CN110542105A - Comprehensive utilization system for waste water and waste gas - Google Patents
Comprehensive utilization system for waste water and waste gas Download PDFInfo
- Publication number
- CN110542105A CN110542105A CN201810526928.1A CN201810526928A CN110542105A CN 110542105 A CN110542105 A CN 110542105A CN 201810526928 A CN201810526928 A CN 201810526928A CN 110542105 A CN110542105 A CN 110542105A
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- CN
- China
- Prior art keywords
- waste
- waste water
- gas
- waste gas
- water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
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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
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
- F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
- F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2207/00—Control
- F23G2207/40—Supplementary heat supply
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention relates to a comprehensive utilization system of waste water and waste gas and an operation method thereof. The methane in the system heald is generated by the waste water in the methane tank; the VOC waste gas combustion system is formed by mixing biogas, waste gas and natural gas and then combusting the mixture in a boiler nozzle combustor; the waste water heating system consists of a waste water pump, a waste water heater and a steam heater; the condensate recovery system is guided into the soft water supplement system by the steam condensate drain valve, and the soft water is preheated by the soft water preheater and then is sent into the boiler. The system is suitable for pharmaceutical enterprises, fine chemical enterprises and other enterprises which generate a large amount of VOC waste gas and have heat supply requirements. The system utilizes the biogas resource in the wastewater to burn VOC waste gas, reduces the natural gas consumption of the incineration boiler, and meanwhile, the system produces steam as a byproduct and fully recovers the waste heat of the system. The system fully utilizes waste resources, and has the advantages of low operation cost, obvious energy-saving effect and high comprehensive cost performance.
Description
Technical Field
The invention belongs to the technical field of energy conservation and environmental protection, and particularly relates to a comprehensive utilization system for producing biogas by using organic wastewater, burning VOC waste gas and recycling heat.
Technical Field
At present, organic wastewater and VOC waste gas are treated into various systems, wherein the treatment method of the organic wastewater mainly comprises a physical pretreatment method, an extraction separation method, an oxidation adsorption method, a concentration method and an ultrasonic degradation method; the method for treating VOC waste gas mainly comprises the following steps: active carbon adsorption method, induced air high-altitude discharge method, combustion processing method, absorption degassing method, condensation collection method and biological processing method. Most of the waste water or waste gas treatment adopts an independent treatment method, either the energy consumption is high or the material consumption is high, the adopted treatment device is relatively complex, the aerobic biological method is adopted for treatment, the engineering investment and the operating cost are very high, and a certain amount of waste water and waste gas can generate certain pollution to the atmospheric environment after being treated by the process device. The system provides a wastewater anaerobic biological method, which has the advantages of high organic wastewater treatment load, low operating cost, capability of recovering energy from generated methane gas, comprehensive treatment of VOC waste gas generated in enterprise production and comprehensive energy-saving system for recovering heat energy.
Disclosure of Invention
Based on the above, aiming at the prior art, the technical problem to be solved by the invention is to provide an energy-saving recovery system for comprehensively utilizing waste water and waste gas, which utilizes the methane resource in the waste water to burn the VOC waste gas, reduces the natural gas consumption of an incineration boiler, and meanwhile, the system produces steam as a byproduct and fully recovers the waste heat of the system. The system makes full use of waste resources, and has the advantages of high waste resource utilization rate, low operation cost, obvious energy-saving effect and high comprehensive cost performance.
In order to achieve the purpose, the technical scheme of the invention is as follows:
A comprehensive utilization system for waste water and waste gas comprises a waste water methane production system, a VOC waste gas combustion system, a waste water heating system and a condensed water heating and recycling system. The biogas in the system is generated by the biogas digester wastewater in the wastewater biogas generation system; the VOC waste gas combustion system is formed by a device which is used for mixing methane, waste gas and natural gas and then combusting the mixture in a nozzle combustor of a boiler; the waste water heating system consists of a waste water pump, a waste water heater and a steam heater; the condensed water heating and recovering system is a soft water supplementing system guided by a steam condensed water drain valve, and soft water is preheated by a soft water preheater and then is sent into a boiler.
In one embodiment, the waste water production biogas system comprises a waste water biogas digester, a waste water pump, a waste water preheater and a steam heater. The methane is generated by the anaerobic reaction of the waste water in the methane tank, and other devices are waste water heating systems.
in one embodiment, the VOC exhaust gas combustion system is comprised of a VOC exhaust gas pipeline, a biogas pipeline, a natural gas pipeline, and corresponding pipeline gas and air and boiler combustion nozzles. After being fully mixed, a plurality of gas flows are combusted at a combustion nozzle of the boiler to provide heat and byproduct steam for the boiler.
In one embodiment, in the wastewater heating system, after the pressure of wastewater in the methane tank is raised by the wastewater pump, the waste heat of boiler flue gas is recovered by the wastewater preheater of the wastewater preheater, and then the wastewater is further heated by the steam heater to raise the temperature of the wastewater.
In one embodiment, the condensed water heating recovery system recovers condensed water to a soft water pipeline through a steam condensed water trap and then recovers the waste heat of the boiler flue gas through a soft water preheater.
compared with the prior art, the comprehensive utilization system for waste water and waste gas has the beneficial technical effects that the methane in the waste water is recovered, the waste gas is reduced from being diffused into the atmosphere, the VOC waste gas is fully mixed with the methane and the natural gas and is combusted in the VOC waste gas incineration boiler, the VOC waste gas is eliminated, the methane resource is utilized, the consumption of the natural gas when the VOC waste gas is incinerated by the natural gas alone is reduced, and finally the steam is generated as a byproduct by the combustion heat of the boiler. The system is suitable for pharmaceutical enterprises, fine chemical enterprises, enterprises which generate a large amount of VOC waste gas and enterprises which have heat supply requirements and the like. The system recycles waste resources, so that the waste resource utilization rate is high, the operation cost is low, the energy-saving effect is obvious, and the comprehensive cost performance is high.
Drawings
FIG. 1-1 is a schematic view of a waste water and waste gas comprehensive utilization system according to the present invention; FIG. 2-1 is a schematic view of a boiler combustion nozzle.
FIG. 1-1 mainly comprises 1, a waste water pump; 2. a biogas generating pit; 3. a boiler; 3-1, a boiler combustion nozzle; 4. a steam heater; 5. a soft water preheater; 6. a waste water preheater; 7-1, a methane pressure reducing valve; 7-2, VOC waste gas valve; 7-3, a natural gas pressure reducing valve; 8. a steam main valve; 8-1, a steam preheating valve; 8-2, a steam output valve; 8-3, a steam condensate drain valve; 9 soft water replenishing valve.
Wherein, the figure 2-1 mainly comprises a biogas inlet 301 and a biogas outlet; 302. a natural gas inlet; 303. a waste gas and natural gas mixing pipeline; 304. a mixing chamber for mixing fuel gas and air; 305. a gas homogenizing nozzle; 306. a VOC waste gas inlet; 307. an air inlet; 308. and a gas high-speed mixing section.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.
The comprehensive utilization system for waste water and waste gas mainly comprises the following steps:
1. The organic waste water generates methane in the methane tank, and the methane generating efficiency can be improved at the optimal temperature of 35-45 ℃.
2. Burning the organic VOC waste gas, the methane and the air in a boiler combustion nozzle (see figure 2-1), and only opening a 7-1 methane pressure reducing valve and a 7-2VOC waste gas valve when the concentration of methane in the methane is higher; when the concentration of methane in the biogas is low, a 7-3 natural gas pressure reducing valve is required to be opened.
3, using a byproduct steam of the VOC waste gas incineration boiler, wherein one part of the byproduct steam is supplied to a steam heater through an 8-1 steam preheating valve to increase the temperature of sewage, and the other part of the byproduct steam is supplied to a production process through an 8-2 steam outward-conveying valve; in summer or when the temperature of the waste water in the methane tank is higher, the 8-1 steam preheating valve can be closed, so that the steam consumption of the system is reduced.
4. The waste water in the methane tank is kept at a certain temperature to improve the methane generation efficiency, the methane tank needs to supplement certain heat, the whole methane tank waste water heating system consists of the methane tank, a sewage preheater and a steam heater, part of the heat is supplemented by the waste heat of the flue gas, and the steam heater supplements the waste water when the heat is insufficient.
5. The steam condensate in the steam heater is totally recycled to the soft water system through the 8-3 steam condensate drain valve, so that the use amount of part of soft water can be reduced, and the waste heat of the 60 ℃ steam condensate can be recycled.
And 6, the VOC waste gas incineration boiler is internally provided with a high-temperature heat storage ceramic material, so that the consumption of natural gas can be reduced, the exhaust temperature of boiler flue gas can be reduced, and the exhaust temperature of the flue gas can be further reduced to 90 ℃ by recycling heat of the boiler flue gas through the soft water preheater and the waste water preheater.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art of energy saving and environmental protection, without departing from the spirit of the invention, several simple deductions or substitutions can be made, which shall be considered as falling within the protection scope of the invention.
Claims (4)
1. A comprehensive utilization system for waste water and waste gas mainly comprises waste water cyclic heating, biogas production through waste water biological anaerobic fermentation, VOC waste gas combustion, steam byproduct of an incineration boiler and flue gas waste heat recovery of the incineration boiler.
2. A comprehensive utilization system for waste water and waste gas is characterized in that the pressure of waste water is raised to 0.3MPa by a waste water pump, and the waste water is heated by a waste water preheater and a steam heater in sequence to raise the temperature of the waste water to 35-45 ℃.
3. A comprehensive utilization system for waste water and waste gas is characterized in that biogas, VOC waste gas of users and a small amount of natural gas are fully mixed in an incineration boiler through a combustion nozzle (shown in figure 2) and then are combusted.
4. A comprehensive utilization system for waste water and waste gas is characterized in that waste heat flue gas generated by a boiler is used for preheating steam condensate and soft water; then the waste heat of the flue gas further heats the circulating wastewater, the waste heat of the flue gas is recovered, and the temperature of the discharged flue gas is reduced to below 90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810526928.1A CN110542105A (en) | 2018-05-29 | 2018-05-29 | Comprehensive utilization system for waste water and waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810526928.1A CN110542105A (en) | 2018-05-29 | 2018-05-29 | Comprehensive utilization system for waste water and waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110542105A true CN110542105A (en) | 2019-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810526928.1A Withdrawn CN110542105A (en) | 2018-05-29 | 2018-05-29 | Comprehensive utilization system for waste water and waste gas |
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| Country | Link |
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| CN (1) | CN110542105A (en) |
Citations (11)
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|---|---|---|---|---|
| CN101062825A (en) * | 2007-04-19 | 2007-10-31 | 浙江大学 | Rubbish comprehensive processing method adapted for village and small town |
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| CN102517107A (en) * | 2011-12-08 | 2012-06-27 | 华北电力大学 | Technological method for producing biogas by utilization of organic matter |
| CN102698593A (en) * | 2012-05-28 | 2012-10-03 | 福州尊龙生物养殖技术有限公司 | Purification system and system for producing fermentation waste gas by organic fertilizer |
| CN103396815A (en) * | 2013-08-05 | 2013-11-20 | 中国科学院城市环境研究所 | Method for preparing carbon materials by use of sludge |
| CN103776039A (en) * | 2012-10-19 | 2014-05-07 | 江苏兄弟维生素有限公司 | Organic synthesis waste gas treatment method in pharmaceutical process |
| CN204345667U (en) * | 2014-12-19 | 2015-05-20 | 山东华源锅炉有限公司 | High temperature in wastewater innoxious burning boiler |
| CN105462620A (en) * | 2015-12-19 | 2016-04-06 | 榆林学院 | Pulverized coal-biogas residue co-gasification and synthesis gas preparing system |
| CN105983567A (en) * | 2015-04-15 | 2016-10-05 | 新疆森阳环保科技有限公司 | Resourceful cyclic utilization technology for household and building rubbish |
| CN106984632A (en) * | 2017-04-28 | 2017-07-28 | 浙江华庆元生物科技有限公司 | A kind of organic garbage treatment technique |
| CN206872620U (en) * | 2017-05-24 | 2018-01-12 | 山东绿之缘环境工程设计院有限公司 | A kind of integrated sewage treatment recycling device |
-
2018
- 2018-05-29 CN CN201810526928.1A patent/CN110542105A/en not_active Withdrawn
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062825A (en) * | 2007-04-19 | 2007-10-31 | 浙江大学 | Rubbish comprehensive processing method adapted for village and small town |
| CN102307817A (en) * | 2008-09-18 | 2012-01-04 | 尼奥齐姆国际有限公司 | Anaerobic process for treating organic material to generate biogas |
| CN102517107A (en) * | 2011-12-08 | 2012-06-27 | 华北电力大学 | Technological method for producing biogas by utilization of organic matter |
| CN102698593A (en) * | 2012-05-28 | 2012-10-03 | 福州尊龙生物养殖技术有限公司 | Purification system and system for producing fermentation waste gas by organic fertilizer |
| CN103776039A (en) * | 2012-10-19 | 2014-05-07 | 江苏兄弟维生素有限公司 | Organic synthesis waste gas treatment method in pharmaceutical process |
| CN103396815A (en) * | 2013-08-05 | 2013-11-20 | 中国科学院城市环境研究所 | Method for preparing carbon materials by use of sludge |
| CN204345667U (en) * | 2014-12-19 | 2015-05-20 | 山东华源锅炉有限公司 | High temperature in wastewater innoxious burning boiler |
| CN105983567A (en) * | 2015-04-15 | 2016-10-05 | 新疆森阳环保科技有限公司 | Resourceful cyclic utilization technology for household and building rubbish |
| CN105462620A (en) * | 2015-12-19 | 2016-04-06 | 榆林学院 | Pulverized coal-biogas residue co-gasification and synthesis gas preparing system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191206 |