Simple device and method for rapid entrained-flow bed sludge drying incineration
A technology of sludge drying and air-flow bed, which is applied in combustion methods, dehydration/drying/thickened sludge treatment, incinerators, etc., can solve the problems of high maintenance cost, large floor area, complex system, etc., and achieve maintenance cost Low cost, small investment and simple system
Pending Publication Date: 2020-10-02
HUANENG POWER INT INC +1
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[0004] The purpose of the present invention is to provide a simple device and method for rapid entrained air bed sludge drying and incineration, which solves the problems of complex system, large floor area, large investment, high power consumption, and problems in existing sludge drying systems. The problem of high maintenance costs
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[0022] The present invention will be described in further detail below with reference to the accompanying drawings.
[0023] like figure 1 , figure 2 As shown, a simple device for rapid entrained air bed sludge drying and incineration provided by the present invention includes a wet sludge bin 1, a screw conveyor 2, a rapid entrained air bed sludge drier 3, a sludge feed port 4, a primary blower Dispersing breaker 5, anti-blocking grille 6, air distribution plate 7, wind cap 8, sludge breaker 9, air chamber 10, induced draft fan 11, air preheater 12 and pulverized coal boiler 13, wherein, the wet sludge The outlet of the bin 1 is connected to the sludge inlet on the rapid air-flow bed sludge dryer 3 through the screw conveyor 2.
[0024] There are multiple sludge feed ports 4; the multiple sludge feed ports are evenly distributed along the circumferential direction of the cylinder body of the rapid entrained air bed sludge dryer 3.
[0025] The entrance of each sludge feed...
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The invention provides a simple device and method for rapid entrained-flow bed sludge drying incineration. The device comprises a wet sludge bin, a rapid entrained-flow bed sludge drying machine, a primary scattering and crushing device, a sludge crushing device, an air chamber and a pulverized coal boiler. A discharging opening of the wet sludge bin is connected with a sludge feeding opening on the rapid entrained-flow bed sludge drying machine. A discharging opening of the rapid entrained-flow bed sludge drying machine is connected with a feeding opening of the pulverized coal boiler. The primary scattering and crushing device is arranged at the sludge feeding opening. The air chamber is arranged at the bottom of the rapid entrained-flow bed sludge drying machine, and an air inlet on theair chamber is connected with a high-temperature flue gas outlet on a flue of the pulverized coal boiler. The sludge crushing device is arranged at the bottom of the air chamber. According to the simple device and method, a whole set of system is quite simple, the multiple advantages of being small in occupied land, low in maintenance cost, low in running power consumption, small in investment, rapid in recovery and the like are achieved, and the potential impact generated by the situation that dry sludge is independently treated after being separated from exhaust gas to running of a drying machine and a coal-fired unit is avoided; the whole set of system is simpler, and reliability is higher; and compared with other sludge drying incineration technologies at this stage, the advantages are remarkable, and competitive power is quite prominent.
Description
technical field [0001] The invention relates to the technical field of coal-fired boiler coupled biomass utilization and environmental protection, in particular to a simple device and method for rapidly entrained air bed sludge drying and incineration. Background technique [0002] With the development of society and the improvement of people's living standards, the amount of urban sewage treatment is increasing day by day. Correspondingly, the generation of urban sludge, a derivative of sewage treatment, is increasing day by day. In 2015, the annual output of municipal sludge in the country reached 50 million tons. If industrial sludge is included, the total amount reaches the level of municipal solid waste. The demand for reasonable and environmentally friendly treatment of a large amount of municipal sludge is increasing. Combined with China's national conditions, sludge treatment based on coal-fired unit incineration is the most environmentally friendly and effective di...
Claims
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IPC IPC(8): F23G5/033F23G5/04F23G5/30F23G5/46F23G7/00F23L15/00C02F11/13
CPCF23G5/033F23G5/04F23G5/30F23G5/46F23G7/001F23L15/00C02F11/13F23G2209/12Y02E20/34
Inventor 林伟荣王绍民王海涛时正海高洪培
Owner HUANENG POWER INT INC