JPH0763319A - High temperature high pressure ash disposing system - Google Patents

Abstract

PURPOSE:To provide a high temperature high pressure ash disposing system for disposing pulverized and granular ash discharged from a high temperature high pressure atmosphere combustion chamber or a ceramic filter for a pressure type fluidized bed boiler. CONSTITUTION:A high temperature high pressure ash disposing system comprises at least one inclination installation type screw feeder 1, at least one high pressure bubbling cooler 2, a high pressure ash hopper 3, an ash lock hopper 4, a uniform pressure pipe 5, an ash feed line 13, and a blower 6. The inclination installation type screw feeder 1 is designed to cool and feed ash to the high pressure bubbling cooler 2 as the pressure fluctuation of an outlet and an inlet is self-sealed by fed ash. The ash is further cooled approximately to normal temperature by the high pressure bubbling cooler 2 to feed the ash to the high pressure hopper 3. In a state that the pressure in the ash lock hopper is adjusted to a value equal to that in the high pressure ash hopper 3 through operation of the uniform pressure pipe, ash from the high pressure ash pipe 3 is received by the ash lock hopper 4. After the flow between the ash lock hopper 4 and the high pressure ash hopper 3 is cut off and the pressure in the ash lock hopper 4 is reduced, the ash is fed to the ash feed line 13 leading to a normal pressure ash storage hopper 8. The ash is continuously cooled and discharged to the normal pressure ash storage hopper 8 by a blower 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention treats fine ash or granular ash discharged from a combustion chamber in a high temperature and high pressure atmosphere such as a pressurized fluidized bed boiler, which is currently in practical use, or a cyclone and a ceramic filter. High temperature and high pressure ash processing system for

[0002]

2. Description of the Related Art Various methods for effectively removing ash discharged from a high temperature and high pressure chamber have been proposed. FIG. 8 shows an example of a conventional technique, and is a diagram of a method and an apparatus for discharging discharged matter from a high temperature and high pressure chamber described in Japanese Patent Application Laid-Open No. 4-306408. In FIG. 8, 101 is a high temperature and high pressure chamber, 102 is an exhaust, 103 is a transporter, and 104 is a transporter.
Is a transport pipe, 105 is a dust collector, 106 is a pressure air supply circuit, 107 is a pressure reducing circuit, 108 is a booster, and 109 is a flow control valve.

In the prior art, the high temperature and high pressure chamber 10
Prior to the discharge of the discharged matter 102 sent from 1, the high pressure air from the compressed air supply circuit 106 is transferred to the transporter 1.
03, the internal pressure of the high-temperature high-pressure chamber 101 is increased to almost the same pressure, and then the high-temperature high-pressure chamber 101 and the transporter 103 are made to communicate with each other, and then the flow control valve 109 and its front and rear valves are operated. The discharge 102 in the high temperature / high pressure chamber 101 is fed into the transporter 103.

After supplying a predetermined amount of the discharged matter 102 into the transporter 103, the valves between the high temperature and high pressure chamber 101 and the transporter 103 are closed and the valve of the pressure reducing circuit 107 is opened, so that the pressure inside the transporter 103 is almost reduced. Reduce to atmospheric pressure.

Next, the valve of the pressure reducing circuit 107 is closed and the pressure air from the pressure air supply circuit 106 is transferred to the transporter 103.
Each booster 10 from the top and bottom of the
Inhale to 8. This prevents the formation of bridges at the bottom of the transporter 103,
Pressure air supply circuit 1 through booster 108 in
The discharged matter 102 is sent into the dust collector 105 while being cooled by the pressurized air sent from 06. When the delivery is completed, each valve in the pressure air supply circuit 106 is returned to the initial state, and the discharge 102 is repeatedly discharged.

[0006]

As described above, according to the above-mentioned prior art, when the discharged matter is taken out from the high temperature and high pressure chamber, the atmosphere of the high temperature and high pressure chamber is not adversely affected smoothly and the ambient temperature air for transportation is used. It is said that it will be possible to effectively carry out while cooling to a predetermined temperature.
However, the above conventional technique still has the following problems. In other words, a booster is provided in the transport path for high-temperature waste, and it is attempted to carry it while cooling by blowing outside air at room temperature, but this method cannot be expected to perform efficient cooling, and the device itself is large. Turn into.

Although it has been proposed to provide a cooling mechanism in the discharge line from the high temperature and high pressure chamber, details of the cooling method are not disclosed. Further, it does not disclose a method of continuously and efficiently cooling and discharging.

The present invention has been made in view of such a situation as described above. With a simple structure, the ash is efficiently cooled while continuously taking out ash from the high temperature and high pressure chamber, and the ash is stored in the ash storage hopper. It is an object of the present invention to provide a high-temperature high-pressure ash treatment system that is not affected by fluctuations in operating pressure, that is, in which combustion exhaust gas does not flow in.

[0009]

The above objective is accomplished by a high temperature, high pressure ash treatment system as set forth in the appended claims. That is, (1) at least one tilt-installed screw feeder that feeds ash from the high-temperature and high-pressure chamber while cooling it, at least one high-pressure bubbling cooler that receives and cools ash from the screw feeder, and a high-pressure bubbling cooler. High pressure ash hopper for temporarily storing the cooled ash sent from the ash lock hopper for sending it to the normal pressure ash storage hopper, pressure equalizing pipe between the high pressure ash hopper and the ash lock hopper, and the ash lock hopper outlet It has an ash feed line and a blower for sending the ash from the ash to the atmospheric ash storage hopper, and the tilt-installed screw feeder is used to feed the ash from the high temperature and high pressure chamber while self-sealing the pressure fluctuations at the inlet and outlet. While cooling the ash of the ash, it is sent to the high-pressure bubbling cooler. The high-pressure bubbling cooler further cools the ash to near room temperature and sends it to the high-pressure ash hopper to lock the ash. After the pressure is equalized with the high pressure ash hopper by equalizing pipe operation, the hopper receives ash from the high pressure ash hopper, cuts off the flow between the ash lock hopper and the high pressure ash hopper, and decompresses the ash lock hopper with a decompression line. A high-temperature high-pressure ash processing system that sends the ash to the ash feed line to the atmospheric ash storage hopper and continuously cools and discharges the ash to the atmospheric ash storage hopper by a blower.

(2) At least one sealing device such as an L (L) valve for circulating the ash from the high temperature and high pressure chamber, and at least one high pressure bubbling cooler for receiving and cooling the ash from the sealing device such as the L valve. , A high-pressure ash hopper for temporarily storing the cooled ash sent from the high-pressure bubbling cooler, an ash lock hopper for sending to the ash storage hopper under normal pressure, and a pressure equalizing pipe between the high-pressure ash hopper and the ash lock hopper, It has an ash feed line and a blower for sending the ash from the ash lock hopper outlet to the atmospheric ash storage hopper, and the sealing device such as the L valve is self-sealing the pressure fluctuations at the inlet and outlet by the ash fed. The ash from the high-temperature and high-pressure chamber is passed to a high-pressure bubbling cooler, which further cools the ash and sends it to the high-pressure ash hopper, and the ash lock hopper uses a pressure equalizing pipe to operate high pressure. The ash from the high-pressure ash hopper is received by equalizing the pressure with the ash hopper, cutting off the flow between the ash lock hopper and the high-pressure ash hopper, depressurizing the ash lock hopper with a decompression line, and then transferring the ash to the atmospheric ash storage hopper. A high-temperature high-pressure ash processing system that sends the ash to a supply line and continuously cools and discharges the ash by a blower to an atmospheric ash storage hopper.

(3) The inclined installation type screw feeder has a cylindrical shape, an ash inlet is provided on the upper surface of the lower part of the cylinder, an ash outlet is provided on the lower surface of the upper part of the cylinder, and the outer shell of the cylinder has a jacket structure.
The screw shaft of the central portion of the cylinder is a hollow structure, and is a screw feeder type cooler that conveys cooling water through the cylindrical outer shell and the screw shaft while cooling the ash that is moved by the screw. With a pressure-resistant structure, plate-like screw blades were attached to the lower ash inlet side and upper ash outlet side of the hollow screw shaft supported at both ends in a cylinder by pressure-tight sealing, and the above-mentioned plates were attached to the intermediate portion of the hollow screw shaft. The high-temperature high-pressure ash treatment system according to (1), wherein hollow screw blades are continuously attached to the regular screw blades.

(4) The high-pressure bubbling cooler has a laterally long box-shaped flow chamber, a high-temperature ash inlet is provided at one end, and a cooled ash outlet is provided at the other end, and a cooling pipe is provided inside. The lower part of the flow chamber is used as an air diffuser, and a wind box is formed at the bottom of the air diffuser. Ejection gas outlet is provided, fluidized ash is delivered by passing through the inside of the box while being cooled by contact with the cooling pipe, and the flow chamber and wind box are stored in the pressure vessel, and the longitudinal side wall of the flow chamber Is formed by two partition plates facing each other, and an ash inlet / outlet, a fluidizing gas inlet / outlet, and a cooling water inlet / outlet are provided through the pressure vessel, and the air box, the air diffuser plate, and the flow chamber are divided into a plurality of parts. The high temperature and high pressure ash treatment system according to (1) or (2) or (3). Is. Hereinafter, the operation and the like of the present invention will be described based on Examples.

[0013]

1 and 2 are views showing an embodiment of a high temperature and high pressure ash treatment system according to the present invention, and FIG. 1 is a system diagram of a high temperature and high pressure ash treatment system composed of the most basic equipment, and FIG. [Fig. 3] is a system diagram of a high temperature and high pressure ash processing system when an L (L) valve is used in a high pressure gas sealing system.

1 and 2, 1 is an inclined type screw feeder, 2 is a high pressure bubbling cooler, 3 is a high pressure ash hopper, 4 is an ash lock hopper, 5 is a pressure equalizing pipe, 6 is a blower, 7 is a high temperature and high pressure chamber, 8 is an atmospheric ash storage hopper, 9 is a decompression pipe, 10 is an ash extraction pipe, 11 is a bubbling air discharge pipe,
12 is an ash delivery pipe, 13 is an ash delivery line, 14, 15 and 1
6 is an ash delivery pipe and 17 is a pressurizing pipe.

First, in FIG. 1, the ash discharged from a combustion chamber in a high temperature and high pressure atmosphere such as a pressurized fluidized bed boiler and discharged through a high temperature and high pressure chamber 7 such as a cyclone and a ceramic filter is first inside the inclined installation type screw feeder 1. to go into.

FIG. 3 is a view showing an embodiment of the inclined installation type screw feeder 1, in which 51 is a cylindrical outer shell and 5
2 is a screw blade, 53 is a hollow screw shaft, 54 is an ash inlet, 55 is an ash outlet, 56, 57 and 58 are cooling water inlets, 59, 60 and 61 are cooling water outlets, 62 and 63 are support portions, Reference numerals 64 and 65 are connection portions.

The screw feeder in the embodiment has a cylindrical outer shape and is installed so as to be inclined so that the ash feeding side is lower and the ash feeding side is higher than the horizontal level, and the ash feeding port 54 is provided on the lower upper surface of the cylinder. An ash delivery port 55 is arranged on the lower surface of the upper part.

The cylindrical outer shell 51 and the connecting portions 64 and 65 inserted between the cylindrical outer shell 51 and the both-end supporting portions 62 and 63 have a jacket structure, and a screw for moving ash inside the cylindrical outer shell 51. Has been inserted. The shaft of the screw has a hollow structure, and the cylindrical outer shell 51 and the connecting portion 64,
Cooling water is circulated in the jacket of 65 and in the hollow screw shaft 53 to cool the high temperature ash flowing in the screw feeder.

The ash charged from the ash charging port 54 at the lower part of the screw feeder is pushed up from the lower part to the upper part by the rotating screw blades 52, and sequentially moves to the upper part of the screw feeder while substantially filling the inside of the cylindrical outer shell 51, The temperature is lowered by contact with the inner wall of the cylindrical outer shell 51 or the screw, and the cylindrical outer shell 51 is discharged from the ash delivery port 55. Therefore, the gas flowing between the upstream side and the downstream side of the screw feeder is blocked by the ash moving in the screw feeder, and the high temperature / high pressure gas on the upstream side is prevented from flowing out to the downstream side.

Even when the screw blades of the screw feeder are all made of conventional plate blades from the ash inlet side to the ash outlet side, the high temperature high pressure gas on the upstream side is generated by the ash accumulated in the screw feeder as described above. Although it is possible to seal, the density of the ash that normally accumulates in the lower part of the screw feeder is low and the volume that is filled is also small, so that gas sometimes flows through the gap between the screw blades 52 and the cylindrical shell 51 to the downstream side. Or the fluidized air of the downstream equipment may flow back.

These problems are caused by, for example, the structure of the screw blade having a plate-shaped screw blade structure only on the ash input port 54 side and the ash delivery port 55 side, and the middle portion thereof has a narrow plate-shaped or tubular object. This can be solved by forming only the tip portion and forming a hollow screw blade structure in which both ends are joined to the tips of the upstream and downstream plate-shaped screw blades, respectively.

That is, the ash charged from the ash charging port 54 first moves in the screw feeder by the lower plate-shaped screw blade, and the narrow width formed at the tip of the hollow screw blade in the region of the hollow screw blade. Only the bottom ash in the cylindrical outer shell 51 is pushed upward by the plate or the tubular blade, and the ash pushed up next overflows from the hollow portion of the hollow screw blade and slides downward in the cylindrical outer shell 51. While repeating the operation of falling down and being pushed up again by the hollow screw blades, it gradually accumulates from the lower part, and finally the lower part in the screw feeder is filled with a slightly consolidated ash.

As a result, even when a pressure fluctuation occurs in the high temperature and high pressure chamber 7 and the like arranged on the upstream side of the screw feeder, the gas is prevented from flowing out to the downstream side of the screw feeder, and the equipment on the downstream side of the screw feeder is prevented. Can be prevented from being damaged by high-temperature gas, or the backflow of fluidized air or the like from the screw feeder downstream side device can be prevented.

The ash cooled and discharged in the inclined installation type screw feeder 1 enters the high pressure bubbling cooler 2 arranged on the downstream side. 4 is a sectional view showing an embodiment of the high pressure bubbling cooler 2. In FIG. 4, 71 is an ash inlet pipe, 72 is an ash outlet pipe, 73 is a cooling pipe, 74 is a main diffused air inlet pipe, and 75 is an auxiliary diffused air. Air inlet pipe, 76 diffused air outlet pipe, 77 air chamber, 78 diffuser plate, 79 flow chamber,
80 is an air chamber partition plate, 81 is an intermediate baffle, 82 is a final baffle, 83 is an ash removal partition plate, 84 is a water chamber barrel, and 85
Is a cooling water inlet pipe, 86 is a cooling water outlet pipe, 87 is a water chamber partition plate, 10 is an ash extraction pipe, 89 is a longitudinal partition plate, 90 is a tube plate, 91 is an ash side body, and 92 and 93 are end plates. is there.

The ash side of the high-pressure bubbling cooler in this embodiment has an outer wall formed of a pressure resistant container such as an ash side body 91 and an end plate 92, and a tube plate 90 is provided to separate the water chamber side and the ash side. A space from the lower part of the ash inlet pipe 71 to the final baffle 82 on the upstream side of the ash outlet pipe 72 is defined as an ash flow chamber 79, and the flow chamber 79 is divided into four by an intermediate baffle 81 in FIG.

At the bottom of each flow chamber 79, an air diffuser plate 78 made of a metal perforated plate or the like is provided, and an ash side body 91 below the diffuser plate 78.
It is laid so as to form an air chamber 77 between itself and the inner wall. The air chamber 77 is divided by the air chamber partition plate 80 so as to correspond to each of the flow chambers 79 divided at the upper portion. A partition plate 89 is provided substantially vertically on both sides of each flow chamber 79 in the longitudinal direction so as to face each other.

A main diffused air inlet pipe 74 is provided at the bottom of each air chamber 77, and a diffuser plate 7 laid at the bottom of each flow chamber 79.
Auxiliary diffused air inlet pipes 75 are opened on the side faces near 8 so as to penetrate through the ash side body 91, respectively. On the other hand, the diffused air outlet pipe 76 is provided at the top of the high pressure bubbling cooler.
A plurality is provided so as to pass through 1. The diffused air outlet pipe 76 is connected to the upper portion of the high temperature and high pressure chamber 7 through the bubbling air discharge pipe 11 in FIG.

A large number of cooling pipes 73 are provided in the center of the high pressure bubbling cooler. One end of the cooling pipe 73 penetrates the tube plate 90 and opens at the cooling water inlet portion in the water chamber body 84 partitioned by the water chamber partition plate 87, and the other end is also the tube plate 9
It penetrates through 0 and opens in the cooling water outlet part in the water chamber body 84.

Longitudinal partition plates 8 are provided on both side walls of the flow chamber 79.
9 facing each other and mounted in parallel, and the flow chamber 79 at the most downstream portion
On the upper surface of the air diffuser plate 78, the ash extraction pipe 10 is inserted through the outer wall of the high pressure bubbling cooler.

The high temperature and high pressure ash discharged from the pressurized fluidized bed combustion furnace is fed through an ash inlet pipe 71 provided at the upper portion of the high pressure bubbling cooler. The ash that has been sent enters the flow chamber 79 below the ash inlet pipe 71 and gradually accumulates on the diffuser plate 78.

Main diffused air is introduced from the bottom of the high-pressure bubbling cooler, and auxiliary diffused air is introduced from the side. The auxiliary diffused air is ejected toward the ash outlet pipe 72 side along the upper surface of the diffuser plate 78. As a result, the ash that has been sent and accumulated floats and fluidizes, and while contacting the cooling pipe and lowering its temperature, part of the ash flows through the gap between the lower end of the intermediate baffle 81 and the diffuser plate 78 to the downstream flow chamber. 79, and other ash crosses the upper portion of the intermediate baffle 81 and enters the flow chamber 79 also on the downstream side. The ash sent to the adjacent fluid chamber 79 is sequentially deposited in the fluid chamber, is suspended and fluidized, and is further sent into the fluid chamber 79 on the ash outlet pipe 72 side while being cooled.

The ash cooled to a predetermined temperature in this way flows from the inside of the flow chamber 79 at the most downstream portion to the final baffle 8
It goes over the upper part of 2 and falls above the ash outlet pipe 72, and is discharged through the ash outlet pipe 72.

Since the longitudinal partition plates 89 constituting the longitudinal side walls of the respective flow chambers 79 are provided facing each other in parallel, the ash in the flow chambers 79 has a uniform bubbling flow velocity in the height direction. Based on this, a stable flow state or a uniform cooling action can be obtained.

Unlike normal fly ash produced by combustion of pulverized coal, ash produced in a pressurized fluidized bed combustion furnace has large cohesiveness and is difficult to fluidize. Therefore, in the present embodiment, as a means for continuously cooling and discharging the ash sent into the high-pressure bubbling cooler, the main diffused air is jetted upward from the lower part of the flow chamber 79 to float the ash. In addition to moving the ash by ejecting the auxiliary diffused air to the ash outlet pipe 72 side substantially along the upper surface of the diffuser plate 78,
The auxiliary diffused air sent to 9 is always ejected sequentially from the upstream side to the downstream side of the ash flow.

Further, the main diffused air is divided into the main diffused air and the pulsed air for the main diffused air, and the main diffused air is constantly jetted to each flow chamber by a fixed amount to float and fluidize the ash. Pulsed air for diffused air is sequentially ejected from the upstream side to the downstream side of the ash. As a result, the flow of ash in the high-pressure bubbling cooler was activated, and good ash fluidity was obtained for a long period of time.

In the high-temperature and high-pressure ash treatment system shown in FIG. 1, the high-pressure ash discharged from the high-temperature and high-pressure chamber 7 and cooled to a predetermined temperature by the above-mentioned inclined installation type screw feeder 1 and high-pressure bubbling cooler 2 is described below. It is fed and stored in the atmospheric ash storage hopper 8 according to the procedure.

First, the ash delivered from the ash outlet pipe 72 disposed in the high pressure bubbling cooler 2 is stored in the high pressure ash hopper 3 through the ash delivery pipe 14 communicating with the high pressure ash hopper.

While the ash level of the high pressure ash hopper 3 is increasing to a predetermined value, the ash lock hopper 4 is operated by the high pressure ash hopper 3
The process of preparing to receive ash from is entered. That is, a valve provided in the pressurizing pipe 17 communicating with the ash lock hopper 4 is opened, compressed air is allowed to flow into the ash lock hopper 4, and the internal pressure of the ash lock hopper 4 is almost equal to the internal pressure of the high pressure ash hopper. After pressurizing to, the valve provided in the pressurizing pipe 17 is closed.
In this state, a valve provided in a pressure equalizing pipe that connects the high pressure ash hopper 3 and the ash lock hopper 4 is opened to equalize the internal pressures of the high pressure ash hopper 3 and the ash lock hopper 4. After that, ash delivery pipe 15
The ash accumulated in the high pressure ash hopper 3 is made to flow down into the ash lock hopper 4 by opening the valve provided in the ash lock hopper 4.

After confirming that the ash is filled in the ash lock hopper 4, the valves provided in the ash delivery pipe 15 and the pressure equalizing pipe 5 are closed, and the valves provided in the pressure reducing pipe 9 are opened to lock the ash. The pressure in the hopper 4 is released to atmospheric pressure. Ash lock hopper 4
By opening the valve of the lower ash delivery pipe 16, the ash in the ash lock hopper 4 falls onto the ash feed line 13, and the blower 6
Atmospheric pressure ash storage hopper 8 by the carrier air sent from
Sent in.

The temperature of the ash delivered from the high temperature / high pressure chamber 7 is 8
When the ash discharged from the high temperature and high pressure chamber 7 is directly fed into the high pressure and high pressure bubbling cooler 2 at a high temperature of 50 ° C. or 900 ° C., the diffuser plate and the like which forms the inside of the high pressure and bubbling cooler 2 is burnt out. Therefore, the ash in the high temperature and high pressure atmosphere can be efficiently and economically cooled by cooling the ash to a required temperature by the inclined installation type screw feeder 1 in advance and further cooling it by the high pressure bubbling cooler 2. It becomes possible to cool and discharge.

FIG. 1 shows the case where two inclined installation type screw feeders 1 are arranged in parallel and one high pressure bubbling cooler 2 is installed. The amount of ash discharged from the high temperature high pressure chamber 7 is shown. If the number is small, one inclined installation type screw feeder 1 is sufficient.

When the temperature of the ash discharged from the high-temperature high-pressure chamber 7 is extremely high, such as 950 ° C. or higher, a plurality of inclined installation type screw feeders 1 are arranged in series according to the temperature. Therefore, it becomes possible to sufficiently cool the temperature of the ash to a temperature at which the members forming the inside of the high-pressure bubbling cooler 2 arranged downstream are not damaged.

FIG. 2 is a system diagram of the system shown in FIG. 1, in which an L (L) valve 20 is provided instead of the inclined installation type screw feeder 1. The L-valve 20 has a standard structure shown in FIG. 5 and a so-called siphon valve as shown in FIG.

FIG. 5 shows that by providing a horizontal portion in the pipe, the powder or granules flowing inside are temporarily retained to maintain the sealing function, and a gas 21 such as air is blown in by a pulse so that the powder or granules in the retention portion are blown. It moves the body downstream.

Siphon type el valve 20 shown in FIG.
Is to form a stagnation part filled with the granular material by lifting a part of the pipe once upward, whereby the flow of gas between the upstream side and the downstream side of the el valve 20 is blocked, while the granular material is blocked. Can be smoothly distributed by the siphon principle.

The system shown in FIG. 2 is suitable when the ash to be treated has a large capacity and is not so high in temperature.
The ash discharged from the high temperature and high pressure chamber 7 is sealed by the el valve 20 to prevent the high temperature and high pressure gas from flowing into the high pressure bubbling cooler 2 and causing problems such as burnout, and the ash that has been fed is high pressure bubbling. After being sufficiently cooled to a predetermined temperature by a cooler 2, it is delivered to a high pressure ash hopper 3 arranged on the downstream side.

[0047]

As described above, according to the present invention, the following effects are exhibited. The inclined installation type screw feeder can cool the ash discharged from the high temperature and high pressure chamber while self-sealing it with the ash supplied to the high pressure and high pressure bubbling cooler. The high-pressure bubbling cooler can further efficiently cool the ash to a temperature that does not affect the downstream equipment and send it to the ash lock hopper. The ash in the high-pressure ash hopper can be easily sent to the ash lock hopper by operating the pressure equalizing pipe. Pressure is reduced by opening and closing the inlet / outlet valve and exhaust valve of the ash lock hopper, and the continuous discharge of ash in the high-pressure bubbling cooler is used as ash storage-pressure reduction-discharging-intermittent discharge of ash storage, and the blower blows the ash storage hopper at atmospheric pressure. The ash can be continuously cooled and discharged into the inside.

[Brief description of drawings]

FIG. 1 is a systematic diagram of a system according to a first embodiment of the present invention.

FIG. 2 is a system diagram of a system according to a second embodiment of the present invention.

FIG. 3 is a partially cutaway overall view of a tilt-installed screw feeder in a system according to the present invention.

FIG. 4 is a cross-sectional view of a high pressure bubbling cooler in a system according to the present invention.

FIG. 5 is an illustration of an L-valve in the system according to the present invention.

FIG. 6 is an illustration of an el valve in the system according to the present invention.

FIG. 7 is an example of a conventional technique.

[Explanation of symbols]

 1 inclined installation type screw feeder 2 high pressure bubbling cooler 3 high pressure ash hopper 4 ash lock hopper 5 pressure equalizing pipe 6 blower 7 high temperature and high pressure chamber 8 normal pressure ash storage hopper 9 pressure reducing pipe 10 ash extraction pipe 11 bubbling air discharge pipe 12, 14, 15 , 16 Ash delivery pipe 13 Ash delivery line 17 Pressurizing pipe 20 L (L) valve 21 Pulse gas 51 Cylindrical shell 52 Screw blade 53 Hollow screw shaft 54 Ash input port 55 Ash feed port 56, 57, 58 Cooling water inlet 59 , 60, 61 Cooling water outlet 62, 63 Support part 64, 65 Connection part 71 Ash inlet pipe 72 Ash outlet pipe 73 Cooling pipe 74 Main diffused air inlet pipe 75 Auxiliary diffused air inlet pipe 76 Diffused air outlet pipe 77 Air Chamber 78 Air diffuser 79 Fluid chamber 80 Air chamber partition 81 Intermediate baffle 82 Final baffle 83 Ash removal partition 84 Water chamber body 85 Cooling water inlet pipe 86 Cooling water outlet pipe 87 Water chamber partition plate 89 Long bottom direction partition plate 90 Tube plate 91 Ash side body 92, 93 End plate 101 High temperature / high pressure chamber 102 Emissions 103 Flow control valve 104 Transport pipe 105 Dust collector 106 Pressure air supply circuit 107 Pressure reducing circuit 108 Booster 109 Flow control valve

[Procedure amendment]

[Submission date] September 30, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

Claims (4)

[Claims] 1. At least one tilt-installed screw feeder that feeds ash from a high-temperature high-pressure chamber while cooling, at least one high-pressure bubbling cooler that receives and cools ash from the screw feeder, and a high-pressure bubbling cooler. High pressure ash hopper for temporarily storing the cooled ash sent from the ash lock hopper for sending to the ash storage hopper at normal pressure, pressure equalizing pipe between the high pressure ash hopper and the ash lock hopper, and ash lock hopper outlet It has an ash feed line and a blower to send the ash from the ash to the atmospheric ash storage hopper, and the tilt-installed screw feeder self-seals the pressure fluctuations at the inlet and outlet by the ash being fed, The ash of the ash is sent to the high pressure bubbling cooler while being cooled, and the high pressure bubbling cooler further cools the ash to near room temperature and sends it to the high pressure ash hopper. The hopper receives pressure from the high pressure ash hopper by equalizing the pressure with the high pressure ash hopper by a pressure equalizing pipe operation, shuts off the flow between the ash lock hopper and the high pressure ash hopper, and decompresses the ash lock hopper with a decompression line. It is sent to the ash feed line to the pressure ash storage hopper, and the blower continuously cools the ash to the atmospheric ash storage hopper.
A high-temperature high-pressure ash treatment system characterized by discharging. 2. A sealing device such as at least one L (L) valve for circulating the ash from the high temperature and high pressure chamber, and at least one high pressure bubbling cooler for receiving and cooling the ash from the sealing device such as the L valve. A high-pressure ash hopper for temporarily storing the cooled ash sent from the high-pressure bubbling cooler, an ash lock hopper for sending to the ash storage hopper at normal pressure, a pressure equalizing pipe between the high-pressure ash hopper and the ash lock hopper, and ash It has an ash feed line and a blower for sending the ash from the lock hopper outlet to the atmospheric ash storage hopper, and the sealing device such as the L valve is a high temperature while self-sealing the pressure fluctuation of the inlet and outlet by the ash fed. The ash from the high-pressure chamber is passed to the high-pressure bubbling cooler, which cools the ash further to near room temperature and sends it to the high-pressure ash hopper. The ash from the high pressure ash hopper is received by equalizing the pressure with the high pressure ash hopper, the flow between the ash lock hopper and the high pressure ash hopper is cut off, the pressure inside the ash lock hopper is reduced by the decompression line, and then the normal pressure ash storage hopper. Sent to the ash feed line to the
A high-temperature high-pressure ash treatment system characterized by discharging. 3. An inclined installation type screw feeder has a cylindrical shape, an ash inlet is provided on the upper surface of the lower portion of the cylinder, an ash outlet is provided on the lower surface of the upper portion of the cylinder, and the outer shell of the cylinder has a jacket structure. A shaft is a hollow structure, a screw feeder type cooler that conveys cooling water flowing in the cylindrical outer shell and screw shaft while cooling the ash moved by the screw, and the cylindrical outer shell has a pressure resistant structure,
Attaching plate-shaped screw blades to the lower ash inlet side and upper ash outlet side of the hollow screw shaft supported at both ends in a cylinder by pressure-tight sealing, and to each of the plate-shaped screw blades in the middle part of the hollow screw shaft. The high-temperature high-pressure ash treatment system according to claim 1, wherein hollow screw blades are continuously attached. 4. A high-pressure bubbling cooler has a box-shaped flow chamber that is long in the lateral direction, a high-temperature ash inlet is provided at one end, and a cooled ash outlet is provided at the other end, and a cooling pipe is provided inside. Then, the lower part of the flow chamber is made into a diffuser plate, a wind box is formed at the bottom of the diffuser plate, and the fluidized gas sent into the wind box is jetted through the diffuser plate and jetted to the upper part of the flow chamber. A gas outlet is provided, fluidized and ash is cooled by contact with a cooling pipe while passing through the inside of the box and sent out, and the flow chamber and air box are housed inside the pressure vessel,
The longitudinal side wall of the flow chamber is formed by two partition plates facing each other, and an ash inlet / outlet, a fluidized gas inlet / outlet, and a cooling water inlet / outlet are provided in the pressure vessel, and the wind box, the air diffuser plate, and the fluid chamber are provided. The high-temperature high-pressure ash treatment system according to claim 1, which is divided into a plurality of pieces.