CN113213727A - Environment-friendly waste removing system and process - Google Patents
Environment-friendly waste removing system and process Download PDFInfo
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- CN113213727A CN113213727A CN202110481200.3A CN202110481200A CN113213727A CN 113213727 A CN113213727 A CN 113213727A CN 202110481200 A CN202110481200 A CN 202110481200A CN 113213727 A CN113213727 A CN 113213727A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/027—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using cyclone separators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses an environment-friendly waste removing system which comprises a feeding system, a sludge multi-stage furnace pyrolysis system and a tail gas treatment system, wherein the feeding system consists of a sludge feeding groove and a scraper conveyor which are connected with each other, the sludge multi-stage furnace pyrolysis system comprises a multi-stage furnace, the bottom end of the multi-stage furnace is connected with an axial air cooler and a combustion fan, the tail gas treatment system comprises a multi-pipe cyclone dust collector, a precooler, a washing tower, an RTO heat accumulation type combustion furnace, an active carbon feeder, a cloth dust collector and a smoke exhaust chimney which are sequentially connected, the scraper conveyor is communicated with a feeding port of the multi-stage furnace, an exhaust port is arranged at the top end of the multi-stage furnace, and the exhaust port is communicated with the multi-pipe cyclone dust collector. This environmental protection removes useless system and technology, process flow is simple, and tail gas treatment efficiency is higher, through scrubbing tower, RTO regenerative combustion furnace and the sack cleaner among the tail gas treatment system, has realized getting rid of acid gas and smoke and dust in the tail gas fast, and then is convenient for realize that the emission of tail gas is administered up to standard.
Description
Technical Field
The invention relates to the technical field of environmental protection waste removal, in particular to an environmental protection waste removal system and process.
Background
Industrial solid waste, which is a short term for industrial solid waste, refers to solid waste generated in industrial production activities, such as tailings generated by mine enterprises, and includes general industrial solid waste and hazardous waste. The hazardous waste refers to solid waste with hazardous characteristics listed in national hazardous waste lists or identified according to the national hazardous waste identification standards and methods.
Currently, the production of industrial solid waste generally continues to increase with increasing economics. If a large amount of industrial solid wastes cannot be properly treated, not only can huge economic loss and energy resource waste be caused, but also the environment and human health are inevitably influenced profoundly. In the prior art, when industrial solid waste is treated, foul waste gas and tail gas are often generated, however, most of the existing industrial solid waste treatment systems often ignore the influence of the foul waste gas and the tail gas on the environment, directly discharge the foul waste gas and the tail gas and cause certain air pollution, so that the improvement is made, and the environment-friendly waste removal system and the process are provided.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention discloses an environment-friendly waste removing system which comprises a feeding system, a sludge multi-stage furnace pyrolysis system and a tail gas treatment system, wherein the feeding system is composed of a sludge feeding groove and a scraper conveyor which are connected with each other, the sludge multi-stage furnace pyrolysis system comprises a multi-stage furnace, the bottom end of the multi-stage furnace is connected with an axial air cooler and a combustion fan, the tail gas treatment system comprises a multi-pipe cyclone dust collector, a precooler, a washing tower, an RTO heat accumulating type combustion furnace, an active carbon feeder, a cloth dust collector and a smoke exhaust chimney which are sequentially connected, the scraper conveyor is communicated with a feeding port of the multi-stage furnace, an exhaust port is arranged at the top end of the multi-stage furnace, and the exhaust port is communicated with the multi-pipe cyclone.
As a preferable technical solution of the present invention, the scraper conveyor is a closed scraper conveyor.
As a preferred technical scheme of the invention, the vertical multi-section harrow type furnace of the multi-section furnace is internally provided with a distributor, and the tail end of the multi-section furnace is connected with a sludge discharge chute.
As a preferred embodiment of the present invention, the blower wind pressure Pf of the shaft air cooler is 400mmAq, and the combustion blower wind pressure Pf is 500 mmAq.
As a preferable technical scheme of the invention, the scrubber is a wet scrubber, and the inlet flue gas volume of the wet scrubber is 5656Nm3The amount of washing water was 43246 kg/h.
An environment-friendly waste removing process is characterized by comprising the following steps:
s1, conveying the sludge in the sludge feeding groove to a multi-stage furnace in a pyrolysis system of a sludge multi-stage furnace through a scraper conveyor in the feeding system;
s2, uniformly distributing the sludge through a distributor in the multi-stage furnace;
s3, preheating the sludge at the preheating temperature of 150 ℃, and drying the sludge at a constant speed after preheating at the drying temperature of 150-;
s4, heating the sludge to 200-325 ℃, and then performing pyrolysis, wherein the pyrolysis temperature is 300-325 ℃;
s5, carrying out three times of pyrolysis carbonization treatment on the sludge after pyrolysis, wherein the temperature of the three times of pyrolysis carbonization treatment is 325-450 ℃, 325-500 ℃ and 325-450 ℃ respectively;
and S6, discharging the sludge subjected to pyrolysis carbonization into a sludge discharge chute, cooling and discharging.
As a preferable technical scheme of the present invention, before the sludge is conveyed by the scraper conveyor in S1, the sludge is subjected to pressure filtration, the water content of the pressure-filtered sludge is 60%, and then the pressure-filtered sludge is conveyed to a multi-stage furnace, and during the pressure filtration, the malodorous waste gas generated by the pressure filtration is sent to an RTO regenerative thermal oxidizer in a tail gas treatment system by an exhaust fan for combustion and decomposition.
As a preferred technical scheme of the invention, the tail gas generated in the multi-stage furnace in S2, S3, S4 and S4 is sent to a multi-pipe cyclone dust collector in a tail gas treatment system through a draught fan, the tail gas is cooled through a precooler and then sent to a washing tower after being cooled, the tail gas is washed by alkali liquor, the tail gas enters an RTO regenerative thermal combustion furnace after being washed, is combusted and decomposed, is sent to a bag-type dust collector after being decomposed, is dedusted, and is discharged through a smoke exhaust chimney after being dedusted.
The invention has the beneficial effects that:
1. according to the environment-friendly waste removing system and the process, the sludge is dried, decomposed and carbonized through the multi-stage furnace, the pollution of the sludge to the environment is minimized, the treatment effect and the treatment efficiency are high, meanwhile, the combustion and decomposition of the malodorous waste gas and the tail gas generated in the treatment process are realized through the RTO heat accumulating type combustion furnace in the tail gas treatment system, the harmful gas in the malodorous waste gas and the tail gas is effectively eliminated, and the pollution to the air is avoided;
2. this environmental protection removes useless system and technology, process flow is simple, and tail gas treatment efficiency is higher, through scrubbing tower, RTO regenerative combustion furnace and the sack cleaner among the tail gas treatment system, has realized getting rid of acid gas and smoke and dust in the tail gas fast, and then is convenient for realize that the emission of tail gas is administered up to standard.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a system schematic of an environmentally friendly abatement system of the present invention;
FIG. 2 is a process flow diagram of an environmentally friendly abatement process of the present invention.
In the figure: 1. a sludge feed tank; 2. a scraper conveyor; 3. a multi-stage furnace; 4. a multi-cyclone dust collector; 5. a precooler; 6. a washing tower; 7. RTO regenerative furnace; 8. an activated carbon feeder; 9. a cloth dust remover; 10. a chimney is discharged.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in figure 1, the environment-friendly waste removing system comprises a feeding system, a sludge multi-stage furnace pyrolysis system and a tail gas treatment system, wherein the feeding system is composed of a sludge feeding groove 1 and a scraper conveyor 2 which are connected with each other, the sludge multi-stage furnace pyrolysis system comprises a multi-stage furnace 3, the bottom end of the multi-stage furnace 3 is connected with an axial air cooler and a combustion fan, the tail gas treatment system comprises a multi-pipe cyclone dust collector 4, a precooler 5, a washing tower 6, an RTO heat accumulating type combustion furnace 7, an active carbon feeder 8, a material distribution dust collector 9 and a smoke exhaust chimney 10 which are sequentially connected, the scraper conveyor 2 is communicated with a feeding port of the multi-stage furnace 3, an exhaust port is arranged at the top end of the multi-stage furnace 3, and the exhaust port is communicated with the multi-pipe cyclone dust collector 4.
Wherein the scraper conveyor 2 is a closed scraper conveyor.
Wherein, 3 vertical type multistage harrow formula stoves of multistage stove, just the internally mounted of multistage stove 3 has the distributing device, the end-to-end connection of multistage stove 3 has the mud blown down tank.
The air pressure Pf of the air blower of the shaft air cooler is 400mmAq, and the air pressure Pf of the combustion air blower is 500 mmAq.
Wherein the scrubber tower 6 is a wet scrubber tower, and the inlet flue gas amount of the wet scrubber tower is 5656Nm3The amount of washing water was 43246 kg/h.
As shown in FIG. 2, the environment-friendly waste removing process is characterized by comprising the following steps:
s1, conveying the sludge in the sludge feeding groove to a multi-stage furnace in a pyrolysis system of a sludge multi-stage furnace through a scraper conveyor in the feeding system;
s2, uniformly distributing the sludge through a distributor in the multi-stage furnace;
s3, preheating the sludge at the preheating temperature of 150 ℃, and drying the sludge at a constant speed after preheating at the drying temperature of 150-;
s4, heating the sludge to 200-325 ℃, and then performing pyrolysis, wherein the pyrolysis temperature is 300-325 ℃;
s5, carrying out three times of pyrolysis carbonization treatment on the sludge after pyrolysis, wherein the temperature of the three times of pyrolysis carbonization treatment is 325-450 ℃, 325-500 ℃ and 325-450 ℃ respectively;
and S6, discharging the sludge subjected to pyrolysis carbonization into a sludge discharge chute, cooling and discharging.
Wherein, before the scraper conveyor carries sludge in S1, carry out the filter-pressing to sludge, after the filter-pressing sludge moisture content reaches 60%, carry to the multistage stove again, during the filter-pressing, send the foul smell waste gas that the filter-pressing produced into the RTO heat accumulation formula combustion furnace in the tail gas processing system through the air exhauster, carry out the combustion decomposition.
The tail gas generated in the S2, S3, S4 and S4 in the multi-stage furnace is sent to a multi-pipe cyclone dust collector in a tail gas treatment system through a draught fan, the tail gas is cooled through a precooler and then sent to a washing tower to be washed by alkali liquor, the tail gas after washing enters an RTO regenerative thermal oxidizer to be burnt and decomposed, and then sent to a bag dust collector to be dedusted, and the dedusted tail gas is discharged through a chimney after dedusting.
The environment-friendly waste removing system and the process have the advantages that the process flow is simple, the tail gas treatment efficiency is high, and the washing tower, the RTO heat accumulating type combustion furnace and the bag-type dust collector in the tail gas treatment system are used for quickly removing acid gas and smoke dust in the tail gas, so that the emission of the tail gas can be controlled to reach the standard; carry out drying, decomposition and carbonization treatment to mud through the multistage stove, will minimum with the pollution of mud to the environment, have higher treatment effect and treatment effeciency, simultaneously through the RTO heat accumulation formula combustion furnace among the tail gas processing system, realized the burning decomposition to the foul smell waste gas that the processing procedure produced and tail gas, effectively eliminated the harmful gas in foul smell waste gas and the tail gas, avoided the pollution to the air.
Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An environment-friendly waste removing system is characterized by comprising a feeding system, a sludge multi-stage furnace pyrolysis system and a tail gas treatment system, the feeding system consists of a sludge feeding groove (1) and a scraper conveyor (2) which are connected with each other, the sludge multi-section furnace pyrolysis system comprises a multi-section furnace (3), the bottom end of the multi-section furnace (3) is connected with an axial cooling fan and a combustion fan, the tail gas treatment system comprises a multi-pipe cyclone dust collector (4), a precooler (5), a washing tower (6), an RTO regenerative thermal oxidizer (7), an active carbon feeder (8), a cloth dust collector (9) and a chimney (10) which are connected in sequence, the scraper conveyor (2) is communicated with a feeding port of the multi-section furnace (3), the top end of the multi-section furnace (3) is provided with an exhaust port, and the exhaust port is communicated with the multi-pipe cyclone dust collector (4).
2. An environmentally friendly waste removal system according to claim 1, wherein the scraper conveyor (2) is an enclosed scraper conveyor.
3. An environment-friendly waste removal system as claimed in claim 1, wherein the multi-stage furnace (3) is a vertical multi-stage rake furnace, a distributor is installed inside the multi-stage furnace (3), and a sludge discharge chute is connected to the end of the multi-stage furnace (3).
4. The environmental protection waste removing system according to claim 1, wherein the air pressure Pf of the axial cooling fan is 400mmAq, and the air pressure Pf of the combustion fan is 500 mmAq.
5. An environmentally friendly abatement system according to claim 1, wherein the scrubber tower (6) is a wet scrubber tower and the wet scrubber tower inlet flue gas volume is 5656Nm3The amount of washing water was 43246 kg/h.
6. An environment-friendly waste removing process is characterized by comprising the following steps:
s1, conveying the sludge in the sludge feeding groove to a multi-stage furnace in a pyrolysis system of a sludge multi-stage furnace through a scraper conveyor in the feeding system;
s2, uniformly distributing the sludge through a distributor in the multi-stage furnace;
s3, preheating the sludge at the preheating temperature of 150 ℃, and drying the sludge at a constant speed after preheating at the drying temperature of 150-;
s4, heating the sludge to 200-325 ℃, and then performing pyrolysis, wherein the pyrolysis temperature is 300-325 ℃;
s5, carrying out three times of pyrolysis carbonization treatment on the sludge after pyrolysis, wherein the temperature of the three times of pyrolysis carbonization treatment is 325-450 ℃, 325-500 ℃ and 325-450 ℃ respectively;
and S6, discharging the sludge subjected to pyrolysis carbonization into a sludge discharge chute, cooling and discharging.
7. The environment-friendly waste removal process of claim 6, wherein before the sludge is conveyed by the scraper conveyor in S1, the sludge is subjected to filter pressing, the filter-pressed sludge is conveyed to a multi-stage furnace after the water content of the filter-pressed sludge reaches 60%, and during filter pressing, malodorous waste gas generated by filter pressing is sent to an RTO regenerative thermal oxidizer in a tail gas treatment system through an exhaust fan for combustion and decomposition.
8. The environment-friendly waste removal process as claimed in claim 6, wherein the tail gas generated in the multistage furnace in S2, S3, S4 and S4 is sent to a multi-pipe cyclone dust collector in a tail gas treatment system through a draught fan, the tail gas is cooled through a precooler and then sent to a washing tower after being cooled, the tail gas is washed by alkali liquor, the tail gas enters an RTO regenerative thermal combustion furnace after being washed, is combusted and decomposed, is sent to a bag-type dust collector after being decomposed, is dedusted, and is discharged through a smoke exhaust chimney after being dedusted.
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| CN202110481200.3A CN113213727A (en) | 2021-04-30 | 2021-04-30 | Environment-friendly waste removing system and process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110481200.3A CN113213727A (en) | 2021-04-30 | 2021-04-30 | Environment-friendly waste removing system and process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113998866A (en) * | 2021-10-29 | 2022-02-01 | 广东尚鼎环境科技有限公司 | Organic solid waste treatment system and treatment process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113998866A (en) * | 2021-10-29 | 2022-02-01 | 广东尚鼎环境科技有限公司 | Organic solid waste treatment system and treatment process thereof |
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