Odor gas treatment system and method suitable for cement kiln synergistically treating rubbish

Abstract

The invention discloses an odor gas treatment system and method suitable for a cement kiln synergistically treating rubbish. A rubbish warehouse of the system is connected with an incineration furnaceand three air exhaust branch loops, a first air exhaust branch loop comprises a preheater and a first air fan, an air inlet of the preheater is connected with the rubbish warehouse, an air outlet ofthe preheater is connected with an air exhaust mouth of the first air fan, and the air outlet of the first air fan is connected with the incineration furnace; a second air exhaust branch loop comprises a second air fan, the air exhaust mouth of the second air fan is connected with the rubbish warehouse, and the air outlet of the second air fan is connected with a grate cooler; a third air exhaustbranch loop comprises an odor removing device and a third air fan, the air inlet of the odor removing device is connected with the rubbish warehouse, and the air outlet of the odor removing device isconnected with the air exhaust mouth of the third air fan. According to the odor gas treatment system and method suitable for the cement kiln synergistically treating the rubbish, the above-mentionedthree air exhaust branch loops work in different states, the whole system operates under negative pressure, the problems of the odor gas diffusion and explosion hazard in synergistically treating therubbish of the cement kiln are effectively solved, and the exhausted odor gas is sent into the incineration furnace and the grate cooler to be subjected to high temperature decomposition or is discharged after being treated by the odor removing device to reach the standard.

Description

technical field [0001] The invention provides an odor treatment system and method suitable for co-processing garbage in cement kilns, belonging to the field of urban domestic garbage treatment. Background technique [0002] The stockpile of urban domestic waste in my country has reached 6 billion tons, occupying 500 million square meters of arable land, and the disposal of urban domestic waste has become the focus of attention of the whole people. The development of traditional landfill, composting, incineration and other technologies is limited due to their inherent shortcomings. At present, although domestic waste incineration power plants opened in many cities have achieved certain results in waste reduction and energy utilization, the problem of dioxin pollution caused by incineration has aroused controversy over the way of waste incineration. The cement kiln system has the characteristics of large capacity, high working temperature, etc., and has a good ability to acco...

AI Technical Summary

Problems solved by technology

[0003] In the cement kiln co-processing garbage system, the factory area needs to store a certain amount of garbage. The organic matter in the garbage will be fermented and rotted in the garbage warehouse to produce stench, which will cause secondary pollution to the factory area and the surrounding environment; in addition, the garbage will be accumulated in the garbage warehouse for a long time A certain amount of flammable gas such as CH will be produced 4 etc., may cause combustion or even explosion

In order to prevent the potential explosion after the odor diffuses and accumulates, the malodorous gas in the garbage warehouse needs to be treated in time. Usually, the deodorizing device (scrubbing tower + activated carbon adsorption) is used to treat it and discharge it to the outside after reaching the standard. However, this method has high operation and maintenance costs; some The technical solution uses the high temperature environment of the cement kiln grate cooler to decompose the odor. On the one hand, due to the long cement production line, all the odor is sent to the grate cooler, and the fan operation consumes a lot of energy; on the other hand, in order to ensure that the garbage Negative pressure in the warehouse, the exhaust air volume must meet the demand, only the grate cooler has a small output to deal with the odor, and it is difficult to guarantee the negative pressure stability of the whole system

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