Waste heat utilization device of circular cooler
By designing the waste heat utilization device of the ring cooler, the waste heat is used in the pellet drying process, which solves the problems of poor drying effect and waste of heat sources in pellet production, and achieves reduction in energy consumption and production costs.
Patent Information
- Application Number
- CN202420081374.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-01-12
AI Technical Summary
During the pellet production process, the raw material moisture has a great impact on the pellet making and roasting process, resulting in limited drying effect and increased production costs. The third and fourth sections of the ring-cooling machine have not been recycled, wasting potential heat sources.
Design a kind of ring cold machine waste heat utilization device. Through the newly-built wind pipeline, the three and four-stage heat wind (200-300 ° C) of the roasted ring cold machine instead of the natural air and transport it to the cylindrical dried machine to supplement the drying dryer to supplement the drying drying Weets and temperatures, recycling remaining heat.
It improves the pellet drying effect, reduces the consumption of drying blast furnace gas, reduces comprehensive energy consumption and production costs, and achieves full recovery and utilization of waste heat.
Smart Images
Figure CN222393369U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sintering pellet production, in particular to a ring cooler waste heat utilization device. Background Art
[0002] During the pelletizing process, the moisture content of the raw materials has a great influence on the pelletizing and roasting processes. In the pelletizing process, a drum dryer is generally set up to dry the iron ore concentrate raw materials. Its production capacity is ≥450t / h (moisture content is reduced from 11% to ≤8%). The drum dryer is equipped with a blower to blow natural wind into the drum to drive the hot air to move in the direction of the material flow; as the amount of material increases, the heat required for drying also increases, the drying effect is limited, and the production cost of the pelletized ore increases.
[0003] Usually, a sintering ring cooler is equipped with four blowers for cooling. The hot air from the first and second stages of the ring cooler is used for power generation in the waste heat boiler and the sintering machine insulation cover, while the hot air from the third and fourth stages is directly discharged without recycling this part of the residual heat source. Summary of the invention
[0004] In view of the above problems, the purpose of the present utility model is to provide a waste heat utilization device for a ring cooler.
[0005] The technical solution adopted by the utility model is as follows:
[0006] The utility model proposes a ring cooler waste heat utilization device, which includes a sintering ring cooler, a pellet drying chamber and a blower thereof; the device also includes an air delivery pipeline; one side of the air delivery pipeline is connected to the blower of the pellet drying chamber, and the other side is respectively connected to the third and fourth stage hot air exhaust ports of the sintering ring cooler.
[0007] Compared with the prior art, the utility model has the following beneficial effects:
[0008] The utility model can replace natural wind with the third and fourth sections of the sintering ring cooler and transport the hot air at about 200-300°C to the pelletizing drum dryer. On the one hand, it supplements the drying air volume and temperature and improves the drying effect. On the other hand, it fully recycles the production waste heat, reduces the consumption of drying blast furnace gas, and reduces the comprehensive energy consumption and production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a schematic diagram of the overall structure of a ring cooler waste heat utilization device proposed by the utility model;
[0010] Figure 2 It is a structural diagram of the connection between the blower in the pellet drying chamber and the air delivery pipeline.
[0011] Among them, the figure marks are: 1-sintering ring cooler; 2-pellet drying chamber; 21-blower; 3-air supply pipeline. DETAILED DESCRIPTION
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] It should be noted that, in the description of the present invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation.
[0014] See attached Figure 1-2 , gives the specific structure of an embodiment of a ring cooler waste heat utilization device proposed in the utility model. The device includes a sintering ring cooler 1, a pellet drying chamber 2 and its blower 21; in the utility model, a new air duct 3 is built between the sintering ring cooler 1 and the pellet drying chamber 2; one side of the air duct 3 is connected to the blower 21 of the cylindrical dryer in the pellet drying chamber 2, and the other side is respectively connected to the third and fourth stage hot air outlets of the sintering ring cooler 1. The air duct 3 is fixed by a bracket, and valves and other measuring instruments can be installed on the air duct 3.
[0015] Through the newly built air supply pipeline 3, the hot air at about 200-300°C discharged from the third and fourth stages of the sintering ring cooler 1 can be transported to the cylindrical dryer in the pellet drying chamber 2 via the blower 21 instead of natural wind. On the one hand, it can supplement the drying air volume and temperature and improve the drying effect. On the other hand, it can fully recycle the waste heat produced by the sintering ring cooler 1, reduce the consumption of drying blast furnace gas, and reduce the comprehensive energy consumption and production costs.
[0016] Matters not described in detail in this utility model are all known technologies.
[0017] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.
Claims
1. A ring cooler waste heat utilization device, comprising a sintering ring cooler, a pellet drying chamber and a blower thereof; characterized in that: The device also includes an air delivery pipeline; one side of the air delivery pipeline is connected to the blower of the pellet drying chamber, and the other side is respectively connected to the third and fourth stage hot air outlets of the sintering ring cooler.