A method for estimating solid content on-line display of ternary precursor precipitation reactor

A reaction kettle, solid content technology, applied in electrical components, complex mathematical operations, structural parts, etc., can solve problems such as small application range, unsuitable for obtaining solid content of ternary precursors, and no consideration of temperature, etc. The effect of improving product quality

CN108804389BActive Publication Date: 2022-03-25GUANGDONG JIANA ENERGY TECH CO LTD
10 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-03-25

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A method for estimating the solid content of a ternary precursor reactor online display, comprising the following steps: 1) obtaining the lowest temperature and the highest temperature through a temperature sensor; 2) dividing the range from the lowest temperature to the highest temperature into multiple temperature ranges; 3) In each temperature range, the torque value is measured by the built-in torque tester in the reactor, and the solid content under the corresponding torque value is measured; 4) The relationship curve between the torque value and the solid content in each temperature range is obtained by fitting; 5 ) Obtain the functional relationship between the torque obtained by sampling and the solid content; 6) Optimize the functional relationship in step 5); 7) Call the functional relationship of different temperature ranges according to the temperature during production, and obtain the solid content in the reactor according to the torque value value to monitor the progress of the reaction in the reactor. The invention can accurately, rapidly and continuously determine the value of the solid content in the ternary precursor precipitation reaction kettle, and grasp the reaction process in the reaction kettle in time; thereby improving the product quality of the ternary precursor.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of lithium ion battery ternary material precursor production equipment, in particular to a method for estimating the solid content of the ternary precursor precipitation reactor on-line display. Background technique

[0002] The preparation of precursors is one of the most critical processes in the production process of ternary materials for lithium-ion batteries. At present, the main industrial preparation method is to combine a certain concentration of nickel, cobalt, and manganese metal salt solution with a certain concentration of alkaline solution and complexation. The agent is continuously added to the reaction kettle according to a certain flow rate, and the hydroxide precipitate is produced under the appropriate reaction temperature, stirring speed and pH. The production and preparation of the precursor is an acid-base neutralization reaction, which needs to be carried out in an environment protected...

Examples

Embodiment 1

[0027] like Figure 5 As shown, a ternary precursor precipitation reaction kettle provided in this embodiment includes a shell 1, a feed port 2, a discharge port 3, a motor 4, a transmission shaft 5, a stirring impeller 6, a torque tester 7, and a temperature sensor. And the programmable display screen 8, the feed port 2 is arranged on the upper part of the reactor shell 1, the discharge port 3 is arranged at the bottom center position of the reactor shell 1, and the two ends of the transmission shaft 5 are respectively located outside the reactor shell 1 and connected to the top The motor 4 and the reactor shell 1 are internally connected to the stirring impeller 6, the torque tester 7 is installed on the drive shaft 5 outside the reactor shell 1 and outputs the torque of the drive shaft 5 to the programmable display screen 8, and the temperature sensor is installed in the reactor Inside and immersed in the fluid inside the reactor and output the temperature of the fluid insi...