CN112843772A - Succinic acid two-stage vacuum continuous cooling crystallizer - Google Patents
Succinic acid two-stage vacuum continuous cooling crystallizer Download PDFInfo
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Abstract
The invention provides a secondary vacuum continuous cooling crystallizer for succinic acid. The succinic acid secondary vacuum continuous cooling crystallizer comprises: the crystallizer comprises a first crystallizer, a slurry pump and a second crystallizer, wherein the output end of the first crystallizer is fixedly connected with the input end of the slurry pump. The succinic acid secondary vacuum continuous cooling crystallizer provided by the invention has the advantages that large-particle succinic acid crystal slurry is obtained through continuous heat exchange cooling crystallization, qualified products are obtained after crystals meeting the requirement of particle size are thickened and centrifugally separated, all the processes of the process are continuous operation, the automation degree is high, the product particle size is uniform, the purity is high, the operation cost is low, the occupied area is small, the crystallizer series can be widely applied to various industries such as food, medicine, deep processing of grains, beverage, light industry, environmental protection, chemical industry and the like, the vacuum cooling crystallizer series can be designed into different models and different process flows according to the characteristics of different materials to be processed, and automatic control systems can be prepared according to the requirements of different users.
Description
Technical Field
The invention relates to the technical field of succinic acid processing equipment, in particular to a succinic acid secondary vacuum continuous cooling crystallizer.
Background
The particle size distribution of succinic acid generally refers to the proportion of particles with a certain particle size or a certain particle size range in the whole crystal, the particle size distribution state of a particle group can be represented by simple tables, drawings and functional forms, the particle size distribution and the shape of the particles can obviously influence the properties and the purposes of crystal slurry and products thereof, in order to master the working condition of a production line and whether the products are qualified, the samples are required to be taken on time in the production process, the particle size distribution of the products is required to be checked, the crushing and classification are also required to measure the particle size, the particle size measurement methods are various, and the commonly used methods comprise a sieve analysis method, a sedimentation method, a laser method, a small hole passing method, an adsorption method and the.
The crystal particle size distribution is measured by the experimental sieve analysis method, the sieve analysis method is the simplest and the earliest and most widely applied particle size measurement method, the particle size distribution can be measured by the sieve analysis method, the average particle size when the cumulative yield is 50% can be obtained by drawing a cumulative particle size characteristic curve, the crystal particle size is measured by the experimental sieve analysis method, and the experimental aim is as follows:
1. understanding the principle and method of the sieve analysis method for measuring the crystal particle size distribution;
2. and drawing a particle size cumulative distribution curve and a frequency distribution curve according to the sieve analysis data.
At present, the granularity and distribution detection of succinic acid has no national standard, the detection standard is determined according to a detection method of similar products, and the detection standard is applied as an industrial standard.
Therefore, it is necessary to provide a secondary vacuum continuous cooling crystallizer for succinic acid to solve the above technical problems.
Disclosure of Invention
The invention provides the succinic acid secondary vacuum continuous cooling crystallizer which has the advantages of short crystallization period, large crystal size, high product purity, attractive appearance, high crystallization capacity and low energy consumption.
In order to solve the technical problem, the succinic acid secondary vacuum continuous cooling crystallizer provided by the invention comprises: the slurry crystallizer comprises a first crystallizer, a slurry pump and a second crystallizer, wherein the output end of the first crystallizer is fixedly connected with the input end of the slurry pump, and the output end of the slurry pump is fixedly connected with the input end of the second crystallizer; the input end of the discharge pump is fixed at the output end of the second crystallizer; the input end of the slurry barrel is fixed at the output end of the discharge pump; the input end of the centrifugal separator is fixed at the output end of the slurry barrel; the input end of the mother liquid barrel is fixed at the output end of the centrifugal separator; the input end of the first mother liquid pump is fixed at the output end of the mother liquid barrel; the input end of the second mother liquor pump is fixed at the output end of the second crystallizer; the input end of the first condenser is fixed at the output end of the first crystallizer; the input end of the condensed water tank is fixed at the output end of the first condenser; and the input end of the second condenser is fixed at the output end of the second crystallizer.
Preferably, a first vertical axial-flow pump is arranged on the first crystallizer, and a second vertical axial-flow pump is arranged on the second crystallizer.
Preferably, a first liquid ring vacuum unit is arranged on the first condenser, and a second liquid ring vacuum unit is arranged on the second condenser.
Preferably, the output end of the second condenser is communicated with the inside of the condensate water tank, the output end of the condensate water tank is fixedly connected with a first condensate water pump, the output end of the first condensate water pump is fixedly connected with a second condensate water pump, and the output end of the second condensate water pump is fixedly connected with the input end of the first crystallizer and the input end of the second crystallizer respectively.
Preferably, the input of first crystallizer is connected external stoste input pipeline, and the stoste is injected into obtain the succinic acid crystal through heat transfer cooling preliminary crystallization behind the inside of first crystallizer, the rethread the thick liquid pump will contain the solution of certain crystal thick liquid ratio and get into in succession the inside of second crystallizer carries out heat transfer cooling crystallization in succession, obtains the succinic acid crystal thick liquid of large granule, through discharge pump sends into large granule succinic acid crystal thick liquid in the thick liquid bucket and stirs, lets in the material after the stirring again centrifuge carries out the centrifugation in, deposits the mother liquor that obtains after the centrifugation in the inside of mother liquor bucket, the rethread first mother liquor pump will the inside mother liquor of mother liquor bucket is sent to the inside of first crystallizer carries out continuous cycle heat transfer crystallization.
Preferably, the input end of the first condenser is connected with the pipeline output end of an external frozen water source, and the input end of the second condenser is connected in parallel with the pipeline output end of the frozen water source.
Preferably, one side of the output end of the first mother liquid pump is fixedly connected with the input end of the first crystallizer, and the other side of the output end of the first mother liquid pump is fixedly connected with the input end of the second crystallizer.
Preferably, the input end of the condensed water tank is respectively provided with a first inlet pipe and a second inlet pipe, the inside of the condensed water tank is provided with a material distribution disc, the material distribution disc is provided with a movable groove, one side of the material distribution disc is provided with a through hole, the center of the material distribution disc is provided with a sliding hole, the inner side of the material distribution disc is provided with a connecting sliding groove, the inner wall of the condensed water tank is fixedly connected with a limit ring, one side of the limit ring is fixedly connected with a telescopic rod, the output end of the telescopic rod is fixedly connected with a telescopic sliding plate, the inner wall of the condensed water tank is rotatably connected with an adjusting rod, the outer surface of the adjusting rod is fixedly connected with a limit sliding block, one end of the adjusting rod is fixedly connected with an adjusting disc, one side of the adjusting disc is provided with an adjusting groove and, the one end fixedly connected with support sleeve of supporting spring, support sleeve's one end fixedly connected with go-between, the inboard fixedly connected with fixture block of go-between, the internal surface sliding connection of adjustment tank has the adjustable ring, one side fixedly connected with telescopic shaft of adjustable ring, the one end fixedly connected with gangboard of telescopic shaft, the surface cover of telescopic shaft is equipped with expanding spring.
Preferably, the surface of branch charging tray with condensate tank's internal surface swing joint, connect the inside of spout with the inside of activity groove communicates each other, the internal surface of spacing ring with the internal surface swing joint of activity groove, the surface of flexible slide with connect the internal surface sliding connection of spout, the surface of adjusting the pole is passed through spacing slider's surface with the internal surface sliding connection of sliding hole, the one end of adjusting the pole is run through one side of condensate tank and is extended to condensate tank's outside.
Preferably, the inside of the clamping groove is communicated with the inside of the adjusting groove, the inner surface of the supporting sleeve is connected with the surface of the supporting sliding shaft in a sliding manner, and one end of the telescopic shaft penetrates through the surface of the adjusting disc and extends to the other side of the adjusting disc.
Compared with the related technology, the succinic acid secondary vacuum continuous cooling crystallizer provided by the invention has the following beneficial effects:
the invention provides a succinic acid secondary vacuum continuous cooling crystallizer, which is designed by the equipment and continuously feeds a succinic acid solution which is evaporated and concentrated to 30 percent of concentration and has the temperature of 80 ℃ into a vacuum first crystallizer, the temperature is reduced to 48 ℃ by taking away heat by part of water through flash evaporation, simultaneously succinic acid crystals are obtained through primary crystallization, the solution containing a certain crystal slurry ratio continuously enters a cooling second crystallizer, large-particle succinic acid crystal slurry is obtained through continuous heat exchange and cooling crystallization, and qualified products are obtained after crystals meeting the particle size requirement are subjected to thickening, centrifugal separation and the like. The vacuum cooling crystallizer series can be designed into different models and different technological processes according to the characteristics of different materials to be treated, and can also be provided with an automatic control system according to different user requirements.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a succinic acid secondary vacuum continuous cooling crystallizer provided by the invention;
FIG. 2 is a schematic structural diagram of a second embodiment of a succinic acid secondary vacuum continuous cooling crystallizer provided by the invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an enlarged view of the portion B shown in FIG. 2;
FIG. 5 is a schematic structural view of the part of the distribution tray shown in FIG. 2;
FIG. 6 is a schematic view of the structure of the regulating disk portion shown in FIG. 4;
fig. 7 is a schematic view showing the construction of a connecting ring portion shown in fig. 4.
Reference numbers in the figures: 1. a first crystallizer, 2, a slurry pump, 3, a second crystallizer, 4, a discharge pump, 5, a slurry barrel, 6, a centrifugal separator, 7, a mother liquor barrel, 8, a first mother liquor pump, 9, a second mother liquor pump, 10, a first vertical axial-flow pump, 11, a second vertical axial-flow pump, 12, a first condenser, 13, a first liquid ring vacuum unit, 14, a condensed water tank, 141, a first feeding pipe, 142, a second feeding pipe, 143, a distribution plate, 144, a movable groove, 145, a through hole, 146, a sliding hole, 147, a connecting sliding groove, 15, a second condenser, 16, a second liquid ring vacuum unit, 17, a first condensed water pump, 18, a second condensed water pump, 19, a limit ring, 191, a telescopic rod, 192, a telescopic sliding plate, 20, a regulating rod, 201, a limit sliding block, 21, a regulating disc, 211, a regulating groove, 212, a clamping groove, 22, a supporting sliding shaft, 221, a supporting spring, 222, a supporting spring, The support sleeve comprises a support sleeve pipe 223, a connecting ring 224, a clamping block 23, an adjusting ring 231, a telescopic shaft 232, a linkage plate 233 and a telescopic spring.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
The first embodiment:
referring to fig. 1, fig. 1 is a schematic structural diagram of a first embodiment of a two-stage vacuum continuous cooling crystallizer for succinic acid according to the present invention.
A succinic acid two-stage vacuum continuous cooling crystallizer comprises: the crystallizer comprises a first crystallizer 1, a slurry pump 2 and a second crystallizer 3, wherein the output end of the first crystallizer 1 is fixedly connected with the input end of the slurry pump 2, and the output end of the slurry pump 2 is fixedly connected with the input end of the second crystallizer 3; the input end of the discharging pump 4 is fixed at the output end of the second crystallizer 3; the input end of the slurry barrel 5 is fixed at the output end of the discharge pump 4; the input end of the centrifugal separator 6 is fixed at the output end of the slurry barrel 5; the input end of the mother liquid barrel 7 is fixed at the output end of the centrifugal separator 6; the input end of the first mother liquid pump 8 is fixed at the output end of the mother liquid barrel 7; the input end of the second mother liquor pump 9 is fixed at the output end of the second crystallizer 3; a first condenser 12, wherein the input end of the first condenser 12 is fixed at the output end of the first crystallizer 1; a condensed water tank 14, wherein the input end of the condensed water tank 14 is fixed at the output end of the first condenser 12; and the input end of the second condenser 15 is fixed at the output end of the second crystallizer 3.
The first crystallizer 1 is provided with a first vertical axial-flow pump 10, and the second crystallizer 3 is provided with a second vertical axial-flow pump 11.
The first condenser 12 is provided with a first liquid ring vacuum unit 13, and the second condenser 15 is provided with a second liquid ring vacuum unit 16.
The output end of the second condenser 15 is communicated with the inside of the condensate water tank 14, the output end of the condensate water tank 14 is fixedly connected with a first condensate water pump 17, the output end of the first condensate water pump 17 is fixedly connected with a second condensate water pump 18, and the output end of the second condensate water pump 18 is fixedly connected with the input end of the first crystallizer 1 and the input end of the second crystallizer 3 respectively.
External stoste input pipeline is connected to the input of first crystallizer 1, and the stoste is injected into through heat transfer cooling preliminary crystallization behind the inside of first crystallizer 1 obtains the succinic acid crystal, the rethread the solution that slurry pump 2 will contain certain crystal thick liquid ratio gets into in succession the inside of second crystallizer 3 carries out heat transfer cooling crystallization in succession, obtains the succinic acid crystal thick liquid of large granule, through discharge pump 4 sends into large granule succinic acid crystal thick liquid stir in the thick liquid bucket 5, lets in the material after the stirring again centrifuge 6 is carried out the centrifugation, deposits the mother liquor that obtains after the centrifugation in the inside of mother liquor bucket 7, the rethread first mother liquor pump 8 will the inside mother liquor of mother liquor bucket 7 is sent to the inside of first crystallizer 1 carries out the heat transfer crystallization of continuous cycle.
The input end of the first condenser 12 is connected with the pipeline output end of an external chilled water source, and the input end of the second condenser 15 is connected in parallel with the pipeline output end of the chilled water source.
One side of the output end of the first mother liquid pump 8 is fixedly connected with the input end of the first crystallizer 1, and the other side of the output end of the first mother liquid pump 8 is fixedly connected with the input end of the second crystallizer 3.
The working principle of the succinic acid secondary vacuum continuous cooling crystallizer provided by the invention is as follows:
when the device is used, a succinic acid solution which is evaporated and concentrated to a concentration of 30% and has a temperature of 80 ℃ continuously enters a vacuum first crystallizer, heat is taken away by part of water in a flash evaporation manner to reduce the temperature to 48 ℃, meanwhile, succinic acid crystals are obtained through primary crystallization, the solution containing a certain crystal slurry ratio continuously enters a cooling second crystallizer, large-particle succinic acid crystal slurry is obtained through continuous heat exchange, cooling and crystallization, and the crystals meeting the particle size requirement are subjected to thickening and centrifugal separation to obtain a qualified product.
The specific process flow is as follows:
s1, before starting, compressed air must be started, all automatic valves of the device can be opened only by compressed air, and the pressure of the compressed air is 0.4-0.8 Mpa;
s2, opening circulating water of the vacuum pump and machine seal cooling water of each circulating pump, wherein the step is very important, if the circulating pump mechanical seal is damaged under the condition of no cooling water, the normal pressure of the circulating water is about 0.2 Mpa;
s3, wiping all valves of the equipment, closing all emptying valves and blowdown valves of the equipment, and opening inlet and outlet valves of all pumps;
s4 checking the steam pressure, slowly opening the steam condensate water emptying valve to empty the steam condensate water;
s5, turning ON a plastic shell type breaker in the control cabinet, turning ON a small-sized breaker of a pump required to be used and a control power supply breaker;
s6, clicking the human-computer interface to enter a parameter setting picture, and inputting the parameters to be set into the system, such as: heating temperature set value, liquid level set value, pressure set value, feeding set value and other system operation parameters;
s7, opening a cooling water circulating pump and a valve on a pipeline, observing whether the pressure of a cooling water inlet is normal or not, wherein the normal pressure is about 0.2Mpa, and if the pressure is abnormal, the circulation pump can be in failure or the valve is not opened;
s8, the first liquid ring vacuum unit 13 is started, and whether the equipment leaks or not is checked (if the equipment leaks, the sound of air suction equipment can be heard).
S9 stopping feeding after the material liquid level of the first crystallizer 1 reaches a set value;
s10, after the material circulates in the first crystallizer 1 for 5 hours, the second liquid ring vacuum unit 16 is started to inspect whether the equipment leaks or not, and if so, the sound of air suction equipment can be heard;
s11, when the vacuum degree of the second crystallizer 3 is larger than-0.085 Mpa, starting a slurry pump A to convey the material to the second crystallizer, and supplementing the raw material into the first crystallizer;
s12, opening a steam stop valve after the material liquid level of the second crystallizer 3 reaches a set value;
s13, circulating the material in the second crystallizer 3 for 5 hours, and then starting the discharging pump 4 to convey the material to the slurry barrel 5;
s14, starting a mixer of the slurry barrel 5, and opening a discharge valve of the slurry barrel 5 to enable the materials to enter a centrifugal separator 6 for centrifugation;
s15 is needed to inspect the temperature, vacuum degree, liquid level and pressure of the equipment when the equipment is normally produced.
Compared with the related technology, the succinic acid secondary vacuum continuous cooling crystallizer provided by the invention has the following beneficial effects:
the succinic acid secondary vacuum continuous cooling crystallizer designed by the equipment continuously feeds a succinic acid solution which is evaporated and concentrated to the concentration of 30% and the temperature of 80 ℃ into a vacuum first crystallizer, takes away heat through the water of a flash evaporation part to reduce the temperature to 48 ℃, simultaneously performs primary crystallization to obtain succinic acid crystals, continuously feeds a solution containing a certain crystal slurry ratio into a cooling second crystallizer, and performs continuous heat exchange, cooling and crystallization to obtain large-particle succinic acid crystal slurry, wherein crystals meeting the requirement of particle size are thickened, centrifugally separated and then qualified products are obtained. The automatic control system can be designed into different models and different process flows, and can also be equipped according to different user requirements.
Second embodiment:
referring to fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, a second embodiment of the present application provides another succinic acid two-stage vacuum continuous cooling crystallizer based on a succinic acid two-stage vacuum continuous cooling crystallizer provided by the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
Specifically, the difference of the succinic acid secondary vacuum continuous cooling crystallizer provided by the second embodiment of the present application lies in that the succinic acid secondary vacuum continuous cooling crystallizer further includes: the input end of the condensed water tank 14 is respectively provided with a first inlet pipe 141 and a second inlet pipe 142, the inside of the condensed water tank 14 is provided with a material distribution disc 143, the material distribution disc 143 is provided with a movable groove 144, one side of the material distribution disc 143 is provided with a through hole 145, the center of the material distribution disc 143 is provided with a sliding hole 146, the inner side of the material distribution disc 143 is provided with a connecting sliding groove 147, the inner wall of the condensed water tank 14 is fixedly connected with a limit ring 19, one side of the limit ring 19 is fixedly connected with a telescopic rod 191, the output end of the telescopic rod 191 is fixedly connected with a telescopic sliding plate 192, the inner wall of the condensed water tank 14 is rotatably connected with an adjusting rod 20, the outer surface of the adjusting rod 20 is fixedly connected with a limit sliding block 201, one end of the adjusting rod 20 is fixedly connected with an adjusting disc 21, one side of the adjusting disc 21, the outer surface cover of support slide shaft 22 is equipped with support spring 221, the one end fixedly connected with support sleeve 222 of support spring 221, the one end fixedly connected with go-between 223 of support sleeve 222, the inboard fixedly connected with fixture block 224 of go-between 223, the internal surface sliding connection of adjustment tank 211 has adjusting ring 23, one side fixedly connected with telescopic shaft 231 of adjusting ring 23, the one end fixedly connected with linkage plate 232 of telescopic shaft 231, the surface cover of telescopic shaft 231 is equipped with expanding spring 233.
The distribution tray 143 is located between the output ends of the first feeding pipe 141 and the second feeding pipe 142, so as to conveniently separate the space inside the condensed water tank 14, thereby facilitating the independent storage and storage of the condensed water input by the first feeding pipe 141 and the second feeding pipe 142, and facilitating the detection and judgment of the condensed water dosage respectively output by the first feeding pipe 141 and the second feeding pipe 142 by separately storing the condensed water output by the first feeding pipe 141 and the second feeding pipe 142;
a corresponding condensed water discharging pipeline is arranged on one side of the condensed water tank 14, so that the condensed water is convenient to output;
the distributing disc 143 is provided with a through hole 145, and when the through hole 145 rotates to the lowest part, the condensed water on two sides can be conveniently conveyed and connected, so that the condensed water injected into the condensed water tank 14 can be conveniently and stably output;
the telescopic rod 191 conveniently drives the distribution tray 143 to slide horizontally and synchronously through the telescopic sliding plate 192 and the connecting sliding groove 147, so that the storage spaces on two sides of the distribution tray 143 are conveniently adjusted, and the space for condensed water input by the first feeding pipe 141 and the second feeding pipe 142 is adjusted in adaptability.
The adjusting plate 21 conveniently drives the distributing plate 143 to rotate and adjust through a sliding structure between the limiting sliding block 201 and the sliding hole 146 on the adjusting rod 20, the distributing plate 143 conveniently drives the through hole 145 to rotate and adjust up and down when rotating, the through hole 145 rotates to the bottom, water sources on two sides of the distributing plate 143 are conveniently communicated and output through the through hole 145, and when the through hole 145 rotates to the top, the water sources on two sides of the distributing plate 143 are blocked and separated.
A connecting ring 223 capable of being adjusted in a telescopic mode is arranged between the adjusting disk 21 and the condensed water tank 14, the connecting ring 223 is clamped with the adjusting groove 211 on the adjusting disk 21 and the inner surface of the clamping groove 212 through a clamping block 224, when the surface of the clamping block 224 is clamped with the inner surface of the clamping groove 212, the adjusting disk 21 is in a fixed state, the phenomenon that the adjusting disk 21 is loosened when the adjusting disk 21 is not used is effectively avoided, and therefore the stability of the adjusting disk 21 is guaranteed;
a pressing type linkage plate 232 is arranged on the adjusting disc 21, the linkage plate 232 drives the adjusting ring 23 to move through the telescopic shaft 231 when being pressed, the adjusting ring 23 pushes the connecting ring 223 to move towards the outside of the adjusting groove 211 synchronously when moving, the adjusting ring 23 drives the clamping block 224 to be separated from the inside of the clamping groove 212 gradually synchronously, when the clamping block 224 is completely separated from the inside of the clamping groove 212, the adjusting disc 21 can rotate and adjust freely, and the use stability of the adjusting disc 21 is guaranteed;
when adjusting disk 21 adjusts to required position, loosen linkage plate 232, linkage plate 232 resets under the elastic force effect of expanding spring 233, and connecting ring 223 moves to the inside of adjusting groove 211 under the elastic force effect of supporting spring 221, and synchronous drive fixture block 224 moves and the joint to the inside that corresponds draw-in groove 212 when connecting ring 223 removes to conveniently carry on spacingly and fixedly to adjusting disk 21.
The surface of minute charging tray 143 with condensate tank 14's internal surface swing joint, connect the inside of spout 147 with the inside of activity groove 144 communicates with each other, the internal surface of spacing ring 19 with the internal surface swing joint of activity groove 144, the surface of flexible slide 192 with connect the internal surface sliding connection of spout 147, adjust the surface of pole 20 and pass through limit slide 201 the surface with the internal surface sliding connection of slide opening 146, the one end of adjusting pole 20 is run through one side of condensate tank 14 and is extended to the outside of condensate tank 14.
The surface of the distributing tray 143 and the inner surface of the condensed water tank 14 adopt a piston type connecting structure, so that the sealing performance of the distributing tray 143 cannot be influenced when the distributing tray 143 performs horizontal movement adjustment or rotation adjustment in the condensed water tank 14.
The inside of the locking groove 212 is communicated with the inside of the adjusting groove 211, the inner surface of the support sleeve 222 is slidably connected with the surface of the support slide shaft 22, and one end of the telescopic shaft 231 penetrates the surface of the adjusting plate 21 and extends to the other side of the adjusting plate 21.
The clamping grooves 212 are at least provided with twenty-four groups and used for being clamped and limited by the clamping blocks 224, so that the stability of the adjusting disc 21 when the adjusting disc is not used is guaranteed.
Has the advantages that:
the space inside condensate water tank 14 is conveniently separated, thereby conveniently carrying out independent storage and storage on the condensate water input by first feed pipe 141 and second feed pipe 142, the condensate water output by first feed pipe 141 and second feed pipe 142 is separately stored, conveniently detecting and judging the condensate water dosage respectively output by first feed pipe 141 and second feed pipe 142, a connecting ring 223 capable of being adjusted in a telescopic mode is arranged between adjusting disk 21 and condensate water tank 14, connecting ring 223 is clamped with the inner surfaces of adjusting groove 211 and clamping groove 212 on adjusting disk 21 through fixture block 224, the surface of fixture block 224 is clamped with the inner surface of clamping groove 212, adjusting disk 21 is in a fixed state, the phenomenon that adjusting disk 21 is loosened when not in use is effectively avoided, and the stability of adjusting disk 21 is guaranteed.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A succinic acid secondary vacuum continuous cooling crystallizer is characterized by comprising:
the slurry crystallizer comprises a first crystallizer, a slurry pump and a second crystallizer, wherein the output end of the first crystallizer is fixedly connected with the input end of the slurry pump, and the output end of the slurry pump is fixedly connected with the input end of the second crystallizer;
the input end of the discharge pump is fixed at the output end of the second crystallizer;
the input end of the slurry barrel is fixed at the output end of the discharge pump;
the input end of the centrifugal separator is fixed at the output end of the slurry barrel;
the input end of the mother liquid barrel is fixed at the output end of the centrifugal separator;
the input end of the first mother liquid pump is fixed at the output end of the mother liquid barrel;
the input end of the second mother liquor pump is fixed at the output end of the second crystallizer;
the input end of the first condenser is fixed at the output end of the first crystallizer;
the input end of the condensed water tank is fixed at the output end of the first condenser;
and the input end of the second condenser is fixed at the output end of the second crystallizer.
2. The two-stage vacuum continuous cooling crystallizer for the succinic acid according to claim 1, wherein a first vertical axial-flow pump is arranged on the first crystallizer, and a second vertical axial-flow pump is arranged on the second crystallizer.
3. The two-stage vacuum continuous cooling crystallizer for the succinic acid according to claim 1, wherein a first liquid ring vacuum unit is arranged on the first condenser, and a second liquid ring vacuum unit is arranged on the second condenser.
4. The two-stage vacuum continuous cooling crystallizer for the succinic acid according to claim 1, wherein the output end of the second condenser is communicated with the inside of the condensed water tank, the output end of the condensed water tank is fixedly connected with a first condensed water pump, the output end of the first condensed water pump is fixedly connected with a second condensed water pump, and the output end of the second condensed water pump is fixedly connected with the input end of the first crystallizer and the input end of the second crystallizer respectively.
5. The succinic acid secondary vacuum continuous cooling crystallizer of claim 1, characterized in that, the input end of the first crystallizer is connected with an external stock solution input pipeline, the stock solution is injected into the first crystallizer and then is subjected to heat exchange cooling primary crystallization to obtain succinic acid crystals, then a solution with a certain crystal slurry ratio is continuously fed into the second crystallizer through the slurry pump to be subjected to continuous heat exchange cooling crystallization to obtain large-particle succinic acid crystal slurry, through the discharge pump sends into large granule succinic acid magma stir in the thick liquid bucket, lets in the material after the stirring again centrifuge is carried out the centrifugation in, stock the mother liquor that obtains after the centrifugation deposits in the inside of mother liquor bucket, the rethread first mother liquor pump will the inside mother liquor of mother liquor bucket is sent to the inside of first crystallizer carries out the heat transfer crystallization of continuously circulating.
6. The two-stage vacuum continuous cooling crystallizer for the succinic acid according to claim 1, wherein the input end of the first condenser is connected with the pipeline output end of an external chilled water source, and the input end of the second condenser is connected in parallel with the pipeline output end of the chilled water source.
7. The two-stage vacuum continuous cooling crystallizer for the succinic acid according to claim 1, wherein one side of the output end of the first mother liquid pump is fixedly connected with the input end of the first crystallizer, and the other side of the output end of the first mother liquid pump is fixedly connected with the input end of the second crystallizer.
8. The secondary vacuum continuous cooling crystallizer for the succinic acid according to claim 1, wherein the input end of the condensed water tank is respectively provided with a first inlet pipe and a second inlet pipe, the inside of the condensed water tank is provided with a material distribution disc, the material distribution disc is provided with a movable groove, one side of the material distribution disc is provided with a through hole, the center of the material distribution disc is provided with a sliding hole, the inner side of the material distribution disc is provided with a connecting sliding groove, the inner wall of the condensed water tank is fixedly connected with a limit ring, one side of the limit ring is fixedly connected with a telescopic rod, the output end of the telescopic rod is fixedly connected with a telescopic sliding plate, the inner wall of the condensed water tank is rotatably connected with an adjusting rod, the outer surface of the adjusting rod is fixedly connected with a limit sliding block, one end of the adjusting rod, one side fixedly connected with of condensate tank supports the slide bar, the surface cover that supports the slide bar is equipped with supporting spring, supporting spring's one end fixedly connected with support sleeve, support sleeve's one end fixedly connected with go-between, the inboard fixedly connected with fixture block of go-between, the internal surface sliding connection of adjustment tank has the adjustable ring, one side fixedly connected with telescopic shaft of adjustable ring, the one end fixedly connected with gangboard of telescopic shaft, the surface cover of telescopic shaft is equipped with expanding spring.
9. The secondary vacuum continuous cooling crystallizer for the succinic acid according to claim 8, wherein the outer surface of the material distribution disc is movably connected with the inner surface of the condensed water tank, the inside of the connecting chute is communicated with the inside of the movable groove, the inner surface of the limit ring is movably connected with the inner surface of the movable groove, the surface of the telescopic sliding plate is slidably connected with the inner surface of the connecting chute, the surface of the adjusting rod passes through the surface of the limit slider and is slidably connected with the inner surface of the sliding hole, and one end of the adjusting rod penetrates through one side of the condensed water tank and extends to the outside of the condensed water tank.
10. The secondary vacuum continuous cooling crystallizer of claim 8, wherein the inside of the clamping groove is communicated with the inside of the adjusting groove, the inner surface of the supporting sleeve is slidably connected with the surface of the supporting slide shaft, and one end of the telescopic shaft penetrates through the surface of the adjusting disk and extends to the other side of the adjusting disk.
Priority Applications (1)
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