CN115465887B - Charging system for chlorination furnace - Google Patents

Charging system for chlorination furnace Download PDF

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Publication number
CN115465887B
CN115465887B CN202211114313.0A CN202211114313A CN115465887B CN 115465887 B CN115465887 B CN 115465887B CN 202211114313 A CN202211114313 A CN 202211114313A CN 115465887 B CN115465887 B CN 115465887B
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bin
weighing
valve
pneumatic sealing
valves
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CN115465887A (en
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叶恩东
王建鑫
周丽
王东生
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Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
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Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/02—Halides of titanium
    • C01G23/022—Titanium tetrachloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/36—Arrangements of containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Furnace Details (AREA)

Abstract

The application discloses a charging system for a chlorination furnace. The system comprises: a raw material bin; the two weighing bins are connected with the raw material bin through the two first cut-off valves respectively; the conveying pump is configured to drive materials in the raw material bin into the weighing bin; the device comprises two cache storage bins, two second shut-off valves and two first pneumatic sealing valves, wherein the two cache storage bins are connected with two weighing storage bins through the two first pneumatic sealing valves and the two second shut-off valves in sequence respectively, and the two cache storage bins are positioned below the two weighing storage bins respectively; the device comprises a U-shaped valve and two second pneumatic sealing valves, wherein the two cache bins are respectively connected with the U-shaped valve through the two second pneumatic sealing valves, and the U-shaped valve is used for being connected with a chlorination furnace. The application can realize accurate, stable and continuous feeding, and can prevent gas in the chlorination furnace from flowing back to the feeding system.

Description

Charging system for chlorination furnace
Technical Field
The application relates to the technical field of chemical industry, in particular to a charging system for a chlorination furnace.
Background
The method comprises the steps of smelting vanadium titanomagnetite through a blast furnace to obtain titanium-containing blast furnace slag, carrying out high-temperature carbonization pretreatment on the blast furnace slag to obtain carbonized slag, and carrying out chlorination on the carbonized slag to obtain TiCl for preparing titanium pigment 4 . The carbonization slag is subjected to boiling chlorination in the chlorination furnace, and because the effective components in the carbonization slag are low, the amount of added raw materials is large, and in order to improve the chlorination efficiency, continuous, stable and accurate feeding is required to be carried out on the carbonization slag, so that the consumption of the carbonization slag is effectively matched with the consumption of chlorine.
In the prior art, a chlorination furnace charging system adopting a mode of a raw material bin, a bin pump, a high-level bin, belt scale metering, an intermediate buffer bin, a star feeder and a U-shaped valve is adopted. The charging system has the following problems:
according to the first aspect, the consumption of carbonized residues is only dynamically measured by the belt scales, the feeding quantity deviation is usually more than +/-10 percent, the maximum feeding quantity deviation reaches +/-50 percent, the two belt scales alternately operate, the stability is poor, the failure rate is high, and the switching is frequent; the fluctuation of the feeding amount of the carbonized slag is large, the accurate, stable and continuous feeding cannot be realized, the feeding amount of the carbonized slag is not matched with the circulating chlorine, and the continuous and stable operation of the system and the chlorination efficiency of the carbonized slag are greatly influenced.
In the second aspect, the tightness of the feeding system is poor, and only the U-shaped valve and the carbonized slag in the buffer storage bin are used for forming a material seal, so that when the belt scale is unsmooth in discharging, the buffer storage bin and the U-shaped valve are less in carbonized slag, cl in the furnace is easy to cause 2 、TiCl 4 And HCl and other gases back, which results in unsmooth feeding of the U-shaped valve and the carbonized slag in the middle bin, and environmental pollution and equipment corrosion caused by gas leakage in the furnace.
In the third aspect, the equipment failure rate of the charging system is high, the overhaul labor intensity is high, and the capacity is poor. The belt scale has the advantages of low metering precision, large fluctuation, difficult calibration, easy deviation, stacking and leakage, and easy blocking of the star feeder and TiCl reception 4 And the influence of condensation blockage, two sets of devices of the feeding system can not form one device, so that the feeding system has poor capacity and heavy maintenance tasks.
Disclosure of Invention
The main object of the present application is to provide a charging system for a chlorination furnace, which solves at least one aspect of the above technical problems.
According to one aspect of the present application, a charging system for a chlorination furnace is presented, comprising: a raw material bin; the two weighing bins are connected with the raw material bin through the two first cut-off valves respectively; the conveying pump is configured to drive materials in the raw material bin into the weighing bin; the device comprises two cache storage bins, two second shut-off valves and two first pneumatic sealing valves, wherein the two cache storage bins are connected with two weighing storage bins through the two first pneumatic sealing valves and the two second shut-off valves in sequence respectively, and the two cache storage bins are positioned below the two weighing storage bins respectively; the device comprises a U-shaped valve and two second pneumatic sealing valves, wherein the two cache bins are respectively connected with the U-shaped valve through the two second pneumatic sealing valves, and the U-shaped valve is used for being connected with a chlorination furnace.
According to one embodiment of the application, the system further comprises a plurality of flexible connectors, and two weighing bins are respectively mounted in the system through the plurality of flexible connectors.
According to one embodiment of the application, the flexible connection unit comprises a resilient member and/or a flexible member.
According to one embodiment of the application, the buffer bin is provided with a level gauge.
According to one embodiment of the application, the buffer bin is provided with an inert gas purging device and a bin rapping device.
According to one embodiment of the application, the loosening amount of the U-shaped valve is controlled to be 10-15 m 3 And/h, controlling the air conveying amount of the U-shaped valve to be 20-30 m 3 /h。
According to one embodiment of the application, the system further comprises: a control device configured to: and controlling the first cut-off valve corresponding to the weighing bin to be opened so as to feed the weighing bin based on the fact that the weight value detected by the weighing bin reaches a first preset value and the second cut-off valve corresponding to the weighing bin is in a closed state.
According to one embodiment of the application, the control device is configured to: and controlling the first cut-off valve corresponding to the weighing bin to be closed based on the weight value detected by the weighing bin reaching a second preset value.
According to one embodiment of the application, the control device is configured to: and closing the second cut-off valve and the first pneumatic sealing valve corresponding to the weighing bin based on the change value of the weight value detected by the weighing bin reaching an expected value.
According to an embodiment of the application, the control device is further configured to: and controlling the closing of any one of the second pneumatic sealing valves and the opening of the other second pneumatic sealing valve based on the fact that the opening time of any one of the second pneumatic sealing valves reaches the preset time, and controlling the opening of the second cut-off valve and the first pneumatic sealing valve corresponding to any one of the second pneumatic sealing valves.
According to the charging system for the chlorination furnace, disclosed by the embodiment of the application, the weighing bin is used for weighing materials, and adopts a static weighing mode, so that the accuracy is good, and the problems of low accuracy and poor stability caused by dynamic weighing of the belt scale can be avoided. The weighing bin, the buffer bin and the related cut-off valves and pneumatic sealing valves are all provided with two sets, so that alternate continuous feeding can be realized, the continuity and stability of feeding are ensured, and the capacity of protection can be improved. The pneumatic sealing valves are arranged at the feeding and discharging ends of the buffer storage bin, so that the pollution and corrosion of the gas in the chlorination furnace to related equipment caused by the back channeling of the gas to the weighing bin can be prevented.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic view of a charging system for a chlorination furnace according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the following embodiments of the present application will be described in further detail with reference to the accompanying drawings.
It should be noted that, in the embodiments of the present application, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present application, and the following embodiments are not described one by one.
Dynamic metering accuracy for a carbonization slag boiling chlorination feeding system is low, fluctuation is large, stability is poor, failure rate is high, switching is frequent, addition amount of carbonization slag is not matched with circulating chlorine, sealing performance of the feeding system is poor, and Cl in a furnace is easy to cause 2 、TiCl 4 And gas blowback such as HCl, which causes problems of poor feeding of the carbide slag, environmental pollution and corrosion of equipment, the present application proposes a charging system 100 for a chlorination furnace as will be described below, in order to provide a solution to the above problems.
Fig. 1 shows a schematic view of a charging system 100 for a chlorination furnace according to an embodiment of the present disclosure. As shown in fig. 1, the system 100 includes: a raw material bin 10; the two weighing bins 20 and 22 and the two first shut-off valves 30 and 32 are respectively connected with the raw material bin 10 through the two first shut-off valves 30 and 32; a transfer pump 40 configured to drive the material in the raw stock bin 10 into the weigh stock bins 20,22; the two buffer bins 50,52, the two second shut-off valves 60,62 and the two first pneumatic sealing valves 70,72, wherein the two buffer bins 50,52 are connected with the two weighing bins 20,22 through the two first pneumatic sealing valves 70,72 and the two second shut-off valves 60,62 in sequence respectively, and the two buffer bins 50,52 are positioned below the two weighing bins 20,22 respectively; the two buffer bins 50 and 52 are respectively connected with the U-shaped valve 80 through the two second pneumatic sealing valves 90 and 92, and the U-shaped valve 80 is used for being connected with the chlorination furnace 1.
In the embodiment of the application, a composite feeding mode of continuous high-concentration phase low-gas delivery of a U-shaped valve is realized by alternately batch-wise static weighing and closed storage bins, so that continuous stable closed accurate feeding of carbide slag can be realized, accurate metering of carbide slag is realized, a chlorination furnace is stably added, efficient matching and reaction are performed in the chlorination furnace, and the utilization efficiency of TiC and chlorine in the carbide slag is improved.
The system 100 may include two sets of closed weighing devices, which are outlined by dashed lines in fig. 1. The two closed weighing devices are identical to each other. The first set of airtight weighing device includes: the first shut-off valve 30, the weigh bin 20, the second shut-off valve 60, the first pneumatic seal valve 70, the buffer bin 50, and the second pneumatic seal valve 90. Similarly, the second set of closed weighing apparatus comprises: the first shut-off valve 32, the weigh bin 22, the second shut-off valve 62, the first pneumatic seal valve 72, the buffer bin 52, and the second pneumatic seal valve 92. The raw stock bin 10 is connected to the two first shut-off valves 30,32, and a transfer pump 40 is provided in the connection path between the raw stock bin 10 and the first shut-off valves 30, 32. Two second pneumatic sealing valves 90,92 are connected to the U-valve 80, and the U-valve 80 is connected to the chlorination furnace 1. The buffer bins 50,52 may be small volume constant volume bins with a constant amount of feed for each addition of the same material.
The design of the two sets of closed weighing devices enables the system 100 to realize alternate continuous feeding, and in the use process, the two sets of closed weighing devices are one by one and have good protective capability.
The weigh bin 20/22 may be a bin configured with a load cell. The weighing bin 20/22 adopts a static weighing mode, and the accuracy and stability of measurement are good. The corresponding weighing sensor can be selected according to the feeding precision requirement, so that high-precision accurate weighing can be realized, and the precision can reach kilogram level for example.
In an embodiment of the present application, the system 100 further includes a plurality of flexible connectors 42, and the two weigh bins 20,22 are each mounted in the system 100 via a plurality of flexible connectors 42. The weigh bin 20/22 may be independent from the loading system 100 via the flexible connection 42 to achieve accurate weighing. The flexible connection 42 may include elastic and/or flexible components such as cords, elastic strips, and the like.
In use, the system 100 is first loaded with a quantity of material into the weigh bin 20/22. The weighing bin 20/22 then provides the desired amount of material to the buffer bin 50/52, and the amount of material added can be controlled by controlling the reduction in the weight value detected by the weighing bin 20/22, thereby achieving accurate charging. The buffer bin 50/52 is arranged below the weighing bin 20/22, and after the second shut-off valve 60/62 and the first pneumatic sealing valve 70/72 are opened, the material can fall into the buffer bin 50/52 under the action of gravity.
When the symmetrical weight bin 20 is being charged, the first shut-off valve 30 is opened and the first shut-off valve 32 is closed. After the weigh bin 20 has completed charging, the first shut-off valve 30 is closed, at which point the first shut-off valve 32 may be opened to complete charging of the weigh bin 22. Meanwhile, after the weighing hopper 20 finishes charging, the second shut-off valve 60 and the first pneumatic sealing valve 70 may be opened to perform charging of the buffer hopper 50. Accordingly, after the weigh bin 22 has completed charging, the second shut-off valve 62 and the first pneumatic seal valve 72 may be opened to perform charging of the buffer bin 52.
After the desired amount of material is added to the buffer bin 50, the second pneumatic sealing valve 90 is opened, and the material in the buffer bin 50 can be stably added to the chlorination furnace 1 under the adjustment of the U-shaped valve 80. When the material in the buffer bin 50 is used up, the second pneumatic sealing valve 90 is closed timely, and the second pneumatic sealing valve 92 is opened, so that the material is fed into the chlorination furnace 1 from the buffer bin 52. In the process of charging the chlorination furnace 1 by the buffer bin 52, the second cut-off valve 60 and the first pneumatic sealing valve 70 are opened, and a new round of charging is performed on the buffer bin 50, so that the material of the buffer bin 52 is used up, and then the material is charged into the chlorination furnace 1 by the buffer bin 50 again. The chlorination furnace 1 is alternately charged through the two buffer bins 50 and 52, so that the charging continuity is ensured. The material quantity of the buffer bin 50/52 can be accurately provided through the weighing bin 20/22, so that accurate, stable and continuous feeding to the chlorination furnace 1 is realized.
The second pneumatic sealing valve 90/92 is arranged between the cache bin 50/52 and the U-shaped valve 80, namely on the discharging pipeline of the cache bin 50/52, so that effective separation between the cache bin 50/52 and the U-shaped valve 80 and effective separation between the cache bin 50/52 and the chlorination furnace 1 can be realized. The first pneumatic sealing valve 70/72 is arranged between the buffer bin 50/52 and the weighing bin 20/22, i.e. on the feeding line of the buffer bin 50/52, so that effective separation of the buffer bin 50/52 and the weighing bin 20/22 can be realized. Thereby multiple guarantee chlorination furnace 1 and weighing bin 50/52 can be effectively cut off at any moment, stop the poisonous and harmful gas in chlorination furnace 1 to back to weighing bin 50/52 and scurry. When the second pneumatic sealing valve 90/92 is opened to feed the chlorination furnace 1, the first pneumatic sealing valve 70/72 can function to block the buffer bin 50/52 from the weigh bin 20/22, preventing the chlorination furnace gas from entering the weigh bin 20/22.
In some embodiments, the cache bins 50,52 are configured with level gauges. The material level meter can accurately feed back the material quantity, the feeding speed, the feeding stability and the like. The U-shaped valve 80 can be adjusted according to the feedback result of the level gauge, so that the material stably enters the chlorination furnace 1.
In some embodiments, the buffer bins 50,52 are configured with an inert gas purge device and a bin rapping device. In the later stage of feeding, the feeding amount of the materials can be influenced, and the feeding amount of the materials can be kept stable through an inert gas purging device and a bin vibrating device. The purge gas is selected on the principle of non-reaction with the starting materials and products, preferably nitrogen.
The U-shaped valve 80 can realize balanced and stable material feeding into the chlorination furnace 1, can provide a certain sealing effect, and can prevent the gas in the chlorination furnace 1 from flowing backwards and leaking to the feeding system. Meanwhile, the U-shaped valve 80 can also realize that materials are added into the chlorination furnace 1 under the condition of small air quantity (compared with pneumatic conveying equipment such as FK pumps and the like, which can be reduced by 1-2 orders of magnitude), so that the boiling chlorination and TiCl of air can be greatly reduced 4 The pressure caused by the collecting and tail gas treatment system promotes the chlorination furnace and TiCl 4 And (5) collecting and operating stability of the tail gas treatment system.
The inventor of the application realizes that, due to the high requirement of the boiling chlorination furnace on the gas quantity, when the gas quantity is increased, a large amount of fine-particle carbonized residues are taken out of the chlorination furnace along with the gas, so that a larger burden is brought to cyclone and dust removal, and the chlorination effect of the carbonized residues is influenced. At the same time, a larger amount of inert gas dilutes TiCl 4 Content of TiCl 4 The leaching trapping and the tail gas treatment increase larger load, and reduce the economy of the whole process. Therefore, the FK pump and the pulse bin pump of the pneumatic conveying equipment are not suitable for directly adding the carbonization slag into the chlorination furnace. The application avoids the problem of larger air delivery capacity by adopting the U-shaped valve.
In the embodiment of the application, the loosening amount of the U-shaped valve 80 is controlled to be 10-15 m 3 The air delivery amount of the U-shaped valve 80 is controlled to be 20-30 m 3 And/h. On the one hand, the flow of the material is ensured, and on the other hand, boiling chlorination and TiCl caused by overlarge gas quantity are avoided 4 The collection and exhaust treatment system creates pressure.
The system 100 may implement a degree of automation control. In some embodiments, the system 100 further comprises: a control device configured to: based on the weight value detected by the weigh bin 20/22 reaching a first preset value and the second shut-off valve 60/62 corresponding to the weigh bin 20/22 being in a closed state, the first shut-off valve 30/32 corresponding to the weigh bin 20/22 is controlled to open to charge the weigh bin 20/22.
The charging of the weigh bin 20/22 may be performed automatically when there is less material in the weigh bin 20/22 and, when charging the weigh bin 20/22, ensure that the weigh bin 20/22 is not charging the corresponding buffer bin 50/52 in case of charging inaccuracy. The first preset value may be 30 tons.
In some embodiments, the control device is configured to: the first shut-off valve 30/32 corresponding to the weigh bin 20/22 is controlled to be closed based on the weight value detected by the weigh bin 20/22 reaching a second preset value. The addition may be automatically ended when a sufficient amount of material is added to the weigh bin 20/22. The second preset value may be 80 tons.
In some embodiments, the control device is configured to: the second shut-off valve 60/62 and the first pneumatic sealing valve 70/72 corresponding to the weigh bin 20/22 are closed based on the change value of the weight value detected by the weigh bin 20/22 reaching a desired value. Thereby automatically adding the expected amount of material to the buffer bin 50/52 according to the change value of the weight value detected by the weighing bin 20/22, and realizing accurate feeding.
In some embodiments, the control device is further configured to: based on the opening time of any one of the second air-operated seal valves 90/92 reaching a preset time, any one of the second air-operated seal valves 90/92 is controlled to be closed, and the other second air-operated seal valve 90/92 is controlled to be opened, and the second shut-off valve 60/62 and the first air-operated seal valve 70/72 corresponding to any one of the second air-operated seal valves 90/92 are controlled to be opened. Thereby automatically realizing alternating and continuous feeding. The time for charging the chlorination furnace 1 for each of the buffer bins 50/52 may be preset, and when the opening time of the second pneumatic sealing valve 90/92 reaches the preset time, it may be determined that the buffer bin 50/52 finishes charging the chlorination furnace 1. The preset time may be 35 minutes.
According to the description, the feeding system 100 of the embodiment of the application can realize airtight, continuous, stable and accurate feeding in the boiling chlorination process of the carbonized slag, and can realize effective separation of the chlorination furnace and the main storage bin by optimizing the metering mode of the carbonized slag and the feeding equipment structure of the carbonized slag and adjusting the conveying process of the carbonized slag, and can accurately meter the carbonized slag, realize continuous, stable and accurate feeding of the carbonized slag into the chlorination furnace by controlling the conveying gas quantity under the airtight system, thereby effectively improving the comprehensive chlorination effect of titanium element in the carbonized slag. The charging system 100 of the present application also has the advantages of simplicity, reliability, good continuous stability, high efficiency, small floor space, low energy consumption, large processing capacity, etc.
The following description is made with reference to specific examples.
Example 1
This example is for industrial application, tiCl is prepared by low temperature chlorination of carbon residue in climbing steel 4 Implemented on the production line, the charging system mainly includes: 400 tons of large raw material bins 1, bin type conveying pumps 1, two sets of closed weighing devices (each set of device comprises 120 tons of weighing bins 1, 10 tons of buffer bins 1 and matched shut-off valves and pneumatic sealing valves, and the two sets of devices are respectively numbered A, B) and fluidized U-shaped valves 1. The two closed weighing devices are alternately used to realize continuous and stable carbonization feeding, and the feeding amount is 12-20 t/h.
The carbonized slag is blast furnace slag of iron works # 1 of Pan Steel group company, and is reduced at high temperature by a carbonization electric furnace, crushed and ground into 60-1000 meshes of carbonized slag. The typical particle size distribution is shown in Table 1.
TABLE 1 typical particle size distribution/%
The specific process of boiling chlorination continuous stable closed feeding of the carbide slag comprises the following steps:
1. the carbonized slag (carbonized slag finished product) which is subjected to high-temperature carbonization reduction, crushed and ground into 60-1000 meshes is transported to a low-boiling chlorination production site through a tank car, and is pumped to a large raw material bin for standby by the car.
2. Sending carbonized slag into an A high-position weighing bin through a bin pump, opening an A bin top cut-off valve to start feeding carbonized slag into the A high-position weighing bin, weighing the carbonized slag at the same time, closing the A bin top cut-off valve after the weight of the A high-position weighing bin reaches 80 tons, and opening a B bin item cut-off valve to feed carbonized slag into a B high-position weighing bin; a high-order weighing bin is reserved for standby. Stopping the bin pump when the weight of the B high-position weighing bin reaches 80 tons, and keeping the B high-position weighing bin for later use. Restarting a bin pump to supplement carbide slag to the high-position weighing bin when carbide slag in the high-position weighing bin A and the high-position weighing bin B is smaller than 30 tons, and ensuring that the weighing bin does not feed the corresponding cache bin when the carbide slag is added. The weight of the A, B weighing bin carbonized slag is always kept at 30-80 t during operation.
3. And (5) accurately reading the weight 85.647t of the carbonized slag after the high-order weighing bin does not feed the carbonized slag any more. And sequentially opening the A feeding cut-off valve and the A1 pneumatic sealing valve to feed the A cache storage bin, and closing the A feeding cut-off valve and the A1 pneumatic sealing valve after the A cache storage bin is determined to be full according to the A cache storage bin level gauge. And accurately calculating the weight of the carbide slag of the buffer storage bin 9.7512 t according to the weight reduction of the weighing storage bin, and adding the carbide slag into the buffer storage bin A for 3-5 min to finish.
4. And opening an A2 pneumatic sealing valve to add the carbonized residues into the fluidization U-shaped valve, opening the fluidization U-shaped valve to loosen air and convey air, and starting to feed the carbonized residues into the chlorination furnace. Judging the stability of feeding the carbide slag according to the reading of a charge level indicator of the buffer storage bin, adjusting the loosening gas and the gas conveying quantity of the fluidized U-shaped valve, keeping the feeding time of each batch of the buffer storage bin at 35min, and controlling the loosening gas quantity at 10-15 m 3 And/h, the gas conveying capacity is 20-30 m 3 And/h, determining the opening of the fluidized U-shaped valve loosening gas and the conveying gas valve according to the regulated gas quantity and fixing the opening of the fluidized U-shaped valve loosening gas and the conveying gas valve.
5. And in the later period of feeding, starting a buffer storage bin vibrator, and properly adding a small amount of purge gas to keep the feeding amount of the carbide slag stable. And (3) closing an A2 pneumatic sealing valve after the carbonization slag is added into the A buffer storage bin, ensuring that the chlorination furnace and the A weighing system are completely disconnected, completing the addition of the carbonization slag in the A weighing system, and repeating the operation steps 3 and 4 after the next round of weighing. And (3) closing a pneumatic sealing valve of the weighing system B2 during the process of adding carbonized residues by the weighing system A, and completing disconnection of the chlorination furnace and the weighing system B.
6. During the period that the weighing system A adds carbide slag to the chlorination furnace, the weighing system B starts to add carbide slag to the cache storage bin B, and the operation is as follows: and B, the high-order weighing bin does not feed carbide slag any more, and the weight 83.129t of the carbide slag is accurately read. And sequentially opening the B feeding cut-off valve, feeding the carbonization slag to the B cache bin by using the B1 pneumatic sealing valve, and closing the B feeding cut-off valve after the B cache bin is determined to be full according to the B cache bin level gauge, wherein the B1 pneumatic sealing valve is arranged on the B cache bin. And accurately calculating the weight 9.773t of the carbonized slag of the buffer storage bin for standby according to the weight reduction of the weighing storage bin, and adding the carbonized slag into the buffer storage bin B for 3-5 min to finish.
7. And after the carbonization slag of the weighing and buffering storage bin A is added, a pneumatic sealing valve B2 is opened in time to add the carbonization slag in the weighing and buffering storage bin B into the fluidization U-shaped valve, and the carbonization slag is continuously and stably fed into the chlorination furnace. Judging the stability of carbide slag feeding according to the reading of a buffer storage bin level gauge, and controlling the loosening air quantity of the fluidization U-shaped valve to be 10-15 m 3 And/h, the gas conveying capacity is 20-30 m 3 And (h) starting a buffer bin vibrator B in the later feeding period, and properly adding a small amount of purge gas to keep the addition amount of the carbide slag stable. And after the carbonization slag is added into the B cache bin, closing the B2 pneumatic sealing valve to ensure that the chlorination furnace and the B weighing system are completely disconnected. And when the carbonization slag of the B cache bin is added, the A cache bin also completes the addition of the carbonization slag, and the A2 pneumatic sealing valve is opened timely to add the carbonization slag into the fluidization U-shaped valve to continuously feed the carbonization slag into the chlorination furnace.
At the moment, the carbonization slag boiling chlorination feeding system finishes continuous and stable sealing feeding of the carbonization slag for one round.
Those of ordinary skill in the art will appreciate that: the above discussion of any embodiment is merely exemplary and is not intended to imply that the scope of the disclosure of embodiments of the application, including the claims, is limited to such examples; combinations of features of the above embodiments or in different embodiments are also possible within the idea of an embodiment of the application, and there are many other variations of the different aspects of the embodiments of the application as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, and the like, which are made within the spirit and principles of the embodiments of the application, are included within the scope of the embodiments of the application.

Claims (10)

1. A charging system for a chlorination furnace, comprising:
a raw material bin;
the two weighing bins are connected with the raw material bin through the two first cut-off valves respectively; the weighing bin is a bin provided with a weighing sensor;
the conveying pump is configured to drive materials in the raw material bin into the weighing bin;
the device comprises two cache storage bins, two second shut-off valves and two first pneumatic sealing valves, wherein the two cache storage bins are connected with two weighing storage bins through the two first pneumatic sealing valves and the two second shut-off valves in sequence respectively, and the two cache storage bins are positioned below the two weighing storage bins respectively;
the device comprises a U-shaped valve and two second pneumatic sealing valves, wherein the two cache bins are respectively connected with the U-shaped valve through the two second pneumatic sealing valves, and the U-shaped valve is used for being connected with a chlorination furnace.
2. The system of claim 1, further comprising a plurality of flexible connectors, two of the weigh bins being mounted in the system by the plurality of flexible connectors, respectively.
3. The system of claim 2, wherein the flexible connection comprises a resilient member and/or a flexible member.
4. The system of claim 1, wherein the cache silo is configured with a level gauge.
5. The system according to claim 1, wherein the buffer bin is provided with an inert gas purge device and a bin rapping device.
6. The system according to claim 1, wherein the loosening amount of the U-shaped valve is controlled to be 10-15 m 3 And/h, controlling the air conveying amount of the U-shaped valve to be 20-30 m 3 /h。
7. The system of claim 1, further comprising: a control device configured to:
and controlling the first cut-off valve corresponding to the weighing bin to be opened so as to feed the weighing bin based on the fact that the weight value detected by the weighing bin reaches a first preset value and the second cut-off valve corresponding to the weighing bin is in a closed state.
8. The system of claim 7, wherein the control device is configured to:
and controlling the first cut-off valve corresponding to the weighing bin to be closed based on the weight value detected by the weighing bin reaching a second preset value.
9. The system of claim 7, wherein the control device is configured to:
and closing the second cut-off valve and the first pneumatic sealing valve corresponding to the weighing bin based on the change value of the weight value detected by the weighing bin reaching an expected value.
10. The system of claim 7, wherein the control device is further configured to:
and controlling the closing of any one of the second pneumatic sealing valves and the opening of the other second pneumatic sealing valve based on the fact that the opening time of any one of the second pneumatic sealing valves reaches the preset time, and controlling the opening of the second cut-off valve and the first pneumatic sealing valve corresponding to any one of the second pneumatic sealing valves.
CN202211114313.0A 2022-09-14 2022-09-14 Charging system for chlorination furnace Active CN115465887B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106082316A (en) * 2016-08-19 2016-11-09 云南冶金新立钛业有限公司 Titanium Dioxide Produced by Chloride Procedure boiling chloridizing furnace feed arrangement
CN111495283A (en) * 2020-04-28 2020-08-07 河南佰利联新材料有限公司 Continuous vertical feeding system and method for fluidized bed reactor
CN114259930A (en) * 2022-01-28 2022-04-01 锦州金业化冶技术有限公司 Raw material batching and feeding system and method for boiling chlorination process by using same
CN216336633U (en) * 2021-10-26 2022-04-19 河北吉诚新材料有限公司 Chlorination furnace feed system
CN216727010U (en) * 2022-01-28 2022-06-14 锦州金业化冶技术有限公司 Raw material batching feeding system in boiling chlorination technology

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106082316A (en) * 2016-08-19 2016-11-09 云南冶金新立钛业有限公司 Titanium Dioxide Produced by Chloride Procedure boiling chloridizing furnace feed arrangement
CN111495283A (en) * 2020-04-28 2020-08-07 河南佰利联新材料有限公司 Continuous vertical feeding system and method for fluidized bed reactor
CN216336633U (en) * 2021-10-26 2022-04-19 河北吉诚新材料有限公司 Chlorination furnace feed system
CN114259930A (en) * 2022-01-28 2022-04-01 锦州金业化冶技术有限公司 Raw material batching and feeding system and method for boiling chlorination process by using same
CN216727010U (en) * 2022-01-28 2022-06-14 锦州金业化冶技术有限公司 Raw material batching feeding system in boiling chlorination technology

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