CN218938243U - Comprehensive device for measuring slurry density and pH value of flue gas desulfurization tower by limestone-gypsum method - Google Patents

Comprehensive device for measuring slurry density and pH value of flue gas desulfurization tower by limestone-gypsum method Download PDF

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CN218938243U
CN218938243U CN202223299038.2U CN202223299038U CN218938243U CN 218938243 U CN218938243 U CN 218938243U CN 202223299038 U CN202223299038 U CN 202223299038U CN 218938243 U CN218938243 U CN 218938243U
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slurry
main pipeline
pressure transmitter
valve
flue gas
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李彦贺
张建帅
贺文杰
何冲
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Aerospace Environmental Engineering Co Ltd
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Aerospace Environmental Engineering Co Ltd
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Abstract

The utility model discloses a comprehensive device for measuring slurry density and pH value of a flue gas desulfurization tower by a limestone-gypsum method, which can be connected with the flue gas desulfurization tower, wherein a slurry section is arranged in the flue gas desulfurization tower, the device comprises a slurry density measuring device, a slurry circulation main pipeline, a pH meter flushing isolating valve, a pH meter flushing valve, a pH meter, a circulating pump inlet main pipeline communicating valve and a slurry circulation main pipeline emptying valve, and the slurry density measuring device is connected with the slurry circulation main pipeline. The device has the advantages that the gas in the connecting tee joint of the pressure transmitter or the pressure difference transmitter is eliminated, so that the calculated slurry density is closer to the actual density, the detection precision is improved, meanwhile, the electric power is saved, the energy is saved, and meanwhile, the labor intensity of maintenance personnel is reduced.

Description

Comprehensive device for measuring slurry density and pH value of flue gas desulfurization tower by limestone-gypsum method
Technical Field
The utility model belongs to the technical field of environmental protection equipment, and particularly relates to a comprehensive device for measuring slurry density and pH value of a flue gas desulfurization tower by a limestone-gypsum method.
Background
At present, the limestone-gypsum desulfurization tower slurry density measuring equipment mainly comprises an upper pressure transmitter and a lower pressure transmitter or a pressure difference transmitter which are arranged on the side wall of an absorption tower or a circulating pump outlet pipeline, and then density calculation is carried out through a formula. Because air can be gradually accumulated in a pipeline matched with the differential pressure transmitter, the data of the pressure transmitter or the differential pressure transmitter is gradually distorted, so that the calculated density and the actual density have larger deviation.
In addition, the prior limestone-gypsum desulfurization tower slurry pH value measuring equipment mainly comprises a drainage tube arranged on the wall of the desulfurization tower, wherein slurry in the desulfurization tower is drained into a slurry tank or a slurry pipe, a pH meter connecting hole is arranged on the side wall of a top cover of the slurry tank or the slurry pipe, a pH meter electrode extends into the slurry tank or the slurry pipe, slurry in the tower led out from the drainage tube flows through the slurry tank or the slurry pipe by means of liquid level difference with the inside of the desulfurization tower, then flows into a pit of the desulfurization tower, and is pumped back into an absorption tower through a pit pump. The pH meter electrode is contacted with the slurry flowing through the slurry tank or the slurry pipe to measure the pH value of the slurry in the desulfurizing tower. The method for measuring the pH value needs to control the amount of the slurry flowing through the slurry tank or the slurry pipe, if the amount of the slurry is smaller, the slurry flowing through the slurry tank or the slurry pipe can be precipitated after flowing for a period of time, and blocking is formed to cause flow break, so that the measurement of the pH value is inaccurate; if the slurry amount is larger, the flow of the corresponding pit pump is larger, the power of the pit pump motor is larger, the power consumption is increased, and the energy is not saved.
Thus, the prior art limestone-gypsum flue gas desulfurization tower slurry density and pH measurement apparatus is not fully satisfactory for use, and there is a need for one or more new related apparatus.
By searching, no patent publication related to the present patent application has been found.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a comprehensive device for measuring the slurry density and the pH value of a flue gas desulfurization tower by a limestone-gypsum method.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the comprehensive device for measuring the slurry density and the pH value of the flue gas desulfurization tower by the limestone-gypsum method can be connected with the flue gas desulfurization tower, a slurry section is arranged in the flue gas desulfurization tower, the device comprises a slurry density measuring device, a slurry circulation main pipeline, a pH meter flushing block valve, a pH meter flushing valve, a pH meter, a circulating pump inlet main pipeline communicating valve and a slurry circulation main pipeline emptying valve, and the slurry density measuring device is connected with the slurry circulation main pipeline;
the slurry circulation main pipeline comprises a vertical main pipeline and a horizontal main pipeline which are communicated, wherein the vertical main pipeline is arranged along the vertical direction, and the horizontal main pipeline is arranged along the horizontal direction; the top of the vertical main pipeline is provided with an opening, the top opening of the vertical main pipeline is communicated with the atmosphere, the bottom of the vertical main pipeline is connected with the horizontal one-end input end of the horizontal main pipeline, and the output end of the horizontal other end of the horizontal main pipeline can be connected with a trench;
the slurry density measuring device comprises a pressure transmitter or a differential pressure transmitter, a pressure transmitter or a differential pressure transmitter isolating valve, a pressure transmitter or a differential pressure transmitter slurry discharging valve, a pressure transmitter or a differential pressure transmitter connecting tee joint, wherein the pressure transmitter or the differential pressure transmitter is tightly connected with a first end of the pressure transmitter or the differential pressure transmitter connecting tee joint, a second end of the pressure transmitter or the differential pressure transmitter connecting tee joint is tightly connected with a slurry section of the flue gas desulfurization tower through a first pipeline, the pressure transmitter or the differential pressure transmitter isolating valve is tightly connected on the first pipeline, slurry in the slurry section of the flue gas desulfurization tower can be connected with the pressure transmitter or the differential pressure transmitter connecting tee joint through the first pipeline, the pressure transmitter or the differential pressure transmitter isolating valve, a third end of the pressure transmitter or the differential pressure transmitter connecting tee joint is tightly connected with a vertical main pipeline through a second pipeline, and the pressure transmitter or the differential pressure transmitter slurry discharging valve is tightly connected on the second pipeline; the bottom of the vertical main pipeline close to the horizontal main pipeline is closely connected with a pH meter flushing isolating valve;
the top opening of the vertical main pipeline is arranged above the upper surface of the slurry in the slurry section of the flue gas desulfurization tower, and the joint of the second pipeline and the vertical main pipeline is arranged below the upper surface of the slurry in the slurry section of the flue gas desulfurization tower;
the pH meter flushing valve is arranged close to the pH meter flushing isolating valve, the pH meter flushing valve is also arranged close to the flushing water pipe, and the horizontal main pipeline is arranged close to the suction inlet of the inlet main pipeline of the circulating pump through the circulating pump inlet main pipeline communicating valve; and a slurry circulation main pipeline emptying valve is tightly connected on the horizontal main pipeline between the circulating pump inlet main pipeline communication valve and the output end of the horizontal other end of the horizontal main pipeline.
Further, the slurry density measuring device is provided with one group or more than two groups at intervals along the vertical direction.
Further, the main slurry circulation pipeline is made of lining rubber steel pipes, 316L or glass fiber reinforced plastics;
further, the pressure transmitter or the pressure difference transmitter connecting tee joint is made of lining rubber steel pipes, 316L or glass fiber reinforced plastics.
The utility model has the advantages and effects that:
1. the comprehensive device for measuring the slurry density and the pH value of the limestone-gypsum flue gas desulfurization tower solves the problems of inaccurate slurry density measurement, inaccurate pH value measurement and energy consumption of a pit pump, and can be applied to the measurement of the slurry density and the pH value of the limestone-gypsum flue gas desulfurization tower. The device has the advantages that the gas in the connecting tee joint of the pressure transmitter or the pressure difference transmitter is eliminated, so that the calculated slurry density is closer to the actual density, the detection precision is improved, meanwhile, the electric power is saved, the energy is saved, and meanwhile, the labor intensity of maintenance personnel is reduced.
2. The slurry density calculated by the device is closer to the actual density, and in the prior art, the inaccuracy of the slurry density is caused by the fact that air enters the pressure transmitter or the pressure difference transmitter connecting tee joint, and the air entering the pressure transmitters or the pressure difference transmitter connecting tee joint at different heights is different, so that the calculated slurry density is distorted.
3. When the device is used, the slurry does not enter the pit any more, and the pit pump is not required to pull the slurry back to the desulfurizing tower, so that the self-flow slurry flow of the pH meter is not required to be considered when the pit pump is selected, the motor power of the pit pump is reduced, and the cost of purchasing the pump is reduced and simultaneously the energy is saved.
3. The device connects the pressure transmitter or the pressure difference transmitter connecting tee joint with the slurry circulation main pipeline, so that slurry in front of the pressure transmitter or the pressure difference transmitter is in a flowing state, and air is not accumulated any more.
5. The main slurry circulation pipeline of the device is connected with the main inlet pipe of the circulating pump, slurry enters the circulating pump, and the slurry does not enter the pit any more, so that the flow of the pit pump is reduced.
Drawings
Fig. 1 is a schematic view of a structural connection of the device of the present utility model.
Detailed Description
The utility model will now be further described in connection with specific examples which are intended to be illustrative only and not limiting in any way.
The raw materials used in the utility model are conventional commercial products unless otherwise specified, the methods used in the utility model are conventional methods in the art unless otherwise specified, and the mass of each substance used in the utility model is conventional. Structures, connection relationships, etc., not described in detail in the present utility model, may be understood as conventional means in the art.
The utility model provides a limestone-gypsum method flue gas desulfurization tower thick liquid density and pH value measurement's integrated device, as shown in FIG. 1, the integrated device can be connected with flue gas desulfurization tower 16 and set up, is provided with thick liquid section (not shown in the figure) in the flue gas desulfurization tower, the device includes thick liquid density measurement device, thick liquid circulation trunk line 5, pH meter wash block valve 6, pH meter wash valve 7, pH meter 8, circulating pump entry trunk line UNICOM valve 9 and thick liquid circulation trunk line blow off valve 10, thick liquid density measurement device is connected with thick liquid circulation trunk line and is set up;
the slurry circulation main pipeline comprises a vertical main pipeline 51 and a horizontal main pipeline 52 which are communicated, wherein the vertical main pipeline is arranged along the vertical direction, and the horizontal main pipeline is arranged along the horizontal direction; the top of the vertical main pipeline is provided with an opening, the top opening of the vertical main pipeline is communicated with the atmosphere, the bottom of the vertical main pipeline is connected with the horizontal one-end input end 54 of the horizontal main pipeline, and the output end 55 of the horizontal other end of the horizontal main pipeline can be connected with the trench 17;
the slurry density measuring device comprises a pressure transmitter or a differential pressure transmitter 1, a pressure transmitter or a differential pressure transmitter isolating valve 2, a pressure transmitter or a differential pressure transmitter slurry discharging valve 3, a pressure transmitter or a differential pressure transmitter connecting tee joint 4, wherein the pressure transmitter or the differential pressure transmitter is tightly connected with a first end of the pressure transmitter or the differential pressure transmitter connecting tee joint, a second end of the pressure transmitter or the differential pressure transmitter connecting tee joint is tightly connected with a slurry section of the flue gas desulfurization tower through a first pipeline 11, the pressure transmitter or the differential pressure transmitter isolating valve is tightly connected on the first pipeline, slurry in the slurry section of the flue gas desulfurization tower can be connected with the pressure transmitter or the differential pressure transmitter connecting tee joint through the first pipeline, the pressure transmitter or the differential pressure transmitter isolating valve, a third end of the pressure transmitter or the differential pressure transmitter connecting tee joint is tightly connected with a vertical main pipeline through a second pipeline 13, and the pressure transmitter or the differential pressure transmitter slurry discharging valve is tightly connected on the second pipeline; the bottom of the vertical main pipeline close to the horizontal main pipeline is closely connected with a pH meter flushing isolating valve, and the pH meter flushing isolating valve can be used for isolating the vertical main pipeline of the pipeline when the pH meter flushing isolating valve needs to be used for flushing, so that slurry in the tower is prevented from entering the horizontal main pipeline;
the top opening of the vertical main pipeline is arranged above the upper surface of the slurry in the slurry section of the flue gas desulfurization tower, and the joint of the second pipeline and the vertical main pipeline is arranged below the upper surface of the slurry in the slurry section of the flue gas desulfurization tower, so that the slurry in the slurry section of the flue gas desulfurization tower can enter the slurry density measuring device and can flow back into the vertical main pipeline from the second pipeline, and cannot overflow from the top opening of the vertical main pipeline;
the horizontal main pipeline is sequentially and closely connected with a plurality of connecting pipelines 53 at intervals, the pH meter flushing valve, the pH meter and the circulating pump inlet main pipeline communicating valve are sequentially and closely arranged on the connecting pipelines, the pH meter flushing valve is arranged close to the pH meter flushing isolating valve, the pH meter flushing valve is also closely connected with the flushing water pipe 14, and the horizontal main pipeline is closely connected with the suction inlet 12 of the inlet main pipeline 15 of the circulating pump (not shown) through the circulating pump inlet main pipeline communicating valve; the slurry circulation main pipeline emptying valve is tightly connected on the horizontal main pipeline between the circulating pump inlet main pipeline communicating valve and the horizontal other end output end of the horizontal main pipeline, and can empty the slurry in the vertical main pipeline and the horizontal main pipeline, so that the slurry can not overflow the pipeline outside when the pH timing slurry is replaced.
In this embodiment, the slurry density measuring device is provided with one or more than two groups at intervals along the vertical direction, and the slurry density value can be more stable by more than two groups, so that the situation that the density distortion is caused by the problem of the meter when only one group of density is generated is prevented.
In this embodiment, the main slurry circulation pipeline is made of lined rubber steel pipe, 316L or glass fiber reinforced plastic, and the three pipelines have excellent corrosion resistance, are most common in the market and have proper price;
the pressure transmitter or the pressure difference transmitter is connected with the tee joint and is made of lining rubber steel pipes, 316L or glass fiber reinforced plastics, and the three pipelines have excellent corrosion resistance, are most common in the market and have proper price.
The working principle and the using method of the comprehensive device for measuring the slurry density and the pH value of the flue gas desulfurization tower by the limestone-gypsum method can be as follows:
after the slurry in the desulfurizing tower is connected with the second end of the tee joint through the first pipeline and the pressure transmitter or the pressure difference transmitter, the density of the slurry in the desulfurizing tower is measured through the pressure transmitter or the pressure difference transmitter, then the slurry enters the main slurry circulation pipeline, then the slurry flows through the pH meter, the pH meter measures the pH value of the slurry in the desulfurizing tower, then the slurry enters the suction inlet of the main inlet pipe of the circulating pump, and finally the slurry is pumped into the desulfurizing tower through the circulating pump.
The liquid circulation main pipeline emptying valve is used when the pipeline overhauls, pH meters and the like need to empty the slurry in the pipeline, and is used for emptying the slurry in the pipeline.
Because the pH meter measures the pH of the slurry, and is in contact with the slurry for a long period of time, it is necessary to periodically wash with water, and the pH meter flush valve functions to flush the pH meter.
The output end of the other horizontal end of the horizontal main pipeline is connected with the trench, so that the purpose is that when the emptying valve is used for opening the slurry in the emptying pipeline, the slurry flows into the trench, and the slurry collecting effect is achieved.
The device has the advantages that the gas in the connecting tee joint of the pressure transmitter or the pressure difference transmitter is eliminated, so that the calculated slurry density is closer to the actual density, the detection precision is improved, meanwhile, the electric power is saved, the energy is saved, and meanwhile, the labor intensity of maintenance personnel is reduced.
Although embodiments of the present utility model have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the disclosure of the embodiments.

Claims (4)

1. A comprehensive device for measuring slurry density and pH value of a flue gas desulfurization tower by a limestone-gypsum method is characterized in that: the comprehensive device can be connected with a flue gas desulfurization tower, a slurry section is arranged in the flue gas desulfurization tower, the device comprises a slurry density measuring device, a slurry circulation main pipeline, a pH meter flushing block valve, a pH meter flushing valve, a pH meter, a circulating pump inlet main pipeline communicating valve and a slurry circulation main pipeline emptying valve, and the slurry density measuring device is connected with the slurry circulation main pipeline;
the slurry circulation main pipeline comprises a vertical main pipeline and a horizontal main pipeline which are communicated, wherein the vertical main pipeline is arranged along the vertical direction, and the horizontal main pipeline is arranged along the horizontal direction; the top of the vertical main pipeline is provided with an opening, the top opening of the vertical main pipeline is communicated with the atmosphere, the bottom of the vertical main pipeline is connected with the horizontal one-end input end of the horizontal main pipeline, and the output end of the horizontal other end of the horizontal main pipeline can be connected with a trench;
the slurry density measuring device comprises a pressure transmitter or a differential pressure transmitter, a pressure transmitter or a differential pressure transmitter isolating valve, a pressure transmitter or a differential pressure transmitter slurry discharging valve, a pressure transmitter or a differential pressure transmitter connecting tee joint, wherein the pressure transmitter or the differential pressure transmitter is tightly connected with a first end of the pressure transmitter or the differential pressure transmitter connecting tee joint, a second end of the pressure transmitter or the differential pressure transmitter connecting tee joint is tightly connected with a slurry section of the flue gas desulfurization tower through a first pipeline, the pressure transmitter or the differential pressure transmitter isolating valve is tightly connected on the first pipeline, slurry in the slurry section of the flue gas desulfurization tower can be connected with the pressure transmitter or the differential pressure transmitter connecting tee joint through the first pipeline, the pressure transmitter or the differential pressure transmitter isolating valve, a third end of the pressure transmitter or the differential pressure transmitter connecting tee joint is tightly connected with a vertical main pipeline through a second pipeline, and the pressure transmitter or the differential pressure transmitter slurry discharging valve is tightly connected on the second pipeline; the bottom of the vertical main pipeline close to the horizontal main pipeline is closely connected with a pH meter flushing isolating valve;
the top opening of the vertical main pipeline is arranged above the upper surface of the slurry in the slurry section of the flue gas desulfurization tower, and the joint of the second pipeline and the vertical main pipeline is arranged below the upper surface of the slurry in the slurry section of the flue gas desulfurization tower;
the pH meter flushing valve is arranged close to the pH meter flushing isolating valve, the pH meter flushing valve is also arranged close to the flushing water pipe, and the horizontal main pipeline is arranged close to the suction inlet of the inlet main pipeline of the circulating pump through the circulating pump inlet main pipeline communicating valve; and a slurry circulation main pipeline emptying valve is tightly connected on the horizontal main pipeline between the circulating pump inlet main pipeline communication valve and the output end of the horizontal other end of the horizontal main pipeline.
2. The integrated device for measuring slurry density and pH value of a flue gas desulfurization tower by a limestone-gypsum method according to claim 1, wherein the integrated device comprises: the slurry density measuring device is provided with one group or more than two groups at intervals along the vertical direction.
3. The integrated device for measuring slurry density and pH value of a flue gas desulfurization tower by a limestone-gypsum method according to claim 1, wherein the integrated device comprises: the main slurry circulation pipeline is made of lining rubber steel pipes, 316L or glass fiber reinforced plastics.
4. A combined device for measuring slurry density and pH of a flue gas desulfurization tower according to any one of claims 1 to 3, wherein: the pressure transmitter or the pressure difference transmitter is connected with the tee joint and is made of lining rubber steel pipes, 316L or glass fiber reinforced plastics.
CN202223299038.2U 2022-12-05 2022-12-05 Comprehensive device for measuring slurry density and pH value of flue gas desulfurization tower by limestone-gypsum method Active CN218938243U (en)

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Application Number Priority Date Filing Date Title
CN202223299038.2U CN218938243U (en) 2022-12-05 2022-12-05 Comprehensive device for measuring slurry density and pH value of flue gas desulfurization tower by limestone-gypsum method

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Application Number Priority Date Filing Date Title
CN202223299038.2U CN218938243U (en) 2022-12-05 2022-12-05 Comprehensive device for measuring slurry density and pH value of flue gas desulfurization tower by limestone-gypsum method

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CN218938243U true CN218938243U (en) 2023-04-28

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