CN213643714U - Novel double-tower double-circulation absorption tower for measuring PH value in desulfurization - Google Patents
Novel double-tower double-circulation absorption tower for measuring PH value in desulfurization Download PDFInfo
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- CN213643714U CN213643714U CN202022073471.9U CN202022073471U CN213643714U CN 213643714 U CN213643714 U CN 213643714U CN 202022073471 U CN202022073471 U CN 202022073471U CN 213643714 U CN213643714 U CN 213643714U
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Abstract
The utility model provides a novel two tower bicirculating absorption towers of measurement pH value of desulfurization relates to flue gas treatment technical field to solve the desulfurization absorption tower equipment loss that exists among the prior art fast, the extravagant serious technical problem of raw materials. The device includes the one-level desulfurizing tower, second grade desulfurizing tower and the mechanism of falling the thick liquid, the gas vent of one-level desulfurizing tower and the air inlet of second grade desulfurizing tower pass through wind channel intercommunication and the reaction tank of second grade desulfurizing tower through the mechanism of falling the thick liquid intercommunication one-level desulfurizing tower to in making the interior thick liquid of second grade desulfurizing tower can pour into the one-level desulfurizing tower through the mechanism of falling the thick liquid, one-level desulfurizing tower and second grade desulfurizing tower are respectively through supplying the external limestone slurry case of thick liquid pipe intercommunication. The device has high slurry utilization rate and reduces equipment loss.
Description
Technical Field
The utility model belongs to the technical field of the flue gas processing technique and specifically relates to a novel two tower dual cycle absorption towers of measurement pH value of desulfurization are related to.
Background
In a wet desulphurization system, the pH value of absorption tower slurry is one of parameters needing to be detected and controlled in the operation of an FGD device, and is one of main factors influencing the desulphurization rate, the oxidation rate, the utilization rate of an absorbent and the system scaling, and the pH value of the absorption tower slurry is high, so that the absorption tower slurry is not beneficial to the oxidation and crystallization of a reaction product calcium sulfite and plays a role in inhibiting the generation of a byproduct gypsum. Lower PH values are detrimental to sulfur dioxide absorption.
Among the prior art, the incessant confession lime stone thick liquid is in order to control the pH value to providing in the absorption tower usually, and the pH value is measured and is inaccurate when easily causing the pH value of thick liquid in the absorption tower high-time low, causes the extravagant serious and easy scale deposit of equipment of material to cause the jam.
Disclosure of Invention
The utility model aims at providing a novel two tower bicirculating absorption towers of measurement pH value of desulfurization to solve the technical problem that the material that exists is extravagant serious among the prior art, equipment is easy to scale deposit and is blockked up and cause the life-span to reduce. The utility model provides a great deal of technological effect (simple structure, with low costs, convenient to use) that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
The utility model provides a pair of novel two tower bicirculating absorption towers of PH value of desulfurization, including one-level desulfurizing tower, second grade desulfurizing tower and the mechanism of falling the thick liquid, be provided with the sampling mechanism who measures its interior PH value usefulness in the second grade desulfurizing tower, the gas vent of one-level desulfurizing tower with the air inlet of second grade desulfurizing tower passes through the wind channel intercommunication, the reaction tank of one-level desulfurizing tower with the reaction tank of second grade desulfurizing tower passes through the mechanism of falling the thick liquid intercommunication, so that slurry in the one-level desulfurizing tower with slurry in the second grade desulfurizing tower can pass through the mechanism of falling the thick liquid circulation, the one-level desulfurizing tower with the second grade desulfurizing tower is respectively through supplying the external limestone slurry case of thick liquid pipe intercommunication.
Preferably, sampling mechanism include along vertical direction interval set up in first sampling tube on the one-level desulfurizing tower, with the first PH value measuring tank of first sampling tube intercommunication, along vertical direction interval set up in second sampling tube on the second grade desulfurizing tower, with the second PH value measuring tank of second sampling tube intercommunication, first sampling tube with the second sampling tube penetrates respectively in the one-level desulfurizing tower with in the second grade desulfurizing tower.
Preferably, the mechanism of falling thick liquid includes second grade swirler, arranges thick liquid pipe and defeated thick liquid pipe, the thick liquid mouth that advances of second grade swirler passes through arrange thick liquid pipe intercommunication the reaction tank of second grade desulfurizing tower, the underflow mouth of second grade swirler passes through the pipeline intercommunication the one-level desulfurizing tower, the overflow mouth of second grade swirler passes through the pipeline intercommunication the second grade desulfurizing tower, arrange thick liquid pipe and pass through defeated thick liquid pipe intercommunication the one-level desulfurizing tower, defeated thick liquid pipe with arrange and all install the valve of its switching of control on the thick liquid pipe, the reaction tank of one-level desulfurizing tower passes through pipeline and gypsum swirler intercommunication.
Preferably, the device further comprises an accident box, wherein a water inlet of the accident box is communicated with the slurry discharge pipe, the first-stage desulfurizing tower and a water outlet of the accident box are communicated with the first-stage desulfurizing tower and the second-stage desulfurizing tower, so that slurry in the first-stage desulfurizing tower or/and the second-stage desulfurizing tower can flow into the accident box and flows into the first-stage desulfurizing tower or/and the second-stage desulfurizing tower from the accident box.
Preferably, the one-level desulfurizing tower with the second grade desulfurizing tower all corresponds the intercommunication have filtrate water tank and drain pit just the one-level desulfurizing tower with the second grade desulfurizing tower all corresponds and installs water supply equipment and oxygen supply equipment, with to the one-level desulfurizing tower with provide process water and oxygen in the second grade desulfurization.
Preferably, still include and wash the mechanism, the one-level desulfurizing tower with the equal accordant connection of second grade desulfurizing tower has one wash the mechanism, wash the mechanism and include water pump and wash water pitcher, the water pump is installed wash on the pipeline of water pitcher and desulfurizing tower intercommunication, wash water pitcher and external water pipe intercommunication.
The utility model provides a pair of novel two tower bicirculating absorption towers of measurement pH value of desulfurization, lie in with the difference of prior art, this device is through the reaction tank intercommunication of the reaction tank of mechanism with the second grade desulfurizing tower and one-level desulfurizing tower of falling the oar, according to the density or the liquid level condition of second grade desulfurizing tower, pour the thick liquid into the one-level desulfurizing tower from the second grade desulfurizing tower in, or pour into the second grade desulfurizing tower from the one-level desulfurizing tower in to separate out the gypsum, improve the utilization ratio of material and improve and exhaust-gas treatment is effectual.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of the overall structure of a novel desulfurization measuring double-tower double-circulation absorption tower.
In the figure: 1. a first-stage desulfurizing tower; 2. a secondary desulfurization tower; 3. a secondary cyclone; 4. a gypsum cyclone; 5. a slurry discharge pipe; 6. an accident box; 7. a first PH measuring tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The pH value of the slurry in the desulfurization absorption tower is high, which means that the alkalinity is large, on one hand, the slurry is beneficial to the chemical reaction between alkaline solution and acid gas, and is beneficial to sulfur dioxide absorption, and the desulfurization efficiency of single circulation can be improved, on the other hand, the high pH is not beneficial to the oxidation and crystallization of reaction product calcium sulfite, and plays a role in inhibiting the generation of byproduct gypsum. The lower PH value can enhance the dissolution of limestone, improve the oxidation of sulfite, improve the utilization rate of limestone and prevent the scaling of a system. (A high pH favors absorption of SO2 but does not favor dissolution of limestone, whereas a low pH favors dissolution of limestone but does not favor absorption of SO 2).
The utility model provides a novel two tower dual cycle absorption towers of PH value of desulfurization, as shown in figure 1, this device is including the mechanism of sizing mixing, one-level desulfurizing tower 1 and second grade desulfurizing tower 2 series operation and the gas vent of one-level desulfurizing tower 1 communicate with the air inlet of second grade desulfurizing tower 2, the flue gas at first gets into one-level desulfurizing tower 1 back through the air inlet of one-level desulfurizing tower 1, get into second grade desulfurizing tower 2 through the air inlet of second grade desulfurizing tower 2 and supply the processing, this device utilizes reaction mechanism and physical characteristic between alkaline solution and the acid gas in the above-mentioned desulfurization absorption tower, make the PH value in the one-level desulfurizing tower 1 be less than the PH value in the second grade desulfurizing tower 2, one-level desulfurizing tower 1 is used for absorbing most sulfur dioxide, the gypsum is appeared in the oxidation simultaneously; the second-stage desulfurizing tower 2 is used for washing sulfur dioxide escaping from the first-stage desulfurizing tower 1. Density and liquid level constantly change in the operation of second grade desulfurizing tower 2, the thick liquid of second grade desulfurizing tower 2 is through mechanism or the mud discharging pipe intercommunication one-level desulfurizing tower 1 of falling thick liquid, so that the thick liquid can get into in the one-level desulfurizing tower 1 in the second grade desulfurizing tower 2, the thick liquid can get into in the second grade desulfurizing tower 2 in the one-level desulfurizing tower 1, maintain the stability of two desulfurizing tower thick liquids, guarantee the sustained reaction of whole system, and simultaneously, one-level desulfurizing tower 1 and second grade desulfurizing tower 2 are respectively through supply thick liquid pipeline and external limestone slurry case intercommunication, lead to pipe and external water supply equipment intercommunication and oxidation fan pass through tuber pipe intercommunication one-level desulfurizing tower 1/second grade desulfurizing tower 2 in order to the oxygen suppliment in the desulfurization double tower.
A novel double-tower double-circulation absorption tower for measuring PH value of desulfurization also comprises a sampling mechanism for measuring the PH value in the tower, the desulfurization absorption tower is a large-scale slurry container with large tower diameter and high liquid level, the slurry is supplied into the tower from one position of the desulfurization tower by a limestone slurry supply pipeline, the pH value of each position of the desulfurization tower is inevitably different under the influence of factors such as dissolution of limestone, stirring effect of a stirrer, the circulation effect of the number of running circulation pumps and the like, the deviation of the PH value of the desulfurization tower is more than 0.3, and the slurry supply amount and the desulfurization efficiency of the desulfurization tower are greatly influenced, according to different heights of the absorption tower, a plurality of first sampling pipes are arranged at intervals along the vertical direction of a first-level desulfurization tower, a plurality of second sampling pipes are arranged at intervals along the vertical direction of a second-level desulfurization tower, any first sampling pipe is communicated with a first PH value measuring tank 7, and any second sampling pipe is communicated with a second PH value measuring tank, the first sampling tube and the second sampling tube penetrate into the first-stage desulfurizing tower and the second-stage desulfurizing tower respectively. Furthermore, the first sampling tube and the second sampling tube are respectively provided with three sampling tubes, the first sampling tube and the second sampling tube are respectively provided with a control valve for controlling the opening and closing of the sampling tubes, so that the aim of respectively measuring or mixing the measuring can be realized according to the sampling at different heights of the desulfurizing tower, the more comprehensive measuring mode assists the accurate control of the pH value of the absorption tower, and the optimal pH value ranges of the first-stage desulfurizing tower 1 and the second-stage desulfurizing tower 2 are respectively 4.8-5.2 and 5.4-5.8. The three sampling points of the first sampling pipe/the second sampling pipe are respectively positioned at different positions and different directions of the desulfurizing tower.
The mechanism of falling thick liquid includes second grade swirler 3, arrange thick liquid pipe 5, defeated thick liquid pipe, second grade swirler 3 is through arranging the reaction tank of thick liquid pipe 5 intercommunication second grade desulfurizing tower 2, the underflow opening of second grade swirler 3 passes through pipeline intercommunication one-level desulfurizing tower 1, the overflow mouth of second grade swirler 3 passes through pipeline intercommunication second grade desulfurizing tower 2, it communicates one-level desulfurizing tower 1 to arrange thick liquid pipe 5 through defeated thick liquid pipe, all install the valve of its switching of control on defeated thick liquid pipe and the row thick liquid pipe 5, the reaction tank of one-level desulfurizing tower 1 passes through pipeline and gypsum swirler 4 intercommunication. The slurry discharge pipe 5 is provided with a gypsum slurry discharge pump. A gypsum slurry discharging pump is arranged on the pipeline between the primary desulfurizing tower 1 and the gypsum cyclone 4.
The utility model provides a novel two tower bicirculating absorption tower of measuring PH value of desulfurization still includes accident box 6 and two way thick liquid pipes 5 of arranging, arrange thick liquid pipe 5 intercommunication one-level desulfurizing tower 1 all the way, another way arranges thick liquid pipe 5 intercommunication second grade desulfurizing tower 2, and two way thick liquid pipes 5 pass through three-way valve or three-way pipe intercommunication accident box 6 advance the thick liquid mouth, all installed solenoid valve or manual valve on arranging thick liquid pipe 5 wantonly all the way, down to pouring the thick liquid in accident box 6 through opening the valve under the accident situation, and the thick liquid of accident box 6 passes through pump and pipeline and communicates one-level desulfurizing tower 1 and second grade desulfurizing tower 2 respectively, with can return the thick liquid to in one-level desulfurizing tower 1 and the second grade desulfurizing tower 2 respectively.
The utility model provides a novel two tower dual cycle absorption towers of measurement PH value of desulfurization still includes filtrating water tank and drainage pit, and arbitrary desulfurizing tower in the two towers of desulfurization all has filtrating water tank and drainage pit through the pipe connection, and the thick liquid gets into drainage pit or the filtrating water through the dewatering system output in the desulfurizing tower can also follow it and get into in the desulfurizing tower in order to form circulation system.
One-level desulfurizing tower 1 and second grade desulfurizing tower 2 are all including a jar body, the internal defroster that distributes in proper order from the top down that is provided with of jar, spray thrower and reaction tank, the agitator that the stirring thick liquid was used has been installed in the reaction tank, the spray thrower passes through shower intercommunication reaction tank, the shower is connected with the circulating pump, so that the circulating pump work is carried the thick liquid in with the reaction tank to the spray thrower and is sprayed, the air inlet of one-level desulfurizing tower 1 and second grade desulfurizing tower 2 is all seted up in jar side wall and is located the region between spray thrower and the reaction tank, the defroster of second grade desulfurizing tower 2 sets up to the wet electricity defroster, the gas vent of one-level desulfurizing tower 1 and second grade desulfurization all is located the top of defroster, so that the gas after spraying gets into next.
The utility model provides a novel two tower bicirculating absorption towers of PH value of desulfurization still includes the washing mechanism, one-level desulfurizing tower 1 and second grade desulfurizing tower 2 match the intercommunication respectively and wash the mechanism, the washing mechanism includes the water pump, process water tank and flushing pipe and water pump are installed on the flushing pipe, process water tank and external water pipe intercommunication, with supply water in to process water tank through external water pipe, the flushing pipe includes main flushing pipe and a plurality of branch washing pipe of being connected with main flushing pipe, a plurality of branch washing pipes are used for washing the accessory equipment of one-level desulfurizing tower 1/second grade desulfurizing tower 2 respectively, the reaction tank and the pipeline with accident case 6 intercommunication, the humidification water etc. of oxidation wind. Valves are arranged on the slurry supply pipeline of the first-stage desulfurizing tower 1, the slurry supply pipeline of the second-stage desulfurizing tower 2, the water pipe of the first-stage desulfurizing tower 1 and the water pipe of the second-stage desulfurizing tower 2.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a novel two tower bicirculating absorption towers of PH value of desulfurization, a serial communication port, including one-level desulfurizing tower, second grade desulfurizing tower, the mechanism of sizing falls, be provided with the sampling mechanism who measures its internal PH value usefulness in the second grade desulfurizing tower, the gas vent of one-level desulfurizing tower with the air inlet of second grade desulfurizing tower passes through the wind channel intercommunication, the reaction tank of one-level desulfurizing tower with the reaction tank of second grade desulfurizing tower passes through the mechanism of sizing falls intercommunication, so that slurry in the one-level desulfurizing tower with slurry in the second grade desulfurizing tower can pass through the mechanism of sizing falls circulates, the one-level desulfurizing tower with the second grade desulfurizing tower is respectively through supplying the external limestone slurry case of slurry pipe intercommunication.
2. The novel double-tower double-circulation absorption tower for measuring the PH value of desulfurization as claimed in claim 1, wherein the sampling mechanism comprises first sampling pipes arranged on the primary desulfurization tower at intervals along the vertical direction, first PH value measurement tanks communicated with the first sampling pipes, second sampling pipes arranged on the secondary desulfurization tower at intervals along the vertical direction, and second PH value measurement tanks communicated with the second sampling pipes, wherein the first sampling pipes and the second sampling pipes respectively penetrate into the primary desulfurization tower and the secondary desulfurization tower.
3. The novel double-tower double-circulation absorption tower for measuring the PH value in desulfurization as claimed in claim 2, wherein the slurry pouring mechanism comprises a secondary cyclone, a slurry discharging pipe and a slurry conveying pipe, a slurry inlet of the secondary cyclone is communicated with a reaction tank of the secondary desulfurization tower through the slurry discharging pipe, a bottom flow port of the secondary cyclone is communicated with the primary desulfurization tower through a pipeline, an overflow port of the secondary cyclone is communicated with the secondary desulfurization tower through a pipeline, the slurry discharging pipe is communicated with the primary desulfurization tower through the slurry conveying pipe, valves for controlling the opening and the closing of the slurry conveying pipe and the slurry discharging pipe are arranged on the slurry conveying pipe and the slurry conveying pipe, and the reaction tank of the primary desulfurization tower is communicated with the gypsum cyclone through a pipeline.
4. The novel double-tower double-circulation absorption tower for measuring the PH value of sulfur removal as claimed in claim 3, further comprising an accident box, wherein the water inlet of the accident box is communicated with the slurry discharge pipe and the first-stage desulfurization tower, and the water outlet of the accident box is communicated with the first-stage desulfurization tower and the second-stage desulfurization tower, so that the slurry in the first-stage desulfurization tower or/and the second-stage desulfurization tower can flow into the accident box and from the accident box into the first-stage desulfurization tower or/and the second-stage desulfurization tower.
5. The novel double-tower double-circulation absorption tower for measuring the PH value of desulfurization as claimed in claim 4, wherein the first-stage desulfurization tower and the second-stage desulfurization tower are correspondingly communicated with a filtrate water tank and a drainage pit, and are correspondingly provided with a water supply device and an oxygen supply device so as to provide process water and oxygen into the first-stage desulfurization tower and the second-stage desulfurization tower.
6. The novel double-tower double-circulation absorption tower for measuring the PH value of sulfur removal according to claim 1, further comprising a flushing mechanism, wherein the flushing mechanism is connected to both the primary desulfurization tower and the secondary desulfurization tower, the flushing mechanism comprises a water pump and a flushing water tank, the water pump is arranged on a pipeline through which the flushing water tank is communicated with the desulfurization tower, and the flushing water tank is communicated with an external water pipe.
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| CN202022073471.9U CN213643714U (en) | 2020-09-21 | 2020-09-21 | Novel double-tower double-circulation absorption tower for measuring PH value in desulfurization |
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| CN202022073471.9U CN213643714U (en) | 2020-09-21 | 2020-09-21 | Novel double-tower double-circulation absorption tower for measuring PH value in desulfurization |
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