JPS5882134A - Temperature measuring apparatus for coke oven - Google Patents

Abstract

PURPOSE:To enable actions of the opening of the lid of a flue nozzle, temperature measurement of the inside of a fuel chamber and the closing of the lid of the flue nozzle after the measurement to be continued successively by conducting the opening and closing actions of the lids of the flue nozzles only when a measuring vehicle moves from respective predetermined directions of the flue nozzles. CONSTITUTION:When the lever 26 of a flue nozzle is pushed from a direction indicated by an arrow G, the laver 26 moves about the axis 27 and the linear part 26a strikes a stopper 28 to push it, thereby the lever 26 and an arm 25 pivot in one body together with a shaft 23. Upon rotation of the shaft 23, the part for opening or closing the lid which is attached to the shaft 23 pivots to open the lid 21 with the shaft 23 as the fulcrum. On the other hand, when the lever 26 is pushed from a direction indicated by an arrow H, only the lever 26 pivots about the axis 27. Accordingly, when the measuring vehicle moves along the rail laid on the furnace body, a lid opening member 14 and a lid closing member 16 which are mounted on the measuring vehicle successively push the lever 26 to repeatedly conduct the lid opening, measuring and the lid closing actions successively only with the predetermined flue nozzle.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a furnace temperature measuring device for a coke oven having a large number of carbonization chambers.

Generally, a coke oven is formed of a furnace group in which independent carbonization chambers and combustion chambers are arranged alternately.

On the other hand, the carbonization time from when the coal is charged into the carbonization chamber until it is fired is influenced by external conditions such as the moisture content and particle size of the charged coal, but most of it is determined by the temperature of the combustion chamber. Ru. Therefore, temperature measurement in the combustion chamber is one of the important requirements for controlling coke manufacturing conditions.

Conventionally, the temperature of the combustion chamber has been measured manually using an optical pyrometer and has to be measured over a relatively short period of time. In addition, this temperature measurement requires a considerable amount of time even for an experienced person, making it difficult to measure all combustion chambers in a short time, and there are also disadvantages such as large human errors. . Also, as a wide temperature measurement method using an optical pyrometer, there is a method of measuring by installing a thermocouple in the upper space of the combustion chamber,
There is a method of measuring by installing a thermocouple inside the refractory material above the partition wall or hairpin between adjacent combustion chambers. However, among these measurement methods, the former method requires a complicated heat transfer mechanism.

The measured value pulsates due to draft turbulence, gas flow velocity, etc., and there is a problem in understanding it as a representative value of the furnace temperature. In addition, the latter method measures the temperature inside the refractory, so it has the disadvantage that the measured value lags behind the temperature change inside the combustion chamber. This is not a satisfactory method of measurement.

The object of the present invention is to eliminate the above-mentioned drawbacks of the conventional methods, and is to measure the furnace temperature continuously in a short period of time while a vehicle is running above the light from the bottom of the combustion chamber. An object of the present invention is to provide a coke oven furnace temperature measuring device.

Furthermore, as a direct object of the present invention, while the vehicle is traveling to each location to be measured, opening the lid of the 7 Reu nozzle, measuring the temperature inside the combustion chamber, and closing the lid after measurement can be performed in sequence and in succession. An object of the present invention is to provide a coke oven furnace temperature measuring device.

The details of the furnace temperature measuring device of the present invention will be explained below. Regarding the furnace temperature measurement of a coke oven, there are generally two methods: measuring the temperature of each combustion chamber along the direction of the furnace bed, and measuring the temperature in the direction of the length of the furnace.

First, measurement of temperature in the direction of the furnace will be explained.

In a coke oven, generally half of the burners in the combustion chamber that are connected in the longitudinal direction of the combustion chamber burn,
After a predetermined period of time, combustion is performed on the other half, and combustion on the previously burning side is stopped, and this is performed alternately. Also, if the free nozzle is exposed during combustion, the temperature of the flame inside the combustion chamber will have to be measured, making it impossible to measure the temperature of the bottom brick surface that is desired. Furthermore, the temperature of the combustion chamber is low at the extruder side and increases with a temperature gradient toward the exit side from the kiln, reaching the highest temperature at the exit side from the kiln. The average temperature of the combustion chamber is at the center in the furnace length direction. Therefore, it is possible to measure the temperature inside the combustion chamber from the flue nozzle closest to the center of the flue nozzles on the side where combustion is stopped, without being affected by the combustion in the room, and to measure the average temperature of the combustion chamber. This is desirable. Therefore, it is best to measure the row of flue nozzles that are closest to the center and lined up in the direction of the furnace cluster when combustion has stopped.

□There are typically two types of structures for coke oven heating flame channels. One of them is a structural style represented by an Otto furnace. For example, in Fig. 1, each combustion chamber 1,
2, 3, 4. . . . odd numbered combustion chambers 1, 3.・
. . . burns first on the extruder side 1a, %a, . . . in the even-numbered combustion chambers 2, 4.・Pa is on the kiln exit side 2b, 4b
, . . . are burned, and after a certain period of time (for example, 20 minutes), the above-mentioned combustion is stopped, and combustion is started on the opposite side, that is, the odd-numbered one is on the exit side of the kiln, and the even-numbered one is on the extruder side. In other words, if we consider only the flue nozzle on the two sides closest to the center of the two halves divided from the center of each combustion chamber, the burning part is as shown by the broken line, line A or B in Figure 1. It becomes staggered. For this reason, if you want to continuously measure the temperature of each combustion chamber in the direction of the furnace using a thermometer installed on the vehicle, the vehicle should travel along the dashed line A or B in Figure 1 for the part where combustion has stopped. It is necessary to do so. However, it is practically difficult to open/close the lid and perform measurements while the vehicle is running in this manner without stopping the vehicle.

In the case of an Otto furnace, in the case of an Otto furnace, every other flue nozzle lined up on the broken SC or D in Fig. 1 is opened, the lid is opened, the temperature is measured, and the lid is closed in the furnace direction. When the location is converted, measure every other remaining flue nozzle in the opposite direction. That is, in FIG. 1, measurements are taken for the odd-numbered combustion chambers starting from the combustion chamber 1 along the broken line C, and when the other end is reached, the measurement is made for the even-numbered combustion chambers by moving in the opposite direction at φ. For this reason, in the above example, the lids of even-numbered combustion chambers are not opened on the outward journey.
On the return trip, the lids of odd-numbered combustion chambers are prevented from being opened.

Next, in the structural style typified by the Karl Steel furnace, both combustion chambers are located on the same side (for example, the extruder side 1a,
2a,...) are first burned, and for a predetermined period of time (e.g. 2a,...) are burned.
After 0 minutes), the opposite side (the side exiting the kiln) is burned, and combustion is performed alternately at regular intervals. Therefore, in the case of this type of furnace, sequentially open the lids of all flue nozzles in the same direction on the side where combustion is stopped → Measure →
Just close the lid.

As mentioned above, measurements in the furnace group direction vary depending on the type of furnace, and in the case of an Otto furnace, measurements must be made every other time. The present invention is designed to enable measurement in any of the above cases as described in the following embodiments.

FIGS. 2 and 3 are a front view and a plan view of a measuring wheel used in the furnace temperature measuring device of the present invention. In these figures, 11 is a running vehicle that runs along the rails laid on the furnace bed;
2 is a thermometer such as a color thermometer, a radiation thermometer, an infrared thermometer, etc., which is installed in a direction perpendicular to the traveling direction of the vehicle 11, and is supported by a support arm 13 at a position where the vehicle is running. ing.

Therefore, when the lid of the flue nozzle is open, the furnace temperature is measured by detecting the light coming from the bottom of the furnace. 14 and 14' are members for opening the lid, and as shown in FIG. 4, they are plate-shaped and are supported horizontally by support plates 15 and 15'.

Reference numerals 16 and 16' denote lid closing members, which are supported by support plates 17 and 17' as shown in FIG. 5, and can rotate only in the directions indicated by arrows in FIG. 2, respectively.

Figures 6 and 7 are views showing the lid of the flue nozzle used in the present invention, with Figure 6 being a plan view and Figure 7 being a side view.

In these figures, 2o is the cylindrical opening of the flue nozzle, 21 is the lid, and 22 is the cylindrical opening 20 of the flue nozzle.
The bearing that holds the shaft 23 and has one end fixed to the side surface of the
4 is a lid opening/closing plate fixed to the shaft 23; 25 is an arm fixed to one end of the shaft 23; 26 is the arm 2 connected to the shaft 27;
It is mounted so as to be rotatable about the shaft 27 by a lever connected to the shaft 27.

Further, the arm 25 and the shaft 27 are fixed or rotatable. 28 is a stopper provided on the arm 25.

As shown in FIG. 8, the lever 26 in the above-mentioned lid structure is partially composed of a straight portion 26a and a curved portion 26b. Therefore, when Leno<-26 is pushed in the direction of arrow G, Leno<-26 tries to turn around the shaft 27, but the linear portion 26a hits the stopper 28 and pushes it further, so that Leno<-26 The arm 25 rotates together with the shaft 23. As the shaft 23 rotates, the lid opening/closing part 24 fixed thereto rotates around the shaft 23 to open the lid 21. On the other hand, when lever 26 is pushed in the direction of arrow H, only Leno (-26) rotates around shaft 27.

In the present invention, in the case of an Otto furnace, the lids having the structure described above are installed in alternating directions as shown in Figure 9, and in the case of a Karl Steel furnace, they are installed in the same direction as shown in Figure 10. As shown in Figure 9 or Figure 10, the measuring car, which has already been described, moves along the rails laid on the furnace bed and sequentially opens only the designated flue nozzles → measures → the lids. Repeat closing.

The measurement of the combustion chamber by the furnace temperature measuring device of the present invention will be explained below.

First, we will discuss the case of measuring in the direction of the furnace furnace in an Otto furnace. Even-numbered combustion chambers 2 and 4 among the combined twist combustion chambers
．． The extruder sides 2a, 4a,... of... are burning, while the kiln exit sides 1b, 3b,... of the odd-numbered combustion chambers 1, 3°... are burning. do. In that case, for example, if measurement is performed on the extruder side, the odd-numbered la, 3a, . . . have stopped burning and can be measured. In this case, if the measuring wheel is run from the direction of the combustion chamber 1 as shown in FIG. 9, the measuring wheel will first reach the flue nozzle of the combustion chamber 1. Here, since this flue nozzle is provided with a lid as shown in Figure 9, the member 14 installed on the measuring wheel is used to open the lid.
comes into contact with. In this case, the lid opening member 14 pushes the lever 26 from the direction of arrow G in FIG. 8, so that the lid is opened as already explained. As the measuring car further travels, the thermometer 12 passes over the flue nozzle with its lid open, so that the temperature at the bottom of the furnace is measured.

Subsequently, when opening the lid, the member 1 passes the position of the lever 26, but since the lid is already open, there is no change.

Further, since the lid closing member 16' comes into contact with the opened lid, the lid is pushed to close the lid. As the measuring wheel advances further, it reaches the flue nozzle of the combustion chamber 2, and the member 14 for opening the lid comes into contact with the lever. However, since the even-numbered combustion chambers have lids in the opposite direction to the odd-numbered combustion chambers, the arrow H in Fig.
The lever must be pushed in the direction of . Therefore lever 2
Only 6 rotates and the lid cannot be opened. Similarly, when opening the lid, the member 14' also passes through. In this way, the measuring wheel passes over the combustion chamber 2 without opening the lid and therefore without measuring the temperature. For the odd-numbered combustion chambers where combustion has stopped, the lid is opened, the temperature is measured, and the lid is closed, while for the even-numbered combustion chambers where combustion is in progress, the gas simply passes through. .

In this way, travel in the direction of the furnace group is completed, and temperature measurements of all combustion chambers where combustion has stopped are completed. After that, when the combustion point is replaced, if the measurement car is run in the opposite direction, the even-numbered combustion chamber in which combustion has been stopped will undergo the operation of opening the lid, increasing the temperature to 1 constant, and closing the lid. Regarding the odd-numbered combustion chambers, the lids are not opened, closed, or measured at all; they are simply passed through. When the measuring wheel returns to the starting position, the temperature measurements for all combustion chambers are completed.

Next, the case of a Karl Steel furnace will be explained.

In the case of this type of furnace, a lid is attached to the flue nozzle used for measurement as shown in FIG. In other words, the lids are attached to each combustion chamber in the same direction. Then, when the combustion on the side with the lid that can be opened and closed by the measuring wheel according to the present invention is stopped, the measuring wheel may be moved in the direction in which the lid can be opened and closed. For example, the first
In the case of Figure 0, when the extruder side combustion is stopped, the furnace temperatures in all combustion chambers can be measured by running the furnace from the combustion chamber 1 side in another direction toward the furnace group.

Therefore, there is no need to take measurements back and forth, and after the end of the measurement, it is sufficient to return the measuring wheel to the starting position within 0 hours until the start of the next measurement.

In addition to measuring the combustion chamber temperature, the lid may be opened to observe or clean the interior of the chamber. If the measuring vehicle runs while the lid remains open, the lid closing member x6 may come into contact with the open lid. Particularly, as shown in FIG. 11, if the lid closing member pushes the lid further in the direction of opening the opened lid, this may cause a malfunction. However, in the device of the present invention, as shown in FIG. 5, the lid closing member can rotate in the opposite direction to the direction in which the lid is closed, so that the device can run without any trouble. Furthermore, when the measurement vehicle runs, the lid opening member 14 pushes the lever 26 to close the lid, which means that the lid that was forgotten to be closed is closed, and the temperature measurement from this flue nozzle is electrically protected.

There is also no possibility that the upper lid closing member 16' will hit the lid.

Although the above explanation has been made regarding measurements in the furnace group direction, it can also be applied to measurements in the furnace length direction. When measuring in the furnace length direction, the direction in which the lid is attached may be rotated by 90 degrees. Then, in exactly the same manner as described above, the probe is moved in the length direction of the furnace along the combustion chamber to be measured, and measurements are performed on the portion where combustion has stopped. Subsequently, after the combustion point is replaced, the remaining half of the measurements can be carried out. The time for these measurements can be automatically controlled using a timer or the like.

Measurements in the furnace length direction are meaningless if only a specific row, ie, a specific combustion chamber, are measured, but it is necessary to measure many, or even all, combustion chambers in the furnace group. For this purpose, the measurement vehicle needs to be able to move not only in the direction of the furnace length, but also in the direction of the furnace group. The combustion chamber to be measured may be determined by moving in the direction of the furnace, and then the measurement may be performed by moving in the direction of the furnace length. To do this, a first rail is laid in the direction of the furnace at both ends of the extruder side and the kiln exit side, and carts are placed to run on these rails, respectively, and a second rail is laid between the two rails in the direction of the furnace length. A measuring vehicle may be provided so that the measuring vehicle can run on this second rail. In other words, by moving the inner truck along the first rail in the direction of the furnace, the measurement car is moved along with the second rail in the direction of the furnace to position it in the combustion chamber to be measured, and then the measuring car is moved along the second rail in the direction of the furnace. The measurement can be carried out by driving the measuring vehicle.

As explained above, according to the furnace temperature measuring device of the present invention, since the groove measuring car is run independently of the charging car, temperature measurement can be performed at the time when it is necessary. Moreover, since the lid is opened/closed and the measurement is performed while the measurement vehicle is running without stopping during measurement, each flue nozzle can be continuously measured. Furthermore, it has the advantage that continuous measurements can be made in any type of furnace and any type of combustion.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the arrangement of the flue nozzle on the coke oven, Fig. 2 is a side view of the measuring wheel used in the device of the present invention, Fig. 3 is a plan view of the measuring car, and Fig. 4 is the part for opening the lid. 5 is a perspective view of the lid closing member, FIG. 6 is a plan view of the lid provided on the flue nozzle, FIG. 7 is a side view of the opening lid, and FIG. 8 is a diagram showing the lid opening/closing operation. , Figure 9 is a diagram showing the situation of lid installation in an Otto furnace, Figure 1O is a diagram showing the situation of lid installation in a Karl Steel furnace, and Figure 11 is a diagram showing the situation of lid installation in an Otto furnace. , 11... measurement car, 12.
...Thermometer, 14.14'...Lid opening is part, 16
．． 16'... Lid closing member, 20... Flue nozzle opening, 21... Lid, 25... Arm, 26...
Lever, 28...Stopper Applicant Mitsubishi Chemical Industries, Ltd. Agent Hiroshi Mukai Figure 1 Figure 2 14 14"< Figure 6 Figure 8 Figure 9

Claims (2)

[Claims] (1) Each flue to be measured is provided on the furnace of a coke oven in order to measure the furnace temperature through the flue nozzle, and combustion is performed sequentially through the opening of the flue nozzle using the thermometer while opening and closing the lid of the flue nozzle using the lid opening/closing member. A coke oven furnace temperature measuring device that measures room temperature, with a lid that opens and closes only when a measuring car runs in a specific direction determined for each flue nozzle. (2) The scope of the patent claims that the lid is provided with a lever for opening the lid, and when the lid opening/closing member pushes the lever from a specific direction, the lid opens, and when the lever is pressed from the opposite direction, only the lever rotates. (1) A coke oven furnace temperature measuring device.