CN204429253U - Ammonoxidizing fluid bed twin-stage distribution apparatus - Google Patents
Ammonoxidizing fluid bed twin-stage distribution apparatus Download PDFInfo
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- CN204429253U CN204429253U CN201420862936.0U CN201420862936U CN204429253U CN 204429253 U CN204429253 U CN 204429253U CN 201420862936 U CN201420862936 U CN 201420862936U CN 204429253 U CN204429253 U CN 204429253U
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Abstract
The utility model relates to a kind of ammonoxidizing fluid bed twin-stage distribution apparatus, it comprises fluidized-bed reactor body (1), described fluidized-bed reactor body (1) bottom is provided with ammonia and meta-xylene vaporization material import (3), air intlet (4), described ammonia and meta-xylene vaporization expect that import (3) and air intlet (4) top are provided with the first distribution grid (2), it is characterized in that: 3.6 ± 0.5m place, described first distribution grid (2) top is provided with the second distribution grid (5).The ammonoxidizing fluid bed twin-stage distribution apparatus of the utility model,
equipment improvement can be carried out on existing production process basis, reduce the independent subtractive process of isophthalodinitrile, optimized production process, reduce production cost.
improve the yield of product, reduce impurity content, final production goes out the isophthalodinitrile of high-quality.
Description
Technical field
The utility model relates to a kind of ammonoxidizing fluid bed twin-stage distribution apparatus.
Background technology
Fluidized-bed reactor is that one utilizes gas or liquid to be made solid particle be in suspended motion state by granular solids, the reactor of go forward side by side promoting the circulation of qi solid phase reaction process or liquid and solid phase reaction process.In production process of isophthalic lumichrome nitrile, primary raw material is ammonia and meta-xylene, and its production technology meta-xylene and ammonia is occurred ammoxidation reaction in fluid bed generate isophthalodinitrile.
As shown in Figure 1, enter fluid bed through vaporizer after ammonia and meta-xylene vaporization, under the effect of high temperature and catalyst, carry out ammoxidation reaction above distribution grid, product enters thin-walled collector through oil cooler and carries out cooling rewinding original production process.Distribution grid has the effect being uniformly distributed air-flow, and its pressure drop is simultaneously little.There is such problem in original production process: the direct effect scope of distribution grid to whole fluid bed is limited.During reaction, catalyst suspends and is uniformly distributed the sparse dispersion distribution in about 3.6m, more than 3.6m region on distribution grid, region, this situation raw material fully do not react, the product quality that result in production is not good, and yield is also low, also add product purification process simultaneously.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of and improves the utilization rate of raw material, can produce the ammonoxidizing fluid bed twin-stage distribution apparatus of the isophthalodinitrile of high-load height yield further.
The purpose of this utility model is achieved in that a kind of ammonoxidizing fluid bed twin-stage distribution apparatus, it comprises fluidized-bed reactor body, described fluidized-bed reactor body bottom portion is provided with ammonia and import, air intlet are expected in meta-xylene vaporization, described ammonia and meta-xylene vaporization expect to be provided with the first distribution grid above import and air intlet, and above described first distribution grid, 3.6 ± 0.5m place is provided with the second distribution grid.
Compared with prior art, the beneficial effects of the utility model are:
The ammonoxidizing fluid bed twin-stage distribution apparatus of the utility model,
equipment improvement can be carried out on existing production process basis, reduce the independent subtractive process of isophthalodinitrile, optimized production process, reduce production cost.
improve the yield of product, reduce impurity content, final production goes out the isophthalodinitrile of high-quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing fluidized-bed reactor.
Fig. 2 is the structural representation of the ammonoxidizing fluid bed twin-stage distribution apparatus of the utility model.
Wherein: the import 3 of fluidized-bed reactor body 1, first distribution grid 2, ammonia and meta-xylene vaporization material, air intlet 4, second distribution grid 5.
Detailed description of the invention
See Fig. 2, the ammonoxidizing fluid bed twin-stage distribution apparatus that the utility model relates to, it comprises fluidized-bed reactor body 1, be provided with bottom described fluidized-bed reactor body 1 ammonia and meta-xylene vaporization material import 3, air intlet 4, described ammonia and meta-xylene vaporization expect to be provided with the first distribution grid 2 above import 3 and air intlet 4, and above described first distribution grid 2,3.6 ± 0.5m place is provided with the second distribution grid 5.
Above the first distribution grid 2, about 3.6m place has added one piece of second distribution grid 5, ammonia after vaporization and meta-xylene are through the first distribution grid 2 and the second distribution grid 5, on the second distribution grid 5,1m action space catalyst still can even suspension, therefore such improvement adds the equally distributed space of catalyst, add the time of staying, the mutual energy of each raw material phase is fully reacted, and raw material yield brings up to 85% by original 80%, the target product impurity content produced is low, and main content improves.
The utility model has the advantage of:
equipment improvement is carried out on existing production process basis, reduces the independent subtractive process of isophthalodinitrile, optimized production process, reduce production cost.
improve the yield of product, reduce impurity content, final production goes out the isophthalodinitrile of high-quality.
Claims (1)
1. an ammonoxidizing fluid bed twin-stage distribution apparatus, it comprises fluidized-bed reactor body (1), described fluidized-bed reactor body (1) bottom is provided with ammonia and meta-xylene vaporization material import (3), air intlet (4), described ammonia and meta-xylene vaporization expect that import (3) and air intlet (4) top are provided with the first distribution grid (2), it is characterized in that: 3.6 ± 0.5m place, described first distribution grid (2) top is provided with the second distribution grid (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420862936.0U CN204429253U (en) | 2014-12-31 | 2014-12-31 | Ammonoxidizing fluid bed twin-stage distribution apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420862936.0U CN204429253U (en) | 2014-12-31 | 2014-12-31 | Ammonoxidizing fluid bed twin-stage distribution apparatus |
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| Publication Number | Publication Date |
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| CN204429253U true CN204429253U (en) | 2015-07-01 |
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| CN201420862936.0U Active CN204429253U (en) | 2014-12-31 | 2014-12-31 | Ammonoxidizing fluid bed twin-stage distribution apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106892839A (en) * | 2015-12-18 | 2017-06-27 | 上海泰禾国际贸易有限公司 | A kind of method of refined isophthalodinitrile |
| CN107540572A (en) * | 2016-06-28 | 2018-01-05 | 江苏新河农用化工有限公司 | It is a kind of be used between/the refined equipment of para-Phthalonitrile |
-
2014
- 2014-12-31 CN CN201420862936.0U patent/CN204429253U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106892839A (en) * | 2015-12-18 | 2017-06-27 | 上海泰禾国际贸易有限公司 | A kind of method of refined isophthalodinitrile |
| CN107540572A (en) * | 2016-06-28 | 2018-01-05 | 江苏新河农用化工有限公司 | It is a kind of be used between/the refined equipment of para-Phthalonitrile |
| CN107540572B (en) * | 2016-06-28 | 2024-01-30 | 江苏新河农用化工有限公司 | Equipment for refining m/p-phthalonitrile |
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