KR20020016227A - Performance evaluation and diagnosis system of baghouse system - Google Patents

Abstract

PURPOSE: A performance evaluation and diagnosis system of a baghouse system is provided which synthetically analyzes and evaluates performance of the baghouse system in real-time, and accurately diagnoses the baghouse system. CONSTITUTION: The performance evaluation and diagnosis system of a baghouse system comprises a measuring means which is installed on an entrance duct of the baghouse system so as to measure conditions of gases flown into a body(2) through the entrance duct; a measuring means which is installed at the body so as to measure conditions of the gases flown into the body(2) and filtration conditions; a measuring means which is installed at an air tank(3) so as to measure conditions of compressed air supplied to the body; a measuring means which is installed at a stack(6) so as to measure conditions of an exhaust gas filtered in the body; and a means which is installed at an operation room(7) of the baghouse system, performs performance evaluation and diagnosis on the baghouse system based on the data measured by each of the measuring means, and outputs the results of the performance evaluation and diagnosis of the baghouse system.

Description

Performance evaluation and diagnosis system of baghouse system

The present invention relates to a performance evaluation and diagnostic system of a filter dust collection system, and more particularly, a performance evaluation and diagnosis system of a filter dust collection system capable of comprehensively analyzing, evaluating and accurately diagnosing the performance of the filter dust collection system in real time. It is about.

Generally, in order to collect dust contained in gas or air, various techniques, such as a filter dust collection technique, an electrostatic dust collection technique, and a washing dust collection technique, are proposed. Among these collection methods, the filter dust collecting technique is a method of collecting dust contained in the exhaust gas using a filter cloth. Such filter dust collection technology can be used mostly in the dust generation process of the industry, the typical industrial process is usefully used in the steel process, incineration process, cement process, combustion process, papermaking process, coke process. On the other hand, the filter dust collector used in such a filter dust collection technique may be classified into various types, such as the type of filter cloth used, the method of installing the filter cloth in the dust collector, the method of dedusting dust collected on the surface of the filter cloth. Among these, there are largely a dust removal method, such as a vibration cleaning method, a shake air cleaning method, a reverse air cleaning method, and a pulse-jet cleaning method. Among them, the most widely used pulse jet method is a method of periodically spraying high-pressure compressed air to the filter cloth in the opposite direction to the filtering direction to dedust dust adhered to the surface of the filter cloth using its impact force. One dust collector is called a pulse jet filtration dust collecting system. In addition to this, there is a vibration dedusting type filter dust collecting system which periodically shakes the filter cloth to dedust, and a backwash type filter dust collecting system which periodically supplies the backwash air in the opposite direction to the filtering direction to dedust.

On the other hand, such a filter dust collection system must comprehensively analyze and diagnose the performance of each component or the system in order to maintain the optimal performance.

However, there is no method and system for comprehensively analyzing and diagnosing the filter dust collecting system in the related art, and each time when a problem occurs in the dust collecting system, the dust concentration, flow rate, dust removal pressure, etc. are individually measured and analyzed. The performance of the dust collection system has been evaluated or diagnosed. As such, there is a problem that a lot of manpower, time, equipment, etc. must be mobilized to measure all variables simultaneously at the same time by performing individual measurements on the main factors affecting the performance of the dust collecting system.

In addition, since it is difficult to secure a lot of data in real time, it is difficult to comprehensively evaluate the performance of the dust collecting system, and there is a problem in that the system cannot be accurately diagnosed.

Accordingly, the present invention has been invented to solve the above-described problems, and an object of the present invention is to provide a system capable of comprehensively determining the performance of the filter dust collecting system and accurately diagnosing the system.

It is another object of the present invention to provide a performance evaluation and diagnosis system for a filtration dust collecting system which can obtain data comprehensively by simultaneously measuring the main components of the filtration dust collecting system in real time.

It is still another object of the present invention to provide a performance evaluation and diagnosis system for a filter dust collection system which can quickly and cheaply and accurately perform the determination and diagnosis of the performance of the filter dust collection system.

1 is a configuration diagram schematically showing a performance evaluation and diagnostic system of the filter dust collecting system according to the present invention.

Figure 2 is a schematic diagram showing the installation of the performance evaluation and diagnostic system of Figure 1;

Figure 3 is a graph showing the dust emission concentration of the filter dust collection system detected using the performance evaluation and diagnostic system according to the present invention.

Figure 4 is a graph showing the pressure loss of the filter dust collecting system body detected using the performance evaluation and diagnostic system according to the present invention.

Figure 5 is a graph showing the outlet flow rate of the filter dust collecting system detected using the performance evaluation and diagnostic system according to the present invention.

Figure 6 is a graph showing the inlet temperature of the filter dust collecting system detected using the performance evaluation and diagnostic system according to the present invention.

7 is a graph showing the dedusting pressure of the filter dust collecting system detected using the performance evaluation and diagnostic system according to the present invention.

8 is a graph showing the inlet humidity of the filter dust collecting system detected using the performance evaluation and diagnostic system according to the present invention.

♠ Explanation of symbols on the main parts of the drawings.

10: Inflow dust concentration meter 12: Inflow velocity meter

14: Inflow temperature measuring instrument 16: Inflow humidity measuring instrument

18: dust collection flow meter 20: dust collection temperature meter

22: pressure loss measuring instrument 24: air pressure measuring sensor

26: emission dust concentration meter 28: emission flow rate meter

30: exhaust temperature measuring instrument 32: data collection device

34: processor 36: output device

The above objects are an inlet duct for sucking gas generated in an industrial process, a main body with a filter cloth for filtering the gas flowing from the inlet duct, an air tank for supplying compressed air for dedusting the filter cloth to the main body; Evaluating and evaluating the performance of the dust collecting system comprising an outlet duct for discharging the filtered gas from the main body, a stack for discharging the exhaust gas from the outlet duct to the outside, and a cab for operating and controlling the entire system. A performance evaluation and diagnostic system of a filtration dust collecting system for diagnosing a gas, comprising: measuring means installed in an inlet duct of the filtration dust collecting system and measuring a state of a gas flowing into a main body through an inlet duct; Measurement means installed in the main body, for measuring a state of the gas introduced into the main body and a filtration state; Measurement means installed in the air tank, for measuring a state of compressed air supplied to the main body; Measuring means installed in the stack and measuring a state of the exhaust gas filtered from the main body; And means installed in the driver's seat of the filtration system, for performing performance and diagnosis of the filtration system based on the data measured by the respective measuring means, and outputting the results. It can be achieved by the performance evaluation and diagnostic system of the system.

Hereinafter, a preferred embodiment of the performance evaluation and diagnostic system of the filter dust collecting system according to the present invention will be described in detail with reference to the accompanying drawings.

First, referring to FIGS. 1 and 2, the performance evaluation and diagnostic system of the filter dust collecting system according to the present invention is basically installed in connection with the filter dust collecting system. As shown in FIG. 2, the filtration system is connected to a system or facility that performs various industrial processes such as steel, incineration, cement, combustion, papermaking, and the like to suck gas generated therefrom. An inlet duct 1 is provided, and the body duct 2 having a constant volume is connected to the inlet duct 1 to collect such gas. The main body 2 is, of course, provided with a filter cloth (not shown) to purify the gas by separating dust mixed with the gas. The main body 2 is also provided with an air tank 3 for supplying compressed air into the main body in order to desorb dust attached to the filter cloth when the gas is filtered. The main body 2 is connected with an outlet duct 4 for discharging the filtered gas, and the outlet duct 4 is provided with a blowing fan 5 for promoting the discharge of the gas. In addition, a chimney or stack 6 is provided at the end of the outlet duct 4 to actually discharge the purified gas to the outside. Of course, the filter dust collection system configured as described above is provided with a cab 7 for operating and controlling the system as a whole.

The performance evaluation and diagnosis system of the filter dust collecting system installed in the filter dust collecting system configured as described above is installed in the inlet duct 1 of the filter dust collecting system and measures the dust concentration of the gas flowing into the main body 2. 10, an inlet flow rate measuring instrument 12 installed at the inlet duct 1 for measuring the flow rate of the inlet gas, and an inlet temperature measuring instrument for measuring the temperature of the gas introduced at the inlet duct 1 ( 14) and an inflow humidity measuring device 16 for measuring the amount of moisture contained in the gas, which is also installed in the inlet duct 1 and flows into the main body. Here, it should be understood that the inflow dust concentration, the inflow velocity, the inflow temperature, and the inflow humidity mean the concentration of the dust contained in the inflow gas, the speed of the inflow gas, the temperature of the inflow gas, and the humidity of the inflow gas. In addition, the measurement device is understood to refer to various sensors and instruments capable of measuring or detecting the dust concentration, velocity, temperature, and humidity of the inlet gas described above.

Then, the performance evaluation and diagnostic system of the filter dust collecting system is installed in the main body 2 of the filter dust collecting system, and the dust collecting flow rate measuring instrument 18 for measuring the flow rate of the gas in the main body, and also the main body of the filter dust collecting system ( It is provided with 2) and is equipped with the dust-collecting temperature measuring device 20 for measuring the temperature of the gas in the main body.

Further, the performance evaluation and diagnostic system of the filter dust collecting system is provided in place of the main body 2 of the filter dust collecting system and includes a pressure loss measuring instrument 22 for measuring the pressure loss caused when filtration is performed in the main body of the filter dust collecting system. .

On the other hand, the performance evaluation and diagnostic system of the filter dust collecting system is installed in the air tank (3) for supplying air to the main body (2) of the filter dust collection system and flows into the main body (2) to increase the pressure of the air to remove the filter cloth An air pressure measuring sensor 24 for measuring is provided.

In addition, the performance evaluation and diagnostic system of the filter dust collection system according to the present invention is stacked in order to measure the air that is filtered in the main body (2) of the filter dust collection system and passed through the outlet duct 4 to the outside through the stack (6) It is equipped with various measuring instruments installed in (6). That is, the performance evaluation and diagnostic system according to the present invention is installed in the stack (6) of the filter dust collecting system and the exhaust dust for measuring the dust concentration of the gas or air that is filtered through the main body 2 and discharged through the stack (6) A concentration measuring device 26, an exhaust flow rate measuring device 28 installed on the stack 6 for measuring the flow rate of the exhaust gas, and an exhaust temperature measuring device for measuring the temperature of the gas discharged and installed in the stack 6 as well. 30 is provided. Here, the exhaust dust concentration, the discharge flow rate, the discharge temperature is the concentration of dust contained in the gas or air that is filtered out of the main body (2) gas or air to the outside through the stack (6), the velocity of the exhaust gas It is to be understood that this means the temperature of the exhaust gas. In addition, the term "measuring device" is understood to refer to various sensors and instruments capable of measuring or detecting the dust concentration, velocity, and temperature of the above-mentioned exhaust gas.

On the other hand, the performance evaluation and diagnostic system of the filter dust collecting system according to the present invention is provided with devices for processing the measured values from each measuring instrument or sensor as described above. That is, the data collection device 32 for converting and collecting the analog signal measured from each measuring device into a digital signal, connected to the data collection device 32, and stores the digital signal received therefrom in a file On the basis of a processing unit 34 such as a computer for executing a function evaluation and diagnostic program of the filter dust collection system, and a display or printer for outputting a stored file stored in the processing unit 34 or the result processed therein. And an output device 36.

Optionally, referring to the measurement ranges and specifications of the respective measurement devices and processing devices according to the preferred embodiment of the present invention, the measurement ranges of the inflow dust concentration meter 10 and the exhaust dust concentration meter 26 are 0-5000 mg / Nm. ³ , the measurement range of the inflow flow rate measuring instrument 12, the dust collection flow rate measuring instrument 18, and the discharge flow rate measuring instrument 28 is 0-30 m / s, and the measurement range of the pressure loss measuring instrument 22 is 0-500 mmAq. The measuring range of the measuring sensor 24 is 0-10 atm, and the relative humidity measuring range of the inflow humidity measuring device 16 is 0-100%. In addition, the channel of the data collection card 32 is preferably eight or more, and the processing device 34 is preferably a 486 or more computer. Of course, the processing device can perform daily, monthly, yearly data search, data analysis, statistics / distribution, and collect and monitor data measured in real time.

As a performance evaluation and screening system of the filter dust collection system according to the present invention configured as described above, the results of evaluating the performance of the filter dust collection system currently applied to the steelmaking process of the steel mill and performing a check on it are shown in the graphs of FIGS. 3 to 8. Is shown. Of course, each of these results was obtained by simultaneous and continuous measurements.

For example, the graph of FIG. 3 shows the measurement result of the dust concentration, measured by the emission dust concentration meter 26 installed in the stack 6 and processed by the processing apparatus and then output by the output apparatus; The graph of FIG. 4 shows the measurement result of the dust concentration measured by the pressure loss measuring instrument 22 installed in the main body 2 of the dust collecting system and processed by the processing apparatus and then output by the output apparatus; The graph of FIG. 5 shows the measurement result of the flow velocity of the exhaust gas measured by the exhaust flow rate measuring instrument 28 installed in the stack 6 and processed by the processing apparatus and then output by the output apparatus. 6 is a graph of the temperature of the inlet gas introduced into the main body, which is measured by the inlet temperature measuring instrument 14 installed in the inlet duct 1 of the dust collecting system and processed by the processing apparatus and then output by the output apparatus. The measurement results are shown; The graph of FIG. 7 shows the measurement result of the dust extraction pressure with respect to the filter cloth measured by the air pressure measuring sensor 24 installed in the compressed air storage tank 5 and processed by the output device and then output by the output device; The graph of FIG. 8 shows the measurement result of the inflow rate of the gas which flows into the main body 2 measured by the inflow rate measuring device 16 installed in the inlet duct 2 and processed by the output device, and then output by the output device. will be.

Of course, if the analog signal measured from the respective measuring instruments or sensors as described above is converted into a digital signal in the data acquisition device 32 and then input to the processing device 34 in the form of a file, the processing device based on this (34) evaluates the performance of the filter dust collection system or diagnoses the system by executing the performance evaluation and diagnostic program stored there.

As a result, according to the performance evaluation and diagnostic system of the filter dust collecting system according to the present invention, the main components of the filter dust collecting system and their performance indicators are measured in real time continuously and simultaneously, and based on this, comprehensively evaluate the performance of the system. Of course, since the problem can be accurately diagnosed the problem of the system has the effect of improving the usability.

While a preferred embodiment according to the present invention has been described above, it will be understood by those skilled in the art that various modifications and changes can be made without departing from the scope of the appended claims.

Claims (6)

An inlet duct for sucking gas generated in an industrial process, a main body with a filter cloth for filtering the gas flowing from the inlet duct, an air tank for supplying compressed air for dedusting the filter cloth to the main body, and Evaluating and diagnosing the performance of a filtration system comprising an outlet duct for discharging the filtered gas, a stack for discharging the exhaust gas from the outlet duct, and a cab for operating and controlling the entire system. In the performance evaluation and diagnostic system of the filter dust collection system for Measuring means installed in the inlet duct of the filter dust collecting system and measuring a state of gas flowing into the main body through the inlet duct; Measurement means installed in the main body, for measuring a state of the gas introduced into the main body and a filtration state; Measurement means installed in the air tank, for measuring a state of compressed air supplied to the main body; Measuring means installed in the stack and measuring a state of the exhaust gas filtered from the main body; And A dust collecting system, which is installed in the driver's seat of the filter dust collecting system, and comprises means for performing the performance and diagnosis of the filter dust collecting system and outputting the results based on the data measured by the respective measuring means. Performance evaluation and diagnostic system. According to claim 1, wherein the inlet gas state measuring means, An inlet dust concentration measuring instrument (10) installed in the inlet duct (1) of the filter dust collecting system and for measuring the dust concentration of the gas flowing into the main body (2); An inlet flow rate measuring device 12 installed at the inlet duct 1 to measure a flow rate of the inlet gas; An inlet temperature measuring device 14 installed at the inlet duct 1 to measure the temperature of the inlet gas; And an inflow humidity measuring device (16) installed in the inlet duct (1) for measuring the amount of water contained in the gas flowing into the main body. According to claim 1, wherein the gas state and the filtration state measuring means in the main body A dust collection flow rate measuring device 18 installed at the main body 2 of the filter dust collection system for measuring a flow rate of gas in the main body; A dust collecting temperature measuring device 20 installed in the main body 2 for measuring a temperature of gas in the main body; And a pressure loss measuring device (22) installed in the main body (2) for measuring a pressure loss generated when filtration is performed in the main body (2). According to claim 1, wherein the compressed air condition measuring means Filter dust collection, characterized in that it is installed in the air tank (3) for supplying air to the main body (2) of the filter dust collection system for measuring the pressure of the air for dedusting the filter cloth System performance evaluation and diagnosis system. According to claim 1, wherein the exhaust gas measuring means An emission dust concentration measuring device 26 installed on the stack 6 of the filter dust collecting system and measuring the dust concentration of the gas filtered through the main body 2 and discharged through the stack 6; Is installed in the stack 6 and the discharge flow rate measuring instrument 28 for measuring the flow rate of the exhaust gas, Installed in the stack (6) and the performance evaluation and diagnostic system of the filter dust collection system, characterized in that it comprises a discharge temperature measuring device (30) for measuring the temperature of the discharged gas. The method according to any one of claims 1 to 5, wherein the performance evaluation, diagnostic execution and output means of the system A data collection device 32 for converting and collecting analog measurement signals measured by the respective measuring devices into digital signals; A processing device 34 connected to the data collection device 32 for storing and storing the digital signals received therefrom into a file and executing a function evaluation and diagnostic program of the filter dust collection system based on this; And an output device (36) for outputting the storage file stored in the processing device (34) and the result processed therein.