JP4463315B2 - Cogeneration system for the treatment of volatile organic compounds - Google Patents

Description

    The present invention relates to a cogeneration system for treating volatile organic compounds, and more particularly to a cogeneration system for treating volatile organic compounds that can save energy.

Recently, there is a cogeneration system for treating volatile organic compounds as an apparatus for treating volatile organic compounds generated in a factory, for example, toluene (see, for example, Patent Document 1).
This is because a generator is driven by a gas turbine prime mover that uses “processing gas containing a volatile organic compound” as a fuel source, and the exhaust gas discharged from the prime mover is led to an exhaust heat boiler. The steam is produced.
JP 2007-283182 A

In this cogeneration system for treating volatile organic compounds, in order to prevent the explosion of the compressor of the gas turbine, when the concentration of the volatile organic compound flowing into the compressor is high, the switching valve is switched to switch the compressor It is designed not to flow into.
However, in the above-mentioned cogeneration system for processing volatile organic compounds, when the concentration of the volatile organic compound in the processing gas varies, for example, when the concentration of the volatile organic compound in the processing gas is low, Since it is received in the compression chamber as it is, the amount of “fuel gas” other than “processing gas containing volatile organic compounds” into the combustion chamber of the gas turbine increases, which is not good in terms of energy saving. was there.

    An object of the present invention is to provide a cogeneration system for treating a volatile organic compound in which the above-mentioned problems are eliminated.

The cogeneration system for processing a volatile organic compound according to the present invention generates electric power by driving a generator with a prime mover of a gas turbine that uses a processing gas containing at least a volatile organic compound as a fuel source, and discharges it from the prime mover. A cogeneration system for processing a volatile organic compound in which the exhaust gas generated is guided to an exhaust heat boiler to produce steam, the chamber receiving the processing gas containing the volatile organic compound, wherein the volatile organic compound in the gas is adsorbed by the adsorbent, and a concentrator for concentrating the volatile organic compound is disengaged the volatile organic compound adsorbed in the adsorbent was, concentrate The adsorption to the adsorbent of the apparatus is performed by a first blower that guides the processing gas led from the chamber to the adsorbent. Detachment of the volatile organic compound adsorbed on the adsorbent is performed by air blown by a second blower that guides heated air to the adsorbent that adsorbs the volatile organic compound. A concentration sensor for detecting the concentration of the volatile organic compound in the processing gas containing the volatile organic compound concentrated by the concentrator, and the concentration detected by the concentration sensor is higher than a set value. In the case, the air blowing amount by the second air blowing unit is increased, and if it is lower than the set value, the air blowing control unit that controls the second air blowing unit to reduce the air blowing amount by the second air blowing unit, It is equipped with.

Further, the cogeneration system for processing a volatile organic compound according to claim 2 is the cogeneration system for processing a volatile organic compound according to claim 1, wherein the concentrating device and a gas turbine are connected and concentrated by the concentrating device. Further, a guide passage for guiding the processing gas containing the volatile organic compound to the gas turbine, a combustion device, a combustion device guide passage connecting the middle of the guide passage and the combustion device, and the combustion device guide passage provided, and an opening and closing valve for opening and closing the combustion device guide passage, the opening and closing valve, the pressure of the process gas to be processed by the gas turbine exceeds the set pressure is for opening operation

    Further, the cogeneration system for processing a volatile organic compound according to claim 3 is a processing gas containing the volatile organic compound received in the compression chamber in the cogeneration system for processing a volatile organic compound according to claim 1 or 2. And a first cooling means for cooling.

    A volatile organic compound processing cogeneration system according to claim 4 is the volatile organic compound processing cogeneration system according to any one of claims 1 to 3, wherein the volatile organic compound is received in the chamber. And a second cooling means for cooling the processing gas containing.

Further, the cogeneration system for processing a volatile organic compound according to claim 5 is the cogeneration system for processing a volatile organic compound according to any one of claims 1 to 4, wherein the concentrating device includes a processing zone, a regeneration A first guide passage which is divided into a zone and a cooling zone and communicates with the chamber and the inlet side of the processing zone; a second guide passage which communicates with the outlet side of the processing zone and the atmosphere; and heated air A third guide passage that guides to the inlet side of the regeneration zone; and a fourth guide passage that communicates with the outlet side of the regeneration zone and the gas turbine. A processing gas containing a volatile organic compound is sucked and guided to the processing zone via the first guide passage, and purified air that has passed through the processing zone is supplied to the second guide passage. It is intended to lead to the atmosphere through the second air blowing means, as well as guides the heated air to the regeneration zone through the third guide path, including passing through the regeneration zone the volatile organic compound treatment Gas is guided to the gas turbine through the fourth guide passage.

    According to the cogeneration system for processing a volatile organic compound according to claim 1, when the concentration of the processing gas containing the volatile organic compound concentrated by the concentrating device is higher than a set value, the blowing control means causes the second blowing. When the concentration is decreased by increasing the air flow rate by the means and lower than the set value, the second air flow rate by the second air supply device is decreased and supplied to the gas turbine to control the second air flow device so as to increase the concentration. The amount of “fuel gas” other than “processing gas containing volatile organic compounds” to the gas turbine is reduced by controlling the concentration of “processing gas containing volatile organic compounds” to be high. Thus, energy saving can be achieved.

    Further, according to the cogeneration system for processing a volatile organic compound according to claim 2, in addition to the effect of the invention according to claim 1, when the processing gas to be processed by a gas turbine is exceeded, the excess processing gas is exceeded. Can be guided to the combustion device via the combustion device guide passage.

    According to the cogeneration system for processing a volatile organic compound according to claim 3, in addition to the effect of the invention according to claim 1 or 2, the processing gas containing the volatile organic compound supplied to the gas turbine is cooled. Therefore, the efficiency of the gas turbine can be improved.

    Moreover, according to the cogeneration system for processing a volatile organic compound according to claim 4, in addition to the effects of the inventions according to claims 1 to 3, the processing includes a volatile organic compound that is received in the chamber by the second cooling means. By cooling the gas, heating of the adsorbent of the concentrator is prevented, the adsorption efficiency of the volatile organic compound to the adsorbent is improved, and the pretreatment of the processing gas containing the volatile organic compound accepted in the compression chamber is performed. It also has a role of cooling function.

A cogeneration system for treating volatile organic compounds according to an embodiment of the present invention will be described with reference to the drawings.
1 is a cogeneration system for processing volatile organic compounds, and the cogeneration system S for processing volatile organic compounds uses “processing gas containing volatile organic compounds” and another fuel as a fuel source. The generator 1 is driven by the prime mover of the gas turbine G to produce electric power, and the exhaust gas discharged from the prime mover is led to the exhaust heat boiler 2 to produce steam.
In addition, the above-mentioned “volatile organic compound” is toluene, xylene, ethyl acetate, etc., and is one of the causative substances of suspended particulate matter and photochemical oxidant that cause air pollution,
Moreover, the above-mentioned “other fuel” is, for example, city gas 13A, kerosene,
The above-mentioned “gas turbine G” is, for example, a micro gas turbine having a small power generation output of about 300 KW, and specifically, a micro gas turbine manufactured by Toyota Turbine & Systems Co., Ltd.
As will be described later, this cogeneration system S for processing volatile organic compounds collects volatile organic compounds generated in a factory or the like in a chamber 3, and “processing gas containing volatile organic compounds” is contained in the chamber 3. , And the pressure, air volume, and the like of the “processing gas containing a volatile organic compound” are controlled by the first blowing means 10, 11, 12, the pressure sensor 32, etc., and “the processing gas containing a volatile organic compound” The concentration of the volatile organic compound therein is controlled and increased by the second air blowing means 16, the concentration sensor 17 and the like, so as to treat efficiently.

3 is a chamber for receiving a “processing gas containing a volatile organic compound”, and through the chamber 3, one side A of the chamber 3 is a side where a volatile organic compound is generated, and the other side B of the chamber 3 is It is the side which processes a volatile organic compound.
The part that receives the “processing gas containing a volatile organic compound” is concentrated in one place of the chamber 3 because the pressure, the air flow, etc. of the “processing gas containing a volatile organic compound” in one chamber 3 are integrated. By controlling, the fluctuation of the amount of “processing gas containing volatile organic compounds” generated on one side A (“fluctuation of quantity” means low concentration with low air flow, high concentration with low air flow, and high concentration with medium air flow. This is because there is a case where the density and the high air volume are medium, the high air volume is a low density, and the high air volume is a high density.
For example, when the “processing gas containing a volatile organic compound” to be processed flows into the chamber 3 and the pressure in the chamber 3 is high, the amount of the “processing gas containing a volatile organic compound” to be processed decreases.
On the other hand, when the pressure in the chamber 3 is low, there may be a problem that more than the amount of “processing gas containing a volatile organic compound” to be processed flows.
In such a case, as described later, the above-described problems are prevented by maintaining the pressure P in the chamber 3 at a predetermined pressure (for example, 0 <P <50 Pa).

On the one side A described above, a plurality of chambers 4 in which a coating machine (not shown) in which “a processing gas containing a volatile organic compound” is generated are provided. In the present embodiment, “a plurality of chambers 4” is, for example, four chambers.
Each of the plurality of chambers 4 and the chamber 3 is provided with a plurality of guide passages 5 (for example, ducts) for guiding “processing gas containing a volatile organic compound”. In the present embodiment, for example, there are four “plurality of guide passages 5”.
Reference numeral 6 denotes a second cooling means for cooling the “processing gas containing a volatile organic compound” received in the chamber 3. By the second cooling means 6, the temperature of the “processing gas containing a volatile organic compound” is controlled to be about 55 ° C. or less, preferably 25 ° C. (other seasons other than summer) to 40 ° C. (summer). Is done.
In this way, by cooling the “processing gas containing a volatile organic compound” received in the chamber 3 by the second cooling means 6, the adsorbent of the concentrating device 7 to be described later is prevented from being heated and is volatile. In addition to improving the adsorption efficiency of the organic compound to the adsorbent, it also serves as a pre-cooling function of a “processing gas containing a volatile organic compound” received in the compression chamber 20 of the gas turbine G described later.
The first cooling means 28 cools “a processing gas containing a volatile organic compound” guided to a compression chamber 20 of a gas turbine G described later.

As shown in FIG. 2, for example, the chamber 3 is provided with a partition member 31 having an opening 31 a so as to cross the inside of the chamber 3. A pressure sensor 32 is provided in the chamber 3 and detects the pressure in the chamber 3.
In particular, the plurality of chambers 4, 4, 4, 4, and the plurality of chambers 4, 4, 4, 4, and the chamber 3 in which a coating machine that generates a processing gas containing a volatile organic compound is installed The pressure P in the chamber 3 detected by the pressure sensor 32 is connected to a plurality of guide passages 5, 5, 5, 5 that respectively guide “processing gas containing a volatile organic compound”. The air flow rate of the first air blowing means 10, 11, 12 is controlled so as to maintain <50 Pa).
As a result, the pressure in the chamber 3 is maintained at a predetermined pressure. As a result, there are few pressure fluctuations in the plurality of chambers 4, 4, 4, 4 in which the coating machines are installed, which adversely affects the coating operation of the coating machine. Does not affect.

The pressure in the chamber 3 is maintained at a predetermined pressure for the following reason.
That is, if the pressure in the chamber 3 is not controlled, for example, when the pressure in the chamber 3 decreases, more than necessary “processing gas containing a volatile organic compound” flows from the coating machine side through the guide passage 5. , The pressure in the chamber 4 on the coating machine side drops sharply,
On the other hand, when the pressure in the chamber 3 increases, the amount of “processing gas containing a volatile organic compound” decreases from the coating machine side via the guide passage 5, and the pressure in the chamber 4 on the coating machine side. Soars. As a result, the pressure fluctuation in the chamber 4 on the coating machine side adversely affects the coating work of the coating machine. In order to prevent this, the amount of air blown by the first blower means 10, 11, and 12 is controlled so that the pressure P in the chamber 3 is kept at a predetermined pressure (0 <P <50 Pa).
When it is desired to increase the pressure in the chamber 3, the air flow rate of the first air blowing means 10, 11, 12 is decreased. Conversely, when it is desired to reduce the pressure in the chamber 3, the first air blowing means 10, 11 is used. , 12 is increased.
In addition to the guide passage 5, an atmospheric suction passage 33, an over exhaust passage 34, an emergency release passage 35, and a guide passage 8 are connected to the chamber 3.
The atmospheric suction passage 33, the over exhaust passage 34, and the emergency release passage 35 are provided with dampers 33 ′, 34 ′, and 35 ′ that adjust the opening and closing of the passages. The guide passage (first guide passage) 8 is a passage (for example, a duct) that guides a “processing gas containing a volatile organic compound” received in the chamber 3 to a concentrator 7 described later.

The concentrating device 7 adsorbs the volatile organic compound in the processing gas led from the chamber 3 with an adsorbent, and heats the adsorbent that adsorbs the volatile organic compound, whereby the volatilization adsorbed on the adsorbent. The volatile organic compound is released to concentrate the volatile organic compound.
Further, as shown in FIG. 3, the concentrator 7 is divided into a “processing zone 75”, a “regeneration zone 76”, and a “cooling zone 77” by a casing 71 and partition walls 72, 73, 74, and a motor 78, It rotates through a belt 79.
That is, when the “processing gas containing a volatile organic compound” passes through the processing zone 75, the volatile organic compound in the processing gas is adsorbed and removed by the adsorbent and serves as purified air as a guide passage (second guide passage) ( For example, the gas is discharged through a duct 9.
That is, the adsorption of the volatile organic compound in the processing gas to the adsorbent of the concentrator 7 is performed by blowing air from the first blowing unit that guides the processing gas led from the chamber 3 to the adsorbent. The air blowing means sucks the “processing gas containing a volatile organic compound” in the chamber 3 and guides it to the processing zone 75 via the guide passage (first guide passage) 8, and purifies the gas that has passed through the processing zone 75. The air is guided to the atmosphere through a guide passage (second guide passage) 9. The first blower means is, for example, a plurality of blowers 10, 11, and 12.
In this embodiment, the first blower means is a plurality of blowers 10, 11, and 12. However, the present invention is not limited to this, and a single blower whose rotation speed is variably controlled. You may make it respond | correspond.
One end of the above-described guide passage (first guide passage) 8 is branched into the chamber 3, and the other end of the guide passage 8 is branched halfway, one of the branches is on the inlet side of the “processing zone 75” and the other of the branches. Are provided so as to face the inlet side of the “cooling zone 77”, that is, communicate with each other. In addition, one end of the above-described guide passage (second guide passage) 9 is provided so as to face the outlet side of the processing zone 75 of the concentrating device 7 and the other end of the guide passage 9 faces the atmosphere. ing.

The plurality of blowers 10, 11, and 12 are controlled by the blow control unit 13. The air blowing control means 13 controls the air blowing amount of the first air blowing means 10, 11, 12 so that the pressure in the chamber 3 detected by the pressure sensor 32 is maintained at P (0 <P <50 Pa).
Therefore, if the pressure P in the chamber 3 detected by the pressure sensor 32 is kept within the range of 0 <P <50 Pa, for example, if the pressure P in the chamber 3 exceeds 50 Pa, a plurality of blowers 10, 11 and 12 so that the air flow rate is increased, and when the pressure P in the chamber 3 is less than 0 Pa, the air flow rate of the first air blowing means 10, 11 and 12 is controlled to be reduced, or The damper 33 ′ is opened and the atmosphere is taken into the chamber 3 through the atmosphere suction passage 33 (see FIG. 6).
If the pressure in the chamber 3 does not decrease despite the increase in the amount of air blown by the plurality of blowers 10, 11, 12, the damper 34 'is opened or the damper 35' is opened as shown in FIG. Alternatively, both the dampers 34 ′ and 35 ′ are opened.) The processing gas in the chamber 3 is transferred from the over exhaust passage 34 or the emergency opening passage 35 (or the over exhaust passage 34 and the emergency opening passage 35) to the chamber 3. The pressure in the chamber 3 is lowered by releasing the pressure to the outside.

Further, the adsorbent that has adsorbed the volatile organic compound rotates and moves to the regeneration zone 76, the adsorbent is heated by high-temperature air (for example, 180 ° C.), and the volatile organic compound adsorbed on the adsorbent is released.
The high-temperature air uses, for example, exhaust heat of the exhaust heat boiler 2 and is guided to the regeneration zone 76 through the guide passage 14. The guide passage (third guide passage) 14 guides to the inlet side of the regeneration zone 76, and one end of the guide passage (third guide passage) 14 is an exhaust heat gas passage (not shown) of the exhaust heat boiler 2. The other end of the guide passage (third guide passage) 14 is disposed so as to face the regeneration zone 76 of the concentrator 7.
Then, the volatile organic compound separated from the adsorbent is guided to the gas turbine G via the guide passage (fourth guide passage) 15. The guide passage (fourth guide passage) 15 communicates with the outlet side of the processing zone 75 of the concentrating device 7 and the gas turbine G, and gasses “processing gas containing a volatile organic compound” concentrated by the concentrating device 7. It guides to the turbine G.
The above-described detachment of the volatile organic compound adsorbed on the adsorbent is performed by blowing air from a second blowing unit that guides heated air to the adsorbent that has adsorbed the volatile organic compound. The air blowing means is, for example, the blower 16 that guides the high-temperature air in the guide passage (third guide passage) 14 to the regeneration zone 76 and passes through the regeneration zone 76 “processing gas containing a volatile organic compound”. Is guided to the gas turbine G through a guide passage (fourth guide passage) 15. In the air flow in the guide passage (fourth guide passage) 15, a concentration sensor 17 that detects the concentration of the volatile organic compound is provided on the downstream side of the blower 16.
Further, the adsorbent from which the volatile organic compound has been released rotates and moves to the cooling zone 77 and is cooled by cooling air (for example, air of 55 ° C. or lower). The air that has passed through the cooling zone 77 is guided to the mixing chamber 13 ′ via the passage 8 ′, heated in the mixing chamber 13 ′ by the fluid in the guide passage (third guide passage) 14, and then returned to the regeneration zone 76. It has come to be guided. One end of the above-described passage 8 ′ is provided so as to face the outlet side of the cooling zone 77 of the concentrating device 7, and the other end of the passage 8 ′ is provided so as to face the mixing chamber 13 ′.

Reference numeral 18 denotes air blowing control means for controlling the air blowing amount of the second air blowing means 16 so that the concentration of the volatile organic compound detected by the concentration sensor 17 is maintained at the set value.
When the concentration detected by the concentration sensor 17 is higher than the set value, the air blowing control unit 18 increases the amount of air blown by the second air blowing unit 16 so as to reduce the concentration,
On the contrary, when it is lower than the set value, the second blowing means 16 is controlled so as to decrease the amount of air blown by the second blowing means 16 so as to increase the density.
The set value of the above-mentioned concentration is, for example, 20,000 ppmC, and this 20,000 ppmC is a value that is efficient for the gas turbine G.

Further, as shown in FIG. 4, the gas turbine G compresses the “processing gas containing a volatile organic compound” concentrated by the concentrating device 7, and the compressed “volatile” from the compression chamber 20. It has a combustion chamber 21 that receives and burns a “processing gas containing a reactive organic compound” and a fuel gas, and a turbine 22 that rotates with the combustion gas from the combustion chamber 21. A supply passage 23 guides fuel gas (for example, city gas 13 </ b> A) to the combustion chamber 21.
1, 24 denotes an exhaust duct, 25 denotes a combustion device, 26 denotes a combustion device guide passage that branches from the middle of the guide passage 15 and guides the processing gas to the combustion device 25, and 27 denotes the processing gas processed by the gas turbine. The on-off valve 28 that opens when the pressure exceeds the first cooling means 28 cools the processing gas containing the volatile organic compound received in the compression chamber 20.
The on-off valve 27 that opens when the amount of the processing gas processed by the gas turbine G exceeds, for example, opens when a pressure sensor (not shown) provided in the guide passage 15 exceeds a set pressure. .
Therefore, the concentrated “processing gas containing a volatile organic compound” is supplied to the gas turbine G with the highest priority, and if surplus occurs in the concentrated “processing gas containing a volatile organic compound”, the guide passage (first (4 guide passage) 15 is increased in pressure, and this is detected by a pressure sensor (not shown) provided in the guide passage (fourth guide passage) 15 to open the on-off valve 27. The “processing gas containing a volatile organic compound” is guided to the combustion device 25 through the combustion device guide passage 26 and burned and processed.

Therefore, the above-described cogeneration system S for processing volatile organic compounds is a coating machine (not shown) that generates a “processing gas containing a volatile organic compound” at the time of startup, that is, on one side A. Since no volatile organic compound is generated, the pressure in the chamber 3 decreases as it is due to the ON operation of the first blowing means 10, 11, 12.
When a “processing gas containing a volatile organic compound” is received into the chamber 3 from the coating machine side through the guide passage 5 in a state where the pressure in the chamber 3 is reduced, a large amount of “processing containing a volatile organic compound” is performed. Gas "flows into the chamber 3 and the pressure in the chamber 4 on the coating machine side drops rapidly, and the pressure fluctuation in the chamber 4 on the coating machine side adversely affects the coating operation of the coating machine. .
Therefore, as shown in FIG. 5, the damper 33 ′ for adjusting the opening and closing is opened, and the atmosphere is guided from the atmospheric suction passage 33 into the chamber 3 to prevent the pressure in the chamber 3 from decreasing. Yes.
Further, when the cogeneration system S for processing volatile organic compounds is started, the processing gas containing the volatile organic compounds concentrated by the concentrating device 7 does not flow into the compression chamber 20, so that the supply passage 23 is connected to the combustion chamber 21. The fuel gas (for example, city gas 13A) is guided through the air.
Thereafter, on one side A, when a coating machine (not shown) in the chamber 4 is operated and a volatile organic compound is generated, the damper 33 ′ is closed and the introduction of the atmosphere from the atmosphere suction passage 33 is stopped. .
Thereafter, a process gas containing a volatile organic compound is received into the chamber 3, and the air blowing control means 13 controls the pressure P in the chamber 3 detected by the pressure sensor 32 to keep within the range of 0 <P <50 Pa. The air volume of one air blowing means 10, 11, 12 is controlled.
In addition, control of the ventilation volume of the 1st ventilation means 10, 11, and 12 is not limited to the appropriate number of the first ventilation means 10, 11, and 12, and each of the first ventilation means 10, 11, and 12 is controlled. This is a combination of the number of rotations.

Then, the processing gas guided from the chamber 3 is branched through the guide passage (first guide passage) 8 and guided to the processing zone 75 and the cooling zone 77 of the concentrating device 7. The processing gas that has passed through the processing zone 75 of the concentrating device 7 is guided to the guide passage 9, and the processing gas that has passed the cooling zone 77 of the concentrating device 7 is guided to the guide passage 8 ′.
That is, when the processing gas containing the volatile organic compound passes through the processing zone 75, the volatile organic compound in the processing gas is adsorbed and removed by the adsorbent to become purified air, and enters the atmosphere through the guide passage 9. Discharged,
On the other hand, the air that has passed through the cooling zone 77 cools the adsorbent and is guided to the mixing chamber 13 ′ via the guide passage 8 ′.
The mixing chamber 13 ′ is a mixture of high-temperature air (for example, 550 ° C.) heat-exchanged with the exhaust heat of the exhaust heat boiler 2 and air that has passed through the cooling zone 77 (for example, 160 ° C.). (For example, 180 ° C.).
This relatively hot air (for example, 180 ° C.) is guided to the regeneration zone 76 via the guide passage (third guide passage) 14.
In the regeneration zone 76, since the adsorbent is heated by relatively high temperature air (for example, 180 ° C.), the volatile organic compound adsorbed on the adsorbent is separated, and a processing gas containing the separated volatile organic compound (for example, , 50 ° C. to 70 ° C.) is guided to the guide passage (fourth guide passage) 15.

The “processing gas containing a volatile organic compound” led to the guide passage (fourth guide passage) 15 cools the “processing gas containing a volatile organic compound” by the first cooling means 28, for example, The temperature is controlled in the range of 25 ° C. (other seasons other than summer) to 40 ° C. (summer), and is led to the compression chamber 20 of the gas turbine G to improve the efficiency of the gas turbine G.
In the combustion chamber 21, the “processing gas containing a volatile organic compound” compressed in the compression chamber 20 and the fuel gas (for example, city gas 13 </ b> A) supplied through the supply passage 23 are mixed. Burned.
The combustion gas burned in the combustion chamber 21 rotates the turbine 22 to generate power with the generator 1 and is guided to the exhaust heat boiler 2 through the duct 30. Air (for example, 550 ° C.) that has become high temperature using a part of the exhaust heat of the exhaust heat boiler 2 is guided to the above-described mixing chamber 13 ′ via the guide passage (third guide passage) 14. .
When the processing gas to be processed by the gas turbine G is exceeded, a pressure sensor (not shown) provided in the guide passage (fourth guide passage) 15 exceeds a set pressure, and this is detected and the on-off valve 27 is opened. Then, the surplus process gas is guided to the combustor 25 through the combustion apparatus guide passage 26, and the surplus process gas is burned and processed.

Further, when the pressure P in the chamber 3 does not reach a predetermined pressure (for example, 0 Pa) during operation of the volatile organic compound processing cogeneration system S, the amount of air blown by the first blower means 10, 11, 12 is reduced. Alternatively, as shown in FIG. 6, the damper 33 ′ of the atmospheric suction passage 33 is opened and the atmosphere is introduced into the chamber 3, and the atmospheric air is passed through the atmospheric suction passage 33, the chamber 3, and the guide passage 8. It guide | induces to the concentration apparatus 3 by the 1st ventilation means 10,11,12.
This is because, during operation of the cogeneration system S using volatile organic compounds, the “processing gas containing volatile organic compounds” is not sufficiently received in the chamber 3, so that the pressure in the chamber 3 decreases as it is. This is in order to avoid malfunctions.
When the pressure in the chamber 3 decreases, more than necessary “processing gas containing a volatile organic compound” flows from the coating machine side through the guide passage 5, and the pressure in the chamber 4 on the coating machine side decreases. It suddenly descends, causing a problem that adversely affects the coating operation of the coating machine due to the pressure fluctuation in the chamber 4 on the coating machine side.

Further, when the gas turbine G is urgently (abnormal) stopped, an emergency (abnormal) stop of the gas turbine G is detected by a detection means (not shown), the damper 35 ′ of the emergency opening passage 35 is opened, and the “volatile” in the chamber 3 is opened. The processing gas containing an organic compound ”can be released out of the chamber 3 (see FIG. 7). In some cases, the damper 34 ′ of the over exhaust passage 34 may be opened.
This is because, when the gas turbine G stops urgently (abnormally) during operation of the volatile organic compound-based cogeneration system S, high-concentration volatile organic compounds are present in the guide passage 5, the chamber 3, the guide passages 8, 15 and the like. If it stays and is left untreated, there is a risk of explosion due to volatile organic compounds.

FIG. 1 is a schematic configuration diagram of a cogeneration system for processing volatile organic compounds according to an embodiment of the present invention. FIG. 2 is a schematic partially enlarged configuration diagram showing the vicinity of the chamber portion in FIG. FIG. 3 is a schematic partially enlarged perspective view illustrating the vicinity of the site of the concentrator in FIG. 1 in an enlarged manner. FIG. 4 is a schematic partially enlarged configuration diagram showing an enlarged portion of the vicinity of the gas turbine and the exhaust heat boiler of FIG. FIG. 5 is a schematic partially enlarged configuration diagram for explaining the function of the chamber when the cogeneration system for processing a volatile organic compound in FIG. 1 is started. FIG. 6 is a schematic partially enlarged configuration diagram for explaining the function of the chamber when the pressure in the chamber is lowered during the operation of the cogeneration system for processing a volatile organic compound of FIG. FIG. 7 is a schematic partially enlarged configuration diagram for explaining the function of the chamber at the time of emergency (abnormal) stop of the gas turbine of the cogeneration system for processing volatile organic compounds of FIG. FIG. 8 is a schematic partially enlarged configuration diagram for explaining the function of the chamber when the pressure in the chamber rises during operation of the volatile organic compound processing cogeneration system of FIG. 1.

Explanation of symbols

S Cogeneration system for processing volatile organic compounds G Gas turbine 1 Generator 2 Waste heat boiler 16 Second blowing means 17 Concentration sensor 18 Blower control means

Claims (5)

A generator is driven by a gas turbine prime mover that uses a processing gas containing at least a volatile organic compound as a fuel source, and steam is produced by introducing exhaust gas discharged from the prime mover to an exhaust heat boiler. A cogeneration system for treating volatile organic compounds,
A chamber for receiving a processing gas containing the volatile organic compound;
A concentrating device that adsorbs the volatile organic compound in the processing gas guided from the chamber with an adsorbent, desorbs the volatile organic compound adsorbed on the adsorbent, and concentrates the volatile organic compound; With
Adsorption to the adsorbent of the concentrator is performed by blowing air from a first blowing unit that guides the processing gas led from the chamber to the adsorbent.
The detachment of the volatile organic compound adsorbed on the adsorbent is performed by blowing air from a second blowing unit that guides heated air to the adsorbent that has adsorbed the volatile organic compound,
A concentration sensor for detecting the concentration of the volatile organic compound in the processing gas containing the volatile organic compound concentrated by the concentrator;
When the concentration detected by the concentration sensor is higher than a set value, the amount of air blown by the second blower is increased, and when lower than the set value, the amount of blown air by the second blower is decreased. Air blowing control means for controlling the second air blowing means;
A cogeneration system for treating volatile organic compounds characterized by comprising: A guide passage connecting the concentrating device and the gas turbine, and guiding the processing gas containing the volatile organic compound concentrated by the concentrating device to the gas turbine;
A combustion device;
A combustion device guide passage connecting the middle of the guide passage and the combustion device;
An on-off valve provided in the combustion device guide passage and opening and closing the combustion device guide passage ,
The cogeneration system for processing volatile organic compounds according to claim 1, wherein the on-off valve opens when the pressure of the processing gas processed by the gas turbine exceeds a set pressure . The volatile organic compound processing cogeneration system according to claim 1, further comprising: a first cooling unit that cools the processing gas containing the volatile organic compound supplied to the gas turbine. And a second cooling means for cooling a processing gas containing a volatile organic compound received in the chamber. 4. The volatile organic compound processing code according to claim 1, Generation system. The concentrator is divided into a processing zone, a regeneration zone, and a cooling zone,
A first guide passage communicating with the chamber and the inlet side of the processing zone;
A second guide passage communicating with the outlet side of the processing zone and the atmosphere;
A third guide passage for guiding the heated air to the inlet side of the regeneration zone;
A fourth guide passage communicating with the outlet side of the regeneration zone and the gas turbine;
The first blowing means sucks the processing gas containing the volatile organic compound in the chamber and guides it to the processing zone through the first guide passage, and the purified air that has passed through the processing zone is It leads to the atmosphere through 2 guide passages,
The second air blowing means guides the heated air to the regeneration zone through the third guide passage, and allows the processing gas containing the volatile organic compound that has passed through the regeneration zone to pass through the fourth guide passage. The volatile organic compound processing cogeneration system according to any one of claims 1 to 4, wherein the cogeneration system is guided to the gas turbine.

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