CN101225963A - Method for recovering and reusing multifunctional waste gas and waste water - Google Patents
Method for recovering and reusing multifunctional waste gas and waste water Download PDFInfo
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- CN101225963A CN101225963A CNA2007100076388A CN200710007638A CN101225963A CN 101225963 A CN101225963 A CN 101225963A CN A2007100076388 A CNA2007100076388 A CN A2007100076388A CN 200710007638 A CN200710007638 A CN 200710007638A CN 101225963 A CN101225963 A CN 101225963A
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Abstract
The invention provides a multifunctional waste gas and wastewater recovery and recycling method, in particular to a multifunctional waste gas and wastewater recovery and recycling method in the biodiesel production craft which takes waste oil and grease as material. The recovery and recycling method is characterized in that: the method not only can recycle and process the cacodorous pyrolysis gas such as low boiling point and short chain ester and alkane that is discharged to the environment in the traditional manufacturing technique, and then which is delivered to a boiler for being burnt fully, and the emission gas is in line with the state environmental protection standards; simultaneously, the cacodorous operating water in the traditional manufacturing technique can be processed and arranged into a pump chamber again for recycling, rather than discharged into the environment, thereby the multifunctional waste gas and wastewater recovery and recycling method has the advantages that: nearly 100-ton water can be saved everyday and the environmental pollution can be prevented.
Description
Affiliated technical field
The present invention relates to a kind of multi-functional waste gas waste water recycling method, particularly a kind of is that raw material is produced the multi-functional waste gas waste water recycling method in the biodiesel processes with the waste animal vegetable oil.
Background technology
In recent years, biodiesel develops very fast at home.Be the raw material esterification must be obtained thick methyl esters in the raw material production biodiesel processes with the waste animal vegetable oil, further, obtain biodiesel behind the incomplete aliphatic acid triglyceride of sterol, cured matter, phosphide, albumen and esterification that removal waste animal vegetable oil raw material brings through decompression, rectification and purification.So rectification under vacuum is to be important procedure in the raw material production biodiesel process with the waste animal vegetable oil.Usually will occur low boiling, short carbon chain ester in the traditional processing technology, alkane etc. add at high temperature to be pined for producing " cracking gas " with stench and will discharge; To produce per hour 6-7 ton simultaneously, want " working water " discharging of more than 100 ton every day with stench.These waste gas, waste water can produce serious pollution to environment, simultaneously to the healthy generation of people harmful effect.
Summary of the invention
The objective of the invention is to be to provide a kind of multi-functional waste gas waste water recycling method, particularly a kind of is that raw material is produced the multi-functional waste gas waste water recycling method in the biodiesel processes with the waste animal vegetable oil.Using this method can be with low boiling, the short carbon chain ester that usually will occur in the traditional processing technology, and alkane etc. add " cracking gas " with stench pining for producing at high temperature will discharge serious environment pollution.The present invention can fully be burnt this for exhaust gas discharged reclaims and deliver to after treatment to act as a fuel in the boiler, keeps the gas of discharging to meet national environmental standard; " working water " that occurs having stench in the traditional processing technology can also be reentered pump chamber after treatment and recycle, need not to be discharged in the environment, can save the water resource of hundreds of ton every day, prevented the pollution to environment again.
Technical scheme
Main points of the present invention are to relate to a kind of multi-functional waste gas waste water recycling method, and this method contains the recovery of a high temperature combustible exhaust gas body, processing, combustion system at least; " working water " circulatory system and a fatty acid methyl ester (biodiesel) be recovery system again.
The recovery of high temperature combustible exhaust gas body, processing, combustion system are exactly that the high temperature combustible exhaust gas that will produce in the distillation process is pumped into a seal against exhaust gas waste water recycling can, in jar, after supercooling, neutralization, foam removal are handled, send into heating boiler and be used as the fuel degasification of fully burning, not only saved fuel but also reduced pollution.
" working water " circulatory system is exactly " working water " with stench that water ring pump and Roots's unit are discharged to be cooled off in waste gas waste water recycling can, pumped into unit again after the neutralisation treatment and recycle, need not to be discharged in the environment, not only saved water but also prevented pollution environment.
Fatty acid methyl ester (biodiesel) again recovery system be exactly be dissolved in that a small amount of low carbon organic acid in the above-mentioned waste gas waste water and low-carbon (LC) methyl esters etc. circulate in the cooling in waste gas waste water recycling can and alkali treatment after the fatty acid methyl ester (biodiesel) that produces reclaim again.
The invention has the advantages that:
1, can add to pine for producing at high temperature and will discharge " cracking gas " with stench and reclaim and deliver to after treatment to act as a fuel in the boiler and fully burn usually occurring low boiling, short carbon chain ester, alkane etc. in the traditional processing technology, keep the gas of discharging to meet national environmental standard.
2, " working water " that occurs having stench in the traditional processing technology can be reentered pump chamber after treatment and recycle, need not to be discharged in the environment, can save the water resource of hundreds of ton every day, prevented the pollution to environment again.
3, fatty acid methyl ester (biodiesel) again recovery system be exactly be dissolved in that a small amount of low carbon organic acid in the above-mentioned waste gas waste water and low-carbon (LC) methyl esters etc. circulate in the cooling in jar and alkali treatment after the fatty acid methyl ester (biodiesel) that produces reclaim again.
The specific embodiment
Below by example the present invention is further described:
A kind of multi-functional waste gas waste water recycling method, being particularly related to a kind of is that raw material is produced the multi-functional waste gas waste water recycling method in the biodiesel processes with the waste animal vegetable oil, contains the recovery of a high temperature combustible exhaust gas body, processing, combustion system at least; " working water " circulatory system and a fatty acid methyl ester (biodiesel) be recovery system again.
This method is the waste gas waste water recycling can that " cracking gas " that low boiling that rectifying column in the production technology is produced, short carbon chain ester, alkane etc. have a stench pumps into a sealing, in jar cooling tube is installed, cooling tube is that seamless steel pipe bends and forms, make disc type and Lie Shi shape, heat exchange area reaches 10-25M
2Tank skin is provided with cooling water outlet and inlet, and cooling water inlet connects deep well water pump, in order to pump into cooling water; Combustible exhaust gas in jar through cooling after be connected outlet on the tower baffle plate demister, after tower baffle plate demister is eliminated the globule, pump into the heat conducting oil boiler processing of burning through the pressure-vaccum dual-purpose pump.
" working water " with stench that water ring pump and Roots's unit are discharged pumps into the waste gas waste water recycling can of sealing simultaneously, in jar cooling again by in the alkali and feeder with regular adding small amount of N aOH solution, low carbon organic acid and low-carbon (LC) methyl esters are eliminated in neutralization; " working water " after the neutralisation treatment pumps into unit again and recycles, and need not to be discharged in the environment.
In jar, a small amount of low carbon organic acid that contains in the waste gas waste water and low-carbon (LC) methyl esters etc. are circulated in the cooling in jar and the NaOH neutralisation treatment after the fatty acid methyl ester (biodiesel) that produces can reclaim again by oil sump.
Through actual measurement, the annual combustible exhaust gas that reclaims of production line of producing 25000 tons per year is used as heat conducting oil boiler fuel, is equivalent to save 150 tons/year of fuel oils.Simultaneously can be with more than 6500 tons/years " working water " as accomplish to exempt from discharging in circulation with stench, be equivalent to save the water resource that can save more than 6500 ton/year.Not only the resource of Jie Yueing has also been optimized environment.
Claims (8)
1. multi-functional waste gas waste water recycling method, particularly a kind of is that raw material is produced the multi-functional waste gas waste water recycling method in the biodiesel processes with the waste animal vegetable oil; At least contain the recovery of a high temperature combustible exhaust gas body, processing, combustion system; " working water " circulatory system and a fatty acid methyl ester (biodiesel) be recovery system again.
2. a kind of multi-functional waste gas waste water recycling method as claimed in claim 1, it is characterized in that the recovery of a high temperature combustible exhaust gas body, processing, combustion system are low boiling, the short carbon chain esters that rectifying column is produced, alkane etc. have the waste gas waste water recycling can that stench " cracking gas " pumps into a sealing, in jar cooling tube is installed, cooling tube is that seamless steel pipe bends and forms, make disc type and Lie Shi shape, pipe is interior to be cooling water with phreatic water; Combustible exhaust gas in jar through cooling after be connected outlet on the tower baffle plate demister, after tower baffle plate demister is eliminated the globule, pump into the processing of burning of heat conduction boiler through the pressure-vaccum dual-purpose pump.
3. a kind of multi-functional waste gas waste water recycling method as claimed in claim 2 is characterized in that waste gas waste water recycling can be that stainless steel or carbon steel are made, and its big I determines according to production capacity.
4. a kind of multi-functional waste gas waste water recycling method as claimed in claim 2 is characterized in that cooling water can be phreatic water or other water at low temperature.
5. a kind of multi-functional waste gas waste water recycling method as claimed in claim 2 is characterized in that the pressure-vaccum dual-purpose pump pumps into fuel gas in the pipeline of heat conducting oil boiler burner hearth to be provided with the fire insulation grid, is used to prevent tempering.
6. a kind of multi-functional waste gas waste water recycling method as claimed in claim 1, it is characterized in that " working water " circulatory system is meant that " working water " with water ring pump and the discharge of Roots's unit pumps into the waste gas waste water recycling can of sealing, in jar after the cooling again by in the alkali and feeder with regular adding small amount of N aOH solution, neutralization is eliminated and again " working water " is pumped into unit after low carbon organic acid and low-carbon (LC) methyl esters are handled and recycle.
7. a kind of multi-functional waste gas waste water recycling method as claimed in claim 6 is characterized in that in the alkali and can be NaOH solution, also can be other alkaline matter.
8. require 1 described a kind of multi-functional waste gas waste water recycling method, it is characterized in that waste animal vegetable oil is that raw material is meant various animal oil, useless animal fat; Each vegetable oil, waste vegetable oil fat; Industrial methanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100076388A CN101225963B (en) | 2007-01-19 | 2007-01-19 | Method for recovering and reusing multifunctional waste gas and waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100076388A CN101225963B (en) | 2007-01-19 | 2007-01-19 | Method for recovering and reusing multifunctional waste gas and waste water |
Publications (2)
| Publication Number | Publication Date |
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| CN101225963A true CN101225963A (en) | 2008-07-23 |
| CN101225963B CN101225963B (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100076388A Expired - Fee Related CN101225963B (en) | 2007-01-19 | 2007-01-19 | Method for recovering and reusing multifunctional waste gas and waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531258A (en) * | 2010-10-07 | 2012-07-04 | 林德股份公司 | Method for waste lye oxidation under increased pressure |
| CN109370782A (en) * | 2018-11-30 | 2019-02-22 | 德州市荣光生物科技有限公司 | Gutter oil working process heat energy recycling device |
-
2007
- 2007-01-19 CN CN2007100076388A patent/CN101225963B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531258A (en) * | 2010-10-07 | 2012-07-04 | 林德股份公司 | Method for waste lye oxidation under increased pressure |
| CN109370782A (en) * | 2018-11-30 | 2019-02-22 | 德州市荣光生物科技有限公司 | Gutter oil working process heat energy recycling device |
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| Publication number | Publication date |
|---|---|
| CN101225963B (en) | 2011-05-18 |
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