CN210951326U - Sludge and garbage drying carbonization pyrolysis combustion treatment system - Google Patents
Sludge and garbage drying carbonization pyrolysis combustion treatment system Download PDFInfo
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- CN210951326U CN210951326U CN201922179363.7U CN201922179363U CN210951326U CN 210951326 U CN210951326 U CN 210951326U CN 201922179363 U CN201922179363 U CN 201922179363U CN 210951326 U CN210951326 U CN 210951326U
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Abstract
The utility model discloses a sludge and garbage drying carbonization pyrolysis combustion treatment system, which comprises a dryer, a carbonization furnace, a pyrolysis furnace, a high-temperature fan and an air supplementing pipeline, wherein the air inlet end of the dryer is communicated with the exhaust end of the pyrolysis furnace and the exhaust end of the carbonization furnace through pipelines, the discharge port of the dryer is connected with the feed end of the carbonization furnace, the air outlet end of the dryer is connected with a flue gas purification system, the exhaust end of the carbonization furnace is also connected with the pyrolysis furnace, the air inlet end of the carbonization furnace is connected with the exhaust end of the pyrolysis furnace through an air duct, the air duct is provided with an air introducing port, the high-temperature fan is arranged on the air duct, the discharge port of the carbonization furnace is connected with the feed end of the pyrolysis furnace, and the air supplementing pipeline is connected with; compared with the prior art, the garbage incineration site environment can be greatly improved, garbage and sludge with high moisture content can directly enter a system, the garbage/sludge is dried, and a carbonized heat source is provided by tail gas of an incinerator or a boiler to form circulation.
Description
Technical Field
The utility model relates to an environmental protection technology field specifically relates to in industrial furnace combustion system technical field, in particular to mud, rubbish stoving carbonization pyrolysis combustion processing system.
Background
The current environmental pollution problem of China is serious, the accumulation of pollutants, particularly garbage and sludge, reaches very serious ground step, air, water and soil pollution for many years, the environmental ecology and the life safety are seriously threatened, and the continuous development of the country is seriously influenced.
At present, most of the sludge is buried or stacked in the open air except a small amount of garbage and the sludge is used as fertilizer. The industrial kiln combustion technology is adopted to treat a small amount of garbage and sludge, so that waste is changed into valuable, and the circular economy mode needs to be advocated and implemented vigorously.
The traditional treatment technology has the following defects: 1. the high heat value combustion furnace requires the heat value of the materials to be more than or equal to 1800 kcal/kg, the heat values of the sludge and the garbage are generally lower than 1500 kcal/kg, therefore, the sludge and the garbage are generally dried in a dryer to be within 10 percent and then are sent into the combustion furnace for combustion, and the comprehensive heat value of the materials is about 3000 kcal/kg because the heat value is not enough to add diesel oil, natural gas, electricity, biomass and the like, the treatment cost of the sludge and the garbage reaches about 200 yuan/T. And the investment is relatively large. Due to the unstable furnace temperature, harmful gases such as dioxin are not well controlled. 2. The high-temperature pyrolysis furnace can better solve the problem of dioxin emission, but has the defect of high investment, and the investment of disposal equipment for each ton of sludge and garbage reaches about 50 ten thousand yuan/T.
SUMMERY OF THE UTILITY MODEL
According to the strong demand of pollutant processing techniques such as development rubbish and mud at present, the utility model aims to provide a rubbish/mud is dried, carbonization, pyrolysis burn combined cycle system, solved present a small amount of rubbish, outside mud is used as fertilizer, most is taken to bury or is stacked in the open, adopt industrial kiln combustion technology to handle rubbish and mud still few to changing waste into valuables, the mode of recycling economy still need advocate vigorously with implement and current processing technology investment is bigger, because the furnace temperature is unstable, harmful gas such as dioxin discharges the problem of holding not good.
The utility model aims to provide a sludge and garbage drying carbonization pyrolysis combustion treatment system, which comprises a dryer, a carbonization furnace, a pyrolysis furnace, a high-temperature fan and an air supply pipeline,
the air inlet end of the dryer is communicated with the exhaust end of the pyrolysis furnace and the exhaust end of the carbonization furnace through pipelines, the discharge port of the dryer is connected with the feed end of the carbonization furnace, the air outlet end of the dryer is connected with a flue gas purification system,
the exhaust end of the carbonization furnace is also connected with the pyrolysis furnace, the air inlet end of the carbonization furnace is connected with the exhaust end of the pyrolysis furnace through an air duct, the air duct is provided with an air inlet, the high-temperature fan is arranged on the air duct, the discharge port of the carbonization furnace is connected with the feed end of the pyrolysis furnace,
the air supply pipeline is connected with the pyrolysis furnace.
The utility model discloses a further technical scheme is: the pyrolysis furnace is a boiler or a hot blast stove which can be used for burning low-calorific-value fuel.
The utility model discloses a further technical scheme is: the pyrolysis furnace is a fluidized bed which is used for pure combustion of 600-1800 kcal/kg low-heat value fuel, and a steam boiler can be arranged at the upper part of the fluidized bed.
The utility model discloses a further technical scheme is: the pyrolysis furnace is a hot blast furnace capable of burning 600-1800 large calorie/kg low-heat value fuel.
The utility model discloses a further technical scheme is: the pyrolysis furnace is a boiling furnace which can be used for pure burning 600-1800 large calorie/kg low-heat value fuel, and a steam boiler can be arranged at the upper part of the boiling furnace.
A method for drying, carbonizing, pyrolyzing and burning sludge and garbage includes such steps as sorting to remove cement fragments and metals, drying the garbage or sludge with water content not higher than 80%, carbonizing the garbage or sludge with water content less than 25%, and burning the carbonized gas and solid products in a pyrolyzing furnace. The required heat source of carbonization process is provided by the partial high temperature tail gas of pyrolysis oven, and the temperature that joins in partial normal atmospheric temperature air temperature and reduce to the operation requirement of carbonization oven gets into the carbonization oven by the drive of high temperature fan after, according to operating parameter, under the circumstances that the burning oxygen suppliment is not enough, can open and mend the phoenix pipeline.
The utility model has the advantages that:
(1) after the sludge and the garbage are dried and carbonized, the grade is greatly improved, and the combustion is more complete and efficient; the whole system is closed in circulation, no peculiar smell is generated, and the field working environment is greatly improved;
(2) the sludge and waste incineration site environment can be greatly improved, waste and sludge with high water content can directly enter a system, the waste/sludge is dried, and a carbonized heat source is provided by tail gas of an incinerator or a boiler to form circulation;
(3) the operation of the whole fluidized bed incinerator device is maintained by the heat (a small amount of low-grade coal can be properly mixed) obtained by self combustion of the sludge and the garbage without additionally providing heat energy; the ash obtained after the sludge incineration has good activity and can be used for being blended with cement to be used as a building material;
(4) high-temperature flue gas generated after incineration of sludge and garbage is used for drying the sludge and garbage with high moisture, and the dried sludge or garbage is sent into a furnace for incineration to form circulation, so that the treatment capacity of the sludge and garbage is greatly improved, the sludge and garbage can be reduced and harmless and finally radical treatment is achieved;
(5) the invention solves the problem of harmless disposal of sludge and garbage with low cost, solves the problem of environmental pollution caused by harmful gases such as dioxin in waste gas, and solves the problem of secondary pollution by using ash slag as building materials with extremely low investment, thereby fundamentally solving the pollution of sludge and garbage.
Drawings
Fig. 1 is a schematic diagram of a sludge and garbage drying carbonization pyrolysis combustion treatment system provided by the utility model.
Reference numerals: 1. the system comprises a dryer, a carbonization furnace 2, a pyrolysis furnace 3, a high-temperature fan 4 and an air supplement pipeline 5.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
The first embodiment is as follows:
FIG. 1 shows a sludge and garbage drying carbonization pyrolysis combustion treatment system, which comprises a dryer 1, a carbonization furnace 2, a pyrolysis furnace 3, a high-temperature fan 4 and an air supply pipeline 5,
the air inlet end of the dryer 1 is communicated with the exhaust end of the pyrolysis furnace 3 and the exhaust end of the carbonization furnace 2 through pipelines, the discharge port of the dryer 1 is connected with the feed end of the carbonization furnace 2, the air outlet end of the dryer 1 is connected with a flue gas purification system,
the exhaust end of the carbonization furnace 2 is also connected with the pyrolysis furnace 3, the air inlet end of the carbonization furnace 2 is connected with the exhaust end of the pyrolysis furnace 3 through an air duct, the air duct is provided with an air inlet, the high-temperature fan 4 is arranged on the air duct, the discharge port of the carbonization furnace 2 is connected with the feed end of the pyrolysis furnace 3,
and the air supplementing pipeline 5 is connected with the pyrolysis furnace 3.
The pyrolysis furnace 3 is a boiler or a hot blast stove which can be used for burning low-calorific-value fuel.
The pyrolysis furnace 3 is a fluidized bed which is used for pure combustion of 600-1800 kcal/kg low-heat value fuel, and a steam boiler can be arranged at the upper part of the fluidized bed.
The pyrolysis furnace 3 is a hot blast furnace which can burn 600-1800 large calorie/kg low-heat value fuel.
The pyrolysis furnace 3 is a fluidized bed furnace which can be used for pure burning of 600-1800 kcal/kg low-heat value fuel, and a steam boiler can be arranged at the upper part of the fluidized bed furnace.
The utility model discloses the theory of operation: through sorting processing, get rid of cement fragment, metal, rubbish or mud that water content is not more than 30% get into drying-machine 1, are dried by pyrolysis oven 3 exhaust high temperature tail gas, and the rubbish or mud that the water content is less than 10% after the stoving gets into carbonization furnace 2 and carries out the carbonization treatment, and the gaseous phase of carbonization and solid phase product all drop into pyrolysis oven 3 and burn. The heat source required in the carbonization process is provided by part of high-temperature tail gas of the pyrolysis furnace, and the heat source is driven by the high-temperature fan 4 to enter the carbonization furnace 2 after the temperature of the part of the normal-temperature air is reduced to 500 ℃. According to the operation parameters, under the condition of insufficient oxygen supply during combustion, the air supply pipeline 5 can be opened for supplement.
The inlet gas of the dryer is connected with the low-heat value pyrolysis furnace and the tail gas inlet flue gas purification system of the dryer. Dry garbage (moisture content < 25%) of the dryer outlet enters the inlet of the carbonization furnace, high-temperature tail gas (400 ℃) of the pyrolysis furnace enters the inlet of the carbonization furnace through the fan and the inlet pipe, so that the inner layer material of the carbonization furnace is subjected to low-temperature and medium-temperature anoxic carbonization, and the inlet pipe is provided with an inlet through which cold air enters. Gas generated in the carbonization process of the materials in the inner layer of the carbonization furnace enters the gas inlet of the pyrolysis furnace through the connecting pipeline, so that harmful gas such as dioxin in the furnace is pyrolyzed at the temperature of more than 800 ℃. After the inner layer material of the carbonization furnace is carbonized, the carbonized material is conveyed to a feed inlet of a low-temperature heat value pyrolysis furnace (pure heat value 600-1800 kilocalories/kg material) through a connecting pipeline, and fuel is provided for the low-heat value pyrolysis furnace.
This pyrolysis incineration boiler of rubbish stoving carbonization pyrolysis combustion processing system for the heating gasification of water gives the air feed of low reaches enterprise, perhaps civilian heating.
And the tail gas waste heat of the carbonization furnace can be connected to the inlet of the dryer through the connecting pipeline to increase heat energy for the dryer, so that the technical cost is reduced. The utility model discloses with extremely low investment (be about below 40% of traditional mud, the refuse combustion processing investment), and the working costs is low (be about below 50% of traditional mud, refuse combustion processing working costs), solves mud, the problem of msw incineration processing.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a mud, rubbish stoving carbonization pyrolysis combustion processing system which characterized in that: the sludge and garbage drying carbonization pyrolysis combustion treatment system comprises a dryer (1), a carbonization furnace (2), a pyrolysis furnace (3), a high-temperature fan (4) and an air supply pipeline (5),
the air inlet end of the dryer (1) is communicated with the exhaust end of the pyrolysis furnace (3) and the exhaust end of the carbonization furnace (2) through pipelines, the discharge port of the dryer (1) is connected with the feed end of the carbonization furnace (2), the air outlet end of the dryer (1) is connected with a flue gas purification system,
the exhaust end of the carbonization furnace (2) is also connected with the pyrolysis furnace (3), the air inlet end of the carbonization furnace (2) is connected with the exhaust end of the pyrolysis furnace (3) through an air duct, an air inlet is arranged on the air duct, the high-temperature fan (4) is arranged on the air duct, the discharge port of the carbonization furnace (2) is connected with the feed end of the pyrolysis furnace (3),
the air supply pipeline (5) is connected with the pyrolysis furnace (3).
2. The system for drying, carbonizing, pyrolyzing, combusting and treating sludge and garbage according to claim 1, which is characterized in that: the pyrolysis furnace (3) is a boiler or a hot blast stove which can be used for burning low-heating-value fuel.
3. The system for drying, carbonizing, pyrolyzing, combusting and treating sludge and garbage according to claim 2, wherein: the pyrolysis furnace (3) is a fluidized bed which is purely fired with 600-1800 kcal/kg of low-heating-value fuel.
4. The system for drying, carbonizing, pyrolyzing, combusting and treating sludge and garbage according to claim 3, wherein: a steam boiler can be arranged at the upper part of the fluidized bed.
5. The system for drying, carbonizing, pyrolyzing, combusting and treating sludge and garbage according to claim 2, wherein: the pyrolysis furnace (3) is a hot blast furnace capable of burning 600-1800 kcal/kg of low-calorific-value fuel.
6. The system for drying, carbonizing, pyrolyzing, combusting and treating sludge and garbage according to claim 2, wherein: the pyrolysis furnace (3) is a boiling furnace which can burn 600-1800 kcal/kg of low-heating-value fuel.
7. The system for drying, carbonizing, pyrolyzing, combusting and treating sludge and garbage according to claim 6, wherein: a steam boiler can be arranged at the upper part of the boiling furnace.
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| CN110805906A (en) * | 2019-12-06 | 2020-02-18 | 湖南天通无腐烟囱工程有限公司 | Sludge and garbage drying carbonization pyrolysis combustion treatment system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110805906A (en) * | 2019-12-06 | 2020-02-18 | 湖南天通无腐烟囱工程有限公司 | Sludge and garbage drying carbonization pyrolysis combustion treatment system and method |
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Effective date of registration: 20201014 Address after: Room 306, No. 418, Fenglin Third Road, high tech Development Zone, Changsha City, Hunan Province Patentee after: Hunan Daqian Huizhi New Energy Technology Co., Ltd Address before: Room 302, floor 3, building B1, Lugu Yuyuan, No. 27, Wenxuan Road, high tech Development Zone, Changsha City, Hunan Province Patentee before: HUNAN TIANTONG NON-CORROSIVENESS CHIMNEY Co.,Ltd. |