CN104502532B - Chemical system circularly-cooling sea water treatment agent device for evaluating performance and method - Google Patents
Chemical system circularly-cooling sea water treatment agent device for evaluating performance and method Download PDFInfo
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- CN104502532B CN104502532B CN201410723140.1A CN201410723140A CN104502532B CN 104502532 B CN104502532 B CN 104502532B CN 201410723140 A CN201410723140 A CN 201410723140A CN 104502532 B CN104502532 B CN 104502532B
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Abstract
The present invention relates to circularly-cooling sea water processing technology field, be specifically related to a kind of chemical system circularly-cooling sea water treatment agent device for evaluating performance and method.This device includes moisturizing unit, heat exchange unit, cooling tower unit, blowdown unit, dosing unit and monitoring unit, it is characterized in that, described monitoring unit includes the corrosion monitoring unit being arranged on heat exchange unit circulating water pipework, and described heat exchange unit includes simulation monitoring heat exchanger (15), steam condenser (16) and boiler (18).Package unit can realize seawater circulation water treatment technology multiparameter (temperature, flow, pressure, pH value, electrical conductivity, corrosion rate, dirtiness resistance etc.) on-line monitoring, the Automated condtrol of multitask (dosing, blowdown, moisturizing, liquid level, water balance etc.), and research and development and commercial Application for novel circularly-cooling sea water treatment technology provide more efficiently hardware support platform.
Description
Technical field
The present invention relates to circularly-cooling sea water processing technology field, relate generally to a kind of chemical system marine circulating cooling system
Water treatment agent device for evaluating performance and method.Specifically a kind of for chemical system, at model engineering actual condition bar
Under part, circularly-cooling sea water treatment agent is carried out simulation test device and the evaluation methodology of Comprehensive Assessment.
Background technology
Marine circulating cooling system technology be alleviate China shortage of water resources, promote sustainable economic development important channel it
One.Along with the scarcity day by day of China's freshwater resources, the most urgent to the demand of seawater utilization.In recent years, China's seawater circulation
Cooling water technical research achieves significant progress, through the tackling of key scientific and technical problems of more than ten years, sets up and completes thousand, ten thousand, ten tons
Marine circulating cooling system demonstration project research, achieves large quantities of scientific achievement, it is proved that marine circulating cooling system technology is one
Environmental protection, economy, advanced new technique, by adding corrosion inhibitor of sea water, dirt dispersion agent and biocide, or assist other skills simultaneously
Art means, can effectively solve salt water cooling system pipeline, the corrosion and scaling of equipment and the impact of microorganism.These are added
The screening Evaluation Research of medicament, in addition to individually evaluating its inhibition, scale inhibition, bactericidal performance, it is often more important that simulated field to produce
Condition carries out Comprehensive evaluation and adjustment to water disposal plan.Therefore, analog is that checking is true through laboratory preliminary study
The fixed cold water process scheme indispensable link before being formally generalized to on-the-spot application, is also the link of most critical.
Summary of the invention
Present invention solves the technical problem that and be: relatively marine circulating cooling system technology is in the Development Technology level of China and market
Demand side, the most domestic relevant apparatus the most not disclosed for evaluating marine circulating cooling system system water treatment agent performance and
Standard or method.This is owing to sea water or the specific heat of concentrated seawater, heat transfer property and thermal performance have very big difference with fresh water, with
Time relative to fresh water, sea water is a kind of high salt, high chlorine and the complex system rich in multiple-microorganism, using sea water as circulatory mediator
There is higher corrosivity and bigger dirty trend, so the requirement for anticorrosion to simulation test device is higher, monitoring is analyzed
The material of equipment and performance indications also have higher requirement, and the parameter index of monitoring and control also has obvious difference with fresh water.
And for chemical system, heat exchanger material is complicated, heat transfer intensity is high, the feature that cooling tower temperature drop is big, disposal ability is strong, in conjunction with
Sea water or the particularity of concentrated seawater own, develop chemical system circularly-cooling sea water treatment agent device for evaluating performance and test side
Method, can in laboratory conditions, and more authentic and valid simulation actual operating mode, to burn into dirt and control of microorganisms etc.
Aspect carries out Comprehensive Assessment, the feasibility of inspection circularly-cooling sea water treatment technology scheme., safety quick for scientific achievement turns
It is melted into and provides basis and powerful guarantee for the engineer applied productivity.
For above-mentioned technical problem, the present invention provides a kind of and evaluates chemical system circularly-cooling sea water processing scheme and medicine
The dynamic analog test method and device of agent performance, its objective is to simulate the flow velocity of chemical industry marine circulating cooling system system for field, water
The duty parameters such as matter, metal material, heat transfer intensity and temperature, to evaluate the inhibition of sea water water treatment agent, scale inhibition and bactericidal performance,
Determine optimal water disposal plan, it is achieved to seawater corrosion, fouling, the overall merit of bacterium algae control effect.
Specifically, for the deficiencies in the prior art, the technical scheme is that
The present invention provides a kind of chemical system circularly-cooling sea water treatment agent device for evaluating performance, including moisturizing list
Unit, heat exchange unit, cooling tower unit, blowdown unit, dosing unit and monitoring unit, it is characterised in that described monitoring unit
Including the corrosion monitoring unit being arranged on heat exchange unit circulating water pipework, described heat exchange unit includes simulation monitoring heat exchange
Device 15, steam condenser 16 and boiler 18；
Wherein, moisturizing unit includes moisturizing pond 3 and collecting-tank 6；
Wherein, the heat-transfer pipe at simulation monitoring heat exchanger two ends, simulation it are provided through in described simulation monitoring heat exchanger 15
It is provided with, on monitoring heat exchanger 15 housing, the steam inlet being connected with boiler 18 venthole and is connected with steam condenser 16 one end
Steam (vapor) outlet, condensed water forms loop by the horn mouth arranged on the other end of steam condenser 16 and boiler 18 housing；
Wherein, described monitoring unit includes also including traffic monitoring unit, temperature monitoring unit and liquid level monitoring unit；
Wherein, described temperature monitoring unit includes being respectively arranged at heat exchange unit recirculated water suction line and outlet line
On import thermal bulb 14 and outlet thermal bulb 19, and be arranged at measuring from boiler 18 on simulation monitoring heat exchanger 15
The temperature sensor of vapor (steam) temperature；
Preferably, in above-mentioned device for evaluating performance, described corrosion monitoring unit includes being arranged at heat exchange unit recirculated water
Import lacing film box 10 and import corrosion probe 13 on suction line, it is arranged at going out on heat exchange unit circulating water outlet pipeline
Mouth corrosion probe 20 and outlet lacing film box 21 and corrosion tester online with the electrochemistry that described corrosion probe is connected.
Preferably, in above-mentioned device for evaluating performance, described corrosion monitoring unit also includes the corrosion being arranged in collecting-tank 6
Lacing film, and above-mentioned simulation monitoring heat exchanger 15 fall within corrosion monitoring unit.
Preferably, in above-mentioned device for evaluating performance, described cooling tower unit includes the cooling that blower fan 23 communicates with collecting-tank
Tower 24 and filler, described cooling tower is provided with thermometer hole 26 and medicine feeding hole at the bottom of tower in the one end near collecting-tank.
Preferably, in above-mentioned device for evaluating performance, described monitoring unit also includes pH monitoring unit and conductance monitoring unit.
Preferably, in above-mentioned device for evaluating performance, described traffic monitoring unit includes being arranged at heat exchange unit recirculated water
Circulating pump 8, spinner flowmeter 9, flow transmitter 11, flow control valve 12 on suction line and be arranged at steam condenser 16
Flow switch 17 on condensation-water drain pipeline.
Preferably, in above-mentioned device for evaluating performance, described temperature monitoring unit also includes being arranged at cooling tower 24 close to collection
The air damper controller 25 of one end, pond 6 and be arranged at the temperature sensor of thermometer hole 26 at the bottom of tower.
Preferably, in above-mentioned device for evaluating performance, described liquid level monitoring unit includes that the liquid level being arranged in moisturizing pond 3 passes
Sensor 4；Described pH monitoring unit includes the pH sensor 7a being arranged in collecting-tank 6；Described conductance monitoring unit includes arranging
Conductivity sensor 7b in collecting-tank 6.
Preferably, in above-mentioned device for evaluating performance, described monitoring unit also includes pressure monitoring unit, is included in heat exchange
Inlet pressure gauge on unit recirculated water turnover pipeline and delivery gauge.
Preferably, in above-mentioned device for evaluating performance, described blowdown unit includes being arranged at heat exchange unit circulating water outlet
Electric blowdown valve 22 on pipeline and the overfall 6a being arranged at collecting-tank top.
Preferably, in above-mentioned device for evaluating performance, described dosing unit includes the first dosing pump 27 being connected with moisturizing pond 3
And the second dosing pump 28 and the dosing tank being connected with cooling tower medicine feeding hole.
Preferably, in above-mentioned device for evaluating performance, described simulation monitoring heat exchanger 15 effective length be 800mm～
1200mm, the single heat transfer external diameter of simulation monitoring heat exchanger is 19mm or 25mm, and conduct heat pipe range 700mm～1100mm, heat transfer
Managing effective heat transfer length is 650mm～1050mm.
Preferably, in above-mentioned device for evaluating performance, described cooling tower 24 tower diameter is 320mm～500mm, and tower height is 1300mm
～1490mm, cooling tower 24 cooling range is 6 DEG C～15 DEG C, and described filler is filled out selected from the plastic spherical that external diameter is 20mm～50mm
Material.
Preferably, in above-mentioned device for evaluating performance, described each unit directly contacts with sea water, concentrated seawater or medicament
The material of parts is seawater corrosion resistance material or acid and alkali-resistance material.
The present invention also provides for the evaluation methodology of a kind of chemical system circularly-cooling sea water treatment agent device for evaluating performance,
It is characterized in that, comprise the steps: to open above-mentioned powder performance evaluating apparatus so that seawater circulation is via traffic monitoring list
After unit, corrosion monitoring unit, temperature monitoring unit and simulation monitoring heat exchanger, entering cooling tower unit, the sea water after cooling is again
Loop back in the collecting-tank 6 in moisturizing unit；
Wherein, detected by traffic monitoring unit and temperature monitoring unit, under conditions of making system stability, i.e. dividing
The vapor (steam) temperature in circulating seawer flow, circulating water intake temperature and simulation monitoring heat exchanger 15 is not made to be in target zone
Under the conditions of, detect, gather corrosion data, dirtiness resistance data and/or water quality testing data, rotten to evaluate medicament control sea water
Erosion, fouling and/or bacterium algae growth performance；
Wherein, selectivity moisturizing is carried out by liquid level monitoring unit.
Preferably, in above-mentioned evaluation methodology, described corrosion monitoring unit includes being arranged at heat exchange unit recirculated water entrance
Import lacing film box 10 on pipeline and import corrosion probe 13, the outlet being arranged on heat exchange unit circulating water outlet pipeline are rotten
Erosion probe 20 and outlet lacing film box 21 and corrosion tester online with the electrochemistry that described corrosion probe is connected；
Described corrosive nature monitoring by corrosion monitoring unit and simulation monitoring heat exchanger 15 heat-transfer pipe realize, including under
State the combination of any one or two kinds of in two kinds of methods:
(1) by the import corrosion probe 13 arranged on heat exchange unit circulating water pipework and outlet corrosion probe 20 and electrification
Learn online Corrosion monitoring instrument to connect, it is achieved electrochemistry on-line checking；
(2) the import lacing film box 10 on heat-transfer pipe, heat exchange unit circulating water pipework in detection simulation monitoring heat exchanger 15
With the reduced gravity situations of test piece in outlet lacing film box 21, it is achieved corrosion weight loss detects.
Preferably, in above-mentioned evaluation methodology, being provided with corrosion sample in described collecting-tank 6, the detection of described corrosive nature is also
Including following method: the reduced gravity situations of corrosion sample in detection collecting-tank 6, it is achieved corrosion weight loss detects.
Preferably, in above-mentioned evaluation methodology, described cooling tower unit includes the cooling tower 24 that blower fan 23 communicates with collecting-tank
And filler, described cooling tower 24 is provided with thermometer hole 26 and medicine feeding hole at the bottom of tower in the one end near collecting-tank 6；
Preferably, in above-mentioned evaluation methodology, described traffic monitoring unit includes being arranged at heat exchange unit recirculated water entrance
Spinner flowmeter 9, flow transmitter 11 and flow control valve 12 on pipeline；
Preferably, in above-mentioned evaluation methodology, described temperature monitoring unit also includes being arranged at cooling tower 24 close to collecting-tank 6
The air damper controller 25 of one end, it is arranged at the temperature sensor of thermometer hole 26 at the bottom of tower and is arranged on simulation monitoring heat exchanger 15
Measure the temperature sensor of the vapor (steam) temperature from boiler；
Preferably, in above-mentioned evaluation methodology, described in make circulating seawer flow, circulating water intake temperature and simulation monitoring heat exchange
Vapor (steam) temperature in device 15 is carried out by the method comprised the steps in being in target zone:
(1) temperature sensor by being installed on simulation monitoring heat exchanger 15 realizes the monitoring of vapor (steam) temperature；
(2) monitor circulating water flow by spinner flowmeter 9 and flow transmitter 11, automatically controlled by flow control valve 12
Valve opening processed；
(3) temperature sensor of thermometer hole 26 at the bottom of comparison import thermal bulb 14 records circulating water intake temperature and tower records
Tower bottom water temperature, be automatically adjusted the aperture of air damper controller 25, control cooling tower intake.
Preferably, in above-mentioned evaluation methodology, described steam is normal pressure saturated vapor, and temperature controls at 98 DEG C～102 DEG C；Institute
State cooling water flow by select heat-transfer pipe specification, keep pipe maritime interior waters flow velocity be 0.8 m/s～2m/s setup control；Described circulation
Water inlet temperature is controlled in 30 DEG C～40 DEG C.
Preferably, in above-mentioned evaluation methodology, realize dirtiness resistance by described traffic monitoring unit and temperature monitoring unit
Monitoring, this fouling thermal resistance monitoring comprises the steps:
(1) under conditions of system stability, when measuring cleaning pipe respectively by import thermal bulb 14 and outlet thermal bulb 19
Refrigerated sea water inlet temperature t 'EnterWith refrigerated sea water outlet temperature t during cleaning pipe 'Go out；Circulating water flow is measured by flow transmitter 11
Amount G；By temperature sensor measurement vapor (steam) temperature T installed on simulation monitoring heat exchanger 15；
(2), after system stability, every 2h, measured refrigerated sea water wink respectively by import thermal bulb 14 and outlet thermal bulb 19
Time inlet temperature tEnterWith refrigerated sea water instantaneous output temperature tGo out, with following formula calculate dirtiness resistance:
In formula, diFor heat-transfer pipe internal diameter in simulation monitoring heat exchanger 15, l is the having of heat-transfer pipe in simulation monitoring heat exchanger 15
Effect heat transfer length.
Preferably, in above-mentioned evaluation methodology, described evaluating apparatus also includes blowdown unit, and it includes being arranged at heat exchange list
Electric blowdown valve 22 on unit's circulating water outlet pipeline and the overfall 6a being arranged at collecting-tank top；Described monitoring unit also wraps
Include pH monitoring unit and conductance monitoring unit；
Preferably, in above-mentioned evaluation methodology, also include by the Conductivity detection unit in blowdown unit and monitoring unit real
Existing blowdown operation, it comprises the steps: to control circulating seawer electrical conductivity for (30～100) ms/cm by conductance monitoring unit
± (50～500) us/cm, controls the opening of electric blowdown valve 22, to realize blowdown.
Preferably, in above-mentioned evaluation methodology, described blowdown operation comprises the steps:
(1) external purifying sea water is by sea water reserve tank 1, is transported to moisturizing pond 3 through small pump 2, and sea water passes through filling pipe again
Moisturizing is realized to collecting-tank.Wherein it is provided with liquid level sensor 4 on moisturizing pond 3, when monitoring sea water liquid level to lower bound, small pump
Automatically turn on moisturizing, when monitoring sea water liquid level is prescribed a time limit to high, and small pump is automatically switched off and stops moisturizing；And by setting on collecting-tank
Ball-cock assembly 5 stability contorting collecting-tank 6 liquid level and moisturizing, cause collecting-tank liquid level to be increased beyond normal control when ball-cock assembly breaks down
In limited time, by collecting-tank overfall 6a draining, now the liquid level of collecting-tank varies more than normal level and sends alarm signal system；
(2) according to laboratory water disposal plan and engineering design requirements, set sea water cycles of concentration N, control cycles of concentration N
± 0.2 or N ± 0.05, the corresponding electrical conductivity setting circulating seawer controls bound, when cycles of concentration or electrical conductivity exceed the upper limit
Time, electric blowdown valve 22 automatically opens up, and when cycles of concentration or electrical conductivity arrive lower limit, electric blowdown valve 22 is automatically switched off, real
Existing automatic pollution discharge and the stability contorting of cycles of concentration.
Preferably, in above-mentioned evaluation methodology, described evaluating apparatus also includes dosing unit, and it includes being connected with moisturizing pond
First dosing pump 27, the second dosing pump 28 and the dosing tank being connected with cooling tower medicine feeding hole.
Preferably, in above-mentioned evaluation methodology, described liquid level monitoring unit includes the liquid level sensor being arranged in moisturizing pond
4；Described pH monitoring unit includes the pH sensor 7a being arranged in collecting-tank；Described conductance monitoring unit includes being arranged at and catchments
Conductivity sensor 7b in pond；
Preferably, in above-mentioned evaluation methodology, also including dosing operation, it is by the moisturizing in dosing unit, moisturizing unit
Liquid level monitoring unit and pH monitoring unit in pond 3 and monitoring unit realize, and comprise the steps:
(1) during moisturizing pond sea water liquid level limits automatic water supplement from lower bound to height, the first dosing pump presses sea water rate of water make-up
The most proportional add sea water corrosion inhibiting and descaling agent；
(2) according to sea water, circulating water quality situation and water disposal plan enforcement demand, setting circulating seawer control ph ±
0.1 or pH value ± 0.05, when detecting pH in Circulating Water and exceeding the upper limit or lower limit, the second acid of dosing pump automatic feeding or alkali；
(3) sea water bacterium algae biocide passes through manual or automatic adding equipment, periodically by the proportional throwing of circulation volume
It is added in collecting-tank 6.
Preferably, in above-mentioned evaluation methodology, also including water quality monitoring operation, it includes following any one or more than two kinds
Step:
(1) in process of the test, with described pH monitoring unit and conductance monitoring unit monitor respectively circulating seawer pH value and
Electrical conductivity；
(2) in process of the test, laboratory synchronous detecting sea water, the turbidity of circulating seawer, basicity, chloride ion, calcium ion, magnesium
Ion or iron ion content；
(3) in process of the test, the content of microorganism in periodic detection sea water, circulating seawer.
Compared with prior art, the invention has the beneficial effects as follows: package unit can in laboratory conditions, simulated industrial and commercial bank
The flow velocity of industry marine circulating cooling system engineering site, fluidised form, water quality, metal material, heat transfer intensity and cooling water outlet and inlet temperature etc.
Operating condition, comprehensively comments at aspects such as burn into dirt and control of microorganisms circularly-cooling sea water treatment technology scheme
Fixed, circulating water treatment process multiparameter (temperature, flow, pressure, pH value, electrical conductivity, corrosion rate, dirtiness resistance etc.) can be realized
On-line monitoring, the Automated condtrol of multitask (dosing, blowdown, moisturizing, liquid level, water balance etc.).Package unit is special according to sea water
Property research and development, design science, monitoring advanced technology, can serve effectively the overall merit of marine circulating cooling system technology and products thereof with
Inspection, research and development and commercial Application for novel circularly-cooling sea water treatment technology simultaneously provide more efficiently hardware support
Platform.
Accompanying drawing explanation
Fig. 1 is chemical system circularly-cooling sea water treatment agent device for evaluating performance.
In figure, 1. sea water reserve tank (the next water tank), 2. small pump, 3. moisturizing pond (upper water tank), 4. liquid level sensor,
5. ball-cock assembly, 6. collecting-tank, 6a. collecting-tank overfall, 7a.pH sensor, 7b. conductivity sensor, 8. circulating pump, 9. rotor stream
Gauge, 10. import lacing film box, 11. flow transmitters, 12. flow control valves, 13. import corrosion probes, 14. import thermal bulbs,
15. simulation monitoring heat exchangers, 16. steam condensers, 17. flow switches, 18. boilers, 19. outlet thermal bulbs, 20. outlet corrosion
Probe, 21. outlet lacing film boxes, 22. electric blowdown valve, 23. axial flow blowers, 24. mechanical force cooling columns, 25. air damper controllers, 26.
Thermometer hole, 27. first dosing pumps, 28. second dosing pumps at the bottom of tower.
Detailed description of the invention
In view of the most domestic relevant dress the most not disclosed for evaluating marine circulating cooling system system water treatment agent performance
Putting and standard or method, the present inventor, after research with keen determination, proposes embodiments of the present invention, the preferred embodiment party of one
In formula, the present invention is under laboratory specified criteria, by normal pressure saturated vapor heating simulation heat exchanger, simulated seawater circulating cooling
The on-the-spot flow velocity of water, water quality, metal material, heat transfer intensity, cooling water outlet and inlet temperature, cycles of concentration, conductivity value, pH value,
The main technologic parameters such as water treatment agent concentration, the evaluation inhibition of sea water water treatment agent, scale inhibition and bactericidal performance, determine optimal water
Processing scheme, it is achieved to seawater corrosion, fouling, the overall merit of bacterium algae control effect.
Wherein, dynamic analog device mainly includes water charging system, heat-exchange system, cooling tower systems, drainage, dosing
System, flow control system and temperature control system；In described heat-exchange system, boiler can produce normal pressure by heating
Saturated vapor；Simulation monitoring heat exchanger outer wall is incubated with excellent insulation material, and top arranges two temperature-measuring ports, and bottom arranges steaming
Vapour import and export, simulation monitoring heat exchanger effective length 800mm～1200mm, single heat transfer is designed by φ 19, φ 25, heat transfer
Pipe range 700mm～1100mm, heat-transfer pipe effectively conducts heat long 650mm～1050mm；Described cooling tower systems is by blower fan, cooling
Tower, air damper controller, collecting-tank and filler etc. are constituted, and described blower fan is explosion-proof totally-enclosed axial flow blower, and ventilation duct receives outdoor,
Being connected by of blower fan and ventilation duct integrally connects, with cooling tower upper end by being flexible coupling realization at 90 ° of elbow ventilation ducts；Cooling
Tower tower body is made by transparent organic glass, tower diameter 320mm～500mm, tower height 1300mm～1490mm, tower body arrange air inlet,
Filler turnover hand hole, handle hole, arrange 1 thermometer hole at the bottom of tower, 2～3 medicine feeding holes, in tower, spray head engineering plastic pipe is beaten
Aperture is uniformly distributed to be processed into, filler φ 20～φ 50 plastic spherical filler, filler support 316L rustless steel；Cooling tower
Cooling range 6 DEG C～15 DEG C；Described collecting-tank material is sea water resistance engineering plastics, volume about 300L, and described collecting-tank water tank needs
Burn into conductance is set and pH monitors support；Meanwhile, invention devises automatically-monitored management system and sea water water treatment agent
System can be evaluated, Automatic Dosing can be realized, automatic pollution discharge, temperature flow automatically control and water treatment agent performance evaluation.Sea water
Water treatment agent Performance Appraisal System includes corrosion monitoring system, fouling thermal resistance monitoring system and water quality detection, corrosion monitoring system
Unite and evaluated the performance of sea water water treatment agent control seawater corrosion by corrosion weight loss and electrochemistry on-line monitoring technique；Dirt heat
Resistance monitoring system, by parameters such as stability contorting circulating water intake temperature, vapor (steam) temperature, circulating water flows, calculates dirt heat
Resistance is evaluated sea water water treatment agent and is controlled the performance of sea water fouling；Water quality detection include pH value, electrical conductivity, turbidity, basicity, chlorine from
The projects such as son, calcium ion, magnesium ion and microorganism sampling detection, detected and monitoring by sea water and circulating water quality, to judge
Evaluate sea water water treatment agent and control seawater corrosion, fouling and bacterium algae growth performance.
The process utilizing said method and device to carry out seawater circulation water treatment agent performance evaluation dynamic analog test is:
In collecting-tank, sea water enters spinner flowmeter through circulating pump, enters import corrosion coupon box by flow control valve and import is rotten
Erosion high speed tester monitoring system water quality corrosion condition, subsequently into the saturated vapor produced in heat exchanger, with boiler or hot water
Carry out heat exchange, after intensification, again flow through outlet corrosion coupon box and outlet corrosion high speed tester monitoring system water quality corrosion,
The sea water of heating enters cooling tower systems, and through blower fan air blast, hot sea water flows through the exchange of seawater cooling tower filler generation heat and mass
Flowing back to collecting-tank after cooling, the moisturizing in collecting-tank is fed through automatic medicament feeding system by moisturizing pond, along with natural steaming
Sending out electrical conductivity after system water concentrates to raise, carry out blowdown by collecting-tank automatic blowdown system, sea water reserve tank passes through small pump
Moisturizing pond is fed；The tail after heat exchanger generation heat exchange is monitored in the normal pressure saturated vapor produced from boiler and simulation
Vapour, is cooled into condensed water through steam condenser and returns in boiler；Remembered in real time by instrument monitoring system and computerized control system
The parameters such as record heat exchanger tube dirtiness resistance, system water conductivity, pH value, treat that dirtiness resistance value occurs that platform continues to complete for more than two days
Test, makes water treatment agent performance evaluation and conceptual design.
In another preferred embodiment, the present invention provides a kind of chemical system circularly-cooling sea water treatment agent
Device for evaluating performance and test method, is characterized in that: device in laboratory conditions, simulates chemical industry marine circulating cooling system system
The parameters such as flow velocity, water quality, metal material, heat transfer intensity and temperature, to evaluate the inhibition of sea water water treatment agent, scale inhibition and killing livestock property
Can, evaluate and determine optimal water disposal plan.
Wherein, above-mentioned chemical system circularly-cooling sea water treatment agent device for evaluating performance and the whole dress of test method
Putting operational process is: in collecting-tank 6, sea water sequentially enters spinner flowmeter 9, import lacing film box 10, flow change through circulating pump 8
The heat transfer of simulation monitoring heat exchanger 15 is entered after sending device 11, flow control valve 12, import corrosion probe 13, import thermal bulb 14
Pipe, heat-transfer pipe carries out heat exchange with the normal pressure saturated vapor of generation in boiler 18, and sea water flows out simulation monitoring heat exchanger after heating up
15 enter entrance sea water mechanical force cooling column 24 after outlet thermal bulb 19, outlet corrosion probe 20, outlet lacing film box 21, through blower fan 23
Convulsion, hot sea water flows through after the exchange of sea water mechanical force cooling column 24 filler generation heat and mass cools and flows back to collecting-tank 6, described
The normal pressure saturated vapor produced from boiler 18 there is the tail vapour after heat exchange with simulation monitoring heat exchanger 15, condense through steam
Device 16 is cooled into condensed water and returns in boiler 18；Moisturizing in collecting-tank 6 is fed by moisturizing pond 3, and sea water reserve tank 1 leads to
Cross small pump 2 and moisturizing pond 3 is carried out moisturizing；
Wherein, described chemical system circularly-cooling sea water treatment agent device for evaluating performance includes that water charging system, heat are handed over
Change system, cooling tower systems, drainage, medicine system, flow control system and temperature control system, it is characterized in that:
(1) water charging system: by sea water reserve tank 1, small pump 2, moisturizing pond 3, liquid level sensor 4, ball-cock assembly 5, collecting-tank 6
Constitute with moisturizing pipeline etc., control moisturizing pond 3 and collecting-tank 6 liquid level, it is achieved automatic water supplement；
(2) heat-exchange system: boiler 18 produces normal pressure saturated vapor；Simulation monitoring heat exchanger 15 effective length 800mm
～1200mm, the single heat transfer of simulation monitoring heat exchanger 15 is designed by φ 19, φ 25, and conduct heat pipe range 700mm～1100mm, passes
Heat pipe effectively conducts heat long 650mm～1050mm；Boiler 18 and simulation monitoring heat exchanger 15 outer wall are incubated with excellent insulation material.
(3) cooling tower systems: be made up of blower fan 23, mechanical force cooling column 24, air damper controller 25, collecting-tank 6 and filler etc.,
Blower fan 23 is explosion-proof totally-enclosed axial flow blower, and ventilation duct receives outdoor；Sea water mechanical force cooling column 24 tower body is by transparent organic glass
Making, tower diameter 320mm～450mm, tower height 1300mm～1490mm, tower body arranges air inlet, filler turnover hand hole, handle hole,
Arranging 1 thermometer hole, 2～3 medicine feeding holes at the bottom of tower, in tower, spray head engineering plastic pipe spiles and is uniformly distributed processing system
Becoming, filler φ 20～φ 50 plastic spherical filler, filler support is with 316 L rustless steels；Cooling tower cooling range 6 DEG C～15
℃；
(4) drainage: by sea water conductivity sensor 7b and instrument, electric blowdown valve 22, the overfall of collecting-tank 6 and pipe
Lines etc. form, and after concentrating along with natural evaporation system sea water, electrical conductivity raises, and are automatically controlled by monitoring circulating seawer electrical conductivity
Electric blowdown valve 22 opening, it is achieved blowdown controls rate of water make-up, blowdown flow rate and cycles of concentration；
(5) medicine system: by sea water reserve tank 1, small pump 2, moisturizing pond 3, liquid level sensor 4, pH sensor 7, first
Dosing pump the 27, second dosing pump 28, dosing tank and pipeline etc. are constituted, and control moisturizing pond 3 liquid level and pH in Circulating Water, it is achieved medicament
Automatic feeding；
(6) flow control system: by groups such as circulating pump 8, spinner flowmeter 9, flow transmitter 11, flow control valves 12
Becoming, set test flow, monitor circulating water flow by spinner flowmeter 9, flow transmitter 11, flow control valve 12 is controlled automatically
Valve opening processed, flow-control error ± (1%～2%) in；
(7) temperature control system: by the temperature sensor of thermometer hole 26 at the bottom of air damper controller 25, import thermal bulb 14 and tower
And instrument etc. is constituted, sets circulating water intake temperature certain value as 30 DEG C～40 DEG C scopes, control error in ± 0.2 DEG C, supervise
Survey comparison circulating water intake and tower bottom water temperature, be automatically adjusted air damper controller 25 aperture, control cooling tower intake, it is achieved circulation
Water inlet temperature stabilization controls.
Above-mentioned chemical system circularly-cooling sea water treatment agent device for evaluating performance includes water charging system, heat exchange series
System, cooling tower systems, drainage, medicine system, flow control system and temperature control system, is characterized in that, described is each
System all selects seawater corrosion resistance material, acid and alkali-resistance material with sea water, concentrated seawater, the direct contact component of medicament；Described
Each system connects PLC and computer management control system, it is achieved system operational management integrating control.
Above-mentioned chemical system circularly-cooling sea water treatment agent device for evaluating performance is cold by simulating actual seawater circulation
But system condition, Monitoring and Controlling process operation process, evaluate sea water water treatment agent and control seawater corrosion, fouling, the growth of bacterium algae
Performance, designs water disposal plan；
In above-mentioned chemical system circularly-cooling sea water treatment agent device for evaluating performance, sea water water treatment agent performance is commented
Valency system includes corrosion monitoring system, fouling thermal resistance monitoring system and water quality detection, specific features:
(1) corrosion monitoring system is by the corrosion sample (test piece) imported and exported in lacing film box (10 and 21) and collecting-tank 6, simulation
The compositions such as heat-transfer pipe, import and export corrosion probe (13 and 20) and the online corrosion tester of electrochemistry in monitoring heat exchanger 15 are logical
Excessive erosion is weightless and electrochemistry on-line monitoring technique is evaluated sea water water treatment agent and controlled the performance of seawater corrosion；
(2) fouling thermal resistance monitoring system is passed by the temperature imported and exported on thermal bulb (14 and 19) and simulation monitoring heat exchanger 15
Sensor and instrument, flow transmitter 11 and flow control valve 12 etc. form, by stability contorting circulating water intake temperature, steam temperature
The parameters such as degree, circulating water flow, calculate dirtiness resistance and evaluate the performance of sea water water treatment agent control sea water fouling, wherein
The computing formula of dirtiness resistance:
In formula:
The instantaneous dirtiness resistance of rsj, unit is square metre degree Celsius every watt of (m2·℃/W)；
G refrigerated sea water flow, unit is kilogram per hour (kg/h)；
tEnterThe instantaneous inlet temperature of refrigerated sea water, unit is degree Celsius (DEG C)；
tGo outRefrigerated sea water instantaneous output temperature, unit is degree Celsius (DEG C)；
t'EnterRefrigerated sea water inlet temperature during cleaning pipe, unit is degree Celsius (DEG C)；
t'Go outRefrigerated sea water outlet temperature during cleaning pipe, unit is degree Celsius (DEG C)；
T vapor (steam) temperature, unit is degree Celsius (DEG C)；
diDevelopmental tube internal diameter, unit is rice (m)；
The effective heat transfer length of l developmental tube, unit is rice (m).
(3) water quality detection includes the items such as pH value, electrical conductivity, turbidity, basicity, chloride ion, calcium ion, magnesium ion, iron ion
Mesh and microorganism sampling detection, detected and monitoring by sea water and circulating water quality, to judge to evaluate sea water water treatment agent control
Seawater corrosion processed, fouling and bacterium algae growth performance.
Additionally, chemical system circularly-cooling sea water treatment agent device for evaluating performance of the present invention can be used for actual prison
Surveying, it is possible to as analog, simulate the cooling system operating mode of circularly-cooling sea water in different chemical systems, detection controls
Process operation process, evaluates sea water water treatment agent performance.
Further illustrate chemical system circularly-cooling sea water of the present invention below by specific embodiment and process medicine
Agent device for evaluating performance and test method.
In the following embodiments, each reagent used and the model of instrument and source are as shown in Table 1 and Table 2.
Agents useful for same and type information table in table 1 embodiment
Device therefor information table in table 2 embodiment
| Device name | Model/specification/material | Producer/supplier |
| Liquid level sensor | Pressure type SW type, 316L | Tianjin Blue-Cross water processes company |
| Ball-cock assembly | Maximum inflow-rate of water turbine 50L/h, PVC | Tianjin Blue-Cross water processes company |
| PH sensor | GF, range 0～14 | Tianjin Blue-Cross water processes company |
| Conductivity sensor | GF, range 0～199ms/cm | Tianjin Blue-Cross water processes company |
| Flow transmitter | 0～3m3/ h, tetrafluoro serves as a contrast, Ti electrode | Tianjin Blue-Cross water processes company |
| Flow control valve | 0～3m3/ h, 316L | Tianjin Blue-Cross water processes company |
| Corrosion probe | Three-electrode system | Tianjin Blue-Cross water processes company |
| The online corrosion tester of electrochemistry | Multi-channel type electrochemical workstation | Tianjin Blue-Cross water processes company |
Embodiment one
A kind of preferably chemical system circularly-cooling sea water treatment agent device for evaluating performance such as Fig. 1 institute of the present invention
Showing, described device includes following unit:
(1) moisturizing unit: include sea water reserve tank 1, small pump 2, moisturizing pond 3, ball-cock assembly 5, collecting-tank 6 and filling pipe
Line.Moisturizing pipeline is sequentially connected with sea water reserve tank, small pump, moisturizing pond and collecting-tank, and ball-cock assembly is installed in collecting-tank.
Described moisturizing pond material is PVC, and support and panel material are 304 rustless steels, and does plastic-blasting process；Described collecting-tank
6 materials are PVC, and described collecting-tank, the relevant metal support structure of experiment porch use 304 rustless steels；Support materials is used
304 rustless steels, thickness is triangular steel or the square tube of 1.2.
(2) heat exchange unit: include simulation monitoring heat exchanger 15, steam condenser 16 and boiler 18.Described simulation monitoring
Heat exchanger includes housing and runs through the heat-transfer pipe of housing, is respectively arranged with recirculated water at the axial two ends of simulation monitoring heat exchanger
Inlet and outlet, is provided with two temperature-measuring ports at tube wall top, is provided with air intake and the venthole of steam in tube wall bottom.Institute
Stating steam inlet to communicate with boiler, described steam (vapor) outlet condenser cool with steam communicates, and vapours forms condensed water after cooling and returns
To boiler.
Wherein, boiler and simulation monitoring heat exchanger outer wall asbestos insulation material are incubated, simulation monitoring heat exchanger (diameter
70mm, 304 rustless steels) effective length is 1200mm, a diameter of 19mm of single heat transfer, wall thickness 2mm, heat-transfer pipe is a length of
1000mm, the effective heat transfer length of single heat transfer is 900mm；
Wherein, boiler size is: diameter 480mm, long 900mm, high 680mm, and material is 304 rustless steels；Steam condenser
A size of: diameter 70mm, long 850mm, material is 304 rustless steels.
(3) cooling tower unit: include axial flow blower 23, mechanical force cooling column 24 and filler.The coolant outlet of cooling tower with
Collecting-tank communicates.
Described blower fan (explosion-proof axial flow fan, 3600m3/ h) it is arranged at cooling tower top, the tower diameter 320mm of cooling tower, tower
High 1470mm, tower body arranges air inlet, filler turnover hand hole, handle hole, arranges 1 thermometer hole at the bottom of tower, and 3 medicine feeding holes, in tower
Spray head material is PVC, spiles to be uniformly distributed and is processed into, filler φ 50PVC plastic spherical filler, and filler support is used
316L rustless steel；Cooling tower cooling range 6 DEG C～15 DEG C；
(4) blowdown unit: include electric blowdown valve 22, the overfall 6a of collecting-tank and pipeline.Described conductivity sensor 7b
Being arranged in collecting-tank 6, described electric blowdown valve 22 is arranged on heat-exchange system outlet line.
(5) dosing unit: include first dosing pump the 27, second dosing pump 28, dosing tank and pipeline.Described first dosing pump
Being connected with dosing tank with the second dosing pump entrance, the first dosing pump outlet is passed through moisturizing pond, and the second dosing pump outlet is passed through cooling
The medicine feeding hole of tower.
(6) monitoring unit: include traffic monitoring unit, temperature monitoring unit, corrosion monitoring unit, liquid level monitoring unit,
PH monitoring unit and conductance monitoring unit.
(i) traffic monitoring unit: include circulating pump 8, spinner flowmeter 9, flow transmitter 11, flow control valve 12 and set
It is placed in the flow switch 17 on steam condenser 16 condensation-water drain pipeline.Wherein, described circulating pump is connected with collecting-tank, described
Spinner flowmeter, flow transmitter and flow control valve are sequentially arranged at the pipeline between circulating pump and simulation monitoring heat exchanger
On.
Set test flow, detect circulating water flow, flow control valve 12 by spinner flowmeter 9, flow transmitter 11
Autocontrol valve aperture, flow-control error ± (1%～2%) in.
(ii) temperature monitoring unit: include thermometric at the bottom of air damper controller 25, import thermal bulb 14, outlet thermal bulb 19, tower
The temperature sensor in hole 26 and instrument, and it is arranged at the temperature sensor on simulation monitoring heat exchanger 15.Wherein, described air door
Controller 25 is installed on cooling tower one end close to collecting-tank, and described temperature sensor is installed on the thermometer hole 26 at the bottom of cooling tower
In, described import thermal bulb 14 and outlet thermal bulb 19 are respectively arranged in the pipeline that simulation monitoring heat exchanger recirculated water is imported and exported
On.
(iii) corrosion monitoring unit: be provided with import lacing film box 10 between spinner flowmeter 9 and flow transmitter 11,
Import corrosion probe 13, outlet thermal bulb 19 and cooling tower top spray it is provided with between flow control valve 12 and import thermal bulb 14
Drench and between head, be disposed with outlet corrosion probe 20 and outlet lacing film box 21.
(iv) liquid level monitoring unit: include the liquid level sensor 4 being arranged in moisturizing pond 3.
(v) pH monitoring unit: include the pH sensor 7a being arranged in collecting-tank 6.
(vi) conductance monitoring unit: include the conductivity sensor 7b being arranged in collecting-tank 6.
The process of the test of chemical system evaluating apparatus is: in collecting-tank 6, sea water sequentially enters spinner through circulating pump 8
Enter after meter 9, import lacing film box 10, flow transmitter 11, flow control valve 12, import corrosion probe 13, import thermal bulb 14
The heat-transfer pipe of simulation monitoring heat exchanger 15, heat-transfer pipe carries out heat exchange, sea water liter with the normal pressure saturated vapor of generation in boiler 18
Sea water is entered cold after flowing out simulation heat exchanger 15 entrance outlet thermal bulb 19, outlet corrosion probe 20, outlet lacing film box 21 after temperature
But tower 24, through blower fan 23 convulsion, hot sea water flows through after the exchange of seawater cooling tower filler generation heat and mass cools and flows back to collection
Pond, there is the tail gas after heat exchange, warp in the described normal pressure saturated vapor produced from boiler and simulation monitoring heat exchanger 15
Steam condenser 16 is cooled into condensed water and returns in boiler.Wherein, the moisturizing in collecting-tank 6 is fed by moisturizing pond 3, sea
Water reserve tank 1 carries out moisturizing by small pump to moisturizing pond.
Embodiment two
Described in embodiment one, chemical system circularly-cooling sea water treatment agent device for evaluating performance can carry out corrosion monitoring,
Concretely comprise the following steps:
(1) ordinary carbon steel test piece 6 (50mm × 25mm × 2mm) placed respectively by import lacing film box and outlet lacing film box, choosing
Take North SinKiang, Tianjin sea water (water quality is shown in Table 3) and carry out moisturizing, first ON cycle water pump, be then turned on boiler and steam condenser；
North SinKiang, table 3 Tianjin seawater quality data
| Analysis project | PH value | Electrical conductivity (μ s/cm) | M basicity (mg/L) | Turbidity (mg/L) |
| Numerical value | 7.31 | 3.99×104 | 123 | 13 |
| Analysis project | Ca2+(mg/L) | Mg2+(mg/L) | SO4 2-(mg/L) | Cl-(mg/L) |
| Numerical value | 380 | 1161 | 2478 | 17403 |
(2) control that vapor (steam) temperature reaches (100 ± 0.2) DEG C, cooling water flow reaches (600 ± 6) kg/h and inlet water temperature
Reach (32 ± 0.2) DEG C scope so that system stability；
(3) water collecting pool volume is 300L, pilot system volume 200L, controls moisturizing pond and collecting-tank liquid level, it is achieved automatically
Moisturizing.After concentrating along with natural evaporation system sea water, electrical conductivity raises, and automatically controls electronic by detection circulating seawer electrical conductivity
Blowoff valve opening, it is achieved blowdown controls rate of water make-up, blowdown flow rate and cycles of concentration.EXPERIMENTAL DESIGN cycles of concentration is 2.0 ±
0.2, controlling circulating seawer electrical conductivity is that 80ms/cm ± 200us/cm realizes blowdown control rate of water make-up, blowdown flow rate and cycles of concentration.
The each automatic water supplement in moisturizing pond is 45L, and accumulation reaches 200L, and recirculated water cycles of concentration basically reaches 2.0, and system enters normal fortune
Row order section.From former sea water to concentrated, stable running, the data of other supervising devices are as shown in table 4:
Technological parameter when table 4 embodiment two chemical system is stablized
| Mensuration project | Concentration operation starts | Reach cycles of concentration |
| PH value (7a) | 7.36 | 8.34 |
| Electrical conductivity (7b) | 39ms/cm | 80ms/cm |
| Spinner flowmeter 9 measured value | 603kg/h | 601kg/h |
| Flow transmitter 11 measured value | 603kg/h | 600kg/h |
| Import corrosion probe 13 measured value | 0.032mm/a | 0.030mm/a |
| Import thermal bulb 14 measured value | 31.92℃ | 32.02℃ |
| Outlet thermal bulb 19 measured value | 44.36℃ | 44.32℃ |
| Outlet corrosion probe 20 measured value | 0.044mm/a | 0.035mm/a |
| Cycles of concentration | 1.0 | 2.02 |
| Vapor (steam) temperature | 99.96℃ | 100.00℃ |
(4), in process of the test, moisturizing pit level and pH in Circulating Water are controlled, it is achieved medicament automatic feeding.At moisturizing Chi Hai
During water liquid level limits automatic water supplement from lower bound to height, the first dosing pump adds by sea water rate of water make-up 45L is the most proportional every time
45ml SW103 type corrosion inhibitor of sea water (table 1)；Setup control circulating seawer pH value is 8.3 ± 0.1, when detection pH in Circulating Water surpasses
Cross 8.4 second dosing pump automatic feeding acid, when detection pH in Circulating Water is automatically switched off less than 8.2 second dosing pumps.Treat that system is steady
Surely run after 15 days, corrosion weight loss record the rate of corrosion of test piece in import lacing film box and outlet lacing film box be respectively 0.028mm/a,
0.036mm/a, the rate of corrosion of the heat-transfer pipe of simulation monitoring heat exchanger is 0.047mm/a.
Embodiment three
Described in embodiment one, chemical system circularly-cooling sea water treatment agent device for evaluating performance can carry out dirtiness resistance
Monitoring, concretely comprises the following steps:
(1) installing 1 a diameter of 19mm at simulation monitoring heat exchanger, the carbon steel pipe of wall thickness 2mm, effective heat transfer length is
900mm, chooses North SinKiang, Tianjin sea water (water quality is shown in Table 3) and carries out moisturizing, ON cycle water pump, carry out the throwing of anti-incrustation corrosion inhibitor basis
Add, be then turned on boiler and steam condenser；
(2) control that vapor (steam) temperature reaches (100 ± 0.2) DEG C, cooling water flow reaches (600 ± 6) kg/h and inlet water temperature
Reach (32 ± 0.2) DEG C scope so that system stability；
(3) pilot system volume 200L, controls moisturizing pond and collecting-tank liquid level, it is achieved automatic water supplement.Along with natural evaporation
After system sea water concentrates, electrical conductivity raises, and automatically controls electronic blowoff valve opening by detection circulating seawer electrical conductivity, real
Existing blowdown controls rate of water make-up, blowdown flow rate and cycles of concentration.EXPERIMENTAL DESIGN cycles of concentration is 2.0 ± 0.2, controls circulating seawer conductance
Rate is that 80ms/cm ± 200us/cm realizes blowdown control rate of water make-up, blowdown flow rate and cycles of concentration.The each automatic water supplement in moisturizing pond is
45L, accumulation reaches 200L, and recirculated water cycles of concentration basically reaches 2.0, and system enters normal operating phase.From former sea water to dense
During contracting stable operation, the data of other supervising devices are as shown in table 5:
Technological parameter when table 5 embodiment three chemical system is stablized
| Mensuration project | Concentration operation starts | Reach cycles of concentration |
| PH value (7a) | 7.35 | 8.32 |
| Electrical conductivity (7b) | 41ms/cm | 81ms/cm |
| Spinner flowmeter 9 measured value | 600kg/h | 600kg/h |
| Flow transmitter 11 measured value | 596kg/h | 604kg/h |
| Import thermal bulb 14 measured value | 31.92 | 32.00 |
| Outlet thermal bulb 19 measured value | 44.36 | 44.32 |
| Cycles of concentration | 1.01 | 2.04 |
| Vapor (steam) temperature | 99.92℃ | 100.00℃ |
(4), in process of the test, moisturizing pit level and pH in Circulating Water are controlled, it is achieved medicament automatic feeding.At moisturizing Chi Hai
During water liquid level limits automatic water supplement from lower bound to height, the first dosing pump adds by sea water rate of water make-up 45L is the most proportional every time
45ml SC210 sea water dirt dispersion agent (table 1)；Setup control circulating seawer pH value is 8.3 ± 0.1, when detection pH in Circulating Water
More than 8.4 second dosing pump automatic feeding acid, when detection pH in Circulating Water is automatically switched off less than 8.2 second dosing pumps.Treat system
After stable operation, every 2h monitors collection one-time process parameter automatically, detects seawater circulation by the computing formula of above-mentioned dirtiness resistance
The instantaneous dirtiness resistance of cooling water over time, occurs stopping test after platform was more than 2 days until curve, measures year dirt heat
Resistance is 0.72 × 10-4m2·℃/W。
Embodiment four
Described in embodiment one, chemical system circularly-cooling sea water treatment agent device for evaluating performance can carry out water quality detection,
Concretely comprise the following steps:
(1) technological operation and system operational parameters are with embodiment two and embodiment three；
(2), in process of the test, moisturizing pit level and pH in Circulating Water are controlled, it is achieved corrosion inhibiter, the automatic feeding of antisludging agent.
During moisturizing pond sea water liquid level limits automatic water supplement from lower bound to height, it is automatic that the first dosing pump presses sea water rate of water make-up 45L every time
The proportional sea water corrosion inhibiting and descaling agent (table 1) adding 45ml SW103 type and SC210 mixing；Setup control circulating seawer pH value is
8.3 ± 0.1, when detection pH in Circulating Water is more than 8.4 second dosing pump automatic feeding acid, when detection pH in Circulating Water is less than 8.2
Second dosing pump is automatically switched off；Biocide SW303 basis before concentrating operation adds based on system volume 200L, dosage
15mg/L, arrives cycles of concentration normal operating phase, based on system volume 200L, dosage 15mg/L, within every 3 days, adds 1 time, no
In the same stage, biocide is the most directly added in collecting-tank.
Test typical water quality when (former sea water) and arrival cycles of concentration (2.0 ± 0.2) are properly functioning before concentrating operation
Testing result is shown in Table 6.
Typical water quality detection result when table 6 embodiment four chemical system runs
| Analysis project | Concentrate before running (former sea water) | Arrive cycles of concentration normal operational cycle water | With reference to detection method |
| PH value | 7.38 | 8.3 | GB 17378.4 |
| Electrical conductivity, μ s/cm | 3.9×104 | 7.72×104 | GB/T 6908—2008 |
| Turbidity, FTU | ＜ 10 | ＜ 10 | GB 17378.4 |
| Chlorine [c (Cl-)], mg/L | 17400 | 34500 | GB 17378.4 |
| Methyl orange alkalinity, mg/L | 120 | 234 | GB 17378.4 |
| Phenolphthalein alkalinity, mg/L | 0 | 0 | GB 17378.4 |
| Calcium [c (Ca2+)], mg/L | 380 | 752 | GB/T 15452—1995 |
| Magnesium [c (Mg2+)], mg/L | 1160 | 2330 | GB/T 15452—1995 |
| Total ferrum, mg/L | ＜ 0.5 | ＜ 1.0 | HG/T 3539—2003 |
| Heterotrophic bacteria, cfu/ml | 1.9×105 | ＜ 5 × 105 | GB/T 14643.1-2009 |
Detection corrosive nature and scale-inhibiting properties simultaneously, result shows: the corruption of test piece in import lacing film box and outlet lacing film box
Erosion rate is respectively 0.030mm/a, 0.034mm/a, and annual fouling resistance is 0.70 × 10-4m2·℃/W。
Meanwhile, find corrosion rate, dirtiness resistance and water quality detection index are carried out individual event through substantial amounts of checking test
Indexs measure or the most full item Indexs measure, testing result error is less, specific as follows:
(1) corrosion rate detection error: under the same terms, take the arithmetic mean of instantaneous value of more than three sample parallel determinations
As measurement result, the relative deviation of single parallel determinations and arithmetic mean of instantaneous value less than arithmetic mean of instantaneous value ± 10%；
Single developmental tube to weigh for three times, the data such as dimensional measurement calculate measurement result, each measurement result and three arithmetic mean of instantaneous values
Relative deviation less than arithmetic mean of instantaneous value ± 5%.
(2) dirtiness resistance detection error: under the same terms, take the arithmetic mean of instantaneous value of more than three contrast verification result of the tests
As measurement result, the relative deviation of single checking measurement result and arithmetic mean of instantaneous value less than arithmetic mean of instantaneous value ± 10%；
Automatically compared with the dirtiness resistance calculated with the computer system software result gathering data calculating artificial with utilization, absolute error
Less than 0.02m2·℃/W。
(3) water quality detection error: conventional water quality detection project all can reach the range of error that respective standard requires.Wherein follow
The pH value continuous on-line monitoring result of ring water is less than 0.1 with laboratory Analysis Results of Water Quality error, the continuous on-line monitoring of electrical conductivity
Output control recirculated water cycles of concentration, error is less than 0.05.
Thus illustrating, Integral mobile circularly-cooling sea water treatment agent device for evaluating performance of the present invention detects
Sensitive, error is little, and evaluation methodology science is feasible.
Claims (25)
1. a chemical system circularly-cooling sea water treatment agent device for evaluating performance, including moisturizing unit, heat exchange unit,
Cooling tower unit, blowdown unit, dosing unit and monitoring unit, it is characterised in that described monitoring unit includes being arranged at heat friendship
Changing the corrosion monitoring unit on unit circulating water pipework, described heat exchange unit includes that simulation monitoring heat exchanger (15), steam are cold
Condenser (16) and boiler (18)；
Wherein, moisturizing unit includes moisturizing pond (3) and collecting-tank (6)；
Wherein, the heat-transfer pipe at simulation monitoring heat exchanger two ends, simulation prison it are provided through in described simulation monitoring heat exchanger (15)
Survey be provided with on heat exchanger (15) housing the steam inlet being connected with boiler (18) venthole and with steam condenser (16) one end
The steam (vapor) outlet connected, condensed water is by the horn mouth arranged on the other end of steam condenser (16) and boiler (18) housing
Form loop；
Wherein, described monitoring unit also includes traffic monitoring unit, temperature monitoring unit and liquid level monitoring unit；
Wherein, described temperature monitoring unit includes being respectively arranged on heat exchange unit recirculated water suction line and outlet line
Import thermal bulb (14) and outlet thermal bulb (19), and it is arranged at the mensuration in simulation monitoring heat exchanger (15) from boiler
(18) temperature sensor of vapor (steam) temperature；
Wherein, described corrosion monitoring unit includes import lacing film box (10) being arranged on heat exchange unit recirculated water suction line
The outlet corrosion probe (20) and the outlet that with import corrosion probe (13), are arranged on heat exchange unit circulating water outlet pipeline are hung
Film magazine (21) and corrosion tester online with the electrochemistry that described corrosion probe is connected；Described corrosion monitoring unit also includes arranging
Corrosion coupon in collecting-tank (6)；
Wherein, described cooling tower unit includes cooling tower (24) and filler, the described cooling tower that blower fan (23) communicates with collecting-tank
(24) one end near collecting-tank (6) is provided with thermometer hole at the bottom of tower (26) and medicine feeding hole；
Described dosing unit includes the first dosing pump (27) being connected with moisturizing pond (3), with being used for that cooling tower medicine feeding hole is connected
Add the second dosing pump (28) and the dosing tank of acid or alkali.
Device for evaluating performance the most according to claim 1, wherein, described traffic monitoring unit includes being arranged at heat exchange list
Unit recirculated water suction line on circulating pump (8), spinner flowmeter (9), flow transmitter (11), flow control valve (12) and set
The flow switch (17) being placed on steam condenser (16) condensation-water drain pipeline.
Device for evaluating performance the most according to claim 1, wherein, described temperature monitoring unit also includes being arranged at cooling tower
(24) close to the air damper controller (25) of collecting-tank (6) one end be arranged at the temperature sensor of thermometer hole at the bottom of tower (26).
Device for evaluating performance the most according to claim 2, wherein, described temperature monitoring unit also includes being arranged at cooling tower
(24) close to the air damper controller (25) of collecting-tank (6) one end be arranged at the temperature sensor of thermometer hole at the bottom of tower (26).
Device for evaluating performance the most according to claim 1, wherein, described monitoring unit also includes pH monitoring unit and conductance
Monitoring unit；Described liquid level monitoring unit includes the liquid level sensor (4) being arranged in moisturizing pond (3)；Described pH monitoring unit
Including the pH sensor (7a) being arranged in collecting-tank (6)；Described conductance monitoring unit includes the electricity being arranged in collecting-tank (6)
Derivative sensor (7b).
Device for evaluating performance the most according to claim 2, wherein, described monitoring unit also includes pH monitoring unit and conductance
Monitoring unit；Described liquid level monitoring unit includes the liquid level sensor (4) being arranged in moisturizing pond (3)；Described pH monitoring unit
Including the pH sensor (7a) being arranged in collecting-tank (6)；Described conductance monitoring unit includes the electricity being arranged in collecting-tank (6)
Derivative sensor (7b).
Device for evaluating performance the most according to claim 3, wherein, described monitoring unit also includes pH monitoring unit and conductance
Monitoring unit；Described liquid level monitoring unit includes the liquid level sensor (4) being arranged in moisturizing pond (3)；Described pH monitoring unit
Including the pH sensor (7a) being arranged in collecting-tank (6)；Described conductance monitoring unit includes the electricity being arranged in collecting-tank (6)
Derivative sensor (7b).
Device for evaluating performance the most according to claim 4, wherein, described monitoring unit also includes pH monitoring unit and conductance
Monitoring unit；Described liquid level monitoring unit includes the liquid level sensor (4) being arranged in moisturizing pond (3)；Described pH monitoring unit
Including the pH sensor (7a) being arranged in collecting-tank (6)；Described conductance monitoring unit includes the electricity being arranged in collecting-tank (6)
Derivative sensor (7b).
9. according to the device for evaluating performance described in any one of claim 1-8, wherein, described blowdown unit includes being arranged at heat friendship
Change the electric blowdown valve (22) on unit circulating water outlet pipeline and be arranged at the overfall (6a) on collecting-tank top.
10. according to the device for evaluating performance described in any one of claim 1-8, wherein, described simulation monitoring heat exchanger (15) has
Imitating a length of 800mm～1200mm, the single heat transfer external diameter of simulation monitoring heat exchanger (15) is 19mm or 25mm, and conduct heat pipe range
700mm～1100mm, the effective heat transfer length of heat-transfer pipe is 650mm～1050mm.
11. device for evaluating performance according to claim 9, wherein, described simulation monitoring heat exchanger (15) effective length is
800mm～1200mm, simulation monitoring heat exchanger (15) single heat transfer external diameter be 19mm or 25mm, heat transfer pipe range 700mm～
1100mm, the effective heat transfer length of heat-transfer pipe is 650mm～1050mm.
12. according to the device for evaluating performance described in any one of claim 1-8, and wherein, described cooling tower (24) tower diameter is 320mm
～500mm, tower height is 1300mm～1490mm, and cooling tower (24) cooling range is 6 DEG C～15 DEG C, and described filler selected from external diameter is
The plastic spherical filler of 20mm～50mm.
13. device for evaluating performance according to claim 10, wherein, described cooling tower (24) tower diameter be 320mm～
500mm, tower height is 1300mm～1490mm, and cooling tower (24) cooling range is 6 DEG C～15 DEG C, and described filler selected from external diameter is
The plastic spherical filler of 20mm～50mm.
14. device for evaluating performance according to claim 11, wherein, described cooling tower (24) tower diameter be 320mm～
500mm, tower height is 1300mm～1490mm, and cooling tower (24) cooling range is 6 DEG C～15 DEG C, and described filler selected from external diameter is
The plastic spherical filler of 20mm～50mm.
15. device for evaluating performance according to claim 1, wherein, in described each device with natural sea-water, concentrated seawater or
The material of the parts that medicament directly contacts is seawater corrosion resistance material or acid and alkali-resistance material.
Described in 16. claim 1, chemical system circularly-cooling sea water treatment agent device for evaluating performance is to marine circulating cooling system
The evaluation methodology of water treatment agent performance, it is characterised in that comprise the steps: to open the powder performance described in claim 1
Evaluating apparatus so that seawater circulation is via traffic monitoring unit, corrosion monitoring unit, temperature monitoring unit and simulation monitoring heat exchange
After device, enter cooling tower unit, in the collecting-tank (6) that the sea water after cooling is recirculated back in moisturizing unit；
Wherein, detected by traffic monitoring unit and temperature monitoring unit, under conditions of making system stability, i.e. make respectively
The bar that vapor (steam) temperature in circulating seawer flow, circulating water intake temperature and simulation monitoring heat exchanger (15) is in target zone
Under part, detect, gather corrosion data, dirtiness resistance data and/or water quality testing data, with evaluate medicament control seawater corrosion,
Fouling and/or bacterium algae growth performance；
Wherein, selectivity moisturizing is carried out by liquid level monitoring unit.
17. evaluation methodologys according to claim 16, the monitoring of described corrosive nature is by corrosion monitoring unit and simulation prison
The heat-transfer pipe surveying heat exchanger (15) realizes, the combination of any one or two kinds of including in following two kinds of methods:
(1) by the import corrosion probe (13) arranged on heat exchange unit circulating water pipework and outlet corrosion probe (20) with electrochemical
Learn online Corrosion monitoring instrument to connect, it is achieved electrochemistry on-line checking；
(2) import lacing film box (10) on heat-transfer pipe, heat exchange unit circulating water pipework in detection simulation monitoring heat exchanger (15)
With the reduced gravity situations of test piece in outlet lacing film box (21), it is achieved corrosion weight loss detects.
18. evaluation methodologys according to claim 16, wherein, described traffic monitoring unit includes being arranged at heat exchange unit
Spinner flowmeter (9), flow transmitter (11) and flow control valve (12) on recirculated water suction line；
Described temperature monitoring unit also include being arranged at cooling tower (24) close to the air damper controller (25) of collecting-tank (6) one end and
It is arranged at the temperature sensor of thermometer hole at the bottom of tower (26)；
The described vapor (steam) temperature made in circulating seawer flow, circulating water intake temperature and simulation monitoring heat exchanger (15) is in target
In the range of carried out by the method that comprises the steps:
(1) temperature sensor by being installed in simulation monitoring heat exchanger (15) realizes the monitoring of vapor (steam) temperature；
(2) by spinner flowmeter (9) and flow transmitter (11) monitoring circulating water flow, automatic by flow control valve (12)
Control valve opening；
(3) temperature sensor of thermometer hole (26) at the bottom of comparison import thermal bulb (14) records circulating water intake temperature and tower records
Tower bottom water temperature, be automatically adjusted the aperture of air damper controller (25), control cooling tower intake.
19. evaluation methodologys according to claim 17, wherein, described traffic monitoring unit includes being arranged at heat exchange unit
Spinner flowmeter (9), flow transmitter (11) and flow control valve (12) on recirculated water suction line；
Described temperature monitoring unit also include being arranged at cooling tower (24) close to the air damper controller (25) of collecting-tank (6) one end and
It is arranged at the temperature sensor of thermometer hole at the bottom of tower (26)；
The described vapor (steam) temperature made in circulating seawer flow, circulating water intake temperature and simulation monitoring heat exchanger (15) is in target
In the range of carried out by the method that comprises the steps:
(1) temperature sensor by being installed in simulation monitoring heat exchanger (15) realizes the monitoring of vapor (steam) temperature；
(2) by spinner flowmeter (9) and flow transmitter (11) monitoring circulating water flow, automatic by flow control valve (12)
Control valve opening；
(3) temperature sensor of thermometer hole (26) at the bottom of comparison import thermal bulb (14) records circulating water intake temperature and tower records
Tower bottom water temperature, be automatically adjusted the aperture of air damper controller (25), control cooling tower intake.
20. evaluation methodologys according to claim 18, wherein, described steam is normal pressure saturated vapor, and temperature controls 98
DEG C～102 DEG C；Described cooling water flow is by selecting heat-transfer pipe specification, and keeping pipe maritime interior waters flow velocity is 0.8m/s～2m/s setting control
System；Described circulating water intake temperature is controlled in 30 DEG C～40 DEG C.
21. evaluation methodologys according to claim 19, wherein, described steam is normal pressure saturated vapor, and temperature controls 98
DEG C～102 DEG C；Described cooling water flow is by selecting heat-transfer pipe specification, and keeping pipe maritime interior waters flow velocity is 0.8m/s～2m/s setting control
System；Described circulating water intake temperature is controlled in 30 DEG C～40 DEG C.
22. according to the evaluation methodology described in any one of claim 18-21, wherein, by described traffic monitoring-unit and temperature
Monitoring unit realizes fouling thermal resistance monitoring, and this fouling thermal resistance monitoring comprises the steps:
(1) under conditions of system stability, when measuring cleaning pipe respectively by import thermal bulb (14) and outlet thermal bulb (19)
Refrigerated sea water inlet temperature t 'EnterWith refrigerated sea water outlet temperature t during cleaning pipe 'Go out；Recirculated water is measured by flow transmitter (11)
Flow G；By upper temperature sensor measurement vapor (steam) temperature T installed of simulation monitoring heat exchanger (15)；
(2), after system stability, every 2h, measured refrigerated sea water wink respectively by import thermal bulb (14) and outlet thermal bulb (19)
Time inlet temperature tEnterWith refrigerated sea water instantaneous output temperature tGo out, with following formula calculate dirtiness resistance:
In formula, diFor heat-transfer pipe internal diameter in simulation monitoring heat exchanger (15), l is the having of heat-transfer pipe in simulation monitoring heat exchanger (15)
Effect heat transfer length.
23. according to the evaluation methodology described in any one of claim 16-21, and wherein, described blowdown unit includes being arranged at heat friendship
Change the electric blowdown valve (22) on unit circulating water outlet pipeline and be arranged at the overfall (6a) on collecting-tank top；Described monitoring
Unit also includes pH monitoring unit and conductance monitoring unit；
This evaluation methodology also includes realizing blowdown operation by the conductance monitoring unit in blowdown unit and monitoring unit, and it includes
Following step: controlling circulating seawer electrical conductivity by conductance monitoring unit is (30～100) ms/cm ± (50～500) us/cm,
Control the opening of electric blowdown valve (22), to realize blowdown.
24. according to the evaluation methodology described in any one of claim 16-21, and wherein, described monitoring unit also includes that pH monitoring is single
Unit and conductance monitoring unit；Described liquid level monitoring unit includes the liquid level sensor (4) being arranged in moisturizing pond (3)；Described pH
Monitoring unit includes the pH sensor (7a) being arranged in collecting-tank (6)；Described conductance monitoring unit includes being arranged at collecting-tank
(6) conductivity sensor (7b) in；
This evaluation methodology also includes dosing operation, and it is single by the moisturizing pond (3) in dosing unit, moisturizing unit and monitoring
Liquid level monitoring unit and pH monitoring unit in unit realize, and comprise the steps:
(1) during moisturizing pond (3) sea water liquid level limits automatic water supplement from lower bound to height, the first dosing pump (27) presses sea water moisturizing
Measure and the most proportional add sea water corrosion inhibiting and descaling agent；
(2) implement demand according to sea water, circulating water quality situation and water disposal plan, set circulating seawer control ph ± 0.1
Or pH value ± 0.05, when detecting pH in Circulating Water and exceeding the upper limit or lower limit, the acid of the second dosing pump (28) automatic feeding or alkali；
(3) sea water bacterium algae biocide passes through manual or automatic adding equipment, is periodically added to by circulation volume is proportional
In collecting-tank (6).
25. evaluation methodologys according to claim 24, wherein, this evaluation methodology also includes water quality detection and monitoring operation,
It includes following any one or the step of more than two kinds:
(1), in process of the test, pH value and the conductance of circulating seawer is monitored respectively with described pH monitoring unit and conductance monitoring unit
Rate；
(2) in process of the test, laboratory synchronous detecting sea water, the turbidity of circulating seawer, basicity, chloride ion, calcium ion, magnesium ion
Or iron ion content；
(3) in process of the test, the content of microorganism in periodic detection sea water, circulating seawer.
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