JP2021127851A - Waste disposal facility, and method of starting waste disposal facility - Google Patents

Abstract

To provide a waste disposal facility capable of quickly responding to fluctuation of a gas flow rate and fluctuation of a pressure at an inlet of an incineration furnace subsequent to starting charging of waste into an incineration furnace and of stably operating a supercharger, and a method of starting a waste disposal facility.SOLUTION: A waste disposal facility 1 comprises: an incineration furnace 10; a waste feeder 20; a supercharger 30 comprising a compressor 31 and a turbine 32; a preheater 40; a gas feed flow path L1; a gas feeder 60 capable of feeding oxygen-containing gas to the gas feed flow path; a waste-feeder controller that controls the waste feeder so as to start feeding of waste subsequent to starting the gas feeder; and a gas-feeder controller that controls the gas feeder so as to stop the operation of the gas feeder subsequent to feeding waste thereinto.SELECTED DRAWING: Figure 1

Description

The present invention relates to a waste treatment facility and a method for setting up a waste treatment facility.

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

The compressor compresses the air sucked in from the outside. The turbine is connected to the compressor 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, the air preheater, the turbine and the incinerator in this order. That is, the combustion air supply flow path is a flow path that guides the air discharged from the compressor to the incinerator as the combustion air necessary for incinerating the 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 the portion of the combustion air supply flow path between the compressor and the air preheater.

In the waste treatment facility described in Patent Document 1, air is supplied to the air preheater by the auxiliary blower at the time of start-up (starting), and the air discharged from the air preheater passes through the bypass flow path (turbine). It is supplied to the incinerator (bypassing). The reason for this is that when the waste treatment equipment is started up, the temperature of the exhaust gas flowing into the air preheater is not so high, so it is difficult to drive the turbine stably with the air discharged from the air preheater. be. Then, when the temperature of the air discharged from the air preheater rises to some extent, the turbine can be driven by the air, so that the bypass flow path is cut off and the air discharged from the air preheater is supplied to the turbine. Will be done. This drives the compressor. After that, when the temperature of the air discharged from the air preheater rises further and the supercharger becomes in a state where it can operate independently, the auxiliary blower is stopped.

Japanese Unexamined Patent Publication No. 2015-227748

In general, when the waste is put into the incinerator in a supercharged waste treatment facility, the supercharger can be operated independently (the compressor can be driven stably by the rotation of the turbine) when the facility is started up. It is performed in parallel with the process of (to be in a state of being), or after the supercharger is made to be able to operate independently. For example, in the waste treatment facility of Patent Document 1, a mode is described in which sludge is put into an incinerator in parallel with the process of making the supercharger self-sustaining at the time of starting the facility. An example of the latter is often the case where an arbitrary device such as a blower is connected to shorten the time required for the final self-sustaining operation of the turbocharger when starting up the equipment. In such a case, the supercharger is operated independently, all the connected blowers and other arbitrary devices are stopped, and then the waste is put into the incinerator.

The present inventors have started to put waste into the incinerator, which causes a sudden change in the incinerator environment due to combustion (for example, a change in pressure in the incinerator), and the outlet pressure of the turbine is increased accordingly. We focused on the problem that the flow rate of oxygen-containing gas entering the incinerator may decrease rapidly due to the rapid increase. If the outlet pressure and the outlet flow rate of the turbine fluctuate rapidly, the operating state of the turbocharger itself during and after the self-sustaining operation becomes unstable. Therefore, this problem is present in both the case where the waste is input in parallel with the process of making the turbocharger self-sustaining operation and the case where the waste is input after the supercharger is operated independently.

Such a phenomenon is particularly remarkable immediately after the start of waste input, and often continues until the waste input becomes stable. In such a case, when the equipment is provided with a flow path for taking out or discharging and a flow rate adjusting valve, it is possible to finely adjust the gas flow rate and pressure to some extent by appropriately adjusting the opening degree. However, depending on the amount of waste input and the performance of the incinerator used, it may not be possible to respond to gas flow rate fluctuations and pressure fluctuations only by adjusting the opening degree of the flow rate adjusting valve. Alternatively, in order to cope with such adjustment of flow rate and pressure fluctuations, when the equipment is started up, the equipment such as the blower that was driven when the turbocharger is operated independently is restarted. However, it requires equipment startup time and time to reach the desired flow rate and pressure. Therefore, there is a possibility that the operation of the turbocharger may become unstable, surging may occur, or the turbine may be stopped because the fluctuation adjustment cannot be made in time.

Therefore, the present invention can promptly respond to fluctuations in gas flow rate and pressure at the inlet of the incinerator after the start of charging waste into the incinerator, and can operate the supercharger in a stable manner. The purpose is to provide a method for setting up equipment and waste treatment equipment.

The waste treatment facility according to one aspect of the present invention is a waste treatment facility for treating waste, and is an incinerator that burns the waste and a waste input device that puts the waste into the incinerator. A supercharger including a compressor that compresses the oxygen-containing gas and a turbine that is connected to the compressor and can drive the compressor by receiving the supply of the oxygen-containing gas, and an oxygen-containing gas discharged from the compressor. A preheater that heats the oxygen-containing gas by exchanging heat with the exhaust gas discharged from the incinerator, and at least a part of the flow path of the upstream portion of the compressor, the compressor, the preheater, the turbine, and the above. The incinerators are connected in this order, and a gas supply flow path for supplying the oxygen-containing gas sucked from the upstream of the compressor to the incinerator and a gas supply unit capable of supplying the oxygen-containing gas to the gas supply flow path. The waste input device control unit that controls the waste input device so as to start the input of the waste after the gas supply unit is driven, and the gas supply after the waste is input. A gas supply unit control unit that controls the gas supply unit so that the unit stops operation is provided.

According to this waste treatment facility, the gas supply unit is driven, then the waste is put into the incinerator, and then the operation of the gas supply unit is stopped. Therefore, even if the gas flow rate and pressure difference suddenly fluctuate, especially near the incinerator inlet, after the start of waste injection into the incinerator, it can be used without restarting the gas supply unit. can. Then, it is possible to promptly respond so that the appropriate gas flow rate and pressure difference are obtained in the gas supply flow path, particularly in the vicinity of the incinerator inlet. As a result, the turbocharger can be operated stably.

Further, the waste treatment facility is provided in the control flow path for adjusting the 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 the control flow path. An on-off valve whose opening degree can be adjusted, and an on-off valve opening so that the supply flow rate of the oxygen-containing gas flowing into the incinerator or the turbine is within a preset supply flow rate setting range. The gas supply unit control unit further includes an on-off valve opening degree control unit for controlling the flow rate, which is a ratio of the flow rate of the oxygen-containing gas flowing through the control 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 the preset flow rate adjustment rate setting value.

According to this configuration, the gas supply unit can be stopped in a state where the operation of the turbocharger is surely stable.

Further, the waste treatment facility switches between a flow path cut-off state in which the compressor outlet and the turbine inlet are cut off in the gas supply flow path and a flow path connection state in which the compressor outlet and the turbine inlet are connected. Further, the gas supply unit is capable of supplying oxygen-containing gas to a portion of the gas supply flow path between the cut-off point in the flow path cut-off state and the turbine inlet, and the waste. After the gas supply unit is driven, the input equipment control unit is switched from the flow path cut-off state to the flow path connection state, and after the temperature in the incinerator exceeds the furnace temperature set value, the input equipment control unit is described. It may be configured to control the waste input device so as to start the input of waste.

According to this configuration, the oxygen-containing gas is supplied in the flow path cut-off state before the waste is charged. Therefore, at the time of starting up the equipment, it is possible to shorten the time until the supercharger is operated stably. Furthermore, the input waste can be effectively incinerated.

Further, the waste treatment facility further includes a heating unit that heats the oxygen-containing gas supplied from the gas supply unit before flowing into the furnace, and the waste input equipment control unit includes the gas supply unit and the gas supply unit. After the heating unit is driven, the flow path cut-off state is switched to the flow path connection state, and the temperature in the incinerator exceeds the furnace temperature set value, the charging of the waste is started. The waste input device may be controlled.

According to this configuration, the temperature of the oxygen-containing gas discharged from the preheater can be efficiently raised, so that the time until the supercharger is finally operated stably can be further shortened.

Further, in the waste treatment equipment, the heating unit has a burner and a fuel supply flow path for supplying fuel to the burner, and the waste treatment equipment stops the gas supply unit. In the front, a heating unit control unit that controls the heating unit so as to extinguish the burner may be further provided.

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 operated stably. Therefore, not only can the stable operation of the turbocharger be ensured, but also the fuel consumption of the burner can be reduced and excessive combustion can be avoided.

Further, in the waste treatment facility, the waste input equipment control unit starts the waste input speed at an initial input speed smaller than the preset waste rated input speed set value, and causes the waste charge input speed. Until the set value is reached for the first time, the waste input device may be controlled so as to increase the waste input rate with the passage of time.

According to this configuration, the gas flow rate fluctuation and pressure fluctuation at the incinerator inlet after the start of waste injection into the incinerator are as much as possible compared to the case where waste is input at the waste rated input speed from the start of waste input. It can be made smaller.

Further, the method of starting up the waste treatment facility according to another aspect of the present invention is to compress the incinerator that burns the waste, the waste input device that puts the waste into the incinerator, and the oxygen-containing gas. A supercharger including a compressor and a turbine connected to the compressor and capable of driving the compressor, and oxygen-containing gas discharged from the compressor and discharged from the incinerator. A preheater that heats the oxygen-containing gas by exchanging heat with the exhaust gas is connected to at least a part of the flow path of the upstream portion of the compressor, the compressor, the preheater, the turbine, and the incinerator in this order. This is a method of starting up a waste treatment facility including a gas supply flow path for supplying the oxygen-containing gas sucked from the upstream of the compressor to the incinerator, and the oxygen-containing gas is provided by using the gas supply unit. The step of driving the turbine by supplying the gas to the gas supply flow path, the step of starting the charging of the waste from the waste charging equipment to the incinerator after driving the turbine, and the above-mentioned This includes a step of stopping the operation of the gas supply unit after starting the input of waste.

According to this method of starting up the waste treatment facility, the turbine is driven by using the gas supply unit, and then the waste is put into the incinerator, and then the operation of the gas supply unit is stopped. Therefore, even when the introduction of waste into the incinerator is started and a sudden fluctuation occurs in the gas flow rate and the pressure difference particularly near the incinerator inlet, the gas supply unit can be used without restarting. Then, it is possible to promptly respond so that the appropriate gas flow rate and pressure difference are obtained in the gas supply flow path, particularly in the vicinity of the incinerator inlet. As a result, the turbocharger can be operated stably.

Further, the method of starting up the waste treatment facility is a regulated flow in which the waste treatment facility adjusts the flow rate of the oxygen-containing gas discharged from the compressor in the gas supply flow path and flows into the incinerator or the turbine. A passage and an on-off valve provided in the control flow path and capable of adjusting the opening degree are further provided, and the method of starting up the waste treatment facility is a method of starting up the oxygen-containing gas flowing into the incinerator or the turbine. The opening degree of the on-off valve is adjusted so that the supply flow rate is within the preset supply flow rate setting range, and the oxygen-containing gas flowing through the adjustment flow path with respect to the flow rate of the oxygen-containing gas passing through the compressor. After the flow rate adjustment rate, which is the ratio of the flow rate of the gas, becomes larger than the preset flow rate adjustment rate set value, the step of stopping the gas supply unit may be further included.

According to this method, the gas supply unit can be stopped in a state where the operation of the turbocharger is surely stable.

Further, the method of starting up the waste treatment facility is a flow path in which the compressor outlet and the turbine inlet are connected from a flow path cut state in which the compressor outlet and the turbine inlet are cut off in the gas supply flow path. The step of driving the turbine further includes a step of switching to a connected state by supplying an oxygen-containing gas to a portion of the gas supply flow path between the cut-off point in the flow path cut-off state and the turbine inlet. The step of starting the charging of the waste is performed after the flow path cutoff state is switched to the flow path connection state and the temperature in the incinerator exceeds the furnace temperature set value. May be good.

According to this method, the oxygen-containing gas is supplied in a state where the flow path is blocked before the waste is charged. Therefore, at the time of starting up the equipment, it is possible to shorten the time until the supercharger is operated stably. Furthermore, the input waste can be effectively incinerated.

Further, in the method of starting up the waste treatment facility, the oxygen-containing gas supplied by the gas supply unit 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 until the supercharger is finally operated stably can be further shortened.

Further, the waste input rate is started at an initial input rate smaller than the preset waste rated input rate set value, and until the waste rated input rate set value is reached for the first time, as time elapses. The waste may be charged so as to increase the waste charging rate.

According to this method, the gas flow rate fluctuation and pressure fluctuation at the incinerator inlet after the start of waste injection into the incinerator are as much as possible, as compared with the case where the waste is input at the waste rated input speed from the start of waste input. It can be made smaller.

As described above, according to the present invention, it is possible to quickly respond to fluctuations in gas flow rate and pressure at the inlet of the incinerator after the start of charging waste into the incinerator, and it is possible to operate the supercharger in a stable manner. It is possible to provide a waste treatment facility that can be used and a method for starting up the waste treatment facility.

It is a figure which shows typically the structure of the waste treatment equipment which concerns on Embodiment 1 of this invention. It is a figure which shows the operation control of the controller in the waste treatment equipment which concerns on Embodiment 1 of this invention. It is a flowchart which shows the control at the time of the start-up in the waste treatment equipment which concerns on Embodiment 1 of this invention. It is a figure which shows typically the structure of the waste treatment equipment which concerns on Embodiment 2 of this invention. It is a figure which shows typically the structure of the waste treatment equipment which concerns on Embodiment 3 of this invention. It is a flowchart which shows the control at the time of the start-up in the waste treatment equipment which concerns on Embodiment 3 of this invention. It is a figure which shows typically the structure of the waste treatment equipment which concerns on Embodiment 4 of this invention. It is a flowchart which shows the control at the time of the start-up in the waste treatment equipment which concerns on Embodiment 4 of this invention. It is a figure which shows typically the structure of the waste treatment equipment which concerns on Embodiment 5 of this invention.

Hereinafter, the waste treatment equipment according to the embodiment of the present invention will be described in detail with reference to the drawings.

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

The waste treatment facility 1 according to the first embodiment is a facility for incinerating 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 portion 33, and a preheater. It mainly includes 40, a gas supply flow path L1, a switching unit 50, a gas supply unit 60, a heating unit 70, a control flow path L6, an on-off valve V6, and a controller 80.

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 not shown in the figure. It is a thing. Hereinafter, each component of the waste treatment facility 1 will be described in detail.

The incinerator 10 incinerates waste such as sewage sludge, and is a fluidized bed incinerator. The incinerator 10 has a sand layer (fluidized sand) existing in the fluidized bed 11 at the bottom of the incinerator 10 and a free board 12 existing above the sand layer (fluidized sand). 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 to charge fuel (for example, heavy oil) in the sand layer in the incinerator 10. Is intermittently supplied to maintain a high temperature state. The high-temperature exhaust gas (G1) generated when the waste is incinerated in the incinerator 10 is introduced into the preheater 40 through the 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 intermittently or acceleratingly inputs waste into the incinerator 10 at a predetermined mass 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 or the like (not shown).

The gas supply flow path L1 is a path (pipe) that guides the oxygen-containing gas (A1) used for incinerating waste from the upstream portion of the compressor 31 to the incinerator 10, and is a flow path (pipe) of at least a part of the upstream portion of the compressor 31. The compressor 31, the preheater 40, the turbine 32 and the 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 combustion gas via the preheater 40 and the turbine 32. The oxygen-containing gas is, for example, outside air (atmosphere at room temperature in an outdoor space), and in this case, an intake port for taking in the oxygen-containing gas into the path is open to the outdoor space.

The compressor 31 of the turbocharger 30 is rotationally driven so as to compress the oxygen-containing gas containing oxygen. The turbine 32 is connected to the compressor 31 via a connecting portion 33, and the compressor 31 is rotationally driven by receiving the supply of the oxygen-containing gas and rotationally driving the turbine 32.

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 by a treatment facility arranged on the downstream side of the preheater 40.

The switching unit 50 switches the gas supply flow path L1 between a flow path cutoff state in which the compressor 31 outlet and the turbine 32 inlet are cut off and a flow path connection state in which the compressor 31 outlet and the turbine 32 inlet are connected. Switch. Specifically, the switching unit 50 includes a switching valve V1, an exhaust flow path L2, and a first flow rate adjusting valve V2 whose opening degree can be adjusted. In the flow path cutoff state, since the switching valve V1 is fully closed (blocking point) and the first flow rate adjusting valve V2 is fully open, the oxygen-containing gas discharged from the compressor 31 is sent to the turbine 32. It is in a state of not flowing. The flow path connection state is a state in which the oxygen-containing gas discharged from the compressor 31 flows to the turbine 32 because the switching valve V1 is fully open and the first flow rate adjusting valve V2 is fully closed. ..

The switching valve V1 is provided at a portion between the outlet of the oxygen-containing gas of the preheater 40 and the intermediate portion L1C to which the air flow path L3 of the gas supply unit 60 described later is connected. The closer the opening degree of the switching valve V1 is closed, the smaller the flow rate flowing from the compressor 31 outlet side to the turbine 32 inlet. As the switching valve V1, for example, a flow rate adjusting valve capable of adjusting the opening degree 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 oxygen-containing gas discharge port of the preheater 40 and the switching valve V1. The exhaust flow path L2 is a flow path for discharging the oxygen-containing gas discharged from the preheater 40 to the outside of the gas supply flow path L1. The first flow rate adjusting valve V2 is provided in the exhaust flow path L2. Therefore, by adjusting the opening degree of the first flow rate adjusting 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 the intermediate portion L1C, which is a portion between a portion of the gas supply flow path L1 that is shut off by the switching valve V1 and a portion where the burner 71, which will be described later, is provided. Specifically, the gas supply unit 60 includes a blower 61, a blower flow path L3, and a second flow rate adjusting valve V3 whose opening degree can be adjusted. The blower 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 adjusting valve V3 is provided in the air flow path L3. Therefore, by adjusting the opening degree of the second flow rate adjusting valve V3, the amount of oxygen-containing gas supplied from the blower 61 to the turbine 32 is adjusted.

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

The adjustment flow path L6 is a flow path for taking out a part of the oxygen-containing gas discharged from the compressor 31 from the portion between the compressor 31 outlet and the preheater 40 inlet in the gas supply flow path L1. .. The on-off valve V6 whose opening degree can be adjusted is provided in the adjusting 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 adjustment 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 facility 1 detects the flow rate sensor 91 that detects the supply flow rate F1 of the oxygen-containing gas flowing into the incinerator 10, and the flow rate F2 that flows between the outlet of the compressor 31 and the control flow path L6. The flow rate sensor 92, the flow rate sensor 93 for detecting the flow rate F3 flowing through the control flow path L6, the temperature sensor 94 for detecting the temperature T1 of the sand layer existing in the flow bed 11 in the incinerator 10, and the oxygen at the outlet of the preheater 40. A temperature sensor 95 for detecting the temperature T2 of the contained gas and a temperature sensor 96 for detecting 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 receiving unit 81, a determination unit 82, a waste input device control unit 83, a gas supply unit control unit 84, a switching unit control unit 85, a heating unit control unit 86, and an on-off valve opening degree. It is composed of a control unit 87.

The receiving unit 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 them to the determination unit 82.

The determination unit 82 determines whether or not the flow rate or temperature input from the reception unit 81 is equal to or higher than each set value stored in the storage memory in the determination unit 82, and determines whether or not the determination result is equal to or higher than each set value. Enter in.

The waste input device control unit 83 controls the waste input device 20. Specifically, the waste input equipment control unit 83 starts inputting waste into the incinerator 10 based on the determination result input from the determination unit 82 at the time of starting up the waste treatment equipment 1. Controls the waste input device 20. In particular, the blower 61 is operated, the fuel pump 72 is operated, the burner 71 is ignited (the gas supply unit 60 and the heating unit 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 exceeds the set value in the furnace temperature, the waste charging device 20 is controlled so as to start charging the waste.

The incinerator temperature set value in the incinerator 10 is a preset temperature for determining whether or not the waste can be incinerated when the waste is charged from the waste charging device 20. The set temperature may be set by using a temperature or the like at an arbitrary place in the incinerator 10 as an index, but in the first embodiment, the set temperature in the incinerator 10 existing in the fluidized bed 11 in the incinerator 10. 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 the operation of the blower 61 and the second flow rate adjusting valve based on the determination result input from the determination unit 82 at the time of starting up the waste treatment equipment 1. The opening degree of V3 is controlled. In particular, the gas supply unit 60 is controlled so as to close the opening degree of the second flow rate adjusting valve V3 and stop the operation of the blower 61 after the waste is charged.

In the first embodiment, the waste input device control unit 83 described above starts the waste input speed at an initial input speed smaller than the waste rated input speed set value after the start of waste input, and the waste input speed is increased. The waste input device 20 is controlled so as to increase the waste input rate with the passage of time until the set value of the waste rated input rate is reached for the first time. In other words, immediately after the start of waste charging, the charging speed is gradually increased over time, and the waste charging device 20 is controlled so that it finally reaches the waste rated charging speed set value and becomes constant. In this way, by controlling the waste input speed to be as slow as possible immediately after the waste input, compared with the case where the waste is input at a constant rate of the waste rated input rate set value immediately after the waste input. It is possible to minimize sudden changes in the environment due to combustion in the incinerator 10 immediately after the waste is charged.

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

The heating unit control unit 86 controls the heating unit 70. Specifically, when the waste treatment facility 1 is started up, the heating unit control unit 86 starts or stops the operation of the fuel pump 72, ignites or ignites the burner 71, based on the determination result input from the determination unit 82. It controls fire extinguishing, the opening degree of the third flow rate adjusting valve V4, and the opening degree of the fourth flow rate adjusting valve V5. Further, the heating unit 70 is controlled so as to extinguish the burner 71 before the waste input device 20 is started and 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 adjusting valve V4 and the opening degree of the fourth flow rate adjusting valve V5 to set the temperature T3 of the oxygen-containing gas at the inlet of the turbine 32 to the turbine inlet gas temperature. The supply amount of oxygen-containing gas and the fuel supply amount flowing into the burner 71 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, when T3 ≧ Tγ, in the first embodiment, the waste treatment facility 1 is operated stably while the supercharger 30 is operated without supplying the heated oxygen-containing gas by the heating unit 70. The waste can be burned properly in.

The on-off valve opening degree control unit 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 set value F0 indicates that the supercharger 30 can be stably operated (the compressor 31 can be stably driven by the rotation of the turbine 32) and the waste treatment is performed after the waste treatment facility 1 is started up. It is a preset supply flow rate value of the oxygen-containing gas required for stable operation of the equipment 1 itself.

The controller 80 mainly controls the operation of the switching unit 50, the waste input device 20, the gas supply unit 60, the heating unit 70, and the on-off valve V6 at the time of starting up the waste treatment equipment 1. The control in the controller 80 according to the first embodiment will be described with reference to the flowchart of FIG.

To control the start-up of the waste treatment equipment 1, the switching valve V1 is fully closed by the switching unit control unit 85, and the first flow rate adjusting valve V2 is fully opened, that is, the flow path is cut off in the gas supply flow path L1. Start in the state.

As shown in FIG. 3, until the start of waste charging, the operation control related to the connection of the turbocharger 30 and the operation control related to the incinerator 10 are performed separately.

First, operation control related to the connection of the supercharger 30 will be described.

As shown in FIG. 3, first, the flow rate adjustment control A by the second flow rate adjusting valve V3 is started (step ST101), the blower 61 is operated, the fuel pump 72 is operated, and the burner 71 is ignited (step). 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 the 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 is adjusted. If it is larger than the supply flow rate set value F0, the gas supply unit control unit 84 adjusts to lower the opening degree of the second flow rate adjusting valve V3, and if the supply flow rate F1 = the supply flow rate set value F0, the opening degree is adjusted. No. 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 the flow rate adjustment control A, the on-off valve V6 is not used. The opening degree of the on-off valve V6 is 0% while the flow rate adjustment control A is being performed. This is because the supply flow rate F1 can be maintained at a stable value and the supercharger 30 can be operated stably by adjusting the flow rate only by adjusting the opening degree of the second flow rate adjusting valve V3.

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

After that, when the condition for stable operation of the turbocharger 30 is satisfied by raising the temperature of the exhaust gas discharged from the incinerator 10 and entering the preheater 40, the switching valve V1 opens and the first flow rate The regulating valve V2 is controlled to close. In the first embodiment, whether or not the temperature sensor 95 (detected value of the temperature sensor 95) that detects the temperature T2 of the oxygen-containing gas at the outlet of the preheater 40 is equal to or higher than the preset preheater outlet gas temperature set value Tβ. (Step ST103), it is determined whether or not the condition is satisfied. When T2 is less than the preheater outlet gas temperature set value Tβ (NO in step ST103), the blower 61 and the like are appropriately adjusted and operated, and wait until the temperature rises to the preheater outlet gas temperature set value Tβ. On the other hand, when 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 degree of the switching valve V1 and the first flow rate adjusting valve V2. The state of the gas supply flow path L1 related to the connection of the turbocharger 30 is gradually switched from the flow path cutoff state to the flow path connection state.

At the time of switching, the pressure of the oxygen-containing gas discharged from the compressor 31 is set to be larger than the value obtained by adding a preset predetermined value to the pressure of the oxygen-containing gas at the point of the intermediate portion L1C. This is to prevent the oxygen-containing gas supplied from the gas supply unit 60 from flowing back from the intermediate unit L1C to the preheater 40 side. When the pressure of the oxygen-containing gas discharged from the compressor 31 is equal to or less than the value obtained by adding a preset predetermined value to the pressure of the oxygen-containing gas at the point of the intermediate portion L1C, the opening degree of the first flow rate adjusting 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 of having such a pressure difference, the opening degree of the switching valve V1 is controlled to 100% and the opening degree of the first flow rate adjusting valve V2 is controlled to 0% by the switching unit control unit 85 ( Step ST104).

Next, the operation control of the incinerator 10 will be described.

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

As a criterion for determining whether or not waste can be put into the incinerator 10, the temperature T1 of the sand layer existing in the fluidized bed 11 in the incinerator 10 (detected value of the temperature sensor 94) is the temperature set value Tα in the furnace (the value detected by the temperature sensor 94). It is determined whether or not it is equal to or higher than the set value of the temperature of the sand layer in the incinerator 10 (step ST106). That is, the incinerator temperature set value Tα is a preset temperature because it is determined that the incinerator can be incinerated even if the waste is put into the incinerator 10. When T1 is less than the furnace temperature set value Tα (NO in step ST106), the furnace temperature set value is kept running (and the main burner 101 is ignited if necessary). Wait until it rises to Tα.

After that, the opening degree of the switching valve V1 is controlled to 100%, the opening degree of the first flow rate adjusting valve V2 is controlled to 0%, the flow path connection state is completely switched (step ST104), and T1 is the temperature inside the furnace. When the set value becomes Tα or more (YES in step ST106), the waste input device 20 is controlled so as to start charging the waste into the incinerator 10 (step ST107).

When the waste input is started, a sudden change in the environment due to combustion in the incinerator 10 occurs, and a sudden change in the gas flow rate and the pressure difference occurs particularly near the inlet of the incinerator 10. However, in the first embodiment, at this point in time, the operation of the blower 61 (driving the gas supply unit 60) is still continuing. Therefore, the required gas flow rate can be supplied by using the blower 61 or the like while appropriately adjusting the blower 61 or the like so as to have an appropriate gas flow rate and pressure difference near the inlet of the incinerator 10.

As described above, in the first embodiment, the waste input speed increases with the passage of time from the start of waste input until the waste input speed reaches the waste rated input speed set value for the first time. The waste input device 20 is controlled.

After the waste charging device 20 is controlled so as to start charging the waste into the incinerator 10, the temperature of the exhaust gas discharged from the incinerator 10 rises as time elapses. 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 above-mentioned turbine inlet gas temperature set value Tγ, so that 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, the amount of fuel supplied to the burner 71 is preset 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. It gradually approaches the predetermined lower limit value. At this time, the supply amount of the combustion gas supplied to the burner 71 may also be reduced so as to approach a predetermined lower limit value set in advance. Specifically, the heating unit control unit 86 controls the opening degree of the third flow rate adjusting valve V4 (and the opening degree of the fourth flow rate adjusting valve V5, if necessary) so as to gradually close, and finally the burner 71. It is determined whether or not the fuel supply amount to the lower limit value has been reached (and whether or not the combustion gas supply amount has reached the lower limit value if necessary) (step ST108).

After the fuel supply amount to the burner 71 reaches the lower limit value (and the combustion gas supply amount is the lower limit value if necessary) (when YES in step ST108), the fuel pump 72 is stopped by the heating unit control unit 86. , The burner 71 is extinguished (step ST109). However, the fuel pump 72 and the burner 71 do not necessarily have to be stopped and extinguished at this point. For example, the fuel pump 72 and the 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 be kept running for a certain period of time even after the start of the flow rate adjustment control B. Specifically, the fuel pump 72 is from that time point to the time point when the flow rate control rate r becomes equal to or higher than the preset flow rate control rate set value r0, which will be described in detail later (when YES in step ST111). Should be stopped and the burner 71 should be extinguished. By stopping the operation of the fuel pump 72 and extinguishing the burner 71 at an appropriate time, it is possible to reduce the fuel consumption of the burner 71 while ensuring the stable operation of the turbocharger 30, and to overburn. Can also be avoided.

Next, the flow rate adjustment control A by the second flow rate adjusting valve V3 is terminated, and the flow rate adjusting control B by the on-off valve V6 and the second flow rate adjusting valve V3 is started (step ST110). The 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 and 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 control unit 87 reduces the opening of the on-off valve V6 (the flow rate adjustment rate r is Adjust so that the supply flow rate F1 is larger than the supply flow rate set value F0, so that the on-off valve opening control unit 87 increases the opening of the on-off valve V6 (so that the flow rate adjustment rate r increases). adjust. After these adjustments, or when the supply flow rate F1 = supply flow rate set value F0, when the flow rate adjustment rate r is less than the preset flow rate adjustment rate set value r0 described in detail later, the gas supply unit control unit 84 Adjusts to increase the opening degree of the second flow rate adjusting valve V3, and when the flow rate adjusting rate r is larger than the flow rate adjusting rate set value r0, the gas supply unit control unit 84 lowers the opening degree of the second flow rate adjusting valve V3. When the flow rate adjustment rate r = the flow rate adjustment rate set value r0, the opening degree is not adjusted. After that, the process returns to the determination of the supply flow rate F1 and the opening adjustment of the on-off valve V6, and the determination and the opening adjustment are repeated until the blower 61 is finally stopped and the flow rate adjustment control B is completed. .. 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 obtained by dividing the flow rate F3 (detected value of the flow rate sensor 93) flowing through the adjustment flow path L6 by the flow rate F2 (detected value of the flow rate sensor 92) flowing between the outlet of the compressor 31 and the adjustment flow path L6. Is calculated by multiplying by 100. That is, the larger the flow rate adjustment rate r is, the more the flow rate flowing from the upstream side to the downstream side, that is, the supply flow rate F1 can be increased. That is, if the flow rate control rate r is a large value, for example, when the supply flow rate F1 of the oxygen-containing gas flowing into the incinerator 10 becomes equal to or less than a preset predetermined value, the on-off valve opening degree control unit 87 By controlling the opening degree of the on-off valve V6 to be closed, the supply flow rate F1 can be increased. On the other hand, if the flow rate control rate r is a smaller value, the opposite is true.

As described above, while the flow rate adjustment control B is repeated, it is determined whether or not the flow rate adjustment rate r is equal to or greater than the preset flow rate adjustment rate set value r0 (greater than r0, less than r0, or It is determined whether they are equal) (step ST111). The flow rate control rate set value r0 is preferably set to a somewhat large value (for example, 50% to 80%). That is, it is preferable to set the value to 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 operation of the blower 61 is stopped. When the flow rate control rate r becomes equal to or higher than the preset flow rate control rate set value r0 (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 sufficiently increased, the blower 61 is finally controlled to be stopped by the gas supply unit control unit 84 (step ST112). This is because the value of the flow rate adjustment rate r becomes large due to the repetition of the flow rate adjustment control B, and when the flow rate adjustment rate r continues to be in the state of the flow rate adjustment rate set value r0 or more, the second flow rate adjustment valve V3 is opened. This is because the degree is controlled so as to gradually decrease. After that, the flow rate adjustment control B is terminated (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 the waste input is started. Therefore, after the start of waste injection, the blower 61 can be used in the gas supply flow path L1 and particularly in the vicinity of the incinerator 10 inlet so that the flow rate and pressure difference of the oxygen-containing gas can be adjusted promptly. As a result, the turbocharger 30 can be operated stably even after the start of waste injection.

Further, 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, the operation of the blower 61 can be stopped in a state where the operation of the supercharger 30 is surely stable. can. In addition, it is possible to avoid increasing the cost by continuing unnecessary operation of the blower 61.

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

The waste treatment facility 1A according to the second embodiment basically has the same configuration as the waste treatment facility 1 according to the above-mentioned first embodiment, and has the same function and effect. However, the waste treatment facility 1A is different from the above-described first embodiment in that the gas supply unit 60 mainly includes a plurality of blowers, specifically, the first blower 61A and the second blower 61B. Hereinafter, the points different from the above-described first embodiment will be mainly described.

As shown in FIG. 4, the gas supply unit 60 is provided with a burner 71 and 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. The oxygen-containing gas is supplied to the intermediate portion L1C', which is a portion between the portion and the inlet of the turbine 32.

Specifically, the gas supply unit 60 opens the first blower 61A, the air flow path L7, the fifth flow rate adjusting valve V7 whose opening degree can be adjusted, the second blower 61B, and the air flow path L8. It has a sixth flow rate adjusting valve V8 capable of adjusting the degree.

The blower flow path L7 is a flow path for supplying the oxygen-containing gas discharged by the first blower 61A to the burner 71. That is, during the ignition of the burner 71, the blower flow path L7 functions as a combustion gas supply flow path of the heating unit 70, and the first blower 61A functions as a combustion gas supply blower of 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 flow path L1. The fifth flow rate adjusting valve V7 is provided in the air flow path L7. By adjusting the opening degree of the fifth flow rate adjusting valve V7, the amount of oxygen-containing gas (combustion gas) supplied from the first blower 61A to the burner 71 is adjusted.

The blower 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 adjusting valve V8 is provided in the air flow path L8. By adjusting the opening degree of the sixth flow rate adjusting valve V8, the amount of oxygen-containing gas supplied from the second blower 61B to the turbine 32 is adjusted. Since the oxygen-containing gas discharged by the second blower 61B does not pass through the portion where the burner 71 is provided in the gas supply flow path L1, it flows into the turbine 32 without being heated.

In the waste input equipment control unit 83, when the waste treatment facility 1 is started up, the first blower 61A, the second blower 61B and the fuel pump 72 are operated, and the burner 71 is ignited (gas supply unit 60 and heating unit). 70 is driven), the flow path is switched from the flow path cut state to the flow path connection state, and after the temperature inside the incinerator 10 exceeds the furnace temperature set value Tα, the waste is charged so as to start the waste charging. Control the device 20.

Further, in the gas supply unit control unit 84, at the time of starting up the waste treatment facility 1, the flow rate adjustment rate r is adjusted after the waste is charged and the supply flow rate F1 is controlled to the supply flow rate set value F0. It suffices that at least one of the first blower 61A and the second blower 61B is controlled to stop operation for the first time when the rate set value r0 or more is reached. When the first blower 61A is stopped, the opening degree of the fifth flow rate adjusting valve V7 is controlled to be closed, and when the second blower 61B is stopped, the opening degree of the sixth flow rate adjusting valve V8 is adjusted. 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 be shut down for the first time, so that the waste input is started. Later, it can be used without restarting either or both blowers. As a result, it is possible to quickly respond to fluctuations in the flow rate of the oxygen-containing gas near the inlet of the incinerator 10 after the start of waste injection, and the supercharger 30 can be operated stably.

According to the waste treatment facility 1A of the second embodiment, the first blower 61A functions as a combustion gas supply blower during the ignition of the burner 71, so that the temperature of the oxygen-containing gas discharged from the preheater 40 is more efficient. Finally, the time until the supercharger 30 is stably operated can be shortened. Further, according to the waste treatment facility 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 and type of each blower can be appropriately adjusted and selected. can. Therefore, it is possible to start up with more preferable and stable operation control according to the specific configuration of the waste treatment facility 1A.

In the waste treatment facility 1A of the second embodiment, the location of the intermediate portion L1C'of the gas supply flow path L1 to which the blower flow path L8 is connected for supplying the oxygen-containing gas discharged by the second blower 61B is , The portion between the portion where the burner 71 shown in FIG. 4 is provided and the inlet of the turbine 32 is not limited. Specifically, if it is a portion between the turbine 32 inlet and the switching valve V1, for example, it is on the upstream side closer to the switching valve V1 than the location where the burner 71 is provided. It doesn't matter.

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

(Embodiment 3)
In the above-described first and second embodiments, the heating unit 70 is provided, but the effect according to the present invention can be obtained even if the heating unit 70 is omitted. When the heating unit 70 is omitted, the heating unit control unit 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. Hereinafter, the points different from the above-described first embodiment will be mainly described.

In the waste input equipment control unit 83, when the waste treatment facility 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 cutoff state to the flow path connection state, and the incinerator is incinerated. After the temperature in the furnace 10 exceeds the set value Tα in the furnace temperature, the waste charging device 20 is controlled so as to start charging the waste. In the gas supply unit control unit 84, at the time of starting up the waste treatment facility 1B, after the waste is charged, the flow rate adjustment rate r is set to the flow rate adjustment rate while the supply flow rate F1 is controlled to the supply flow rate set value F0. The blower 61 is controlled to be stopped for the first time when the value r0 or more is reached.

The control in the controller 80 according to the third embodiment is shown in the flowchart of FIG. It is significantly different from the above-described first embodiment in that there is no operation control (operation control regarding the heating unit 70) related to the operation of the fuel pump 72 and the ignition of the burner 71.

First, in the control of starting up the waste treatment equipment 1B, as in the first embodiment, the switching valve V1 is fully closed by the switching unit control unit 85, and the first flow rate adjusting valve V2 is fully opened. It is started in the flow path cut-off state on the road L1.

First, the flow rate adjustment control A by the second flow rate adjusting valve V3 was started (step ST201), and by operating the blower 61 in a state where the gas supply flow path L1 was cut off (step ST202), the turbine 32 became stable. Supply an amount of oxygen-containing gas. Therefore, the turbine 32 can be stably rotationally driven at the time of starting up the waste treatment facility 1B. The flow rate adjustment control A is as described in the first embodiment. Further, in the third embodiment, as shown in step ST203, the turbine rotation speed set value RTδ in which the rotation speed RT (rpm) of the turbine 32 is preset is a condition for enabling stable operation of the turbocharger 30. Judgment is made based on whether or not it is (rpm) or higher.

When the rotation speed RT of the turbine 32 is less than the turbine rotation speed set value RT δ (NO in step ST203), the blower 61 is appropriately adjusted and operated, and waits until the turbine rotation speed set value RT δ is reached. On the other hand, when the rotation speed RT is equal to or higher than the turbine rotation speed set value RTδ (YES in step ST203), the switching unit control unit 85 controls the opening degree of the switching valve V1 and the first flow rate adjusting valve V2. The state of the gas supply flow path L1 related to the connection of the feeder 30 is gradually switched from the flow path cutoff state to the flow path connection state. Finally, the opening degree of the switching valve V1 is controlled to 100%, and the opening degree of the first flow rate adjusting 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 of the incinerator 10 and the determination of the temperature T1 of the sand layer in the incinerator 10 in step ST206 are determined in steps ST105 and ST106 in the above-described first embodiment. Is similar to.

Then, after satisfying the same conditions as in the first embodiment, the waste input device 20 is controlled in step ST207 so that the input of waste is started.

After the waste input device 20 is controlled so that the input of waste is started in step ST207, the flow rate adjustment control A by the second flow rate adjusting valve V3 is terminated, and the on-off valve V6 and the second flow rate adjusting valve V3 are used. The 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 the first embodiment, while the flow rate adjustment control B is repeated, the supply flow rate F1 is controlled to the supply flow rate set value F0 (or a value close to it), and the value of the flow rate adjustment rate r gradually increases. Becomes larger. When the flow rate control rate r becomes the flow rate control rate set value r0 or more (YES in step ST209), that is, when the supply flow rate F1 can be sufficiently increased, the blower 61 is finally operated as well. It is controlled to stop (step ST210). After that, the flow rate adjustment control B is terminated (step ST211).

(Embodiment 4)
In the above-described first to third embodiments, the switching unit 50 for switching the connection state between the preheater 40 outlet and the turbine 32 inlet in the gas supply flow path L1 is provided, but the present invention can be omitted even if the switching unit 50 is omitted. Can produce the effect of. When the switching unit 50 is omitted, the switching unit control unit 85 in the controller 80 that controls its operation can also be omitted. Further, in this case, the location where the oxygen-containing gas is supplied by the gas supply unit 60 is not limited to the portion between the cutoff point in the flow path cutoff state and the turbine 32 inlet, and the compressor 31 in the gas supply flow path L1. It may be supplied to any place from the flow path of the upstream portion 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, the points different from the above-described third embodiment will be mainly described.

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

In the waste input equipment control unit 83, when the waste treatment facility 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 furnace temperature set value Tα. After that, the waste input device 20 is controlled so as to start the input of waste. In the gas supply unit control unit 84, when the waste treatment facility 1C is started up, the flow rate control rate r is the flow rate control rate set value r0 while the waste is charged and the supply flow rate F1 is controlled to the supply flow rate set value F0. In addition, the blower 61 is controlled to be stopped for the first time when the opening degree of the intake valve V9 is 100%.

The control in the controller 80 according to the fourth embodiment is shown in the flowchart of FIG. It is different from the above-described third embodiment in that the opening degree adjustment of the switching valve V1 and the first flow rate adjusting valve V2 does not exist, and the flow rate adjusting control C by the intake valve V9 exists.

First, the flow rate adjustment control A by the second flow rate adjusting valve V3 is started (step ST301), and at the same time, the flow rate adjusting control C by the intake valve V9 is started (step ST302). The details of the flow rate adjustment control C will be described later, but at the start of the flow rate adjustment control C, 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 stably rotationally driven at the time of starting up the waste treatment facility 1C. Next, it is determined whether or not the rotation speed RT (rpm) of the turbine 32 is equal to or higher than the preset turbine rotation speed set value RTδ (rpm) (step ST304). When the rotation speed RT of the turbine 32 is less than the turbine rotation speed set value RT δ (NO in step ST304), the blower 61 is appropriately adjusted and operated, and waits until the turbine rotation speed set value RT δ is reached. The ignition of the main burner 101 and the activation of the oil gun 102 in step ST305 of the operation control of the incinerator 10 and the determination of the temperature T1 of the sand layer in the incinerator 10 in step ST306 are determined in steps ST205 and ST206 in the above-described third embodiment. Is similar to.

After that, when the flow rate RT is equal to or higher than the turbine rotation rate set value RTδ (YES in step ST304), and the temperature T1 of the sand layer in the incinerator 10 becomes equal to or higher than the furnace temperature set value Tα (in step ST306). (YES), in step ST307, the waste input device 20 is controlled so that the input of waste is started, the flow rate adjustment control A by the second flow rate adjusting valve V3 is terminated, and the on-off valve V6 and the second flow rate are started. The flow rate adjustment control B by the adjustment valve V3 is started (step ST308). After that, in the same manner as in the third embodiment, in step ST309, the flow rate adjustment rate r waits until the flow rate adjustment rate set value r0 or more.

Here, the flow rate adjustment control C by the intake valve V9 in the above-mentioned step ST302 means an operation control in which the determination of the suction pressure P at the inlet of the compressor 31 and the opening degree adjustment 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 equal to or less than 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. If it is larger than that, wait until the suction pressure set value P0 is lowered. When the opening degree of the intake valve V9 becomes 100% by repeating the flow rate adjustment control C (when 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 over the entire gas supply flow path L1. After that, the flow rate adjustment control C is terminated (step ST311).

In the fourth embodiment, when the flow rate adjustment control C is completed and the flow rate adjustment rate r is equal to or higher than the flow rate adjustment rate set value r0 (YES in step ST309), finally, the blower 61 is also It is controlled to stop the operation (step ST312). After that, the flow rate adjustment control B is terminated (step ST313).

(Embodiment 5)
In the above-described third embodiment, the switching unit 50 and the gas supply unit 60 are sequentially provided in the gas supply flow path L1 between the preheater 40 outlet and the turbine 32 inlet, but the compressor 31 outlet and the preheater 40 inlet are provided in this order. Even if the switching unit 50 and the gas supply unit 60 are provided in order in the gas supply flow path L1 between them, the effect according to the present invention can be obtained. 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 of FIG.

(Other embodiments)
In the waste treatment equipment of the present invention, in the above-described first to fifth embodiments, the control flow path L6, the on-off valve V6, and the on-off valve opening degree control unit 87 are provided, but these are finally the supercharger 30. It is a component for stopping the gas supply unit 60 in a state where the operation is surely stable, and it does not have to be provided. Specifically, when the waste treatment facility does not include a control flow path, an on-off valve, and an on-off valve opening control unit, for example, in the gas supply unit control unit, a blower or the like is gradually introduced after the waste is charged. The gas supply unit is appropriately controlled so as to stop the operation. Alternatively, for example, the gas supply unit control unit satisfies the preset conditions for determining that the turbocharger can be stably operated even if the oxygen-containing gas is not supplied after the waste is charged. For the first time, the gas supply unit may be controlled to stop operation. The preset condition for determining that the turbocharger can be operated stably even without the supply of the oxygen-containing gas is a configuration in which the heating unit is not provided as in the above-described third to fifth embodiments. The case may differ from the case where the configuration is provided with a heating unit as in the above-described first and second embodiments. The details will be described below.

In the case of the configuration not provided with the heating unit as in the above-described embodiments 3 to 5, the preset conditions for determining that the turbocharger can be stably operated even if the oxygen-containing gas is not supplied are set in advance. For example, when the temperature of the oxygen-containing gas at the turbine inlet after the waste is charged exceeds the preset turbine inlet gas temperature set value Tγ, the supply flow rate F1 after the waste is charged is described above. When the value exceeds the supply flow rate set value F0, the turbine rotation speed RT after waste injection exceeds the above-mentioned turbine rotation speed set value RT δ, or when these are combined, etc. Can be mentioned. Further, in the configuration without the heating unit, the oxygen-containing gas supplied to the incinerator is not heated, so that the temperature of the oxygen-containing gas at the inlet of the turbine and the temperature of the oxygen-containing gas at the outlet of the preheater are the same. 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 the waste is charged becomes a value exceeding the preset turbine inlet gas temperature set value Tγ described above. If this is the case, the preset conditions may be used. The gas supply unit such as a blower may be controlled to stop the operation only after these conditions are satisfied.

On the other hand, in the case of the configuration including the heating unit as in the above-described first and second embodiments, the preset conditions for determining that the turbocharger can be stably operated even if the oxygen-containing gas is not supplied. Can vary depending on whether the heating unit is driven or not. When the heating unit is driven, the preset conditions for determining that the turbocharger can operate stably even without the supply of the oxygen-containing gas are, for example, the oxygen at the inlet of the turbine after the waste is charged. 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 the waste is charged becomes a value exceeding the supply flow rate set value F0 described above. If so, the turbine rotation speed RT after the waste is charged may be a value higher than the above-mentioned turbine rotation speed set value RT δ or more, or a combination of these may be mentioned. The gas supply unit such as a blower may be controlled to stop the operation only after these conditions are satisfied.

Even in the configuration including the heating unit as in the above-described first and second embodiments, when the heating unit is not driven and is stopped, the turbocharger is stable even if the oxygen-containing gas is not supplied. The preset conditions for determining that the operation is possible are the same as in the case where the above-mentioned heating unit is not provided. That is, the preset condition for determining that the turbocharger can be stably operated even if the oxygen-containing gas is not supplied is, for example, the temperature of the oxygen-containing gas at the inlet of the turbine after the waste is charged. When the value exceeds the preset turbine inlet gas temperature set value Tγ, and when the supply flow rate F1 after the waste charge exceeds the above-mentioned supply flow rate set value F0, after the waste charge. Examples thereof include a case where the turbine rotation speed RT is a value higher than the above-mentioned turbine rotation speed set value RT δ or more, or a case where these are combined. Further, when the heating unit is not driven and is stopped, the oxygen-containing gas supplied to the incinerator is not heated as in the case where the heating unit is not provided, so that the gas at the inlet of the turbine is not heated. Instead of the temperature of the oxygen-containing gas, the case where the temperature of the oxygen-containing gas at the outlet of the preheater after the waste is charged exceeds the preset turbine inlet gas temperature set value Tγ described above is set in advance. The conditions may be set. The gas supply unit such as a blower may be controlled to stop the operation only after these conditions are satisfied.

The gas supply unit such as the blower is controlled to stop the operation only after the preset conditions as described above are satisfied, so that the gas flow rate and the pressure difference in the vicinity of the incinerator inlet immediately after the waste is charged are sudden. It is possible to respond promptly to fluctuations, and the supercharger can be operated stably even after that. Alternatively, although the control flow path and the on-off valve are still provided, the on-off valve opening control unit is not provided, and the on-off valve is manually operated by visually determining from the detection value received by the receiving unit of the controller. You can adjust with.

Further, the place where the adjustment flow path is connected is not limited to the part between the compressor outlet and the preheater inlet, and can be connected to any place in the gas supply flow path. For example, the control flow path has the same effect even if it is connected to a portion between the turbine outlet and the incinerator inlet.

Alternatively, in the waste treatment facility of the present invention, the mode in which the flow rate of the oxygen-containing gas discharged from the compressor through the control flow path is taken out to the outside and the flow rate of the oxygen-containing gas flowing into the incinerator is adjusted has been described. The contained gas does not have to be taken out to the outside. Specifically, from the viewpoint of preventing heat loss, the extracted oxygen-containing gas may be configured to rejoin the gas supply flow path. For example, the waste treatment equipment of the present invention may be provided with a control flow path that regulates the flow rate of oxygen-containing gas discharged from the compressor and flowing into the incinerator or turbine in the gas supply flow path. The control flow path is a flow rate such as a control flow path (or an take-out flow path or a discharge flow path) that regulates the flow rate of the oxygen-containing gas that takes out a part of the oxygen-containing gas to the outside and flows into the incinerator as described above. Not only the path, but also a channel in which a part of the oxygen-containing gas is supplied into the gas supply channel again without being taken out to the outside is included. The same effect can be obtained even with the configuration of the control flow path in such a waste treatment facility. That is, after the waste is charged and the flow rate control rate (flow rate of oxygen-containing gas flowing through the control flow path / flow rate of oxygen-containing gas passing through the compressor) becomes larger than a preset flow rate control rate set value. By stopping the gas supply unit, the gas supply unit can be stopped in a state where the operation of the compressor is surely stable.

Further, in the waste treatment facility of the present invention, in the above-described first to fifth embodiments, the waste is started to be charged after the temperature T1 of the sand layer in the incinerator 10 exceeds the temperature set value Tα in the furnace. Although the mode for controlling the waste input device 20 has been described, the incinerator temperature set value Tα may not necessarily be set. For example, the waste input device may be controlled so that the input of waste is started after a predetermined time has elapsed after the ignition of the main burner of the incinerator and the activation of the oil gun.

When the waste treatment facility of the present invention is provided with a heating unit, the time when the operation of the gas supply unit is stopped and the time when the operation of the heating unit is stopped may be before or after. Specifically, in the above-described first embodiment, the fuel pump 72 is stopped, the burner 71 is extinguished (the heating unit 70 is stopped driving), and then the blower 61 is stopped (the gas supply unit 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 preset turbine inlet gas temperature set value Tγ described above and it is no longer necessary to supply the heated oxygen-containing gas. When the gas supply unit 60 is stopped for the first time, the same effect as that of the above-described first embodiment is obtained. Therefore, after satisfying that the fuel supply amount to the burner 71 is the lower limit value, the operation of the gas supply unit 60 may be stopped, and then the heating unit 70 may be stopped.

Further, in the above-described first to fifth embodiments, the flow rate adjustment control A and the flow rate adjustment control B are performed when starting up the waste treatment facility. However, these flow rate adjustment controls are supplied in the gas supply flow path L1. This is an example of control for more reliably stabilizing the flow rate F1. Therefore, these flow rate adjustment controls may be appropriately used as needed, and other control methods, devices, etc. (equipment such as additional flow rate control valves arranged at other appropriate positions) may be used. The supply flow rate F1 may be stabilized.

Alternatively, in the above-described embodiments 1 to 5, when starting up the waste treatment facility, 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 set value F0 (or a value close to it). The flow rate adjustment control was performed by adjusting the opening degree of the second flow rate adjusting valve V3 and the on-off valve V6, but the supply flow rate set value F0 (or a value close to it) is not only a predetermined reference value but also a waste treatment facility. The amount may be within the supply flow rate setting range having a predetermined range width set in advance so that stable operation can be performed.

Further, when the compressor outlet and the turbine inlet are switched from the flow path cut-off state to the flow path connection state in the start-up of the waste treatment facility of the present invention, the index of the switching can be appropriately set. For example, in the above-described first to third and fifth embodiments, the index for opening the switching valve V1 is 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, but supercharging. Any index may be used as long as it is determined that stable operation of the machine 30 is possible and the conditions are set. For example, in another embodiment, the supply flow rate F1 of the oxygen-containing gas flowing into the incinerator is within a predetermined range set in advance, and if the temperature in the incinerator rises first, the temperature is set in advance. It is possible that the temperature has reached a predetermined temperature, particularly that the temperature of the oxygen-containing gas flowing into the furnace has reached a preset predetermined temperature when the heating unit is provided. Even if the waste treatment facility 1C does not have a switching unit as in the fourth embodiment, it is determined that stable operation of the turbocharger 30 is possible under the same conditions, and the process proceeds to the next step. You can proceed with.

Further, in the above-described first and second embodiments, whether or not the fuel supply amount to the burner 71 has reached the lower limit value after the step (step ST107) in which the input of waste into the incinerator 10 is started in the flowchart. Although the mode (step ST108) for determining (and whether or not the combustion gas supply amount has reached the lower limit value as necessary) is performed, the turbine 32 is between the step ST107 and the step ST108. There may be a step of determining whether or not the temperature T3 of the oxygen-containing gas at the inlet of the turbine is equal to or higher than the set value Tγ of the gas temperature at the inlet of the turbine. In the case of such an embodiment, it can be more reliably determined that the heating amount of the oxygen-containing gas required by the burner 71 is small.

Further, in the above-described embodiments 1 to 3 and 5, the control in the controller 80 is divided into an operation control related to the connection of the turbocharger 30 and an operation control related to the incinerator 10 until the waste charging is started. Although the embodiments described above have been described, these may be performed in the embodiments in the operation control of a series of steps. For example, after the step of switching to the flow path connection state by adjusting the opening degree, a step of determining whether or not the temperature T1 of the sand layer existing in the fluidized bed is Tα or higher may be performed. Or vice versa. Ignition of the main burner of the incinerator and activation of the oil gun may also be performed at appropriate time. In other words, the embodiment may be such that the waste is started to be charged into the incinerator after the conditions of the flow path connection state and preferably the condition of the temperature inside the furnace are satisfied. If the waste treatment facility as in the fourth embodiment does not have a switching unit, the condition for determining that the turbocharger is in a stable operating condition and the condition for the temperature inside the furnace are preferably set. The embodiment may be such that the waste is started to be put into the incinerator after the filling.

Further, when the waste treatment facility is configured not to have a heating unit as in the above-described embodiments 3 to 5, the supercharger can be operated stably with the passage of time after the waste is charged. After that, that is, 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 is preset to be appropriate as the temperature of the Tγ (oxygen-containing gas flowing into the incinerator 10) described above. The flow rate adjustment control A may be terminated and the flow rate adjustment control B may be started after the temperature becomes equal to or higher than the above temperature.

Further, in the above-described first to fifth embodiments, the operation control of the waste treatment facility is automatically controlled by the controller 80, but the operation control may be manually controlled. For example, it is not provided with one or more of the switching unit control unit 85 and the on-off valve opening degree control unit 87 in the above-described first to third and fifth embodiments, and from each detection value received by the receiving unit 81, a person The opening and closing of the switching valve V1, the first flow rate adjusting valve V2, and the on-off valve V6 may be manually controlled by visually determining or the like.

Alternatively, in another embodiment, in addition to those shown in the above-described first to fifth embodiments, the waste treatment facility 1 may further include a branch flow path and a flow rate adjusting valve in the gas supply flow path L1. For example, a branched exhaust flow path and a flow rate adjusting valve provided in the exhaust flow path may be further provided in the vicinity of the inlet of the incinerator in the gas supply flow path. By further providing such an exhaust flow path and a flow rate adjusting valve, not only the gas flow rate fluctuation and the pressure fluctuation near the incinerator inlet after the start of waste injection can be dealt with by the operation of the gas supply unit, but also the flow rate. It is also possible to adjust the flow rate with a regulating valve.

In the above-described first to fifth embodiments, sewage sludge has been described as an example of waste, but the present invention is not limited to this, and the waste treatment equipment of the present invention is used for incinerating other waste such as municipal waste. May be applied.

Further, in the above-described first to fifth embodiments, an example in which the blower 61, the first blower 61A and the second blower 61B are used as the gas supply unit 60 has been described, but the pressure increase capable of supplying oxygen-containing gas in the gas supply flow path. Any device may be applied as long as it is a device.

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

It should be understood that the embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1, 1A, 1B, 1C, 1D Waste treatment equipment 10 Incinerator 11 Flow bed 12 Free board 20 Waste input equipment 30 Supercharger 31 Compressor 32 Turbine 33 Connection part 40 Preheater 50 Switching part 60 Gas supply part 61 Blower 61A 1st blower 61B 2nd blower 70 Heating unit 71 Burner 72 Fuel pump 80 Controller 81 Receiver 82 Judgment unit 83 Waste input equipment Control unit 84 Gas supply unit Control unit 85 Switching unit Control unit 86 Heating unit Control unit 87 On-off valve Opening control unit 101 Main burner 102 Oil gun

Claims (11)

It is a waste treatment facility that treats waste.
An incinerator that burns the waste and
A waste input device for inputting the waste into the incinerator, and
A compressor that compresses the oxygen-containing gas, and a supercharger that includes a turbine that is connected to the compressor and can drive the compressor by receiving the 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.
In order to connect at least a part of the flow path of the upstream portion of the compressor, the compressor, the preheater, the turbine, and the incinerator in this order, and supply the oxygen-containing gas sucked from the upstream of the compressor to the incinerator. Gas supply flow path and
A gas supply unit capable of supplying oxygen-containing gas to the gas supply flow path,
A waste input device control unit that controls the waste input device so as to start charging the waste after the gas supply unit is driven.
A waste treatment facility including a gas supply unit control unit that controls the gas supply unit so that the gas supply unit stops operation after the waste is charged. The waste treatment facility is provided in the control flow path for adjusting the 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 the control flow path. The on-off valve with adjustable opening and the opening of the on-off valve are controlled so that the supply flow rate of the oxygen-containing gas flowing into the incinerator or the turbine is within a preset supply flow rate setting range. Further equipped with an on-off valve opening control unit
In the gas supply unit control unit, the flow rate adjustment rate, which is the 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 the preset flow rate adjustment rate set value. The waste treatment facility according to claim 1, which is configured to stop the gas supply unit after the gas supply unit has become. The waste treatment facility has a switching unit that switches between a flow path cut-off state in which the compressor outlet and the turbine inlet are cut off in the gas supply flow path and a flow path connection state in which the compressor outlet and the turbine inlet are connected. Further prepare
The gas supply unit can supply oxygen-containing gas to a portion of the gas supply flow path between the cut-off point in the flow path cut-off state and the turbine inlet.
After the gas supply unit was driven, the waste input equipment control unit was switched from the flow path cutoff state to the flow path connection state, and the temperature inside the incinerator exceeded the temperature set value inside the furnace. The waste treatment facility according to claim 1 or 2, which later controls the waste input device so as to start the input of the waste. The waste treatment facility further includes a heating unit that heats the oxygen-containing gas supplied from the gas supply unit before flowing into the turbine.
In the waste input equipment control unit, the gas supply unit and the heating unit are driven to switch from the flow path cutoff state to the flow path connection state, and the temperature in the incinerator is the temperature set value in the furnace. The waste treatment facility according to claim 3, wherein the waste input device is controlled so as to start the input of the waste after the amount exceeds the above. The heating unit has 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 so as 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 smaller than the preset waste rated input speed set value, and until the waste input rated input speed set value is reached for the first time. The waste treatment facility according to any one of claims 1 to 5, which controls the waste input device so as to increase the waste input rate with the passage of time. An incinerator that burns waste, a waste input device that injects the waste into the incinerator, a compressor that compresses the oxygen-containing gas, and a compressor that is connected to the compressor and receives the supply of the oxygen-containing gas. A supercharger including a turbine capable of driving the compressor, a preheater for heating the oxygen-containing gas by exchanging heat between the oxygen-containing gas discharged from the compressor and the exhaust gas discharged from the incinerator, and a preheater. In order to connect at least a part of the flow path of the upstream portion of the compressor, the compressor, the preheater, the turbine and the incinerator in this order, and supply the oxygen-containing gas sucked from the upstream of the compressor to the incinerator. It is a method of starting up a waste treatment facility equipped with a gas supply flow path of
A process of driving the turbine by supplying an oxygen-containing gas to the gas supply flow path using a gas supply unit, and a process of driving the turbine.
After driving the turbine, a step of starting the charging of the waste from the waste charging equipment to the incinerator, and a step of starting the charging of the waste into the incinerator.
A method for starting up a waste treatment facility, which comprises a step of stopping the operation of the gas supply unit after starting the input of the waste. The waste treatment facility is provided in the adjusting flow path for adjusting the 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 is provided in the adjusting flow path and is open. Further equipped with an on-off valve that can adjust the degree,
The method of starting up the waste treatment facility is to adjust the opening degree of the on-off valve so that the supply flow rate of the oxygen-containing gas flowing into the incinerator or the turbine is within a preset supply flow rate setting range. After adjusting, the flow rate adjustment rate, which is the 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, becomes larger than the preset flow rate adjustment rate set value. The method for starting up a waste treatment facility according to claim 7, further comprising a step of stopping the gas supply unit. The method of starting up the waste treatment facility is from a flow path cut-off state in which the compressor outlet and the turbine inlet are cut off in the gas supply flow path to a flow path connection state in which the compressor outlet and the turbine inlet are connected. Including the process of switching to
The step of driving the turbine is performed by supplying an oxygen-containing gas to a portion of the gas supply flow path between the cut-off point in the flow path cut-off state and the turbine inlet.
7. The step of starting the input of the waste is performed after the flow path cutoff state is switched to the flow path connection state and the temperature in the incinerator exceeds the temperature set value in the furnace. Alternatively, the method for setting up the waste treatment facility according to 8. The method for starting up a waste treatment facility according to any one of claims 7 to 9, wherein the oxygen-containing gas supplied by the gas supply unit is heated before flowing into the turbine. The waste input rate is started at an initial input rate smaller than the preset waste rated input rate set value, and the waste is disposed of as time elapses until the waste rated input rate set value is reached for the first time. The method for starting up a waste treatment facility according to any one of claims 7 to 10, wherein the waste is charged so as to increase the material charging speed.

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