CN206304717U - A kind of tubular reactor for liquid-liquid diphase reaction - Google Patents
A kind of tubular reactor for liquid-liquid diphase reaction Download PDFInfo
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- CN206304717U CN206304717U CN201621443119.7U CN201621443119U CN206304717U CN 206304717 U CN206304717 U CN 206304717U CN 201621443119 U CN201621443119 U CN 201621443119U CN 206304717 U CN206304717 U CN 206304717U
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Abstract
The utility model belongs to technical field of chemical, it is related to a kind of tubular reactor for liquid-liquid diphase reaction, it is characterized in that, reactor front end sets fluid inlet, fluid inlet is connected with the static mixer in reactor, reactor enclosure external body installs coolant inlet, and heat exchanging pipe and refrigerant distribution pipe are installed in reactor shell inside, and coolant inlet is connected with heat exchanging pipe by distributor pipe.The utility model tubular reactor can be removed reaction heat by interior heat exchanger tube, and the shifting thermal control of different zones is realized by the annular spread pipe installed in reactor enclosure body, reach the target for being precisely controlled nitration reaction temperature, avoid the generation of side reaction, nitration product quality stability is improve, while reducing the investment cost of reactor.
Description
Technical field
The utility model belongs to technical field of chemical, is related to a kind of tubular reactor for liquid-liquid diphase reaction,
More particularly to a kind of tubular reactor of aromatic compound nitration reaction.
Background technology
Generally, the nitration reaction of aromatic compound is that aromatic compound mixes with nitration mixture and carries out, and such as benzene nitrifies nitro processed
Benzene, Chlorobenzene Nitration nitro-chlorobenzene, methylbenzene nitration dinitrotoluene (DNT) etc..Because this kind of reaction occurs mainly in two-phase interface
Place, the effect of two-phase mixtures has a direct impact to reaction conversion ratio and reaction rate, therefore, in the reactor development of such reaction
In must take into full account that two alternate have sufficiently large contact area.
At present, the reactor that the nitration reaction of aromatic compound is used mainly has two kinds：The anti-device of autoclave and tubular reactor.
Using high-speed stirred oar, mechanical driven enables two-phase hybrid reaction to wherein tank reactor, and the conversion ratio of reaction is relatively low, therefore
Multi-floating bodies are generally required, the energy consumption of high-speed stirred is higher, meanwhile, limited by reactor and agitating paddle manufacture craft, produce
Scale is amplified limited.Tubular reactor is that under pressure, two-phase liquid cocurrent is anti-in tubular type by static mixing element
Reaction in device is answered, the reactor has simple structure, and energy consumption is low, it is easy to the advantages of amplifying.But the removal that there is also reaction heat is stranded
Difficulty, temperature distributing disproportionation is even in pipeline reactor, and the shortcomings of accessory substance is more, therefore the exploitation of novel pipe reactor is subject to wide
General concern.
Dow global technical company patent CN1208123 describes the side of the nitrofying aromatic hydrocarbon compound in tubular reactor
Method, the tubular reactor has the short and small static mixing element separated by coalaesce district, and aromatic compound and nitration mixture pass through
Multiple static mixing elements reach mixed uniformly purpose, but belong to adiabatic process, do not account for the removal of reaction heat, exist anti-
Answer that flux is small, be difficult to amplify.
Patent CN203565055U discloses a kind of shell and tube reactor, including reactor casing and is disposed on institute
The multiple tubulations in reactor casing are stated, reactor casing includes casing main body and is fixed on the horizontal base of the casing bottom part body
Seat, is additionally provided with the reaction raw materials import and reacting product outlet connected with the multiple tubulation on the reactor casing, its
In, tubulation described at least one is obliquely installed relative to the horizontal base.
In different patents, difference is structure and the distribution of static mixing element, achieves certain effect, but
Identical shortcoming is there is also, uneven distribution of the reaction heat in reactor causes the localized accumulated of reaction heat, therefore accessory substance
Increase, consersion unit requirement for anticorrosion is high.
The content of the invention
Technical problem to be solved in the utility model is directed to the deficiencies in the prior art, there is provided a kind of new for liquid liquid
The tubular reactor of two phase reaction.The reactor has heat transfer efficiency high, and flux is big, easy to operate, the characteristics of reaction effect is good.
The utility model provides a kind of tubular reactor for liquid-liquid diphase reaction, it is characterised in that reactor front end
Fluid inlet is set, and fluid inlet is connected with the static mixer in reactor, and reactor enclosure external body installs cooling
Heat exchanging pipe and refrigerant distribution pipe are installed in agent import, reactor shell inside, and coolant inlet is with heat exchanging pipe by distribution
Pipe is connected.
Usually, the coolant inlet has 2 ~ 8.
The fluid inlet has 2 ~ 4.
The refrigerant distribution pipe is annular, and different coolant inlets are with different zones heat exchanging pipe in reactor by cold
But agent distributor pipe connection.
Compared with prior art, because the utility model tubular reactor can be removed reaction heat by interior heat exchanger tube,
And the shifting thermal control of different zones is realized by the annular spread pipe installed in reactor enclosure body, reach and be precisely controlled nitration reaction
The target of temperature, it is to avoid the generation of side reaction, improves nitration product quality stability, while reducing the investment of reactor
Expense.
Brief description of the drawings
Fig. 1 is the tubular reactor structural representation of the utility model embodiment liquid-liquid diphase reaction.
Fig. 2 is annular distributor pipe schematic diagram in embodiment.
In Fig. 1,1,2-fluid inlet；3-static mixer；4-coolant inlet；5-refrigerant distribution pipe；6-anti-
Answer device housing；7-heat exchanging pipe；8-coolant outlet；9-material outlet.
Specific embodiment
Utility model is described further below in conjunction with the accompanying drawings.
Embodiment
As shown in Figure 1：Reactor front end set fluid inlet (1), (2), fluid inlet (1), (2) be arranged on reactor
Interior static mixer (3) connection, installs peace inside coolant inlet (4), reactor shell (6) outside reactor shell (6)
Dress heat exchanging pipe (7) and annular refrigerant distribution pipe (5), coolant inlet (4) is with heat exchanging pipe (7) by refrigerant distribution pipe
(5) connect, various heat exchange tubulation (7) is connected from different coolant inlets (4) by different annular refrigerant distribution pipes (5).
Embodiment is operated here：Two kinds of liquid phase reactor things enter through fluid inlet (1) and (2) respectively by a certain percentage
Enter static mixer (3), reaction in reactor shell (6) is mixed into a mixer, reaction heat is by heat exchange in reactor
Tubulation (7) is removed, and by adjusting the coolant flow of the outside difference coolant inlet (4) of reactor shell (6), controls reactor
Interior reaction temperature stabilization, makes two kinds of liquid phase materials be fully contacted reaction, the reacted material outlet of reacting rear material (9) discharge.
Claims (4)
1. it is a kind of for liquid-liquid diphase reaction tubular reactor, it is characterised in that reactor front end set fluid inlet, liquid phase
Import is connected with the static mixer in reactor, and reactor enclosure external body installs coolant inlet, inside reactor shell
Heat exchanging pipe and refrigerant distribution pipe are installed, coolant inlet is connected with heat exchanging pipe by refrigerant distribution pipe.
2. it is according to claim 1 for liquid-liquid diphase reaction tubular reactor, it is characterised in that the fluid inlet
There are 2 ~ 4.
3. it is according to claim 1 for liquid-liquid diphase reaction tubular reactor, it is characterised in that the cooling agent enters
Mouth has 2 ~ 8.
4. according to claim 1 or 3 for liquid-liquid diphase reaction tubular reactor, it is characterised in that the cooling
Agent distributor pipe is annular, and different coolant inlets are connected with different zones heat exchanging pipe in reactor by refrigerant distribution pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621443119.7U CN206304717U (en) | 2016-12-27 | 2016-12-27 | A kind of tubular reactor for liquid-liquid diphase reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621443119.7U CN206304717U (en) | 2016-12-27 | 2016-12-27 | A kind of tubular reactor for liquid-liquid diphase reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206304717U true CN206304717U (en) | 2017-07-07 |
Family
ID=59246853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621443119.7U Active CN206304717U (en) | 2016-12-27 | 2016-12-27 | A kind of tubular reactor for liquid-liquid diphase reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206304717U (en) |
-
2016
- 2016-12-27 CN CN201621443119.7U patent/CN206304717U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: China Petroleum & Chemical Corp. Patentee before: Nanhua Group Research Institute |