CN205387519U - Treatment facility that contains phenol sewage - Google Patents
Treatment facility that contains phenol sewage Download PDFInfo
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- CN205387519U CN205387519U CN201521128617.8U CN201521128617U CN205387519U CN 205387519 U CN205387519 U CN 205387519U CN 201521128617 U CN201521128617 U CN 201521128617U CN 205387519 U CN205387519 U CN 205387519U
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Abstract
The utility model provides a treatment facility that contains phenol sewage, include and contain phenol sewage storage reservoir, filtering ponds, negative pressure evaporator, dehydration ware, blender and fluidized bed boiler, negative pressure evaporator 's top is provided with including the import of phenol sewage, and the bottom is provided with the export of dense water, and a lateral wall of blender is provided with dense water inlet, and another lateral wall is provided with the export of phenol water coal slime, and dense water inlet is connected with filtering ponds through the pipeline through pipe connection, sewage import with the export of dense water, filtering ponds and pass through the pipe connection including phenol sewage storage reservoir, the import of low order coal was arranged in receiving the low order coal from the dehydration ware drying after during the top of blender was provided with, and the lateral wall of fluidized bed boiler is provided with the import of phenol water coal slime, the import of phenol water coal slime with phenol water coal slime export lug connection. The utility model discloses the treatment facility that contains phenol sewage matched stack is simple, and convenient operation is with low costs, can not cause the environment and pollute abundant green.
Description
Technical field
This utility model relates to trade effluent and recycles field, in particular to the process equipment of a kind of phenol-containing wastewater.
Background technology
Modern Coal-based Chemical industry water consumption is big, and the sewage quantity of generation is also very big.Water resource and water environmental problems have become the bottleneck of restriction Modern Coal-based Chemical industry development, seek high treating effect, technology stability is strong, operating cost is low sewage disposal technology, it has also become the self-demand of coal chemical industry enterprises development and external requirement.The Coal Gasification Technology of coal preparing natural gas adopts Lurgi stove, BGL stove fixed bed pressured gasification technology, coal gasification organic sewage is essentially from raw gas washing, cooling and purification process draining in coal gasification course, and water quality and gasification furnace type, service condition, coal etc. are closely related.Major pollutants in coal chemical industry sewage are phenols, including phenol, methylphenol, polyhydric phenols etc., account for the 40～80% of COD of sewage, simultaneously possibly together with monocycle, multi-ring nitrogenous arene, oxygen-containing, sulfur heterocyclic ring class, polycyclic aromatic hydrocarbon, fatty acid, cyanogen, ammonia nitrogen etc. pollutant.
At present, phenol-containing wastewater processing method mainly has biochemistry, extraction, oxidation, electrolysis, stripping, absorption and burning etc..Biochemical process is the phenol-containing wastewater treatment technology that current Application comparison is general.It utilizes bacteria metabolism effect, makes the aldehydes matter in waste water be degraded and be converted into innocuous substance.The advantage that biochemical process has applied range, disposal ability is big and processing cost is low.Shortcoming is that floor space is big, by waste water pH value, temperature, affects containing factors such as phenol amounts.Extraction is to utilize the extractant being insoluble in water to contact with waste water, the aldehydes matter in waste water is made to carry out combination physically or chemically with extractant, make aldehydes matter transfer in the middle of extractant, then take method physically or chemically to make aldehydes matter separate from which, and reclaim as product.This method has that equipment investment is few, floor space is little, high treating effect, operation control simple, and shortcoming is owing to the extractant used all has certain dissolubility in water, therefore has a small amount of solvent to run off unavoidably.
Oxidizing process mainly adopts the strong oxidizers such as ozone, chlorine, chlorine dioxide, sodium hypochlorite and hydrogen peroxide, aldehydes matter and other oxidation operation is decomposed, makes phenol wastewater be purified.The advantage of this method is that process equipment is simple, small investment, high treating effect, and has the advantages that to enter duty at any time, is particularly well-suited to the occasion of unstable discharge；Shortcoming mainly processes costly, is not suitable for the process occasion of high concentration, big yield.The Organic substance charged particles such as electrolysis is under electric field action, the phenols in waste water migrate to pole plate, and redox reaction occurs on pole plate, are oxidized into the simple material such as carbon dioxide and water, reach to purify the purpose of waste water.The advantages such as this method has small investment, floor space is little, equipment controls easily, high treating effect；Shortcoming is that processing cost is higher.Air-extraction is to utilize aldehydes matter in water and this feature of difference of dissolubility in steam, it is achieved is separated by aldehydes matter and reclaims, to reach to purify the purpose of phenol wastewater.The advantage of this method is not only to bring new pollutant into, and can realize reclaiming the purpose of phenol, and the purity reclaiming phenol is higher, and the processing cost that shortcoming is this method is higher, need to consume a large amount of steam.The advantage of absorption method is that equipment is simple, equipment manufacturing cost is low, reduced investment, treatment effect better, floor space is also little；Shortcoming is owing to its adsorption capacity is limited, it is difficult to process the phenol wastewater of high concentration.Burning method is under the high temperature of 800-1000 DEG C, and phenol wastewater is carried out burning disposal, and aldehydes matter and other Organic substance are completely oxidized to the simple material such as carbon dioxide and water.This method advantage is that equipment is simple, floor space is little, high treating effect, investment are low, it is possible to process adopt that other method is difficult to process containing phenol the phenol wastewater containing multiple high-enriched organics simultaneously；Shortcoming is that heat consumption is big, need to add fuel oil, process costly, and aldehydes matter cannot reclaim, and consumes bigger to the body of heater of incinerator.
The general cost of process technique of visible above-mentioned phenol-containing wastewater is higher, and pollution level is big, does not realize phenol-containing wastewater effectively utilizing conversion and creating certain economic benefit.
In view of this, special proposition this utility model.
Utility model content
First purpose of the present utility model is in that to provide the processing method of a kind of phenol-containing wastewater, it is simple that described method has processing method, easy to operate, cost is low, will not to the abundant environmental protection of environment, and waste treatment capacity is strong, phenol-containing wastewater zero-emission can be realized, phenol-containing wastewater can also fully utilize generation heat energy recycle, create certain economic benefit, improve the added value of phenol-containing wastewater.
Second purpose of the present utility model is in that to provide the process equipment of a kind of phenol-containing wastewater, the advantage that described sewage treatment equipment well can coordinate the zero-emission recycling achieving phenol-containing wastewater with processing method.
In order to realize above-mentioned purpose of the present utility model, spy by the following technical solutions:
This utility model embodiment provides the processing method of a kind of phenol-containing wastewater, comprises the steps:
Phenol-containing wastewater is standby through filtration, the concentration dense water of formation, and the mass ratio simultaneously through crushing and screening, dried and described dense water mixing and stirring, middle low-order coal being formed phenol water coal slime, wherein said dense water and middle low-order coal is 10-45:100；
Phenol water coal slime is sent into burning in fluidized-bed combustion boiler, and the heat energy that burning is formed is recycled.
nullThe main treatment measures of phenol-containing wastewater of the prior art are biochemical、Extract、Oxidation、Electrolysis、Stripping、Adsorb and burn these methods，But these method costs are high，Do not take into full account economy，The also relatively larger theory with environmental protection of polluting is disagreed，Prior art additionally also has the method adopting rotary kiln to carry out phenol-containing wastewater process，Such as application number is a kind of method and system utilizing rotary kiln to carry out phenol water disposal and utilization disclosed in the patent of 201510003037.4，Its method and system is: first at an internally installed jet pipe of rotary kiln head position，Jet pipe is connected to phenol water pot by pipeline and pump，Described jet pipe has the hole for water spraying sprayed up，Drop in the burned material that rotary kiln is discharged after the ejection atomization of phenol water，Form phenol water mixed vapour，Phenol water mixed vapour sequentially passes through forward the cooling band in kiln in kiln under the drive of negative-pressure air-flow、Clinkering zone and preheating zone，Finally discharge.But adopt this rotary kiln phenol water disposal system direct-injection phenol water, the treating capacity absorbing phenol water is smaller, and now general conventional coal chemical industry enterprises is without rotary kiln device, the materials such as the sulfur that contains in phenol water, phenol, ammonia, steam is formed with fume emission by gasification, pollution level is very big, welding.
This utility model is in order to conscientiously solve the technical problem appeared above, provide the processing method of a kind of phenol-containing wastewater, first phenol-containing wastewater is filtered, filtration is that the mode of filtration can be chosen as the one of which in sand filtration, multi-medium filtering and membrane filtration in order to be removed by the materials such as the particulate matter in sewage, tar, dust, lime-ash.Then concentration forms dense phenol water, the method of concentration is preferably selected under vacuum state the mode of evaporation, temperature controls at 70-80 DEG C, this method for concentration not only energy consumption is low, and be conducive to follow-up burn operation after being removed by a large amount of water in phenol-containing wastewater, if it is high to adopt film to carry out concentrating not only energy consumption, operate also more complicated, film will regenerate after not only easily blocking but also using a period of time, and use cost is high.
After phenol-containing wastewater pretreatment, it is mixed to form phenol water coal slime with through crushing and screening, dry middle low-order coal, the rate controlled of mix and blend is at 500-600rad/min, it is preferable that 550rad/min, so that stir best operation under high stir speed (S.S.) state.The mass ratio being in that between dense water and middle low-order coal that wherein should be noted that, need to be strict controlled between 10-45:100, because quality proportioning between the two directly decides the effect of follow-up mixed combustion, if the calorific value formed after the unreasonable burning of proportioning is low, or incomplete combustion also can produce certain harmful gas, it is impossible to the heat energy of generation realizes maximum benefit and economization.Preferably mass ratio is preferably 15-30:100, and that more excellent is 18:100, for instance can also select 16:100,17:100,21:100 etc., this index parameter is that utility model people finds out through a large amount of practices, it is necessary to carry out follow-up burn operation again after strict this index of control.
And then the phenol water coal slime formed after mixing is burnt in fluidized-bed combustion boiler, the heat energy formed after burning is recycled, in whole process technique, negative pressure evaporation and the dry the two step of middle low-order coal all need to consume substantial amounts of high temperature and high pressure steam, just the heat energy that burning is formed is returned the two step to utilize, not only eliminate the extra problem finding other energy to occur, heat energy effectively can also be utilized, improve the added value of phenol-containing wastewater, create certain economic benefit, generally the flue gas that fluidized-bed combustion boiler is formed can be introduced in boiler-steam dome thus adding vapours during concrete operations, and Steam Recovery is utilized.If having remaining heat energy to can be additionally used in living area or process unit carrying out power generation and heat supply, practicality is significantly high.The method of this creationary recycling heat energy of this utility model still belongs to pioneering in the art.
Preferably, middle low-order coal crushing and screening to granularity at below 12mm, it is desirable to for 8-10mm, so can improve the homogeneity of phenol water coal slime after mixing.
Preferably, middle low-order coal is preferably dried to water content at below 10wt%, it is preferable that below 5wt%, if the too high effect that can affect burning on the contrary of middle low-order coal water content.
This utility model embodiment, except providing the processing method of a kind of phenol-containing wastewater, additionally provides the process equipment of a kind of phenol-containing wastewater, including: phenol-containing wastewater reservoir, filtering ponds, vacuum evaporator, dewatering dryer, blender and fluidized-bed combustion boiler；
The top of described vacuum evaporator is provided with phenol-containing wastewater import, bottom is provided with dense water out, one sidewall of blender is provided with dense water inlet, another sidewall is provided with the outlet of phenol water coal slime, described dense water inlet is connected by pipeline with dense water out, described phenol-containing wastewater import is connected with described filtering ponds by pipeline, and described filtering ponds are connected by pipeline with described phenol-containing wastewater reservoir；
The top of blender is provided with middle low-order coal import for receiving from the dried middle low-order coal of dewatering dryer, and the sidewall of fluidized-bed combustion boiler is provided with phenol water coal slime import, and described phenol water coal slime import is directly connected to the outlet of described phenol water coal slime.
The phenol-containing wastewater of this utility model embodiment processes equipment, floor space is little, low cost, match with phenol-containing wastewater processing method of the present utility model, process phenol-containing wastewater ability strong, whole technical process can realize phenol-containing wastewater zero-emission, efficiently solve the problem that phenol water pollutes, all products are all recyclable or are made directly sale by separating further, and economic benefit is good, is suitable to be widely popularized use.
Preferably, vacuum evaporator can be the one of which in direct contact type vaporizer or indirect contact vaporizer, it is preferably selected indirect contact vaporizer, in indirect contact vaporizer, steam walks shell side, phenol-containing wastewater walks tube side, high-temperature high-pressure steam and the material containing phenol complete heat exchange in vaporizer, and after the phenol-containing wastewater after concentration, bottom is discharged continuously, and fresh phenol-containing wastewater is continuously added to by sidepiece.
Preferably, crusberscreen is also included；Enter the described crusberscreen middle low-order coal after broken to fall in dewatering dryer.
Preferably, also including fluidized-bed combustion boiler drum, the top of described boiler-steam dome is provided with steam (vapor) outlet, and the top of described vacuum evaporator is provided with the first steam inlet, and described steam (vapor) outlet is connected by pipeline with described first steam inlet.
Preferably, the top of described dewatering dryer is provided with the second steam inlet, and described steam (vapor) outlet is connected by pipeline with described second steam inlet.Thus the recycling of the high temperature and high pressure steam realized in boiler-steam dome.
Also including material conveyer, one end of described upper material conveyer connects described phenol water coal slime import, and the other end connects the outlet of described phenol water coal slime.
Preferably, described filtering ponds can be the one of which in sand filter, multi-medium filtering pond.Be preferably sand filter because sand filter is not only effective and low cost.
Finally, whole phenol-containing wastewater processes system and preferably also includes flue gas purification system, and described flue gas purification system is for purifying the flue gas cemented out from described boiler-steam dome.
Prior art is compared, and the beneficial effects of the utility model are:
(1) this utility model embodiment provides the processing method of a kind of phenol-containing wastewater, joins fine coal and enter burning in circulating fluid bed boiler after being concentrated by phenol water, and phenol is eventually converted into CO2And H2O, efficiently solves phenol water pollution problems, and by the heat energy recycle of burning, creates economic benefit；
(2) phenol-containing wastewater is concentrated by negative pressure evaporation, effectively reduce phenol water volume, the high temperature and high pressure steam that heat used by concentration sewage produces from CFBB, economical reliable, and take full advantage of the fine coal in coal mining process, improve the utilization rate of coal, and provide certain heat after being burned by the Organic substance in phenol-containing wastewater, also reduce its cost needing to process further；
(3) equipment investment is little, floor space is little, operating cost is low in phenol-containing wastewater of the present utility model process, slitless connection can be realized with Modern Coal-based Chemical enterprise, by fine coal and concentration phenol water are mixed into burning in circulating fluid bed boiler, efficiently solve the problem that fine coal is piled up and is difficult by the one hand, efficiently solve phenol-containing wastewater pollution problem on the other hand.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below.
Fig. 1 is the process equipment structure chart of the phenol-containing wastewater of this utility model embodiment one；
Fig. 2 is the process equipment structure chart of the phenol-containing wastewater of this utility model embodiment two；
Fig. 3 is the process equipment structure chart of the phenol-containing wastewater of this utility model embodiment three.
Accompanying drawing labelling:
101-phenol-containing wastewater reservoir；102-filtering ponds；
103-vacuum evaporator；104-crusberscreen；
105-dewatering dryer；106-blender；
The upper material conveyer of 107-；108-fluidized-bed combustion boiler；
109-boiler-steam dome；110-flue gas purification system.
Detailed description of the invention
Below in conjunction with embodiment, embodiment of the present utility model is described in detail, it will be appreciated by those skilled in the art that the following example is merely to illustrate this utility model, and is not construed as limiting scope of the present utility model.Unreceipted actual conditions person in embodiment, conventionally the condition of condition or manufacturer's suggestion carries out.Agents useful for same or the unreceipted production firm person of instrument, be and can pass through the commercially available conventional products bought and obtain.
Embodiment 1
Accompanying drawing 1 is the process equipment structure chart of the phenol-containing wastewater of this utility model embodiment one, specifically includes phenol-containing wastewater reservoir 101, filtering ponds 102, vacuum evaporator 103, dewatering dryer 105, blender 106 and fluidized-bed combustion boiler 108；The sidewall of vacuum evaporator 103 is provided with phenol-containing wastewater import, bottom is provided with dense water out, the top of blender 106 is provided with dense water inlet, sidewall is provided with the outlet of phenol water coal slime, dense water inlet is connected by pipeline with dense water out, phenol-containing wastewater import is connected with filtering ponds by pipeline, and filtering ponds are connected by pipeline with phenol-containing wastewater reservoir；Another sidewall of blender 106 is provided with middle low-order coal import for receiving from the dried middle low-order coal of dewatering dryer 105, middle low-order coal in dewatering dryer 105 is passed through from crusberscreen 104 and is pulverized, the sidewall of fluidized-bed combustion boiler 108 is provided with phenol water coal slime import, and phenol water coal slime import is connected by upper material conveyer 107 with the outlet of phenol water coal slime；
The phenol-containing wastewater of the present embodiment processes the specific works flow process of equipment: first, phenol-containing wastewater produced by manufacturing enterprise is introduced in phenol-containing wastewater reservoir 101, then squeeze into filtering ponds 102 from phenol-containing wastewater reservoir 101, the filtering ponds of this embodiment are sand filter, in sand filter, the material such as the particulate matter that has in phenol-containing wastewater, tar, dust, lime-ash is effectively removed.The phenol-containing wastewater of the materials such as removing, particulate matter, tar, dust, lime-ash enters in vacuum evaporator 103, in vacuum evaporator 103, phenol-containing wastewater is concentrated, the temperature of operation controls at 70 DEG C, the vacuum evaporator of the present embodiment is indirect contact vaporizer, after phenol-containing wastewater after concentration, bottom is discharged continuously, and fresh phenol-containing wastewater is continuously added to by sidepiece.Meanwhile, first the middle low-order coal generation woods jet coal of the present embodiment is sized to granularity at below 12mm in crusberscreen 104, then in dewatering dryer 105, it is dried to water content at below 10wt%, then middle low-order coal is mixed with the mass ratio of 100:10-45 with the phenol-containing wastewater after concentration in blender, mix and blend rate controlled is at 600rad/min, mixed phenol-containing wastewater and middle low-order coal are delivered into fluidized-bed combustion boiler 108 through feeding and burn, and the heat energy that burning is formed is recycled.
Wherein, the ature of coal situation of the present embodiment is as shown in table 1 below, is not detected by phenol content by carrying out detection in the ash after burning in fluidized-bed combustion boiler, and the phenol content in flue gas is 1.93mg/L；
Table 1 coal analysis table
Phenol-containing wastewater concentrated by negative pressure evaporation after front and back concentration change as shown in table 2 below, it is seen that the concentrated effect of negative pressure evaporation is very good；
Change before and after the concentration of table 2 phenol water
Embodiment 2
Accompanying drawing 2 is the process equipment structure chart of the phenol-containing wastewater of this utility model embodiment two, specifically includes phenol-containing wastewater reservoir 101, filtering ponds 102, vacuum evaporator 103, dewatering dryer 105, blender 106 and fluidized-bed combustion boiler 108；The sidewall of vacuum evaporator 103 is provided with phenol-containing wastewater import, bottom is provided with dense water out, the top of blender 106 is provided with dense water inlet, sidewall is provided with the outlet of phenol water coal slime, dense water inlet is connected by pipeline with dense water out, phenol-containing wastewater import is connected with filtering ponds by pipeline, and filtering ponds are connected by pipeline with phenol-containing wastewater reservoir；Another sidewall of blender 106 is provided with middle low-order coal import for receiving from the dried middle low-order coal of dewatering dryer 105, middle low-order coal in dewatering dryer 105 is passed through from crusberscreen 104 and is pulverized, the sidewall of fluidized-bed combustion boiler 108 is provided with phenol water coal slime import, phenol water coal slime import is connected by upper material conveyer 107 with the outlet of phenol water coal slime, what be connected with fluidized-bed combustion boiler has boiler-steam dome 109, the top of boiler-steam dome 109 is provided with steam (vapor) outlet, the top of vacuum evaporator 103 is provided with the first steam inlet, the top of dewatering dryer 105 is provided with the second steam inlet, first steam inlet, second steam inlet is all connected by pipeline with steam (vapor) outlet；
The phenol-containing wastewater of the present embodiment processes the specific works flow process of equipment: first, phenol-containing wastewater produced by manufacturing enterprise is introduced in phenol-containing wastewater reservoir 101, then squeeze into filtering ponds 102 from phenol-containing wastewater reservoir 101, the filtering ponds of this embodiment are multi-medium filtering pond, in sand filter, the material such as the particulate matter that has in phenol-containing wastewater, tar, dust, lime-ash is effectively removed.The phenol-containing wastewater of the materials such as removing, particulate matter, tar, dust, lime-ash enters in vacuum evaporator 103, in vacuum evaporator 103, phenol-containing wastewater is concentrated, the temperature of operation controls at 80 DEG C, steam needed for vacuum evaporator 103 enters from first steam inlet at top, the vacuum evaporator of the present embodiment is direct contact type vaporizer, after phenol-containing wastewater after concentration, bottom is discharged continuously, and fresh phenol-containing wastewater is continuously added to by sidepiece.nullMeanwhile，First the middle low-order coal Tongliao brown coal of the present embodiment are sized to granularity at 8-10mm in crusberscreen 104，Then in dewatering dryer 105, it is dried to water content at below 5wt%，Steam needed for dewatering dryer 105 enters from second steam inlet at top，Then middle low-order coal is mixed with the mass ratio of 100:15-30 with the phenol-containing wastewater after concentration in blender，Mix and blend rate controlled is at 500rad/min，Mixed phenol-containing wastewater and middle low-order coal are delivered into fluidized-bed combustion boiler 108 through feeding and burn，The flue gas that burning is formed enters the steam that the water of boiler-steam dome is heated in boiler-steam dome 109 High Temperature High Pressure and goes out from the steam (vapor) outlet at top and recycle，A part returns the vacuum evaporator 103 of concentration step and enters from the first steam inlet，And the dewatering dryer 105 of drying steps enters from the second steam inlet and recycles，Another part is used for living area or process unit power generation and heat supply.Certainly, the mode that concentration link may be used without membrance concentration except adopting vacuum evaporator carries out.
Wherein, the ature of coal situation of the present embodiment is as shown in table 3 below, is not detected by phenol content by carrying out detection in the ash after burning in fluidized-bed combustion boiler, and the phenol content in flue gas is 2.18mg/L；
Table 3 coal analysis table
Phenol-containing wastewater concentrated by negative pressure evaporation after front and back concentration change as shown in table 4 below, it is seen that the concentrated effect of negative pressure evaporation is very good；
Change before and after the concentration of table 4 phenol water
Embodiment 3
Accompanying drawing 3 is the process equipment structure chart of the phenol-containing wastewater of this utility model embodiment three, specifically includes phenol-containing wastewater reservoir 101, filtering ponds 102, vacuum evaporator 103, dewatering dryer 105, blender 106 and fluidized-bed combustion boiler 108；The sidewall of vacuum evaporator 103 is provided with phenol-containing wastewater import, bottom is provided with dense water out, the top of blender 106 is provided with dense water inlet, sidewall is provided with the outlet of phenol water coal slime, dense water inlet is connected by pipeline with dense water out, phenol-containing wastewater import is connected with filtering ponds by pipeline, and filtering ponds are connected by pipeline with phenol-containing wastewater reservoir；Another sidewall of blender 106 is provided with middle low-order coal import for receiving from the dried middle low-order coal of dewatering dryer 105, middle low-order coal in dewatering dryer 105 is passed through from crusberscreen 104 and is pulverized, the sidewall of fluidized-bed combustion boiler 108 is provided with phenol water coal slime import, phenol water coal slime import is connected by upper material conveyer 107 with the outlet of phenol water coal slime, what be connected with fluidized-bed combustion boiler has boiler-steam dome 109, the top of boiler-steam dome 109 is provided with steam (vapor) outlet, the top of vacuum evaporator 103 is provided with the first steam inlet, the top of dewatering dryer 105 is provided with the second steam inlet, first steam inlet, second steam inlet is all connected by pipeline with steam (vapor) outlet, last flue gas purification system 110 is for purifying the flue gas cemented out from boiler-steam dome；
The phenol-containing wastewater of the present embodiment processes the specific works flow process of equipment: first, phenol-containing wastewater produced by manufacturing enterprise is introduced in phenol-containing wastewater reservoir 101, then squeeze into filtering ponds 102 from phenol-containing wastewater reservoir 101, the filtering ponds of this embodiment are multi-medium filtering pond, in sand filter, the material such as the particulate matter that has in phenol-containing wastewater, tar, dust, lime-ash is effectively removed.The phenol-containing wastewater of the materials such as removing, particulate matter, tar, dust, lime-ash enters in vacuum evaporator 103, in vacuum evaporator 103, phenol-containing wastewater is concentrated, the temperature of operation controls at 80 DEG C, steam needed for vacuum evaporator 103 enters from first steam inlet at top, the vacuum evaporator of the present embodiment is direct contact type vaporizer, after phenol-containing wastewater after concentration, bottom is discharged continuously, and fresh phenol-containing wastewater is continuously added to by sidepiece.nullMeanwhile，First the middle low-order coal Tongliao brown coal of the present embodiment are sized to granularity at below 8mm in crusberscreen 104，Then in dewatering dryer 105, it is dried to water content at 9wt%，Steam needed for dewatering dryer 105 enters from second steam inlet at top，Then middle low-order coal is mixed with the mass ratio of 100:18 with the phenol-containing wastewater after concentration in blender，Mix and blend rate controlled is at 550rad/min，Mixed phenol-containing wastewater and middle low-order coal are delivered into fluidized-bed combustion boiler 108 through feeding and burn，Fluidized-bed combustion boiler temperature 850 DEG C，The flue gas that burning is formed enters the steam that the water of boiler-steam dome is heated in boiler-steam dome 109 High Temperature High Pressure and goes out from the steam (vapor) outlet at top and recycle，A part returns concentration and drying steps is recycled，Another part is used for living area or process unit power generation and heat supply，Flue gas unnecessary in boiler-steam dome is discharged after being purified by flue gas purification system 110.
Wherein, shown in the table 3 in the ature of coal situation of the present embodiment such as embodiment 2, being not detected by phenol content by carrying out detection in the ash after burning in fluidized-bed combustion boiler, the phenol content in flue gas is 2.18mg/L；Phenol-containing wastewater concentrated by negative pressure evaporation after front and back concentration change such as embodiment 2 table 4 shown in, it is seen that the concentrated effect of negative pressure evaporation is very good.
The phenol-containing wastewater treatment technology of this utility model embodiment, sewage concentration adopts negative pressure evaporation technology, more more reliable than membrane separation technique, economy, thickening efficiency are high, and corollary equipment investment itself is little, floor space is little, operating cost is low, and Modern Coal-based Chemical enterprise can slitless connection.
Although illustrate and describing this utility model with specific embodiment, however it will be appreciated that may be made that when without departing substantially from spirit and scope of the present utility model many other change and amendment.It is, therefore, intended that include all such changes and modifications belonging within the scope of this utility model in the following claims.
Claims (10)
1. the process equipment of a phenol-containing wastewater, it is characterised in that include phenol-containing wastewater reservoir, filtering ponds, vacuum evaporator, dewatering dryer, blender and fluidized-bed combustion boiler；
The sidewall of described vacuum evaporator is provided with phenol-containing wastewater import, bottom is provided with dense water out, the top of blender is provided with dense water inlet, sidewall is provided with the outlet of phenol water coal slime, described dense water inlet is connected by pipeline with dense water out, described phenol-containing wastewater import is connected with described filtering ponds by pipeline, and described filtering ponds are connected by pipeline with described phenol-containing wastewater reservoir；
Another sidewall of blender is provided with middle low-order coal import for receiving from the dried middle low-order coal of dewatering dryer, and the sidewall of fluidized-bed combustion boiler is provided with phenol water coal slime import, and described phenol water coal slime import is connected with the outlet of described phenol water coal slime.
2. the process equipment of phenol-containing wastewater according to claim 1, it is characterized in that, also include boiler-steam dome, the top of described boiler-steam dome is provided with steam (vapor) outlet, the top of described vacuum evaporator is provided with the first steam inlet, and described steam (vapor) outlet is connected by pipeline with described first steam inlet.
3. the process equipment of phenol-containing wastewater according to claim 2, it is characterised in that the top of described dewatering dryer is provided with the second steam inlet, and described steam (vapor) outlet is connected by pipeline with described second steam inlet.
4. the process equipment of phenol-containing wastewater according to claim 1, it is characterised in that described vacuum evaporator is the one of which in direct contact type vaporizer or indirect contact vaporizer.
5. the process equipment of phenol-containing wastewater according to claim 4, it is characterised in that described vacuum evaporator is indirect contact vaporizer.
6. the process equipment of phenol-containing wastewater according to claim 1, it is characterised in that also include crusberscreen；Enter the described crusberscreen middle low-order coal after broken to fall in dewatering dryer.
7. the process equipment of phenol-containing wastewater according to claim 1, it is characterised in that also include material conveyer, one end of described upper material conveyer connects described phenol water coal slime import, and the other end connects the outlet of described phenol water coal slime.
8. the process equipment of phenol-containing wastewater according to claim 1, it is characterised in that described filtering ponds are the one of which in sand filter, multi-medium filtering pond.
9. the process equipment of phenol-containing wastewater according to claim 7, it is characterised in that described filtering ponds are sand filter.
10. the process equipment of phenol-containing wastewater according to claim 1, it is characterised in that also include flue gas purification system, described flue gas purification system is for purifying the flue gas cemented out from described boiler-steam dome.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105439359A (en) * | 2015-12-29 | 2016-03-30 | 北京华福工程有限公司 | Phenol-containing sewage treatment method and equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439359A (en) * | 2015-12-29 | 2016-03-30 | 北京华福工程有限公司 | Phenol-containing sewage treatment method and equipment |
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