A kind of external heating type light sludge ceramsite firing method based on biomass micron fuel
A technology for lightweight sludge and sludge ceramsite, which is applied in the production of ceramic products, clay products, and ceramic materials, etc. Advanced problems, to avoid material sintering problems, save drying time, and ensure the effect of uniform heating
Active Publication Date: 2021-11-23
HUAZHONG UNIV OF SCI & TECH +1
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Problems solved by technology
Using dry method to prepare ceramsite, the pretreatment time is long, the energy consumption is large, the ratio of input to output is too high, and the economic benefit of energy utilization cannot be realized.
[0005] Second, the energy consumption of ceramsite firing is high
[0010] At present, sludge is used as the main raw material to prepare ceramsite technology equipment in practical applications. The sludge in sewage plant has high moisture content, the cost of dry addition method is high, and the energy consumption of ceramsite firing is high.
Method used
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[0073] Such as figure 2 As shown, the present invention provides an external heating type light sludge ceramsite firing unit based on biomass micron fuel, the external heating type light sludge ceramsite firing unit at least includes a fuel delivery unit, and the ceramsite firing unit Control unit, hot air diversion utilization unit, sludge ceramsite drying system and automatic control unit.
[0074] The fuel delivery unit includes a biomass micron fuel hopper, a discharge screw, a discharge pipe and a feed fan.
[0075] Preferably, the biomass micron fuel hopper includes a hopper, stirring blades and a geared motor. The hopper is preferably a sealed hopper. The blade stirring device inside the hopper is provided with a geared motor outside. Driven by the geared motor, the internal blades are driven by the geared motor. Driven by the low-speed rotation, the biomass micron fuel in the hopper is driven to turn over and stir, and the material is evenly discharged.
[0076] Pre...
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The invention belongs to the technical field of environmental protection and building materials, and discloses an external heating type light sludge ceramsite firing method based on biomass micron fuel, which at least includes a fuel delivery unit, a ceramsite firing unit, a hot air diversion utilization unit, Sludge ceramsite calcining system and automatic control unit. Through the invention, the sewage sludge can be produced in a form of low-cost and low-energy-consuming ceramsite, and the harmless, reduced and resource-based treatment of solid waste is realized. The present invention saves the drying time of sludge from sewage plants in the early stage and reduces energy consumption; the present invention uses biomass micron fuel as a high-temperature heat source to completely replace fossil energy such as coal and natural gas, and solves the problem of ceramsite firing on the basis of cleanliness, environmental protection and sustainability. The problem of high energy consumption.
Description
technical field [0001] The invention belongs to the technical field of environmental protection and building materials, and in particular relates to an external heating type light sludge ceramsite firing method based on biomass micron fuel. Background technique [0002] At present, ceramsite, as a kind of lightweight aggregate, is widely used in environmental protection and construction fields due to its light weight, porous, acid and alkali resistance and thermal insulation properties. At present, the ceramsite in our country is mostly clay ceramsite, and the clay mainly comes from rural farmland. If things go on like this, it does not conform to the sustainable development strategy. With the increase of urban population and the development of industry, the amount of urban sludge is increasing day by day. According to statistics, the annual sludge discharge of urban sewage plants is about 800 million tons, and it is on the rise. At present, the mainstream sludge disposal ...
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IPC IPC(8): C04B38/06C04B33/132C04B33/13C04B33/32
CPCC04B33/13C04B33/1321C04B33/32C04B38/0645C04B2235/656C04B2235/6567C04B2235/77C04B2235/96Y02P40/60
Inventor 贾永胜胡送兵唐维刘淞华龚超董盼陶步黎刘诗豪肖波刘石明
Owner HUAZHONG UNIV OF SCI & TECH