CN211496960U - A carbonization device for producing sodium bicarbonate - Google Patents
A carbonization device for producing sodium bicarbonate Download PDFInfo
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- CN211496960U CN211496960U CN201922273814.3U CN201922273814U CN211496960U CN 211496960 U CN211496960 U CN 211496960U CN 201922273814 U CN201922273814 U CN 201922273814U CN 211496960 U CN211496960 U CN 211496960U
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Abstract
The utility model discloses a carbonizing apparatus for producing sodium bicarbonate, it includes carbonization tower and cooling crystallization mechanism, and cooling crystallization mechanism includes crystallization pipe, circulating pump and cooler. The advantages are that: the cooling crystallization mechanism is arranged outside the carbonization tower, so that carbon dioxide compressed gas and raw materials are added outside the carbonization tower, namely three processes of mass transfer, crystallization and heat transfer are mainly completed in the cooling crystallization mechanism, and the online cleaning and production of a plurality of groups of cooling crystallization mechanisms can be realized by switching the first control valve and the second control valve, so that the problems of scabbing and blocking of the carbonization tower can be effectively solved, the period of tower pouring and tower washing is prolonged, the material returning frequency of the tower pouring is effectively reduced, the production stability of a system is ensured, and the production cost is reduced; the carbon dioxide compressed gas realizes uniform gas distribution through the distributor, can ensure that the gas is fully mixed with the raw materials, is favorable for the growth of crystals, and the mixed liquid is circularly treated by the cooling and crystallizing mechanism, so that crystals are gathered and grown at the bottom of the carbonization tower, and the granularity of products can be improved.
Description
The technical field is as follows:
the utility model relates to a sodium bicarbonate production technical field, specifically speaking relate to a carbonizing apparatus for producing sodium bicarbonate
Background art:
refined sodium bicarbonate is commercially called baking soda as an important alkali product and is widely applied to the industries of food, medicine and the like. The carbonating tower is the main equipment for producing sodium bicarbonate, and the carbonating tower for producing sodium bicarbonate by the conventional carbonating method uses a carbonating tower with an internal or external cooler, carbon dioxide compressed gas and raw materials (containing Na)2CO3、NaHCO3NaCl) is simultaneously fed into the carbonization tower, three processes of mass transfer, crystallization and heat transfer are simultaneously carried out in the carbonization tower, and the reaction heat passes through the carbonization towerA cooler is provided internally or externally. Because the three processes of mass transfer, crystallization and heat transfer are carried out in the carbonization tower at the same time, crystals crystallized by the carbonization tower are easy to attach to the inner wall of the carbonization tower, have serious scabbing, and are easy to block pipelines after falling off, thereby affecting the product quality and the production stability; most enterprises for producing sodium bicarbonate adopt three towers in one group for production operation, two towers are used for production and one tower is cleaned for standby, and the tower cleaning is basically carried out for 6-8 hours. However, frequent tower inversion and tower washing cause fluctuation to the stable operation and process indexes of the production system, which causes instability of the production system and brings a lot of adverse effects to the production of sodium bicarbonate.
The utility model has the following contents:
an object of the utility model is to provide a carbonizing apparatus for producing sodium bicarbonate, production is stable.
The utility model discloses by following technical scheme implement: a carbonization device for producing sodium bicarbonate comprises a carbonization tower and a cooling crystallization mechanism, wherein at least two pairs of supernatant liquid discharge ports and mixed liquid inlet ports which are arranged up and down are arranged in the middle of a main body of the carbonization tower along the circumferential direction, and one cooling crystallization mechanism is connected between each pair of the supernatant liquid discharge ports and the mixed liquid inlet ports; the cooling crystallization mechanism comprises a crystallization pipe, a circulating pump and a cooler, wherein a three-way valve is communicated with the side part of an inlet of the crystallization pipe, a plurality of gas distributors are arranged in the middle of the crystallization pipe, and gas outlet pipes of the gas distributors are communicated with the interior of the crystallization pipe; the inlet of crystallization pipe with the supernatant discharge port is connected through first control valve, the export of crystallization pipe with the import intercommunication of circulating pump, the export of circulating pump with the import intercommunication of cooler, the export of cooler pass through the second control valve with mix liquid import intercommunication the intercommunication on the pipeline of the exit end of cooler has the washing export wash the export facial make-up and be equipped with the washing control valve.
Further, the gas distributor comprises an annular main pipeline horizontally sleeved outside the crystallization pipe and a plurality of gas outlet pipes communicated between the bottom of the annular main pipeline and the crystallization pipe; an air inlet is communicated with the annular main pipeline.
Furthermore, the air outlet pipe is arranged from the air inlet end to the air outlet end in an inclined manner from top to bottom.
Further, the inclination angle alpha of the air outlet pipe is 30-60 degrees.
Further, the carbonization tower comprises a carbonization tower main body, a material collecting hopper and a flow guide pipe, wherein the material collecting hopper is fixed inside the upper part of the carbonization tower main body, the flow guide pipe is communicated below the material collecting hopper, and the bottom of the flow guide pipe extends to the inner bottom of the carbonization tower main body; the supernatant liquid discharge port and the mixed liquid inlet are respectively communicated with the carbonization tower main body below and above the collecting hopper, the top of the carbonization tower main body is communicated with an exhaust pipe, and an exhaust control valve is arranged on the exhaust pipe; the bottom of the carbonization tower main body is communicated with a discharge opening, and a discharge control valve is arranged on the discharge opening.
Furthermore, a material distribution cone is fixed at the inner bottom of the carbonization tower main body, and the center line of the material distribution cone is superposed with the center line of the flow guide pipe.
Further, a balance pipe is communicated between the top of the carbonization tower main body and the carbonization tower main body below the collecting hopper.
Further, a balance pipe is communicated between the top of the carbonization tower main body and the carbonization tower main body below the collecting hopper.
Furthermore, a horn-shaped discharge hole is fixed at the bottom of the flow guide pipe.
The utility model has the advantages that: the cooling crystallization mechanism is arranged outside the carbonization tower, so that carbon dioxide compressed gas and raw materials are added outside the carbonization tower, namely three processes of mass transfer, crystallization and heat transfer are mainly completed in the cooling crystallization mechanism, and the online cleaning and production of a plurality of groups of cooling crystallization mechanisms can be realized by switching the first control valve and the second control valve, so that the problems of scabbing and blocking of the carbonization tower can be effectively solved, the periods of tower reversing and tower washing are prolonged, the material returning frequency of the tower reversing is effectively reduced, the production stability of a system is ensured, and the production cost is reduced; the carbon dioxide compressed gas realizes uniform gas distribution through the distributor, can ensure that the gas is fully mixed with the raw materials, is favorable for the growth of crystals, and the mixed liquid is circularly treated by the cooling and crystallizing mechanism, so that crystals are gathered and grown at the bottom of the carbonization tower, and the granularity of products can be improved.
Description of the drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a top view of fig. 1.
The device comprises a carbonization tower 1, a supernatant liquid discharge port 1.1, a mixed liquid inlet 1.2, a carbonization tower main body 1.3, a collecting hopper 1.4, a guide pipe 1.5, an exhaust pipe 1.6, an exhaust control valve 1.7, a discharge port 1.8, a discharge control valve 1.9, a material distribution cone 1.10, a balance pipe 1.11, a horn-shaped discharge port 1.12, a cooling crystallization mechanism 2, a crystallization pipe 2.1, a circulating pump 2.2, a cooler 2.3, a first control valve 2.4, a second control valve 2.5, a three-way valve 2.6, a gas distributor 2.7, an exhaust pipe 2.7.1, an annular main pipe 2.7.2, a gas inlet 2.7.3, a cleaning outlet 2.8 and a cleaning control valve 2.9.
The specific implementation mode is as follows:
in the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and fig. 2, a carbonization device for producing sodium bicarbonate comprises a carbonization tower 1 and a cooling crystallization mechanism 2, wherein the carbonization tower 1 comprises a carbonization tower main body 1.3, a collecting hopper 1.4 and a guide pipe 1.5, the top of the carbonization tower main body 1.3 is communicated with an exhaust pipe 1.6, and the exhaust pipe 1.6 is provided with an exhaust control valve 1.7; the bottom of the main body 1.3 of the carbonization tower is communicated with a discharge opening 1.8, and a discharge control valve 1.9 is arranged on the discharge opening 1.8; a material collecting hopper 1.4 is fixed in the upper part of the carbonization tower main body 1.3, a balance pipe 1.11 is communicated between the top of the carbonization tower main body 1.3 and the carbonization tower main body 1.3 below the material collecting hopper 1.4, and the balance pipe 1.11 can balance the pressure above and below the material collecting hopper 1.4; a guide pipe 1.5 is communicated below the aggregate bin 1.4, and the bottom of the guide pipe 1.5 extends to the inner bottom of the carbonization tower main body 1.3; the interior of the main body 1.3 of the carbonization tower above the collecting hopper 1.4 is a mixed liquid entering area A, the interior of the main body 1.3 of the carbonization tower below the draft tube 1.5 is a crystal sedimentation long area B, and a clear liquid area C is formed below the collecting hopper 1.4 and outside the draft tube 1.5;
at least two pairs of supernatant discharge ports 1.1 and mixed liquid inlets 1.2 which are arranged up and down are arranged in the middle of the carbonization tower main body 1.3 along the circumferential direction, the supernatant discharge ports 1.1 and the mixed liquid inlets 1.2 are respectively communicated with the carbonization tower main body 1.3 below and above the material collecting hopper 1.4, the mixed material enters the carbonization tower 1 through the mixed liquid inlets 1.2, then enters the lower part of the carbonization tower 1 through the material collecting hopper 1.4 and the guide pipe 1.5, then is crystallized and settled at the bottom of the carbonization tower 1, and the clear liquid enters the cooling crystallization mechanism 2 through the supernatant discharge ports 1.1; in the embodiment, the inner bottom of the carbonization tower main body 1.3 is a spherical bottom surface, a horn-shaped discharge hole 1.12 is fixed at the bottom of the draft tube 1.5, a material dividing cone 1.10 is fixed at the inner bottom of the carbonization tower main body 1.3, and the central line of the material dividing cone 1.10 is superposed with the central line of the draft tube 1.5; the mixture falling down through the flow guide pipe 1.5 is expanded through the horn-shaped discharge hole 1.12 and then falls down, and then is uniformly diffused into the spherical bottom surface after being distributed through the distribution cone 1.10, so that the mixture is uniformly dispersed;
a cooling crystallization mechanism 2 is connected between each pair of supernatant liquid discharge ports 1.1 and mixed liquid inlet 1.2; in the embodiment, 3 cooling crystallization mechanisms 2 are arranged, wherein two mechanisms work for standby, so that online cleaning is realized;
the cooling crystallization mechanism 2 comprises a crystallization pipe 2.1, a circulating pump 2.2 and a cooler 2.3, wherein the inlet of the crystallization pipe 2.1 is connected with a supernatant liquid discharge port 1.1 through a first control valve 2.4, the outlet of the crystallization pipe 2.1 is communicated with the inlet of the circulating pump 2.2, the outlet of the circulating pump 2.2 is communicated with the inlet of the cooler 2.3, and the outlet of the cooler 2.3 is communicated with a mixed liquid inlet 1.2 through a second control valve 2.5; a pipeline at the outlet end of the cooler 2.3 is communicated with a cleaning outlet 2.8, and a cleaning control valve 2.9 is arranged on the cleaning outlet 2.8;
the on-off of the cooling crystallization mechanism 2 can be controlled by opening and closing the first control valve 2.4 and the second control valve 2.5, so that the cooling crystallization mechanism 2 can be switched on line, and the cleaning is convenient; a three-way valve 2.6 is communicated with the side part of the inlet of the crystallization tube 2.1, one inlet of the three-way valve 2.6 is a raw material inlet and is used for being communicated with the raw material, and the other inlet of the three-way valve 2.6 is a cleaning liquid inlet and is used for being communicated with the cleaning liquid; the middle part of the crystallization tube 2.1 is provided with a plurality of gas distributors 2.7, gas outlet pipes 2.7.1 of the gas distributors 2.7 are communicated with the inside of the crystallization tube 2.1, and raw materials and carbon dioxide compressed gas are respectively sent into the crystallization tube 2.1 through a three-way valve 2.6 and the gas distributors 2.7.
Raw materials (containing Na2CO3, NaHCO3 and NaCl) enter a crystallization tube 2.1 through a raw material inlet of a three-way valve 2.6, carbon dioxide compressed gas enters the crystallization tube 2.1 through a gas distributor 2.7, part of sodium carbonate and sodium chloride in the raw materials react with the carbon dioxide to generate a mixture of sodium bicarbonate, gas, liquid and solid, then the mixture is pumped into a cooler 2.3 through a circulating pump 2.2, a large amount of reaction crystallization is completed in the cooler 2.3, the generated reaction heat is taken away by circulating water of the cooler 2.3, a mixed solution in the cooler 2.3 enters a mixed solution entering area A at the upper part of a carbonization tower 1 through a mixed solution inlet 1.2 and then enters the lower part of a carbonization tower main body 1.3 through a guide pipe 1.5, sodium bicarbonate crystals grow at the bottom of the carbonization tower main body 1.3 and settle downwards to a crystallization settling large area B, and clear solution floats upwards to a clear solution area C; clear liquid enters the crystallization pipe 2.1 through a clear liquid discharge port 1.1, is brought into the crystallization pipe 2.1 by a circulating pump 2.2, continues to circularly participate in the reaction through a cooler 2.3, and crystals at the bottom of the main body 1.3 of the carbonization tower are discharged through a discharge port 1.8. When the cooling crystallization mechanism 2 needs to be cleaned, the corresponding first control valve 2.4 and the second control valve 2.5 are closed, the three-way valve 2.6 is switched to the cleaning liquid inlet to be communicated with the crystallization pipe 2.1, the cleaning control valve 2.9 is opened, the cleaning liquid is introduced to the cooling mechanism 2 to be cleaned, the cleaning control valve 2.9 is closed after the cleaning is finished, and the three-way valve 2.6 is switched to the raw material inlet to be communicated with the crystallization pipe 2.1 for standby.
In the embodiment, the crystallization device comprises three gas distributors 2.7, wherein each gas distributor 2.7 comprises an annular main pipeline 2.7.2 horizontally sleeved outside a crystallization pipe 2.1 and a plurality of gas outlet pipes 2.7.1 communicated between the bottom of the annular main pipeline 2.7.2 and the crystallization pipe 2.1; an air inlet 2.7.3 is communicated with the annular main pipe 2.7.2; carbon dioxide compressed gas enters the annular main pipeline 2.7.2 through the gas inlet 2.7.3 and then is discharged through each gas outlet pipe 2.7.1; the air outlet pipe 2.7.1 is obliquely arranged from the air inlet end to the air outlet end from top to bottom, the inclination angle alpha of the air outlet pipe 2.7.1 is 30-60 degrees, and alpha is 45 degrees in the embodiment; carbon dioxide gas enters the interior of the crystallization tube 2.1 through the inclined outlet tube 2.7.1, the gas distribution is uniform, the mixing effect of gas and liquid can be enhanced, the premixing effect is enhanced, meanwhile, the inclined outlet tube 2.7.1 is arranged to wash the mixture in the crystallization tube 2.1, and the blockage of the crystallization tube 2.1 can be avoided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The carbonization device for producing the sodium bicarbonate is characterized by comprising a carbonization tower and a cooling crystallization mechanism, wherein at least two pairs of supernatant liquid discharge ports and mixed liquid inlets which are arranged up and down are arranged in the middle of a main body of the carbonization tower along the circumferential direction, and one cooling crystallization mechanism is connected between each pair of the supernatant liquid discharge ports and the mixed liquid inlets;
the cooling crystallization mechanism comprises a crystallization pipe, a circulating pump and a cooler, wherein a three-way valve is communicated with the side part of an inlet of the crystallization pipe, a plurality of gas distributors are arranged in the middle of the crystallization pipe, and gas outlet pipes of the gas distributors are communicated with the interior of the crystallization pipe; the inlet of crystallization pipe with the supernatant discharge port is connected through first control valve, the export of crystallization pipe with the import intercommunication of circulating pump, the export of circulating pump with the import intercommunication of cooler, the export of cooler pass through the second control valve with mix liquid import intercommunication the intercommunication on the pipeline of the exit end of cooler has the washing export wash the export facial make-up and be equipped with the washing control valve.
2. The carbonizing apparatus for producing sodium bicarbonate according to claim 1, wherein the gas distributor includes an annular main pipe horizontally sleeved outside the crystallizing pipe, and a plurality of gas outlet pipes communicated between the bottom of the annular main pipe and the crystallizing pipe; an air inlet is communicated with the annular main pipeline.
3. The carbonizing apparatus for producing sodium bicarbonate of claim 2, wherein the gas outlet pipe is inclined from the gas inlet end to the gas outlet end from top to bottom.
4. Carbonization device for the production of sodium bicarbonate according to claim 3, characterized in that the angle of inclination α of the outlet duct is comprised between 30 ° and 60 °.
5. The carbonizing apparatus for producing sodium bicarbonate according to any one of claims 1 to 4, wherein the carbonizing tower includes the carbonizing tower main body, a collecting hopper, and a guide pipe, the collecting hopper is fixed inside an upper portion of the carbonizing tower main body, the guide pipe is communicated below the collecting hopper, and a bottom of the guide pipe extends to an inner bottom of the carbonizing tower main body; the supernatant liquid discharge port and the mixed liquid inlet are respectively communicated with the carbonization tower main body below and above the collecting hopper, the top of the carbonization tower main body is communicated with an exhaust pipe, and an exhaust control valve is arranged on the exhaust pipe; the bottom of the carbonization tower main body is communicated with a discharge opening, and a discharge control valve is arranged on the discharge opening.
6. The carbonizing apparatus for producing sodium bicarbonate according to claim 5, wherein a material dividing cone is fixed to an inner bottom of the carbonizing tower main body, and a center line of the material dividing cone coincides with a center line of the draft tube.
7. Carbonization device for the production of sodium bicarbonate according to claim 5, characterized in that a balancing pipe is connected between the top of the carbonization tower body and the carbonization tower body below the collection hopper.
8. Carbonization device for the production of sodium bicarbonate according to claim 6, characterized in that a balancing pipe is connected between the top of the carbonization tower body and the carbonization tower body below the collection hopper.
9. The carbonizing apparatus for producing sodium bicarbonate of claim 5, wherein a trumpet-shaped discharge port is fixed at the bottom of the draft tube.
10. The carbonizing apparatus for producing sodium bicarbonate according to any one of claims 6 to 8, wherein a trumpet-shaped discharge port is fixed at the bottom of the draft tube.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922273814.3U CN211496960U (en) | 2019-12-17 | 2019-12-17 | A carbonization device for producing sodium bicarbonate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922273814.3U CN211496960U (en) | 2019-12-17 | 2019-12-17 | A carbonization device for producing sodium bicarbonate |
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| CN211496960U true CN211496960U (en) | 2020-09-15 |
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| CN201922273814.3U Active CN211496960U (en) | 2019-12-17 | 2019-12-17 | A carbonization device for producing sodium bicarbonate |
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