CN106732290A - A kind of reactor of continuous production nitromethane - Google Patents
A kind of reactor of continuous production nitromethane Download PDFInfo
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- CN106732290A CN106732290A CN201710055606.9A CN201710055606A CN106732290A CN 106732290 A CN106732290 A CN 106732290A CN 201710055606 A CN201710055606 A CN 201710055606A CN 106732290 A CN106732290 A CN 106732290A
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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
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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
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
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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
- B01J19/0053—Details of the reactor
- B01J19/006—Baffles
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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
- B01J19/0053—Details of the reactor
- B01J19/0073—Sealings
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/10—Preparation of nitro compounds by substitution of functional groups by nitro groups
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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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00092—Tubes
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Abstract
The present invention relates to chemical field, a kind of reactor of continuous production nitromethane is particularly disclosed.The reactor of the continuous production nitromethane, including a horizontal reactor being obliquely installed, the inner chamber of the horizontal reactor is divided into mixing temperature adjustment section cavity, conversion zone cavity and soaking zone cavity from front to back along material conveying direction, an internal heat device is respectively equipped with reaction temperature adjustment section cavity and reaction temperature descending section cavity, an external heat-exchanging device is respectively equipped with outside mixing temperature adjustment section cavity, reaction segment occurred cavity and soaking zone cavity.The reactor of the continuous production nitromethane, reaction mass is under the stirring action of gravity and agitator, reacted in flowing, reduce the back-mixing of logistics, temperature, time according to reaction rationally set the form of heat-exchanger rig, both the mixture homogeneity of material had been ensure that, reaction temperature and the time of material had been controlled again, improve the yield of product.
Description
Technical field
The present invention relates to chemical field, more particularly to a kind of reactor of continuous production nitromethane.
Background technology
Existing nitromethane production process is produced using simple reactor interval mostly, is passed through in production process
Manually to natrium nitrosum solid is put into reactor, natrium nitrosum solid is carried out instead after being dissolved in reactor with dimethyl suflfate
Should.But while dimethyl suflfate and natrium nitrosum reaction, also hydrolytic side reactions can occur with water, reduce the yield of reaction.
In production, in order to reduce the generation of side reaction, dimethyl suflfate is set fully to be reacted with natrium nitrosum, generally by way of being added dropwise
Add dimethyl suflfate, can only in batches, the operation of discontinuity, production efficiency is very low, and expends more during production
Manpower.Secondly, dimethyl suflfate and the reaction of natrium nitrosum are exothermic reaction, and substantial amounts of heat can be produced in course of reaction, make kettle
Interior temperature is quickly raised, but traditional reactor control temperature in the kettle is relatively difficult.When reaction condition control is improper, temperature is too
Low that reaction rate can be made not react even slowly very much, temperature is too high and can increase side reaction, there is larger contingency, causes
Yield is unstable.Again, the toxic gases such as nitrous acid hydrogen methyl esters can be generated in course of reaction, traditional reactor cannot be disposed properly
These toxic gases, the working environment of workman is poor, there is larger potential safety hazard.
The content of the invention
The present invention is in order to make up the deficiencies in the prior art, there is provided one kind is reasonable in design, realize continuous prodution, improve former
Material utilization rate and product yield, the reactor of the continuous production nitromethane of reduction production cost, solve and deposit in the prior art
Problem.
The present invention is achieved through the following technical solutions：
A kind of reactor of continuous production nitromethane, including a horizontal reactor being obliquely installed, in horizontal reactor
Front top higher is provided with a reaction mixture import, and being provided with a material in the relatively low rear end bottom of horizontal reactor extracts out
Mouthful, the inner chamber of the horizontal reactor is divided into mixing temperature adjustment section cavity, conversion zone chamber from front to back along material conveying direction
Body and soaking zone cavity, at the top of mixing temperature adjustment section cavity, conversion zone cavity and soaking zone cavity being respectively equipped with an exhaust puts
Eat dishes without rice or wine, the conversion zone cavity is divided into reaction temperature adjustment section cavity, reaction segment occurred chamber from front to back along material conveying direction
Body and reaction temperature descending section cavity, an internal heat device is respectively equipped with reaction temperature adjustment section cavity and reaction temperature descending section cavity,
An external heat-exchanging device is respectively equipped with outside mixing temperature adjustment section cavity, reaction segment occurred cavity and soaking zone cavity, along Horizontal counter
Answer the axis direction of device to be provided with one in horizontal reactor to occur through mixing temperature adjustment section cavity, reaction temperature adjustment section cavity, reaction
The rabbling mechanism that section cavity and reaction temperature descending section cavity are set, the front end of the rabbling mechanism passes the of horizontal reactor front end
Output shaft after one mechanical sealing base with a motor is connected, and the rear end of rabbling mechanism is supported in located at horizontal reactor rear end
In two mechanical sealing bases.
The internal heat device includes one group of internal heat exchange tubes set along horizontal reactor axis direction, internally changes
Heat pipe is respectively arranged at two ends with a fixed orifice plate set along horizontal reactor radial direction, and the two ends of the internal heat exchange tubes divide
On the fixing hole not being fixed on fixed orifice plate, the edge seal of fixed orifice plate is fixed on the inwall of horizontal reactor, in every group
An internal heat chamber is formed between the two fixation orifice plates at portion heat exchanger tube two ends, internally the bottom rear of heat exchanging chamber and front side top
It is respectively equipped with an internal heat chamber medium entrance and an internal heat chamber media outlet.
The internal heat device includes one group of internal heat exchange tubes set perpendicular to horizontal reactor axis direction, described
The side wall that the two ends of internal heat exchange tubes pass horizontal reactor respectively is set, and the lower end of internal heat exchange tubes is internal heat exchange tubes medium
Import, upper end is internal heat exchange tubes media outlet.
The external heat-exchanging device includes external heat-exchanging pipe of one group of spiral surrounding on the outside of horizontal reactor, the outside
Heat exchanger tube is the semi-circular pipe being welded on horizontal reactor lateral wall, and the bottom port of the external heat-exchanging pipe is to change outside
Heat-pipe medium import, top port is external heat-exchanging pipe media outlet.
The external heat-exchanging device includes that one is sheathed on the heat exchange jacket on the outside of horizontal reactor, the heat exchange jacket
Inner side one spiral heat exchanging chamber is separated into by a flight, be respectively equipped with one at the top of the bottom rear of heat exchange jacket and front side
External heat-exchanging pipe medium entrance and external heat-exchanging pipe media outlet.
The axis direction of the horizontal reactor and the angle of horizontal plane are 0-20 °.
The mixing temperature adjustment section cavity and soaking zone cavity are set by several along horizontal reactor radial direction respectively
Flow-stopping plate be separated into several interconnected mixed cells and heat-insulation unit.
The flow-stopping plate is the porous plate set perpendicular to horizontal reactor axis direction.
The rabbling mechanism include along horizontal reactor axis direction set an agitating shaft, mixing temperature adjustment section cavity,
Stirring vane is respectively equipped with agitating shaft in reaction segment occurred cavity and soaking zone cavity.
The quantity of the mixed cell and heat-insulation unit is respectively two, and the rabbling mechanism is included along horizontal reactor axle
The agitating shaft that line direction is set, the stirring in the heat-insulation unit and reaction segment occurred cavity of mixed cell, rear side in front side
Stirring vane is respectively equipped with axle, the stirring vane in reaction segment occurred cavity is set perpendicular to agitating shaft, the mixing list of front side
Stirring vane in the heat-insulation unit of unit and rear side is obliquely installed to material conveying direction.
The beneficial effects of the invention are as follows：The reactor of the continuous production nitromethane, horizontal reactor is using certain inclination
Angle design, and axis direction along horizontal reactor is provided with agitator, so reaction mass stirring in gravity and agitator
Under the effect of mixing, reacted in flowing, reduce the back-mixing of logistics, be conducive to improving the selectivity of target product.From sleeping
During the front end of formula reactor flows to rear end, reaction mass is stopped 20-60 minutes in horizontal reactor, reacts guarantee
Material completes mixing and course of reaction in order, realizes continuous prodution, improves production efficiency, reduces manpower and materials.
The reactor of the continuous production nitromethane, temperature, time according to reaction rationally set the form of heat-exchanger rig,
Both the mixture homogeneity of material had been ensure that, reaction temperature and the time of material had been controlled again.Mixing temperature adjustment section cavity and soaking zone
The temperature of reaction mass is not very high in cavity, therefore sets internal heat device, it is to avoid reaction mass Precipitation, influence is anti-
Should carry out.And react temperature adjustment section cavity, especially react temperature descending section cavity in reaction mass temperature it is higher, will not again because
Temperature is too low and Precipitation, so setting internal heat device, improves heat exchange efficiency.Spiral external heat-exchanging pipe or flight
Design current is passed through from horizontal reactor outer helical, eliminate cooling dead angle, improve heat exchange efficiency, improve product
Yield.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention 1；
Fig. 2 is the structural representation of the embodiment of the present invention 2；
Fig. 3 is the structural representation of the embodiment of the present invention 3；
Fig. 4 is the structural representation of the embodiment of the present invention 4.
In figure, 1, horizontal reactor, 2, reaction mixture import, 3, material outlet port, 4, mixing temperature adjustment section cavity, 5, protect
Temperature section cavity, 6, exhaust drain, 7, reaction temperature adjustment section cavity, 8, reaction segment occurred cavity, 9, reaction temperature descending section cavity, 10,
First mechanical sealing base, 11, motor, the 12, second mechanical sealing base, 13, internal heat exchange tubes, 14, fixed orifice plate, 15, heat exchange folder
Set medium entrance, 16, internal heat chamber medium entrance, 17, internal heat chamber media outlet, 18, external heat-exchanging pipe, 19, outside
Heat exchanger tube medium entrance, 20, external heat-exchanging pipe media outlet, 21, flow-stopping plate, 22, agitating shaft, 23, stirring vane, 24, heat exchange
Chuck media outlet, 25, internal heat exchange tubes medium entrance, 26, internal heat exchange tubes media outlet, 27, heat exchange jacket, 28, spiral
Piece.
Specific embodiment
For the technical characterstic for illustrating this programme can be understood, below by specific embodiment, and its accompanying drawing is combined, to this hair
It is bright to be described in detail.
Embodiment 1：
As shown in fig. 1, the embodiment continuously produces the reactor of nitromethane, including a horizontal reacting being obliquely installed
Device 1, the bottom of the horizontal reactor 1 is supported on the ground, in the front end higher of horizontal reactor 1 by some support columns
Top is provided with a reaction mixture import 2, and a material outlet port 3 is provided with the relatively low rear end bottom of horizontal reactor 1, described sleeping
The inner chamber of formula reactor 1 is divided into mixing temperature adjustment section cavity 4, conversion zone cavity and insulation from front to back along material conveying direction
Section cavity 5, an exhaust drain 6 is respectively equipped with the top of mixing temperature adjustment section cavity 4, conversion zone cavity and soaking zone cavity 5,
The conversion zone cavity is divided into reaction temperature adjustment section cavity 7, the and of reaction segment occurred cavity 8 from front to back along material conveying direction
Reaction temperature descending section cavity 9, an internal heat device is respectively equipped with reaction temperature adjustment section cavity 7 and reaction temperature descending section cavity 9,
An external heat-exchanging device is respectively equipped with outside mixing temperature adjustment section cavity 4, reaction segment occurred cavity 8 and soaking zone cavity 5, along Horizontal counter
Answer the axis direction of device 1 that one is provided with horizontal reactor 1 through mixing temperature adjustment section cavity 4, reaction temperature adjustment section cavity 7, reaction
The rabbling mechanism that segment occurred cavity 8 and reaction temperature descending section cavity 9 are set, the front end of the rabbling mechanism passes horizontal reactor 1
It is connected with the output shaft of a motor 11 after first mechanical sealing base 10 of front end, the rear end of rabbling mechanism is supported in located at Horizontal counter
Answer in the second mechanical sealing base 12 of the rear end of device 1.
The internal heat device includes one group of internal heat exchange tubes 13 set along the axis direction of horizontal reactor 1, including
Portion's heat exchanger tube 13 be respectively arranged at two ends with one along the radial direction of horizontal reactor 1 set fixed orifice plate 14, the internal heat
The two ends of pipe 13 are individually fixed on the fixing hole on fixed orifice plate 14, and the edge seal of fixed orifice plate 14 is fixed on horizontal reacting
The inwall of device 1, forms an internal heat chamber, internally heat exchanging chamber between every group of two fixation orifice plates 14 at the two ends of internal heat exchange tubes 13
Bottom rear and front side top be respectively equipped with an internal heat chamber medium entrance 16 and an internal heat chamber media outlet 17.
The external heat-exchanging device includes external heat-exchanging pipe 18 of one group of spiral surrounding in the outside of horizontal reactor 1, described
External heat-exchanging pipe is the semi-circular pipe being welded on the lateral wall of horizontal reactor 1, the bottom port of the external heat-exchanging pipe 18
It is external heat-exchanging pipe medium entrance 19, top port is external heat-exchanging pipe media outlet 20.
The axis direction of the horizontal reactor 1 and the angle of horizontal plane are 0-20 °.
The mixing temperature adjustment section cavity 4 and soaking zone cavity 5 are set by several along the radial direction of horizontal reactor 1 respectively
The flow-stopping plate 21 put is separated into several interconnected mixed cells and heat-insulation unit.
The flow-stopping plate 21 is the porous plate set perpendicular to the axis direction of horizontal reactor 1.
The rabbling mechanism includes the agitating shaft 22 set along the axis direction of horizontal reactor 1, in mixing temperature adjustment section chamber
Stirring vane 23 is respectively equipped with agitating shaft 22 in body 4, reaction segment occurred cavity 8 and soaking zone cavity 5.
During production, dimethyl suflfate and sodium nitrite in aqueous solution enter from reaction mixture respectively with flow velocity in certain proportion
Mouth 2 is reacted in flowing from front to back into the cavity of horizontal reactor 1.In mixing temperature adjustment section cavity 4, reaction mass
Recirculated water adverse current with spiral surrounding flowing in the external heat-exchanging pipe 18 in the outside of horizontal reactor 1 carries out heat exchange, makes reaction
After the temperature of material reaches 20 DEG C -30 DEG C, reaction mass continues to flow into the internal heat exchange tubes 13 of reaction temperature adjustment section cavity 7
Interior, the recirculated water further quick heat exchange of adverse current with reaction temperature adjustment section cavity 7 internal heat chamber reaches the temperature of reaction mass
To 50 DEG C -60 DEG C, then reaction mass enters reaction segment occurred cavity 8.
Reaction mass takes place reaction in reaction segment occurred cavity 8, generates nitromethane, releases in a short time
Amount of heat, makes reaction zone temperature quickly raise.The heat for producing is reacted as reaction mass and product flow into reaction drop
Continue anti-raw reaction, effectively control during recirculated cooling water adverse current fast cooling in temperature section cavity 9, with internal heat exchange tubes 13
Reaction temperature, it is to avoid because of temperature increase side reaction too high.
The material of the outflow of reaction temperature descending section cavity 9 enters soaking zone cavity 5, in soaking zone cavity 5 material by with it is outer
Recirculated water in portion's heat exchanger tube 18 exchanges heat and is maintained at 60 DEG C -70 DEG C, is reacted completely beneficial to reaction mass, improves product and receives
Rate.Finally, reactant mixture material discharges horizontal reactor 1 by material outlet port 3, the nitrous acid hydrogen first generated in course of reaction
The toxic gases such as ester, discharge from exhaust drain 6.
Because the temperature of reaction mass in mixing temperature adjustment section cavity 4 is not very high, if so heat-exchanger rig is arranged to
Internal tubular heat exchanger will cause reaction mass Precipitation, and influence reaction is carried out.And temperature adjustment section cavity 7 is reacted, especially
It is that the reaction mass temperature reacted in temperature descending section cavity 9 is higher, will not again because temperature is too low or circulation passage is smaller
And Precipitation blocks pipeline, so setting internal heat device, increase heat exchange area, improve heat exchange efficiency.It is spiral outside
The design of heat exchanger tube or flight makes current pass through from horizontal reactor outer helical, eliminates cooling dead angle, improves heat exchange
Efficiency.
Embodiment 2：
As shown in Figure 2, the embodiment continuously produces the reactor of nitromethane, including a horizontal reacting being obliquely installed
Device 1, the bottom of the horizontal reactor 1 is supported on the ground, in the front end higher of horizontal reactor 1 by some support columns
Top is provided with a reaction mixture import 2, and a material outlet port 3 is provided with the relatively low rear end bottom of horizontal reactor 1, described sleeping
The inner chamber of formula reactor 1 is divided into mixing temperature adjustment section cavity 4, conversion zone cavity and insulation from front to back along material conveying direction
Section cavity 5, an exhaust drain 6 is respectively equipped with the top of mixing temperature adjustment section cavity 4, conversion zone cavity and soaking zone cavity 5,
The conversion zone cavity is divided into reaction temperature adjustment section cavity 7, the and of reaction segment occurred cavity 8 from front to back along material conveying direction
Reaction temperature descending section cavity 9, an internal heat device is respectively equipped with reaction temperature adjustment section cavity 7 and reaction temperature descending section cavity 9,
An external heat-exchanging device is respectively equipped with outside mixing temperature adjustment section cavity 4, reaction segment occurred cavity 8 and soaking zone cavity 5, along Horizontal counter
Answer the axis direction of device 1 that one is provided with horizontal reactor 1 through mixing temperature adjustment section cavity 4, reaction temperature adjustment section cavity 7, reaction
The rabbling mechanism that segment occurred cavity 8 and reaction temperature descending section cavity 9 are set, the front end of the rabbling mechanism passes horizontal reactor 1
It is connected with the output shaft of a motor 11 after first mechanical sealing base 10 of front end, the rear end of rabbling mechanism is supported in located at Horizontal counter
Answer in the second mechanical sealing base 12 of the rear end of device 1.
The internal heat device includes one group of internal heat exchange tubes 13 set along the axis direction of horizontal reactor 1, including
Portion's heat exchanger tube 13 be respectively arranged at two ends with one along the radial direction of horizontal reactor 1 set fixed orifice plate 14, the internal heat
The two ends of pipe 13 are individually fixed on the fixing hole on fixed orifice plate 14, and the edge seal of fixed orifice plate 14 is fixed on horizontal reacting
The inwall of device 1, forms an internal heat chamber, internally heat exchanging chamber between every group of two fixation orifice plates 14 at the two ends of internal heat exchange tubes 13
Bottom rear and front side top be respectively equipped with an internal heat chamber medium entrance 16 and an internal heat chamber media outlet 17.
The external heat-exchanging device includes external heat-exchanging pipe 18 of one group of spiral surrounding in the outside of horizontal reactor 1, described
The bottom port of external heat-exchanging pipe 18 is external heat-exchanging pipe medium entrance 19, and top port is external heat-exchanging pipe media outlet 20.
The axis direction of the horizontal reactor 1 and the angle of horizontal plane are 0-20 °.
The flow-stopping plate 21 is the porous plate set perpendicular to the axis direction of horizontal reactor 1.
The mixing temperature adjustment section cavity 4 and soaking zone cavity 5 are set by several along the radial direction of horizontal reactor 1 respectively
The flow-stopping plate 21 put is separated into several interconnected mixed cells and heat-insulation unit.
The quantity of the mixed cell and heat-insulation unit is respectively two, and the rabbling mechanism is included along horizontal reactor 1
The agitating shaft 22 that axis direction is set, in the heat-insulation unit and reaction segment occurred cavity 8 of mixed cell, rear side in front side
Stirring vane 23 is respectively equipped with agitating shaft 22, the stirring vane 23 in reaction segment occurred cavity 8 is set perpendicular to agitating shaft 22,
Be conducive to being sufficiently mixed for reaction mass；Stirring vane 23 in the mixed cell of front side and the heat-insulation unit of rear side is defeated to material
Send direction to be obliquely installed, be conducive to the promotion of reaction mass.
In course of reaction, in order to control residence time of the reactant mixture material in horizontal reactor, mixing temperature adjustment section chamber
Body 4 and soaking zone cavity 5 are respectively divided into two mixed cells and heat-insulation unit, uniformly divide on the flow-stopping plate 21 between each unit
Through hole is furnished with, reaction mass can be passed through, and due to the stop of flow-stopping plate 21, reactant mixture material is in horizontal reactor 1
Cavity kept for certain residence time.During production, turned by setting the percent opening and perforate mode of porous plate, agitating shaft 22
Speed and the pipeline valve of material outlet port 3 keying come control reaction needed for residence time.Additionally, mixed cell inside is empty
Chamber is big, is sufficiently mixed under the drive of stirring vane uniformly beneficial to reaction mass.
Embodiment 3：
As shown in Figure 3, the present embodiment is with the difference of embodiment 2：The internal heat device includes one group
Perpendicular to the internal heat exchange tubes 13 that the axis direction of horizontal reactor 1 is set, the two ends of the internal heat exchange tubes 13 pass sleeping respectively
The side wall of formula reactor 1 is set, and the lower end of internal heat exchange tubes 13 is internal heat exchange tubes medium entrance 25, and upper end is internal heat exchange tubes
Media outlet 26.
Internal heat exchange tubes 13 are set perpendicular to the axis direction of horizontal reactor 1, make heat transferring medium logical from internal heat exchange tubes 13
Cross, it is to avoid reaction mass internally Precipitation in heat exchanger tube 13, block pipeline.
Embodiment 4：
As shown in Figure 4, the present embodiment is with the difference of embodiment 2：The external heat-exchanging device includes
One heat exchange jacket 27 for being sheathed on the outside of horizontal reactor 1, the inner side of the heat exchange jacket 27 is separated into by a flight 28
One spiral heat exchanging chamber, is respectively equipped with a heat exchange jacket medium entrance 15 and changes at the top of the bottom rear of heat exchange jacket 27 and front side
Thermal jacket media outlet 24.
The inner chamber of heat exchange jacket 27 is separated into spiral heat exchanging chamber by the setting of flight 28, recirculated water is effectively covered Horizontal counter
The outside of device 1 is answered, increases heat exchange area, improve heat exchange efficiency.
The present invention does not describe part in detail, is the known technology of those skilled in the art of the present technique.Finally illustrate, above reality
Example is applied to be merely illustrative of the technical solution of the present invention and unrestricted, although having been carried out specifically to the present invention with reference to preferred embodiment
It is bright, it will be understood by those within the art that, technical scheme can be modified or equivalent, and
The objective and scope of technical solution of the present invention are not departed from, it all should cover in the middle of scope of the presently claimed invention.
Claims (10)
1. it is a kind of it is continuous production nitromethane reactor, it is characterized in that：Including a horizontal reactor being obliquely installed, horizontal
Reactor front top higher is provided with a reaction mixture import, and a material is provided with the relatively low rear end bottom of horizontal reactor
Outlet port, the inner chamber of the horizontal reactor is divided into mixing temperature adjustment section cavity, reaction from front to back along material conveying direction
Section cavity and soaking zone cavity, a row is respectively equipped with the top of mixing temperature adjustment section cavity, conversion zone cavity and soaking zone cavity
Gas drain, the conversion zone cavity is divided into reaction temperature adjustment section cavity, reaction from front to back along material conveying direction to be occurred
Section cavity and reaction temperature descending section cavity, internal heat dress is respectively equipped with reaction temperature adjustment section cavity and reaction temperature descending section cavity
Put, an external heat-exchanging device is respectively equipped with outside mixing temperature adjustment section cavity, reaction segment occurred cavity and soaking zone cavity, along horizontal
The axis direction of reactor is provided with one through mixing temperature adjustment section cavity, reaction temperature adjustment section cavity, reaction hair in horizontal reactor
The rabbling mechanism that raw section cavity and reaction temperature descending section cavity are set, the front end of the rabbling mechanism passes horizontal reactor front end
Output shaft after first mechanical sealing base with a motor is connected, and the rear end of rabbling mechanism is supported in located at horizontal reactor rear end
In second mechanical sealing base.
2. it is according to claim 1 it is a kind of it is continuous production nitromethane reactor, it is characterized in that：The internal heat dress
Put including one group of internal heat exchange tubes set along horizontal reactor axis direction, internally heat exchanger tube is respectively arranged at two ends with an edge
The fixed orifice plate that horizontal reactor radial direction is set, the two ends of the internal heat exchange tubes are individually fixed in consolidating on fixed orifice plate
Determine on hole, the edge seal of fixed orifice plate is fixed on the inwall of horizontal reactor, every group of two fixing holes at internal heat exchange tubes two ends
An internal heat chamber is formed between plate, internally the bottom rear of heat exchanging chamber and front side top are respectively equipped with internal heat chamber Jie
Matter import and an internal heat chamber media outlet.
3. it is according to claim 1 it is a kind of it is continuous production nitromethane reactor, it is characterized in that：The internal heat dress
Put including one group of internal heat exchange tubes set perpendicular to horizontal reactor axis direction, the two ends of the internal heat exchange tubes are worn respectively
The side wall for going out horizontal reactor is set, and the lower end of internal heat exchange tubes is internal heat exchange tubes medium entrance, and upper end is internal heat exchange tubes
Media outlet.
4. it is according to claim 1 it is a kind of it is continuous production nitromethane reactor, it is characterized in that：The external heat-exchanging dress
The external heat-exchanging pipe on the outside of horizontal reactor including one group of spiral surrounding is put, the external heat-exchanging pipe is to be welded on horizontal reacting
Semi-circular pipe on device lateral wall, the bottom port of the external heat-exchanging pipe is external heat-exchanging pipe medium entrance, top port
It is external heat-exchanging pipe media outlet.
5. it is according to claim 1 it is a kind of it is continuous production nitromethane reactor, it is characterized in that：The external heat-exchanging dress
The heat exchange jacket including being sheathed on including one on the outside of horizontal reactor is put, the inner side of the heat exchange jacket is separated by a flight
Into a spiral heat exchanging chamber, an external heat-exchanging pipe medium entrance and outer is respectively equipped with the top of the bottom rear of heat exchange jacket and front side
Portion's heat exchanger tube media outlet.
6. it is according to claim 1 it is a kind of it is continuous production nitromethane reactor, it is characterized in that：The horizontal reactor
The angle of axis direction and horizontal plane be 0-20 °.
7. it is according to claim 1 it is a kind of it is continuous production nitromethane reactor, it is characterized in that：The mixing temperature adjustment section
Cavity and soaking zone cavity are separated into several phases by several along the flow-stopping plate that horizontal reactor radial direction is set respectively
Intercommunicated mixed cell and heat-insulation unit.
8. it is according to claim 7 it is a kind of it is continuous production nitromethane reactor, it is characterized in that：The flow-stopping plate is vertical
The straight porous plate set in horizontal reactor axis direction.
9. according to claim 1 or 7 it is a kind of continuous production nitromethane reactor, it is characterized in that：The mixer
Structure includes the agitating shaft set along horizontal reactor axis direction, in mixing temperature adjustment section cavity, reaction segment occurred cavity and guarantor
Stirring vane is respectively equipped with agitating shaft in temperature section cavity.
10. it is according to claim 7 it is a kind of it is continuous production nitromethane reactor, it is characterized in that：The mixed cell
Two are respectively with the quantity of heat-insulation unit, the rabbling mechanism includes the stirring set along horizontal reactor axis direction
Axle, paddle is respectively equipped with the agitating shaft in the heat-insulation unit and reaction segment occurred cavity of mixed cell, rear side in front side
Piece, the stirring vane in reaction segment occurred cavity is perpendicular to agitating shaft setting, the mixed cell of front side and the heat-insulation unit of rear side
Interior stirring vane is obliquely installed to material conveying direction.
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| CN201710055606.9A CN106732290A (en) | 2017-01-25 | 2017-01-25 | A kind of reactor of continuous production nitromethane |
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| CN201710055606.9A CN106732290A (en) | 2017-01-25 | 2017-01-25 | A kind of reactor of continuous production nitromethane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113181869A (en) * | 2021-07-05 | 2021-07-30 | 山东彩客东奥化学有限公司 | Nitration reactor for producing p-nitrotoluene from toluene |
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| CN113680307A (en) * | 2021-09-09 | 2021-11-23 | 金川集团股份有限公司 | Horizontal rotary reaction device |
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