CN102649606A - Water treatment method and device for on-line quickly purifying oil-containing industrial circulating cooling water - Google Patents
Water treatment method and device for on-line quickly purifying oil-containing industrial circulating cooling water Download PDFInfo
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Abstract
The invention relates to a water treatment method for on-line quickly purifying oil-containing industrial circulating cooling water, which comprises the following steps of: adopting an opening type circulating cooling water system, and then providing a corresponding operation method and parameters: dosage of adsorption filler, switching and regenerating, water storage capacity, main flow, bypass flow, bypass flow rate and material/water ratio according to the practical condition of the cooling water, wherein a basic operation unit device of the opening type circulating cooling water system is provided with a bypass adsorption device; the basic operation unit device comprises a water tank, a heat exchanger and a cooling water tower; and an absorbing tower with a primary filter layer and an absorbing filler thereof are arranged in the bypass adsorption device. According to the water treatment method provided by the invention, the absorbing filler is selected by aiming at a running condition and technological parameters of a specific industrial circulating cooling water system polluted by an oily organic matter; the on-line quick purifying process of the oil-containing industrial circulating cooling water system is quickly simulated in a lab; and an absorbing tower structure and an oil absorbing efficiency thereof are conveniently optimized according to the water treatment method provided by the invention. The invention also provides a water treatment device for on-line quickly purifying oil-containing industrial circulating cooling water.
Description
Technical field
The present invention relates generally to the water conditioning field of industrial circulating cooling water, refers in particular to organic simulator of oils and working method thereof in a kind of online fast purification industrial circulating cooling water system.
Background technology
Cooling water amount accounts for more than 80% of process water total amount; China from the end of the seventies from the some cover large-scale petrochemicals of external introduction device; Simultaneously supportingly introduced corresponding industrial circulating cooling water technology; After this, progressively changed the situation that process industrial (chemical industry, petrochemical complex, metallurgy, thermal power generation, nuclear power, pharmacy, electronics processing, food-processing, papermaking, brewage etc.) uses the straight-line water coolant always.Recirculating cooling water system can improve the service efficiency of water coolant when guaranteeing production equipment safety, steady running.At present, industrial circulating cooling water has been heat removal in the production engineering of the numerous process industrials of China, has guaranteed to produce operation continuously, extremely important and indispensable integral part.In fact, the industrial circulating cooling water technology is to reducing process water, and the conserve water resource has more significance.Yet the current recirculated cooling water that generally uses is the open type recirculating cooling water system.
In recent years; Because industrial circulating cooling water equipment is outmoded aging, in the system machine, pump and valve often with lubricating oil leakage in recirculated water, petroleum chemical enterprise particularly; Owing to use high sulfur-bearing and crude oil with high acid content more and more, the accident that causes the oils organism to leak into recirculated cooling water frequently takes place.The operation of oil-containing industrial circulating cooling water system band oil has a lot of harm: 1. mikrobe breeds rapidly, and the glutinous mud amount of the biology of tube wall increases sharply, and thermal resistance increases; 2. corrosion inhibiting and descaling agent lost efficacy; The water-cooled face uniform corrosion of heat exchanger and fouling aggravation: 3. biological glutinous mud, inorganic scale layer and corrosion product continuous increase; The various local corrosions of heat exchanger water-cooled face are destroyed and are quickened or the like; Will cause the overheated or interchanger of production equipment to be bored a hole fast, threaten and produce and the safety of production equipment.At present, in that field of environment engineering is little for flow, flow velocity is low and Total Water is not that the existing many mature technologies of purification of too big oil-containing industrial sewage or sewage can adopt, like gravitational separation process, coagulant sedimentation, membrane separation process and biological process etc.But these purification techniquess can not satisfy the requirement of the online fast purification of the fast oil-containing recirculated cooling water of flow big (thousands of tons/per hour), flow velocity.Enterprise adds a large amount of sterilant usually in order to suppress the rapid breeding of mikrobe in the oil-containing circulating water system, but existing sterilant is a chlorine-containing compound mostly, is easy to quicken the uniform corrosion or the pitting corrosion of interchanger.Therefore; Present most of enterprise is in order to keep the normal operation of production; Have to adopt to reduce cycles of concentration, displace the method for oil-containing water with fresh water, the big compensating method of the big row of this kind can not satisfy the production requirement except purification speed (15～30 days); Also need consume a large amount of high-quality water resourcess, in environment, discharge a large amount of oily(waste)waters simultaneously.
Summary of the invention
The present invention seeks to: but at first propose on the basis of each main operating unit of simulating the open type industrial circulating cooling water in proportion and important operation parameter, to add the bypass adsorption unit of elastic operation, form the water treatment system of online fast purification oil-containing industrial circulating cooling water.Secondly the present invention invents a kind of simple to operate to water treatment system, the scale coupling comprise first filter layer at the water treating equipment of class, be the bypass adsorption tower.
The present invention realizes through following technical scheme: the water treatment method of online fast purification oil-containing industrial circulating cooling water; The step that comprises is following: configuration bypass adsorption unit in the basic operation unit equipment of open type recirculating cooling water system, and basic operation unit equipment comprises water tank, heat exchanger, water cooling tower etc.; The adsorption tower and the adsorption stuffing thereof that have first filter layer in the bypass adsorption unit; Actual state according to water coolant provides corresponding method of operation and parameter thereof: the consumption of filler, switching and regeneration, moisture storage capacity, main flow, bypass flow, bypass flow velocity, material/water compare etc.
Bypass adsorption unit in the open type recirculating cooling water system is that two covers are connected in parallel between heat exchanger and the water cooling tower on the backwater main line; Alternately open through two bypass valves; Realize the operating function of continuous purification oil-containing recirculated water; Control the flow of bypass adsorption unit simultaneously, said bypass flow is 4%～10% of system's main flow.
It is to obtain through analogue experiment method that the actual state of water coolant provides corresponding method of operation: heat exchanger is electrically heated in the basic operation unit equipment that analogue experiment method adopts; Power 2.0～2.5KW; The heating medium of shell is a thermal oil in the heat exchanger; Temperature keeps 40～44 ℃, carries out heat exchange with water coolant in the metallic hose tube side, makes that the cooling water outlet temperature of heat exchanger is 36～40 ℃; In the described well heater metallic hose be that a kind of conductivity is high, the flange-connection stainless steel metal flexible pipe of good toughness, and with the form fix of many circles coilings in thermal oil.
Device adsorption tower structure is: by absorption tower body 10, first filter layer; 11, adsorption stuffing bed; 12, spiral seals, 13, the sintered glass baffle plate constitutes, in the absorption tower body of first filter layer is arranged is to be processed by Glass tubing; Adsorption stuffing is filled in and forms the adsorption stuffing bed between two circular sintered glass baffle plates; The adsorption stuffing bed is divided into two sections from 1/2 of length, and two sections adsorption stuffings all pass the absorption tower body in pairs with a pair of spiral seals and fix and seal, be easy to the oil suction filler filling and the cleaning of replacing and adsorption tower.
The adsorption tower of the first filter layer that has has multiple internal diameter 6～20mm, with the flow velocity of conversion recirculated water in bed of packings.Device adsorption tower first filter layer is made up of the circular Stainless Steel Wire Mesh in multiple aperture, and 80～300 orders, first filter layer equally also are divided into two sections; First filter layer is prepended to below the adsorption stuffing bed; Make suspended substance in the water, biological glutinous mud and some heterogeneous materials be filtered in advance, influence adsorption stuffing to the organic adsorption efficiency of oils in order to avoid their get into adsorption stuffing dress, first filter layer equally also is divided into two sections; And pass the absorption tower body in pairs with a pair of spiral seals and fix and seal, be convenient to change filter screen.That the described adsorption tower that has first filter layer, its internal diameter have is multiple, and (￠ 6～20mm), under certain bypass flow, change the by-pass flow flow velocity through the adsorption tower of selecting different inner diameters for use, can obtain the relation of by-pass flow flow velocity and adsorption effect.
The circular glass molten steel tower that water cooling tower is in the basic operation unit equipment of described open type recirculating cooling water system; Adopt reverse-flow gas hot swapping, heat sink material is used the modified polyvinyl chloride beading, has laterally increased convex tendon; Make the current uniform distribution disperse; Evaporation efficiency is high, and the water cooling tower inflow temperature is 36～38 ℃, and leaving water temperature(LWT) is 28～30 ℃.Water cooling tower is a cooling tower.
Described material/water can be decided according to operating parameters such as oils organism kinds, concentration, bypass flow and system's moisture storage capacity in the recirculated cooling water than the ratio that is adsorption stuffing consumption and system's moisture storage capacity.It is further characterized in that described adsorption stuffing, according to the difference of oils organism kinds in the recirculated cooling water, can be divided into 10～20 times and insert bed of packings, and to change the earlier little back of time interval value t big at every turn, presses t
N+1=(1.10～1.15)
n(n is a switching times) switches.
The water treatment method of online fast purification oil-containing industrial circulating cooling water of the present invention, the circular glass molten steel tower that water cooling tower is in the basic operation unit equipment of described open type recirculating cooling water system adopts reverse-flow gas hot swapping; Heat sink material is used the modified polyvinyl chloride beading; Laterally increased convex tendon, made the current uniform distribution disperse, evaporation efficiency is high; The water cooling tower inflow temperature is 36～38 ℃, and leaving water temperature(LWT) is 28～30 ℃.Water cooling tower is a cooling tower.
To the operation of simulator, see Fig. 3..28～30 ℃ recirculated cooling water gets into through recycle pump (2) and gets into water cooling tower (14) after well heater (5) is heated to 36～38 ℃ in the water tank (1); Flow back to water tank again; In water tank, add former water through small pump (15) with certain flow simultaneously; Keeping system's moisture storage capacity constant, thereby keep the constant and circular flow of moisture storage capacity, it is 5～8 o'clock that the cycles of concentration of treating system raises; In water tank, add quantitative oils organism and be configured to certain density oil-containing recirculated water; The bypass valve (7) that oil-containing recirculated water was opened in two parallelly connected bypass adsorption units after operation for some time is controlled bypass flow, and the adsorption stuffing layer (11) of flowing through again behind the first filter layer (10) of part oil-containing recirculated water entering bypass adsorption tower (9) elder generation through the bottom is final; Together be back to water cooling tower from the water coolant of purifying waste water with the backwater main pipe line at adsorption tower top, the saturated adsorption stuffing of oil suction gets into oily-water seperating equipment (16).
The water treatment method of online fast purification oil-containing industrial circulating cooling water of the present invention; Its further technical scheme is that the adsorption stuffing in the described adsorption tower that has a first filter layer is the saturated oil suction multiplying power>=30g/g of superfine chemical filamentary material in the oils organism of one type of high oleophylic high hydrophobicity, water-intake rate≤0.2g/g; Dynamic saturated oil suction multiplying power in water is>=0.45 times.Adsorption stuffing after oil suction is saturated is through solvent wash, through reusing more than 10 times after oily water separation and the manipulation of regeneration.Further technical scheme still is that the filling mode of described adsorption stuffing in adsorption tower has wafer-type, bulk type (mean diameter≤3cm) and load in mixture formula again.
The water treatment method of online fast purification oil-containing industrial circulating cooling water of the present invention, its further technical scheme are that described material/water can be decided according to operating parameters such as oils organism kinds, concentration, bypass flow and system's moisture storage capacity in the recirculated cooling water than the ratio that is adsorption stuffing consumption and system's moisture storage capacity.Further technical scheme is described adsorption stuffing again, according to the difference of oils organism kinds in the recirculated cooling water, can be divided into 10～20 times and insert bed of packings, and to change the earlier little back of time interval value t big at every turn, presses t
N+1=(1.10～1.15)
n(n is a switching times) switches, so that improve adsorption efficiency, this is relevant first quick and back slow with online fast purification oil-containing industrial circulating cooling water rate of adsorption.
The water treatment method of online fast purification oil-containing industrial circulating cooling water of the present invention; The water tank material is a carbon steel in the basic operation unit equipment that its further technical scheme is described open type recirculating cooling water system; Moisture storage capacity 10～40L; Further technical scheme is that system's main flow is 30～120L/h again, makes that system's moisture storage capacity and system's main flow ratio are 1/3.
The present invention can be to a certain concrete by the operational conditions of the industrial circulating cooling water system of certain oils Organic pollutants and parameter thereof; Select for use adsorption stuffing and flow through breadboard simulation; Can obtain very soon the series of processes operating parameter and with the purification rate relation so that formulate technical scheme.When adopting online fast purification oil-containing recycling technology for a concrete industrial circulating cooling water system decision that often receives the oils Organic pollutants; Its key problem is a purification speed; And purification speed is relevant with following three types of factors: the first kind is the technology operating parameter, comprises bypass flow and road flow velocity of system's moisture storage capacity, flow, by-pass flow adsorption system etc.; Second type is adsorption stuffing and performance thereof, comprises the ratio (material/water ratio) of adsorption stuffing kind, s-adsorption, filling mode and adsorption stuffing/moisture storage capacity etc.; The 3rd type is oils organism kinds and content thereof.The industrial circulating cooling water system of a reality must just can carry out conceptual design on the basis of accurately understanding purification speed and above-mentioned three types of factor relations before implementing online fast purification oil-containing recycling technology, so that water pump, pipeline, valve and pipe fitting, adsorption tower and adsorption stuffing thereof of configuration bypass adsorption unit or the like.
The present invention's " online fast purification oil-containing industrial circulating cooling water water treatment method "; Can be according to the main operating parameter of the industrial oil-containing recirculating cooling water system of a reality; Through breadboard simulation; Can obtain the relation of purification speed and above-mentioned three types of factors very soon, technical basis is provided for formulating technical scheme.
In a word; The present invention has the bypass adsorption unit of adsorption tower in parallel connection on the water return pipeline of industrial circulating cooling water system; Pack in the adsorption tower and have the adsorption stuffing of high oil absorptive function; Utilize oil-containing water Rapid Cycle mobile characteristics in industrial circulating cooling water system, part oil-containing recirculated water is through bypass, the adsorption tower of flowing through; All the time there is part oils organism continuously to be adsorbed in the adsorption stuffing; And continuously isolated circulating water system, make that the oils organism in the recirculating cooling water system continuously reduces under the constant condition of concentration ratio, reach the purpose that purifies oil-containing water (see Fig. 1. the principle schematic of online fast purification oil-containing recycling technology).Facts have proved that the circulating water system for C0D is about 150 adopts online fast purification oil-containing recycling technology can in 3～4 days, make its water quality reaching standard.
Beneficial effect of the present invention is: 1, the apparatus structure of the water treatment of online fast purification oil-containing industrial circulating cooling water of the present invention is simple, and turndown ratio is big, and the laboratory simulation cost is low, and simulate effect is good; 2, the adsorption tower of the online fast purification oil-containing industrial circulating cooling water among the present invention is simple in structure, fills, changes adsorption stuffing and first filter layer conveniently, is easy to clean.
Beneficial effect of the present invention also is; The water treatment method of the online fast purification oil-containing industrial circulating cooling water among the present invention can be to a certain concrete by the operational conditions of the industrial circulating cooling water system of certain oils Organic pollutants and parameter thereof; Select for use a kind of adsorption stuffing through breadboard simulation; Can obtain very soon the series of processes operating parameter and with the purification rate relation; So that the formulation technical scheme reduces industry and goes up the blindness of implementing online fast purification oil-containing industrial circulating cooling water.2, the water treatment of online fast purification oil-containing industrial circulating cooling water of the present invention can also be optimized the adsorption efficiency of adsorption tower structure, evaluation adsorption stuffing under given technology operating parameter; The adsorption mechanisms of research sorbing material etc. promptly can be used as a kind of research tool of studying adsorption tower and adsorption stuffing.
Description of drawings
Fig. 1. be the principle schematic of online fast purification oil-containing recirculated water of the present invention
Fig. 2. be the simulator adsorption tower structural representation of online fast purification oil-containing industrial circulating cooling water of the present invention,
Fig. 3. be the simulation system and the operation system schematic flow sheet of online fast purification oil-containing industrial circulating cooling water of the present invention
Fig. 4. different material/water than machine oil concentration in the following water with the relation of adsorption time
Fig. 5. under the different bypass flow in the water coker gas oil concentration with the relation of adsorption time
1, water tank, 2, recycle pump, 3, the main flow meter, 4, TM, 5, well heater; 6, metallic hose, 7, bypass valve, 8, the bypass flow meter, 9, the bypass adsorption tower; 10, first filter layer, 11, the adsorption stuffing bed, 12, spiral seals, 13, the sintered glass baffle plate; 14, water cooling tower, 15, small pump, 16. oily-water seperating equipments wherein 1, water tank, 9-1, bypass absorption tower body.
Specific embodiments
Below in conjunction with above-mentioned accompanying drawing the present invention is described in further detail the present invention with instance, but the present invention is not limited to these instances.
Embodiment 1
1. about operating parameters
(1). main flow 45L/h; (2). moisture storage capacity 15L; (3). bypass flow 5%; (4). bypass flow velocity 4.423 * 10
-3M/s.(5). switching time, scheme was t at interval
N+1=1.10
n
2. about the oils organism
(1) .SE 15W-40 machine oil; (2). oil-containing water initial concentration of oil 185mg/L.
3. about adsorption stuffing
(1). the adsorption stuffing performance: the saturated oil suction multiplying power in the oil is 30g/g, is 0.45g/g to dynamic saturated oil suction multiplying power oily in the water; (2). the adsorption stuffing bulk type.
4. about material/water ratio
Two kinds of material/water ratios: A is 1/1000, and B is 1/500.
5. combine shown in Figure 3; 28 ℃ recirculated cooling water gets into the water cooling tower (14) of flowing through after well heater (5) is heated to 37 ℃ through recycle pump (2) in the water tank (1), flows back to water tank again, about 29 ℃ of this moments; The 1% former water of supply simultaneously is to keep system's moisture storage capacity constant; Circular flow treats that the cycles of concentration of system is upgraded at 6 o'clock, in water tank, prepares oil-containing and follows water; A bypass valve (7) the control by-pass flow road flow that continues to open in two parallelly connected bypass adsorption units behind the operation 2h makes part oil-containing recirculated water flow into adsorption stuffing layer (11) again behind the first filter layer (10) through the bottom earlier, finally together flows into water cooling tower from adsorption tower (9) top and backwater main pipe line water coolant.In service according to the adsorption stuffing in the handover scheme replacing adsorption tower; And in time change filter screen and regularly detect concentration in the water; Obtain the relation curve of oil concentration and adsorption time in the water, analog result is shown in Fig. 4 (different material/water than machine oil concentration in the following water with the relation of adsorption time).Can know by figure; Analog result under the system operating parameters of regulation, under the oils organism and concentration thereof confirmed, after choosing adsorption stuffing and type of feed thereof shows; Material/water than big (1/500) and material/water than little (1/500) of B can both different time with water in oil purification to≤10mg/L, meet the GB50050-2007 requirement.Material/water is than big required purification short (about 22 hours), and material/water is than the little required clarification time long (about 30 hours).But material/water is more than big consumption adsorption stuffing; Cost is high; And expect/water lacks than little consumption adsorption stuffing, the adsorption stuffing consumption in the time of can selecting online fast purification oil-containing industrial circulating cooling water according to the demand of breadboard analog result and production for the leakage of oil circulating cooling system of a reality in the bypass adsorption tower.
1. about operating parameters
(1). main flow 45L/h; (2). moisture storage capacity 15L; (3). bypass flow 5%; (4). bypass flow velocity 4.423 * 10
-3M/s.(5). switching time, scheme was t at interval
N+1=1.10
n
2. about the oils organism
(1). coker gas oil; (2). oil-containing water initial concentration of oil 108.5mg/L.
3. about adsorption stuffing
(1). the adsorption stuffing performance: the saturated oil suction multiplying power in the oil is 30g/g, is 0.45g/g to dynamic saturated oil suction multiplying power oily in the water; (2). the adsorption stuffing bulk type.
4. about bypass flow
Two kinds of bypass flow: A are 5%, and B is 10%.
5. 28 ℃ recirculated cooling water gets into the water cooling tower (14) of flowing through after well heater (5) is heated to 37 ℃ through recycle pump (2) in the water tank (1); Flow back to water tank again; About 29 ℃ of this moments, the 1% former water of supply simultaneously is constant with maintenance system moisture storage capacity, circular flow; The cycles of concentration of treating system is upgraded at 6 o'clock; In water tank, prepare oil-containing and follow water, a bypass valve (7) the control by-pass flow road flow that continues to open in two parallelly connected bypass adsorption units behind the operation 2h makes part oil-containing recirculated water flow into adsorption stuffing layer (11) again behind the first filter layer (10) through the bottom earlier, finally together flows into water cooling tower from adsorption tower (9) top and backwater main pipe line water coolant.In service according to the adsorption stuffing in the handover scheme replacing adsorption tower; And in time change filter screen and regularly detect concentration in the water; Obtain the relation curve of oil concentration and adsorption time in the water, like Fig. 5. shown in, other system operating parameters is constant, under oils organism of confirming and the concentration conditions thereof, choose adsorption stuffing, material/water than and type of feed after analog result show; (10%) that the by-pass flow flow is big relatively can be known with little (5%) of by-pass flow flow; With coker gas oil concentration be 108.5mg/L contain recirculating water purification to≤when 10mg/L meets GB GB50050-2007, the former required time short (about 16 hours), latter's required time long (about 24 hours).It is high that but the by-pass line that the by-pass flow flow is big requires; And that the little by-pass line of by-pass flow flow requires is low, and the by-pass flow flow in the time of can selecting online fast purification oil-containing industrial circulating cooling water according to breadboard analog result and production demand for the leakage of oil circulating cooling system of a reality is big or small.
Embodiment 3
In conjunction with Fig. 3. shown in; The simulator that topic is stated; Except material-water ratio is 1/800, other operating parameters, oils organism and concentration, adsorption stuffing and type of feed thereof etc. are identical with example 1, the chamber of experimentizing simulation; And with its analog result with amplified recirculating cooling water system implement in-line purification and compare (all are similar for operating parameters, oil and filler etc.), significant parameter and result see table 1..
In-line purification contains the recirculated water condition relatively under two kinds of systems of table 1.
Can know that relatively under similar process operation parameter condition, the recirculating cooling water system effect after carrying out the online fast purification oil-containing of mimic recirculated water effect under the simulator and amplifying is similar.This has clear and definite directive function for the enforcement that the actual cycle cooling water system that amplifies again carries out online fast purification oil-containing recirculated water.
Claims (9)
1. the water treatment method of online fast purification oil-containing industrial circulating cooling water; It is characterized in that the step that comprises is following: adopt the open type recirculating cooling water system; Its basic operation unit equipment configuration bypass adsorption unit, basic operation unit equipment comprises water tank, heat exchanger, water cooling tower; The adsorption tower and the adsorption stuffing thereof that have first filter layer in the bypass adsorption unit; Actual state according to water coolant provides corresponding method of operation and parameter thereof: the consumption of adsorption stuffing, switching and regeneration, moisture storage capacity, main flow, bypass flow, bypass flow velocity, material/water ratio.
2. the water treatment method of online fast purification oil-containing industrial circulating cooling water according to claim 1; It is characterized in that bypass adsorption unit in the recirculating cooling water system is that two covers are connected in parallel between heat exchanger and the water cooling tower on the backwater main line; Alternately open through two bypass valves; Realize the operating function of continuous purification oil-containing recirculated water, control the flow of bypass adsorption unit simultaneously, said bypass flow is 4% ~ 10% of system's main flow.
3. the water treatment method of online fast purification oil-containing industrial circulating cooling water according to claim 2; It is to obtain through analogue experiment method that the actual state that it is characterized in that water coolant provides corresponding method of operation: analogue experiment method adopts simulation basic operation unit equipment heat exchanger; Heat exchanger adopts electrically heated; Power 2.0～2.5KW, the heating medium of shell is a thermal oil in the heat exchanger, temperature keeps 40～44 ℃; Carry out heat exchange with the water coolant in the metallic hose tube side, make that the cooling water outlet temperature of heat exchanger is 36～40 ℃; In the described well heater metallic hose be that a kind of conductivity is high, the flange-connection stainless steel metal flexible pipe of good toughness, and with the form fix of many circles coilings in thermal oil.
4. the water treatment device of online fast purification oil-containing industrial circulating cooling water according to claim 2; It is characterized in that device adsorption tower structure is: constitute by absorption tower body (10), first filter layer (11), adsorption stuffing bed (12), spiral seals (13), sintered glass baffle plate; In the absorption tower body of first filter layer is arranged is to be processed by Glass tubing; Adsorption stuffing is filled in and forms the adsorption stuffing bed between two circular sintered glass baffle plates; The adsorption stuffing bed is divided into two sections from 1/2 of length, and two sections adsorption stuffings all pass the absorption tower body in pairs with a pair of spiral seals and fix and seal, be easy to the oil suction filler filling and the cleaning of replacing and adsorption tower.
5. the water treatment device of online fast purification oil-containing industrial circulating cooling water according to claim 2, the adsorption tower of the first filter layer that it is characterized in that having has multiple internal diameter 6 ~ 20mm, with the flow velocity of conversion recirculated water in bed of packings; The adsorption tower first filter layer is made up of the circular Stainless Steel Wire Mesh in multiple aperture; Wire netting is 80 ~ 300 orders; First filter layer equally also is divided into two sections, and first filter layer is prepended to below the adsorption stuffing bed, makes suspended substance in the water, biological glutinous mud and some heterogeneous materials be filtered in advance; In order to avoid getting into the adsorption stuffing dress, they influence adsorption stuffing to the organic adsorption efficiency of oils; First filter layer equally also is divided into two sections, and passes the absorption tower body in pairs with a pair of spiral seals and fix and seal, and is convenient to change filter screen.
6. the water treatment device of online fast purification oil-containing industrial circulating cooling water according to claim 5; It is characterized in that the described adsorption tower that has first filter layer; Its internal diameter has the plurality of specifications of ￠ 6 ~ 20mm; Under certain bypass flow, change the by-pass flow flow velocity through the adsorption tower of selecting different inner diameters for use, obtain the relation of by-pass flow flow velocity and adsorption effect.
7. the water treatment device of online fast purification oil-containing industrial circulating cooling water according to claim 2 is characterized in that the circular glass molten steel tower that cooling tower is in the basic operation unit equipment of described open type recirculating cooling water system, adopts reverse-flow gas hot swapping; Heat sink material is used the modified polyvinyl chloride beading; Laterally be provided with convex tendon, make the current uniform distribution disperse, evaporation efficiency is high; The water cooling tower inflow temperature is 36～38 ℃, and leaving water temperature(LWT) is 28～30 ℃.
8. the water treatment method of online fast purification oil-containing industrial circulating cooling water according to claim 1; It is characterized in that described material/water than the ratio that is adsorption stuffing consumption and system's moisture storage capacity, decide according to operating parameters such as oils organism kinds, concentration, bypass flow and system's moisture storage capacity in the recirculated cooling water.
9. the water treatment method of online fast purification oil-containing industrial circulating cooling water according to claim 1; It is characterized in that it is further characterized in that described adsorption stuffing; Difference according to oils organism kinds in the recirculated cooling water; Can be divided into 10 ~ 20 times and insert bed of packings, to change the earlier little back of time interval value t big at every turn, presses t
N+1=(1.10 ~ 1.15)
nSwitch, n is a switching times.
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| CN102649606B (en) | 2013-11-20 |
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