CN203971433U - The de-dimethyl ether system of carbon four after ether - Google Patents
The de-dimethyl ether system of carbon four after ether Download PDFInfo
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- CN203971433U CN203971433U CN201420384042.5U CN201420384042U CN203971433U CN 203971433 U CN203971433 U CN 203971433U CN 201420384042 U CN201420384042 U CN 201420384042U CN 203971433 U CN203971433 U CN 203971433U
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Abstract
After the utility model relates to ether, carbon four takes off dimethyl ether system, it is characterized in that comprising that carbon four conveyance conduits after ether connect the tube side entrance of First Heat Exchangers, the tube side outlet of First Heat Exchanger connects the feed(raw material)inlet of rectifying column, the tower bottom outlet of rectifying column connects the shell side entrance of described First Heat Exchanger, and the shell side outlet of First Heat Exchanger connects extraneous upstream device; The tower top outlet of described rectifying column connects the shell side entrance of air cooler and cooler successively, and the shell side outlet of cooler connects the feed(raw material)inlet of return tank; The liquid-phase outlet of return tank connects the spray inlet of described rectifier by reflux pump; The bottom of described rectifying column is also provided with bypass outlet, and this bypass outlet connects reboiler, and the outlet of reboiler connects the reflux inlet of rectifying column.The utility model can remove the dimethyl ether in carbon after ether four totally, and extrusion rate reaches 99.9%, thereby has guaranteed to enter the purity of isooctane device or methyl ethyl ketone plant Raw, has effectively extended the service life of catalyst.
Description
Technical field
The utility model relates to chemical plant installations, specifically refers to the de-dimethyl ether system of carbon four after a kind of ether.
Background technology
Mixing carbon four is raw materials of isooctane device.After ether, in carbon four raw materials, contain a small amount of dimethyl ether, dimethyl ether is oxygenatedchemicals, and oxygenatedchemicals has a certain impact to the catalyst of subsequent reactions, therefore, must remove.
Summary of the invention
Technical problem to be solved in the utility model is that the present situation for prior art provides the de-dimethyl ether system of carbon four after a kind of ether, to remove the dimethyl ether in isooctane device raw material, thereby guarantees service life of subsequent catalyst.
The utility model solves the problems of the technologies described above adopted technical scheme: the de-dimethyl ether system of carbon four after this ether, it is characterized in that comprising that carbon four conveyance conduits after ether connect the tube side entrance of First Heat Exchangers, the tube side outlet of First Heat Exchanger connects the feed(raw material)inlet of rectifying column, the tower bottom outlet of rectifying column connects the shell side entrance of described First Heat Exchanger, and the shell side outlet of First Heat Exchanger connects extraneous upstream device;
The tower top outlet of described rectifying column connects the shell side entrance of air cooler and cooler successively, and the shell side outlet of cooler connects the feed(raw material)inlet of return tank;
The liquid-phase outlet of return tank connects the spray inlet of described rectifier by reflux pump;
The bottom of described rectifying column is also provided with bypass outlet, and this bypass outlet connects reboiler, and the outlet of reboiler connects the reflux inlet of rectifying column.
The shell side outlet of described First Heat Exchanger connects the shell side of the second heat exchanger and the shell side of the 3rd heat exchanger successively, and the shell side outlet of the 3rd heat exchanger connects described extraneous upstream device.
Described reboiler is thermosyphon reboiler.
Compared with prior art, the utility model can remove the dimethyl ether in carbon after ether four totally, and extrusion rate reaches 99.9%, thereby has guaranteed to enter the purity of isooctane device or methyl ethyl ketone plant Raw, has effectively extended the service life of catalyst.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Figure 1, after this ether, the de-dimethyl ether system of carbon four comprises:
After ether, carbon four conveyance conduits 1 connect the tube side entrance of First Heat Exchanger 2, the tube side outlet of First Heat Exchanger 2 connects the feed(raw material)inlet of rectifying column 3, the tower bottom outlet of rectifying column connects the shell side entrance of described First Heat Exchanger 2, and the shell side outlet of First Heat Exchanger 2 connects extraneous upstream device;
The tower top outlet of rectifying column connects the shell side entrance of air cooler 4 and cooler 5 successively, and the shell side outlet of cooler 5 connects the feed(raw material)inlet of return tank 6;
The liquid-phase outlet of return tank 6 connects the spray inlet on described rectifying column 3 tops by reflux pump 7;
The bottom of described rectifying column 3 is also provided with bypass outlet, and this bypass outlet connects reboiler 8, and the outlet of reboiler 8 connects the reflux inlet of rectifying column 3.In the present embodiment, described reboiler 8 is thermosyphon reboiler.
After this ether, the operation principle of carbon four de-dimethyl ether systems is described below:
After the ether coming from isooctane carbon four raw material preprocessing devices, first carbon four raw materials are sent into First Heat Exchanger and are carried out heat exchange with the refining C4 from rectifying column, reclaim its heat and are sent into rectifying column middle feed entrance by behind in advance to 70～80 ℃.Refining carbon four enters the shell side of the second heat exchanger 10 and the shell side of the 3rd heat exchanger 9 more successively, delivers to extraneous upstream device (not shown) after recovery waste heat.
The overhead oil of the C4 component that contains the light components such as dimethyl ether, propane and unreacted hydrogen, other gasification is from rectifying tower top extraction, entering air cooler uses air as cooling medium, overhead oil vapour is cooled to 60 ℃ of left and right, most of C4 starts condensation, condensate liquid and not condensing enter cooler again and continue to be cooled to 48 ℃ of left and right with recirculated cooling water, condensate liquid is sent into return tank by potential difference, from the liquid-phase outlet of return tank, send, through reflux pump, deliver to the spray inlet of rectifier, as phegma spray, enter rectifying column.Fixed gas is mainly the light components such as hydrogen, dimethyl ether, propane, part C4, as fuel gas, from the gaseous phase outlet of return tank, sends, and enters fuel gas pipe network.
Reboiler is heat siphon type, and shell side adopts 0.5MPaG Steam Heating, after the C4 in pipe partly vaporizes, from the reflux inlet self-loopa of rectifying column, returns tower reactor.In tower reactor C4 raw material, contain a small amount of water, wherein the content of dimethyl ether is lower than 50ppm, as refining C4 product extraction, enter after First Heat Exchanger and ether after carbon four raw material heat exchange, again successively through the second heat exchanger and the 3rd heat exchanger heat exchange, be cooled to 45 ℃ of left and right, further recovery waste heat, sends into the refining C4 product storage tank in tank field and stores or directly supply isooctane device and methyl ethyl ketone plant.
Claims (3)
1. after ether, carbon four takes off dimethyl ether system, it is characterized in that comprising that carbon four conveyance conduits (1) after ether connect the tube side entrance of First Heat Exchangers (2), the tube side outlet of First Heat Exchanger (2) connects the feed(raw material)inlet of rectifying column (3), the tower bottom outlet of rectifying column connects the shell side entrance of described First Heat Exchanger (2), and the shell side outlet of First Heat Exchanger (2) connects extraneous upstream device;
The tower top outlet of described rectifying column connects the shell side entrance of air cooler (4) and cooler (5) successively, and the shell side outlet of cooler (5) connects the feed(raw material)inlet of return tank (6);
The liquid-phase outlet of return tank (6) connects the spray inlet on described rectifying column (3) top by reflux pump (7);
The bottom of described rectifying column (3) is also provided with bypass outlet, and this bypass outlet connects reboiler (8), and the outlet of reboiler (8) connects the reflux inlet of rectifying column (3).
2. after ether according to claim 1, carbon four takes off dimethyl ether system, the shell side outlet that it is characterized in that described First Heat Exchanger (2) connects the shell side of the second heat exchanger (10) and the shell side of the 3rd heat exchanger (9) successively, and the shell side outlet of the 3rd heat exchanger (9) connects described extraneous upstream device.
3. the de-dimethyl ether system of carbon four after ether according to claim 1 and 2, is characterized in that described reboiler (8) is thermosyphon reboiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420384042.5U CN203971433U (en) | 2014-07-11 | 2014-07-11 | The de-dimethyl ether system of carbon four after ether |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420384042.5U CN203971433U (en) | 2014-07-11 | 2014-07-11 | The de-dimethyl ether system of carbon four after ether |
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| CN203971433U true CN203971433U (en) | 2014-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110194711A (en) * | 2019-05-31 | 2019-09-03 | 山东东明石化集团有限公司 | After a kind of removing ether in carbon four and its butylene material isolated light component method |
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2014
- 2014-07-11 CN CN201420384042.5U patent/CN203971433U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110194711A (en) * | 2019-05-31 | 2019-09-03 | 山东东明石化集团有限公司 | After a kind of removing ether in carbon four and its butylene material isolated light component method |
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Address after: 315803 No. 168 Hongyuan Road, Qijiashan Street, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo Golden Hair New Materials Co., Ltd. Address before: 315801 No. 168 Hongyuan Road, Beilun District, Ningbo City, Zhejiang Province Patentee before: NINGBO HAIYUE NEW MATERIAL CO., LTD. |