CN205462142U - Direct synthetic reactor structure of gathering methoxy methylal of one -step method - Google Patents
Direct synthetic reactor structure of gathering methoxy methylal of one -step method Download PDFInfo
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- CN205462142U CN205462142U CN201620026466.3U CN201620026466U CN205462142U CN 205462142 U CN205462142 U CN 205462142U CN 201620026466 U CN201620026466 U CN 201620026466U CN 205462142 U CN205462142 U CN 205462142U
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Abstract
The utility model discloses a direct synthetic reactor structure of gathering methoxy methylal of one -step method. This reactor mainly by the equipment barrel, load and form for the internals of its core component by solid catalyst's heat exchange tube and by the water cap. It can not only be timely remove reaction heat, control bed reaction temperature, can also realize reaction material's in the bed evenly distributed effectively, solve the bias flow problem of commodity circulation in the large -scale reactor, the catalyst can effectively be separated with reactant, reaction product simultaneously, has solved the recovery problem of catalyst fixed and farine, can prevent in addition that formaldehyde from getting together in the reactor causes equipment to block up, is suitable for the large scale industry metaplasia and produces.
Description
Technical field
This utility model relates to polymethoxy methylal reactor field, and specifically a kind of one-step method is directly synthesized poly-methoxy
The structure of reactor of base dimethoxym ethane.
Background technology
China's derv fuel quality is relatively low, is mainly manifested on the content of sulfur content, Cetane number and aromatic hydrocarbons.Due to oil product
Of poor quality, because incomplete combustion causes tail gas pollution of motor-driven vehicle serious, this is also that PM2.5 value is higher, causes city haze to be formed
One of principal element.To this end, China put into effect new derv fuel standard (GB19147-2013) in 2013, but existing
Some oil refining process are difficult to produce satisfactory derv fuel.Chinese Diesel implements in full state four discharge standard, to oil product
The upgrading of quality is imperative.
Polymethoxy methylal (DMMn, n=3～8) is the reduction oil consumption generally acknowledged in the world and reduces the novel of fume emission
Environmental protection fuel oil blend component.DMMn, as diesel fuel additives, has the advantage that (1) has a good fuel performance: ten
Six alkane values are high, and oxygen content is high so that it is fully, residual is few in burning.Adding this oxycompound of 20%, smoke intensity is the highest reduces by 80%
～90%, NOx can reduce by 50%, and the thermal efficiency is the highest；(2) there is preferable engine cold-starting performance, have preferably lubrication
Performance, it is possible to decrease the wear rate of injection pump, engine cylinder-body and connecting rod, extends its service life；(3) there is preferable safety
Energy.Owing to flash-point is high, it is apparent from again in transport, storage, the safety of use；(4) easily biological-degradable, to environment
Endanger little；Diesel engine need not be changed, can directly add use, simultaneously without separately adding fuel-servicing equipment, storage facilities and personnel
Special technique is trained；(5) there is good compatibility with diesel oil, use with diesel oil mediation with certain proportion, oil consumption can be reduced, because of
But a kind of real green diesel.
What DMMn synthesized it is critical only that its catalysts and reactor thereof.The primary raw material of DMMn synthesis is methanol and first
Aldehyde, process route includes ionic liquid-catalyzed method, liquid acid catalysis method, solid acid catalysis method etc..
The ionic-liquid catalyst method technique of Chinese patent CN 104016838A and CN 104016839A report, its reaction
Device is the tank reactor of a band stirring system, although it is relatively simple for structure, but owing to catalyst is liquid phase, needs extra
Increase equipment realizes catalyst and separates with product.Strong additionally, due to catalytic erosion, this can cause upstream device
The corrosion resisting steel material of costliness must be used, and catalyst circulation needs more power consumption.It is similar to, United States Patent (USP) US
The liquid acid catalysis legal system DMMn technique of 2007/0260094 A1 report, its reaction there is also and ionic liquid-catalyzed technique
Same problem.
Chinese patent CN 104722249A reports the multisection type reaction tower of a kind of filling solid catalyst.Due to reaction
While realize product initial gross separation, improve the conversion ratio of reactor, but this reaction tower and inner parts structure thereof be the most complicated, add
Work manufacture is had any problem, and additionally easily forms bias current in reaction tower, and reactant can not be distributed uniformly, causes reaction uneven,
Need to increase internals to solve bias current problem in large industrialized produces.
Utility model content is asked present in current polymethoxy methylal (DMMn, n=3～8) synthesis reactor
Topic defect, the purpose of this utility model is to provide one and is directly synthesized the contracting of polymethoxy first with methanol and formaldehyde for raw material one-step method
The structure of reactor of aldehyde, the solid acid catalyst technique synthesis polymethoxy first used by Chinese patent CN 103848729 A
Acetal provides a kind of novel reactor.
In order to achieve the above object, the technical scheme that this utility model is used is:
A kind of one-step method is directly synthesized the structure of reactor of polymethoxy methylal, it is characterised in that: include vertically arranged
Cylinder, cylinder body bottom connection reaction raw materials charging aperture is installed, on the end socket of cylinder top connection be provided with synthesis crude product go out
Material mouth, is provided with multistage heat-exchanging tube bundle from top to bottom in cylinder, be filled with solid acidic resin catalysis in each heat exchanger tube respectively
Agent.The cylinder lateral wall that every section of catalysts bed is corresponding is respectively arranged with multiple equally distributed cooling medium entrance, cooling
Media outlet.Water cap tower tray it is respectively arranged with, on water cap tower tray between cylinder inner top and bottom, adjacent reaction beds
It is evenly distributed with water cap, the cylinder lateral wall that every section of catalysts bed bottom is corresponding is provided with and communicated with catalyst discharge port.
Described a kind of one-step method is directly synthesized the structure of reactor of polymethoxy methylal, it is characterised in that: described cylinder
Internal top is provided with silk screen.
Described a kind of one-step method is directly synthesized the structure of reactor of polymethoxy methylal, it is characterised in that: described instead
Material inlet is answered to be provided with pre-distributor.
Described a kind of one-step method is directly synthesized the structure of reactor of polymethoxy methylal, it is characterised in that: described cylinder
Internal every section of heat-exchanging tube bundle is made up of multiple heat exchanger tubes, is filled with solid acidic resin catalyst in each heat exchanger tube respectively, with
Constitute catalysts bed.
Described a kind of one-step method is directly synthesized the structure of reactor of polymethoxy methylal, it is characterised in that: every section is anti-
Answering in beds, heat exchanger tube is fixed on inside equipment barrel by heat exchanger tube tube sheet.In heat-exchanging tube bundle, each heat exchange is tubular
Being provided with baffle plate between the space become, baffle plate is disk-and-doughnut shape or segmental baffle.
Described a kind of one-step method is directly synthesized the structure of reactor of polymethoxy methylal, it is characterised in that: in cylinder
Being respectively arranged with water cap tower tray between top and bottom, adjacent reaction beds, water cap is with equilateral triangle or square
It is evenly distributed on water cap tower tray, and being threadedly secured on tower tray by water cap self band, water cap tower tray passes through its support member
It is fixed in reactor cylinder body.
Described a kind of one-step method is directly synthesized the structure of reactor of polymethoxy methylal, it is characterised in that: every section is anti-
Answer and on the cylinder lateral wall that beds is corresponding, be respectively arranged with thermometer mouth, and insert at bed different depth.
Described a kind of one-step method is directly synthesized the structure of reactor of polymethoxy methylal, it is characterised in that: on cylinder
Portion, bottom are respectively arranged with differential manometer mouth.
Described a kind of one-step method is directly synthesized the structure of reactor of polymethoxy methylal, it is characterised in that: every section is anti-
The cylinder lateral wall corresponding to beds is answered to be respectively arranged with methanol rinse mouth.
Described a kind of one-step method is directly synthesized the structure of reactor of polymethoxy methylal, it is characterised in that: at the bottom of cylinder
Portion is provided with material discharge port.
This utility model advantage is.(1) it is provided with reacting replacing heat pipe, is removed reaction heat in time by cooling medium, effectively
Control reaction temperature；(2) owing to have employed water cap, it is achieved that the collection of reaction mass and effectively distribution, solve
The bias current problem of logistics in reactor in maximization production, back-mixing is little, it is simple to reach higher conversion ratio；Solve catalysis simultaneously
Agent is fixed and the recovery problem of fine powder；(3) it is provided with methanol rinse mouth, prevents formaldehyde to be polymerized in the reactor and cause equipment to block up
Plug.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Detailed description of the invention
Shown in Figure 1, a kind of one-step method is directly synthesized the structure of reactor of polymethoxy methylal, including vertically arranged
Cylinder 8, bottom cylinder 8 connection reaction raw materials charging aperture is installed, on the end socket of cylinder top connection synthesis crude product is installed
Discharging opening.It is provided with multistage heat exchanger tube 9 in cylinder 8 from top to bottom, is filled with solid acidic resin respectively in each heat exchanger tube 9 and urges
Agent 5.Cylinder 8 sidewall that every section of catalysts bed is corresponding be respectively arranged with multiple equally distributed cooling medium entrance,
Cooling medium exports.Water cap tower tray 3, water cap it is respectively arranged with between cylinder 8 inner top and bottom, adjacent reaction beds
It is evenly distributed with water cap 4 on tower tray 3, cylinder 8 sidewall that every section of catalysts bed bottom is corresponding is provided with and communicated with catalysis
Agent discharge port.
Cylinder 8 inner top is provided with silk screen 10.
Reaction raw materials charging aperture is provided with pre-distributor 1.
In cylinder 8, every section of heat-exchanging tube bundle is made up of multiple heat exchanger tubes 9, is filled with solid acid respectively in each heat exchanger tube 9
Resin catalyst 5, to constitute catalysts bed.
In every section of catalysts bed, it is internal that heat exchanger tube 9 is fixed on equipment barrel 8 by heat exchanger tube tube sheet 7.Heat exchanger tube
Being provided with baffle plate 6 between the space that in bundle, each heat exchanger tube 9 is formed, baffle plate 6 is disk-and-doughnut shape or segmental baffle.
Being respectively arranged with water cap tower tray 3 between cylinder 8 inner top and bottom, adjacent reaction beds, water cap 4 is with just
Triangle or square are evenly distributed on water cap tower tray 3, and being threadedly secured on tower tray 3 by water cap 4 self band, water
Cap tower tray 3 is fixed in reactor cylinder body by its support member 2.
It is respectively arranged with thermometer mouth on cylinder 8 sidewall that every section of catalysts bed is corresponding, and it is different to insert bed
Depth.
Cylinder 8 top, bottom are respectively arranged with differential manometer mouth.
Cylinder 8 sidewall corresponding to every section of catalysts bed is respectively arranged with methanol rinse mouth.
Material discharge port it is provided with bottom cylinder 8.
In this utility model, the top of cylinder can set silk screen to further filter out catalyst fines, prevents bringing downstream into and sets
In Bei；Reaction raw materials charging aperture is provided with pre-distributor.
In this utility model, belong to exothermic reaction, in order to control owing to methanol and formalin are directly synthesized the reaction of DMMn
Reaction temperature, uses cooling medium to be removed reaction heat in time by heat exchanger tube.The cylinder lateral wall that every section of reaction bed is corresponding sets
Multiple equally distributed cooling medium entrance and cooling medium outlet are put, between heat exchanger tube and be provided with annulus-disk or folding
The baffle plate of the forms such as stream plate, with augmentation of heat transfer effect.
In this utility model, solid acidic resin catalyst is filled in heat exchanger tube, and is fixed on it by the interception of water cap
In.The advantages such as it is big that water cap has flow process area, corrosion-resistant, easily disassembled.Water cap uniformly divides with equilateral triangle or square
Cloth is on water cap tower tray, and being threadedly secured on tower tray by water cap self band, and water cap tower tray is fixed on by its support member
In reactor cylinder body.
In this utility model, every section of reaction bed arranges many group thermometer mouths, and urges in different depth insertion as required
Agent bed, to monitor reaction bed temperature, prevents from causing bed overtemperature because Local Heat Transfer is uneven.
In this utility model, it is provided with the differential manometer mouth measuring bed pressure reduction on the top of cylinder and bottom, to monitor reaction
Bed pressure drop, prevents oxymethylene polymerization occluding device.Additionally first is set at the cylinder lateral wall corresponding to every section of catalysts bed
Alcohol rinse mouth, methanol is as a kind of polymerization inhibitor, the depolymerization when equipment blocks, the effectively clogging of abatement apparatus.
In this utility model, set material discharge port at cylinder body bottom, when device stops by reactor in discharge of materials extremely
Safe place.
Claims (9)
1. an one-step method is directly synthesized the structure of reactor of polymethoxy methylal, it is characterised in that: include vertically arranged
Cylinder, cylinder body bottom connection is provided with reaction raw materials charging aperture, and on the end socket of cylinder top, connection is provided with synthesis crude product discharging
Mouthful, it is provided with multistage heat exchanger tube in cylinder from top to bottom, is filled with solid acidic resin catalyst in each heat exchanger tube respectively, often
The cylinder lateral wall that section catalysts bed is corresponding is provided with and respectively communicated with multiple equally distributed cooling medium entrance, cooling is situated between
Matter exports, and is respectively arranged with water cap tower tray between cylinder inner top and bottom, adjacent reaction beds, on water cap tower tray all
The even water cap that is distributed, the cylinder lateral wall that every section of catalysts bed bottom is corresponding is provided with and communicated with catalyst discharge port.
A kind of one-step method the most according to claim 1 is directly synthesized the structure of reactor of polymethoxy methylal, its feature
It is: described cylinder inner top is provided with silk screen.
A kind of one-step method the most according to claim 1 is directly synthesized the structure of reactor of polymethoxy methylal, its feature
It is: described reaction raw materials charging aperture is provided with pre-distributor.
A kind of one-step method the most according to claim 1 is directly synthesized the structure of reactor of polymethoxy methylal, its feature
Being: in every section of catalysts bed, being provided with baffle plate in set of heat exchange tubes between each heat exchanger tube, baffle plate is disk-and-doughnut
Or segmental baffle.
A kind of one-step method the most according to claim 1 is directly synthesized the structure of reactor of polymethoxy methylal, its feature
It is: water cap is evenly distributed on water cap tower tray with equilateral triangle or square, and being screwed by water cap self band
On tower tray, water cap tower tray is fixed in reactor cylinder body by its support member.
A kind of one-step method the most according to claim 1 is directly synthesized the structure of reactor of polymethoxy methylal, its feature
It is: on the cylinder lateral wall that every section of catalysts bed is corresponding, be respectively arranged with thermometer mouth.
A kind of one-step method the most according to claim 1 is directly synthesized the structure of reactor of polymethoxy methylal, its feature
It is: cylinder top, bottom are respectively arranged with differential manometer mouth.
A kind of one-step method the most according to claim 1 is directly synthesized the structure of reactor of polymethoxy methylal, its feature
It is: the cylinder lateral wall that every section of catalysts bed is corresponding is respectively arranged with methanol rinse mouth.
A kind of one-step method the most according to claim 1 is directly synthesized the structure of reactor of polymethoxy methylal, its feature
It is: cylinder body bottom is provided with material discharge port.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109745925A (en) * | 2019-02-26 | 2019-05-14 | 国家能源投资集团有限责任公司 | The loading method of n-butene direct hydration reactor |
-
2016
- 2016-01-08 CN CN201620026466.3U patent/CN205462142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109745925A (en) * | 2019-02-26 | 2019-05-14 | 国家能源投资集团有限责任公司 | The loading method of n-butene direct hydration reactor |
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