JPH0557169A - Cooling device for attachment of high-temperature and high-pressure vessel - Google Patents

Abstract

PURPOSE:To provide a cooling device for an attachment of a high-temperature and high-pressure vessel which eliminates the need of urgent operation stop even in the case of damage in a cooling pipe of a water cooled jacket. CONSTITUTION:In a cooling device for an attachment 3 such as a burner installed to a high-temperature and high-pressure vessel 1, a water cooled jacket 4 having 2 or more cooling pipes 5 is fixed to the attachment. A diversion device 7 is installed at the inlet of the cooling pipe 5 of the water cooled jacket 4, and a confluence device 9 is installed at the outlet of the cooling pipe 5. Cutoff valves 24 which shut the cooling pipe 5 by the pressure of a high-pressure fluid coming from the damaged cooling pipe 5 are installed to the diversion device 7 and the confluence device 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accessory cooling device for a high temperature and high pressure vessel for cooling accessories such as a burner provided in the high temperature and high pressure vessel.

[0002]

2. Description of the Related Art High-temperature and high-pressure vessels are known to carry out reactions and the like under high-temperature and high-pressure, and coal gasifiers, industrial furnaces, etc. are known. Is reacted with a gasifying agent such as oxygen or water vapor to produce hydrogen or carbon monoxide as a main fuel component.

The high-temperature and high-pressure container is provided with accessories such as a burner and a window for monitoring the inside of the container so as to face the inside of the container. A water cooling jacket having a cooling pipe is provided around the cooling pipe to supply cooling water to the cooling pipe to cool the accessory.

[0004]

By the way, in the above-mentioned high temperature and high pressure vessel, the pressure of the cooling water supplied to the cooling pipe of the water cooling jacket is set to the vessel internal pressure (for example, about 2 in the case of a coal gasification furnace).
Low pressure from 0 to 40 kgf / cm ² (about 5 for coal gasifier)
Since 10 to 10 kgf / cm ² ), if the cooling pipe of the jacket is damaged, the gas in the high temperature and high pressure vessel may flow out to the outside through the pipe. You need to stop driving. for that reason,
It is proposed that the pressure of the cooling water be higher than the pressure inside the container, but there is a problem in terms of the size of the pump and the pressure resistance of the piping, etc. Would flow into the container, which is not practical.

Therefore, the present invention has been made in consideration of such circumstances, and an object thereof is high temperature and high pressure that does not require an emergency stop of operation even if the cooling pipe of the water cooling jacket is damaged. It is to provide an accessory cooling device for a container.

[0006]

In order to achieve the above object, the present invention provides a cooling device for accessories such as a burner provided in a high temperature and high pressure vessel, wherein the accessories include a water cooling jacket having a plurality of cooling pipes. Provided with a flow divider at the inlet of the cooling pipe of the water cooling jacket and a confluencer at the outlet thereof, and shutting off the cooling pipe due to the pressure of the high-pressure fluid flowing from the damaged cooling pipe to the flow divider and the confluencer. Is provided.

[0007]

By providing the accessory with a water cooling jacket having a plurality of cooling pipes, the accessory is cooled by the plurality of cooling pipes. Even if any of these cooling pipes is damaged and high-pressure fluid flows into the pipe from there, a shut-off valve that shuts off the cooling pipe due to the pressure of the high-pressure fluid is provided in the flow divider and the merger. There is no possibility that the high-pressure fluid will flow out through the pipe. At this time, since the cooling water continues to flow to the other cooling pipes, the accessory can be cooled even if any pipe is damaged. Therefore, even if the cooling pipe of the water cooling jacket is damaged, there is no risk that the high-pressure fluid will flow out through the damaged pipe and the accessories will be cooled by the other cooling pipes, so that the operation is urgent. No need to stop.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1 showing a case where the accessory cooling device for a high temperature and high pressure vessel of the present invention is applied to a coal gasification furnace which is an example of a high temperature and high pressure vessel, 1 indicates a gasification furnace which is a high temperature and high pressure vessel. The furnace 1 has a high temperature (about 1400 ° C.) and a high pressure (about 2 ° C.).
It is configured to react hydrogen with a gasifying agent such as oxygen or water vapor under 0 to 40 kgf / cm ² ) to generate hydrogen, carbon monoxide, etc. Etc. are stretched.

The gasification furnace 1 is provided with accessories 3 such as a burner for injecting fuel into the furnace 1 and an in-furnace monitoring window so as to face the inside of the furnace 1. A water cooling jacket 4 is provided so as to surround this. This water cooling jacket 4 has two cooling pipes 5 in the illustrated example.
However, the accessory 3 is cooled by supplying cooling water to these cooling pipes 5 so that the accessory 3 can be sufficiently cooled.

A diverter 7 is connected to each of the cooling pipes 5 of the water cooling jacket 4 via a conduit 6, and a merger 9 is connected to each of their outlets via a conduit 8. ing. The combiner 9 and the flow divider 7 are connected by a cooling water circulation pipe 10, and a cooler 11, a cooling water tank 12 and a pump 13 for sequentially cooling the cooling water in the cooling water flow direction are interposed in the cooling water circulation pipe 10. The cooling water from the combiner 9 is cooled by the cooler 11 and then collected in the cooling water tank 12 and is supplied from the tank 12 to the flow divider 7 by the pump 13 to a pressure lower than the pressure in the high-temperature high-pressure container (for example, about The cooling water circulates at 10 kgf / cm ² ).

The flow divider 7 and the flow combiner 9 are provided with a shutoff valve for shutting off the cooling pipe 5 by the pressure of the high-pressure fluid flowing from the cooling pipe 5. Specifically, for example, in the case of a confluencer, as shown in FIG. 2, the main body 15 is formed in a pipe shape, and both ends facing each other are formed as an inlet portion 16 to which the conduit 8 is connected. , This body 1
An outlet portion 17 to which the cooling water circulation pipe 10 is connected is formed in the center of the shaft 5 at a right angle to the axial direction thereof. Body 1
In the center of 5 is a packing 18 that is movable in the axial direction.
A reversible stem 19 is provided through the reversible stem 19, a shielding portion 20 is provided at the center of the reversible stem 19, and a plurality of ports 21 are provided on both sides of the shielding portion 20. In addition, the reversible stem 19
One end of a seat 22 is screwed into both ends of the seat 22, and one end 22a of the seat 22 is formed to be inclined so as to be seated on a valve seat portion 23 provided in the main body 15 and configured as a shutoff valve 24. Has been done. The other end of the seat 22 is attached to a spring 26 provided in the inlet portion 16 via a packing 25, respectively, and when the fluid pressures flowing into the inlet portion 16 are almost the same, the reversible stem 19 is attached to the main body 1.
5 is arranged at the center of the valve 5 so that the fluid flows from the inlet portion 16 through the port 21 into the main body 15 as shown in FIG. If they are different, the reversible stem 19 moves to the lower pressure side, and the inclined end 22a of the seat 22 moves to the position shown in FIG.
As shown in FIG. 5, the valve seat portion 23 is seated, and the inflow of high-pressure fluid into the main body 15 is blocked.
In addition, since the merging device can be used as a shunting device, the shunting device and the shunting device are used together in this embodiment.
That is, when the combiner is used as a flow divider, the inlet in the case of the flow divider becomes the outlet in the case of the flow divider, the inlet and the outlet are reversed, and the fluid flows in the opposite direction of the arrow shown in the figure.
It acts to divide the cooling water, and even in this case, when the high-pressure fluid flows into the outlet, the reversible stem moves to the lower pressure side, and the inflow of the high-pressure fluid into the main body is blocked.

Now, when the gasification furnace 1 is in operation, as shown in FIG. 1, the cooling water in the cooling water tank 12 is
The flow divider 7 is passed through the cooling water circulation pipe 10 by the pump 13.
To the cooling pipe 5 of the water cooling jacket 4 via the conduits 6. Thereby, the cooling water flows through the cooling pipe 5, and the accessory 3 is cooled. The cooling water that has taken the heat of the accessory 3 and has risen in temperature enters the confluence device 9 from the cooling pipe 5 through the conduit 8 and then merges, is cooled by the cooler 11 through the cooling water circulation pipe 10, and is then attached again. Return to the cooling water tank 12 to contribute to the cooling of the product 3.

During this operation, even if one of the cooling pipes 5 of the water cooling jacket 4 is damaged due to some cause, and high pressure gas in the gasification furnace 1 flows into the cooling pipe 5 from the damaged portion, the high pressure The gas does not leak to the outside, and the accessory 3 can be cooled.

That is, the pressure of the cooling water supplied to the one cooling pipe 5 of the water cooling jacket 4 (about 1
High pressure gas (about 20-40kgf / c) higher than 0kgf / cm ²
When m ² ) enters, the high pressure gas flows in the cooling pipe 5 due to the difference in pressure, and then flows into the combiner 9 and the flow divider 7. Here, since the flow combiner 9 and the flow distributor 7 have the same structure, only the case of the flow combiner 9 will be described and the description of the flow distributor 7 will be omitted.

When high-pressure gas flows into the combiner 9, the fluid pressures flowing into the inlets 16 are different and the pressure balance is lost, so that the pressures of the fluids flowing into the two inlets 16 are almost the same, as shown in FIG. In this case, the reversible stem 19 located in the center of the main body 15 moves to the lower pressure side, and the inclined end 22a of the seat 22 is seated on the valve seat portion 23 as shown in FIG. As a result, the seating and the packings 18, 25 block the inflow of the high-pressure gas into the main body 1, and the outflow of the high-pressure gas to the outside is blocked by the merger 9.

As described above, since the outflow of the high pressure gas is blocked by the merging device 9 and the flow divider 7, the high pressure gas does not flow out through the cooling pipe 5.

When the reversible stem 19 moves and the inclined end 22a of the seat 22 is seated on the valve seat portion 23, the seat 2 on the seat 22 side is seated as shown in FIG.
Although 1 is closed, the port 21 on the opposite side is open, so that the cooling water continues to flow through the other cooling pipe 5 to cool the accessory 3.

Therefore, even if the cooling pipe 5 of the water cooling jacket 4 is damaged, there is no possibility that the high-pressure fluid will flow out through the damaged pipe 5 and the accessory 3 will be installed by the other cooling pipe 5. Since it will be cooled, the operation can be continued without an emergency stop. Therefore, if the operation is completed in a short period of time, the operation can be safely continued until after the operation is completed, the cooling pipe 5 can be repaired after the operation is completed, and the operation due to the damage of the cooling pipe 5 can be performed. Has almost no effect.

In the present embodiment, the case where there are two cooling pipes has been described, but the number of cooling pipes is not limited to this, and the number of cooling pipes can be arbitrarily determined. Further, the flow divider and the flow combiner may have any structure as long as the cooling pipe for the fluid is shut off by the pressure of the high-pressure fluid.

[0021]

In summary, according to the present invention, the accessory is provided with a water cooling jacket having a plurality of cooling pipes, and the flow divider and the merger provided at the inlet and the outlet of the cooling pipe of the water cooling jacket are damaged. Since a shut-off valve that shuts off the cooling pipe by the pressure of the high-pressure fluid flowing from the cooling pipe is provided, even if the cooling pipe of the water cooling jacket is damaged, the high-pressure fluid flows out to the outside through the damaged pipe. There is no fear, and the accessory is cooled by the other cooling pipe, so that there is an excellent effect that it is not necessary to stop the operation urgently.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an example of the merger of the present invention.

FIG. 3 is a cross-sectional view showing a state in which a high-pressure fluid has flown into one inlet portion of FIG.

[Explanation of symbols] 1 Gasification furnace (high temperature and high pressure vessel) 3 Accessories 4 Water cooling jacket 5 Cooling pipe 7 Divider 9 Combiner 24 Shut-off valve

Claims (1)

[Claims] 1. A cooling device for an accessory such as a burner provided in a high-temperature high-pressure container, wherein the accessory is provided with a water cooling jacket having a plurality of cooling pipes, and a diverter is provided at an inlet of the cooling pipe of the water cooling jacket and an outlet thereof. A cooling device for an accessory of a high-temperature high-pressure container, characterized in that a converging device is provided in the concentrator ..