalyst can be fully contacted with the multiphase extraction liquid and cannot fall off and overflow due to the arrangement of the net-shaped structure, and the catalyst in the first catalyst disc can be stirred while reciprocating along with the third catalyst disc due to the arrangement of the stirring fixed rod, so that the contact time of the catalyst and the multiphase extraction liquid is prolonged, the catalytic effect is improved, and the functional diversity is realized; the first rotating ring can be driven to stir the catalyst in the second catalyst disk when rotating by the aid of the stirring rotating rod, and the first telescopic rod and the second telescopic rod cannot collide to block the dead condition.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an ozone catalytic oxidation system of the present invention;
FIG. 2 is a schematic view of the internal structure of the catalytic ozonation system of the present invention;
FIG. 3 is a schematic view of the bottom structure in the catalytic ozonation system of the present invention;
FIG. 4 is a schematic view of the bottom structure outside the reaction cylinder in the catalytic ozonation system of the present invention;
FIG. 5 is a schematic view of the inside of the catalytic ozonation system of the present invention and the structure of the inner water inlet pipe;
FIG. 6 is a schematic view of the inside of the catalytic ozonation system of the present invention in elevation and the riser structure;
FIG. 7 is a sectional view of the connecting structure of the top cover and the first rotary ring of the catalytic ozonation system of the present invention;
FIG. 8 is a partially enlarged schematic view of a second stirring rod and a stirring rotating rod of the catalytic ozonation system of the present invention.
Wherein, 1-an outer reaction cylinder, 11-a top cover, 12-a main water discharge pipe, 13-a back-flushing water discharge pipe, 14-a microporous diffuser, 15-a clamping groove, 16-an air pipe, 17-a sliding groove, 18-a two-way vent valve, 2-an inner reaction cylinder, 21-a water inlet joint, 22-an inner water inlet pipe, 23-a backflow window, 24-a lifting pipe, 25-a backflow pipe, 26-a one-way valve, 3-a main water inlet pipe, 4-a first catalytic assembly, 41-a first catalyst disc, 42-a stirring fixing rod, 5-a second catalytic assembly, 51-a second catalyst disc, 52-a slotting, 53-a sliding block, 6-a push rod motor, 61-a first telescopic rod, 62-a second telescopic rod, 7-a first rotating ring, 71-a connecting rod, 72-a driving motor, 73-a gear, 74-a tooth groove, 8-a second rotating ring, 81-an auxiliary connecting rod, 82-an auxiliary baffle, 83-a special-shaped baffle, 84-a second stirring rod, 85-a stirring rotating rod, 9-a spring rod, 91-a spring, 92-a third catalyst disc, and 93-a third stirring rod.
Detailed Description
Example 1
As shown in fig. 1 and 2, an ozone catalytic oxidation system for multi-phase extraction liquid treatment comprises an outer reaction cylinder 1 and an inner reaction cylinder 2, wherein the inner reaction cylinder 2 is positioned at the center of the inner part of the outer reaction cylinder 1;
as shown in fig. 2, 5 and 6, a top cover 11 is arranged on the top of an outer reaction cylinder 1, a water inlet joint 21 is arranged at the center of the top of an inner reaction cylinder 2, the water inlet joint 21 is fixedly connected with the bottom of the top cover 11, a main water inlet pipe 3 is arranged on one side of the water inlet joint 21, an inner water inlet pipe 22 is arranged in the middle of the inner reaction cylinder 2, the inner water inlet pipe 22 is connected with the main water inlet pipe 3, the bottom of the inner water inlet pipe 22 extends to the inner bottom of the outer reaction cylinder 1 after penetrating through the inner reaction cylinder 2, a first catalytic assembly 4 and a second catalytic assembly 5 are respectively sleeved on the peripheries of the bottom and the middle of the inner reaction cylinder 2, two return windows 23 are respectively arranged on two sides of the top of the inner reaction cylinder 2, two lift pipes 24 are symmetrically arranged in the inner reaction cylinder 2, the top of each riser 24 penetrates through the top of the inner reaction cylinder 2 and then is connected with an air pipe 16 positioned above the top cover 11, one return pipe 25 is arranged on each of the top sides of the two risers 24, the return pipes 25 penetrate through the water inlet joint 21 and then are communicated with the inner water inlet pipe 22, the top of the side wall of the outer reaction cylinder 1 is provided with a main drain pipe 12 and a back flush drain pipe 13, a microporous diffuser 14 is arranged at the bottom in the outer reaction cylinder 1 and corresponds to the inner water inlet pipe 22, a plurality of microporous diffusers 14 are circumferentially arranged at the bottom in the outer reaction cylinder 1 and correspond to the first catalytic assembly 4 and the second catalytic assembly 5, one side of the top cover 11 is provided with a two-way vent valve 18, and the middle of the inner water inlet pipe 22 is provided with a one-way valve 26;
as shown in fig. 2 and 3, the first catalytic assembly 4 includes a first catalyst disk 41, the first catalyst disk 41 is rotatably connected with the inner reaction cylinder 2, the second catalytic assembly 5 includes a second catalyst disk 51, the second catalyst disk 51 is connected with the inner wall of the outer reaction cylinder 1 in a vertical sliding manner, the first catalyst disk 41 and the second catalyst disk 51 are both filled with catalysts, the catalysts are cerous-copper bimetallic ceramsite catalysts, the pipe diameter ratio of the riser 24 to the air pipe 16 is 5:3, the ratio of the distance between the first catalytic assembly 4 and the second catalytic assembly 5 to the height of the outer reaction cylinder 1 is 1:6, the ratio of the diameter to the height of the outer reaction cylinder 1 is 1:6, and the diameter ratio of the inner reaction cylinder 2 to the outer reaction cylinder 1 is 1:3;
as shown in fig. 3, 6, 7, and 8, a first rotating ring 7 is slidably and hermetically arranged at the center of a top cover 11, two connecting rods 71 are symmetrically arranged at the bottom of the first rotating ring 7, the connecting rods 71 are located at two sides of an inner reaction cylinder 2 and are attached to and close to the outer wall of the inner reaction cylinder 2, a second rotating ring 8 is sleeved on the outer wall of the middle of the inner reaction cylinder 2, 4 auxiliary connecting rods 81 are circumferentially and equidistantly arranged at the bottom of the second rotating ring 8, an auxiliary baffle 82 is arranged at a position close to the bottom of each auxiliary connecting rod 81, the auxiliary baffle 82 is fixedly connected with the bottom of a first catalyst disk 41, a special-shaped baffle 83 is arranged at the bottom of each auxiliary connecting rod 81, a bump is arranged at a position corresponding to each auxiliary connecting rod 81 on the special-shaped baffle 83, spring rods 9 with the same number as the auxiliary connecting rods 81 are circumferentially and equidistantly arranged at the bottom of the inner reaction cylinder 2, the middle of each spring rod 9 is connected with the outer wall of the inner reaction cylinder 2 through a spring 91, the top of each spring rod 9 is aligned with the outer edge of the special-shaped baffle 83, a third catalyst disk 92 is arranged at the outer side of the top of each spring rod 9, the first rotating ring 7 is connected with a clamping groove 15 arranged in the first rotating ring 7 in a clamping and is arranged in a rotating ring 11, a driving gear 72 for driving motor driving the top cover 11, and a driving gear 72, and a driving motor 72 for driving motor 72, and a driving motor for driving a driving motor 72, which is arranged on the top of a driving motor connected with a driving motor 72;
as shown in fig. 2 to 4, the first catalyst disk 41 and the second catalyst disk 51 are of a mesh structure with open tops, the third catalyst disk 92 is of an integral mesh structure, a first stirring rod 93 is disposed at the end of the third catalyst disk 92, the end of the first stirring rod 93 extends into the first catalyst disk 41, a stirring fixing rod 42 is disposed at the end of the first stirring rod 93, two second stirring rods 84 are symmetrically disposed on the top surface of the second rotating ring 8, a stirring rotating rod 85 is rotatably connected to the end of the second stirring rod 84, the stirring rotating rod 85 extends into the second catalyst disk 51, a push rod motor 6 is disposed at the bottom surface of the top cover 11, the push rod motor 6 is a commercially available push rod motor, the output end of the push rod motor 6 is connected to the first telescopic rod 61, the bottom of the first telescopic rod 61 is connected to the inner bottom of the second catalyst disk 51, a second telescopic rod 62 for keeping the second catalyst disk 51 stable is disposed on the bottom surface of the push rod on the symmetrical side of the first telescopic rod 61, the bottom of the second telescopic rod 62 is connected to the inner bottom of the second catalyst disk 51, 4 inner side walls of the second catalyst disk 51 are disposed with 4 inner side walls of the second catalyst disk, when the second catalyst disk 51 is located on the outer side of the grooved slide block, and the outer wall of the grooved slide block 53, and the slide block 17 is disposed on the outer wall of the grooved slide block, and the slide block 17, and the slide block are disposed on the outer wall of the grooved slide block 51, and the grooved slide block, and the slide block, which are disposed on the outer wall of the grooved slide block, and the slide block 51.
Example 2
The present embodiment is different from embodiment 1 in that: the number of the auxiliary links 81 is different.
The number of the auxiliary links 81 is 5, and the number of the auxiliary baffle 82, the spring rod 9, the spring 91, the third catalyst disk 92, the first stirring rod 93, the stirring fixing rod 42, and the open groove 52 is 5.
Example 3
The present embodiment is different from embodiment 1 in that: the number of the auxiliary links 81 is different.
The number of the auxiliary connecting rods 81 is 5, and the number of the auxiliary baffle 82, the spring rod 9, the spring 91, the third catalyst disk 92, the first stirring rod 93, the stirring fixing rod 42 and the slot 52 is 3.
Example 4
This example is the catalytic ozonation process for multi-phase extraction fluid treatment performed by the catalytic ozonation system for multi-phase extraction fluid treatment in example 1, and includes the following steps:
s1, liquid feeding: injecting multiphase extract to be treated from a main water inlet pipe 3, then entering an inner water inlet pipe 22, opening a microporous diffuser 14 corresponding to the inner water inlet pipe 22 to inject ozone into the inner water inlet pipe 22, and enabling the multiphase extract to be in preliminary countercurrent contact with the ozone;
s2, turbulent flow catalysis: the multiphase extract flows out from the bottom of the inner water inlet pipe 22 and enters the outer reaction cylinder 1, the microporous diffusers 14 corresponding to the first catalytic assembly 4 and the second catalytic assembly 5 are opened to inject ozone into the outer reaction cylinder 1, so that the multiphase extract forms a turbulent flow state along with the ozone in the rising process, then the multiphase extract sequentially flows through the first catalyst disc 41 and the second catalyst disc 51, and the catalysts in the first catalyst disc 41 and the second catalyst disc 51 perform catalytic oxidation on the multiphase extract;
s3, refluxing: when the multiphase extract flows through the upper part of the outer reaction cylinder 1, a part of the multiphase extract flows back to the inner reaction cylinder 2 through the return window 23, the air pump externally connected with the air pipe 16 is started to enable the air pipe 16 to generate negative pressure under the aeration effect, the multiphase extract in the inner reaction cylinder 2 enters the riser pipe and then enters the inner water inlet pipe 22 through the return pipe 25 at the top of the riser pipe, so that the steps S1-S2 are repeated again, and the rest multiphase extract is discharged through the main water discharge pipe 12;
s4, backwashing: all the microporous diffusers 14 are opened to flush with water, the catalyst inside the first catalyst tray 41 and the second catalyst tray 51 is flushed, and the flushing wastewater is discharged through the backwashing water discharge pipe 13.
The working principle is as follows: the operation principle of the system of the present invention will be briefly described below in conjunction with the method of the present invention.
In the step S2, the driving motor 72 is turned on to drive the gear 73 to rotate, so as to drive the first rotating ring 7 to rotate inside the clamping groove 15 under the action of the tooth grooves 74, and further drive the connecting rod 71 and the second rotating ring 8 to rotate, and meanwhile, the second stirring rod 84 and the stirring rotating rod 85 on the second rotating ring 8 rotationally stir the catalyst inside the second catalyst disk 51, so as to improve the contact time between the catalyst inside the second catalyst disk 51 and the multiphase extract, thereby improving the solubility of ozone in water, realizing sufficient contact and mixing of air and water, and improving the catalytic oxidation effect;
meanwhile, the auxiliary connecting rod 81 on the second rotating ring 8 drives the first catalyst disk 41 to rotate under the action of the auxiliary baffle plate, so that the contact time of the catalyst in the first catalyst disk 41 and the multiphase extract is prolonged, the solubility of ozone in water is improved, the sufficient contact and mixing of air and water are realized, and the catalytic oxidation effect is improved;
meanwhile, the special-shaped baffle 83 intermittently extrudes the spring of the spring rod 9 in the rotating process, so that the spring rod 9 drives the third catalyst disk 92 to intermittently perform reciprocating motion of pushing and withdrawing, thereby improving the contact time of the catalyst in the third catalyst disk 92 and the multiphase extract, improving the solubility of ozone in water, realizing full contact and mixing of air and water, and improving the catalytic oxidation effect;
meanwhile, the first stirring rod 93 drives the stirring fixing rod 42 to intermittently push out and retract to reciprocate, so that the catalyst in the rotating first catalyst disk 41 is further stirred, the solubility of ozone in water is improved, air and water are fully contacted and mixed, and the catalytic oxidation effect is improved;
when step S4 is performed, the second catalyst disk 51 needs to be lowered, at this time, the irregular baffle 83 of the second rotating ring 8 is adjusted to a proper position, so that the spring rod 9 is no longer blocked by the protrusion of the irregular baffle 83, then the push rod motor 6 is started to drive the first telescopic rod 61 to descend to lower the second catalyst disk 51 to a specified position and to be flush with the first catalyst disk 41, at this time, the microporous diffuser 14 is started to perform high-pressure water injection backwashing, and the driving motor 72 is started again to operate in the same manner as described above, so that the third catalyst disk 92 reciprocates in the slot 52, the washing efficiency is improved, and the three catalyst disks can obtain good washing effect, and the washing sewage is discharged from the backwashing water discharge pipe 13.
Examples of the experiments
The experimental method in example 4 was used to perform field simulation experiments, and the results were as follows:
a first group: the adding amount of ozone is 200 mg/(L x h), the temperature is 25 ℃, the hydraulic retention time is 1h, the ozone concentration is 16.66mg/L, the intermittent reaction is carried out, 30 percent of catalyst is added, the COD concentration is reduced from 238mg/L to 130mg/L, the removal rate of COD is 45.3 percent, and the removal rate is improved by 15 percent compared with that of a common ozone reaction tower;
second group: the adding amount of ozone is 400 mg/(L x h), the temperature is 25 ℃, the hydraulic retention time is 1h, the ozone concentration is 22.5mg/L, the intermittent reaction is carried out, 30 percent of catalyst is added, the COD concentration is reduced from 238mg/L to 96mg/L, the removal rate of COD is 57.7 percent, and the removal rate is improved by 19.5 percent compared with the common ozone reaction tower;
third group: the ozone adding amount is 200 mg/(L x h), the temperature is 25 ℃, the hydraulic retention time is 1h, the ozone concentration is 16.66mg/L, the continuous flow reaction is carried out, 30 percent of ozone catalyst is added, the COD concentration is reduced from 200mg/L to 102mg/L, the COD removal rate is 49.5 percent, and the removal rate is improved by 10 percent compared with the common ozone reaction tower.
Claims (9)
1. An ozone catalytic oxidation system for treating multiphase extract is characterized by comprising an outer reaction cylinder (1) and an inner reaction cylinder (2), wherein the inner reaction cylinder (2) is positioned at the center of the inner part of the outer reaction cylinder (1);
outer reaction cylinder (1) top is equipped with top cap (11), interior reaction cylinder (2) top center department is equipped with water supply connector (21), water supply connector (21) with top cap (11) bottom fixed connection, water supply connector (21) one side are equipped with total inlet tube (3), and interior reaction cylinder (2) interior middle part is equipped with interior inlet tube (22), interior inlet tube (22) with total inlet tube (3) are connected, and interior inlet tube (22) bottom runs through interior reaction cylinder (2) back and extends to outer reaction cylinder (1) bottom, and the periphery of interior reaction cylinder (2) bottom and middle part is equipped with first catalytic component (4) and second catalytic component (5) respectively, and interior reaction cylinder (2) top both sides respectively are equipped with one backward flow window (23), and interior reaction cylinder (2) inside symmetry is equipped with two riser (24), riser (24) top runs through interior reaction cylinder (2) top back and is connected with air pipe (16) that are located top cap (11) top, and two back flow (24) top one back flow pipe (25) top side are equipped with back flow pipe (25), water supply connector (25) and interior reaction cylinder (1) top and water supply connector (12) outside and inlet tube (12) communicate water supply pipe (12), and interior water inlet tube (1) and interior water inlet tube (22), and interior water supply pipe (12) are located to interior water inlet tube (12) and interior water outlet pipe (12) intercommunication, and interior water inlet tube (1) outside the outer reaction cylinder (1) and are located to the periphery of running through to the outer side wall, and interior water inlet tube (1) to the interior water inlet tube (12) to the outer reaction cylinder (22) of being equipped with the cover of reaction cylinder (1) and the cover of reaction cylinder (22) and the cover of being equipped with the cover of reaction cylinder (1) and the outer reaction cylinder (22) of reaction cylinder (2) respectively, and the cover of being equipped with the cover of reaction cylinder (2) and the cover of being equipped with the top, and the top of reaction cylinder (22) of reaction cylinder (2) and the portion of reaction cylinder (2) and the portion of being equipped with the shell The hole diffusers (14) are positioned at the inner bottom of the outer reaction cylinder (1), and a plurality of micropore diffusers (14) are circumferentially arranged at the positions corresponding to the first catalytic assembly (4) and the second catalytic assembly (5);
the first catalytic assembly (4) comprises a first catalyst disc (41), the first catalyst disc (41) is rotatably connected with the inner reaction cylinder (2), the second catalytic assembly (5) comprises a second catalyst disc (51), the second catalyst disc (51) is connected with the inner wall of the outer reaction cylinder (1) in an up-and-down sliding mode, and catalysts are filled in the first catalyst disc (41) and the second catalyst disc (51).
2. An ozone catalytic oxidation system for multiphase extract treatment according to claim 1, characterized in that the catalyst is cerous-copper bimetallic ceramsite catalyst, the pipe diameter ratio of the riser pipe (24) to the air pipe (16) is 5:3, the ratio of the distance between the first catalytic component (4) and the second catalytic component (5) to the height of the outer reaction cylinder (1) is 1:6, the ratio of the diameter to the height of the outer reaction cylinder (1) is 1:6, and the ratio of the diameter of the inner reaction cylinder (2) to the diameter of the outer reaction cylinder (1) is 1:3.
3. The system of claim 1, wherein the ozone oxidation catalyst is a catalyst selected from the group consisting of a catalyst, and a combination thereof, it is characterized in that the center of the top cover (11) is provided with a first rotating ring (7) in a sliding sealing way, two connecting rods (71) are symmetrically arranged at the bottom of the first rotating ring (7), the connecting rods (71) are positioned at two sides of the inner reaction cylinder (2) and are attached to be close to the outer wall of the inner reaction cylinder (2), the outer wall of the middle part of the inner reaction cylinder (2) is sleeved with a second rotating ring (8), a plurality of auxiliary connecting rods (81) are arranged at the bottom of the second rotating ring (8) at equal intervals in the circumferential direction, an auxiliary baffle plate (82) is arranged at the position, close to the bottom, of each auxiliary connecting rod (81), the auxiliary baffle (82) is fixedly connected with the bottom of the first catalyst disk (41), the bottom of the auxiliary connecting rod (81) is provided with a special-shaped baffle (83), the special-shaped baffle (83) is provided with a bulge at the position corresponding to each auxiliary connecting rod (81), the bottom of the inner reaction cylinder (2) is provided with spring rods (9) with the same number as the auxiliary connecting rods (81) at equal intervals in the circumferential direction, the middle part of the spring rod (9) is connected with the outer wall of the inner reaction barrel (2) through a spring (91), the top of the spring rod (9) is aligned with the outer edge of the special-shaped baffle (83), and a third catalyst disk (92) is arranged on the outer side of the top of the spring rod (9).
4. An ozone catalytic oxidation system for treating a multiphase extract according to claim 3, wherein the first rotating ring (7) is connected with a clamping groove (15) arranged inside the top cover (11) in a clamping and rotating manner, a driving motor (72) for driving the first rotating ring (7) to rotate is arranged on one side of the top cover (11), a gear (73) is arranged at the output end of the driving motor (72), the gear (73) is connected with a tooth groove (74) formed in the upper surface of the first rotating ring (7) in a meshing manner, and the number of the auxiliary connecting rods (81) is 4.
5. The catalytic ozonation system for a multi-phase extraction fluid process according to claim 3, wherein the first catalyst disk (41) and the second catalyst disk (51) are of a net structure with an open top, the third catalyst disk (92) is of a whole net structure, the end of the third catalyst disk (92) is provided with the first stirring rod (93), the end of the first stirring rod (93) extends into the first catalyst disk (41), and the end of the first stirring rod (93) is provided with the stirring fixing rod (42).
6. The catalytic ozonation system for multi-phase extraction liquid treatment according to claim 3, wherein the top surface of the second rotating ring (8) is symmetrically provided with two second stirring rods (84), the end of each second stirring rod (84) is rotatably connected with a stirring rotating rod (85), the stirring rotating rods (85) extend to the inside of the second catalyst tray (51), the bottom surface of the top cover (11) is provided with the push rod motor (6), the output end of the push rod motor (6) is connected with the first telescopic rod (61), the bottom of the first telescopic rod (61) is connected with the bottom inside the second catalyst tray (51), the bottom surface of the push rod on one side symmetrical to the first telescopic rod (61) is provided with a second telescopic rod (62) for keeping the second catalyst tray (51) stable, the bottom of the second telescopic rod (62) is connected with the bottom inside of the second catalyst tray (51), the inside wall of the second catalyst tray (51) is provided with a plurality of slots (52), and when the second catalyst tray (51) slides down to be located at the bottom of the outer reaction cylinder (1), the slots (52) are butted with the third catalyst tray (92).
7. An ozone catalytic oxidation system for multi-phase extraction treatment according to claim 1, characterized in that the second catalyst disk (51) is provided with a sliding block (53) on each side of the outer wall, and the sliding blocks (53) are slidably connected with the sliding grooves (17) arranged on the inner wall of the outer reaction cylinder (1).
8. An ozone catalytic oxidation system for multi-phase extraction treatment according to claim 1, characterized in that the top side of the top cover (11) is provided with a two-way vent valve (18), and the middle part of the inner water inlet pipe (22) is provided with a one-way valve (26).
9. The catalytic ozonation process of a multi-phase extract treatment using the catalytic ozonation system for a multi-phase extract treatment according to any one of claims 1 to 8, comprising the steps of:
s1, liquid feeding: injecting multiphase extract to be treated from a main water inlet pipe (3), then entering an inner water inlet pipe (22), opening a microporous diffuser (14) corresponding to the inner water inlet pipe (22) to inject ozone into the inner water inlet pipe (22), and enabling the multiphase extract to be in preliminary countercurrent contact with the ozone;
s2, turbulent flow catalysis: the multiphase extract flows out from the bottom of the inner water inlet pipe (22) and enters the outer reaction cylinder (1), ozone is injected into the outer reaction cylinder (1) by opening a micropore diffuser (14) corresponding to the first catalytic assembly (4) and the second catalytic assembly (5), so that the multiphase extract forms a turbulent flow state along with the ozone in the rising process, then the multiphase extract sequentially flows through the first catalyst disc (41) and the second catalyst disc (51), and the catalysts in the first catalyst disc (41) and the second catalyst disc (51) perform catalytic oxidation on the multiphase extract;
s3, refluxing: when the multiphase extract flows through the upper part of the outer reaction cylinder (1), a part of the multiphase extract flows back to the inner reaction cylinder (2) through a backflow window (23), an air pump externally connected with an air pipe (16) is started to enable the air pipe (16) to generate negative pressure under the action of aeration, the multiphase extract in the inner reaction cylinder (2) enters a rising pipe and then enters an inner water inlet pipe (22) through a backflow pipe (25) at the top of the rising pipe, so that the steps S1-S2 are repeated again, and the rest of the multiphase extract is discharged through a main water discharge pipe (12);
s4, backwashing: and (3) opening all the microporous diffusers (14) to flush by water injection, flushing the catalyst in the first catalyst disk (41) and the second catalyst disk (51), and discharging flushing wastewater through a back flushing drain pipe (13).
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| JP2023036212A JP7291311B1 (en) | 2023-01-04 | 2023-03-09 | Ozone catalytic oxidation system and process for multiphase extract treatment |
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