CN201793510U - Structure for internal parts of urea synthesizer - Google Patents
Structure for internal parts of urea synthesizer Download PDFInfo
- Publication number
- CN201793510U CN201793510U CN2010201769333U CN201020176933U CN201793510U CN 201793510 U CN201793510 U CN 201793510U CN 2010201769333 U CN2010201769333 U CN 2010201769333U CN 201020176933 U CN201020176933 U CN 201020176933U CN 201793510 U CN201793510 U CN 201793510U
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- CN
- China
- Prior art keywords
- plate
- blender
- pipe core
- tube
- heat exchanging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Abstract
A structure for internal parts of a urea synthesizer comprises a mixer (1), a porous plate (2) and a tube nest heat exchanging section in the urea synthesizer (5). The tube nest heat exchanging section includes a central tube (7) and tube nests (6) which are arranged vertically, an outlet is arranged at the upper end of the central tube (7), an inlet is arranged at the lower end of the central tube (7), a partition plate (8) used for leading materials to flow from the bottom to the top of the central tube (7) is connected to the lower end of the central tube (7), the mixer (1) is arranged on the upper portion of the tube nest heat exchanging section and used for distributing the materials to enter all tube nests after the materials flow out of the central tube, and the porous plate (2) is radially mounted on the inner wall of the synthesizer (5) below the mixer (1). The structure is characterized in that a guide plate (3) is arranged between the porous plate (2) and the partition plate (8), the lower ends of the tube nests (6) sequentially penetrate through the porous plate (2) and the guide plate (3) to extend into an inner cavity of the synthesizer (5), and the inner cavity is arranged between the guide plate (3) and the partition plate (8). The flow direction of the materials is reasonably changed by arranging the guide plate, heat of media flowing inside and outside the heat exchanging tube nests of the internal parts of the synthesizer is sufficiently exchanged, and the purpose of balancing upper temperature and lower temperature is achieved.
Description
Technical field
The utility model relates to a kind of inner parts structure technical field of urea synthesizer.
Background technology
The medium and small urea plant of China adopts water solution total cycling method technology mostly, synthetic tower carbon dioxide conversion design theory value is about 63%, because the adjustment of load and the continuous expansion of throughput, the short minimizing of the residence time of material in synthetic tower, cause transformation efficiency to descend, unreacted reactant increases, and absorbs the also corresponding increase of load, thereby causes unit product consumption and cost to rise.It is exactly the solution that proposes at this problem that the patent No. is respectively 99233018.1 and 01210531.7 patent, and they reduce the material back-mixing to temperature of charge in the balanced synthetic tower, improves carbon dioxide conversion and all has certain effect.But all there is certain deficiency in the two, and the former be owing to will install at least 2 interchanger, and has many pipelines and synthetic tower to be interlinked to the outside, and complex structure is made to install and bothered, and cost is higher; Though latter's structure is simple relatively, because there is deficiency in material in the synthetic tower aspect heat exchange and back-mixing, cause its carbon dioxide conversion not reach ideal effect, the improvement of still needing of its structure.
Summary of the invention
Technical problem to be solved in the utility model is the inner parts structure that a kind of both simple in structure, low cost of manufacture is provided at above-mentioned prior art present situation and can fully improves a kind of urea synthesizer of carbon dioxide conversion.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the inner parts structure of this urea synthesizer, include blender, tubulation heat exchanging segment in porous plate and the synthetic tower, described tubulation heat exchanging segment comprises the pipe core and the tubulation of vertical setting, described pipe core upper end is outlet, and its lower end is import, the pipe core lower end is connected with and makes material from pipe core dividing plate from bottom to top, the blender that enters each tubulation is shunted after being provided with and making material go out pipe core in tubulation heat exchanging segment top, described porous plate radially is installed on the synthetic tower inwall of blender below, it is characterized in that: be provided with guide plate between described porous plate and dividing plate, the lower end of described each tubulation is passed porous plate successively, guide plate and stretching in the synthetic tower inner chamber between guide plate and the dividing plate.
As improvement, described blender also can be provided with the striking plate that prevents that material from carrying out erosion corrosion to the blender top when pipe core rises at the inner chamber end face.
Improve, the top board of described blender can be dismountable type and is connected with the blender side plate again, and described striking plate is installed on to export with pipe core and faces on the top board bottom surface of position.
Improve, the two half block plates that described porous plate can be designed to five equilibrium interconnect the one-piece construction that forms by web plate again.And can being made as two half block plates of five equilibrium, described guide plate interconnects the one-piece construction that forms by retaining plate.
Compared with prior art, advantage of the present utility model is:
1, by guide plate is set, rationally change flow direction of material, make the inside and outside mobile medium of heat exchanging pipe of ammonia converter internals fully carry out thermal exchange, reach the balanced purpose of temperature up and down, so that material reacts under the optimum temps state, thus in the finite space as far as possible near the molecular balance state;
2, by porous plate is set, and radially change porous plate perforate density and aperture along porous plate, and make material in synthetic tower, form rational flow curve, eliminate the trapping phenomena of material on the tower wall, the material back-mixing that minimizing causes because of the severe difference, thus keep maximum reaction impellent.
3, by the top blender is set, make that carbonic acid gas can fully be diffused in the liquid in the gas, improve speed of response, the material through one section reaction process can mix and reassign to every heat transfer tube as far as possible simultaneously, makes full use of heat interchanging area.
4, the top blender adopts removable structure, and striking plate is set, and reduces the erosion corrosion of rising material to the top top board, prolongs the work-ing life of blender, and where necessary, pulls down the top top board, can easily internals be checked and repair.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the enlarged view of I portion among Fig. 1;
Fig. 3 is the downward projection figure of porous plate among Fig. 1;
Fig. 4 is along the sectional view of A-A line among Fig. 3;
Fig. 5 is the downward projection figure of guide plate among Fig. 1;
Fig. 6 is along the sectional view of B-B line among Fig. 5.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Extremely shown in Figure 6 as Fig. 1, the inner parts structure of the urea synthesizer of present embodiment, include tubulation heat exchanging segment in blender 1, porous plate 2 and the synthetic tower 5, described tubulation heat exchanging segment comprises the pipe core 7 and the tubulation 6 of vertical setting, described pipe core 7 upper ends are outlet, and its lower end is import, pipe core 7 lower ends are connected with and make material from pipe core 7 dividing plate 8 from bottom to top, the blender 1 that enters each tubulation is shunted after being provided with and making material go out pipe core in tubulation heat exchanging segment top, and described porous plate 2 radially is installed on synthetic tower 5 inwalls of blender 1 below.Be provided with guide plate 3 between described porous plate 2 and dividing plate 8, the lower end of described each tubulation 6 is passed porous plate 2, guide plate 3 successively and is stretched in synthetic tower 5 inner chambers between guide plate 3 and the dividing plate 8.Blender 1 is provided with the striking plate 12 that prevents that material from carrying out erosion corrosion to blender 1 top when pipe core 6 rises at the inner chamber end face, the top board 11 of this blender 1 is connected with blender 1 side plate for dismountable type, and described striking plate 12 is installed on pipe core 7 outlets and faces on top board 11 bottom surfaces of position.Above-mentioned porous plate 2 interconnects the one-piece construction that forms for two half block plates of five equilibrium by web plate 21.And above-mentioned guide plate 3 interconnects the one-piece construction that forms for two half block plates of five equilibrium by retaining plate 31.
Material flow is in the urea synthesizer: carbonic acid gas, ammonia and first ammonium liquid enter from the synthetic tower bottom, enter comprehensive internals pipe core through several layers of eddy flow plate 4 backs by the bottom, material rises along pipe core and arrives comprehensive internals top blender, be evenly distributed in the heat exchanging pipe after mixing, drop to the bottom along heat exchanging pipe again and go out comprehensive internals, in the decline process with the pipe outside material carry out heat exchange, temperature rises, and then upwards flow by guide plate and porous plate respectively, in uphill process with the pipe in the material heat exchange, temperature descends, and goes out synthetic tower through behind several layers of tower tray at last.
Claims (5)
1. the inner parts structure of a urea synthesizer, include blender (1), tubulation heat exchanging segment in porous plate (2) and the synthetic tower (5), described tubulation heat exchanging segment comprises the pipe core (7) and the tubulation (6) of vertical setting, described pipe core (7) upper end is outlet, and its lower end is import, pipe core (7) lower end is connected with and makes material from pipe core (7) dividing plate (8) from bottom to top, the blender (1) that enters each tubulation is shunted after being provided with and making material go out pipe core in tubulation heat exchanging segment top, described porous plate (2) radially is installed on synthetic tower (5) inwall of blender (1) below, it is characterized in that: be provided with guide plate (3) between described porous plate (2) and dividing plate (8), the lower end of described each tubulation (6) is passed porous plate (2) successively, guide plate (3) and stretching in synthetic tower (5) inner chamber between guide plate (3) and the dividing plate (8).
2. inner parts structure according to claim 1 is characterized in that: described blender (1) is provided with the striking plate (12) that prevents that material from carrying out erosion corrosion to blender (1) top when pipe core (6) rises at the inner chamber end face.
3. inner parts structure according to claim 2, it is characterized in that: the top board (11) of described blender (1) is connected with blender (1) side plate for dismountable type, and described striking plate (12) is installed on and pipe core (7) outlet faces on top board (11) bottom surface of position.
4. according to the described inner parts structure of arbitrary claim in the claim 1 to 3, it is characterized in that: described porous plate (2) interconnects the one-piece construction that forms for two half block plates of five equilibrium by web plate (21).
5. according to the described inner parts structure of arbitrary claim in the claim 1 to 3, it is characterized in that: described guide plate (3) interconnects the one-piece construction that forms for two half block plates of five equilibrium by retaining plate (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201769333U CN201793510U (en) | 2010-04-27 | 2010-04-27 | Structure for internal parts of urea synthesizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201769333U CN201793510U (en) | 2010-04-27 | 2010-04-27 | Structure for internal parts of urea synthesizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201793510U true CN201793510U (en) | 2011-04-13 |
Family
ID=43848428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201769333U Expired - Fee Related CN201793510U (en) | 2010-04-27 | 2010-04-27 | Structure for internal parts of urea synthesizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201793510U (en) |
-
2010
- 2010-04-27 CN CN2010201769333U patent/CN201793510U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NINGBO JINYUANDONG PETROCHEMICAL ENGINEERING TECHN Free format text: FORMER NAME: NINGBO YUANDONG INDUSTRY TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 8, building 435, building E, creative Plaza, 315040 Jiangdong North Road, Ningbo, Zhejiang Patentee after: Ningbo Jinyuandong Petrochemical Engineering Technology Co., Ltd. Address before: 315010 A, block 12D, 168 Zhangs Road, Ningbo, Zhejiang Patentee before: Ningbo Yuandong Industry Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20190427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |