CN202508961U - Comprehensive utilization system of sludge classification split-phase anaerobic digestion and waste heat of marsh gas power generating set - Google Patents
Comprehensive utilization system of sludge classification split-phase anaerobic digestion and waste heat of marsh gas power generating set Download PDFInfo
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- CN202508961U CN202508961U CN2011204667798U CN201120466779U CN202508961U CN 202508961 U CN202508961 U CN 202508961U CN 2011204667798 U CN2011204667798 U CN 2011204667798U CN 201120466779 U CN201120466779 U CN 201120466779U CN 202508961 U CN202508961 U CN 202508961U
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The utility model provides a comprehensive utilization system of sludge classification split-phase anaerobic digestion and waste heat of a marsh gas power generating set. A preheat pond of the system is connected with a softening water tank device which is connected with the marsh gas power generating set. The marsh gas power generating set is connected with a heat balance water tank which is connected with a high-temperature hydrolysis reaction pond and a medium-temperature anaerobic digestion pond. The high-temperature hydrolysis reaction pond is respectively connected with the marsh gas power generating set, a heating pond and the medium-temperature anaerobic digestion pond. The medium-temperature anaerobic digestion pond is connected with the marsh gas power generating set which is connected with a smoke waste heat boiler, and the smoke waste heat boiler is connected with the heating pond. According the comprehensive utilization system, waste heat with different temperatures is used in a stairstep mode in the marsh gas power generating process, generated power of the marsh gas power generating set is directly used, and a recycling utilization rate of calorific value of the marsh gas power generating system is more than 83%.
Description
Technical field
The utility model belongs to the energy-saving and cost-reducing technical field of sewage work, relates to the energy-optimised integrated system that a kind of mud classification phase-splitting anaerobic digestion and marsh gas power generation unit residual heat integrative are recycled combination.
Background technology
Along with the raising gradually of quickening of urbanization process and environmental protection requirement, municipal sewage plant's quantity increases day by day.At present, all adopt activated sludge process above 90% municipal sewage treatment in the world, because the excess sludge generation generally is 0.5 ‰ of sewage load～0.8 ‰ (in water ratio 80%); The water ratio of mud is generally at 98.5-99.5%, and water ratio is high, and organic content is high; Character is unstable; It is smelly to be prone to corruption, and contains hazardous and noxious substances such as pathogenic bacteria, parasitic ovum, heavy metal, makes the treatment and disposal of mud become the major issue in the sewage work.The sludge treatment investment accounts for the 20%-50% (some developed country's sludge treatment investments abroad account for the 50%-70% of Sewage Plant gross investment) of Sewage Plant gross investment.Municipal sludge treatment and disposal working cost is high to have become an important factor that limits its development, and the sludge treatment disposal technology of greatly developing cheap low consumption has become the task of top priority.
Abundant organic composition makes the anaerobic digestion of mud become one of important channel of sludge treatment disposal in the mud.Mud classification phase-splitting anaerobic digestion is the process that under the condition of anaerobic, is produced carbonic acid gas and methane by amphimicrobe and obligatory anaerobic bacteria decomposing organic matter.Mud classification phase-splitting anaerobic digestion is because of having the sludge volume of minimizing, stablize sludge quality, producing methane gas; Mud is in digestive process simultaneously; The methanobacteria that produces has very strong anti-microbial effect; Can kill most of pathogenic bacteria and other harmful microorganism, make the mud sanitisation, particularly the thermophilic digestion sterilizing ability increases substantially.Mud classification phase-splitting anaerobic digestion; High-temperature hydrolysis pond temperature of reaction is controlled at 40-50 ℃; Anaeration in normal temperature digester temperature of reaction is controlled at 35-38 ℃; Anaeration in normal temperature digestion (35-38 ℃) with conventional is compared, and needs great amount of heat energy, thereby causes running cost too high and limited application greatly because of it expends the energy.
Summary of the invention
The utility model is in order to solve the bigger problem of the energy that expends that exists in the existing mud classification phase-splitting anaerobic digestion techniques, and then provides a kind of mud classification phase-splitting anaerobic digestion and marsh gas power generation unit residual heat integrative to utilize system.
The purpose of the utility model realizes through following technical scheme:
Mud classification phase-splitting anaerobic digestion and marsh gas power generation unit residual heat integrative utilize system; This system comprises preheating pond, heating bath, high-temperature hydrolysis pond, anaeration in normal temperature digester, marsh gas power generation unit, smoke and waste steam boiler, thermal equilibrium water pot, softening water tank equipment, mud mud interchanger, muddy water interchanger and water water-to-water heat exchanger equipment; Said preheating pond is connected with said softening water tank equipment; Said softening water tank equipment is connected with said marsh gas power generation unit; Said marsh gas power generation unit is connected with said thermal equilibrium water pot; Said thermal equilibrium water pot is connected with said anaeration in normal temperature digester with said high-temperature hydrolysis pond, and said high-temperature hydrolysis pond is connected with said marsh gas power generation unit, said heating bath and said anaeration in normal temperature digester respectively, and said anaeration in normal temperature digester is connected with said marsh gas power generation unit; Said marsh gas power generation unit is connected with said smoke and waste steam boiler, and said smoke and waste steam boiler is connected with said heating bath.The waste heat of differing temps carries out cascade utilization respectively in the marsh gas power generation process, and the biogas generator generating can directly utilize, and methane power generating system calorific value recovery utilization rate is greater than more than 83%.
The utlity model has following beneficial effect: 1) mud classification phase-splitting anaerobic digestion techniques and marsh gas power generation unit residual heat integrative utilization technology are combined; The waste heat of differing temps carries out cascade utilization respectively in the marsh gas power generation process; Reclaim the thermal source of calorific value as classification phase-splitting anaerobic digestion; Energy obtains fully and reasonable use, the new integrated technology that formed sludge treating system electricity, heat, can fully utilize.2) mud mud interchanger.High-temperature hydrolysis pond mud to anaeration in normal temperature digester sludge calorific value reclaims through mud mud interchanger, makes full use of system's calorific value; 3) save energy.The heat energy of mud classification phase-splitting anaerobic digestion is from the waste heat of marsh gas power generation unit, and classification phase-splitting anaerobic digester system produces biogas, and biogas drives power unit, and marsh gas power generation unit waste heat is used for high temperature, the required heat energy of warm anaerobic sludge digestion.Compare energy-conservation mass energy with fuel boiler.4) free from environmental pollution.Use the thermal source of marsh gas power generation unit waste heat, avoided the topsoil of using conventional boiler to cause as sludge high temperature, anaeration in normal temperature digestion.5) thermal source to differing temps carries out cascade utilization respectively, has improved the methane power generating system calorific value and has recycled efficient.
Description of drawings
Fig. 1 is that mud classification phase-splitting anaerobic digestion and the marsh gas power generation unit residual heat integrative that the embodiment of the utility model provides utilizes system process figure;
Fig. 2 is that the marsh gas power generation unit residual heat integrative that the embodiment of the utility model provides utilizes the system works schematic diagram.
Embodiment
Further specify below in conjunction with the technical scheme of accompanying drawing the utility model:
Fig. 1 utilizes and mud classification phase-splitting anaerobic digestion techniques integrated system process flow sheet for marsh gas power generation unit residual heat integrative.This system comprises preheating pond 1, heating bath 2, high-temperature hydrolysis pond 3, anaeration in normal temperature digester 4, marsh gas power generation unit 5, smoke and waste steam boiler 6, thermal equilibrium water pot 7, softening water tank equipment 8, mud mud interchanger, muddy water interchanger and water water-to-water heat exchanger equipment; The cold cycle water coolant of marsh gas power generation unit 5 reclaims the low-temperature circulating water calorific value by softening water tank equipment 8, and preheats for the mud in preheating pond 1 through the muddy water interchanger low-temperature circulating water; The high temperature jacket water reclaims the high-temperature water calorific value by thermal equilibrium water pot 7; And high-temperature water heats and be incubated, gives 4 insulations of anaeration in normal temperature digester for high-temperature hydrolysis pond 3 through the water water-to-water heat exchanger and be smoke and waste steam boiler 6 supplementary feed; Smoke and waste steam boiler 6 reclaims the flue gas calorific value of marsh gas power generation unit 5, and the steam of generation is directly given the mud heating of heating bath 2; The sludge calorific value of high-temperature hydrolysis pond 3 to anaeration in normal temperature digester 4 reclaims through mud mud interchanger; Reclaiming calorific value preheats for the mud in preheating pond 1; The treated laggard biogas generator group 5 of biogas that high-temperature hydrolysis pond 3, anaeration in normal temperature digester 4 produce; The waste heat of differing temps carries out cascade utilization respectively in the marsh gas power generation process, and 5 generatings of marsh gas power generation unit can directly utilize, and methane power generating system calorific value recovery utilization rate is greater than more than 83%.
Fig. 2 utilizes the system works schematic diagram for marsh gas power generation unit residual heat integrative.
The cold cycle water coolant of marsh gas power generation unit 5 mainly cools off the charge air cooler of unit, and leaving water temperature(LWT) is not higher than 55 ℃, through muddy water interchanger recovery waste heat, preheats for the mud in preheating pond 1; The high temperature jacket water of marsh gas power generation unit 5 mainly cools off the parts such as oil cooler, body and cylinder cap of unit; Leaving water temperature(LWT) generally is not higher than 85 ℃; Through water water-to-water heat exchanger recovery waste heat, heat and be incubated for high-temperature hydrolysis pond 3, give the anaeration in normal temperature digester 4 insulations; The fume afterheat of marsh gas power generation unit 5, flue-gas temperature reclaim calorific value through smoke and waste steam boiler 6 about 550 ℃, produce the mud heating that steam is given preheating pond 1.
The utility model can be used for the municipal sewage plant and generates the stable of mud, and the minimizing follow-up for mud provides the basis with recycling treatment, realizes distributing rationally of electricity, heat, ability simultaneously.Can also be used for other sewage works except that municipal wastewater treatment plant.
Embodiment one:
Scale is for being 100; The municipal sewage plant of 000t/d; Produce the about 75t/d of mud of water ratio 80%, system's operation in winter, pretreatment pool moisture percentage in sewage sludge 92%; 15 ℃ of mud mud temperature, sludge high temperature (about 50 ℃) hydrolysis, middle temperature (35 ℃) anaerobic digester system institute heat requirement are 2.554 * 10
5Kcal, high temperature, anaeration in normal temperature Digestive tract produce biogas 3120m3/d, can supply the power unit operation of 300kw, electrogenesis 260kw.Consider marsh gas power generation unit flue gas waste heat recovery utilising efficiency 70%, cold cycle water coolant and high temperature jacket water are recycled efficient 80%, marsh gas power generation unit waste heat recyclable 2.654 * 10
5Kcal; System's operation in summer, pretreatment pool moisture percentage in sewage sludge 92%, 25 ℃ of mud mud temperature, sludge high temperature (about 50 ℃) hydrolysis, middle temperature (35 ℃) anaerobic digester system institute heat requirement are 1.547 * 10
5Kcal, marsh gas power generation unit waste heat recyclable 2.654 * 10
5Kcal; Can find out that by above-mentioned data in summer, the heat that marsh gas power generation unit residual neat recovering system produces can satisfy high temperature far away, anaeration in normal temperature digests needed heat; In winter, the heat that marsh gas power generation unit residual neat recovering system produces can satisfy high temperature basically, anaeration in normal temperature digests needed heat, the taking into account system operation stability, and system can set up a methane boiler.
Existing data shows; Municipal sewage plant's power consumption accounts for total energy consumption 60-90%; Biological sewage treatment electric energy energy consumption (being mainly used in the aeration oxygen supply) accounts for the 50-70% of total power consumption, and the sludge treatment power consumption accounts for the 10-25% of total power consumption, and is visible that the residual heat integrative utilization of marsh gas power generation unit and high temperature, middle temperature anaerobic sludge digestion technology is integrated; Not only can realize sewage work's internal water, heat, can distribute rationally, can realize that more sewage work is significantly energy-saving and cost-reducing.Utilization mud classification phase-splitting anaerobic digestion techniques; Biogas output improves 35% than anaeration in normal temperature digestion, and the biogas that system produces can generate electricity, and accounts for greatly about 35%; Main three parts of generator waste heat: high temperature jacket water, cold cycle water coolant, fume afterheat account for 56% greatly.High temperature jacket water, cold cycle water coolant produce 80 ℃, 50 ℃ hot water through stablizing after the heat exchange of water water-to-water heat exchanger, and fume afterheat can produce steam or hot water through waste heat boiler.Mud classification phase-splitting anaerobic digestion techniques and marsh gas power generation unit residual heat integrative utilize the development of technology, based on sludge stabilizing, the resource utilization of energy-optimised configuration technological possibility are provided for realizing sewage work.
The utlity model has following advantage and high-lighting effect: 1) mud classification phase-splitting anaerobic digestion techniques and marsh gas power generation unit residual heat integrative utilization technology are combined; The waste heat of differing temps carries out cascade utilization respectively in the marsh gas power generation process; Reclaim the thermal source of calorific value as classification phase-splitting anaerobic digestion; Energy obtains fully and reasonable use, the new integrated technology that formed sludge treating system electricity, heat, can fully utilize.2) mud mud interchanger.High-temperature hydrolysis pond mud to anaeration in normal temperature digester sludge calorific value reclaims through mud mud interchanger, makes full use of system's calorific value; 3) save energy.The heat energy of mud classification phase-splitting anaerobic digestion is from the waste heat of marsh gas power generation unit, and classification phase-splitting anaerobic digester system produces biogas, and biogas drives power unit, and marsh gas power generation unit waste heat is used for high temperature, the required heat energy of warm anaerobic sludge digestion.Compare energy-conservation mass energy with fuel boiler.4) free from environmental pollution.Use the thermal source of marsh gas power generation unit waste heat, avoided the topsoil of using conventional boiler to cause as sludge high temperature, anaeration in normal temperature digestion.5) thermal source to differing temps carries out cascade utilization respectively, has improved the methane power generating system calorific value and has recycled efficient.
The above; Be merely the preferable embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claim.
Claims (1)
1. mud classification phase-splitting anaerobic digestion and marsh gas power generation unit residual heat integrative utilize system; It is characterized in that; This system comprises preheating pond, heating bath, high-temperature hydrolysis pond, anaeration in normal temperature digester, marsh gas power generation unit, smoke and waste steam boiler, thermal equilibrium water pot, softening water tank equipment, mud mud interchanger, muddy water interchanger and water water-to-water heat exchanger equipment; Said preheating pond is connected with said softening water tank equipment; Said softening water tank equipment is connected with said marsh gas power generation unit, and said marsh gas power generation unit is connected with said thermal equilibrium water pot, and said thermal equilibrium water pot is connected with said anaeration in normal temperature digester with said high-temperature hydrolysis pond; Said high-temperature hydrolysis pond is connected with said marsh gas power generation unit, said heating bath and said anaeration in normal temperature digester respectively; Said anaeration in normal temperature digester is connected with said marsh gas power generation unit, and said marsh gas power generation unit is connected with said smoke and waste steam boiler, and said smoke and waste steam boiler is connected with said heating bath.
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| CN2011204667798U CN202508961U (en) | 2011-11-22 | 2011-11-22 | Comprehensive utilization system of sludge classification split-phase anaerobic digestion and waste heat of marsh gas power generating set |
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| CN2011204667798U CN202508961U (en) | 2011-11-22 | 2011-11-22 | Comprehensive utilization system of sludge classification split-phase anaerobic digestion and waste heat of marsh gas power generating set |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936566A (en) * | 2012-11-16 | 2013-02-20 | 蔡志武 | Energy using device and method for biogas production and power generation system |
| CN103352815A (en) * | 2013-02-26 | 2013-10-16 | 芦万里 | Innovative power output principle |
| CN103708613A (en) * | 2013-12-20 | 2014-04-09 | 中国联合工程公司 | System and method for recycling toilet flushing sewage energy through industrial circulating water afterheat |
| CN104251484A (en) * | 2014-09-03 | 2014-12-31 | 广州市净水有限公司 | Efficient energy compensating and using integrated system for sludge marsh gas generating set and steam boiler |
| CN105331523A (en) * | 2015-12-02 | 2016-02-17 | 青岛天人环境股份有限公司 | Fast-assembly modularized waste heat utilization device for biogas projects and method thereof |
| CN110642491A (en) * | 2019-10-12 | 2020-01-03 | 江苏泓润生物质能科技有限公司 | Waste heat recovery method for hot water coil of anaerobic tank system |
| CN110665945A (en) * | 2019-10-12 | 2020-01-10 | 江苏泓润生物质能科技有限公司 | Waste heat recovery and recycling method used in organic waste treatment process |
-
2011
- 2011-11-22 CN CN2011204667798U patent/CN202508961U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936566A (en) * | 2012-11-16 | 2013-02-20 | 蔡志武 | Energy using device and method for biogas production and power generation system |
| CN103352815A (en) * | 2013-02-26 | 2013-10-16 | 芦万里 | Innovative power output principle |
| CN103708613A (en) * | 2013-12-20 | 2014-04-09 | 中国联合工程公司 | System and method for recycling toilet flushing sewage energy through industrial circulating water afterheat |
| CN103708613B (en) * | 2013-12-20 | 2015-06-10 | 中国联合工程公司 | System and method for recycling toilet flushing sewage energy through industrial circulating water afterheat |
| CN104251484A (en) * | 2014-09-03 | 2014-12-31 | 广州市净水有限公司 | Efficient energy compensating and using integrated system for sludge marsh gas generating set and steam boiler |
| CN104251484B (en) * | 2014-09-03 | 2016-01-06 | 广州市净水有限公司 | Sludge methane generating set-steam boiler energy efficient compensates and utilizes integral system |
| CN105331523A (en) * | 2015-12-02 | 2016-02-17 | 青岛天人环境股份有限公司 | Fast-assembly modularized waste heat utilization device for biogas projects and method thereof |
| CN110642491A (en) * | 2019-10-12 | 2020-01-03 | 江苏泓润生物质能科技有限公司 | Waste heat recovery method for hot water coil of anaerobic tank system |
| CN110665945A (en) * | 2019-10-12 | 2020-01-10 | 江苏泓润生物质能科技有限公司 | Waste heat recovery and recycling method used in organic waste treatment process |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHONGCHI WATER CO., LTD. Free format text: FORMER OWNER: BEIJING ZHONGCHI GREEN ENERGY ENVIRONMENTAL TECHNOLOGY CO., LTD. Effective date: 20141224 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141224 Address after: No. 66 Dongsheng Technology Park in Beijing City, Haidian District road 100192 west mouth (Northern Territory) D District No. 2 Building 4 layer Patentee after: CSD WATER SERVICE CO., LTD. Address before: 100192 Beijing, Haidian District West Road, No. 66, D District, building 2, room 4, room 409 Patentee before: Beijing Zhongchi Green Energy Environmental Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20201122 |