SU1278036A1 - Automatic control system of phosphorite melting in apparatus of cyclone type - Google Patents

Abstract

The invention relates to an automatic control system for the smelting of phosphates in a cyclone-type apparatus, can be used in chemical industry and improves the quality of the target product. The system contains a camera 1 with a pinch 2, a collection of 3 melts, a loading cartridge 4 of the charge and a hopper with auger feeder 5. The system includes a circuit for controlling the consumption of raw materials - a sensor 11 (L), regulating with $ (Lc: 00 .2

Description

torus 19 (P), regulator 26 (RO), fuel consumption control loop (D 15, P 20, PO 27), air flow control loop (D 13, P 21, PO 28), oxygen control loop (d 14, P 22 PO 29), a circuit for regulating the flow of water through a pinch coil 2 (} 12, computing unit 24). System Contains

I.

There is also a computational unit 25 (BBj; .У1Я onr. of the setpoint of the TG stream associated with D 11, 3 (14, setters 30 31, 32, respectively, fluorine content of the raw material, the target product, and insoluble sediment in the raw material. it is controlled through an adjusting heat flow regulator 23 with P 19, 2 or.

The invention relates to systems for the automatic control of phosphorite flux in cyclone-type apparatus and can be used in the defluorization of natural phosphorite. The purpose of the invention is to improve the quality of the target product. In Fig. 1, the resulting heat THbiM is shown by contacting the specific heat flux through the pressure of the cyclone chamber g with the fluorine content on you „„ BMX course from the CONFERENCE C of chamber C and the final fluorine content in product F, with alternately changing the consumption of raw material G, fuel consumption B, and the initial concentration of fluorine in the raw material Rzi of the insoluble residue BUT, in figure 2 — a principle diagram of the systems for automatic control of the fusion phosphate in the cyclone unit. The automatic control system contains a cyclone chamber 1, non-ferrets 2, a melt collector 3, a loading cartridge 4 of the charge, a hopper with a uHie feeder 5, Oxygen supply pipe 6, air 7 and fuel (gas) 8 are connected to the cyclone chamber 1 serpentine 9 which is connected to the cooling piping 10, c. The automatic control system contains sensors for the consumption of raw materials 11, water 12, air 3, bowels 14, fuel 15, cooling water temperatures 16 and 17 (respectively, VV at the output and entrance of the coil 9 / and frequency of the acoustic signal 18, flow controllers for raw materials 19, 101 stub 2 air 21 and oxygen 22, the correct heat flux regulator 23, the spinning decanter unit 24 for decl1; its heat flux value g through pinch 2, the additional computational unit 25 for determining the specified heat flux g through pinch 2 regulating the org supply of raw materials 26, fuel 27, air 28 and oxygen 29, setting devices 30-32. The system works as follows. In accordance with the task set by the operator, regulator 19 stabilizes the consumption of raw material by acting on regulator 26 of screw auger 5 according to a signal from flow sensor 11 raw materials. The fuel consumption regulator 20 maintains the operator-set ratio of the fuel-oxidizer by influencing the regulator 27 of fuel supply in accordance with the signal L-Iamn from the fuel consumption sensors 15, air 13 and oxygen 14. Flow regulator 2 air at the operator's request stabilizes the air flow by acting on the regulator 28 of the air supply by the signal of the air flow sensor 13. The oxygen consumption regulator 22 maintains a predetermined frequency of acoustic noise in the device at the signal of the sensor 18 of the frequency of the acoustic signal by acting on the regulating organ 29 of oxygen supply. The adjusting heat flow controller 23 makes an additional change in the raw material and oxygen consumption, forming correction signals associated with the flow controller 18 to the raw material controller and oxygen consumption regulator 22 depending on the heat flux signal g from the computing unit 24 and the job signal the heat flow from the additional computing unit 25, the temperature of the water cooling the clamp, is measured at the inlet to the coil 9 by the sensor 17 and at the exit from the serpent 9 by the sensor 16. The signals from the sensors 1 6 and 17, which are included in the commonplace, are subtracted, forming the signal T (temperature difference), which enters the computing unit 24. This unit also receives the cooling water discharge signal Gg from the sensor 12, by multiplying the incoming signals in the computing unit 24, the current value signal is generated heat flux g. Additional computing unit 25 performs the calculation of the task on the heat flux g corresponding to the required fluorine content in the final product F | at the current values Fj and the initial concentration of the insoluble NO sediment according to the signals of the raw material consumption G ,, air L and oxygen G. The calculation is carried out according to the equation FK, g + a, G, + a p, HO. The oxygen concentration in the enriched air that enters it is determined from the oxygen and air consumption signals according to the equation g 2 | b + ck g to calculate g. additional computing unit 25 receives signals from flow sensors of raw materials 11, air 13 and oxygen 14 In addition, additional computing unit 25 performs correction of the coefficients of equation (1) according to periodically measured laboratory mets), 7Gm values of the final fluorine content in product F., the insoluble residue BUT, the initial fluorine content in the raw material F and the heat flux g through pinch. The correction is made according to the relaxation identification algorithm. To this end, an additional. The computational unit 25 is periodically inputted by the operator from the manual setters 30-32 of the final 364. Target F, and initial F, containing fluorine and the insoluble residue BUT, as well as the signal from the computing unit 24 through the heat flux through the pinch. If at some point in time it turned out that the determined fluorine containing FI ,,,, in the product is greater than the specified 0.02% in the product, additional computing unit 25 according to equation () finds a new value -1u specifying the heat flow controller 23 Different from the previous value by 3 ° C, the new value of the setting gj is supplied to the heat flow controller 23, which forms the control pulse for the raw material consumption controller 19 and the oxygen consumption controller 22. Oxygen consumption increases abruptly (p-law), ensuring that the air flow rate is increased. by 2%, and the consumption of raw materials gradually decreases (pi-law) by 0.2 kg / s. With a decrease in FK, the response of the system is opposite. In this case, the equation (1) has the form Fk 0.3431 - 1.63 -10 q + + 2.095-10 G - 7.866-10 n, + + 3.114.-10 FH - 1.63-10 HO. The claims of the system for automatic control of fusible phosphate in a cyclone type apparatus, containing a raw material consumption sensor connected via a raw material consumption regulator to a regulating body for feeding raw materials to a cyclone chamber, a fuel consumption sensor connected through a fuel regulator to a regulating body of fuel supply into the cyclone chamber, the air flow sensor connected through the air flow regulator with the regulator of the air supply to the cyclone - its chamber, the oxygen flow sensor connected through the regulator p Oxygen flow with the regulator of the oxygen supply, the water flow sensor through the pinch coil, and the water inlet and outlet sensors of Mayevik associated with the input of the computing unit, are different in that, in order to increase the quality of the target product, the system additionally contains a heat regulator flow, additional computing unit n adders for fluorine content in raw materials

and the target product and the insoluble precipitate in the raw material, with input. Additional computing unit associated with sensors for raw materials, air and oxygen consumption, controls for fluorine content in raw materials and the target product. And insoluble sediment in raw materials and output of the computing unit; output of additional calculations is V / x

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unit is connected via a heat flow adjustment regulator with a raw material consumption regulator in

The 5th cyclone chamber, the computational output, the unit is connected to the input of the heat flow adjustment regulator, and the outputs of the oxygen and air flow sensors are connected to the inputs of the flow rate regulator. 175 a 1 1

Claims (1)

Claim System of automatic control of phosphorite smelting in the batching apparatus οποί ² ) The oxygen concentration in the enriched air entering it is divided by the flow signals of the genus and air according to the equation O, 21L + Gk To calculate the additional _gj You are a numeral ⁴⁰ a block 25 from raw poluchaet'signaly flow sensor 11, air 13 and oxygen 14. In addition, an additional calculation unit 25 corrects coe ^'4 $ cients of (1) a _Q -a _f of periodically measured by the laboratory method, the values of the final fluorine content in the product F _k , the content of the insoluble residual HO, the initial fluorine content in the feed F _H and the heat flux _g through the pinch. Correction is made according to the relaxation identification algorithm. To this end, in an additional. Computing unit 25, the operator periodically enters signals from manual adjusters 30-32 of the final cyclone type, comprising a feed flow sensor connected through a feed flow regulator to a regulating body for supplying raw materials to the cyclone chamber, a fuel flow sensor connected through a flow controller fuel with a regulating body for supplying fuel to the cyclone chamber, an air flow sensor connected through an air flow regulator with a regulating body for supplying air to a cyclone chamber, a flow sensor to sulphide connected through an oxygen flow regulator with a regulating oxygen supply body, a water flow sensor through a pinch coil and water temperature sensors at the inlet and outlet of the coil associated with the input of the computing unit, characterized in that, in order to improve the quality of the target product, system 55 is additionally contains a corrective heat flow controller, an additional computing unit and adjusters of fluorine content in raw materials s and the target product and insoluble precipitate in the feed, while the inputs of the additional computing unit are associated with flow sensors of raw materials, air and oxygen, the adjusters of the fluorine content in the feed and the target product and insoluble precipitate in the feed and the output of the computing unit, the output of the additional computing unit is connected through a correction heat flow regulator with a regulator of the flow of raw materials into the 5th cyclone chamber, the computational output. the unit is connected to the input of the correcting heat flow controller, and the outputs of the oxygen and air flow sensors are connected to the inputs of the fuel consumption controller 10. Figure 1