CN203324255U - System for evaluating foaming performance of liquid - Google Patents

System for evaluating foaming performance of liquid Download PDF

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Publication number
CN203324255U
CN203324255U CN2013204259745U CN201320425974U CN203324255U CN 203324255 U CN203324255 U CN 203324255U CN 2013204259745 U CN2013204259745 U CN 2013204259745U CN 201320425974 U CN201320425974 U CN 201320425974U CN 203324255 U CN203324255 U CN 203324255U
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China
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liquid
cylindrical shell
estimating
foaming behaviour
cavity
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CN2013204259745U
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Chinese (zh)
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吴华成
王应高
康玺
孙道林
周卫青
路璐
钟智坤
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State Grid Corp of China SGCC
North China Electric Power Research Institute Co Ltd
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State Grid Corp of China SGCC
North China Electric Power Research Institute Co Ltd
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Abstract

The utility model discloses a system for evaluating foaming performance of liquid. The system for evaluating the foaming performance of the liquid comprises a device for evaluating the foaming performance of the liquid. The device for evaluating the foaming performance of the liquid comprises a transparent first cylinder (2), wherein the bottom end of the first cylinder (2) is closed, a filter plate (6) is connected with the interior of the first cylinder (2) in a sealed mode, the interior of the first cylinder (2) is divided into an upper cavity (21) and a lower cavity (22), the upper cavity (21) and the lower cavity (22) are arranged vertically, and a gas inlet (7) is formed in the bottom end of the first cylinder (2). The system for evaluating the foaming performance of the liquid further comprises a gas source which is used for filling the lower cavity (22) with gas. According to the system for evaluating the foaming performance of the liquid, the foaming capacity of a slurry sample of a desulfuration operation absorption tower can be studied visually, conveniently and effectively, and the system for evaluating the foaming performance of the liquid can be used for directing an enterprise to adjust the operation mode of the desulfuration operation absorption tower, and various production safety problems caused by slurry foaming can be solved.

Description

For estimating the system of foaming behaviour of liquid
Technical field
The utility model relates to a kind of for estimating the system of foaming behaviour of liquid.
Background technology
The possess skills advantages such as maturation, wide adaptability, desulfuration efficiency be high, stable of lime stone-wet process of FGD, be widely used in China's coal burning machine at present.According to statistics, the Coal-fired group that national 300MW is above, 85% above sulfur removal technology is lime stone-wet fuel gas desulfurizing technology.But, due to deterioration, the defect fault of equipment of the deficiency of current initial designs, actual coal-fired ature of coal, operating experience is not enough and go deep into the reason such as lacking of Optimization Work, make the desulfurization facility exist at present many problems in operational process, affected safe, the stable and effectively operation of system.It is one of modal problem of current power plant desulfurization operation that the absorption tower slurries bubble, its main harm is: 1, slurries and foam overflow, absorption tower is provided with run-down pipe, slurries will be by the run-down pipe overflow to the outside, absorption tower, corrosion associated conduit equipment, the consequence of not establishing run-down pipe will be more serious, slurries enter in flue, sulfate in slurries and sulphite infiltrate in corrosion-proof lining and pore thereof with solution, when moisture evaporates gradually, sulfate in slurries and sulphite are separated out and crystallization, volume expands subsequently, make corrosion-proof lining produce stress, cause the damage of peeling off of anticorrosive coat, cause boiler flue corrosion, simultaneously, dust deposit in flue is serious gradually, flue resistance increases, affect the safe operation of boiler, slurries also can be deposited on not to be done in the former flue of corrosion-resistant, produce the flue underdeposit corrosion, serviceable life and the time between overhauls(TBO) of flue have been shortened, affecting desulphurization system normally moves, 2, overflow slurry is played a reversed role to former flue gas flue, arrives the booster fan outlet, in the situation that the operation personnel do not find in time, the fan blade that the fierce impact of overflow slurry is moving, to cause serious infringement, or even leaf destruction, cause booster fan to be stopped transport, 3, after the foaming overflow appears in absorption tower, absorption tower operation liquid level is false liquid level, actual liquid level reduces, the desulphurization reaction oxidation effectiveness can not guarantee, slurries Central Asia sulphates content increases gradually, causes the slurries quality to worsen, and uses the desulphurization system of smoke deflector, former flue gas likely crossfire, to clean fume side, causes SO 2discharge beyond standards, 4, slurries bubble when serious, and gypsum blowdown pump entrance slurries foam increases, and pump discharge pressure reduces, and can't normally get rid of gypsum, causes serum density to rise gradually, and liquid level is difficult to control.As can be seen here, the foaming of absorption tower slurries, as controlled not in time, will have a strong impact on safe, stable, the effectively operation of desulfurization facility.
Report and method about research foam stability and foam performance aspect are a lot, still, for the research of wet desulphurization slurries frothing capacity aspect, also there is no relevant report.Due to the characteristic of the high turbidity of desulfurization slurry, high solids content, existing these analytical approachs are inapplicable to the frothing capacity of research desulfurization slurry.
The utility model content
For the method that solves existing research foam stability and foam performance aspect be not suitable for the analyzing and researching technical matters of wet desulphurization slurries frothing capacity, it is a kind of for estimating the system of foaming behaviour of liquid that the utility model provides, should for the system of estimating foaming behaviour of liquid can be intuitively, facilitate, effectively study the foamability of desulfurization operation absorption tower slurry samples, for instructing enterprise to adjust the desulfuration absorbing tower method of operation, avoid the various production safety problems of because of slurries, bubbling and causing.Native system can be simulated the desulfurizer environment, and quantitative evaluation desulfurization slurry foamability, for electricity power enterprise's prevention ororrhea flow problem provides technical support.
The utility model for the technical scheme that solves its technical matters employing is: a kind of for estimating the system of foaming behaviour of liquid, comprise for estimating the device of foaming behaviour of liquid, describedly for the device of estimating foaming behaviour of liquid, comprise the first transparent cylindrical shell, the bottom sealing of the first cylindrical shell, be sealedly connected with filter plate in the first cylindrical shell, filter plate can be divided into the inside of the first cylindrical shell upper plenum setting up and down and lower cavity, and upper plenum and lower cavity are separate, the bottom of the first cylindrical shell is provided with air intake opening, describedly for the system of estimating foaming behaviour of liquid, also comprise for being filled with the source of the gas of gas in downward cavity.
Filter plate is the glass core.
The aperture of described glass core is 20 μ m~80 μ m, and the thickness of glass core is 3mm~7mm.
The internal diameter of the first cylindrical shell is 3cm~8cm, and the height of the first cylindrical shell is 30cm~50cm.
The air intake opening place is provided with the air in stop valve.
The first cylindrical shell is arranged with the second transparent cylindrical shell outward, be formed for the toroidal cavity of receiving fluids between the first cylindrical shell and the second cylindrical shell, the sidewall of the second cylindrical shell is provided with the inlet for filling liquid in described toroidal cavity, and the sidewall of the second cylindrical shell is provided with for discharging the liquid outlet of liquid in described toroidal cavity.
The surface of the first cylindrical shell is provided with scale.
Described source of the gas can be provided by air pressure pump, and air pressure pump is communicated with air intake opening.
Also comprise the water circulation water-bath, inlet and liquid outlet all are communicated with the water circulation water-bath.
Be provided with flowmeter between air pressure pump and air intake opening.
The beneficial effects of the utility model are: for the research of desulfuration absorbing tower slurries frothing capacity provides a kind of analytic system, and easy and simple to handle, visual phenomenon, the foamability of judgement slurries that can be quantitative.By this system can intuitive analysis the frothing capacity of judgement slurries, filled up the analytical equipment blank in this field.By the analysis result of test, instruct the power plant desulphurization system operation, avoid occurring the variety of issue that bubbles and cause because of slurries.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, to described in the utility model, for the system of estimating foaming behaviour of liquid, be described in further detail.
Fig. 1 is the structural representation of the device for estimating foaming behaviour of liquid.
Fig. 2 is the structural representation of the system for estimating foaming behaviour of liquid.
1. inlets wherein, 2. the first cylindrical shell, 21. upper plenums, 22. times cavitys, 3. scale, 4. the second cylindrical shell, 5. liquid outlet, 6. filter plate, 7. air intake opening, 8. air in stop valve, 9. air pressure pump, 10. water circulation water-bath, 11. flowmeters.
Embodiment
Below in conjunction with accompanying drawing, to described in the utility model, for the system of estimating foaming behaviour of liquid, be elaborated.A kind of for estimating the system of foaming behaviour of liquid, describedly for the system of estimating foaming behaviour of liquid, comprise for estimating the device of foaming behaviour of liquid, describedly for the device of estimating foaming behaviour of liquid, comprise the first transparent cylindrical shell 2, the bottom sealing of the first cylindrical shell 2, the top of the first cylindrical shell 2 is open, be sealedly connected with filter plate 6 in the first cylindrical shell 2, filter plate 6 can be divided into the inside of the first cylindrical shell 2 upper plenum setting up and down 21 and lower cavity 22, and upper plenum 21 and lower cavity 22 are separate, the bottom of the first cylindrical shell 2 is provided with air intake opening 7, describedly for the system of estimating foaming behaviour of liquid, also comprise for being filled with the source of the gas of gas in downward cavity 22, as depicted in figs. 1 and 2.
This system is when estimating the frothing capacity of liquid, at first add fluid sample in upper plenum 21, described fluid sample can be selected the slurry samples in desulfuration absorbing tower in the present embodiment, described fluid sample can be from upper plenum 21 flow to cavity 22, pass into gas again from the downward cavity 22 of air intake opening 7, gas will be by filter plate 6 stepless actions in fluid sample, fluid sample is bubbled, due to what be filled with from the downward cavity 22 of air intake opening 7 is interior, be the gas of stable gas pressure, after a period of time, the foam that the fluid sample upper strata produces will be in dynamic balance state, now the height of foam will no longer change, record the foam height in this moment, physico-chemical analysis result and foam height in conjunction with fluid sample, frothing capacity to fluid sample is carried out comprehensive evaluation.Should for the system of estimating foaming behaviour of liquid can be intuitively, facilitate, effectively study the foamability of desulfurization operation absorption tower slurry samples, for instructing enterprise to adjust the desulfuration absorbing tower method of operation, avoid the various production safety problems of because of slurries, bubbling and causing.The native system design can be simulated the desulfurizer environment, and quantitative evaluation desulfurization slurry foamability, for electricity power enterprise's prevention ororrhea flow problem provides technical support.
Filter plate 6 is the major parts in this device, due to described fluid sample can be from upper plenum 21 flow to cavity 22, will need has gas to pass through simultaneously, so filter plate 6 is the micropore filter plate, filter plate 6 contains micropore, and the micropore of filter plate 6 requires to be evenly arranged, the micropore size is moderate, if micropore is excessive, in slurries, solid particulate matter will likely enter micropore, cause filter plate to stop up; If micropore is too small, by the through-flow pressure of the gas of augmenting response device, make by the bubble volume of filter plate 6 rear generations too small, the impact analysis result.Filter plate 6 should have certain resistance to acids and bases.In addition, filter plate 6 is uniformly distributed the effect of gas in addition, makes gas pass through can form evenly size after filter plate 6, and stable bubble is in slurry samples.Filter plate 6 has been selected the glass core, and the aperture of described glass core is 20 μ m~80 μ m, and the thickness of glass core is 3mm~7mm.
The first cylindrical shell 2 is major parts of this device, is used for depositing the slurry samples on absorption tower.The internal diameter of the first cylindrical shell 2 should not be less than 3cm, when reactor inside diameter is too small, the foam wall effect can occur, form one deck liquid film on tube wall, test result is produced to certain error, so only have when internal diameter is enough large, the impact of wall effect just can be ignored, but the internal diameter of iodine device, in related device, the diameter of filter plate 6 also will amplify, and causes complex process, the problems such as cost rising.And throughput and analyzing by the slurry samples amount also by corresponding increase in the simulated experiment process, therefore should be noted and select suitable reactor inside diameter.Consider the problems referred to above, during the device design, the internal diameter of the first cylindrical shell 2 should be 4cm~8cm, and the height of the first cylindrical shell 2 is 30cm~50cm.
Air intake opening 7 places are provided with air in stop valve 8.Air in stop valve 8 is mainly used in controlling the opportunity that passes into air, guarantee filter plate 6 belows to the lower cavity 22 between air in stop valve 8 in barotropic state, prevent that filter plate 6 top sample liquids from entering in lower cavity 22 through filter plate 6, causes the actual sample amount to reduce, the impact analysis result.
Be arranged with the second transparent cylindrical shell 4 outside the first cylindrical shell 2, be formed for the toroidal cavity of receiving fluids between the first cylindrical shell 2 and the second cylindrical shell 4, the sidewall that the sidewall of the second cylindrical shell 4 is provided with for inlet 1, the second cylindrical shell 4 of filling liquid in described toroidal cavity is provided with the liquid outlet 5 for discharging liquid in described toroidal cavity.The material of the first cylindrical shell 2 and the second cylindrical shell 4 is transparent glass, and the sleeve design of the first cylindrical shell 2 and the second cylindrical shell 4 is to have used for reference the principle that condenser pipe utilizes heat interchange.Can be mainly used to like this carry out auxiliary heating and keep constant temperature to the fluid sample in the first cylindrical shell 2.Make the fluid sample temperature approach the on-the-spot actual motion temperature in absorption tower, avoid because of temperature factor impact analysis result.
The surface of the first cylindrical shell 2 is provided with scale 3.Scale 3 is mainly used to the foam number of slurry samples in the record analysis process, usings that this is worth measuring as the slurries frothing capacity.This scale be take length as unit, and minimum scale is 1mm, and scale zero is counted from the upper surface of filter plate 6.For convenience of clearly carrying out reading, scale mark should adopt colo(u)r streak.
Described source of the gas can be provided by air pressure pump 9, and air pressure pump 9 is communicated with air intake opening 7, as shown in Figure 2.
Should also comprise water circulation water-bath 10 for the system of estimating foaming behaviour of liquid, inlet 1 and liquid outlet 5 all are communicated with water circulation water-bath 10.Concrete, inlet 1 is communicated with the water side of water circulation water-bath 10, and liquid outlet 5 is communicated with the water inlet end of water circulation water-bath 10, as shown in Figure 2.
Be provided with flowmeter 11 between air pressure pump 9 and air intake opening 7.Flowmeter 11 is suspended body flowmeter, for adjusting by the gas flow of air intake opening 7.
Below introduce the using method for the system of estimating foaming behaviour of liquid described in the utility model.
Take certain Power Plant No.1 machine and No. 2 machine desulfuration absorbing tower slurry samples is embodiment.The density of No. 1 press proof product is Xg/l, and the density of No. 2 press proof product is Yg/l.As depicted in figs. 1 and 2, first close the air in stop valve 8 of this device lower end before experiment, get No. 1 machine slurry samples Aml in the upper plenum 21 of the first cylindrical shell 2, by water circulation water-bath 10, this slurry samples is heated to test temperature T, open air in stop valve 8, adjust suspended body flowmeter 11, by Q SThe air of flow is connected to the air intake opening 7 of device lower end by pipeline, gas will be by filter plate 6 stepless actions in this slurry samples, and after a period of time, the foam that this slurry samples upper strata produces will be in dynamic balance state, record the foam height in this moment, No. 1 press proof product foam height is h 1, the foam height produced according to above-mentioned same No. 2 machine slurry samples of methods analyst is h 2.In conjunction with physico-chemical analysis result and the foam height of slurry samples, the frothing capacity of sample is carried out to comprehensive evaluation, as better as the higher frothing capacity of height of foam.
The above; be only specific embodiment of the utility model, can not limit the scope that utility model is implemented with it, so the displacement of its equivalent assemblies; or the equivalent variations of doing according to the utility model scope of patent protection and modification, all should still belong to the category that this patent is contained.

Claims (10)

1. one kind for estimating the system of foaming behaviour of liquid, it is characterized in that, describedly for the system of estimating foaming behaviour of liquid, comprise for estimating the device of foaming behaviour of liquid, describedly for the device of estimating foaming behaviour of liquid, comprise transparent the first cylindrical shell (2), the bottom sealing of the first cylindrical shell (2), be sealedly connected with filter plate (6) in the first cylindrical shell (2), filter plate (6) can be divided into the inside of the first cylindrical shell (2) upper plenum setting up and down (21) and lower cavity (22), and upper plenum (21) and lower cavity (22) are separate, the bottom of the first cylindrical shell (2) is provided with air intake opening (7), describedly for the system of estimating foaming behaviour of liquid, also comprise for being filled with the source of the gas of gas in downward cavity (22).
2. according to claim 1 for estimating the system of foaming behaviour of liquid, it is characterized in that: filter plate (6) is the glass core.
3. according to claim 2 for estimating the system of foaming behaviour of liquid, it is characterized in that: the aperture of described glass core is 20 μ m~80 μ m, and the thickness of glass core is 3mm~7mm.
4. according to claim 1 for estimating the system of foaming behaviour of liquid, it is characterized in that: the internal diameter of the first cylindrical shell (2) is 3cm~8cm, and the height of the first cylindrical shell (2) is 30cm~50cm.
5. according to claim 1 for estimating the system of foaming behaviour of liquid, it is characterized in that: air intake opening (7) locates to be provided with air in stop valve (8).
6. according to claim 1 for estimating the system of foaming behaviour of liquid, it is characterized in that: be arranged with transparent the second cylindrical shell (4) outside the first cylindrical shell (2), be formed for the toroidal cavity of receiving fluids between the first cylindrical shell (2) and the second cylindrical shell (4), the sidewall of the second cylindrical shell (4) is provided with the inlet (1) for filling liquid in described toroidal cavity, and the sidewall of the second cylindrical shell (4) is provided with the liquid outlet (5) for discharging liquid in described toroidal cavity.
7. according to claim 6 for estimating the system of foaming behaviour of liquid, it is characterized in that: the surface of the first cylindrical shell (2) is provided with scale (3).
8. according to claim 1 for estimating the system of foaming behaviour of liquid, it is characterized in that: described source of the gas can be provided by air pressure pump (9), and air pressure pump (9) is communicated with air intake opening (7).
9. according to claim 6 for estimating the system of foaming behaviour of liquid, it is characterized in that: also comprise water circulation water-bath (10), inlet (1) and liquid outlet (5) all are communicated with water circulation water-bath (10).
10. according to claim 8 for estimating the system of foaming behaviour of liquid, it is characterized in that: between air pressure pump (9) and air intake opening (7), be provided with flowmeter (11).
CN2013204259745U 2013-07-17 2013-07-17 System for evaluating foaming performance of liquid Active CN203324255U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104297420A (en) * 2013-07-17 2015-01-21 国家电网公司 System for evaluating liquid foaming performance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104297420A (en) * 2013-07-17 2015-01-21 国家电网公司 System for evaluating liquid foaming performance

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