JP2001335154A - Carriage and supply system for exhaust gas treatment and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carriage and supply system for exhaust gas treatment and its method for permitting a decrease in distribution cost and easily obtaining the understanding of inhabitants in the view of environmental assessment. SOLUTION: The carriage and supply system for exhaust gas treatment comprises a carrier 4 for carrying a lime powder charged in a desulfurizer 1 and carrying a gypsum 3 produced after desulfurization treatment by the desulfurizer 1, a receiving tank 5 for receiving the lime powder 2 carried by the carrier 4, a reserving silo 6 for reserving the lime powder 2 to be supplied to the desulfurizer 1, and a forcing pipe 15 for forcing the lime powder 2 received by the receiving tank 5 to the reserving silo 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for conveying and supplying ash, and more particularly, to an apparatus for supplying lime powder to be supplied to a desulfurization apparatus to carry out exhaust gas desulfurization processing and to transport gypsum produced. The present invention relates to an apparatus and a method for transporting and supplying the same.

[0002]

2. Description of the Related Art It is known that lime (calcium carbonate) powder is desulfurized so that sulfur oxides such as sulfur dioxide gas in flue gas are not released into the atmosphere, and as a result, gypsum (calcium sulfate) is produced. Have been.

[0003] Conventionally, in order to transport lime powder to a storage silo installed in a place where a desulfurization device is located, a loose truck as a dedicated dump truck has been used. The loose wheel is equipped with a tank unit for loading fine lime powder and a pumping device for pumping the lime powder mounted on the tank unit to the storage silo, and the lime powder mounted on the loose wheel is It is transported to the storage silo using a special loose car receiving pipe.

[0004]

Since a loose car is a vehicle exclusively loaded with lime powder, nothing can be loaded after the loaded lime powder is carried into the storage silo, and the tank is empty. And moved again to the place where lime powder was loaded.

[0005] Further, the gypsum generated by the desulfurization device has been carried out to the outside by a vehicle other than the loose wheel.

[0006] For this reason, when considering the step of carrying lime powder into the storage silo and the step of carrying out gypsum generated by the desulfurization device, it is necessary to use a dedicated vehicle for each step.

As described above, conventionally, the number of required vehicles is increased, and it is necessary to secure a large number of drivers for driving the vehicles, and there has been a problem that the distribution cost is increased.

In addition, since the number of required vehicles increases,
The consumption of gasoline has increased, and the amount of exhaust gas has also increased accordingly, which is not preferable from the viewpoint of environmental assessment and has sometimes caused traffic congestion. For this reason, for example, when trying to construct a new factory, there is a problem that it is difficult to actively cope with a situation in which the number of vehicles entering is limited, and it is difficult to obtain the understanding of neighboring residents.

SUMMARY OF THE INVENTION An object of the present invention is to provide a system and method for removing and transporting flue gas, which solves the above-mentioned problems of the prior art, reduces distribution costs, and is favorable from the viewpoint of environmental assessment. It is to be.

[0010]

In order to achieve the above object, the present invention provides a flue gas treatment / feeding apparatus capable of conveying lime powder to be fed into a desulfurization apparatus and desulfurizing the lime powder from the desulfurization apparatus. A transport vehicle capable of transporting the generated gypsum, a receiving tank for receiving the lime powder transported by the transport vehicle, a storage silo for storing lime powder to be supplied to the desulfurization device, and a lime received in the receiving tank And a pressure feed pipe for feeding powder to the storage silo.

Here, the carrier has a folding and shrinkable bag capable of storing lime powder therein. In addition, an adjusting means for adjusting the amount of lime powder and passing it to the pressure feeding pipe is provided in a path between the receiving tank and the pressure feeding pipe.

[0012] Further, the present invention provides a method for transporting and supplying ash powder to a desulfurization apparatus, comprising the steps of transporting lime powder to be supplied to a desulfurizer by a transport vehicle, and receiving the lime powder transported by the transport vehicle into a receiving tank. A step of pumping the lime powder received in the receiving tank to a storage silo for storing the lime powder to be supplied to the desulfurizing device by a pressure feeding pipe; and And transporting the lime powder by the transport vehicle after transporting the lime powder.

In the above invention, the transport vehicle is capable of transporting lime powder to be supplied to the desulfurization device and transporting gypsum generated by desulfurization from the desulfurization device. Since it can be sent to the storage silo through the pressure feed pipe, the number of required vehicles and the number of drivers can be reduced, and the distribution cost can be reduced. Further, since the required number of vehicles can be reduced, the consumption of gasoline can be reduced, and the amount of exhaust gas from the transport vehicle can be reduced.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the flue gas treatment / feeding system is capable of conveying lime powder 2 to be supplied to a desulfurization device 1 and of transporting gypsum 3 generated by desulfurization from the desulfurization device 1. Transport vehicle 4, a receiving tank (tancar receiving tank) 5 for receiving the lime powder 2 transported by the transport vehicle 4, and a storage silo (tancar silo) connected to the desulfurization device 1 for storing lime powder to be supplied to the desulfurization device 1. 6)
And a pressure feed pipe 7 for pressure-feeding the lime powder received in the receiving tank 5 to the storage silo 6.

The receiving tank 5 is installed in a wide space where a plurality of transport vehicles 4 can enter and exit one after another.
Lifts the loading platform 4a and receives the loaded lime powder into the receiving tank 5.
To

An adjusting means for adjusting the amount of lime powder in the receiving tank 5 and passing it to the pressure feeding pipe 15 is provided in a path between the receiving tank 5 and a pressure feeding pipe 15 described later. The adjusting means includes a screw conveyor 10 provided at the bottom of the receiving tank 5, a gate 11 provided at the bottom of the receiving tank 5, a batch tank 12 provided downstream of the gate 11, and a batch tank 12. And a gate 13 provided on the downstream side. A pressure feed rotary valve 14 is provided downstream of the gate 13, and the lime powder adjusted by the adjusting means is sent to the pressure feed pipe 15 via the pressure feed rotary valve 14, for example, by a predetermined amount. The lime powder is pumped by a Roots blower 16 in the pressure feed pipe 15 and sent to the storage silo 6.

The lime powder conveyed by the conventional loose wheel 8 can be conveyed to the storage silo 6 through the loose wheel receiving pipe 9 by using a pressure feeding means installed on the loose wheel 8. This makes it possible to utilize the conventional loose wheel 8 as well.

The storage silo 6 is disposed near the desulfurization device 1, and the lime powder stored in the storage silo 6 is sent to the desulfurization device 1 connected to the storage silo 6.

The desulfurization device 1 is installed in a combustion device such as a thermal power plant, and absorbs sulfurous acid gas in flue gas by lime powder and reacts with water to produce gypsum 3.

The generated gypsum 3 is piled up as shown in FIG. 1 and mounted on the carrier 4 by the shovel car 17. The transport vehicle 4 on which the gypsum is mounted is a transport vehicle after transporting the lime powder 2 to the receiving tank 5.

The compressed air supplied from the compressed air source 31 is sent to a dust collector 32 provided above the storage silo 6, a dust collector 33 provided above the receiving tank 5, and air control flights 34. The air cleaned in the dust collectors 32 and 33 is discharged to the outside by the fan 35.

A screw conveyor 36 is provided below the dust collector 33. The lime powder that rises when it is thrown into the receiving tank 5 from the carrier 4 is introduced into the dust collector 33 through a pipe, and the lime dust is collected in the dust collector 33. The separated lime powder is conveyed by the screw conveyor 36 and put into the receiving tank 5. Thereby, the carrier 4a of the transport vehicle 4
The lime powder that flies when the lime powder is fed into the receiving tank 5 can be collected without wasting.

Next, referring to FIG. 2 to FIG.
A transport vehicle 4 capable of transporting gypsum 3 generated by the desulfurization device 1 and capable of transporting gypsum 3 will be described. In the figure, A indicates the forward direction of the carrier 4.

The carrier 4a of the carrier 4 has an under deck 21 installed at the bottom, an upper deck 22 which can be laid down on the upper surface of the under deck 21, a foldable rubber bag 23, and a rubber bag 23 which can be opened and closed. An outlet 24, a rear gate 25, and a side gate 26 are formed at the bottom.

When the lime powder is transported by the transport vehicle 4, as shown in FIGS. 3 and 5, the upper deck 22 is raised along the side gate 26, and the rubber bag 23 is inflated on the under deck 21. The lime powder is charged into the rubber bag 23 from the charging port 23a. In order to put the lime powder conveyed by the transport vehicle 4 into the receiving tank 5, the carrier 4a of the transport vehicle 4 is lifted up with the rear part as a rotation axis as shown in FIG. Is discharged to the receiving tank 5 from a discharge port 24 provided in the storage tank 5.

When the gypsum generated by the transport vehicle 4 is carried out, the rubber bag 23 is contracted and folded on the under deck 21 as shown in FIGS. Lying on top,
Plaster is mounted on the upper deck 22.

Next, the operation of the present embodiment will be described. The lime powder 2 supplied to the desulfurization device 1 is mounted on a rubber bag 23 of the transport vehicle 4 at a lime powder storage (not shown) and transported to the receiving tank 5. The carrier 4 having unloaded the lime powder into the receiving tank 5 moves around the piled plaster 3.

Next, the lime powder 2 transported by the transport vehicle 4 is put into the receiving tank 5. The lime powder received in the receiving tank 5 is sent to the pressure feed pipe 15 while being appropriately divided into small amounts by the gate 11, the batch tank 12, and the gate 13.

Next, the lime powder is pressure-fed into the storage silo 6 through the pressure feeding pipe 15 by the pressure feeding rotary valve 14 and the roots blower 16. The lime powder in the storage silo 6 is sent to the desulfurization device 1 by compressed air supplied from a compressed air source 31. In the desulfurization device 1, lime powder and water are reacted with flue gas discharged from the combustion device to perform desulfurization treatment.
The gypsum produced by the desulfurization treatment is discharged from the bottom of the desulfurization device 1 and piled up. After transporting the lime powder to the receiving tank 5, the transporting vehicle 4, which has moved around the plaster 3 where the loading bed 4 a has been emptied and piled up, as shown in FIG. 2 and FIG. The gypsum 3 is loaded by the shovel car 17 in a state where the plaster 3 is folded up and the upper deck 22 is laid down on the under deck 21. Then, the gypsum 3 is transported to a predetermined location (not shown) by the transport vehicle 4.

According to the present embodiment, the transport vehicle 4 transports the lime powder and puts the lime powder into the receiving tank 5,
Since the carrier 4 with the empty bed 4a can carry the gypsum generated by the desulfurization apparatus 1, the number of required vehicles can be reduced to about half compared with the conventional one, and the driving for driving the vehicles can be performed. The number of hands can be reduced by about half, and distribution costs can be reduced.

Further, since the required number of vehicles can be reduced, the consumption of gasoline can be reduced and the amount of exhaust gas from the carrier 4 can be reduced. It is preferable from the viewpoint of environmental assessment, and can reduce traffic congestion.For example, when constructing a new factory, it can easily and positively cope with the situation where the number of vehicles entering is limited. The situation can be easily understood.

Further, since the transport vehicle 4 is provided with the rubber bag 23 as a bag body, it is possible to transport the lime powder 2 that is weak to water so as not to get wet with water, and it is possible to transport the lime powder without soaking up the powder. The powder 2 can be transported.

Since the rubber bag 23 can be folded and contracted, the gypsum 3 can be loaded on the carrier 4a of the transporting vehicle 4 in a state where the rubber bag 23 is folded, and the rubber bag 23 for transporting the lime powder 2 is provided. The gypsum 3 can be prevented from being mixed into the inside of the container, and the conveyance of the lime powder 2 and the conveyance of the gypsum 3 can be made compatible.

[0035]

As described above, according to the structure of the present invention, the transport vehicle can transport lime powder to be supplied to the desulfurization device and can transport gypsum generated by desulfurization from the desulfurization device. Since the lime powder put into the receiving tank can be sent to the storage silo via the pressure pipe,
Distribution costs can be reduced. Further, since the number of required transport vehicles can be reduced, the amount of exhaust gas from the transport vehicles can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a conveyance and supply system for flue gas treatment of the present invention.

FIG. 2 is a cross-sectional view showing a carrier on a carrier on which gypsum is mounted, and showing a left half of the carrier with a bag body contracted.

FIG. 3 shows a carrier on a carrier when lime powder is loaded,
Sectional drawing which shows the left half of the carrier of a state where the bag body was expanded.

FIG. 4 is a side cross-sectional view illustrating a carrier on which a gypsum is mounted, showing a carrier and showing a state in which a bag body is contracted.

FIG. 5 shows a carrier on a carrier when lime powder is loaded,
Sectional side view which shows the state which the bag body expanded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Desulfurization apparatus 2 Lime powder 3 Gypsum 4 Transport vehicle 5 Receiving tank 6 Storage silo 15 Pressure piping 23 Rubber bag

Claims (4)

[Claims] 1. A transport vehicle capable of transporting lime powder to be supplied to a desulfurization device and capable of transporting gypsum generated by desulfurization processing from the desulfurization device, and receiving a lime powder transported by the transport vehicle. A tank, a storage silo for storing lime powder to be supplied to the desulfurization device, and a pressure feed pipe for pressure-feeding the lime powder received in the receiving tank to the storage silo; Feeding system. 2. The system according to claim 1, wherein the transport vehicle includes a collapsible bag body capable of storing lime powder therein. 3. An apparatus according to claim 1, wherein an adjusting means for adjusting the amount of lime powder and passing the lime powder to the pressure feeding pipe is provided in a path between the receiving tank and the pressure feeding pipe. The conveyance supply system for smoke exhaust treatment as described in the above. 4. A step of transporting the lime powder to be supplied to the desulfurization device by a transport vehicle, a step of receiving the lime powder transported by the transport vehicle into a receiving tank, and a pressurizing piping for the lime powder received by the receiving tank. By the step of pumping the lime powder to be supplied to the desulfurization device to a storage silo for storing the gypsum produced by desulfurization from the desulfurization device, the transport vehicle after transporting the lime powder to the receiving tank And carrying out a conveying process.