CN114505023B - Novel continuous melting material melting equipment - Google Patents

Novel continuous melting material melting equipment Download PDF

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Publication number
CN114505023B
CN114505023B CN202210138580.5A CN202210138580A CN114505023B CN 114505023 B CN114505023 B CN 114505023B CN 202210138580 A CN202210138580 A CN 202210138580A CN 114505023 B CN114505023 B CN 114505023B
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sieve plate
kettle body
melting
pipe
connecting pipe
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CN114505023A (en
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何大江
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Shaxian Senming Industry And Trade Co ltd
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Shaxian Senming Industry And Trade Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/0013—Controlling the temperature of the process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053—Details of the reactor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/1862—Stationary reactors having moving elements inside placed in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/02—Feed or outlet devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/04—Pressure vessels, e.g. autoclaves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
    • B01J4/005—Feed or outlet devices as such, e.g. feeding tubes provided with baffles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/008—Feed or outlet control devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
    • B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
    • B01J2204/005—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the outlet side being of particular interest
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00002—Chemical plants
    • B01J2219/00004—Scale aspects
    • B01J2219/00006—Large-scale industrial plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00002—Chemical plants
    • B01J2219/00027—Process aspects
    • B01J2219/0004—Processes in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00121—Controlling the temperature by direct heating or cooling
    • B01J2219/00123—Controlling the temperature by direct heating or cooling adding a temperature modifying medium to the reactants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to the technical field of chemical equipment, in particular to novel continuous melting material melting equipment, wherein an inner cavity of a reaction kettle body is divided into a plurality of layers of spaces by a first sieve plate, a second sieve plate and a third sieve plate, the aperture of each layer of sieve plate is gradually reduced from top to bottom, and when materials enter the reaction kettle body, the materials fall on the first sieve plate in the kettle. Under the action of high temperature and high pressure, the solid water glass is dissolved into liquid water glass, the volume of the solid water glass is gradually reduced, and when the solid water glass is smaller than the aperture of the first sieve plate, the solid water glass falls into the next layer and continuously reacts with the liquid in the kettle. The second sieve plate falls to the next layer in the same way, the third sieve plate falls to the lower layer in the same way, and the stirring rod of the scraping device at the bottom of the kettle always keeps rotating until all the liquid water glass is completely dissolved and then falls to the bottom of the kettle, so that the material at the bottom can be kept in a flowing state, and meanwhile, upward flowing direction is generated. Through the improvement of the melting material melting machine equipment, steam can be saved, material blocking can be avoided, and the service life of the equipment is prolonged.

Description

Novel continuous melting material melting equipment
Technical Field
The invention relates to the technical field of chemical equipment, in particular to novel continuous melting material equipment.
Background
Silicon exists in nature mainly in the state of silicon dioxide and silicate, all plants contain a small amount of silicon dioxide, and the connective tissue in animals also contains silicon dioxide. The silicon content in the crust was absolutely abundant, with the weight percentage of silicon in the crust being 27.6%, next to oxygen (47.2%) being the second position. Inorganic silicon compounds have evolved faster in the eighties as a series of inorganic chemicals, especially in the last few years. The patent abstract amount of silicon compounds is an absolute advantage in the class of inorganic chemicals of the Dewent center patent index. From this, it can be seen that inorganic silicon compounds are clearly competitive among many inorganic chemicals.
In recent years, new types of silicon compounds have not increased much in the world, and development of applications for inorganic silicon compounds has been emphasized. For example, the oldest sodium silicate in silicon compounds is also currently being developed to have high performance and high added value; the American Mo Bier company develops various specifications for ZSM zeolite and can be almost used for various catalytic processes of petrochemical industry; silicon nitride ceramic engines are being put into practical use. Therefore, from the current development trend, inorganic silicon compounds will be largely introduced into many fields of light industry, food, medicine, construction, electronics, metallurgy, mechanical industry and the like, and have great development prospects.
White carbon black is an older variety of silicon compounds, and the thirties of China, de, su, america and the like begin to develop, and the silicon compounds enter industrial production from the end of forty years. The method has the advantages of late start in China, few varieties, poor quality, high energy consumption and no serialization. Therefore, the task of developing new products and developing application fields is very difficult. The production method of white carbon black is mainly two types of precipitation method and gas phase method according to domestic and foreign data. The precipitation method has the advantages of cheap and easily available raw materials, simpler production process and equipment and low product selling price, so that the precipitation method is dominant at present.
The precipitation method is also called wet method, and the main raw materials are quartz sand, sodium carbonate, industrial hydrochloric acid or sulfuric acid or nitric acid or carbon dioxide. The process route is basically as follows: firstly, fuel oil or high-quality coal is adopted to react quartz sand with sodium carbonate at high temperature to prepare industrial water glass, the industrial water glass is prepared into dilute solution with certain concentration by water, then certain acid is added under certain condition to precipitate silicon dioxide, and then the product white carbon black is prepared by cleaning, filtering, drying (drying or spraying) and crushing. Precipitation is also divided into many different specific methods such as acid method, sol method, carbonization method, etc.
The quartz sand and sodium carbonate are calcined at high temperature to remove impurities and water-cooled to form industrial water glass, which is one of the main raw materials for manufacturing the precipitated white carbon black. The block-shaped water glass produced by the water glass kiln is melted into liquid water glass by adding water and steam into a static pressure kettle or a melting roller (a melting kettle) and maintaining pressure for use in a subsequent reaction section. The water glass melted by adopting the static pressure kettle has the advantages of good transparency, low steam consumption, low electric energy consumption and the like. However, during the actual use of the static pressure kettle, the water glass contains a certain amount of insoluble substances or steam pressure.
The molten mass with a certain thickness can be generated on the upper part of the grid plate in the use process of the static pressure kettle in low time, and the grid plate is easily blocked by the solid matters, so that melted liquid water glass cannot enter the bottom through the grid plate and is discharged from the discharging pipe, and only after the pressure is relieved through the blow-down pipe, the molten mass on the grid plate can be cleaned again, thereby not only causing steam waste, but also affecting the productivity of equipment. The drum is not provided with a grid plate, but a material turning plate is distributed in the drum, the drum rotates to turn up the material, so that the material is heated and melted fully and uniformly, the defect of the static pressure kettle is avoided, but the excessive electric energy consumption of the drum and the deposition of part of the material in the tank body after discharging are avoided, the steam waste phenomenon is caused in the subsequent cleaning, and the small part of the productivity of the equipment is also influenced.
Both devices have a common problem: before each charging, the pressure and the temperature in the equipment are reduced to be in an operable state, the charging is carried out, and the previous steps are repeated again after the charging: steam is added and the temperature is raised, and the process is repeated, so that a great amount of steam is wasted. Meanwhile, as the temperature is reduced, the discharging and discharging are not clean, part of the bottom material is deposited at the bottom of the equipment, when the equipment is reduced to normal temperature, the accumulated liquid can generate caking due to lower temperature and untimely temperature rise of subsequent feeding and liquid adding, and the productivity of the monomer equipment is reduced over time. When the scale is hit by external force of the air hammer, the scale cannot be completely cleaned, the damage to the material of the equipment body is large, and the service life of the equipment is shortened.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: by improving the melting material machine, steam can be saved, material blocking can be avoided, and the service life of the equipment is prolonged.
In order to solve the technical problems, the invention adopts the following technical scheme:
a novel continuous melting device, comprising:
the material melting kettle body is cylindrical with an axial direction in a vertical direction;
the feeding device is connected to the upper part of the material melting kettle body;
the discharge port is arranged at the bottom of the material melting kettle body;
the first sieve plate is arranged inside the material melting kettle body;
the second sieve plate is arranged inside the material melting kettle body, is positioned below the first sieve plate, and has sieve holes smaller than those of the first sieve plate;
the third sieve plate is arranged in the material melting kettle body, is positioned below the second sieve plate, and has sieve pores smaller than those of the second sieve plate;
the two ends of the first connecting pipe are respectively communicated with the side wall of the chemical material kettle body, the initial end of the first connecting pipe is positioned between the second sieve plate and the first sieve plate, and the tail end of the first connecting pipe is positioned above the first sieve plate;
the first liquid return spray pipe is positioned in the material melting kettle body, is arranged above the first sieve plate and is communicated with the tail end of the first connecting pipe;
the two ends of the second connecting pipe are respectively communicated with the side wall of the material melting kettle body, the initial end of the second connecting pipe is positioned below the third sieve plate, and the tail end of the second connecting pipe is positioned between the first sieve plate and the second sieve plate;
the second liquid return spray pipe is positioned in the material melting kettle body and is arranged between the first sieve plate and the second sieve plate;
scrape material device, scrape material device setting in this internal bottom of material cauldron, scrape material device and include:
the axis of the transmission shaft coincides with the axis of the material melting kettle, the transmission shaft is provided with a hollow first inner cavity, the transmission shaft is connected with a liquid inlet connector and a liquid outlet connector through a rotary connector, and the transmission shaft is connected with a vapor pipe through the rotary connector;
the motor is in transmission connection with the transmission shaft;
the stirring rod is in transmission connection with the transmission shaft, the stirring rod is provided with a second inner cavity communicated with the first inner cavity, and a plurality of through holes are uniformly distributed on the surface of the stirring rod;
scraping blade, scraping blade connects in the puddler.
Further, in the above-mentioned novel continuous melting equipment structure, feeding device includes:
the feeding pipe is coaxially connected to the top of the chemical material kettle body, and a feeding hole is formed in the upper end of the chemical material pipe;
the primary feeder is connected to one side of the feeding pipe;
the secondary feeder is connected to one side of the feeding pipe and is positioned below the primary feeder.
Furthermore, in the novel continuous melting material melting equipment structure, a buffer tube is connected between the primary feeder and the secondary feeder, and a first balance tube is connected between the buffer tube and the primary feeder.
Further, in the novel continuous melting material melting equipment structure, the novel continuous melting material melting equipment structure further comprises a second balance pipe, wherein the second balance pipe is arranged in the material melting kettle body, and the balance pipe penetrates through the first sieve plate, the second sieve plate and the third sieve plate.
Further, in the above-mentioned novel continuous melting equipment structure, still include:
the liquid inlet end of the slurry cache tank is communicated with the discharge port of the chemical material kettle body;
and the stirrer is arranged in the slurry buffer tank.
Further, in the novel continuous melting material equipment structure, the discharge port is provided with an electric control valve.
Further, in the novel continuous melting material melting equipment structure, the first connecting pipe branches to form a first branch pipe, the end of the first branch pipe is connected to the top of the material melting kettle body, the second connecting pipe branches to form a second branch pipe, and the end of the second branch pipe is connected to the top of the material melting kettle body.
Further, in the above-mentioned novel continuous melting equipment structure, still include:
the transmission shaft is connected to the boiler through a steam pipe;
the hot water recovery tank, be equipped with heating coil in the hot water recovery tank, heating coil's top and end all are connected through the vapor tube with the boiler, the export in hot water recovery tank is through third connecting pipe and first connecting pipe and second connecting pipe intercommunication respectively.
Further, in the novel continuous melting material equipment structure, the third connecting pipe is connected with an electric switch valve, a water flow accumulator and an electromagnetic flowmeter.
Furthermore, in the novel continuous melting material equipment structure, the liquid outlet end of the slurry buffer tank is connected to the plate-and-frame filter press through a pipeline.
The invention has the beneficial effects that:
in the novel continuous melting material melting equipment structure, the inner cavity of the reaction kettle body is divided into a plurality of layers of spaces by the first sieve plate, the second sieve plate and the third sieve plate, the aperture of each layer of sieve plate is gradually reduced from top to bottom, the aperture number is gradually increased, and when materials enter the reaction kettle body, the materials fall on the first sieve plate in the kettle. Because the kettle is filled with a solution of approximately 80%, the solid water glass is dissolved into liquid water glass under the action of high temperature and high pressure. In the water glass dissolving process, the volume of the solid water glass gradually decreases, and when the solid water glass is smaller than the aperture of the first sieve plate, the solid water glass falls into the next layer and continuously reacts with the liquid in the kettle. The liquid in the kettle is continuously reacted with the liquid in the kettle after the volume is reduced, the liquid drops to the next layer from the second sieve plate, the liquid drops to the lower layer from the third sieve plate until all the liquid water glass is completely dissolved and then sinks to the bottom of the kettle, and the stirring rod of the scraping device at the bottom of the kettle always keeps rotating, so that the material at the bottom can be kept in a flowing state, and meanwhile, upward flowing direction is generated. The liquid water glass is sprayed into the slurry buffer tank through the bottom discharge port by utilizing the internal pressure in the kettle. The middle lower part of the reaction kettle body is provided with a circulating liquid outlet, and water or liquid medicine is sent to the coil pipe at the upper part or the top part through an external centrifugal pump, so that the water or the liquid medicine enters the kettle again to participate in the reaction, thereby playing a role in circulation. According to the size of the reaction kettle body, through the improvement of the melting material melting machine equipment, steam can be saved, material blocking can be avoided, and the service life of the equipment is prolonged.
Drawings
FIG. 1 is a schematic diagram of a novel continuous melting apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a partial structure of a novel continuous melting apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a partial structure of a novel continuous melting apparatus according to an embodiment of the present invention;
description of the reference numerals:
1. a material melting kettle body; 2. a feeding device; 21. a feed inlet; 22. a primary feeder; 23. a secondary feeder; 24. a buffer tube; 25. a first balance pipe; 3. a discharge port; 4. a first screen plate; 5. a second screen plate; 6. a third screen plate; 7. a first connection pipe; 71. a first branch pipe; 8. a second connection pipe; 81. a second branch pipe; 9. a third connection pipe; 91. an electric switch valve; 92. a water flow accumulator; 93. an electromagnetic flowmeter; 10. a first liquid return spray pipe; 11. a second liquid return spray pipe; 12. a scraping device; 121. a transmission shaft; 1211. a liquid inlet joint; 1212. a liquid outlet joint; 1213. a vapor tube; 122. a motor; 123. a stirring rod; 1231. a through hole; 124. scraping blade; 125. a material guiding device; 126. a groove; 127. convex ribs; 13. a second balance pipe; 14. a slurry buffer tank; 141. a stirrer; 15. a boiler; 16. a hot water recovery tank; 161. a heating coil; 17. a plate and frame filter press; 18. and a viewing mirror opening.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Example 1
Referring to fig. 1 to 3, a novel continuous melting apparatus includes:
the material melting kettle comprises a material melting kettle body 1, wherein the material melting kettle body 1 is cylindrical with an axial direction in a vertical direction;
the feeding device 2 is connected to the upper part of the chemical material kettle body 1;
the discharge port 3 is arranged at the bottom of the material melting kettle body 1;
the first sieve plate 4 is arranged inside the material melting kettle body 1;
the second sieve plate 5 is arranged inside the material melting kettle body 1, the second sieve plate 5 is positioned below the first sieve plate 4, and the sieve holes of the second sieve plate 5 are smaller than those of the first sieve plate 4;
the third sieve plate 6 is arranged in the material melting kettle body 1, the third sieve plate 6 is positioned below the second sieve plate 5, and the sieve holes of the third sieve plate 6 are smaller than those of the second sieve plate 5;
the two ends of the first connecting pipe 7 are respectively communicated with the side wall of the chemical material kettle body 1, the initial end of the first connecting pipe 7 is positioned between the second sieve plate 5 and the first sieve plate 4, and the tail end of the first connecting pipe 7 is positioned above the first sieve plate 4;
the first liquid return spray pipe 10 is positioned in the material melting kettle body 1, the first liquid return spray pipe 10 is arranged above the first sieve plate 4, and the first liquid return spray pipe 10 is communicated with the tail end of the first connecting pipe 7;
the two ends of the second connecting pipe 8 are respectively communicated with the side wall of the chemical kettle body 1, the initial end of the second connecting pipe 8 is positioned below the third sieve plate 6, and the tail end of the second connecting pipe 8 is positioned between the first sieve plate 4 and the second sieve plate 5;
the second liquid return spray pipe 11, the first liquid return spray pipe 10 is positioned in the material melting kettle body 1, and the second liquid return spray pipe 11 is arranged between the first sieve plate 4 and the second sieve plate 5;
scraping device 12, scraping device 12 sets up the bottom in the chemical industry cauldron body 1, scraping device 12 includes:
the axis of the transmission shaft 121 coincides with the axis of the material melting kettle, the transmission shaft 121 is provided with a hollow first inner cavity, the transmission shaft 121 is connected with a liquid inlet joint 1211 and a liquid outlet joint 1212 through a rotary joint, and the transmission shaft 121 is connected with a vapor tube 1213 through a rotary joint;
the motor 122, the said motor 122 is connected with transmission shaft 121 transmission;
the stirring rod 123 is in transmission connection with the transmission shaft 121, the stirring rod 123 is provided with a second inner cavity communicated with the first inner cavity, and a plurality of through holes 1231 are uniformly distributed on the surface of the stirring rod 123;
a scraper blade 124, the scraper blade 124 being connected to the stirring rod 123.
The feeding device 2 includes:
the feeding pipe is coaxially connected to the top of the chemical material kettle body 1, and the upper end of the chemical material pipe is provided with a feeding hole 21;
a primary feeder 22, the primary feeder 22 being connected to one side of the feed pipe;
a secondary feeder 23, the secondary feeder 23 being connected to one side of the feed pipe, the secondary feeder 23 being located below the primary feeder 22.
A buffer tube 24 is connected between the primary feeder 22 and the secondary feeder 23, and a first balance tube 25 is connected between the buffer tube 24 and the primary feeder 22.
The chemical material kettle further comprises a second balance pipe 13, wherein the second balance pipe 13 is arranged in the chemical material kettle body 1, and the balance pipe penetrates through the first sieve plate 4, the second sieve plate 5 and the third sieve plate 6.
The working principle of the novel continuous melting equipment is as follows:
the material enters the chemical kettle body 1 from the first-stage feeder 22 and the second-stage feeder 23 at the top of the chemical kettle body 1 through lifting equipment, the first-stage feeder 22 is opened, the second-stage feeder 23 is in a closed state, solid water glass enters the buffer tube 24 through the first-stage feeder 22, after the first-stage feeder 22 is closed, the second-stage feeder 23 is opened, and the material enters the reaction kettle body and falls on the first sieve plate 4 in the kettle. Because the kettle is filled with a solution of approximately 80%, the solid water glass is dissolved into liquid water glass under the action of high temperature and high pressure. In the water glass dissolving process, the volume of the solid water glass gradually decreases, and when the solid water glass is smaller than the aperture of the first sieve plate 4, the solid water glass falls into the next layer and continuously reacts with the liquid in the kettle. The liquid in the kettle is continuously reacted with the liquid in the kettle after the volume is reduced, the liquid falls to the next layer from the second sieve plate 5, and the liquid is similarly fallen to the lower layer from the third sieve plate 6 until all the liquid water glass is completely dissolved and then falls to the bottom of the kettle, and the stirring rod 123 of the scraping device 12 at the bottom of the kettle always keeps rotating, so that the flowing state of the bottom material can be kept, and meanwhile, the upward flowing direction is generated. The liquid water glass is sprayed into the slurry buffer tank 14 through the bottom discharge port 3 by utilizing the internal pressure in the kettle. The middle lower part of the reaction kettle body is provided with a circulating liquid outlet, and water or liquid medicine is sent to the coil pipe at the upper part or the top part through an external centrifugal pump, so that the water or the liquid medicine enters the kettle again to participate in the reaction, thereby playing a role in circulation. The viewing mirror openings 18 (or sampling openings) are arranged at different heights according to the process requirements, so that the internal reaction condition can be conveniently observed; the shaft core of the bottom motor 122 is a hollow shaft, the diluent (steam) enters the stirring rod 123 at the bottom of the kettle through the hollow shaft, a small through hole 1231 is formed in the surface of the stirring rod 123, referring to fig. 2, the through hole 1231 is positioned at the lower part of the stirring rod 123, the diluent (steam) is sprayed to the bottom of the kettle through the through hole 1231, the effect of diluting liquid sodium silicate is achieved, and the temperature of the solution is maintained. The water glass solution after the dissolution reaction is sprayed into a slurry buffer tank 14 through a discharge hole 3, water is used for preparing a dilute solution with a certain concentration into the slurry buffer tank 14, then certain acid is added under certain conditions to precipitate silicon dioxide, the silicon dioxide is pumped into a plate-and-frame filter press 17 for solid-liquid separation, and the silicon dioxide is conveyed to the next manufacturing procedure through a bottom screw.
Above-mentioned reation kettle body is pressure vessel to first sieve 4, second sieve 5 and third sieve 6 divide into the multilayer space with reation kettle body inner chamber, the aperture of every layer of sieve reduces from last to lower gradually, the hole number increases gradually, be equipped with balanced pipe (second balanced pipe 13) more than 2 in the cauldron according to reation kettle body's size, be evenly arranged, every pipe is located the part of sieve top and all is equipped with evenly distributed's aperture, make the upper and lower two parts through-hole 1231 this pipe direct communication of cauldron internal orifice board, the second balanced pipe 13 is fixed through welded fastening on the sieve, in order to solve because of upper portion produces one deck melt to block up the sieve mesh, cause the liquid water glass after the upper portion is dissolved can't carry out the problem of blowing through the sieve mesh.
In the above-mentioned scraping device 12 structure, a plurality of puddler 123 become circumference array and distribute, its center passes through the connecting piece and is connected fixedly through the keyway with transmission shaft 121, motor 122 drives transmission shaft 121 and rotates, thereby drive puddler 123 and rotate, because transmission shaft 121 has hollow first inner chamber, puddler 123 has the second inner chamber with first inner chamber intercommunication, diluent (vapour) is through steam pipe flow through first inner chamber and second inner chamber, spout to the cauldron bottom through-hole 1231 on the puddler 123, thereby at the rotatory in-process of puddler 123, not only can dilute the material, still play the stirring effect and prevent to dissolve admittedly.
Referring to fig. 2, a conical material guiding device 125 is disposed above the transmission shaft 121 and above the connection center of each stirring rod 123, so that the material can be effectively and uniformly dispersed at the bottom of the kettle, and the material can be uniformly diluted. The stirring efficiency can be further improved by a plurality of scraping blades 124 connected with the lower part of the stirring rod 123, and the dissolution and fixation of materials are avoided. The end of the stirring rod 123 is inclined upwards by 5-20 degrees, the scraping blade 124 is close to the bottom of the kettle, the middle part of the bottom of the kettle is provided with a groove 126, the discharge port 3 is arranged on one side of the groove 126, the transmission shaft 121 is provided with an outwards protruding rib 127 corresponding to the position of the groove 126, the stirring assisting effect is achieved, and the auxiliary materials can be smoothly discharged from the discharge port 3.
In the structure, continuous feeding, continuous reaction and continuous discharging can be realized; full-automatic DCS control, automatic circulation of solution in the kettle, on-line monitoring of the pH value of the liquid and automatic adjustment are realized; temperature and pressure are monitored and adjusted in real time; the steam use cost during production is reduced, the equipment cost is reduced, the instability of the product quality caused by human misoperation is reduced, and the product quality and the productivity are improved.
In the structure, the number of layers of the sieve plates in the kettle, the pore size of the sieve plates and the spatial distribution of each layer separated by the sieve plates are not fixed, and can be adjusted according to the process requirements.
Example 2
The novel continuous melting apparatus according to embodiment 1, further comprising:
the slurry buffer tank 14, the liquid inlet end of the slurry buffer tank 14 is communicated with the discharge port 3 of the chemical material kettle body 1; a stirrer 141, said stirrer 141 being disposed within the slurry buffer tank 14.
Example 3
The novel continuous melting and melting device of the embodiment 1, wherein the discharge port 3 is provided with an electric control valve.
Example 4
The novel continuous melting material device of embodiment 1, wherein the first connecting pipe 7 branches out to a first branch pipe 71, the end of the first branch pipe 71 is connected to the top of the melting material kettle body 1, the second connecting pipe 8 branches out to a second branch pipe 81, and the end of the second branch pipe 81 is connected to the top of the melting material kettle body 1.
Example 5
The novel continuous melting apparatus according to embodiment 1, further comprising:
a boiler 15, the transmission shaft 121 is connected to the boiler 15 through a steam pipe 1213;
the hot water recovery tank 16, be equipped with heating coil 161 in the hot water recovery tank 16, heating coil 161's top and terminal all are connected through the steam pipe 1213 with boiler 15, the export of hot water recovery tank 16 is through third connecting pipe 9 with first connecting pipe 7 and second connecting pipe 8 intercommunication respectively.
Example 6
The novel continuous melting apparatus according to embodiment 5, wherein the third connecting pipe 9 is connected with an electric switch valve 91, a water flow rate totalizer 92 and an electromagnetic flowmeter 93.
Example 7
The novel continuous melting apparatus according to embodiment 2, wherein the liquid outlet end of the slurry buffer tank 14 is connected to a plate and frame filter press 17 through a pipe.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.

Claims (9)

1. A continuous melting apparatus, comprising:
the material melting kettle body is cylindrical with an axial direction in a vertical direction;
the feeding device is connected to the upper part of the material melting kettle body;
the discharge port is arranged at the bottom of the material melting kettle body;
the first sieve plate is arranged inside the material melting kettle body;
the second sieve plate is arranged inside the material melting kettle body, is positioned below the first sieve plate, and has sieve holes smaller than those of the first sieve plate;
the third sieve plate is arranged in the material melting kettle body, is positioned below the second sieve plate, and has sieve pores smaller than those of the second sieve plate;
the second balance pipe is arranged in the material melting kettle body and penetrates through the first sieve plate, the second sieve plate and the third sieve plate;
the two ends of the first connecting pipe are respectively communicated with the side wall of the chemical material kettle body, the initial end of the first connecting pipe is positioned between the second sieve plate and the first sieve plate, and the tail end of the first connecting pipe is positioned above the first sieve plate;
the first liquid return spray pipe is positioned in the material melting kettle body, is arranged above the first sieve plate and is communicated with the tail end of the first connecting pipe;
the two ends of the second connecting pipe are respectively communicated with the side wall of the material melting kettle body, the initial end of the second connecting pipe is positioned below the third sieve plate, and the tail end of the second connecting pipe is positioned between the first sieve plate and the second sieve plate;
the second liquid return spray pipe is positioned in the material melting kettle body and is arranged between the first sieve plate and the second sieve plate;
scrape material device, scrape material device setting in this internal bottom of material cauldron, scrape material device and include:
the axis of the transmission shaft coincides with the axis of the material melting kettle, the transmission shaft is provided with a hollow first inner cavity, the transmission shaft is connected with a liquid inlet connector and a liquid outlet connector through a rotary connector, and the transmission shaft is connected with a vapor pipe through the rotary connector;
the motor is in transmission connection with the transmission shaft;
the stirring rod is in transmission connection with the transmission shaft, the stirring rod is provided with a second inner cavity communicated with the first inner cavity, and a plurality of through holes are uniformly distributed on the surface of the stirring rod;
scraping blade, scraping blade connects in the puddler.
2. The continuous melting and melting apparatus of claim 1, wherein the feeding means includes:
the feeding pipe is coaxially connected to the top of the chemical material kettle body, and a feeding hole is formed in the upper end of the feeding pipe;
the primary feeder is connected to one side of the feeding pipe;
the secondary feeder is connected to one side of the feeding pipe and is positioned below the primary feeder.
3. The continuous melting and melting apparatus of claim 2 wherein a buffer tube is connected between the primary and secondary feeders, and a first balance tube is connected between the buffer tube and the primary feeder.
4. The continuous melting furnace apparatus of claim 1, further comprising:
the liquid inlet end of the slurry cache tank is communicated with the discharge port of the chemical material kettle body;
and the stirrer is arranged in the slurry buffer tank.
5. The continuous melting and melting apparatus of claim 1 wherein the outlet is provided with an electrically operated valve.
6. The continuous melting and melting apparatus of claim 1, wherein the first connecting pipe branches off a first branch pipe, the first branch pipe end connects to the top of the melting kettle body, the second connecting pipe branches off a second branch pipe, and the second branch pipe end connects to the top of the melting kettle body.
7. The continuous melting furnace apparatus of claim 1, further comprising:
the transmission shaft is connected to the boiler through a steam pipe;
the hot water recovery tank, be equipped with heating coil in the hot water recovery tank, heating coil's top and end all are connected through the vapor tube with the boiler, the export in hot water recovery tank is through third connecting pipe and first connecting pipe and second connecting pipe intercommunication respectively.
8. The continuous melting apparatus of claim 7, wherein the third connecting pipe is connected with an electric switching valve, a water flow rate totalizer, and an electromagnetic flowmeter.
9. The continuous melting apparatus of claim 4, wherein the slurry buffer tank has a liquid outlet end connected to a plate and frame filter press by a pipe.
CN202210138580.5A 2022-02-15 2022-02-15 Novel continuous melting material melting equipment Active CN114505023B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190425394A (en) * 1904-11-22 1904-12-22 John Bell Watson Improvements in and in Means for Obtaining a Dissolution of Sodium Silicate.
CN204034689U (en) * 2014-08-30 2014-12-24 安徽确成硅化学有限公司 The static material still of sodium metasilicate of ventilation can be balanced
CN109319801A (en) * 2018-11-02 2019-02-12 株洲兴隆新材料股份有限公司 The modification method and device of soluble glass of high modulus solid static pressure dissolution
CN208894213U (en) * 2018-09-14 2019-05-24 枝江市富成化工有限责任公司 A kind of waterglass reaction kettle
CN110496557A (en) * 2019-09-09 2019-11-26 湖北金晟远环保科技股份有限公司 A kind of New Type Silicate material kettle and its production technology
CN213348476U (en) * 2020-05-26 2021-06-04 河南省大潮炭能科技有限公司 Material melting device
CN213493273U (en) * 2020-10-29 2021-06-22 山东龙港硅业科技股份有限公司 Solid sodium silicate is with chemical material cauldron

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190425394A (en) * 1904-11-22 1904-12-22 John Bell Watson Improvements in and in Means for Obtaining a Dissolution of Sodium Silicate.
CN204034689U (en) * 2014-08-30 2014-12-24 安徽确成硅化学有限公司 The static material still of sodium metasilicate of ventilation can be balanced
CN208894213U (en) * 2018-09-14 2019-05-24 枝江市富成化工有限责任公司 A kind of waterglass reaction kettle
CN109319801A (en) * 2018-11-02 2019-02-12 株洲兴隆新材料股份有限公司 The modification method and device of soluble glass of high modulus solid static pressure dissolution
CN110496557A (en) * 2019-09-09 2019-11-26 湖北金晟远环保科技股份有限公司 A kind of New Type Silicate material kettle and its production technology
CN213348476U (en) * 2020-05-26 2021-06-04 河南省大潮炭能科技有限公司 Material melting device
CN213493273U (en) * 2020-10-29 2021-06-22 山东龙港硅业科技股份有限公司 Solid sodium silicate is with chemical material cauldron

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