JP2009046656A - Apparatus for producing gas hydrate and apparatus for measuring gas hydrate concentration - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for producing a gas hydrate by subjecting a gaseous raw material and raw water to gas-liquid contact, in which a gas hydrate pellet having constant quality is produced stably. <P>SOLUTION: The gas hydrate pellet is produced by subjecting the gas hydrate produced from the gaseous raw material and raw water to compression molding and the gas hydrate concentration of the produced gas hydrate pellet is measured by an in-line measurement type densitometer so that the production conditions of the gas hydrate are adjusted on the basis of the measured value. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a gas hydrate manufacturing apparatus and a gas hydrate concentration measuring apparatus.

  In recent years, natural gas mainly composed of methane has attracted attention as a clean energy source. In order to efficiently transport or store such natural gas, it is known to produce gas hydrate by reacting the natural gas and raw water.

As a method for producing gas hydrate, a gas-liquid stirring method (for example, refer to Patent Document 1) that stirs while blowing a raw material gas into raw material water, and a water spray method (for example, a patent for spraying raw material water into the raw material gas). Reference 2). The gas hydrate produced by the gas-liquid stirring method or water spray method is in the form of powder and is produced as a slurry mixed with unreacted water, and this slurry is unreacted water by a dehydrator arranged on the downstream side. And gas hydrate are separated to produce a gas hydrate having a relatively low water content. Furthermore, it is known that the gas hydrate is supplied to a molding machine to produce pellets, and the pellets are stored or transported (see, for example, Patent Document 3).
JP 2000-302701 A JP 2000-264852 A JP 2002-220353 A

  By the way, in the gas hydrate manufacturing apparatus as described above, no consideration has been given to a method for quickly detecting variations in the quality of gas hydrate pellets as products.

  The present invention employs the following means in order to solve the above-described problems.

  (1) A gas hydrate generator for producing a gas hydrate by reacting a raw material gas and raw material water, and a pellet molding machine for forming a pellet by compressing and molding the gas hydrate produced by the gas hydrate generator. A gas hydrate production apparatus comprising: a gas hydrate concentration meter that measures a gas hydrate concentration in a pellet at a pellet discharge port of the pellet molding machine.

  (2) A cylindrical reflected light collector was fitted into the pellet discharge outlet, and the tip of the gas hydrate densitometer was inserted into the through hole provided in the side surface of the reflected light collector. (1) The gas hydrate manufacturing apparatus according to (1).

  (3) The gas hydrate manufacturing apparatus according to (1), wherein the reflectivity of the inner wall surface of the pellet discharge outlet is increased.

  (4) A gas hydrate generator for generating a gas hydrate by reacting a raw material gas and raw water, and a pellet molding machine for forming a pellet by compressing and molding the gas hydrate generated by the gas hydrate generator A gas hydrate concentration meter for measuring the gas hydrate concentration in the pellet provided in the pipe of the discharge line of the pellet discharged from the pellet molding machine. A gas hydrate manufacturing apparatus provided.

  (5) A pellet fractionation device operated by a comparison means for comparing the gas hydrate concentration in the pellet measured by the gas hydrate concentration meter with the set concentration is provided on the downstream side of the gas hydrate concentration meter. The gas hydrate manufacturing apparatus according to (4).

  (6) The cylindrical reflected light collector is fitted in the inclined tube, and the tip of the gas hydrate densitometer is inserted into the through hole provided in the side surface of the reflected light collector. The gas hydrate manufacturing apparatus according to (4).

  (7) The gas hydrate manufacturing apparatus according to (4), wherein the reflectivity of the inner wall surface of the inclined tube is increased.

  (8) A gas hydrate generator for generating a gas hydrate by reacting a raw material gas and raw water, and a pellet molding machine for forming a pellet by compressing and molding the gas hydrate generated by the gas hydrate generator And a gas hydrate production apparatus for storing a pellet formed by the pellet molding machine, wherein the storage tank is provided with a gas hydrate concentration meter for measuring a gas hydrate concentration in the pellet. Gas hydrate manufacturing equipment.

  (9) A gas hydrate concentration meter that measures the gas hydrate concentration is arranged on a cylinder rod that expands and contracts in a substantially horizontal direction, and the gas hydrate concentration meter in the pellets in the storage tank is measured by the gas hydrate concentration meter. The gas hydrate manufacturing apparatus according to (8), characterized in that it is characterized in that

  (10) A cylindrical reflected light collector is provided in the storage tank, and a distal end portion of a gas hydrate concentration meter is inserted into a through hole provided in a side surface of the reflected light collector. (8) The gas hydrate production apparatus according to (8).

  (11) Controlling a gas hydrate supply device that supplies gas hydrate to a pellet molding machine based on a gas hydrate concentration signal in a pellet measured by a gas hydrate concentration meter (1), The gas hydrate production apparatus according to (4) or (8).

  (12) The gas hydrate production apparatus according to any one of (1) to (11), wherein the gas hydrate concentration meter is a near-infrared spectrometer.

  (13) A gas hydrate concentration measuring apparatus including a gas hydrate concentration meter and a display, wherein the light radiated from the gas hydrate concentration meter is reflected on the gas hydrate concentration meter, and the gas hydrate concentration concentration is measured. A gas hydrate concentration measuring apparatus comprising a pellet container for condensing light at a tip measuring portion of a meter.

  According to the gas hydrate manufacturing apparatus according to the present invention, a gas hydrate concentration meter is attached to the outlet of the molding machine, and the gas hydrate concentration concentration of the pellets discharged from the molding machine is measured by this concentration meter. The gas hydrate concentration in the resulting pellet can be measured continuously and rapidly. As a result, it is possible to adjust a factor for changing the gas hydrate concentration in the pellet at an early stage, and to manufacture a pellet-shaped gas hydrate having a substantially uniform gas hydrate concentration stably and efficiently.

  At that time, the measurement light emitted from the gas hydrate densitometer can be obtained by fitting a cylindrical reflected light collector into the pellet discharge outlet or increasing the reflectivity of the inner wall surface of the pellet discharge outlet. The recovery rate is improved and the measurement accuracy is improved.

  In addition, an inclined pipe is provided in the pipeline of the pellet discharge line discharged from the pellet molding machine, and a gas hydrate concentration meter for measuring the gas hydrate concentration in the pellet is provided in the inclined pipe. Since the concentration of the pellet-like gas hydrate flowing in the pipe line is measured, the concentration of the gas hydrate in the pellet can be measured continuously and accurately. As a result, it is possible to adjust a factor for changing the gas hydrate concentration in the pellet at an early stage, and to manufacture a pellet-shaped gas hydrate having a substantially uniform gas hydrate concentration stably and efficiently.

  At that time, the recovery rate of the measurement light emitted from the gas hydrate densitometer can be improved by fitting a cylindrical reflected light collector into the inclined tube or increasing the reflectivity of the inner wall surface of the inclined tube. The measurement accuracy is improved.

  In addition, since the gas hydrate concentration in the pellets produced by the molding machine was measured and separated by a sorting device, poor quality pellets can be separated and removed, and the quality of the pellets stored in the storage tank can be reduced. It can be further stabilized.

  In addition, since a gas hydrate concentration meter was attached to the storage tank, and the gas hydrate concentration meter of the pellet in the storage tank was measured with this gas hydrate concentration meter, for example, a pellet-like gas such as pressure or temperature change in the storage tank The quality of pellet gas hydrate can be maintained by adjusting the factor of concentration change of hydrate.

  In addition, since the gas hydrate concentration meter that measures the gas hydrate concentration is placed on the cylinder rod that expands and contracts in a substantially horizontal direction, the positional relationship between the gas hydrate concentration meter and the pellets by moving the gas hydrate concentration meter Can be adjusted to an appropriate measurement condition, and an accurate gas hydrate concentration in the pellet can be measured. Moreover, since the position of the gas hydrate concentration meter in the storage tank can be moved, the concentration distribution of the gas hydrate in the stored pellets can be measured.

  In addition, since the cylindrical reflected light collector is provided in the storage tank, and the tip of the gas hydrate concentration meter is inserted into the through hole provided in the side surface of the reflected light collector, the gas hydrate concentration The recovery rate of the measurement light emitted from the meter is improved, and the measurement accuracy is improved.

  In addition, since the gas hydrate supply device for supplying gas hydrate to the molding means is controlled based on the signal of the gas hydrate concentration meter, the amount of gas hydrate supplied to the pellet molding machine is automatically controlled. As a result, a pellet-shaped gas hydrate having higher quality can be continuously produced.

  In addition, since the gas hydrate concentration meter is a near-infrared spectrometer, the measurement of the gas hydrate concentration is quick and accurate. Therefore, a uniform and high-quality pellet-like gas hydrate can be obtained, and in-line measurement can be performed, so that the measurement of the gas hydrate concentration is extremely efficient.

  On the other hand, the gas hydrate concentration measuring apparatus of the present invention includes a pellet storage container for reflecting a light beam irradiated from the gas hydrate concentration meter and condensing it on the tip measurement unit of the gas hydrate concentration meter. Since it provided, the recovery rate of the light irradiated from the gas hydrate densitometer is improved, and the measurement accuracy of the sample pellet is improved.

  Next, embodiments of the present invention will be described with reference to the drawings. In addition, a present Example shows the example, and does not limit this invention.

Example 1
FIG. 1 is a schematic configuration diagram of a gas hydrate production apparatus according to the present invention. The gas hydrate production apparatus of FIG. 1 uses a gas hydrate generator 1 by a gas-liquid stirring method. The generator 1 includes a pressure vessel 5, a heat exchanger 7 for cooling the raw water in the pressure vessel 5, a stirring blade 6a and a gas ejection pipe 9 (sparger) disposed inside the pressure vessel 5, It comprises a drive machine M1 such as an electric motor for rotating a shaft 6b provided with a stirring blade 6a.

  Further, the generator 1 includes a gas supply line L5 for introducing a source gas G1 such as methane, a water supply line L6 for introducing a source water W1, and a gas circulation line L1 for a source gas G1 having a gas circulation blower B1. The brine circulation line L10 having the heat exchanger 7, the slurry line L2 having one end connected to the dehydration tower 2 described later, and the return line L3 of the unreacted water W2 are connected. The slurry line L2 is provided with a slurry pump P1, and the return line L3 is provided with a pump P2.

  The dehydration tower 2 is constituted by a cylindrical main body 11, a drain hole 11 a is provided in the upper portion, the drain hole 11 a is covered, and a drain chamber 12 is formed around the cylindrical main body 11. The dehydration tower 2 is connected to the slurry line L2, the return line L3 of the unreacted water W2, and the take-out line L4 of the gas hydrate h2, and an exhaust pipe L7 is attached to the drain chamber 12. It has been.

  The gas G2 in the drainage chamber 12 is exhausted from the exhaust line L7, and the pressure A2 in the drainage chamber 12 is lower than the pressure A1 in the dehydration tower 2. Therefore, the unreacted water W2 is sucked from the drainage chamber 12 side through the drainage hole 11a and drained efficiently.

  The gas hydrate h2 dehydrated in the dehydration tower 2 is transferred to a compression molding machine 3 comprising a pair of molding rolls 23a and 23b provided with a screw type transfer device 21 in a hopper 22 via a screw conveyor 15 at the top of the dehydration tower. It comes to be supplied. The molding machine 3 is disposed in the pressure vessel 24 and is maintained at substantially the same pressure as the generator 1 or the dehydration tower 2. The screw type transfer device 21 is formed by a screw shaft 21b and a screw 21a provided on the screw shaft 21b.

  In this molding machine 3, gas hydrate h2 is filled in molding recesses (not shown) formed on the surfaces of the molding rolls 23a and 23b, and compressed with the rotation of the rolls 23a and 23b to be molded into pellets. It is like that. The gas hydrate pellets h3 thus molded are transferred from the discharge line L9 to the storage tank (not shown) through the discharge outlet 26.

  An in-line measurement type densitometer K1 for measuring the gas hydrate concentration in the pellet is provided at the outlet 26 of the molding machine 3. The signal V1 of the densitometer K1 is input to the arithmetic unit 40. As shown in FIG. 3, the arithmetic device 40 includes an arithmetic unit 41, a comparator 42, and a storage device 43. 44 is an indicator, 45 is an output device, and 46 is a control signal transmitter.

  The densitometer K1 is a near-infrared spectroscopic analyzer, for example, a gas hydrate manufacturing apparatus that uses an explosion-proof explosion-proof structure with an explosion-proof grade of Exd IIB T4 or higher and uses an explosive gas such as methane gas as a raw material gas. Can be used safely. Moreover, the amount of infrared rays absorbed according to the concentration of unreacted water contained in the gas hydrate by irradiating the gas hydrate with at least two rays having different wavelengths and condensing the reflected light from the gas hydrate on the detector. The water content is measured from Therefore, it has the characteristics that responsiveness is good and measurement time is very short.

  The near-infrared irradiation part (measurement part: probe) 28 of the densitometer K1 is a rod-shaped body as shown in FIG. 4, and has a measurement window 28a at its tip. Reference numeral 28b denotes a tapered portion. The densitometer K1 is provided with a cooling means so that the gas hydrate is not decomposed by the heat generated by the probe 28. Various cooling means can be used as the cooling means.

  If desired, a cylindrical reflected light collector 29 is fitted into the outlet 26 of the pellet molding machine 3, and a densitometer is placed in a through hole (not shown) provided in the side surface of the reflected light collector 29. When the tip of K1 is inserted, the absorbance (Abs) of the densitometer K1 is improved (see FIG. 5). In FIG. 5, a two-dot chain line a indicates a case without a reflected light collector, and a solid line b indicates a case with a reflected light collector. The same effect can be obtained by increasing the reflectivity of the inner wall surface of the discharge outlet 26.

  In order to increase the reflectivity of the inner surface of the reflected light collector 29 and the inner wall surface of the outlet 26, for example, aluminum or an aluminum alloy is deposited on the inner surface of the reflected light collector 29 or the inner wall surface of the outlet 26. It is desirable to apply chrome plating or the like.

  In the gas hydrate manufacturing apparatus configured as described above, a predetermined temperature and pressure, for example, a predetermined pressure A1 and a temperature T1 selected from a range of 3 to 5 MPa and a temperature of 0 to 10 ° C. are maintained. The raw material gas G1 is introduced from the gas supply line L5 and the raw material water W1 is introduced from the water supply line L6 into the pressure vessel 5 of the generator 1 being installed. The raw material gas G1 is supplied to the sparger 9 via the gas circulation line L1 by the gas circulation blower B1, and is stirred from the raw water W1 by the stirring blade 6a rotated by the driving machine M1 and gas hydrate. A slurry S1 (mixed hydrate) composed of h1 and unreacted water W2 is generated.

  The reaction heat generated in the gas hydrate generation process is removed by the heat exchanger 7 provided in the brine circulation line L10, and the inside of the pressure resistant vessel 5 is maintained at the selected predetermined temperature T1.

  The slurry S1 generated in the generator 1 is supplied to the dehydration tower 2 via the slurry line L2 by the slurry pump P1, and unreacted water W2 is drained through the drain holes 11a in the process of rising in the dehydration tower 2. Thus, the gas hydrate h2 having an increased gas hydrate content is obtained.

  This gas hydrate h2 is supplied into the hopper 22 of the molding machine 3 through the transfer line L4, and is formed into molding recesses (not shown) of the molding rolls 23a and 23b by the screw type transfer device 21 as shown in FIG. Filled. As the molding rolls 23a and 23b rotate, the gas hydrate h2 filled in the molding recess receives a compression action, and is pelletized and discharged from below the molding rolls 23a and 23b.

  The discharged pellets h3 are discharged to a discharge line L9 from a discharge outlet 26 provided below the pressure vessel 24 that houses the molding machine 3. At this time, the gas hydrate content of the pellet h3 is measured in real time by the densitometer K1 provided at the outlet 26.

  As shown in FIG. 3, the gas hydrate content of the pellet h3 measured by the densitometer K1 is output as a signal V1 from the densitometer K1 and is input to a calculator 41 that constitutes the calculator 40. The density d1 measured from the signal V1 is obtained by the calculator 41 and input to the comparator 42 as the signal V2. Further, a predetermined density d2 stored in advance in the storage device 43 is also input to the comparator 42 as a signal V3.

  The result of comparison by the comparator 42 is output to the display 44 and the output unit 45. Therefore, the operator can know the concentration of the gas hydrate pellet h3 accurately and continuously by observing the output part of the display 44 or the output unit 45. If an abnormality occurs in the measured concentration d1, for example, the stirring speed is adjusted by operating the driving machine M1 of the generator 1, or the dehydration tower 2 is adjusted by operating the slurry pump P1. The amount of dehydration can be adjusted. That is, when the measured concentration d1 is higher than the set concentration d2, the supply amount of the gas hydrate h2 supplied to the molding machine 3 is decreased, and in the opposite case, the supply amount is increased.

  The gas hydrate pellet h3 discharged from the molding machine 3 is cooled to, for example, about minus 20 ° C. by the cooling device 50, freezes the contained water, and is decompressed to the atmospheric pressure by the depressurizing device 51 for transportation and storage. A suitable gas hydrate pellet h3 is obtained and stored in the storage tank 52.

  This example makes it possible to measure the concentration of the product gas hydrate pellets in real time. Based on this measurement value, the gas hydrate production conditions (stirring speed, temperature, pressure) in the generator in real time. Etc.) will be able to adjust. Therefore, it is possible to stably produce the pellets while suppressing the uneven quality of the gas hydrate pellets.

  In the present embodiment, the operator manually changes the operating conditions of the apparatus or visually observes the gas hydrate concentration, but it goes without saying that this can be automated by the control means.

(Example 2)
In this embodiment, as shown in FIG. 6 (a), an inclined pipe L9a in which a part of the pipe line of the payout line L9 connected to the payout outlet 26 of the molding machine 3 is inclined is further arranged. The tube L9a is provided with a densitometer K1. The same parts as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The gas hydrate pellets h3 compression-molded by the molding machine 3 are transferred from the discharge outlet 26 through the piping of the discharge line L9. The pellet h3 to be transferred is transferred while sliding on the inner wall surface of the inclined pipe L9a by the inclined pipe L9a formed in the payout line L9.

According to the present embodiment, since the inclined line L9a is provided in the payout line L9, the flow velocity of the pellet h3 transferred through the inclined line L9a is relatively slow. As a result, it is possible to measure the gas hydrate concentration of the pellets in the h3 densitometer K1 (content) more accurately. Furthermore, damage to the gas hydrate pellet h3 can be prevented.

  Further, the density d1 measured by the densitometer K1 is compared with the set concentration d2, and the operating conditions are adjusted as in the first embodiment, thereby stably producing gas hydrate pellets with no quality irregularities. Can do.

  At this time, as shown in FIG. 6B, a cylindrical reflected light collector 29 is fitted into the inclined tube L9a, and a through-hole (not shown) provided on the side surface of the reflected light collector 29 is provided. ), The absorbance (Abs) of the densitometer K1 is improved (see FIG. 5). The same effect can be obtained by increasing the reflectivity of the inner wall surface of the inclined tube L9a.

  In order to increase the reflectivity of the inner surface of the reflected light collector 29 and the inner wall surface of the inclined tube L9a, for example, aluminum or an aluminum alloy is deposited on the inner surface of the reflected light collector 29 or the inner wall surface of the inclined tube L9a. It is desirable to apply chrome plating or the like.

(Example 3)
In the present embodiment, as shown in FIG. 7A, an inclined pipe L9a in which a part of the pipe line of the payout line L9 connected to the payout port 26 of the molding machine 3 is inclined is disposed, and this inclined pipe L9a is arranged. Is provided with a concentration meter K1, and further, a pellet sorting device 33 is arranged downstream of the concentration meter K1. The same parts as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  Further, an arithmetic unit 40 is provided for comparing the signal of the gas hydrate concentration d1 in the pellet measured by the concentration meter K1 with the set concentration d2 and outputting a control signal to the sorting device 33.

  According to this embodiment, it is possible to separate the pellet h4 whose gas hydrate content measured by the densitometer K1 is out of the predetermined concentration range. Therefore, uneven quality of the gas hydrate pellets h3 stored in the storage tank (not shown) can be further suppressed.

  At this time, as shown in FIG. 7B, a cylindrical reflected light collector 29 is fitted into the inclined tube L9a, and a through-hole (not shown) provided on the side surface of the reflected light collector 29 is provided. ), The absorbance (Abs) of the densitometer K1 is improved (see FIG. 5). The same effect can be obtained by increasing the reflectivity of the inner wall surface of the inclined tube L9a.

  In order to increase the reflectivity of the inner surface of the reflected light collector 29 and the inner wall surface of the inclined tube L9a, for example, aluminum or an aluminum alloy is deposited on the inner surface of the reflected light collector 29 or the inner wall surface of the outlet 26. It is desirable to apply chrome plating or the like.

Example 4
In the present embodiment, as shown in FIG. 8, a cylinder device 32 is provided for the pellet storage tank 31, and a probe 28 of a densitometer K4 is provided at the tip of the piston rod 32a.

  With such a configuration, the densitometer K4 can move like a piston. Therefore, the positional relationship between the densitometer K4 and the pellet h3 can be adjusted to an appropriate measurement condition, and the gas hydrate in the pellet can be adjusted. The concentration can be measured accurately. Further, the concentration of the gas hydrate pellet h3 in the lateral width direction of the storage tank 31 can be grasped. The concentration signal can be input to the arithmetic unit 40 and displayed on the display 44 or output to the output unit 45 for confirmation.

(Example 5)
In the present embodiment, an alarm device and a warning light are added to the arithmetic device 40 already described. According to this embodiment, the operator's attention can be alerted and the worker can be released from the work that is constantly monitored.

(Example 6)
In this embodiment, as shown in FIG. 9, a cylindrical reflected light collector 29 is provided on the inner wall surface of the storage tank 31, and in a through hole (not shown) provided on the side surface of the reflected light collector 29. The tip of gas hydrate concentration meter K1 is inserted into By doing so, the absorbance (Abs) of the densitometer K1 is improved (see FIG. 5).

  In order to increase the reflectivity of the inner surface of the reflected light collector 29, it is desirable to deposit, for example, aluminum or an aluminum alloy on the inner surface of the reflected light collector 29, or to apply chrome plating or the like.

(Example 7)
The present embodiment is a gas hydrate concentration measuring device including a densitometer K1, an arithmetic device 40, and a pellet container 50 as shown in FIG. The pellet container 50 is formed in a truncated cone shape, and has a densitometer insertion port 51 at the uppermost part thereof.

  At this time, in order to increase the reflectivity of the inner wall surface of the pellet container 50, it is desirable to deposit aluminum, an aluminum alloy, or the like on the inner wall surface of the pellet container 50, or to perform chrome plating or the like.

  When a certain amount of pellets h3 collected as a sample is stored in the pellet container 50 and then irradiated with light from the densitometer K1 toward the bottom 52 of the pellet container 50, the pellets h3 and the inner wall surface of the pellet container 50 are reflected. The reflected light is condensed on the window 28a at the tip of the densitometer K1.

It is a schematic block diagram of the gas hydrate manufacturing apparatus which concerns on this invention. It is a principal part enlarged view of FIG. It is a systematic diagram of the control means of the gas hydrate manufacturing apparatus which concerns on this invention. It is a side view of a probe. It is a measurement chart of methane hydrate. (A) Schematic which shows another example of the gas hydrate manufacturing apparatus based on this invention, (b) The principal part enlarged view. (A) Schematic which shows another example of the gas hydrate manufacturing apparatus based on this invention, (b) The principal part enlarged view. It is the schematic which shows the example which has arrange | positioned the concentration meter to the storage tank in the gas hydrate manufacturing apparatus which concerns on this invention. It is the schematic which shows the other example which has arrange | positioned the concentration meter to the storage tank in the gas hydrate manufacturing apparatus which concerns on this invention. It is a schematic block diagram of the gas hydrate concentration measuring apparatus which concerns on this invention.

Explanation of symbols

K1 Densitometer 1 Generating device 2 Dehydrating device 3 Molding device 4 Small diameter tube 5 Pressure vessel 6 Stirrer 6a Stirring blade 6b Shaft 7 Heat exchanger 8 Screw pump 9 Sparger 11 Tubular body 11a Drain hole 12 Drainage chamber 15 Screw conveyor 17 Stirrer 17a Stirring blade 17b Rotating shaft 21a Screw blade 21b Shaft 22 Hopper 23a, 23b Molding roll 28 Probe 28a Near infrared irradiation port 28b Tapered portion 28b
29 Reflected light collector 31, 52 Storage tank 32 Cylinder device 50 Pellet container L9a Inclined tube V1, V2, V3, V4, V5 Signal

Claims (13)

  A gas hydrate generator for generating a gas hydrate by reacting a raw material gas and raw water, and a pellet molding machine for forming a pellet by compression molding the gas hydrate generated by the gas hydrate generator In the gas hydrate manufacturing apparatus, a gas hydrate manufacturing apparatus comprising a gas hydrate concentration meter for measuring a gas hydrate concentration in the pellets at a pellet outlet of the pellet molding machine.   A cylindrical reflected light collector is fitted in the pellet discharge outlet, and the tip of the gas hydrate densitometer is inserted into a through-hole provided in the side surface of the reflected light collector. The gas hydrate manufacturing apparatus according to claim 1.   The gas hydrate manufacturing apparatus according to claim 1, wherein the reflectivity of the inner wall surface of the pellet discharge outlet is increased.   A gas hydrate generator for generating a gas hydrate by reacting a raw material gas and raw water, and a pellet molding machine for forming a pellet by compression molding the gas hydrate generated by the gas hydrate generator In the gas hydrate manufacturing apparatus, an inclined pipe is provided in a pipe line of a pellet discharge line discharged from the pellet molding machine, and a gas hydrate concentration meter for measuring the gas hydrate concentration in the pellet is provided in the inclined pipe. A gas hydrate production apparatus characterized by the above.   A pellet fractionation device operated by a comparison means for comparing a gas hydrate concentration in a pellet measured by the gas hydrate concentration meter with a set concentration is provided downstream of the gas hydrate concentration meter. Item 5. A gas hydrate manufacturing apparatus according to Item 4.   A cylindrical reflected light collector is fitted into the inclined tube, and the tip of the gas hydrate densitometer is inserted into a through-hole provided in a side surface of the reflected light collector. Item 5. A gas hydrate manufacturing apparatus according to Item 4.   The gas hydrate manufacturing apparatus according to claim 4, wherein the reflectivity of the inner wall surface of the inclined tube is increased.   A gas hydrate generator for producing a gas hydrate by reacting a raw material gas and raw water, a pellet molding machine for molding a pellet by compression molding the gas hydrate produced by the gas hydrate generator, In a gas hydrate manufacturing apparatus for storing a pellet formed by a pellet molding machine, a gas hydrate concentration meter for measuring a gas hydrate concentration in the pellet is provided in the storage tank. Rate production equipment.   A gas hydrate concentration meter that measures a gas hydrate concentration is arranged on a cylinder rod that expands and contracts in a substantially horizontal direction, and the gas hydrate concentration in the pellets in the storage tank is measured by the gas hydrate concentration meter. The gas hydrate manufacturing apparatus according to claim 8.   A cylindrical reflected light collector is fitted in the storage tank, and the tip of the gas hydrate concentration meter is inserted into a through-hole provided in a side surface of the reflected light collector. Item 9. A gas hydrate manufacturing apparatus according to Item 8.   9. A gas hydrate supply device for supplying gas hydrate to a pellet molding machine is controlled based on a gas hydrate concentration signal in a pellet measured by a gas hydrate concentration meter. The gas hydrate manufacturing apparatus as described.   The gas hydrate production apparatus according to any one of claims 1 to 11, wherein the gas hydrate concentration meter is a near-infrared spectrometer.   A gas hydrate concentration measuring device comprising a gas hydrate concentration meter and an indicator, wherein the light radiated from the gas hydrate concentration meter is reflected on the gas hydrate concentration meter and the tip of the gas hydrate concentration meter A gas hydrate concentration measuring apparatus characterized in that a pellet container for condensing light is provided in a measuring section.