CN203342813U - Novel efficient and energy-saving adipic acid oxidation reactor - Google Patents
Novel efficient and energy-saving adipic acid oxidation reactor Download PDFInfo
- Publication number
- CN203342813U CN203342813U CN2013202818970U CN201320281897U CN203342813U CN 203342813 U CN203342813 U CN 203342813U CN 2013202818970 U CN2013202818970 U CN 2013202818970U CN 201320281897 U CN201320281897 U CN 201320281897U CN 203342813 U CN203342813 U CN 203342813U
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- reactor
- heat pipe
- reactor shell
- alcohol ketone
- adipic acid
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- 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
Abstract
The utility model relates to a novel efficient and energy-saving adipic acid oxidation reactor which comprises a reactor casing, an acid oxidation inlet, a reactant outlet, a stirrer motor, a stirring support, a stirring shaft, an alcohol ketone feeding liquid-distribution device and a helical blade, wherein the alcohol ketone feeding liquid-distribution device is arranged at the lower part in a reactor casing. With the adoption of the technical scheme, an alcohol ketone discharging port is formed in the lower part in the reactor casing; under the action of the alcohol ketone feeding liquid-distribution device, an all-capacity steady reaction is realized, and scaling is effectively avoided; a heat removing interlayer is arranged on the reactor casing; two rows of heat removing pipes are arranged in the reactor, so that the temperature of the reactor can be controlled more easily, and stopping caused by device fluctuation is effectively avoided; the helical blade is arranged on a stirrer, so that the reactor disturbs radially and axially; and under the condition of the same capacity, the rotation torque is greatly reduced, and the power is reduced by 30%. With the adoption of the technical scheme, the production efficiency and the working efficiency are effectively improved, and the novel efficient energy-saving adipic acid oxidation reactor is safe and reliable.
Description
Technical field
The utility model relates to a kind of oxidation reactor, particularly relates to the novel high-efficiency and energy-saving adipic acid oxidation reactor that a kind of employing oxidisability red fuming nitric acid (RFNA) (53%) oxidation alcohol alcohol/ketone mixtures (cyclohexanol 55%, cyclohexanone 45%) prepares adipic acid.
Background technology
Adipic acid is white monoclinic crystal at normal temperatures, and fusing point is 152 ℃, and boiling point is 337.5 ℃, and relative density is 1.366, is soluble in ethanol, ether or acetone and other organic solvent, and is slightly soluble in water; Adipic acid is mainly used to produce nylon 66 salt, and the further polycondensation of nylon 66 can obtain nylon 66 resin; Hexanedioic acid also is applied to the polyurethane industry as the raw material of PEPA; The 1:1 mixture of cyclohexanol and cyclohexanone, make adipic acid through 53% nitric acid oxidation, reaction is to carry out in liquid phase, make catalyst with the salpeter solution of copper, vanadium, oxidation liquid obtains the adipic acid finished product through follow-up crystallization, thickening, the operation such as centrifugal, dry, in addition, the mixture that also has nitrogen oxide gas.
The composite type of key reaction
Cu、V
10C6H11OH + 18HNO3 ——→ 10HOOC(CH2)4COOH + 5N2O
+ 4N2 + 19H2O
This installs most crucial equipment is oxidation reactor, the technique of comparative maturity is 6 stills for air blowing centralized arrangement in parallel at present, is oxidized to strong exothermal reaction, must adopt cooling water to remove heat, for guaranteeing post crystallization operation and final product quality, 6 reactors must carry out strict temperature and control.
The problems such as shown in Figure 1, adipic acid oxidation reactor of the prior art mainly exists that device capbility is little, reactor agitator power is large, shaft easy fracture, reactor are removed the heat difficulty, temperature is wayward, reactor wall crystallization stammerer.
The utility model content
In view of this, main purpose of the present utility model is to provide a kind of novel high-efficiency and energy-saving adipic acid oxidation reactor, pass through the technical program, by traditional frame type stirring, changing high-efficiency axial flow into stirs, make reaction more even, reaction time shortens, power of agitator declines to a great extent 30%, effectively stopped the situation of shaft fracture, and by the charging that liquidates of reactor both sides pipe laying, change the circular vertical charging in bottom into, make reaction more steady, effectively reduce the generation of wall crystallization, the clear scar cycle of device was reached more than 6 months, the long period efficient stable operation of real implement device.
In order to achieve the above object, the technical solution of the utility model is achieved in that a kind of novel high-efficiency and energy-saving adipic acid oxidation reactor, include reactor shell, the oxidizing acid entrance, the reactant outlet, agitator motor, stir bearing and shaft, described stirring bearing is arranged on the reactor shell central upper outside, described agitator motor is arranged on the top of stirring bearing, described shaft is arranged on and stirs on bearing, the upper end of shaft is connected with agitator motor, the lower end of shaft extend in reactor shell, described oxidizing acid entrance and reactant outlet are separately positioned on the outside on reactor shell top, also include alcohol ketone charging liquid distributor and helical blade, described alcohol ketone charging liquid distributor is arranged on the bottom in reactor shell, described alcohol ketone charging liquid distributor is by the cross tube connector, two annular discharging circles and alcohol ketone charging aperture form, described alcohol ketone charging aperture is on two both sides sidewalls that are separately positioned on the reactor shell bottom, the corresponding two ends of described cross tube connector are connected with two alcohol ketone charging apertures respectively, two annular discharging circles are arranged on the cross tube connector with one heart, and with the cross tube connector, be connected respectively, be evenly distributed with some alcohol ketone discharging openings on the arc-shaped surface of two annular discharging circles, described helical blade is arranged on the shaft in reactor shell.
Also include and remove heat pipe, remove the heat pipe water inlet and remove the heat pipe delivery port, the described heat pipe of removing is two groups and is inside and outside shape and is arranged in reactor shell, remove heat pipe helical arrangement from top to bottom, describedly remove the heat pipe water inlet and remove on the upper end lateral surface that the heat pipe delivery port is separately positioned on reactor shell.
The described heat pipe water inlet of removing is connected with the heat pipe of removing of helical arrangement in bottom, and the described heat pipe delivery port of removing is connected with the heat pipe of removing of helical arrangement in upper end.
Be provided with on described reactor shell and remove hot interlayer, be respectively arranged with interlayer water inlet and interlayer delivery port on the bottom of described reactor shell and side, described interlayer water inlet and interlayer delivery port respectively with remove hot interlayer and be connected.
Described helical blade is three, is positioned at the below that the helical blade of below is arranged on two annular discharging circles.
Described reactor shell bottom is taper, in the middle of the reactor shell bottom, is provided with discharging hole.
Beneficial effect after the employing technique scheme is: a kind of novel high-efficiency and energy-saving adipic acid oxidation reactor, pass through the technical program, 1 alcohol ketone discharging opening is arranged on the bottom in reactor shell, and under the effect of alcohol ketone charging liquid distributor, realize the total volume smooth reaction, effectively avoid the generation scabbed; Arrange and remove hot interlayer on 2 reactor shell, at inside reactor, way double-line is set and removes heat pipe, temperature of reactor is controlled and be more prone to, the parking of effectively avoiding the device fluctuation to cause; 3 arrange helical blade on agitator, make the radial and axial disturbance of reactor, in identical production capacity situation, greatly reduce driving torque, make power descend 30%; 4 application the technical program, effectively boost productivity and operating efficiency, safe and reliable.
The accompanying drawing explanation
The structure chart that Fig. 1 is adipic acid oxidation reactor of the prior art.
Fig. 2 is overall structure schematic diagram of the present utility model.
The top view that Fig. 3 is Fig. 2.
Fig. 4 be in Fig. 2 A-A to cutaway view.
In figure, 1 reactor shell, 2 oxidizing acid entrances, 3 reactant outlets, 4 agitator motor, 5 stir bearings, 6 shafts, 7 alcohol ketone charging liquid distributors, 8 helical blades, 9 cross tube connectors, 10 annular discharging circles, 11 alcohol ketone charging apertures, 12 alcohol ketone discharging openings, 13 and remove heat pipe, 14 and remove heat pipe water inlet, 15 and remove heat pipe delivery port, 16 and remove hot interlayer, 17 interlayer water inlets, 18 interlayer delivery ports, 19 discharging holes.
The specific embodiment
Below in conjunction with accompanying drawing, specific embodiment in the utility model is described in further detail.
As shown in Figures 2 and 3, the novel high-efficiency and energy-saving adipic acid oxidation reactor that the utility model relates to, include reactor shell 1, oxidizing acid entrance 2, reactant outlet 3, agitator motor 4, stir bearing 5 and shaft 6, described stirring bearing 5 is arranged on the reactor enclosure 1 central upper outside, described agitator motor 4 is arranged on the top of stirring bearing 5, described shaft 6 is arranged on and stirs on bearing 5, the upper end of shaft 6 is connected with agitator motor 4, the lower end of shaft 6 extend in reactor shell 1, described oxidizing acid entrance 2 and reactant outlet 3 are separately positioned on the outside on reactor shell 1 top, also include alcohol ketone charging liquid distributor 7 and helical blade 8, described alcohol ketone charging liquid distributor 7 is arranged on the bottom in reactor shell 1, described alcohol ketone charging liquid distributor 7 is by cross tube connector 9, two annular discharging circles 10 and alcohol ketone charging aperture 11 form, described alcohol ketone charging aperture 11 is on two both sides sidewalls that are separately positioned on reactor shell 1 bottom, the corresponding two ends of described cross tube connector 9 are connected with two alcohol ketone charging apertures 11 respectively, two annular discharging circles 10 are arranged on cross tube connector 9 with one heart, and with cross tube connector 9, be connected respectively, be evenly distributed with some alcohol ketone discharging openings 12 on the arc-shaped surface of two annular discharging circles 10, described helical blade 8 is arranged on the shaft 6 in reactor shell 1.
In further technical scheme, also include and remove heat pipe 13, remove heat pipe water inlet 14 and remove heat pipe delivery port 15, the described heat pipe 13 of removing is two groups and is inside and outside shape and is arranged in reactor shell 1, remove heat pipe 13 helical arrangement from top to bottom, describedly remove heat pipe water inlet 14 and remove on the upper end lateral surface that heat pipe delivery port 15 is separately positioned on reactor shell 1.
The described heat pipe water inlet 14 of removing is connected with the heat pipe 13 of removing of helical arrangement in bottom, and the described heat pipe delivery port 15 of removing is connected with the heat pipe 13 of removing of helical arrangement in upper end.
Be provided with and remove hot interlayer 16 on described reactor shell 1, be respectively arranged with interlayer water inlet 17 and interlayer delivery port 18 on the bottom of described reactor shell 1 and side, described interlayer water inlet 17 and interlayer delivery port 18 respectively with remove hot interlayer 16 and be connected.
Described helical blade 8 is three, is positioned at the below that the helical blade 8 of below is arranged on two annular discharging circles 10.
Described reactor shell 1 bottom is taper, in the middle of reactor shell 1 bottom, is provided with discharging hole 19.
When work, the adipic acid high efficiency reactor is mainly used in the industrialized unit that pure alcohol/ketone mixtures (45 ketone %, 55% alcohol) adopts the nitric acid oxidation reaction adipic acid, adopts the heat-obtaining mode of the inner coil pipe of external jacket, make heat-obtaining more efficient, control and more simply control the elastic range increasing; The inner stirring by traditional frame type stirring, changing high-efficiency axial flow into stirs, make reaction more even, the reaction time shortens, and power of agitator declines to a great extent 30%, effectively avoided the situation of shaft 6 fractures, the base circle discharging circle 10 vertical charging that makes progress, make reaction more steady, effectively reduces the generation of wall crystallization, reached more than 9 months, the long period efficient stable operation of real implement device in the clear scar cycle of reactor.
The above, be only better possible embodiments of the present utility model, not in order to limit protection domain of the present utility model.
Claims (6)
1. a novel high-efficiency and energy-saving adipic acid oxidation reactor, include reactor shell, the oxidizing acid entrance, the reactant outlet, agitator motor, stir bearing and shaft, described stirring bearing is arranged on the reactor shell central upper outside, described agitator motor is arranged on the top of stirring bearing, described shaft is arranged on and stirs on bearing, the upper end of shaft is connected with agitator motor, the lower end of shaft extend in reactor shell, described oxidizing acid entrance and reactant outlet are separately positioned on the outside on reactor shell top, it is characterized in that, also include alcohol ketone charging liquid distributor and helical blade, described alcohol ketone charging liquid distributor is arranged on the bottom in reactor shell, described alcohol ketone charging liquid distributor is by the cross tube connector, two annular discharging circles and alcohol ketone charging aperture form, described alcohol ketone charging aperture is on two both sides sidewalls that are separately positioned on the reactor shell bottom, the corresponding two ends of described cross tube connector are connected with two alcohol ketone charging apertures respectively, two annular discharging circles are arranged on the cross tube connector with one heart, and with the cross tube connector, be connected respectively, be evenly distributed with some alcohol ketone discharging openings on the arc-shaped surface of two annular discharging circles, described helical blade is arranged on the shaft in reactor shell.
2. novel high-efficiency and energy-saving adipic acid oxidation reactor according to claim 1, it is characterized in that, include and remove heat pipe, remove the heat pipe water inlet and remove the heat pipe delivery port, the described heat pipe of removing is two groups and is inside and outside shape and is arranged in reactor shell, remove heat pipe helical arrangement from top to bottom, describedly remove the heat pipe water inlet and remove on the upper end lateral surface that the heat pipe delivery port is separately positioned on reactor shell.
3. novel high-efficiency and energy-saving adipic acid oxidation reactor according to claim 2, is characterized in that, the described heat pipe water inlet of removing is connected with the heat pipe of removing of helical arrangement in bottom, and the described heat pipe delivery port of removing is connected with the heat pipe of removing of helical arrangement in upper end.
4. novel high-efficiency and energy-saving adipic acid oxidation reactor according to claim 1, it is characterized in that, be provided with on described reactor shell and remove hot interlayer, be respectively arranged with interlayer water inlet and interlayer delivery port on the bottom of described reactor shell and side, described interlayer water inlet and interlayer delivery port respectively with remove hot interlayer and be connected.
5. adipic acid oxidation reactor according to claim 1, is characterized in that, described helical blade is three, is positioned at the below that the helical blade of below is arranged on two annular discharging circles.
6. adipic acid oxidation reactor according to claim 1, is characterized in that, described reactor shell bottom is taper, in the middle of the reactor shell bottom, is provided with discharging hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202818970U CN203342813U (en) | 2013-05-22 | 2013-05-22 | Novel efficient and energy-saving adipic acid oxidation reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202818970U CN203342813U (en) | 2013-05-22 | 2013-05-22 | Novel efficient and energy-saving adipic acid oxidation reactor |
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| Publication Number | Publication Date |
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| CN203342813U true CN203342813U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013202818970U Expired - Lifetime CN203342813U (en) | 2013-05-22 | 2013-05-22 | Novel efficient and energy-saving adipic acid oxidation reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111389330A (en) * | 2020-03-25 | 2020-07-10 | 河南神马尼龙化工有限责任公司 | Reaction temperature stability maintaining system of adipic acid production system by nitric acid oxidation method |
-
2013
- 2013-05-22 CN CN2013202818970U patent/CN203342813U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111389330A (en) * | 2020-03-25 | 2020-07-10 | 河南神马尼龙化工有限责任公司 | Reaction temperature stability maintaining system of adipic acid production system by nitric acid oxidation method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |
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| CX01 | Expiry of patent term |