CN209894635U - Slurry density measuring system for eliminating adhesive bubbles in slurry - Google Patents
Slurry density measuring system for eliminating adhesive bubbles in slurry Download PDFInfo
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- CN209894635U CN209894635U CN201920650416.6U CN201920650416U CN209894635U CN 209894635 U CN209894635 U CN 209894635U CN 201920650416 U CN201920650416 U CN 201920650416U CN 209894635 U CN209894635 U CN 209894635U
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Abstract
The utility model relates to a wet flue gas desulfurization production technical field discloses a thick liquid density measurement system of adhesion bubble in elimination thick liquid. The utility model comprises a defoaming tank, a density measuring device and a washing water system; the defoaming tank is connected with a slurry pool of the absorption tower through a slurry conveying pipe, a liquid outlet of the slurry conveying pipe is connected with the side wall of the top of the defoaming tank, the bottom of the defoaming tank is connected with a measuring pipe, a second shut-off valve, a densimeter and a second flow control valve are sequentially connected in series on the measuring pipe, and a liquid outlet of the measuring pipe is connected with a trench; the defoaming tank comprises a tank body, an ultrasonic generator arranged on the inner side wall of the tank body, an air extractor arranged at the top of the tank body and a pH meter. The utility model discloses simple structure can effectively eliminate the bubble in the thick liquid that awaits measuring, accurate measurement thick liquid density.
Description
Technical Field
The utility model relates to a wet flue gas desulfurization production technical field especially relates to a thick liquid density measurement system who eliminates adhesion bubble in thick liquid.
Background
The pH value and density of the slurry in the absorption tower are important monitoring indexes for the operation of the desulfurization system. The pH value and the density play an important role in the desulfurization efficiency, the power consumption and the material consumption.
In practical engineering application, due to the reverse contact between spraying and flue gas of slurry in the absorption tower and the introduction of gas in the slurry tank, liquid disturbance exists in the slurry and a large number of bubbles are attached to tiny particles. At present, the density of the slurry in the absorption tower is measured by adopting the pressure difference of the tower wall or directly measuring the slurry in the tower by leading out the slurry on a pipeline, and the existing density measurement method can not eliminate the slurry disturbance or slurry bubbles so that the density measurement can not be accurately measured. Due to the disturbance of the slurry in the tower and the bubble phenomenon in the slurry, the measurement of the slurry density in the tower generally has larger deviation, and the poor measurement accuracy influences the running stability of the desulfurization system.
SUMMERY OF THE UTILITY MODEL
The utility model provides a simple structure can effectively eliminate the bubble in the thick liquid that awaits measuring, the thick liquid density measurement system of adhesion bubble in the elimination thick liquid of accurate measurement thick liquid density.
The technical problem to be solved is that: the existing density measurement system can not completely eliminate the influence of adhesive bubbles in slurry, the density measurement accuracy is poor, and the bubbles have great influence on the stable operation of the system.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model discloses eliminate thick liquid density measurement system of adhesion bubble in thick liquid, including defoaming jar, density measuring device and sparge water system; the defoaming tank is connected with a slurry pool of the absorption tower through a slurry conveying pipe, a liquid outlet of the slurry conveying pipe is connected with the side wall of the top of the defoaming tank, a liquid outlet of the bottom of the defoaming tank is connected with a measuring pipe, a second shut-off valve, a densimeter and a second flow control valve are sequentially connected in series on the measuring pipe, and a liquid outlet of the measuring pipe is connected with a trench; the defoaming tank comprises a tank body, an ultrasonic generator arranged on the inner side wall of the tank body, an air extractor arranged at the top of the tank body and a pH meter.
The utility model discloses eliminate thick liquid density measurement system of adhesion bubble in the thick liquid, it is further, the inlet and the absorption tower lateral wall of thick liquid conveyer pipe are connected, are located the operation liquid level below of inside thick liquid, apart from the position department of 1/3-1/2 liquid level height of liquid level.
The utility model discloses eliminate thick liquid density measurement system of adhesion bubble in the thick liquid, it is further, jar body hypomere is the big toper that the aperture is little down of last bore, and the toper bottom is the liquid outlet.
The utility model discloses eliminate thick liquid density measurement system of adhesion bubble in the thick liquid, it is further, supersonic generator quantity is 2, and the horizontal symmetry sets up, is 0.2-0.4m with the distance of jar body bottom.
The utility model discloses eliminate thick liquid density measurement system of adhesion bubble in thick liquid, further, air exhaust device includes the exhaust tube that is located the top of the jar body and the air pump that is connected with the exhaust tube; the air exhaust pipe is an anti-corrosion pipeline with the diameter of 80-108 mm, one end of the air exhaust pipe is communicated with the interior of the tank body, the other end of the air exhaust pipe vertically extends upwards to form a vertical section, the height of the vertical section is 0.3-1 m, the top end of the vertical section bends downwards to form a bent section, and an air outlet of the bent section is connected with the air pump.
The utility model discloses eliminate thick liquid density measurement system of adhesion bubble in thick liquid, it is further, defoaming tank deck portion still is provided with the overflow pipe, and the overflow pipe other end is connected with the trench
The utility model discloses eliminate the thick liquid density measurement system of adhesion bubble in the thick liquid, it is further, first shutoff valve and first flow control valve have set gradually on the thick liquid conveyer pipe.
The utility model discloses eliminate thick liquid density measurement system of adhesion bubble in thick liquid, it is further, the sparge water system includes first flushing pipe and second flushing pipe, on the first flushing pipe behind the first solenoid valve of series connection and the survey buret between second shutoff valve and the densimeter is connected, on the second flushing pipe behind the second solenoid valve of series connection and the thick liquid duct connections between first shutoff valve and the first flow control valve.
The utility model discloses eliminate thick liquid density measurement system of adhesion bubble in thick liquid and compare with prior art, have following beneficial effect:
the utility model leads out the slurry in the slurry pool and then sends the slurry into the defoaming tank, defoaming is carried out by ultrasonic, the coverage area is wide, action dead angles which often appear in mechanical defoaming are avoided, and the defoaming effect is good; the slurry after defoaming reenters the densimeter to be measured, the influence of adhesive bubbles in the slurry on the densimeter is effectively avoided, the accuracy of densimeter measurement is greatly improved, the defoaming slurry after detection enters a trench and then returns to the absorption tower to be recycled, the bubble content in a slurry circulating system is greatly reduced, the stability of the operation of a desulfurization system is improved, the slurry density of the absorption tower can be accurately controlled, the power consumption of the system in operation is reduced, the abrasion degree of a slurry pipeline is reduced, and the operation cost of the desulfurization system is reduced.
The defoaming tank of the utility model is provided with the air exhaust device at the top part, which is used for balancing the internal pressure of the defoaming tank and the external atmospheric pressure, reducing the potential safety hazard and ensuring the smooth flowing and measurement of the slurry; the overflow pipe is arranged at the top of the defoaming tank, so that part of slurry which is not defoamed at the top of the defoaming tank can be directly conveyed into a trench, and the safe operation of the defoaming tank is ensured;
the present invention will be further explained with reference to the drawings.
Drawings
Fig. 1 is a schematic structural diagram of a slurry density measuring system for eliminating adhesive bubbles in slurry according to the present invention.
Reference numerals:
1-an absorption column; 21-tank body; 22-an overflow pipe; 3-an ultrasonic generator; 41-an exhaust pipe; 42-an air pump; 5-pH meter; 6-slurry conveying pipe; 61-a first shut-off valve; 62-a first flow control valve; 7-measuring tube; 71-a second shut-off valve; 72-a second flow control valve; 8-a densitometer; 91-a first flush tube; 92-a second flush tube; 93-a first solenoid valve; 94-a second solenoid valve; 95-trench.
Detailed Description
As shown in figure 1, the utility model discloses eliminate thick liquid density measurement system of adhesion bubble in thick liquid includes defoaming jar, density measurement device and wash water system.
The defoaming tank is connected with a slurry pool of the absorption tower 1 through a slurry conveying pipe 6, a liquid inlet of the slurry conveying pipe 6 is connected with the side wall of the absorption tower 1 and is positioned below the operating liquid level of the slurry inside and at a position which is 1/3-1/2 away from the liquid level, a liquid outlet is connected with the side wall of the top of the defoaming tank, and the slurry conveying pipe 6 is sequentially provided with a first shut-off valve 61 and a first flow control valve 62; the bottom of the defoaming tank is connected with a measuring pipe 7, a second shut-off valve 71, a densimeter 8 and a second flow control valve 72 are sequentially connected in series on the measuring pipe 7, and the second flow control valve 72 is used for accurately controlling the flow of the slurry passing through the densimeter 8; the outlet of the measuring tube 7 is connected to a gutter 95.
The defoaming tank comprises a tank body 21, an ultrasonic generator 3, an air extractor 41 and a pH meter 5, the lower section of the tank body 21 is a cone with a large upper caliber and a small lower caliber, and the bottom of the cone is a liquid outlet; the number of the ultrasonic generators 3 is 2, the ultrasonic generators are horizontally and symmetrically arranged on the side wall in the tank body 21, the distance between the ultrasonic generators and the bottom of the tank body 21 is 0.2-0.4m, so that the defoaming effect of the internal slurry is ensured, the power of the ultrasonic generators 3 is more than 2kW, and the ultrasonic frequency is not less than 15 kHz; the air extracting device 41 comprises an air extracting pipe and an air pump 42 which are positioned at the top of the tank body 21, the air extracting pipe is an anticorrosive pipeline with the diameter of 80-108 mm, one end of the air extracting pipe is communicated with the inside of the tank body 21, the other end of the air extracting pipe vertically extends upwards to form a vertical section, the height of the vertical section is 0.3-1 m, and the setting height of the anticorrosive pipeline with the diameter of 80mm is 1m and the setting height of the anticorrosive pipeline with the diameter of 108mm is 0.3 m; the top end of the vertical section is bent downwards to form a return section, and the air outlet of the return section is connected with an air pump 42; the pH meter 5 is positioned at the top of the tank body 21 and vertically extends downwards into the tank body 21.
The top of the defoaming tank is also provided with an overflow pipe 22, and the other end of the overflow pipe 22 is connected with a trench 95.
The flushing water system comprises a first flushing pipe 91 and a second flushing pipe 92, wherein the first flushing pipe 91 is connected with a first electromagnetic valve 93 in series and then is connected with a measuring pipe 7 between a second shutoff valve 71 and a densimeter 8, and the second flushing pipe 92 is connected with a second electromagnetic valve 94 in series and then is connected with a slurry conveying pipe 6 between the first shutoff valve 61 and a first flow control valve 62.
The utility model discloses eliminate slurry density measurement system's of adhesion bubble measurement method in slurry, including following step:
opening a first shut-off valve 61, adjusting a first flow control valve 62, enabling slurry in a slurry tank of the absorption tower 1 to flow into a defoaming tank from top to bottom, and breaking adhesive bubbles in the slurry under the action of an ultrasonic generator 3;
the height difference between the slurry flowing into the defoaming tank and the overflow pipe of the defoaming tank forms a parabolic falling body shape, and partial bubbles overflow the slurry in the process of falling from top to bottom; the slurry in the defoaming tank flows from top to bottom, and after passing through the ultrasonic defoaming device, adhesive bubbles in slurry particles can be eliminated, and the bubbles and the slurry move in the reverse direction to overflow the liquid level. Bubbles formed by slurry in a free falling body and bubbles eliminated by ultrasonic remain on the upper part of the liquid level of the defoaming tank, the slurry enters the trench from the overflow pipe, and when the bubbles are filled in the overflow pipe and on the upper part of the slurry, the siphonage phenomenon is easily formed. The air extractor can extract the bubbles in the slurry out of the tank body at any time, a small amount of bubbles remain on the upper part of the slurry in the defoaming tank, and the normal operation of the slurry in the defoaming tank is maintained;
step two, opening a second flow control valve 72 to enable the slurry in the defoaming tank to fully enter the densimeter 8, adjusting the second flow control valve 72 and controlling the flow of the slurry passing through the densimeter 8 to be 8-12m3Reading a densimeter 8 and recording the density of the slurry, and then flowing the slurry into a trench 95 for temporary storage;
reading and recording the pH value of the slurry through a pH meter 5;
step four, closing the second shut-off valve 71 every 1-2 hours, opening the first electromagnetic valve 93, washing the measuring pipe 7 and the densimeter 8, and allowing washing water to enter the trench 95;
fifthly, every 1-2 h; closing the first shut-off valve 61, opening the second electromagnetic valve 94, flushing the slurry delivery pipe 6, the first flow control valve 62 and the pH meter 5, and discharging the flushing water into the trench 95;
and step six, when the liquid level of the slurry in the trench 95 reaches a set height, the slurry returns to the absorption tower 1 for recycling.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (8)
1. The slurry density measuring system for eliminating adhesive bubbles in slurry is characterized in that: comprises a defoaming tank, a density measuring device and a washing water system; the defoaming tank is connected with a slurry pool of the absorption tower (1) through a slurry conveying pipe (6), a liquid outlet of the slurry conveying pipe (6) is connected with the side wall of the top of the defoaming tank, a liquid outlet of the bottom of the defoaming tank is connected with a measuring pipe (7), a second shut-off valve (71), a densimeter (8) and a second flow control valve (72) are sequentially connected in series on the measuring pipe (7), and a liquid outlet of the measuring pipe (7) is connected with a trench (95); the defoaming tank comprises a tank body (21), an ultrasonic generator (3) arranged on the inner side wall of the tank body (21), an air extractor (41) arranged at the top of the tank body (21) and a pH meter (5).
2. The slurry density measurement system for eliminating adherent air bubbles in a slurry according to claim 1, wherein: the liquid inlet of the slurry conveying pipe (6) is connected with the side wall of the absorption tower (1), and the liquid inlet is positioned below the running liquid level of the slurry inside and at a position which is 1/3-1/2 of the liquid level.
3. The slurry density measurement system for eliminating adherent air bubbles in a slurry according to claim 1, wherein: the lower section of the tank body (21) is a cone with a large upper caliber and a small lower caliber, and the bottom of the cone is a liquid outlet.
4. The slurry density measurement system for eliminating adherent air bubbles in a slurry according to claim 1, wherein: the number of the ultrasonic generators (3) is 2, the ultrasonic generators are horizontally and symmetrically arranged, and the distance between the ultrasonic generators and the bottom of the tank body (21) is 0.2-0.4 m.
5. The slurry density measurement system for eliminating adherent air bubbles in a slurry according to claim 1, wherein: the air extracting device (41) comprises an air extracting pipe positioned at the top of the tank body (21) and an air pump (42) connected with the air extracting pipe; the air exhaust pipe is an anti-corrosion pipeline with the diameter of 80-108 mm, one end of the air exhaust pipe is communicated with the inside of the tank body (21), the other end of the air exhaust pipe vertically extends upwards to form a vertical section, the height of the vertical section is 0.3-1 m, the top end of the vertical section is bent downwards to form a bent section, and an air outlet of the bent section is connected with the air pump (42).
6. The slurry density measurement system for eliminating adherent air bubbles in a slurry according to claim 1, wherein: the top of the defoaming tank is also provided with an overflow pipe (22), and the other end of the overflow pipe (22) is connected with a trench (95).
7. The slurry density measurement system for eliminating adherent air bubbles in a slurry according to claim 1, wherein: and the slurry conveying pipe (6) is sequentially provided with a first shut-off valve (61) and a first flow control valve (62).
8. The slurry density measurement system for eliminating adherent air bubbles in a slurry according to claim 7, wherein: the flushing water system comprises a first flushing pipe (91) and a second flushing pipe (92), wherein the first flushing pipe (91) is connected with a first electromagnetic valve (93) in series and then is connected with a measuring pipe (7) between a second shut-off valve (71) and a densimeter (8), and the second flushing pipe (92) is connected with a second electromagnetic valve (94) in series and then is connected with a slurry conveying pipe (6) between the first shut-off valve (61) and a first flow control valve (62).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920650416.6U CN209894635U (en) | 2019-05-08 | 2019-05-08 | Slurry density measuring system for eliminating adhesive bubbles in slurry |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920650416.6U CN209894635U (en) | 2019-05-08 | 2019-05-08 | Slurry density measuring system for eliminating adhesive bubbles in slurry |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111037782A (en) * | 2020-01-16 | 2020-04-21 | 湖南海普明科技有限公司 | System and method for eliminating bubbles in contact lens liquid injection process |
| CN111175182A (en) * | 2020-01-08 | 2020-05-19 | 华电内蒙古能源有限公司包头发电分公司 | Method for measuring density of desulfurized limestone slurry of thermal power plant |
| CN111359266A (en) * | 2020-04-09 | 2020-07-03 | 北京国电龙源环保工程有限公司 | System for defoaming slurry outside desulfurization absorption tower and measuring density and construction method |
| CN112304805A (en) * | 2020-11-27 | 2021-02-02 | 大连海事大学 | Slurry density measuring device and density measuring method |
-
2019
- 2019-05-08 CN CN201920650416.6U patent/CN209894635U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175182A (en) * | 2020-01-08 | 2020-05-19 | 华电内蒙古能源有限公司包头发电分公司 | Method for measuring density of desulfurized limestone slurry of thermal power plant |
| CN111037782A (en) * | 2020-01-16 | 2020-04-21 | 湖南海普明科技有限公司 | System and method for eliminating bubbles in contact lens liquid injection process |
| CN111359266A (en) * | 2020-04-09 | 2020-07-03 | 北京国电龙源环保工程有限公司 | System for defoaming slurry outside desulfurization absorption tower and measuring density and construction method |
| CN111359266B (en) * | 2020-04-09 | 2022-04-22 | 国能龙源环保有限公司 | System for defoaming slurry outside desulfurization absorption tower and measuring density and construction method |
| CN112304805A (en) * | 2020-11-27 | 2021-02-02 | 大连海事大学 | Slurry density measuring device and density measuring method |
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Address after: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee after: Guoneng Longyuan environmental protection Co.,Ltd. Address before: 100039 room 911, 1 building, 16 West Fourth Ring Road, Haidian District, Beijing. Patentee before: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENGINEERING Co.,Ltd. |