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CN-121992458-A - Detection device for electrolytic aluminum cell equipment

CN121992458ACN 121992458 ACN121992458 ACN 121992458ACN-121992458-A

Abstract

The utility model provides a detection device for electrolytic aluminum cell equipment, includes the electrolysis case, the inside of electrolysis case is equipped with electrolyte, the top of electrolysis case is equipped with the heat preservation lid, the inner bottom lateral wall of electrolysis case is equipped with the negative plate, fixedly connected with positive cylinder on the lateral wall of heat preservation lid, the bottom side and the electrolyte contact of positive cylinder, the top fixedly connected with injection head of heat preservation lid, the feed liquor passageway has been seted up in the injection head, the top fixedly connected with conveyer pipe of feed liquor passageway. According to the invention, the concentration, temperature, density and other parameters of the electrolyte are obtained in real time by integrating various sensors, and the electrolysis state value is automatically calculated based on a preset formula, so that the real-time judgment and early warning of the electrolysis state are realized, and the stability and efficiency of electrolytic aluminum production are improved.

Inventors

  • WEI YUWEI
  • HUANG FENGXIAO
  • LI JIAWEI
  • ZHANG LIN
  • ZHAN DEMING
  • CHEN SISHI
  • Tan Kaifen
  • QIN FENG
  • Tang Zien

Assignees

  • 广西壮族自治区特种设备检验研究院

Dates

Publication Date
20260508
Application Date
20260115

Claims (9)

  1. 1. A detection device for electrolytic aluminum cell equipment, includes electrolysis case (5), a serial communication port, the inside of electrolysis case (5) is equipped with electrolyte (1), the top of electrolysis case (5) is equipped with heat preservation lid (6), the interior bottom lateral wall of electrolysis case (5) is equipped with negative plate (2), fixedly connected with positive cylinder (7) on the lateral wall of heat preservation lid (6), the bottom of positive cylinder (7) and electrolyte (1) contact, the top fixedly connected with of heat preservation lid (6) pours into first (8), liquid inlet channel (10) have been seted up in pouring into first (8), liquid inlet channel's (10) top fixedly connected with conveyer pipe (9), the bottom of pouring into first (8) extends into electrolyte (1) in, the top fixedly connected with conveyer pipe (9) of pouring into first (8), the bottom fixedly connected with detection case (3) of pouring into first (8), detection case (3) adopt high temperature resistant transparent glass to make, be equipped with in detection case (3) liquid inlet channel (10), liquid inlet channel (10) top fixedly connected with conveyer pipe (9), liquid inlet sensor (8) bottom extension into electrolyte (1), temperature sensor (12), infrared sensor (13), temperature sensor (13) wireless sensor (13) The ray type density sensors (11) are electrically connected with an external central processing unit through wireless transmission modules (4).
  2. 2. A detection device for an electrolytic aluminum cell apparatus as claimed in claim 1, wherein the electrolyte (1) consists of an electrolyte and an aluminum liquid.
  3. 3. The detection device for an electrolytic aluminum cell device according to claim 1, wherein the LIBS sensor (13) is used for exciting electrolyte surface plasma through high-energy laser pulse, and collecting characteristic spectra to analyze the concentration of each element of the electrolyte (1) in real time; The infrared temperature sensor (12) is used for detecting the temperature of the electrolyte (1), and the radial density sensor (11) is used for detecting the density of the electrolyte (1).
  4. 4. The detecting device for an aluminum electrolysis bath apparatus as claimed in claim 1, wherein an electrolysis state evaluation module is arranged in the CPU, and the electrolysis state evaluation module is used for inputting the concentration, the temperature and the density of the electrolyte into an electrolysis state formula to judge the electrolysis state.
  5. 5. A detecting device for an aluminum electrolysis bath apparatus, as claimed in claim 4, wherein the electrolysis state formula is: ; Wherein, the In order to be an electrolysis state value, E [0, 1], the larger the value is, the farther the electrolysis state deviates from the ideal value is; , , is the parameter value of concentration, temperature and density in ideal electrolysis state; 、 、 Respectively the concentration, temperature and density values detected by a LIBS sensor (13), an infrared temperature sensor (12) and a ray type density sensor (11) in real time, , , As the weight coefficient of the light-emitting diode, =0.5, =0.25, =0.25。
  6. 6. A detection apparatus for an electrolytic aluminum cell device as recited in claim 5, wherein: the electrolysis state comprises a normal state, a boundary state and an abnormal state; normal state with ESI less than or equal to 0.3, boundary state with ESI less than or equal to 0.3 and ESI less than or equal to 0.6, abnormal state with ESI > 0.6, wherein the abnormal state includes over electrolysis and under electrolysis.
  7. 7. The detecting device for an aluminum electrolysis bath apparatus as claimed in claim 6, wherein the CPU is provided with a conductivity calculating module for calculating the real-time conductivity of the electrolyte through a conductivity formula.
  8. 8. A detecting device for an aluminum electrolysis cell according to claim 7, wherein the conductivity formula is: ; Wherein, the In order to be of electrical conductivity, Is Faraday constant 96485C/mol; the concentration of the electrolyte is real-time; the sum of the charge numbers of all ions in the electrolyte; Is the limiting ion mobility; Is a gas constant; The temperature of the electrolyte is real-time; is the activation energy; The concentration correction factor is obtained from the prior experience.
  9. 9. A detecting device for an aluminum electrolysis bath apparatus, as claimed in claim 8, wherein the CPU calculates the conductivity value by the conductivity calculation module and calculates the fluctuation amplitude of the conductivity by comparing the conductivity value with the history data.

Description

Detection device for electrolytic aluminum cell equipment Technical Field The invention relates to the technical field of electrolytic aluminum tanks, in particular to a detection device for electrolytic aluminum tank equipment. Background Electrolytic aluminum cell equipment is the core equipment of the aluminum industry for the reduction of alumina to metallic aluminum by electrolysis. The core function of the method is to provide a high-temperature and high-current environment, so that aluminum oxide is decomposed in molten electrolyte, and industrial continuous production of aluminum is realized. In the production process of electrolytic aluminum cell equipment, electrolyte and aluminum liquid are required to be taken to detect whether the electrolyte and aluminum liquid reach electrolysis standards, the conventional method is to open a gate of the equipment to carry out liquid taking detection, but the gate of the electrolytic cell is required to be opened every time liquid taking, so that high-temperature electrolyte (about 950 ℃) is contacted with the outside, the single-time sampling heat loss is about 5% -8%, the loss cost is high, the conventional electrolytic aluminum cell equipment lacks real-time and accurate electrolyte state monitoring means, mainly relies on manual periodic sampling analysis, the problems of lag in detection, inaccurate data and the like exist, abnormal states of electrolysis (such as over electrolysis and under electrolysis) are difficult to discover in time, and unstable production, increased energy consumption and fluctuation of product quality are caused. Therefore, a detection device for an electrolytic aluminum cell apparatus is required to solve the above-described problems. Disclosure of Invention In order to solve the technical problems, the invention adopts the following technical scheme: The utility model provides a detection device for electrolytic aluminum cell equipment, includes the electrolysis case, the inside of electrolysis case is equipped with electrolyte, the top of electrolysis case is equipped with the heat preservation lid, the inner bottom lateral wall of electrolysis case is equipped with the negative plate, fixedly connected with positive cylinder on the lateral wall of heat preservation lid, the bottom side and the electrolyte contact of positive cylinder, the top fixedly connected with injection head of heat preservation lid, the feed liquor passageway has been seted up in the injection head, the top fixedly connected with conveyer pipe of feed liquor passageway, the bottom of injection head extends into in the electrolyte, the top fixedly connected with conveyer pipe of injection head, the bottom fixedly connected with detection case of injection head, the detection case adopts high temperature resistant transparent glass to make, be equipped with LIBS sensor, infrared temperature sensor, radial type density sensor, wireless transmission module in the detection case, LIBS sensor, infrared temperature sensor, radial type density sensor all are connected or wireless communication connection through wireless transmission module and external central processing unit's electricity. Preferably, the electrolyte consists of an electrolyte and an aluminum liquid. Preferably, the LIBS sensor is used for exciting surface plasma of the electrolyte through high-energy laser pulse, and collecting characteristic spectra to analyze the concentration of each element of the electrolyte in real time; the infrared temperature sensor is used for detecting the temperature of the electrolyte, and the ray type density sensor is used for detecting the density of the electrolyte. Preferably, an electrolysis state evaluation module is arranged in the central processing unit, and the electrolysis state evaluation module is used for inputting the concentration, the temperature and the density of the electrolyte into an electrolysis state formula to judge the electrolysis state. Preferably, the electrolytic state formula is: ; Wherein, the In order to be an electrolysis state value,E [0, 1], the larger the value is, the farther the electrolysis state deviates from the ideal value is;,, is the parameter value of concentration, temperature and density in ideal electrolysis state; 、、 Respectively the concentration, temperature and density values detected by the LIBS sensor 13, the infrared temperature sensor 12 and the ray type density sensor 11 in real time, ,,As the weight coefficient of the light-emitting diode,=0.5,=0.25,=0.25。 Preferably, the electrolysis state includes a normal state, a boundary state, an abnormal state; normal state with ESI less than or equal to 0.3, boundary state with ESI less than or equal to 0.3 and ESI less than or equal to 0.6, abnormal state with ESI > 0.6, wherein the abnormal state includes over electrolysis and under electrolysis. Preferably, a conductivity calculating module is arranged in the central processing unit, and the conductivity ca