A solid waste drying method and silo
A silo and drying technology, which is applied in the combustion method, incinerator, combustion type, etc., can solve the problem of not finding dry garbage, etc., and achieves the advantages of mechanical sorting, reduction of dioxin pollution, and incineration. Effect
Active Publication Date: 2020-12-01
庄维健
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Problems solved by technology
Perhaps today’s solid waste experts are not ignorant of this truth. The crux of the problem is that due to the huge daily output of domestic waste, there is still no way to obtain dry waste on a large scale and at low cost.
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[0021] The following is an example of the operation process of a waste drying plant to describe the specific implementation method. The basic information is as follows:
[0022] Daily capacity: During normal operation, 1,000 tons of wet waste is fed in and 1,000 tons of dry waste is discharged per day. Note: According to the theory, after the wet garbage is decomposed and stabilized and dried, the volume and weight will definitely decrease, but for the convenience of calculation and description, it is assumed that the weight and volume of 1 ton of wet garbage will remain unchanged after drying, and the bulk density will be 1 (tons / cubic meter).
[0023] Design elements of a single silo: The silo has a diameter of 40 meters, a height of 20 meters, a volume of about 25,000 cubic meters, and a daily feed of 1,000 tons. It takes 25 days to fill a silo.
[0024] A total of 17 silos have been built in the waste drying field. A single silo covers an area of 1.88 mu, and the 17 sil...
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The invention discloses a solid waste drying method and a silo for pretreatment of solid wastes before incineration, and belongs to the field of environmental engineering. The life common senses tellincompatibility between water and fire. But wet garbage with higher water content is incinerated in a traditional garbage incineration furnace, the scientific common senses are obviously violated. Thesolid waste drying method is a new technology capable of obtaining dried garbage with low cost on a large scale. The garbage drying operation cost is mainly from feeding and discharging, and composting and drying of the garbage are finished by the nature, so that the drying cost of each ton of garbage is only 15 Yuan, and the wet garbage with about 60% of water content is dried to reach the watercontent of lower than 20%. Compared with the traditional sludge drying cost, the drying cost of each ton is 300-500 Yuan. The garbage is incinerated after drying, so that the efficiency is improved by 5-10 times compared with traditional incineration of the wet garbage, and the heat energy can be greatly improved. In addition, the garbage drying combustion is more sufficient; and high furnace temperature can be kept, so that the dioxin pollution caused by the smoke emission can be greatly reduced.
Description
technical field [0001] A solid waste drying method of the present invention is for pretreatment of solid waste before incineration, and belongs to the field of environmental engineering. Background technique [0002] The solid waste in the present invention includes domestic garbage and domestic sludge. Take domestic waste as an example: the existing waste incinerators are all burning wet waste with high water content. The common sense of life tells us that fire and water are incompatible. All organic substances that can be incinerated (such as kitchen waste in garbage) must be dried before they can be incinerated. Only in this way can the incineration efficiency be greatly improved, and the maximum heat energy can be obtained. In addition, the pollution of the flue gas emission to the environment is also minimal. For example, Tibetan herdsmen must dry cow dung as fuel, and never burn fresh wet cow dung. Therefore, it is obviously against scientific principles to incinerat...
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IPC IPC(8): F23G5/04F23G5/44
CPCF23G5/04F23G5/444F23G2201/10F23G2205/14
Inventor 庄维健
Owner 庄维健