CN101974350A - Technological process for producing biomass fuel gas without wastewater discharge by using phenol water gasification and recovery technology - Google Patents
Technological process for producing biomass fuel gas without wastewater discharge by using phenol water gasification and recovery technology Download PDFInfo
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Abstract
The invention provides a technological process for producing a biomass fuel gas without wastewater discharge by using phenol water gasification and recovery technology. The process is characterized in that the phenol water heated to 60 to 65 DEG C by the biomass fuel gas is completely fed into a gasification furnace for reaction by a mechanical mode of centrifugal sputtering of a high-speed centrifuge under the entertainment action of hot air heated to 80 to 90 DEG C by the biomass fuel gas, so that the phenol water which is originally harmful to environment and difficult to treat is converted into valuable fuel gas, the heat value of the biomass fuel gas and the gasification efficiency of the gasification furnace are improved, and the cost of enterprises for treating the phenol water is greatly reduced. The technological method has the advantages of simplicity, reasonableness, low treatment cost, energy conservation and environmental friendliness and overcomes the defect that phenol substances with high boiling points need to be eliminated by human power in the conventional process, so that zero discharge of the phenol water is truly realized, and the problems of phenol water pollution and secondary pollution are not caused. The technological method for treating the phenol-containing waste water is organic combination of waste heat recovery, waste water cyclic utilization and phenol-containing sewage treatment, so that the energy conservation and the discharge reduction of a fuel gas station are effectively realized.
Description
Technical field
The present invention relates to a kind of improvement method of phenolic wastewater, particularly use the processing method that phenol aqueous vapor reuse technology is realized biological fuel gas production non-wastewater discharge.
Background technology
Gasifying biomass is that present biomass energy is most widely used and proven technique, and fixed-bed gasification furnace is current by the coal gas generation equipment of widespread usage.Cold clean biological fuel gas is the overall trend of gas station development.The combustion gas of hot coarse biometric matter can produce a large amount of phenolic wastewater through indirect cool tower the time, the combustion gas output of gas station is big more, and the amount of the useless phenol water that condensation produces is also big more.Phenolic wastewater is made up of phenols, sulfide, prussiate etc., and wherein phenols is based on monohydric phenol, and is the highest with phenol content, p-cresol between secondly also having.Phenolic compound is a kind of prototype matter poisonous substance, and all life individualities are all had toxic action.Therefore, not treated permission of phenolic wastewater discharged, and must reach national specified discharge standard can efflux, but in this way, company investment cost can significantly increase.
In recent years, how thoroughly to administer phenolic wastewater is the environmental protection difficult problem of puzzlement gas station always, the expert who is engaged in the industrial combustion gas design studies carried out secular research and discovery, to tens kinds of phenol water tackling methods such as steam chemistry dephenolize method, steam dephenolize method, burning method, solvent extraction dephenolize method, resin dephenolize method, sulphonated coal absorption method, biochemical processs, all once carried out the application experiment of long duration.Though groped some treatment processs, also obtained certain effect, there are many weak points respectively in the whole bag of tricks, and is too high as running cost, operation stability is poor, dephenolization effect is not satisfactory or the like.
In recent years, risen a kind of novel process of administering phenolic wastewater both at home and abroad, the core concept of this technology is: the phenolic wastewater of generation utilizes the sensible heat of biological fuel gas to be converted into phenol steam and is passed into the vapourizing furnace bottom as vaporized chemical.The method of this improvement phenolic wastewater will be harmful to environment originally, and the aldehydes matter that intractability is big is converted into combustion gas, has not only improved the calorific value of biological fuel gas, and gasification efficiency and gasification intensity all are improved to some extent.The novel process advantages of simple of this improvement phenolic wastewater, energy-conserving and environment-protective, and also the extra investment that produces is less relatively, has solved the difficult problem that a lot of enterprises phenolic wastewater is handled to a certain extent, has improved social economic benefit and environmental benefit.But through industry operation for a long time, also there is certain defective in the novel process of this improvement phenolic wastewater, as the Chinese patent publication number is CN101481188A, the disclosed phenolic wastewater boil-off gas of this patent metallization processes has been alleviated the difficult problem that phenolic wastewater is administered to a certain extent, but because the sensible heat that biological fuel gas provides is limited, lower boiling benzene, aldehydes matter in the phenolic wastewater can only be vaporizated into steam is passed into vapourizing furnace bottom and uses as vaporized chemical, and high boiling benzene, aldehydes matter is not vaporized, and residues in the water jacket.This part high boiling point benzene, aldehydes matter that residues in the water jacket is accumulated not only and can at water jacket surface scale be influenced heat transfer efficiency for a long time, and needs the manpower periodic blow down, has increased the cost of investment of enterprise.Because these high boiling point aldehydes matters are not vaporized, thereby produce the secondary pollution of aldehydes matter.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, a kind of processing method that phenol aqueous vapor reuse technology is realized biological fuel gas production non-wastewater discharge of using is provided.This technology has realized being gasified totally of phenolic wastewater, really accomplishes the zero release of phenolic wastewater, has effectively avoided problem of environmental pollution.Being gasified totally of phenolic wastewater not only improved the calorific value of biological fuel gas, and gasification efficiency and gasification intensity all are improved to some extent.This processing method also has plurality of advantages such as advantages of simple, capacity usage ratio height, cost of investment are low, stable and reliable operation simultaneously.
Of the present invention be achieved through the following technical solutions:
A kind of phenol aqueous vapor reuse technology of using realizes that biological fuel gas produces the processing method of non-wastewater discharge, it is characterized in that, phenol water supercentrifuge centrifugal splash and the effect of carrying secretly of warm air under, enter the vapourizing furnace bottom fully as vaporized chemical.
According to processing method of the present invention, it comprises: in the phenol water evaporimeter, phenol water is heated to 60～65 ℃, then the phenol water of this temperature is splashed and temperature is under 80～90 ℃ the effect of carrying secretly of warm air supercentrifuge centrifugal, enter the vapourizing furnace bottom fully as vaporized chemical.
According to processing method of the present invention, wherein the number that makes the centrifugal supercentrifuge that splashes of phenol water of Cai Yonging is at least 2, and is preferred more than 4, more preferably more than 6.
According to processing method of the present invention, it comprises the steps: at first biological fuel gas to be entered scavenging tower, biological fuel gas after will lowering the temperature then enters the phenol water evaporimeter, will enter electrical tar precipitator and indirect cool tower successively from the combustion gas that the phenol water evaporimeter exports out again, obtains cold clean combustion gas.
According to processing method of the present invention, it comprises the steps: that temperature out is that 250～350 ℃ biological fuel gas enters scavenging tower with air after room temperature is heated to 80～90 ℃, reduce to about 80 ℃ through the fuel gas temperature behind the scavenging tower, the biological fuel gas that is cooled to about 80 ℃ enters the phenol water evaporimeter, phenol water is heated to 60～65 ℃, the combustion gas that exports out from the phenol water evaporimeter enters electrical tar precipitator and indirect cool tower successively, and cold clean combustion gas can directly be supplied to the user to use.The phenol water that is heated to 60～65 ℃ splashes and temperature is under 80～90 ℃ the effect of carrying secretly of warm air supercentrifuge centrifugal, enters the vapourizing furnace bottom fully as vaporized chemical.
According to processing method of the present invention, its concrete technical scheme is as follows:
Temperature out is that 250～350 ℃ hot biological fuel gas enters airheater (2) from fixed-bed gasification furnace (1), air after being heated to 80～90 ℃, room temperature is entered scavenging tower (3), reduce to about 80 ℃ through the fuel gas temperature behind the scavenging tower (3), the biological fuel gas that is cooled to about 80 ℃ enters phenol water evaporimeter (4), phenol water is heated to 60～65 ℃, the combustion gas of coming out from phenol water evaporimeter (4) enters electrical tar precipitator (6) and indirect cool tower (7) successively, and cold clean combustion gas can directly be supplied to the user to use.Be heated to 60～65 ℃ phenol water supercentrifuge (5) centrifugal splash and temperature be 80～90 ℃ warm air the effect of carrying secretly down, feed bottom the vapourizing furnace (1) as vaporized chemical.
Above-mentioned phenol water can be beaten under supercentrifuge the centrifugal effect of splashing fully is broken for phenol water small droplets, and enters the inner generating gasification reaction of vapourizing furnace fully be converted into combustion gas under the effect of carrying secretly of 80～90 ℃ of warm airs.This has not only improved the calorific value of biological fuel gas, and gasification efficiency and gasification intensity all be improved to some extent, and has thoroughly solved the pollution problem of phenolic wastewater.This processing method has overcome phenol water well and has absorbed the combustion gas sensible heat and partly evaporate and enter the gasification of vapourizing furnace bottom, and high boiling aldehydes matter still remains in the shortcoming in the water jacket, realized the conversion fully of phenol water, there is not the aldehydes matter secondary pollution problem, really accomplished the zero release of phenol water.
Above-mentioned application phenol aqueous vapor reuse technology is realized the phenolic wastewater of the processing method improvement vapourizing furnace of biological fuel gas production non-wastewater discharge, be the combination that waste heat recovery, cycling utilization of wastewater and phenol-containing wastewater are administered, effectively realized the energy-conservation of gas station and reduced discharging.
According to another embodiment of the present invention, it is realized in the following way:
A kind of equipment that is used to realize above-mentioned processing method, it is characterized in that: in described phenol water evaporimeter (4), be provided with supercentrifuge (5), thereby make phenol water supercentrifuge centrifugal splash and the effect of carrying secretly of warm air under, enter the vapourizing furnace bottom fully as vaporized chemical.
According to embodiment preferred, it is characterized in that this equipment also comprises fixed-bed gasification furnace (1), well heater (2), scavenging tower (3), electrical tar precipitator (6) and indirect cool tower (7).
Description of drawings
Fig. 1 uses the schematic flow sheet that phenol aqueous vapor reuse technology is realized the processing method of biological fuel gas production non-wastewater discharge.
The implication of each Reference numeral is as follows among the figure:
1 fixed-bed gasification furnace; 2 airheaters; 3 scavenging tower; 4 phenol water evaporimeters; 5 supercentrifuges; 6 electrical tar precipitators; 7 indirect cool towers; 8 phenol water pumps; 9 entrance of cooling water; 10 cooling water outlets; 11 air intlets; 12 airs.
Embodiment
Below in conjunction with drawings and Examples in detail the present invention is described in detail.But those skilled in the art understand, and following embodiment must not be as limitation of the present invention, and any improvement of the present invention and variation all do not deviate from spirit of the present invention.
Embodiment 1
Temperature out is that 320～330 ℃ biological fuel gas enters airheater (2) from fixed-bed gasification furnace (1), air after being heated to 85～88 ℃, room temperature is entered scavenging tower (3), reduce to 82 ℃ through the fuel gas temperature behind the scavenging tower (3), the biological fuel gas that is cooled to 82 ℃ enters phenol water evaporimeter (4), phenol water is heated to 64 ℃, the combustion gas of coming out from phenol water evaporimeter (4) enters electrical tar precipitator (6) and indirect cool tower (7) successively, and cold clean combustion gas can directly be supplied to the user to use.Be heated to 64 ℃ phenol water supercentrifuge (5) centrifugal splash this mechanical system and temperature be 85～88 ℃ warm air the effect of carrying secretly down, all enter vapourizing furnace (1) bottom and be used as vaporized chemical.
This processing method adopts supercentrifuge centrifugal splashing and the carrying secretly of warm air guaranteed that phenol water all enters vapourizing furnace inside, the phenol water zero discharge of really having realized, and having overcome traditional technology needs manpower to remove the shortcoming of high boiling aldehydes matter, advantages of simple.Because phenol water all enters vapourizing furnace and participates in reaction and be converted into combustion gas, vaporization rate has improved 5%, and vaporized chemical adopts 85～88 ℃ warm air to replace air at room temperature, and gasification intensity has improved more than 12%.
Embodiment 2
Temperature out is that 295～310 ℃ biological fuel gas enters airheater (2) from fixed-bed gasification furnace (1), air after being heated to 83～86 ℃, room temperature is entered scavenging tower (3), reduce to 80 ℃ through the fuel gas temperature behind the scavenging tower (3), the biological fuel gas that is cooled to 80 ℃ enters phenol water evaporimeter (4), phenol water is heated to 62 ℃, the combustion gas of coming out from phenol water evaporimeter (4) enters electrical tar precipitator (6) and indirect cool tower (7) successively, and cold clean combustion gas can directly be supplied to the user to use.Be heated to 62 ℃ phenol water supercentrifuge (5) centrifugal splash and temperature be 83～86 ℃ warm air the effect of carrying secretly down, all enter bottom the vapourizing furnace (1) as vaporized chemical.
This processing method has not only improved the calorific value of biological fuel gas, and vaporization rate improved about 4%, and gasification intensity has improved more than 10%.Compare with traditional technology, this processing method advantages of simple, low, the energy-conserving and environment-protective of processing cost have really realized the phenol water zero discharge, can not produce phenol water and pollute and the secondary pollution problem.Utilizing this processing method to administer phenolic wastewater, is the combination that waste heat recovery, cycling utilization of wastewater and phenol-containing wastewater are administered, and has effectively realized the energy-conservation of gas station and has reduced discharging.
Claims (10)
1. use phenol aqueous vapor reuse technology and realize that biological fuel gas produces the processing method of non-wastewater discharge for one kind, it is characterized in that, phenol water supercentrifuge centrifugal splash and the effect of carrying secretly of warm air under, enter the vapourizing furnace bottom fully as vaporized chemical.
2. according to the processing method of claim 1, it is characterized in that, in the phenol water evaporimeter, phenol water is heated to 60～65 ℃, then the phenol water of this temperature is splashed and temperature is under 80～90 ℃ the effect of carrying secretly of warm air supercentrifuge centrifugal, enter the vapourizing furnace bottom fully as vaporized chemical.
3. according to the processing method of claim 1 or 2, wherein the number that makes the centrifugal supercentrifuge that splashes of phenol water of Cai Yonging is at least 2, and is preferred more than 4, more preferably more than 6.
4. according to each processing method of claim 1-3, it comprises the steps: at first biological fuel gas to be entered scavenging tower, biological fuel gas after will lowering the temperature then enters the phenol water evaporimeter, to enter electrical tar precipitator and indirect cool tower successively from the combustion gas that the phenol water evaporimeter exports out again, obtain cold clean combustion gas.
5. according to the processing method of claim 4, it is characterized in that: temperature out is that 250～350 ℃ hot biological fuel gas is with air heating to 80～90 ℃.
6. according to each processing method of claim 1-5, it is characterized in that: the biological fuel gas that is cooled to 80 ℃ is heated to 60～65 ℃ with the phenol water in the phenol water evaporimeter (4).
7. according to each processing method of claim 1-6, it comprises the steps:
Temperature out is that 250～350 ℃ biological fuel gas enters scavenging tower with air after room temperature is heated to 80～90 ℃, reduce to about 80 ℃ through the fuel gas temperature behind the scavenging tower, the biological fuel gas that is cooled to about 80 ℃ enters the phenol water evaporimeter, phenol water is heated to 60～65 ℃, the combustion gas that exports out from the phenol water evaporimeter enters electrical tar precipitator and indirect cool tower successively, obtains cold clean combustion gas; The phenol water that is heated to 60～65 ℃ simultaneously splashes and temperature is under 80～90 ℃ the effect of carrying secretly of warm air supercentrifuge centrifugal, enters the vapourizing furnace bottom fully as vaporized chemical.
8. according to each processing method of claim 1-7, it comprises the steps:
Temperature out is that 250～350 ℃ hot biological fuel gas enters airheater (2) from fixed-bed gasification furnace (1), air after being heated to 80～90 ℃, room temperature is entered scavenging tower (3), reduce to about 80 ℃ through the fuel gas temperature behind the scavenging tower (3), the biological fuel gas that is cooled to about 80 ℃ enters phenol water evaporimeter (4), phenol water is heated to 60～65 ℃, the combustion gas of coming out from phenol water evaporimeter (4) enters electrical tar precipitator (6) and indirect cool tower (7) successively, obtains cold clean combustion gas; Simultaneously, be heated to 60～65 ℃ phenol water supercentrifuge (5) centrifugal splash and temperature be 80～90 ℃ warm air the effect of carrying secretly down, feed bottom the vapourizing furnace (1) as vaporized chemical.
9. be used to realize the equipment of each processing method of claim 1-8, it is characterized in that: in described phenol water evaporimeter (4), be provided with supercentrifuge (5), thereby make phenol water supercentrifuge centrifugal splash and the effect of carrying secretly of warm air under, enter the vapourizing furnace bottom fully as vaporized chemical.
10. according to the equipment of claim 9, it is characterized in that this equipment also comprises fixed-bed gasification furnace (1), well heater (2), scavenging tower (3), electrical tar precipitator (6) and indirect cool tower (7).
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| CN201010251370.4A CN101974350B (en) | 2010-08-09 | 2010-08-09 | Technological process for producing biomass fuel gas without wastewater discharge by using phenol water gasification and recovery technology |
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| CN201010251370.4A CN101974350B (en) | 2010-08-09 | 2010-08-09 | Technological process for producing biomass fuel gas without wastewater discharge by using phenol water gasification and recovery technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194837A (en) * | 2014-08-18 | 2014-12-10 | 鲁西化工集团股份有限公司煤化工二分公司 | Harmless treatment process for wastewater containing organic matters and device for implementing harmless treatment process |
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| CN101126035A (en) * | 2007-09-18 | 2008-02-20 | 山东义升环保设备有限公司 | Phenol water closed operation high-conversion coal gasification production technique |
| CN101613626A (en) * | 2009-07-09 | 2009-12-30 | 唐山雷浩能源技术装备有限公司 | A kind of technology of production cooled coal gas of no discharge of phenolic water |
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- 2010-08-09 CN CN201010251370.4A patent/CN101974350B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101126035A (en) * | 2007-09-18 | 2008-02-20 | 山东义升环保设备有限公司 | Phenol water closed operation high-conversion coal gasification production technique |
| CN101613626A (en) * | 2009-07-09 | 2009-12-30 | 唐山雷浩能源技术装备有限公司 | A kind of technology of production cooled coal gas of no discharge of phenolic water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194837A (en) * | 2014-08-18 | 2014-12-10 | 鲁西化工集团股份有限公司煤化工二分公司 | Harmless treatment process for wastewater containing organic matters and device for implementing harmless treatment process |
| CN104194837B (en) * | 2014-08-18 | 2017-03-15 | 鲁西化工集团股份有限公司煤化工二分公司 | A kind of harmless treatment process of organic wastewater and its device |
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