CN201684582U - Grid plate structure of vinyl acetate reactor - Google Patents
Grid plate structure of vinyl acetate reactor Download PDFInfo
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- CN201684582U CN201684582U CN2010201919006U CN201020191900U CN201684582U CN 201684582 U CN201684582 U CN 201684582U CN 2010201919006 U CN2010201919006 U CN 2010201919006U CN 201020191900 U CN201020191900 U CN 201020191900U CN 201684582 U CN201684582 U CN 201684582U
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- reactor
- grid plate
- vinyl acetate
- screen
- plate structure
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Abstract
The utility model relates to a grid plate structure of a vinyl acetate reactor, which comprises an upper seal head (3), a grid plate (14) and a reactor shell (15). The utility model is characterized in that the grid plate (14) is an integrated stainless steel grid plate. The heat removing capability of the reactor is improved by 30 percent, the yield of vinyl acetate is increased to 14 thousand tons/year from 10 thousand tons/year, the impurities of reaction products are reduced by 7 percent, simultaneously, the coking degree of a catalyst bed is improved and the opening and closing mode of the grid plate is changed, and thereby, the loading and unloading difficulty of a catalyst is reduced, the replacement time of the catalyst is ensured and the safe and stable full-load production of the reactor is ensured.
Description
Technical field
The utility model relates to a kind of reactor that vinyl acetate is produced that is used for, and relates in particular to a kind of grid plate structure that adopts acetylene method Fixed Bed Gas Phase vinyl acetate reactor.
Background technology
Producing vinyl acetate by acetylene method is that the active carbon with the load zinc acetate is a catalyst, acetylene and acetic acid are raw material, after being preheating to uniform temperature, enter and carry out gas-solid reaction in the reactor, 160～220 ℃ of reaction temperature controls, reaction pressure is at 20～40KPa (G), the acetic acid conversion ratio is 30～80%, and unreacted acetylene recycles after removing impurity through cooling, washing, separation.This reaction is exothermic reaction, and the reaction liberated heat is by reaction product stream and remove thermal medium and take away.The nucleus equipment of producing vinyl acetate by acetylene method-vinyl acetate synthesis reactor, present employed fixed bed reactors separate unit device vinyl acetate yearly productive capacity is 10,000 tons, the reaction liberated heat is taken away by conduction oil and reaction gas flow, conduction oil is flowed into by an import that is arranged on reactor lower part, flows out from the outlet that is arranged on reactor top.Along with continuous progress in science and technology and the active higher catalyst of use, some shortcomings of this reactor come out gradually, show that mainly production capacity is less, reaction product quality descends, unload catalyst difficulty etc.
The utility model content
The purpose of this utility model is to provide a kind of reactor that loads and unloads convenient catalyst.
The purpose of this utility model is achieved through the following technical solutions: a kind of grid plate structure of vinyl acetate reactor, comprise upper cover, and screen, reactor shell is characterized in that: described screen is a monoblock type.
For prolonging the service life of screen, described screen is the stainless steel screen.
For ease of the dismounting of screen, described screen is fixed on the bottom of described lower perforated plate removably.
For further being convenient to dismantle screen, described screen and described lower perforated plate are bolted to connection.
Because screen is designed to monoblock type, therefore for further being convenient to dismantle screen, the grid plate structure of this vinyl acetate reactor also comprises the device of the described screen of liftable.
Described device is included in lower channel on the steel wire rope of uniform setting in the described reactor shell, is provided with three as uniform; The steel wire rope that one end is connected with described screen, the device that described steel wire rope is moved up and down that the top of lower channel is provided with on the described steel wire rope.
The described device that steel wire rope is moved up and down can be cucurbit, and described cucurbit can be an electric block, also can be bottle gouard moved by hands; The described device that steel wire rope is moved up and down also can be a fixed pulley, or other can play the device of similar functions.
After described screen is unloaded the individual strong point is arranged, thereby conveniently unload catalyst, prevent that also steel wire rope is stressed for a long time simultaneously, the bottom of described reactor enclosure intracoelomic cavity is provided with the gripper shoe that can support described screen.
In order further to be convenient to more catalyst changeout, connect by flange between described upper cover and the described reactor shell.
The beneficial effects of the utility model are:
(1) because described screen is a monoblock type, therefore can effectively reduces screen, thereby make things convenient for the dismounting of screen and the installation that resets because of the deformation quantity that is corroded or thermal deformation produces;
(2) because described screen is the stainless steel screen, therefore can alleviates screen and be corroded by acetic acid;
(3) because described screen is fixed on the bottom of described lower perforated plate removably, therefore can be easily catalyst changeout more;
(4) because described screen and described lower perforated plate are bolted to connection, so the syndeton of screen and lower perforated plate is simple, the dismounting of screen and reset easy for installation;
(5) because reactor also comprises the device of the described screen of liftable, therefore more catalyst changeout is more convenient;
(6) because described device is included in lower channel on the steel wire rope of uniform setting in the described reactor shell; The steel wire rope that one end is connected with described screen, the device that described steel wire rope is moved up and down that the top of lower channel is provided with on the described steel wire rope, the described device that steel wire rope is moved up and down can be cucurbit, described cucurbit can be an electric block, it also can be bottle gouard moved by hands, the described device that steel wire rope is moved up and down also can be a fixed pulley, or other can play the device of similar functions, and therefore described lifting device structure is simple.
(7) because the bottom of described reactor enclosure intracoelomic cavity is provided with the gripper shoe that can support described screen, therefore more convenient operation during catalyst changeout more;
(8) because, connect by flange between described upper cover and the described reactor shell, therefore can dismantle easily and the upper cover that resets, more catalyst changeout is more convenient thereby make.
In a word,, shortened the replacing time of catalyst, guaranteed reactor safety, stable, full production because above structure changes the switching mode of screen, thereby reduced the catalyst loading and unloading difficulty.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1;
Fig. 3 is that the G of Fig. 2 is to view;
Fig. 4 is the B-B sectional structure schematic diagram of Fig. 1;
Fig. 5 is that the H of Fig. 4 is to view;
Fig. 6 is that the C of Fig. 1 is to view;
Fig. 7 is the E-E cutaway view;
Fig. 8 is that the D of Fig. 1 is to view;
Fig. 9 is the F-F cutaway view of Fig. 8.
The specific embodiment
Embodiment 1: to (arrow is represented the flow direction of conduction oil among Fig. 2 to Fig. 5) shown in Figure 9, a kind of grid plate structure of vinyl acetate reactor comprises air inlet pipe 1 as Fig. 1; Reaction tube 10, the equivalent internal diameter of described reaction tube 10 is 40mm, length is 5m, adds up to 4500 (not shown)s; The upper perforated plate 6 and the lower perforated plate 13 that are used for device support and sealing, described upper perforated plate 6 and lower perforated plate 13 and described reaction tube 10 are by pasting weldering and be connected with expand tube and seal (not shown); Reactor shell 15 cylindraceous; Central area in the described reactor shell 15 is provided with not cloth area under control 17; Be provided with a heat conductive oil inlet 12a and 12b respectively in relative both sides, described reactor shell 15 bottoms, be provided with a conduction oil outlet 5a and 5b in relative both sides, described reactor shell 15 bottoms respectively; Corresponding described heat conductive oil inlet place, the bottom of described reactor shell 15 is made of internal layer shell 15a and outer casing 15b, constitutes an annular oil-feed cavity 24a (as shown in Figures 2 and 3) between described internal layer shell 15a and the described outer casing 15b; Described internal layer shell 15a is provided with several uniform circular fuel feed hole 18a;
In described oil-feed cavity 24a and be provided with dividing plate 23a with described two heat conductive oil inlet 12a and 12b equidistant; Corresponding described conduction oil exit, the top of described reactor shell 15 is made of internal layer shell 15a and outer casing 15b, constitutes the fuel-displaced cavity 24b of annular between described internal layer shell 15a and the described outer casing 15b; Described internal layer shell 15a is provided with some uniform circular oil outlet 18b (as shown in Figure 4 and Figure 5); In described fuel-displaced cavity 24b and be provided with dividing plate 23b with described two conduction oils outlet 5a and 5b equidistant; Be provided with distribution grid 7, middle distribution grid 8 and following distribution grid on the conduction oil of circle that inner chamber with described reactor shell 15 is divided into four parts in the described reactor shell 15, described each conduction oil distribution grid is provided with some distributions hole 20; The shape in described distribution hole 20 is corresponding with the contour shape of described reaction tube 10; Described reaction tube 10 passes described conduction oil distribution grid (as Fig. 6 to shown in Figure 9, but not expressing whole distribution holes) by described distribution hole 20; The gap (not shown) that 1～3mm is arranged between described conduction oil distribution grid and the described reaction tube 10; 17 places, distribution grid 7 corresponding described not cloth areas under control are provided with through hole 25 on the described conduction oil, and the structure and the last distribution grid of described distribution grid 9 down are identical; Distribution grid 8 corresponding described not cloth areas under control 17 are provided with some apertures 26 in described, and the equivalent diameter of described aperture 26 is less than the equivalent diameter (as shown in Figure 6 and Figure 7) in described distribution hole 20; The top of described reactor shell 15 is provided with and its oval-shaped upper cover 3 that is connected by flange 4, the center of top of described upper cover 3 also is provided with the conical gas distributor 2 that is connected with described reactor shell 15, the other end of described conical gas distributor 2 is connected with described air inlet pipe 1, described air inlet pipe 1 be provided with described conical gas distributor 2 directly over, the two is by connecting by flange 19; Described conical gas distributor 2 is provided with 4 layers of tapered sleeve in 90 ° scope; Described reactor also comprises monoblock type stainless steel screen 14, and described screen 14 is bolted to connection with described lower perforated plate 13; The grid plate structure of this vinyl acetate reactor also comprises the device 100 of the described screen 14 of liftable, described device 100 is included in lower channel 11 on three steel wire ropes of uniform settings in the described reactor shell 15, the steel wire rope 22 that one end is connected with described screen 14, the device 21 that described steel wire rope 22 is moved up and down that the top of lower channel 11 is provided with on the described steel wire rope, described device 21 is an electric block; The bottom of described reactor shell 15 inner chambers is provided with the gripper shoe 16 that can support described screen 14.
During the utility model work, unstrpped gas enters in the reaction tube 10 through conical gas distributor 2 from air inlet 1, vinyl acetate is produced in reaction under the catalytic action of the catalyst in placing described reaction tube 10, and vinyl acetate and unreacted tail gas completely enter the subsequent handling processing by gas outlet 26.Simultaneously, conduction oil enters in the annular oil-feed cavity 24a from heat conductive oil inlet 12a and 12b, enter the inner chamber of reactor shell 15 by the fuel feed hole 18a on the internal layer shell 15a, under the effect of flowing pressure, upwards flow, by the distribution hole 20 on the conduction oil distribution grid and up and down through hole 25 and the aperture 26 on the middle distribution grid on the distribution grid enter annular fuel-displaced cavity 24b then from conduction oil flow export 5a and 5b outflow reactor through oil-out 18b.Therefore in the production process of vinyl acetate, reaction heat is taken reactor out of by conduction oil and gas.When needing more catalyst changeout, screen 14 is disassembled from lower perforated plate 13, lifting by control steel wire rope 22 places on the gripper shoe 16 screen, catalyst is unloaded from reaction tube 10, then screen 14 is risen, then itself and lower perforated plate 13 are bolted to connection, catalyst is packed into from the upper opening of tubulation 10 gets final product at last.
The utility model includes but not limited to the above specific embodiment, as long as the screen of described reactor is a monoblock type, all drops in the protection domain of the present utility model.
Claims (9)
1. the grid plate structure of a vinyl acetate reactor comprises upper cover (3), screen (14), and reactor shell (15) is characterized in that: described screen (14) is a monoblock type.
2. the grid plate structure of vinyl acetate reactor as claimed in claim 1 is characterized in that: described screen (14) is fixed on the bottom of described lower perforated plate (13) removably.
3. the grid plate structure of vinyl acetate reactor as claimed in claim 2 is characterized in that: described screen (14) is bolted to connection with described lower perforated plate (13).
4. as the grid plate structure of claim 1,2 or 3 described vinyl acetate reactors, it is characterized in that: this structure also comprises the device (100) of the described screen of liftable (14).
5. the grid plate structure of vinyl acetate reactor as claimed in claim 4, it is characterized in that: described device (100) is included in lower channel (11) on the steel wire rope of uniform setting in the described reactor shell (15), the steel wire rope (22) that one end is connected with described screen (14), the device (21) that described steel wire rope (22) is moved up and down that the top of lower channel on the described steel wire rope (11) is provided with
6. the grid plate structure of vinyl acetate reactor as claimed in claim 5 is characterized in that: lower channel on the described steel wire rope (11) is three; The described device (21) that steel wire rope (22) is moved up and down is cucurbit.
7. the grid plate structure of vinyl acetate reactor as claimed in claim 6 is characterized in that: the bottom of described reactor shell (15) inner chamber is provided with the gripper shoe (16) that can support described screen (14).
8. the grid plate structure of vinyl acetate reactor as claimed in claim 7 is characterized in that: connect by flange (4) between described upper cover (3) and the described reactor shell (15).
9. the grid plate structure of vinyl acetate reactor as claimed in claim 8 is characterized in that: described screen (14) is the stainless steel screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201919006U CN201684582U (en) | 2010-05-14 | 2010-05-14 | Grid plate structure of vinyl acetate reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201919006U CN201684582U (en) | 2010-05-14 | 2010-05-14 | Grid plate structure of vinyl acetate reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201684582U true CN201684582U (en) | 2010-12-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201919006U Expired - Lifetime CN201684582U (en) | 2010-05-14 | 2010-05-14 | Grid plate structure of vinyl acetate reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201684582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925112A (en) * | 2017-04-26 | 2017-07-07 | 安徽瑞邦生物科技有限公司 | Tail gas from incinerator processing system |
-
2010
- 2010-05-14 CN CN2010201919006U patent/CN201684582U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925112A (en) * | 2017-04-26 | 2017-07-07 | 安徽瑞邦生物科技有限公司 | Tail gas from incinerator processing system |
| CN106925112B (en) * | 2017-04-26 | 2022-12-27 | 安徽瑞邦生物科技有限公司 | Incinerator tail gas treatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 401254 Changshou District of Chongqing Weijianglu No. 36 Co-patentee after: East China University of Science and Technology Patentee after: Sinopec group Chuanwei Chongqing Chemical Industry Co. Ltd. Address before: 401254 Changshou District of Chongqing Weijianglu No. 36 Co-patentee before: East China University of Science and Technology Patentee before: Sichuan Vinylon Plant. SINOPEC |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101229 |
|
| CX01 | Expiry of patent term |