CN110743483A - Energy-efficient benzoic acid oxidation unit - Google Patents
Energy-efficient benzoic acid oxidation unit Download PDFInfo
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- CN110743483A CN110743483A CN201911225957.5A CN201911225957A CN110743483A CN 110743483 A CN110743483 A CN 110743483A CN 201911225957 A CN201911225957 A CN 201911225957A CN 110743483 A CN110743483 A CN 110743483A
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- stirring
- oxidation tank
- oxidation
- tank
- aeration
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- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 65
- 230000003647 oxidation Effects 0.000 title claims abstract description 63
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 235000010233 benzoic acid Nutrition 0.000 title claims abstract description 18
- 239000005711 Benzoic acid Substances 0.000 title claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 70
- 238000005273 aeration Methods 0.000 claims abstract description 43
- 238000000926 separation method Methods 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000011049 filling Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 206010011224 Cough Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
- C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00121—Controlling the temperature by direct heating or cooling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention belongs to the technical field of benzoic acid oxidation, and particularly relates to a high-efficiency energy-saving benzoic acid oxidation device which comprises an oxidation tank, wherein a solution to be oxidized is stored in the oxidation tank, an aeration pipe is arranged at the bottom of the oxidation tank, aeration holes are uniformly distributed at the bottom of the aeration pipe, a plurality of layers of uniformly distributed separation screen plates are arranged in the oxidation tank at the upper end of the aeration pipe, stirring balls are filled between the upper and lower adjacent separation screen plates, a stirring rod is arranged in the middle of the oxidation tank and movably inserted into the middle of the separation screen plates, a plurality of fixedly connected stirring support rods are arranged on the stirring rod positioned between the separation screen plates, a heating tank is arranged in the middle of the stirring rod, a plurality of heating pipes are arranged in the heating tank, a plurality of communicating grooves are arranged on the stirring rod positioned outside the heating tank, isolating nets fixedly connected are arranged outside the communicating grooves, an, the integral contact oxidation efficiency is improved, and the integral production efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of benzoic acid, and particularly relates to a high-efficiency energy-saving benzoic acid oxidation device.
Background
Benzoic acid, also known as benzoic acid, has the molecular formula of C6H5COOH, and is a compound formed by substituting one hydrogen on a benzene ring with a carboxyl group (-COOH). Is a scaly or needle crystal having an odor of benzene or formaldehyde at normal temperature. Its vapor has strong irritation, and is easy to cause cough after being inhaled. Slightly soluble in water and easily soluble in organic solvents such as ethanol and diethyl ether.
The production process flow of the benzoic acid oxidation procedure is described as follows: toluene enters an oxidation tower through a raw material pump; and when the temperature of the toluene reaches 150-180 ℃, the toluene and air which is bubbled into the oxidation tower are subjected to oxidation reaction in the oxidation tower. And tail gas generated by the oxidation reaction enters a tail gas adsorption device after three-stage condensation to be treated and discharged after reaching the standard, and condensate liquid is separated to remove water generated by the reaction and then returns to the oxidation tower to continue to participate in the reaction.
The existing oxidation device has low heating speed, and the oxidation efficiency is low when the oxidation is carried out, thereby affecting the overall production efficiency.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide an efficient and energy-saving benzoic acid oxidation device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-efficiency energy-saving benzoic acid oxidation device comprises an oxidation tank, wherein a solution to be oxidized is stored in the oxidation tank, an aeration pipe is arranged at the bottom of the oxidation tank, aeration holes which are uniformly distributed are formed in the bottom of the aeration pipe, a plurality of layers of uniformly distributed separation screen plates are arranged in the oxidation tank and positioned at the upper end of the aeration pipe, stirring balls are filled between the vertically adjacent separation screen plates, a stirring rod is arranged in the middle of the oxidation tank and movably inserted into the middle of the separation screen plates, a plurality of fixedly connected stirring support rods are arranged on the stirring rod positioned between the separation screen plates, a heating tank is arranged in the middle of the stirring rod, a plurality of heating pipes are arranged in the heating tank, a plurality of communicating grooves are formed in the stirring rod positioned outside the heating tank, isolating nets which are fixedly connected are arranged outside the communicating grooves, connecting rods which are fixedly connected are arranged at the upper ends of the stirring rods, the utility model discloses a solar energy water heater, including oxidation tank, connecting rod end connection, agitator motor, feed inlet, aeration fan, honeycomb duct, oxidation tank upper end is equipped with agitator motor, agitator motor output passes through chain and connecting rod end connection, oxidation tank upper end one side is equipped with the feed inlet, and oxidation tank upper end opposite side is equipped with the condensation back flow that is linked together, oxidation tank one side is equipped with aeration fan, aeration fan inlet end is equipped with the intake pipe that is linked together, and aeration fan exhaust end is equipped with the honeycomb duct that is linked together, the honeycomb.
Preferably, the stirring ball is made of an inert material with the density close to that of the solution in the oxidation tank, the filling density of the stirring ball is not more than 50% of the filling volume, and the mesh aperture of the separation screen plate is smaller than the particle size of the stirring ball.
Preferably, the stirring struts positioned between the upper and lower adjacent separation mesh plates are distributed in a vertically staggered manner.
Preferably, the aeration pipe is formed by mutually communicating a plurality of circular ring-shaped pipe bodies with decreasing diameters, a plurality of fixing blocks are arranged on the outer side of the aeration pipe, and the outer side of each fixing block is fixedly connected with the inner wall of the oxidation tank.
Preferably, the stirring rod and the stirring support rod are made of metal materials with good heat conductivity.
Compared with the prior art, the invention has the following technical effects:
the invention utilizes the form of arranging the heating pipe in the stirring rod to heat the liquid in the oxidation tank, so that the whole heating is more uniform, meanwhile, the rotation of the stirring rod can effectively improve the heating efficiency of the liquid, gas enters the oxidation tank and is oxidized with the liquid in the tank through the form of aeration, the design of the multi-layer separation screen plate can break up bubbles entering the tank through aeration, so that the gas-liquid contact probability is improved, thereby improving the whole oxidation efficiency, and meanwhile, the design of the stirring ball can drive the stirring ball to continuously move up and down between the corresponding separation screen plates through the flow of the aeration and be in a boiling state, so that the stirring can be effectively carried out in the whole space, and the periodic stirring of the stirring support rods is combined, thereby greatly improving the whole contact oxidation efficiency and improving the whole production efficiency.
Drawings
FIG. 1 is a schematic view of a front view structure provided by the present invention;
FIG. 2 is a schematic view of the bottom structure of the aeration pipe provided by the present invention;
FIG. 3 is a schematic view of the inner top structure of the stirring rod according to the present invention;
the reference numbers in the figures illustrate: 1. an oxidation tank; 11. a feed inlet; 12. a condensing reflux pipe; 13. a stirring motor; 14. a chain; 15. a connecting rod; 16. a stirring rod; 17. heating a tube; 18. a communicating groove; 181. a heating tank; 182. an isolation net; 19. stirring the supporting rod; 21. separating the screen plate; 22. stirring balls; 23. an aeration pipe; 24. an aeration hole; 25. a fixed block; 26. a flow guide pipe; 27. an aeration fan; 28. an air inlet pipe.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further clarified by combining the specific drawings.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1-3, a high-efficiency energy-saving benzoic acid oxidation device comprises an oxidation tank 1, wherein a solution to be oxidized is stored in the oxidation tank 1, an aeration pipe 23 is arranged at the bottom of the oxidation tank 1, aeration holes 24 are uniformly distributed at the bottom of the aeration pipe 23, a plurality of layers of uniformly distributed separation screen plates 21 are arranged in the oxidation tank 1 and positioned at the upper end of the aeration pipe 23, stirring balls 22 are filled between the upper and lower adjacent separation screen plates 21, a stirring rod 16 is arranged in the middle of the oxidation tank 1, the stirring rod 16 is movably inserted into the middle of the separation screen plates 21, a plurality of fixedly connected stirring support rods 19 are arranged on the stirring rod 16 positioned between the separation screen plates 21, a heating tank 181 is arranged in the middle of the stirring rod 16, a plurality of heating pipes 17 are arranged in the heating tank 181, a plurality of communicating tanks 18 are arranged on the stirring rod 16 positioned outside the heating tank 181, and fixedly connected isolation nets 182, the utility model discloses a portable oxidation treatment device, including puddler 16, connecting rod 15, feed inlet 11, condensate return pipe 12, aeration fan 27 inlet end is equipped with intake pipe 28 that is linked together, and aeration fan 27 exhaust end is equipped with the honeycomb duct 26 that is linked together, honeycomb duct 26 passes oxidation jar 1 and aeration pipe 23 intercommunication.
Further, the stirring ball 22 is made of inert materials with the density close to that of the solution in the oxidation tank 1, the filling density of the stirring ball 22 is not more than 50% of the filling volume, and the aperture of the mesh of the separation screen 21 is smaller than the particle size of the stirring ball 22.
The selection of the material of the stirring ball 22 effectively prevents the stirring ball from reacting with the solution to be oxidized, and the selection of the density of the stirring ball 22 enables the stirring ball to be suspended in the liquid, so that the stirring effect of the stirring ball can be realized to the maximum extent during aeration.
Further, the stirring struts 19 located between the upper and lower adjacent separation mesh plates 21 are distributed in a staggered manner.
The design of the stirring support rod 19 enables the stirring of the stirring support rod 19 to be more uniform, and the stirring efficiency is improved.
Further, the aeration pipe 23 is formed by mutually communicating a plurality of circular ring-shaped pipe bodies with gradually decreased diameters, a plurality of fixing blocks 25 are arranged on the outer side of the aeration pipe 23, and the outer side of each fixing block 25 is fixedly connected with the inner wall of the oxidation tank 1.
The design of aeration pipe makes holistic gas get into more evenly in the oxidation tank, and the aeration is more even, improves oxidation efficiency.
Further, the stirring rod 16 and the stirring rod support 19 are made of a metal material having good thermal conductivity.
The design of the stirring rod 16 and the stirring support rod 19 improves the overall heating efficiency by utilizing the heat conduction of materials.
The foregoing shows and describes the general principles, essential features, and inventive features of this invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. An energy-efficient benzoic acid oxidation unit which characterized in that: comprises an oxidation tank, wherein a solution to be oxidized is stored in the oxidation tank, an aeration pipe is arranged at the bottom of the oxidation tank, aeration holes which are uniformly distributed are arranged at the bottom of the aeration pipe, a plurality of layers of separation screen plates which are uniformly distributed are arranged in the oxidation tank at the upper end of the aeration pipe, stirring balls are filled between the upper and lower adjacent separation screen plates, a stirring rod is arranged in the middle of the oxidation tank, the stirring rod is movably inserted in the middle of the separation screen plates, a plurality of fixedly connected stirring support rods are arranged on the stirring rod between the separation screen plates, a heating tank is arranged in the middle of the stirring rod, a plurality of heating pipes are arranged in the heating tank, a plurality of communicating grooves are arranged on the stirring rod outside the heating tank, fixedly connected separation nets are arranged outside the communicating grooves, a fixedly connected connecting rod is arranged at the upper end of the stirring rod, the utility model discloses a solar energy water heater, including oxidation tank, connecting rod end connection, agitator motor, feed inlet, aeration fan, honeycomb duct, oxidation tank upper end is equipped with agitator motor, agitator motor output passes through chain and connecting rod end connection, oxidation tank upper end one side is equipped with the feed inlet, and oxidation tank upper end opposite side is equipped with the condensation back flow that is linked together, oxidation tank one side is equipped with aeration fan, aeration fan inlet end is equipped with the intake pipe that is linked together, and aeration fan exhaust end is equipped with the honeycomb duct that is linked together, the honeycomb.
2. The efficient and energy-saving benzoic acid oxidizing device according to claim 1, wherein: the stirring ball is made of inert materials with the density close to that of the solution in the oxidation tank, the filling density of the stirring ball is not more than 50% of the filling volume, and the aperture of the mesh of the separation screen plate is smaller than the particle size of the stirring ball.
3. The efficient and energy-saving benzoic acid oxidizing device according to claim 1, wherein: the stirring struts positioned between the upper and lower adjacent separation mesh plates are distributed in a vertically staggered manner.
4. The efficient and energy-saving benzoic acid oxidizing device according to claim 1, wherein: the aeration pipe is formed by mutually communicating a plurality of circular ring-shaped pipe bodies with decreasing diameters, a plurality of fixing blocks are arranged on the outer side of the aeration pipe, and the outer side of each fixing block is fixedly connected with the inner wall of the oxidation tank.
5. The efficient and energy-saving benzoic acid oxidizing device according to claim 1, wherein: the stirring rod and the stirring support rod are made of metal materials with good heat conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911225957.5A CN110743483A (en) | 2019-12-04 | 2019-12-04 | Energy-efficient benzoic acid oxidation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911225957.5A CN110743483A (en) | 2019-12-04 | 2019-12-04 | Energy-efficient benzoic acid oxidation unit |
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| Publication Number | Publication Date |
|---|---|
| CN110743483A true CN110743483A (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911225957.5A Pending CN110743483A (en) | 2019-12-04 | 2019-12-04 | Energy-efficient benzoic acid oxidation unit |
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| Country | Link |
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| CN (1) | CN110743483A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113788561A (en) * | 2021-09-18 | 2021-12-14 | 新兴铸管股份有限公司 | Wastewater treatment system |
| CN114436391A (en) * | 2020-11-02 | 2022-05-06 | 中国石油化工股份有限公司 | Waste water treatment oxidation tank |
| CN114956418A (en) * | 2022-04-22 | 2022-08-30 | 逸辰环保科技(厦门)有限公司 | Desulfurization waste liquid treatment method and treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114436391A (en) * | 2020-11-02 | 2022-05-06 | 中国石油化工股份有限公司 | Waste water treatment oxidation tank |
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| CN114956418A (en) * | 2022-04-22 | 2022-08-30 | 逸辰环保科技(厦门)有限公司 | Desulfurization waste liquid treatment method and treatment system |
| CN114956418B (en) * | 2022-04-22 | 2024-06-04 | 逸辰环保科技(厦门)有限公司 | Desulfurization waste liquid treatment method and treatment system |
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