CN219539841U - Fine adipic acid production system with zero dust emission - Google Patents
Fine adipic acid production system with zero dust emission Download PDFInfo
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- CN219539841U CN219539841U CN202320422624.7U CN202320422624U CN219539841U CN 219539841 U CN219539841 U CN 219539841U CN 202320422624 U CN202320422624 U CN 202320422624U CN 219539841 U CN219539841 U CN 219539841U
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- adipic acid
- gas phase
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- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 title claims abstract description 124
- 239000000428 dust Substances 0.000 title claims abstract description 114
- 235000011037 adipic acid Nutrition 0.000 title claims abstract description 62
- 239000001361 adipic acid Substances 0.000 title claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 238000010521 absorption reaction Methods 0.000 claims abstract description 60
- 238000009826 distribution Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 80
- 239000007788 liquid Substances 0.000 claims description 69
- 239000012071 phase Substances 0.000 claims description 68
- 239000000945 filler Substances 0.000 claims description 35
- 230000001105 regulatory effect Effects 0.000 claims description 34
- 239000007787 solid Substances 0.000 claims description 25
- 238000001035 drying Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 13
- 239000012498 ultrapure water Substances 0.000 claims description 11
- 239000007792 gaseous phase Substances 0.000 claims description 8
- 239000007791 liquid phase Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 7
- 238000007664 blowing Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 12
- 239000000047 product Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000005243 fluidization Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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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
- Y02P20/10—Process efficiency
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- Fertilizers (AREA)
Abstract
The utility model discloses a refined adipic acid production system with zero dust emission, which mainly comprises a variable frequency blower, a fluidized bed, a cyclone dust collector, a dust absorption tower, a gas-phase circulator and a cyclone. The system is designed to produce gas phase by refined adipic acid, after the gas phase is subjected to water film dedusting treatment by a dust absorption tower, the gas phase is sent to a variable frequency blower outlet by taking a gas phase circulator as power, a cyclone is arranged from the gas phase circulator outlet to the variable frequency blower outlet and used for reducing moisture and dedusting before tail gas enters the system, the gas entering the fluidized bed is ensured to be used for reuse, and the blowing quantity required by the variable frequency blower is reduced by override control. The gas enters the air chamber of the fluidized bed through the air distribution plate at the bottom of the fluidized bed to fluidize the refined adipic acid material and take away moisture, then enters a cyclone dust collector to carry out dust removal treatment, the refined adipic acid separated by the cyclone dust collector is discharged into a finished product bin, and the gas phase enters a dust absorption tower to realize the closed cycle of the dry gas phase of the refined adipic acid and the internal treatment of the wrapped dust.
Description
Technical Field
The utility model belongs to the field of dust emission, and particularly relates to a refined adipic acid production system with zero dust emission.
Background
In the drying production process of refined adipic acid, the buried pipe type fluidized bed dryer has the advantages of highest process efficiency and good drying effect, and in the drying process, the method canGenerating a large amount of tail gas, wherein the main components of the tail gas are air, water and a small amount of adipic acid dust, firstly adopting cyclone separation, then washing with water film to remove the adipic acid dust in the tail gas, and discharging the adipic acid dust into the atmosphere with the adipic acid content of 70-110 mg/m 3 The secondary standard in the integrated emission standard for atmospheric pollution GB16297-1996 is completely satisfied, but how to further achieve the zero emission of dust, thereby realizing the advanced enterprises of green production and innovative production, which is the key point of technical attack.
In the process of drying refined adipic acid, the fixed-frequency air blower has certain output power in the process of conveying air medium, and the air quantity required by fluidization and moisture carrying of the fluidized bed needs to be adjusted in time along with the change of production load, so that the unit consumption is increased to a certain extent.
Disclosure of Invention
The utility model aims to provide a refined adipic acid production system with zero dust emission, which realizes the zero dust emission of adipic acid and reduces the electric energy consumption of partial equipment by some reformation of tail gas produced at the outlet of a gas-phase circulator. The technical scheme adopted by the utility model is as follows:
the utility model provides a dust zero release's smart adipic acid production system, including the air filter felt that connects gradually through the pipeline, the variable frequency air-blower, the fluidized bed, cyclone, the dust absorption tower, the gas phase circulator, still include the swirler, the swirler is equipped with gas phase export and liquid phase export, the export of gas phase circulator links to each other with the import of swirler, the liquid phase export of swirler links to each other with the import of dust absorption tower, the gas phase export of swirler is parallelly connected on the pipeline between variable frequency air-blower and fluidized bed through the air recirculation pipeline, be equipped with first air flowmeter and first governing valve on the air recirculation pipeline, first air flowmeter is used for measuring the air mass flow on the air recirculation pipeline, be equipped with the second air flowmeter on the connecting pipeline between air filter felt, the variable frequency air-blower with the first air mass flow controller of signal connection can feedback control first governing valve, be equipped with the second governing valve on the connecting pipeline between variable frequency air-blower and the air recirculation pipeline, be equipped with the third air flowmeter signal connection's second air mass flow controller can feedback control the second governing valve on the connecting pipeline between air recirculation pipeline and the fluidized bed.
Further, the fluidized bed is a buried pipe type fluidized bed dryer, a drying area consisting of three groups of solid heaters and a cooling area consisting of a group of solid coolers are arranged in the fluidized bed, the fluidized bed is divided into five air inlet chambers, four drying air chambers and one cooling air chamber, an air distribution plate is arranged below the air chambers, and air enters the fluidized bed through the air distribution plate to take away water; two branches are arranged on a connecting pipeline between the air recirculation pipeline and the fluidized bed, a gas heater is arranged on one branch, and four hot air branches are arranged at the tail end of the branch and are respectively connected with four drying air chambers; the other branch is provided with a gas cooler, and the tail end of the branch is connected with the cooling air chamber.
Further, the fluidized bed is provided with an adipic acid inlet, a solid outlet and a gas phase outlet, the solid outlet is connected with a finished product bin through a pipeline, the gas phase outlet is connected with an inlet of a cyclone dust collector through a pipeline, so that gas phase discharged from the top of the fluidized bed enters the cyclone dust collector for primary dust removal, the cyclone dust collector is provided with a gas phase outlet and a solid outlet, the solid outlet at the bottom of the cyclone dust collector is connected with the finished product bin, the gas phase outlet at the top of the cyclone dust collector is connected with a dust absorption tower, a first pressure controller is arranged on the fluidized bed, a third regulating valve is arranged on the pipeline between the fluidized bed and the cyclone dust collector, and the first pressure controller is connected with the third regulating valve to control the opening of the third regulating valve by the pressure in the fluidized bed.
Further, be equipped with first filler section and be located the second filler section of first filler section top in the dust absorption tower, be equipped with the import on the dust absorption tower, cauldron base fluid export, cauldron base fluid import, high purity water import and gas phase export, gas phase export and gas phase circulator link to each other, the import is located first filler section below, the cauldron base fluid export is located the tower bottom, the cauldron base fluid import is located first filler section top, thereby high purity water import is located second filler section top and regard as the second filler section absorption liquid, thereby cauldron base fluid export and cauldron base fluid import link to each other through cauldron base fluid pipeline and regard as first filler section absorption liquid with cauldron base fluid, be equipped with feed pump and valve on the cauldron base fluid pipeline, branch is equipped with overflow pipeline on the cauldron base fluid pipeline, overflow pipeline and adipic acid apparatus link to each other so as to send unnecessary cauldron base fluid into adipic acid apparatus, the dust absorption tower bottom is equipped with the liquid level controller, thereby be equipped with the fourth governing valve on the overflow pipeline, the liquid level controller links to each other with the fourth governing valve in order to be by the aperture of the liquid level control of tower bottom fluid.
Further, a second pressure controller and a fifth regulating valve are arranged on a pipeline between the dust absorption tower and the gas-phase circulating machine, and the second pressure controller is respectively connected with the fifth regulating valve and the third regulating valve, so that the pressure control is carried out on the fluidized bed and the dust absorption tower through the gas-phase circulating machine, and the fluidized bed and the dust absorption tower are in a micro negative pressure state.
The gas phase at the top of the fluidized bed is subjected to cyclone dust removal through a cyclone dust collector, two sections of water film fillers in a dust absorption tower absorb dust to remove 99.9% adipic acid dust in the gas phase, the gas phase is circulated into a cyclone to carry out gas-liquid-solid separation under the micro negative pressure control of a gas phase circulating machine, water vapor and feed liquid containing 1.2-2.0 Kg/h adipic acid are sent into the bottom of the dust absorption tower through a cyclone discharge valve to serve as one section of absorption liquid of the dust absorption tower, the gas phase is discharged from the top of the cyclone, and under the 'override control program', and air of a variable frequency blower enters the bottom of the fluidized bed to serve as material fluidization and moisture carrying air.
The first filler section absorption liquid is a dust absorption tower kettle bottom liquid phase, the second filler section absorption liquid is high-purity water, a top gas phase outlet of the cyclone dust collector is connected with an inlet below the dust absorption tower first filler section, the gas phase is controlled to flow from bottom to top in the tower through negative pressure at the top of the dust absorption tower, the gas phase is contacted with the absorption liquid from top to bottom, so that the gas phase is secondarily dedusted, and the excessive kettle bottom liquid is sent to an adipic acid production device for recycling through a material liquid pump and liquid level control.
The utility model has the advantages that:
1. after the cyclone is additionally arranged on the outlet side of the gas-phase circulating machine, the gas phase is removed by water vapor and dust, which is originallyThe content discharged into the atmosphere is 70-110 mg/m 3 The dust gas is recycled to the bottom of the fluidized bed for reuse, so that the zero dust emission of the refined adipic acid production system is realized, the environmental pollution is avoided, and the green production is realized.
2. The gas phase is separated by a cyclone to obtain 1.2-2.0 Kg/h adipic acid feed liquid, and the adipic acid feed liquid enters a dust absorption tower to be used as absorption liquid, and is sent to a front device through liquid level control. The water quantity supplement of the absorption tower is reduced, the adipic acid product is recovered, the production unit consumption is reduced, and the production cost is saved.
3. The fluidized bed air quantity adopts an override control program (on the premise of meeting the air quantity, the cyclone gas phase is used as the priority, the variable frequency blower air quantity is supplemented by flow control), and the frequency and the rotating speed of the variable frequency blower are adjusted according to the air quantity demand according to the fluidized bed production load, so that the electric energy loss is reduced. And, because the required air amount is reduced, the service life of the air filter felt for filtering air is prolonged.
4. The gas phase is recycled by a cyclone to obtain 1.2-2.0 Kg/h adipic acid feed liquid, and the adipic acid dust concentration is 70-110 mg/m 3 Down to 0mg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the The blower is a fixed frequency blower before transformation, and the variable frequency blower is replaced after transformation, so that the electric energy consumption of the blower is reduced, and the production cost is saved. Meanwhile, the recovery amount of adipic acid is increased by 1.2-2.0 Kg/h, and the product quality is unchanged. The recovered tail gas enters the system through the gas-phase circulating machine, so that the air suction quantity is reduced, the replacement frequency of the air filter element is reduced, and the production cost is reduced. The specific comparison is shown in Table 1.
Table 1 item comparison before and after transformation
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
wherein: 1. a fluidized bed; 2. a cyclone dust collector; 3. a dust absorption tower; 4. a gas phase circulator; 5. a cyclone; 6. variable frequency blower; 7. an air filter felt; 8. a gas heater; 9. a gas cooler; 10. a solid heater; 11. a solid cold zone device; 12. the system comprises a material liquid pump, 13, a finished product bin, 14, an adipic acid production device, 15, a first regulating valve, 16, a second regulating valve, 17, a third regulating valve, 18, a fourth regulating valve, 19, a fifth regulating valve, F1, a first air flow meter, FV1, a first air flow controller, F2, a second air flow meter, FV2, a second air flow controller, F3, a third air flow meter, FV3, a third air flow controller, P1, a first pressure controller, P2, a second pressure controller, L1 and a liquid level controller.
Detailed Description
In order that the manner in which the utility model is practiced, the features of which are readily understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated below.
In the description of the present utility model, it should be noted that, for the azimuth words, terms such as "length", "width", "height", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate azimuth and positional relationships based on the azimuth or positional relationships shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present utility model.
Example 1
The utility model provides a dust zero release's smart adipic acid production system, as shown in fig. 1, including the air filter felt 7 that connects gradually through the pipeline, variable frequency air-blower 6, fluidized bed 1, cyclone 2, dust absorption tower 3, gaseous phase circulator 4, still include swirler 5, swirler 5 is equipped with gaseous phase export and liquid phase export, the export of gaseous phase circulator 4 links to each other with the import of swirler 5, the liquid phase export of swirler 5 links to each other with the import of dust absorption tower 3, the gaseous phase export of swirler 5 connects in parallel on the pipeline between variable frequency air-blower 6 and fluidized bed 1 through the air recirculation pipeline, be equipped with first air flowmeter F1 and first governing valve 15 on the air recirculation pipeline, first air flowmeter F1 is used for measuring the air mass flow on the air recirculation pipeline, first air flow controller FV1 with its signal connection can feedback control first governing valve 15, be equipped with second air flowmeter F2 on the connecting pipeline between variable frequency air-blower 6 and the air recirculation pipeline, be equipped with second governing valve 16 on the connecting pipeline between variable frequency air-blower 6 and the air recirculation pipeline, be equipped with second air flowmeter F2 signal connection with second air flowmeter F2 and third governing valve F3, can be connected with third air flowmeter F3 and third air flowmeter F3 through the air flow controller F1.
In the embodiment, the fluidized bed 1 is a buried pipe type fluidized bed dryer, a drying area formed by three groups of solid heaters 10 and a cooling area formed by a group of solid coolers 11 are arranged in the fluidized bed 1, the fluidized bed is divided into five air inlet chambers, four air inlet chambers and one cooling air chamber, an air distribution plate is arranged below the air inlet chambers, and air enters the fluidized bed 1 through the air distribution plate to take away water; two branches are arranged on a connecting pipeline between the air recirculation pipeline and the fluidized bed 1, a gas heater 8 is arranged on one branch, and four hot air branches are arranged at the tail end of the branch and are respectively connected with four drying air chambers; the other branch is provided with a gas cooler 9, and the tail end of the branch is connected with the cooling air chamber.
In this embodiment, the fluidized bed 1 is provided with an adipic acid inlet, a solid outlet and a gas phase outlet, the solid outlet is connected with the finished product bin 13 through a pipeline, the gas phase outlet is connected with the inlet of the cyclone dust collector 2 through a pipeline, so that the gas phase discharged from the top of the fluidized bed 1 enters the cyclone dust collector 2 for primary dust removal, the cyclone dust collector 2 is provided with the gas phase outlet and the solid outlet, the solid outlet at the bottom of the cyclone dust collector 2 is connected with the finished product bin 13, the gas phase outlet at the top of the cyclone dust collector 2 is connected with the dust absorption tower 3, the fluidized bed 1 is provided with a first pressure controller P1, a third regulating valve 17 is arranged on the pipeline between the fluidized bed 1 and the cyclone dust collector 2, and the first pressure controller P1 is connected with the third regulating valve 17 to control the opening of the third regulating valve 17 by the pressure in the fluidized bed 1.
In this embodiment, a first filler section and a second filler section above the first filler section are disposed in the dust absorption tower 3, an inlet, a bottom liquid outlet, a bottom liquid inlet, a high purity water inlet, and a gas phase outlet are disposed on the dust absorption tower 3, the gas phase outlet and the gas phase circulator 4 are connected, the inlet is disposed below the first filler section, the bottom liquid outlet is disposed at the bottom of the tower, the bottom liquid inlet is disposed above the first filler section, the high purity water inlet is disposed above the second filler section, thereby using high purity water as the second filler section absorption liquid, the bottom liquid outlet and the bottom liquid inlet are connected through a bottom liquid conveying pipeline, thereby using the bottom liquid as the first filler section absorption liquid, a liquid pump 12 and a valve are disposed on the bottom liquid conveying pipeline, an overflow pipeline is branched on the bottom liquid conveying pipeline, the overflow pipeline is connected with the adipic acid production device 14, thereby sending redundant bottom liquid into the adipic acid production device, the bottom of the dust absorption tower 3 is provided with a liquid level controller L1, the overflow pipeline is provided with a fourth regulating valve 18, and the liquid level controller L1 is connected with the fourth regulating valve 18 to control the opening degree of the fourth regulating valve 18 by controlling the liquid level of bottom liquid at the bottom of the tower.
In this embodiment, a second pressure controller P2 and a fifth regulating valve 19 are disposed on a pipeline between the dust absorption tower 3 and the gas-phase circulator 4, and the second pressure controller P2 is respectively connected to the fifth regulating valve 19 and the third regulating valve 17, so that the pressure control is performed on the fluidized bed 1 and the dust absorption tower 3 by the gas-phase circulator 4 to make the fluidized bed 1 and the dust absorption tower 3 in a micro negative pressure state.
When the air quantity required by the fluidized bed 1 is used, after heat exchange is carried out by the gas heater 8 and the gas cooler 9, the air quantity uniformly enters five air chambers in the fluidized bed 1 through the air distribution plate arranged at the bottom of the fluidized bed 1, so that the refined adipic acid filter cake added into the fluidized bed 1 is fluidized, and mass and heat transfer are carried out between the fluidized refined adipic acid and hot air of the solid heater 10 and the gas heater 8, so that the materials are uniformly dried. The dried adipic acid material enters a cooling section from a drying section, is cooled by cold air of a gas cooler 9 and a solid cooler 11, reduces the temperature of the dried refined adipic acid material, is finally discharged through an overflow weir, completes the whole drying and cooling process, and is conveyed to a finished product bin 13. The gas phase is wrapped with water vapor and a small amount of adipic acid dust, and is sent to the cyclone dust collector 2 from the top of the fluidized bed 1 through micro negative pressure control.
The gas phase is in the cyclone dust collector 2, and because the gas phase is sucked under the micro negative pressure control of the gas phase circulator 4, the centrifugal force borne by solid adipic acid particles and gas in the gas phase is different, the refined adipic acid solid particles are discharged into a finished product bin 13 from the bottom of the cyclone dust collector 2 under the action of self gravity, and the gas phase at the top of the cyclone dust collector 2 is sucked under the first filler section of the dust absorption tower 3.
The first filler section absorption liquid of the dust absorption tower 3 is kettle bottom liquid, and is sent to the upper part of the first filler section through a feed liquid pump 12, and the feed liquid is uniformly sprayed into the filler to flow downwards through a nozzle; the second filler section absorption liquid of the dust absorption tower 3 is fresh high-purity water, and the high-purity water is uniformly sprayed into the filler to flow downwards through the nozzle. The gas at the top of the dust absorption tower 3 is pumped by a gas-phase circulator 4, and the gas phase from the spin-air dust remover 2 flows upwards from the bottom of the dust absorption tower 3 under the control of micro negative pressure. The gas and the liquid are uniformly interacted under the distribution of the two sections of fillers, 99.9% of adipic acid dust is absorbed by the liquid and falls to the bottom of the kettle, the adipic acid dust and the liquid at the lower part of the cyclone 4 form kettle bottom liquid, and the kettle bottom liquid conveys the excessive adipic acid-containing liquid to the adipic acid production device 14 for recycling under the control of the liquid level.
When the gas-phase circulating machine 4 sucks the dust absorption tower 3, the fluidized bed 1, the cyclone 2 and the dust absorption tower 3 are made to form a micro negative pressure state through a pressure regulating valve, and adipic acid dust is contained in the adipic acid dust of 70-110 mg/m 3 The gas phase is conveyed into a cyclone 5, the high-speed gas phase is forced to perform rotary motion after encountering the wall of the cyclone 5, and because the centrifugal forces of air, moisture and adipic acid dust particles are different, the water vapor and the adipic acid dust particles move to the bottom of the cyclone 2 under the combined action of self gravity to form feed liquid containing 1.2-2.0 Kg/h adipic acid, and a discharge valve is arranged at the bottom of the cyclone 5 to discharge the feed liquid to the bottom of a dust absorption tower 3 so as to be recycled; the gas phase is discharged from the top of the cyclone 5, and is controlled by an override control program together with the filtered air from the variable frequency blower 6, after the flow rate indication reaches the flow rate required by fluidization of the fluidized bed 1, the gas phase is respectively heated and cooled by the air heater 8 and the air cooler 9 and then is sent to a gas distribution plate at the bottom of the fluidized bed 1, and the gas phase evenly distributed by the gas distribution plate respectively enters a drying chamber and a cooling chamberA cooling chamber.
The control system is a DCS system, an override control program is remote supporting software, the control of the first regulating valve 15 to the top gas phase of the cyclone 5 and the control of the second regulating valve 16 to the air quantity of the variable frequency blower 6 are realized through the first regulating valve 15, the second regulating valve 16 and the third flow controller FV3, and the top gas phase of the cyclone 5 is preferentially used on the premise that the flow meets the requirement of the fluidized bed 1, and then the air of the variable frequency blower 6 is used as flow compensation. The air quantity Y=the air quantity Z of the second air flow meter and the air quantity X of the third air flow meter, and the air quantity Z is adjusted according to the production load demand, so that the basic fluidization and moisture carrying air quantity Z (5000-6000 m 3 On the premise of/h), the top gas phase X (3500-4000 m) of the cyclone 5 is used 3 /h) as priority, and the air volume Y of the variable frequency blower 6 (1500-2000 m) 3 And/h) supplementing the air conditioner to save 3500-4000 m frequency conversion blower 3 The energy consumption required by the air quantity per hour is reduced from Z to Y, and the service life of the air filter felt 7 is prolonged by 2-3 times.
In summary, through this system production smart adipic acid process, realize dust zero release, avoid the harm of adipic acid dust to the environment, greatly reduced the environmental protection cost, simultaneously recovered adipic acid, practiced thrift manufacturing cost, reduced frequency conversion air-blower 6 energy consumption, prolonged air filter felt 7's life.
Finally, it should be noted that: the above examples are provided for illustrating the technical solution of the present utility model and are not to be construed as limiting the present utility model, and it should be understood by those skilled in the art that any equivalent or obvious modification of the embodiments of the present utility model without changing the performance or use thereof without departing from the spirit of the present utility model is intended to be included in the scope of the present utility model as claimed.
Claims (5)
1. The utility model provides a dust zero release's smart adipic acid production system, include the air filter felt that connects gradually through the pipeline, the variable frequency air-blower, the fluidized bed, cyclone, the dust absorption tower, the gaseous phase circulator, a serial communication port, still include the swirler, the swirler is equipped with gaseous phase export and liquid phase export, the export of gaseous phase circulator links to each other with the import of swirler, the liquid phase export of swirler links to each other with the import of dust absorption tower, the gaseous phase export of swirler is parallelly connected on the pipeline between variable frequency air-blower and fluidized bed through the air recirculation pipeline, be equipped with first air flowmeter and first governing valve on the air recirculation pipeline, first air flowmeter is used for measuring the air mass flow on the air recirculation pipeline, be equipped with the first air mass flow controller of signal connection with it can feedback control first governing valve, the air filter felt, be equipped with the second air flowmeter on the connecting pipeline between variable frequency air-blower and the air recirculation pipeline, second governing valve can feedback control the second governing valve with the second air mass flow controller of second air flowmeter signal connection, be equipped with the third air flowmeter on the connecting pipeline between air recirculation pipeline and the fluidized bed, can the air mass flow controller and third air mass flow controller can the air mass flow controller.
2. The fine adipic acid production system with zero dust emission according to claim 1, wherein the fluidized bed is a buried pipe type fluidized bed dryer, a drying area consisting of three groups of solid heaters and a cooling area consisting of a group of solid coolers are arranged in the fluidized bed, the fluidized bed is divided into five air inlet chambers, four drying air chambers and one cooling air chamber, an air distribution plate is arranged below the air chambers, and air enters the fluidized bed through the air distribution plate to take away moisture; two branches are arranged on a connecting pipeline between the air recirculation pipeline and the fluidized bed, a gas heater is arranged on one branch, and four hot air branches are arranged at the tail end of the branch and are respectively connected with four drying air chambers; the other branch is provided with a gas cooler, and the tail end of the branch is connected with the cooling air chamber.
3. The fine adipic acid production system with zero dust emission according to claim 1, wherein the fluidized bed is provided with an adipic acid inlet, a solid outlet and a gas phase outlet, the solid outlet is connected with a finished product bin through a pipeline, the gas phase outlet is connected with an inlet of a cyclone dust collector through a pipeline so that gas phase discharged from the top of the fluidized bed enters the cyclone dust collector for primary dust removal, the cyclone dust collector is provided with the gas phase outlet and the solid outlet, the solid outlet at the bottom of the cyclone dust collector is connected with the finished product bin, the gas phase outlet at the top of the cyclone dust collector is connected with a dust absorption tower, a first pressure controller is arranged on the fluidized bed, a third regulating valve is arranged on the pipeline between the fluidized bed and the cyclone dust collector, and the first pressure controller is connected with the third regulating valve so as to control the opening degree of the third regulating valve by the pressure in the fluidized bed.
4. The fine adipic acid production system with zero dust emission according to claim 3, wherein a first filler section and a second filler section above the first filler section are arranged in the dust absorption tower, an inlet, a bottom liquid outlet, a bottom liquid inlet, a high purity water inlet and a gas phase outlet are arranged on the dust absorption tower, the gas phase outlet and the gas phase circulator are connected, the inlet is arranged below the first filler section, the bottom liquid outlet is arranged at the bottom of the tower, the bottom liquid inlet is arranged above the first filler section, the high purity water inlet is arranged above the second filler section so as to take high purity water as the absorption liquid of the second filler section, the bottom liquid outlet and the bottom liquid inlet are connected through a bottom liquid conveying pipeline so as to take the bottom liquid of the kettle as the absorption liquid of the first filler section, a liquid feed pump and a valve are arranged on the bottom liquid conveying pipeline, an overflow pipeline is branched on the bottom liquid conveying pipeline, the overflow pipeline is connected with an adipic acid production device so as to send redundant bottom liquid of the kettle into the adipic acid production device, a liquid level controller is arranged at the bottom of the dust absorption tower, a fourth regulating valve is arranged on the overflow pipeline, and a fourth regulating valve is connected with the fourth regulating valve so as to control the opening degree of the bottom liquid level of the bottom liquid of the kettle.
5. The fine adipic acid production system with zero dust emission according to claim 3, wherein a second pressure controller and a fifth regulating valve are arranged on a pipeline between the dust absorption tower and the gas-phase circulating machine, and the second pressure controller is respectively connected with the fifth regulating valve and the third regulating valve so as to control the pressure of the fluidized bed and the dust absorption tower through the gas-phase circulating machine to enable the fluidized bed and the dust absorption tower to be in a micro negative pressure state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320422624.7U CN219539841U (en) | 2023-03-08 | 2023-03-08 | Fine adipic acid production system with zero dust emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320422624.7U CN219539841U (en) | 2023-03-08 | 2023-03-08 | Fine adipic acid production system with zero dust emission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219539841U true CN219539841U (en) | 2023-08-18 |
Family
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| CN202320422624.7U Active CN219539841U (en) | 2023-03-08 | 2023-03-08 | Fine adipic acid production system with zero dust emission |
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