RU2605662C1 - Coal bin storage for metallurgical enterprise - Google Patents

Abstract

FIELD: metallurgy.

SUBSTANCE: invention relates to storage of bulk materials and can be used as coal bin storage for metallurgical enterprise. Bin storage includes coal silos, each of which consists of cylindrical part and conical funnel, in lower part of which there is a coal drawing device common conveyor for supply of coal for processing, that is connected to yields of coal drawing means. In silos, in the area of joint of cylindrical part and conical funnel, in three equidistant points temperature sensors are installed, which are connected to a temperature meter. Coal storage is equipped with inert deterrent feed system and water feed system for cooling of coal. At that nozzles to feed inert deterrent are installed in silos in the area of joint of cylindrical part and conical funnel at the points, equidistant from temperature sensors, and water feed nozzles are installed in groups under the corresponding silos along total conveyor for supply of coal for processing.

EFFECT: technical result consists in preventing coal self-ignition in coal silo storage without stopping the process of coal supply for further processing.

3 cl, 2 dwg

Description

The inventive object relates to the storage of bulk materials and can be used as a silo storage of coal for a metallurgical enterprise.

The closest set of features to the claimed object is the selected as a prototype silo storage of bulk materials (Ukrainian patent No. 1200, IPC B65G 3/00, publ. 15.04.2002, bull. No. 4).

The claimed object and prototype coincide with such essential features. Both devices include silos for coal, each of which consists of a cylindrical part and a conical funnel, in the lower part of which there is a means for issuing coal, a common conveyor for supplying coal for processing, which is connected to the outputs of the means for issuing coal.

Analysis of the technical properties of the prototype, due to its features, shows that the following reasons hinder the receipt of the expected technical result when using the prototype. In a known object during self-heating and spontaneous combustion of coal, it is discharged into an open area for cooling or extinguishing. In this case, the delivery of coal from the silo for the technological process is interrupted.

The claimed object is based on the task of creating such a silo storage of coal for a metallurgical enterprise, in which improvement by introducing new elements will allow using the inventive object to achieve a technical result consisting in preventing spontaneous combustion of coal in a silo without stopping the production of coal for the technological process of a metallurgical enterprise.

The inventive silo storage of coal for a metallurgical enterprise includes silos for coal, each of which consists of a cylindrical part and a conical funnel, in the lower part of which there is a means for issuing coal, a common conveyor for supplying coal for processing, which is connected to the outputs of the means for issuing coal.

A distinctive feature of the claimed object is the following. In silos, at the junction of the cylindrical part and the conical funnel, temperature sensors are installed in three equally distant places, which are connected to a temperature meter. The coal storage is equipped with an inert phlegmatizer supply system and a water supply system for cooling coal. In this case, nozzles for supplying an inert phlegmatizer are installed in silos in the area of the joints of the cylindrical part and the conical funnel in places equidistant from the temperature sensors. Nozzles for supplying water are installed in groups under appropriate silos along a common conveyor for supplying coal for processing.

The temperature sensors are connected to a serial temperature meter designed to measure and digitally display the temperature in degrees when working with an external temperature sensor. Coal silo can be equipped with individual temperature meters for each silo or a common multi-channel temperature meter. The alarm relay built into the temperature meter makes it possible to use the temperature meter as an emergency device and automatically turn on the necessary alarm systems when the temperature reaches the set value.

Nitrogen, carbon dioxide or water vapor may be used as an inert phlegmatizer.

In special cases of execution of the claimed object is characterized in that

- the silo storage is equipped with an alarm system that signals the beginning of the inert phlegmatizer supply to the silo;

- the silo is equipped with a feed system of such an inert phlegmatizer as carbon dioxide.

When using the inventive facility, it is possible to achieve a technical result consisting in preventing spontaneous combustion of coal in a silo storage of coal for a metallurgical enterprise without stopping the technological process of supplying coal for further processing.

Between the set of essential features of the claimed object and the achieved technical result there is such a causal relationship.

Installation in silos, at the junction of the cylindrical part and the conical funnel, in three equidistant temperature sensors connected to the temperature meter, equipping the coal storage with an inert phlegmatizer supply system, while nozzles for supplying an inert phlegmatizer are installed in silos at the junction of the cylindrical part and conical funnel in places equidistant from temperature sensors, equipping the coal storage with a water supply system for cooling coal, while nozzles for supplying water are installed By groups under appropriate silos along a common conveyor for feeding coal for processing, it is possible to ensure constant monitoring of the temperature of coal in three places along the cross section of each silo, and if this temperature exceeds the permissible value, then coal is not unloaded to an open area for cooling or extinguishing, as in the prototype, and on three sides uniformly in cross section feed into this silo an inert phlegmatizer that does not support combustion and contributes to the preliminary cooling of coal.

In this case, the inert phlegmatizer is supplied only to the silo, in which the temperature sensors were activated, and the water supply over the general material conveyor is carried out only by a group of nozzles belonging to the area under this silo, which makes it possible to not interrupt the coal supply process for further processing.

The number of silos equipped with this system in the coal storage is not limited.

Equipping the silo storage with an alarm system, for example, an audible alarm that signals the start of the inert phlegmatizer supply to the silo, allows the maintenance personnel to be notified in case of an emergency.

Equipping the silo storage system with a feed system of such an inert phlegmatizer as carbon dioxide makes it technologically easy to replace air that supports combustion in a silo in which coal is self-heating with available carbon dioxide that does not support combustion and whose heat capacity is much higher than that of air, which helps accelerate the cooling of coal.

The essence of the claimed object is illustrated by drawings, which depict:

- in FIG. 1 is a schematic general view of a coal silo for a metallurgical enterprise;

- in FIG. 2 is a cross section of silos at the junction of the cylindrical part and the conical funnel.

In the drawings, the following notation is used:

1 - silo;

2 - cylindrical part;

3 - conical funnel;

4 - means of issuing coal;

5 - silo;

6 - means of issuing coal;

7 - silo;

8 - means of issuing coal;

9 - common conveyor;

10 - temperature sensor;

11 - temperature sensor;

12 - temperature sensor;

13 - temperature sensor;

14 - temperature sensor;

15 - temperature sensor;

16 - temperature sensor;

17 - temperature sensor;

18 - temperature sensor;

19 - nozzle;

20 - nozzle;

21 - nozzle;

22 - nozzle;

23 - nozzle;

24 - nozzle;

25 - nozzle;

26 - nozzle;

27 - nozzle;

28 - a group of nozzles for supplying water;

29 - a group of nozzles for supplying water;

30 - a group of nozzles for supplying water.

In a specific exemplary embodiment, the silo storage of coal for a metallurgical enterprise includes silo 1, which consists of a cylindrical part 2 and a conical funnel 3, in the lower part of which there is a means of dispensing coal 4. A silo 5 of similar design with coal dispensing means 6 is installed close to silo 1 and a silo 7 with means for issuing coal 8. Means for issuing coal 4, 6 and 8 are equipped with electric drives and provide regulation of the volume of coal supplied.

Under the silos 1, 5 and 7, there is a common conveyor 9 for feeding coal for processing, which is connected to the outputs of the coal dispensing means 4, 6 and 8. In silos, at the junction of the cylindrical part 2 and the conical funnel 3, in three equally spaced places in the openings silo housings are equipped with temperature sensors. For example, in silo 1 - temperature sensors 10, 11 and 12, in silo 5 - temperature sensors 13, 14 and 15, in silo 7 - temperature sensors 16, 17 and 18, which are connected to a multi-channel temperature meter. The coal storage is equipped with an inert phlegmatizer supply system. At the same time, nozzles for supplying an inert phlegmatizer are installed in the openings of the silo body at the junction of the cylindrical part and the conical funnel in places equidistant from the temperature sensors. For example, in silo 1 - nozzles 19, 20 and 21, in silo 5 - nozzles 22, 23 and 24, in silo 7 - nozzles 25, 26 and 27. Through nozzles 19-27, the inert phlegmatizer supply system supplies carbon dioxide from the cylinders with compressed gas to silos 1, 5 and 7.

The coal silo is equipped with a water supply system for cooling coal, which is connected to the cold water supply of a metallurgical enterprise, while the groups of nozzles for water supply 28, 29 and 30 are installed, respectively, practically under the silos 1, 5 and 7 along the common conveyor 9 for feeding coal for processing.

In addition, the coal silo is equipped with a standard alarm system, which, with the help of the operator or automatically gives an audible signal to start supplying an inert phlegmatizer to the silo (not shown in the drawings).

In a specific example, a silo storage of coal for a metallurgical enterprise operates as follows.

Coal is loaded into silos 1, 5 and 7 for storage. The required amount of coal for the technological process at the metallurgical enterprise is supplied from the silo storage to the general conveyor 9 from silos 1, 5 and 7 sequentially or simultaneously through the means for issuing coal 4, 6 and 8. The current temperature of the coal in silo 1 is monitored by temperature sensors 10, 11 and 12, in silo 5, by temperature sensors 13, 14 and 15, in silo 7, by temperature sensors 16, 17 and 18, which are connected to a multi-channel temperature meter. The operator can observe the current temperature of coal in each silo on the screen with a digital indication. When the temperature of coal rises, for example, in silo 1 to 50 ° C, to which the temperature meter is set, an alarm sounds and the operator turns on the inert phlegmatizer supply system to silo 1. At the same time, the operator activates an alarm (not shown), which gives an audible signal about the beginning of the inert phlegmatizer supply to the silo. Through nozzles 19, 20 and 21 from the cylinders with compressed gas to the silo 1 is fed carbon dioxide. In this case, the silos 5 and 7 with the means of issuing coal 6 and 8 continue to work in a given mode.

From silo 1, coal with elevated temperature falls on a common conveyor 9. In this case, the water supply system for cooling coal is turned on, and through a group of nozzles 28, which is installed along the general conveyor 9, practically under silo 1 and dispensing means 4, on coal with increased temperature is supplied cooling water.

If the temperature of the coal rises in silo 5, the temperature sensors 13, 14, 15 are triggered, carbon dioxide is supplied through nozzles 22, 23, 24, and water is supplied through a group of nozzles for supplying water 29 on the conveyor 9.

With an increase in the temperature of coal in the silo 7, temperature sensors 16, 17, 18 are activated, carbon dioxide is supplied through nozzles 25, 26, 27, and water is supplied through a group of nozzles for supplying water 30 on the conveyor 9.

As a result of exposure to coal with carbon dioxide in the volume of silo 1 and cooling water on a common conveyor 9, the temperature of coal from silo 1 decreases, its spontaneous combustion is prevented. This coal through a common conveyor 9 is sent for processing to a metallurgical plant without stopping the technological process of supplying coal for further processing.

In the worst case scenario, when coal is heated simultaneously in all silos, all of the above temperature sensors are triggered, carbon dioxide is supplied to all silos and coal on a common conveyor is cooled by water from all groups of nozzles for water supply.

When the temperature of coal increases to 50 ° C in silo 5 and 7, for example, simultaneously with the increase in coal temperature in silo 1, carbon dioxide is supplied to silo 5 through nozzles 22, 23 and 24, and to silo 7 through nozzles 25, 26 and 27 From coal silos 1, 5 and 7, coal with increased temperature is discharged through coal dispensers 4, 6 and 8 to a common conveyor 9, where it is cooled with cold water, which is fed through groups of nozzles for supplying water 28, 29 and 30. As a result of exposure to carbon dioxide in the volume of silos 1, 5 and 7 and cooling water on a common conveyor 9, temperature coal from silos 1, 5 and 7 is reduced, its spontaneous combustion is prevented, and this coal is sent to the metallurgical plant for processing through a common conveyor 9 without stopping the production of coal.

Claims (3)

1. Coal silo for a metallurgical enterprise, including coal silos, each of which consists of a cylindrical part and a conical funnel, in the lower part of which there is a means for issuing coal, a common conveyor for supplying coal for processing, which is connected to the outputs of the means for issuing coal, characterized in that in silos, at the junction of the cylindrical part and the conical funnel, in three equally distant places temperature sensors are installed, which are connected to a temperature meter, the coal storage is equipped with system of inert phlegmatizer supply and a water supply system for cooling coal, while nozzles for supplying an inert phlegmatizer are installed in silos at the junction of the cylindrical part and a conical funnel in places equidistant from temperature sensors, and nozzles for water supply are installed in groups under the corresponding silos along the common conveyor for supplying coal for processing. 2. The coal silo according to claim 1, characterized in that it is equipped with an alarm system that signals the start of the inert phlegmatizer supply to the silo. 3. A coal silo according to claim 1, characterized in that it is equipped with a feed system for such an inert phlegmatizer as carbon dioxide.

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