CN112266316A - Dibromopropane recovery process and recovery equipment thereof - Google Patents
Dibromopropane recovery process and recovery equipment thereof Download PDFInfo
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- CN112266316A CN112266316A CN202011176240.9A CN202011176240A CN112266316A CN 112266316 A CN112266316 A CN 112266316A CN 202011176240 A CN202011176240 A CN 202011176240A CN 112266316 A CN112266316 A CN 112266316A
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- feeding
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- dibromopropane
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- 238000011084 recovery Methods 0.000 title claims abstract description 115
- ATWLRNODAYAMQS-UHFFFAOYSA-N 1,1-dibromopropane Chemical compound CCC(Br)Br ATWLRNODAYAMQS-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 75
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims abstract description 74
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000013043 chemical agent Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 10
- XSQHUYDRSDBCHN-UHFFFAOYSA-N 2,3-dimethyl-2-propan-2-ylbutanenitrile Chemical compound CC(C)C(C)(C#N)C(C)C XSQHUYDRSDBCHN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- PBARJOQXHJCTKK-UHFFFAOYSA-L disodium;dibromide Chemical compound [Na+].[Na+].[Br-].[Br-] PBARJOQXHJCTKK-UHFFFAOYSA-L 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 17
- 238000005485 electric heating Methods 0.000 claims description 11
- 238000004064 recycling Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000007795 chemical reaction product Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XFNJYAKDBJUJAJ-UHFFFAOYSA-N 1,2-dibromopropane Chemical compound CC(Br)CBr XFNJYAKDBJUJAJ-UHFFFAOYSA-N 0.000 description 1
- NAMYKGVDVNBCFQ-UHFFFAOYSA-N 2-bromopropane Chemical compound CC(C)Br NAMYKGVDVNBCFQ-UHFFFAOYSA-N 0.000 description 1
- 230000029936 alkylation Effects 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- ODZPKZBBUMBTMG-UHFFFAOYSA-N sodium amide Chemical compound [NH2-].[Na+] ODZPKZBBUMBTMG-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/16—Preparation of halogenated hydrocarbons by replacement by halogens of hydroxyl 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- 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
-
- 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
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
- B01J4/007—Feed or outlet devices as such, e.g. feeding tubes provided with moving parts
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
-
- 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
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
-
- 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
- B01J2219/00132—Controlling the temperature using electric heating or cooling elements
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a dibromopropane recovery process and recovery equipment thereof, wherein sodium bromide solution generated in the production of 2, 2-diisopropylpropionitrile is subjected to spin filtration to obtain sodium bromide solid, the sodium bromide solid is crushed to obtain sodium bromide powder, the recovery equipment is used for recovering sodium dibromide, the sodium bromide powder is added into a recovery tank in a fixed frame through feeding pipes, and isopropanol and concentrated sulfuric acid are respectively added into two material pipes in a feeding box through two feeding pipes fixed on one side of the two feeding boxes. According to the dibromopropane recovery process and the dibromopropane recovery equipment, the automatic dibromopropane recovery operation can be realized through the recovery equipment, when a chemical agent is added, the addition amount of the chemical agent can be accurately controlled by controlling the motion stroke of the output shaft of the servo electric cylinder, so that the dibromopropane recovery rate is improved, the recovery equipment is simple to operate, and the dibromopropane recovery efficiency is further improved.
Description
Technical Field
The invention relates to the technical field of fine chemical engineering, in particular to a dibromopropane recovery process and a dibromopropane recovery device.
Background
1, 2-dibromopropane is a colorless to yellow liquid, has a melting point of-55.2 ℃, a boiling point of 140 ℃ and 142 ℃, and a saturated vapor pressure of 1.33kPa (35.7 ℃), is insoluble in water, is soluble in ethanol, ether, acetone and chloroform, and is generally used as an organic synthesis raw material, a chemical reagent and a solvent.
The production route of the 2, 2-diisopropyl propionitrile takes sodium amide, propionitrile and 2-bromopropane as raw materials, methyl tert-butyl ether is taken as a solvent, 2-diisopropyl propionitrile is obtained by alkylation, meanwhile, the byproduct sodium bromide is obtained, but the byproduct sodium bromide causes huge pressure on sewage treatment, so that dibromopropane in the sodium bromide needs to be recycled, the huge pressure of the sodium bromide on sewage treatment is reduced, meanwhile, the resource can be recycled, but the existing dibromopropane recovery equipment is still imperfect, the automatic recovery of dibromopropane cannot be realized, the recovery equipment is complex in operation, the recovery efficiency of dibromopropane is reduced, and technical personnel in the field provide a dibromopropane recovery process and recovery equipment thereof to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a dibromopropane recovery process and a dibromopropane recovery device thereof, and solves the problems that the existing dibromopropane recovery device is not complete, cannot realize the automatic recovery of dibromopropane, and is relatively complex in operation, so that the dibromopropane recovery efficiency is reduced.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a dibromopropane recovery process specifically comprises the following steps:
firstly, carrying out spin filtration on a sodium bromide solution generated in the production of 2, 2-diisopropyl propionitrile to obtain a sodium bromide solid, crushing the sodium bromide solid to obtain sodium bromide powder, and recycling sodium dibromide by using recycling equipment;
step two, adding sodium bromide powder into a recovery tank in the fixing frame through a feeding pipe, closing a valve in the feeding pipe after all the sodium bromide powder is added into the recovery tank, respectively adding isopropanol and concentrated sulfuric acid into two material pipes in the feeding box through two feeding pipes fixed on one side of the two feeding boxes, and then closing the valve in the feeding pipe;
and step three, starting a driving motor switch, driving a stirring frame in the recovery tank to rotate by utilizing the rotation of an output shaft of the driving motor, simultaneously starting a servo electric cylinder switch in the feeding assembly, extending out by utilizing a servo electric cylinder driving shaft, pushing a piston to move downwards in the material pipe, pushing a chemical agent in the material pipe into a material guide pipe by utilizing the piston, enabling the chemical agent to enter the recovery tank through the material guide pipe, opening an annular electric heating wire switch in an inner cavity after the addition of isopropanol and concentrated sulfuric acid in the recovery tank is completed, heating the interior of the recovery tank by utilizing the annular electric heating wire, controlling the temperature in the recovery tank to be 60-70 ℃, and finally performing constant-temperature mixing stirring on a mixture in the recovery tank by utilizing the stirring frame to obtain a reaction product dibromopropane.
The dibromopropane recovery equipment comprises a fixing frame and a recovery tank, wherein the top of the fixing frame is fixedly connected with a top plate, the recovery tank is positioned below the top plate, the top of the recovery tank is clamped with a tank cover, the bottom of the top plate is fixedly connected with a connecting block, the bottom of the connecting block is fixedly connected with the top of the tank cover, and feeding assemblies are arranged on two sides inside the top plate;
the feeding assembly comprises a feeding box, the surface of the feeding box is fixedly connected with the inside of the top plate, a fixing groove is arranged inside the feeding box, a material pipe is fixedly connected inside the fixed groove, a material feeding pipe is fixedly connected with one side of the feeding box, one end of the feed pipe penetrates through the feeding box and the material pipe and extends into the material pipe, a piston is connected above the interior of the material pipe in a sliding manner, the piston is positioned above the material pipe, the top of the feeding box is fixedly connected with a servo electric cylinder, one end of a driving shaft of the servo electric cylinder penetrates through the feeding box and the material pipe and extends into the material pipe, and one end of the servo electric cylinder driving shaft extending into the material feeding pipe is fixedly connected with the top of the piston, the bottom of the material feeding box is fixedly connected with a material feeding pipe, the top of passage runs through batch charging case and material pipe and extends to the inside of material pipe, and the bottom of passage runs through the inside of retrieving the jar and extending to retrieving the jar.
Preferably, the top fixedly connected with driving motor of roof, and the one end of driving motor output shaft run through roof, connecting block and cover and extend to the inside of retrieving the jar, the one end that the driving motor output shaft extended to retrieving jar inside passes through shaft coupling fixedly connected with agitator.
Preferably, the top of the tank cover is fixedly connected with a feeding pipe, and the interior of the feeding pipe is communicated with the interior of the recovery tank.
Preferably, the bottom of the recovery tank is fixedly connected with a discharge pipe, and the interior of the discharge pipe is communicated with the interior of the recovery tank.
Preferably, an inner cavity is formed in the recycling tank, and an annular heating wire is fixedly connected to the inner part of the inner cavity.
Preferably, an arc-shaped groove is formed in the circumferential surface of the piston, and a sealing ring is fixedly connected inside the arc-shaped groove.
Preferably, the material pipe is located the inside of throwing the workbin and is provided with two, the inside of inlet pipe and discharging pipe all is provided with the valve.
(III) advantageous effects
The invention provides a dibromopropane recovery process and a dibromopropane recovery device. Compared with the prior art, the method has the following beneficial effects:
the dibromopropane recovery process and the recovery equipment thereof are characterized in that sodium bromide powder is added into a recovery tank in a fixed frame through a feeding pipe, after all the sodium bromide powder is added into the recovery tank, a valve in the feeding pipe is closed, isopropanol and concentrated sulfuric acid are respectively added into two material pipes in the feeding box through two feeding pipes fixed on one side of the two feeding boxes, then the valve in the feeding pipe is closed, a driving motor switch is started, a stirring frame in the recovery tank is driven to rotate by the rotation of an output shaft of the driving motor, a servo electric cylinder switch in a feeding assembly is started at the same time, a servo electric cylinder driving shaft extends out to push a piston to move downwards in the material pipes, a chemical agent in the material pipes is pushed into the material guiding pipes by the piston, the chemical agent enters the recovery tank through the material guiding pipes, and the movement stroke of the servo electric cylinder driving shaft in the material pipes is controlled, the method has the advantages that the chemical agent adding amount is accurately controlled, after the addition of isopropanol and concentrated sulfuric acid in a recovery tank is completed, an annular electric heating wire switch in the inner cavity is opened, the temperature inside the recovery tank is raised by using the annular electric heating wire, the temperature inside the recovery tank is controlled to be 60-70 ℃, and finally, the mixture in the recovery tank is subjected to constant-temperature mixing and stirring by using a stirring frame to obtain a reaction product dibromopropane.
Drawings
FIG. 1 is a schematic diagram of the structure of a dibromopropane recovery apparatus of the invention;
FIG. 2 is a front view of the structure of a dibromopropane recovery apparatus of the invention;
FIG. 3 is a cross-sectional view of the structure of the feeding assembly of the present invention;
FIG. 4 is a bottom view of the internal structure of the recovery tank of the present invention;
fig. 5 is a schematic view of the piston structure of the present invention.
In the figure, 1, a feeding component; 101. a feeding box; 102. fixing grooves; 103. a material pipe; 104. a piston; 105. a servo electric cylinder; 106. a feed pipe; 107. a material guide pipe; 2. a fixed mount; 3. a recovery tank; 4. a top plate; 5. a can lid; 6. connecting blocks; 7. a drive motor; 8. a feeding pipe; 9. a discharge pipe; 10. an inner cavity; 11. an annular heating wire; 12. an arc-shaped slot; 13. and (5) sealing rings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-5, a dibromopropane recovery process specifically comprises the following steps:
firstly, carrying out spin filtration on a sodium bromide solution generated in the production of 2, 2-diisopropyl propionitrile to obtain a sodium bromide solid, crushing the sodium bromide solid to obtain sodium bromide powder, and recycling sodium dibromide by using recycling equipment;
step two, adding sodium bromide powder into the recovery tank 3 in the fixed frame 2 through the feeding pipe 8, closing a valve in the feeding pipe 8 after all the sodium bromide powder is added into the recovery tank 3, respectively adding isopropanol and concentrated sulfuric acid into two material pipes 103 in the feeding box 101 through two feeding pipes 106 fixed on one side of the two feeding boxes 101, and then closing the valve in the feeding pipes 106;
step three, starting a switch of a driving motor 7, driving a stirring frame in the recovery tank 3 to rotate by utilizing the rotation of an output shaft of the driving motor 7, simultaneously starting a switch of a servo electric cylinder 105 in the feeding assembly 1, extending out by utilizing a driving shaft of the servo electric cylinder 105, pushing a piston 104 to move downwards in the material pipe 103, pushing a chemical agent in the material pipe 103 into a material guide pipe 107 by utilizing the piston 104, enabling the chemical agent to enter the recovery tank 3 through the material guide pipe 107, realizing the accurate control of the chemical agent feeding amount by controlling the movement stroke of the driving shaft of the servo electric cylinder 105 in the material pipe 103, opening a switch of an annular electric heating wire 11 in an inner cavity 10 after finishing the addition of the isopropanol and the concentrated sulfuric acid in the recovery tank 3, heating the interior of the recovery tank 3 by utilizing the annular electric heating wire 11, controlling the temperature in the recovery tank 3 to be 60 ℃, and finally carrying out the constant-temperature mixing and stirring on the mixture in the recovery tank 3 by, obtain the reaction product dibromopropane.
Example 2
Referring to fig. 1-5, a dibromopropane recovery process specifically comprises the following steps:
firstly, carrying out spin filtration on a sodium bromide solution generated in the production of 2, 2-diisopropyl propionitrile to obtain a sodium bromide solid, crushing the sodium bromide solid to obtain sodium bromide powder, and recycling sodium dibromide by using recycling equipment;
step two, adding sodium bromide powder into the recovery tank 3 in the fixed frame 2 through the feeding pipe 8, closing a valve in the feeding pipe 8 after all the sodium bromide powder is added into the recovery tank 3, respectively adding isopropanol and concentrated sulfuric acid into two material pipes 103 in the feeding box 101 through two feeding pipes 106 fixed on one side of the two feeding boxes 101, and then closing the valve in the feeding pipes 106;
step three, starting a switch of a driving motor 7, driving a stirring frame in the recovery tank 3 to rotate by utilizing the rotation of an output shaft of the driving motor 7, simultaneously starting a switch of a servo electric cylinder 105 in the feeding assembly 1, extending out by utilizing a driving shaft of the servo electric cylinder 105, pushing a piston 104 to move downwards in the material pipe 103, pushing a chemical agent in the material pipe 103 into a material guide pipe 107 by utilizing the piston 104, enabling the chemical agent to enter the recovery tank 3 through the material guide pipe 107, realizing the accurate control of the chemical agent feeding amount by controlling the movement stroke of the driving shaft of the servo electric cylinder 105 in the material pipe 103, opening a switch of an annular electric heating wire 11 in an inner cavity 10 after finishing the addition of the isopropanol and the concentrated sulfuric acid in the recovery tank 3, heating the interior of the recovery tank 3 by utilizing the annular electric heating wire 11, controlling the temperature in the recovery tank 3 to be 70 ℃, and finally carrying out constant-temperature mixing and stirring on the mixture in the recovery tank 3 by utilizing, obtain the reaction product dibromopropane.
Referring to fig. 1-5, a dibromopropane recovery device comprises a fixed frame 2 and a recovery tank 3, wherein the top of the fixed frame 2 is fixedly connected with a top plate 4, the recovery tank 3 is positioned below the top plate 4, the top of the recovery tank 3 is clamped with a tank cover 5, the top of the tank cover 5 is fixedly connected with a feeding pipe 8, the feeding pipe 8 is communicated with the interior of the recovery tank 3, the bottom of the top plate 4 is fixedly connected with a connecting block 6, the bottom of the connecting block 6 is fixedly connected with the top of the tank cover 5, and feeding assemblies 1 are arranged on two sides of the interior of the top plate 4;
the feeding assembly 1 comprises a feeding box 101, the surface of the feeding box 101 is fixedly connected with the inside of a top plate 4, a fixing groove 102 is formed in the feeding box 101, a material pipe 103 is fixedly connected to the inside of the fixing groove 102, a feeding pipe 106 is fixedly connected to one side of the feeding box 101, one end of the feeding pipe 106 penetrates through the feeding box 101 and the material pipe 103 and extends to the inside of the material pipe 103, a piston 104 is slidably connected to the upper portion of the inside of the material pipe 103, an arc-shaped groove 12 is formed in the peripheral surface of the piston 104, a sealing ring 13 is fixedly connected to the inside of the arc-shaped groove 12, the piston 104 is positioned above the material pipe 103, a servo electric cylinder 105 is fixedly connected to the top of the feeding box 101, one end of a driving shaft of the servo electric cylinder 105 penetrates through the feeding box 101 and the material pipe 103 and extends to the inside of the material pipe 103, one end of the driving shaft of the servo electric cylinder 105, which extends, the top end of the material guiding pipe 107 penetrates through the material feeding box 101 and the material pipe 103 and extends to the interior of the material pipe 103, and the bottom end of the material guiding pipe 107 penetrates through the recovery tank 3 and extends to the interior of the recovery tank 3.
Top fixedly connected with driving motor 7 of roof 4, and the one end of driving motor 7 output shaft runs through roof 4, connecting block 6 and cover 5 and extends to the inside of retrieving jar 3, and shaft coupling fixedly connected with stirring frame is passed through to the one end that driving motor 7 output shaft extended to retrieving jar 3 inside.
Retrieve the bottom fixedly connected with discharging pipe 9 of jar 3, and the inside of discharging pipe 9 and the inside intercommunication of retrieving jar 3, retrieve the inside of jar 3 and seted up inner chamber 10, and the inside fixedly connected with annular heating wire 11 of inner chamber 10.
Two material pipes 103 are arranged inside the feeding box 101, and valves are arranged inside the feeding pipe 106 and the discharging pipe 9.
And those not described in detail in this specification are well within the skill of those in the art.
The working principle is that when in use, sodium bromide powder is added into the recovery tank 3 in the fixed frame 2 through the feeding pipe 8, after all the sodium bromide powder is added into the recovery tank 3, a valve in the feeding pipe 8 is closed, isopropanol and concentrated sulfuric acid are respectively added into two material pipes 103 in the feeding box 101 through two feeding pipes 106 fixed on one side of the two feeding boxes 101, then the valve in the feeding pipe 106 is closed, a driving motor 7 is started to be switched, a stirring frame in the recovery tank 3 is driven to rotate by the rotation of an output shaft of the driving motor 7, a servo electric cylinder 105 in the feeding assembly 1 is started to be switched, a driving shaft of the servo electric cylinder 105 is used for extending out, a piston 104 is pushed to move downwards in the material pipe 103, a chemical agent in the material pipe 103 is pushed into a material guiding pipe 107 by the piston 104, the chemical agent enters the recovery tank 3 through the material guiding pipe 107, and the movement stroke of the driving shaft of the servo electric cylinder 105 in the material pipe 103 is, the adding amount of the chemical agent is accurately controlled, after the isopropanol and the concentrated sulfuric acid are added into the recovery tank 3, the switch of the annular heating wire 11 in the inner cavity 10 is turned on, the temperature inside the recovery tank 3 is raised by using the annular heating wire 11, the temperature inside the recovery tank 3 is controlled to be 60-70 ℃, and finally the mixture in the recovery tank 3 is mixed and stirred at constant temperature by using the stirring frame to obtain a reaction product dibromopropane.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A dibromopropane recovery process is characterized in that: the method specifically comprises the following steps:
firstly, carrying out spin filtration on a sodium bromide solution generated in the production of 2, 2-diisopropyl propionitrile to obtain a sodium bromide solid, crushing the sodium bromide solid to obtain sodium bromide powder, and recycling sodium dibromide by using recycling equipment;
step two, adding sodium bromide powder into a recovery tank (3) in a fixed frame (2) through a feeding pipe (8), closing a valve in the feeding pipe (8) after all the sodium bromide powder is added into the recovery tank (3), respectively adding isopropanol and concentrated sulfuric acid into two material pipes (103) in two feeding boxes (101) through two feeding pipes (106) fixed on one sides of the two feeding boxes (101), and then closing the valve in the feeding pipes (106);
step three, starting a switch of a driving motor (7), driving a stirring frame in the recovery tank (3) to rotate by utilizing the rotation of an output shaft of the driving motor (7), simultaneously starting a switch of a servo electric cylinder (105) in the feeding assembly (1), extending out by utilizing a driving shaft of the servo electric cylinder (105), pushing a piston (104) to move downwards in a material pipe (103), pushing a chemical agent in the material pipe (103) into a material guide pipe (107) by utilizing the piston (104), enabling the chemical agent to enter the recovery tank (3) through the material guide pipe (107), opening a switch of an annular electric heating wire (11) in an inner cavity (10) after the addition of isopropanol and concentrated sulfuric acid in the recovery tank (3) is completed, heating the interior of the recovery tank (3) by utilizing the annular electric heating wire (11), controlling the temperature in the recovery tank (3) to be 60-70 ℃, and finally mixing and stirring the mixture in the recovery tank (3) at constant temperature by utilizing the stirring frame, obtain the reaction product dibromopropane.
2. The utility model provides a dibromopropane recovery plant, includes mount (2) and recovery tank (3), its characterized in that: the top of the fixed frame (2) is fixedly connected with a top plate (4), the recovery tank (3) is positioned below the top plate (4), the top of the recovery tank (3) is clamped with a tank cover (5), the bottom of the top plate (4) is fixedly connected with a connecting block (6), the bottom of the connecting block (6) is fixedly connected with the top of the tank cover (5), and feeding assemblies (1) are arranged on two sides of the interior of the top plate (4);
the feeding assembly (1) comprises a feeding box (101), the surface of the feeding box (101) is fixedly connected with the inside of a top plate (4), a fixing groove (102) is formed in the feeding box (101), a material pipe (103) is fixedly connected to the inside of the fixing groove (102), a feeding pipe (106) is fixedly connected to one side of the feeding box (101), one end of the feeding pipe (106) penetrates through the feeding box (101) and the material pipe (103) and extends to the inside of the material pipe (103), a piston (104) is slidably connected to the upper portion of the inside of the material pipe (103), the piston (104) is located above the material pipe (103), a servo electric cylinder (105) is fixedly connected to the top of the feeding box (101), one end of a driving shaft of the servo electric cylinder (105) penetrates through the feeding box (101) and the material pipe (103) and extends to the inside of the material pipe (103), and one end of the driving shaft of the servo electric cylinder (105) extending to the inside of the material pipe (103) is fixedly connected to, the bottom fixedly connected with passage (107) of feeding case (101), the top of passage (107) runs through feeding case (101) and material pipe (103) and extends to the inside of material pipe (103), and the bottom of passage (107) runs through recovery tank (3) and extends to the inside of recovery tank (3).
3. The dibromopropane recovery plant of claim 2, which is characterized in that: the top fixedly connected with driving motor (7) of roof (4), and the one end of driving motor (7) output shaft runs through roof (4), connecting block (6) and cover (5) and extends to the inside of retrieving jar (3), shaft coupling fixedly connected with stirring frame is passed through to the one end that driving motor (7) output shaft extended to retrieve jar (3) inside.
4. The dibromopropane recovery plant of claim 2, which is characterized in that: the top of the tank cover (5) is fixedly connected with a feeding pipe (8), and the interior of the feeding pipe (8) is communicated with the interior of the recovery tank (3).
5. The dibromopropane recovery plant of claim 2, which is characterized in that: the bottom fixedly connected with discharging pipe (9) of retrieving jar (3), and the inside of discharging pipe (9) and the inside intercommunication of retrieving jar (3).
6. The dibromopropane recovery plant of claim 2, which is characterized in that: an inner cavity (10) is formed in the recycling tank (3), and an annular electric heating wire (11) is fixedly connected to the inner portion of the inner cavity (10).
7. The dibromopropane recovery plant of claim 2, which is characterized in that: the periphery of the piston (104) is provided with an arc-shaped groove (12), and a sealing ring (13) is fixedly connected inside the arc-shaped groove (12).
8. The dibromopropane recovery plant of claim 5, which is characterized in that: the material pipe (103) is located the inside of batch charging case (101) and is provided with two, the inside of inlet pipe (106) and discharging pipe (9) all is provided with the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011176240.9A CN112266316A (en) | 2020-10-28 | 2020-10-28 | Dibromopropane recovery process and recovery equipment thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011176240.9A CN112266316A (en) | 2020-10-28 | 2020-10-28 | Dibromopropane recovery process and recovery equipment thereof |
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| CN112266316A true CN112266316A (en) | 2021-01-26 |
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| CN202011176240.9A Pending CN112266316A (en) | 2020-10-28 | 2020-10-28 | Dibromopropane recovery process and recovery equipment thereof |
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| FR2428463A1 (en) * | 1978-06-15 | 1980-01-11 | Le Prevost Jacques | Reactor for organic carbonate, esp. di:allyl glycol carbonate prepn. - with removable bottom allowing transfer of reaction medium into vessel placed underneath |
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Application publication date: 20210126 |