Waste melting and solidification treatment system and method

Abstract

The invention discloses a waste fusing and curing treatment system and method. When the waste fusing and curing treatment system and method are used for treating rubbish, the rubbish conveying capacity is higher, the rubbish treating capacity is larger, the thermal loss can be reduced, the heat exchanging efficiency can be improved, the recovery efficiency of heat is relatively high, and the emission load of pollutants can be effectively reduced. The waste fusing and curing treatment system comprises a fusion hearth, a laminar flow channel, a water-cooling breaking system and a water seal deslagging system all of which are sequentially arranged in the feeding direction. A high-temperature burner and a gasifying agent inlet are formed in the side wall of the fusion furnace. The water-cooling breaking system comprises a water-cooling system, a water-cooling cavity and a glass body pulverizer. The method comprises the first step of furnace starting and drying; the second step of enabling residues into the fusion hearth to be fused; the third step of fusing inorganic waste in the laminar flow channel; the fourth step of carrying out water cooling on fusion slag and curing the fusion slag into glass body dregs, and breaking and discharging the dregs; and the fifth step of turning off the waste fusing and curing treatment system after the waste fusion dregs are discharged completely.

Description

technical field [0001] The invention belongs to the technical field of waste treatment, and in particular relates to a waste melting and solidification treatment system and method. Background technique [0002] Existing waste treatment technologies mainly include incineration, sanitary landfill, composting, and waste recycling. Among the conventional waste treatment technologies, incineration treatment has the advantages of obvious reduction effect, complete harmlessness, small land occupation, utilization of waste heat energy, and less secondary pollution, which meets the strategic requirements of my country's sustainable development. However, with the continuous improvement of environmental protection requirements at home and abroad, how to strengthen the control of secondary pollution is particularly important. Therefore, waste pyrolysis gasification incineration technology is gradually pushed to the road of industrial application, especially for various domestic wastes,...

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Problems solved by technology

[0007] 2. With the increasing amount of waste generated and piled up like mountains, the processing capacity must be effectively increased in order to meet market demand

[0010] Existing incinerators such as the following two invention patents: multi-column segmented drive compound domestic waste incinerator (ZL200710092508.9) and two-stage waste incinerator (ZL201010268376.2) Unsolved problems: waste heat treatment mode Relatively backward, it is only the process of drying-combustion-burning, solid combustion to release heat; the thermochemical reaction in the furnace is dominated by oxidation reaction, supplemented by reduction reaction, which is easy to produce secondary pollutants; when waste is burned in the furnace, the peroxygen coefficient Large, large amount of primary air and secondary air supply, high dust content in flue gas, great impact on heat energy recovery system and flue gas treatment system, easy to accumulate dust, large amount of flue gas, reducing heat conversion efficiency; There is no separate gasification furnace and ember furnace, so garbage can only be treated in batches, and large-scale continuous gasification and incineration of waste cannot be realized, and the amount of garbage treated is small

Such as a plasma-assisted heating melting gasification reactor (CN201410744643.7), waste melting and solidification treatment system (CN201280068994.X), municipal solid waste oxygen top blowing direct melting gasification combustion and its power generation technology (CN01107088.9) and others The tank-type gasification-melting centralized treatment technology has unresolved problems: the heat treatment mode of waste is relatively advanced, but it mainly continues the idea of ​​fixed bed or fluidized bed to carry out drying-pyrolysis-gasification-combustion (also without combustion) )-melting, the continuity of the heat treatment process is not good, it is difficult to match the treatment rhythm of each stage, and the heat recovery and utilization link is not considered enough, the economy is poor, and it is impossible to realize large-scale continuous gasification and melting treatment of waste, and the treatment capacity is small. And the processing of molten slag is not perfect

Such as a rotary kiln gasification, plasma melting domestic waste graded gasification system (CN201520578876.4), a method for producing combustible gas by melting and gasifying domestic waste in a rotary kiln (CN200910218227.2), waste gasification and fly ash high temperature Melting treatment device and method (CN200710144924.9) and other tank-type separation treatment technologies, the unresolved problem: the waste heat treatment mode is relatively advanced, but it mainly continues the idea of ​​fixed bed or fluidized bed to carry out drying-pyrolysis- Gasification-combustion (also without combustion)-melting, the main gasification and melting stages are separated into different equipment, the heat treatment process is more continuous, but the rhythm between the separation stages is still difficult to match, and the recovery of heat Insufficient consideration of the utilization link, poor economic efficiency, large-scale continuous gasification and melting of waste cannot be realized, the processing volume is small, and the treatment of molten slag is not perfect

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