CN216571633U - Preparation facilities of high-quality heavy soda ash of liquid phase - Google Patents
Preparation facilities of high-quality heavy soda ash of liquid phase Download PDFInfo
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- CN216571633U CN216571633U CN202123161743.1U CN202123161743U CN216571633U CN 216571633 U CN216571633 U CN 216571633U CN 202123161743 U CN202123161743 U CN 202123161743U CN 216571633 U CN216571633 U CN 216571633U
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Abstract
The utility model discloses a preparation device of liquid-phase high-quality heavy soda ash, which comprises a crystallizer, a thickening pump, a suspension separator, a centrifuge, a calcining furnace, a mother liquor barrel and a mother liquor pump, wherein the crystallizer is connected with the thickening pump through a crystallization liquor pipeline; the breaking filter is connected with a suspension separator through a breaking crystallization liquid pipeline, and the suspension separator is connected with a centrifuge through a thickening crystallization liquid pipeline; the separated clear liquid of the suspension separator is connected to a mother liquid barrel through a clear liquid separating pipeline, and the centrifugal mother liquid of the centrifuge is connected to the mother liquid barrel through a centrifugal mother liquid pipeline; the mother liquor barrel is connected to a crystallizer alkali liquor port through a clear mother liquor pipeline, and a mother liquor pump is arranged on the clear mother liquor pipeline; and (3) feeding the soda water generated by the centrifuge into the calcining furnace by a conveying device. The utility model has the advantages of fast crystallization, uniform crystallization particles, low cost, stability, high yield and high product quality.
Description
Technical Field
The utility model relates to a soda ash preparation device, in particular to a liquid-phase high-quality heavy soda ash preparation device.
Background
Soda ash is an important chemical raw material, is known as 'mother of chemical industry', is chemically named as sodium carbonate, is also named as soda or soda ash, is an inorganic compound which is white odorless powder or particles at normal temperature, and has strong stability. The soda ash product can be mainly divided into heavy soda ash and light soda ash, wherein the heavy soda ash is prepared by performing a hydration reaction on the light soda ash and water under a certain temperature condition and then performing steam calcination and dehydration on the monohydrate soda ash, the two soda ash have no difference in chemical formula, but the two soda ash have great difference in physical properties such as bulk density, particle size and shape, generally the light soda ash has a density of 500 and 600kg/m for thin film mining, and the heavy soda ash has a density of 1000 and 1200kg/m for thin film mining. In addition, the two applications are also different, and the heavy soda ash has dense and smooth crystallization and large and uniform crystallization particles, so the heavy soda ash is multipurpose for manufacturing high-grade glass, such as float glass, photovoltaic glass, lenses and the like, and also has wide application in industries such as metallurgy, pigment and the like.
The production method of the heavy soda ash mainly comprises an extrusion method, a solid phase hydration method, a liquid phase hydration method and a water dissolution method.
The liquid phase hydration method is to add light soda ash into soda ash solution for re-dissolution and crystallization, and the key point of the method is mainly on crystallization, thickening and separation, and the prepared soda ash is the grade of heavy soda ash, which is the main method for producing heavy soda ash in the factory at present. The production device of the traditional heavy soda ash has the problems that the production process is easy to cause, firstly, because a centrifuge needs to regularly wash the vehicle, a liquid outlet pipeline stops conveying during the vehicle washing process, the blockage is easy to occur, and meanwhile, the crystallization in a crystallizer is unstable; secondly, scar blocks are formed at the dry-wet joint layer when the crystallizer runs for a long time, and liquid outlet pipelines are blocked when the scar blocks are too large, so that production fluctuation is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a preparation device of liquid-phase high-quality dense soda ash, which can continuously, stably and highly produce the liquid-phase high-quality dense soda ash with fast crystallization, uniform crystallization particles and low cost, aiming at the defects of the prior equipment.
In order to solve the technical problem, the utility model comprises a crystallizer, a thickening pump, a suspension separator, a centrifuge, a calciner, a mother liquor barrel and a mother liquor pump, and is structurally characterized in that the crystallizer is connected with the thickening pump through a crystallization liquor pipeline, the crystallization liquor pipeline behind the thickening pump is connected with a breaking filter through a post-pump crystallization liquor pipeline, and a reflux crystallization liquor pipeline is arranged between the post-pump crystallization liquor pipeline and a liquid inlet of the crystallizer; the breaking filter is connected with a suspension separator through a breaking crystallization liquid pipeline, and the suspension separator is connected with a centrifuge through a thickening crystallization liquid pipeline; the separated clear liquid of the suspension separator is connected to a mother liquid barrel through a clear liquid separating pipeline, and the centrifugal mother liquid of the centrifuge is connected to the mother liquid barrel through a centrifugal mother liquid pipeline; the mother liquor barrel is connected to a crystallizer alkali liquor port through a clear mother liquor pipeline, and a mother liquor pump is arranged on the clear mother liquor pipeline; and feeding the caustic soda water generated by the centrifugal machine into the calcining furnace by using conveying equipment.
The crystallizer is in a barrel-type sectional type or a slurry sheet and guide barrel form.
The filter comprises a cylinder, wherein a liquid inlet is arranged at the upper part of the cylinder and is arranged along the tangential direction of the inner wall of the cylinder, a detachable punching filtering sieve plate is arranged at the middle part in the cylinder, an openable top cover is arranged at the top of the cylinder, and a liquid outlet is arranged at the lower part of the cylinder.
The inner wall of the cylinder body is provided with a sieve plate supporting body, sieve plate pressing lugs corresponding to the sieve plate supporting body are arranged on the inner wall of the cylinder body above the sieve plate supporting body at intervals, the punching filter sieve plate is arranged between the sieve plate supporting body and the sieve plate pressing lugs, and sieve plate pressing bolts are arranged on the sieve plate pressing lugs.
Openings matched with the number and positions of the sieve plate pressing lugs are arranged on the edges of the breaking and filtering sieve plates.
The sieve plate support body is an annular body.
And a washing water inlet is formed in the middle of the top cover.
The top of the cylinder body is provided with a flange, and the top cover is a flange blind plate.
The lower part of the cylinder body is a cone, and the liquid outlet is arranged at the bottom end of the cone.
The mother liquid barrel is an inner coil heat exchange type storage barrel, an outer jacket heat exchange type storage barrel or a non-heat exchange type storage barrel; a stirrer is arranged in the mother liquid barrel.
By adopting the structure, the utility model can solve the problems that seed crystals are slow to generate, individual oversized crystal blocks in the crystallizer block the system, and the total amount of the crystallization liquid is large, which easily causes overload and vibration of the centrifugal machine, thereby achieving the purposes of continuously stabilizing high yield, improving the product quality, and reducing the labor intensity and labor cost.
Drawings
The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of one embodiment of a burst filter;
FIG. 3 is a schematic diagram of another embodiment of a burst filter;
FIG. 4 is a schematic view of the structure A-A of FIG. 3;
fig. 5 is a schematic structural view of a punching filtering sieve plate.
Detailed Description
Referring to the attached drawing, the preparation device of the liquid-phase high-quality heavy soda ash comprises a crystallizer, a thickening pump, a suspension separator, a centrifuge, a calcining furnace, a mother liquor barrel and a mother liquor pump. The crystallizer is provided with a feed inlet, a discharge outlet, a liquid inlet and an alkali liquid port, the feed inlet is connected with a light soda pipeline, the discharge outlet is connected with a thickening pump through a crystallization liquid pipeline, the crystallization liquid pipeline after the thickening pump is connected with a breaking filter, a reflux crystallization liquid pipeline is arranged between the crystallization liquid pipeline after the pump and the liquid inlet of the crystallizer, and an adjusting valve connected with the reflux crystallization liquid pipeline is arranged on the crystallization liquid pipeline after the pump; the breaking filter is connected to the suspension separator through a breaking crystallization liquid pipeline, and the suspension separator is connected to the centrifuge through a thickening crystallization liquid pipeline. The separated clear liquid generated by the suspension separator is connected to the mother liquid barrel through a separated clear liquid pipeline, and the centrifugal mother liquid generated by the centrifugal machine is connected to the mother liquid barrel through a centrifugal mother liquid pipeline; the mother liquor barrel is connected to an alkali liquor port of the crystallizer through a clear mother liquor pipeline, a mother liquor pump is arranged on the clear mother liquor pipeline, a reflux crystallization liquor pipeline is arranged behind the thickening pump to return the reflux crystallization liquor to the crystallizer, and the crystallization stability in the crystallizer can be kept while the seed preparation time in the crystallizer is shortened; the breaking filter can break the crystal blocks with the diameter of more than 20mm, the crystal blocks enter a suspension separator for suspension separation, separated clear liquid returns to a crystallizer through a mother liquid barrel and a mother liquid pump, thickened crystal liquid enters a centrifuge for further separation, centrifugal mother liquid returns to the crystallizer through the mother liquid barrel and the mother liquid pump, monohydrate caustic soda generated by the centrifuge is sent to a calcining furnace through conveying equipment, and a high-quality heavy caustic soda product is obtained after calcination.
The utility model uses stainless steel as the material in the production process of high-quality heavy soda ash, and 304, 316L and duplex stainless steel can be selected due to the manufacturing cost. In the apparatus of the present invention: the crystallizer is a key liquid phase production device for integrating decomposition, crystallization and heat exchange, can be in a barrel sectional type or a slurry sheet and guide barrel type, and utilizes the rotation of the slurry sheet to enable liquid at the upper section and the lower section to be back-mixed, so that the purposes of upper section decomposition and lower section crystallization are achieved, and meanwhile, the sufficient heat exchange effect is increased. The development of the crystallizer mainly aims to design the energy production by balancing decomposition, crystallization and heat exchange according to the rotating speed of a ratio of a size partition surrounding a cylinder body and a pulp adding sheet. The crystallizer comprises a heat exchange type of I type inner guide barrel reverse flow outer barrel with jacket, a heat exchange type of II type inner guide barrel reverse flow outer subsection jacket, and an inner coil type of III type inner guide barrel reverse flow outer jacket. The mother liquor barrel is used for storing mother liquor, crystallizer cleaning liquid and centrifuge cleaning liquid. In order to prevent the mother liquor from crystallizing (the mother liquor contains particle crystals) in the cooling process and prevent the production fluctuation caused by barrel crystallization, a stirrer is arranged in the mother liquor barrel, and the stirring is mainly of a frame structure. The stirring can be divided into angle steel forming and pipe forming, and the connection mostly adopts a fixture installation mode and a small-sized welding installation mode. In order to balance production, an inner coil heat exchange type storage barrel, an outer jacket heat exchange type storage barrel or a non-heat exchange type storage barrel can be selected according to local climate. The liquid phase production mainly takes a spiral screen scraper type centrifuge as a main part and is key equipment for solid-liquid separation and soda water moisture control in liquid phase production, the centrifuge comprises the spiral screen scraper type centrifuge, crystals are separated from crystallization liquid by utilizing high-speed centrifugal force, centrifugal mother liquor enters a mother liquor barrel for storage and then is sent into a crystallizer through a mother liquor pump for recrystallization, and soda water enters a calcinator and is heated and decomposed by steam to prepare qualified heavy soda. The mother liquor pump is a temperature-resistant 316L, two-phase stainless steel chemical pump or a slurry pump. The equipment, the thickening pump, the suspension separator and the calcining furnace are universal equipment.
The breaking and filtering device shown in fig. 2-5 comprises a cylinder 1, wherein a liquid inlet 3 is arranged on the upper part of the cylinder 1, in order to make the crystallization-containing liquid flow in a rotating manner, the liquid inlet 3 is arranged along the tangential direction of the inner wall of the cylinder 1, and a liquid inlet valve is arranged on the liquid inlet 3. The middle part in the cylinder body 1 is provided with a detachable punching filtering sieve plate 2, the punching filtering sieve plate 2 is arranged in a horizontal direction approximately, the inner wall of the cylinder body 1 is provided with a sieve plate support body 8, the sieve plate support body 8 can be a supporting block arranged at intervals or an annular body, the inner wall of the cylinder body 1 above the sieve plate support body 8 is provided with sieve plate pressing lugs 9 corresponding to the sieve plate support body 8 at intervals, the distance between the upper part and the lower part of the sieve plate support body 8 and the sieve plate pressing lugs 9 is larger than the thickness of the punching filtering sieve plate 2, the sieve plate pressing lugs 9 are provided with sieve plate pressing bolts 10, the edge of the punching filtering sieve plate 2 is provided with openings matched with the sieve plate pressing lugs 9 in quantity and position, thereby being convenient for the installation and the replacement of the punching filtering sieve plate 2, after the punching filtering sieve plate 2 is placed on the sieve plate supporting body 8, the opening on the edge of the punching filtering sieve plate 2 is adjusted to correspond to the sieve plate pressing lug 9, and then the sieve plate pressing bolt 10 is pressed and fixed. The lower part of the barrel body 1 is provided with a liquid outlet 4, the top of the barrel body 1 is provided with an openable top cover 7, the filtering sieve plate 2 is convenient to install and replace, the middle part of the top cover 7 is provided with a flushing water inlet 5, a flushing water valve is arranged on the flushing water inlet 5, and the filtering device is flushed when downstream equipment is periodically overhauled. In this embodiment, be equipped with rectangular hole on broken and dash filtering screen plate 2, for guaranteeing the sieve intensity, the rectangular hole of same radial direction is discontinuous, and parallel adjacent rectangular hole interval sets up, and the length, the width in rectangular hole are according to production capacity, broken effect, product quality adjustment, and the percent opening of broken and dashing filtering screen plate 2 is in order to adapt to the principle that downstream crystallization thickening separator requires the granularity of crystal block, prevents thickening separator piping system from blockking up.
Referring to fig. 2, the lower part of the cylinder 1 is a cone, and the liquid outlet 4 is arranged at the bottom end of the cone and is arranged in a downward direction. Referring to fig. 3, the bottom of the cylinder 1 is flat-bottomed, and the liquid outlet 4 is located on the side surface of the cylinder 1. During actual manufacturing, the top of the cylinder 1 can be further provided with a flange 6, the flange 6 is provided with a flange blind plate corresponding to the flange 6, the flushing water inlet 5 is arranged in the middle of the flange blind plate, and the flange blind plate is the top cover 7. Of course, the burst filter device may have other known configurations.
When the device is used, the liquid containing the crystals enters along the tangent line of the cylinder 1, the liquid containing the crystals can flow in a rotating mode, when the liquid passes through the breaking and flushing filter sieve plate 2, large crystals cannot pass through but continue to rotate and break in the cylinder, and when the crystals become small, the large crystals pass through the breaking and flushing filter sieve plate 2.
The working process of the utility model is as follows: when the device works, light soda enters a crystallizer through a feed inlet at the top of the crystallizer under the control of speed regulation, and is subjected to a reaction of decomposition and crystallization with clear mother liquor to obtain a crystallization liquid, the crystallization liquid enters a thickening pump through a crystallization liquid pipeline through a discharge outlet at the bottom side of the crystallizer, a part of the crystallization liquid is fed into a liquid inlet of a breaking filter through a crystallization liquid pipeline after the pump to break and break large crystal blocks/bodies, prevent flow blockage and improve the quality of a finished product, the other part of the crystallization liquid reflows into the crystallizer through a reflowing crystallization liquid pipeline after being controlled and adjusted by a valve, the reflowing is to increase seed crystals to improve crystallization and stabilize production, the broken and filtered crystallization liquid enters a liquid inlet of a suspension separator through the breaking and crystallizing liquid pipeline through a liquid outlet of the broken and filtered crystallization liquid, the thickened liquid is separated from the clear mother liquor by centrifugal force, and the clear mother liquor reflows into a mother liquor barrel through a clear liquid pipeline at the upper part of the liquid outlet of the suspension separator, the thickening liquid enters a liquid inlet of a centrifuge through a thickening crystallization liquid pipeline from a liquid outlet at the bottom, solid-liquid separation is carried out through high-speed rotation of the centrifuge, centrifugal mother liquid enters a mother liquid barrel through a centrifugal mother liquid outlet pipeline, the centrifugal mother liquid is conveyed to an alkali liquid port at the upper part of the crystallizer through a clear mother liquid pipeline by a mother liquid pump to enter the crystallizer for secondary crystallization, and soda water separated by the centrifuge is conveyed to a steam calcining furnace through a soda water discharge port to be calcined to obtain qualified heavy soda.
Claims (10)
1. A preparation device of liquid-phase high-quality heavy soda ash comprises a crystallizer, a thickening pump, a suspension separator, a centrifuge, a calcining furnace, a mother liquor barrel and a mother liquor pump, and is characterized in that the crystallizer is connected with the thickening pump through a crystallization liquor pipeline, a post-pump crystallization liquor pipeline is connected with a breaking filter behind the thickening pump, and a reflux crystallization liquor pipeline is arranged between the post-pump crystallization liquor pipeline and a liquid inlet of the crystallizer; the breaking filter is connected with a suspension separator through a breaking crystallization liquid pipeline, and the suspension separator is connected with a centrifuge through a thickening crystallization liquid pipeline; the separated clear liquid of the suspension separator is connected to a mother liquid barrel through a clear liquid separating pipeline, and the centrifugal mother liquid of the centrifuge is connected to the mother liquid barrel through a centrifugal mother liquid pipeline; the mother liquor barrel is connected to a crystallizer alkali liquor port through a clear mother liquor pipeline, and a mother liquor pump is arranged on the clear mother liquor pipeline; and (3) feeding the soda water generated by the centrifuge into the calcining furnace by a conveying device.
2. The apparatus for preparing high quality soda ash with heavy liquid phase according to claim 1, wherein said crystallizer is in the form of barrel type segment or slurry tablet feeding barrel.
3. The apparatus for preparing liquid-phase high-quality soda ash heavy according to claim 1, wherein the impact filter comprises a cylinder (1), a liquid inlet (3) is arranged at the upper part of the cylinder (1), the liquid inlet (3) is arranged along the tangential direction of the inner wall of the cylinder (1), a detachable impact filtering sieve plate (2) is arranged at the middle part in the cylinder (1), an openable top cover (7) is arranged at the top of the cylinder (1), and a liquid outlet (4) is arranged at the lower part of the cylinder (1).
4. The apparatus for preparing high quality soda ash with heavy liquid phase according to claim 3, wherein the inner wall of the cylinder (1) is provided with a sieve plate support body (8), the inner wall of the cylinder (1) above the sieve plate support body (8) is provided with sieve plate pressure lugs (9) corresponding to the sieve plate support body (8) at intervals, the impact filtering sieve plate (2) is arranged between the sieve plate support body (8) and the sieve plate pressure lugs (9), and the sieve plate pressure lugs (9) are provided with sieve plate pressure bolts (10).
5. The apparatus for preparing high quality soda ash with heavy liquid phase as claimed in claim 4, wherein the edge of the impact filtering sieve plate (2) is provided with openings matching with the number and position of the sieve plate pressing lugs (9).
6. The apparatus for preparing high-quality soda ash with heavy liquid phase according to claim 4, wherein said sieve plate support body (8) is an annular body.
7. The apparatus for preparing high quality soda ash with liquid phase according to claim 3, characterized in that the top cover (7) is provided with a rinsing water inlet (5) at the middle part.
8. The apparatus for preparing liquid phase high quality soda ash heavy according to claim 3, characterized in that the top of the cylinder (1) is provided with a flange (6), and the top cover (7) is a flange blind plate.
9. The apparatus for preparing liquid phase high quality soda ash heavy according to any of claims 3 to 8, characterized in that the lower part of the cylinder (1) is a cone, and the liquid outlet (4) is arranged at the bottom end of the cone.
10. The apparatus for preparing liquid-phase high-quality soda ash heavy according to claim 1, wherein the mother liquor drum is an inner coil heat exchange type drum, an outer jacket heat exchange type drum or a non-heat exchange type drum; a stirrer is arranged in the mother liquid barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123161743.1U CN216571633U (en) | 2021-12-16 | 2021-12-16 | Preparation facilities of high-quality heavy soda ash of liquid phase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123161743.1U CN216571633U (en) | 2021-12-16 | 2021-12-16 | Preparation facilities of high-quality heavy soda ash of liquid phase |
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| Publication Number | Publication Date |
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| CN216571633U true CN216571633U (en) | 2022-05-24 |
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| CN202123161743.1U Active CN216571633U (en) | 2021-12-16 | 2021-12-16 | Preparation facilities of high-quality heavy soda ash of liquid phase |
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2021
- 2021-12-16 CN CN202123161743.1U patent/CN216571633U/en active Active
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