CN101117247A - Distribution method for flue gas desulfurization waste-water vortex separation system - Google Patents
Distribution method for flue gas desulfurization waste-water vortex separation system Download PDFInfo
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- CN101117247A CN101117247A CNA2007100924033A CN200710092403A CN101117247A CN 101117247 A CN101117247 A CN 101117247A CN A2007100924033 A CNA2007100924033 A CN A2007100924033A CN 200710092403 A CN200710092403 A CN 200710092403A CN 101117247 A CN101117247 A CN 101117247A
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Abstract
The invention relates to an arrangement method of waste water cyclone separating system in desulfurization system, and is characterized in that when a static pressure produced by the difference between a gypsum slurry cyclone overflow and a waste water cyclone inlet elevation can get over the summation of the waste water cyclone inlet pressure and a pipe water head loss, a waste water feeding box and a waste water feeding pump are removed; when the static pressure produced by the difference between the gypsum slurry cyclone overflow and the waste water cyclone inlet elevation can not get over the summation of the waste water cyclone inlet pressure and the pipe water head loss, the waste water feeding box and the gypsum slurry cyclone overflow can be connected with each other, and are arranged on a building floor with same high elevation, the waste water feeding pump and the waste water cyclone are arranged on a building floor with same low elevation or the gypsum slurry cyclone, the waste water feeding box and the waste water feeding pump are connected with each other in turn, and are arranged on a building floor with same high elevation, and are connected with the waste water cyclone arranged on the building floor with low elevation; the beneficial effect of the invention is that the design is simplified, the investment on equipment, the operation cost are reduced.
Description
Technical field
The present invention relates to the flue gas desulfurization field, particularly a kind of method for arranging of waste-water vortex separation system in the desulphurization system.
Background technology
Wingdale (lime/carbide slag)-gypsum wet flue gas desulfurizing technology is a current domestic and international application flue gas desulfurization technique the most widely, and domestic application market is more than 95%.In the desulphurization system operational process, owing to carrying of sweetening agent and flue gas, impurity such as some inert substances, chlorion can enter desulphurization system.When inert substance concentration exceeds the tolerance degree of desulfurizer, can influence desulfurizer slurry to SO
2Absorption, cause desulfuration efficiency to reduce; When chlorine ion concentration surpasses certain restriction, can quicken the corrosion of sweetener, also can influence the quality of gypsum.Therefore, must take variety of way that inert substance in the stock tank of absorption tower and chlorine ion concentration are controlled within the specific limits.Waste-water vortex separation system carries out the secondary separation waste discharge by the overflow to the plaster serum rotational flow device, plays the purpose that reduces chlorine ion concentration and inert substance content in the slurries pond, absorption tower.
In the desulphurization system, it is calcium plaster overboard pump → gypsum slurries baffle-box → calcium plaster line pump → plaster serum rotational flow device that the gypsum slurries in the stock tank of absorption tower is discharged flow process.The plaster serum rotational flow device is arranged in the vacuum belt dewaterer upper strata, after entering the vacuum belt dewaterer dehydration, the underflow gravity flow of gypsum slurries after the plaster serum rotational flow device separates obtain by-produced gypsum, overflow then enters waste-water vortex separation system, after separating, waste-water vortex separation system obtains about 1% overflow and about 10% underflow, 1% overflow is transported to waste water processing station through the waste water pump lifting again through the waste water tank collection and handles, and 10% underflow then returns the absorption tower.
The technical process of traditional waste-water vortex separation system is: plaster serum rotational flow device overflow → waste water feed box → waste water feeding pump → waste-water vortex device → waste water tank → wastewater treatment.Traditional waste-water vortex system layout method is: do not go to calculate static pressure that the difference of overflow of plaster serum rotational flow device and waste-water vortex device inlet absolute altitude produces and the relation between waste-water vortex device inlet pressure and the pipeline head loss sum, directly waste water feed box, waste water feeding pump, waste-water vortex device are arranged in same one deck, the overflow of plaster serum rotational flow device is by waste water feed box buffering, enter the waste-water vortex device after boosting by the waste water feeding pump again and carry out solid-liquid separation, the overflow gravity flow of the waste-water vortex device after the separation enters waste water tank, delivers to waste water processing station again and handles.All adopt this kind traditional technology at present both at home and abroad, this technology exists technological design comparatively complicated, and the investment of waste-water vortex system device is big, the more high shortcoming of running cost.
Summary of the invention
The purpose of this invention is to provide a kind of energy simplified design, reduce the method for arranging of the waste-water vortex separation system of facility investment and running cost.
Concrete technical scheme is as follows:
A kind of method for arranging of waste-water vortex separation system, comprise the plaster serum rotational flow device overflow that is arranged in high absolute altitude and and be arranged in the waste-water vortex device of low absolute altitude and be connected between the two waste water feed box, waste water feeding pump, when it is characterized in that static energy that the difference when the overflow of plaster serum rotational flow device and waste-water vortex device inlet absolute altitude produces overcomes waste-water vortex device inlet pressure and pipeline head loss sum, remove waste water feed box, waste water feeding pump, the overflow of plaster serum rotational flow device is directly linked to each other with the waste-water vortex device; When the static pressure that produces when the difference of the overflow of plaster serum rotational flow device and waste-water vortex device inlet absolute altitude can not overcome waste-water vortex device inlet pressure and pipeline head loss sum, the waste water feed box linked to each other with the overflow of plaster serum rotational flow device be arranged in the high floor of same high standard, waste water feeding pump and waste-water vortex device are arranged in same low absolute altitude floor, and the waste water feeding pump connects waste water feed box and waste-water vortex device; Or, connect again to be arranged in and hang down the waste-water vortex device that absolute altitude is hugged layer the continuous successively high floor of same high standard that is arranged in of plaster serum rotational flow device, waste water feed box, waste water feeding pump.
When the overflow of plaster serum rotational flow device and waste-water vortex device enter the mouth static energy that the difference of both absolute altitudes produces when overcoming waste-water vortex device inlet pressure and pipeline head loss sum, the overflow of plaster serum rotational flow device can be flow automatically and be entered the waste-water vortex device, at this moment two equipment of waste water feed box and waste water feeding pump be can remove, investment of waste water feed box and waste water feeding pump and waste water feeding pump working cost saved.
When the static pressure that produces when the difference of the overflow of plaster serum rotational flow device and waste-water vortex device inlet absolute altitude can not overcome waste-water vortex device inlet pressure and pipeline head loss sum, can take two kinds of processing set-up:
A kind of is that waste water feed box and plaster serum rotational flow device are arranged in the high floor of same high standard, and waste water feeding pump and waste-water vortex device are arranged in same low absolute altitude floor, and the waste water feeding pump connects waste water feed box and waste-water vortex device;
Another is that plaster serum rotational flow device, waste water feed box, waste water feeding pump are arranged in the high floor of same high standard successively, and the waste-water vortex device is arranged in low absolute altitude and hugs layer.These two kinds of method for arranging can reduce waste water feed pump lift, thereby reduce the running cost of waste-water vortex separation system.
The static pressure that the difference of the overflow of plaster serum rotational flow device and waste-water vortex device inlet absolute altitude produces, waste-water vortex device inlet pressure and pipeline head loss can be by calculating, and can be in detection validation related data on the spot.
The present invention is by detecting on the spot and calculating, whether the static pressure of judging the difference generation of overflow of plaster serum rotational flow device and waste-water vortex device inlet absolute altitude satisfies waste-water vortex device inlet pressure and pipeline head loss sum, thereby regulate the layout of total system, its beneficial effect is a simplified design, reduces facility investment and running cost.
Specific embodiment (totally 2 examples)
Embodiment 1
In 2 * 600MW flue gas desulfurization (FGD) unit, it is that the plaster serum rotational flow device is arranged in the high floor of high standard that traditional waste-water vortex separation system is arranged, waste water feed box, waste water feeding pump, waste-water vortex device are arranged in same low absolute altitude floor, and the absolute altitude of the overflow of plaster serum rotational flow device, waste water feed box, waste water feeding pump, waste-water vortex device inlet is respectively 38.5m, 11.5m, 11.5m, 11.5m.The difference of the absolute altitude of overflow of plaster serum rotational flow device and waste-water vortex device inlet is 27m, and according to calculating as can be known, the static pressure that this discrepancy in elevation produces can overcome the requirement of waste-water vortex device inlet pressure and pipeline head loss sum.Therefore, arrange that according to novel process of the present invention plaster serum rotational flow device and waste-water vortex device remain unchanged, promptly the plaster serum rotational flow device is arranged in the high floor of high standard, and the waste-water vortex device is arranged in low absolute altitude floor, and removes waste water feed box and waste water feeding pump.At this moment, the absolute altitude of plaster serum rotational flow device overflow is 38.5m, waste-water vortex device inlet absolute altitude 11.5m, and the overflow of plaster serum rotational flow device will flow to the waste-water vortex device certainly.Compare with traditional technology,, save the about 5kw/h of waste water feeding pump power consumption by about 100,000 yuan of the investment cost that this new method for arranging can be saved waste water feed box and waste water feeding pump.
Embodiment 2
2 * 300MW flue gas desulfurization (FGD) unit, it is that the plaster serum rotational flow device is arranged in the high floor of high standard that traditional waste-water vortex separation system is arranged, waste water feed box, waste water feeding pump, waste-water vortex device are arranged in same low absolute altitude floor, and the absolute altitude of plaster serum rotational flow device, waste water feed box, waste water feeding pump, waste-water vortex device is respectively 23m, 12m, 12m, 12m.Plaster serum rotational flow device overflow (absolute altitude 25m) is 12m with the difference of the absolute altitude of waste-water vortex device inlet (absolute altitude 13m), and according to calculating as can be known, the static pressure that this discrepancy in elevation produces can not satisfy the requirement of waste-water vortex device inlet pressure and pipeline head loss sum.Therefore, arrange according to novel process of the present invention, waste water feed box and plaster serum rotational flow device are arranged in layer, waste water feeding pump and waste-water vortex device remain unchanged and are arranged in low absolute altitude floor, at this moment, the absolute altitude of plaster serum rotational flow device overflow is 25m, and waste water feed box absolute altitude is 23m (absolute altitude when arranging than traditional technology has increased 11m), and the absolute altitude of waste water feeding pump and waste-water vortex device inlet is constant, is respectively 12m, 13m.At this moment, the overflow of plaster serum rotational flow device is delivered to waste-water vortex device inlet from flowing to the waste water feed box after the waste water feeding pump through being arranged in low absolute altitude floor boosts again.Compare with traditional technology, the initial cost of waste water feeding pump is lower than traditional arrangement, and the 0.27Mpa when waste water feeding pump lift is arranged by traditional technology is reduced to 0.16Mpa, and pump shaft power is reduced to 3.5kw by 5.9kw, can save the about 3kw/h of power consumption.
Claims (1)
1. the method for arranging of a waste-water vortex separation system, comprise the plaster serum rotational flow device overflow that is arranged in high absolute altitude and and be arranged in the waste-water vortex device of low absolute altitude and be connected between the two waste water feed box, waste water feeding pump, when it is characterized in that static energy that the difference when the overflow of plaster serum rotational flow device and waste-water vortex device inlet absolute altitude produces overcomes waste-water vortex device inlet pressure and pipeline head loss sum, remove waste water feed box, waste water feeding pump, the overflow of plaster serum rotational flow device is directly linked to each other with the waste-water vortex device; When the static pressure that produces when the difference of the overflow of plaster serum rotational flow device and waste-water vortex device inlet absolute altitude can not overcome waste-water vortex device inlet pressure and pipeline head loss sum, the waste water feed box linked to each other with the overflow of plaster serum rotational flow device be arranged in the high floor of same high standard, waste water feeding pump and waste-water vortex device are arranged in same low absolute altitude floor, and the waste water feeding pump connects waste water feed box and waste-water vortex device; Or, connect again to be arranged in and hang down the waste-water vortex device that absolute altitude is hugged layer the continuous successively high floor of same high standard that is arranged in of plaster serum rotational flow device, waste water feed box, waste water feeding pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100924033A CN101117247A (en) | 2007-07-09 | 2007-07-09 | Distribution method for flue gas desulfurization waste-water vortex separation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100924033A CN101117247A (en) | 2007-07-09 | 2007-07-09 | Distribution method for flue gas desulfurization waste-water vortex separation system |
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| CN101117247A true CN101117247A (en) | 2008-02-06 |
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| CNA2007100924033A Pending CN101117247A (en) | 2007-07-09 | 2007-07-09 | Distribution method for flue gas desulfurization waste-water vortex separation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872710A (en) * | 2012-09-26 | 2013-01-16 | 北京国电龙源环保工程有限公司 | Waste water cyclone system for desulfuration device of thermal power station |
-
2007
- 2007-07-09 CN CNA2007100924033A patent/CN101117247A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872710A (en) * | 2012-09-26 | 2013-01-16 | 北京国电龙源环保工程有限公司 | Waste water cyclone system for desulfuration device of thermal power station |
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