CN216296266U - Methyl acetate hydrogenation reactor - Google Patents
Methyl acetate hydrogenation reactor Download PDFInfo
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- CN216296266U CN216296266U CN202122743737.0U CN202122743737U CN216296266U CN 216296266 U CN216296266 U CN 216296266U CN 202122743737 U CN202122743737 U CN 202122743737U CN 216296266 U CN216296266 U CN 216296266U
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Abstract
The utility model relates to the technical field of ethanol synthesis, in particular to a methyl acetate hydrogenation reactor. The reaction gas collecting device comprises a cylinder body, wherein a gas distribution device is arranged in an upper end enclosure and communicated with a reaction gas inlet pipe, and a collecting device is arranged in a lower end enclosure and communicated with a reaction gas outlet pipe; each cooling water inlet is matched with a cooling water distribution pipe; each steam outlet is provided with a steam outlet pipe in a matching way; the gas distribution device comprises a short connecting cylinder coaxially arranged in the upper end enclosure, and swirl plates are uniformly distributed in the short connecting cylinder; the collecting device comprises a circular truncated cone-shaped collecting plate, and vertical kidney-shaped holes are uniformly formed in the side wall of the collecting plate; the cylindrical pipe and the flat pipe of the cooling water distribution pipe are communicated through a variable cross-section pipe; horizontal waist-shaped holes are uniformly formed in the bottoms and the middle parts of the flat tubes. Therefore, the utility model ensures that the reaction gas and the cooling water are uniformly distributed in the reactor, the reaction temperature is stable, the reaction is stable, the single-unit capacity of the reactor is larger, and the synthesis conversion rate is higher under the condition of full-load production.
Description
Technical Field
The utility model relates to the technical field of ethanol synthesis, and mainly relates to a methyl acetate hydrogenation reactor.
Background
At present, the similar reactor for producing ethanol in China generally adopts fixed tube plate heat exchanger type equipment, reaction raw material gas enters a tube reactor from the upper part, synthesis reaction is carried out under the action of a catalyst in the reaction tube, reaction heat is taken away by cooling water between the tubes, and a baffle plate with small holes is arranged at a reaction gas inlet. Because the reaction raw material gas is not uniformly distributed in the reaction tube, and the boiler feed water in the shell pass can not stably and timely carry away the reaction heat, the equipment can not realize large scale, the diameter of the equipment is less than or equal to 3800mm, and the capacity of a single unit is smaller.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model designs the methyl acetate hydrogenation reactor which is suitable for large-scale production devices.
The technical scheme is as follows:
a methyl acetate hydrogenation reactor comprises a cylinder body 1, wherein the bottom of the cylinder body 1 is vertically arranged and installed through a skirt; an upper tube plate 11 is arranged at the upper end of the cylinder body 1, a lower tube plate 12 is arranged at the lower end of the cylinder body 1, a catalyst layer 13 and an upper ceramic ball layer 14 are laid at the upper end of the upper tube plate 11, a lower ceramic ball layer 15 is laid at the lower end of the lower tube plate 12, vertical reaction tubes 16 are uniformly arranged between the upper tube plate 11 and the lower tube plate 12, an upper pipe orifice of each reaction tube 16 corresponds to the catalyst layer 13, and a lower pipe orifice corresponds to the lower ceramic ball layer 15;
an upper end enclosure is arranged at the upper end of the cylinder body 1, a lower end enclosure is arranged at the lower end of the cylinder body 1, a gas distribution device 21 is arranged in the upper end enclosure and communicated with a reaction gas inlet pipe 17, and a collection device 22 is arranged in the lower end enclosure and communicated with a reaction gas outlet pipe 18;
the lower part of the barrel body 1 is uniformly provided with more than four cooling water inlets in the same circumferential direction, and each cooling water inlet is provided with a cooling water distribution pipe 23 in a matching way; more than four steam outlets are uniformly formed in the upper part of the barrel 1 in the same circumferential direction, and each steam outlet is provided with a steam outlet pipe 19 in a matching manner;
the gas distribution device 21 comprises a short connection cylinder 211, the short connection cylinder 211 is coaxially arranged in the upper end enclosure, swirl plates 212 are uniformly distributed in the short connection cylinder 211, a sealing plate 213 is horizontally arranged at the upper end of the short connection cylinder 211, and air holes which are distributed in a square shape are uniformly formed in the sealing plate 213;
the collecting device 22 comprises a circular truncated cone-shaped collecting plate 221, the collecting plate 221 is coaxially arranged in the lower end enclosure, and vertical kidney-shaped holes 222 are uniformly formed in the side wall of the collecting plate 221;
the cooling water distribution pipe 23 correspondingly positioned outside the cylinder body 1 is a cylindrical pipe, the cooling water distribution pipe 23 correspondingly positioned in the cylinder body 1 is a flat pipe which is flattened vertically, and the cylindrical pipe and the flat pipe are communicated through a variable cross-section pipe;
horizontal waist-shaped holes 232 are uniformly formed in the bottoms and the middle of the flat tubes, so that cooling water is uniformly distributed in the shell pass.
Further, correspond lower porcelain ball layer 15 that is located the low head and be head porcelain ball layer, and head porcelain ball layer covers collecting plate 221 top, correspond the lower porcelain ball layer 15 that is located tube sheet 12 bottom down and be barrel porcelain ball layer, and the porcelain ball particle diameter on head porcelain ball layer is greater than the porcelain ball particle diameter on barrel porcelain ball layer for reactant in the barrel tube side filters through lower porcelain ball layer 15 earlier, passes through vertical waist type hole 222 to reaction gas outlet pipe 18 afterwards.
Further, the bottom of the collecting plate 221 is fixedly connected with the inner side wall of the corresponding lower end socket through a connecting sleeve 223, and a flow guide hole 224 is formed in the side wall of the bottom of the collecting plate 221.
Further, 6 cooling water inlets are uniformly formed in the same circumference of the lower portion of the barrel body 1, each cooling water inlet is provided with a cooling water distribution pipe 23 in a matched mode, and each cooling water distribution pipe 23 horizontally extends into the barrel body 1 by 0.2-0.3 times of the diameter of the barrel body 1.
Further, the lower end of each cooling water distribution pipe 23 in the cylinder is provided with more than one support plate 231, and the support plates 231 are vertically fixed on the upper tube plate 11.
The utility model has the following beneficial technical effects:
according to the methyl acetate hydrogenation reactor, reaction gas enters the upper end enclosure and can be uniformly distributed for the first time through the gas distribution device, then is uniformly distributed for the second time through the catalyst layer and the upper ceramic ball layer, and finally enters the reaction tube, so that the synthesis reaction in the tube pass of the cylinder body is stably and fully carried out;
the cooling water distribution pipe outside the cylinder body is a cylindrical pipe, the cooling water distribution pipe correspondingly positioned in the cylinder body is a flat pipe which is flattened vertically, the cylindrical pipe and the flat pipe are communicated through a variable cross-section pipe, horizontal waist-shaped holes are uniformly formed in the bottom and the middle of the flat pipe, and cooling water is uniformly distributed in the shell pass of the cylinder body, so that the reaction heat of the tube pass of the cylinder body is taken away;
the collecting device comprises a circular truncated cone-shaped collecting plate, vertical kidney-shaped holes are uniformly formed in the side wall of the collecting plate, and reactants in the tube pass of the cylinder are filtered by the lower ceramic ball layer and then flow to the reaction gas outlet pipe through the vertical kidney-shaped holes;
therefore, the methyl acetate hydrogenation reactor can ensure that the reaction is stable, the reaction heat energy is taken away in time, the byproduct steam is collected efficiently, the large scale of a single device can be realized, the maximum diameter of the cylinder body can be 6000-; the reaction is more complete, and the conversion rate of the reactor under the full load condition can be improved by 15-20%.
Drawings
FIG. 1 is a schematic structural diagram of a methyl acetate hydrogenation reactor according to the present invention.
FIG. 2 is a schematic view of the structure of the gas distribution apparatus of the present invention.
Fig. 3 is a top view of fig. 2.
Fig. 4 is an enlarged view of a portion i of fig. 3.
FIG. 5 is a schematic view of the structure of the cooling water distribution pipe of the present invention.
Fig. 6 is a sectional view B-B of fig. 5.
Fig. 7 is a schematic structural view of the collecting device of the present invention.
Wherein: 1 cylinder, 11 upper tube plate, 12 lower tube plate, 13 catalyst layer, 14 upper ceramic ball layer, 15 lower ceramic ball layer, 16 reaction tube, 17 reaction gas inlet tube, 18 reaction gas outlet tube, 19 steam outlet tube, 21 gas distribution device, 211 short connecting tube, 212 cyclone plate, 213 closing plate, 22 collection device, 221 collection plate, 222 vertical kidney-shaped hole, 223 connecting sleeve, 224 diversion hole, 23 cooling water distribution tube, support plate 231 and horizontal kidney-shaped hole 232.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
Examples
Referring to fig. 1, the methyl acetate hydrogenation reactor comprises a cylinder body 1, wherein the bottom of the cylinder body 1 is vertically arranged and installed through a skirt; an upper tube plate 11 is arranged at the upper end of the cylinder body 1, a lower tube plate 12 is arranged at the lower end of the cylinder body 1, a catalyst layer 13 and an upper ceramic ball layer 14 are laid at the upper end of the upper tube plate 11, a lower ceramic ball layer 15 is laid at the lower end of the lower tube plate 12, vertical reaction tubes 16 are uniformly arranged between the upper tube plate 11 and the lower tube plate 12, an upper pipe orifice of each reaction tube 16 corresponds to the catalyst layer 13, and a lower pipe orifice corresponds to the lower ceramic ball layer 15; in the embodiment, the H/Di can be 3: 1-3: 2 (H is the length of the reaction tube 16, and Di is the diameter of the cylinder), the length of the reaction tube 16 is 12m, and the inner diameter of the cylinder is 6 m-8 m (under the condition of transportation conditions), so that the method can be suitable for large-scale production devices.
An upper end enclosure is arranged at the upper end of the cylinder body 1, a lower end enclosure is arranged at the lower end of the cylinder body 1, a gas distribution device 21 is arranged in the upper end enclosure and communicated with a reaction gas inlet pipe 17, and a collection device 22 is arranged in the lower end enclosure and communicated with a reaction gas outlet pipe 18;
the lower part of the barrel body 1 is uniformly provided with more than four cooling water inlets in the same circumferential direction, and each cooling water inlet is provided with a cooling water distribution pipe 23 in a matching way; more than four steam outlets are uniformly formed in the upper part of the barrel 1 in the same circumferential direction, and each steam outlet is provided with a steam outlet pipe 19 in a matching manner;
referring to fig. 2 to 4, the gas distribution device 21 includes a short connection cylinder 211, the short connection cylinder 211 is coaxially arranged in the upper seal head, swirl plates 212 are uniformly distributed in the short connection cylinder 211, a seal plate 213 is horizontally arranged at the upper end of the short connection cylinder 211, and air holes are uniformly formed in the seal plate 213 and are in square distribution;
referring to fig. 7, the collecting device 22 includes a collecting plate 221 in the shape of a circular truncated cone, the collecting plate 221 is coaxially disposed in the lower head, vertical kidney-shaped holes 222 are uniformly formed in the side wall of the collecting plate 221, and the vertical kidney-shaped holes 222 are distributed in a triangular shape.
Referring to fig. 5 and 6, the cooling water distribution pipe 23 corresponding to the outside of the cylinder 1 is a cylindrical pipe, the cooling water distribution pipe 23 corresponding to the inside of the cylinder 1 is a flat pipe which is flattened vertically, and the cylindrical pipe and the flat pipe are communicated through a variable cross-section pipe;
horizontal waist-shaped holes 232 are uniformly formed in the bottoms and the middle of the flat tubes, so that cooling water is uniformly distributed in the shell pass.
The lower porcelain ball layer 15 that corresponds to be located the low head is head porcelain ball layer, and head porcelain ball layer covers collecting plate 221 top, and the lower porcelain ball layer 15 that corresponds to be located tube sheet 12 bottom down is barrel porcelain ball layer, and the porcelain ball particle diameter on head porcelain ball layer is greater than the porcelain ball particle diameter on barrel porcelain ball layer for reactant in the barrel tube side filters through lower porcelain ball layer 15 earlier, passes through vertical waist type hole 222 to reaction gas outlet pipe 18 afterwards.
The bottom of the collecting plate 221 is fixedly connected with the inner side wall of the corresponding lower end socket through a connecting sleeve 223, and a flow guide hole 224 is formed in the side wall of the bottom of the collecting plate 221.
The same week of lower part of barrel 1 upwards has evenly seted up 6 cooling water inlets, and every cooling water inlet cooperation is equipped with cooling water distribution pipe 23, and every cooling water distribution pipe 23 corresponds the level and stretches into length in the barrel 1 is 0.2~0.3 times of barrel 1 diameter.
The lower end of each cooling water distribution pipe 23 in the cylinder is provided with more than one support plate 231, and the support plates 231 are vertically fixed on the upper tube plate 11.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A methyl acetate hydrogenation reactor comprises a cylinder body (1), wherein the bottom of the cylinder body (1) is vertically arranged and installed through a skirt; an upper tube plate (11) is arranged at the upper end of the barrel (1), a lower tube plate (12) is arranged at the lower end of the barrel, a catalyst layer (13) and an upper ceramic ball layer (14) are laid at the upper end of the upper tube plate (11), a lower ceramic ball layer (15) is laid at the lower end of the lower tube plate (12), vertical reaction tubes (16) are uniformly arranged between the upper tube plate (11) and the lower tube plate (12), an upper tube opening of each reaction tube (16) corresponds to the catalyst layer (13), and a lower tube opening corresponds to the lower ceramic ball layer (15);
an upper end enclosure is arranged at the upper end of the cylinder body (1), a lower end enclosure is arranged at the lower end of the cylinder body (1), a gas distribution device (21) is arranged in the upper end enclosure and communicated with a reaction gas inlet pipe (17), and a collection device (22) is arranged in the lower end enclosure and communicated with a reaction gas outlet pipe (18);
more than four cooling water inlets are uniformly formed in the same circumferential direction at the lower part of the barrel body (1), and each cooling water inlet is provided with a cooling water distribution pipe (23) in a matching manner; more than four steam outlets are uniformly formed in the upper part of the barrel body (1) in the same circumferential direction, and each steam outlet is provided with a steam outlet pipe (19) in a matching manner;
the method is characterized in that: the gas distribution device (21) comprises a short connecting cylinder (211), the short connecting cylinder (211) is coaxially arranged in the upper seal head, swirl plates (212) are uniformly distributed in the short connecting cylinder (211), a sealing plate (213) is horizontally arranged at the upper end of the short connecting cylinder (211), and air holes which are distributed in a square shape are uniformly formed in the sealing plate (213);
the collecting device (22) comprises a circular truncated cone-shaped collecting plate (221), the collecting plate (221) is coaxially arranged in the lower end enclosure, and vertical kidney-shaped holes (222) are uniformly formed in the side wall of the collecting plate (221);
the cooling water distribution pipe (23) correspondingly positioned outside the cylinder body (1) is a cylindrical pipe, the cooling water distribution pipe (23) correspondingly positioned in the cylinder body (1) is a flat pipe which is flattened vertically, and the cylindrical pipe and the flat pipe are communicated through a variable cross-section pipe;
horizontal waist-shaped holes (232) are uniformly formed in the bottoms and the middle of the flat tubes, so that cooling water is uniformly distributed in a shell pass.
2. A methyl acetate hydrogenation reactor as claimed in claim 1 wherein: the lower porcelain ball layer (15) that is located the low head correspondingly is head porcelain ball layer, and head porcelain ball layer covers collecting plate (221) top, and lower porcelain ball layer (15) that is located tube sheet (12) bottom down correspondingly is barrel porcelain ball layer, and the porcelain ball particle diameter on head porcelain ball layer is greater than the porcelain ball particle diameter on barrel porcelain ball layer for reactant in the barrel tube side filters through porcelain ball layer (15) down earlier, passes through vertical waist type hole (222) to reaction gas outlet pipe (18) afterwards.
3. A methyl acetate hydrogenation reactor as claimed in claim 1 wherein: the bottom of the collecting plate (221) is fixedly connected with the inner side wall of the corresponding lower end socket through a connecting sleeve (223), and a flow guide hole (224) is formed in the side wall of the bottom of the collecting plate (221).
4. A methyl acetate hydrogenation reactor as claimed in claim 1 wherein: the same week of lower part of barrel (1) upwards evenly seted up 6 cooling water inlets, every cooling water inlet cooperation is equipped with cooling water distributing pipe (23), and every cooling water distributing pipe (23) corresponds the level and stretches into length in barrel (1) is 0.2~0.3 times of barrel (1) diameter.
5. A methyl acetate hydrogenation reactor as claimed in claim 1 wherein: the lower end of each cooling water distribution pipe (23) in the cylinder body is provided with more than one support plate (231), and the support plates (231) are vertically fixed on the upper tube plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122743737.0U CN216296266U (en) | 2021-11-10 | 2021-11-10 | Methyl acetate hydrogenation reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122743737.0U CN216296266U (en) | 2021-11-10 | 2021-11-10 | Methyl acetate hydrogenation reactor |
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| Publication Number | Publication Date |
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| CN216296266U true CN216296266U (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122743737.0U Active CN216296266U (en) | 2021-11-10 | 2021-11-10 | Methyl acetate hydrogenation reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116078275A (en) * | 2023-01-03 | 2023-05-09 | 东方电气集团东方锅炉股份有限公司 | High-efficiency gas distributor and vertical large-scale reactor |
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2021
- 2021-11-10 CN CN202122743737.0U patent/CN216296266U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116078275A (en) * | 2023-01-03 | 2023-05-09 | 东方电气集团东方锅炉股份有限公司 | High-efficiency gas distributor and vertical large-scale reactor |
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