CN112870757A - Single-stage vacuum continuous cooling crystallizer for succinic acid - Google Patents
Single-stage vacuum continuous cooling crystallizer for succinic acid Download PDFInfo
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- CN112870757A CN112870757A CN202110292479.0A CN202110292479A CN112870757A CN 112870757 A CN112870757 A CN 112870757A CN 202110292479 A CN202110292479 A CN 202110292479A CN 112870757 A CN112870757 A CN 112870757A
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- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 238000001816 cooling Methods 0.000 title claims abstract description 48
- 239000001384 succinic acid Substances 0.000 title claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 239000002002 slurry Substances 0.000 claims abstract description 26
- 238000002425 crystallisation Methods 0.000 claims abstract description 19
- 230000008025 crystallization Effects 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- 239000012452 mother liquor Substances 0.000 claims description 18
- 239000011550 stock solution Substances 0.000 claims description 17
- 239000000498 cooling water Substances 0.000 claims description 7
- 238000005119 centrifugation Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 abstract description 16
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 20
- 239000000047 product Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010413 mother solution Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005029 sieve analysis Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention provides a single-stage vacuum continuous cooling crystallizer for succinic acid. The succinic acid single-stage vacuum continuous cooling crystallizer comprises: a crystallizer body; the surface of the vertical axial flow pump is fixedly arranged at the bottom of the crystallizer body; the input end of the slurry barrel is fixedly connected with the output end of the crystallizer body; 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 mother liquid barrel is fixedly connected with one side of the output end of the slurry barrel, and the input end of the first mother liquid pump is fixed at the output end of the mother liquid barrel. The succinic acid single-stage vacuum continuous cooling crystallizer provided by the invention has the advantages of short crystallization period, large crystal size, high product purity, attractive appearance, high crystallization capacity, low energy consumption and the like.
Description
Technical Field
The invention relates to the technical field of succinic acid processing equipment, in particular to a single-stage vacuum continuous cooling crystallizer for succinic acid.
Background
The succinic acid particle size distribution generally refers to the proportion of particles with a certain particle size or a certain particle size range in the whole crystal, the distribution state of the particle sizes 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 or not, the samples must be taken on time in the production process, the product is checked for the particle size distribution, and the particle size is required to be measured for crushing and classification.
The succinic acid has various particle size determination methods, commonly used methods comprise a screening method, a sedimentation method, a laser method, a small hole passing method, an adsorption method and the like, the experiment uses the screening method to determine the particle size distribution of crystals, the screening method is the simplest and most-used particle size determination method, and the average particle size when the cumulative yield is 50% can be obtained by drawing a cumulative particle size characteristic curve.
The experiment measures the crystal granularity by a screening method, and aims to:
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 single-stage vacuum continuous cooling crystallizer for succinic acid to solve the above technical problems.
Disclosure of Invention
The invention provides a single-stage vacuum continuous cooling crystallizer for succinic acid, which solves the problem that succinic acid is inconvenient to continuously crystallize and process.
In order to solve the technical problem, the succinic acid single-stage vacuum continuous cooling crystallizer provided by the invention comprises: a crystallizer body; the surface of the vertical axial flow pump is fixedly arranged at the bottom of the crystallizer body; the input end of the slurry barrel is fixedly connected with the output end of the crystallizer body; 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, and the input end of the mother liquid barrel is fixedly connected with one side of the output end of the slurry barrel; 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 crystallizer body; the input end of the discharge pump is fixed at the output end of the crystallizer body; the input end of the condenser is fixed at the output end of the top end of the crystallizer body; the output end of the liquid ring vacuum unit is fixedly connected with the input end of the condenser; the input end of the condensed water tank is fixed at the output end of the condenser; and the input end of the condensate pump is fixed at the output end of the condensate water tank.
Preferably, the input end of the crystallizer body is connected with a stock solution input port, and the stock solution is input into the crystallizer body through the stock solution input port to perform heat exchange, cooling and crystallization.
Preferably, the output end of the discharge pump is fixedly connected with the input end of the slurry barrel, the discharge pump sends the stock solution after heat exchange, cooling and crystallization into the slurry barrel to be stirred, then sends the stirred stock solution into the centrifugal separator to be centrifuged, and puts the mother solution obtained after centrifugation into the mother solution barrel.
Preferably, the output end of the first mother liquid pump is fixedly connected with the input end of the crystallizer body, and the first mother liquid pump conveys the wood leaves in the mother liquid barrel to the interior of the crystallizer body for continuous circulating heat exchange, cooling and crystallization.
Preferably, the inside of thick liquid bucket is provided with first rabbling mechanism, the inside of mother's liquid bucket is provided with second rabbling mechanism.
Preferably, the input end of the second mother liquor pump is connected to the supernatant mother liquor in the crystallizer body, and is used for pumping the supernatant mother liquor out of the crystallizer body.
Preferably, the condenser recovers and condenses steam generated in the crystallizer body to obtain condensed water, and the condensed water is input into the condensed water tank and is sent out by the condensed water pump.
Preferably, the first mother liquid pump, the second mother liquid pump, the discharge pump, the liquid ring vacuum unit and the condensate pump are all communicated with circulating pump cooling water for cooling and heat dissipation.
Preferably, the interior of the condenser is circulated with chilled water to help the chilled water to perform heat exchange condensation on the steam in the crystallizer.
Preferably, one side of the condenser is provided with a steam input pipe and a steam output pipe, the output end of the steam input pipe is fixedly connected with a heat exchange box, the output end of the condensate pump is fixedly connected with a return pipe, one end of the return pipe is fixed on the surface of the heat exchange box, the bottom of the heat exchange box is provided with a water outlet pipe, the interior of the heat exchange box is provided with a heat exchange pipe, the input end of the heat exchange pipe is fixedly connected with the output end of the return pipe, the output end of the heat exchange pipe is fixedly connected with an inlet pipe, the output end of the inlet pipe is fixedly connected with a heat preservation box, the output end of the heat preservation box is fixedly connected with a drain pipe, the interior of the heat exchange box is provided with a drainage cover, one side of the drainage cover is fixedly connected with, one side fixedly connected with adjusting motor of the inner wall of drainage cover, adjusting motor's output fixedly connected with adjusting screw, adjusting screw's surface is provided with adapter sleeve, the internal thread groove has been seted up to adapter sleeve's inside, the internal surface of internal thread groove with adjusting screw's surperficial threaded connection, one side of adapter sleeve is connected with the expansion cover to that, one side fixedly connected with adapter sleeve of expansion cover, the surface of adapter sleeve with the internal surface sliding connection of drainage cover, the inside of adapter sleeve has seted up the connection spout, the internal surface of connecting the spout with the surperficial sliding connection of limit slide.
Compared with the related technology, the succinic acid single-stage vacuum continuous cooling crystallizer provided by the invention has the following beneficial effects:
the invention provides a single-stage vacuum continuous cooling crystallizer for succinic acid, which continuously operates feed liquid evaporated and concentrated to saturation in the crystallizer under the low-temperature condition of the equipment in a vacuum state, has the advantages of short crystallization period, large crystal size, high product purity, attractive appearance, high crystallization capacity, low energy consumption and the like, is widely applied to various industries such as food, medicine, grain deep processing, beverages, light industry, environmental protection, chemical industry and the like, can be designed into different models and different process flows according to the characteristics of different treated materials, and can be provided with an automatic control system according to the requirements of different users.
Drawings
FIG. 1 is a system diagram of a first embodiment of a succinic acid single-stage vacuum continuous cooling crystallizer provided by the invention;
FIG. 2 is a system diagram of a second embodiment of the single-stage vacuum continuous cooling crystallizer for succinic acid provided by the present invention;
fig. 3 is a schematic view of the portion of the drainage mask shown in fig. 2.
Reference numbers in the figures: 1. the crystallizer comprises a crystallizer body, 2, a vertical axial-flow pump, 3, a slurry barrel, 4, a centrifugal separator, 5, a mother liquor barrel, 6, a first mother liquor pump, 7, a second mother liquor pump, 8, a discharge pump, 9, a condenser, 91, a steam input pipe, 92, a steam output pipe, 10, a liquid ring vacuum unit, 11, a condensate water tank, 12, a condensate water pump, 121, a water return pipe, 13, a heat exchange box, 131, a water outlet pipe, 14, a heat exchange pipe, 141, an inlet pipe, 15, a heat insulation box, 151, a water outlet pipe, 16, a drainage cover, 161, a fixing rod, 162, a limiting slide block, 17, an adjusting motor, 171, an adjusting screw rod, 172, a connecting sleeve, 173, an internal thread groove, 18, a telescopic cover, 181, a connecting cover, 182 and a connecting chute.
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 system diagram of a first embodiment of a succinic acid single-stage vacuum continuous cooling crystallizer according to the present invention. A single-stage vacuum continuous cooling crystallizer for succinic acid comprises: a crystallizer body 1; the surface of the vertical axial-flow pump 2 is fixedly arranged at the bottom of the crystallizer body 1; the input end of the slurry barrel 3 is fixedly connected with the output end of the crystallizer body 1; the input end of the centrifugal separator 4 is fixed at the output end of the slurry barrel 3; the input end of the mother liquid barrel 5 is fixed at the output end of the centrifugal separator 4, and the input end of the mother liquid barrel 5 is fixedly connected with one side of the output end of the slurry barrel 3; the input end of the first mother liquid pump 6 is fixed at the output end of the mother liquid barrel 5; the input end of the second mother liquid pump 7 is fixed at the output end of the crystallizer body 1; the input end of the discharging pump 8 is fixed at the output end of the crystallizer body 1; the input end of the condenser 9 is fixed at the output end of the top end of the crystallizer body 1; the output end of the liquid ring vacuum unit 10 is fixedly connected with the input end of the condenser 9; the input end of the condensed water tank 11 is fixed at the output end of the condenser 9; and the input end of the condensed water pump 12 is fixed at the output end of the condensed water tank 11.
The input end of the crystallizer body 1 is connected with a stock solution input port, and the stock solution is input into the crystallizer body 1 through the stock solution input port to be subjected to heat exchange, cooling and crystallization.
The output of discharge pump 8 with the input fixed connection of thick liquid bucket 3, the stock solution after discharge pump 8 will heat transfer cooling crystallization is sent into stir in the thick liquid bucket 3, send into the stock solution after the stirring again centrifuge 4 is interior to carry out the centrifugation, puts into the mother liquor that obtains after the centrifugation the inside of mother liquor bucket 5.
The output end of the first mother liquid pump 6 is fixedly connected with the input end of the crystallizer body 1, and the first mother liquid pump 6 conveys the wood leaves in the mother liquid barrel 5 to the interior of the crystallizer body 1 for continuous circulating heat exchange, cooling and crystallization.
The inside of thick liquid bucket 3 is provided with first rabbling mechanism, the inside of mother's liquid bucket 5 is provided with second rabbling mechanism.
The input end of the second mother liquor pump 7 is connected with the upper clear mother liquor in the crystallizer body 1, and is used for pumping the upper clear mother liquor out of the crystallizer body 1.
The condenser 9 recovers and condenses steam generated in the crystallizer body 1 to obtain condensed water, and the condensed water is input into the condensed water tank 11 and is sent out by the condensed water pump 12.
The first mother liquid pump 6, the second mother liquid pump 7, the discharge pump 8, the liquid ring vacuum unit 10 and the condensate pump 12 are all communicated with circulating pump cooling water for cooling and heat dissipation.
The inside of the condenser 9 is circulated with chilled water to help the chilled water to exchange heat and condense the steam in the crystallizer.
The vacuum continuous cooling crystallizer continuously feeds a succinic acid solution which is evaporated and concentrated to 30% concentration and has the temperature of 80 ℃ into the vacuum crystallizer, the temperature is reduced to 48 ℃ by taking away heat from water in a flash evaporation part, simultaneously, succinic acid crystals are obtained through primary crystallization, the solution containing a certain crystal slurry ratio continuously enters the cooling 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;
all the processes of the process are continuously operated, the automation degree is high, the product granularity is uniform, the purity is high, the operation cost is low, and the occupied area is small.
The working principle of the succinic acid single-stage vacuum continuous cooling crystallizer provided by the invention is as follows:
firstly, continuously feeding a succinic acid solution which is evaporated and concentrated to a concentration of 30% and has a temperature of 80 ℃ into a vacuum crystallizer, taking away heat through a flash evaporation part of water to reduce the temperature to 48 ℃, simultaneously carrying out primary crystallization to obtain succinic acid crystals, continuously feeding the solution containing a certain crystal slurry ratio into a cooling crystallizer, and carrying out continuous heat exchange, cooling and crystallization to obtain large-particle succinic acid crystal slurry, wherein crystals meeting the requirement of particle size are subjected to thickening and centrifugal separation to obtain a qualified product, and 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, starting the liquid ring vacuum unit 10, and inspecting whether the equipment leaks or not, wherein if the equipment leaks, the sound of air suction equipment can be heard;
s9, when the vacuum degree of the crystallizer is larger than-0.085 Mpa, starting a stock solution pump to inject the stock solution into the crystallizer;
s10, after the liquid level of the crystallizer body 1 reaches 1M, starting a vertical axial-flow pump 2 at the bottom of the crystallizer body 1 to circulate feed liquid in the crystallizer body 1;
s11 stopping feeding after the material liquid level of the crystallizer body 1 reaches a set value;
s12, circulating the material in the crystallizer body 1 for 4 hours, starting a vacuum pump, inspecting whether equipment leaks or not, if so, hearing the sound of air suction equipment, and starting a material clearing pump to convey the material to the slurry barrel 3;
s13, starting a slurry barrel 3 stirrer, and opening a discharge valve of the slurry barrel 3 to enable the materials to enter a centrifugal separator 4 for centrifugation;
s14 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 single-stage vacuum continuous cooling crystallizer provided by the invention has the following beneficial effects:
the equipment carries out continuous operation on the feed liquid evaporated and concentrated to be saturated in the crystallizer under the low-temperature condition in the vacuum state, has the advantages of short crystallization period, large crystal size, high product purity, attractive appearance, high crystallization capacity, low energy consumption and the like, is widely applied to various industries such as food, medicine, deep processing of grains, beverage, light industry, environmental protection, chemical industry and the like, can be designed into different models and different process flows according to the characteristics of different materials to be treated, and can be provided with an automatic control system according to the requirements of different users.
Second embodiment:
referring to fig. 2 and fig. 3, a single-stage vacuum continuous cooling crystallizer for succinic acid is provided based on a first embodiment of the present application, and a second embodiment of the present application provides another single-stage vacuum continuous cooling crystallizer for succinic acid. 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, a succinic acid single-stage vacuum continuous cooling crystallizer provided by the second embodiment of the present application is different in that the succinic acid single-stage vacuum continuous cooling crystallizer further includes: a steam input pipe 91 and a steam output pipe 92 are arranged on one side of the condenser 9, the output end of the steam input pipe 91 is fixedly connected with a heat exchange box 13, the output end of the condensate pump 12 is fixedly connected with a return pipe 121, one end of the return pipe 121 is fixed on the surface of the heat exchange box 13, the bottom of the heat exchange box 13 is provided with a water outlet pipe 131, a heat exchange pipe 14 is arranged inside the heat exchange box 13, the input end of the heat exchange pipe 14 is fixedly connected with the output end of the return pipe 121, the output end of the heat exchange pipe 14 is fixedly connected with a lead-in pipe 141, the output end of the lead-in pipe 141 is fixedly connected with a heat preservation box 15, the output end of the heat preservation box 15 is fixedly connected with a drain pipe 151, a drainage cover 16 is arranged inside the heat exchange box 13, and one side of, inner wall fixedly connected with limit slide 162 of drainage cover 16, one side fixedly connected with adjusting motor 17 of the inner wall of drainage cover 16, adjusting motor 17's output fixedly connected with adjusting screw 171, adjusting screw 171's surface is provided with adapter sleeve 172, interior thread groove 173 has been seted up to adapter sleeve 172's inside, interior thread groove 173's internal surface with adjusting screw 171's surface threaded connection, one side of adapter sleeve 172 is connected with telescopic cover 18 to that, one side fixedly connected with connecting cover 181 of telescopic cover 18, the surface of connecting cover 181 with the internal surface sliding connection of drainage cover 16, connecting chute 182 has been seted up to the inside of connecting cover 181, the internal surface of connecting chute 182 with limit slide 162's surface sliding connection.
The heat insulation box 15 is convenient for storing the warm water after heat exchange;
the drain pipe 151 facilitates discharge of warm water inside the incubator 15;
the output end of the water outlet pipe 131 is connected with the condensed water tank 11, so that the water source condensed in the steam can be conveniently returned to the inside of the condensed water tank 11 for recycling.
The input end of the steam input pipe 91 is connected with the steam output end of the crystallizer body 1, so that steam can conveniently exchange heat with a water source between the steam entering the interior of the condenser 9, partial heat in the steam is exchanged into condensed water through the heat exchange pipe 14 to obtain warm water, and the warm water is input into the heat insulation box 15 through the heat exchange pipe 14 and the lead-in pipe 141 to be stored, so that the warm water can be conveniently stored, and a foundation is provided for heat recovery and utilization;
the inside of heat exchange box 13 is provided with drainage cover 16 and the flexible cover 18 that can stretch out and draw back the regulation, conveniently carries out the drainage to the whole of pouring into for the temperature in the steam can be more comprehensive contact with heat exchange pipe 14, the stability of guarantee heat exchange.
When the telescopic range of the telescopic cover 18 needs to be adjusted, the adjusting motor 17 is started, the adjusting motor 17 drives the adjusting screw rod 171 to rotate, the adjusting screw rod 171 drives the connecting sleeve 172 to perform horizontal movement adjustment through the inner thread groove 173 when rotating, and the connecting sleeve 172 is in sliding connection with the inner surface of the connecting sliding groove 182 through the limiting slide block 162 when moving horizontally, so that the stability of the connecting sleeve 172 during horizontal sliding is guaranteed.
Has the advantages that:
the input end of the steam input pipe 91 is connected with the steam output end of the crystallizer body 1, so that steam can conveniently exchange heat with a water source between the steam entering the interior of the condenser 9, partial heat in the steam is exchanged into condensed water through the heat exchange pipe 14 to obtain warm water, and the warm water is input into the heat insulation box 15 through the heat exchange pipe 14 and the lead-in pipe 141 to be stored, so that the warm water can be conveniently stored, and a foundation is provided for heat recovery and utilization;
the inside of heat exchange box 13 is provided with drainage cover 16 and the flexible cover 18 that can stretch out and draw back the regulation, conveniently carries out the drainage to the whole of pouring into for the temperature in the steam can be more comprehensive contact with heat exchange pipe 14, the stability of guarantee heat exchange.
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 single-stage vacuum continuous cooling crystallizer for succinic acid is characterized by comprising the following components:
a crystallizer body;
the surface of the vertical axial flow pump is fixedly arranged at the bottom of the crystallizer body;
the input end of the slurry barrel is fixedly connected with the output end of the crystallizer body;
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, and the input end of the mother liquid barrel is fixedly connected with one side of the output end of the slurry barrel;
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 crystallizer body;
the input end of the discharge pump is fixed at the output end of the crystallizer body;
the input end of the condenser is fixed at the output end of the top end of the crystallizer body;
the output end of the liquid ring vacuum unit is fixedly connected with the input end of the condenser;
the input end of the condensed water tank is fixed at the output end of the condenser;
and the input end of the condensate pump is fixed at the output end of the condensate water tank.
2. The succinic acid single-stage vacuum continuous cooling crystallizer of claim 1, wherein the input end of the crystallizer body is connected with a stock solution input port, and the stock solution input port inputs the stock solution into the interior of the crystallizer body for heat exchange, cooling and crystallization.
3. The succinic acid single-stage vacuum continuous cooling crystallizer of claim 2, characterized in that the output end of the discharge pump is fixedly connected with the input end of the slurry barrel, the discharge pump sends the stock solution after heat exchange, cooling and crystallization into the slurry barrel for stirring, then sends the stirred stock solution into the centrifugal separator for centrifugation, and puts the mother liquor obtained after centrifugation into the interior of the mother liquor barrel.
4. The succinic acid single-stage vacuum continuous cooling crystallizer of claim 3, wherein the output end of the first mother liquid pump is fixedly connected with the input end of the crystallizer body, and the first mother liquid pump conveys the wood leaves in the mother liquid barrel to the interior of the crystallizer body for continuous circulation heat exchange cooling crystallization.
5. The succinic acid single-stage vacuum continuous cooling crystallizer of claim 1, wherein a first stirring mechanism is arranged inside the slurry barrel, and a second stirring mechanism is arranged inside the mother liquid barrel.
6. The succinic acid single-stage vacuum continuous cooling crystallizer of claim 1, wherein the input end of the second mother liquor pump is connected with the supernatant mother liquor in the crystallizer body for pumping the supernatant mother liquor out of the crystallizer body.
7. The succinic acid single-stage vacuum continuous cooling crystallizer of claim 1, wherein the condenser recovers and condenses steam generated inside the crystallizer body to obtain condensed water, the condensed water is input inside the condensed water tank, and the condensed water is sent out by the condensed water pump.
8. The succinic acid single-stage vacuum continuous cooling crystallizer of claim 1, wherein the first mother liquid pump, the second mother liquid pump, the discharge pump, the liquid ring vacuum unit and the condensate pump are all communicated with a circulating pump cooling water for cooling and heat dissipation.
9. The succinic acid single-stage vacuum continuous cooling crystallizer of claim 1, wherein chilled water is circulated in the condenser to help the condenser to exchange heat and condense steam in the crystallizer.
10. The succinic acid single-stage vacuum continuous cooling crystallizer of claim 1, wherein one side of the condenser is provided with a steam input pipe and a steam output pipe, the output end of the steam input pipe is fixedly connected with a heat exchange box, the output end of the condensate pump is fixedly connected with a return pipe, one end of the return pipe is fixed on the surface of the heat exchange box, the bottom of the heat exchange box is provided with a water outlet pipe, the interior of the heat exchange box is provided with a heat exchange pipe, the input end of the heat exchange pipe is fixedly connected with the output end of the return pipe, the output end of the heat exchange pipe is fixedly connected with an inlet pipe, the output end of the inlet pipe is fixedly connected with a heat preservation box, the output end of the heat preservation box is fixedly connected with a drain pipe, the interior of the heat exchange box is provided with a drainage cover, one, the inner wall fixedly connected with limit slide block of drainage cover, one side fixedly connected with adjusting motor of the inner wall of drainage cover, adjusting motor's output fixedly connected with adjusting screw, adjusting screw's surface is provided with adapter sleeve, the internal thread groove has been seted up to adapter sleeve's inside, the internal surface in internal thread groove with adjusting screw's surface threaded connection, one side of adapter sleeve is connected with the expansion cover to that, one side fixedly connected with adapter cover of expansion cover, the surface of adapter cover with the internal surface sliding connection of drainage cover, the connecting spout has been seted up to the inside of adapter cover, the internal surface of connecting the spout with limit slide block's surface sliding connection.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956987A (en) * | 2022-06-13 | 2022-08-30 | 浙江贝诺机械有限公司 | Succinic acid re-melting purification and recrystallization process |
-
2021
- 2021-03-18 CN CN202110292479.0A patent/CN112870757A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956987A (en) * | 2022-06-13 | 2022-08-30 | 浙江贝诺机械有限公司 | Succinic acid re-melting purification and recrystallization process |
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