CN206529420U - A kind of dimethyl carbonate mixture separation tower - Google Patents
A kind of dimethyl carbonate mixture separation tower Download PDFInfo
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- CN206529420U CN206529420U CN201720103777.XU CN201720103777U CN206529420U CN 206529420 U CN206529420 U CN 206529420U CN 201720103777 U CN201720103777 U CN 201720103777U CN 206529420 U CN206529420 U CN 206529420U
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- dimethyl carbonate
- disengagement zone
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- hypomere
- epimere
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Abstract
The utility model discloses a kind of dimethyl carbonate mixture separation tower, including separator, the surface of separator offers dimethyl carbonate mixture entrance, separator interior is hollow structure, separator divides into epimere Disengagement zone by chamfering, hypomere Disengagement zone, the diameter of epimere Disengagement zone is less than diameter of the hypomere from area, the inside of epimere Disengagement zone and hypomere Disengagement zone is mounted on filler, hollow area between filler is respectively arranged with collector, distributor, the bottom of lower floor's filler of hypomere Disengagement zone is provided with dimethyl carbonate outlet, mixture outlet is provided with above the upper strata filler of epimere Disengagement zone, using high efficiency packing contact technique under high pressure, successfully realize DMC separation and purification targets, the national standard dimethyl carbonate product of purity 99.5% can be produced, realize that DMC products (standards of YS/T672 2008) reach top grade product, it is novel in design, it is a kind of good innovation scheme, there is very much market promotion prospect.
Description
Technical field
The utility model is related to gas purification apparatus, and dimethyl carbonate is mixed more particularly in coal-ethylene glycol production technology
Compound, which is efficiently separated, uses separation tower.
Background technology
Dimethyl carbonate abbreviation DMC is a kind of excellent, the widely used industrial chemicals of nontoxic, environmental-protecting performance, and it is a kind of
Containing functional groups such as carbonyl, methyl and methoxyl groups in important organic synthesis intermediate, molecular structure, with a variety of reactivity
Can, in production with using conveniently, safely, pollute less, easily transport the features such as, because dimethyl carbonate toxicity is smaller, be
A kind of " green " chemical products with development prospect.
At present, coal based synthetic gas preparing ethylene glycol production uses two-step method oxalate route, during production oxalate, companion
With the dimethyl carbonate (DMC) of side reaction generation about 5%, DMC and methanol etc. form azeotropic, produce DMC mixtures, this mixture
Middle DMC contents about 40%, dimethyl carbonate (DMC) is a kind of important organic chemical industry's intermediate, due to containing in its molecular structure
Have carbonyl, methyl, methoxyl group and carbomethoxy, thus can be widely used for being carbonylated, methylate, methoxylation and carbonvlmethyl
The organic synthesis such as change, for producing makrolon, isocyanates, polyurethanes, PCDL, pi-allyl two
The chemical products such as glycol carbonic ester, methylamino formic acid naphthalene ester (sevin), methyl phenyl ethers anisole, tetramethyl alcohol ammonium, it is impossible to efficiently separate this
Part mixes, cause large-tonnage product and wastage of material, there is deficiency.
In summary, for the defect of prior art, it is accordingly required in particular to a kind of dimethyl carbonate mixture separation tower, with
Solve the deficiencies in the prior art.
Utility model content
For effectively can not effectively be purified dimethyl carbonate mixture in the prior art, substantial amounts of wave is caused
Take, it is novel in design the utility model proposes a kind of dimethyl carbonate mixture separation tower, connect using high efficiency packing under high pressure
The technology of touching, successfully realizes the refining spearation of dimethyl carbonate, has solved the defect of prior art.
To achieve these goals, the technical solution of the utility model is as follows：
A kind of dimethyl carbonate mixture separation tower, including separator, the surface of separator offer carbonic acid diformazan
Ester admixture entrance, separator interior is hollow structure, and separator divides into epimere Disengagement zone, hypomere Disengagement zone by chamfering,
The inside of diameter of the diameter of epimere Disengagement zone less than hypomere from area, epimere Disengagement zone and hypomere Disengagement zone is mounted on filler,
Hollow area between filler is respectively arranged with collector, distributor, and the bottom of lower floor's filler of hypomere Disengagement zone is provided with carbonic acid
Dimethyl ester is exported, and mixture outlet is provided with above the upper strata filler of epimere Disengagement zone.
Further, the material that described filler is used is stainless steel.
Further, a diameter of 1.8m of described epimere Disengagement zone, a diameter of 2.2m of hypomere Disengagement zone.
Filler in epimere Disengagement zone described in the utility model and hypomere Disengagement zone is two layers, separator interior
Totally four layers of filler.
The interface opened up on the surface of hypomere Disengagement zone described in the utility model is fixed with liquid level gauge by adpting flange.
Further, described dimethyl carbonate mixture entrance is opened in the lower section of filler.
Further, described dimethyl carbonate mixture entrance, dimethyl carbonate outlet, the surface of mixture outlet are pacified
Equipped with control valve, control valve uses check valve.
Further, the bottom of described separator is provided with support frame, and the upper and lower ends of separator are arc-shaped.
The beneficial effects of the utility model are：This product is simple in construction, using high efficiency packing contact technique under high pressure, success
DMC separation and purification targets are realized, the national standard dimethyl carbonate product of purity 99.5% can be produced, DMC products (YS/T672- is realized
2008 standards) top grade product are reached, and filler service life is long, and it is novel in design, it is a kind of good innovation scheme, has market to push away very much
Wide prospect.
Brief description of the drawings
Describe the utility model in detail with reference to the accompanying drawings and detailed description：
Fig. 1 is structural representation of the present utility model；
100- separators in figure, 111- epimeres Disengagement zone, 112- hypomeres Disengagement zone, 113- chamferings, 110- support frames, 120-
Filler, 130- hollow areas, 140- dimethyl carbonate mixture entrances, the outlet of 150- dimethyl carbonates, 160- mixture outlets,
170- interfaces.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Referring to Fig. 1, a kind of dimethyl carbonate mixture separation tower, including separator 100, the surface of separator 100
Dimethyl carbonate mixture entrance 140 is offered, the inside of separator 100 is hollow structure, and separator 100 passes through the area of chamfering 113
It is divided into epimere Disengagement zone 111, hypomere Disengagement zone 112, the diameter of epimere Disengagement zone 111 is less than hypomere from the diameter in area 112, epimere
The hollow area 130 that the inside of Disengagement zone 111 and hypomere Disengagement zone 112 is mounted between filler 120, filler 120 is set respectively
There are collector, distributor, the bottom of lower floor's filler of hypomere Disengagement zone 112 is provided with dimethyl carbonate outlet 150, epimere separation
Mixture outlet 160 is provided with above the upper strata filler in area 111.
In addition, the material that filler 120 is used is stainless steel.A diameter of 1.8m of epimere Disengagement zone 111, hypomere Disengagement zone
112 a diameter of 2.2m.Epimere Disengagement zone 111 is two layers with the filler 120 in hypomere Disengagement zone 112, inside separator 100
Totally four layers of filler 120.The interface 170 that the surface of hypomere Disengagement zone 112 is opened up is fixed with liquid level gauge by adpting flange.Carbonic acid
Dimethyl ester mixture inlet 140 is opened in the lower section of filler 120.Dimethyl carbonate mixture entrance 140, dimethyl carbonate outlet
150th, the surface of mixture outlet 160 is mounted on control valve, and control valve uses check valve.The bottom of separator 100 is set
Support frame 110 is equipped with, the upper and lower ends of separator 100 are arc-shaped.
The DMC mixtures that low pressure separation column can not be efficiently separated, flow about 8m3/ h, pressure 0.5MPa, 40 DEG C of temperature, warp
Force (forcing) pump enters separation tower, separation tower using the design of four sections of fillers, two sections tower body diameter is respectively 2.2 meters,
1.8 rice.Its core technology under high pressure, realizes that methanol breaks azeotropic with dimethyl carbonate, with four layers of filler, DMC for high efficiency packing
Concentration is gradually changed, and 99.9% DMC products, DMC separations tower structure, new packing and operation are finally obtained in tower bottom
Con trolling index is the utility model content, and production control mode is centralized computer control system (DCS).
DMC mixtures (content 40%) can not be realized because of azeotropic to be efficiently separated, and the utility model is set in the separation of former low pressure
Increase DMC separation towers on the basis of applying newly, top grade product DMC products are obtained in tower reactor.Main technical content：New tower body design,
Collector, distributor are set between 2.2 meters/1.8 meters of upper-lower section tower diameter, four layers of filler, filler；New packing is designed, and stainless steel is whole
Body filler.Technical principle is methanol 30%, and DMC40%, DMO30% common separation methods are difficult to reach requirement, and DMC separation is straight
Influence performance and Business Economic Benefit are connect, the principle of azeotropic distillation is in methanol, the component azeotropic solution of DMC, DMO tri- or waved relatively
Using methanol as entrainment reagent in hair degree very big three component solutions, DMC components form new azeotropic mixture in this entrainment reagent original solution, newly
Azeotropic mixture boiling point ratio, the boiling point of former azeotropic mixture is much lower, solution is become the rectifying of " azeotropic mixture-pure component ", its is relative
Volatility is big and is easily isolated.162 ± 3 DEG C of DMC mixtures separation tower column bottom temperature of the present utility model, tower top temperature
142 ± 5 DEG C, tower bottom pressure 1.3MPa, reflux ratio 0.68,67 DEG C of overhead condenser temperature control.Operation result tower reactor product DMC
Index：Purity 99.5%, methanol 10ppm, moisture 30ppm, peroxide 5ppm, density 1.071g/cm3.It was fully achieved super
Cross YS/T 672-2008 standard top grade product indexs.In recyclable product DMC5000 tons of year, it is worth 20,000,000 yuan, and the methanol reclaimed
In be free of DMC, complete-reclaiming synthesizes esterification unit with ethylene glycol, without outer row's methanol.
The utility model is effective to be：It is simple in construction, using high efficiency packing contact technique under high pressure, successfully realize DMC points
From refined target, the national standard dimethyl carbonate product of purity 99.5% can be produced, DMC products (YS/T672-2008 standards) are realized
Top grade product are reached, and filler service life is long, it is novel in design, it is a kind of good innovation scheme, there is very much market promotion prospect.
It should be understood by those skilled in the art that, the utility model is not restricted to the described embodiments, above-described embodiment and
Simply illustrate principle of the present utility model described in specification, on the premise of the utility model spirit and scope are not departed from originally
Utility model also has various changes and modifications, and these changes and improvements are both fallen within the range of claimed the utility model.
The utility model is claimed scope and defined by appended claims and its equivalent.
Claims (8)
1. a kind of dimethyl carbonate mixture separation tower, including separator, the surface of separator offers dimethyl carbonate
Mixture inlet, it is characterised in that：Separator interior is hollow structure, separator by chamfering divide into epimere Disengagement zone, under
Section Disengagement zone, the diameter of epimere Disengagement zone is less than diameter of the hypomere from area, and the inside of epimere Disengagement zone and hypomere Disengagement zone is pacified
Equipped with filler, the hollow area between filler is respectively arranged with collector, distributor, and the bottom of lower floor's filler of hypomere Disengagement zone is set
It is equipped with above dimethyl carbonate outlet, the upper strata filler of epimere Disengagement zone and is provided with mixture outlet.
2. a kind of dimethyl carbonate mixture separation tower according to claim 1, it is characterised in that：Described filler is adopted
Material is stainless steel.
3. a kind of dimethyl carbonate mixture separation tower according to claim 1, it is characterised in that：Described epimere point
From a diameter of 1.8m in area, a diameter of 2.2m of hypomere Disengagement zone.
4. a kind of dimethyl carbonate mixture separation tower according to claim 1, it is characterised in that：The epimere separation
Area is two floor, totally four layers of the filler of separator interior with the filler in hypomere Disengagement zone.
5. a kind of dimethyl carbonate mixture separation tower according to claim 1, it is characterised in that：Described hypomere point
The interface opened up from the surface in area is fixed with liquid level gauge by adpting flange.
6. a kind of dimethyl carbonate mixture separation tower according to claim 1, it is characterised in that：Described carbonic acid two
Mixtures of methyl esters entrance is opened in the lower section of filler.
7. a kind of dimethyl carbonate mixture separation tower according to claim 1, it is characterised in that：Described carbonic acid two
Mixtures of methyl esters entrance, dimethyl carbonate outlet, the surface of mixture outlet are mounted on control valve, and control valve is using single
To valve.
8. a kind of dimethyl carbonate mixture separation tower according to claim 1, it is characterised in that：Described separator
Bottom be provided with support frame, the upper and lower ends of separator are arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103777.XU CN206529420U (en) | 2017-01-25 | 2017-01-25 | A kind of dimethyl carbonate mixture separation tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103777.XU CN206529420U (en) | 2017-01-25 | 2017-01-25 | A kind of dimethyl carbonate mixture separation tower |
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| CN206529420U true CN206529420U (en) | 2017-09-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114159816A (en) * | 2021-12-03 | 2022-03-11 | 铜陵金泰化工股份有限公司 | Processing device and process for preparing dimethyl carbonate and co-producing propylene glycol |
-
2017
- 2017-01-25 CN CN201720103777.XU patent/CN206529420U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114159816A (en) * | 2021-12-03 | 2022-03-11 | 铜陵金泰化工股份有限公司 | Processing device and process for preparing dimethyl carbonate and co-producing propylene glycol |
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