Oxygen-enriched combustion device of rotary cement kiln
A cement rotary kiln and oxygen-enriched combustion technology, which is applied in the field of cement rotary kiln, can solve the problems that affect the environmental flue gas emission rate, no reuse of flue gas, and low resource utilization rate, so as to improve the emission rate and efficient recovery Effects of utilization and reduction of operating costs
Inactive Publication Date: 2021-06-22
NANJING UNIV OF TECH
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Problems solved by technology
[0002] In order to ensure the normal combustion of the existing cement rotary kiln, most of them are equipped with an oxygen-enriched combustion device. As the name suggests, it is to fill the rotary kiln with oxygen to make the internal combustion faster and more fully. However, the existing oxygen-enriched combustion device has some defects. , first of all, after the internal fuel is burned, there is a part of incompletely combusted small particulate respirable matter, which seriously affects the surrounding environment and the qualified rate of flue gas emission. However, the existing oxygen-enriched combustion device does not reuse flue gas and the internal Auxiliary devices that burn particles lead to low resource utilization and indirect waste of resources
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[0019] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0020] Such as figure 1 , figure 2 , image 3 , Figure 4As shown, an oxygen-enriched combustion device for a cement rotary kiln includes a base 1, a dust removal box 2 is fixedly installed on the top of the base 1, a mounting plate 3 is fixedly mounted on the top of the dust removal box 2, and a mounting plate 3 is fixed on the top of the mounting plate 3. A rotary kiln 4 is fixedly installed, and a feed box 5 is fixedly connected to one side of the rotary kiln 4, and the feed box 5 communicates with the rotary kiln 4, and a backfill port 6 is arranged on a side wall of the feed box 5 , the rotary kiln 4 is covered with a cover body 7, the bottom end of the cover body 7 is fixedly connected with the top end of the mounting plate 3, one end of the feed box 5 passes outside the cover body 7, and the outer wall of the rotary kiln 4 side An ox...
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The invention discloses an oxygen-enriched combustion device of a a rotary cement kiln. The oxygen-enriched combustion device comprises a base, an ash removal box fixedly mounted at the top end of the base, a mounting plate fixedly mounted at the top end of the ash removal box, a rotary kiln fixedly mounted at the top end of the mounting plate, a feeding box fixedly connected to one side of the rotary kiln and communicates with the rotary kiln, and a backfilling opening formed in one side wall of the feeding box. According to the device, a backflow box, a flue gas discharge pipe, a backflow pipe and other structures are matched for use, so that the rotary kiln is in different oxygenation modes in three working stages, flue gas can be efficiently recycled and fully combusted, pollution to the environment is avoided, and the flue gas discharge qualification rate is increased; in addition, the cleaning box and other devices are arranged, particulate matter in the flue gas can be well collected and combusted again, and resources are reasonably utilized. Heat released by secondary combustible materials in the flue gas is used for heating a water storage tank, so that resources are reasonably utilized, and the overall operation cost is greatly reduced.
Description
technical field [0001] The invention relates to the field of cement rotary kilns, in particular to an oxygen-enriched combustion device for a cement rotary kiln. Background technique [0002] In order to ensure the normal combustion of the existing cement rotary kiln, most of them are equipped with an oxygen-enriched combustion device. As the name suggests, it is to fill the rotary kiln with oxygen to make the internal combustion faster and more fully. However, the existing oxygen-enriched combustion device has some defects. , first of all, after the internal fuel is burned, there is a part of incompletely combusted small particulate respirable matter, which seriously affects the surrounding environment and the qualified rate of flue gas emission. However, the existing oxygen-enriched combustion device does not reuse flue gas and the internal Auxiliary devices that burn particles lead to low resource utilization and indirect waste of resources. Contents of the invention ...
Claims
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IPC IPC(8): F27B7/34F27B7/36F27D17/00
CPCF27B7/34F27B7/36F27D17/008F27D17/002Y02P10/25
Inventor 黄逸飞考宏涛管郡蔚
Owner NANJING UNIV OF TECH