JPS62112685A - Method of collecting dust in coke oven - Google Patents

Abstract

PURPOSE:To economically collect dust with less power, by automatically opening or closing a damper provided on the side of a dust collector in accordance with the motion of an extrusion ram of an extruder. CONSTITUTION:A collecting duct 2 is provided along the direction of oven blocks A-C of a coke oven 1. A suction duct 4 having a dust collector 3 is connected to the middle part of the duct. The dust collector 3 is provided with a suction blower with a passage-intercepting damper 5. The collecting duct 2 is provided with a connector 10 having a damper 14 corresponding to each carbonization chamber 1. A connector 9 which can be connected to the connector 10 on the side of the collecting duct is provided on the side of a coke guide 7. In this area, the damper 5 on the side of the dust collector is automatically opened or closed in accordance with the motion of the extruder ram 6. Thus, the damper 5 on the side of the dust collector is opened only for a period (tens of seconds) during which powdery dust is produced due to the extrusion of coke, and is kept closed for a period (about several min) during which the discharge of the contents of the oven is ceased, so that the load of the dust suction blower is kept low, which contributes to a marked reduction in the overall electric power consumption.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for collecting dust generated in a coke oven when the coke oven is discharged from the oven.

[Conventional technology and its problems]

Generally, a large coke oven is composed of a plurality of furnace groups having tens to hundreds of carbonization chambers, and these carbonization chambers are sequentially loaded and discharged from the kiln.

In a coke oven, a large amount of dust is generated when red-hot coke is discharged from the oven, and a dust collection mechanism is provided to dispose of this dust.

This dust collection mechanism is equipped with a collection duct along the longitudinal direction of the coke oven (furnace group), and a dust collector (
A suction duct (with a blower and a blower) is connected to the furnace to suck out the dust generated during discharge from the kiln, and the collecting duct is provided with a connector corresponding to each carbonization chamber. On the other hand, a connector is installed on the coke guide car for guiding the coke pushed out to the fire extinguishing truck when the coke is discharged from the coke oven, and this connector is connected to a predetermined connector of the collection duct each time, and the dust generated by the discharge from the coke oven is removed. The dust is sucked into the collecting duct through both connectors, and then into the suction duct where it is collected by a dust collector.

However, in such a conventional dust collection mechanism, the kiln is discharged from one carbonization chamber at a time, and therefore, although dust is always generated only in one carbonization chamber, the suction by the dust collector covers a wide area of the collecting duct. In addition, it is necessary to continuously perform suction even during the time when dust is not generated between kiln exits, and this creates the problem that the suction blower consumes a large amount of power. there were.

The present invention was made in view of such conventional problems,
It is an object of the present invention to provide a method that can perform dust collection economically with less power.

[Means and embodiments for solving the problem] Therefore, the present invention provides a collection duct along the direction of a coke oven furnace having a plurality of furnace groups, and a dust collector with a damper in the middle part of the collection duct. Dust is collected by a dust collection mechanism that is connected to a suction duct having The basic feature is that the damper on the ticket collection machine side is automatically opened and closed based on the operation of the extrusion ram of the extruder.

In addition, the present invention blocks the collective duct for each furnace group by a damper for blocking the flow path provided at a position between each furnace group of the collective duct, and connects the damper for blocking the flow path to the collective duct where dust is to be sucked. Another basic feature is that the block is opened and closed depending on the block, and the damper for blocking the flow path and the damper on the dust collector side are automatically opened and closed based on the operation of the extrusion ram of the extruder.

The details of the present invention will be explained below based on FIG.

In the figure, (1) is a coke oven, and the coke oven (
1) consists of three furnace groups (A) to (C). A collection duct (2) is provided along the direction of the coke oven furnace, and a dust collector (3) is installed in the middle of the collection duct (2).
A suction duct (4) is connected thereto. The dust collector (3) is provided with a suction blower (not shown) and a damper (5) for blocking a flow path. The collective duct (2) is provided with a corresponding connector (10).
, each connector αq is provided with a damper α→ for blocking. Further, (6) is an extrusion ram of the extruder, and (7) is a coke guide car for guiding the coke pushed out from the extrusion ram onto the fire extinguishing engine (8) on the opposite side. 7) has the above-mentioned collective duct (2)
A connector (9) is provided to be connected to the connector. In other drawings, a and a are coal towers.

In the present invention, with the above configuration, the damper (5) on the dust collector side is automatically opened and closed based on the operation of the full extrusion ram (6).

Coke is discharged from the kiln by the extrusion ram (6), which takes several tens of seconds. The dust generated by ejecting from the kiln is limited to the tens of seconds during which the actual extrusion takes place.

On the other hand, the power consumption of the dust collector's suction blower differs significantly between when the damper on the dust collector side is open and when it is closed. In the present invention, paying attention to these facts, the damper (5) on the dust collector side is installed only when dust is generated.
The damper (5) on the dust collector side is automatically opened and closed based on the operation of the extrusion ram (6), with the aim of significantly reducing the power consumption of the suction blower of the dust collector by keeping the dust collector open and closed during the kiln unloading pause. to be carried out.

Because of this control based on the operation of the extrusion ram, the damper (5) on the dust collector side is opened only while dust is generated by coke extrusion (several tens of seconds), and while the kiln is not being discharged (several minutes). Since the dust collector is closed, the load on the dust collector suction blower is kept low during this time, and the overall power consumption is significantly reduced.

In addition to controlling the damper (5) on the dust collector side as described above, the present invention provides the following functions when a coke oven has three or more furnace groups:
By providing flow path blocking dampers (12a) and (12b) at the positions between each furnace group of the collective duct (2), the collective duct (2) can be divided into blocks for each furnace group (A) to (C). ,
The suction duct (4) is connected to the collective duct block corresponding to the middle furnace group (B), and the flow path blocking damper is opened and closed according to the collective duct block from which dust is to be sucked.

In other words, the coke is discharged from the coke oven by one or two extruders through all the furnaces (A) to (C), one carbonization chamber at a time.
,ru. In such an operating mode, when unloading the kiln in furnace group (A) or (B), the damper (12a) is opened;
The damper (12b) is closed; on the other hand, when unloading the furnace group (C), the damper (12b) is opened and the damper (12a) is closed.
) is closed.

By performing such damper control, the length range of the collecting duct to be sucked is shortened compared to the conventional one, and as a result, power saving is achieved by reducing the load on the dust collector suction blower. In addition, by opening and closing the dampers as described above for the three furnace groups (A) to (C), the length of the collection duct to be sucked is the same when unloading the kiln from any furnace group (
2/3 of the total length), and the dust collector suction blower is always operated under the same load conditions when dust is generated.

In addition, the damper (12a) (12
b) is preferably controlled to open and close in synchronization with the dust collector side damper (5), and for this reason, the collecting duct side damper (4)
2a) (121)) is also automatically opened and closed based on the operation of the extrusion ram (6).

By slamming each of the dampers in accordance with the operation of the extrusion ram, the dampers can be opened and closed in a timely manner in accordance with the start and end of discharge from the coke oven.

A specific example of opening and closing the damper will be explained based on FIG. 1. The damper (5) on the dust collector side is in a closed state when the kiln is not being unloaded when no dust is generated. When the extruder stops at a predetermined carbonization chamber position where kiln discharge is to be performed and the extrusion ram (6) starts, a ram start signal is sent to the damper control device (g), and the command signal of the damper control device (13) Based on the dust collector side damper (
5) is opened.

On the other hand, the collective duct side dampers (1za) (1zb) are also closed when the kiln is not being unloaded, and the furnace group (A
) or (B), the damper (12a
), but also a damper (
12b) is then opened.

In addition, the damper α is also closed when the kiln is not being unloaded and is opened based on the ram start signal, but since there is a time period of about 20 to 30 seconds from the start of the extrusion ram to the start of extrusion, there is a certain time width from the start of the ram. is set, and after a certain period of time has elapsed since the ram is started, a command signal is issued and the damper α◆ is opened.

On the other hand, at an appropriate stage after coke extrusion by the extrusion ram (6) is completed, a signal is sent to the damper control device (to), and based on the command signal from this damper control device (2), the dust collector side damper (5) , the collecting duct side damper (2) and the damper α♦ are closed.

〔Effect of the invention〕

According to the present invention described above, the gunpa on the side of the dust collector can be opened only while dust is being generated by coke extrusion, and can be kept closed while the kiln is not being discharged. The load can be kept low.

This has the effect of achieving significant power savings in this type of equipment. Moreover, according to the invention of one aN2, in addition to these effects.

By switching the damper installed in the collecting duct to open and close, the length range of the collecting duct to be sucked by the dust collector can be shortened, and the load on the suction blower can be reduced over time, resulting in greater power savings. .

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention. In the figure, (1) is a coke oven, (2) is a collection duct, (3) is a dust collector, (4) is a suction duct, (5) (12
a) (1zb) (14) is a damper, (6) is an extrusion ram, (7) is a coke guide group, and (A) to (C) are furnace groups.

Claims (2)

[Claims] (1) A collection duct is provided along the direction of the coke oven furnace having multiple oven groups, and an absorption duct with a dust collector with a damper is connected to the middle part of the collection duct. A connector with a corresponding damper is provided, and a connector on the coke guide car side that can be connected to the collecting duct side connector is used to collect dust. A method for collecting dust in a coke oven characterized by automatic opening and closing. (2) A collection duct is provided along the direction of the coke oven furnace having multiple oven groups, and a suction duct with a damper-equipped dust collector is connected to the middle part of the collection duct, and each carbonization chamber is connected to the collection duct. When collecting dust using a dust collection mechanism that is equipped with a connector with a corresponding damper and a connector on the coke guide car side that can be connected to the connector on the collecting duct side, the flow The collection duct is divided into blocks for each furnace group using a damper for blocking the flow path, and the damper for blocking the flow path is opened and closed according to the collection duct block from which dust is to be sucked, and the damper for blocking the flow path and the damper on the dust collector side are A method for collecting dust in a coke oven, characterized in that each of the following is automatically opened and closed based on the operation of an extrusion ram of an extruder.