WO2012097659A1 - 非接触式烟气余热污泥干化系统 - Google Patents
非接触式烟气余热污泥干化系统 Download PDFInfo
- Publication number
- WO2012097659A1 WO2012097659A1 PCT/CN2011/084197 CN2011084197W WO2012097659A1 WO 2012097659 A1 WO2012097659 A1 WO 2012097659A1 CN 2011084197 W CN2011084197 W CN 2011084197W WO 2012097659 A1 WO2012097659 A1 WO 2012097659A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flue gas
- heat
- sludge
- transfer medium
- gas waste
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/001—Heating arrangements using waste heat
-
- 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
-
- 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
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
-
- 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
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Definitions
- Drying can be divided into mechanical type and heat source drying type.
- the mechanical type is characterized by mechanical energy capable of generating high pressure, fully utilizing the function of mechanical energy, and directly acting on wet sludge for rapid dehydration; without using heat source, no need Heating, no greenhouse gas production; equipment closure will not cause sludge to overflow, odor centralized treatment to avoid secondary pollution; high degree of automation, modular assembly; filtered water automatically flush filter plate, no external water source required; The investment is large, the operating cost is high, and the treated sludge has a high water content.
- Heat source drying is done by heat, which is usually produced by energy combustion. According to the form of heat utilization, it can be divided into two categories:
- Direct use Directly introduce high-temperature flue gas into the dryer to exchange heat between the gas and the wet material. This method is characterized by high efficiency of heat utilization, but if the material to be dried is polluting, it will also cause emission problems, because the entry of high-temperature flue gas is continuous, so it also causes the same flow rate and materials. Directly exposed exhaust gases must be treated after special treatment.
- Indirect use The heat of high-temperature flue gas is passed through a heat exchanger to a medium, which may be heat transfer oil, steam or air.
- the medium circulates in a closed loop and is not in contact with the material being dried.
- the smoke is partially discharged after the heat is partially used.
- direct or indirect heating has different thermal efficiency losses and also has different environmental impacts.
- the main cost of drying is heat, and the key to reducing costs is the ability to select and utilize the right heat source.
- waste heat flue gas from large-scale, environmentally-friendly infrastructure is a zero-cost energy source, and if it can be utilized, it is the best energy source for heat drying.
- the flue gas emitted by the boiler contains acid gas. When the temperature of the flue is high, they will flow through the heated surfaces of the boiler in a gaseous state until they are removed into the desulfurization tower.
- the boiler exhaust gas temperature is usually designed to be higher, the new boiler At around 140 °C, it tends to be as high as 170 °C after running for a while. This part of the flue gas will generally condense the corrosion heat exchange equipment when the smoke temperature is lower than the acid dew point. This is a problem that cannot be avoided without direct or indirect drying.
- the invention patent of CN1686879A entitled "Series sludge drying system utilizing waste heat of thermal power plant flue gas", discloses a direct use of flue gas contact type drying sludge system.
- flue gas contact type drying sludge system For contact drying directly using flue gas, in addition to the problem of acid dew corrosion, there is also the need to reprocess the flue gas after drying the sludge, the amount of flue gas is large, and the treatment cost is high;
- the non-contact drying of gas the exhaust temperature of 140 °C is converted into hot water, which is relatively low compared to the flue gas contact type hot water, and the requirements for the dryer are higher. Summary of the invention
- the problem to be solved by the present invention is to provide a non-contact flue gas waste heat sludge drying system that overcomes the above problems in the prior art.
- the invention relates to a non-contact flue gas waste heat sludge drying system, which comprises a dryer, and further comprises an economizer, a high temperature flue gas waste heat recovery device and an air preheater arranged in the flue according to the direction of the flue gas flow.
- a heater is arranged in the dryer, and a high temperature flue gas waste heat recovery device is connected to the heater through a circulation pipe, a heat transfer medium is arranged in the circulation pipe, a heat transfer medium driving device is arranged on the circulation pipe, and a dryer is provided Connected to the sludge vapor recovery system.
- the invention further comprises a low-temperature flue gas waste heat recovery device, which is composed of a connected heat absorption section and a heat release section, wherein the heat absorption section is disposed in the flue behind the air preheater, and the air outlet of the heat release section and the air outlet The pre-connector is connected.
- the heat transfer medium of the present invention is hot air, and the heat transfer medium drive device is a fan.
- the sludge vapor recovery system of the present invention comprises a condenser, a circulation fan and a sewage treatment system, wherein the condenser is connected to the dryer by a circulation gas pipe, and a circulation fan, a drain port and a sewage of the condenser are arranged on the circulation gas pipe.
- the processing system is connected.
- the condenser of the present invention is provided with a shower head, and the shower head is connected with the feed water pump.
- the non-contact flue gas waste heat sludge drying system of the present invention is different from other direct flue gas and sludge contact drying, but first converts boiler flue gas waste heat into steam, hot water or Hot air, then use steam, hot water or hot air to heat the sludge to dry it, and to avoid the waste gas corrosion of the flue gas, maximize the use of flue gas waste heat, reduce the energy consumption of sludge drying, reduce pollution Drying operation costs of mud.
- Figure 1 is a structural view of a first embodiment of the present invention.
- Figure 2 is a structural view of a second embodiment of the present invention.
- 1-economizer 2-high temperature flue gas waste heat recovery unit; 3-air preheater; 4-boiler tail flue; 5-heat absorption section; 6-heat release section; 7-control device; 8-cycle Fan; 9-condenser; 10-feed pump; 11-sludge bin; 12-dryer; 13-circulation pump; 14-electric control valve; 15-fan; 16-dryer; 18- Condenser nozzle; 19-temperature sensor.
- the non-contact flue gas waste heat sludge drying system of the present invention is described in detail with reference to specific embodiments, as follows: As shown in FIG. 1, a specific embodiment of a non-contact flue gas waste heat sludge drying system of the present invention, The steam is dried by using steam and hot water as a heat transfer medium, and includes a sludge tank 11 and a dryer 12 connected in series, and an economizer which is sequentially disposed in the tail flue 4 of the boiler according to the direction of the flue gas flow. 1.
- the sludge is stored in the sludge tank 11 and a push plate device is arranged in the sludge tank 11 to be operated by hydraulic or electric devices to prevent sludge slagging from affecting discharge.
- the dryer 12 transfers heat from steam or hot water to the sludge, evaporates the sludge water, and is carried out by the circulating air.
- a sludge vapor recovery system in which the circulating fan 8 draws water vapor and a part of the volatile gas generated by the sludge dryer 12 through a circulating gas pipe into the condenser 9 and condenses and circulates into the dryer 12 .
- the condenser 9 adopts the method of water spray condensation, the condensed water comes from the pool, passes through the feed water pump 10, enters the spray condenser, is atomized by the shower head 18, and is in full contact with the circulating air, and the air is cooled and discharged from the upper part of the condenser 9, After the air is cooled, part of the water vapor condenses into liquid water, and the condensed water is discharged from the bottom outlet of the condenser and enters the sewage treatment system 17 for treatment.
- the dryer can be designed to be one or more stages depending on the amount of sludge treated, the degree of drying of the sludge, the temperature and flow rate of the flue gas.
- An exhaust pipe is installed in the circulating air pipe, and the gas is connected to the nearby incinerator through the exhaust pipe, and the volatile matter is recovered by incineration. Energy, and eliminate stench, or use other treatments to reduce environmental pollution.
- the flue gas at the outlet of the economizer 1 is different according to the furnace. Generally, at about 300 °C, after the air preheater 3, the heat is exchanged to the cold air, and the cold air is heated to the furnace of the boiler. As the wind for combustion, the flue gas is cooled and desulfurized and discharged to the atmosphere.
- the high-temperature flue gas waste heat recovery device 2 is installed between the economizer 1 and the air preheater 3. Since the flue gas temperature is about 300 ° C, it can produce steam or hot water of a high grade relative to sludge drying. According to the difference of the dryter, steam or hot water can be selected.
- the heat section 5 and the heat release section 6, the heat absorption section is disposed in the flue behind the air preheater, and the heat release section 6 is placed in the inlet flue of the air preheater, and the heat recovered in the heat absorption section is returned to the air by the heat release section 6.
- the smoke temperature control system is also included, the temperature sensor 19 is provided on the heat absorption section, and the high temperature flue gas waste heat recovery device 2 and the sludge are provided.
- the electric regulating valve 14 on the pipe to which the dryer 12 is connected is connected to the temperature controller 19 and the electric regulating valve 14 via the control device 7.
- the hot air is used as a heat transfer medium to dry the sludge, including the dryer 16, and further includes an economizer 1 and a high temperature flue gas waste heat recovery device 2 which are sequentially arranged in the boiler tail flue 4 according to the direction of the flue gas flow.
- the air preheater 3 the high temperature flue gas waste heat recovery device 2 is connected to the heater in the dryer through a circulation pipe, and the heat transfer medium is arranged in the circulation pipe, the heat transfer medium is hot air, and the hot air is recovered from the high temperature flue gas waste heat recovery device.
- An electric regulating valve 14 is disposed on the pipe flowing to the dryer 16 and the hot air is drawn back into the high temperature flue gas waste heat recovery unit 2 by the fan 15.
- the dryer 16 has an internal structure suitable for the heat transfer medium to be hot air
- the dryer 12 has an internal structure suitable for the heat transfer medium to be steam or hot water.
- the other structure of this embodiment is the same as that of the above embodiment.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Sustainable Development (AREA)
- Hydrology & Water Resources (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013549698A JP5913369B2 (ja) | 2011-01-21 | 2011-12-19 | 非接触形の排気余熱汚泥乾燥システム |
DE112011104756.8T DE112011104756B4 (de) | 2011-01-21 | 2011-12-19 | Anlage zur berührungslosen Schlammtrocknung mittels Rauchgasabwärme |
US13/980,171 US20130305554A1 (en) | 2011-01-21 | 2011-12-19 | Non-contact Sludge Drying System With Flue Gas Heat |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201110023624.1 | 2011-01-21 | ||
CN2011100236241A CN102167488B (zh) | 2011-01-21 | 2011-01-21 | 非接触式烟气余热污泥干化系统 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012097659A1 true WO2012097659A1 (zh) | 2012-07-26 |
Family
ID=44488842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2011/084197 WO2012097659A1 (zh) | 2011-01-21 | 2011-12-19 | 非接触式烟气余热污泥干化系统 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20130305554A1 (zh) |
JP (1) | JP5913369B2 (zh) |
CN (1) | CN102167488B (zh) |
DE (1) | DE112011104756B4 (zh) |
TW (1) | TW201235309A (zh) |
WO (1) | WO2012097659A1 (zh) |
Cited By (3)
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EP2933030A4 (en) * | 2012-12-06 | 2016-09-21 | Korea Inst Construction Tech | WASTE TREATMENT SYSTEM CONNECTED TO WASTEWATER TREATMENT STATION |
CN111762989A (zh) * | 2020-06-05 | 2020-10-13 | 北京云水浩瑞环境科技有限公司 | 污泥干燥热解系统和方法 |
CN111847836A (zh) * | 2020-07-24 | 2020-10-30 | 广东能源集团科学技术研究院有限公司 | 一种太阳能再热烟气干化污泥系统 |
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CN102167488B (zh) * | 2011-01-21 | 2012-11-21 | 上海伏波环保设备有限公司 | 非接触式烟气余热污泥干化系统 |
TWI458926B (zh) * | 2011-10-26 | 2014-11-01 | Au Optronics Corp | 密閉空氣循環污泥乾燥機 |
CN102873087A (zh) * | 2012-10-10 | 2013-01-16 | 北京中科通用能源环保有限责任公司 | 土壤修复系统及土壤修复方法 |
CN103104922B (zh) * | 2013-02-06 | 2015-09-02 | 西安宇清环境工程科技有限责任公司 | 一种垃圾焚烧烟气余热回收装置 |
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CN110953594B (zh) * | 2019-10-31 | 2024-09-20 | 上海市政工程设计研究总院(集团)有限公司 | 多段干燥机及流化床焚烧炉处理污泥并回收能源的系统 |
GB2592194B (en) * | 2020-02-17 | 2024-01-10 | Fjell Biodry As | Sludge drying system |
CN111439909B (zh) * | 2020-04-14 | 2022-07-15 | 湖南清源智造设备有限公司 | 污泥脱水干化焚烧热电联产处理系统 |
CN112570638A (zh) * | 2020-11-24 | 2021-03-30 | 浙江瑞朗锻造有限公司 | 一种辊锻造机的辊锻造模具预热装置 |
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CN115367980A (zh) * | 2022-07-13 | 2022-11-22 | 北京首创污泥处置技术有限公司 | 利用发电厂烟气余热干化污泥的系统及方法 |
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2011
- 2011-01-21 CN CN2011100236241A patent/CN102167488B/zh not_active Expired - Fee Related
- 2011-12-19 JP JP2013549698A patent/JP5913369B2/ja not_active Expired - Fee Related
- 2011-12-19 US US13/980,171 patent/US20130305554A1/en not_active Abandoned
- 2011-12-19 WO PCT/CN2011/084197 patent/WO2012097659A1/zh active Application Filing
- 2011-12-19 DE DE112011104756.8T patent/DE112011104756B4/de not_active Expired - Fee Related
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2012
- 2012-01-16 TW TW101101627A patent/TW201235309A/zh not_active IP Right Cessation
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CN1807292A (zh) * | 2006-02-17 | 2006-07-26 | 浙江大学 | 利用烟气余热与外供热源相结合的能源干化污泥的方法 |
KR20100055192A (ko) * | 2008-11-17 | 2010-05-26 | 이영성 | 슬러지 건조시스템 |
CN101817629A (zh) * | 2010-03-30 | 2010-09-01 | 浙江大学 | 污泥干化焚烧发电一体化方法和装置 |
CN201942604U (zh) * | 2011-01-21 | 2011-08-24 | 上海伏波环保设备有限公司 | 非接触式烟气余热污泥干化系统 |
CN102167488A (zh) * | 2011-01-21 | 2011-08-31 | 上海伏波环保设备有限公司 | 非接触式烟气余热污泥干化系统 |
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EP2933030A4 (en) * | 2012-12-06 | 2016-09-21 | Korea Inst Construction Tech | WASTE TREATMENT SYSTEM CONNECTED TO WASTEWATER TREATMENT STATION |
CN111762989A (zh) * | 2020-06-05 | 2020-10-13 | 北京云水浩瑞环境科技有限公司 | 污泥干燥热解系统和方法 |
CN111847836A (zh) * | 2020-07-24 | 2020-10-30 | 广东能源集团科学技术研究院有限公司 | 一种太阳能再热烟气干化污泥系统 |
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TW201235309A (en) | 2012-09-01 |
US20130305554A1 (en) | 2013-11-21 |
DE112011104756T5 (de) | 2013-11-14 |
JP5913369B2 (ja) | 2016-04-27 |
CN102167488B (zh) | 2012-11-21 |
TWI421221B (zh) | 2014-01-01 |
CN102167488A (zh) | 2011-08-31 |
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