Fuel gas injection and distribution device and control method thereof

Abstract

The invention relates to a gas injection and distribution device and a control method thereof, and belongs to the technical field of sintering equipment. The fuel gas injection and distribution devicecomprises an injection cover, an injection branch pipe, multiple layers of injection pipe rows, a charge level negative pressure detector and a control system. One end of the injection branch pipe isconnected with an air source, and the other end of the injection branch pipe is provided with a plurality of branch pipes; The multiple layers of injection pipe rows are in one-to-one correspondencewith the multiple branch pipes respectively, the multiple layers of injection pipe rows are distributed at intervals in the Z direction, and each layer of injection pipe row is connected with one branch pipe through a flow control valve; the charge level negative pressure detector is arranged at the upstream of the injection cover and is used for detecting the charge level negative pressure of thesintering charge of a sintering machine trolley to enter the injection cover; and the control system is electrically connected with the charge level negative pressure detector and the flow control valves, and the control system is used for controlling the flow control valves to work in response to a charge level negative pressure value detected by the charge level negative pressure detector so asto realize fuel gas injection of at least one layer of injection pipe row. The fuel gas injection and distribution device is good in auxiliary effect and high in safety coefficient.

Description

technical field

[0001] The present application relates to the technical field of sintering equipment, in particular, to a gas injection and distribution device and a control method thereof. Background technique

[0002] The sintering process is a key link in the ironmaking process. Its principle is to mix various powdery iron-containing raw materials with an appropriate amount of fuel and flux, add an appropriate amount of water, mix and pelletize the material on the sintering equipment to make the material A series of physical and chemical changes, sintered into blocks, which are sent to the blast furnace for the next step.

[0003] In order to reduce the coke ratio and smelting cost of blast furnace ironmaking, blast furnaces often require high strength and high reducibility for sintered ore. Therefore, during the sintering process, it is generally necessary to inject fuel on the surface of the sintered material to improve the strength and reducibility of the sintered mat...

Examples

Embodiment Construction

[0051]In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0052] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art wi...

technical field

[0001] The present application relates to the technical field of sintering equipment, in particular, to a gas injection and distribution device and a control method thereof. Background technique

[0002] The sintering process is a key link in the ironmaking process. Its principle is to mix various powdery iron-containing raw materials with an appropriate amount of fuel and flux, add an appropriate amount of water, mix and pelletize the material on the sintering equipment to make the material A series of physical and chemical changes, sintered into blocks, which are sent to the blast furnace for the next step.

[0003] In order to reduce the coke ratio and smelting cost of blast furnace ironmaking, blast furnaces often require high strength and high reducibility for sintered ore. Therefore, during the sintering process, it is generally necessary to inject fuel on the surface of the sintered material to improve the strength and reducibility of the sintered mat...

Examples

Embodiment Construction

[0051]In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0052] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art wi...

Images