CN203642154U - Multistage depressurization, expansion and vaporization device for continuously drained wastewater of steam pockets - Google Patents
Multistage depressurization, expansion and vaporization device for continuously drained wastewater of steam pockets Download PDFInfo
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- CN203642154U CN203642154U CN201320699380.3U CN201320699380U CN203642154U CN 203642154 U CN203642154 U CN 203642154U CN 201320699380 U CN201320699380 U CN 201320699380U CN 203642154 U CN203642154 U CN 203642154U
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Abstract
The utility model discloses a multistage depressurization, expansion and vaporization device for continuously drained wastewater of steam pockets. The device comprises a tank body, and a first-level diffusion barrel, a second-level diffusion barrel, a third-level diffusion barrel and a nozzle arranged in the tank body, wherein a water inlet is formed in the top of the tank body; the bottom of the water inlet is connected with a large-diameter opening of the nozzle; a small-diameter opening in the other end of the nozzle is connected with a barrel opening of the first-level diffusion barrel through a diffusion pipe; the second-level diffusion barrel and the third-level diffusion barrel sequentially cover the first-level diffusion barrel; a plurality of diffusion holes are respectively formed in the three diffusion barrels; a steam exhaust opening is further formed in the bottom of the tank body for exhausting steam in the tank body. After the multistage depressurization, expansion and vaporization device is adopted to implement the multistage depressurization, expansion and vaporization for pollution discharge wastewater, low-temperature saturated steam is converted to enter a heat supply web pipe, so that waste heat is fully recycled; meanwhile, the whole device has the advantages of simple structure, convenience for operation and low cost.
Description
Technical field
The utility model relates to a kind of step-down dilatation vapourizing unit, particularly relates to a kind of drum platoon waste water multilevel decompression dilatation vapourizing unit.
Background technology
Boiler blow-off is that one in boiler operatiopn lost greatly, for controlling stove water, steam quality, boiler must carry out continuous blowdown and claim again surface blow-off, require continuously from the highest position discharge section stove water of stove water salt alkali concn, contain silicic acid amount and the fecal material content in suspended state with the salt content, the alkali number that reduce in stove water.Its object is exactly that quality in order to guarantee stove water makes the safe operation that boiler can be steady in a long-term.But this part thermal loss is also a large factor that affects boiler efficiency.
According to total 35t/h × 4 chain of stations bar oven of certain power plant and 50t/h × 3 CFBB, have at present 6 in operation, boiler total evaporation is about 180 tons/hour.General medium temperature and medium pressure supplies the continuous blowdown rate of pattern of fever boiler-steam dome 3%-5%, just can reach qualified quality by this index discharge boiler water.Medium temperature and medium pressure boiler-steam dome pressure is 3.82MPa, and the saturation water temperature under its saturation pressure is 247 ℃.6 continuous blowdown system of boiler rates of operation are with 3% calculating at present, total blowdown flow rate approximately has the drum platoon waste water of the steam-water mixing state of 5.4/ tons per hour left and right, after entering platoon flash vessel flash of steam, be recycled to oxygen-eliminating device, general platoon flash vessel to the waste heat recovery rate of boiler platoon stove water about 24% left and right.Though that is to say that the platoon waste water that these 5.4 tons of left and right have a higher thermal grade has reclaimed a part of heat through platoon flash vessel, but most of or access is surely arranged after flash vessel and is drained and do not accomplish that waste heat fully reclaims, not only cause a large amount of thermal source losses, also cause the thermal pollution to environment simultaneously.
In view of this, the inventor studies this, develops specially a kind of drum platoon waste water multilevel decompression dilatation vapourizing unit, and this case produces thus.
Utility model content
The purpose of this utility model is to provide a kind of drum platoon waste water multilevel decompression dilatation vapourizing unit, by multistage isothermal step-down, change the waste water of discharging in boiler-steam dome into low-temperature saturated steam, enter heat supply webmaster, thereby accomplish that used heat fully recycles, whole apparatus structure is simple, easy to operate and cost is low.
To achieve these goals, solution of the present utility model is:
A kind of drum platoon waste water multilevel decompression dilatation vapourizing unit, comprises tank body, and is arranged on one-level diffusion bucket in tank body, secondary diffusion bucket, three grades of diffusion buckets and nozzle etc.; Wherein, tank body top is provided with water inlet, the bottom of water inlet is connected with the large footpath of nozzle mouth, the path mouth of the nozzle other end is connected with the bung of one-level diffusion bucket by anemostat, secondary diffusion bucket, three grades of diffusion buckets are set on one-level diffusion bucket successively, on above-mentioned three diffusion buckets, be equipped with several diffusion holes, the bottom of above-mentioned tank body is further provided with a steam drain, for the discharge of water vapour in tank body.
The bung of above-mentioned one-level diffusion bucket, secondary diffusion bucket and three grades of diffusion buckets aligns mutually, is positioned on same vertical plane.
Between above-mentioned one-level diffusion bucket bung and secondary diffusion bung, secondary diffusion bucket bung and three grades of diffusion bucket bungs, be hermetically-sealed construction.
The large footpath mouth diameter of said nozzle is 50-80cm, and path mouth diameter is 25-50cm, and the effect of nozzle is mainly to improve flow velocity, reduces pressure, and then makes liquid waste water be converted to carbonated drink state.
Above-mentioned anemostat is horn-like, and tight-lipped close being connected of path of the little one end of bore and nozzle, the bung of the other end and one-level diffusion bucket is tightly connected.
As preferably, bucket wall and the bucket end on above-mentioned one-level diffusion bucket, are provided with the diffusion hole that diameter is 2-4mm, bucket wall and the bucket end on secondary diffusion bucket, are provided with the diffusion hole that diameter is 4-5mm, and bucket wall and the bucket end on three grades of diffusion buckets are provided with the diffusion hole that diameter is 2-4mm.
As preferably, the diameter of above-mentioned one-level diffusion bucket is 40-60cm, and the diameter of secondary diffusion bucket is 110-130cm, and the diameters of three grades of diffusion buckets are 130-150cm, adopt stainless steel material.
As preferably, the top of above-mentioned tank body is further provided with 1 or 1 above air intake, for entering of steam.
When above-mentioned drum platoon waste water multilevel decompression dilatation vapourizing unit uses, enter the water inlet of multilevel decompression dilatation vapourizing unit tank body by the female pipe of platoon from each boiler-steam dome continuous blowdown waste water out, because the vaporization of nozzle, make blowdown water be carbonated drink state and after anemostat, enter one-level diffusion bucket, through the diffusion hole on diffusion bucket, after the blowdown water step-down dilatation vaporization of above-mentioned carbonated drink state, enter secondary diffusion bucket, spread again the diffusion hole of bucket by secondary, further step-down dilatation enters three grades of diffusion buckets, platoon waste water has been vaporized into low-pressure saturated steam after afterbody step-down, finally discharge by steam drain.In the time the vapor (steam) temperature of discharging from steam drain being detected lower than setting value, open the valve of tank body top inlet valve, by the higher steam of air intake input temp, heat the low-pressure saturated steam in tank body, and then make the vapor (steam) temperature value of output meet the requirement of next procedure.
Adopt above-mentioned drum platoon waste water multilevel decompression dilatation vapourizing unit, after multistage dilatation step-down vaporization, change blowdown water into low-temperature saturated steam, enter heat supply webmaster; When temperature is during lower than the setting value of heat supply webmaster, can also carry out temperature-compensating by high-temperature steam, reach the heating steam with heat supply network corresponding temperature, thereby used heat is fully recycled, and whole apparatus structure is simple, easy to operate and cost is low.
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the drum platoon waste water multilevel decompression dilatation vapourizing unit structural representation of the present embodiment;
Fig. 2 is the structural representation of the secondary diffusion bucket of the present embodiment;
Fig. 3 is drum platoon waste water multilevel decompression dilatation vapourizing unit and the peripheral unit connection diagram of the present embodiment.
The specific embodiment
As shown in Figure 1-2, a kind of drum platoon waste water multilevel decompression dilatation vapourizing unit, comprises tank body 1, and is arranged on one-level in tank body 1 diffusion bucket 2, secondary diffusion bucket 3, three grades of diffusion buckets 4 and nozzle 5 etc.; Wherein, tank body 1 top is provided with water inlet 11, the bottom of water inlet 11 is connected with nozzle 5 large footpath mouths, the path mouth of nozzle 5 other ends is connected with the bung of one-level diffusion bucket 2 by anemostat 6, secondary diffusion bucket 3, three grades of diffusion buckets 4 are set on one-level diffusion bucket 2 successively, the bung of the bucket of one-level diffusion in the present embodiment 2, secondary diffusion bucket 3 and three grades of diffusion buckets 4 aligns mutually, be positioned on same vertical plane, and above-mentioned one-level spreads bucket 2 bungs and secondary spreads 3 bungs, secondary spreads between bucket 3 bungs and three grades of diffusion barrel 4 bungs and is hermetically-sealed construction.On above-mentioned three diffusion buckets, be equipped with several diffusion holes 21, the bottom of above-mentioned tank body 1 is further provided with a steam drain 12, for the discharge of tank body 2 interior water vapours.
Above-mentioned anemostat 6 is horn-like, and tight-lipped close being connected of path of the little one end of bore and nozzle 5, the bung of the other end and one-level diffusion bucket 2 is tightly connected.The large footpath mouth diameter of said nozzle 5 is 65cm, and path mouth diameter is 32cm, and the effect of nozzle 5 is mainly to improve flow velocity, reduces pressure, and then makes liquid waste water be converted to carbonated drink state.Above-mentioned anemostat 6 and nozzle 5 also can be made in a pipe, and a small-bore sluice gate is installed in the middle of pipe, realize the function of similar nozzle 5 just.
The top of above-mentioned tank body 2 is further provided with the first air intake 13 and the second air intake 14, for entering of higher temperature steam.
When above-mentioned drum platoon waste water multilevel decompression dilatation vapourizing unit 9 uses, as shown in Figure 3, it is 247 ℃ from each boiler-steam dome 7 temperature out, pressure is the continuous blowdown waste water of 3.82MPa enters above-mentioned multilevel decompression dilatation vapourizing unit 9 tank bodies 1 water inlet 11 by the female pipe 8 of platoon, because the vaporization of nozzle 5, make blowdown water be carbonated drink state and after anemostat 6, enter one-level diffusion bucket 2, one-level diffusion bucket 2 diameters are 50cm, length is 1m, volume is the stainless steel cask of 306L, on one-level diffusion bucket 2, be provided with the diffusion hole 21 that several diameters are 3mm, platoon waste water is vaporized and is entered secondary diffusion bucket 3 to 2.7Mpa left and right through one-level step-down dilatation, secondary diffusion bucket 3 diameters are that 60cm length is 1.2m, be provided with the diffusion hole that several diameters are 4mm, platoon waste water pressure decreased to 1.12Mpa left and right after secondary step-down dilatation vaporization enters three grades of diffusion buckets 4, three grades of diffusion bucket 4 diameters are 70cm, length is 1.4m, diffusion hole diameter is 4mm, platoon waste water is after afterbody step-down, Pressure Drop is to 0.52Mpa left and right, temperature is down to 198 ℃ of left and right, be vaporized into low-pressure saturated steam, now also need the extracted steam from turbine higher by a part of temperature or steam discharge to heat this part recovered steam because temperature is lower, general heating steam amount is 3 times of platoon waste water, (therefore, the diameter of steam drain 12 is greater than the diameter of water inlet 11 and the first air intake 13) heating steam from steam turbine draw gas or gland steam exhauster enters vaporization reheater through valve working steam electric control valve, heat to bring up to design temperature by the platoon steam of the first air intake 13 directly and after vaporization again, if having reached maximum operating range, working steam electric control valve regulated quantity still fails to reach the requirement of outlet steam design temperature, finally by the second air intake 14, supplement a road high temperature and supplement steam (boiler initial steam, 445 ℃ of pressure 3 of temperature, 5Mpa), high temperature supplements steam, through electric control valve, total recovered steam is carried out to temperature-compensating, final control temperature is consistent in corresponding pipe network vapor (steam) temperature, general high temperature compensation quantity of steam is controlled at and is no more than 1/10th of platoon wastewater flow rate.Whole control has been controlled automatically by PLC or DCS.Last recovered steam is incorporated to heating network 10 through the electronic outlet main valve of steam drain 12, thereby used heat is fully recycled.
The energy-saving benefit of above-mentioned drum platoon waste water multilevel decompression dilatation vapourizing unit calculates:
Press boiler blowdown rate 3%, the i.e. platoon waste water of 5.4 tons per hour of four boilers, should deduct and originally can reclaim to the economic benefit of oxygen-eliminating device 24% heat generation and per hourly will vaporize and heat the required supplementary initial steam of platoon stove water, the economic benefit that can do work and produce about approximately 1 ton/hour in steam turbine at platoon flash vessel.When this platoon waste water of 5.4 tons/hour is incorporated to heat supply network after improving hot grade after it is filtered, vaporizes, is heated again, its hot grade is equivalent to the calorific value of heating steam.Can be by supplying with 180 yuan of clearing of family price of hot use, annual producible economic well-being of workers and staff by steam per ton:
Economic benefit: $=5.4 ton × 24 hour of the heat generation reclaiming × 180 yuan × 330 days=7698240 yuan;
The heating steam that is converted into saving is: Q=5.4 ton × 2960000kj × 24 hour × 330 days=126593280000kj;
Check according to enthalpy entropy table, 0.5MPa, the steam heat enthalpy of 250 ℃ are, and: mono-ton of 2960kj/kg is 2960000kj;
The heat enthalpy value of standard coal per ton is: 29308000 kj;
The annual accurate coal of table of saving is: B=126593280000 kj ÷ 29308000kj=4319 ton.
Cost clearing: one ton of economic benefit that boiler initial steam can produce in steam turbine acting generating, by the required specific steam consumption 11kg/1kwh of generating a kilowatt, to finish steam discharge after merit and still can sell heat supply network and disregard cost here, the economic benefit of year generation is as follows:
One ton of initial steam can generate electricity: 1000kg ÷ 11 kg/1kwh=91 kwh;
By the electricity price electricity charge in 0.75 yuan of year: 91 kwh × 0.75 yuan × 24 hours × 330 days=540540 yuan.
Sum up: this scheme finally will deduct cost and the former platoon waste water that initial steam generating can produce economic benefit can reclaim 24% income at platoon flash vessel.
Year is energy saving economy income always: 7698240 × 76%-540540=5310122 yuan.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present utility model.
Claims (8)
1. a drum platoon waste water multilevel decompression dilatation vapourizing unit, is characterized in that: comprise tank body, and be arranged on one-level in tank body diffusion bucket, secondary diffusion bucket, three grades of diffusion buckets and nozzle; Wherein, tank body top is provided with water inlet, the bottom of water inlet is connected with the large footpath of nozzle mouth, the path mouth of the nozzle other end is connected with the bung of one-level diffusion bucket by anemostat, secondary diffusion bucket, three grades of diffusion buckets are set on one-level diffusion bucket successively, on above-mentioned three diffusion buckets, be equipped with several diffusion holes, the bottom of above-mentioned tank body is further provided with a steam drain, for the discharge of steam in tank body.
2. a kind of drum platoon waste water multilevel decompression dilatation vapourizing unit as claimed in claim 1, is characterized in that: the bung of above-mentioned one-level diffusion bucket, secondary diffusion bucket and three grades of diffusion buckets aligns mutually, is positioned on same vertical plane.
3. a kind of drum platoon waste water multilevel decompression dilatation vapourizing unit as claimed in claim 1, is characterized in that: between above-mentioned one-level diffusion bucket bung and secondary diffusion bung, secondary diffusion bucket bung and three grades of diffusion bucket bungs, be hermetically-sealed construction.
4. a kind of drum platoon waste water multilevel decompression dilatation vapourizing unit as claimed in claim 1, is characterized in that: the large footpath mouth diameter of said nozzle is 50-80cm, and path mouth diameter is 25-50cm.
5. a kind of drum platoon waste water multilevel decompression dilatation vapourizing unit as claimed in claim 1, is characterized in that: above-mentioned anemostat is horn-like, and tight-lipped close being connected of path of the little one end of bore and nozzle, the bung of the other end and one-level diffusion bucket is tightly connected.
6. a kind of drum platoon waste water multilevel decompression dilatation vapourizing unit as claimed in claim 1, it is characterized in that: bucket wall and the bucket end on above-mentioned one-level diffusion bucket are provided with the diffusion hole that diameter is 2-4mm, bucket wall and the bucket end on secondary diffusion bucket, are provided with the diffusion hole that diameter is 4-5mm, and bucket wall and the bucket end on three grades of diffusion buckets are provided with the diffusion hole that diameter is 2-4mm.
7. a kind of drum platoon waste water multilevel decompression dilatation vapourizing unit as claimed in claim 1, it is characterized in that: the diameter of above-mentioned one-level diffusion bucket is 40-60cm, the diameter of secondary diffusion bucket is 110-130cm, and the diameter of three grades of diffusion buckets is 130-150cm, adopts stainless steel material.
8. a kind of drum platoon waste water multilevel decompression dilatation vapourizing unit as claimed in claim 1, is characterized in that: the top of above-mentioned tank body is further provided with 1 or 1 above air intake, for entering of steam.
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| CN201320699380.3U CN203642154U (en) | 2013-11-07 | 2013-11-07 | Multistage depressurization, expansion and vaporization device for continuously drained wastewater of steam pockets |
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| CN201320699380.3U CN203642154U (en) | 2013-11-07 | 2013-11-07 | Multistage depressurization, expansion and vaporization device for continuously drained wastewater of steam pockets |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574586A (en) * | 2013-11-07 | 2014-02-12 | 余建强 | Multi-stage depressurization expansion vaporization device for steam pocket continuous blowdown waste water |
| WO2018144393A1 (en) * | 2017-01-31 | 2018-08-09 | Control Components, Inc. | Compact multi-stage condenser dump device |
| CN113834046A (en) * | 2021-11-04 | 2021-12-24 | 绍兴广通节能环保科技有限公司 | Enthalpy-enhanced steam purification recovery process for sewage water of power plant |
-
2013
- 2013-11-07 CN CN201320699380.3U patent/CN203642154U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574586A (en) * | 2013-11-07 | 2014-02-12 | 余建强 | Multi-stage depressurization expansion vaporization device for steam pocket continuous blowdown waste water |
| CN103574586B (en) * | 2013-11-07 | 2015-04-01 | 余建强 | Multi-stage depressurization expansion vaporization device for steam pocket continuous blowdown waste water |
| WO2018144393A1 (en) * | 2017-01-31 | 2018-08-09 | Control Components, Inc. | Compact multi-stage condenser dump device |
| US10731513B2 (en) | 2017-01-31 | 2020-08-04 | Control Components, Inc. | Compact multi-stage condenser dump device |
| CN113834046A (en) * | 2021-11-04 | 2021-12-24 | 绍兴广通节能环保科技有限公司 | Enthalpy-enhanced steam purification recovery process for sewage water of power plant |
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Granted publication date: 20140611 Termination date: 20161107 |