KR20240059340A - System and method for monitoring reformer tube - Google Patents

Abstract

A reformer tube monitoring system according to an embodiment of the present invention includes a reformer tube in which a reforming reaction occurs, a supply line connected to one side of the reformer tube to supply a reaction gas to the reformer tube, and the other side of the reformer tube. A discharge line connected to the side, through which the reformed gas is discharged from the reformer tube, a measurement line branched from the discharge line to sample a portion of the reformed gas, and a measurement line provided on the measurement line to discharge the sampled reformed gas. It includes a measuring unit that acquires measurement data by measuring, and thus can monitor individual tubes using the Venturi effect and analyze the gas reformed from each tube individually or simultaneously.

Description

Reformer tube monitoring system and method {SYSTEM AND METHOD FOR MONITORING REFORMER TUBE}

The present invention relates to reformer tube monitoring systems and methods.

Reforming refers to the process of converting hydrocarbon fuel into gas containing hydrogen using a catalytic reaction. In general, a reformer packs a catalyst into a cylindrical tube, injects reaction gas, and supplies heat from the surroundings to produce reformed gas on the other side.

The reforming reaction is carried out in a reforming furnace in which a large number of catalyst-containing reformer tubes are arranged in parallel within which the steam reforming reaction proceeds. The external walls, top and bottom of the reforming furnace are composed of a number of layers of refractory material that withstand temperatures up to 1200°C. The reformer tubes are heated by a burner that directly heats the intermediate space between the reformer tubes, and heat transfer to the reformer tubes occurs by thermal radiation and convective heat transfer from the hot flue gas.

For efficient thermochemical conversion of gas in a reforming reaction, a catalyst and suitable temperature conditions must be provided.

However, partial clogging may occur inside the reformer tube under high temperature conditions due to catalyst packing, etc. When this phenomenon creates an empty space without a catalyst, an imbalance in temperature occurs and areas where no reaction occurs occur. At this time, if a local high-temperature phenomenon occurs, breakage and damage occur in the reformer tube. Tube damage that occurs in this way is currently measured periodically through visual monitoring through a window on the wall of the reformer combustion section. However, this method has the problem that accurate measurement is difficult due to high-temperature radiant heat, and measurement values vary depending on each individual's vision. Additionally, since this can only be measured after the tube is damaged, it is difficult to respond appropriately before a problem occurs.

Therefore, there is a need to develop a reformer tube monitoring system or monitoring method that can solve the above problems.

Prior Document 1: Korean Patent No. 10-1938752 Prior Document 2: Korean Patent No. 10-1855788

The present invention was created to solve the above problems. The object of the present invention is to monitor individual tubes using the Venturi effect and analyze the gas reformed from each tube individually or simultaneously to determine whether the reformer tube is abnormal. To provide a reformer tube monitoring system and method that can immediately determine.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

A reformer tube monitoring system according to an embodiment of the present invention includes a reformer tube in which a reforming reaction occurs, a supply line connected to one side of the reformer tube to supply a reaction gas to the reformer tube, and the other side of the reformer tube. A discharge line connected to the side, through which the reformed gas is discharged from the reformer tube, a measurement line branched from the discharge line to sample a portion of the reformed gas, and a measurement line provided on the measurement line to discharge the sampled reformed gas. It includes a measuring unit that measures and obtains measurement data.

Additionally, a plurality of reformer tubes may be provided to form a row, and the rows may be provided in plural numbers to form a column.

Additionally, the measurement line may branch from the discharge line and then rejoin the discharge line.

Additionally, the measurement line may have an ejector at its distal end and be inserted into the discharge line in a direction parallel to the flow direction of the reformed gas in the discharge line.

Additionally, the discharge line may include a first discharge line each connected to a plurality of reformer tubes and a second discharge line connecting the first discharge lines connected to the reformer tubes in parallel.

Additionally, the measurement line includes a first measurement line branching from the first discharge line and a second measurement line connecting each of the first measurement lines branched from the first discharge line connected to the reformer tube in parallel. can do.

Additionally, the measurement line may further include a valve that opens or closes the first measurement line.

In addition, the reformer tube monitoring system may further include a control unit that controls the opening or closing of the valve and an abnormality determination unit that receives measurement data obtained from the measurement unit and determines whether the reformer tube is abnormal.

In addition, after closing all the valves, the control unit opens the valve of the first measurement line communicating with the reformer tube that is the measurement object, and the abnormality determination unit receives the data measured by the measurement unit after opening and closing the valve of the control unit. , it is possible to determine whether there is an abnormality by comparing the measured data with the stored data stored in the database.

In addition, the abnormality determination unit determines that no abnormality has occurred when the value difference between the measured data and the stored data is less than or equal to the first set value, and the control unit outputs a signal to open and close another valve, and the measured data and the If the difference in the value of the stored data is greater than the first set value and less than the second set value, the analysis result of the measured data value is fed back to the database, and then the control unit outputs a signal to open and close another valve, and the measurement When the difference between the data value and the stored data value exceeds the second set value, an inspection signal for the reformer tube that is the measurement target may be output.

Additionally, the measuring unit may include at least one of a flow meter, thermometer, pressure gauge, and gas chromatography.

The reformer tube monitoring method according to another embodiment of the present invention includes the step of the control unit closing all valves of the measurement line and then opening the valve of the measurement line communicating with the reformer tube that is the measurement target. The measurement unit provided on the measurement line It includes a step of obtaining measurement data by measuring the sampled reformed gas, and a step of an abnormality determination unit determining whether there is an abnormality in the reformer tube by comparing the measured data with stored data stored in a database.

In addition, in the step of determining whether an abnormality exists, if the difference between the measured data and the stored data is less than or equal to a first set value, it is determined that an abnormality has not occurred, and the control unit outputs a signal to open and close another valve, If the difference between the measured data and the stored data exceeds the first set value and is less than or equal to the second set value, the analysis result of the measured data value is fed back to the database, and then the control unit outputs a signal to open and close another valve. And, when the difference between the measured data value and the stored data value exceeds a second set value, an inspection signal for the reformer tube that is the measurement target may be output.

A reformer tube monitoring system and method according to an embodiment of the present invention includes a reformer tube in which a reforming reaction occurs, a supply line connected to one side of the reformer tube to supply a reaction gas to the reformer tube, and the reformer tube. connected to the other side of the reformer tube, a discharge line through which the reformed gas is discharged, a measurement line branched from the discharge line to sample a portion of the reformed gas, and a measurement line provided on the measurement line to sample the reformed gas. It includes a measuring unit that measures gas and acquires measurement data. Accordingly, it monitors individual tubes using the Venturi effect, and analyzes the gas reformed from each tube individually or simultaneously to immediately check for abnormalities in the reformer tube. A reformer tube monitoring system and method that determines causality can be provided.

1 is a side view showing a reformer tube monitoring system according to an embodiment of the present invention.
Figure 2 is a plan view showing a reformer tube monitoring system according to an embodiment of the present invention.
Figure 3 is a flowchart showing a reformer tube monitoring method according to an embodiment of the present invention.
Figure 4 is a plan view showing a reformer tube monitoring system according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited or restricted by the following examples.

Additionally, when a component (or region, layer, section, etc.) is said to be “on,” “connected to,” or “coupled to” another component, it is directly placed/connected/on the other component. This means that they can be combined or a third component can be placed between them.

Terms such as “include” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but do not include one or more other features, numbers, or steps. , it should be understood that it does not exclude in advance the possibility of the existence or addition of operations, components, parts, or combinations thereof.

In order to clearly explain the present invention, detailed descriptions of parts unrelated to the description or related known technologies that may unnecessarily obscure the gist of the present invention have been omitted, and reference signs are added to components in each drawing in this specification. In this regard, identical or similar reference signs are used to designate identical or similar components throughout the specification.

Additionally, terms such as “below,” “on the lower side,” “above,” and “on the upper side” are used to describe the relationship between the components shown in the drawings. The above terms are relative concepts and are explained based on the direction indicated in the drawings.

In addition, terms or words used in this specification and patent claims should not be construed as limited to their usual or dictionary meanings, and the inventor should appropriately define the concept of terms in order to explain his or her invention in the best way. It must be interpreted with meaning and concept consistent with the technical idea of the present invention based on the principle that it can be done.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

One embodiment

Referring to Figure 1, the reformer tube monitoring system according to an embodiment of the present invention includes a reformer tube 10, a supply line 20, a discharge line 30, a measurement line 40, and a measurement unit 50. do.

First, a reforming reaction occurs inside the reformer tube 10. The supply line 20 is connected to one side of the reformer tube 10 and supplies a reaction gas to the reformer tube 10. The discharge line 30 is connected to the other side of the reformer tube 10, and the reformed gas is discharged from the reformer tube 10.

In the reformer tube monitoring system according to an embodiment of the present invention, the measurement line 40 is branched from the discharge line 30 to sample a portion of the reformed gas, and the measurement unit 50 is connected to the measurement line 40. It is provided on the bed, and measurement data is obtained by measuring the sampled reformed gas.

As a result, the monitoring system according to the present invention can monitor individual tubes, analyze the gas reformed from each tube individually or simultaneously, and immediately determine whether there is an abnormality in the reformer tube. That is, conventionally, the user visually monitored through a window formed on the wall of the combustion section of the reformer, but according to the present invention, a part of the reformed gas is sampled from the measurement line and the measurement unit measures it to quickly identify and monitor any abnormalities in the tube. accuracy can be increased.

Hereinafter, each configuration of the reformer tube monitoring system will be described in detail with reference to FIGS. 1 and 2.

First, referring to FIG. 1, a reforming reaction occurs inside the reformer tube 10, it is placed inside a reforming furnace, and a catalyst may be packed inside the reformer tube 10. The reformer tube 10 receives a reaction gas through a supply line 20 connected to one side, and the reaction gas receives heat from a nearby burner to perform a reforming reaction.

The reformer tube 10 may be provided as a single tube or a plurality of tubes. When provided as a plurality of reformer tubes, the plurality of reformer tubes form a row, and the rows are again provided as a plurality of columns. ) can be achieved. The higher the reaction temperature or the purpose of large-capacity reforming, the more tubes of appropriate diameters can be configured as a bundle as needed. The reformer tubes 10 shown in FIGS. 1 and 2 are shown as examples, and a larger number of reformer tubes 10 may be arranged as needed. In this way, when a plurality of reformer tubes 10 are provided, a large amount of reformed gas can be secured.

Next, the supply line 20 is connected to one side of each reformer tube 10 to supply reaction gas to the reformer tube, and the discharge line 30 is connected to the opposite side of the reformer tube 10 from the one side. It is connected to the other side and discharges the reformed gas from the reformer tube 10.

1 and 2, if the discharge line 30 is described in more detail, the discharge line 30 includes a first discharge line 310, a second discharge line 320, and a third discharge line 330. may include. First, the first discharge line 310 may be connected to each of the plurality of reformer tubes 10. That is, the first discharge line 310 may be a line through which reformed gases discharged from each reformer tube 10 are discharged without being mixed.

Next, the second discharge line 320 may connect the first discharge lines 310 in parallel. That is, the second discharge line 320 may be a line where the reformed gas discharged through the first discharge line 310 is combined. For example, the second discharge line 320 forms one row. The first discharge lines 310 each connected to a plurality of reformer tubes 10 may be connected in parallel.

The third discharge line 330 may connect the second discharge lines 320 in parallel. For example, the second discharge line 320 connects the first discharge lines 310 each connected to a plurality of reformer tubes 10 forming one row, thereby forming a plurality of reformer tubes 10 forming a row. If the reformed gas discharged from the reformer tube 10 is mixed, the third discharge line 330 connects the second discharge lines 320 in parallel to form a plurality of reformers forming rows and columns. The entire reformed gas discharged from the tube 10 can be mixed and finally discharged.

As a result, the reformed gas discharged from each reformer tube 10 can ultimately move through one discharge line 30, thereby improving the economic efficiency of the reformer tube monitoring system.

Meanwhile, as shown in FIGS. 1 and 2, the measurement line 40 branches off from the discharge line 30 to sample a portion of the reformed gas.

Referring to FIG. 2, if the measurement line 30 is described in detail, the measurement line 40 may include a first measurement line 410, a second measurement line 420, and a third measurement line 430. The first measurement line 410 branches off from the first discharge line 310 and is installed in the form of a venturi to sample a portion of the reformed gas. That is, the first measurement line 410 branches off from the first discharge line 310 connected to each reformer tube 10, thereby individually sampling the reformed gas discharged from each reformer tube 10 and measuring and measuring it. It can be analyzed.

Next, the second measurement line 420 may connect the first measurement lines 410 in parallel. That is, the second measurement line 420 may be a line in which the reformed gas sampled in the first measurement line 410 is combined, and thus the discharged gas from the plurality of reformer tubes 10 connected to the first discharge line 310 Economic efficiency can be secured by mixing reformed gas and, if necessary, integrated measurement and monitoring of the reformed gas discharged from the first discharge line 310.

Finally, the third measurement line 430 may connect the second measurement lines 420 in parallel. Through this, the sampled reformed gas can be moved in a final mixed state through the third measurement line 430, which is one measurement line 40. This simplifies the structure of the reformer tube monitoring system and allows the reformed gas to move in a final mixed state. Monitoring can be carried out without leakage or waste, ensuring economic feasibility. In addition, as will be described later, the reformed gases sampled for measurement are combined back into the discharge line 30 through one measurement line 40, which also has the advantage of simplifying the structure of the monitoring system.

Describing the structure of the measurement line in detail, the first measurement line 410 branched from the first discharge line 310 is connected in parallel by the second measurement line 420, and the second measurement line 420 is After being connected in parallel by the third measurement line 430, they can be combined again into the third discharge line 330. Accordingly, the reformed gas that has been sampled for measurement can be re-injected into the discharge line 30 to minimize waste of the reformed gas.

At this time, the distal end of the third measurement line 430 is formed as an ejector 440, and is inserted into the discharge line 30 in a direction parallel to the direction of reformed gas flow. As a result, it is possible to ensure a smooth flow of the reformed gas joining the discharge line 30 after the measurement is completed in the measurement line 40, and further prevent the reformed gas in the discharge line 30 from flowing back into the measurement line 40. can be prevented.

Additionally, a valve 450 that opens or closes the first measurement line 410 may be included on the first measurement line 410. The user can monitor only the reformer tube 10 to be measured by opening only the valve 450 of the first measurement line 410 connected to the reformer tube 10 to be measured and closing the other valves 450. there is. In addition, if necessary, monitoring of a plurality of reformer tubes 10 can be performed simultaneously by opening several valves 450 at the same time, thereby enabling more efficient monitoring.

The measuring unit 50 may include at least one of a flow meter, a thermometer, a pressure gauge, and a gas chromatograph, but the type of the measuring unit is not limited thereto. As an example, the flow meter may be a mass flow meter, and the flow meter may be a measurement line ( 40) The flow rate flowing inside for a certain unit time can be measured. The thermometer and pressure gauge can measure the temperature and pressure of the fluid flowing inside the measurement line 40. Gas chromatography can simultaneously qualitatively and quantitatively analyze various components in the fluid flowing inside the measurement line 40. In this way, the measuring unit 50 according to an embodiment of the present invention can check the clogging phenomenon, pressure drop relationship, catalyst destruction degree, and dust generation amount inside the reformer tube 10 by measuring the sampled reformed gas.

The reformer tube monitoring system according to an embodiment of the present invention may further include a control unit (not shown) that controls the opening or closing of the valve 450.

When starting measurement, the control unit (not shown) may close all valves and then open the valve 450 of the first measurement line 410 that communicates with the reformer tube 10 that is the measurement target. Additionally, when it is desired to measure multiple reformer tubes 10 simultaneously, multiple valves 450 can be opened simultaneously.

In addition, the reformer tube monitoring system according to an embodiment of the present invention receives the measurement data obtained from the measurement unit 50 after opening and closing the valve of the control unit, compares the measurement data with the stored data stored in the database, and monitors the reformer tube 10. It may further include an abnormality determination unit (not shown) that determines whether there is an abnormality.

Below, the operation process of the abnormality determination unit (not shown) will be described in detail.

The abnormality determination unit (not shown) determines whether the difference between the measured data measured by the measuring unit and the stored data is less than or equal to the first set value, if it exceeds the first set value but is less than or equal to the second set value, or if it exceeds the second set value. You can divide it to determine whether something is wrong.

Here, the first set value is a value set by the user as needed. For example, it may be the same value as the value stored in the database or a value including an error range that is not judged to be abnormal. Next, the second set value is a value set by the user as needed. For example, when the measured data exceeds the second set value, it is determined that an abnormality requiring inspection has occurred inside the reformer tube 10. It can mean a possible value. Meanwhile, saved data may be data about values that the user stores as normal ranges, and may be stored in a database. A database may refer to a collection of data that integrates and manages stored data.

First, if the difference between the measured data and the stored data is less than or equal to the first set value, it is determined that no abnormality has occurred, and the control unit (not shown) may output a signal to open and close the other valve 450. This allows the reformer tube monitoring system to continuously perform additional monitoring or measurements on other reformer tubes 10.

However, when the control unit opens and closes all valves once or when the user determines that additional monitoring is not necessary, the signal output to open and close other valves can be stopped and monitoring can be stopped.

Next, if the difference between the measured data and the stored data exceeds the first set value and is less than or equal to the second set value, the analysis result of the measured data value is fed back to the database, and then the control unit (not shown) is connected to another valve (450). ) can output a signal to open and close. Here, feedback may include the process of analyzing the cause of an error in the measured data value, reflecting the result in the stored data, and storing it in the database. In the end, the case where the first set value exceeds the second set value is less than or equal to the second set value may mean a case where a difference occurs in the data value monitored for the reformer tube 10 and it is necessary to analyze it, but it is not necessary to inspect it. .

If the difference between the measured data and the stored data exceeds the second set value, an inspection signal for the reformer tube 10, which is the measurement target, may be output. The inspection signal is a signal indicating that an abnormality has occurred inside the reformer tube 10. The user can immediately confirm that a problem has occurred in the reformer tube 10 through the inspection signal, and through this, can decide whether to repair or inspect.

In this way, the reformer tube monitoring system according to an embodiment of the present invention can more accurately monitor whether an abnormality has occurred in the reformer tube by comparing the measurement data and stored data by the abnormality determination unit, and the user can take immediate action as necessary. can be taken. Additionally, compared to conventional visual monitoring methods, continuous monitoring can be performed over a long period of time, increasing the convenience of management and supervision.

Hereinafter, the monitoring method using the reformer tube monitoring system described above will be described in detail.

Referring to FIG. 3, the reformer tube monitoring method according to an embodiment of the present invention includes a valve opening and closing step (S1), a measurement data acquisition step (S2), an abnormality determination step (S3), a database feedback step (S31), It includes an inspection signal output step (S32) and another valve opening and closing step (S33).

Below, each step will be described in detail with reference to FIGS. 1 to 3 .

First, in the valve opening and closing step (S1), after the control unit (not shown) closes all the valves 450 of the measurement line 40, the valve of the measurement line 40 in communication with the reformer tube 10, which is the measurement target, is closed. It may include the step of opening (450). Here, the measurement line 40 may mean the first measurement line 410.

The valve 450 provided in the first measurement line 410 is opened and closed by a control unit (not shown). When starting measurement, the control unit (not shown) may close all valves and then open the valve 450 of the first measurement line 410 in communication with the reformer tube 10 that is the measurement target. If multiple reformer tubes 10 are to be measured simultaneously, multiple valves 450 may be opened simultaneously.

The measurement data acquisition step S2 may include a step in which the measurement unit 50 provided on the measurement line 40 measures the sampled reformed gas.

The measuring unit 50 may include at least one of a flow meter, a thermometer, a pressure gauge, and a gas chromatograph, and the type of the measuring unit is not limited thereto.

Measurement data may include data on flow rate such as mass flow rate, pressure, temperature, composition, and dust, but the type of data is not limited to this. By measuring and acquiring the measurement data, the measuring unit can check the clogging phenomenon, pressure drop relationship, catalyst destruction degree, and dust generation amount inside the reformer tube 10.

Referring to FIG. 3, the abnormality determination step (S3) may be a step in which the abnormality determination unit (not shown) compares the measured data with the stored data stored in the database to determine whether the reformer tube 10 is abnormal. . According to the reformer tube monitoring method of the present invention, the abnormality of the reformer tube 10 can be immediately and causally determined by analyzing the gas reformed and coming out of each reformer tube 10 through the abnormality determination step. .

In the abnormality determination step (S3), a first set value and a second set value are set, and if the value difference (M) between the measured data and the stored data is less than or equal to the first set value (N1), the first set value (N1) is set. It is possible to determine whether there is an abnormality by dividing it into cases where it is below the second set value (N2) and cases where it exceeds the second set value (N2). The meanings of the first set value (N1), the second set value (N2), and the stored data are as described above.

If the value difference (M) between the measured data and the stored data is less than or equal to the first set value (N1), it is determined that no abnormality has occurred and another valve opening and closing step (S33) can be performed. If the value difference (M) between the measured data and the stored data exceeds the first set value (N1) and is less than or equal to the second set value (N2), after performing the feedback step (S31) of the analysis result of the measured data value to the database, , another valve opening and closing step (S33) can be performed. If the value difference (M) between the measured data and the stored data exceeds the second set value (N2), the inspection signal output step (S32) can be performed. By comparing the measured data with the set values and judging them, it is possible to take appropriate countermeasures according to the degree of the problem that has occurred without visually monitoring the inside of the reformer tube 10.

The database feedback step (S31) feeds back the analysis results of the measured data values to the database when the value difference (M) between the measured data and the stored data exceeds the first set value (N1) and is less than or equal to the second set value (N2). May include steps.

In the other valve opening and closing step (S33), when the difference (M) between the measured data and the stored data is less than or equal to the first set value (N1), it is determined that no abnormality has occurred, and the control unit (not shown) operates the other valve ( It may include outputting a signal to open and close 450). In addition, when the value difference (M) between the measured data and the stored data exceeds the first set value (N1) and is less than the second set value (N2), after going through the feedback step (S31) to the database, the control unit (not shown) It may include outputting a signal to open and close the valve 450.

In the inspection signal output step (S32), when the difference (M) between the measured data value and the stored data value exceeds the second set value (N2), an inspection signal of the reformer tube 10, which is the measurement target, may be output. As a result, it is possible to detect a reformer tube that needs replacement or repair before a visual problem occurs, and the user can check the output inspection signal to determine whether to replace or repair the reformer tube, and take appropriate response measures. can be taken.

After the other valve opening and closing step (S33) or the inspection signal output step (S32) is completed, monitoring can be terminated according to the user's settings or a new reformer tube (10) can be selected and restarted from the valve opening and closing step (S1).

Other embodiments

Another embodiment of the present invention is different from one embodiment in that monitoring is possible by integrating the reformer tubes 10 by row. Contents in common with one embodiment will be omitted as much as possible, and other embodiments will be described focusing on differences. In other words, it is obvious that if content that is not described in another embodiment is needed, it can be considered as content of one embodiment.

Hereinafter, with reference to FIG. 4, a reformer tube monitoring system and method according to another embodiment of the present invention will be described.

Referring to FIG. 4, in the reformer tube monitoring system according to another embodiment of the present invention, the first measurement line branches off from the second discharge line 320 and monitors the bundle of reformer tubes 10 row by row. can do.

That is, the first measurement line branches off from the second discharge line 320, and the measurement unit 50 may be provided on the second measurement line 420 that connects each of the first measurement lines in parallel.

The discharge line 30 of the reformer tube monitoring system according to another embodiment of the present invention may include a first discharge line 310, a second discharge line 320, and a third discharge line 330. Discharge line 310 may be connected to each of the plurality of reformer tubes 10. The second discharge line 320 may connect the first discharge lines 310 in parallel. The third discharge line 330 may connect the second discharge lines 320 in parallel.

As a result, the reformed gas discharged from each reformer tube 10 can be moved through one discharge line and the economic efficiency of the reformer tube monitoring system can be improved.

The measurement line 40 of the reformer tube monitoring system according to another embodiment of the present invention may include a first measurement line 410 and a second measurement line 420. The first measurement line 410 is the first measurement line 410. 2 It branches off from the discharge line 320 and is installed in the form of a venturi, so that a portion of the reformed gas coming out of the reformer tube 10 can be sampled row by row. The second measurement line 420 may connect the first measurement lines 410 in parallel. The first measurement line 410 branched from the second discharge line 320 may be connected in parallel by the second measurement line 420 and then merged again into the third discharge line 330.

At this time, the distal end of the second measurement line 420 is formed as an ejector 440 and is inserted to face a direction parallel to the flow direction of the reformed gas in the discharge line 30. As a result, it is possible to ensure a smooth flow inside the discharge line 30 and the measurement line 40, and further prevent the reformed gas in the discharge line 30 from flowing back into the measurement line 40.

Additionally, a valve 450 that opens or closes the first measurement line 410 may be included on the first measurement line 410. The user opens only the valve 450 of the first measurement line 410 connected to the row of reformer tubes 10 to be measured and closes the other valves 450, thereby measuring the reformer tube 10 to be measured. Only rows can be monitored. If necessary, several valves 450 can be opened simultaneously to monitor multiple rows of reformer tubes 10 at the same time, thereby enabling more efficient monitoring.

In the reformer tube monitoring system according to another embodiment of the present invention, the first measurement line 410 is branched from the second discharge line 320 connecting the individual first discharge lines 310 in parallel, and the equipment is installed. In doing so, a simpler structure can be shown. In addition, since measurement can be performed for each row of the reformer tubes 10, economic efficiency can be improved compared to measurement of individual reformer tubes 10.

Although the present invention has been described above with limited examples and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following description will be provided by those skilled in the art in the technical field to which the present invention pertains. Various implementations are possible within the scope of equivalency of the patent claims.

10: Reformer tube
20: supply line
30: discharge line
310: first discharge line
320: second discharge line
330: Third discharge line
40: measuring line
410: first measurement line
420: second measurement line
430: third measurement line
440: Ejector
450: valve
50: measuring unit
S1: valve opening and closing phase
S2: Measurement data acquisition step
S3: Determination step for abnormalities
S31: Database feedback step
S32: Inspection signal output stage
S33: Other valve opening and closing steps
M: Difference between measured data and saved data
N1: first setting value
N2: Second set value

Claims (13)

A reformer tube in which a reforming reaction occurs;
a supply line connected to one side of the reformer tube to supply a reaction gas to the reformer tube;
a discharge line connected to the other side of the reformer tube, through which reformed gas reformed from the reformer tube is discharged;
a measurement line branching from the discharge line to sample a portion of the reformed gas; and
A reformer tube monitoring system that is provided on the measurement line and includes a measurement unit that measures sampled reformed gas to obtain measurement data. According to paragraph 1,
The reformer tube is,
Provided in plural pieces to form a row,
A reformer tube monitoring system in which the rows are provided in plural numbers to form a column. According to paragraph 1,
The measurement line is,
A reformer tube monitoring system that branches off from the discharge line and then rejoins the discharge line. According to paragraph 3,
The measurement line is,
A reformer tube monitoring system wherein the distal end is formed as an ejector and inserted into the interior of the discharge line, and is inserted to face in a direction parallel to the direction of reformed gas flow in the discharge line. According to paragraph 1,
The discharge line is,
a first discharge line connected to each of the plurality of reformer tubes; and
A reformer tube monitoring system comprising a second discharge line connecting in parallel the first discharge lines connected to the reformer tube. According to clause 5,
The measurement line is,
a first measurement line branching from the first discharge line; and
A reformer tube monitoring system comprising a second measurement line connecting in parallel each of the first measurement lines branching from the first discharge line connected to the reformer tube. According to clause 6,
The measurement line is,
A reformer tube monitoring system further comprising a valve that opens or closes the first measurement line. In clause 7,
a control unit that controls opening or closing of the valve; and
A reformer tube monitoring system further comprising an abnormality determination unit that receives measurement data obtained from the measurement unit and determines whether the reformer tube has an abnormality. According to clause 8,
The control unit,
After closing all the valves, open the valve of the first measurement line in communication with the reformer tube that is the measurement object,
The above abnormality determination unit,
A reformer tube monitoring system that receives measured data from the measuring unit after opening and closing the valve of the control unit and compares the measured data with stored data stored in a database to determine whether there is an abnormality. According to clause 9,
The abnormality determination unit,
If the difference between the measured data and the stored data is less than or equal to the first set value, it is determined that no abnormality has occurred, and the control unit outputs a signal to open and close another valve,
If the difference between the measured data and the stored data is greater than the first set value and less than the second set value, after feeding back the analysis result of the measured data value to the database, the control unit sends a signal to open and close another valve. Print out,
A reformer tube monitoring system that outputs an inspection signal for the reformer tube that is the measurement target when the difference between the measured data value and the stored data value exceeds a second set value. According to paragraph 1,
The measuring unit,
A reformer tube monitoring system comprising at least one of a flow meter, a thermometer, a pressure gauge, and a gas chromatograph. After the control unit closes all the valves of the measurement line, opening the valve of the measurement line communicating with the reformer tube that is the measurement target;
Obtaining measurement data by measuring the sampled reformed gas with a measurement unit provided on the measurement line; and
A reformer tube monitoring method comprising a step where an abnormality determination unit determines whether the reformer tube is abnormal by comparing the measured data with stored data stored in a database. According to clause 12,
The step of determining whether there is an abnormality is,
If the difference between the measured data and the stored data is less than or equal to the first set value, it is determined that no abnormality has occurred, and the control unit outputs a signal to open and close another valve,
If the difference between the measured data and the stored data is greater than the first set value and less than the second set value, after feeding back the analysis result of the measured data value to the database, the control unit sends a signal to open and close another valve. Print it out,
A reformer tube monitoring method for outputting an inspection signal for a reformer tube that is a measurement target when the difference between the measured data value and the stored data value exceeds a second set value.

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