CN202044901U - Water supply and drainage control system in sulfur removal technology by magnesium-based-seawater method - Google Patents
Water supply and drainage control system in sulfur removal technology by magnesium-based-seawater method Download PDFInfo
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- CN202044901U CN202044901U CN2011200405828U CN201120040582U CN202044901U CN 202044901 U CN202044901 U CN 202044901U CN 2011200405828 U CN2011200405828 U CN 2011200405828U CN 201120040582 U CN201120040582 U CN 201120040582U CN 202044901 U CN202044901 U CN 202044901U
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Abstract
The utility model discloses a water supply and drainage control system in a sulfur removal technology by a magnesium-based-seawater method. The system mainly comprises a float type liquid level meter, a pH meter, a smoke temperature monitoring and control meter, a smoke flow meter, a drainage pump and a seawater pump. The float type liquid level meter and the pH meter are arranged in a slurry tank; the float type liquid level meter can reflect the evaporated water amount in the smoke cooling process driven by variation of the slurry liquid level; the pH meter is used for monitoring the pH variation of the slurry in the slurry tank in real time; the smoke temperature monitoring and control meter and the smoke flow meter are arranged in a boiler smoke pipeline; the outer wall of the slurry tank is connected with the drainage pump and the seawater pump; according to the pH setting requirement of the slurry, the flow and the frequency of the drainage pump are controlled to form the atomizing liquid after the drainage reaction, and the seawater pump is controlled according to certain flow and frequency to supplement fresh water. The marine water supply and drainage device for sulfur removal runs steadily and automatically through the positioning of the float type liquid level meter, the controlling of the slurry pH, the adjusting of the inlet and outlet water flow, and the adopting of a reliable automatic control system.
Description
Technical field
The utility model relates to the flue gas desulfurization technique field, refers more particularly to the plumbing control system of magnesium method and seawater method desulphurization system.
Background technology
The sulfur content standard that the bunker fuel oil executed is very strict allows the emission-reduction technology of ship use through approval simultaneously, and condition is SO
2Discharging is equal to or less than the Low Sulfur Fuel Oil of burning 0.10%.Adopt the low fuel oil of sulfur-bearing will significantly improve vessel operating cost, so flue gas desulfurization becomes the most practicable selection of reply new standard.
With respect to dry method and semidry method, wet desulphurization is used widely with its mature technique.The most successful desulfur technology that reaches commercial Application is a chemical method at present, comprises calcium method, magnesium method and the desulfurization of seawater method.The influence of factors such as handle in geographical position, desulfuration byproduct because the seawater method is subjected to, desulfurizing agent source and price, usually be applied in that regionality is strong, exhaust gas volumn is less relatively or the better simply desulfurization project of technological requirement in; Lime (stone)-gypsum law technology maturation, low price, desulfuration efficiency height, so use morely, but its operating cost height, secondary pollution seriously, easily cause pipeline scale to stop up; The desulfurization of magnesium method has that system is simple, security of operation, reliability height, operating cost is low, desulfuration efficiency is high, applied widely, less scaling, non-secondary pollution, by-product utilization are worth more high relatively advantage, and the trend that progressively replaces the desulfurization of calcium method was arranged in recent years.
The strictness of boats and ships desulfurization index is subjected to the restriction of specific environment on the ship again in the general industry desulfurization, and desulfurization research and development application technology peculiar to vessel and difficulty in process are very big, still belongs to blank so far at home and abroad.Take which kind of method desulfurization to decide with requiring the desulfurization index that reaches according to concrete operating mode.For desulfurization on the specific ship,,, require desulfuration efficiency to reach 70-80% at least for reaching the corresponding equivalent of sulfur-bearing 1.00%m/m if use used fuel oil (sulfur-bearing is less than 4.5%m/m); For reaching the corresponding equivalent of sulfur-bearing 0.10%m/m, require desulfuration efficiency to reach 97% at least.Because calcium method desulfuration efficiency is below 95%, magnesium method desulfuration efficiency can reach 99%, so have only the desulfurization of magnesium method can reach the SO of new standard correspondence
2The concentration of emission value.Consider that simultaneously the space is limited on the ship, do not allow device to account for a large amount of volumes, consumptive material or accessory substance bulk deposition,, can only adopt the method for abandoning in the desulfurization of magnesium base so simple seawater method and the desulfurization of calcium method are all inadvisable.Advantage such as the desulfurization of magnesium base has non-secondary pollution simultaneously, take that volume is little, non-scaling, operating cost are low, to sum up, magnesium base desulfur technology is the most practicable to desulfurization peculiar to vessel.Moreover, consider the boats and ships operating mode, seawater obtains easy fresh water and obtains difficulty on the ship, proposes magnesium base-seawater method desulfur technology and is used for the boats and ships desulfurization.The seawater method only adopts the desulfurization of magnesium base as a kind of householder method when boats and ships run on the fresh water district, be subjected to seawater corrosion in conjunction with the seawater method to avoid treating apparatus.Magnesium base-seawater method desulfur technology is a kind of effective desulfur technology that is applicable to the boats and ships specific operation, yet domestic and international this boats and ships desulfur technology belongs to blank.
Summary of the invention
For realizing that magnesium base-seawater method desulfur technology is applied to boats and ships flue gas high-efficiency desulfurization, guarantee a whole set of desulfurizer supply and drain water system long-term stability, reliable, operation automatically, and then guarantee desulfurizer reliably and with long-term, operation up to standard, the utility model provides plumbing control system in a kind of magnesium base-seawater method sulfur removal technology peculiar to vessel.
Magnesium base-seawater method desulphurization system peculiar to vessel mainly comprises desulfurizing tower, cooled with seawater sprayer unit, slurry tank, multi-stage spray device, seawater, be provided with slurry pool in described desulfurizing tower bottom, slurry pool top is the multi-stage spray device, by oxidation fan aerating oxygen in slurry pool, feed seawater by sea water pump in slurry pool, the slurry pool bottom is provided with excavationg pump; The top of described slurry tank is provided with steam, magnesia powder, seawater pipeline, wherein jet chimney is provided with electronic steam valve, seawater pipeline is provided with the seawater flow meter, be provided with agitator in the slurry tank, slurry tank lower end discharge pipe is provided with the frequency conversion tubing pump, also is provided with the slurry flow meter on the discharge pipe and is connected to the multi-stage spray device; The multi-stage spray device also is connected to slurry pool by spray pump; Boiler smoke enters the cooled with seawater sprayer unit through the smoke discharging pipe that is provided with electric butterfly valve, frequency conversion fan, flue gas flow meter successively, and the cooled with seawater sprayer unit is along the spraying of boiler smoke direction of ventilation, and the boiler smoke through cooling off enters desulfurizing tower; The desulfurizing tower top is provided with demist net and new water spray system, and flue gas enters chimney and discharge from the exhaust opening of desulfurizing tower after handling, and the exhaust opening sidewall is provided with SO
2The analyzer probe; Also be provided with pH meter, float type level gauge in the slurry pool.
Adopt the mode of multistage slurry circulation chilling spray, circular response spray in magnesium base-seawater method sulfur removal technology peculiar to vessel, cooling fluid and reacted spray liquid drop to slurry pool again, cause the change of slurry pH, thereby influence desulfurized effect.In order to keep the balance of desulfurizer slurries circulatory system material, prevent that SO2 surpasses setting and guarantees desulfuration efficiency in the flue gas, must from the circulatory system, discharge a certain amount of spray liquid.The plumbing control device of sweetening process also will be realized process optimization, control automation simultaneously, reaches the operation troubles low frequencyization, to satisfy the requirement of boats and ships oceangoing voyage, low sulphur emissions.
Principle of the present utility model is: keep the slurry pool liquid level constant about 1m, change according to the slurry pool liquid level, determine the evaporated water in the cooling procedure; Change the control draining water yield and frequency according to slurry pH in the slurry pool; According to the evaporated water and the draining water yield, control new water magnitude of recruitment.
The technical solution of plumbing control system is achieved in that in the utility model magnesium base-seawater method sulfur removal technology peculiar to vessel
Main device comprises float type level gauge, pH meter, cigarette temperature observing and controlling meter, flue gas flow meter, excavationg pump, sea water pump; Described float type level gauge, pH meter are arranged in the slurry pool, and float type level gauge is changed by the slurry liquid level and drives the evaporated water that reflects in the flue gas cooling procedure, and the slurry pH that pH meter is monitored in the slurry pool in real time changes; Described cigarette temperature observing and controlling meter, flue gas flow meter are arranged on the boiler smoke pipeline; The slurry pool outer wall is connected with excavationg pump and sea water pump, sets according to slurry pH to require control excavationg pump flow and frequency to discharge reaction back spray liquid, and the regulation and control sea water pump replenishes new water by certain flow and frequency.By float type level gauge location, slurry pH regulation and control, Inlet and outlet water Flow-rate adjustment, and rely on reliable automatic control system, realize stable, the operation automatically of desulfurization water feeding and draining device peculiar to vessel.
Boiler smoke enters desulfurizing tower by cooled with seawater, and slurry circulation chilling spray, circular response spray form cooling fluid and spray liquid and drop to slurry pool under the gravity effect in slurry pool.The slurry pool sidewall is equipped with float type level gauge, changed by the slurry liquid level and drives, and can reflect the evaporated water in the flue gas cooling procedure.Carry out with reaction, slurry pH descends gradually in the slurry pool, for guaranteeing high-efficiency desulfurization, determines the slurry pH excursion between the 6.5-11, is equipped with pH meter and monitors in real time.The slurry pool outer wall is connected with excavationg pump and sea water pump, set requirement according to slurry pH, control excavationg pump flow and frequency are discharged reaction back spray liquid, the step control sea water pump of going forward side by side replenishes new water by certain flow and frequency, keep the slurry pool liquid level constant about 1m, play the effect of regulating slurry pH simultaneously.
Plumbing control can realize by 2 approach: 1, continuation plumbing: remaining on constant meta-alkalescence value with slurry pH is prerequisite, according to flue-gas temperature with go out smoke density, control slurry supply and spray flux, with reference to the evaporated water in the cooling procedure, seek the stable state between the control of plumbing and slurry, realize the dynamic equilibrium between water outlet, water inlet and the feed three, keep the slurry pool liquid level constant; 2, discontinuity plumbing: reducing to 6.5 dynamic change with slurry pH from 11 is prerequisite, according to flue-gas temperature with go out smoke density, provide slurry according to certain flow and spray progression, when reducing to, pH sets down in limited time, discharging reaction back spray liquid, quantitatively additional new water, control slurry pool liquid level is about 1m at designated water level, slurry pH is raise to some extent, so repeatedly.Can select the plumbing control model that is fit to according to actual needs.The desulfurizing tower top is provided with demist net and new water spray system, and the unlatching of measuring the new water spray of control by flue gas flow is with timely cleaning demist net, auxiliaryly simultaneously plays the effect that replenishes new water.
The beneficial effects of the utility model are: the condition seawater resources that utilize boats and ships self to have are abundant, directly utilize seawater conduct consumptive material wherein.Adopt float type level gauge location liquid level, feed back electrical apparatus control system regulation and control slurry pH automatically by multichannel, be aided with the observing and controlling of cigarette temperature, Comprehensive Control plumbing amount realizes magnesium base-seawater method desulphurization system long-term stability peculiar to vessel, reliable, operation automatically.
Description of drawings
Below in conjunction with accompanying drawing and concrete embodiment the utility model is further described.
Fig. 1 is the systematic schematic diagram of magnesium base-seawater method sulfur removal technology peculiar to vessel.
Among the figure, 1, desulfurizing tower, 2, slurry tank, 3, chimney, 4, slurry pool, 5, seawater, 6, steam, 7, magnesia powder, 8, sea water pump, 9, the seawater flow meter, 10, motor-driven valve, 11, electronic steam valve, 12, frequency conversion tubing pump, 13, the slurry flow meter, 14, spray pump, 15, excavationg pump, 16, waste liquid, 17, oxidation fan, 18, boiler smoke, 19, electric butterfly valve, 20, frequency conversion fan, 21, the flue gas flow meter, 22, handle back gas.
The specific embodiment
Specify the utility model below in conjunction with embodiment.
Real ship carries out this spray slurry pH value regulator control system to SO on certain container ship
2The removal effect test.Use sulfur-bearing 0.71～0.93%m/m fuel oil, normal sail, the about 50000m of main frame discharging waste gas air quantity
3/ h.Adopt 440V, this device of 60Hz three-phase alternating current ship electricity power supply, the air inducing air quantity is less than 10000m
3/ h, air inducing power of fan are that 10～30kW is adjustable, and slurry pipeline variable frequency pump power is adjustable less than 3kW, and pressure 3.5～4.0atm, slurry supply flow rate are 0.1～1.0m
3/ h is adjustable (Mg (OH)
2Slurry concentration is less than 25%).The circulated sprinkling pump power is that 10～30kW is adjustable, and slurry sprays less than 100m
3/ h is adjustable.In 10 hours, the continuous service test result sees the following form.
Annotate: slurry pipeline variable frequency pump flow value is the estimation gained.
Adopt discontinuity plumbing pattern under prevailing condition, reducing to 6.5 dynamic change with slurry pH from 11.0 is prerequisite, according to flue-gas temperature with go out smoke density, respectively according to spray flow 30m
3/ h and 50m
3/ h carries out the desulfurized effect test.Set down in limited time when pH reduces to, discharging is reacted the back spray liquid, is quantitatively replenished new water, and control slurry pool liquid level is about designated water level 0.85～1.0m, so repeatedly.Test result shows SO under two kinds of spray flows
2All qualified discharges, and spray flow 50m
3The treatment effect of/h is better than spray flow 30m
3/ h.Water feeding and draining device is stable in the whole test process, and pH is regulated also certain effect, guarantees whole desulphurization system efficient stable operation.
The utility model is not limited to the foregoing description, and protection domain of the present utility model is all classified in any equivalent concepts or change in the technical scope that the utility model discloses as.
Claims (1)
1. plumbing control system in magnesium base-seawater method sulfur removal technology peculiar to vessel, it is characterized in that: main device comprises float type level gauge, pH meter, cigarette temperature observing and controlling meter, flue gas flow meter (21), excavationg pump (15), sea water pump (8); Described float type level gauge, pH meter are arranged in the slurry pool, and float type level gauge is changed by the slurry liquid level and drives the evaporated water that reflects in the flue gas cooling procedure, and the slurry pH that pH meter is monitored in the slurry pool in real time changes; Described cigarette temperature observing and controlling meter, flue gas flow meter (21) are arranged on the boiler smoke pipeline; The slurry pool outer wall is connected with excavationg pump (15) and sea water pump (8), sets according to slurry pH to require control excavationg pump flow and frequency to discharge reaction back spray liquid, and the regulation and control sea water pump replenishes new water by certain flow and frequency.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200405828U CN202044901U (en) | 2011-02-17 | 2011-02-17 | Water supply and drainage control system in sulfur removal technology by magnesium-based-seawater method |
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|---|---|---|---|
| CN2011200405828U CN202044901U (en) | 2011-02-17 | 2011-02-17 | Water supply and drainage control system in sulfur removal technology by magnesium-based-seawater method |
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| CN202044901U true CN202044901U (en) | 2011-11-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9387438B2 (en) | 2014-02-14 | 2016-07-12 | Tenneco Automotive Operating Company Inc. | Modular system for reduction of sulphur oxides in exhaust |
| CN108268074A (en) * | 2017-12-26 | 2018-07-10 | 上海亨远船舶设备有限公司 | A kind of embedded type closed loop control method for ship tail gas sodium alkali desulfurization system |
-
2011
- 2011-02-17 CN CN2011200405828U patent/CN202044901U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9387438B2 (en) | 2014-02-14 | 2016-07-12 | Tenneco Automotive Operating Company Inc. | Modular system for reduction of sulphur oxides in exhaust |
| CN108268074A (en) * | 2017-12-26 | 2018-07-10 | 上海亨远船舶设备有限公司 | A kind of embedded type closed loop control method for ship tail gas sodium alkali desulfurization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: WEIHAI PUYI MARINE ENVIRONMENTAL TECHNOLOGY CO.,LTD. Assignor: Dalian Maritime University Contract record no.: 2015210000026 Denomination of utility model: Water supply and drainage control system in magnesium based seawater marine desulfurization process Granted publication date: 20111123 License type: Exclusive License Record date: 20150424 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20200217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: WEIHAI PUYI MARINE ENVIRONMENTAL TECHNOLOGY CO.,LTD. Assignor: Dalian Maritime University Contract record no.: 2015210000026 Date of cancellation: 20221130 |
|
| EC01 | Cancellation of recordation of patent licensing contract |