CN-121977976-A - Method for judging whether coke particle size is normal or not by using cloth parameters

Abstract

The invention relates to a method for judging whether the coke grain size is normal by using a distribution parameter, which belongs to the technical field of blast furnace ironmaking and comprises the steps of collecting coke weighing, jacking and opening of a throttle valve and corresponding distribution time when the coke grain size is normal in the blast furnace ironmaking process, carrying out normalization verification and descriptive statistics on distribution time data under a preset weighing and preset jacking combination, determining a normal state operation range of the distribution time by using a probability density function of the normal distribution when the distribution time is in accordance with normal distribution when the distribution time is in excess of an upper limit and a lower limit. According to the invention, through carrying out normal examination on the distribution time data, the normal state operation range of the distribution time is determined according to normal distribution characteristics, so that effective early warning of abnormal conditions of the coke particle diameter is realized.

Inventors

• ZHAO YANG
• HAN YEWEI
• LIU LIJUN
• Pan Xishun
• BAI WENGUANG
• GAO RUIPING
• ZHANG ZHI

Assignees

• 包头钢铁（集团）有限责任公司

Dates

Publication Date

20260505

Application Date

20251209

Claims (7)

1. 1. A method for judging whether the coke grain size is normal by using a cloth parameter, which is characterized by comprising the following steps: step 1, collecting coke batch weight, jacking and opening of a throttle valve and corresponding distributing time when the coke particle diameter is normal in the blast furnace ironmaking process; Step 2, removing the coke weighing, the jacking and the opening of the throttle valve which are not in the set range as abnormal data to obtain the coke weighing, the jacking and the opening of the throttle valve after abnormal data are removed and the corresponding distribution time; step 3, carrying out normalization verification and descriptive statistics on distribution time data under preset batch weights and preset jacking combinations; Step 4, when the distribution time data corresponding to the preset weight and the preset jacking combination accords with normal distribution, determining the normal state operation range of the distribution time by using a probability density function of the normal distribution; And 5, when the distribution time exceeds the upper limit and the lower limit, the coke particle size is abnormal.
2. 2. The method according to claim 1, wherein in the step 3, when the distribution time data corresponding to the preset lot weight and the preset top pressure combination do not meet the normal distribution, the step 2 is executed again.
3. 3. The method for determining whether the coke grain size is normal or not according to claim 2, wherein in step 4, the probability density function of the normal distribution is: Where σ represents the standard deviation, μ represents the mean, and σ 2 represents the variance.
4. 4. A method for judging whether the coke grain size is normal or not by using the distribution parameters according to claim 3, wherein in step 4, the value at which the probability density function of the normal distribution calculates the two tails of 5% probability respectively is used as the distribution time normal state operation range.
5. 5. The method according to claim 4, wherein when the distribution time is continuously less than the lower limit, the coke particles are smaller, and when the distribution time exceeds the upper limit, the coke particles are larger.
6. 6. An electronic device comprising a bus, a transceiver, a memory, a processor and a computer program stored on the memory and operable on the processor, the transceiver, the memory and the processor being connected by the bus, wherein the computer program when executed by the processor performs the steps of a method for determining whether coke particle size is normal using a cloth parameter as claimed in any one of claims 1 to 5.
7. 7. A computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor performs the steps of a method for determining whether a coke particle size is normal using a cloth parameter as claimed in any one of claims 1 to 5.

Description

Method for judging whether coke particle size is normal or not by using cloth parameters Technical Field The invention relates to the technical field of blast furnace ironmaking, in particular to a method for judging whether the coke particle size is normal or not by using a distribution parameter. Background In the blast furnace ironmaking process, coke plays an extremely critical role, and the particle size of the coke is taken as an important physical index of the coke, so that the method has a profound effect on the high-efficiency operation and production benefits of the blast furnace ironmaking. With the rapid development of the steel industry, the blast furnace ironmaking is advanced towards the large-scale and high-efficiency direction. Coke is an indispensable raw material for blast furnace ironmaking, and not only provides heat, but also a reducing agent and a supporting framework. Proper coke particle size can ensure good air permeability in the blast furnace. The particle size is too large, the void ratio between cokes is increased, the burden distribution is uneven, a gas rising channel is unstable, the heat transfer is affected, the air permeability of a material column is poor, the resistance of gas passing is increased, the pressure in the furnace is increased, and even accidents such as hanging materials are caused. Under the background of strong competition in the current iron and steel market and increasingly strict requirements on energy conservation and emission reduction, the tight monitoring of the coke particle size in the daily operation process plays an important role in the stability, smoothness, economy and low consumption of the blast furnace ironmaking process. However, coke has large granularity and non-uniformity of granularity, and a large amount of sample is required to be taken to ensure that the sample is representative when manual sampling is adopted, and blast furnace ironmaking belongs to continuous production, so that sufficient sampling time is difficult to be reserved. This makes it difficult to monitor the change in the actual particle size of the coke in some blast furnaces without automatic sampling. Disclosure of Invention In order to solve the above problems, an object of an embodiment of the present invention is to provide a method for determining whether the coke particle size is normal by using a distribution parameter. A method for judging whether the coke grain size is normal by using cloth parameters, comprising the following steps: step 1, collecting coke batch weight, jacking and opening of a throttle valve and corresponding distributing time when the coke particle diameter is normal in the blast furnace ironmaking process; Step 2, removing the coke weighing, the jacking and the opening of the throttle valve which are not in the set range as abnormal data to obtain the coke weighing, the jacking and the opening of the throttle valve after abnormal data are removed and the corresponding distribution time; step 3, carrying out normalization verification and descriptive statistics on distribution time data under preset batch weights and preset jacking combinations; Step 4, when the distribution time data corresponding to the preset weight and the preset jacking combination accords with normal distribution, determining the normal state operation range of the distribution time by using a probability density function of the normal distribution; And 5, when the distribution time exceeds the upper limit and the lower limit, the coke particle size is abnormal. Preferably, in the step3, when the distribution time data corresponding to the preset lot weight and the preset pressing combination do not conform to the normal distribution, the step 2 is executed again. Preferably, in step 4, the probability density function of the normal distribution is: Where σ represents the standard deviation, μ represents the mean, and σ 2 represents the variance. Preferably, in step 4, a value when the probability density function of the normal distribution is used to calculate the probability of 5% for each of the two tails is used as the normal state operation range of the distribution time. Preferably, when the distribution time is continuously smaller than the lower limit, the coke particles are smaller, and when the distribution time exceeds the upper limit, the particle size is larger. The invention also provides an electronic device, which comprises a bus, a transceiver, a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the transceiver, the memory and the processor are connected through the bus. The invention also provides a computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements the steps of the above method for judging whether the coke particle size is normal by using the cloth parameter. According to the sp