Method for predicting clogging of distillation column(s) in a refinery, computer program and associated prediction system

    公开(公告)号:US12055926B2

    公开(公告)日:2024-08-06

    申请号:US17910869

    申请日:2021-03-17

    CPC classification number: G05B23/0283 B01D3/4211 G05B13/048 G05B23/024

    Abstract: The invention relates to a method for predicting flooding in a distillation column by machine learning including a constructing and training phase of a machine learning model obtained from previously collected data and from a set of sensors, an operational phase for predicting flooding(s), by collecting a current data flow until a buffer is filled, pre-processing data from the data buffer by predetermined cleansing and classification, synchronizing the data of the current set of clean and classified data, determining a value of a current variable representative of at least one current performance of the at least one distillation column, forming a current set of transformed data by calculating predetermined derivatives, and predicting the current state of said distillation column by applying said learning model to said current set of transformed data.

    PROCESS CONTROL SYSTEMS WITH SIMULATOR FOR USE WITH A MASS TRANSFER COLUMN

    公开(公告)号:US20230271103A1

    公开(公告)日:2023-08-31

    申请号:US18016484

    申请日:2021-06-25

    CPC classification number: B01D3/4211 B01D53/1412

    Abstract: An automatic control system is provided for controlling the operation of a mass transfer system that includes a mass transfer column. The automatic control system includes a field data collection device that collects process data from the mass transfer system, a data collection module for receiving and storing process data received from the field data collection device, and an online simulator that includes a column simulation module for calculating a column performance parameter from the process data.

    Vapor Splitter and Method for Adjusting Vapor Split Ratio

    公开(公告)号:US20180217618A1

    公开(公告)日:2018-08-02

    申请号:US15540021

    申请日:2017-01-27

    Inventor: Ki-Joon Kang

    Abstract: Disclosed is a vapor splitter including: a chimney tray dividing an internal space of a housing into an upper space and a lower space; a chimney provided on the chimney tray to enable the upper space and the lower space to communicate with each other; a cap covering the chimney with a gap therebetween such that a gas discharge hole is formed so that gas, coming out through the chimney, can be transferred to the upper space through the gas discharge hole; a liquid feeding unit for feeding liquid to the upper space; and a liquid discharging unit for discharging the liquid out of the upper space. The size of the gas discharge hole is adjusted by controlling the height of the liquid collected on the chimney. Further disclosed is a method of adjusting a vapor split ratio using the vapor splitter.

    DEVICE FOR REDUCING THE ALCOHOL CONTENT OF WINES AND OTHER ALCOHOLIC BEVERAGES

    公开(公告)号:US20170165589A1

    公开(公告)日:2017-06-15

    申请号:US15115475

    申请日:2015-01-27

    Inventor: Roberto FABBIAN

    Abstract: A device for reducing the alcohol content of wines and other alcoholic beverages, comprising a distillation column (71) of the liquid to be treated, a first sensor (31) for measuring the temperature of the liquid, a heating resistance (41) for heating the liquid, a second sensor (55) for measuring the temperature of the vapors in the column (71) and an outlet pipe (60) of the vapors, which is connected to a condenser (18) and then reaches a collection container (24), inside of which the vacuum is provided by means of a setting solenoid valve (20) and a vacuum pump (21), which are connected to a pressure sensor (19); an electronic control circuit (16) detects the measurements made by the temperature sensors (31, 55) and by the pressure sensor (19) and adjusts the power of the heating resistance (41) and the opening of the setting solenoid valve (20).

    WATER DISTILLING APPARATUS USING SATURATED AIR CURRENTS AND METHODS FOR MAXIMISING THE PERFORMANCE THEREOF

    公开(公告)号:US20150068886A1

    公开(公告)日:2015-03-12

    申请号:US14389940

    申请日:2013-04-02

    Applicant: TMW

    Abstract: One of these distilling apparatus (10) comprises two columns, an evaporation column (14) and a condensation column (16), separated by a partition (18) equipped with rows of slits dividing them into 4 distillation stages. The evaporation column (14) comprises plates with hydrophilic or wettable faces, and the condensation column comprises rectangular hollow-plate (21) heat exchangers (221-6). Cold water ascends in these exchangers and saturated humid hot air descends in the condensation column (16). A perforated sheet (251-4) increases the uniformity of the partial airflows descending between the plates. The water is heated in a boiler (34); the hot water is scattered at the top of the evaporation column and the air cooled in the condensation column is sucked downwards by a fan (34). The air flows in a closed circuit. Performance is maximised, after the top temperature TE2 (45 to 90° C.) and the mass flow rate QE0 of the scattered water have been set, by adjusting the mass flow rate QA1 of the sucked dry air in order to give the temperature TA of this air a preset value at the top of the lowest evaporation chamber. Next, the effective cross sections of the partition apertures are adjusted in order to bring the air exiting from the evaporation chambers of higher rank to other preset temperatures TA2 to TAN, the enthalpy curves of the air deviating from flat by 6, with a satisfactory flow rate of distilled water. Applications: production of fresh or very high purity water; production of concentrated industrial wastewater; production of high-concentration ethanol, acids or bases.

    Method of determining flood points of packed columns
    10.
    发明授权
    Method of determining flood points of packed columns 有权
    确定包装柱洪水点的方法

    公开(公告)号:US08449727B2

    公开(公告)日:2013-05-28

    申请号:US12765611

    申请日:2010-04-22

    Applicant: Brian Hanley

    Inventor: Brian Hanley

    Abstract: A flood point for a packed column is determined by providing a data set of gas pressure drop values as a function of gas flow rate values at several liquid flow rates through a packed column, known flood point value for one liquid flow rate, setting flood point values for higher liquid flow rates at values lower than the known flood point value, and setting flood point values for lower liquid flow rates at values higher than the known flood point value, followed by expressing gas flow rates for liquid flow rates as fractions of the flood point value for each respective liquid flow rate. At a constant gas pressure drop, the method then includes calculating an average fractional flood point value for the liquid flow rates and minimizing the standard deviation between the fractional flood point value at different liquid flow rates and the calculated average fractional flood point value by iteratively resetting fractional flood point values and recalculating the average fractional flood point value for the liquid flow rates, thus resulting in determining a flood point for the packed column at any liquid flow rate, and thereby producing a plot of pressure drop as a function of fraction of flood point at any liquid flow rate, or a mathematical expression thereof that can be used in a computer-implemented column design and process modeling.

    Abstract translation: 通过提供气体压降值的数据集作为气体流速值的数据集,通过填充柱的几种液体流速,已知的一种液体流量的洪水点值,设定洪水点来确定填充塔的洪水点 在低于已知洪水点值的值下提高液体流速的值,以及在高于已知洪水点值的值下设定较低液体流速的洪峰值,然后将液体流速的气体流速表示为 每个液体流量的泛洪点值。 在恒定的气体压降下,该方法包括计算液体流速的平均分数泛洪点值,并通过迭代重置来最小化不同液体流量下的分数泛洪点值与计算的平均分数洪峰值之间的标准偏差 重新计算液体流量的平​​均分数泛点值,从而确定任何液体流速下填充塔的洪水点,从而产生作为洪水分数的函数的压降图 指向任何液体流速,或其数学表达式,可用于计算机实现的列设计和过程建模。

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