CN1080619A - The novel injection de-aerator plant - Google Patents
The novel injection de-aerator plant Download PDFInfo
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- CN1080619A CN1080619A CN 92105145 CN92105145A CN1080619A CN 1080619 A CN1080619 A CN 1080619A CN 92105145 CN92105145 CN 92105145 CN 92105145 A CN92105145 A CN 92105145A CN 1080619 A CN1080619 A CN 1080619A
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- water
- pump
- aerator
- novel injection
- gas
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Abstract
A kind of novel injection de-aerator plant of forming by deaeration pump, water feed apparatus, vacuum extractor, discharging device and air intake device, a certain amount of gas enters the back of expanding in the deaeration pump by air intake device and contacts with the former water that forms liquid film in deaeration pump, mass transfer takes place under the effect of temperature head and concentration difference, dissolved oxygen in the water is taken away by upstream gas, thereby obtains comparatively ideal deaerating effect.Characteristics such as that the present invention has is simple in structure, mass-transfer efficiency height can be widely used in occasions such as boiler supply water deaerating, the separation of petrochemical complex liquid gas, the separation of low-boiling point material liquid gas, purification.
Description
The invention belongs to water-treatment technology field, particularly a kind of novel de-aerator plant.
Common de-aerator plant roughly can be divided three classes at present.One class is a thermal deoxygenizing apparatus, and the deoxygenation mechanism of this device is: under barometric point or the condition greater than barometric point, feed steam and make the water boiling, steam becomes water by condenser and refluxes, and gas is discharged outside the de-aerator plant.Vacuum heating power formula de-aerator plant then is the vacuum tightness that maintenance is equivalent to the boiling pressure of water in de-aerator plant, and feeds steam, and oxygen in water spreads in air film under the effect of heating power and concentration difference, is attracted upwards and discharges; Second class is a desorption and oxygen removing device, the deoxygenation mechanism of this device is when oxygen-free gas is contacted with the former water intense mixing of wanting deoxygenation, when being zero according to oxygen partial pressure power on the liquid level, the principle that the solubleness of oxygen reduces in the liquid, oxygen in the former water just goes in the gas that is diffused into anaerobic in a large number, thereby water oxygen level is reduced; The 3rd class is the chemical deoxidization device, the deoxygenation mechanism of this device be in de-aerator plant with materials such as reagent or steel cuttings, make they and oxygen in water generation chemical reaction, thereby reduce oxygen level.
More than this a few class de-aerator plants power consumption higher, and deoxygenation at high temperature mostly, general deaerating effect is not satisfactory.
The present invention is exactly at above-mentioned situation, according to the principle of the contact evaporation mass transfer that expands develop a kind of can be to the device of the former water of normal temperature (20 ℃～30 ℃) deoxygenation.
The principle of institute of the present invention foundation is: a certain amount of gas expands, makes its humidity and temperature to reduce in vacuum vessel, this low temperature and the temperature head that exists between steam partial pressure on exsiccant air and the water critical surface and airborne steam dividing potential drop, pressure difference and concentration difference, under their effect, the process of evaporation mass transfer just takes place in water surface, and its theoretical equation is:
Wherein: u, v, ω-flow velocity
P-density; The c-massfraction; ［ c=(m
1)/(m), m
1The quality of-gas, the quality of m-water vapor-air mixture]
The t-temperature; D-mass diffusion coefficient (virtual value);
c
p-specific heat at constant pressure; λ-heat transfer coefficient (virtual value);
In the formula:
Represent temperature difference mass transfer.
The present invention is by deaeration pump, air intake device, and water feed apparatus, vacuum extractor and discharging device constitute.Air intake device is a key of the present invention.Its formation is at deaeration pump bottom specific position a ventilating pit to be set.Orifice diameter is:
Wherein, μ-orifice-metering coefficient; G
S-air input kg/h; t
s-gas temperature (℃); P
a-intake pressure (MP
a).
Working process of the present invention is: vacuum extractor is extracted the air in the deaeration pump out, is atomized into tiny drop in the atomisation unit of former water in water feed apparatus enters deaeration pump, forms liquid film during downwards by packing layer.A certain amount of gas enters the back of expanding in the deaeration pump by air intake device and contacts with liquid film, mass transfer takes place under the effect of temperature head and concentration difference, dissolved oxygen in the water is taken away by upstream gas, and pump sucking-off deoxygenator is discharged or utilized to the water conservancy after the deoxygenation with gravity.
In order further to improve oxygen removal efficiency, the present invention can be provided with a heating spray heat and penetrate device in conjunction with the principle of thermal de-aeration on water feed apparatus, enters in the deaeration pump after making former water heating again.
De-aerator plant manufactured according to the present invention, not only simple in structure, the mass-transfer efficiency height more owing to adopt air inlet as driving gesture, can be obtained than the better deaerating effect of original deoxygenation mode.It can be widely used in boiler supply water deaerating, and petrochemical complex liquid gas separates, occasions such as the separation of low-boiling point material liquid gas, purification.
Accompanying drawing 1 is a specific embodiment of the present invention, and water feed apparatus is made of suction culvert 9; Vacuum extractor is made of water supply impeller pump 1, single-stage liquid-gas jet pump 2 and cyclic water tank 7, and water side, its outlet that the inlet end of single-stage liquid-gas jet pump is communicated with deaeration pump, its feed-water end connection water supply impeller pump enter cyclic water tank by pipeline; Deaeration pump is made of tank body 5, spraying gun 3, packing layer 4, mist eliminator 8; Discharging device is made of rising pipe 10; Air intake device 6 is arranged on the bottom of packing layer 4, is made of the admission piece that is being communicated with inlet pipe, and inlet pipe is arranged in the deaeration pump, and along having several air inlet ports on the journey.
Accompanying drawing 2 is an another specific embodiment of the present invention.And the distinguishing characteristics of last example is: be provided with an atmosphere injector 11 between the inlet end of single-stage liquid-gas jet pump 2 and deaeration pump 5.
Accompanying drawing 3 is the third embodiment of the present invention.This example is with the distinguishing characteristics of first example: water feed apparatus is made of water inlet pipe 9 and heated injectors 12.The air inlet termination vapour pipe of heated injectors, the former water of water inlet termination, outlet is communicated with water inlet pipe 9.
Among the accompanying drawing 1-3,1-water supply impeller pump, 2-single-stage liquid-gas jet pump, 3-spraying gun, 4-packing layer, 5-deaeration pump, 6-air intake device, 7-cyclic water tank, 8-mist eliminator, 9-suction culvert, 10-outlet pipeline, 11-atmosphere injector, 12-heated injectors.
Claims (5)
1, a kind of novel injection de-aerator plant of being made up of deaeration pump, suction culvert, vacuum extractor, discharging device is characterized in that: be provided with a ventilating pit in the bottom of described deaeration pump.
2, require 1 described novel injection de-aerator plant as weighing to plant, it is characterized in that: the aperture of described ventilating pit is:
Wherein, P
a-intake pressure (MPa), G
8-air input (kg/h)
t
-gas temperature (℃), μ-orifice-metering coefficient.
3, as claim 1,2 described novel injection de-aerator plants, it is characterized in that: described vacuum extractor is made of water supply impeller pump, single-stage liquid-gas jet pump and cyclic water tank.
4, as claim 1,2 described novel injection de-aerator plants, it is characterized in that: described vacuum extractor is made of water supply impeller pump, single-stage liquid-gas jet pump, atmosphere injector and cyclic water tank.
5, as claim 1,2 described novel injection de-aerator plants, it is characterized in that: described suction culvert is made of water inlet pipe and heated injectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92105145 CN1059877C (en) | 1992-06-25 | 1992-06-25 | Jet removing oxygen device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92105145 CN1059877C (en) | 1992-06-25 | 1992-06-25 | Jet removing oxygen device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1080619A true CN1080619A (en) | 1994-01-12 |
| CN1059877C CN1059877C (en) | 2000-12-27 |
Family
ID=4941194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92105145 Expired - Fee Related CN1059877C (en) | 1992-06-25 | 1992-06-25 | Jet removing oxygen device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059877C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1819868B (en) * | 2003-02-13 | 2013-10-09 | 深川胜之 | Method, device, and system for controlling dissolved amount of gas |
| CN103641196A (en) * | 2013-12-20 | 2014-03-19 | 上海化工研究院 | Bubbling-type degasser for removing trace gas impurities in water and application of bubbling-type degasser |
| CN104623929A (en) * | 2013-11-13 | 2015-05-20 | 中国石油天然气股份有限公司 | Method for removing dissolved oxygen contained in alkali liquor |
| CN105641975A (en) * | 2016-01-14 | 2016-06-08 | 中国核电工程有限公司 | Vacuum degassing system utilizing compressed air as power source |
| CN106927581A (en) * | 2017-04-28 | 2017-07-07 | 呼延念超 | A kind of temporary hardness boiler feed water corrosion-mitigation scale-inhibition water treatment system and method |
| CN109758792A (en) * | 2019-01-25 | 2019-05-17 | 江苏新美星包装机械股份有限公司 | Degassing tank suitable for stickiness feed liquid |
-
1992
- 1992-06-25 CN CN 92105145 patent/CN1059877C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1819868B (en) * | 2003-02-13 | 2013-10-09 | 深川胜之 | Method, device, and system for controlling dissolved amount of gas |
| CN104623929A (en) * | 2013-11-13 | 2015-05-20 | 中国石油天然气股份有限公司 | Method for removing dissolved oxygen contained in alkali liquor |
| CN104623929B (en) * | 2013-11-13 | 2016-09-07 | 中国石油天然气股份有限公司 | A kind of remove the method for dissolved oxygen in alkali lye |
| CN103641196A (en) * | 2013-12-20 | 2014-03-19 | 上海化工研究院 | Bubbling-type degasser for removing trace gas impurities in water and application of bubbling-type degasser |
| CN103641196B (en) * | 2013-12-20 | 2016-05-25 | 上海化工研究院 | A kind of bubbling degasifying apparatus and application that removes minimum gas impurity in water |
| CN105641975A (en) * | 2016-01-14 | 2016-06-08 | 中国核电工程有限公司 | Vacuum degassing system utilizing compressed air as power source |
| CN105641975B (en) * | 2016-01-14 | 2020-07-28 | 中国核电工程有限公司 | Vacuum degassing system using compressed air as power source |
| CN106927581A (en) * | 2017-04-28 | 2017-07-07 | 呼延念超 | A kind of temporary hardness boiler feed water corrosion-mitigation scale-inhibition water treatment system and method |
| CN109758792A (en) * | 2019-01-25 | 2019-05-17 | 江苏新美星包装机械股份有限公司 | Degassing tank suitable for stickiness feed liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1059877C (en) | 2000-12-27 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |