JP2020143985A - Automatic distillation testing device - Google Patents

Abstract

To improve the reliability of distillation testing.SOLUTION: An automatic distillation testing device 100 comprises: a distillation flask 110 storing a specified amount of petroleum sample; a heater 120 heating the petroleum sample; a temperature measurement body 130 measuring temperature of petroleum sample vapour; an inner pipe 141 connected to the distillation flask 110 and an outer pipe 142 covering the periphery of the inner pipe 141; an auxiliary heater 145 adjusting temperature of the outer pipe 142; a receptor 150 receiving condensate liquid condensed in the inner pipe 141 as distillate; a receptor installation chamber 151 holding the receptor 150 in a predetermined place and cooling the distillate in the receptor 150; a distillate amount measuring device 160; a cooling medium supply device 170 supplying cooling medium to the outer pipe 142; and a control device 180 reading vapour temperature of the petroleum sample measured by the temperature measurement body 130 and distillate liquid amount measured by the distillate amount measuring device 160, adjusting thermal dose of the heater 120 and temperature of cooling medium, and displaying the measurement result.SELECTED DRAWING: Figure 1

Description

The present invention relates to an automatic distillation test apparatus, for example, an automatic distillation test apparatus capable of improving the reliability of a distillation test.

In the construction and operation of an oil refinery, it is extremely important to know the properties of the oil to be refined for stable operation and quality maintenance of the plant. Therefore, the distillation test method is defined by Japanese Industrial Standards (JIS) K2254, and petroleum refining is carried out based on the test results of this test method. According to this standard, a predetermined amount of petroleum sample is taken in a flask and heated to evaporate the petroleum sample. The properties of petroleum are evaluated by displaying the relationship between the amount of the distillate in which the vapor is condensed and the temperature on a graph.

This standard assumes manual testing, but it is the first time because the work of checking the initial distillation droplets while controlling the temperature of the cooling medium and recording the distillation temperature and distillation amount is complicated. The automation of the detection of distillate droplets and the measurement of distillate temperature and distillate amount has already been realized by the automatic distillation test device. In this automatic distillation test device, not only the measurement of distillate temperature and distillate amount should be automated, but also the condenser tube should have a simple structure and the test should be carried out based on the JIS standard regardless of the sample collection amount. Is possible (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2008-286543

However, in the automatic distillation test apparatus according to the above proposal, when the petroleum sample is condensed, the wax contained in the petroleum sample is precipitated, and the accuracy of the distillation amount measurement is lowered, so that the reliability of the distillation test is lowered. There was a problem that it was damaged.

The present invention has been made to solve the above problems, and improves the reliability of the distillation test by suppressing the precipitation of wax contained in the petroleum sample when condensing the petroleum sample. It is an object of the present invention to provide an automatic distillation test apparatus capable of performing.

The automatic distillation test apparatus according to the present invention uses a distillation flask containing a predetermined amount of oil sample, a heater for heating the oil sample in the distillation flask, and the oil sample distilled in the distillation flask as a condensate. A receiving receiver, a connecting tube forming a connecting path connecting the distillation flask and the receiving, a condensing means provided at a desired position of the connecting tube and condensing the vapor of the petroleum sample, and the above. The configuration is provided with a temperature adjusting means for adjusting the temperature of the cooling medium flowing through the condensing means.

With the above configuration, the automatic distillation test apparatus according to the present invention can adjust the temperature of the cooling medium flowing through the condensing means to an appropriate temperature by adjusting the temperature of the cooling medium flowing through the connecting pipe by the temperature adjusting means. As a result, it is possible to prevent a situation in which the amount of distillate cannot be accurately measured because the wax content in the petroleum sample is excessively cooled and precipitated in the connecting pipe. Therefore, all the distilled petroleum samples can be measured, and the reliability of the distillation test can be improved.

Further, in the automatic distillation test apparatus according to the present invention, the condensing means has a cooling tube for forming a cooling passage through which the cooling medium for cooling the vapor of the petroleum sample generated in the distillation flask flows, and the cooling is performed. The temperature adjusting means is provided on the outside of the tube.

With the above configuration, the automatic distillation test apparatus according to the present invention is efficient because the condensing means has a cooling tube forming a cooling passage through which the cooling medium flows, and the temperature adjusting means is provided on the outside of the cooling tube. The temperature of the cooling pipe can be adjusted.

Further, the automatic distillation test apparatus according to the present invention includes a primary cooling medium system that supplies a primary cooling medium to the condensing means, a secondary cooling medium system that cools the distillate received by the receiver, and the primary cooling medium. The configuration includes a Pelche element that cools the cooling medium and heats the secondary cooling medium with the heat taken from the primary cooling medium.

With the above configuration, the automatic distillation test apparatus according to the present invention can efficiently utilize heat energy by heat exchange between the primary cooling medium system and the secondary cooling medium system.

Further, the automatic distillation test apparatus according to the present invention includes a temperature measuring body for measuring the temperature of the steam of the petroleum sample generated in the distillation flask and a distillate for measuring the amount of distillate received by the receiver. A control device further comprising a liquid amount measuring device, which displays the measurement result of the steam temperature of the petroleum sample measured by the temperature measuring body and the distillate amount measured by the distillate amount measuring device. The configuration is provided with.

With the above configuration, in the automatic distillation test apparatus according to the present invention, the relationship between the temperature of the vapor of the petroleum sample measured by the temperature measuring body and the amount of distillate received by the receptor measured by the distillate amount measuring device. Can be evaluated as a measurement result to evaluate the properties of the petroleum sample.

Further, in the automatic distillation test device according to the present invention, the control device calculates a distillate rate per unit time based on the measured distillate amount, and the heater is based on the calculated distillate rate. It was configured to determine the amount of heating by.

With the above configuration, the automatic distillation test apparatus according to the present invention can perform a stable distillation test while keeping the distillation rate of the petroleum sample constant.

Further, in the automatic distillation test device according to the present invention, in the control device, the temperature of the cooling medium flowing through the condensing means is set to a predetermined temperature based on the temperature of the steam of the petroleum sample measured by the temperature measuring body. The configuration is such that the temperature adjusted by the temperature adjusting means is determined so as to be.

With the above configuration, the automatic distillation test apparatus according to the present invention prevents the precipitation of petroleum samples by keeping the temperature of the cooling medium at a predetermined temperature so that the petroleum samples do not precipitate, thereby improving the reliability of the distillation test. Can be improved.

Further, in the automatic distillation test apparatus according to the present invention, the pre-test liquid level, which is the liquid level position of the petroleum sample collected in the receptor before the control device starts the test, sets the liquid level position of the distillate. The normalized liquid level position normalized in 1 was used as the distillate amount.

With the above configuration, the automatic distillation test apparatus according to the present invention can perform a distillation test even when the sampling amount differs from the specified amount. In particular, when the sampling amount is less than the specified amount, the test time can be shortened.

Further, in the automatic distillation test apparatus according to the present invention, the primary cooling medium system has a cooling medium supply pipe that supplies the primary cooling medium cooled by the Pelche element to the outer pipe, and a primary that is discharged from the outer pipe. A primary cooling medium recovery pipe for recovering the cooling medium, a deaerator for degassing the primary cooling medium recovered by the cooling medium recovery pipe, and a primary cooling medium degassed by the deaerator are used in the Pelche element. Secondary cooling, including a primary cooling medium pump to supply, wherein the secondary cooling medium system supplies a secondary cooling medium to a receiver installation room cooler that cools the receiver installation room in which the receiver is installed. The medium receiver installation room cooler supply pipe, the secondary cooling medium Perche element supply pipe that supplies the secondary cooling medium recovered from the receiver installation room cooler to the Perche element, and the secondary cooling medium that is discharged from the Perche element. A configuration including a radiator that dissipates heat contained in the secondary cooling medium to the atmosphere and a secondary cooling medium pump that supplies the secondary cooling medium whose heat is dissipated by the radiator to the receiver installation room cooler. And said.

With the above configuration, the automatic distillation test apparatus according to the present invention can be efficiently operated by repeatedly using the primary cooling medium and the secondary cooling medium.

According to the present invention, by adjusting the temperature of the cooling medium flowing through the condensing means with the temperature adjusting means, it is possible to prevent the precipitation of petroleum samples and improve the reliability of the distillation test.

It is the schematic of the automatic distillation test apparatus which concerns on 1st Embodiment of this invention. It is a figure which shows the state which attached the auxiliary heater to the outer pipe which concerns on 1st Embodiment of this Embodiment, and covered with the heat insulating material. It is a figure which shows the state before covering the outer pipe which concerns on 1st Embodiment of this Embodiment with a heat insulating material. It is a figure which shows the state before attaching the auxiliary heater to the outer pipe which concerns on the 1st Embodiment of this embodiment. It is a flowchart which shows the test procedure by the automatic distillation test apparatus which concerns on 1st Embodiment of this invention. It is a flowchart of the test preparation routine by the automatic distillation test apparatus which concerns on 1st Embodiment of this invention. It is a flowchart of the test routine by the automatic distillation test apparatus which concerns on 1st Embodiment of this invention. It is a flowchart of the medium-term heating control routine by the automatic distillation test apparatus which concerns on 1st Embodiment of this invention. It is a flowchart of the temperature control of the outer pipe by the automatic distillation test apparatus which concerns on 1st Embodiment of this invention. It is the schematic of the automatic distillation test apparatus which concerns on 2nd Embodiment of this invention. It is a figure which shows the state which attached the auxiliary heater to the cooler which concerns on the 2nd Embodiment of this embodiment, and covered with the heat insulating material. It is a figure which shows the state before covering the cooler which concerns on the 2nd Embodiment of this embodiment with a heat insulating material. It is a figure which shows the state before attaching the auxiliary heater to the cooler which concerns on the 2nd Embodiment of this embodiment.

(First Embodiment)
Hereinafter, FIG. 1 shows a schematic view of an embodiment of the automatic distillation test apparatus according to the first embodiment of the present invention.

The automatic distillation test apparatus 100 according to the present embodiment includes a distillation flask 110 for accommodating a predetermined amount of oil sample, a heater 120 for heating the oil sample in the distillation flask 110, and an oil sample distilled in the distillation flask 110. An inner tube forming a connecting path connecting the temperature measuring body 130 for measuring the temperature of the steam, the receiver 150 for receiving the petroleum sample distilled in the distillation flask 110 as a condensate, and the distillation flask 110 and the receiver 150. A predetermined position is a 141, an outer tube 142 provided at a desired position of the inner tube 141 and condensing the vapor of the petroleum sample, an auxiliary heater 145 for adjusting the temperature of the cooling medium flowing through the outer tube 142, and a receiver 150. A receptor installation chamber 151 that holds the distillate in the position and cools the distillate in the receiver 150, a distillate amount measuring device 160 that measures the amount of distillate received by the receiver 150, and an outer tube 142. The cooling medium supply device 170 that supplies the cooling medium to the flask, the steam temperature of the petroleum sample measured by the temperature measuring body 130, and the distillate amount measured by the distillate amount measuring device 160 are read, and the heater 120 is heated. A control device 180 for adjusting the amount and the temperature of the cooling medium and displaying the measurement result is provided.

In the distillation flask 110, the wall thickness of the spherical portion is uniform, and the tube shaft of the branch pipe 110a passes through the neck pipe shaft. The material of the distillation flask 110 is, for example, borosilicate glass or quartz.

The flask support plate 111 is a porcelain plate having a predetermined thickness (for example, about 3 to 7 mm) or another heat-resistant plate, which is a square having a predetermined side length (for example, about 150 mm) and is predetermined at the center thereof. (For example, about 90 mm in diameter) is drilled to support the distillation flask 110.

The flask support base 113 has a predetermined support ring attached to a stand inside the windshield 106 so that it can be adjusted up and down, and supports the flask support plate 111 from below.

The heater 120 has a structure in which heating can be concentrated in the central portion as much as possible and has a small heating delay, and the power consumption can be adjusted to 0 to 1000 W by adjusting the heating.

The windshield 107 is a rectangular parallelepiped container that houses a distillation flask 110, a heater 120, and the like. The windshield 107 has, for example, a height of 650 mm, a width of 200 mm, a depth of 280 mm, and a thickness of about 7 mm or more, but is not necessarily limited to this size. The windshield 107 is provided with an oval notch so as to fit the branch pipe 110a of the flask 110, and a door for operating the heater 120 and the flask support 113 is provided on the front surface.

The temperature measuring body 130 is, for example, a glass mercury thermometer according to JIS regulations. Under certain conditions, the bulb of the temperature measuring body 130 will be higher than the reading, and the temperature of the bulb may approach the critical region of the glass, so care must be taken not to exceed the predetermined temperature during heating. is there.

When attaching the temperature measuring body 130 to the distillation flask 110, the temperature measuring body attachment 130a is used. The temperature measuring body attachment 130a has a structure in which the shaft of the temperature measuring body 130 can be attached to the center of the neck tube of the distillation flask 110 and steam leakage does not occur.
The temperature measuring fixture 13a is provided with a hole in the cork stopper for passing the temperature measuring body 130. Instead of the cork stopper, a silicon stopper or a fluororesin stopper may be used.

The inner tube 141 is adapted to form a connecting path that connects the distillation flask 110 and the receiver 150. The inner pipe 141 is connected to the branch pipe 110a and serves as a route for transporting the vapor of the petroleum sample generated in the distillation flask 110 to the receiver 150. A temperature measuring body 131 for measuring the temperature of the oil sample flowing in the inner pipe 141 is attached to the inner part of the outer pipe 142 (see FIG. 4) inside the inner pipe 141, and the measured temperature. Is transmitted to the CPU 181. The inner pipe 141 constitutes a connecting pipe according to the present invention.

The outer pipe 142 is provided at a desired position of the inner pipe 141 so as to condense the vapor of the petroleum sample. The circumference of the inner tube 141 is covered by a predetermined length. The outer tube 142 is made of a seamless copper tube or stainless steel tube. The outer tube 142 constitutes the condensing means according to the present invention.

FIG. 2 is a view showing a state in which the outer tube 142 to which the auxiliary heater 145 is attached is covered with the heat insulating material 146, and FIG. 2A is a plan view of the one in the state of use of the automatic distillation test apparatus 100, FIG. 2B. ) Is a sectional view taken along the line AA. A heat insulating material 146 is wound around the outer periphery of the auxiliary heater 145 so that the heat applied to the outer tube 142 by the auxiliary heater 145 does not escape. The auxiliary heater 145 constitutes the temperature adjusting means according to the present invention.

FIG. 3A is a plan view showing a state before the outer tube 142 is covered with the heat insulating material 146, and FIG. 3B is a cross-sectional view taken along the line BB. As shown in FIG. 3, the auxiliary heater 145 is attached to the outer periphery of a predetermined section of the outer pipe 142 to adjust the temperature of the outer pipe 142. The reason why the auxiliary heater 145 is attached in this way is that the temperature inside the outer pipe 142 may drop, and in such a case, the petroleum sample is prevented from precipitating and solidifying.

FIG. 4 shows the outer tube 142 in a state before the auxiliary heater 145 is attached to the outer tube 142, FIG. 4A is a plan view thereof, and FIG. 4B is a sectional view taken along the line CC.

The receptor 150 receives the condensate of the petroleum sample condensed in the outer tube 142 as a distillate. The receptor 150 has a scale, and the volume of the distillate can be visually confirmed in addition to the measurement by the distillate amount measuring device 160 described later.

The receptor installation chamber 151 has a support plate 152 that supports the receptor 150. The receptor installation chamber 151 holds the receptor 150 in a predetermined position by supporting the receptor 150 with the support plate 152 in a state where the cooling medium is inserted, and cools the distillate in the receptor 150. .. The support plate 152 is a plate-shaped member provided with a support plate hole 152a corresponding to the size of the receiver 150, and is provided on the lower side of the receiver installation chamber 151. By supporting the receptor 150 with the support plate hole 152a, the support plate 152 has a structure in which the receptor 150 does not collapse even when the receiver 150 is placed on an inclined surface of about 10 ° with respect to a horizontal plane. .. As the cooling medium, for example, cooling water is used, but ice water or hot water may be used depending on the required temperature. A temperature measuring body 132 for measuring the temperature inside the receptor installation chamber 151 is attached to the receptor installation chamber 151, and the measured temperature is transmitted to the CPU 181.

The cooling medium supply device 170 includes a primary cooling medium system 170a that cools the primary cooling medium flowing through the outer tube 142 by the Peltier element 171 and a secondary cooling medium system that dissipates heat taken from the primary cooling medium by the Peltier element 171 to the atmosphere. It is configured to include 170b.

The primary cooling medium system 170a includes a Perche element 171 for cooling the primary cooling medium, an outer pipe 142 for flowing a cooled primary cooling medium for cooling the steam of the oil sample flowing through the inner pipe 141, and the steam of the oil sample. A deaerator 172 that cools and removes air bubbles mixed in the primary cooling medium whose temperature has risen, a primary cooling medium pump 173 that supplies the degassed primary cooling medium to the Pelche element 171 and a Pelche element 171 for cooling. It is configured to include a cooling medium supply pipe 170a1 for supplying the primary cooling medium to the outer pipe 142, and a primary cooling medium recovery pipe 170a2 for recovering the primary cooling medium discharged from the outer pipe 142.

The secondary cooling medium system 170b was air-cooled by a Perche element 171 that cools the primary cooling medium and a radiator 174 that forcibly air-cools the secondary cooling medium heated by the heat taken from the primary cooling medium by the Perche element 171. A secondary cooling medium pump 175 that pressurizes the secondary cooling medium, a receiver installation room cooler 176 that cools the receiver installation chamber 151 in which the receiver 150 is installed with the pressurized secondary cooling medium, and a receiver. Secondary cooling medium that supplies the secondary cooling medium to the receiver installation room cooler 176 that cools the container installation room 151. Secondary cooling medium that is recovered from the receiver installation room cooler supply pipe 170b1 and the receiver installation room cooler 176. It is configured to include a secondary cooling medium Perche element supply pipe 170b2 that supplies a cooling medium to the Perche element 171.

The Peltier element 171 is composed of two Peltier elements 171a and a Peltier element 171b arranged in parallel. The Peltier element 171a and the Peltier element 171b are elements that are formed in a plate shape and have a function of absorbing heat on one side and radiating heat on the other side. More specifically, heat is absorbed on the side flowing through the primary cooling medium system 170a of the Peltier element 171a, and heat is dissipated on the side flowing through the secondary cooling medium system 170b. The same applies to the Peltier element 171b.

The radiator 174 has a cooling passage 174a forming a part of the secondary cooling medium system 170b and a heat radiating fan 174b. The cooling passage 174a is formed in a zigzag shape and releases heat on the outer surface. The heat radiating fan 174b air-cools the secondary cooling medium flowing through the cooling passage 174a by blowing air.

The distillate amount measuring device 160 is a primary distillate droplet detector 161 arranged immediately below the end of the inner tube 141 inserted into the receiver 150, and a liquid level position for measuring the liquid level position of the receiver 150. It is composed of a measuring instrument 162.

The liquid level position measuring instrument 162 includes a light emitting element and a light receiving element that can move up and down along two guide rails by rotating a screw screw rod, and stepping so that the liquid level is detected in the center of the light receiving element. The liquid level position is measured by rotating the screw screw rod with a motor and counting the number of pulses for driving the stepping motor.

The receptor installation room cooler 176 has a cooling passage 176a and a cooling fan 176b that form a part of the secondary cooling medium system 170b. The cooling passage 176a is formed in a zigzag shape. The cooling fan 176b cools the receptor installation chamber 151 by blowing air.

The control device 180 is a microcomputer system, and is a CPU 181 that executes processing by a program, a ROM 186 that stores a program and processing results, a RAM 187 that temporarily stores data, a thermometer 130, and an initial droplet detector 161. An input interface 183 for inputting a measurement signal output by the liquid level position measuring device 162, an output interface 184 for outputting a control signal to the heater 120 and the Pelche element 171, and a peripheral device interface 185 for connecting various peripheral devices. Including.

As peripheral devices, a keyboard 191 and a mouse 192, a display 193, a printer 194, an XY plotter 195, and the like are used. A dedicated operation panel may be used as a peripheral device.

The outline of the test method using the automatic distillation test apparatus 100 will be described below.

First, the automatic distillation test apparatus 100 is installed at a predetermined place, and a predetermined amount of petroleum sample is collected in the distillation flask 110. The predetermined amount referred to here is 100 ml in the JIS standard, but may be less than 100 ml as described later.

The ice water is started to be circulated in the cooling medium supply device 170, and the distillation flask 110 is started to be heated by the heater 120. The reading of the temperature measuring body 130 when the initial distillate is detected by the initial distillate droplet detector 161 is recorded as the initial distillate point. Distillation from the initial distillate to about 10 ml is adjusted to distill at a rate of, for example, 2 to 3 ml per minute, and thereafter, for example, distillate at a rate of 4 to 5 ml per minute. Record the thermometer reading every 5%.

When the reading of the thermometer reaches 80 to 90 ° C., the ice water of the cooling medium supply device 170 is switched to tap water and circulated, and when it reaches about 200 ° C., it is switched to hot water and distillation is continued. Immediately after the reading of the temperature measuring body 130 reaches 270 ° C., the receptor 150 is removed, the heating is stopped, and the distillate oil thereafter is received in a separate graduated cylinder. The previously removed receptor 150 is sealed and the distillate and water content at 12-18 ° C. are recorded.

Finally, the distillate amount (volume%) can be calculated by the following formula (1).
A = (D-w) / (M-w) x 100 (1)
A: Distillation amount (ml) until the reading of the temperature measuring body 130 reaches 270 ° C.
D: Total distillate in receptor 150 (ml)
w: Moisture content (ml) in receptor 150
M: Petroleum sample weighing amount (ml)
Further, a distillation curve (TBP curve) can be obtained by graphing the relationship between the distillation temperature and the distillation amount (volume%).

Next, the operation of the automatic distillation test apparatus 100 according to the present embodiment will be described.

FIG. 5 is a flowchart showing the procedure of the distillation test using the automatic distillation test apparatus 100 according to the present embodiment, in which the distillation test is carried out in the order of the test preparation step, the test step and the test result processing step.

FIG. 6 is a flowchart of the test preparation routine executed by the control device 180 in the test preparation step, and the control device 180 first determines whether or not the tester has input the sample name (step S31). When the control device 180 determines that the sample name has been input, the control device 180 proceeds to step S32. If the control device 180 determines that the sample name has not been input, the control device 180 waits until the sample name is input.

Next, the control device 180 determines whether or not the heating amount has been set (step S32). When the control device 180 determines that the heating amount has been set, the control device 180 proceeds to step S33. If the control device 180 determines that the heating amount has not been set, the control device 180 waits until the heating amount is set.

Further, the control device 180 determines whether or not the end condition is set (step S33). When the control device 180 determines that the end condition has been set, the control device 180 proceeds to step S34. If the control device 180 determines that the end condition has not been set, the control device 180 waits until the end condition is set.

Next, the control device 180 determines whether or not V-CHEK (Volume Check) has been set by the tester (step S34). When the amount of petroleum sample is JIS specified amount (100 ml), V · CHEK is not necessary, but in situations where it is difficult to adjust the amount of petroleum sample accurately, it is highly accurate to set V · CHEK. It is advantageous in conducting the test.

When the control device 180 determines that V · CHEK has been set, the control device 180 reads the pre-test liquid level position Ln of the petroleum sample measured by the liquid level position measuring device 162 (step S35), and proceeds to step S36. When the control device 180 determines that V · CHEK is not set, the control device 180 directly proceeds to step S36.

Here, V · CHEK uses a normalized liquid level position obtained by normalizing the liquid level position of the distillate measured by the liquid level position measuring device 162 with the liquid level position Ln before the start of the test as the distillate amount. It is a function. By using this function, it is possible to remove an artificial error from the amount measurement of the collected petroleum sample, and it is possible to improve the test accuracy. The control device 180 constitutes the result output means according to the present invention.

Further, even if the amount of petroleum sample is smaller than the JIS specified amount, the test can be executed with the amount as 100%, so that the test time can be shortened. For example, when the amount of petroleum sample is 50 ml, which is half of the specified amount, the test time can be reduced by half.

Finally, the control device 180 sets the flag STEP indicating the stage of the test to the initial value "1" (step S36) and ends the test preparation routine.

The tester transfers the sample in the receptor 150 to the distillation flask 110 and sets the receptor 150 and the distillation flask 110 in place.

FIG. 7 is a flowchart of a test routine executed by the control device 180 in the test process, in which the CPU 181 interrupts generated every predetermined time (for example, 100 milliseconds) after the tester presses the "start button". The signal initiates the test routine.

The CPU 181 examines the value of the flag STEP (step S401).

Since the flag STEP is initialized to "1" by the test preparation routine, the CPU 181 controls the heating amount of the heater 120 to the initial heating (step S402). The initial heating is controlled in two stages: a first initial heating for the first 5 minutes and a second initial heating after the lapse of 5 minutes.

Since the flag STEP is "1", the CPU 181 determines whether or not the initial distillate is detected by the initial distillate droplet detector 161 (step S403).

When the initial distillate is not detected, the CPU 181 ends the test routine and waits for the next execution interrupt signal.

When the CPU 181 determines that the initial distillation is detected by the initial distillation droplet detector 161 in the process of step S403, the distillation temperature measured by the temperature measuring body 130 and the liquid level position measured by the liquid level position measuring device 162 are determined. Read (step S404), set the flag STEP to "2" (step S405), end the test routine, and wait for the next execution interrupt signal.

In the next execution of the test routine, the CPU 181 determines in step S401 that the flag STEP is "2", so that the distillation temperature measured by the temperature measuring body 130 and the liquid level measured by the liquid level position measuring device 162. The position is read (step S406) and the medium-term heating control routine is executed (step S407). The medium-term heating control routine will be described later.

Next, it is determined whether or not the normalized distillate amount obtained by dividing the liquid level read this time by the reference liquid level Ln measured in the test preparation routine has reached the "residual point 5%", that is, "95%". (Step S408).

When the normalized distillation amount has not reached the "residual point 5%", the CPU 181 ends the test routine and waits for the next execution interrupt signal.

When the CPU 181 determines in step S408 that the normalized distillate amount has reached the "remaining point 5%", the flag STEP is set to "3" (step S409), the test routine is terminated, and the next step is completed. Wait for the execution interrupt signal.

In the next execution of the test routine, the CPU 181 determines that the flag STEP is "3" in step S401, so that the heating amount of the heater 120 is controlled to the final heating (step S410) and measured by the temperature measuring body 130. The distillation temperature and the liquid level position measured by the liquid level position measuring device 162 are read (step S411).

Next, the CPU 181 determines whether or not the end condition set in the test preparation routine is satisfied (step S412), ends the test routine if the end condition is not satisfied, and waits for the next execution interrupt signal. To do.

When the CPU 181 determines that the termination condition is satisfied, the heating element 120 is stopped from being energized (step S413), and the test is terminated.

FIG. 8 is a flowchart of the medium-term heating control routine executed by the CPU 181 in step S407, and calculates the distillation rate, which is the distillation amount per unit time (step S51).

Next, the CPU 181 calculates a distillate rate deviation, which is a deviation between the distillate rate (4 to 5% / min) specified in JIS and the actual distillate rate (step S52), and this distillate rate. The heating amount of the heater 120 is calculated as a function of the deviation (step S53), and the heating amount signal is output to the heater 120 via the output interface 184. That is, the required heating amount according to the distillate rate deviation is stored in the ROM 186 in advance, and the CPU 181 commands the required heating.

The JIS stipulates that the amount of petroleum sample is 100 ml and the distillation rate is 4 to 5 ml per minute. However, in the present invention, even if the amount of petroleum sample is not 100 ml, the test can be performed by the V-CHEK function. Since it is possible, the distillate rate is set to 4 to 5% / minute. It is also clear that the test time can be reduced by almost half by increasing the heating amount so that the distillation rate is 8 to 9% / min.

The control device 180 starts energizing the Peltier element 171 and the primary cooling medium pump 173 and the secondary cooling medium pump 175 when the "start button" is pressed, and when a predetermined time elapses after the test is completed, the Peltier element 171 , Control to stop energization of the primary cooling medium pump 173 and the secondary cooling medium pump 175 is also executed.

The CPU 181 executes a test result processing routine at the same time as the end of the test, and after performing a predetermined correction, draws a graph showing the relationship between the normalized distillation amount and the temperature using the printer 194 or the XY plotter 195. ..

FIG. 9 is a flowchart showing the temperature control of the cooling medium flowing through the outer tube 142 and the receptor installation chamber 151 during distillation. Each temperature shown in the flowchart is an example, and other temperatures may be set. Data such as the steam temperature threshold is stored in ROM 186.

The CPU 181 sets the temperature of the cooling medium in the outer tube 142 measured by the temperature measuring body 131 to 0 ° C. as the initial setting value at the start of distillation of the petroleum sample in the distillation flask 110, and receives the temperature measured by the temperature measuring body 132. The temperature inside the container installation chamber 151 is set to 15 ° C. (step S61). Next, the CPU 181 determines whether or not the steam temperature of the petroleum sample measured by the temperature measuring body 130 exceeds 80 ° C. If the steam temperature does not exceed 80 ° C., the distillation of the petroleum sample is continued as it is (step S62).

When the steam temperature exceeds 80 ° C., the CPU 181 changes the setting of the cooling medium temperature in the outer tube 142 from 0 ° C. to 20 ° C. and the temperature in the receptor installation chamber 151 from 15 ° C. to 20 ° C. (step). S63).

Next, the CPU 181 determines whether or not the steam temperature of the petroleum sample measured by the temperature measuring body 130 exceeds 200 ° C. If the steam temperature does not exceed 200 ° C., the distillation of the petroleum sample is continued as it is (step S64).

When the steam temperature exceeds 200 ° C., the CPU 181 changes the setting of the cooling medium temperature in the outer tube 142 from 20 ° C. to T2 ° C. and the temperature in the receptor installation chamber 151 from 20 ° C. to T3 ° C. (step). S65). T2 ° C is a maximum of 60 ° C, and T3 ° C is a maximum of 60 ° C.

In this way, a plurality of thresholds are set for the steam temperature, and when the steam temperature exceeds the threshold, the cooling medium temperature and the temperature inside the receiver installation chamber 151 are raised to each set temperature, and the outer tube cooling medium temperature and the receiver are set. By controlling the temperature of the installation room, it is possible to prevent the oil sample from being deposited in the outer pipe 142 and to measure the distillate amount with high accuracy.

As described above, the automatic distillation test apparatus 100 according to the present embodiment includes a distillation flask 110 for accommodating a predetermined amount of oil sample, a heater 120 for heating the oil sample, and an oil sample generated in the distillation flask 110. An outer tube 142 composed of a temperature measuring body 130 for measuring the temperature of the steam of the above, an inner tube 141 connected to the branch tube 110a of the distillation flask 110, and an outer tube 142 covering the circumference of the inner tube 141, and an outer tube 142. The auxiliary heater 145 that adjusts the temperature of the flask, the receiver 150 that receives the condensed liquid condensed in the inner tube 141 as the distillate, and the receiver 150 are held in place and the distillate in the receiver 150 is held. A receiver installation chamber 151 for cooling the flask, a distillate amount measuring device 160 for measuring the amount of distillate received by the receiver 150, a cooling medium supply device 170 for supplying a cooling medium to the outer tube 142, and a temperature. Steam temperature and distillate amount of petroleum sample measured by measuring body 130 Reading of distillate amount measured by measuring device 160, adjustment of heating amount of heater 120 and temperature of cooling medium, and display of measurement result It is provided with a control device 180 for performing the above.

With the above configuration, the automatic distillation test apparatus 100 according to the present embodiment can warm the temperature of the cooling medium flowing in the outer pipe 142 of the outer pipe 142 to an appropriate temperature by the auxiliary heater 145. As a result, it is possible to prevent a situation in which the amount of distillate cannot be accurately measured because the wax content in the petroleum sample is excessively cooled and precipitated. Therefore, the reliability of the distillation test can be improved by measuring all the distilled petroleum samples.

(Second Embodiment)
As described above, in the first embodiment, the petroleum sample is electrically heated by the heater 120, but in the present embodiment, the petroleum sample is heated by using gas as a heating means. The same components will be described using the same reference numerals as those of the first embodiment shown in FIGS. 1 to 9, and the differences will be particularly described.

FIG. 10 shows a schematic view of an embodiment of the automatic distillation test apparatus according to the second embodiment of the present invention.

The automatic distillation test apparatus 101 according to the present embodiment measures the temperature of the distillation flask 110 containing a predetermined amount of oil sample, the gas burner 121 for heating the oil sample, and the steam of the oil sample generated in the distillation flask 110. The temperature measuring body 130, the receiver 150 that receives the petroleum sample distilled in the distillation flask 110 as a condensate, the connecting inner tube 143 that forms a connecting path that connects the distillation flask 110 and the receiver 150, and the inside of the connection. A cooler 144, which is provided at a desired position of the tube 143 and condenses the vapor of the petroleum sample, an auxiliary heater 145 that adjusts the temperature of the cooler 144, and a receiver 150 are held in predetermined positions and a receiver. A receiving chamber 151 for cooling the distillate in the 150, a distillate amount measuring device 160 for measuring the amount of the distillate received by the receiver 150, and a cooling medium (ice water, hot water) in the cooler 144. The cooling medium supply device 170 that supplies (including), the steam temperature of the petroleum sample measured by the temperature measuring body 130, and the distillate amount measured by the distillate amount measuring device 160, the heating amount of the gas burner 121, and the distillate amount. A control device 180 for adjusting the temperature of the cooling medium and displaying the measurement result is provided.

In the distillation flask 110, the wall thickness of the spherical portion is uniform, and the tube shaft of the branch pipe 110a passes through the neck pipe shaft. The material of the distillation flask 110 is, for example, borosilicate glass or quartz.

The flask support plate 112 is a porcelain plate having a predetermined thickness (for example, about 3 to 7 mm) or another heat-resistant plate, which is a square having a predetermined side length (for example, about 150 mm) and is predetermined at the center thereof. (For example, about 90 mm in diameter) is drilled to support the distillation flask 110.

The flask support base 114 has a predetermined support ring attached to a stand inside the windshield 107 so that it can be adjusted up and down, and supports the flask support plate 112 from below.

The gas burner 121 heats the petroleum sample in the distillation flask 110 by burning the gas supplied from the gas hose. The gas burner 121 can supply about 60 KJ / min or more as a heat amount, and the heating can be freely adjusted.

The windbreak 107 is a rectangular parallelepiped container for accommodating the distillation flask 110, the gas burner 121, and the like. The windshield 107 has, for example, a height of 650 mm, a width of 200 mm, a depth of 280 mm, and a thickness of about 7 mm or more, but is not necessarily limited to this size. The windshield 107 is provided with an oval notch so as to fit the branch pipe 110a of the flask 110, and a door for operating the gas burner 121 and the flask support plate 112 is provided on the front surface.

The temperature measuring body 130 is, for example, a glass mercury thermometer according to JIS regulations. Under certain conditions, the bulb of the temperature measuring body 130 will be higher than the reading, and the temperature of the bulb may approach the critical region of the glass, so care must be taken not to exceed the predetermined temperature during heating. is there.

The connecting inner pipe 143 is connected to the branch pipe 110a and serves as a route for transporting the vapor of the petroleum sample generated in the distillation flask 110 to the receiver 150. The cooler 144 covers the periphery of the connecting inner pipe 143 by a predetermined length, and circulates the cooling medium sent from the cooling medium supply device 170. The cooler 144 is made of glass. A temperature measuring body 131 for measuring the temperature of the cooling medium flowing in the cooler 144 is attached to the cooler 144. The cooling stand 147 is adapted to support the cooler 144 at a predetermined angle. The connecting inner pipe 143 constitutes the connecting pipe according to the present invention. The cooler 144 constitutes the condensing means according to the present invention.

FIG. 11 is a view showing a state in which the cooler 144 to which the auxiliary heater 145 is attached is covered with the heat insulating material 146, and is a plan view of FIG. 11 (a) in the state of use of the automatic distillation test apparatus 101, FIG. 11 (b). Is a sectional view taken along the line AA. A heat insulating material 146 is wound around the outer periphery of the auxiliary heater 145 so that the heat applied to the cooler 144 by the auxiliary heater 145 does not escape. The auxiliary heater 145 constitutes the temperature adjusting means according to the present invention.

FIG. 12A is a plan view showing a state before the cooler 144 is covered with the heat insulating material 146, and FIG. 12B is a cross-sectional view taken along the line BB. As shown in FIG. 12, the auxiliary heater 145 is attached to the outer periphery of a predetermined section of the cooler 144 to adjust the temperature of the cooler 144. The reason why the auxiliary heater 145 is attached in this way is that the temperature inside the cooler 144 may drop, and in such a case, the petroleum sample is prevented from precipitating and solidifying.

FIG. 13 shows the cooler 144 in a state before the auxiliary heater 145 is attached to the cooler 144, FIG. 13 (a) is a plan view thereof, and FIG. 13 (b) is a sectional view taken along the line CC.

The receptor 150 receives the condensate of the petroleum sample condensed in the cooler 144 as a distillate. The receptor 150 has a scale, and the volume of the distillate can be visually confirmed in addition to the measurement by the distillate amount measuring device 160 described later.

The receptor installation chamber 151 has a support plate 152 that supports the receptor 150. The receptor installation chamber 151 holds the receptor 150 in a predetermined position by supporting the receptor 150 with the support plate 152 in a state where the cooling medium is inserted, and cools the distillate in the receptor 150. .. The support plate 152 is a plate-shaped member provided with a support plate hole 152a corresponding to the size of the receiver 150, and is provided on the lower side of the receiver installation chamber 151. By supporting the receptor 150 with the support plate hole 152a, the support plate 152 has a structure in which the receptor 150 does not collapse even when the receiver 150 is placed on an inclined surface of about 10 ° with respect to a horizontal plane. .. As the cooling medium, for example, cooling water is used, but ice water or hot water may be used depending on the required temperature. A temperature measuring body 132 for measuring the temperature inside the receptor installation chamber 151 is attached to the receptor installation chamber 151, and the measured temperature is transmitted to the CPU 181.

The cooling medium supply device 170 includes a primary cooling medium system 170a that cools the primary cooling medium flowing through the cooler 144 by the Peltier element 171 and a secondary cooling medium system that dissipates heat taken from the primary cooling medium by the Peltier element 171 to the atmosphere. It is configured to include 170b.

The primary cooling medium system 170a includes a Perche element 171 for cooling the primary cooling medium, a cooler 144 for flowing a cooled primary cooling medium for cooling the steam of the oil sample flowing through the connecting inner pipe 143, and the petroleum sample. The deaerator 172 that cools the steam and removes the bubbles mixed in the primary cooling medium whose temperature has risen, the primary cooling medium pump 173 that supplies the degassed primary cooling medium to the Pelche element 171, and the Pelche element 171. It is configured to include a cooling medium supply pipe 170a1 for supplying the cooled primary cooling medium to the cooler 144, and a primary cooling medium recovery pipe 170a2 for recovering the primary cooling medium discharged from the cooler 144.

The secondary cooling medium system 170b was air-cooled by a Perche element 171 that cools the primary cooling medium and a radiator 174 that forcibly air-cools the secondary cooling medium heated by the heat taken from the primary cooling medium by the Perche element 171. A secondary cooling medium pump 175 that pressurizes the secondary cooling medium, a receiver installation room cooler 176 that cools the receiver installation room in which the receiver 150 is installed with the pressurized secondary cooling medium, and a receiver. Secondary cooling medium that supplies the secondary cooling medium to the receiver installation room cooler 176 that cools the installation room 151. Secondary cooling that is recovered from the receiver installation room cooler supply pipe 170b1 and the receiver installation room cooler 176. It is configured to include a secondary cooling medium Perche element supply pipe 170b2 for supplying the medium to the Perche element 171.

The Peltier element 171 is composed of two Peltier elements 171a and a Peltier element 171b arranged in parallel. The Peltier element 171a and the Peltier element 171b are elements that are formed in a plate shape and have a function of absorbing heat on one side and radiating heat on the other side. More specifically, heat is absorbed on the side flowing through the primary cooling medium system 170a of the Peltier element 171a, and heat is dissipated on the side flowing through the secondary cooling medium system 170b. The same applies to the Peltier element 171b.

The radiator 174 has a cooling passage 174a forming a part of the secondary cooling medium system 170b and a heat radiating fan 174b. The cooling passage 174a is formed in a zigzag shape and releases heat on the outer surface. The heat radiating fan 174b air-cools the secondary cooling medium flowing through the cooling passage 174a by blowing air.

The distillate amount measuring device 160 determines the liquid level positions of the first distillate droplet detector 161 and the receiver 150, which are arranged immediately below the end of the connecting inner tube 143 of the cooler 144 inserted into the receiver 150. It is composed of a liquid level position measuring device 162 for measuring.

The liquid level position measuring instrument 162 includes a light emitting element and a light receiving element that can move up and down along two guide rails by rotating a screw screw rod, and stepping so that the liquid level is detected in the center of the light receiving element. The liquid level position is measured by rotating the screw screw rod with a motor and counting the number of pulses for driving the stepping motor.

The receptor installation room cooler 176 has a cooling passage 176a and a cooling fan 176b that form a part of the secondary cooling medium system 170b. The cooling passage 176a is formed in a zigzag shape. The cooling fan 176b cools the receptor installation chamber 151 by blowing air.

The control device 180 is a microcomputer system, and is a CPU 181 that executes processing by a program, a ROM 186 that stores a program and processing results, a RAM 187 that temporarily stores data, a thermometer 130, and an initial droplet detector 161. An input interface 183 for inputting a measurement signal output by the liquid level position measuring device 162, an output interface 184 for outputting a control signal to the heater 120 and the Pelche element 171, and a peripheral device interface 185 for connecting various peripheral devices. Including.

As peripheral devices, a keyboard 191 and a mouse 192, a display 193, a printer 194, an XY plotter 195, and the like are used. A dedicated operation panel may be used as a peripheral device.

The outline of the test method according to the present embodiment and the operation of the automatic distillation test apparatus 101 are the same as those of the first embodiment based on FIGS. 5 to 9, and the description thereof will be omitted.

As described above, the automatic distillation test apparatus 101 according to the present embodiment includes a distillation flask 110 for accommodating a predetermined amount of oil sample, a gas burner 121 for heating the oil sample, and an oil sample generated in the distillation flask 110. A condensing means composed of a temperature measuring body 130 for measuring the temperature of steam, a connecting inner pipe 143 connected to a branch pipe 110a of the distillation flask 110, and a cooler 144 surrounding the connecting inner pipe 143, and a cooler 144. The auxiliary heater 145 that adjusts the temperature of the above, the receiver 150 that receives the condensate condensed in the connecting inner tube 143 as a distillate, and the receiver 150 are held in place and distilled in the receiver 150. A cooling medium (including ice water and hot water) is supplied to the receiver installation room 151 for cooling the liquid, the distillate amount measuring device 160 for measuring the amount of distillate received by the receiver 150, and the cooler 144. Reading of the steam temperature of the petroleum sample measured by the cooling medium supply device 170 and the temperature measuring body 130 and the distillate amount measured by the distillate amount measuring device 160, the heating amount of the gas burner 121 and the temperature of the cooling medium. It includes a control device 180 for adjusting and displaying measurement results.

With the above configuration, the automatic distillation test apparatus 101 according to the present embodiment can warm the temperature of the cooling medium flowing in the cooler 144 to an appropriate temperature by the auxiliary heater 145. As a result, it is possible to prevent a situation in which the amount of distillate cannot be accurately measured because the wax content in the petroleum sample is excessively cooled and precipitated. Therefore, the reliability of the distillation test can be improved by measuring all the distilled petroleum samples.

As described above, the automatic distillation test apparatus according to the present invention can prevent the precipitation of petroleum samples and improve the reliability of the distillation test by warming the cooling medium flowing through the condensing means with an auxiliary heater. It has an effect and is effective as an automatic distillation test device.

100, 101 Automatic distillation test equipment 106, 107 Windbreak 110 Distillation flask 110a Branch pipe 111, 112 Flask support plate 113, 114 Flask support 120 Heater 121 Gas burner 130, 131, 132 Temperature measuring body 141 Inner pipe (connecting pipe) )
142 Outer tube (condensing means)
143 Connecting inner pipe (connecting pipe)
144 cooler (condensing means)
145 Auxiliary heater (temperature control means)
146 Insulation 147 Cooler stand 150 Receptor 151 Receptor installation room 160 Distillate volume measuring device 161 Initial distillate droplet detector 162 Liquid level position measuring device 170 Cooling medium supply device 170a Primary cooling medium system 170b Secondary cooling medium System 171 Peltier element 172 Deaerator 173 Primary cooling medium pump 174 Dissipator 175 Secondary cooling medium pump 176 Receptor installation room cooler 180 Control device 181 CPU (result output means)
182 Memory 183 Input Interface 184 Output Interface 185 Peripheral Interface 191 Keyboard 192 Mouse 193 Display 194 Printer 195 XY Plotter

The automatic distillation test apparatus according to the present invention uses a distillation flask containing a predetermined amount of oil sample, a heater for heating the oil sample in the distillation flask, and the oil sample distilled in the distillation flask as a condensate. A receiving receiver, a connecting tube forming a connecting path connecting the distillation flask and the receiving, a condensing means provided at a desired position of the connecting tube and condensing the vapor of the petroleum sample, and the above. The configuration includes a cooling means for cooling the primary cooling medium flowing through the condensing means and a heating means for adjusting the temperature of the primary cooling medium flowing through the condensing means by heating the condensing means.

Further, in the automatic distillation test apparatus according to the present invention, the condensing means has a cooling pipe for forming a cooling passage through which the primary cooling medium for cooling the vapor of the petroleum sample generated in the distillation flask flows. It has a configuration providing the heating means on the outside of the cooling tube.

The automatic distillation test apparatus according to the present invention, supplying the secondary cooling medium for cooling the primary coolant system for supplying the primary cooling medium to the condensing means, a distillate bottom product received in said receptacle The secondary cooling medium system is further provided, and the cooling means is a Pelche element that cools the primary cooling medium and heats the secondary cooling medium with the heat taken from the primary cooling medium.

Further, in the automatic distillation test device according to the present invention, in the control device, the temperature of the primary cooling medium flowing through the condensing means is a predetermined temperature based on the temperature of the steam of the petroleum sample measured by the temperature measuring body. The temperature adjusted by the heating means is determined so as to be.

Claims (8)

A distillation flask containing a predetermined amount of petroleum sample,
A heater that heats the petroleum sample in the distillation flask,
A receptor that receives the petroleum sample distilled in the distillation flask as a condensate,
A connecting tube forming a connecting path connecting the distillation flask and the receptor,
A condensing means provided at a desired position in the connecting pipe to condense the vapor of the petroleum sample.
An automatic distillation test apparatus comprising: a temperature adjusting means for adjusting the temperature of a cooling medium flowing through the condensing means. The condensing means has a cooling pipe forming a cooling passage through which the cooling medium for cooling the vapor of the petroleum sample generated in the distillation flask flows, and the temperature adjusting means is provided outside the cooling pipe. The automatic distillation test apparatus according to claim 1. A primary cooling medium system that supplies a primary cooling medium to the condensing means,
A secondary cooling medium system that cools the distillate received by the receptor,
The invention according to any one of claims 1 and 2, further comprising a Peltier element that cools the primary cooling medium and heats the secondary cooling medium with the heat taken from the primary cooling medium. Automatic distillation test equipment. A temperature measuring body for measuring the temperature of the steam of the petroleum sample generated in the distillation flask, and
A distillate amount measuring device for measuring the amount of distillate received by the receptor is further provided.
Claim 1 is provided with a control device for displaying the vapor temperature of the petroleum sample measured by the temperature measuring body and the measurement result of the distillate amount measured by the distillate amount measuring device. The automatic distillation test apparatus according to any one of claims 3. The control device is characterized in that a distillate rate per unit time is calculated based on the measured distillate amount, and the heating amount by the heater is determined based on the calculated distillate rate. The automatic distillation test apparatus according to claim 4. The control device determines the temperature adjusted by the temperature adjusting means so that the temperature of the cooling medium flowing through the condensing means becomes a predetermined temperature based on the temperature of the steam of the petroleum sample measured by the temperature measuring body. The automatic distillation test apparatus according to any one of claims 4 and 5, characterized in that. The control device sets the normalized liquid level position obtained by normalizing the liquid level position of the distillate with the pre-test liquid level, which is the liquid level position of the petroleum sample collected in the receptor before the start of the test. The automatic distillation test apparatus according to any one of claims 4 to 6, which is used as a liquid discharge amount. The primary cooling medium system includes a cooling medium supply pipe that supplies the primary cooling medium cooled by the Pelche element to the cooling pipe, and a primary cooling medium recovery pipe that recovers the primary cooling medium discharged from the outer pipe. A deaerator for degassing the primary cooling medium recovered by the cooling medium recovery pipe and a primary cooling medium pump for supplying the primary cooling medium degassed by the deaerator to the Pelche element are included.
The secondary cooling medium system supplies the secondary cooling medium to the receiver installation room cooler that cools the receiver installation room in which the receiver is installed. The secondary cooling medium receiver installation room cooler supply pipe. Secondary cooling medium that supplies the secondary cooling medium recovered from the receiver installation room cooler to the Perche element The heat possessed by the Perche element supply pipe and the secondary cooling medium discharged from the Perche element is transferred to the atmosphere. Claims 3 to 7 include a radiator that dissipates heat and a secondary cooling medium pump that supplies a secondary cooling medium whose heat is radiated by the radiator to the receiver installation room cooler. The automatic distillation test apparatus according to any one of the above items.

Images