CN101974350B - 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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- CN101974350B CN101974350B CN201010251370.4A CN201010251370A CN101974350B CN 101974350 B CN101974350 B CN 101974350B CN 201010251370 A CN201010251370 A CN 201010251370A CN 101974350 B CN101974350 B CN 101974350B
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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
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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 administering method of phenolic wastewater, particularly apply the water reuse technology of phenol and realize the processing method that biological fuel gas produces non-wastewater discharge.
Background technology
Gasifying biomass is that current biomass energy is most widely used and proven technique, and fixed-bed gasification furnace is current by the coal gas generating apparatus generally applied.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, and the generator yield of gas station is larger, and the amount of the useless phenol water that condensation produces is also larger.Phenolic wastewater is made up of phenols, sulfide, prussiate etc., and wherein phenols is based on monohydric phenol, the highest with phenol content, p-cresol between secondly also having.Phenolic compound is a kind of prototype matter poisonous substance, has toxic action to all living individuals.Therefore, phenolic wastewater is not treated is do not allow discharge, and the emission standard that must reach national regulation can be arranged outward, but in this way, company investment cost can significantly increase.
In recent years, how thoroughly to administer the difficult problem of environmental protection that phenolic wastewater is puzzlement gas station always, the expert being engaged in industrial combustion gas design studies carried out long-term 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.Although groped some treatment processs, also achieving certain effect, there is many weak points in various method respectively, as too high in running cost, operation stability is poor, dephenolization effect is not satisfactory etc.
In recent years, risen a kind of novel process of administering phenolic wastewater both at home and abroad, the core concept of this technique was: the phenolic wastewater of generation utilizes the sensible heat of biological fuel gas to be converted into phenol steam and is passed into bottom vapourizing furnace as vaporized chemical.The method of this improvement phenolic wastewater is by originally to bad environmental, and the aldehydes matter that intractability is large is converted into combustion gas, not only increases the calorific value of biological fuel gas, and gasification efficiency and gasification intensity are all 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 produced is relatively little, to some extent solves a difficult problem for a lot of enterprises phenolic wastewater treatment, improves economic benefit and the environmental benefit of society.But be through long industry park plan, also there is certain defect in the novel process of this improvement phenolic wastewater, if China Patent Publication No. is CN101481188A, phenolic wastewater boil-off gas metallization processes disclosed in this patent alleviates a difficult problem for treating phenolic waste water to a certain extent, but the sensible heat provided due to biological fuel gas is limited, lower boiling benzene in phenolic wastewater, aldehydes matter can only be vaporizated into steam to be passed into bottom vapourizing furnace and to use as vaporized chemical, and high boiling benzene, aldehydes matter are not vaporized, residue in water jacket.This part residues in high boiling point benzene in water jacket, aldehydes matter is accumulated for a long time not only at water jacket surface scale, can affect heat transfer efficiency, and needs manpower periodic blow down, adds the cost of investment of enterprise.Because these high boiling point aldehydes matters are not vaporized, thus 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, provide a kind of water reuse technology of phenol of applying and realize the processing method that biological fuel gas produces non-wastewater discharge.This technique achieves being gasified totally of phenolic wastewater, really accomplishes the zero release of phenolic wastewater, effectively prevent problem of environmental pollution.Being gasified totally of phenolic wastewater not only increases the calorific value of biological fuel gas, and gasification efficiency and gasification intensity are all improved to some extent.The plurality of advantages such as this processing method also has advantages of simple simultaneously, capacity usage ratio is high, cost of investment is low, stable and reliable operation.
Of the present inventionly to be achieved through the following technical solutions:
Apply the water reuse technology of phenol and realize the processing method that biological fuel gas produces non-wastewater discharge, it is characterized in that, phenol water, under the centrifugal splashing of supercentrifuge and the effect of carrying secretly of warm air, enters completely bottom vapourizing furnace and is used as vaporized chemical.
According to processing method of the present invention, it comprises: in phenol water evaporimeter, phenol water is heated to 60 ~ 65 DEG C, under the effect of carrying secretly then the phenol water of this temperature being the warm air of 80 ~ 90 DEG C in centrifugal splashing and the temperature of supercentrifuge, enters completely bottom vapourizing furnace and be used as vaporized chemical.
According to processing method of the present invention, the number of the supercentrifuge of the centrifugal splashing of phenol water that makes wherein adopted is at least 2, preferably more than 4, more preferably more than 6.
According to processing method of the present invention, it comprises the steps: first biological fuel gas to be entered scavenging tower, then the biological fuel gas after cooling is entered phenol water evaporimeter, then the combustion gas exporting out from phenol water evaporimeter is entered electrical tar precipitator and indirect cool tower successively, obtain cold clean combustion gas.
According to processing method of the present invention, it comprises the steps: that temperature out is that air is entered scavenging tower by the biological fuel gas of 250 ~ 350 DEG C after room temperature is heated to 80 ~ 90 DEG C, fuel gas temperature after scavenging tower is down to about 80 DEG C, the biological fuel gas being cooled to about 80 DEG C enters phenol water evaporimeter, phenol water is heated to 60 ~ 65 DEG C, the combustion gas exporting out from phenol water evaporimeter enters electrical tar precipitator and indirect cool tower successively, and cold clean combustion gas can directly be supplied to user to use.Under the effect of carrying secretly that the phenol water being heated to 60 ~ 65 DEG C is the warm air of 80 ~ 90 DEG C in centrifugal splashing and the temperature of supercentrifuge, enter completely bottom vapourizing furnace and be used as vaporized chemical.
According to processing method of the present invention, its concrete technical scheme is as follows:
Temperature out is that the hot biological fuel gas self-retaining bed gasification furnace (1) of 250 ~ 350 DEG C enters airheater (2), air is entered scavenging tower (3) after room temperature is heated to 80 ~ 90 DEG C, fuel gas temperature after scavenging tower (3) is down to about 80 DEG C, the biological fuel gas being cooled to about 80 DEG C enters phenol water evaporimeter (4), phenol water is heated to 60 ~ 65 DEG C, enter electrical tar precipitator (6) and indirect cool tower (7) successively from phenol water evaporimeter (4) outlet combustion gas out, cold clean combustion gas can directly be supplied to user to use.Under the effect of carrying secretly that the phenol water being heated to 60 ~ 65 DEG C is the warm air of 80 ~ 90 DEG C in centrifugal splashing and the temperature of supercentrifuge (5), pass into vapourizing furnace (1) bottom as vaporized chemical.
Above-mentioned phenol water can be beaten completely under the centrifugal splashing effect of supercentrifuge is broken for phenol water small droplets, and under the effect of carrying secretly of 80 ~ 90 DEG C of warm airs, enters the inner generating gasification reaction of vapourizing furnace be completely converted into combustion gas.Which not only improves the calorific value of biological fuel gas, and gasification efficiency and gasification intensity are all improved to some extent, and thoroughly solve the pollution problem of phenolic wastewater.This processing method overcomes phenol water well and absorbs the evaporation of combustion gas sensible heat part and enter bottom vapourizing furnace and gasify, and high boiling aldehydes matter still remains in the shortcoming in water jacket, achieve the conversion completely of phenol water, there is not the problem of aldehydes matter secondary pollution, really accomplished the zero release of phenol water.
The water reuse technology of above-mentioned application phenol realizes the phenolic wastewater that biological fuel gas produces the processing method improvement vapourizing furnace of non-wastewater discharge, be the combination that waste heat recovery, cycling utilization of wastewater and phenol-containing wastewater are administered, effectively achieve the energy-conservation of gas station and reduction of discharging.
According to another embodiment of the present invention, it realizes in the following way:
A kind of equipment for realizing above-mentioned processing method, it is characterized in that: in described phenol water evaporimeter (4), be provided with supercentrifuge (5), thus make phenol water under the centrifugal splashing of supercentrifuge and the effect of carrying secretly of warm air, enter completely bottom vapourizing furnace and be used as vaporized chemical.
According to preferred embodiment, 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).
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the water reuse technology of application phenol realizes that biological fuel gas produces the processing method of non-wastewater discharge.
In figure, the implication of each Reference numeral is as follows:
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 air vouts.
Embodiment
Below in conjunction with drawings and Examples in detail the present invention is described in detail.But those skilled in the art understand, following embodiment must not as limitation of the present invention, and any improvement of the present invention and change all do not deviate from spirit of the present invention.
Embodiment 1
Temperature out is that the biological fuel gas self-retaining bed gasification furnace (1) of 320 ~ 330 DEG C enters airheater (2), air is entered scavenging tower (3) after room temperature is heated to 85 ~ 88 DEG C, fuel gas temperature after scavenging tower (3) is down to 82 DEG C, the biological fuel gas being cooled to 82 DEG C enters phenol water evaporimeter (4), phenol water is heated to 64 DEG C, enter electrical tar precipitator (6) and indirect cool tower (7) successively from phenol water evaporimeter (4) outlet combustion gas out, cold clean combustion gas can directly be supplied to user to use.Under the effect of carrying secretly that the phenol water being heated to 64 DEG C is the warm air of 85 ~ 88 DEG C in this mechanical system of centrifugal splashing and the temperature of supercentrifuge (5), all enter vapourizing furnace (1) bottom and be used as vaporized chemical.
This processing method adopts the centrifugal splashing of supercentrifuge and carrying secretly of warm air, and ensure that phenol water all enters vapourizing furnace inside, the phenol water zero discharge really achieved, overcoming traditional technology needs manpower to remove the shortcoming of high boiling aldehydes matter, advantages of simple.Participate in reaction be converted into combustion gas because phenol water all enters vapourizing furnace, vaporization rate improves 5%, and vaporized chemical adopts the warm air of 85 ~ 88 DEG C to replace air at room temperature, and gasification intensity improves more than 12%.
Embodiment 2
Temperature out is that the biological fuel gas self-retaining bed gasification furnace (1) of 295 ~ 310 DEG C enters airheater (2), air is entered scavenging tower (3) after room temperature is heated to 83 ~ 86 DEG C, fuel gas temperature after scavenging tower (3) is down to 80 DEG C, the biological fuel gas being cooled to 80 DEG C enters phenol water evaporimeter (4), phenol water is heated to 62 DEG C, enter electrical tar precipitator (6) and indirect cool tower (7) successively from phenol water evaporimeter (4) outlet combustion gas out, cold clean combustion gas can directly be supplied to user to use.Under the effect of carrying secretly that the phenol water being heated to 62 DEG C is the warm air of 83 ~ 86 DEG C in centrifugal splashing and the temperature of supercentrifuge (5), all enter vapourizing furnace (1) bottom as vaporized chemical.
This processing method not only increases the calorific value of biological fuel gas, and vaporization rate improves about 4%, and gasification intensity improves more than 10%.Compared with traditional technology, this processing method advantages of simple, processing cost are low, energy-conserving and environment-protective, really achieve phenol water zero discharge, can not produce phenol water pollutions and secondary pollution problem.Utilize this processing method to administer phenolic wastewater, be the combination that waste heat recovery, cycling utilization of wastewater and phenol-containing wastewater are administered, effectively achieve the energy-conservation of gas station and reduction of discharging.
Claims (4)
1. apply the processing method that the water reuse technology of phenol realizes biological fuel gas production non-wastewater discharge for one kind, it is characterized in that, first biological fuel gas is entered scavenging tower, then the biological fuel gas after cooling is entered phenol water evaporimeter, again the combustion gas exporting out from phenol water evaporimeter is entered electrical tar precipitator and indirect cool tower successively, obtain cold clean combustion gas, in phenol water evaporimeter, phenol water is heated to 60 ~ 65 DEG C, then under the effect of carrying secretly the phenol water of this temperature being the warm air of 80 ~ 90 DEG C in centrifugal splashing and the temperature of supercentrifuge, enter completely bottom vapourizing furnace and be used as vaporized chemical, the number of the supercentrifuge of the centrifugal splashing of phenol water that makes wherein adopted is at least 2, wherein, temperature out is that air is entered scavenging tower by the biological fuel gas of 250 ~ 350 DEG C after room temperature is heated to 80 ~ 90 DEG C, fuel gas temperature after scavenging tower is down to about 80 DEG C, the biological fuel gas being cooled to about 80 DEG C enters phenol water evaporimeter.
2. apply the processing method that the water reuse technology of phenol realizes biological fuel gas production non-wastewater discharge for one kind, it is characterized in that, first biological fuel gas is entered scavenging tower, then the biological fuel gas after cooling is entered phenol water evaporimeter, again the combustion gas exporting out from phenol water evaporimeter is entered electrical tar precipitator and indirect cool tower successively, obtain cold clean combustion gas, in phenol water evaporimeter, phenol water is heated to 60 ~ 65 DEG C, then under the effect of carrying secretly the phenol water of this temperature being the warm air of 80 ~ 90 DEG C in centrifugal splashing and the temperature of supercentrifuge, enter completely bottom vapourizing furnace and be used as vaporized chemical, the number of the supercentrifuge of the centrifugal splashing of phenol water that makes wherein adopted is at least 2, wherein, temperature out is that the hot biological fuel gas self-retaining bed gasification furnace (1) of 250 ~ 350 DEG C enters airheater (2), air is entered scavenging tower (3) after room temperature is heated to 80 ~ 90 DEG C, fuel gas temperature after scavenging tower (3) is down to about 80 DEG C.
3. according to the processing method of claim 1 or 2, it is characterized in that, the number of the supercentrifuge of the centrifugal splashing of phenol water that makes wherein adopted is more than 4.
4. for realizing the equipment of any one of claim 1-3 processing method, 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), supercentrifuge (5) is provided with in described phenol water evaporimeter (4), thus make phenol water under the centrifugal splashing of supercentrifuge and the effect of carrying secretly of warm air, enter completely bottom vapourizing furnace and be used as vaporized chemical.
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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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| Publication number | Priority date | Publication date | Assignee | Title |
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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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| Publication number | Priority date | Publication date | Assignee | Title |
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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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