CN205073902U - Gas mixing device in oxidation carbonyl synthesis carbonic acid ester - Google Patents
Gas mixing device in oxidation carbonyl synthesis carbonic acid ester Download PDFInfo
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- CN205073902U CN205073902U CN201520851919.1U CN201520851919U CN205073902U CN 205073902 U CN205073902 U CN 205073902U CN 201520851919 U CN201520851919 U CN 201520851919U CN 205073902 U CN205073902 U CN 205073902U
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Abstract
The utility model relates to a carbonic acid ester synthesis technology field, concretely relates to gas mixing device in oxidation carbonyl synthesis carbonic acid ester, it still includes mixing arrangement, the mixing arrangement the left side is provided with oxygen inlet and advances the carbon monoxide mouth, and the right -hand member is provided with mixed gas outlet, be provided with the pivot in the mixing arrangement, the pivot top is provided with the stirring leaf to it is fixed to adopt fixation nut, stirring leaf blade surface is provided with ventilative micropore, ventilative micropore is irregularly shapedly. The utility model discloses its adopts, and to be provided with pivot, stirring leaf etc. In the blender fixed, helps the stopping reaction under the stable control of motor, adopts the mipor gas purging and the gas combination of helping that have of pivot formula, and it has convenient to use, easy operation, and the practicality is good, characteristics such as low cost.
Description
Technical field
The utility model relates to carbonic ester synthesis technical field, is specifically related to a kind of gas mixer be oxidized in carbonylation synthesis carbonic ester.
Background technology
Carbonic ester (dimethyl carbonate, diethyl carbonate etc.) is a kind of important green Organic Chemicals, containing multiple functional group in its molecule, can carry out the Reactive Synthesis such as oxidative carbonylation.Phosgene and the dithyl sulfate that can substitute severe toxicity react as reaction dissolvent and multiple alcohol, phenol and ester type compound, synthesize the downstream product of a series of high added value.Therefore, the research of its synthetic method is progressively received to the concern of people.Traditional synthetic method is with alcohol and phosgene reaction, and the method reactant severe toxicity, the HCl of generation is to consersion unit seriously corroded.Ester-interchange method uses various carbonic ester and alcohol to carry out exchange reaction, and technical process is also comparatively complicated, and cost is high.Oxidative carbonylation is the reaction utilizing alcohol, oxygen and carbon monoxide to carry out under catalyst action.This technical process has raw material and is easy to get, the simple and low cost and other advantages of technique.Italy Enichem company (IT1252070; US5536864 etc.) take the lead in taking CuCl as catalyst, reaction temperature 120 ~ 130 DEG C, pressure 2.0 ~ 3.0MPa, adopt the tank reactor that the band of series connection stirs, liquid phase oxidation once through yield 32%, achieves methanol oxidation carbonylation Synthesis of dimethyl carbonate suitability for industrialized production the eighties in 20th century.U.S. Texaco company (US4667053 afterwards; US4785130; US4879266), Dow chemical company (US5004827; US5349102; US5387708), German Bayer company (US5821377; US5739258; And Japanese UBE company (US5162563 WO0037413); JP2007084470) imperfection for process has carried out linguistic term, all achieve improvement effect in various degree, wherein Japanese UBE company adopts fixed bed reactors, be circulatory mediator with NO, take palladium as catalyst, reaction is carried out in two steps, reaction temperature 110 ~ 130 DEG C, pressure 0.2 ~ 0.5MPa, growth by lower pressure phase dimethyl carbonate.Chinese patent (CN1197792A; CN1197792A; CN1210850A; CN1204644A) mainly adopt CuCl composite catalyst and tubular reactor circulation technology, in production operation, eliminate the complicated catalyst such as the flash distillation of ENI technique, filtration, methyl alcohol recoil and making beating add and separation circuit.In the improvement of catalyst, Chinese patent CN1169624C (2004), CN100388978C (2008), CN101856625A (2010) uses the good cupric system of stability instead, adopt the organic amine salt containing N or P atom, organophosphorated salt and high molecular polymer are part, the corrosivity of this composition catalyst to equipment obviously reduces, particularly this research group (CN100388978C, CN101856625A) the common quaternary ammonium salt Huo quaternary alkylphosphonium salt containing N or P atom and copper halide or zinc complex reaction is adopted, propose a kind of serial organometallic complex catalyst for alcohol oxidation carbonylation synthesis carbonic ester originally, add the dissolubility of catalyst and cupric activity.
At present, propose the method for a kind of highly effective and safe oxidation carbonylation synthesis carbonic ester, comprise the steps:
(1) oxidation carbonylation: by introducing the reactor with packed tower after catalyst solution and raw alcohol mixing, pass into CO and O from reactor bottom
2, wherein said O
2divide two-way to pass into reactor, a road passes in reactor together with CO, keeps CO and O
2raw materials components mole ratio be (12 ~ 16): 1, another road continues to be passed in catalyst solution and starts oxidation carbonylation, wherein, utilizes flow controller control CO and O
2flow, makes CO with all O
2mol ratio be (2 ~ 6): 1, described catalyst solution is the mixture of the active component of homogeneous phase and the complex of ligand component and solvent;
(2) flash separation: the gas-phase product of reaction and unreacted unstripped gas are discharged from the tower top of reactor, and liquid product, partially catalyzed agent solution are taken out of reactor and entered flash tank, carry out flash separation;
(3) gas-liquid separation: the vapour phase flashed off is after condenser cooling, and enter knockout drum, gas phase goes out from gas-liquid separation upper end row of conduits, and this pipeline is connected with the pipeline of reactor top, Exhaust Gas is through de-CO
2posterior circle uses, and bottom knockout drum, the isolated catalyst solution with a small amount of product is by circulating line and unstripped gas O
2mixing, Returning reactor;
(4) separation of products: what flash off is separated through knockout drum the liquid obtained and enters down one separation of products unit, in separative element after rectifying, obtains carbonic ester product.
In the method, oxygen and carbon dioxide be mixed into its react in an important step, if mix bad, the not good problem of serious quality can be brought, the product quality of entirety and productive rate be brought and has a strong impact on.
Utility model content
The purpose of this utility model is defect for prior art and deficiency, there is provided a kind of structure simple, a kind of gas mixer be oxidized in carbonylation synthesis carbonic ester reasonable in design, easy to use, its adopts, and in blender, be provided with rotating shaft, paddle etc. fixing, contributes to stable reaction under the stability contorting of motor, and what adopt rotary shaft contributes to mixing of gas purging and gas with micropore, and it has easy to use, simple to operate, the features such as practicality is good, with low cost.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of gas mixer be oxidized in carbonylation synthesis carbonic ester described in the utility model, comprise mixing arrangement, the described mixing arrangement left side is provided with oxygen feeder and enters carbon monoxide mouth, right-hand member is provided with and blends gas port, be provided with rotating shaft in described mixing arrangement, described rotating shaft top is provided with paddle, and adopts hold-down nut to fix, described paddle blade face is provided with breathable microporous, and described breathable microporous is irregularly shaped.
Be provided with filtering module between described paddle and mixing arrangement, described filtering module adopts foaming body or metal screen.
Described blender lower end is provided with return duct, connects the paddle left and right sides respectively, described return duct is provided with monomer valve.
After adopting said structure, the utility model beneficial effect is: it is fixing that this practicality employing is provided with rotating shaft, paddle etc. in blender, under the stability contorting of its motor novel, contribute to stable reaction, what adopt rotary shaft contributes to mixing of gas purging and gas with micropore; Adopt filter to carry out gas filtration, can not only remove rubbish and blame with oil, and can reduce flow velocity, formation sinuous flow, contributes to the condensation of gas, and if and it has easy to use, simple to operate, the features such as practicality is good, with low cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Description of reference numerals:
1, mixing arrangement; 2, oxygen feeder; 3, carbon monoxide mouth is entered; 4, gas port is blended; 5, rotating shaft; 6, paddle; 7, hold-down nut; 8, breathable microporous; 9, filter; 10, return duct; 11, check valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of gas mixer be oxidized in carbonylation synthesis carbonic ester described in the utility model, comprise mixing arrangement 1, described mixing arrangement 1 left side is provided with oxygen feeder 2 and enters carbon monoxide mouth 3, right-hand member is provided with and blends gas port 4, rotating shaft 5 is provided with in described mixing arrangement 1, described rotating shaft 5 is connected with external motor, described rotating shaft 5 top is provided with paddle 6, and adopt hold-down nut 7 to fix, described paddle 6 blade face is provided with breathable microporous 8, and described breathable microporous 8 is in irregularly shaped.
Be provided with filtering module 9 between described paddle 8 and mixing arrangement 1, described filtering module 9 adopts foaming body or metal screen.
Described blender 1 lower end is provided with return duct 10, connects paddle 8 left and right sides respectively, described return duct 10 is provided with monomer valve 11.
This practicality adopts that in blender, be provided with rotating shaft, paddle etc. fixing, contributes to stable reaction under the stability contorting of its motor novel, and what adopt rotary shaft contributes to mixing of gas purging and gas with micropore; Adopt filter to carry out gas filtration, rubbish can not only be removed and blame with oil, and can flow velocity be reduced, form sinuous flow, contribute to the condensation of gas; Side is provided with return duct and monomer valve, contribute to stablizing the pressure differential in blender, adopt foaming body or metal screen simultaneously, contribute to gas segmentation, contribute to the further increasing of its mixed effect, and if and it has easy to use, simple to operate, the features such as practicality is good, with low cost.
The above is only better embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent claim change or modify, and are included in the utility model patent claim.
Claims (3)
1. one kind is oxidized the gas mixer in carbonylation synthesis carbonic ester, it is characterized in that: it comprises mixing arrangement (1), described mixing arrangement (1) left side is provided with oxygen feeder (2) and enters carbon monoxide mouth (3), right-hand member is provided with and blends gas port (4), rotating shaft (5) is provided with in described mixing arrangement (1), described rotating shaft (5) is connected with external motor, described rotating shaft (5) top is provided with paddle (6), and adopt hold-down nut (7) to fix, described paddle (6) blade face is provided with breathable microporous (8), described breathable microporous (8) is in irregularly shaped.
2. a kind of gas mixer be oxidized in carbonylation synthesis carbonic ester according to claim 1, it is characterized in that: be provided with filtering module (9) between described paddle and mixing arrangement (1), described filtering module (9) adopts foaming body or metal screen.
3. a kind of gas mixer be oxidized in carbonylation synthesis carbonic ester according to claim 1, it is characterized in that: described blender lower end is provided with return duct (10), connect the paddle left and right sides respectively, described return duct (10) is provided with monomer valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520851919.1U CN205073902U (en) | 2015-10-30 | 2015-10-30 | Gas mixing device in oxidation carbonyl synthesis carbonic acid ester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520851919.1U CN205073902U (en) | 2015-10-30 | 2015-10-30 | Gas mixing device in oxidation carbonyl synthesis carbonic acid ester |
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| Publication Number | Publication Date |
|---|---|
| CN205073902U true CN205073902U (en) | 2016-03-09 |
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|---|---|---|---|
| CN201520851919.1U Active CN205073902U (en) | 2015-10-30 | 2015-10-30 | Gas mixing device in oxidation carbonyl synthesis carbonic acid ester |
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|---|---|
| CN (1) | CN205073902U (en) |
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- 2015-10-30 CN CN201520851919.1U patent/CN205073902U/en active Active
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