CN113108609A - Automatic charging system of chlorination furnace and control method thereof - Google Patents
Automatic charging system of chlorination furnace and control method thereof Download PDFInfo
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- CN113108609A CN113108609A CN202110452729.2A CN202110452729A CN113108609A CN 113108609 A CN113108609 A CN 113108609A CN 202110452729 A CN202110452729 A CN 202110452729A CN 113108609 A CN113108609 A CN 113108609A
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- 238000005660 chlorination reaction Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005303 weighing Methods 0.000 claims abstract description 126
- 238000007599 discharging Methods 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims description 56
- 238000001514 detection method Methods 0.000 claims description 30
- 238000005243 fluidization Methods 0.000 claims description 28
- 238000005192 partition Methods 0.000 claims description 28
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 238000003860 storage Methods 0.000 claims description 17
- 238000013329 compounding Methods 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 11
- 230000003111 delayed effect Effects 0.000 claims description 10
- 230000001502 supplementing effect Effects 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000005273 aeration Methods 0.000 claims description 2
- 238000012790 confirmation Methods 0.000 claims description 2
- 239000013589 supplement Substances 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 31
- 238000000926 separation method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0084—Charging; Manipulation of SC or SC wafers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
- F27D2019/004—Fuel quantity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention discloses an automatic charging system of a chlorination furnace and a control method thereof. The automatic charging system of the chlorination furnace provided by the invention has the advantages that the whole feeding process is controlled and completed by the PLC, manual feeding is not needed, and the problems of ash pipe blockage and the like can be solved. In addition, due to the interlocking control of the opening degree of each bin weighing sensor and the discharging ball valve and the PID loop formed by the opening degree of the nitrogen flow meter and the main conveying air valve, the feeding amount and the air supply amount can be accurately and effectively controlled.
Description
Technical Field
The invention relates to an automatic charging system of a chlorination furnace and a control method thereof, belonging to the technical field of chemical equipment.
Background
At present, chlorination furnace charging system generally adopts crude and crude perpendicular unloading form reinforced in the domestic market, and control is not accurate, leads to the transportation volume to be neglected little, and the transportation volume has been little the waste that causes chlorine, and the transportation volume has been big the production chemical replacement reaction that can not be timely, has decisive influence etc. to the stable security of chlorination furnace, the quality of product and wasting of resources. In addition, the feeding system on the market mostly adopts the manual supervision electric control mode, feeds the hopper by manual operation button switch control spiral promptly, in case the hopper is full, must manual operation again and stop the material, needs estimate the measurement to the reinforced volume in addition. The manual mode has the advantages that people must be asked to stay beside the charging machine all the time and cannot leave, otherwise, once an empty bucket appears, normal reaction in the furnace is affected, chlorine gas can be emitted to pollute the environment, the environment beside the charging machine of the chlorination furnace is very severe, and high temperature, dust, harmful gas and the like can greatly affect the human body. Therefore, the invention is very necessary to develop an automatic charging system of the chlorination furnace.
Disclosure of Invention
The invention aims to provide an automatic charging system of a chlorination furnace and a control method thereof, wherein the automatic charging system is accurate in control, safe and reliable and integrates automation and intellectualization.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
an automatic charging system of a chlorination furnace comprises: mixing device, upper high-pressure bin pressure transmitter, upper high-pressure bin exhaust valve, upper balance valve, partition air valve, partition valve, chlorination furnace, upper high-pressure bin weighing sensor, upper high-pressure bin discharge valve, lower high-pressure bin feed valve, lower high-pressure bin pressure transmitter, lower balance valve, lower high-pressure bin weighing sensor, lower high-pressure bin low level gauge, PLC controller, lower high-pressure bin, discharge regulating ball valve, ash pipe pressure transmitter, main conveying regulating air valve, flowmeter, air source pressure transmitter, air storage tank, lower high-pressure bin fluidizing air valve, lower high-pressure bin aeration valve, lower high-pressure bin release valve, flexible connection exhaust valve, upper high-pressure bin fluidizing air valve, upper high-pressure bin pressurizing air valve, upper high-pressure bin feed valve, upper high-pressure bin pre-partition valve, chlorination furnace pressure transmitter, H-101 bin, H-102 bin, H-103 bin, weighing spiral bin, The device comprises a pneumatic butterfly valve, an HP-101 weighing hopper, an HP-102 weighing hopper, an HP-103 weighing hopper, a hopper weighing sensor, a high material level sensor of a mixing device and a low material level sensor of the mixing device.
The discharge hole of the H-101 bin is communicated with the feed inlet of the HP-101 weighing hopper, the discharge hole of the H-102 bin is communicated with the feed inlet of the HP-102 weighing hopper, the discharge hole of the H-103 bin is communicated with the HP-103 weighing hopper, the discharge holes of the H-101 bin, the H-102 bin and the H-103 bin are respectively provided with the weighing screw and the pneumatic butterfly valve, the HP-101 weighing hopper, the HP-102 weighing hopper and the HP-103 weighing hopper are respectively provided with the weighing sensor, and the discharge holes of the HP-101 weighing hopper, the HP-102 weighing hopper and the HP-103 weighing hopper are respectively provided with the pneumatic butterfly valve and are communicated with the feed inlet of the mixing device.
The material mixing device is provided with a high material level sensor and a low material level sensor, the discharge port of the material mixing device is communicated with the feed port of the upper high-pressure bin, and the discharge port of the material mixing device is sequentially provided with a pre-closing valve and a feed valve of the upper high-pressure bin between the feed port of the upper high-pressure bin.
The high-pressure bin comprises an upper high-pressure bin and a lower high-pressure bin, and is characterized in that the upper high-pressure bin is internally provided with a weighing sensor, the upper high-pressure bin is provided with a pressure transmitter, a discharge port of the upper high-pressure bin is communicated with a feed port of the lower high-pressure bin, the discharge port of the upper high-pressure bin is provided with a discharge valve of the upper high-pressure bin, and the feed port of the lower high-pressure bin is provided with a feed valve of.
The chlorination furnace comprises a chlorination furnace, a high-pressure bin, a low-pressure bin, a high-pressure bin, a discharge port of the low-pressure bin, a discharge adjusting ball valve, an ash pipe and a partition valve, wherein the high-pressure bin is arranged in the low-pressure bin, the low-pressure bin and the high-pressure bin are arranged in the low-pressure bin, the discharge adjusting ball valve is arranged at a discharge port of the low-pressure.
The outlet of the gas storage tank is provided with the flowmeter and the gas source pressure transmitter, and is respectively communicated with the gas inlet of the upper high-pressure chamber through the upper high-pressure chamber fluidization gas valve and the upper high-pressure chamber pressurization gas valve, communicated with the gas inlet of the lower high-pressure chamber through the lower high-pressure chamber fluidization gas valve, communicated with the gas supplementing port of the lower high-pressure chamber through the lower high-pressure chamber gas supplementing valve, communicated with the feed inlet of the chlorination furnace through the partition gas valve, and communicated with the outlet of the discharging adjusting ball valve through the main conveying adjusting gas valve. And nitrogen in the gas storage tank is used as main conveying gas.
The upper high-pressure bin fluidization air valve and the lower high-pressure bin fluidization air valve can prevent materials from hardening after being opened.
The upper high-pressure bin is communicated with the material mixing device through the upper high-pressure bin exhaust valve, the upper high-pressure bin is further provided with the upper balance valve, the lower high-pressure bin is provided with the lower balance valve, the upper balance valve and the lower balance valve are communicated with an inlet of the flexible connection exhaust valve, the lower high-pressure bin is further provided with the lower high-pressure bin release valve, and an outlet of the flexible connection exhaust valve and an outlet of the lower high-pressure bin release valve are communicated with the H-101 bin.
The upper high-pressure bin pressure transmitter, the upper high-pressure bin exhaust valve, the upper balance valve, the partition air valve, the partition valve, the upper high-pressure bin weighing sensor, the upper high-pressure bin discharge valve, the lower high-pressure bin feed valve, the lower high-pressure bin pressure transmitter, the lower balance valve, the lower high-pressure bin weighing sensor, the lower high-pressure bin low level gauge, the discharge adjusting ball valve, the ash pipe pressure transmitter, the main conveying adjusting air valve, the flowmeter, the air source pressure transmitter, the lower high-pressure bin fluidizing air valve, the lower high-pressure bin air replenishing valve, the lower high-pressure bin release valve, the flexible connection exhaust valve, the upper high-pressure bin fluidizing air valve, the upper high-pressure bin pressurizing air valve, the upper high-pressure bin feed valve, the upper high-pressure bin pre-partition valve, the chlorination furnace pressure transmitter, the weighing spiral, The pneumatic butterfly valve the hopper weighing sensor, the high material level sensor of compounding device with the low material level sensor of compounding device all with the PLC controller is connected. The transmitter, the flowmeter and the level indicator feed detected signals back to the PLC in time, and the PLC controls opening and closing of a valve.
Further, still include manual push-pull valve, manometer, relief valve, check valve, gas holder manual regulation pneumatic valve, manual regulation pneumatic valve and ejection of compact manual regulation valve, manual push-pull valve sets up the discharge gate of compounding device, and is located go up high-pressure storehouse partition valve upper reaches in advance, manometer and relief valve set up go up high-pressure storehouse top, gas holder manual regulation pneumatic valve sets up the export of gas holder is located flowmeter with air supply pressure transmitter upper reaches, the export setting of low high-pressure storehouse ejection of compact manual regulation valve is located ejection of compact regulation ball valve upper reaches, the air inlet of low high-pressure storehouse still passes through manual regulation pneumatic valve with the export intercommunication of ejection of compact manual regulation valve, go up high-pressure storehouse with the air inlet of low high-pressure storehouse still is equipped with the check valve. When the material flows out from the lower high-pressure bin, the material is accumulated at a discharge hole of the lower high-pressure bin due to sudden pressure loss, and the lower high-pressure bin fluidization air valve and a branch at the upper end of the discharge adjusting ball valve can supplement air in time, so that the material accumulation caused by the pressure loss is prevented.
The control method of the automatic charging system of the chlorination furnace comprises the steps of charging, mixing, feeding, pouring and feeding.
The charging comprises: the manual valve in the confirmation system comprises the manual gate valve, the manual air storage tank adjusting valve, the manual air adjusting valve and the manual discharging adjusting valve, all the electric control valves comprise the upper high-pressure bin exhaust valve, the upper balance valve, the partition air valve, the isolating valve, the upper high-pressure bin discharge valve, the lower high-pressure bin feed valve, the lower balance valve, the discharging adjusting ball valve, the main conveying adjusting air valve, the lower high-pressure bin fluidizing air valve, the lower high-pressure bin air supplementing valve, the lower high-pressure bin release valve, the soft connection exhaust valve, the upper high-pressure bin fluidizing air valve, the upper high-pressure bin pressurizing air valve, the upper high-pressure bin feed valve, the upper high-pressure bin pre-isolating valve, the pneumatic butterfly valve and the hopper weighing sensor are in a closed state, and then the H-101 bin, the hopper weighing sensor are in a closed state, The H-102 silo and the H-103 silo are charged with various materials.
The mixing comprises the following steps: opening the pneumatic butterfly valve, conveying the materials which are respectively arranged in the H-101 bin, the H-102 bin and the H-103 bin to the mixing device for mixing through the respective weighing screw, the respective HP-101 weighing hopper, the HP-102 weighing hopper and the HP-103 weighing hopper according to a set proportion, and closing the pneumatic butterfly valve when the high material level sensor of the mixing device detects that the mixing device is full of materials.
The feeding comprises the following steps: when the detection value of the upper high-pressure bin weighing sensor is lower than a set lower limit, the upper high-pressure bin exhaust valve is opened, when the upper high-pressure bin pressure transmitter detects that the pressure is lower than a set value, the upper high-pressure bin feed valve is opened, the upper high-pressure bin pre-closing valve is opened in a delayed mode, the upper high-pressure bin fluidization air valve is opened, materials in the mixing device enter the upper high-pressure bin, and when the detection value of the upper high-pressure bin weighing sensor reaches the set upper limit, the upper high-pressure bin pre-closing valve and the upper high-pressure bin fluidization air valve are closed in sequence, and the upper high-pressure bin feed valve and the upper high-pressure bin exhaust valve are closed in a.
The material pouring comprises the following steps: when the detection value of the lower high-pressure bin weighing sensor is lower than a set lower limit or the lower high-pressure bin low level gauge detects that the lower high-pressure bin is empty, closing the flexible connection exhaust valve, simultaneously opening the upper high-pressure bin pressurization air valve, closing the upper high-pressure bin pressurization air valve when the detection value of the upper high-pressure bin pressure transmitter is greater than or equal to the detection value of the lower high-pressure bin pressure transmitter, opening the lower balance valve and opening the upper balance valve in a delayed manner, opening the lower high-pressure bin feed valve and the upper high-pressure bin discharge valve in a delayed manner, opening the upper high-pressure bin fluidization air valve, and closing the upper high-pressure bin fluidization air valve, the upper high-pressure bin discharge valve, the lower high-pressure bin feed valve, the lower balance valve and the upper balance valve in sequence when the detection value of the lower high-pressure bin weighing sensor reaches a set value or the set feed time, and opening the flexible connection exhaust valve.
The feeding comprises the following steps: opening the partition air valve and the main conveying adjusting air valve, when the detection value of the ash pipe pressure transmitter is more than or equal to the detection value of the chlorination furnace pressure transmitter, sequentially opening the lower high-pressure bin air supplementing valve and the lower high-pressure bin fluidizing air valve, when the detection value of the lower high-pressure bin pressure transmitter reaches a set value, opening the partition valve and the discharging adjusting ball valve, closing the partition air valve, when the detection value of the lower high-pressure bin weighing sensor is lower than a set lower limit or the lower high-pressure bin low level gauge detects that the lower high-pressure bin is empty, opening the partition air valve, then closing the discharging adjusting ball valve and the main conveying adjusting air valve, and then closing the partition air valve.
And further, during feeding, constantly detecting the state of the ash pipe, judging whether the ash pipe is blocked or not, judging that the ash pipe is blocked when the ash pipe pressure transmitter is abnormally increased, opening the blocking air valve, then closing the discharging adjusting ball valve, simultaneously fully opening the main conveying adjusting air valve, feeding materials blocked by the ash pipe into the chlorination furnace, then closing the blocking air valve, and opening the discharging adjusting ball valve to recover normal feeding.
Further, the system is operated to start when the air source pressure transmitter is higher than a set lower limit, otherwise the system is not allowed to start.
Further, the main conveying regulating air valve and the flowmeter form a PID regulating loop, and the opening degree of the main conveying regulating air valve is regulated in real time according to the set air quantity.
Further, the discharging adjusting ball valve and the lower high-pressure bin weighing sensor form a PID adjusting loop, instantaneous flow is calculated according to the change value of the lower high-pressure bin weighing sensor, and the opening of the discharging adjusting ball valve is adjusted in real time according to the instantaneous flow.
The invention has the advantages and beneficial effects that:
1. the automation degree is high, and the control is accurate.
The whole feeding process is controlled and completed by the PLC controller, manual feeding is not needed, and the problems of ash pipe blockage and the like can be solved. In addition, due to the interlocking control of the opening degree of each bin weighing sensor and the discharging ball valve and the PID loop formed by the opening degree of the nitrogen flow meter and the main conveying air valve, the feeding amount and the air supply amount can be accurately and effectively controlled.
2. The transportation is stable, and the tempering can be effectively prevented.
The series of hoses are connected, and the time delay between the upper balance valve and the lower balance valve is opened and closed, so that the air pressure of each storage bin is kept stable during feeding and discharging, and the storage bin is effectively prevented from losing pressure in the conveying process. The high-pressure bin and the positive-pressure conveying mode are adopted, and the air valve branch is cut off, so that the tempering phenomenon of the chlorination furnace is effectively prevented.
3. Simple structure, easy maintenance.
Because be rigid connection between each feed bin, each valve is installed on feed bin and pipeline alone, in case certain valve or sensor damage, direct change need not any wiring operation, the maintenance of being convenient for.
4. The application is wide, and the device can be applied to multiple fields of automatic material mixing and feeding.
The system has less requirements on the types of materials, so the system can be used for conveying various granular and powdery materials and can also be used for feeding various high-temperature and low-temperature reaction furnaces.
Drawings
FIG. 1 is a schematic structural diagram of an automatic feeding system of a chlorination furnace according to an embodiment of the invention;
FIG. 2 is a flow chart of the automatic feeding control of the chlorination furnace according to the embodiment of the invention;
FIG. 3 is a flow chart of the material mixing and feeding control of the chlorination furnace in the embodiment of the invention.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
The invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an automatic charging system of a chlorination furnace comprises: the device comprises a mixing device 1, an upper high-pressure bin pressure transmitter 2, an upper high-pressure bin exhaust valve 3, an upper balance valve 4, a partition air valve 5, a partition valve 6, a chlorination furnace 7, an upper high-pressure bin weighing sensor 8, an upper high-pressure bin 9, an upper high-pressure bin discharge valve 10, a lower high-pressure bin feed valve 11, a lower high-pressure bin pressure transmitter 12, a lower balance valve 13, a lower high-pressure bin weighing sensor 14, a lower high-pressure bin low material level meter 15, a PLC (programmable logic controller) 16, a lower high-pressure bin 17, a discharge adjusting ball valve 18, an ash pipe pressure transmitter 19, a main conveying adjusting air valve 20, a flowmeter 21, an air source pressure transmitter 22, an air storage tank 23, a lower high-pressure bin fluidizing air valve 24, a lower high-pressure bin air supplementing valve 25, a lower high-pressure bin release valve 26, a soft connection exhaust valve 27, an upper high-pressure bin fluidizing air valve 28, an upper high-pressure bin, An H-101 bin 40, an H-102 bin 41, an H-103 bin 42, a weighing screw 43, a pneumatic butterfly valve 44, an HP-101 weighing hopper 45, an HP-102 weighing hopper 46, an HP-103 weighing hopper 47, a hopper weighing sensor 48, a blender high level sensor 49 and a blender low level sensor 50.
The discharge port of the H-101 bin 40 is communicated with the feed port of the HP-101 weighing hopper 45, the discharge port of the H-102 bin 41 is communicated with the feed port of the HP-102 weighing hopper 46, the discharge port of the H-103 bin 42 is communicated with the HP-103 weighing hopper 47, the weighing screw 43 and the pneumatic butterfly valve 44 are respectively arranged at the discharge ports of the H-101 bin 40, the H-102 bin 41 and the H-103 bin 42, and the weighing sensors 48 are respectively arranged in the HP-101 weighing hopper 45, the HP-102 weighing hopper 46 and the HP-103 weighing hopper 47; the discharge ports of the HP-101 weighing hopper 45, the HP-102 weighing hopper 46 and the HP-103 weighing hopper 47 are all provided with the pneumatic butterfly valve 44 and are communicated with the feed port of the mixing device 1.
Be equipped with on compounding device 1 high level sensor 49 of compounding device with low level sensor 50 of compounding device, the discharge gate of compounding device 1 go up the feed inlet intercommunication in high-pressure storehouse 9, the discharge gate of compounding device 1 with be equipped with in proper order between the feed inlet of going up high-pressure storehouse 9 go up the high-pressure storehouse in advance block valve 31 with go up high-pressure storehouse feed valve 30.
Go up be equipped with in the high-pressure storehouse 9 go up high-pressure storehouse weighing sensor 8, be equipped with on going up high-pressure storehouse 9 go up high-pressure storehouse pressure transmitter 2, go up the discharge gate of high-pressure storehouse 9 with the feed inlet intercommunication of high-pressure storehouse 17 down, the discharge gate of going up high-pressure storehouse 9 is equipped with go up high-pressure storehouse bleeder valve 10, the feed inlet of high-pressure storehouse 17 is equipped with down high-pressure storehouse feed valve 11.
The chlorination furnace is characterized in that the lower high-pressure bin 17 is internally provided with a lower high-pressure bin weighing sensor 14, a lower high-pressure bin low material level meter 15 and a lower high-pressure bin pressure transmitter 12, a discharge hole of the lower high-pressure bin 17 is provided with a discharge adjusting ball valve 18 and is communicated with a feed inlet of the chlorination furnace 7 through an ash pipe, the feed inlet of the chlorination furnace 7 is provided with the partition valve 6, and the chlorination furnace 7 is provided with a chlorination furnace pressure transmitter 39.
The outlet of the gas storage tank 23 is provided with the flow meter 21 and the gas source pressure transmitter 22, and is respectively communicated with the gas inlet of the upper high-pressure chamber 9 through the upper high-pressure chamber fluidization gas valve 28 and the upper high-pressure chamber pressurization gas valve 29, communicated with the gas inlet of the lower high-pressure chamber 17 through the lower high-pressure chamber fluidization gas valve 24, communicated with the gas supplementing port of the lower high-pressure chamber 17 through the lower high-pressure chamber gas supplementing valve 25, communicated with the feed inlet of the chlorination furnace 7 through the partition gas valve 5, and communicated with the outlet of the discharge adjusting ball valve 18 through the main conveying adjusting gas valve 20.
Go up high-pressure chamber 9 and pass through go up high-pressure chamber discharge valve 3 intercommunication compounding device 1, go up still be equipped with on the high-pressure chamber 9 go up balanced valve 4, be equipped with down on the low-pressure chamber 17 balanced valve 13, go up balanced valve 4 with down balanced valve 13 all with the import intercommunication of flexible coupling discharge valve 27, still be equipped with down on the low-pressure chamber 13 high-pressure chamber release valve 26, the export of flexible coupling discharge valve 27 with the export of low-pressure chamber release valve 26 all with H-101 feed bin 40 intercommunication.
The upper high-pressure bin pressure transmitter 2, the upper high-pressure bin exhaust valve 3, the upper balance valve 4, the partition air valve 5, the partition valve 6, the upper high-pressure bin weighing sensor 8, the upper high-pressure bin discharge valve 10, the lower high-pressure bin feed valve 11, the lower high-pressure bin pressure transmitter 12, the lower balance valve 13, the lower high-pressure bin weighing sensor 14, the lower high-pressure bin low level gauge 15, the discharge adjusting ball valve 18, the ash pipe pressure transmitter 19, the main conveying adjusting air valve 20, the flow meter 21, the air source pressure transmitter 22, the lower high-pressure bin fluidizing air valve 24, the lower high-pressure bin air replenishing valve 25, the lower high-pressure bin release valve 26, the flexible connection exhaust valve 27, the upper high-pressure bin fluidizing air valve 28, the upper high-pressure bin pressurizing air valve 29, the upper high-pressure bin feed valve 30, the lower high-pressure bin air replenishing valve 25, the, Go up high-pressure cabin closing valve 31 in advance the chlorination furnace pressure transmitter 39 the spiral 43 of weighing pneumatic butterfly valve 44 the hopper weighing sensor 48, the high level sensor 49 of compounding device with the low level sensor 50 of compounding device all with PLC controller 16 is connected.
The automatic material mixing device further comprises a manual gate valve 32, a pressure gauge 33, a safety valve 34, a one-way valve 35, a gas storage tank manual regulating valve 36, a manual regulating valve 37 and a discharging manual regulating valve 38, wherein the manual gate valve 32 is arranged at a discharging hole of the material mixing device 1, and is located upstream of the upper high-pressure chamber pre-closing valve 31, the pressure gauge 33 and the safety valve 34 are arranged at the top of the upper high-pressure chamber 9, the air tank manual regulation air valve 36 is arranged at the outlet of the air tank 23, is positioned at the upstream of the flowmeter 21 and the air source pressure transmitter 22, the outlet of the lower high-pressure chamber 17 is provided with the manual discharging adjusting valve 38 which is positioned at the upstream of the discharging adjusting ball valve 18, the air inlet of the lower high-pressure chamber 17 is also communicated with the outlet of the discharging manual regulating valve 38 through the manual regulating air valve 37, the air inlets of the upper high-pressure chamber 9 and the lower high-pressure chamber 17 are also provided with the one-way valve 35.
The three bins of the H-101 bin 40, the H-102 bin 41 and the H-103 bin 42 are micro negative pressure bins which are transversely arranged in parallel, high titanium slag, rutile and petroleum coke are respectively arranged in the three bins, and the two high pressure bins of the upper high pressure bin 9 and the lower high pressure bin 17 are arranged in series from top to bottom.
The three weighing screws 43 are respectively installed corresponding to the three micro-negative pressure bins and respectively weigh the feeding of the three micro-negative pressure bins.
The three weighing hoppers, namely the HP-101 weighing hopper 45, the HP-102 weighing hopper 46 and the HP-103 weighing hopper 47 are respectively arranged corresponding to the three weighing screws 43, and the weighing sensors 48 are arranged in the three weighing hoppers to feed back the weight of materials in the hoppers in real time.
Six pneumatic butterfly valves 44, three are respectively arranged between the three weighing hoppers and the weighing screw, and three are arranged at the outlet of the weighing hoppers.
The high level indicator sensor 49 of the mixing device is arranged at the upper end of the mixing device 1 and is used for detecting the material amount in the mixing device 1; the low level indicator sensor 50 of the mixing device is arranged at the lower end of the mixing device 1 and used for detecting the material quantity in the mixing device 1.
The air source pressure transmitter 22 monitors the outlet pressure of the air storage tank 23 in real time, feeds back the pressure in real time, and prevents the conveying failure caused by insufficient air source pressure.
The flowmeter 21 feeds back the flow rate of the delivered gas in real time.
The main conveying adjusting air valve 20 is used for adjusting the air supply quantity of the material pipeline.
The ash pipe pressure transmitter 19 is installed at the front end of the ash pipe and used for detecting and feeding back the pressure of the ash pipe in real time.
The cut-off air valve 5 has adjustable valve opening and prevents backfire.
The downstream of the manual adjusting air valve 37 is connected with a one-way valve which is arranged on a branch circuit at the upper ends of the lower high-pressure cabin fluidization air valve 24 and the discharging adjusting ball valve 18.
Control method
As shown in figures 2 and 3, the control method of the automatic charging system of the chlorination furnace comprises five stages of charging, mixing, feeding, pouring and feeding. For convenience of description, the upper high-pressure chamber 9 and the lower high-pressure chamber 17 are respectively represented by a chamber B and a chamber C in fig. 2 and 3, and the corresponding valves, sensors and transmitters are correspondingly represented. The conveying stage and the feeding stage are shown in the figure.
The charging comprises: confirming that the manual valves in the system comprise the manual gate valve 32, the gas storage tank manual regulating air valve 36, the manual regulating air valve 37 and the manual discharging regulating valve 38 which are in open positions, and all the electric control valves comprise the upper high-pressure bin exhaust valve 3, the upper balance valve 4, the partition air valve 5, the block valve 6, the upper high-pressure bin discharge valve 10, the lower high-pressure bin feed valve 11, the lower balance valve 13, the discharging regulating ball valve 18, the main conveying regulating air valve 20, the lower high-pressure bin fluidization air valve 24, the lower high-pressure bin air supplementing valve 25, the lower high-pressure bin release valve 26, the soft connection exhaust valve 27, the upper high-pressure bin fluidization air valve 28, the upper high-pressure bin pressurization air valve 29, the upper high-pressure bin feed valve 30, the upper high-pressure bin pre-blocking valve 31, the pneumatic butterfly valve 44 and the hopper weighing sensor 48 which are in closed states, the H-101 silo 40, the H-102 silo 41 and the H-103 silo 42 are then charged with the various materials.
As shown in fig. 3, the mixing includes: opening the pneumatic butterfly valve 44, conveying the materials respectively loaded in the H-101 bin 40, the H-102 bin 41 and the H-103 bin 42 to the mixing device 1 for mixing through the weighing screw 43, the HP-101 weighing hopper 45, the HP-102 weighing hopper 46 and the HP-103 weighing hopper 47 according to a set proportion, and closing the pneumatic butterfly valve 44 when the mixing device high-level sensor 49 detects that the mixing device 1 is full;
the feeding comprises the following steps: when the detection value of the upper high-pressure bin weighing sensor 8 is lower than a set lower limit, the upper high-pressure bin exhaust valve 3 is opened, when the upper high-pressure bin pressure transmitter 2 detects that the pressure is lower than a set value of 20KPa, the upper high-pressure bin feed valve 30 is opened, the upper high-pressure bin pre-closing valve 31 is opened in a delayed mode, the upper high-pressure bin fluidization air valve 28 is opened, the material in the mixing device 1 enters the upper high-pressure bin 9, and when the detection value of the upper high-pressure bin weighing sensor 8 reaches a set upper limit, the upper high-pressure bin pre-closing valve 31 and the upper high-pressure bin fluidization air valve 28 are closed in sequence, and the upper high-pressure bin feed valve 30 and the upper high-pressure bin exhaust valve 3 are.
The material pouring comprises the following steps: when the detection value of the lower high-pressure bin weighing sensor 14 is lower than a set lower limit or the lower high-pressure bin low level gauge 15 detects that the lower high-pressure bin 17 is empty, the flexible connection exhaust valve 27 is closed, the upper high-pressure bin pressurization air valve 29 is opened at the same time, when the detection value of the upper high-pressure bin pressure transmitter 2 is greater than or equal to the detection value of the lower high-pressure bin pressure transmitter 12, the upper high-pressure bin pressurization air valve 29 is closed, the lower balance valve 13 is opened and the upper balance valve 4 is opened in a delayed mode, the lower high-pressure bin feed valve 11 and the upper high-pressure bin discharge valve 10 are opened in a delayed mode, the upper high-pressure bin fluidization air valve 28 is opened, and when the detection value of the lower high-pressure bin weighing sensor 14 reaches a set value or a set feeding time is up, the upper high-pressure bin fluidization air valve 28, the upper high-pressure bin discharge valve, The lower balance valve 13 and the upper balance valve 4, and the flexible connection exhaust valve 27 is opened.
The feeding and conveying stages comprise: opening the separation air valve 5 and the main conveying adjusting air valve 20, when the detection value of the ash pipe pressure transmitter 19 is greater than or equal to the detection value of the chlorination furnace pressure transmitter 39, sequentially opening the lower high-pressure bin air replenishing valve 25 and the lower high-pressure bin fluidizing air valve 24, when the detection value of the lower high-pressure bin pressure transmitter 12 reaches a set value, opening the separation valve 6 and the discharge adjusting ball valve 18, closing the separation air valve 5, when the detection value of the lower high-pressure bin weighing sensor 14 is lower than a set lower limit or the lower high-pressure bin low level gauge 15 detects that the material in the lower high-pressure bin 17 is empty, opening the separation air valve 5, then closing the discharge adjusting ball valve 18 and the main conveying adjusting air valve 20, and then closing the separation air valve 5.
And during feeding, constantly detecting the state of the ash pipe to see whether the ash pipe is blocked or not, judging that the ash pipe is blocked when the ash pipe pressure transmitter 19 is abnormally increased, opening the blocking air valve 5, then closing the discharge regulating ball valve 18, simultaneously fully opening the main conveying regulating air valve 20, feeding the ash pipe blocking materials into the chlorination furnace 7, then closing the blocking air valve 5, and opening the discharge regulating ball valve 18 to recover normal feeding.
The system is only run to start when the source pressure transmitter 22 is above a set lower limit, otherwise start is not allowed.
The main conveying regulating air valve 20 and the flowmeter 21 form a PID regulating loop, and the opening degree of the main conveying regulating air valve 20 is regulated in real time according to the set air quantity.
The discharging adjusting ball valve 18 and the lower high-pressure bin weighing sensor 14 form a PID adjusting loop, instantaneous flow is calculated according to the change value of the lower high-pressure bin weighing sensor 14, and the opening of the discharging adjusting ball valve 18 is adjusted in real time according to the instantaneous flow.
After the lower high-pressure bin pressure transmitter 12 reaches a set value (the value can be modified), the system automatically opens the isolating valve 6 and the discharge regulating ball valve 18, closes the isolating air valve 5, and simultaneously forms a PID regulating loop by the pressure in the chlorination furnace 7 detected by the lower high-pressure bin release valve 26, the lower high-pressure bin air compensation valve 25, the lower high-pressure bin pressure transmitter 12 and the chlorination furnace pressure transmitter 39, so as to ensure that the pressure in the lower high-pressure bin 17 is always kept in a set range.
Lower high-pressure cabin weighing sensor 14 low charge level indicator 15 of low-pressure cabin is the condition of opening feeding and pouring, works as the weight value that lower high-pressure cabin weighing sensor 14 detected is less than the settlement lower limit or when low charge level indicator 15 of low-pressure cabin sent the warning down, the system began to operate feeding and pouring stage procedure.
And the upper high-pressure bin feed valve 30 can be opened only when the pressure of the upper high-pressure bin pressure transmitter 2 is lower than a set value, so that the pressure in the upper high-pressure bin 9 is ensured to be at a safe value.
The flexible connection exhaust valve 27 must be firstly closed before material pouring, the upper high-pressure cabin pressure transmitter 2, the upper high-pressure cabin pressurization air valve 29 and the lower high-pressure cabin pressure transmitter 12 are subjected to linkage control, and material pouring can be performed only when the value 2 of the upper high-pressure cabin pressure transmitter is greater than or equal to the value 12 of the lower high-pressure cabin pressure transmitter.
Mixing material, feeding, pouring and pay-off all carry out automatic control through PLC control system, wherein the pay-off stage is along with the system all the time and open and stop the overall process, and mixing material, feeding, pouring alternate going on to certain stage according to the system operation.
The specific implementation methods and ways of the invention are many, and the above description is only the preferred embodiment of the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the protection scope of the present invention. All the components not specified in the present embodiment can be realized by the prior art.
Claims (7)
1. The utility model provides a chlorination furnace automatic material conveying system which characterized in that: the method comprises the following steps: the device comprises a mixing device (1), an upper high-pressure cabin pressure transmitter (2), an upper high-pressure cabin exhaust valve (3), an upper balance valve (4), a partition air valve (5), a partition valve (6), a chlorination furnace (7), an upper high-pressure cabin weighing sensor (8), an upper high-pressure cabin (9), an upper high-pressure cabin discharge valve (10), a lower high-pressure cabin feed valve (11), a lower high-pressure cabin pressure transmitter (12), a lower balance valve (13), a lower high-pressure cabin weighing sensor (14), a lower high-pressure cabin low material level meter (15), a PLC (16), a lower high-pressure cabin (17), a discharge adjusting ball valve (18), an ash pipe pressure transmitter (19), a main conveying adjusting air valve (20), a flowmeter (21), an air source pressure transmitter (22), an air storage tank (23), a lower high-pressure cabin fluidization air valve (24), a lower high-pressure cabin air supplement valve (25), a, The device comprises a flexible connection exhaust valve (27), an upper high-pressure bin fluidization air valve (28), an upper high-pressure bin pressurization air valve (29), an upper high-pressure bin feed valve (30), an upper high-pressure bin pre-closing valve (31), a chlorination furnace pressure transmitter (39), an H-101 bin (40), an H-102 bin (41), an H-103 bin (42), a weighing screw (43), a pneumatic butterfly valve (44), an HP-101 weighing hopper (45), an HP-102 weighing hopper (46), an HP-103 weighing hopper (47), a hopper weighing sensor (48), a mixing device high material level sensor (49) and a mixing device low material level sensor (50);
the discharge gate of H-101 feed bin (40) with the feed inlet intercommunication of HP-101 weighing hopper (45), the discharge gate of H-102 feed bin (41) with the feed inlet intercommunication of HP-102 weighing hopper (46), the discharge gate of H-103 feed bin (42) with HP-103 weighing hopper (47) intercommunication, H-101 feed bin (40), the discharge gate of H-102 feed bin (41) and H-103 feed bin (42) all is equipped with weigh spiral (43) and pneumatic butterfly valve (44), HP-101 weighing hopper (45), HP-102 weighing hopper (46) and HP-103 weighing hopper (47) all are equipped with in weighing sensor (48), HP-101 weighing hopper (45), HP-102 weighing hopper (46) and the discharge gate of HP-103 weighing hopper (47) all are equipped with pneumatic weighing sensor (48), HP-101 weighing hopper (45), HP-102 weighing hopper (46) and HP-103 weighing hopper (47) all are equipped with the discharge gate of pneumatic butterfly valve The butterfly valve (44) is communicated with the feeding hole of the mixing device (1);
the high-pressure bin pre-closing valve (31) and the high-pressure bin feeding valve (30) are sequentially arranged between the discharge port of the mixing device (1) and the feed inlet of the upper high-pressure bin (9);
the upper high-pressure bin weighing sensor (8) is arranged in the upper high-pressure bin (9), the upper high-pressure bin pressure transmitter (2) is arranged on the upper high-pressure bin (9), a discharge hole of the upper high-pressure bin (9) is communicated with a feed hole of the lower high-pressure bin (17), a discharge hole of the upper high-pressure bin (9) is provided with the upper high-pressure bin discharge valve (10), and a feed hole of the lower high-pressure bin (17) is provided with the lower high-pressure bin feed valve (11);
the lower high-pressure bin weighing sensor (14), the lower high-pressure bin low level indicator (15) and the lower high-pressure bin pressure transmitter (12) are arranged in the lower high-pressure bin (17), a discharge hole of the lower high-pressure bin (17) is provided with the discharge adjusting ball valve (18) and is communicated with a feed inlet of the chlorination furnace (7) through an ash pipe, the feed inlet of the chlorination furnace (7) is provided with the isolating valve (6), and the chlorination furnace (7) is provided with the chlorination furnace pressure transmitter (39);
the outlet of the gas storage tank (23) is provided with the flowmeter (21) and the gas source pressure transmitter (22), and is respectively communicated with the gas inlet of the upper high-pressure chamber (9) through the upper high-pressure chamber fluidization gas valve (28) and the upper high-pressure chamber pressurization gas valve (29), the gas inlet of the lower high-pressure chamber (17) through the lower high-pressure chamber fluidization gas valve (24), the gas supplementing port of the lower high-pressure chamber (17) through the lower high-pressure chamber gas supplementing valve (25), the feed inlet of the chlorination furnace (7) through the partition gas valve (5), and the outlet of the discharging adjusting ball valve (18) through the main conveying adjusting gas valve (20);
the upper high-pressure bin (9) is communicated with the mixing device (1) through the upper high-pressure bin exhaust valve (3), the upper balance valve (4) is further arranged on the upper high-pressure bin (9), the lower balance valve (13) is arranged on the lower high-pressure bin (17), the upper balance valve (4) and the lower balance valve (13) are both communicated with an inlet of the flexible connection exhaust valve (27), the lower high-pressure bin (13) is further provided with the lower high-pressure bin release valve (26), and an outlet of the flexible connection exhaust valve (27) and an outlet of the lower high-pressure bin release valve (26) are both communicated with the H-101 bin (40);
go up high-pressure storehouse pressure transmitter (2) go up high-pressure storehouse discharge valve (3) go up balanced valve (4) cut off pneumatic valve (5) block valve (6) go up high-pressure storehouse weighing sensor (8) go up high-pressure storehouse bleeder valve (10) down high-pressure storehouse feed valve (11) down high-pressure storehouse pressure transmitter (12) down balanced valve (13) down high-pressure storehouse weighing sensor (14) down low level gauge (15) in high-pressure storehouse down ejection of compact regulation ball valve (18) ash pipe pressure transmitter (19) mainly carry regulation pneumatic valve (20) flowmeter (21) air supply pressure transmitter (22) down high-pressure storehouse fluidization pneumatic valve (24) down high-pressure storehouse gulp-valve (25) down high-pressure storehouse release valve (26) flexible coupling discharge valve (27), Go up high-pressure storehouse fluidization pneumatic valve (28), go up high-pressure storehouse pressure boost pneumatic valve (29) go up high-pressure storehouse feed valve (30) go up high-pressure storehouse block valve (31) in advance chlorination furnace pressure transmitter (39) spiral of weighing (43) pneumatic butterfly valve (44) hopper weighing sensor (48), high level sensor of compounding device (49) with low level sensor of compounding device (50) all with PLC controller (16) are connected.
2. The chlorination furnace automatic charging system according to claim 1, characterized in that: the automatic material mixing device is characterized by further comprising a manual gate valve (32), a pressure gauge (33), a safety valve (34), a one-way valve (35), a gas storage tank manual adjusting gas valve (36), a manual adjusting gas valve (37) and a discharging manual adjusting valve (38), wherein the manual gate valve (32) is arranged at a discharging port of the material mixing device (1) and is positioned at the upstream of the upper high-pressure bin pre-closing valve (31), the pressure gauge (33) and the safety valve (34) are arranged at the top of the upper high-pressure bin (9), the gas storage tank manual adjusting gas valve (36) is arranged at an outlet of the gas storage tank (23) and is positioned at the upstream of the flow meter (21) and the gas source pressure transmitter (22), the discharging manual adjusting valve (38) is arranged at an outlet of the lower high-pressure bin (17) and is positioned at the upstream of the discharging adjusting ball valve (18), and a gas inlet of the lower high-pressure bin (17) is communicated with an outlet of, the air inlets of the upper high-pressure bin (9) and the lower high-pressure bin (17) are also provided with the one-way valve (35).
3. The control method of the chlorination furnace automatic charging system according to claim 1 or 2, characterized by comprising: comprises the steps of charging, mixing, feeding, pouring and feeding;
the charging comprises: the manual valve in the confirmation system comprises a manual gate valve (32), a manual adjusting air valve (36) of the air storage tank, a manual adjusting air valve (37) and a manual discharging adjusting valve (38) which are in an opening position, and all electric control valves comprise an upper high-pressure bin exhaust valve (3), an upper balance valve (4), a partition air valve (5), a partition valve (6), an upper high-pressure bin discharge valve (10), a lower high-pressure bin feed valve (11), a lower balance valve (13), a discharging adjusting ball valve (18), a main conveying adjusting air valve (20), a lower high-pressure bin fluidization air valve (24), a lower high-pressure bin air supply valve (25), a lower high-pressure bin release valve (26), a flexible connection exhaust valve (27), an upper high-pressure bin fluidization air valve (28), an upper high-pressure bin pressurization air valve (29), The upper high-pressure bin feeding valve (30), the upper high-pressure bin pre-closing valve (31), the pneumatic butterfly valve (44) and the hopper weighing sensor (48) are in a closed state, and then the H-101 bin (40), the H-102 bin (41) and the H-103 bin (42) are filled with various materials;
the mixing comprises the following steps: opening the pneumatic butterfly valve (44), conveying the materials which are respectively filled in the H-101 bin (40), the H-102 bin (41) and the H-103 bin (42) to the mixing device (1) for mixing through the weighing screw (43), the HP-101 weighing hopper (45), the HP-102 weighing hopper (46) and the HP-103 weighing hopper (47) according to a set proportion, and closing the pneumatic butterfly valve (44) when the mixing device high material level sensor (49) detects that the mixing device (1) is full;
the feeding comprises the following steps: when the detection value of the upper high-pressure bin weighing sensor (8) is lower than a set lower limit, opening the upper high-pressure bin exhaust valve (3), when the upper high-pressure bin pressure transmitter (2) detects that the pressure is lower than a set value, opening the upper high-pressure bin feed valve (30), opening the upper high-pressure bin pre-blocking valve (31) in a delayed mode, opening the upper high-pressure bin fluidizing air valve (28), feeding the material in the mixing device (1) into the upper high-pressure bin (9), and when the detection value of the upper high-pressure bin weighing sensor (8) reaches a set upper limit, sequentially closing the upper high-pressure bin pre-blocking valve (31) and the upper high-pressure bin fluidizing air valve (28) and closing the upper high-pressure bin feed valve (30) and the upper high-pressure bin exhaust valve (3) in a delayed mode;
the material pouring comprises the following steps: when the detection value of the lower high-pressure bin weighing sensor (14) is lower than a set lower limit or the lower high-pressure bin low level gauge (15) detects that the lower high-pressure bin (17) is empty, the flexible connection exhaust valve (27) is closed, the upper high-pressure bin pressurization air valve (29) is opened at the same time, when the detection value of the upper high-pressure bin pressure transmitter (2) is larger than or equal to the detection value of the lower high-pressure bin pressure transmitter (12), the upper high-pressure bin pressurization air valve (29) is closed, the lower balance valve (13) is opened, the upper balance valve (4) is opened in a delayed mode, the lower high-pressure bin feeding valve (11) and the upper high-pressure bin discharging valve (10) are opened in a delayed mode, the upper high-pressure bin fluidization air valve (28) is opened, and when the detection value of the lower high-pressure bin weighing sensor (14) reaches a set value or the set feeding time is up, the, The upper high-pressure bin discharge valve (10), the lower high-pressure bin feed valve (11), the lower balance valve (13) and the upper balance valve (4) are opened, and the flexible connection exhaust valve (27) is opened;
the feeding comprises the following steps: the partition air valve (5) and the main conveying adjusting air valve (20) are opened, when the detection value of the ash pipe pressure transmitter (19) is more than or equal to the detection value of the chlorination furnace pressure transmitter (39), the lower high-pressure bin aeration valve (25) and the lower high-pressure bin fluidization air valve (24) are opened in sequence, when the detection value of the lower high-pressure cabin pressure transmitter (12) reaches a set value, the isolating valve (6) and the discharging adjusting ball valve (18) are opened, and the isolating air valve (5) is closed, when the detection value of the lower high-pressure bin weighing sensor (14) is lower than a set lower limit or the lower high-pressure bin low level gauge (15) detects that the lower high-pressure bin (17) is empty, the isolating air valve (5) is opened, then the discharge regulating ball valve (18) and the main conveying regulating air valve (20) are closed, and then the cut-off air valve (5) is closed.
4. The control method of the chlorination furnace automatic feeding system according to claim 3, characterized in that: during feeding, the ash pipe state is constantly detected, whether the ash pipe is blocked or not is judged, when the ash pipe pressure transmitter (19) is abnormally increased, the ash pipe can be judged to be blocked, the blocking air valve (5) is opened, then the discharging adjusting ball valve (18) is closed, meanwhile, the main conveying adjusting air valve (20) is fully opened, ash pipe blocking materials are sent to the chlorination furnace (7), then the blocking air valve (5) is closed, and the discharging adjusting ball valve (18) is opened to recover normal feeding.
5. The control method of the chlorination furnace automatic feeding system according to claim 3, characterized in that: the system is only started when the air source pressure transmitter (22) is higher than a set lower limit value, otherwise, the starting is not allowed.
6. The control method of the chlorination furnace automatic feeding system according to claim 3, characterized in that: the main conveying adjusting air valve (20) and the flowmeter (21) form a PID adjusting loop, and the opening of the main conveying adjusting air valve (20) is adjusted in real time according to the set air quantity.
7. The control method of the chlorination furnace automatic feeding system according to claim 3, characterized in that: the discharging adjusting ball valve (18) and the lower high-pressure bin weighing sensor (14) form a PID adjusting loop, instantaneous flow is calculated according to the change value of the lower high-pressure bin weighing sensor (14), and the opening of the discharging adjusting ball valve (18) is adjusted in real time according to the instantaneous flow.
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Application publication date: 20210713 |