CN109467106B - Production process and device of ionic membrane caustic soda - Google Patents
Production process and device of ionic membrane caustic soda Download PDFInfo
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- CN109467106B CN109467106B CN201811533327.XA CN201811533327A CN109467106B CN 109467106 B CN109467106 B CN 109467106B CN 201811533327 A CN201811533327 A CN 201811533327A CN 109467106 B CN109467106 B CN 109467106B
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- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
Abstract
The invention discloses a production process and a device of ionic membrane caustic soda, wherein a salt dissolving device comprises: a salt dissolving pool; a salt dissolving tank; the outer wall of the bottom of the salt melting tank is in seamless fit with the inner ring of the annular plate, so that the space of the salt melting tank below the salt melting tank is divided into independent spaces; the water spraying device continuously pumps hot water in the hot water tank to the spray holes through the water pump to spray out and scour the bottom of the salt dissolving tank; a breather pipe; one end of the water outlet pipe is communicated with the independent space, the other end of the water outlet pipe extends out of the salt melting tank and is communicated with a water inlet of a first backflow pump, a water outlet of the first backflow pump is communicated with one end of a water inlet pipe, and the other end of the water inlet pipe is communicated with the upper part of the salt melting tank and is positioned between the tank wall of the salt melting tank and the tank wall of the salt melting tank; a vibration motor. The method has the advantages of improving the reaction rate of the raw salt and ensuring the concentration of the prepared saturated brine, and can be widely applied to the technical field of production processes and devices of ion membrane caustic soda.
Description
Technical Field
The invention relates to the technical field of production process and device of ionic membrane caustic soda. More specifically, the invention relates to a production process and a device of ionic membrane caustic soda.
Background
In the saturated salt water preparation process in the caustic soda preparation process, salt is required to be poured into a salt dissolving pool, a spray head connected with a water pipe is arranged at the bottom of the salt dissolving pool, water is continuously sprayed in the spray head to wash a salt layer, so that the aim of preparing saturated salt water is fulfilled,
however, the storage condition of the raw salt is poor, or the storage time is too long, the raw salt is agglomerated, so that the salt dissolving speed is too slow, or the concentration of the prepared saturated brine is not enough, and the whole saturated brine preparation process is affected.
Disclosure of Invention
The invention aims to provide a production process and a device of ion membrane caustic soda, which can improve the reaction rate of raw salt and ensure the concentration of prepared saturated brine.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a process for producing ionic membrane caustic soda, including a step of preparing saturated brine using a salt dissolving device, the salt dissolving device including:
the salt dissolving pool is in a cylindrical groove shape; the lower part of the inner cavity of the salt melting pool is coaxially provided with a horizontal ring plate, and the outer ring of the horizontal ring plate is fixed on the wall of the salt melting pool in a seamless manner for one circle;
the salt dissolving tank is in a shape of a circular truncated cone with a large upper part and a small lower part; the groove wall and the groove bottom of the salt melting groove are both in a mesh shape, and meshes at the groove bottom are larger than meshes at the groove wall; the salt dissolving tank is coaxially arranged at the middle upper part of the salt dissolving pool;
the outer wall of the bottom of the salt melting tank is in seamless fit with the inner ring of the annular plate, so that the space of the salt melting tank below the salt melting tank is divided into independent spaces;
the water spraying device is arranged in the independent space, a spray hole of the water spraying device faces the bottom of the salt melting tank, and the water spraying device continuously pumps hot water in the hot water tank to the spray hole through a water pump to spray out and scour the bottom of the salt melting tank;
one end of the vent pipe is communicated with the independent space, and the other end of the vent pipe is vertically upward and communicated with the atmosphere;
one end of the water outlet pipe is communicated with the independent space, the other end of the water outlet pipe extends out of the salt melting tank and is communicated with a water inlet of a first backflow pump, a water outlet of the first backflow pump is communicated with one end of a water inlet pipe, and the other end of the water inlet pipe is communicated with the upper part of the salt melting tank and is positioned between the tank wall of the salt melting tank and the tank wall of the salt melting tank;
the vibration motors are multiple and are uniformly fixed on the side wall of the salt melting pool for one circle.
Preferably, the water spray device includes:
the central through hole of the driving wheel is connected with the output shaft of the first motor and is driven by the first motor to rotate;
the driven wheel is in transmission connection with the driving wheel through a closed-loop transmission belt;
the water pipes are uniformly arranged on the outer surface of the transmission belt at intervals along the transmission direction of the transmission belt, the length direction of each water pipe is perpendicular to the transmission direction of the transmission belt, one end of each water pipe is closed, and the other end of each water pipe is communicated to a first soft pipe; the closed end of the first soft pipe surrounds the transmission belt for a circle along the transmission direction of the transmission belt, and the non-closed end of the first soft pipe is communicated to the hot water tank through the water pump; a plurality of spray holes are formed in one side, far away from the transmission belt, of the side wall of the water pipe;
the length of the first soft pipe is set to be not interfered with the forward transmission of the transmission belt for one circle and not interfered with the reverse transmission of the transmission belt for one circle.
Preferably, the lower surface of the ring plate is also provided with a sealing plate for sealing a central hole of the ring plate, and one end of the sealing plate is fixed on one side of the ring plate close to the central hole through a vertical pin shaft;
when the sealing plate rotates around the pin shaft to the position below the central hole of the ring plate, the central hole of the ring plate can be sealed; when the sealing plate rotates to one side around the pin shaft, the central hole of the annular plate can be completely exposed.
Preferably, the sealing plate is provided with a ring of sealing ring at the periphery of the upper surface.
Preferably, the production process and device of the ionic membrane caustic soda further comprise a stirring device, which comprises:
the second motor is arranged right above the salt melting tank, an output shaft of the second motor is vertically downward and is coaxially connected with a rotating shaft, and a plurality of blades are horizontally arranged at the lower end of the rotating shaft;
the rotating shaft is provided with an annular inner hollow structure coaxial with the rotating shaft; the outer wall of the upper end of the rotating shaft is recessed for a circle to form an annular gap, and the gap is communicated with the inner hollow structure;
one end of the first pipeline is arranged between the salt dissolving tank and the side wall of the salt dissolving pool, the other end of the first pipeline is communicated with a water inlet of the second reflux pump, and a water outlet of the second reflux pump is communicated to the inner hollow structure;
the outer wall of the rotating shaft is sunken inwards to form a plurality of water outlet holes communicated with the hollow structure in the rotating shaft.
The device for the production process of the ionic membrane caustic soda comprises the salt dissolving device.
The invention at least comprises the following beneficial effects:
the invention divides the original salt into large-particle original salt and small-particle original salt, washes the large-particle original salt by the hottest water to quickly dissolve the large-particle original salt to form salt water with a certain temperature, then uses the salt water with a certain temperature to dissolve the small-particle original salt, the particles are smaller and can be quickly dissolved in the saline water with temperature to obtain the saline water with lower temperature, and finally a rotatable rotating shaft is inserted in the middle of the raw salt accumulated in the salt dissolving tank, and pumping the salt water with lower temperature into the middle part of the original salt pile through a rotating shaft, increasing the contact area of the water and the original salt to accelerate the dissolution of the original salt, and the blade is arranged on the rotating shaft, so that large-particle raw salt can be cut into small-particle raw salt, the dissolution of the raw salt is accelerated, and the saturation of the dissolved brine is ensured.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of FIG. 1A of the present invention;
FIG. 3 is a schematic structural view of the water spraying device according to the present invention;
FIG. 4 is a diagram showing the connection between the water pipe and the first soft pipe according to the present invention;
FIG. 5 is a bottom view of the ring plate and seal plate connection of the present invention.
Description of reference numerals: 1. salt dissolving pool, 2, ring plate, 3, salt dissolving groove, 4, water injector, 5, independent space, 6, vent pipe, 7, outlet pipe, 8, first reflux pump, 9, inlet pipe, 10, driving wheel, 11, driving belt, 12, driven wheel, 13, water pipe, 14, first soft pipe, 15, sealing plate, 16, pin shaft, 17, the center hole of ring plate, 18, second motor, 19, rotating shaft, 20, blade, 21, interior hollow structure, 22, gap, 23, first pipeline, 24, connecting part, 25, supporting part, 26, second reflux pump, 27, apopore, 28, spray hole.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 5, the present invention provides a process for producing ionic membrane caustic soda, comprising a step of preparing saturated brine by using a salt dissolving device, wherein the salt dissolving device comprises:
the salt dissolving pool 1 is in a cylindrical groove shape; the lower part of the inner cavity of the salt melting pool 1 is coaxially provided with a horizontal ring plate 2, and the outer ring of the horizontal ring plate is fixed on the wall of the salt melting pool 1 in a seamless way;
the salt dissolving tank 3 is in a shape of a circular truncated cone with a large upper part and a small lower part; the groove wall and the groove bottom of the salt dissolving groove 3 are both in a mesh shape, and meshes at the groove bottom are larger than meshes at the groove wall; the salt dissolving tank 3 is coaxially arranged at the middle upper part of the salt dissolving pool 1;
the outer wall of the bottom of the salt melting tank 3 is in seamless fit with the inner ring of the annular plate 2, so that the space of the salt melting tank 1 below the salt melting tank 3 is divided into an independent space 5;
the water spraying device 4 is arranged in the independent space 5, the spray holes 28 of the water spraying device 4 face the bottom of the salt dissolving tank 3, and the water spraying device 4 continuously pumps hot water in the hot water tank to the spray holes 28 through a water pump to spray out and scour the bottom of the salt dissolving tank 3;
a ventilation pipe 6, one end of which is communicated with the independent space 5, and the other end of which is vertically upward and communicated with the atmosphere;
one end of the water outlet pipe 7 is communicated with the independent space 5, the other end of the water outlet pipe extends out of the salt melting tank 1 and is communicated with a water inlet of the first backflow pump 8, a water outlet of the first backflow pump 8 is communicated with one end of a water inlet pipe 9, and the other end of the water inlet pipe 9 is communicated with the upper part of the salt melting tank 1 and is positioned between the tank wall of the salt melting tank 3 and the tank wall of the salt melting tank 1;
the vibration motors are multiple and are uniformly fixed on the side wall of the salt melting tank 1 for one circle.
In this solution, the water spray 4 is always located above the salt water in the separate space 5. The raw salt is poured into the salt dissolving tank 3, the raw salt with smaller particles can enter the upper part of the salt dissolving pool 1 from the tank wall of the salt dissolving tank 3, the crude salt with larger particles enters the lower part of the salt melting tank 1 from the tank bottom of the salt melting tank 3, the water spraying device 4 pumps the hot water in the hot water tank into the independent space 5 at the lower part of the salt melting tank 1, the spray holes 28 of the water spraying device 4 continuously wash against the tank bottom of the salt melting tank 3, thereby continuously dissolving the large-particle crude salt leaked from the tank bottom of the salt melting tank 3, because of the introduced hot water, the larger raw salt particles can be dissolved faster, and then the salt water in the independent space 5 is pumped into the lower part of the salt dissolving tank 1 through the first reflux pump 8, at this time, the small-particle raw salt falling into the upper part of the salt dissolving tank 1 is also dissolved by the brine, at the moment, the hot water also has heat, and the small-particle raw salt is also rapidly dissolved, so that the process is continued until the brine reaches a saturated state. The vibration motor is adopted to vibrate continuously, so that the wall of the salt melting tank 3 is prevented from being blocked by large-particle raw salt.
The upper end surface of the salt dissolving tank 3 extends upwards to form a cylindrical connecting part 24, the upper part of the connecting part 24 extends outwards horizontally to form an annular supporting part 25, and the supporting part 25 is just supported on the upper end surface of the salt dissolving pool 1. After salt dissolving, the salt dissolving tank 3 can be taken out, so that the prepared saturated salt water can be conveniently pumped out to the next process through a pump, and a discharge hole which can be opened and closed can be formed in the position, close to the upper part of the annular plate 2, of the tank wall of the salt dissolving tank 1.
In another solution, the water spraying device 4 comprises:
the central through hole of the driving wheel 10 is connected with the output shaft of the first motor and is driven by the first motor to rotate;
the driven wheel 12 is in transmission connection with the driving wheel 10 through a closed-loop transmission belt 11;
the water pipes 13 are uniformly arranged on the outer surface of the transmission belt 11 at intervals along the transmission direction of the transmission belt 11, the length direction of each water pipe 13 is perpendicular to the transmission direction of the transmission belt 11, one end of each water pipe 13 is closed, and the other end of each water pipe 13 is communicated to a first soft pipe 14; the closed end of the first soft tube 14 surrounds the transmission belt 11 for one circle along the transmission direction of the transmission belt 11, and the non-closed end of the first soft tube 14 is communicated to the hot water tank through the water pump; a plurality of spray holes 28 are formed in one side of the side wall of the water pipe 13, which is far away from the transmission belt 11;
wherein the length of the first soft tube 14 is set not to interfere with the forward driving of the driving belt 11 for one turn and not to interfere with the reverse driving of the driving belt 11 for one turn.
In this kind of technical scheme, open first motor, action wheel 10 rotates to drive belt 11 and follow driving wheel 12 and rotate, and make the water pipe 13 of drive belt 11 upper surface constantly make a round trip to pass through the tank bottom of salt dissolving groove 3, guarantee that all meshes homoenergetic of salt dissolving groove 3 are washed away by hot water. In order to avoid the overlong length of the first soft tube 14, the first motor rotates forward first, so that the driving belt 11 rotates for a circle in one direction, then the first motor is turned off, the first motor is turned on for reverse rotation, so that the driving belt 11 rotates for a circle in the opposite direction, the first motor is turned on for forward rotation after shutdown, and the operation is repeated. Fig. 4 only shows one nozzle hole 28. The periphery of the transmission belt 11 protrudes out of the bottom of the salt dissolving tank 3, that is, a brushing surface formed by a plurality of water pipes on the upper surface of the transmission belt can cover the bottom of the salt dissolving tank.
The hot water in the hot water tank is pumped into the first soft pipe 14 under the action of the water pump, flows into the water pipe 13 communicated with the first soft pipe 14 and is sprayed out from the spray hole 28 of the water pipe 13.
In another technical scheme, a sealing plate 15 for sealing a central hole 17 of the ring plate 2 is further arranged on the lower surface of the ring plate 2, and one end of the sealing plate 15 is fixed on one side, close to the central hole, of the ring plate 2 through a vertical pin shaft 16;
when the sealing plate 15 rotates around the pin 16 to the position below the central hole of the ring plate 2, the central hole 17 of the ring plate 2 can be sealed; when the sealing plate 15 is rotated to one side around the pin 16, the central hole 17 of the ring plate 2 can be completely exposed.
In this kind of technical scheme, after the salt melting, seal the centre bore 17 department of cyclic annular board 2, take out independent space 5's salt solution to the upper portion of salt melting pond 1 through first backwash pump 8, at this moment, in time do not set up the discharge gate at the pool wall of salt melting pond 1, also need not to take out salt melting groove 3, also can pump out the saturated salt solution on salt melting pond 1 upper portion to next technology through the pump. As shown in fig. 5, the position indicated by the broken line is a position where the seal plate 15 is rotated to a position below the center hole of the ring plate 2.
In another technical solution, a ring of sealing ring is arranged on the periphery of the upper surface of the sealing plate 15.
In this kind of technical scheme, guarantee that the sealed effect of closing plate 15 to ring plate centre bore 17 is good through setting up the sealing washer.
In another technical scheme, the production process of the ionic membrane caustic soda further comprises a stirring device, and the stirring device comprises:
the second motor 18 is arranged right above the salt melting tank 3, an output shaft of the second motor 18 is vertically downward and is coaxially connected with a rotating shaft 19, and a plurality of blades 20 are horizontally arranged at the lower end of the rotating shaft 19;
the rotating shaft 19 is provided with an annular inner hollow structure 21 coaxial with the rotating shaft; the outer wall of the upper end of the rotating shaft 19 is recessed for a circle to form an annular gap 22, and the gap 22 is communicated with the inner hollow structure 21;
a first pipeline 23, one end of which is arranged between the salt melting tank 3 and the side wall of the salt melting pond 1, the other end of the first pipeline 23 is communicated with the water inlet of the second reflux pump 26, and the water outlet of the second reflux pump 26 is communicated to the inner hollow structure 21;
the outer wall of the rotating shaft 19 is recessed to form a plurality of water outlet holes 27 which are communicated with the hollow structure 21.
In this kind of technical scheme, through second backwash pump 26 with salt solution pond 1 upper portion salt solution pump in interior hollow structure 21 to flow out through apopore 27, further dissolve the accumulational former salt in the middle part of salt solution groove 3, increase the area of contact of former salt and water, make the former salt dissolve faster. And after the second motor 18 is started, the blade 20 is driven to rotate, and the blade 20 has tangential force on the original salt, so that the large-particle original salt can be cut into small-particle original salt, and the dissolution of the original salt is accelerated. And the second motor 18 is turned on to drive the water outlet hole 27 to rotate.
The device for the production process of the ionic membrane caustic soda comprises the salt dissolving device.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (4)
1. The production process of the ionic membrane caustic soda is characterized by comprising a step of preparing saturated brine by adopting a salt dissolving device, wherein the salt dissolving device comprises:
the salt dissolving pool is in a cylindrical groove shape; the lower part of the inner cavity of the salt melting pool is coaxially provided with a horizontal ring plate, and the outer ring of the horizontal ring plate is fixed on the wall of the salt melting pool in a seamless manner for one circle;
the salt dissolving tank is in a shape of a circular truncated cone with a large upper part and a small lower part; the groove wall and the groove bottom of the salt melting groove are both in a mesh shape, and meshes at the groove bottom are larger than meshes at the groove wall; the salt dissolving tank is coaxially arranged at the middle upper part of the salt dissolving pool;
the outer wall of the bottom of the salt melting tank is in seamless fit with the inner ring of the annular plate, so that the space of the salt melting tank below the salt melting tank is divided into independent spaces;
the water spraying device is arranged in the independent space, a spray hole of the water spraying device faces the bottom of the salt melting tank, and the water spraying device continuously pumps hot water in the hot water tank to the spray hole through a water pump to spray out and scour the bottom of the salt melting tank;
one end of the vent pipe is communicated with the independent space, and the other end of the vent pipe is vertically upward and communicated with the atmosphere;
one end of the water outlet pipe is communicated with the independent space, the other end of the water outlet pipe extends out of the salt melting tank and is communicated with a water inlet of a first backflow pump, a water outlet of the first backflow pump is communicated with one end of a water inlet pipe, and the other end of the water inlet pipe is communicated with the upper part of the salt melting tank and is positioned between the tank wall of the salt melting tank and the tank wall of the salt melting tank;
a plurality of vibration motors are uniformly fixed on the side wall of the salt melting tank for one circle;
an agitation apparatus, comprising:
the second motor is arranged right above the salt melting tank, an output shaft of the second motor is vertically downward and is coaxially connected with a rotating shaft, and a plurality of blades are horizontally arranged at the lower end of the rotating shaft;
the rotating shaft is provided with an annular inner hollow structure coaxial with the rotating shaft; the outer wall of the upper end of the rotating shaft is recessed for a circle to form an annular gap, and the gap is communicated with the inner hollow structure;
one end of the first pipeline is arranged between the salt dissolving tank and the side wall of the salt dissolving pool, the other end of the first pipeline is communicated with a water inlet of a second reflux pump, and a water outlet of the second reflux pump is communicated to the inner hollow structure;
the outer wall of the rotating shaft is sunken to form a plurality of water outlet holes communicated with the hollow structure in the rotating shaft;
the water spray device includes:
the central through hole of the driving wheel is connected with the output shaft of the first motor and is driven by the first motor to rotate;
the driven wheel is in transmission connection with the driving wheel through a closed-loop transmission belt;
the water pipes are uniformly arranged on the outer surface of the transmission belt at intervals along the transmission direction of the transmission belt, the length direction of each water pipe is perpendicular to the transmission direction of the transmission belt, one end of each water pipe is closed, and the other end of each water pipe is communicated to a first soft pipe; the closed end of the first soft pipe surrounds the transmission belt for a circle along the transmission direction of the transmission belt, and the non-closed end of the first soft pipe is communicated to the hot water tank through the water pump; a plurality of spray holes are formed in one side, far away from the transmission belt, of the side wall of the water pipe;
the length of the first soft pipe is set to be not interfered with the forward transmission of the transmission belt for one circle and not interfered with the reverse transmission of the transmission belt for one circle.
2. The process for producing ionic membrane caustic soda as claimed in claim 1, wherein the lower surface of the ring plate is further provided with a sealing plate for sealing the central hole thereof, and one end of the sealing plate is fixed to one side of the ring plate close to the central hole by a vertical pin;
when the sealing plate rotates around the pin shaft to the position below the central hole of the ring plate, the central hole of the ring plate can be sealed; when the sealing plate rotates to one side around the pin shaft, the central hole of the annular plate can be completely exposed.
3. The process for producing ionic membrane caustic soda as claimed in claim 2, wherein a ring of sealing ring is provided around the upper surface of the sealing plate.
4. A device for the production process of the ionic membrane caustic soda as claimed in any one of claims 1 to 3, which comprises the salt dissolving device.
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| CN201811533327.XA CN109467106B (en) | 2018-12-14 | 2018-12-14 | Production process and device of ionic membrane caustic soda |
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| CN201811533327.XA CN109467106B (en) | 2018-12-14 | 2018-12-14 | Production process and device of ionic membrane caustic soda |
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