CN217829914U - A device for producing continuous granulation of caprolactam byproduct ammonium sulfate - Google Patents
A device for producing continuous granulation of caprolactam byproduct ammonium sulfate Download PDFInfo
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- CN217829914U CN217829914U CN202221430255.8U CN202221430255U CN217829914U CN 217829914 U CN217829914 U CN 217829914U CN 202221430255 U CN202221430255 U CN 202221430255U CN 217829914 U CN217829914 U CN 217829914U
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Abstract
The utility model discloses a device for producing caprolactam by-product ammonium sulfate continuous granulation, including a centrifugal machine, the centrifugal machine is connected with a mixing machine through a belt, the mixing machine is connected with an extrusion granulating machine through a belt, the extrusion granulating machine is connected with a granulation rolling sieve through a belt, the granulation rolling sieve is connected with a drying machine through a belt, the drying machine is connected with a finished product rolling sieve through a belt, the finished product rolling sieve is connected with a lifting machine through a belt, the lifting machine is connected with a powder flow cooler, and the powder flow cooler is connected with a finished product barrel through a belt; the utility model discloses not only reduce the raw materials extravagant, realized the streamlined production manufacturing moreover, each equipment gaseous phase is collected the back simultaneously and is handled through whirlwind, sack dust removal, washing, and tail gas discharge to reach standard has also improved the site environment.
Description
Technical Field
The utility model relates to a chemical industry field specifically indicates a device that is used for producing continuous granulation of caprolactam byproduct ammonium sulfate.
Background
The caprolactam production is to obtain crude caprolactam after oximation reaction, rearrangement reaction and neutralization reaction, the crude caprolactam is purified in a series to obtain finished caprolactam, in the rearrangement reaction, cyclohexanone oxime is used as raw material, under the catalytic action of fuming sulfuric acid (20 percent SO3), caprolactam sulfate is generated, the caprolactam sulfate is decomposed in a water system and is neutralized with introduced ammonia gas to generate caprolactam and ammonium sulfate, supersaturation crystallization is carried out in an ammonium sulfate system to form crystals, and then centrifugal separation is carried out by a centrifugal machine to obtain crystal ammonium sulfate, in the centrifugal process, the higher the water content is, the larger the caprolactam amount carried in water is, and the higher the caprolactam loss is. The ratio of caprolactam production to ammonium sulfate production throughout the caprolactam production was 1.6.
The ammonium sulfate is surplus in China, the export of the ammonium sulfate is considered in the main sale way, the ammonium sulfate is sold by sea in the exported ammonium sulfate, the crystal has serious moisture absorption and easy pulverization compared with large-particle ammonium sulfate in the transportation process, and the sale situation of the large-particle ammonium sulfate is obviously higher than that of the crystal ammonium sulfate in foreign countries.
The production equipment of the existing large-particle ammonium sulfate product has large raw material loss in the using process and can not realize flow line production and manufacturing. Therefore, it is necessary to design a continuous granulation device for producing caprolactam and byproduct ammonium sulfate to solve the above problems.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned not enough, provide a device for producing continuous granulation of caprolactam byproduct ammonium sulfate, not only reduced the raw materials loss, realized the streamlined production manufacturing moreover.
The utility model discloses a solve above-mentioned technical problem, the technical scheme who adopts is: the utility model provides a device for producing continuous granulation of caprolactam byproduct ammonium sulfate, includes centrifuge, centrifuge passes through the belt and mixes the machine and be connected, mixes the machine and is connected with the extrusion granulator through the belt, and the extrusion granulator passes through the belt to be connected with the granulation roll screen, and the granulation roll screen passes through the belt to be connected with the drying-machine, and the drying-machine passes through the belt to be connected with the finished product roll screen, and the finished product roll screen passes through the belt to be connected with the lifting machine, and the lifting machine flows the cooler with the powder and is connected, and the powder flows the cooler and passes through the belt and be connected with the finished product bucket.
Preferably, the dryer is connected with a heater, and the heater is connected with a fan.
Preferably, the centrifuge, the mixer, the extrusion granulator and the granulation rolling screen are arranged in the same closed space, the finished product rolling screen, the elevator, the powder flow cooler and the finished product barrel are arranged in the same closed space, the gas phase spaces of the two closed spaces are respectively connected with an environmental fan, the environmental fan is connected with an environmental cyclone separator, the environmental cyclone separator is connected with an environmental bag-type dust collector, and the environmental bag-type dust collector is connected with the tail gas absorption tower.
Preferably, the dryer is connected with a drying fan, the drying fan is connected with a drying cyclone separator, the drying cyclone separator is connected with a drying bag-type dust collector, and the drying bag-type dust collector is connected with a tail gas absorption tower.
Preferably, the bottom of the tail gas absorption tower is connected with a feed inlet of a tail gas washing circulating pump, a discharge outlet of the tail gas washing circulating pump is respectively connected with the upper part of the tail gas absorption tower, a mother liquor tank of an ammonium sulfate device and a mixer, and the tail gas absorption tower is further connected with a desalted water pipe.
Preferably, a feed inlet of the centrifuge is connected with the ammonium sulfate device pre-thickener, a liquid outlet of the centrifuge is connected with a mother liquor tank of the ammonium sulfate device, and a solid outlet is connected with the belt.
Preferably, the granulation rolling sieve, the finished product rolling sieve, the drying cyclone separator, the drying bag-type dust collector, the environment cyclone separator and the environment bag-type dust collector are all connected with the mixer through belts.
Preferably, the powder flow cooler adopts circulating water for cooling, the temperature difference between the upper water and the return water of the circulating water is 8 ℃, and the temperature of the upper water is less than or equal to 32 ℃.
The utility model has the advantages that:
1. not only reduces the raw material waste, but also realizes the production line production and manufacturing;
2. after gas phase of each device is collected and treated by cyclone, cloth bag dust removal and water washing, the on-site environment is improved, and tail gas reaches the standard and is discharged.
Drawings
FIG. 1 is a schematic structural diagram of a continuous granulation apparatus for producing caprolactam and by-producing ammonium sulfate;
in the figure, a centrifuge 1, a mixer 2, an extrusion granulator 3, a granulation rolling sieve 4, a dryer 5, a finished product rolling sieve 6, a hoister 7, a powder flow cooler 8, a finished product barrel 9, a fin heater 10, an air fan 11, a drying fan 12, a drying cyclone separator 13, a drying bag-type dust remover 14, an environmental fan 15, an environmental cyclone separator 16, an environmental bag-type dust remover 17, a tail gas absorption tower 18, a tail gas washing circulating pump 19, an ammonium sulfate device mother liquor tank 20, an ammonium sulfate device pre-thickener 21 and a desalted water pipe 22.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1, a device for producing continuous granulation of caprolactam byproduct ammonium sulfate, including centrifuge 1, centrifuge 1 passes through the belt and is connected with mixing machine 2, mixes machine 2 and is connected with extrusion granulator 3 through the belt, extrusion granulator 3 passes through the belt and is connected with granulation rolling sieve 4, granulation rolling sieve 4 passes through the belt and is connected with drying-machine 5, drying-machine 5 passes through the belt and is connected with finished product rolling sieve 6, finished product rolling sieve 6 passes through the belt and is connected with lifting machine 7, lifting machine 7 flows cooler 8 with the powder and is connected, powder flows cooler 8 and is connected with finished product bucket 9 through the belt.
Preferably, the dryer 5 is connected with a heater 10, and the heater 10 is connected with a fan 11. In the embodiment, the heater 10 adopts a fin heater, and the heat source of the fin heater adopts steam with the pressure of 1.0-2.5MPa and the temperature of 170-230 ℃; the fan 11 is connected to the air. Such setting improves the drying efficiency.
Preferably, the centrifuge 1, the mixer 2, the extrusion granulator 3 and the granulation rolling screen 4 are arranged in the same closed space, the finished product rolling screen 6, the elevator 7, the powder flow cooler 8 and the finished product barrel 9 are arranged in the same closed space, the gas phase spaces of the two closed spaces are respectively connected with an environmental fan 15, the environmental fan 15 is connected with an environmental cyclone separator 16, the environmental cyclone separator 16 is connected with an environmental bag-type dust collector 17, and the environmental bag-type dust collector 17 is connected with a tail gas absorption tower 18. The arrangement treats the tail gas of the two closed spaces, so that the field environment is improved, and the tail gas is discharged after reaching the standard.
Preferably, the dryer 5 is connected with a drying fan 12, the drying fan 12 is connected with a drying cyclone separator 13, the drying cyclone separator 13 is connected with a drying bag-type dust collector 14, and the drying bag-type dust collector 14 is connected with a tail gas absorption tower 18. The tail gas of the dryer 5 is treated by the arrangement, so that the field environment is improved, and the tail gas is discharged up to the standard.
Preferably, the bottom of the tail gas absorption tower 18 is connected with a feed inlet of a tail gas washing circulating pump 19, a discharge outlet of the tail gas washing circulating pump 19 is respectively connected with the upper part of the tail gas absorption tower 18, an ammonium sulfate device mother liquor tank 20 and the mixer 2, and the tail gas absorption tower 18 is further connected with a desalted water pipe 22. Such an arrangement reduces the dust content in the off-gas of the off-gas absorption tower.
Preferably, a feed inlet of the centrifuge 1 is connected with an ammonium sulfate device pre-thickener 21, a liquid outlet of the centrifuge 1 is connected with an ammonium sulfate device mother liquor tank 20, and a solid outlet is connected with a belt. In the embodiment, the water content of the ammonium sulfate after the centrifugation of the centrifuge 1 is less than or equal to 0.5 percent.
Preferably, the granulation rolling screen 4, the finished product rolling screen 6, the drying cyclone separator 13, the drying bag-type dust collector 14, the environment cyclone separator 16 and the environment bag-type dust collector 17 are all connected with the mixer 2 through belts. In the embodiment, after the materials in the mixer are mixed, the discharged material contains 2-3% of water. The arrangement recycles the waste materials for recycling production, and reduces the waste of raw materials.
Preferably, the powder flow cooler 8 is cooled by circulating water, the temperature difference between the circulating water and the return water is 8 ℃, and the temperature of the circulating water is less than or equal to 32 ℃, so that the cooling effect is better.
The working principle of the embodiment is as follows: the raw material of the centrifuge 1 comes from an ammonium sulfate device pre-thickener 21, the mother liquor after the centrifuge 1 centrifuges flows into a mother liquor tank 20 of the ammonium sulfate device, the moisture content of the ammonium sulfate after the centrifuge 1 centrifuges is less than or equal to 0.5 percent, and the caprolactam leakage loss is reduced. The centrifuged ammonium sulfate is transmitted to the mixer 2 through a belt, the discharged material contains 2-3% of water after the materials in the mixer 2 are mixed, the mixed material is transmitted to the extrusion granulator 3 through the belt for extrusion, the extrusion effect of the ammonium sulfate containing 2-3% of water is best, and the particle size of 3-5mm after extrusion can reach 80%. Ammonium sulfate after the extrusion granulation is transmitted granulation rolling screen 4 through the belt and is filtered, ammonium sulfate granule after the screening is transmitted drying-machine 5 through the belt and is dried, ammonium sulfate granule after the drying is transmitted finished product rolling screen 6 through the belt and is filtered again, ammonium sulfate granule after the screening is transmitted lifting machine 7 through the belt, ammonium sulfate granule through 7 promotion of lifting machine gets into powder flow cooler 8 and cools off, ammonium sulfate granule after the cooling is transmitted finished product bucket 9 through the belt, finished product ammonium sulfate granule moisture is less than or equal to 0.2% in this embodiment, granule intensity is greater than or equal to 30N.
Ammonium sulfate particles which are not screened by the granulation rolling screen 4 and the finished product rolling screen 6 and ammonium sulfate which is processed by the drying cyclone separator 13, the drying bag-type dust collector 14, the environment cyclone separator 16 and the environment bag-type dust collector 17 are all transmitted to the mixer 2 through a belt, so that the waste of raw materials is reduced.
After gas phase collection of each device and cyclone, bag-type dust removal and water washing treatment, tail gas flows into a tail gas absorption tower 18 for treatment, in the embodiment, the tail gas absorption tower 18 adopts a packed tower, and the dust content in the tail gas discharged by the tail gas absorption tower 18 is less than or equal to 5 mg/m 3 。
The utility model discloses not only reduce the raw materials extravagant, realized the streamlined production manufacturing moreover, each equipment gaseous phase is collected the back simultaneously and is handled through whirlwind, sack dust removal, washing, and tail gas discharge to reach standard has also improved the site environment.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (8)
1. The utility model provides a device for producing continuous granulation of caprolactam byproduct ammonium sulfate, includes centrifuge (1), its characterized in that: centrifuge (1) is connected with mixing machine (2) through the belt, mix machine (2) and be connected with extrusion granulator (3) through the belt, extrusion granulator (3) is connected with granulation rolling screen (4) through the belt, granulation rolling screen (4) are connected with drying-machine (5) through the belt, drying-machine (5) are connected with finished product rolling screen (6) through the belt, finished product rolling screen (6) are connected with lifting machine (7) through the belt, lifting machine (7) are flowed cooler (8) with the powder and are connected, powder flows cooler (8) and is connected with finished product bucket (9) through the belt.
2. The apparatus of claim 1, wherein the apparatus for continuous granulation of ammonium sulfate as byproduct in the production of caprolactam comprises: the dryer (5) is connected with the heater (10), and the heater (10) is connected with the fan (11).
3. The apparatus for continuous granulation of ammonium sulfate as byproduct in production of caprolactam according to claim 1, wherein: centrifuge (1), mix machine (2), extrusion granulator (3) and granulation rolling screen (4) set up in same airtight space, finished product rolling screen (6), lifting machine (7), powder flows cooler (8) and finished product bucket (9) set up in same airtight space, the gaseous phase space in two airtight spaces is connected with environment fan (15) respectively, environment fan (15) are connected with environment cyclone (16), environment cyclone (16) are connected with environment sack cleaner (17), environment sack cleaner (17) are connected with tail gas absorption tower (18).
4. The apparatus of claim 3, wherein the apparatus for continuously granulating ammonium sulfate as a byproduct in the production of caprolactam comprises: the dryer (5) is connected with a drying fan (12), the drying fan (12) is connected with a drying cyclone separator (13), the drying cyclone separator (13) is connected with a drying bag-type dust collector (14), and the drying bag-type dust collector (14) is connected with a tail gas absorption tower (18).
5. The apparatus of claim 4, wherein the apparatus for continuous granulation of ammonium sulfate byproduct from caprolactam production comprises: the bottom of the tail gas absorption tower (18) is connected with a feed inlet of a tail gas washing circulating pump (19), a discharge outlet of the tail gas washing circulating pump (19) is respectively connected with the upper part of the tail gas absorption tower (18), an ammonium sulfate device mother liquor tank (20) and a mixer (2), and the tail gas absorption tower (18) is also connected with a desalted water pipe (22).
6. The apparatus of claim 5, wherein the apparatus for continuous granulation of ammonium sulfate as byproduct in the production of caprolactam comprises: a feed inlet of the centrifuge (1) is connected with an ammonium sulfate device pre-thickener (21), a liquid outlet of the centrifuge (1) is connected with an ammonium sulfate device mother liquor tank (20), and a solid outlet is connected with a belt.
7. The apparatus of claim 5, wherein the apparatus for continuously granulating ammonium sulfate as a byproduct in the production of caprolactam comprises: the granulation rolling screen (4), the finished product rolling screen (6), the drying cyclone separator (13), the drying bag-type dust collector (14), the environment cyclone separator (16) and the environment bag-type dust collector (17) are all connected with the mixer (2) through belts.
8. The apparatus for continuous granulation of ammonium sulfate as byproduct in production of caprolactam according to claim 1, wherein: the powder flow cooler (8) adopts circulating water for cooling, the temperature difference between circulating water and return water is 8 ℃, and the temperature of the circulating water is less than or equal to 32 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221430255.8U CN217829914U (en) | 2022-06-09 | 2022-06-09 | A device for producing continuous granulation of caprolactam byproduct ammonium sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221430255.8U CN217829914U (en) | 2022-06-09 | 2022-06-09 | A device for producing continuous granulation of caprolactam byproduct ammonium sulfate |
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| Publication Number | Publication Date |
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| CN217829914U true CN217829914U (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221430255.8U Active CN217829914U (en) | 2022-06-09 | 2022-06-09 | A device for producing continuous granulation of caprolactam byproduct ammonium sulfate |
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| Country | Link |
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| CN (1) | CN217829914U (en) |
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2022
- 2022-06-09 CN CN202221430255.8U patent/CN217829914U/en active Active
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