SU1333672A1 - Apparatus for automatic control of process of granulating straight powder superphosphate - Google Patents

Abstract

The invention relates to a device for automatic control of the granulation process of simple powdered superphosphate, can: be used in the chemical industry and allows for stabilization of quality and increase the output of the finished product, reducing raw material convergence, (Pus.f after sale).

Description

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Energy resources and operating costs by improving control accuracy. The device contains a circuit for controlling the ratio of the flow rates of the initial superphosphate and the neutralizing additive supplied to the hopper 3, the flow sensor 17, the dispenser (D) 5, the regulator (P) 6, and the control ratio of the flow ratio

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The invention relates to systems for the automatic control of chemical processes, in particular, to the system for the automatic control of the granulation process of simple powdered superphosphate, and can be used in the chemical industry.

The purpose of the invention is to stabilize the quality and increase the yield of the finished product, reducing the consumption of raw materials, energy resources and operating costs due to increased control accuracy.

The drawing shows a schematic diagram of the device

The device contains a hopper 1 of the initial powdered superphosphate, from which the superphosphate through the scales 2 and the neutralization unit is conveyed to the granulation section - the bunker 3, the bunker 4 of the neutralizing additive, which through the automatic dispenser 5 enters the neutralization unit. Regulator 6 ratios with unit 7 ratios are associated with scale 2, metering device 5 and metering drive 8. The reductor bin 9 with a level 10 sensor installed in it is connected to an automatic dispenser 11. Into the granulator 12, neutralization superphosphate and retur get into dispensers 12 through dispensers 13 and 11. The device also contains a water pumping unit 14 with a water pressure regulating valve 15, which is piped. the wire is supplied to the water collector of the granulator 12 through the shut-off valve 16 and the flow sensor 17, the manual valves 18, the control valve 19 and the water flow sensor 20, through

Dov, Retur and Neutralized Superphosphate (D 11, 13, P 27, Sensor 17 D 13), control loop for the ratio of flow rates of the total consumption of Retur and neutralized superphosphate and water to the head of the granulator (Sensor 20, D 11, 13, adder 32 valve 19). 1 il.

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which the water is injected by the nozzles 21 into the internal cavity of the granulator 12J regulator, 22 pressure with pressure setting 23, connected with pressure sensor 24 and regulating valve 15J screw 25 connected with hopper 9, and accumulation bin 26J ratio 27 setting device 28 ratios associated with dispensers 13 and 11 and with the actuator 29 of the dispenser IIJ unit 30, associated with the actuator 31 of the dispenser 13; an adder 32 connected to the dispensers 13 and 11, with a regulator 33 ratios and 34 interlocks. The regulator 33 ratios with the setpoint adjuster 35 is connected with the water flow sensor 20 and the control valve 19, and the lockout relay 34 is connected with the cut-off valve 16 and the granulator actuator 36. The device includes a blocking relay 37 associated with a level 10 retura sensor and an actuator 38 of a screw 25; a blocking relay 39 associated with a water flow sensor 17 and a dispenser drive 31; dryer drum . 40, into which granulated superphosphate from granulator 12 enters; Elevator 41, screen 42, fluidized bed apparatus (CS) 43, screw-44 and crusher 45, interconnected by leaks; cyclone 46, connected with drying drum 40 and screw 44; a cyclone 47 associated with a KS 43 apparatus and a screw 44j; an elevator 48, receiving a retur from the auger 44 and returning it to the bunker 9.

The device works as follows.

The initial simple powdered superphosphate is loaded with grab cranes into the hopper 1, from where it is conveyed through the balance 2 to the neutralization unit. The neutralizing additive is fed into the bunker 4 and then automatically dispensed 5 is introduced into the flow of the original superphosphate and after mixing is fed into the granulation section - bunker 3, the Regulator 6 of the ratio according to the task maintains the ratio of superphosphate - neutralizing additive to the effect on the drive 8 of the dispenser 5 of the neutralizing additive , thereby providing the necessary degree of neutralization of simple superphosphate.

From the hopper 3, the feedstock 13 feedstock (a simple neutralized superphosphate) is fed to the granulator 12, and a retur is delivered from the hopper 9 to the feedstock 11. In a rotating drum, superphosphate and retur are mixed and under the influence of water sprayed by nozzles 21, granulated oaks are obtained, which, rolling over the inner cavity of the granulator, are fed through the chute into the drying drum 40. Regulator 27 maintains the ratio superphosphate according to the task - retur, affecting the actuator 29 of the dispenser 11 retur. The ratio controller 23, in accordance with the assignment, maintains the ratio of the sum of the costs of superphosphate to retur with water, and the impulse of the sum of expenditures of superphosphate to retour regulator 33 receives an OT of adder 32, which, in turn, is associated with dispensers 13 and 11. Thus, the normalized dosing of the input streams of superphosphate, retur and water ensures the high-quality management of the granulation process and stabilizes the operation of the entire production line. In case of emergency, as well as in case of overflow of the bunker 9 of the retur by 45 45 auger. Screw 44 provides the reasons for the excessive retur to go through the chute 25 by the screw 25 into the storage bin 26. The auger 25 is turned on and off automatically by a command from the sensor Retura level through lockout relay 37. The capacity (load) of the process line is set by the setting device 30, which acts 50

returning a retur from a screen 42, a cyclone 46 and a cyclone 47 to an elevator 48, which returns this retur to a bunker 9.

Claims (1)

Invention Formula A device for automatic control of the granulation process on the actuator 31 of the dispenser 13 of the original 55 simple powdered superphosphorus. In the event of emptying the veil hopper containing the return su-3 hopper and stopping the supply of dozensperfosf with discharge screw, dozer 13- into the granulator, automatically adjusting the ratio of the 2.7 terminated simple superphosphate, sensor , e 10 15 20 33672 The supply of retur is delivered by acting on the regulator 27 on the actuator 29 of the dispenser 11. In parallel, the adder 32 processes the signal to reduce the amount of superphosphate flows and the retur on the regulator 33 to the ratio that affects the closing of the water valve 19. At the same time, the signal from the adder 32 commands the lock relay 34 to close the shut-off valve 16. In the event the granulator stops, a parallel command is received from the actuator 36 of the lock relay granulator 34 to close the shut-off valve 16. In this case, the common water cut-off will entail on command from the flow sensor 17 through the blocking relay 39, stopping the supply of raw materials by the metering device 13 and through the ratio controller 27, stopping the supply of the retur by the metering device 11. liquid in the granulator is provided for stabilizing the water pressure at the pump head 14. The pressure regulator 22, depending on the pressure in the water pressure line, acts on the control valve 15 installed on the bypass jumper of the suction and pump head 14. Stabilization of the operation of the granulation unit reduces the piecherunos from the drying drum 40 and, accordingly, reduces the return of the retur from the cyclone 46, a more uniform material flow in the drying drum facilitates the operation of the elevator 41 feeding the material to the screen 42, blegchaet its operation and changes the output ratio of the fractions towards increasing the flow in the COP device, which he leaves the finished product, and reducing the flow of large and grinder 45, and at retour 25 thirty 35 40 returning a retur from a screen 42, a cyclone 46 and a cyclone 47 to an elevator 48, which returns this retur to a bunker 9. Invention Formula the flow rate of the total amount of water supplied to the granulator, and the valve, installed on the line of the total amount of water, characterized in that, in order to stabilize the quality and increase the yield of the finished product, to reduce the flow rate, energy resources and operating costs due to increased control accuracy , it additionally contains a flow sensor of the raw material of powdered simple superphosphate, a valve and a water flow sensor at the head of the granulator, a dispenser for the neutralizing additive in the raw material, a regulator corresponding to the cost of raw materials and neutralizing additives, associated with their inputs with the appropriate flow sensor and dispenser, and output - with a dispenser drive installed on the supply line of the neutralizing additive, retour superphosphate dispenser, regulator of the ratio of neutralized superphosphate costs and partially withdrawn from the process through the screw retour superphosphate bonded Compiled by R.Kleiman Editor N.Kishtulinets Tehred M.Hodanich Proofreader Order 3924/22 Circulation 407 Subscription VNIIPI State 1 USSR Committee for inventions and discoveries 113035, Moscow, F - 35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 0 five five its inputs with the appropriate dispensers, and the output with the dispenser drive of the retour superfbsfat, the combinator of the neutralized superphosphate and returne superphosphate dispensers, connected by their entrances to the corresponding dispensers, the cutoff blocking relay of the total water flow, connected by its inlets to the outlets. the adder and granulator drive, and the output to the valve of the total amount of water, the regulator of the ratio of water flow to the head part of the granulator and the total flow of neutralized superphosphate and retour superphosphate, connected by its inputs to the corresponding water flow sensor and totalizer, and water supply valve to the head of the granulator, interconnected level sensor in the superphosphate retractor bunker and retractable superphosphate auger drive blocking relay, metering drive off shutdown relay ralizovannogo feedstock coupled with a sensor of the total water consumption in a granulator.