JP7373427B2 - Waste treatment equipment and how to start up waste treatment equipment - Google Patents

Description

The present invention relates to waste treatment equipment and a method for starting up waste treatment equipment.

Conventionally, waste treatment equipment for treating waste such as sewage sludge has been known. For example, Patent Document 1 includes an incinerator that burns waste, a supercharger including a compressor and a turbine, an air preheater, a combustion air supply channel, a bypass channel, and an auxiliary blower. Waste treatment equipment is disclosed.

A compressor compresses air sucked in from outside. The turbine is connected to and drives the compressor. The air preheater heats the air by exchanging heat between the air discharged from the compressor and the exhaust gas discharged from the incinerator. The combustion air supply flow path connects the compressor, air preheater, turbine, and incinerator in this order. In other words, the combustion air supply channel is a channel that guides air discharged from the compressor to the incinerator as combustion air necessary for incinerating waste in the incinerator. The bypass flow path is connected to the combustion air supply flow path so as to bypass the turbine. The auxiliary blower supplies air to a portion of the combustion air supply flow path between the compressor and the air preheater.

In the waste treatment equipment described in Patent Document 1, at startup (startup), air is supplied to the air preheater by the auxiliary blower, and the air discharged from the air preheater is passed through the bypass flow path (through the turbine). (bypass) to the incinerator. The reason for this is that when the waste treatment facility is started up, the temperature of the exhaust gas flowing into the air preheater is not very high, so it is difficult to stably drive the turbine with the air discharged from the air preheater. be. Then, when the temperature of the air discharged from the air preheater rises to a certain degree, it becomes possible to drive the turbine with that air, so the bypass flow path is shut off and the air discharged from the air preheater is supplied to the turbine. be done. This drives the compressor. Thereafter, when the temperature of the air discharged from the air preheater further increases and the supercharger becomes capable of independent operation, the auxiliary blower is stopped.

JP2015-227748A

In general, when waste is input into the incinerator in a turbocharged waste treatment facility, when the facility is started up, the turbocharger is switched to autonomous operation (the compressor can be stably driven by the rotation of the turbine). This is carried out in parallel with the process of (bringing the supercharger to a state in which it is in a self-sustaining state), or it is carried out after the supercharger is brought into a state where it can operate independently. For example, in a waste treatment facility disclosed in Patent Document 1, a mode is described in which sludge is charged into an incinerator at the time of startup of the facility, in parallel with the process of making the supercharger self-sustaining. An example of the latter is often the case where, when starting up a facility, an arbitrary device such as a blower is connected to shorten the time until the final supercharger becomes self-sustaining. In such a case, the waste is put into the incinerator after the supercharger is brought into autonomous operation and all the connected devices, such as the blower, are stopped.

The present inventors discovered that when waste starts to be input into the incinerator, a sudden change in the environment inside the incinerator (for example, a change in the pressure inside the incinerator) occurs due to combustion, and as a result, the outlet pressure of the turbine increases. We focused on the problem that the flow rate of oxygen-containing gas entering the incinerator may decrease rapidly. If the outlet pressure and outlet flow rate of the turbine rapidly fluctuate, the operating state of the supercharger itself becomes unstable during and after the transition to self-sustaining operation. Therefore, this problem exists both when the waste is introduced in parallel with the process of making the supercharger self-sustaining, and when the waste is introduced after the supercharger becomes self-sustaining.

Such a phenomenon is particularly noticeable immediately after the start of waste input, and often continues until the waste input reaches a stable state. In such a case, if the equipment is equipped with a flow path for extraction or discharge and a flow rate adjustment valve, it is possible to finely adjust the gas flow rate and pressure to a certain extent by appropriately adjusting the opening degree. However, depending on the amount of waste to be input and the performance of the incinerator used, it may not be possible to cope with gas flow rate fluctuations and pressure fluctuations only by adjusting the opening degree of the flow rate regulating valve. Alternatively, in order to respond to such fluctuations in flow rate and pressure, equipment such as blowers that were driven when the turbocharger became self-sustaining were restarted when the equipment was started up. However, equipment start-up time and time to reach the desired flow rate and pressure are required. Therefore, the fluctuation adjustment may not be made in time, and the operation of the supercharger may become unstable, surging may occur, and the turbine may be stopped.

Therefore, the present invention provides a waste treatment system that can quickly respond to fluctuations in gas flow rate and pressure at the inlet of the incinerator after the start of inputting waste into the incinerator, and that can operate the turbocharger stably. The purpose is to provide a method for setting up equipment and waste treatment equipment.

A waste treatment facility according to one aspect of the present invention is a waste treatment facility that processes waste, and includes an incinerator that burns the waste, and a waste input device that inputs the waste into the incinerator. a compressor for compressing oxygen-containing gas; a supercharger including a turbine connected to the compressor and capable of driving the compressor by receiving supply of oxygen-containing gas; and oxygen-containing gas discharged from the compressor. a preheater that heats the oxygen-containing gas by exchanging heat with exhaust gas discharged from the incinerator; a flow path in at least a portion of the upstream portion of the compressor; the compressor, the preheater, the turbine, and the The incinerator is connected in this order, and includes a gas supply channel for supplying the oxygen-containing gas sucked from upstream of the compressor to the incinerator, and a gas supply section capable of supplying the oxygen-containing gas to the gas supply channel. a waste input device control unit that controls the waste input device to start inputting the waste after the gas supply unit is driven; and a gas supply unit control unit that controls the gas supply unit so that the gas supply unit stops operation.

According to this waste treatment facility, the gas supply section is driven, the waste is then thrown into the incinerator, and then the operation of the gas supply section is stopped. Therefore, even if there is a sudden change in the gas flow rate or pressure difference, especially near the incinerator entrance, after waste has started being input into the incinerator, the gas supply can be used without restarting the incinerator. can. Then, it is possible to quickly take measures to obtain an appropriate gas flow rate and pressure difference in the gas supply channel, particularly in the vicinity of the incinerator entrance. As a result, the supercharger can be operated stably.

Furthermore, the waste treatment equipment is provided with a regulating channel that adjusts the flow rate of the oxygen-containing gas discharged from the compressor and flowing into the incinerator or the turbine in the gas supply channel; and a regulating channel provided in the regulating channel. an on-off valve whose opening degree can be adjusted; and an opening degree of the on-off valve so that the supply flow rate of oxygen-containing gas flowing into the incinerator or the turbine is within a preset supply flow rate setting range. and an on-off valve opening degree control section, the gas supply section control section controlling a flow rate that is a ratio of the flow rate of the oxygen-containing gas flowing through the regulating flow path to the flow rate of the oxygen-containing gas passing through the compressor. The gas supply unit may be configured to be stopped after the adjustment rate becomes larger than a preset flow rate adjustment rate setting value.

According to this configuration, the gas supply section can be stopped while the operation of the supercharger is reliably stable.

Further, the waste treatment equipment is configured to switch between a flow path blocked state in which the compressor outlet and the turbine inlet are blocked in the gas supply flow path and a flow path connected state in which the compressor outlet and the turbine inlet are connected. The gas supply section is capable of supplying oxygen-containing gas to a portion of the gas supply flow path between the cutoff point in the flow path cutoff state and the turbine inlet, and After the gas supply unit is driven, the flow path blocked state is switched to the flow path connected state, and after the temperature inside the incinerator exceeds the furnace temperature set value, The waste input device may be configured to control the waste input device to initiate waste input.

According to this configuration, the oxygen-containing gas is supplied while the flow path is blocked before the waste is introduced. Therefore, when starting up the equipment, it is possible to shorten the time required to stably operate the supercharger. Furthermore, the input waste can be effectively incinerated.

Furthermore, the waste treatment equipment further includes a heating section that heats the oxygen-containing gas supplied from the gas supply section before it flows into the turbine, and the waste input device control section controls the gas supply section and the oxygen-containing gas. After the heating unit is driven and the flow path blocked state is switched to the flow path connected state, and the temperature inside the incinerator exceeds the temperature set value in the furnace, charging of the waste is started. The waste input device may be controlled according to the method.

According to this configuration, since the temperature of the oxygen-containing gas discharged from the preheater can be efficiently raised, the time required to stably operate the supercharger can be further shortened.

Furthermore, in the waste treatment equipment, the heating section includes a burner and a fuel supply channel for supplying fuel to the burner, and the waste treatment equipment stops the gas supply section. The heating unit may further include a heating unit control unit that controls the heating unit so as to extinguish the burner.

According to this configuration, the heated oxygen-containing gas can be stably supplied, and the burner is extinguished in a state where it is determined that the supercharger can be stably operated. Therefore, not only can stable operation of the supercharger be ensured, but also fuel consumption of the burner can be reduced and excessive combustion can be avoided.

Furthermore, in the waste treatment equipment, the waste input device control section starts the waste input speed at an initial input speed smaller than a preset waste rated input speed setting value, and The waste input device may be controlled to increase the waste input speed as time passes until the set value is reached for the first time.

According to this configuration, compared to the case where waste is inputted at the rated waste input speed from the start of waste input, gas flow rate fluctuations and pressure fluctuations at the incinerator inlet after the start of waste input into the incinerator are minimized. Can be made smaller.

Further, a method for starting up a waste treatment facility according to another aspect of the present invention includes an incinerator that burns waste, a waste input device that inputs the waste into the incinerator, and a compressor that compresses oxygen-containing gas. a supercharger including a turbine connected to the compressor and capable of driving the compressor by receiving supply of oxygen-containing gas; A preheater that heats the oxygen-containing gas by exchanging heat with exhaust gas, a flow path in at least a portion of the upstream portion of the compressor, the compressor, the preheater, the turbine, and the incinerator are connected in this order. and a gas supply channel for supplying the oxygen-containing gas drawn from upstream of the compressor to the incinerator, the method comprising: a step of driving the turbine by supplying the gas to the gas supply flow path; a step of starting to input the waste from the waste input device to the incinerator after driving the turbine; The method includes a step of stopping operation of the gas supply section after starting to input waste.

According to this method for starting up a waste treatment facility, the gas supply section is used to drive the turbine, and then the waste is thrown into the incinerator, and then the operation of the gas supply section is stopped. Therefore, even when waste is started to be input into the incinerator and there is a sudden change in the gas flow rate and pressure difference, especially near the incinerator entrance, the incinerator can be used without restarting the gas supply section. Then, it is possible to quickly take measures to obtain an appropriate gas flow rate and pressure difference in the gas supply channel, particularly in the vicinity of the incinerator entrance. As a result, the supercharger can be operated stably.

Furthermore, the method for starting up the waste treatment equipment includes controlling a flow rate of the oxygen-containing gas discharged from the compressor in the gas supply flow path and flowing into the incinerator or the turbine. and an on-off valve that is provided in the regulating flow path and whose opening degree can be adjusted. The opening degree of the on-off valve is adjusted so that the supply flow rate is within a preset supply flow rate setting range, and the oxygen-containing gas flowing through the flow path adjusts the flow rate of the oxygen-containing gas passing through the compressor. The method may further include the step of stopping the gas supply unit after the flow rate adjustment rate, which is a ratio of the flow rate, becomes larger than a preset flow rate adjustment rate set value.

According to this method, the gas supply section can be stopped while the operation of the supercharger is reliably stable.

Furthermore, the method for starting up the waste treatment equipment includes changing from a flow path blocked state in which the compressor outlet and the turbine inlet in the gas supply flow path are blocked to a flow path in which the compressor outlet and the turbine inlet are connected. The step of driving the turbine further includes the step of switching to a connected state, and the step of driving the turbine is performed by supplying oxygen-containing gas to a portion of the gas supply flow path between the cutoff point in the flow path cutoff state and the turbine inlet. and the step of starting to input the waste is performed after the flow path blocked state is switched to the flow path connected state and the temperature inside the incinerator exceeds a temperature setting value inside the incinerator. Good too.

According to this method, oxygen-containing gas is supplied while the flow path is blocked before waste is introduced. Therefore, when starting up the equipment, it is possible to shorten the time required to stably operate the supercharger. Furthermore, the input waste can be effectively incinerated.

Furthermore, in the method for starting up the waste treatment facility, the oxygen-containing gas supplied using the gas supply section may be heated before flowing into the turbine.

According to this method, the temperature of the oxygen-containing gas discharged from the preheater can be efficiently raised, so that the time required to stably operate the supercharger can be further shortened.

Further, the waste input speed is started at an initial input speed lower than a preset waste rated input speed setting value, and the waste input speed is started at an initial input speed lower than the waste rated input speed setting value set in advance, and the waste input speed is set as the waste input speed as time passes until the waste rated input speed setting value is reached for the first time. The waste may be introduced so as to increase the waste input speed.

According to this method, compared to the case where waste is input at the rated waste input speed from the start of waste input, gas flow rate fluctuations and pressure fluctuations at the incinerator inlet after the start of waste input into the incinerator are minimized. Can be made smaller.

As described above, according to the present invention, it is possible to promptly respond to the gas flow rate fluctuation and pressure fluctuation at the incinerator inlet after the start of inputting waste into the incinerator, and it is possible to stably operate the supercharger. It becomes possible to provide a waste treatment facility that can be used and a method for starting up the waste treatment facility.

1 is a diagram schematically showing the configuration of a waste treatment facility according to Embodiment 1 of the present invention. It is a figure showing operation control of the controller in the waste processing facility concerning Embodiment 1 of the present invention. It is a flowchart which shows control at the time of start-up in the waste treatment facility concerning Embodiment 1 of the present invention. FIG. 2 is a diagram schematically showing the configuration of waste treatment equipment according to Embodiment 2 of the present invention. FIG. 3 is a diagram schematically showing the configuration of waste treatment equipment according to Embodiment 3 of the present invention. It is a flowchart which shows the control at the time of start-up in the waste treatment facility based on Embodiment 3 of this invention. It is a figure which shows typically the structure of the waste treatment facility based on Embodiment 4 of this invention. It is a flowchart which shows the control at the time of start-up in the waste treatment facility based on Embodiment 4 of this invention. It is a figure which shows typically the structure of the waste treatment facility based on Embodiment 5 of this invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A waste treatment facility according to an embodiment of the present invention will be described in detail below based on the drawings.

(Embodiment 1)
First, the configuration of a waste treatment facility 1 according to Embodiment 1 of the present invention will be described with reference to FIG. 1.

The waste treatment facility 1 according to the first embodiment is a facility that incinerates waste such as sewage sludge.

As shown in FIG. 1, the waste treatment facility 1 includes an incinerator 10, a waste input device 20, a supercharger 30 having a compressor 31 and a turbine 32 connected via a connection 33, and a preheater 30. 40, a gas supply channel L1, a switching section 50, a gas supply section 60, a heating section 70, an adjustment channel L6, an on-off valve V6, and a controller 80.

Note that although FIG. 1 shows only the main components of the waste treatment facility 1 according to the first embodiment, the waste treatment facility 1 may further include other components that do not appear in the figure. It is something. Each component of the waste treatment facility 1 will be described in detail below.

The incinerator 10 incinerates waste such as sewage sludge, and is a fluidized bed incinerator. The incinerator 10 has a sand layer (fluidized sand) present in a fluidized bed 11 at the bottom of the incinerator 10 and a freeboard 12 present above the sand layer. The temperature inside the incinerator 10 according to the first embodiment is raised by first igniting the main burner 101, and then starting the oil gun 102, so that fuel (for example, heavy oil) is stored in the sand layer in the incinerator 10. is supplied intermittently to maintain a high temperature state. High-temperature exhaust gas (G1) generated during incineration of waste in the incinerator 10 is introduced into the preheater 40 through an exhaust gas path LG1.

The waste input device 20 inputs waste such as sewage sludge into the incinerator 10 . For example, the waste input device 20 inputs a predetermined mass of waste into the incinerator 10 intermittently or at an accelerated rate for a predetermined time (or a predetermined number of days). The waste input device 20 is further connected to, for example, a waste input pump (not shown).

The gas supply flow path L1 is a path (piping) that guides the oxygen-containing gas (A1) used for incineration of waste from the upstream portion of the compressor 31 to the incinerator 10, and includes at least a portion of the flow path in the upstream portion of the compressor 31. The compressor 31, preheater 40, turbine 32, and incinerator 10 are connected in this order. Therefore, the oxygen-containing gas discharged from the compressor 31 is supplied to the sand layer of the fluidized bed 11 in the incinerator 10 as a combustion gas via the preheater 40 and the turbine 32. The oxygen-containing gas is, for example, outside air (atmospheric temperature in an outdoor space), and in this case, the intake port for taking the oxygen-containing gas into the path is open to the outdoor space.

The compressor 31 of the supercharger 30 is driven to rotate so as to compress the oxygen-containing gas. The turbine 32 is connected to the compressor 31 via a connecting portion 33, and is supplied with the oxygen-containing gas and driven to rotate, thereby driving the compressor 31 to rotate.

The preheater 40 heats the oxygen-containing gas by exchanging heat between the exhaust gas discharged from the incinerator 10 and the oxygen-containing gas discharged from the compressor 31 . That is, the preheater 40 is a heat exchange device. The exhaust gas discharged from the preheater 40 after heating the oxygen-containing gas in the preheater 40 is appropriately treated in a treatment facility disposed downstream of the preheater 40.

The switching unit 50 switches the gas supply channel L1 between a channel blocked state in which the outlet of the compressor 31 and the inlet of the turbine 32 are blocked, and a channel connected state in which the outlet of the compressor 31 and the inlet of the turbine 32 are connected. Switch. Specifically, the switching unit 50 includes a switching valve V1, an exhaust flow path L2, and a first flow rate adjustment valve V2 whose opening degree can be adjusted. The flow path blocked state means that the switching valve V1 is fully closed (blocked point) and the first flow rate adjustment valve V2 is fully open, so the oxygen-containing gas discharged from the compressor 31 is not flowing into the turbine 32. It is in a state where it does not flow. The flow path connection state is a state in which the switching valve V1 is fully open and the first flow rate regulating valve V2 is fully closed, so that the oxygen-containing gas discharged from the compressor 31 flows to the turbine 32. .

The switching valve V1 is provided at a location between the outlet of the oxygen-containing gas of the preheater 40 and an intermediate portion L1C to which a blowing passage L3 of the gas supply section 60, which will be described later, is connected. As the opening degree of the switching valve V1 is closed, the flow rate flowing from the outlet side of the compressor 31 to the inlet of the turbine 32 decreases. As the switching valve V1, for example, a flow rate adjustment valve whose opening degree can be adjusted is used. The exhaust flow path L2 is provided so that the flow path is connected to a portion of the gas supply flow path L1 between the outlet of the oxygen-containing gas of the preheater 40 and the switching valve V1. The exhaust passage L2 is a passage for discharging the oxygen-containing gas discharged from the preheater 40 to the outside of the gas supply passage L1. The first flow rate regulating valve V2 is provided in the exhaust flow path L2. Therefore, by adjusting the opening degree of the first flow rate regulating valve V2, the flow rate of the oxygen-containing gas discharged to the outside is adjusted.

The gas supply unit 60 supplies oxygen-containing gas to an intermediate portion L1C, which is a portion of the gas supply flow path L1 between a portion blocked by the switching valve V1 and a portion where a burner 71, which will be described later, is provided. Specifically, the gas supply unit 60 includes a blower 61, a blowing passage L3, and a second flow rate regulating valve V3 whose opening degree can be adjusted. The ventilation flow path L3 is a flow path for supplying the oxygen-containing gas discharged by the blower 61 to the intermediate portion L1C of the gas supply flow path L1. The second flow rate regulating valve V3 is provided in the ventilation flow path L3. Therefore, by adjusting the opening degree of the second flow rate regulating valve V3, the amount of oxygen-containing gas supplied from the blower 61 to the turbine 32 is adjusted.

The heating section 70 heats the oxygen-containing gas discharged by the blower 61 and supplied to the intermediate section L1C through the blowing passage L3, before it flows into the turbine 32. Specifically, the heating unit 70 includes a burner 71, a fuel pump 72, a fuel supply channel L4, a third flow rate regulating valve V4 whose opening degree can be adjusted, a combustion gas supply channel L5, and a combustion gas supply channel L5. It has a fourth flow rate adjustment valve V5 that can adjust the flow rate. The fuel supply passage L4 is a passage for supplying fuel to the burner 71. The third flow rate regulating valve V4 is provided in the fuel supply channel L4. Therefore, by adjusting the opening degree of the third flow rate regulating valve V4, the amount of fuel supplied from the fuel pump 72 to the burner 71 is adjusted. The combustion gas supply passage L5 is a passage for supplying combustion gas to the burner 71. The combustion gas supply passage L5 branches from the blowing passage L3 and is connected to the burner 71. The fourth flow rate regulating valve V5 is provided in the combustion gas supply channel L5. Therefore, by adjusting the opening degree of the fourth flow rate regulating valve V5, the amount of combustion gas supplied from the blower 61 to the burner 71 is adjusted.

The regulation flow path L6 is a flow path for extracting a portion of the oxygen-containing gas discharged from the compressor 31 to the outside from a region between the outlet of the compressor 31 and the inlet of the preheater 40 in the gas supply flow path L1. . An on-off valve V6 whose opening degree can be adjusted is provided in the regulation flow path L6. Therefore, by adjusting the opening degree of the on-off valve V6, the flow rate adjustment rate r, which is the ratio of the flow rate of the oxygen-containing gas flowing through the regulation flow path L6 to the flow rate of the oxygen-containing gas passing through the compressor 31, is adjusted. can do. By adjusting the flow rate adjustment rate r, the ratio of the flow rate of the oxygen-containing gas supplied to the turbine 32 to the flow rate of the oxygen-containing gas discharged from the compressor 31 can be adjusted.

The waste treatment facility 1 further includes a plurality of sensors. Specifically, the waste treatment equipment 1 has a flow sensor 91 that detects the supply flow rate F1 of oxygen-containing gas flowing into the incinerator 10, and a flow rate F2 that detects the flow rate F2 flowing between the outlet of the compressor 31 and the regulation flow path L6. A flow rate sensor 92, a flow rate sensor 93 that detects the flow rate F3 flowing through the regulating channel L6, a temperature sensor 94 that detects the temperature T1 of the sand layer existing in the fluidized bed 11 in the incinerator 10, and oxygen at the outlet of the preheater 40. A temperature sensor 95 that detects the temperature T2 of the contained gas and a temperature sensor 96 that detects the temperature T3 of the oxygen-containing gas at the inlet of the turbine 32 are provided.

As shown in FIG. 2, the controller 80 includes a reception section 81, a determination section 82, a waste input device control section 83, a gas supply section control section 84, a switching section control section 85, a heating section control section 86, and an opening/closing valve opening degree. It is composed of a control section 87.

The receiving section 81 receives the detected values of the flow rate sensor 91, the flow rate sensor 92, the flow rate sensor 93, the temperature sensor 94, the temperature sensor 95, and the temperature sensor 96, and inputs the detected values to the determination section 82.

The determination unit 82 determines whether the flow rate or temperature input from the reception unit 81 is greater than or equal to each set value stored in the storage memory within the determination unit 82, and transmits the determination result to each control unit. Enter.

The waste input device control section 83 controls the waste input device 20. Specifically, the waste input device control unit 83 causes the waste input device control unit 83 to start inputting waste into the incinerator 10 based on the determination result input from the determination unit 82 when the waste treatment equipment 1 is started up. The waste input device 20 is controlled. In particular, the blower 61 is operated, the fuel pump 72 is operated, the burner 71 is ignited (the gas supply section 60 and the heating section 70 are driven), the flow path cutoff state is switched to the flow path connection state, and the incinerator After the temperature in the furnace 10 exceeds the furnace temperature set value, the waste input device 20 is controlled to start inputting waste.

The incinerator temperature setting value in the incinerator 10 is a temperature set in advance to determine whether or not waste can be incinerated when waste is input from the waste input device 20. The set temperature may be set using the temperature at any location in the incinerator 10 as an index, but in the first embodiment, the temperature in the incinerator 10 existing in the fluidized bed 11 in the incinerator 10 is set as an index. The temperature T1 of the sand layer is used as an index. As another example, the temperature of the freeboard 12 in the incinerator 10 may be set as an index.

The gas supply unit control unit 84 controls the gas supply unit 60. Specifically, the gas supply unit control unit 84 starts or stops operation of the blower 61 and controls the operation of the second flow rate regulating valve based on the determination result input from the determination unit 82 when starting up the waste treatment equipment 1. Controls the opening degree of V3. In particular, after the waste is introduced, the gas supply section 60 is controlled to close the opening of the second flow rate regulating valve V3 and stop the operation of the blower 61.

In the first embodiment, after the start of waste input, the waste input device control unit 83 starts the waste input speed at an initial input speed smaller than the waste rated input speed setting value, so that the waste input speed increases. Until the waste rated input speed setting value is reached for the first time, the waste input device 20 is controlled to increase the waste input speed as time passes. In other words, the waste input device 20 is controlled so that the input speed gradually increases over time immediately after the start of waste input, and finally reaches the rated waste input speed setting value and becomes constant. In this way, by controlling the waste input speed to be as slow as possible immediately after the waste is input, compared to the case where waste is input at a constant speed of the waste rated input speed setting value immediately after the waste is input. , sudden changes in the environment due to combustion in the incinerator 10 immediately after the waste is input can be minimized.

The switching unit control unit 85 controls the switching unit 50. Specifically, the switching unit control unit 85 controls the opening degree of the switching valve V1 and the opening of the first flow rate regulating valve V2 based on the determination result input from the determination unit 82 at the time of startup of the waste treatment equipment 1. Control the degree.

The heating section control section 86 controls the heating section 70 . Specifically, when the waste treatment equipment 1 is started up, the heating unit control unit 86 starts or stops operation of the fuel pump 72, ignites or ignites the burner 71, based on the determination result input from the determination unit 82. Extinguishing the fire, controlling the opening degree of the third flow rate regulating valve V4 and the opening degree of the fourth flow rate regulating valve V5. Furthermore, the heating unit 70 is controlled to extinguish the burner 71 when the waste input device 20 is started and before the blower 61 is stopped (before the operation of the gas supply unit 60 is stopped).

In particular, the heating unit control unit 86 controls the opening degree of the third flow rate regulating valve V4 and the opening degree of the fourth flow rate regulating valve V5 to adjust the temperature T3 of the oxygen-containing gas at the inlet of the turbine 32 to the turbine inlet gas temperature. The amount of oxygen-containing gas supplied to the burner 71 and the amount of fuel supplied are controlled so as to approach the set value Tγ. Here, the turbine inlet gas temperature set value Tγ is, specifically, a preset temperature (or temperature range) that is appropriate as the temperature of the oxygen-containing gas flowing into the incinerator 10. That is, by satisfying T3≧Tγ, in the first embodiment, the waste treatment equipment 1 can be operated while stably operating the supercharger 30 without supplying heated oxygen-containing gas by the heating unit 70. waste can be appropriately burned in the

The on-off valve opening degree control section 87 controls the opening degree of the on-off valve V6. Specifically, the on-off valve opening degree control unit 87 controls the opening degree of the on-off valve V6 so that the supply flow rate F1 becomes the supply flow rate set value F0 (or a value close to it). The supply flow rate setting value F0 is such that the supercharger 30 can be stably operated (the compressor 31 can be stably driven by the rotation of the turbine 32) after the waste treatment equipment 1 is started up, and the waste treatment This is a preset supply flow rate value of the oxygen-containing gas that is required to stably operate the equipment 1 itself.

The controller 80 mainly controls the operation of the switching section 50, the waste input device 20, the gas supply section 60, the heating section 70, and the on-off valve V6 when starting up the waste treatment facility 1. Control in the controller 80 according to the first embodiment will be explained according to the flowchart of FIG. 3.

The start-up of the waste treatment equipment 1 is controlled by the switching unit control unit 85 with the switching valve V1 fully closed and the first flow rate adjustment valve V2 fully open, that is, the flow path is blocked in the gas supply flow path L1. It is started in the state.

As shown in FIG. 3, until waste input is started, operation control regarding the connection of the supercharger 30 and operation control regarding the incinerator 10 are performed separately.

First, operation control regarding connection of the supercharger 30 will be explained.

As shown in FIG. 3, first, the flow rate adjustment control A by the second flow rate adjustment valve V3 is started (step ST101), the blower 61 is operated, the fuel pump 72 is operated, and the burner 71 is ignited (step ST101). ST102).

The flow rate adjustment control A refers to an operation control in which determination of the supply flow rate F1 (detected value of the flow rate sensor 91) and adjustment of the opening degree of the second flow rate adjustment valve V3 by the gas supply unit control unit 84 are repeated. Specifically, in flow rate adjustment control A, when the supply flow rate F1 is smaller than the supply flow rate set value F0, the gas supply unit control unit 84 adjusts to increase the opening degree of the second flow rate adjustment valve V3, and the supply flow rate F1 increases. If the supply flow rate is larger than the set value F0, the gas supply unit control unit 84 adjusts the opening degree of the second flow rate adjustment valve V3 to lower it, and if the supply flow rate F1=the set supply flow rate F0, the opening degree is adjusted. do not have. As a result of the flow rate adjustment control A, the supply flow rate F1 is maintained at the supply flow rate set value F0 (or a value close to it). In flow rate adjustment control A, on-off valve V6 is not used. While the flow rate adjustment control A is being performed, the opening degree of the on-off valve V6 is 0%. This is because the supply flow rate F1 can be maintained at a stable value and the supercharger 30 can be stably operated by adjusting the flow rate only by adjusting the opening degree of the second flow rate adjustment valve V3.

When operating the fuel pump 72 and igniting the burner 71, the opening degrees of the third flow rate regulating valve V4 and the fourth flow rate regulating valve V5 are adjusted by the heating section control unit 86 so that the inlet temperature of the turbine 32 is appropriate. . By controlling in this way, the oxygen-containing gas supplied by the blower 61 and heated by the heating section 70 is supplied to the turbine 32 in a state where the gas supply flow path L1 is blocked, so that the turbine 32 can be effectively operated. It can be rotationally driven, and as a result, the temperature of the exhaust gas entering the preheater 40 can also be efficiently raised. Ultimately, the time required to stably operate the supercharger 30 can be shortened.

Thereafter, when the temperature of the exhaust gas discharged from the incinerator 10 and entering the preheater 40 rises, and a condition that enables stable operation of the supercharger 30 is established, the switching valve V1 opens and the first flow rate is increased. Control valve V2 is controlled to close. In the first embodiment, the temperature sensor 95 that detects the temperature T2 of the oxygen-containing gas at the outlet of the preheater 40 (detected value of the temperature sensor 95) determines whether or not the temperature T2 of the oxygen-containing gas at the outlet of the preheater 40 is equal to or higher than a preset preheater outlet gas temperature setting value Tβ. By determining (step ST103), it is determined whether the condition is satisfied. If T2 is less than the preheater outlet gas temperature set value Tβ (NO in step ST103), wait until the preheater outlet gas temperature rises to the preheater outlet gas temperature set value Tβ while appropriately adjusting and operating the blower 61 and the like. On the other hand, if T2 is equal to or higher than the preheater outlet gas temperature set value Tβ (YES in step ST103), the switching unit control unit 85 controls the opening degrees of the switching valve V1 and the first flow rate regulating valve V2 to The state of the gas supply channel L1 related to the connection of the feeder 30 is gradually switched from the channel blocked state to the channel connected state.

At the time of switching, the pressure of the oxygen-containing gas discharged from the compressor 31 is set to be greater than the sum of the pressure of the oxygen-containing gas at the intermediate portion L1C and a predetermined value set in advance. This is to prevent the oxygen-containing gas supplied from the gas supply section 60 from flowing back from the intermediate section L1C to the preheater 40 side. When the pressure of the oxygen-containing gas discharged from the compressor 31 is equal to or lower than the sum of the pressure of the oxygen-containing gas at the intermediate portion L1C and a predetermined value, the opening degree of the first flow rate regulating valve V2 is adjusted. By lowering the pressure, the pressure of the oxygen-containing gas discharged from the compressor 31 can be increased. While maintaining the state having such a pressure difference, the switching unit control unit 85 controls the opening degree of the switching valve V1 to 100% and the opening degree of the first flow rate regulating valve V2 to 0% ( Step ST104).

Next, operation control regarding the incinerator 10 will be explained.

Regarding the incinerator 10, as described above, the main burner 101 is ignited, the oil gun 102 is started, and the temperature of the sand layer in the incinerator is increased (step ST105). Generally, the main burner 101 is extinguished after raising the temperature inside the incinerator 10 to a predetermined temperature (eg, 500° C. to 700° C.). On the other hand, the oil gun 102 is activated when the internal temperature of the incinerator 10 reaches a predetermined temperature (for example, 500° C. to 600° C.), and thereafter is operated to supply fuel intermittently. The process for raising the temperature of the incinerator 10 may be started at any time in steps ST101 to ST104 described above.

As a criterion for determining whether waste can be thrown into the incinerator 10, the temperature T1 (detected value of the temperature sensor 94) of the sand layer existing in the fluidized bed 11 in the incinerator 10 is determined by the incinerator temperature set value Tα ( It is determined whether the temperature of the sand layer in the incinerator 10 is equal to or higher than a set value (step ST106). That is, the in-furnace temperature set value Tα is a preset temperature at which it is determined that the waste can be incinerated even if it is thrown into the incinerator 10. If T1 is less than the furnace temperature set value Tα (NO in step ST106), the furnace temperature set value is set while the oil gun 102 is kept operating (and the main burner 101 is kept ignited as necessary). Wait until it rises to Tα.

Thereafter, the opening degree of the switching valve V1 is controlled to 100%, the opening degree of the first flow rate regulating valve V2 is controlled to 0%, and the state is completely switched to the flow path connection state (step ST104), and T1 is the temperature inside the furnace. If the value exceeds the set value Tα (YES in step ST106), the waste input device 20 is controlled to start inputting waste into the incinerator 10 (step ST107).

The start of waste input causes a sudden change in the environment due to combustion within the incinerator 10, and in particular, a sudden change occurs in the gas flow rate and pressure difference near the inlet of the incinerator 10. However, in the first embodiment, the operation of the blower 61 (driving of the gas supply section 60) is still continuing at this point. Therefore, by using the blower 61 and the like while appropriately adjusting the gas flow rate and pressure difference in the vicinity of the inlet of the incinerator 10, the required gas flow rate can be supplied.

As described above, in the first embodiment, after the start of waste input, until the waste input speed reaches the waste rated input speed setting value for the first time, the waste input speed increases as time passes. The waste input device 20 is controlled.

After the waste input device 20 is controlled to start inputting waste into the incinerator 10, the temperature of the exhaust gas discharged from the incinerator 10 increases as time passes. Along with this, the temperature and flow rate of the oxygen-containing gas flowing into the turbine 32 also rise. As a result, the temperature T3 of the oxygen-containing gas at the inlet of the turbine 32 gradually approaches the turbine inlet gas temperature set value Tγ, so the amount of heating of the oxygen-containing gas required by the burner 71 gradually decreases. That is, under the control of the heating unit control unit 86, as the temperature T3 of the oxygen-containing gas at the inlet of the turbine 32 gradually approaches the turbine inlet gas temperature set value Tγ, the amount of fuel supplied to the burner 71 is set in advance. gradually approaches the predetermined lower limit value. At this time, the amount of combustion gas supplied to the burner 71 may also be lowered to be controlled so as to approach a predetermined lower limit value. Specifically, the opening degree of the third flow rate adjustment valve V4 (and the degree of opening of the fourth flow rate adjustment valve V5 as necessary) is controlled by the heating unit control unit 86 to gradually close, and finally the burner 71 It is determined whether the fuel supply amount has reached the lower limit value (and whether the combustion gas supply amount has reached the lower limit value if necessary) (step ST108).

After the amount of fuel supplied to the burner 71 reaches the lower limit value (and the amount of combustion gas supplied if necessary reaches the lower limit value) (in the case of YES in step ST108), the fuel pump 72 is stopped by the heating section control section 86. , the burner 71 is extinguished (step ST109). However, the fuel pump 72 and burner 71 do not necessarily have to be stopped and extinguished at this point. For example, the fuel pump 72 and burner 71 may be stopped and extinguished immediately after the start of the flow rate adjustment control B, which will be described later, or they may remain activated for a certain period of time even after the start of the flow rate adjustment control B. Specifically, from this point in time until the time point when the flow rate adjustment rate r becomes equal to or higher than a preset flow rate adjustment rate set value r0, which will be explained in detail later (the time point in the case of YES in step ST111), the fuel pump 72 It is sufficient that the burner 71 is stopped and the burner 71 is extinguished. By stopping the operation of the fuel pump 72 and extinguishing the burner 71 at an appropriate time, it is possible to ensure stable operation of the supercharger 30, reduce fuel consumption of the burner 71, and prevent excessive combustion. can also be avoided.

Next, the flow rate adjustment control A using the second flow rate adjustment valve V3 is ended, and the flow rate adjustment control B using the on-off valve V6 and the second flow rate adjustment valve V3 is started (step ST110). Flow rate adjustment control B is performed until after the blower 61 is finally stopped. The flow rate adjustment control B refers to an operation control in which determination of the supply flow rate F1, adjustment of the opening degree of the on-off valve V6, determination of the flow rate adjustment rate r, and adjustment of the opening degree of the second flow rate adjustment valve V3 are repeated. Specifically, in the flow rate adjustment control B, first, when the supply flow rate F1 is smaller than the supply flow rate set value F0, the on-off valve opening degree control unit 87 lowers the opening degree of the on-off valve V6 (the flow rate adjustment rate r is If the supply flow rate F1 is larger than the supply flow rate set value F0, the on-off valve opening degree control section 87 increases the opening degree of the on-off valve V6 (so that the flow rate adjustment rate r increases). adjust. After those adjustments, or when the supply flow rate F1 = supply flow rate setting value F0, if the flow rate adjustment rate r is less than a preset flow rate adjustment rate setting value r0, which will be explained in detail later, the gas supply unit control unit 84 is adjusted to increase the opening degree of the second flow rate adjustment valve V3, and when the flow rate adjustment rate r is larger than the flow rate adjustment rate set value r0, the gas supply unit control unit 84 lowers the opening degree of the second flow rate adjustment valve V3. When the flow rate adjustment rate r=flow rate adjustment rate set value r0, the opening degree adjustment is not performed. Thereafter, the process returns to determining the supply flow rate F1 and adjusting the opening degree of the on-off valve V6, and these determinations and opening adjustments are repeated until the blower 61 finally stops operating and the flow rate adjustment control B ends. . When the flow rate adjustment control B is repeated in this way, the value of the flow rate adjustment rate r gradually increases while the supply flow rate F1 is controlled to the supply flow rate set value F0 (or a value close to it).

The flow rate adjustment rate r is calculated by dividing the flow rate F3 (detected value of the flow rate sensor 93) flowing through the regulating channel L6 by the flow rate F2 (detected value of the flow rate sensor 92) flowing between the outlet of the compressor 31 and the regulating channel L6. It is calculated by multiplying by 100. That is, the larger the flow rate adjustment rate r is, the more it is possible to increase the flow rate flowing from the upstream side to the downstream side, that is, the supply flow rate F1. That is, if the flow rate adjustment rate r is a large value, for example, if the supply flow rate F1 of the oxygen-containing gas flowing into the incinerator 10 becomes less than a predetermined value, the on-off valve opening degree control section 87 By controlling the opening degree of the on-off valve V6 to close, the supply flow rate F1 can be increased. On the other hand, if the flow rate adjustment rate r is a smaller value, the opposite is true.

As described above, while the flow rate adjustment control B is being repeated, it is determined whether the flow rate adjustment rate r is equal to or greater than the preset flow rate adjustment rate setting value r0 (greater than r0, less than r0, or It is determined whether they are equal) (step ST111). It is preferable to set the flow rate adjustment rate set value r0 to a somewhat large value (eg, 50% to 80%). That is, it is preferable to set a preset value so that the supply flow rate F1 of the oxygen-containing gas flowing into the sand layer of the incinerator 10 can be sufficiently increased even after the blower 61 is shut down. When the flow rate adjustment rate r becomes equal to or higher than the preset flow rate adjustment rate set value r0 (in the case of YES in step ST111), that is, while the supply flow rate F1 is controlled to the supply flow rate set value F0 (or a value close to it), When the supply flow rate F1 can be increased sufficiently, the blower 61 is finally controlled to be stopped by the gas supply section control section 84 (step ST112). This is because as the flow rate adjustment control B is repeated, the value of the flow rate adjustment rate r increases, and when the flow rate adjustment rate r continues to be equal to or higher than the flow rate adjustment rate set value r0, the second flow rate adjustment valve V3 is opened. This is because the temperature is controlled to gradually decrease. Thereafter, the flow rate adjustment control B is ended (step ST113).

Finally, by stopping the operation of the blower 61 for the first time at such a point, the blower 61 can be used without restarting after waste input has started. Therefore, after the start of waste input, the blower 61 can be used to quickly adjust the flow rate and pressure difference of the oxygen-containing gas in the gas supply channel L1, particularly near the inlet of the incinerator 10. As a result, the supercharger 30 can be stably operated even after starting to input waste.

Furthermore, by stopping the operation of the blower 61 in a state where the supply flow rate F1 can be sufficiently increased by the on-off valve V6, it is possible to stop the operation of the blower 61 while the operation of the supercharger 30 is reliably stabilized. can. Further, it is possible to avoid increasing costs due to unnecessary operation of the blower 61.

(Embodiment 2)
Next, a waste treatment facility 1A according to Embodiment 2 of the present invention will be described with reference to FIG. 4.

The waste treatment equipment 1A according to the second embodiment basically has the same configuration as the waste treatment equipment 1 according to the first embodiment described above, and has the same effects. However, the waste treatment equipment 1A differs from the above-described first embodiment mainly in that the gas supply section 60 includes a plurality of blowers, specifically, a first blower 61A and a second blower 61B. Hereinafter, differences from the first embodiment described above will be mainly explained.

As shown in FIG. 4, the gas supply unit 60 includes a burner 71 provided between a portion of the gas supply flow path L1 that is shut off by the switching valve V1 and the inlet of the turbine 32; Oxygen-containing gas is supplied to the intermediate portion L1C', which is a portion between the point and the turbine 32 inlet.

Specifically, the gas supply unit 60 includes a first blower 61A, an air flow path L7, a fifth flow rate adjustment valve V7 whose opening degree can be adjusted, a second blower 61B, an air flow path L8, and an air flow path L8. It has a sixth flow rate adjustment valve V8 that can adjust the flow rate.

The ventilation flow path L7 is a flow path for supplying the burner 71 with the oxygen-containing gas discharged by the first blower 61A. That is, while the burner 71 is ignited, the blower passage L7 functions as a combustion gas supply passage for the heating unit 70, and the first blower 61A functions as a combustion gas supply blower for the heating unit 70. On the other hand, after the burner 71 is extinguished, the first blower 61A can also function as a normal blower that supplies unheated oxygen-containing gas to the gas supply channel L1. The fifth flow rate regulating valve V7 is provided in the ventilation flow path L7. By adjusting the opening degree of the fifth flow rate regulating valve V7, the amount of oxygen-containing gas (combustion gas) supplied from the first blower 61A to the burner 71 is adjusted.

The ventilation flow path L8 is a flow path for supplying the oxygen-containing gas discharged by the second blower 61B to the intermediate portion L1C' of the gas supply flow path L1. The sixth flow rate regulating valve V8 is provided in the ventilation flow path L8. By adjusting the opening degree of the sixth flow rate regulating valve V8, the amount of oxygen-containing gas supplied from the second blower 61B to the turbine 32 is adjusted. Note that the oxygen-containing gas discharged by the second blower 61B does not pass through the location where the burner 71 is provided in the gas supply flow path L1, and thus flows into the turbine 32 without being heated.

When starting up the waste treatment equipment 1, the waste input equipment control unit 83 operates the first blower 61A, the second blower 61B, and the fuel pump 72, and ignites the burner 71 (gas supply unit 60 and heating unit). 70 is driven), the flow path blocked state is switched to the flow path connected state, and after the temperature inside the incinerator 10 exceeds the in-furnace temperature set value Tα, the waste input is started. Controls the device 20.

Further, the gas supply unit control unit 84 controls the flow rate adjustment rate r to adjust the flow rate after the waste has been inputted and while the supply flow rate F1 is being controlled to the supply flow rate set value F0 at the time of startup of the waste treatment equipment 1. It is sufficient that at least one of the first blower 61A and the second blower 61B is controlled to stop operating for the first time when the rate setting value r0 or more is reached. Note that when the first blower 61A is stopped, the opening of the fifth flow regulating valve V7 is controlled to be closed, and when the second blower 61B is stopped, the opening of the sixth flow regulating valve V8 is controlled to be closed. Control to close.

At such a timing, either the first blower 61A or the second blower 61B, or both the first blower 61A and the second blower 61B are controlled to stop operation for the first time, thereby starting the waste input. After that, either or both blowers can be used without restarting. As a result, it is possible to promptly respond to fluctuations in the flow rate of the oxygen-containing gas near the inlet of the incinerator 10 after the start of waste input, and the supercharger 30 can be stably operated.

According to the waste treatment equipment 1A of the second embodiment, since the first blower 61A functions as a combustion gas supply blower while the burner 71 is ignited, the temperature of the oxygen-containing gas discharged from the preheater 40 can be controlled more efficiently. In the end, it is possible to shorten the time required to stably operate the supercharger 30. Furthermore, according to the waste treatment equipment 1A of the second embodiment, the timing of starting and stopping the operation of the first blower 61A and the second blower 61B, and the performance, type, etc. of each blower can be adjusted and selected as appropriate. can. Therefore, startup can be performed with more preferable and stable operation control in accordance with the specific configuration of the waste treatment facility 1A.

In the waste treatment equipment 1A of the second embodiment, the intermediate portion L1C' of the gas supply channel L1 to which the ventilation channel L8 is connected for supplying the oxygen-containing gas discharged by the second blower 61B is , is not limited to the location between the location where the burner 71 is provided and the inlet of the turbine 32 shown in FIG. Specifically, if it is a location between the turbine 32 inlet location and the switching valve V1 location, for example, the location is closer to the upstream location than the location where the burner 71 is provided and is closer to the switching valve V1 location. I don't mind.

Further, as a modification of the second embodiment, the number of blowers included in the gas supply section 60 may be three or more, and the locations where each blower is connected by the air flow path are not limited.

(Embodiment 3)
In the first and second embodiments described above, the heating section 70 was provided, but the effects of the present invention can still be achieved even if the heating section 70 is omitted. When the heating section 70 is omitted, the heating section control section 86 in the controller 80 that controls its operation can also be omitted. In the third embodiment, such a waste treatment facility 1B will be described with reference to FIG. 5. Hereinafter, differences from the first embodiment described above will be mainly explained.

The waste input device control unit 83 operates when the waste treatment equipment 1B is started up, the blower 61 is operated (the gas supply unit 60 is driven), the flow path is switched from the flow path blocked state to the flow path connected state, and the incineration is performed. After the temperature inside the furnace 10 exceeds the furnace temperature set value Tα, the waste input device 20 is controlled to start inputting waste. At startup of the waste treatment equipment 1B, the gas supply unit control unit 84 controls the flow rate adjustment rate r to be set to the flow rate adjustment rate setting after the waste has been input and while the supply flow rate F1 is being controlled to the supply flow rate set value F0. The blower 61 is controlled to be stopped only when the value r0 or more is reached.

Control in the controller 80 according to the third embodiment is shown in the flowchart of FIG. This embodiment differs greatly from the first embodiment described above in that there is no operation control regarding the operation of the fuel pump 72, ignition of the burner 71, etc. (operation control regarding the heating section 70).

First, the start-up of the waste treatment equipment 1B is controlled by the gas supply flow in which the switching valve V1 is fully closed by the switching unit control unit 85 and the first flow rate regulating valve V2 is fully opened, as in the first embodiment. The process is started in a state in which the path L1 is blocked.

First, the flow rate adjustment control A by the second flow rate adjustment valve V3 is started (step ST201), and the blower 61 is operated in a state where the gas supply flow path L1 is shut off (step ST202), so that the turbine 32 is stabilized. of oxygen-containing gas. Therefore, the turbine 32 can be driven to rotate stably when the waste treatment facility 1B is started up. The flow rate adjustment control A is as described in the first embodiment above. Further, in the third embodiment, as shown in step ST203, the condition that enables stable operation of the supercharger 30 is set to the turbine rotation speed setting value RTδ where the rotation speed RT (rpm) of the turbine 32 is set in advance. (rpm) or more.

If the rotational speed RT of the turbine 32 is less than the turbine rotational speed setting value RTδ (NO in step ST203), the blower 61 is adjusted and operated as appropriate and waits until it reaches the turbine rotational speed setting value RTδ. On the other hand, when the rotation speed RT is equal to or higher than the turbine rotation speed setting value RTδ (in the case of YES in step ST203), the switching unit control unit 85 controls the opening degrees of the switching valve V1 and the first flow rate regulating valve V2 to The state of the gas supply channel L1 related to the connection of the feeder 30 is gradually switched from the channel blocked state to the channel connected state. Finally, the opening degree of the switching valve V1 is controlled to 100%, and the opening degree of the first flow rate regulating valve V2 is controlled to 0% (step ST204).

The ignition of the main burner 101 and the activation of the oil gun 102 in step ST205 of the operation control regarding the incinerator 10 and the determination of the temperature T1 of the sand layer in the incinerator 10 in step ST206 are the same as in step ST105 and step ST106 in the first embodiment described above. It is similar to

Thereafter, after the same conditions as in the first embodiment described above are satisfied, in step ST207, the waste input device 20 is controlled to start inputting waste.

After the waste input device 20 is controlled to start inputting waste in step ST207, the flow rate adjustment control A by the second flow rate adjustment valve V3 is ended, and the flow rate adjustment control A by the on-off valve V6 and the second flow rate adjustment valve V3 is controlled. Flow rate adjustment control B is started (step ST208). The flow rate adjustment control B is as described in the first embodiment. In this way, as in Embodiment 1, while the flow rate adjustment control B is repeated, the value of the flow rate adjustment rate r gradually changes while the supply flow rate F1 is controlled to the supply flow rate set value F0 (or a value close to it). becomes larger. When the flow rate adjustment rate r becomes equal to or higher than the flow rate adjustment rate set value r0 (YES in step ST209), that is, when the supply flow rate F1 can be increased sufficiently, the blower 61 is also operated. It is controlled to stop (step ST210). Thereafter, the flow rate adjustment control B is ended (step ST211).

(Embodiment 4)
In the first to third embodiments described above, the switching section 50 was provided to switch the connection state between the preheater 40 outlet and the turbine 32 inlet in the gas supply flow path L1, but the present invention can be achieved even if the switching section 50 is omitted. It is possible to achieve the following effects. When the switching section 50 is omitted, the switching section control section 85 in the controller 80 that controls its operation can also be omitted. Furthermore, in this case, the location to which the oxygen-containing gas is supplied by the gas supply section 60 is not limited to the location between the cutoff location in the flow path cutoff state and the inlet of the turbine 32, and the location between the compressor 31 in the gas supply flow path L1. It may be supplied to any location from the upstream channel to the inlet of the incinerator 10. In the fourth embodiment, such a waste treatment facility 1C will be described with reference to FIG. 7. Hereinafter, differences from the third embodiment described above will be mainly explained.

As shown in FIG. 7, the gas supply unit 60 supplies oxygen-containing gas to a portion of the gas supply flow path L1 between the intake valve V9 provided in the flow path upstream of the compressor 31 and the inlet of the compressor 31. . The intake valve V9 is a valve for sucking in air (oxygen-containing gas) existing at the end of the flow path in the upstream portion of the compressor 31 in the gas supply flow path L1.

The waste input equipment control unit 83 controls when the waste treatment equipment 1C is started up, the blower 61 is operated (the gas supply unit 60 is driven), and the temperature inside the incinerator 10 exceeds the in-furnace temperature set value Tα. After that, the waste input device 20 is controlled to start inputting waste. The gas supply unit control unit 84 controls the flow rate adjustment rate r to be set to the flow rate adjustment rate set value r0 while waste is input and the supply flow rate F1 is controlled to the supply flow rate set value F0 at the time of startup of the waste treatment equipment 1C. In addition, the blower 61 is controlled to be stopped only when the opening degree of the intake valve V9 is 100%.

Control in the controller 80 according to the fourth embodiment is shown in the flowchart of FIG. This embodiment differs from the third embodiment described above in that there is no opening degree adjustment of the switching valve V1 and the first flow rate adjustment valve V2, and there is flow rate adjustment control C using the intake valve V9.

First, flow rate adjustment control A by the second flow rate adjustment valve V3 is started (step ST301), and at the same time, flow rate adjustment control C by the intake valve V9 is started (step ST302). The details of the flow rate adjustment control C will be explained later, but at the time of starting, the opening degree of the intake valve V9 is 0%. By operating the blower 61 in this state (step ST303), a stable amount of oxygen-containing gas can be supplied to the turbine 32. Therefore, the turbine 32 can be driven to rotate stably when starting up the waste treatment facility 1C. Next, it is determined whether the rotation speed RT (rpm) of the turbine 32 is equal to or higher than a preset turbine rotation speed setting value RTδ (rpm) (step ST304). If the rotation speed RT of the turbine 32 is less than the turbine rotation speed set value RTδ (NO in step ST304), the blower 61 is adjusted and operated as appropriate and waits until it reaches the turbine rotation speed set value RTδ. The ignition of the main burner 101 and the activation of the oil gun 102 in step ST305 of the operation control regarding the incinerator 10 and the determination of the temperature T1 of the sand layer in the incinerator 10 in step ST306 are performed in step ST205 and step ST206 in the third embodiment described above. It is similar to

Thereafter, if the rotation speed RT is equal to or higher than the turbine rotation speed set value RTδ (in the case of YES in step ST304), and the temperature T1 of the sand layer in the incinerator 10 becomes equal to or higher than the in-furnace temperature set value Tα (in the case of step ST306) In the case of YES), in step ST307, the waste input device 20 is controlled to start inputting waste, the flow rate adjustment control A by the second flow rate adjustment valve V3 is ended, and the on-off valve V6 and the second flow rate are Flow rate adjustment control B using adjustment valve V3 is started (step ST308). Thereafter, as in the third embodiment described above, in step ST309, the process waits until the flow rate adjustment rate r becomes equal to or greater than the flow rate adjustment rate set value r0.

Here, the flow rate adjustment control C by the intake valve V9 in step ST302 mentioned above refers to an operation control in which determination of the suction pressure P at the inlet of the compressor 31 and adjustment of the opening degree of the intake valve V9 are repeated. Specifically, in the flow rate adjustment control C, when the suction pressure P at the inlet of the compressor 31 is less than or equal to the suction pressure set value P0, the opening degree of the intake valve V9 is adjusted to gradually increase from 0%, and the suction pressure set value P0 is adjusted. If it is larger than that, wait until the suction pressure falls to the set value P0. When the opening degree of the intake valve V9 becomes 100% by repeating the flow rate adjustment control C (in the case of YES in step ST310), the suction pressure P at the inlet of the compressor 31 is maintained at the suction pressure set value P0 or less. Become. That is, the oxygen-containing gas is stably supplied throughout the gas supply channel L1. Thereafter, the flow rate adjustment control C is ended (step ST311).

In the fourth embodiment, when the flow rate adjustment control C has ended and the flow rate adjustment rate r is equal to or higher than the flow rate adjustment rate setting value r0 (YES in step ST309), the blower 61 is also It is controlled to stop operation (step ST312). Thereafter, the flow rate adjustment control B is ended (step ST313).

(Embodiment 5)
In the third embodiment described above, the switching unit 50 and the gas supply unit 60 were sequentially provided in the gas supply passage L1 between the outlet of the preheater 40 and the inlet of the turbine 32; Even if the switching section 50 and the gas supply section 60 are provided in this order in the gas supply flow path L1 between them, the effects of the present invention can be achieved. FIG. 9 is a diagram schematically showing a waste treatment facility 1D having such a configuration. The control in the controller 80 according to the fifth embodiment is the same as the flowchart in FIG. 6 .

(Other embodiments)
In the waste treatment equipment of the present invention, in the first to fifth embodiments described above, the regulating flow path L6, the on-off valve V6, and the on-off valve opening degree control section 87 were provided, but these ultimately control the supercharger 30. This is a component for stopping the gas supply unit 60 in a state where the operation is reliably stable, and does not need to be provided. Specifically, if the waste treatment equipment does not include a regulating flow path, an on-off valve, and an on-off valve opening control section, for example, the gas supply section control section may gradually turn on a blower or the like after waste is input. The gas supply section is appropriately controlled to stop operation. Alternatively, for example, after the waste has been input, the gas supply control unit may be configured to , the gas supply section may be controlled to stop operation for the first time. The preset conditions under which it is determined that the supercharger can operate stably even without the supply of the oxygen-containing gas include a configuration that does not include a heating section as in the third to fifth embodiments described above. The case may be different depending on the case where the heating section is provided as in the first and second embodiments described above. This will be described in detail below.

If the configuration does not include a heating part as in the third to fifth embodiments described above, the preset conditions for determining that the supercharger can operate stably even without the supply of the oxygen-containing gas are as follows. For example, if the temperature of the oxygen-containing gas at the inlet of the turbine after inputting the waste is higher than the preset turbine inlet gas temperature setting value Tγ, the supply flow rate F1 after inputting the waste is equal to When the supply flow rate setting value F0 is exceeded, when the turbine rotation speed RT after waste is input is a value exceeding the above-mentioned turbine rotation speed setting value RTδ, or when these are combined, etc. can be mentioned. Furthermore, in a configuration without a heating section, the oxygen-containing gas supplied to the incinerator is not heated, so the temperature of the oxygen-containing gas at the inlet of the turbine is the same as the temperature of the oxygen-containing gas at the outlet of the preheater. Therefore, instead of the temperature of the oxygen-containing gas at the inlet of the turbine, the temperature of the oxygen-containing gas at the outlet of the preheater after inputting the waste becomes a value exceeding the preset turbine inlet gas temperature set value Tγ. The preset condition may be set such that the condition is the same. The gas supply unit, such as a blower, may be controlled to stop operating only after these conditions are met.

On the other hand, in the case of a configuration including a heating section as in the first and second embodiments described above, there are preset conditions under which it is determined that the supercharger can operate stably even without the supply of the oxygen-containing gas. may vary depending on whether the heating section is activated or not. When the heating section is operating, the preset conditions under which it is determined that the supercharger can operate stably even without the supply of the oxygen-containing gas include, for example, the oxygen at the turbine inlet after waste is input. When the temperature T3 of the contained gas exceeds the preset turbine inlet gas temperature set value Tγ described above, the supply flow rate F1 after inputting the waste exceeds the supply flow rate set value F0 described above. In this case, the turbine rotation speed RT after inputting the waste is higher than the above-mentioned turbine rotation speed setting value RTδ, or a combination of these can be cited. The gas supply unit, such as a blower, may be controlled to stop operating only after these conditions are met.

Even if the configuration includes a heating section as in Embodiments 1 and 2 described above, if the heating section is not driven and is stopped, the turbocharger will not be able to operate stably even if the oxygen-containing gas is not supplied. The preset conditions for determining that operation is possible are the same as in the case of the configuration without the heating section described above. In other words, the preset conditions under which it is determined that the supercharger can operate stably even without the supply of the oxygen-containing gas are, for example, when the temperature of the oxygen-containing gas at the inlet of the turbine after inputting waste is as described above. If the value exceeds the preset turbine inlet gas temperature set value Tγ, and if the supply flow rate F1 after waste is input exceeds the above-mentioned supply flow rate set value F0, then after the waste is input Examples include a case where the turbine rotation speed RT is greater than the above-mentioned turbine rotation speed setting value RTδ, or a combination of these. In addition, when the heating section is not operating and is stopped, the oxygen-containing gas supplied to the incinerator is not heated, as in the case of a configuration without a heating section, so the inlet of the turbine is not heated. In place of the temperature of the oxygen-containing gas, the preset value is set for the case where the temperature of the oxygen-containing gas at the outlet of the preheater after inputting the waste exceeds the preset turbine inlet gas temperature setting value Tγ described above. The conditions may be set as follows. The gas supply unit, such as a blower, may be controlled to stop operating only after these conditions are met.

By controlling the gas supply parts such as blowers to stop operation only after the preset conditions described above are met, sudden changes in gas flow rate and pressure difference near the incinerator entrance immediately after waste is input can be avoided. Fluctuations can be quickly responded to, and the supercharger can be operated stably even after that. Alternatively, the regulation flow path and the on-off valve are still provided, but the on-off valve opening degree control section is not provided, and the on-off valve is manually operated based on the detected value received by the receiver of the controller and determined by human visual inspection. You can adjust it with .

Furthermore, the location where the regulating flow path is connected is not limited to the location between the compressor outlet and the preheater inlet, but can be connected to any location in the gas supply flow path. For example, the same effect can be obtained even if the regulating flow path is connected to a portion between the turbine outlet and the incinerator inlet.

Alternatively, in the waste treatment equipment of the present invention, the flow rate of the oxygen-containing gas discharged from the compressor is taken out to the outside by the regulating flow path, and the flow rate of the oxygen-containing gas flowing into the incinerator is adjusted. The contained gas does not have to be taken out to the outside. Specifically, from the viewpoint of preventing heat loss, the removed oxygen-containing gas may be configured to join the gas supply channel again. For example, the waste treatment equipment of the present invention may be equipped with a regulating channel for regulating the flow rate of oxygen-containing gas discharged from the compressor and flowing into the incinerator or turbine in the gas supply channel. The regulation flow path is a flow path such as the adjustment flow path (or extraction flow path or discharge flow path) that takes out a part of the oxygen-containing gas to the outside and adjusts the flow rate of the oxygen-containing gas flowing into the incinerator. It includes not only a passage but also a passage in which a part of the oxygen-containing gas is supplied back into the gas supply passage without being taken out to the outside. Similar effects can be achieved even with the configuration of the regulating flow path in such waste treatment equipment. In other words, after the waste is input and the flow rate adjustment rate (flow rate of oxygen-containing gas flowing through the adjustment channel/flow rate of oxygen-containing gas passing through the compressor) becomes larger than the preset flow rate adjustment rate setting value. By stopping the gas supply section, the gas supply section can be stopped while the operation of the supercharger is reliably stable.

Furthermore, in the waste treatment equipment of the present invention, in the first to fifth embodiments described above, the introduction of waste is started after the temperature T1 of the sand layer in the incinerator 10 exceeds the in-furnace temperature set value Tα. Although the embodiment in which the waste input device 20 is controlled has been described, the in-furnace temperature set value Tα does not necessarily have to be set. For example, the waste input device may be controlled so as to start inputting waste after a predetermined time has elapsed after igniting the main burner of the incinerator and starting the oil gun.

When the waste treatment equipment of the present invention includes a heating section, the time when the operation of the gas supply section is stopped and the time when the operation of the heating section is stopped does not matter before or after. Specifically, in the first embodiment described above, the fuel pump 72 is stopped and the burner 71 is extinguished (the heating section 70 is stopped), and then the blower 61 is stopped (the gas supply section 60 is stopped). However, this order is not limited. Specifically, for example, after the temperature T3 of the oxygen-containing gas at the inlet of the turbine is equal to or higher than the above-mentioned preset turbine inlet gas temperature setting value Tγ, and there is no longer a need to supply heated oxygen-containing gas, When the gas supply section 60 is stopped for the first time, the same effects as in the first embodiment described above are achieved. Therefore, after the fuel supply amount to the burner 71 satisfies the lower limit value, the gas supply section 60 may be stopped, and then the heating section 70 may be stopped.

Furthermore, when starting up the waste treatment facility, in the first to fifth embodiments described above, the flow rate adjustment control A and the flow rate adjustment control B are performed. This is an example of control for stabilizing the flow rate F1 more reliably. Therefore, these flow rate adjustment controls may be used as appropriate, and other control methods, equipment, etc. (devices such as additional flow rate adjustment valves placed at other appropriate positions) may be used. The supply flow rate F1 may be stabilized.

Alternatively, in the first to fifth embodiments described above, when starting up the waste treatment equipment, the supply flow rate F1 of the oxygen-containing gas flowing into the sand layer of the incinerator 10 is set to the supply flow rate setting value F0 (or a value close to it). Flow rate adjustment control was performed by adjusting the opening degrees of the second flow rate adjustment valve V3 and the opening/closing valve V6, but the supply flow rate setting value F0 (or a value close to it) was not only a predetermined reference value, but also a value based on the waste treatment equipment. The amount may be within the supply flow rate setting range, which has a width within a predetermined range that is set in advance to ensure stable operation.

Furthermore, when starting up the waste treatment facility of the present invention, when switching the compressor outlet and the turbine inlet from a flow path blocked state to a flow path connected state, an index for the switching can be set as appropriate. For example, in the above-described Embodiments 1 to 3 and 5, the index for opening the switching valve V1 was determined by the temperature T2 of the oxygen-containing gas at the outlet of the preheater 40 or the rotation speed RT (rpm) of the turbine 32; Any index may be used as long as it is determined and set that stable operation of the machine 30 is possible. For example, in another embodiment, the supply flow rate F1 of the oxygen-containing gas flowing into the incinerator is within a predetermined range, and if the temperature in the incinerator increases first, the temperature is within a preset range. It can be determined that a predetermined temperature has been reached, or that the temperature of the oxygen-containing gas flowing into the turbine has reached a predetermined temperature, particularly when a heating section is provided. Note that even if the waste treatment equipment 1C is configured without a switching unit as in the fourth embodiment described above, it is determined that stable operation of the supercharger 30 is possible under the same conditions and the process proceeds to the next step. You can move on.

Further, in the first and second embodiments described above, in the flowchart, after the step (step ST107) in which waste is started to be input into the incinerator 10, whether or not the amount of fuel supplied to the burner 71 has reached the lower limit value is determined. (and if necessary, whether or not the combustion gas supply amount has reached the lower limit value) has been described (step ST108). There may be a step of determining whether the temperature T3 of the oxygen-containing gas at the inlet of the turbine is equal to or higher than the turbine inlet gas temperature set value Tγ. In the case of such an embodiment, it can be determined more reliably that the amount of heating of the oxygen-containing gas required by the burner 71 is smaller.

Furthermore, in the first to third and fifth embodiments described above, the control in the controller 80 is divided into operation control related to the connection of the supercharger 30 and operation control related to the incinerator 10 until the waste input is started. Although the embodiment has been described, these may be performed in an embodiment in which operation control is performed in a series of steps. For example, after the step of switching to the channel connected state by adjusting the opening degree, a step of determining whether the temperature T1 of the sand layer existing in the fluidized bed is equal to or higher than Tα may be performed. Or vice versa. The ignition of the main burner of the incinerator and the activation of the oil gun may also be performed at appropriate and preferable times. In other words, the embodiment may be such that the waste is started to be introduced into the incinerator after the condition for the flow path connection state and preferably the condition for the temperature inside the furnace are satisfied. Note that if the waste treatment equipment is configured without a switching unit as in the fourth embodiment described above, the conditions for determining that the turbocharger is in a stable operating condition are preferably the conditions for the furnace temperature. An embodiment may be adopted in which the waste is started to be input into the incinerator after the incinerator is filled.

Furthermore, as in the third to fifth embodiments described above, if the waste treatment equipment is configured without a heating section, stable operation of the supercharger becomes possible over time after the waste is input. That is, after the temperature of the oxygen-containing gas at the inlet of the turbine or the temperature of the oxygen-containing gas at the outlet of the preheater reaches the aforementioned Tγ (a preset temperature appropriate as the temperature of the oxygen-containing gas flowing into the incinerator 10). The flow rate adjustment control A may be ended and the flow rate adjustment control B may be started after the temperature reaches a temperature higher than the above temperature.

Further, in the first to fifth embodiments described above, the operation control of the waste treatment equipment is automatically controlled by the controller 80, but it may be manually controlled. For example, if one or more of the switching unit control unit 85 and the opening/closing valve opening control unit 87 in the first to third and fifth embodiments described above are not provided, it is possible to detect the human body from each detection value received by the receiving unit 81. The opening and closing of the switching valve V1, the first flow rate adjustment valve V2, and the on-off valve V6 may be manually controlled by visual inspection or the like.

Alternatively, in other embodiments, the waste treatment equipment 1 may further include an additional branch channel and a flow rate regulating valve in the gas supply channel L1, in addition to those shown in the first to fifth embodiments described above. For example, the gas supply channel may further include a branched exhaust flow path and a flow rate adjustment valve provided in the exhaust flow path near the inlet of the incinerator. By further providing such an exhaust flow path and a flow rate adjustment valve, it is possible to not only respond to gas flow rate fluctuations and pressure fluctuations near the incinerator entrance after waste input starts, but also to adjust the flow rate accordingly. It is also possible to adjust the flow rate using a regulating valve.

In the first to fifth embodiments described above, sewage sludge was explained as an example of waste, but the present invention is not limited to this, and the waste treatment equipment of the present invention can be used for incineration of other waste such as municipal garbage. may be applied.

Further, in the first to fifth embodiments described above, an example was described in which the blower 61, the first blower 61A, and the second blower 61B are used as the gas supply unit 60, but the pressure increase that can supply oxygen-containing gas in the gas supply channel Any device may be used as long as it is a device.

Further, in the first to fifth embodiments described above, a fluidized bed incinerator was described as an example, but the present invention is not limited to this, and a fixed bed incinerator may be used.

The embodiments disclosed herein are illustrative in all respects and should be understood not to be restrictive. The scope of the present invention is indicated by the claims rather than the above description, and it is intended that all changes within the meaning and range equivalent to the claims are included.

1, 1A, 1B, 1C, 1D Waste treatment equipment 10 Incinerator 11 Fluidized bed 12 Freeboard 20 Waste input equipment 30 Supercharger 31 Compressor 32 Turbine 33 Connection section 40 Preheater 50 Switching section 60 Gas supply section 61 Blower 61A First blower 61B Second blower 70 Heating section 71 Burner 72 Fuel pump 80 Controller 81 Receiving section 82 Judgment section 83 Waste input device control section 84 Gas supply section control section 85 Switching section control section 86 Heating section control section 87 Opening/closing valve Opening control section 101 Main burner 102 Oil gun

Claims (13)

A waste treatment facility that processes waste,
an incinerator that burns the waste;
a waste input device that inputs the waste into the incinerator;
A supercharger including a compressor that compresses oxygen-containing gas, and a turbine connected to the compressor and capable of driving the compressor by driving the turbine itself in response to supply of the oxygen-containing gas;
a preheater that heats the oxygen-containing gas by exchanging heat between the oxygen-containing gas discharged from the compressor and the exhaust gas discharged from the incinerator;
At least a part of the flow path in the upstream portion of the compressor, the compressor, the preheater, the turbine, and the incinerator are connected in this order, and the oxygen-containing gas sucked from upstream of the compressor is supplied to the incinerator. a gas supply channel;
a gas supply unit capable of supplying oxygen-containing gas to the gas supply channel;
a waste input device control unit that controls the waste input device to start inputting the waste after the gas supply unit is driven and thereby the turbine is driven;
A waste treatment facility, comprising: a gas supply unit control unit that controls the gas supply unit so that the gas supply unit stops operating after the waste is input. The waste treatment equipment is provided with a regulating channel that adjusts the flow rate of the oxygen-containing gas discharged from the compressor and flowing into the incinerator or the turbine in the gas supply channel, and the regulating channel. An on-off valve whose opening degree can be adjusted, and the opening degree of the on-off valve is controlled so that the supply flow rate of oxygen-containing gas flowing into the incinerator or the turbine is within a preset supply flow rate setting range. further comprising: an on-off valve opening degree control section;
The gas supply unit controller is configured such that a flow rate adjustment rate, which is a ratio of the flow rate of the oxygen-containing gas flowing through the adjustment flow path to the flow rate of the oxygen-containing gas passing through the compressor, is larger than a preset flow rate adjustment rate setting value. The waste treatment equipment according to claim 1, wherein the waste treatment equipment is configured to stop the gas supply unit after the gas supply unit has reached the point where the gas supply unit stops. The waste treatment equipment includes a switching unit that switches the gas supply flow path between a flow path cutoff state in which the compressor outlet and the turbine inlet are cut off and a flow path connection state in which the compressor outlet and the turbine inlet are connected. More prepared,
The gas supply unit is capable of supplying oxygen-containing gas to a portion of the gas supply flow path between the cutoff point in the flow path cutoff state and the turbine inlet,
The waste input device control unit is configured such that after the gas supply unit is driven, the flow path blocked state is switched to the flow path connected state, and the temperature inside the incinerator exceeds a furnace temperature set value. The waste treatment equipment according to claim 1 or 2, further comprising controlling the waste input device to start inputting the waste. The waste treatment equipment further includes a heating section that heats the oxygen-containing gas supplied from the gas supply section before it flows into the turbine,
The waste input device control unit is configured to drive the gas supply unit and the heating unit, switch the flow path blocked state to the flow path connected state, and adjust the temperature in the incinerator to the in-furnace temperature set value. 4. The waste treatment facility according to claim 3, wherein said waste input device is controlled to start inputting said waste after said waste is exceeded. The heating section includes a burner and a fuel supply flow path for supplying fuel to the burner,
The waste treatment equipment according to claim 4, further comprising a heating unit control unit that controls the heating unit to extinguish the burner before stopping the gas supply unit. The waste input device control unit starts the waste input speed at an initial input speed lower than a preset rated waste input speed setting value, and continues to The waste treatment equipment according to any one of claims 1 to 5, wherein the waste input device is controlled so as to increase the waste input speed as time passes. The waste input device control unit controls oxygen at the outlet of the preheater, which is a condition in which the gas supply unit is driven, thereby driving the turbine, and stable operation of the supercharger is possible. Starting to input the waste either after the temperature of the contained gas reaches a preset value or higher and after the rotation speed of the turbine reaches a preset rotation speed or higher. The waste treatment equipment according to any one of claims 1 to 6, which controls the waste input device. an incinerator that burns waste; a waste input device that inputs the waste into the incinerator; a compressor that compresses oxygen-containing gas; and an incinerator that is connected to the compressor and receives a supply of oxygen-containing gas. A supercharger including a turbine capable of driving the compressor by driving the turbine itself , and a supercharger that exchanges heat between the oxygen-containing gas discharged from the compressor and the exhaust gas discharged from the incinerator. A preheater for heating gas, a flow path in at least a part of the upstream portion of the compressor, the compressor, the preheater, the turbine, and the incinerator are connected in this order, and the oxygen-containing gas sucked from upstream of the compressor is connected in this order. A method for starting up a waste treatment facility, comprising: a gas supply channel for supplying gas to the incinerator;
driving the turbine by supplying oxygen-containing gas to the gas supply flow path using a gas supply unit;
After driving the turbine, starting to input the waste from the waste input device to the incinerator;
A method for starting up a waste treatment facility, including the step of stopping operation of the gas supply section after starting to input the waste. The waste treatment equipment includes a regulating channel that adjusts the flow rate of oxygen-containing gas discharged from the compressor and flowing into the incinerator or the turbine in the gas supply channel, and a regulating channel that is provided in the regulating channel and that is open. Furthermore, it is equipped with an on-off valve that can adjust the degree of
The method for starting up the waste treatment facility includes controlling the opening degree of the on-off valve so that the supply flow rate of oxygen-containing gas flowing into the incinerator or the turbine falls within a preset supply flow rate setting range. After adjusting the flow rate adjustment rate, which is a ratio of the flow rate of the oxygen-containing gas flowing through the regulating flow path to the flow rate of the oxygen-containing gas passing through the compressor, to become larger than a preset flow rate adjustment rate set value; The method for starting up a waste treatment facility according to claim 8 , further comprising the step of stopping the gas supply section. The method for starting up the waste treatment equipment includes changing from a flow path blocked state in which the compressor outlet and the turbine inlet in the gas supply flow path are shut off to a flow path connected state in which the compressor outlet and the turbine inlet are connected. further including the step of switching to
The step of driving the turbine is performed by supplying oxygen-containing gas to a portion of the gas supply flow path between the cutoff point in the flow path cutoff state and the turbine inlet,
9. The step of starting to input the waste is performed after the flow path is switched from the flow path blocked state to the flow path connected state and the temperature inside the incinerator exceeds a furnace temperature set value. Or the method for starting up the waste treatment facility described in 9 . The method for starting up a waste treatment facility according to any one of claims 8 to 10 , wherein the oxygen-containing gas supplied using the gas supply section is heated before flowing into the turbine. The waste input speed is started at an initial input speed that is lower than the preset rated waste input speed setting value, and until the waste rated input speed setting value is reached for the first time, the waste is The method for starting up a waste treatment facility according to any one of claims 8 to 11 , wherein the waste is introduced so as to increase the material input speed. After the temperature of the oxygen-containing gas at the outlet of the preheater reaches or exceeds a preset value, which is a condition for driving the turbine and enabling stable operation of the supercharger, Start-up of the waste treatment equipment according to any one of claims 8 to 12, wherein the inputting of the waste is started at any time after the rotation speed reaches a preset rotation speed or more. Method.

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