Filtering bag applied to rotary cement kiln tail

Abstract

The invention discloses a filtering bag applied to a rotary cement kiln tail. The filtering bag comprises a filtering bag body and a mounting ring, wherein the filtering bag body is formed in a way that a mounting section, a middle section and an initial section are detachably connected with one another in sequence; the other end of the mounting section is connected with the mounting ring; the middle section is formed by sewing two layers of glassfibre bulky yarns, and ring-shaped cavities encircling the circumference of the middle section are arranged between the two layers of glassfibre bulky yarns of the middle section at intervals; an openable opening is longitudinally formed in the middle section, and two sides of the opening are connected through a connecting device; aluminium hydroxide powder is filled in the ring-shaped cavities. With the technical scheme, the filtering bag is convenient to disassemble and assemble and to be subjected to soot cleaning; in case part of the filtering bag is worn, the whole filtering bag is not required to be replaced, and as a result, the production cost is reduced. Moreover, a cavity structure is added to the middle section of the filtering bag and is filled with the aluminium hydroxide powder, so that fluorine substances in tail gas can be effectively adsorbed, and accordingly, the filtering effect of the filtering bag is further improved.

Description

technical field [0001] The invention relates to a filter bag, in particular to a filter bag for the kiln tail of a cement rotary kiln. Background technique [0002] The problem of environmental pollution in cement plants, especially the problem of dust pollution, has always been a serious problem in the cement manufacturing industry. In the new dry process cement production line, the kiln head and kiln tail of the cement rotary kiln are the largest sources of dust pollution in the cement plant, and the total waste gas from the kiln head and kiln tail accounts for about 60% of the total waste gas in the whole plant. The main characteristics of the dust at the tail of the rotary cement kiln in the cement plant are: fine particle size (average dust particle size 1-30μ), high humidity, high flue gas temperature and large fluctuations, and high dust inlet concentration. [0003] At present, most domestic cement plants use electrostatic precipitators for dust removal, which are c...

AI Technical Summary

Problems solved by technology

The existing filter bags for cement rotary kilns have single function, and because the filter bags are too long, they cannot be disassembled or assembled.

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