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Method and system for determining effective air quantity

A method for determining air volume and a technology for determining effective air volume, which can solve problems such as accelerating sintering speed, wasting electric energy and heat energy, and increasing energy consumption

Active Publication Date: 2014-09-03
ZHONGYE-CHANGTIAN INT ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The air volume value is an estimated value. Since it is impossible or difficult to detect the size factor of the air volume actually required to participate in the physical and chemical reactions of materials in real time, the main exhaust system cannot adjust the fan according to actual needs, so the main air volume capacity is too large during normal production. It is necessary to organize production by closing the main exhaust door or increasing the sintering speed, but closing the main air door actually increases the system resistance and increases energy consumption, and increasing the sintering speed actually increases the invalid air volume and wastes electric energy and heat energy

Method used

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  • Method and system for determining effective air quantity
  • Method and system for determining effective air quantity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 1 It is a flow chart of the method for determining the effective air volume provided in Embodiment 1.

[0033] In this embodiment, an air volume detection device is directly installed in the large flue, and the air volume detection device is used to detect the air volume of the large flue. Such as figure 2 As shown in the figure, 1 is a trolley, 2 is a large flue, 3 is a bellows, and 4 is an air volume detection device, and the air volume detection device 4 is arranged in the large flue 2 .

[0034] Such as figure 1 As shown, first in step S101: detecting the large air volume of the flue. Next in step S102: detecting the smoke components of the large flue.

[0035] During the sintering process of the material layer, the oxygen in the air volume generated by the main exhaust fan will not be completely consumed, but only a part of the oxygen will participate in the sintering reaction. Therefore, the oxygen consumption of the material during the sintering proce...

Embodiment 2

[0056] image 3 It is a flow chart of the method for determining the effective air volume provided in the second embodiment.

[0057] according to image 3 , the method is first at S201: detecting the air volume of the large flue, and then at S202: detecting the smoke components in the unit volume of smoke in the large flue at a preset time interval.

[0058] In this embodiment, the flue gas component in the flue gas per unit volume in the large flue is O in the flue gas per unit volume 2 , CO, CO 2 , N 2 , NO, NO 2 content. When detecting the flue gas composition of the large flue, the flue gas composition of the large flue is detected according to the preset time interval, and the detection of the system load stability can also be realized. When the flue gas composition of the large flue detected according to the time interval changes greatly, it indicates that the system load stability is poor, or there is a device failure in the system. If the system load stability ...

Embodiment 3

[0072] Figure 4 It is a flowchart of a method for determining an effective air volume provided in Embodiment 3.

[0073] like Figure 4 As shown, the method includes:

[0074] S301: Detecting a large flue air volume.

[0075] S302: Detect the smoke components of the large flue.

[0076] S303: Calculate the effective wind rate of the large flue according to the detected smoke components.

[0077] S304: Calculate the effective air volume of the large flue.

[0078] In this embodiment of the present application, steps S301-S304 are equivalent to steps S101-S104 in Embodiment 1. For detailed descriptions of steps S301-S303, please refer to the description of steps S101-S104 in Embodiment 1 above, which will not be repeated here.

[0079] S305: Calculate the volume of the material on the trolley.

[0080] Referring to the description in the above step S104, it can be seen that the effective air volume Q of the large flue 有效 It is the effective air volume of the material roa...

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Abstract

The invention discloses a method and a system for determining effective air quantity. The method comprises the following steps of: detecting the air quantity of a large flue and smoke components of the large flue; calculating an effective air rate of the large flue according to the detected smoke components; calculating the effective air quantity of the large flue, wherein the effective air quantity is equal to the product of the air quantity of the large flue multiplying the effective air rate of the large flue; and determining the effective air quantity of unit material. By the method, through the air quantity of the large flue and the smoke components of the large flue actually detected in the roasting process of the material, the effective air quantity of the unit material is obtained through calculation; and compared with the existing estimated value, the effective air quantity of the unit material is accurate.

Description

technical field [0001] The present application relates to the technical field of sintering technology, in particular to a method for determining effective air volume. Background technique [0002] With the rapid development of modern industry, the scale of steel production is getting larger and larger, and energy consumption is also increasing. Energy conservation and environmental protection indicators have become an important factor in the steel production process. In iron and steel production, iron-containing raw material ore needs to be processed by sintering system before entering blast furnace smelting. , placed on the sintering trolley and roasted to cause a series of physical and chemical changes to form sintered ore that is easy to smelt. This process is called sintering. [0003] The main exhaust fan is the largest power consumption equipment in the sintering plant. The existing main exhaust fan is usually designed according to the maximum production capacity, but...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B21/14
Inventor 袁立新孙超申伟杰卢杨权高鹏双
Owner ZHONGYE-CHANGTIAN INT ENG CO LTD
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