CN108249720B - Method for preparing sewage peat by mechanical dehydration coupled drying pyrolysis - Google Patents
Method for preparing sewage peat by mechanical dehydration coupled drying pyrolysis Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 33
- 230000018044 dehydration Effects 0.000 title claims abstract description 30
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 30
- 238000001035 drying Methods 0.000 title claims abstract description 22
- 239000003415 peat Substances 0.000 title claims abstract description 14
- 239000010865 sewage Substances 0.000 title claims description 6
- 239000010802 sludge Substances 0.000 claims abstract description 150
- 238000003763 carbonization Methods 0.000 claims abstract description 32
- 230000008569 process Effects 0.000 claims abstract description 22
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 10
- 238000004806 packaging method and process Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 6
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 238000007711 solidification Methods 0.000 claims abstract description 6
- 230000008023 solidification Effects 0.000 claims abstract description 6
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 50
- 239000003546 flue gas Substances 0.000 claims description 50
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 229910052799 carbon Inorganic materials 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 9
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000002028 Biomass Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 238000004332 deodorization Methods 0.000 claims 1
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 235000015097 nutrients Nutrition 0.000 abstract description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 239000011574 phosphorus Substances 0.000 abstract description 2
- 239000011591 potassium Substances 0.000 abstract description 2
- 229910052700 potassium Inorganic materials 0.000 abstract description 2
- 239000002689 soil Substances 0.000 abstract 1
- 238000009264 composting Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000001877 deodorizing effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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Classifications
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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
-
- 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
- C02F11/008—Sludge treatment by fixation or solidification
-
- 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
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- 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)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention relates to a method for preparing peat by mechanical dehydration and drying pyrolysis, which comprises the steps of sludge receiving and storage, mechanical extrusion dehydration, thermal scattering and drying, medium-temperature pyrolysis and carbonization, heavy metal solidification and carbon material cooling and packaging, wherein high-moisture (80-90%) wet sludge is subjected to deep mechanical extrusion dehydration, thermal drying, pyrolysis and carbonization, heavy metal solidification and other processes to prepare a carbon material, the cost of sludge treatment can be reduced, the sludge is completely reduced, dioxin is not generated in the process, heavy metals in the sludge are solidified, nitrogen, phosphorus, potassium and other nutrient elements in the sludge are reserved, the resultant peat can be safely used for landscaping nutrient soil or fuel, a new way is found for resource utilization of the sludge, and the peat has important social benefits and environmental benefits.
Description
Technical Field
The invention relates to the field of sludge treatment, in particular to a method for preparing peat by mechanical dehydration, coupling, drying and pyrolysis.
Background
With the rapid development of the social economy and the urbanization process of China, the scale of the urban sewage treatment plant is continuously enlarged, and the sludge production is greatly increased. At present, the sludge is mainly treated by aerobic composting, landfill, incineration and the like.
The aerobic composting of sludge can utilize organic components in the sludge, but because heavy metals in the sludge can not be solidified in the composting process, the heavy metals are released to the environment, the agricultural department strictly prohibits the sludge fertilizer from entering farmlands, and simultaneously a large amount of base materials are required to be added in the aerobic process, so that the reduction is not caused, and the increment is caused, so that the method has risks.
The sludge incineration technology can realize the complete reduction of the sludge, and at present, two modes exist, one mode is that the sludge with the water content of 80% is directly incinerated, the sludge heat value is zero or negative, the impact on a boiler is large, the blending combustion proportion does not exceed 5% of the fuel, and the treatment capacity is limited. The other method is sludge drying and then incineration, and the mode solves the problem of combustion impact on the boiler. However, dioxin is easily generated in an incineration mode, and the dioxin is generated when sludge is mixed and burnt in the existing boiler, so that almost all power station boilers are not provided with dioxin treatment facilities, and the risk of dioxin emission exists.
Disclosure of Invention
The invention aims to provide a method for preparing peat by mechanical dehydration, coupling, drying and pyrolysis.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for preparing peat by mechanical dehydration coupled drying pyrolysis comprises the steps of sludge receiving and storing, mechanical extrusion dehydration, thermal scattering and drying, medium-temperature pyrolysis carbonization, heavy metal solidification and carbon material cooling and packaging, and comprises the following specific steps:
(1) wet sludge with the water content of about 80 percent, which is transported by a sewage plant vehicle, is sent into a sludge receiving and storing bin after being weighed and measured by a truck scale for receiving and temporarily storing;
(2) the sludge pump at the bottom of the sludge receiving and storing bin is used for conveying the sludge to the mechanical dehydration feeding device through a pipeline, the moisture content of the sludge is reduced from 80% to about 60% after the sludge is conveyed to the mechanical dehydration feeding device through the mechanical dehydration feeding device, and the sludge is reduced by at least 50% in the process;
(3) after being discharged by a mechanical dehydration discharging device, semi-dry sludge with the water content of about 60 percent is fed into a sludge dryer by a dryer feeding device, a material copying plate and a scattering mechanism are arranged in the sludge dryer, the sludge is subjected to violent heat and mass transfer in the drying process of flue gas, the water content of the sludge is reduced to 30-40 percent from 60 percent, and then the sludge is discharged from the tail end of the dryer; collecting the flue gas carrying dust by a cyclone separator, collecting the flue gas and dried sludge discharged from the tail end of a dryer, and sending the collected flue gas and the dried sludge into a sludge carbonization furnace feeding device;
(4) the method comprises the following steps that sludge with the moisture content of 30-40% after drying is sent into a central barrel of the sludge carbonization furnace by a sludge carbonization furnace feeding device, an inner barrel rotates slowly in a carbonization process, the sludge is heated to the temperature of 500-plus-700 ℃ in the inner barrel for thermal decomposition, the sludge carbon after pyrolysis is discharged from the tail end of the sludge carbonization furnace and is sent to a sludge carbon cooling device, and the sludge carbon is cooled to the normal temperature;
(5) and conveying the cooled sludge carbon to a sludge carbon storage bin through a sludge carbon lifting and conveying device, conveying the sludge carbon to a sludge carbon packaging machine from the bottom, and transporting the sludge carbon to the outside after packaging.
Specifically, in the step 4), pyrolysis gas is released in the pyrolysis process of the sludge in the sludge carbonization furnace, the pyrolysis gas is sent into a pyrolysis gas combustion tower and then is combusted to generate high-temperature flue gas, and when the heat value of the sludge is low, biomass fuel or natural gas is supplemented to supplement heat.
Specifically, the high-temperature flue gas generated by the pyrolysis gas combustion tower in the step 4) is adjusted to have a temperature of 800-900 ℃ and is sent to a plurality of high-temperature flue gas inlets at the bottom of the sludge carbonization furnace; after heat is released to a sludge carbonization process, the heat is discharged from the tail end of a cylinder and sent into a sludge dryer to be in contact with sludge for heat exchange, the temperature of flue gas after heat exchange is reduced to 100-130 ℃, the flue gas is discharged from an outlet of the sludge dryer, dedusted by a cyclone dust collector and sent into a water washing deduster by an induced draft fan to remove dust in the flue gas, the flue gas after dedusting enters a deacidification tower, the flue gas is circularly washed by alkali liquor in the process to remove sulfur dioxide acid gas in the flue gas, the flue gas after deacidification enters a deodorizing device to remove volatile organic matters in the flue gas, and finally enters a de-whitening device, and after moisture in the flue gas is deeply removed, the flue gas reaches the standard and is discharged.
The invention has the following beneficial effects: the method for preparing the peat is to prepare the high-moisture (80-90%) wet sludge into the carbon material after the processes of deep mechanical extrusion dehydration, thermal drying, pyrolysis carbonization, heavy metal solidification and the like, so that the cost of sludge treatment can be reduced, the sludge can be thoroughly reduced, dioxin is not generated in the process, the heavy metal in the sludge is solidified, the nutrient elements such as nitrogen, phosphorus and potassium in the sludge are reserved, the product peat can be safely used for landscaping or fuel, a new way is found for recycling the sludge, and the peat has important social benefits and environmental benefits.
Drawings
FIG. 1 is a schematic view of a process for preparing peat by mechanical dehydration, drying and pyrolysis according to the present invention.
1. Truck scale, 2, mud is received and is stored the storehouse, 3, the sludge pump, 4, mechanical dehydration feed arrangement, 5, mechanical dehydration device, 6, mechanical dehydration discharging device, 7, desiccator feed arrangement, 8, sludge drying machine, 9, cyclone, 10, sludge carbonization stove feed arrangement, 11, sludge carbonization stove, 12, high temperature flue gas inlet, 13, sludge char cooling device, 14, sludge char promote conveyor, 15, sludge char storage storehouse, 16, sludge char packagine machine, 17, loading attachment, 18, pyrolysis gas combustion tower, 19, draught fan, 20, washing dust remover, 21, deacidification tower, 22, deodorizing device, 23, the white device that takes off.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the scope of the present invention is not limited to these examples. All changes, modifications and equivalents that do not depart from the spirit of the invention are intended to be included within the scope thereof.
As shown in fig. 1, a method for preparing peat by mechanical dehydration, coupling, drying and pyrolysis comprises the following steps of sludge receiving and storing, mechanical extrusion and dehydration, thermal dispersion and drying, medium-temperature pyrolysis and carbonization, heavy metal solidification and carbon material cooling and packaging:
(1) wet sludge with the water content of about 80 percent, which is transported by an automobile of a sewage plant, is weighed and metered by an automobile scale 1 and then is sent into a sludge receiving and storing bin 2 for receiving and temporarily storing;
(2) the sludge is sent to a mechanical dehydration feeding device 4 through a pipeline by a sludge pump 3 at the bottom of a sludge receiving and storing bin 2, the water content of the sludge is reduced from 80% to about 60% after the sludge is sent to a mechanical dehydration device 5 by the mechanical dehydration feeding device 4, and the sludge is reduced by at least 50% in the process;
(3) after being discharged by a mechanical dehydration discharging device 6, semi-dry sludge with the water content of about 60 percent is sent into a sludge dryer 8 by a dryer feeding device 7, a material copying plate and a scattering mechanism are arranged inside the sludge dryer 8, the sludge is subjected to violent heat and mass transfer in the drying process with flue gas, the water content of the sludge is reduced from 60 percent to 30-40 percent, and then the sludge is discharged from the tail end of the dryer; collecting the flue gas carrying dust by a cyclone separator 9, collecting the flue gas and dried sludge discharged from the tail end of a dryer, and sending the collected flue gas and the dried sludge into a sludge carbonization furnace feeding device 10;
(4) the method comprises the following steps that a sludge carbonization furnace feeding device 10 sends sludge with the water content of 30-40% after drying into a central cylinder of a sludge carbonization furnace 11, the inner cylinder rotates slowly in a carbonization process, the sludge is heated to 500-700 ℃ in the inner cylinder for thermal decomposition, the sludge carbon after pyrolysis is discharged from the tail end of the sludge carbonization furnace 11 and is sent to a sludge carbon cooling device 13 to be cooled to the normal temperature;
(5) the cooled sludge carbon is conveyed to a sludge carbon storage bin 15 through a sludge carbon lifting and conveying device 14, conveyed to a sludge carbon packaging machine 16 from the bottom, and then is transported outside after being packaged.
In the step 4), pyrolysis gas is released in the sludge pyrolysis process in the sludge carbonization furnace 11, the pyrolysis gas is sent into the pyrolysis gas combustion tower 18 and then combusted to generate high-temperature flue gas, and when the heat value of the sludge is low, biomass fuel is supplemented by the feeding device 17 or natural gas is directly introduced to supplement heat.
The high-temperature flue gas generated by the pyrolysis gas combustion tower 18 in the step 4) is adjusted to have a temperature of 800-900 ℃ and is sent to a plurality of high-temperature flue gas inlets 12 at the bottom of the sludge carbonization furnace 11; after heat is released to a sludge carbonization process, the heat is discharged from the tail end of the cylinder and then sent into a sludge dryer 8 to be in contact with sludge for heat exchange, the temperature of flue gas after heat exchange is reduced to 100-130 ℃, the flue gas is discharged from the outlet of the sludge dryer 8, dedusted by a cyclone dust collector 9, sent into a water washing deduster 20 by an induced draft fan 19 to remove dust in the flue gas, the dedusted flue gas enters a deacidification tower 21, the acidic gas of sulfur dioxide in the flue gas is removed after alkali liquor circulation washing in the process, the deacidified flue gas enters a deodorizing device 22 to remove volatile organic matters in the flue gas, and finally enters a de-whitening device 23, and after moisture in the flue gas is deeply removed, the flue gas is discharged to the atmosphere after reaching the.
The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (1)
1. A method for preparing peat by mechanical dehydration coupled drying pyrolysis is characterized by comprising the following steps of sludge receiving and storing, mechanical extrusion dehydration, thermal dispersion drying, medium-temperature pyrolysis carbonization, heavy metal solidification and carbon material cooling and packaging:
(1) wet sludge with the water content of about 80 percent, which is transported by a sewage plant vehicle, is sent into a sludge receiving and storing bin after being weighed and measured by a truck scale for receiving and temporarily storing;
(2) the sludge pump at the bottom of the sludge receiving and storing bin is used for conveying the sludge to the mechanical dehydration feeding device through a pipeline, the moisture content of the sludge is reduced from 80% to about 60% after the sludge is conveyed to the mechanical dehydration feeding device through the mechanical dehydration feeding device, and the sludge is reduced by at least 50% in the process;
(3) after being discharged by a mechanical dehydration discharging device, semi-dry sludge with the water content of about 60 percent is fed into a sludge dryer by a dryer feeding device, a material copying plate and a scattering mechanism are arranged in the sludge dryer, the sludge is subjected to violent heat and mass transfer in the drying process of flue gas, the water content of the sludge is reduced to 30-40 percent from 60 percent, and then the sludge is discharged from the tail end of the dryer; collecting the flue gas carrying dust by a cyclone separator, collecting the flue gas and dried sludge discharged from the tail end of a dryer, and sending the collected flue gas and the dried sludge into a sludge carbonization furnace feeding device;
(4) the method comprises the following steps that a sludge carbonization furnace feeding device feeds dried sludge with the water content of 30-40% into a central barrel of a sludge carbonization furnace, an inner barrel rotates slowly in a carbonization process, the sludge is heated to 500-700 ℃ in the inner barrel for thermal decomposition, pyrolyzed sludge carbon is discharged from the tail end of the sludge carbonization furnace and is sent to a sludge carbon cooling device to be cooled to normal temperature; in the pyrolysis process of the sludge in the sludge carbonization furnace, pyrolysis gas is released, the pyrolysis gas is sent into a pyrolysis gas combustion tower and then is combusted to generate high-temperature flue gas, and when the heat value of the sludge is lower, biomass fuel is supplemented by a feeding device or natural gas is directly supplemented to supplement heat;
adjusting the temperature of high-temperature flue gas generated by the pyrolysis gas combustion tower to 800-900 ℃, and feeding the high-temperature flue gas into a plurality of high-temperature flue gas inlets at the bottom of the sludge carbonization furnace; after heat is released to a sludge carbonization process, the heat is discharged from the tail end of a cylinder and then sent into a sludge dryer to be in contact with sludge for heat exchange, the temperature of flue gas after heat exchange is reduced to 100-130 ℃, the flue gas is discharged from an outlet of the sludge dryer, dedusted by a cyclone deduster, sent into a water washing deduster by an induced draft fan to remove dust in the flue gas, the flue gas after dedusting enters a deacidification tower, is circularly washed by alkali liquor in the process to remove sulfur dioxide acid gas in the flue gas, the flue gas after deacidification enters a deodorization device to remove volatile organic matters in the flue gas, finally enters a de-whitening device, and is discharged to the atmosphere after reaching the standard after deeply removing moisture in the flue gas;
(5) and conveying the cooled sludge carbon to a sludge carbon storage bin through a sludge carbon lifting and conveying device, conveying the sludge carbon to a sludge carbon packaging machine from the bottom, and transporting the sludge carbon to the outside after packaging.
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| CN201810206001.XA CN108249720B (en) | 2018-03-13 | 2018-03-13 | Method for preparing sewage peat by mechanical dehydration coupled drying pyrolysis |
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| CN201810206001.XA CN108249720B (en) | 2018-03-13 | 2018-03-13 | Method for preparing sewage peat by mechanical dehydration coupled drying pyrolysis |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110304805B (en) * | 2019-02-18 | 2023-04-21 | 北京智为蓝科技有限公司 | Sludge heat drying and carbonization energy-saving system |
| CN110746070A (en) * | 2019-11-19 | 2020-02-04 | 江苏中顺节能科技有限公司 | Biomass gas-carbon co-production coupling sludge deep treatment system and method |
| CN110759626A (en) * | 2019-11-26 | 2020-02-07 | 山东金孚环境工程有限公司 | Sludge conditioning dehydration coupling carbonization reduction treatment method and system |
| CN110759627A (en) * | 2019-11-26 | 2020-02-07 | 山东金孚环境工程有限公司 | Sludge indirect heat exchange evaporation dehydration coupling pyrolysis carbonization method and system |
| CN113526808A (en) * | 2021-07-19 | 2021-10-22 | 天津大学 | Preparation method of sludge-based biochar and sludge-based biochar |
| CN114195347A (en) * | 2021-12-23 | 2022-03-18 | 青岛蓝博环境科技有限公司 | Sludge pyrolysis carbonization process |
| CN114106836A (en) * | 2021-12-23 | 2022-03-01 | 青岛蓝博环境科技有限公司 | Sludge carbonization product as soil conditioner |
| CN114195356A (en) * | 2021-12-23 | 2022-03-18 | 青岛蓝博环境科技有限公司 | Sludge carbonization product as sludge dewatering promoter |
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| JP2005305314A (en) * | 2004-04-22 | 2005-11-04 | Chiyoda Engineering Kk | System for treating waste liquid containing solid |
| CN102658283A (en) * | 2012-05-07 | 2012-09-12 | 浙江利保环境工程有限公司 | New process for treating solid waste by taking thermal conditioning as secondary and pyrolysis as primary |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2050900T3 (en) * | 1990-09-01 | 1994-06-01 | Aicher Max | PROCEDURE AND DEVICE FOR THE TREATMENT OF CLARIFICATION SLUDGE. |
| RU2008138293A (en) * | 2008-09-25 | 2010-03-27 | Государственное образовательное учреждение высшего профессионального образования "Пермский государственный технический университет | METHOD FOR TREATMENT OF SEDIMENTS OF WASTE WATER, OVER ACTIVE Sludge And Oil Sludge |
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| JP2005305314A (en) * | 2004-04-22 | 2005-11-04 | Chiyoda Engineering Kk | System for treating waste liquid containing solid |
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