CN215232791U - Hazardous waste burns flue gas treatment process systems - Google Patents
Hazardous waste burns flue gas treatment process systems Download PDFInfo
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- CN215232791U CN215232791U CN202023344365.6U CN202023344365U CN215232791U CN 215232791 U CN215232791 U CN 215232791U CN 202023344365 U CN202023344365 U CN 202023344365U CN 215232791 U CN215232791 U CN 215232791U
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Abstract
The utility model discloses a hazardous waste incineration flue gas treatment process system, which comprises a waste heat boiler, a high-temperature bag type dust collector, an economizer, a dry deacidification tower, a catalytic bag type dust collector, an induced draft fan and a chimney, wherein the incinerated flue gas flows through the waste heat boiler, the high-temperature bag type dust collector, the economizer, the dry deacidification tower, the catalytic bag type dust collector and the induced draft fan in sequence; it has the following advantages: environmental protection and energy saving.
Description
Technical Field
The utility model relates to a flue gas treatment field especially relates to a hazardous waste burns flue gas treatment process systems.
Background
The smoke components generated in the incineration disposal of the hazardous wastes are complex, and the dust contains heavy metals, the smoke contains strong acid gases such as sulfur dioxide, hydrogen chloride, hydrogen fluoride and the like, and contains highly toxic substances such as dioxin and the like. Fig. 1 shows a flow chart of the existing hazardous waste incineration flue gas treatment process. In order to effectively treat hazardous waste flue gas, the conventional flue gas treatment process mainly comprises the steps of treating the flue gas at 500-650 ℃ after passing through an exhaust-heat boiler by a quench tower to reduce the temperature to below 250 ℃, so as to avoid the regeneration of dioxin; and the quenched flue gas is subjected to processes of desulfurization, dioxin removal, dust removal, multistage deacidification, flue gas heating, denitration and the like, and then is discharged through a chimney. The flue gas treatment process flow is complex, the flue gas system resistance is large, the energy consumption is high, if the nitrogen oxide treatment process measures are added, the energy consumption is obviously increased, and the treatment cost of hazardous waste is greatly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hazardous waste burns flue gas treatment process systems, it has overcome in the background art the not enough of prior art.
The utility model provides a technical scheme that its technical problem adopted is:
a hazardous waste incineration flue gas treatment process system comprises a waste heat boiler, a high-temperature bag type dust collector, an economizer, a dry deacidification tower, a catalytic bag type dust collector, an induced draft fan and a chimney, wherein the incinerated flue gas flows through the waste heat boiler, the high-temperature bag type dust collector, the economizer, the dry deacidification tower, the catalytic bag type dust collector, the induced draft fan and the chimney in sequence; the inlet of the high-temperature bag type dust collector is connected with the outlet of the waste heat boiler through a flue, and the outlet of the high-temperature bag type dust collector is connected with the inlet of the economizer through a flue; the outlet of the coal economizer is connected with the inlet of the dry-method deacidification tower through a flue; the inlet of the catalytic bag type dust collector is connected with the outlet of the dry deacidification tower through a flue, and the outlet of the catalytic bag type dust collector is connected with the inlet of the induced draft fan through a flue; and the outlet of the induced draft fan is connected with the chimney through a flue.
In one embodiment: and the inlet of the waste heat boiler is connected with the outlet of the incinerator through a flue.
In one embodiment: the high-temperature bag type dust collector is provided with a filter material, and the filter material is metal fiber or metal powder or ceramic fiber.
In one embodiment: the high-temperature bag type dust collector can resist 500 ℃ and above 500 ℃.
In one embodiment: the catalytic bag type dust collector is provided with a filtering material which has the function of cooperatively removing nitrogen oxides and dioxin.
Compared with the background technology, the technical scheme has the following advantages:
1. the process flow of the system is greatly simplified, the running resistance of the system is greatly reduced, and the running power consumption of the fan is reduced.
2. High-temperature dust removal is carried out firstly by a high-temperature bag type dust collector, so that the factors for catalyzing and generating dioxin again in the range of 200 ℃ to 500 ℃ (such as heavy metals in dust, and the heavy metals have a catalyzing effect on the generation of dioxin) are eliminated; the economizer plays a good role in recovering the waste heat of the flue gas and saving energy, and simultaneously has no problem of waste water treatment.
3. The dry deacidification tower is adopted for deacidification, so that secondary pollution caused by discharge of waste water generated by wet deacidification and the problem of treatment of the waste water are avoided;
4. without the high energy consumption of low-temperature denitration steam reheating.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a conventional hazardous waste incineration flue gas treatment process system described in the background art.
Fig. 2 is a schematic structural diagram of the hazardous waste incineration flue gas treatment process system according to the embodiment.
Detailed Description
Referring to fig. 2, a hazardous waste incineration flue gas treatment process system comprises a waste heat boiler 1, a high-temperature bag type dust collector 2, an economizer 3, a dry deacidification tower 4, a catalytic bag type dust collector 5, an induced draft fan 6 and a chimney 7; the inlet of the high-temperature bag type dust collector 2 is connected with the outlet of the waste heat boiler 1 through a flue, and the outlet of the high-temperature bag type dust collector 2 is connected with the inlet of the economizer 3 through a flue; the outlet of the coal economizer 3 is connected with the inlet of the dry acid removal tower 4 through a flue; the inlet of the catalytic bag type dust collector 5 is connected with the outlet of the dry deacidification tower 4 through a flue, and the outlet of the catalytic bag type dust collector 5 is connected with the inlet of the induced draft fan 6 through a flue; and the outlet of the induced draft fan 6 is connected with the chimney 7 through a flue. The inlet of the waste heat boiler 1 is connected with the outlet of the incinerator 8 through a flue, and incineration flue gas incinerated by the incinerator 8 flows through the waste heat boiler 1, the high-temperature bag type dust collector 2, the economizer 3, the dry deacidification tower 4 and the catalytic bag type dust collector 5 in sequence to be treated, is extracted by the induced draft fan 6 and is discharged through the chimney 7.
The filtering material in the high-temperature bag type dust collector 2 is metal fiber or metal powder or ceramic fiber. The high-temperature bag type dust collector 2 is a bag type dust collector capable of resisting 500 ℃ and above 500 ℃, and the smoke temperature at the inlet of the high-temperature bag type dust collector 2 reaches 500 ℃ and above 500 ℃ in the smoke treatment process.
The catalytic bag type dust collector 5 is provided with a filtering material which can remove nitrogen oxides and dioxin in a synergic manner. In the flue gas treatment process, the temperature of the flue gas at the outlet of the economizer 3 is 200-250 ℃.
In order to optimize the flue gas treatment process of the hazardous waste disposal environment-friendly industry, promote the technological innovation development of the industrial environment-friendly treatment process and reduce the hazardous waste disposal cost, the scheme combines high-temperature dust removal and the catalytic filter bag to realize the organic unification of environmental protection and energy conservation of the hazardous waste incineration flue gas treatment process.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.
Claims (5)
1. The utility model provides a hazardous waste burns flue gas treatment process systems which characterized in that: the system comprises a waste heat boiler, a high-temperature bag type dust collector, an economizer, a dry method deacidification tower, a catalytic bag type dust collector, an induced draft fan and a chimney, wherein the burned flue gas sequentially flows through the waste heat boiler, the high-temperature bag type dust collector, the economizer, the dry method deacidification tower, the catalytic bag type dust collector, the induced draft fan and the chimney; the inlet of the high-temperature bag type dust collector is connected with the outlet of the waste heat boiler through a flue, and the outlet of the high-temperature bag type dust collector is connected with the inlet of the economizer through a flue; the outlet of the coal economizer is connected with the inlet of the dry-method deacidification tower through a flue; the inlet of the catalytic bag type dust collector is connected with the outlet of the dry deacidification tower through a flue, and the outlet of the catalytic bag type dust collector is connected with the inlet of the induced draft fan through a flue; and the outlet of the induced draft fan is connected with the chimney through a flue.
2. The hazardous waste incineration flue gas treatment process system according to claim 1, wherein: and the inlet of the waste heat boiler is connected with the outlet of the incinerator through a flue.
3. The hazardous waste incineration flue gas treatment process system according to claim 1, wherein: the high-temperature bag type dust collector is provided with a filter material, and the filter material is metal fiber or metal powder or ceramic fiber.
4. The hazardous waste incineration flue gas treatment process system according to claim 1, wherein: the high-temperature bag type dust collector can resist 500 ℃ and above 500 ℃.
5. The hazardous waste incineration flue gas treatment process system according to claim 1, wherein: the catalytic bag type dust collector is provided with a filtering material which has the function of cooperatively removing nitrogen oxides and dioxin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023344365.6U CN215232791U (en) | 2020-12-31 | 2020-12-31 | Hazardous waste burns flue gas treatment process systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023344365.6U CN215232791U (en) | 2020-12-31 | 2020-12-31 | Hazardous waste burns flue gas treatment process systems |
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| Publication Number | Publication Date |
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| CN215232791U true CN215232791U (en) | 2021-12-21 |
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| CN202023344365.6U Active CN215232791U (en) | 2020-12-31 | 2020-12-31 | Hazardous waste burns flue gas treatment process systems |
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