JPS6014744Y2 - Coke cutting device for coke dry extinguishing equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a coke cutting device for coke dry fire extinguishing equipment, and in particular, it discharges coke powder and circulating gas leaking into the cutting valve case when the cutting valve operates to the outside of the system. In particular, the present invention relates to a coke cutting device that can prevent coke breeze from agglomerating in a discharge passage due to condensation of water contained in circulating gas.

In general, coke dry extinguishing equipment is constructed as shown in Figure 1, in which a red-hot coke moving bed is formed in the fire extinguishing tower 1, and cooling gas is introduced from the bottom in countercurrent to the moving bed to cool it. , the cooled coke is cut out from the cutting port 2.

A coke cutting device 5 including a cutting valve 3, an intermediate bunker 4, etc. is provided below the cutting port 2, and the cut coke is dropped onto a discharge conveyor 6 through these and transported. Become.

By the way, as shown in FIG. 2, the cutoff valve 3 is connected to the fire tower 1.
An opening 7 is formed in the lower circumferential wall of the opening 7. The opening 7 is configured to open and close the cutting port 2 as a plate-shaped valve that can freely extend and retract from the opening 7.

Further, a cut-out valve case 8 for housing the cut-out valve 3 when the cut-out port 2 is opened is fixedly provided on the peripheral outer wall of the lower part of the fire extinguishing tower 1.

However, as the cut-out valve 3 moves in and out of the gap between the cut-out valve 3 and the opening 7, powdered coke and circulating gas used for cooling leak into the cut-out valve case 8. It was necessary to discharge this to maintain smooth operation.

Therefore, a discharge pipe 9 is connected to the rear end of the cut-out valve case 8,
It is discharged by falling naturally onto the discharge conveyor 6 via the discharge valve 10.

Moreover, the discharge valve 10 is used to maintain airtightness inside the fire tower 1.
are arranged in two stages in series, and are configured to operate alternately.

However, since the structure is such that the coke breeze and circulating gas leaked into the cutoff valve case 8 are discharged when a certain amount accumulates in the discharge pipe 9, during that time they are cooled by the outside air and the circulating gas The moisture contained therein condenses inside the discharge pipe 9, and this condensation water causes the coke breeze to coagulate and adhere to the inner wall surface of the discharge pipe 9.

There is a problem in that the coagulated coke breeze gradually grows and eventually blocks the inside of the discharge pipe 9, impairing its discharge function.

In view of the above-mentioned problems, the present invention has been devised to effectively solve the problems.

Therefore, the purpose of this invention is to prevent the condensation of moisture contained in the circulating gas when discharging coke breeze and circulating gas leaking into the cutout valve case from the system when the cutoff valve operates. An object of the present invention is to provide a coke cutting device for a coke dry extinguishing equipment that can prevent coke from coagulating and clogging the discharge passage.

Next, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 3 shows a coke cutting device according to the present invention. Reference numeral 11 denotes a weighing hopper constituting the lower end of the fire extinguishing tower. An opening 7 is provided in the side wall 12 of the weighing hopper. A plate-shaped cut-out valve 3 that can freely move in and out is provided in the hopper 11.

The cut-out valve 3 has an outer part of the weighing hopper 11 housed in a cut-out valve case 8, and the cut-out valve case 8 is attached to the outer periphery of the side wall 12 of the weighing hopper 11 so as to cover the opening 7. There is.

A discharge pipe 9 is provided at the lower end of the cut-out valve case 8 as a discharge passage to discharge coke powder etc. leaked into the cut-off valve case 8 to the outside of the system.
are connected and hang down approximately vertically.

Further, a discharge valve 10 is provided in the middle of the discharge pipe 9, and is arranged in two stages in series so as not to impair the airtightness within the fire extinguishing tower when opened and closed.

In order to forcibly heat the discharge pipe 9, a pipe 13 for passing a high temperature circulating gas (approximately 250°C) is wound spirally around the discharge pipe 9 as a heating means.
3 is taken out from the upper end of the cut-out valve case 8 via a flow rate regulating valve 14 such as a solenoid valve, and is configured to introduce leaked circulating gas into the cut-out valve case 8 .

Further, a heat insulating material 14 is further lagged over the heating pipe 13 wrapped around the discharge pipe 9.

The temperature inside the exhaust pipe 9 only needs to be kept above the dew point of the circulating gas present therein, and in order to maintain the minimum necessary amount of heating for this purpose, a thermometer 15 with a contact is installed inside the exhaust pipe 9. The flow rate adjustment valve 17 is connected to and controlled by the flow rate adjustment valve 17.

Next, the operation of the present invention will be explained.

The coke cooled in the fire extinguishing tower is opened by the cut-off valve 3, and falls naturally from the weighing hopper 11 through a coke cut-out device such as an intermediate bunker 4 onto the discharge conveyor 6, and is transported thereby.

When this cut-off valve 3 is opened and closed, it slides from the opening 7 toward the center of the weighing hopper 11 so that the coke powder comes out from the gap between the cut-out valve 3 and the opening 7. And the circulating gas leaks into the cut-off valve case 8.

The coke breeze flows down inside the cutoff valve case 8, flows into the discharge pipe 9, is stopped by the discharge valve 10, and gradually accumulates.

Regarding the circulating gas, since the discharge pipe 9 is heated and kept warm, although it remains there for a while, it is not cooled below the dew point, and dew condensation is prevented.

Therefore, since the coke powder cannot absorb moisture, it does not coagulate and maintains its powder form, and when the discharge valve 10 is opened, it does not block the discharge pipe 9 and falls naturally onto the discharge conveyor 6, and its discharge proceeds smoothly. .

Furthermore, the temperature inside the exhaust pipe 9 is constantly monitored by a thermometer 15 with contacts, and the opening and closing of the flow rate regulating valve 17 is controlled so that the circulating gas within the exhaust pipe 9 is not cooled below the dew point.

Therefore, when the flow rate regulating valve 17 is opened, the circulating gas leaked into the cut-out valve case 8 flows through the heating pipe 13 and heats the discharge pipe 9 so as to maintain a predetermined temperature.

In this embodiment, circulating gas was reused as the heating means, but steam may be introduced into the heating piping 13 from a separate system 16 as shown by the imaginary line in the figure, or alternatively,
An electric heater may be wrapped instead of the heating piping.

As is clear from the above description, the present invention provides the following excellent effects.

1. It is possible to control the temperature inside the exhaust passage and prevent condensation of the circulating gas present therein.

2. Therefore, it is possible to prevent coke breeze from condensing due to condensation water and clogging the discharge passage.

3. The airtightness of the discharge valve is improved and gas leakage is prevented.

4. Circulating gas can be reused as a heat source for the heating means, contributing to energy savings.

5. The structure is simple and can be easily adopted.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing a schematic configuration of coke dry consumption equipment to which the present invention is adopted, Fig. 2 is a side sectional view showing a conventional example of the present invention, and Fig. 3 is an implementation of the present invention. It is a side sectional view showing an example. In addition, in the figure, 3 is a cut-off valve, 9 is a discharge passage illustrated as a discharge pipe,
Reference numeral 13 denotes a heating means exemplified by heating piping.

Claims (1)

[Scope of utility model registration request] In a coke cutting device of a coke dry fire extinguishing equipment, the coke cutting device has a discharge passage for discharging coke powder leaking out of the system when the cutting valve operates, and the discharge passage has a 1. A coke cutting device for a coke dry extinguishing equipment, characterized in that a heating means is provided for heating to prevent condensation and agglomeration of coke powder leaked into the coke cutting device.