CN204676016U - Formaldehyde-pyridine joint production - Google Patents
Formaldehyde-pyridine joint production Download PDFInfo
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- CN204676016U CN204676016U CN201520341221.5U CN201520341221U CN204676016U CN 204676016 U CN204676016 U CN 204676016U CN 201520341221 U CN201520341221 U CN 201520341221U CN 204676016 U CN204676016 U CN 204676016U
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Abstract
The utility model discloses a kind of formaldehyde-pyridine joint production, belong to pyridine production technical field, its structure comprises formaldehyde groove, formaldehyde preheater, gas-liquid separator one and thick product groove, the top of formaldehyde groove is communicated with formaldehyde transport pipe, the bottom of formaldehyde groove is communicated with by the bottom of pipeline with formaldehyde preheater, the outlet of formaldehyde preheater side is communicated with by the side of pipeline with ammonia gasifier, the opposite side of ammonia gasifier is communicated with crude product water cooler by pipeline, the outlet of crude product water cooler is communicated with by the top of pipeline with gas-liquid separator one, the bottom of gas-liquid separator one is communicated with thick product groove by pipeline.Compared to the prior art formaldehyde of the present utility model-pyridine joint production, has the features such as system energy consumption is little, raw material availability is high, waste water generation is little, non-environmental-pollution, efficiency of cycling economy are remarkable.
Description
Technical field
The utility model relates to pyridine production technical field, specifically formaldehyde-pyridine joint production.
Background technology
Aldehyde ammonia method-pyridine synthesis technique is the pyridine production technique of current main-stream, and formaldehyde, as one of main raw material, deposits problem both ways: one be formaldehyde self-polymerization produce wastage of material and environmental pollution; Two is that the pyridine synthesis system wastewater flow rate that low concentration formaldehyde solution causes is more.Formaldehyde is easily polymerized because of himself, need to maintain higher temperature in storage, transportation, pyridine building-up reactions can not be participated in as raw material after being polymerized, and easily block feed pipe, affect production equipment steady running, in scale removal process, easily cause environmental pollution.Most pyridine manufacturers working concentration at the formaldehyde of 37%-45% as raw material, add the water-content in raw material accordingly, compared with the pyridine synthesis system of use 50% concentration formaldehyde, the wastewater flow rate of generation is corresponding adds 5%-13%, adds the operating load of environmental protecting device.
Summary of the invention
Technical assignment of the present utility model is for above weak point, provides formaldehyde-pyridine joint production that a kind of system energy consumption is little, raw material availability is high.
The utility model solves the technical scheme that its technical problem adopts: this formaldehyde-pyridine joint production comprises formaldehyde groove, formaldehyde preheater, gas-liquid separator one and thick product groove, the top of formaldehyde groove is communicated with formaldehyde transport pipe, the bottom of formaldehyde groove is communicated with by the bottom of pipeline with formaldehyde preheater, the outlet of formaldehyde preheater side is communicated with by the side of pipeline with ammonia gasifier, the opposite side of ammonia gasifier is communicated with crude product water cooler by pipeline, the outlet of crude product water cooler is communicated with by the top of pipeline with gas-liquid separator one, the bottom of gas-liquid separator one is communicated with thick product groove by pipeline.
The outlet of described thick product groove is communicated with the middle part of stripping tower by pipeline, the top of stripping tower is communicated with condenser by pipeline, the outlet of condenser is communicated with gas-liquid separator two by pipeline, the top of gas-liquid separator two is communicated with by the bottom of pipeline with ammonia gasifier, the top of ammonia gasifier is communicated with ammonia superheater by pipeline, ammonia superheater is communicated with reactor cycles by pipeline, and the outlet of ammonia superheater is communicated with formaldehyde preheater by pipeline.
The pipeline be communicated with between described thick product groove and stripping tower is provided with feeding pump.
The bottom of described stripping tower is communicated with reboiler by piping loop.
The bottom of described gas-liquid separator two is communicated with formaldehyde preheater, stripping tower respectively by pipeline.
The outlet at described formaldehyde preheater top is communicated with by the side of pipeline with Formaldehyde Gasification device, and the opposite side of Formaldehyde Gasification device is communicated with reactor by pipeline.
The pipeline be communicated with between described formaldehyde groove and formaldehyde preheater is provided with formaldehyde pump.
The outlet at described gas-liquid separator one top is communicated with the bottom on absorption tower by pipeline.
The bottom inlet of described ammonia gasifier is communicated with ammonia storage tank by pipeline.
Compared to the prior art formaldehyde of the present utility model-pyridine joint production, has following characteristics:
1) stop the polymerism in formaldehyde storage and transport process, decrease the environmental pollution probability in formaldehyde raw material waste and scale removal process;
2) adopt the formaldehyde pyridine synthesis of 50% concentration, decrease the moisture entering pyridine synthesizer, the wastewater flow rate of extraction workshop section is corresponding decreases 5%-13%, and system reduces wastewater discharge 225kg-585kg/ ton product, reduces wastewater discharge 2250-5850 ton year;
3) formaldehyde, all waste gases of pyridine workshop section generation, waste water, waste residue are all sent to pyrolysis workshop section, the periodic off-gases produced with synthesis ammonia system is for main fuel, by waste gas, waste water, the complete burning disposal of waste residue, the heat by-product 1.5MPa steam that burning produces is sent to steam pipe system and uses for system, reduce system production cost, improve the recycling economy effect of system.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Accompanying drawing 1 is the structural representation of formaldehyde-pyridine joint production.
In figure: 1, formaldehyde groove, 2, formaldehyde pump, 3, formaldehyde preheater, 4, ammonia gasifier, 5, crude product water cooler, 6, gas-liquid separator one, 7, absorption tower, 8, thick product groove, 9, feeding pump, 10, stripping tower, 11, condenser, 12, gas-liquid separator two, 13, ammonia superheater, 14, reactor, 15, Formaldehyde Gasification device, 16, reboiler, 17, ammonia storage tank.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1:
Formaldehyde of the present utility model-pyridine joint production, its structure comprises formaldehyde groove 1, formaldehyde preheater 3, gas-liquid separator 1 and thick product groove 8, the top of formaldehyde groove 1 is communicated with formaldehyde transport pipe, the bottom of formaldehyde groove 1 is communicated with by the bottom of pipeline with formaldehyde preheater 3, and the pipeline be communicated with between formaldehyde groove 1 and formaldehyde preheater 3 is provided with formaldehyde pump 2; The outlet at formaldehyde preheater 3 top is communicated with by the side of pipeline with Formaldehyde Gasification device 15, and the opposite side of Formaldehyde Gasification device 15 is communicated with reactor 14 by pipeline; The outlet of formaldehyde preheater 3 side is communicated with by the side of pipeline with ammonia gasifier 4, the opposite side of ammonia gasifier 4 is communicated with crude product water cooler 5 by pipeline, the outlet of crude product water cooler 5 is communicated with by the top of pipeline with gas-liquid separator 1, the outlet at gas-liquid separator 1 top is communicated with by the bottom of pipeline with absorption tower 7, and the bottom of gas-liquid separator 1 is communicated with thick product groove 8 by pipeline.
The outlet of described thick product groove 8 is communicated with by the middle part of pipeline with stripping tower 10, and the pipeline be communicated with between thick product groove 8 and stripping tower 10 is provided with feeding pump 9; The bottom of stripping tower 10 is communicated with reboiler 16 by piping loop, the top of stripping tower 10 is communicated with condenser 11 by pipeline, the outlet of condenser 11 is communicated with gas-liquid separator 2 12 by pipeline, and the bottom of gas-liquid separator 2 12 is communicated with formaldehyde preheater 3, stripping tower 10 respectively by pipeline; The top of gas-liquid separator 2 12 is communicated with by the bottom inlet of pipeline with ammonia gasifier 4, the bottom inlet of ammonia gasifier 4 is communicated with ammonia storage tank 17 by pipeline, the top of ammonia gasifier 4 is communicated with ammonia superheater 13 by pipeline, ammonia superheater 13 to be circulated with reactor 14 by pipeline and is communicated with, and the outlet of ammonia superheater 13 is communicated with formaldehyde preheater 3 by pipeline.
Technological process:
The formaldehyde of 50% concentration enters formaldehyde groove 1 by pipeline, formaldehyde in formaldehyde groove 1 enters preheating in formaldehyde preheater 3 by formaldehyde pump 2, afterwards after ammonia gasifier 4 and crude product water cooler 5 process, enter gas-liquid separator 1 and carry out gas-liquid separation process, the thick product groove 8 of thick product introduction of gained, thick product enters stripping tower 10 by feeding pump 9 and processes further afterwards, and products obtained therefrom enters the extraction tower process of next link.
After the gas-liquid that stripping tower 10 produces enters condenser 11 condensation, enter gas-liquid separator 2 12 and carry out gas-liquid separation process, part liquid enters circulation formaldehyde preheater 3 and carries out cyclic process, another part gas enters ammonia gasifier 4, and then enter ammonia superheater 13, enter reactor 14 afterwards to process, cycling and reutilization.
By embodiment above, described those skilled in the art can be easy to realize the utility model.But should be appreciated that the utility model is not limited to above-mentioned several embodiments.On the basis of disclosed embodiment, described those skilled in the art can the different technical characteristic of arbitrary combination, thus realizes different technical schemes.
Claims (9)
1. formaldehyde-pyridine joint production, comprise formaldehyde groove, formaldehyde preheater, gas-liquid separator one and thick product groove, it is characterized in that, the top of formaldehyde groove is communicated with formaldehyde transport pipe, the bottom of formaldehyde groove is communicated with by the bottom of pipeline with formaldehyde preheater, the outlet of formaldehyde preheater side is communicated with by the side of pipeline with ammonia gasifier, the opposite side of ammonia gasifier is communicated with crude product water cooler by pipeline, the outlet of crude product water cooler is communicated with by the top of pipeline with gas-liquid separator one, and the bottom of gas-liquid separator one is communicated with thick product groove by pipeline.
2. formaldehyde according to claim 1-pyridine joint production, it is characterized in that, the outlet of described thick product groove is communicated with the middle part of stripping tower by pipeline, the top of stripping tower is communicated with condenser by pipeline, the outlet of condenser is communicated with gas-liquid separator two by pipeline, the top of gas-liquid separator two is communicated with by the bottom of pipeline with ammonia gasifier, the top of ammonia gasifier is communicated with ammonia superheater by pipeline, ammonia superheater is communicated with reactor cycles by pipeline, and the outlet of ammonia superheater is communicated with formaldehyde preheater by pipeline.
3. formaldehyde according to claim 2-pyridine joint production, is characterized in that, the pipeline be communicated with between described thick product groove and stripping tower is provided with feeding pump.
4. formaldehyde according to claim 2-pyridine joint production, is characterized in that, the bottom of described stripping tower is communicated with reboiler by piping loop.
5. formaldehyde according to claim 2-pyridine joint production, is characterized in that, the bottom of described gas-liquid separator two is communicated with formaldehyde preheater, stripping tower respectively by pipeline.
6. formaldehyde according to claim 1-pyridine joint production, is characterized in that, the outlet at described formaldehyde preheater top is communicated with by the side of pipeline with Formaldehyde Gasification device, and the opposite side of Formaldehyde Gasification device is communicated with reactor by pipeline.
7. formaldehyde according to claim 1-pyridine joint production, is characterized in that, the pipeline be communicated with between described formaldehyde groove and formaldehyde preheater is provided with formaldehyde pump.
8. formaldehyde according to claim 1-pyridine joint production, is characterized in that, the outlet at described gas-liquid separator one top is communicated with the bottom on absorption tower by pipeline.
9. formaldehyde according to claim 1-pyridine joint production, is characterized in that, the bottom inlet of described ammonia gasifier is communicated with ammonia storage tank by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520341221.5U CN204676016U (en) | 2015-05-25 | 2015-05-25 | Formaldehyde-pyridine joint production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520341221.5U CN204676016U (en) | 2015-05-25 | 2015-05-25 | Formaldehyde-pyridine joint production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204676016U true CN204676016U (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520341221.5U Active CN204676016U (en) | 2015-05-25 | 2015-05-25 | Formaldehyde-pyridine joint production |
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|---|---|
| CN (1) | CN204676016U (en) |
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2015
- 2015-05-25 CN CN201520341221.5U patent/CN204676016U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170406 Address after: Ji'nan City, Shandong province 250200 northbound fluorine chemical industrial park kiosk in Zhangqiu District Patentee after: SHANDONG MINGHUA NEW MATERIAL CO., LTD. Patentee after: Dalian Institute of Chemical Physics, Chinese Academy of Sciences Address before: Mingshui town Lotus Road 250200 Ji'nan city in Shandong province Zhangqiu City No. 15 Shandong coal chemical industry group limited company Patentee before: SHANDONG JINMEI MINGSHUI CHEMICAL GROUP CO., LTD. Patentee before: Dalian Institute of Chemical Physics, Chinese Academy of Sciences |
|
| TR01 | Transfer of patent right |