JP5401302B2 - Operating method of pressurized fluidized incinerator and pressurized fluidized incinerator equipment - Google Patents

Description

  The present invention relates to a method for operating a pressurized fluidized incinerator and a pressurized fluidized incinerator for incineration of combustible waste such as sludge generated in sewage treatment.

  In incineration of combustible waste such as sewage sludge, there is a pressurized fluidized incineration method as one of means for effectively taking out the energy of the incinerated product. Conventionally, a bubble-flow furnace used for incineration that does not perform pressurization continuously operates a flow blower and operates an induction fan for forcibly exhausting air from a chimney in a smoke treatment tower. On the other hand, the pressurized fluidized incinerator equipment uses a turbine-compressor turbocharger that uses exhaust gas energy for the air blowing system for pressurization, fluidization and combustion air, and therefore uses a starter blower at the time of startup. Therefore, there is an advantage that the running cost is reduced and the installation of the induction fan becomes unnecessary. Furthermore, in normal operation, even if the starter blower is stopped, the air blown by the compressor driven by the turbine rotation by the exhaust gas energy is stably performed, and is used for furnace pressurization, fluidized bed flow and combustion air transfer. It becomes the self-sustaining operation state where the blowing power of the fan used is unnecessary.

  In such a pressurized fluidized incinerator facility, as shown in FIG. 10, the turbine 2a is driven by the pressurized fluidized incinerator 1 and exhaust gas generated in the pressurized fluidized incinerator 1, and the combustion air is pumped by the compressor 2b. Heat exchange is performed between the supercharger 2, the starter blower 3 that pushes combustion air into the compressor 2b when the supercharger 2 is started, the combustion air from the supercharger 2, and the exhaust gas from the pressurized flow incinerator 1. An air preheater 4 to be obtained, a high-temperature dust collector 5 that collects exhaust gas from the air preheater 4, a white smoke-preventing air preheater 6 that prevents white smoke in the exhaust gas flowing down from the turbine 2a, and white smoke-preventing air preheating A smoke treatment tower 7 for treating the exhaust gas flowing down from the vessel 6 and a chimney 8 for discharging the white smoke prevention air from the white smoke prevention air preheater 6 and the exhaust gas from the smoke treatment tower 7 to the outside air. .

  In the pressurized fluidized incinerator 1, a supply flow path 9 for supplying an object to be treated such as sludge, and a first air supply flow for supplying combustion air from the compressor 2 b of the supercharger 2 via the air preheater 4. A second air supply passage for branching from between the compressor 2b and the air preheater 4 by the passage 10 and the first air supply passage 10 to supply combustion air to the starting burner 1a of the pressurized fluidized incinerator 1 11 are arranged. Further, the pressurized flow incinerator 1 is provided with a discharge passage 12 for discharging the exhaust gas to the white smoke prevention air preheater 6 via the air preheater 4, the high temperature dust collector 5, and the turbine 2 a of the supercharger 2. ing.

  An air supply passage 13 for supplying combustion air from the starter blower 3 is disposed on the compressor 2b side of the supercharger 2, and the turbine 2a of the supercharger 2 is driven in the air supply passage 13. Accordingly, an outside air supply passage 14 for sucking combustion air from outside air is connected, and a pressure adjusting passage 15 that can adjust the discharge air pressure of the starter blower 3 is connected. In FIG. 10, 16 is a white smoke prevention fan corresponding to the white smoke prevention air preheater 6, 17 is a connection flow path connecting the white smoke prevention fan 16 to the white smoke prevention air preheater 6, and 18 is white smoke prevention. An exhaust gas discharge passage connected from the air preheater 6 to the flue gas treatment tower 7, 19 is a white smoke prevention air passage connected from the white smoke prevention air preheater 6 to the chimney 8, and 20 is a chemical solution in the exhaust gas treatment tower 7. A flue gas treatment tower circulation pump 21 corresponding to the circulation indicates a circulation passage 21 for circulating the treatment liquid between the flue gas treatment tower 7 and the flue gas treatment tower circulation pump 20. Further, in FIG. 10, the symbols A, B, C, and D indicate that they are connected to the symbols A, B, C, and D in FIG.

  The starter blower 3 is provided with an operation / stop switch 22 so that it can be operated or stopped via a drive means 3a such as a motor as shown in FIG. A pressure adjusting valve 23 that can be adjusted is provided, and an air suction valve 24 that can adjust the air suction amount is provided in the outside air supply passage 14. A combustion air valve 25 capable of adjusting the amount of combustion air in order from the upstream side, a combustion air valve 25, and a combustion are provided at a location in the first air supply passage 10 from the compressor 2 b of the supercharger 2 to the air preheater 4. A flow meter 26 for measuring the flow rate of the working air is provided. Further, an air supply on / off valve 11a (see FIG. 10) for adjusting the flow rate of air is provided at a location in the second air supply passage 11 from the compressor 2b to the pressurized fluidized incinerator 1. Furthermore, in the second air supply channel 11 from the compressor 2b to the air supply on / off valve 11a, a use supply channel that can effectively use surplus combustion air after normal operation of the pressurized fluidized incinerator 1 27 and a pressurized air valve 28 is provided in the use supply flow path 27. Further, a thermometer 12a for measuring the temperature of the exhaust gas is provided at a location in the discharge flow path 12 from the high temperature dust collector 5 to the turbine 2a. Further, a flow meter 29 for measuring the flow rate of the exhaust gas is provided at a location in the exhaust passage 12 from the turbine 2a toward the white smoke prevention air preheater 6.

  Here, the combustion air flow meter 26 is connected to a flow rate indicating controller (FIC) 31 via a signal flow rate signal line 30, and the flow rate indicating controller 31 is connected to the combustion air valve signal line 32. In addition to being connected to the combustion air valve 25 via the first selector 33 and the second selector 34, they are connected to the pressurized air valve 28 via the first selector 33 and the pressurized air valve signal line 35. . As a result, the flow rate indicating controller 31 receives the measurement value signal from the combustion air flow meter 26, performs calculation, and outputs a control signal corresponding to the deviation from the set value, via the first selector 33. A control signal is sent to either the air valve 25 or the pressurized air valve 28 by a switching signal input to the first selector 33 described below, and further controlled to the combustion air valve 25 via the second selector 34. A signal is sent.

  In addition, the first selector 33 switches the start / stop switch 22 of the starter blower 3, that is, switches between the self-sustained switch operation and the normal operation, and transmits the starter blower 3 transmitted via the first signal line 36. Depending on the state, control signal transmission switching between the combustion air valve 25 and the pressurized air valve 28 is performed. Further, the second selector 34, the combustion air valve 25, the air suction valve 24, and the pressure adjustment valve 23 are controlled by a self-supporting switching program 37. Here, as shown in FIG. 12, the self-sustained switching program 37 sets the combustion air valve 25, the air suction valve 24, and the pressure regulating valve 23 of the starter blower 3 to a predetermined opening with a predetermined time. Yes. As a specific example, as shown in FIG. 11, the self-supporting switching program 37 is switched by the second selector 34 according to the switching signal transmitted by the second signal line 39 in accordance with the operation of the start switch 38 that is the calculation start trigger of the program itself. The control signal system to the combustion air valve 25 is adjusted from the flow of the flow meter 26 to the flow rate indicating controller 31 to the first selector 33 to the combustion air valve 25 to adjust the first timer 41 to the first opening. The flow is immediately switched to the flow of the vessel 42 to the second selector 34 to the combustion air valve 25, and the combustion air is passed from the third signal line 40 via the first timer 41, the first opening degree regulator 42, and the second selector 34. The valve 25 is sequentially switched to a predetermined opening while changing the output value of the first opening controller 42 after a certain time has elapsed, and further, a second timer 44 and a second opening adjustment are performed by a fourth signal line 43. The air suction valve 24 is sequentially switched to a predetermined opening degree while changing the output value of the second opening degree controller 45 every time after a predetermined time has passed through 45, and further, a third timer 47 is switched from the fifth signal line 46. Then, the pressure adjustment valve 23 of the starter blower 3 is switched to the predetermined opening degree sequentially while changing the output value of the third opening degree regulator 48 after a certain period of time via the third opening degree regulator 48. ing. In FIG. 11, reference numerals * 1, * 2, * 3, * 4, and * 5 indicate that the same reference numerals are connected to each signal line.

  When shifting from the first air blowing start stage to the normal operation stage, as shown in FIG. 13, the process proceeds to the normal operation stage through the air blowing start stage, the temperature raising / pressurizing stage, and the self-sustaining switching stage (switching to the self-sustaining operation state). Like to do.

  In the air blowing start stage, first, it is confirmed that the air suction valve 24, the combustion air valve 25, and the pressure regulating valve 23 of the starter blower 3 are fully closed. Next, the start / stop switch 22 of the starter blower 3 is set to the operation side to start the starter blower 3, and air is pushed into the compressor 2 b of the supercharger 2, and then the opening degree of the combustion air valve 25 is controlled. Then, the flow rate (air amount) of the combustion air is gradually increased, and the combustion air is supplied to the pressurized fluidized incinerator 1. At this time, the rotation speed of the starter blower 3 is constant.

  In the temperature raising / pressurizing stage, a part of the combustion air pushed by the starter blower 3 through the compressor 2b of the supercharger 2 is opened in the second air supply passage 11 by opening the air supply on / off valve 11a. Is supplied to the inside of the furnace near the starting burner 1a, and the starting burner 1a of the pressurized flow incinerator 1 is ignited so that combustion in the furnace and the flow of a heat medium such as sand start. The incinerator 1 also starts burning. Auxiliary fuel is introduced into the starting burner 1a, an oil gun (not shown), and the like, and combustion in the furnace is actively performed. Since the combustion air has reached a predetermined flow rate, the flow of the heat medium in the fluidized bed is also reduced. Thriving, the pressurized fluidized incinerator 1 rises in temperature and pressure. As a result, high-temperature and high-pressure exhaust gas is gradually generated, and the high-pressure exhaust gas is conveyed through the discharge flow path 12, and the turbine 2 a of the supercharger 2 is driven by the energy of the exhaust gas. It gradually increases and the work exerted on the turbine 2a increases to increase the turbocharger rotational speed. At this time, since the opening of the combustion air valve 25 is controlled to maintain the flow rate of the combustion air, the static pressure component of the combustion air conveyance power by the drive of the starter blower 3 is gradually reduced. It will be enough.

  At the self-sustained switching stage, the operator confirms the increase in the volume of the exhaust gas accompanying the temperature rise / pressure increase with the thermometer 12a and the flow meter 29, and then judges that the operation of the starter blower 3 is unnecessary from the temperature and flow rate of the exhaust gas. Then, the start switch 38 of the self-supporting switching program 37 is turned on. In the self-sustained switching program 37, the combustion air valve 25, the air suction valve 24, and the pressure adjusting valve 23 of the starter blower 3 are set to a predetermined opening degree with a lapse of a predetermined time, and the flow rate and pressure of the combustion air are stabilized. Let After the combustion air flow rate and pressure are stabilized, the operator manually stops the starter blower 3.

  In the normal operation stage, after the start-up blower 3 is stopped, the pressurized fluidized incinerator 1 is changed to a normal incineration operation by supplying a predetermined amount of sludge and introducing auxiliary fuel, and the supercharger 2 is operated in the pressurized fluidized incinerator 1. It is driven only by exhaust gas to ensure that a predetermined amount of combustion air is introduced into the furnace. Further, in the normal operation stage, a signal indicating that the opening of the combustion air valve 25 is fully opened is steadily sent, and the measured value of the flow meter 26 by the flow rate indicating controller 31 in which the control signal transmission path is switched by the second selector 34. The opening degree of the pressurized air valve 28 is controlled in accordance with the calculated output value from the engine so that the surplus combustion air by the compressor 2b of the supercharger 2 can be effectively used separately by the utilization supply flow path 27. .

  In addition, as prior art document information of the pressurized fluidized incinerator equipment related to the present invention, for example, the following Patent Document 1 already exists, and the prior art such as the flow control of combustion air and the switching of the starter blower. For example, Patent Documents 2 and 3 already exist as technical documents.

JP 2008-25966 A JP 2005-28251 A JP-A-5-248259

  However, the operator starts the self-sustained switching program 37 in a situation where the operation of the starter blower 3 is necessary, that is, in a situation where the amount of combustion air supplied is insufficient only by the air blown by the compressor driven by the turbine rotation by the exhaust gas energy. If this happens, the flow rate and pressure of the combustion air will fluctuate significantly (indicated by the drop in the air amount in FIG. 13), and the operator must constantly monitor the state of the combustion air flow rate and so on to determine the appropriate situation. There was a problem that had to be done. In particular, since the starter blower 3 has a constant rotation speed from operation to stop, there is a problem that it is difficult to determine whether or not the starter blower 3 needs to be blown.

  Further, in the self-sustaining switching stage, if the settings of the air suction valve 24, the combustion air valve 25, and the opening of the pressure regulating valve 23 of the starter blower 3 are not appropriate, the flow rate and pressure of the combustion air greatly fluctuate. Depending on the situation, the turbine-compressor and / or starter blower may be adversely affected by surging, etc., so that the self-sustained switching program 37 must be set strictly with reference to many experiences of operators and the like. was there.

  In view of such circumstances, the present invention automates the process of the self-sustained switching stage to eliminate the need for the operator to judge the situation, and to operate a pressurized fluidized incinerator that suppresses fluctuations in the flow rate and pressure of combustion air and It is intended to provide pressurized fluidized incinerator facilities.

The operation method of the pressurized fluidized incinerator of the present invention includes a pressurized fluidized incinerator having a fluidized bed, a supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator, and the pressurized fluidized A method for operating a pressurized fluidized incinerator comprising an air supply at the start of combustion in an incinerator and a blower for starting rotation speed control used for starting the supercharger,
Start the operation of the starter blower at the start of combustion to start the operation of the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and start based on the measured value of the combustion air flow rate at the compressor outlet An air blowing start stage that adjusts the rotational speed of the blower to reach the first predetermined flow rate setting value;
After the combustion air flow rate has reached the first predetermined flow rate setting value, the pressurized fluidized incinerator is heated and pressurized by introducing combustible waste and / or auxiliary fuel. The generated exhaust gas energy gives a driving force to the turbine rotation of the turbocharger, and further adjusts the rotation speed of the starter blower based on the measured value of the combustion air flow rate at the compressor outlet to the pressurized flow incinerator. A temperature raising / pressurizing step for controlling the flow rate of the combustion air to be introduced to a second predetermined flow rate setting value;
As a result of an increase in the amount of exhaust gas due to combustion in the pressurized fluidized incinerator, the amount of combustion air conveyed by the compressor in response to the driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. An air intake valve provided in an outside air supply passage that branches off from the air supply passage between the starter blower and the compressor and communicates directly with the outside air when the inlet air pressure of the compressor becomes equal to or less than a specified value. A self-sustained switching stage that opens according to the measured value of the inlet air pressure and sucks outside air, and stops the starter blower after the air suction valve holds a predetermined opening or more for a predetermined time;
A normal operation stage in which the supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate setting value is secured as the amount of combustion air introduced into the pressurized fluidized incinerator; , Are provided.

The operation method of the pressurized fluidized incinerator of the present invention includes a pressurized fluidized incinerator having a fluidized bed, a supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator, and the pressurized fluidized A method for operating a pressurized fluidized incinerator comprising an air supply at the start of combustion in an incinerator and a blower for starting rotation speed control used for starting the supercharger,
Start the operation of the starter blower at the start of combustion to start the operation of the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and start based on the measured value of the combustion air flow rate at the compressor outlet An air blowing start stage that adjusts the rotational speed of the blower to reach the first predetermined flow rate setting value;
After the combustion air flow rate has reached the first predetermined flow rate setting value, the pressurized fluidized incinerator is heated and pressurized by introducing combustible waste and / or auxiliary fuel. The generated exhaust gas energy gives a driving force to the turbine rotation of the turbocharger, and further adjusts the rotation speed of the starter blower based on the measured value of the combustion air flow rate at the compressor outlet to the pressurized flow incinerator. A temperature raising / pressurizing step for controlling the flow rate of the combustion air to be introduced to a second predetermined flow rate setting value;
As a result of an increase in the amount of exhaust gas due to combustion in the pressurized fluidized incinerator, the amount of combustion air conveyed by the compressor in response to the driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. An air intake valve provided in an outside air supply passage that branches off from the air supply passage between the starter blower and the compressor and communicates directly with the outside air when the inlet air pressure of the compressor becomes equal to or less than a specified value. A self-sustained switching stage that opens according to the measured value of the inlet air pressure and sucks outside air, reduces the rotation speed of the starter blower, and stops the starter blower by reaching a specified speed;
A normal operation stage in which the supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate setting value is secured as the amount of combustion air introduced into the pressurized fluidized incinerator; , Are provided.

The operation method of the pressurized fluidized incinerator of the present invention includes a pressurized fluidized incinerator having a fluidized bed, a supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator, and the pressurized fluidized Pressurized flow incineration comprising an air supply at the start of combustion in an incinerator and an activation blower used to activate the supercharger, and an activation blower air valve for adjusting the amount of combustion air supplied from the activation blower A method of operating a furnace,
Start the operation of the starter blower at the start of combustion to start the operation of the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and start based on the measured value of the combustion air flow rate at the compressor outlet An air blowing start stage that adjusts the opening of the blower air valve to reach the first predetermined flow rate setting value;
After the combustion air flow rate reaches the first predetermined flow rate setting value, the pressurized fluidized incinerator is heated and pressurized by introducing combustible waste and / or auxiliary fuel, and the pressurized fluidized incinerator The driving force is applied to the turbine rotation of the turbocharger by the exhaust gas energy generated in the above, and the opening of the blower air valve for start-up is adjusted based on the measured value of the combustion air flow rate at the compressor outlet. A temperature raising / pressurizing stage for controlling the flow rate of the combustion air introduced into the incinerator to become a second predetermined flow rate setting value;
As a result of an increase in the amount of exhaust gas due to combustion in the pressurized fluidized incinerator, the amount of combustion air conveyed by the compressor in response to the driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. An air intake valve provided in an outside air supply passage that branches off from the air supply passage between the starter blower and the compressor and communicates directly with the outside air when the inlet air pressure of the compressor becomes equal to or less than a specified value. A self-sustained switching stage that opens according to a measured value of the inlet air pressure of the air and sucks outside air, and closes the start blower air valve and stops the start blower after the air suction valve holds a predetermined opening or more for a predetermined time When,
A normal operation stage in which the supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate setting value is secured as the amount of combustion air introduced into the pressurized fluidized incinerator; , Are provided.

The operation method of the pressurized fluidized incinerator of the present invention includes a pressurized fluidized incinerator having a fluidized bed, a supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator, and the pressurized fluidized Pressurized flow incineration comprising an air supply at the start of combustion in an incinerator and an activation blower used to activate the supercharger, and an activation blower air valve for adjusting the amount of combustion air supplied from the activation blower A method of operating a furnace,
Start the operation of the starter blower at the start of combustion to start the operation of the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and start based on the measured value of the combustion air flow rate at the compressor outlet An air blowing start stage that adjusts the opening of the blower air valve to reach the first predetermined flow rate setting value;
After the combustion air flow rate reaches the first predetermined flow rate setting value, the pressurized fluidized incinerator is heated and pressurized by introducing combustible waste and / or auxiliary fuel, and the pressurized fluidized incinerator The driving force is applied to the turbine rotation of the turbocharger by the exhaust gas energy generated in the above, and the opening of the blower air valve for start-up is adjusted based on the measured value of the combustion air flow rate at the compressor outlet. A temperature raising / pressurizing stage for controlling the flow rate of the combustion air introduced into the incinerator to become a second predetermined flow rate setting value;
As a result of an increase in the amount of exhaust gas due to combustion in the pressurized fluidized incinerator, the amount of combustion air conveyed by the compressor in response to the driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. An air intake valve provided in an outside air supply passage that branches off from the air supply passage between the starter blower and the compressor and communicates directly with the outside air when the inlet air pressure of the compressor becomes equal to or less than a specified value. The intake air pressure is opened in accordance with the measured value of the inlet air pressure, the outside air is sucked in, the rotation speed of the starter blower is decreased and the specified speed is reached, so that the starter blower air valve is closed and the starter blower is stopped. A self-sustaining switching stage to perform;
A normal operation stage in which the supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate setting value is secured as the amount of combustion air introduced into the pressurized fluidized incinerator; , Are provided.

  In the operation method of the pressurized fluidized incinerator of the present invention, the control signal for controlling the air suction valve outputs the current state of not opening or closing if the measured value of the inlet air pressure of the compressor is the specified value, If the measured value of the compressor inlet air pressure is negative than the specified value, an open signal is output. If the measured value of the compressor inlet air pressure is more positive than the specified value, a closed signal is output. preferable.

  In the operation method of the pressurized fluidized incinerator of the present invention, the control signal for controlling the air suction valve outputs an open signal if the measured value of the inlet air pressure of the compressor is negative than the specified value, When the measured value of the compressor inlet air pressure is more positive than the specified value, when outputting a closing signal, the signal is further controlled in proportion to the deviation of the measured value of the compressor inlet air pressure from the specified value. Is preferably output.

  In the operation method of the pressurized fluidized incinerator of the present invention, the flow rate of the combustion air is adjusted by adjusting the starter blower rotational speed or the opening degree of the starter blower air valve based on the measured value of the combustion air flow rate at the compressor outlet. In the normal operation stage, even if the supercharger is driven only with exhaust gas, the second flow rate is set as the combustion air amount introduced into the pressurized fluidized incinerator. It is preferable to switch the flow control when the starter blower is stopped so that the pressurized air valve that releases excess air when it occurs at the compressor outlet above the predetermined flow rate set value is controlled.

The pressurized fluidized incinerator facility of the present invention is a pressurized fluidized incinerator having a fluidized bed,
A supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator;
An air supply at the start of combustion in the pressurized fluidized incinerator and a blower for controlling the rotational speed used for starting the supercharger;
A flow meter for measuring the flow rate of combustion air supplied from the compressor of the supercharger to the pressurized fluidized incinerator;
A pressure gauge for measuring an inlet air pressure of the compressor of the supercharger;
An air suction valve provided in an outside air supply passage that branches off from an air supply passage from the starter blower to the pressure gauge and communicates directly with the outside air, and the starter blower rotation speed based on the measured value of the flowmeter A flow rate indicating controller for controlling
A control device having a pressure indicating controller for controlling the opening of the air suction valve based on the measured value of the pressure gauge;
When the control device shifts from the combustion start of the pressurized fluidized incinerator to normal operation,
At the start of combustion in the pressurized fluidized incinerator, the operation of the starter blower is started, the combustion air is pushed into the compressor of the supercharger, and the rotational speed of the starter blower is adjusted based on the measured value of the flow meter. The flow rate of the combustion air to the first predetermined flow rate setting value,
After that, by introducing combustible waste and / or auxiliary fuel, the pressurized fluidized incinerator is heated and pressurized while flowing in the fluidized bed, and the exhaust gas energy generated in the pressurized fluidized incinerator is used to rotate the turbine of the turbocharger. A driving force is applied, and the flow rate of the combustion air introduced into the pressurized flow incinerator is adjusted to a second predetermined flow rate setting value by adjusting the rotational speed of the starter blower based on the measured value of the flow meter. Control and
Thereafter, the amount of exhaust gas increases due to combustion in the pressurized fluidized incinerator, and the amount of combustion air conveyed by the compressor in response to driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. When the measured value of the pressure gauge falls below a specified value, the air suction valve is opened according to the measured value of the pressure gauge to suck in outside air, and the air suction valve is opened at a predetermined opening for a predetermined time. Later, the startup blower is stopped,
The supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate set value is controlled as the amount of combustion air introduced into the pressurized fluidized incinerator. It is composed of

The pressurized fluidized incinerator facility of the present invention is a pressurized fluidized incinerator having a fluidized bed,
A supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator;
An air supply at the start of combustion in the pressurized fluidized incinerator and a blower for controlling the rotational speed used for starting the supercharger;
A flow meter for measuring the flow rate of combustion air supplied from the compressor of the supercharger to the pressurized fluidized incinerator;
A pressure gauge for measuring an inlet air pressure of the compressor of the supercharger;
An air suction valve provided in an outside air supply passage that branches off from an air supply passage from the starter blower to the pressure gauge and communicates directly with the outside air, and the starter blower rotation speed based on the measured value of the flowmeter A flow rate indicating controller for controlling
A control device having a pressure indicating controller for controlling the opening of the air suction valve based on the measured value of the pressure gauge;
When the control device shifts from the combustion start of the pressurized fluidized incinerator to normal operation,
At the start of combustion in the pressurized fluidized incinerator, the operation of the starter blower is started, the combustion air is pushed into the compressor of the supercharger, and the rotational speed of the starter blower is adjusted based on the measured value of the flow meter. The flow rate of the combustion air to the first predetermined flow rate setting value,
After that, by introducing combustible waste and / or auxiliary fuel, the pressurized fluidized incinerator is heated and pressurized while flowing in the fluidized bed, and the exhaust gas energy generated in the pressurized fluidized incinerator is used to rotate the turbine of the turbocharger. A driving force is applied, and the flow rate of the combustion air introduced into the pressurized flow incinerator is adjusted to a second predetermined flow rate setting value by adjusting the rotational speed of the starter blower based on the measured value of the flow meter. Control and
Thereafter, the amount of exhaust gas increases due to combustion in the pressurized fluidized incinerator, and the amount of combustion air conveyed by the compressor in response to driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. When the measured value of the pressure gauge falls below a specified value, the air suction valve is opened according to the measured value of the pressure gauge to suck in the outside air, and the rotational speed of the starter blower is decreased to the specified rotational speed. The start blower is stopped by reaching
The supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate set value is controlled as the amount of combustion air introduced into the pressurized fluidized incinerator. It is composed of

The pressurized fluidized incinerator facility of the present invention is a pressurized fluidized incinerator having a fluidized bed,
A supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator;
An air supply at the start of combustion in the pressurized fluidized incinerator and a starter blower used for starting the supercharger;
A starter blower air valve for adjusting the amount of combustion air supplied from the starter blower;
A flow meter for measuring the flow rate of combustion air supplied from the compressor of the supercharger to the pressurized fluidized incinerator;
A pressure gauge for measuring an inlet air pressure of the compressor of the supercharger;
An air suction valve provided in an outside air supply passage that branches off from an air supply passage from the start blower to the pressure gauge and communicates directly with the outside air, and the start blower air valve based on the measured value of the flow meter A flow rate indicating controller for controlling
A control device having a pressure indicating controller for controlling the opening of the air suction valve based on the measured value of the pressure gauge;
When the control device shifts from the combustion start of the pressurized fluidized incinerator to normal operation,
Start the operation of the starter blower at the start of combustion in the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and set the opening of the starter blower air valve based on the measured value of the flow meter Adjust the flow rate of the combustion air to reach the first predetermined flow rate set value,
After that, by introducing combustible waste and / or auxiliary fuel, the pressurized fluidized incinerator is heated and pressurized while flowing in the fluidized bed, and the exhaust gas energy generated in the pressurized fluidized incinerator is used to rotate the turbine of the turbocharger. A driving force is applied, and the flow rate of the combustion air introduced into the pressurized flow incinerator is adjusted by adjusting the opening of the starter blower air valve based on the measured value of the flow meter, and a second predetermined flow rate is set. Control to value,
Thereafter, the amount of exhaust gas increases due to combustion in the pressurized fluidized incinerator, and the amount of combustion air conveyed by the compressor in response to driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. When the measured value of the pressure gauge falls below a specified value, the air suction valve is opened according to the measured value of the pressure gauge to suck in outside air, and the air suction valve is opened at a predetermined opening for a predetermined time. Later, the startup blower is stopped,
The supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate set value is controlled as the amount of combustion air introduced into the pressurized fluidized incinerator. It is composed of

The pressurized fluidized incinerator facility of the present invention is a pressurized fluidized incinerator having a fluidized bed,
A supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator;
An air supply at the start of combustion in the pressurized fluidized incinerator and a starter blower used for starting the supercharger;
A starter blower air valve for adjusting the amount of combustion air supplied from the starter blower;
A flow meter for measuring the flow rate of combustion air supplied from the compressor of the supercharger to the pressurized fluidized incinerator;
A pressure gauge for measuring an inlet air pressure of the compressor of the supercharger;
An air suction valve provided in an outside air supply passage that branches off from an air supply passage from the start blower to the pressure gauge and communicates directly with the outside air, and the start blower air valve based on the measured value of the flow meter A flow rate indicating controller for controlling
A control device having a pressure indicating controller for controlling the opening of the air suction valve based on the measured value of the pressure gauge;
When the control device shifts from the combustion start of the pressurized fluidized incinerator to normal operation,
Start the operation of the starter blower at the start of combustion in the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and set the opening of the starter blower air valve based on the measured value of the flow meter Adjust the flow rate of the combustion air to reach the first predetermined flow rate set value,
After that, by introducing combustible waste and / or auxiliary fuel, the pressurized fluidized incinerator is heated and pressurized while flowing in the fluidized bed, and the exhaust gas energy generated in the pressurized fluidized incinerator is used to rotate the turbine of the turbocharger. A driving force is applied, and the flow rate of the combustion air introduced into the pressurized flow incinerator is adjusted by adjusting the opening of the starter blower air valve based on the measured value of the flow meter, and a second predetermined flow rate is set. Control to value,
Thereafter, the amount of exhaust gas increases due to combustion in the pressurized fluidized incinerator, and the amount of combustion air conveyed by the compressor in response to driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. When the measured value of the pressure gauge falls below a specified value, the air suction valve is opened according to the measured value of the pressure gauge to suck in the outside air, and the opening degree of the start blower air valve is the specified minimum When the opening is reached, the starter blower is stopped,
The supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate set value is controlled as the amount of combustion air introduced into the pressurized fluidized incinerator. It is composed of

  In the pressurized flow incinerator facility of the present invention, the control signal for controlling the air suction valve output from the pressure indicating controller is closed when the measured value of the inlet air pressure of the compressor is the specified value. If the measured value of the inlet air pressure of the compressor is more negative than the specified value, an open signal is output. If the measured value of the inlet air pressure of the compressor is more positive than the specified value, It is preferable to output a closing signal.

  Further, in the pressurized flow incinerator facility of the present invention, the control signal for controlling the air suction valve output from the pressure indicating controller further includes a measured value of the inlet air pressure of the compressor from the specified value. It is preferable to output a signal so that the change rate of the valve opening degree is proportionally controlled by the deviation.

  Further, in the pressurized flow incinerator facility of the present invention, the flow rate of the combustion air is set to a predetermined flow rate by adjusting the starter blower rotation speed output from the flow rate indicating controller or the opening degree of the starter blower air valve. For the flow control signal to reach the value, change the setting of the flow indicator controller using the start blower stop signal and adjust the opening of the pressurized air valve that releases excess air generated at the compressor outlet It is preferable to switch the signal transmission path.

  According to the method of operating the pressurized fluidized incinerator and the pressurized fluidized incinerator facility of the present invention, the starter blower is controlled for rotation speed, or the starter blower air valve is installed for flow rate control, and for combustion. Adjust the rotation speed of the starter blower based on the air flow rate, or adjust the opening of the starter blower air valve by rotating the starter blower at a constant rotation, and adjust the air intake valve's opening based on the inlet air pressure of the compressor. Since the opening degree is adjusted, the process of the self-sustained switching stage can be automated, and the constant monitoring of the operator and the situation determination can be made unnecessary. In addition, since the setting of the self-sustained switching program is not required and fluctuations in the flow rate and pressure of the combustion air are appropriately suppressed, it is possible to achieve an excellent effect that adverse effects such as occurrence of surging can be prevented.

It is a general | schematic block diagram which expands and shows a part of 1st example of the pressurized flow incinerator equipment of this invention. It is a flow which shows the process of the 1st example of the operating method of the pressurized flow incinerator of this invention. It is a flow which shows the process which continues from the flow of FIG. In the present invention, it is a graph showing the rotation speed of the starter blower, the opening degree of the air intake valve, etc. in the air blowing start stage, the temperature rise / pressure increase stage, the self-sustaining switching stage, and the normal operation stage. It is a graph which shows the change rate of the valve opening degree of an air suction valve based on the deviation of the inlet air pressure of a compressor, and a regulation pressure in the self-supporting switching stage. It is a graph which shows the rotation speed of the blower for starting, the opening degree of an air suction valve, etc. when the inlet air pressure of a compressor becomes more than a regulation value at the self-supporting switching stage. It is a flow which shows the other process which continues from the flow of FIG. It is a schematic block diagram which expands and shows a part of 2nd example of the pressurized flow incinerator equipment of this invention. It is a flow which shows the process of the 2nd example of the operating method of the pressurized flow incinerator of this invention. It is a whole outline | summary block diagram which shows a pressurized flow incinerator equipment. It is a general | schematic block diagram which expands and shows a part of conventional pressurization fluidization incinerator equipment. It is the graph which set the opening degree of the combustion air valve, the opening degree of the air suction valve, and the opening degree of the pressure adjustment valve of the starter blower by the self-supporting switching program. It is a graph which shows the opening degree of the air valve for combustion, the opening degree of an air suction valve, etc. in a ventilation start stage, a temperature rising / pressure increase stage, a self-sustained switching stage, and a normal operation stage.

  Hereinafter, a first example of an embodiment of the present invention will be described with reference to FIGS. Moreover, in the figure, the part which attached | subjected the code | symbol same as FIG. 10, FIG. 11 represents the same thing.

  As shown in FIG. 10, the operation method of the pressurized fluidized incinerator and the pressurized fluidized incinerator equipment, which are the first example of the embodiment, are produced by the pressurized fluidized incinerator 1 and the exhaust gas generated in the pressurized fluidized incinerator 1. A turbocharger 2 that drives the turbine 2a and pumps combustion air by the compressor 2b, and an inverter-controlled starter blower 49 that controls the rotational speed of a fan that pushes the combustion air into the compressor 2b when the turbocharger 2 is started ( 1), an air preheater 4 that can exchange heat between the combustion air from the supercharger 2 and the exhaust gas of the pressurized fluidized incinerator 1, and a high-temperature dust collector that collects the exhaust gas from the air preheater 4. 5, a white smoke prevention air preheater 6 for preventing white smoke of exhaust gas flowing down from the turbine 2 a, a flue gas treatment tower 7 for treating the exhaust gas flowing down from the white smoke prevention air preheater 6, and white smoke prevention air preheating White smoke prevention air and flue gas treatment tower from vessel 6 And a chimney 8 for discharging the outside air exhaust from.

  The supercharger 2 is provided with a first air supply passage 10 for supplying combustion air from the compressor 2b via the air preheater 4, and the compressor 2b and the air preheat are supplied through the first air supply passage 10. A second air supply passage 11 is provided which branches from the container 4 and supplies air to the start burner 1a of the pressurized fluidized incinerator 1. An air supply passage 13 for supplying combustion air from the starter blower 49 is disposed on the compressor 2b side of the supercharger 2, and the turbine 2a of the supercharger 2 is provided in the air supply passage 13. Is connected to the outside air supply passage 14 for sucking combustion air from outside air. Here, in FIG. 1, symbols A, B, C, and D indicate that they are connected to symbols A, B, C, and D in FIG.

  As shown in FIG. 1, the starter blower 49 includes a driving means 49a such as a motor and an inverter control unit 49b so as to be able to adjust the rotation speed. An air suction valve 24 that can adjust the suction amount is provided. In addition, a flow meter 26 for measuring the flow rate of combustion air is provided at a location of the first air supply channel 10 from the compressor 2b of the supercharger 2 to the air preheater 4, and an air supply channel. 13, a pressure gauge 50 for measuring the inlet air pressure of the compressor 2b is provided at a location from the start blower 49 to the compressor 2b. Further, an air supply on / off valve 11a (see FIG. 10) for adjusting the flow rate of air is provided at a location in the second air supply passage 11 from the compressor 2b to the pressurized fluidized incinerator 1. Further, in the second air supply passage 11, the portion from the compressor 2 b to the air supply opening / closing valve 11 a is located upstream of the air supply opening / closing valve 11 a and is used for surplus combustion after the normal operation of the pressurized flow incinerator 1. A use supply channel 27 that can separately use air is connected, and the use supply channel 27 is provided with a pressurized air valve 28.

  The combustion air flow meter 26 is connected to a flow rate indicating controller (FIC) 52 via a flow rate signal line 51, and the flow rate indicating controller 52 includes a flow rate selector 53 and a pressurized air valve signal line 54. To the pressurized air valve 28, so that the opening degree of the pressurized air valve 28 can be controlled. The flow rate indicating controller 52 is connected to the inverter control unit 49b of the starter blower 49 via the flow rate selector 53 and the starter blower signal line 55 so that the rotational speed of the starter blower 49 can be controlled. Yes.

  The pressure gauge 50 for the inlet air pressure is connected to a pressure indicating controller (PIC) 57 via a pressure signal line 56, and the pressure indicating controller 57 is connected via a pressure side selector 58 and an air intake valve signal line 59. Are connected to the air suction valve 24 so that the opening degree of the air suction valve 24 can be controlled. The pressure indicating controller 57 is connected to the start switch 49c of the starter blower 49 via the opening calculator 60, the timer 61, and the starter blower signal line 62 so as to operate the starter switch 49c to the stop side. ing. Further, the stop signal obtained from the contact of the timer 61 is calculated according to the measured value of the flow meter after the setting value of the flow rate indicating controller 52 is changed by the flow rate selector 53 after the starter blower 49 stops. Thus, the signal line of the flow rate indicating controller 52 is switched to the pressurized air valve signal line 54 so that the flow rate of the pressurized air valve 28 is controlled. The pressure side selector 58 receives an activation signal from the automatic activation switch 63. Here, in FIG. 1, the symbol * 6 indicates that the signal lines are connected.

  The operation of the first embodiment of the present invention will be described below.

  When shifting from the first air blowing start stage to the normal operation stage, processing is performed according to the flow of FIG. 2 and FIG. 3, and as shown in FIG. 4, the air blowing start stage (steps S1 to S9), the temperature rise / pressure increase stage (step S10). ), Through the self-sustaining switching stage (switching stage to self-supporting) (steps S11 to S15), the process proceeds to the normal operation stage (step S16).

  In the air blowing start stage (steps S1 to S9), first, the automatic start switch 63 is turned on (switch ON), and it is determined whether or not the opening degree of the air suction valve 24 is fully closed via the pressure side selector 58 (step S1). If not fully closed (NO in step S1), the same process is repeated until the opening is fully closed. If fully closed (YES in step S1), the other start-up blower 49 start conditions The establishment is confirmed (step S2). Here, the activation conditions of the activation blower 49 are the stop of the pressurized fluidized incinerator 1 and the confirmation of fuel supply. If the activation condition cannot be confirmed (NO in step S2), the activation condition can be confirmed. The process is repeated until (YES in step S2).

  When it is confirmed that the start condition of the start blower 49 is satisfied (YES in Step S2), the start blower 49 is started to operate (Step S3), and the combustion air is pushed into the compressor 2b of the supercharger 2. Here, in FIG. 1, the signal line of the signal for starting the operation of the starter blower 49 is not described, but the operation is performed after the steps S1 and S2.

  Then, the flow rate of the combustion air is measured by the flow meter 26, the rotation of the starter blower 49 is calculated by the flow rate indicating controller 52 based on the measured value of the flow rate of the combustion air (step S4), and the calculation result is the flow rate. This is transmitted to the inverter controller 49b of the starter blower 49 via the side selector 53, and the rotational speed of the starter blower 49 is controlled (step S5). Subsequently, the pressure gauge 50 measures the inlet air pressure of the compressor 2b, the pressure indication controller 57 calculates the opening of the air suction valve 24 based on the measured value of the inlet air pressure (step S6), and the calculation result is the pressure. This is transmitted to the air suction valve 24 via the side selector 58, and control of the opening degree of the air suction valve 24 is started (step S7). Here, when the rotation of the starter blower 49 is calculated by the flow rate indicating controller 52 based on the measured value of the flow meter 26 (step S4), a deviation calculation between the measured value of the flow rate and the set value is performed, and the deviation is calculated. The rotational speed of the starter blower 49 is output so as to be zero. Further, when the opening degree of the air suction valve 24 is calculated by the pressure indicating controller 57 (step S6), as shown in FIG. 5, the valve is opened based on the deviation between the inlet air pressure of the compressor 2b and the set value (specified pressure). When the deviation is large, the valve opening speed is adjusted so that the valve opens quickly and when the deviation is small, the valve opens slowly. This adjustment may be performed by proportional control of the speed change and the deviation, or by stepwise step control. Further, when the rotational speed of the starter blower 49, the opening degree of the air suction valve 24, the flow rate (air amount) of combustion air, and the state of the inlet air pressure of the compressor 2b are shown, as shown in FIG. The rotational speed of the combustion air rises up to a certain time from the start of operation of the starter blower 49, and the flow rate (air amount) of the combustion air increases as the speed of the starter blower 49 increases, and the compressor 2b Similarly, the inlet air pressure increases as the rotational speed of the starter blower 49 increases. The opening of the air suction valve 24 is in a fully closed state until the inlet air pressure of the compressor 2b is equal to or lower than a specified value below atmospheric pressure.

  Subsequently, it is determined whether or not the flow rate of the combustion air reaches the first predetermined flow rate setting value (step S8), and when the flow rate does not reach the first predetermined flow rate setting value (NO in step S8). Repeats the same process until the first predetermined flow rate set value is reached, and when the flow rate reaches the first predetermined flow rate set value (YES in step S8), a timer (not shown) counts. (Step S9) After the elapse of a predetermined time, the process proceeds to a temperature increase / pressure increase stage (step S10).

  In the temperature raising / pressurizing stage (step S10), the starting burner 1a of the pressurized fluidized incinerator 1 is ignited, and one of the combustion air pushed into it by the starter blower 3 through the compressor 2b of the supercharger 2 By opening the air supply opening / closing valve 11a to the furnace in the vicinity of the starter burner 1a via the second air supply flow path 11, and the flow of the heat medium such as combustion and sand starts, and the pressurized flow The incinerator 1 also starts burning. Auxiliary fuel is injected into the starter burner 1a or an oil gun (not shown) and burned, and the combustion air has a flow rate that has reached the first predetermined flow rate setting value, and the heat medium flow in the fluidized bed is also flourishing. The pressurized fluidized incinerator 1 is heated and pressurized. As a result, high-temperature and high-pressure exhaust gas is gradually generated, and the high-pressure exhaust gas is conveyed through the discharge flow path 12, and the turbine 2 a of the supercharger 2 is driven by the energy of the exhaust gas. Gradually increases and the work applied to the turbine 2a increases to increase the turbine speed. Then, based on the measured value of the flow rate of the combustion air, the rotational speed of the starter blower 49 is adjusted to become the second predetermined flow rate setting value of the combustion air necessary for the latter stage of the temperature raising and boosting operation or the normal operation. Thus, the set value of the flow rate control system is changed, and control is performed so that the set value is obtained. The first predetermined flow rate setting value and the second predetermined flow rate setting value of the combustion air may be the same, or the second predetermined flow rate setting value may be large. Further, in the temperature raising / pressurizing stage, the second predetermined flow rate set value may be moved by an arithmetic expression such that the second predetermined flow rate set value is gradually increased to become the second predetermined flow rate set value in the final normal operation. . Here, the rotational speed of the starter blower 49 at the temperature rising / pressurizing stage, the opening degree of the air suction valve 24, the flow rate (air amount) of combustion air, and the state of the inlet air pressure of the compressor 2b are shown, for example, for combustion As shown in FIG. 4 in the case where the first predetermined flow rate setting value of air and the second predetermined flow rate setting value are substantially the same value, the flow rate (air amount) of the combustion air maintains a substantially constant value. Thus, the rotational speed of the starter blower 49 and the inlet air pressure of the compressor 2b are gradually decreased due to air suction accompanying the increase in the rotational speed of the turbine 2a.

  Next, the amount of exhaust gas increases due to combustion in the pressurized fluidized incinerator 1, and the amount of combustion air conveyed by the compressor 2b in response to driving of the turbine 2a by exhaust gas energy approaches the second predetermined flow rate setting value. As a result, when the inlet air pressure of the compressor 2b becomes equal to or less than a specified value equal to or lower than the atmospheric pressure, the process proceeds to the self-sustaining switching stage (steps S11 to S15). Here, the specified value is a value set below atmospheric pressure, and specifically, the measurement of the inlet air pressure of the compressor 2b from the outside air inlet portion (not shown) of the outside air supply passage 14 which is atmospheric pressure. It is a value set in consideration of the pipe pressure loss up to the point, the filter pressure loss, etc.

  In the self-sustaining switching stage (steps S11 to S15), a signal is continuously sent from the pressure indicating controller 57 to the air suction valve 24. However, when the signal on the closing side has been sent all the time, the inlet air of the compressor 2b Since the control signal for further opening the valve is sent to the air intake valve 24 via the pressure indicating controller 57 and the like from the time when the pressure becomes the specified value below the atmospheric pressure (step S11), the air intake The valve 24 is opened to suck air from outside air. Then, it is determined whether or not the opening degree of the air suction valve 24 has reached a predetermined opening degree (including the case of full opening) (step S12). If the opening degree is not a predetermined opening degree (NO in step S12), The same process is repeated until the predetermined opening degree is reached. When the opening degree reaches the predetermined opening degree (YES in step S12), the operation / stop determination of the starter blower 49 is started (step S13), The timer 61 counts (step S14), and after a predetermined time has elapsed, the starter blower 49 is stopped (step S15), and the process proceeds to the normal operation stage. Here, FIG. 4 shows the rotation speed of the starter blower 49, the opening degree of the air suction valve 24, the flow rate of combustion air (air amount), and the state of the inlet air pressure of the compressor 2b at the self-sustaining switching stage. As described above, the rotational speed of the starter blower 49 is the minimum rotational speed (specified rotational speed) set to protect the inverter control, the motor, or the like, or a rotational speed lower than a certain value in the vicinity thereof. As for the opening degree of the valve 24, the air suction valve 24 starts to open in response to the control signal from the time when the inlet air pressure of the compressor 2b becomes equal to or less than a specified value. Further, the flow rate (air amount) of the combustion air is a substantially constant value, and the inlet air pressure of the compressor 2b is maintained at a substantially constant value after being lower than a specified value.

Here, as another control method, the current state is maintained in the air intake valve 24 via the pressure indicating controller 57 and the like from the time (step S11) when the inlet air pressure of the compressor 2b becomes equal to or lower than the specified value below atmospheric pressure. Further, a control signal for opening the valve is sent to open the air suction valve 24 to suck in air from the outside air, and then the rotational speed of the starter blower 49 is gradually reduced by the output of the flow rate indicating controller 52. Thereby, it is determined whether or not the rotation speed of the activation blower 49 has reached a predetermined minimum rotation speed (specified rotation speed) (step S12 ′), and the rotation speed of the activation blower 49 is not the predetermined minimum rotation speed. In the case (NO in step S12 ′), the same process is repeated until the predetermined minimum number of revolutions is reached. When the number of revolutions of the starter blower 49 reaches the predetermined minimum number of revolutions (YES in step S12 ′). Then, the start / stop determination of the starter blower 49 is started (step S13 ′), the starter blower 49 is stopped (step S15 ′), and the process proceeds to the normal operation stage.

  In addition, when the inlet air pressure of the compressor 2b becomes equal to or lower than the specified value below the atmospheric pressure at the self-sustained switching stage and then becomes higher than the specified value again as shown in FIG. A control signal for automatically closing the valve is sent to the valve 24, and the air suction valve 24 is adjusted in the closing direction to restrict the introduction of outside air (range α in FIG. 6), and the pushing force of the starter blower 49 is increased. By increasing the combustion of the pressurized fluidized incinerator 1 and increasing the amount of exhaust gas generated, the compressor 2b driving force by the turbine 2a of the supercharger 2 is increased again to bring the compressor inlet air pressure below the specified value again. The process is returned to the first process in the self-sustaining switching stage (see reference numeral F1 in FIG. 7), and the same process is repeated from the time point when the inlet air pressure of the compressor 2b becomes equal to or lower than the specified value, and the starter blower 49 is stopped. -Up S11~S15), has been shifted to the normal operation stage.

  In the normal operation stage (step S16), the supercharger 2 is operated only with the exhaust gas of the pressurized fluidized incinerator 1, and the pressurized fluidized incinerator 1 is brought into a normal operating state. After the timer 61 counts, the start blower 49 is stopped, the contact signal of the timer 61 is given to the flow rate side selector 53, and the command to change the set value is given to the flow rate indicating controller 52. The control signal output from the controller 52 is switched to the control of the pressurized air valve 28, and the surplus amount of combustion air by the compressor 2b of the supercharger 2 is controlled and flowed to the use supply flow path 27 for effective use separately. The same applies to the case where the determination of the stop of the starter blower 49 (step S15 ′) is based on the rotational speed of the starter blower 49. Here, when the rotational speed of the starter blower 49, the opening degree of the air suction valve 24, the flow rate (air amount) of combustion air, and the state of the inlet air pressure of the compressor 2b in the normal operation stage are shown, for example, combustion air As shown in FIG. 4 when the first predetermined flow rate setting value and the second predetermined flow rate setting value are substantially the same value, the rotation speed of the starter blower 49 is reduced by the stoppage of the starter blower 49. The value is zero, the opening of the air intake valve 24 is fully open, the flow rate of combustion air (the amount of air) is a substantially constant value, and the inlet air pressure of the compressor 2b is below a specified value. Is maintained.

  Further, at the normal stage, when the inlet air pressure of the compressor 2b becomes equal to or higher than the specified value below the atmospheric pressure as shown in FIG. 7 due to changes in the moisture content of dehydrated sludge, the input amount, and the heat generation amount (YES in step S17). ) Restarts the operation of the starter blower 49 (step S18) and sends a control signal for automatically closing the valve from the pressure indicating controller 57 to the air suction valve 24, and adjusts the air suction valve 24 in the closing direction. Thus, the introduction of outside air is restricted, the blower power of the starter blower 49 is generated, the combustion of the pressurized fluidized incinerator 1 is actively promoted, and the amount of exhaust gas generated is increased, so that the compressor 2b by the turbine 2a of the supercharger 2 again. The driving force is increased, and the process is returned to the first process in the self-sustaining switching stage (reference F1 in FIG. 7), and the same process is repeated from the time when the inlet air pressure of the compressor 2b again falls below the specified value. The use blower 49 is stopped (step SS11~S15), it has been shifted to the normal operation step.

  Thus, according to the first example of the embodiment as described above, the starter blower 49 is controlled by the inverter, and the rotation speed of the starter blower 49 is adjusted based on the flow rate of the combustion air, so that the compressor 2b Since the opening degree of the air suction valve 24 is adjusted based on the inlet air pressure, it is possible to automate the process of the self-sustaining switching stage and eliminate the need for constant monitoring and situation determination by the operator. Further, the opening degree of the combustion air valve 25 can be automatically processed by adjusting the opening degree of the air suction valve 24 and the rotation speed of the starter blower 49 so as to automatically process the air blowing start stage, the temperature rising / pressurizing stage and the self-sustaining switching stage. Adjustment (see FIG. 11) and setting of the self-supporting switching program 37 (see FIG. 11) are not required, and fluctuations in the flow rate and pressure of combustion air are appropriately suppressed, thereby preventing adverse effects such as occurrence of surging. Can do. Furthermore, since the starter blower 49 is stopped based on the fact that the suction air pressure of the compressor 2b has become a negative pressure equal to or lower than a specified value due to the suction of the compressor 2b of the supercharger 2, the operation from the self-sustained switching stage to the normal operation is stopped. Migration can be performed easily and suitably.

  In the first example of the embodiment, when the inlet air pressure of the compressor 2b becomes equal to or higher than a specified value below the atmospheric pressure in the self-sustaining switching stage, the valve is automatically closed from the pressure indicating controller 57 to the air suction valve 24. Control signal is sent, the air suction valve 24 is adjusted in the closing direction, the introduction of outside air is restricted, the pushing force of the starter blower 49 is increased, the combustion of the pressurized fluidized incinerator 1 is increased, and the amount of exhaust gas generated By increasing the compressor 2b driving force by the turbine 2a of the turbocharger 2 again to reduce the inlet air pressure of the compressor 2b to a specified value or less, and returning to the first process in the self-sustaining switching stage, It is possible to appropriately suppress fluctuations in flow rate and pressure, and to automate the process of the self-sustained switching stage, thereby making it unnecessary to constantly monitor and judge the situation of the operator.

  In the first example of the embodiment, when the inlet air pressure of the compressor 2b becomes equal to or higher than a specified value equal to or lower than the atmospheric pressure in the normal operation stage, the operation of the starter blower 49 is resumed. A control signal for automatically closing the valve is sent to the air suction valve 24, and the air suction valve 24 is adjusted in the closing direction to restrict the introduction of outside air (range α in FIG. 6). By generating and increasing the combustion of the pressurized fluidized incinerator 1 to increase the amount of exhaust gas generated, the compressor 2b driving force by the turbine 2a of the supercharger 2 is increased again, and the inlet air pressure of the compressor 2b is set again to the specified value. When returning to the first treatment in the self-sustained switching stage below, even if the moisture content of dehydrated sludge, the input amount, and the calorific value are changed, the pressure fluctuation of the inlet air pressure of the compressor 2b may occur in the normal operation stage. Since the start-up blower 49 may adjust the inlet air pressure and flow rate of the combustion air compressor 2b with, it is possible to dispense with constant monitoring and status judgment of the operator.

  In the first example of the embodiment, in the self-sustaining switching stage, after the air suction valve 24 is fully opened, when the start-up blower 49 is stopped after counting a certain time, the inlet air pressure of the compressor 2b and the combustion air Therefore, it is possible to appropriately shift from the self-sustained switching stage to the normal operation stage, thereby eliminating the need for constant monitoring and situation determination by the operator. This is a case where, in the self-sustaining switching stage, after the air suction valve 24 is fully opened, the number of rotations of the starter blower 49 is monitored to be equal to or less than a predetermined minimum number of rotations (specified number of rotations) and the starter blower 49 is stopped. Is the same.

  Hereinafter, a second example of the embodiment of the present invention will be described with reference to FIGS. Moreover, in the figure, the part which attached | subjected the code | symbol same as FIGS. 1-7 represents the same thing.

  The operation method of the pressurized fluidized incinerator and the pressurized fluidized incinerator equipment, which are the second example of the embodiment, are changed from the driving blower of the first example to the constant speed rotary type and the starter blower air valve 49d is added. In addition, a part of the process of shifting from the air blowing start stage to the normal operation stage is changed.

  The second example has the same configuration as the first example, and the air supply flow path 13 for supplying combustion air from the starter blower 49 is disposed on the compressor 2b side of the supercharger 2, An activation blower air valve 49 d for adjusting the amount of combustion air supplied from the activation blower 49 is disposed in the air supply flow path 13. The air supply passage 13 may be extended not only to the discharge side of the starter blower 49 but also to the suction side of the starter blower 49, and the starter blower air valve 49d is used for starting as shown in FIG. The air supply channel 13 may be on the discharge side or the suction side of the blower 49. In addition, an external air side air supply flow path 14 that sucks combustion air from the external air as the turbine 2a of the supercharger 2 is driven is connected to the air supply flow path 13 downstream of the starter blower air valve 49d. ing. Here, the starter blower 49 is configured to rotate at a constant speed including drive means 49a such as a motor, but may be one that can be controlled by an inverter.

  On the other hand, the flow rate indicating controller 52 is connected to the pressurized air valve 28 via the flow rate selector 53 and the pressurized air valve signal line 54 so that the opening degree of the pressurized air valve 28 can be controlled. The flow rate indicating controller 52 is connected to the starter blower air valve 49d via the flow rate side selector 53 and the starter blower air valve signal line 55a so that the opening degree of the starter blower air valve 49d can be controlled. ing.

  The operation of the second embodiment of the present invention will be described below.

  When shifting from the initial air blowing start stage to the normal operation stage, processing is performed according to the flow of FIGS.

  In the air blowing start stage (steps S1 to S9), the operation of the starter blower 49 is started as in the first example (steps S1 to S3).

  Then, the flow rate of the combustion air is measured by the flow meter 26, and the opening degree of the starter blower air valve 49d is calculated by the flow rate indicating controller 52 based on the measured value of the flow rate of the combustion air (step S4a). The result is transmitted to the activation blower air valve 49d via the flow rate selector 53, and the opening degree of the activation blower air valve 49d is controlled (step S5a). Here, in the case where the starter blower 49 is configured to be controlled by an inverter, the rotational speed control of the starter blower 49 may be used simultaneously with the opening degree control of the starter blower air valve 49d.

  Subsequently, in the same manner as in the first example, the process is performed until the temperature rising / pressurizing stage (steps S6 to S10) is started. Fuel is injected and burned, and the combustion air has a flow rate that reaches a predetermined value, and the flow of the heat medium in the fluidized bed becomes active, and the pressurized fluidized incinerator 1 is heated and pressurized. As a result, high-temperature and high-pressure exhaust gas is gradually generated, and the high-pressure exhaust gas is conveyed through the discharge flow path 12, and the turbine 2 a of the supercharger 2 is driven by the energy of the exhaust gas. Gradually increases and the work applied to the turbine 2a increases to increase the turbine speed. Then, based on the measured value of the flow rate of the combustion air, the opening degree of the starter blower air valve 49d is adjusted to maintain the flow rate of the combustion air. Here, in the case where the starter blower 49 is configured to be controlled by an inverter, the rotational speed control of the starter blower 49 may be used simultaneously with the opening degree control of the starter blower air valve 49d.

  Next, as the turbine 2a is driven, the inlet air pressure of the compressor 2b is increased by the combustion of the pressurized fluidized incinerator 1 as in the first example, and according to the driving of the turbine 2a by the exhaust gas energy. As a result of the amount of combustion air conveyed by the compressor 2b approaching a predetermined set value, when the inlet air pressure of the compressor 2b becomes equal to or less than a specified value equal to or lower than the atmospheric pressure, the self-sustaining switching stage self-sustaining switching stage (steps S11 to S15, (See FIG. 3). In the self-sustaining switching stage (steps S11 to S15), a signal is continuously sent from the pressure indicating controller 57 to the air suction valve 24. However, when the signal on the closing side has been sent all the time, the inlet air of the compressor 2b Since the control signal for further opening the valve is sent to the air intake valve 24 via the pressure indicating controller 57 and the like from the time when the pressure becomes the specified value below the atmospheric pressure (step S11), the air intake The valve 24 is opened to suck air from outside air. Then, it is determined whether or not the opening of the air intake valve 24 is fully opened (step S12). If the opening is not fully opened (NO in step S12), the same processing is repeated until the opening is fully opened. Is reached (YES in step S12), start / stop judgment of the start blower 49 and / or opening / close judgment of the start blower air valve 49d is started (step S13), and the timer 61 counts. Then, after a predetermined time has elapsed, the starter blower 49 is stopped or / and the starter blower air valve 49d is closed (step S15), and the process proceeds to the normal operation stage.

  In the normal operation stage (step S16), the supercharger 2 is operated only with the exhaust gas of the pressurized fluidized incinerator 1, and the pressurized fluidized incinerator 1 is brought into a normal operation state.

  Further, at the self-sustaining switching stage, as shown in FIG. 6, after the inlet air pressure of the compressor 2b becomes lower than the specified value below the atmospheric pressure and then becomes higher than the specified value again, or at the normal stage, water content such as dewatered sludge is contained. When the inlet air pressure of the compressor 2b becomes equal to or higher than a specified value as shown in FIG. 7 due to changes in the rate, input amount, and heat generation amount, the same processing as in the first example is performed.

  Thus, according to the second example of the embodiment as described above, it is possible to obtain the same effect as the first example.

  Note that the method of operating the pressurized fluidized incinerator and the pressurized fluidized incinerator equipment of the present invention are not limited to the illustrated examples described above. For example, the rotational speed control of the starter blower is not limited to the inverter control. Any device that controls the rotational speed, such as pole number change control or thyristor control, may be used, and other configurations are the same, and various changes can be made without departing from the scope of the present invention. is there.

DESCRIPTION OF SYMBOLS 1 Pressurization flow incinerator 2 Supercharger 2a Turbine 2b Compressor 14 Outside air supply passage 49 Start blower 49d Start blower air valve 50 Pressure gauge 52 Flow indication controller 57 Pressure indication controller 61 Timer

Claims (14)

A pressurized fluidized incinerator having a fluidized bed, a supercharger that pumps combustion air using exhaust gas generated in the pressurized fluidized incinerator, air supply at the start of combustion in the pressurized fluidized incinerator, and the supercharging An operation method of a pressurized fluidized incinerator including a rotation control start blower used for starting a machine,
Start the operation of the starter blower at the start of combustion to start the operation of the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and start based on the measured value of the combustion air flow rate at the compressor outlet An air blowing start stage that adjusts the rotational speed of the blower to reach the first predetermined flow rate setting value;
After the combustion air flow rate has reached the first predetermined flow rate setting value, the pressurized fluidized incinerator is heated and pressurized by introducing combustible waste and / or auxiliary fuel. The generated exhaust gas energy gives a driving force to the turbine rotation of the turbocharger, and further adjusts the rotation speed of the starter blower based on the measured value of the combustion air flow rate at the compressor outlet to the pressurized flow incinerator. A temperature raising / pressurizing step for controlling the flow rate of the combustion air to be introduced to a second predetermined flow rate setting value;
As a result of an increase in the amount of exhaust gas due to combustion in the pressurized fluidized incinerator, the amount of combustion air conveyed by the compressor in response to the driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. An air intake valve provided in an outside air supply passage that branches off from the air supply passage between the starter blower and the compressor and communicates directly with the outside air when the inlet air pressure of the compressor becomes equal to or less than a specified value. A self-sustained switching stage that opens according to the measured value of the inlet air pressure and sucks outside air, and stops the starter blower after the air suction valve holds a predetermined opening or more for a predetermined time;
A normal operation stage in which the supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate setting value is secured as the amount of combustion air introduced into the pressurized fluidized incinerator; A method for operating a pressurized fluidized incinerator, comprising: A pressurized fluidized incinerator having a fluidized bed, a supercharger that pumps combustion air using exhaust gas generated in the pressurized fluidized incinerator, air supply at the start of combustion in the pressurized fluidized incinerator, and the supercharging An operation method of a pressurized fluidized incinerator including a rotation control start blower used for starting a machine,
Start the operation of the starter blower at the start of combustion to start the operation of the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and start based on the measured value of the combustion air flow rate at the compressor outlet An air blowing start stage that adjusts the rotational speed of the blower to reach the first predetermined flow rate setting value;
After the combustion air flow rate has reached the first predetermined flow rate setting value, the pressurized fluidized incinerator is heated and pressurized by introducing combustible waste and / or auxiliary fuel. The generated exhaust gas energy gives a driving force to the turbine rotation of the turbocharger, and further adjusts the rotation speed of the starter blower based on the measured value of the combustion air flow rate at the compressor outlet to the pressurized flow incinerator. A temperature raising / pressurizing step for controlling the flow rate of the combustion air to be introduced to a second predetermined flow rate setting value;
As a result of an increase in the amount of exhaust gas due to combustion in the pressurized fluidized incinerator, the amount of combustion air conveyed by the compressor in response to the driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. An air intake valve provided in an outside air supply passage that branches off from the air supply passage between the starter blower and the compressor and communicates directly with the outside air when the inlet air pressure of the compressor becomes equal to or less than a specified value. A self-sustained switching stage that opens according to the measured value of the inlet air pressure and sucks outside air, reduces the rotation speed of the starter blower, and stops the starter blower by reaching a specified speed;
A normal operation stage in which the supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate setting value is secured as the amount of combustion air introduced into the pressurized fluidized incinerator; A method for operating a pressurized fluidized incinerator, comprising: A pressurized fluidized incinerator having a fluidized bed, a supercharger that pumps combustion air using exhaust gas generated in the pressurized fluidized incinerator, air supply at the start of combustion in the pressurized fluidized incinerator, and the supercharging An operation method of a pressurized flow incinerator comprising a starter blower used for starting a machine and a starter blower air valve for adjusting a supply amount of combustion air from the starter blower,
Start the operation of the starter blower at the start of combustion to start the operation of the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and start based on the measured value of the combustion air flow rate at the compressor outlet An air blowing start stage that adjusts the opening of the blower air valve to reach the first predetermined flow rate setting value;
After the combustion air flow rate reaches the first predetermined flow rate setting value, the pressurized fluidized incinerator is heated and pressurized by introducing combustible waste and / or auxiliary fuel, and the pressurized fluidized incinerator The driving force is applied to the turbine rotation of the turbocharger by the exhaust gas energy generated in the above, and the opening of the blower air valve for start-up is adjusted based on the measured value of the combustion air flow rate at the compressor outlet. A temperature raising / pressurizing stage for controlling the flow rate of the combustion air introduced into the incinerator to become a second predetermined flow rate setting value;
As a result of an increase in the amount of exhaust gas due to combustion in the pressurized fluidized incinerator, the amount of combustion air conveyed by the compressor in response to the driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. An air intake valve provided in an outside air supply passage that branches off from the air supply passage between the starter blower and the compressor and communicates directly with the outside air when the inlet air pressure of the compressor becomes equal to or less than a specified value. A self-sustained switching stage that opens according to a measured value of the inlet air pressure of the air and sucks outside air, and closes the start blower air valve and stops the start blower after the air suction valve holds a predetermined opening or more for a predetermined time When,
A normal operation stage in which the supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate setting value is secured as the amount of combustion air introduced into the pressurized fluidized incinerator; A method for operating a pressurized fluidized incinerator, comprising: A pressurized fluidized incinerator having a fluidized bed, a supercharger that pumps combustion air using exhaust gas generated in the pressurized fluidized incinerator, air supply at the start of combustion in the pressurized fluidized incinerator, and the supercharging An operation method of a pressurized flow incinerator comprising a starter blower used for starting a machine and a starter blower air valve for adjusting a supply amount of combustion air from the starter blower,
Start the operation of the starter blower at the start of combustion to start the operation of the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and start based on the measured value of the combustion air flow rate at the compressor outlet An air blowing start stage that adjusts the opening of the blower air valve to reach the first predetermined flow rate setting value;
After the combustion air flow rate reaches the first predetermined flow rate setting value, the pressurized fluidized incinerator is heated and pressurized by introducing combustible waste and / or auxiliary fuel, and the pressurized fluidized incinerator The driving force is applied to the turbine rotation of the turbocharger by the exhaust gas energy generated in the above, and the opening of the blower air valve for start-up is adjusted based on the measured value of the combustion air flow rate at the compressor outlet. A temperature raising / pressurizing stage for controlling the flow rate of the combustion air introduced into the incinerator to become a second predetermined flow rate setting value;
As a result of an increase in the amount of exhaust gas due to combustion in the pressurized fluidized incinerator, the amount of combustion air conveyed by the compressor in response to the driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. An air intake valve provided in an outside air supply passage that branches off from the air supply passage between the starter blower and the compressor and communicates directly with the outside air when the inlet air pressure of the compressor becomes equal to or less than a specified value. The intake air pressure is opened in accordance with the measured value of the inlet air pressure, the outside air is sucked in, the rotation speed of the starter blower is decreased and the specified speed is reached, so that the starter blower air valve is closed and the starter blower is stopped. A self-sustaining switching stage to perform;
A normal operation stage in which the supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate setting value is secured as the amount of combustion air introduced into the pressurized fluidized incinerator; A method for operating a pressurized fluidized incinerator, comprising:   The control signal for controlling the air suction valve outputs the current state of not opening or closing if the measured value of the inlet air pressure of the compressor is the specified value, and the measured value of the inlet air pressure of the compressor is lower than the specified value. 5. An open signal is output if the pressure is negative, and a close signal is output if the measured value of the inlet air pressure of the compressor is more positive than the specified value. Operating method of pressurized fluidized incinerator.   The control signal for controlling the air suction valve outputs an open signal if the measured value of the inlet air pressure of the compressor is negative than the specified value, and the measured value of the inlet air pressure of the compressor is lower than the specified value. 6. The signal according to claim 5, wherein when a positive signal is output, a signal is output so that proportional control is performed according to a deviation of the measured value of the inlet air pressure of the compressor from the specified value. Operating method of pressurized fluidized incinerator.   For a flow rate control system that adjusts the starter blower speed or the opening of the starter blower air valve based on the measured value of the combustion air flow rate at the compressor outlet to bring the flow rate of the combustion air to a predetermined flow rate setting value. In the operation stage, even when the supercharger is driven only by exhaust gas, the amount of combustion air introduced into the pressurized flow incinerator is generated at the compressor outlet above the second predetermined flow rate set value. The method for operating a pressurized flow incinerator according to any one of claims 1 to 6, wherein the flow rate control is switched when the starter blower is stopped so as to control the flow rate of a pressurized air valve that allows excess air to escape. A pressurized fluidized incinerator having a fluidized bed;
A supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator;
An air supply at the start of combustion in the pressurized fluidized incinerator and a blower for controlling the rotational speed used for starting the supercharger;
A flow meter for measuring the flow rate of combustion air supplied from the compressor of the supercharger to the pressurized fluidized incinerator;
A pressure gauge for measuring an inlet air pressure of the compressor of the supercharger;
An air suction valve provided in an outside air supply passage that branches off from an air supply passage from the starter blower to the pressure gauge and communicates directly with the outside air, and the starter blower rotation speed based on the measured value of the flowmeter A flow rate indicating controller for controlling
A control device having a pressure indicating controller for controlling the opening of the air suction valve based on the measured value of the pressure gauge;
When the control device shifts from the combustion start of the pressurized fluidized incinerator to normal operation,
At the start of combustion in the pressurized fluidized incinerator, the operation of the starter blower is started, the combustion air is pushed into the compressor of the supercharger, and the rotational speed of the starter blower is adjusted based on the measured value of the flow meter. The flow rate of the combustion air to the first predetermined flow rate setting value,
After that, by introducing combustible waste and / or auxiliary fuel, the pressurized fluidized incinerator is heated and pressurized while flowing in the fluidized bed, and the exhaust gas energy generated in the pressurized fluidized incinerator is used to rotate the turbine of the turbocharger. A driving force is applied, and the flow rate of the combustion air introduced into the pressurized flow incinerator is adjusted to a second predetermined flow rate setting value by adjusting the rotational speed of the starter blower based on the measured value of the flow meter. Control and
Thereafter, the amount of exhaust gas increases due to combustion in the pressurized fluidized incinerator, and the amount of combustion air conveyed by the compressor in response to driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. When the measured value of the pressure gauge falls below a specified value, the air suction valve is opened according to the measured value of the pressure gauge to suck in outside air, and the air suction valve is opened at a predetermined opening for a predetermined time. Later, the startup blower is stopped,
The supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate set value is controlled as the amount of combustion air introduced into the pressurized fluidized incinerator. A pressurized fluidized incinerator facility characterized by comprising A pressurized fluidized incinerator having a fluidized bed;
A supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator;
An air supply at the start of combustion in the pressurized fluidized incinerator and a blower for controlling the rotational speed used for starting the supercharger;
A flow meter for measuring the flow rate of combustion air supplied from the compressor of the supercharger to the pressurized fluidized incinerator;
A pressure gauge for measuring an inlet air pressure of the compressor of the supercharger;
An air suction valve provided in an outside air supply passage that branches off from an air supply passage from the starter blower to the pressure gauge and communicates directly with the outside air, and the starter blower rotation speed based on the measured value of the flowmeter A flow rate indicating controller for controlling
A control device having a pressure indicating controller for controlling the opening of the air suction valve based on the measured value of the pressure gauge;
When the control device shifts from the combustion start of the pressurized fluidized incinerator to normal operation,
At the start of combustion in the pressurized fluidized incinerator, the operation of the starter blower is started, the combustion air is pushed into the compressor of the supercharger, and the rotational speed of the starter blower is adjusted based on the measured value of the flow meter. The flow rate of the combustion air to the first predetermined flow rate setting value,
After that, by introducing combustible waste and / or auxiliary fuel, the pressurized fluidized incinerator is heated and pressurized while flowing in the fluidized bed, and the exhaust gas energy generated in the pressurized fluidized incinerator is used to rotate the turbine of the turbocharger. A driving force is applied, and the flow rate of the combustion air introduced into the pressurized flow incinerator is adjusted to a second predetermined flow rate setting value by adjusting the rotational speed of the starter blower based on the measured value of the flow meter. Control and
Thereafter, the amount of exhaust gas increases due to combustion in the pressurized fluidized incinerator, and the amount of combustion air conveyed by the compressor in response to driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. When the measured value of the pressure gauge falls below a specified value, the air suction valve is opened according to the measured value of the pressure gauge to suck in the outside air, and the rotational speed of the starter blower is decreased to the specified rotational speed. The start blower is stopped by reaching
The supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate set value is controlled as the amount of combustion air introduced into the pressurized fluidized incinerator. A pressurized fluidized incinerator facility characterized by comprising A pressurized fluidized incinerator having a fluidized bed;
A supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator;
An air supply at the start of combustion in the pressurized fluidized incinerator and a starter blower used for starting the supercharger;
A starter blower air valve for adjusting the amount of combustion air supplied from the starter blower;
A flow meter for measuring the flow rate of combustion air supplied from the compressor of the supercharger to the pressurized fluidized incinerator;
A pressure gauge for measuring an inlet air pressure of the compressor of the supercharger;
An air suction valve provided in an outside air supply passage that branches off from an air supply passage from the start blower to the pressure gauge and communicates directly with the outside air, and the start blower air valve based on the measured value of the flow meter A flow rate indicating controller for controlling
A control device having a pressure indicating controller for controlling the opening of the air suction valve based on the measured value of the pressure gauge;
When the control device shifts from the combustion start of the pressurized fluidized incinerator to normal operation,
Start the operation of the starter blower at the start of combustion in the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and set the opening of the starter blower air valve based on the measured value of the flow meter Adjust the flow rate of the combustion air to reach the first predetermined flow rate set value,
After that, by introducing combustible waste and / or auxiliary fuel, the pressurized fluidized incinerator is heated and pressurized while flowing in the fluidized bed, and the exhaust gas energy generated in the pressurized fluidized incinerator is used to rotate the turbine of the turbocharger. A driving force is applied, and the flow rate of the combustion air introduced into the pressurized flow incinerator is adjusted by adjusting the opening of the starter blower air valve based on the measured value of the flow meter, and a second predetermined flow rate is set. Control to value,
Thereafter, the amount of exhaust gas increases due to combustion in the pressurized fluidized incinerator, and the amount of combustion air conveyed by the compressor in response to driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. When the measured value of the pressure gauge falls below a specified value, the air suction valve is opened according to the measured value of the pressure gauge to suck in outside air, and the air suction valve is opened at a predetermined opening for a predetermined time. Later, the startup blower is stopped,
The supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate set value is controlled as the amount of combustion air introduced into the pressurized fluidized incinerator. A pressurized fluidized incinerator facility characterized by comprising A pressurized fluidized incinerator having a fluidized bed;
A supercharger that pumps combustion air by exhaust gas generated in the pressurized fluidized incinerator;
An air supply at the start of combustion in the pressurized fluidized incinerator and a starter blower used for starting the supercharger;
A starter blower air valve for adjusting the amount of combustion air supplied from the starter blower;
A flow meter for measuring the flow rate of combustion air supplied from the compressor of the supercharger to the pressurized fluidized incinerator;
A pressure gauge for measuring an inlet air pressure of the compressor of the supercharger;
An air suction valve provided in an outside air supply passage that branches off from an air supply passage from the start blower to the pressure gauge and communicates directly with the outside air, and the start blower air valve based on the measured value of the flow meter A flow rate indicating controller for controlling
A control device having a pressure indicating controller for controlling the opening of the air suction valve based on the measured value of the pressure gauge;
When the control device shifts from the combustion start of the pressurized fluidized incinerator to normal operation,
Start the operation of the starter blower at the start of combustion in the pressurized fluidized incinerator, push the combustion air into the compressor of the supercharger, and set the opening of the starter blower air valve based on the measured value of the flow meter Adjust the flow rate of the combustion air to reach the first predetermined flow rate set value,
After that, by introducing combustible waste and / or auxiliary fuel, the pressurized fluidized incinerator is heated and pressurized while flowing in the fluidized bed, and the exhaust gas energy generated in the pressurized fluidized incinerator is used to rotate the turbine of the turbocharger. A driving force is applied, and the flow rate of the combustion air introduced into the pressurized flow incinerator is adjusted by adjusting the opening of the starter blower air valve based on the measured value of the flow meter, and a second predetermined flow rate is set. Control to value,
Thereafter, the amount of exhaust gas increases due to combustion in the pressurized fluidized incinerator, and the amount of combustion air conveyed by the compressor in response to driving of the turbine by exhaust gas energy approaches the second predetermined flow rate setting value. When the measured value of the pressure gauge falls below a specified value, the air suction valve is opened according to the measured value of the pressure gauge to suck in the outside air, and the opening degree of the start blower air valve is the specified minimum When the opening is reached, the starter blower is stopped,
The supercharger is driven only with exhaust gas after the start-up blower is stopped, and the second predetermined flow rate set value is controlled as the amount of combustion air introduced into the pressurized fluidized incinerator. A pressurized fluidized incinerator facility characterized by comprising   The control signal for controlling the air suction valve output from the pressure indicating controller outputs the current maintenance that is not opened or closed if the measured value of the inlet air pressure of the compressor is the specified value, and the inlet air of the compressor An open signal is output if the measured pressure value is more negative than the specified value, and a closed signal is output if the measured inlet air pressure of the compressor is more positive than the specified value. The pressurized fluidized incinerator facility according to any one of claims 8 to 11.   The control signal for controlling the air suction valve output from the pressure indicating controller further controls the rate of change of the valve opening in proportion to the deviation of the measured value of the inlet air pressure of the compressor from the specified value. The pressurized fluidized incinerator facility according to claim 12, wherein the apparatus is configured to output a signal.   The starter blower is stopped for a flow rate control signal for adjusting the starter blower rotation speed or the starter blower air valve opening degree output from the flow rate indicating controller to reach the predetermined flow rate setting value. The signal transmission path is switched so as to change the setting of the flow rate indicating controller using a signal and adjust the opening of a pressurized air valve for releasing excess air generated at the compressor outlet. The pressurized fluidized incinerator facility according to any one of 8 to 13.

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