CN216172170U - Improved carbonylation reactor - Google Patents
Improved carbonylation reactor Download PDFInfo
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- CN216172170U CN216172170U CN202122591930.7U CN202122591930U CN216172170U CN 216172170 U CN216172170 U CN 216172170U CN 202122591930 U CN202122591930 U CN 202122591930U CN 216172170 U CN216172170 U CN 216172170U
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Abstract
The utility model relates to an improved carbonylation reactor, which comprises a reactor body, wherein two tube plates are arranged above and below the reactor body, the reactor body is divided into three parts by the two tube plates, and the three parts are an upper tube box, a middle section and a lower tube box from top to bottom in sequence; the middle section is internally provided with a plurality of heat exchange tubes, the upper end of each heat exchange tube penetrates through a hole arranged on the upper tube plate and is fixedly connected with the upper tube plate, the lower end of each heat exchange tube penetrates through a hole arranged on the lower tube plate and is connected with the lower tube plate, the upper tube box is communicated with the lower tube box, a material gas inlet is arranged on the upper tube box, a synthesis gas outlet is arranged on the lower tube box, the middle section is respectively provided with a cooling medium inlet and a cooling medium outlet, a catalyst is filled in each heat exchange tube, a wire mesh is arranged in the lower tube box, and the wire mesh covers and seals the lower ports of all the heat exchange tubes; each heat exchange tube is also filled with a ceramic ball; the ceramic ball pad is arranged below the catalyst.
Description
Technical Field
The utility model relates to a reactor, in particular to an improved carbonylation reactor.
Background
The carbonylation reactor is the core equipment in the first step of the process of preparing the glycol by the coal with the two-step method. The raw material gas passes through the equipment to react, namely carbonylation, to generate an intermediate product DMO, and the DMO is hydrogenated in the second step and is further reacted to obtain the ethylene glycol.
In the existing carbonylation reactor, a lower tube box is filled with a ceramic ball, so that the catalyst is prevented from leaking out of the heat exchange tube. However, this method consumes a large amount of ceramic balls and is very inconvenient in replacing the catalyst.
Disclosure of Invention
In order to solve the above problems, the present invention provides an improved carbonylation reactor.
The technical scheme of the utility model is as follows:
an improved carbonylation reactor comprises a reactor body, wherein two tube plates are arranged above and below the reactor body, the reactor body is divided into three parts by the two tube plates, and the three parts are an upper tube box, a middle section and a lower tube box from top to bottom in sequence; the heat exchanger is characterized in that a wire mesh is arranged in the lower tube box and covers and seals lower ports of all the heat exchange tubes; each heat exchange tube is also filled with a ceramic ball; the ceramic ball pad is arranged below the catalyst.
A spiral snap spring is also arranged in each heat exchange tube; the spiral clamp spring expands and is clamped in the heat exchange tube and is padded below the porcelain ball; the spiral clamp spring is also supported on the silk screen.
A pressing plate is also arranged in the lower pipe box; the pressing plate is arranged below the silk screen in a cushioning mode, holes are formed in the pressing plate, the holes correspond to the lower ports of the heat exchange tubes one by one, and a plurality of bolts sequentially penetrate through the pressing plate and the silk screen and are connected with the lower tube plate to hang and fix the pressing plate and the silk screen.
An anti-impact baffle is arranged in the upper pipe box; the material gas inlet is located at the top of the upper pipe box, and the anti-impact baffle is located below the material gas inlet and opposite to the material gas inlet.
A plurality of baffle plates are arranged in the middle section; all the baffle plates are distributed in a staggered mode from bottom to form an S-shaped cooling medium flow channel, the upper end opening of the flow channel is connected with a cooling medium outlet, and the lower end opening of the flow channel is connected with a cooling medium inlet.
And an expansion joint is arranged in the middle of the middle section.
The reactor main body is formed by combining and connecting an upper elliptical head, an upper pipe box cylinder, a lower pipe box cylinder and a lower elliptical head; the upper tube box comprises an upper elliptical seal head, an upper tube box barrel and an upper tube plate, the middle section comprises a barrel, an upper tube plate and a lower tube plate, and the lower tube box comprises a lower elliptical seal head, a lower tube box barrel and a lower tube plate.
The side wall of the upper pipe box and the side wall of the lower pipe box are both provided with manholes.
The reactor body is supported and fixed on the group seat; the synthesis gas outlet is positioned at the bottom of the lower tube box, extends upwards into one section of the lower tube box and extends downwards through the side wall of the skirt.
And the lower tube box is also provided with a catalyst unloading port.
The utility model has the following beneficial effects:
1) the method for blocking the catalyst is changed from the original method of filling ceramic balls in the whole lower pipe box into the method of blocking by a wire mesh and a spring clamp. The method has simple structure, saves a large amount of ceramic balls and is very convenient to replace the catalyst.
2) A spiral spring clamp is used as a first barrier. The spiral spring clip is twisted to reduce the diameter and then is plugged into the heat exchange tube, and then the twisting force is removed, so that the diameter of the spiral spring clip is increased and is clamped on the tube wall to play a role in bearing the gravity of the catalyst. The spiral spring clip is very convenient and fast to install.
3) And the screen mesh and the spiral spring clamp are overlapped, so that the blocking of the catalyst is absolutely reliable.
4) The expansion joint is arranged in the middle of the middle section, so that the axial stress in the heat exchange tube and the stress in a welding seam of the tube head are greatly reduced, and the service life of the equipment can be effectively prolonged.
Drawings
FIG. 1 is a schematic diagram of an improved carbonylation reactor.
FIG. 2 is an enlarged view of section I of FIG. 1.
Fig. 3 is a schematic view of fig. 2A.
In the figure, a group seat 1, a catalyst unloading port 2, a lower elliptical head 3, a lower pipe box cylinder 4, a lower pipe plate 5, a cooling medium inlet 6, a cylinder 7, a baffle plate 8, an expansion joint 9, a cooling medium outlet 10, an upper pipe plate 11, a manhole 12, an upper pipe box cylinder 13, an upper elliptical head 14, an anti-impact baffle 15, a material gas inlet 16, a heat exchange pipe 17, a synthesis gas outlet 18, a catalyst 19, a ceramic ball 20, a spiral clamp spring 21, a wire mesh 22, a pressing plate 23 and a bolt 24 are arranged.
Detailed Description
As shown in fig. 1-3, an improved carbonylation reactor comprises a reactor body, wherein an upper tube plate 11 and a lower tube plate 5 are arranged in the reactor body, the reactor body is divided into three parts by the upper tube plate 11 and the lower tube plate 5, and the three parts are an upper tube box, a middle section and a lower tube box from top to bottom in sequence; a plurality of heat exchange tubes 17 are arranged in the middle section, the upper end of each heat exchange tube 17 penetrates through a hole formed in the upper tube plate 11 and is fixedly connected with the upper tube plate 11, the lower end of each heat exchange tube 17 penetrates through a hole formed in the lower tube plate 5 and is connected with the lower tube plate 5, the upper tube box is communicated with the lower tube box, a material gas inlet 16 is formed in the upper tube box, a synthesis gas outlet 18 is formed in the lower tube box, a cooling medium inlet 6 and a cooling medium outlet 10 are respectively formed in the middle section, a catalyst 19 is filled in each heat exchange tube 17, a wire mesh 22 is arranged in the lower tube box, and the wire mesh 22 covers and seals the lower ports of all the heat exchange tubes 17; each heat exchange tube 17 is also filled with a porcelain ball 20; the ceramic ball 20 is arranged below the catalyst 19; a spiral clamp spring 21 is also arranged in each heat exchange tube 17; the spiral clamp spring 21 expands and is clamped in the heat exchange tube 17 and is padded below the ceramic ball 20; the spiral clamp spring 21 is also supported on a silk screen 22; a pressing plate 23 is further arranged in the lower tube box; the pressing plate 23 is padded below the silk screen 22, holes are formed in the pressing plate, the holes correspond to the lower end ports of the heat exchange tubes 17 one by one, a plurality of bolts 24 sequentially penetrate through the pressing plate 23 and the silk screen 22 and are connected with the lower tube plate 5, and the pressing plate 23 and the silk screen 22 are hung and fixed; an anti-impact baffle 15 is arranged in the upper pipe box; the material gas inlet 16 is positioned at the top of the upper pipe box, and the impact-proof baffle 15 is positioned below the material gas inlet and is opposite to the material gas inlet; a plurality of baffle plates 8 are arranged in the middle section; all the baffle plates 8 are distributed in a staggered manner from bottom to form an S-shaped cooling medium flow channel, the upper end opening of the flow channel is connected with a cooling medium outlet 10, and the lower end opening of the flow channel is connected with a cooling medium inlet 6; the middle part of the middle section is provided with an expansion joint 9; the reactor main body is formed by combining and connecting an upper elliptical head 14, an upper pipe box cylinder 13, a cylinder 7, a lower pipe box cylinder 4 and a lower elliptical head 3; the upper tube box is composed of an upper elliptical seal head 14, an upper tube box cylinder 13 and an upper tube plate 11, the middle section is composed of a cylinder 7, an upper tube plate 11 and a lower tube plate 5, and the lower tube box is composed of a lower elliptical seal head 3, a lower tube box cylinder 4 and a lower tube plate 5; manholes 12 are formed in the side wall of the upper pipe box and the side wall of the lower pipe box; the reactor body is supported and fixed on the group seat 1; the synthesis gas outlet 18 is positioned at the bottom of the lower tube box, extends upwards into one section of the lower tube box, and extends downwards through the side wall of the skirt 1; the lower tube box is also provided with a catalyst discharging port 2.
When the improved carbonylation reactor is used, material gas is added from the material gas inlet, the material gas is uniformly filled in the upper tube box after being blocked by the anti-impact baffle, and the pressure energy and the kinetic energy at each position in the upper tube box are uniform, so that the flow in each heat exchange tube is uniform. The material gas in the upper tube box enters the heat exchange tube and flows downwards, and the material gas undergoes chemical reaction under the action of the catalyst to generate dimethyl oxalate (called carbonylation). The chemical reaction is exothermic, and the released heat is transferred to the outside of the heat exchange pipe and is taken away by a cooling medium outside the heat exchange pipe. When the material flows to the lower end of the heat exchange tube, chemical reaction is basically finished, the reacted gas is called synthesis gas, the synthesis gas flows through gaps among ceramic balls at the lower end of the heat exchange tube, passes through a wire mesh and enters a lower tube box, and then flows away from a synthesis gas outlet at the bottom. The cooling medium is added from the cooling medium inlet, passes through the gap between the heat exchange tubes by the S-shaped route under the action of the baffle plate to reach the upper part of the middle section, and then flows away from the cooling medium outlet. When the cooling medium flows through the gaps between the heat exchange tubes, heat exchange is carried out with the inside of the heat exchange tubes, that is, heat released by chemical reaction is absorbed and taken away.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. An improved carbonylation reactor comprises a reactor body, wherein two tube plates are arranged above and below the reactor body, the reactor body is divided into three parts by the two tube plates, and the three parts are an upper tube box, a middle section and a lower tube box from top to bottom in sequence; the heat exchanger is characterized in that a wire mesh is arranged in the lower tube box, and covers and seals lower ports of all the heat exchange tubes; each heat exchange tube is also filled with a ceramic ball; the ceramic ball pad is arranged below the catalyst.
2. An improved carbonylation reactor as claimed in claim 1 wherein each heat exchange tube further includes a helical circlip; the spiral clamp spring expands and is clamped in the heat exchange tube and is padded below the porcelain ball; the spiral clamp spring is also supported on the silk screen.
3. An improved carbonylation reactor as claimed in claim 2, wherein said lower channel further comprises a pressure plate mounted therein; the pressing plate is arranged below the silk screen in a cushioning mode, holes are formed in the pressing plate, the holes correspond to the lower ports of the heat exchange tubes one by one, and a plurality of bolts sequentially penetrate through the pressing plate and the silk screen and are connected with the lower tube plate to hang and fix the pressing plate and the silk screen.
4. An improved carbonylation reactor as claimed in claim 1, wherein said upper header incorporates an impingement baffle; the material gas inlet is located at the top of the upper pipe box, and the anti-impact baffle is located below the material gas inlet and opposite to the material gas inlet.
5. An improved carbonylation reactor as claimed in claim 1 wherein said intermediate section incorporates baffles; all the baffle plates are distributed in a staggered mode from bottom to form an S-shaped cooling medium flow channel, the upper end opening of the flow channel is connected with a cooling medium outlet, and the lower end opening of the flow channel is connected with a cooling medium inlet.
6. An improved carbonylation reactor as claimed in claim 1 wherein the intermediate section is provided with an expansion joint centrally located therein.
7. An improved carbonylation reactor as claimed in claim 1 wherein said reactor body is formed by connecting an upper elliptical head, an upper tubular box body, a tubular body, a lower tubular box body, and a lower elliptical head; the upper tube box comprises an upper elliptical seal head, an upper tube box barrel and an upper tube plate, the middle section comprises a barrel, an upper tube plate and a lower tube plate, and the lower tube box comprises a lower elliptical seal head, a lower tube box barrel and a lower tube plate.
8. An improved carbonylation reactor as claimed in claim 1 wherein the side walls of the upper and lower headers are provided with manholes.
9. An improved carbonylation reactor as claimed in claim 1 wherein the reactor body is supported on a cluster support; the synthesis gas outlet is positioned at the bottom of the lower tube box, extends upwards into one section of the lower tube box and extends downwards through the side wall of the skirt.
10. An improved carbonylation reactor as claimed in claim 1, wherein said lower channel is further provided with a catalyst discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122591930.7U CN216172170U (en) | 2021-10-27 | 2021-10-27 | Improved carbonylation reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122591930.7U CN216172170U (en) | 2021-10-27 | 2021-10-27 | Improved carbonylation reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216172170U true CN216172170U (en) | 2022-04-05 |
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ID=80890713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122591930.7U Active CN216172170U (en) | 2021-10-27 | 2021-10-27 | Improved carbonylation reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216172170U (en) |
-
2021
- 2021-10-27 CN CN202122591930.7U patent/CN216172170U/en active Active
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Address after: 9 Huaxing Road, Jiuhua Town, Rugao City, Nantong City, Jiangsu Province, 226500 Patentee after: Jiangsu Yongda Chemical Machinery Co.,Ltd. Address before: 9 Huaxing Road, Jiuhua Town, Rugao City, Nantong City, Jiangsu Province, 226500 Patentee before: JIANGSU YONGDA CHEMICAL MACHINERY CO.,LTD. |