CN113955760B - Preparation equipment and process of white carbon black - Google Patents
Preparation equipment and process of white carbon black Download PDFInfo
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- CN113955760B CN113955760B CN202111236180.XA CN202111236180A CN113955760B CN 113955760 B CN113955760 B CN 113955760B CN 202111236180 A CN202111236180 A CN 202111236180A CN 113955760 B CN113955760 B CN 113955760B
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/126—Preparation of silica of undetermined type
- C01B33/128—Preparation of silica of undetermined type by acidic treatment of aqueous silicate solutions
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/32—Alkali metal silicates
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- 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
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The invention relates to the technical field of white carbon black preparation and discloses a preparation device and a preparation process of white carbon black, wherein the preparation device comprises a calciner, the calciner comprises a combustion chamber, a regenerator is fixedly connected to the back of the combustion chamber, a gas inlet pipe is fixedly connected to the side surface of the combustion chamber, a gas inlet pipe is fixedly connected to one side of the gas inlet pipe away from the combustion chamber, a tank cover is fixedly connected to the side surface of the bottom end of the gas inlet pipe, and a filter tank is fixedly connected to the bottom end of the tank cover. The invention is beneficial to reducing the production cost of the white carbon black by arranging the combustion furnace, the filtering mechanism, the dissolving mechanism and the drying mechanism and adopting a novel production process, thereby reducing the production cost of the white carbon black, the produced white carbon black has higher quality and better comprehensive performance, and clean hot water is introduced into the solution after the liquid flowing out of the dissolving roller exchanges heat with clean water, so that the cost required by heating the clean water is reduced.
Description
Technical Field
The invention relates to the technical field of white carbon black preparation, in particular to white carbon black preparation equipment and a white carbon black preparation process.
Background
White carbon black is a general term for white powder X-ray amorphous silicic acid and silicate products, mainly refers to precipitated silica, fumed silica and superfine silica gel, also comprises powder synthetic aluminum silicate, calcium silicate and the like, is used as an environment-friendly and excellent auxiliary agent, and is mainly used in the fields of rubber products, textiles, papermaking, pesticides and food additives.
White carbon black is roughly divided into precipitation white carbon black and gas phase white carbon black according to a production method, the gas phase white carbon black is white amorphous flocculent semitransparent solid colloidal nano particles in a normal state, the white carbon black is nontoxic and has a huge specific surface area, and the gas phase white carbon black is all nano silicon dioxide, so that the product purity is high, but the preparation process is complex and the price is high.
When the quality of the produced white carbon black is higher in production, the production cost is higher, combustion is needed in the production process, partial impurities can enter the white carbon black after combustion, the manufacturability of the final white carbon black is reduced, and the white carbon black is combusted and cooled for many times in the production process, so that the cost is increased and the resource is wasted.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides equipment and a process for preparing white carbon black, and the technical problems to be solved by the invention are as follows: the production cost of the white carbon black is high and the quality of the white carbon black finished product is poor.
The equipment for preparing the white carbon black comprises a calciner and further comprises:
a filtering mechanism: the device is arranged on the side surface of the calciner and is fixedly connected with the calciner;
cyclone separator: the filter is arranged on the side surface of the filter mechanism and is fixedly connected with the filter mechanism;
dissolution mechanism: the cyclone separator is arranged on one side far away from the calciner;
a heat exchanger: the filter is arranged on one side of the dissolving mechanism, which is far away from the filtering mechanism, and is fixedly connected with the dissolving mechanism;
proportioning box: the heat exchanger is arranged at one side far away from the dissolution mechanism;
and a drying mechanism: the proportioning box is arranged at one side far away from the heat exchanger;
and (3) an exhaust pipe: is arranged on the side surface of the drying mechanism and is fixedly connected with the drying mechanism.
Further, the calciner includes the combustion chamber, the back fixedly connected with regenerator of combustion chamber, the side fixedly connected with gas intake pipe of combustion chamber, one side fixedly connected with gas intake pipe that the combustion chamber was kept away from to the gas intake pipe, the side fixedly connected with case lid of gas intake pipe bottom, the bottom fixedly connected with rose box of case lid, the top swing joint of case lid has the carousel, the bottom fixedly connected with rotation screw rod of carousel, the middle part threaded connection of rotation screw rod side has the rotary drum, the side fixedly connected with filter of rotary drum, the bottom fixedly connected with stopper of rotation screw rod, the bottom fixedly connected with gas exit tube of rose box side, the bottom fixedly connected with separation chamber of gas exit tube, the bottom fixedly connected with inlet chamber of separation chamber, the gas exit tube is located the bottom of rose box, just the filter is located the top of rose box all the time, the gas intake pipe is located the top position of rose box, just the gas intake pipe is located the top of filter, the side and the inboard in close contact of rose box of filter plate, the bottom of rotation screw rod should be equipped with the chamfer, convenient filter plate is put into the internally mounted.
Further, the dissolution mechanism includes the dissolution cylinder, the middle part fixedly connected with drive gear of dissolution cylinder side, drive gear's outer edge transmission is connected with output mechanism, the equal intermeshing of gear, the both ends fixedly connected with spacing ring of dissolution cylinder side, the side swing joint of spacing ring has the guide rail, the side fixedly connected with connecting block of guide rail, the bottom fixedly connected with fixed plate of connecting block, the spout has been seted up to the side of guide rail, the spacing ring is located the spout of guide rail, the spout degree of depth of guide rail is greater than three centimetres, the bottom of dissolution cylinder both sides all is equipped with the guide rail to when preventing to dissolve the rotation of cylinder drive spacing ring, the spacing ring can break away from the guide rail, the security of improvement equipment operation.
Further, the side fixedly connected with inlet tube of dissolving the cylinder, one side fixedly connected with heat transfer board of dissolving the cylinder is kept away from to the inlet tube, one side fixedly connected with outlet pipe on heat transfer board top, the opposite side fixedly connected with waste pipe on heat transfer board top, one side fixedly connected with water tank of heat transfer board is kept away from to the outlet pipe, the waste pipe is kept away from one side fixedly connected with of output mechanism with dissolving the cylinder to the heat transfer board side, the outlet pipe outflow is clean water, and after the water that flows out in the outlet pipe carries out heat exchange through the heat transfer board, from the inlet tube inflow to dissolve in the cylinder, the water that flows out of drain pipe flows out through the waste pipe outflow after carrying out heat exchange through the heat transfer board, reduces the cost that the water in the water tank risees.
Further, the side of proportioning box is equipped with the drying tower, the top fixedly connected with discharge pipe of drying tower side, the bottom fixedly connected with of discharge pipe collects the sack, one side fixedly connected with blast pipe that the drying tower was kept away from to the collection sack, one side fixedly connected with aiutage that the collection sack was kept away from to the blast pipe, aiutage's height is greater than twenty meters, and exhaust gas itself is clean harmless in the blast pipe, and is only the temperature is higher, and consequently exhaust gas can be discharged after the aiutage cools down, is favorable to reducing the greenhouse effect.
The preparation process of the white carbon black is characterized in that the preparation process of the white carbon black comprises the following steps: the preparation stage, the calcination section, the alkali dissolving section, the reaction section and the drying section.
Further, the flow of the calcination working section is as follows: mixing sodium carbonate and quartz sand according to a proportion, putting the mixture into a calcining furnace, carrying out fusion reaction at a high temperature of 1300-1500 ℃, adopting purified gas stove gas as the fuel of the calcining furnace, cyclone settling and water seal purification of the gas stove gas, feeding the purified gas stove gas into a combustion chamber of the calcining furnace, recycling waste heat from a regenerative chamber of the calcining furnace, discharging the waste heat from a forty-five meter high chimney, spraying water and humidifying gas stove slag and dedusting ash, and then selling and comprehensively utilizing the waste heat and the dedusting ash;
the melt produced by the calcination reaction flows out of the furnace to a quenching tank, solid water glass is obtained after direct water spraying quenching, after the waste heat of the quenching waste water is recovered by a plate heat exchanger (indirect heat exchange is carried out on the quenching waste water and fresh water is heated and enters a hot water tank of a reaction section as reaction water), the reaction type in the calcination process is recycled, and the reaction formula is as follows: nNa2 CO3+mSiO2- & gt nNa O.mSiO2+nCO2 ≡.
Further, the detailed flow of the alkali dissolving section is as follows: the quenched solid water glass is sent into a dissolving roller, steam and hot water are introduced for dissolving, liquid water glass is obtained, the liquid water glass is recycled by a buffer tank and a liquid discharge tank, after waste heat is recycled by a plate heat exchanger (indirect heat exchange is carried out on the liquid water and the heated liquid water enters the hot water tank to serve as dissolving water), and the liquid water glass is pumped to a reaction section alkali storage tank for standby.
Further, the detailed flow of the reaction section is as follows: pumping liquid sodium silicate in an alkali storage tank into an alkali tank before configuration, pumping the alkali tank into a configuration tank before configuration, adding water to prepare the alkali tank to a proper concentration, and pumping the alkali tank after configuration for later use;
secondly, pumping the prepared liquid sodium silicate into a reactor, introducing steam and hot water, adding concentrated sulfuric acid, controlling certain process conditions for reaction to obtain qualified reaction slurry, recovering waste heat of the reaction slurry through a tube-in-tube heat exchanger (indirectly exchanging heat with fresh water, heating the fresh water, and feeding the heated fresh water into a hot water tank of a reaction section as reaction water), and feeding the reaction slurry into an intermediate tank for later use;
and finally, delivering the reaction slurry to a plate-and-frame filter press for filtering, washing and drying to form a white carbon black filter cake with the solid content of 20%, pulping the filter cake by a pulper, pumping a thick slurry tank of a drying section for standby, discharging filter press filtrate and washing wastewater after precipitation and neutralization treatment, and carrying out the comprehensive utilization of calcium sulfate slag generated by precipitation in an out-sale manner, wherein the reaction formula in the reaction process is as follows: nNa2 O.mSiO2+nH2SO4- > nNa2 SO4+mSiO2.nH2O.
Further, pumping the white carbon black thick slurry in the thick slurry tank into a centrifugal nozzle of a drying tower, contacting with hot air from a hot blast stove in the drying tower, evaporating water to obtain qualified white carbon black, carrying out gas-solid separation by a cloth bag collector to recover a finished product, directly packaging and warehousing the finished product collected by the cloth bag collector, discharging tail gas discharged from the cloth bag collector by a 20-meter high exhaust funnel, and returning finished product dust generated in the packaging process to the cloth bag collector;
after indirectly exchanging heat between a heat exchange chamber and cold air, flue gas generated in the coal burning process of the hot blast stove is discharged through a twenty-five meter high chimney after dust removal by a cloth bag, and coal cinder of the hot blast stove and dust removed dust ash collected by dust removal are sold for comprehensive utilization after water spraying and humidification.
The invention has the technical effects and advantages that:
1. the invention is beneficial to reducing the production cost of the white carbon black by arranging the combustion furnace, the filtering mechanism, the dissolving mechanism and the drying mechanism, and reduces the production cost of the white carbon black by adopting a novel production process, and the produced white carbon black has higher quality and better comprehensive performance;
2. according to the invention, the rotating screw, the filter box and the filter plate are arranged, so that the quality of a white carbon black finished product is improved, the white carbon black is subjected to solid-gas separation and then enters the filter box, solution in the filter box is absorbed firstly, and the residual solid is filtered through the filter plate, so that clean coal gas is combusted, and the quality of the white carbon black finished product is improved;
3. the invention is beneficial to reducing the cost by arranging the heat exchange plate, the dissolving roller and the water inlet pipe, and the clean hot water is introduced after the liquid flowing out of the dissolving roller exchanges heat with the clean water, so that the cost required by heating the clean water is reduced, and the production process is more environment-friendly.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
FIG. 2 is a schematic structural view of the calcination section of the present invention.
FIG. 3 is a schematic diagram of a filter structure according to the present invention.
FIG. 4 is a schematic view of the dissolution section structure of the present invention.
FIG. 5 is a schematic view of the collecting and discharging structure of the present invention
FIG. 6 is a flow chart of the production process of the present invention
The reference numerals are: 1. a calciner; 101. a combustion chamber; 102. a regenerator; 2. a filtering mechanism; 201. a gas inlet pipe; 202. a filter box; 203. a case cover; 204. a turntable; 205. rotating the screw; 206. a rotating drum; 207. a limiting block; 208. a filter plate; 3. a cyclone separator; 301. an intake chamber; 302. a separation chamber; 303. a gas outlet pipe; 4. a dissolution mechanism; 401. a dissolving drum; 402. a transmission gear; 403. a limiting ring; 404. a guide rail; 405. a connecting block; 406. a fixing plate; 407. an output mechanism; 5. a heat exchanger; 501. a heat exchange plate; 502. a water tank; 503. a water outlet pipe; 504. a water inlet pipe; 505. a drain pipe; 506. a waste pipe; 6. a proportioning box; 7. a drying mechanism; 701. a drying tower; 702. a discharge pipe; 703. collecting a cloth bag; 704. an exhaust pipe; 8. and an exhaust pipe.
Detailed Description
The embodiments of the present invention will be clearly and completely described below with reference to the drawings in the present invention, and the forms of the structures described in the following embodiments are merely examples, and the apparatus for producing white carbon black for construction sites and the process thereof according to the present invention are not limited to the structures described in the following embodiments, and all other embodiments obtained by a person having ordinary skill in the art without making any creative effort are within the scope of the present invention.
Referring to fig. 1, the invention provides a white carbon black preparation device and a process thereof, wherein the device comprises a calciner 1, and further comprises:
and a filtering mechanism 2: the device is arranged on the side surface of the calciner 1 and is fixedly connected with the calciner 1;
cyclone separator 3: the filter is arranged on the side surface of the filter mechanism 2 and is fixedly connected with the filter mechanism 2;
dissolution mechanism 4: placed on the side of the cyclone 3 remote from the calciner 1;
heat exchanger 5: the device is arranged on one side of the dissolving mechanism 4 far away from the filtering mechanism 2 and is fixedly connected with the dissolving mechanism 4;
proportioning box 6: is arranged on one side of the heat exchanger 5 far away from the dissolution mechanism 4;
drying mechanism 7: is arranged at one side of the proportioning box 6 far away from the heat exchanger 5;
exhaust stack 8: is arranged on the side surface of the drying mechanism 7 and is fixedly connected with the drying mechanism 7.
Referring to fig. 2 and 3, the calciner 1 includes a combustion chamber 101, a regenerator 102 is fixedly connected to the back of the combustion chamber 101, a gas inlet pipe 201 is fixedly connected to the side surface of the combustion chamber 101, one side of the gas inlet pipe 201, which is far away from the combustion chamber 101, is fixedly connected with a gas inlet pipe 201, a tank cover 203 is fixedly connected to the side surface of the bottom surface of the gas inlet pipe 201, a filter tank 202 is fixedly connected to the bottom end of the tank cover 203, a turntable 204 is movably connected to the top end of the tank cover 203, a rotating screw 205 is fixedly connected to the bottom end of the turntable 204, a rotary drum 206 is connected to the middle thread of the side surface of the rotating screw 205, a filter plate 208 is fixedly connected to the side surface of the rotary drum 206, a limit block 207 is fixedly connected to the bottom end of the rotating screw 205, a gas outlet pipe 303 is fixedly connected to the bottom end of the filter tank 202, a separation chamber 302 is fixedly connected to a gas inlet chamber 301, gas solid matters in the gas outlet pipe 303 are separated by the separation chamber 302, then enter into a filter tank 202, sulfide in the gas can be separated by the filter plate 208, and solution in the filter tank 202 can absorb the sulfide in the gas, the turntable 204 is rotated to drive the rotary drum 206, thereby the filter plate 208 is rotated, the filter plate is moved up and the filter plate 202 is moved down, the inner wall of the filter tank is cleaned, and the quality of the gas is cleaned, and the carbon black is cleaned, and the quality of the solid black is convenient, and the inside the filter tank is cleaned, and the inside the filter chamber is 101.
Referring to fig. 4, the dissolving mechanism 4 comprises a dissolving roller 401, a transmission gear 402 is fixedly connected to the middle of the side surface of the dissolving roller 401, an output mechanism 407 is connected to the outer edge of the transmission gear 402 in a transmission manner, the gears are mutually meshed, two ends of the side surface of the dissolving roller 401 are fixedly connected with limiting rings 403, guide rails 404 are movably connected to the side surfaces of the limiting rings 403, connecting blocks 405 are fixedly connected to the side surfaces of the guide rails 404, a fixing plate 406 is fixedly connected to the bottom ends of the connecting blocks 405, and the output mechanism 407 drives the transmission gear 402 to rotate, so that the dissolving roller 401 rotates, the limiting rings 403 are driven to move in sliding grooves of the guide rails 404, stable rotation of the dissolving roller 401 is guaranteed, and when the dissolving roller 401 rotates, the dissolving efficiency of each substance in the dissolving roller 401 is improved, the dissolving effect is improved, and the reaction time is reduced.
Referring to fig. 4, a water inlet pipe 504 is fixedly connected to a side surface of the dissolution drum 401, a heat exchange plate 501 is fixedly connected to one side of the water inlet pipe 504 far from the dissolution drum 401, a water outlet pipe 503 is fixedly connected to one side of the top end of the heat exchange plate 501, a waste water pipe 506 is fixedly connected to one side of the water outlet pipe 503 far from the heat exchange plate 501, a water tank 502 is fixedly connected to the bottom end of the side surface of the heat exchange plate 501, the waste water pipe 506 is fixedly connected to one side of the dissolution drum 401 far from the output mechanism 407, clean water flowing out of the water tank 502 enters the dissolution drum 401 through the heat exchange plate 501 for reaction after passing through the water inlet pipe 504, liquid water glass reacted in the dissolution drum 401 is discharged through the waste water pipe 506 for collection after passing through the heat exchange plate 501, heat generated when the liquid water glass is cooled is used for heating liquid in the water outlet pipe 503, resource utilization rate is improved, and cost control is facilitated.
Referring to fig. 5, a drying tower 701 is arranged on the side surface of the proportioning bin 6, a discharge pipe 702 is fixedly connected to the top end of the side surface of the drying tower 701, a collection cloth bag 703 is fixedly connected to the bottom end of the discharge pipe 702, an exhaust pipe 704 is fixedly connected to one side of the collection cloth bag 703 away from the drying tower 701, an exhaust pipe 8 is fixedly connected to one side of the exhaust pipe 704 away from the collection cloth bag 703, liquid water glass is configured by the proportioning bin 6, and then is sent into the drying tower 701 for drying, and after the dried white carbon black powder is collected by the collection cloth bag 703, the dried white carbon black powder is discharged by the exhaust pipe 704 and the exhaust pipe 8.
Referring to fig. 6, a process for preparing white carbon black is characterized in that the preparation flow of white carbon black comprises: the preparation stage, the calcination section, the alkali dissolving section, the reaction section and the drying section.
Referring to fig. 6, the flow of the calcination section is: mixing sodium carbonate and quartz sand according to a proportion, putting the mixture into a calcining furnace, carrying out fusion reaction at a high temperature of 1300-1500 ℃, adopting purified gas stove gas as the fuel of the calcining furnace, cyclone settling and water seal purification of the gas stove gas, feeding the purified gas stove gas into a combustion chamber of the calcining furnace, recycling waste heat from a regenerative chamber of the calcining furnace, discharging the waste heat from a forty-five meter high chimney, spraying water and humidifying gas stove slag and dedusting ash, and then selling and comprehensively utilizing the waste heat and the dedusting ash;
the melt produced by the calcination reaction flows out of the furnace to a quenching tank, solid water glass is obtained after direct water spraying quenching, after the waste heat of the quenching waste water is recovered by a plate heat exchanger (indirect heat exchange is carried out on the quenching waste water and fresh water is heated and enters a hot water tank of a reaction section as reaction water), the reaction type in the calcination process is recycled, and the reaction formula is as follows: nNa2 CO3+mSiO2- & gt nNa O.mSiO2+nCO2 ≡.
Referring to fig. 6, the detailed flow of the alkali-dissolving section is: the quenched solid water glass is sent into a dissolving roller, steam and hot water are introduced into the dissolving roller for dissolution, liquid water glass is obtained, the liquid water glass is recycled by a buffer tank and a liquid discharge tank and then subjected to waste heat recovery by a plate heat exchanger (indirect heat exchange is carried out with fresh water, the heated fresh water enters the hot water tank to serve as dissolving water), and is pumped to a reaction section alkali storage tank for standby, the tube array heat exchanger is used for recycling the waste heat in an indirect heat exchange mode with the fresh water, and the heated fresh water enters the reaction section hot water tank to serve as reaction water, so that the cost and resources required by co-heating are reduced, and the produced calcium sulfate slag can be utilized in a selling mode and the like, thereby being beneficial to controlling the cost.
Referring to fig. 6, the detailed flow of the reaction section is: pumping liquid sodium silicate in an alkali storage tank into an alkali tank before configuration, pumping the alkali tank into a configuration tank before configuration, adding water to prepare the alkali tank to a proper concentration, and pumping the alkali tank after configuration for later use;
secondly, pumping the prepared liquid sodium silicate into a reactor, introducing steam and hot water, adding concentrated sulfuric acid, controlling certain process conditions for reaction to obtain qualified reaction slurry, recovering waste heat of the reaction slurry through a tube-in-tube heat exchanger (indirectly exchanging heat with fresh water, heating the fresh water, and feeding the heated fresh water into a hot water tank of a reaction section as reaction water), and feeding the reaction slurry into an intermediate tank for later use;
and finally, delivering the reaction slurry to a plate-and-frame filter press for filtering, washing and drying to form a white carbon black filter cake with the solid content of 20%, pulping the filter cake by a pulper, pumping a thick slurry tank of a drying section for standby, discharging filter press filtrate and washing wastewater after precipitation and neutralization treatment, and carrying out the comprehensive utilization of calcium sulfate slag generated by precipitation in an out-sale manner, wherein the reaction formula in the reaction process is as follows: nNa2 O.mSiO2+nH2SO4- > nNa2 SO4+mSiO2.nH2O.
Referring to fig. 6, the detailed flow of the reaction section is: pumping the white carbon black thick slurry in the thick slurry tank into a centrifugal nozzle of a drying tower, contacting with hot air from a hot blast stove in the drying tower, evaporating water to obtain qualified white carbon black, carrying out gas-solid separation by a cloth bag collector to recover a finished product, directly packaging and warehousing the finished product collected by the cloth bag collector, discharging tail gas discharged from the cloth bag collector by a 20-meter high-exhaust barrel, and returning finished product dust generated in the packaging process to the cloth bag collector;
after indirectly exchanging heat between a heat exchange chamber and cold air, flue gas generated in the coal burning process of the hot blast stove is discharged from a twenty-five meter high chimney after dust removal by a cloth bag, the hot blast stove cinder and dust removal dust collection dust are sold and comprehensively utilized after water spraying and humidification, the hot blast stove cinder and the dust removal dust collection dust removal dust are recycled after water spraying and humidification, the temperature of the stove cinder is reduced by water spraying, the condition that people are injured due to overhigh temperature during collection is prevented, and the stove cinder is recycled, so that the further control cost is facilitated, and the white carbon black with higher treatment is produced while the cost is as low as possible.
Working principle: s1, placing raw materials into a calciner 1 for calcination, wherein during calcination, gas in an air inlet chamber 301 is subjected to gas-solid separation through a separation chamber 302, then enters a filter box 202 through a gas outlet pipe 303, gas entering the filter box 202 is absorbed through solution in the filter box 202, and solid remained in the gas is subjected to secondary filtration through a filter plate 208 and then enters a combustion chamber 101 through a gas inlet pipe 201 for calcination;
s2, when the filter box 202 is cleaned, the turntable 204 is rotated, the turntable 204 rotates to drive the rotating screw 205 to rotate, the rotating screw 205 rotates to drive the rotary drum 206 to move, the rotary drum 206 moves to drive the filter plate 208 to move, and the filter plate 208 can be removed to clean after particles on the side wall of the filter box 202 are cleaned by the upward and downward movement of the filter plate 208;
s3, a melted material far away from the dissolving drum 401 is fed into the dissolving drum 401, an output mechanism 407 is started, the output mechanism 407 is started to drive a transmission gear 402 to rotate, the transmission gear 402 rotates to drive the dissolving drum 401 to rotate, raw materials in the dissolving drum 401 are fully mixed by rotation of the dissolving drum 401, after heat exchange is carried out on liquid flowing out of a water outlet pipe 503 through a heat exchange plate 501, the liquid enters the dissolving drum 401, after the reaction in the dissolving drum 401, the material flows out through a water outlet pipe 505, after the temperature of the material is reduced through the heat exchange plate 501, the material flows out through a waste water pipe 506;
s4, the substances flowing out of the waste water pipe 506 enter the proportioning box 6 for partner ratio reaction pulping, then are sent into the drying tower 701 for drying, the powder generated after drying is collected through the collecting cloth bag 703, and the gas is discharged through the exhaust funnel 8.
The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;
secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;
finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The white carbon black preparation equipment comprises a calciner (1), and is characterized by further comprising:
filtration mechanism (2): the device is arranged on the side surface of the calciner (1) and is fixedly connected with the calciner (1);
cyclone separator (3): the filter is arranged on the side surface of the filter mechanism (2) and is fixedly connected with the filter mechanism (2);
dissolution mechanism (4): is arranged at one side of the cyclone separator (3) far away from the calciner (1);
heat exchanger (5): the device is arranged on one side of the dissolving mechanism (4) far away from the filtering mechanism (2) and is fixedly connected with the dissolving mechanism (4);
proportioning box (6): is arranged at one side of the heat exchanger (5) far away from the dissolving mechanism (4);
drying mechanism (7): the heat exchanger is arranged on one side of the proportioning box (6) far away from the heat exchanger (5);
exhaust pipe (8): is arranged on the side surface of the drying mechanism (7) and is fixedly connected with the drying mechanism (7);
the calcining furnace (1) comprises a combustion chamber (101), a regenerator (102) is fixedly connected to the back of the combustion chamber (101), a gas inlet pipe (201) is fixedly connected to the side face of the combustion chamber (101), a box cover (203) is fixedly connected to the side face of the bottom end of the gas inlet pipe (201), a filter box (202) is fixedly connected to the bottom end of the box cover (203), a turntable (204) is movably connected to the top end of the box cover (203), a rotary screw (205) is fixedly connected to the bottom end of the turntable (204), a rotary drum (206) is connected to the middle thread of the side face of the rotary screw (205), a filter plate (208) is fixedly connected to the side face of the rotary screw (206), a limiting block (207) is fixedly connected to the bottom end of the side face of the filter box (202), a separation chamber (302) is fixedly connected to the bottom end of the gas outlet pipe (303), and a gas inlet chamber (301) is fixedly connected to the bottom end of the separation chamber (302).
The dissolving mechanism (4) comprises a dissolving roller (401), a transmission gear (402) is fixedly connected to the middle of the side face of the dissolving roller (401), an output mechanism (407) is connected to the outer edge of the transmission gear (402) in a transmission mode, the gears are meshed with each other, two ends of the side face of the dissolving roller (401) are fixedly connected with limiting rings (403), guide rails (404) are movably connected to the side face of the limiting rings (403), a connecting block (405) is fixedly connected to the side face of the guide rails (404), and a fixing plate (406) is fixedly connected to the bottom end of the connecting block (405);
the side fixedly connected with inlet tube (504) of dissolving cylinder (401), one side fixedly connected with heat transfer board (501) of dissolving cylinder (401) are kept away from to inlet tube (504), one side fixedly connected with outlet pipe (503) on heat transfer board (501) top, opposite side fixedly connected with waste pipe (506) on heat transfer board (501) top, one side fixedly connected with water tank (502) of heat transfer board (501) are kept away from to outlet pipe (503), bottom fixedly connected with waste pipe (506) of heat transfer board (501) side, one side fixedly connected with output mechanism (407) is kept away from with dissolving cylinder (401) waste pipe (506).
2. The apparatus for producing white carbon black according to claim 1, wherein: the side of proportioning box (6) is equipped with drying tower (701), the top fixedly connected with discharge pipe (702) of drying tower (701) side, the bottom fixedly connected with of discharge pipe (702) collects sack (703), collect one side fixedly connected with blast pipe (704) that drying tower (701) was kept away from to sack (703), one side fixedly connected with aiutage (8) that collection sack (703) was kept away from to blast pipe (704).
3. The process for preparing white carbon black by a white carbon black preparing apparatus according to claim 1, wherein the preparation flow of the white carbon black comprises: the preparation stage, the calcination section, the alkali dissolving section, the reaction section and the drying section.
4. A process for preparing white carbon black according to claim 3, wherein: the flow of the calcination section is as follows: mixing sodium carbonate and quartz sand according to a proportion, putting the mixture into a calcining furnace, carrying out fusion reaction at a high temperature of 1300-1500 ℃, adopting purified gas stove gas as the fuel of the calcining furnace, cyclone settling and water seal purification of the gas stove gas, feeding the purified gas stove gas into a combustion chamber of the calcining furnace, recycling waste heat from a regenerative chamber of the calcining furnace, discharging the waste heat from a forty-five meter high chimney, spraying water and humidifying gas stove slag and dedusting ash, and then selling and comprehensively utilizing the waste heat and the dedusting ash;
and (3) the melt produced by the calcination reaction flows out of the furnace to a quenching tank, solid water glass is obtained after direct water spray quenching, and after the waste heat of the quenching waste water is recovered by a plate heat exchanger, the waste heat is recycled, and the reaction formula in the calcination process is as follows:
nNa2CO3+mSiO2—→nNa2O·mSiO2+nCO2↑。
5. the process for preparing white carbon black according to claim 4, wherein: the detailed flow of the alkali dissolving section is as follows: the quenched solid water glass is sent into a dissolving roller, steam and hot water are introduced to dissolve the solid water glass, so that liquid water glass is obtained, and the liquid water glass is pumped to a reaction section alkali storage tank for standby after waste heat is recovered through a plate heat exchanger through a buffer tank and a liquid discharging tank.
6. The process for preparing white carbon black according to claim 5, wherein: the detailed flow of the reaction section is as follows: pumping liquid sodium silicate in an alkali storage tank into an alkali tank before configuration, pumping the alkali tank into a configuration tank before configuration, adding water to prepare the alkali tank to a proper concentration, and pumping the alkali tank after configuration for later use;
secondly, pumping the prepared liquid sodium silicate into a reactor, introducing steam and hot water, adding concentrated sulfuric acid, controlling certain process conditions to react to obtain qualified reaction slurry, and conveying the reaction slurry to an intermediate tank for standby after waste heat is recovered by a tube-in-tube heat exchanger;
and finally, delivering the reaction slurry to a plate-and-frame filter press for filtering, washing and drying to form a white carbon black filter cake with the solid content of 20%, pulping the filter cake by a pulper, pumping a thick slurry tank of a drying section for standby, discharging filter press filtrate and washing wastewater after precipitation and neutralization treatment, and carrying out the comprehensive utilization of calcium sulfate slag generated by precipitation in an out-sale manner, wherein the reaction formula in the reaction process is as follows: nNa2 O.mSiO2+nH2SO4- > nNa2 SO4+mSiO2.nH2O.
7. The process for preparing white carbon black according to claim 6, wherein: the detailed flow of the reaction section is as follows: pumping the white carbon black thick slurry in the thick slurry tank into a centrifugal nozzle of a drying tower, contacting with hot air from a hot blast stove in the drying tower, evaporating water to obtain qualified white carbon black, carrying out gas-solid separation by a cloth bag collector to recover a finished product, directly packaging and warehousing the finished product collected by the cloth bag collector, discharging tail gas discharged from the cloth bag collector by a 20-meter high-exhaust barrel, and returning finished product dust generated in the packaging process to the cloth bag collector;
after indirectly exchanging heat between a heat exchange chamber and cold air, flue gas generated in the coal burning process of the hot blast stove is discharged through a twenty-five meter high chimney after dust removal by a cloth bag, and coal cinder of the hot blast stove and dust removed dust ash collected by dust removal are sold for comprehensive utilization after water spraying and humidification.
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| CN101503193A (en) * | 2008-10-17 | 2009-08-12 | 株洲兴隆化工实业有限公司 | White carbon black drying system using fire coal circulating fluid bed hot-air furnace |
| CN202880907U (en) * | 2012-10-29 | 2013-04-17 | 无锡恒诚硅业有限公司 | Dried tail gas waste heat recovery system for white carbon black production |
| CN108017066A (en) * | 2017-12-27 | 2018-05-11 | 昌吉吉盛新型建材有限公司 | Utilize the high-purity white carbon and its production method of the production of industrial silicon by-product SILICA FUME |
| CN111498808A (en) * | 2020-04-29 | 2020-08-07 | 宁夏福泰硅业有限公司新材料分公司 | Gas-phase white carbon black tail gas treatment system and treatment method thereof |
| CN111924849A (en) * | 2020-08-13 | 2020-11-13 | 福建思科硅材料有限公司 | White carbon black production process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503193A (en) * | 2008-10-17 | 2009-08-12 | 株洲兴隆化工实业有限公司 | White carbon black drying system using fire coal circulating fluid bed hot-air furnace |
| CN202880907U (en) * | 2012-10-29 | 2013-04-17 | 无锡恒诚硅业有限公司 | Dried tail gas waste heat recovery system for white carbon black production |
| CN108017066A (en) * | 2017-12-27 | 2018-05-11 | 昌吉吉盛新型建材有限公司 | Utilize the high-purity white carbon and its production method of the production of industrial silicon by-product SILICA FUME |
| CN111498808A (en) * | 2020-04-29 | 2020-08-07 | 宁夏福泰硅业有限公司新材料分公司 | Gas-phase white carbon black tail gas treatment system and treatment method thereof |
| CN111924849A (en) * | 2020-08-13 | 2020-11-13 | 福建思科硅材料有限公司 | White carbon black production process |
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