Calculation and real-time monitoring method for blast furnace tuyere rotation zone boundary
A real-time monitoring and swing zone technology, applied in the field of blast furnace ironmaking technology, can solve the problems of difficult real-time monitoring, long time consumption, inability to reflect the experimental model well, and achieve the effect of ensuring the safety of life and property
A real-time monitoring and swing zone technology, applied in the field of blast furnace ironmaking technology, can solve the problems of difficult real-time monitoring, long time consumption, inability to reflect the experimental model well, and achieve the effect of ensuring the safety of life and property
CN113283079APending Publication Date: 2021-08-20NORTHEASTERN UNIV
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[0046] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0047] The blast furnace tuyere swirl area is formed as figure 1 As shown, in the blast furnace ironmaking process, the blast has strong kinetic energy when it leaves the tuyere. It blows the coke in front of the tuyere and reacts with it, forming a loose and approximately elliptical gas phase cavity at the front edge of the tuyere. . In addition, the gas flow in front of the tuyere takes the swirl area as the radiation center, and develops along the center of the hearth in the long radial direction, and develops along the two sides of the short radial direction. The carbon revolves in the cavity, and this area is the blast furnace tuyere swirling area. In this embodime...
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The invention provides a calculation and real-time monitoring method for a blast furnace tuyere rotation area boundary, and relates to the technical field of blast furnace ironmaking processes. The method comprises the following steps: firstly, establishing a depth calculation model of a convolution region according to a forming principle of the blast-furnace tuyere convolution region to obtain a calculation formula of the depth of the convolution region and obtain a change rule of the depth of the convolution region; establishing a boundary model of the blast-furnace tuyere convolute area through the depth model of the blast-furnace tuyere convolute area, and determining a calculation formula of the boundary of the convolute area; then obtaining modeling parameters, analyzing the influence of the modeling parameters on the convolution region boundary model, and determining main parameters influencing the convolution region boundary; and finally, calculating the height of the convolution region by using a convolution region boundary calculation formula. And when the height or the depth of the convolution area exceeds a set range, the height or the depth of the convolution area is recovered to a normal range by adjusting the blast air pressure and the blast air volume. The method can monitor the change conditions of the depth and boundary of the convolution area in real time, and provides safety guidance for actual production of the blast furnace.
Description
technical field [0001] The invention relates to the technical field of blast furnace ironmaking technology, in particular to a calculation and real-time monitoring method for the boundary of a tuyere swirl area of ββa blast furnace. Background technique [0002] In blast furnace ironmaking production, high-temperature and high-speed air is blown into the blast furnace through the blast furnace tuyere. Due to the effect of the blast, a coke is formed near the front of the tuyere and circulates within it, which is the blast furnace tuyere swirl area. Among them, the tuyere swirl area is located at the front end of the tuyere in the lower part of the shaft furnace body, and is formed by the violent combustion reaction of coke, auxiliary fuel injected into the furnace and oxygen in the blast. The mixed air flow of blast and gas circulates in this area, accompanied by the high-speed rotation of fine coke particles and unburned coal powder, and the burning process of broken coke d...
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Patent Timeline
20 Aug 2021
Publication
CN113283079A
- IPC
- G06F30/20; G06F113/08; G06F119/08
- CPC
- G06F30/20; G06F2113/08; G06F2119/08; G06F30/27
- Inventors
- εεΉζ; ζθ±ͺ