CN-116925791-B - Pressure control method for single-hole coke oven carbonization chamber based on SOPRECO system

CN116925791BCN 116925791 BCN116925791 BCN 116925791BCN-116925791-B

Abstract

The embodiment of the disclosure discloses a single-hole coke oven carbonization chamber pressure control method based on SOPRECO systems. The method comprises the steps of obtaining attribute information of a single-hole coke oven and an index value of coal entering a single-hole coke oven carbonization chamber, inputting the attribute information and the index value into a pre-trained operation parameter prediction model to obtain an operation parameter group sequence of the single-hole coke oven carbonization chamber, sending the operation parameter group sequence to a control system so that the control system controls the pressure of the single-hole coke oven carbonization chamber according to the operation parameter group sequence and real-time data acquired by a sensor, and sending the operation parameter group sequence to the control system so that the control system controls the pressure of the single-hole coke oven carbonization chamber according to the operation parameter group sequence and the real-time data acquired by the sensor. The self-adaptive standard pressure value setting is realized.

Inventors

LV XINZHE
XIE HONGSONG
LI DEYI
ZHANG HAIBING
You Baofu
XU HAIDONG
JIA YAHONG
LI MIN

Assignees

山西亚鑫新能科技有限公司

Dates

Publication Date: 20260505
Application Date: 20230803

Claims (6)

1. The utility model provides a single hole coke oven carbonization chamber pressure control method based on SOPRECO system, single hole coke oven carbonization chamber's top is connected with the tedge, the tedge top is provided with the tedge lid, the tedge passes through the bridge pipe and is connected with the gas collecting tube, SOPRECO system includes monotonic valve and control system, monotonic valve set up in between bridge pipe and the isolation valve for adjust the flow area of bridge pipe department raw coke oven gas, the method includes: Acquiring attribute information of a single-hole coke oven and an index value of coal entering a carbonization chamber of the single-hole coke oven; inputting the attribute information and the index value into a pre-trained operation parameter prediction model to obtain an operation parameter group sequence of the single-hole coke oven, wherein each operation parameter group in the operation parameter group sequence corresponds to one operation stage, the operation parameter prediction model comprises a coal charging stage parameter prediction sub-model, a coking stage prediction sub-model and a coking stage prediction sub-model, wherein the coal charging stage parameter prediction sub-model, the coking stage prediction sub-model and the coking stage prediction sub-model all adopt a cyclic neural network as initial models, training the initial models by utilizing a historical operation data set, and stopping training when the training end condition is met to obtain the coal charging stage parameter prediction sub-model, the coking stage prediction sub-model and the coking stage prediction sub-model; The coal charging stage parameter predictor model takes the attribute information and the index value as input and outputs a first operation parameter set, the coking stage predictor model takes the attribute information, the index value and the first operation parameter set as input and outputs a second operation parameter set, the coke discharging stage predictor model takes the attribute information, the index value, the first operation parameter set and the second operation parameter set as input and outputs a third operation parameter set, and each operation parameter set comprises an operation stage identifier and an expected pressure value, and the operation stage identifier is used for representing one stage of a coal charging stage, a coking stage and a coke discharging stage; And sending the operation parameter group sequence to the control system so that the control system controls the pressure of the single-hole coke oven carbonization chamber according to the operation parameter group sequence and real-time data acquired by the sensor, wherein the real-time data acquired by the sensor comprises a single-hole carbonization chamber riser gas pressure signal and a position opening feedback signal of a water seal valve.
2. The method of claim 1, wherein prior to the acquiring attribute information of the single-hole coke oven and the index value of the coal entering the single-hole coke oven coking chamber, the method further comprises: The opening degree of the manual butterfly valve of the air suction pipe is adjusted to 70 percent so as to enlarge the adjustable range of the electrohydraulic valve of the air suction pipe; gradually closing the large circulation valve, and controlling the suction force before the primary cooler to be in a first preset pressure interval; The electro-hydraulic valve of the air suction pipe is regulated while the large circulation valve is closed, so that the pressure of the air collection pipe is between 130Pa and 150 Pa; and adjusting the electro-hydraulic valve of the air suction pipe to an automatic mode so as to be interlocked with the pressure of the air collection pipe.
3. The method of claim 2, wherein the control system controlling the pressure of the single-port coke oven coking chamber based on the sequence of operating parameter sets and real-time data collected by the sensor, comprises: In response to determining that the first coke oven is in a coal-charging-free coke pushing state, fully inputting SOPRECO systems of three sections of gas collecting pipes of the first coke oven, and simultaneously adjusting the opening of an electro-hydraulic valve of an air suction pipe and a manual butterfly valve of the air suction pipe of the second coke oven to ensure that the pressure of the gas collecting pipes of the second coke oven is unchanged; and sending notification information to the central control equipment of the chemical production plant.
4. A method according to claim 3, characterized in that the method further comprises: In response to receiving the fault signal, performing the following manual operation; The picture of the upper computer of the main control room is controlled at a manual position, and the electric output of opening and closing the valve is canceled; checking whether the air source is normal or not on site; The method comprises the steps of closing a water seal cover firstly in a coal loading stage, opening an isolation valve, closing the isolation valve firstly in a coke discharging stage, opening the water seal cover, and using a high-low pressure ammonia water ball valve as a standby in the coal loading stage, wherein when the flow of raw gas in the coal loading stage is larger than a preset flow threshold value, the high-low pressure ammonia water ball valve is opened.
5. The method according to claim 4, wherein the method further comprises: selecting an overhaul mode in a picture, and selecting manual control; Opening a single air cylinder air release valve to perform air release operation, wherein both the upper air release valve and the lower air release valve are opened for air release; Fixing and locking a fixed pin at the current position of the actuating mechanism, and if the current valve position cannot be fixed and locked, manually switching to the fixed and locked position to lock the fixed pin; Under the condition of manual adjustment, the pressure of the carbonization chamber is kept above 150 pa; When the coal is charged, the coal is locked at the fully opened position, and after the coal is charged, the coal is closed to 50%, and after half an hour, the coal is adjusted to the corresponding position according to the pressure of the carbonization chamber and is locked.
6. The method of claim 5, wherein the method further comprises: Before coal loading, the monotone valve is at the full-open position, and after coal loading, a coal loading end signal is forced to be fed, so that the monotone valve enters a working state; Setting valve positions manually in the coking process, wherein the set opening of the first coking stage is 40% -50%, the set opening of the second coking stage is 30% -40%, the set opening of the third coking stage is 25% -30%, the set opening of the fourth coking stage is 20% -30%, and the set opening of the fifth coking stage is 15% -20%; if the coke discharging car signal is not received, the coke signal is forcedly given to separate the program, the monotone valve is manually fully opened and is in a waiting state to wait for the next coal charging; the monotone valve is at the full-open position before the coal is charged and starts timing after the coal is charged; and preparing the single valve at the full-open position after coke discharging.

Description

Pressure control method for single-hole coke oven carbonization chamber based on SOPRECO system Technical Field The embodiment of the disclosure relates to the field of coke production, in particular to a single-hole coke oven carbonization chamber pressure control method based on SOPRECO systems. Background The coal coking chemical industry is a pillar industry in the metallurgical and chemical industries, and has important and irreplaceable supporting function for the development of the steel industry and the national economy in China. The coke oven is accompanied with a large amount of smoke overflow and pungent odor diffusion in the coking process, so that the coke oven has a large number of unorganized emissions and serious environmental pollution, and meanwhile, the coke oven has certain damage to equipment and an oven body. This problem can be effectively solved by applying SOPRECO system, i.e. single-hole carbonization chamber pressure regulating system. Wherein SOPRECO system adopts a monotone valve (hemispherical rotary valve structure), can realize continuous pressure regulation of a single-hole carbonization chamber, so that the bottom of the carbonization chamber of the coke oven always keeps micro positive pressure in the coking process, and can realize negative pressure operation of a gas collecting pipe, thereby controlling the escape of raw gas and greatly reducing the pollution of emissions to the environment. However, the inventors have found that when the carbonization chamber pressure is adjusted by the SOPRECO system, there are often the following technical problems: Firstly, manually setting standard pressure values at different stages, wherein in the actual generation process, the setting of the standard pressure values depends on manual experience, and self-adaptive standard pressure value setting cannot be realized; second, when SOPRECO systems fail, there is a lack of effective solutions, resulting in the escape of unorganized emissions; Thirdly, harmful gas is easy to generate in the production process, and when the harmful gas is accumulated to a certain concentration, the harmful gas is easy to damage the human body of production staff, so that the production staff is required to wear the labor protection tools during working, but some staff cannot wear the labor protection tools correctly due to negligence or mismatching, and the risk of human body damage is increased. Disclosure of Invention The disclosure is in part intended to introduce concepts in a simplified form that are further described below in the detailed description. The disclosure is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. Some embodiments of the present disclosure propose a single-hole coke oven carbonization chamber pressure control method based on SOPRECO system to solve one or more of the technical problems mentioned in the background section above. Some embodiments of the disclosure provide a single-hole coke oven carbonization chamber pressure control method based on SOPRECO systems, wherein the top of the single-hole coke oven carbonization chamber is connected with a rising pipe, the top of the rising pipe is provided with a rising pipe cover, the rising pipe is connected with a gas collecting pipe through a bridge pipe, the SOPRECO systems comprise a monotonic valve and a control system, the monotonic valve is arranged between the bridge pipe and an isolation valve and is used for adjusting the flow area of raw gas at the bridge pipe, the method comprises the steps of acquiring attribute information of the single-hole coke oven and an index value of coal entering the single-hole coke oven carbonization chamber, inputting the attribute information and the index value into a pre-trained operation parameter prediction model to obtain an operation parameter group sequence of the single-hole coke oven carbonization chamber, each operation parameter group in the operation parameter group sequence corresponds to one operation stage, the operation parameter prediction model comprises a coal loading stage parameter prediction sub-model, a coking stage prediction sub-model, and a coking stage prediction sub-model, the coal loading stage parameter prediction sub-model takes the attribute information and the index value as inputs and outputs a first operation parameter group, the coking stage prediction sub-model takes the attribute information, the index value and the first operation parameter group as inputs and outputs a second operation parameter group, the attribute information and the index value as inputs a second operation parameter group, the first operation parameter group and the coking stage prediction sub-coke stage prediction sub-model, and the first operation parameter group is used for inputting the expected operation parameter group and the operation parameter group to t