CN117000018B - Alkali liquor spray tower for chloride treatment and application method thereof - Google Patents
Alkali liquor spray tower for chloride treatment and application method thereof Download PDFInfo
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- CN117000018B CN117000018B CN202311274788.0A CN202311274788A CN117000018B CN 117000018 B CN117000018 B CN 117000018B CN 202311274788 A CN202311274788 A CN 202311274788A CN 117000018 B CN117000018 B CN 117000018B
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- waste gas
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- turbulent flow
- spray tank
- suction pump
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- 239000007921 spray Substances 0.000 title claims abstract description 108
- 239000003513 alkali Substances 0.000 title claims abstract description 63
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000002912 waste gas Substances 0.000 claims abstract description 95
- 239000007789 gas Substances 0.000 claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 238000012544 monitoring process Methods 0.000 claims abstract description 25
- 238000005070 sampling Methods 0.000 claims description 33
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 239000000126 substance Substances 0.000 claims description 12
- 230000002378 acidificating effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000006386 neutralization reaction Methods 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 5
- 230000007306 turnover Effects 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims 1
- 239000011347 resin Substances 0.000 abstract description 17
- 229920005989 resin Polymers 0.000 abstract description 17
- 238000001179 sorption measurement Methods 0.000 abstract description 16
- 238000000746 purification Methods 0.000 abstract description 4
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 description 12
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 230000006872 improvement Effects 0.000 description 9
- 238000012856 packing Methods 0.000 description 9
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 239000000945 filler Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- -1 methane hydrocarbon Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
- B01D53/70—Organic halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2045—Hydrochloric acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
Abstract
The invention discloses an alkali liquor spray tower for chloride treatment and a use method thereof, belonging to the field of spray equipment, and comprising the following steps: a spray tank; an alkali liquor input mechanism; the filling mechanism comprises a first filling structure and a second filling structure, the first filling structure comprises an annular table fixedly connected to the inner side surface of the spray tank, a filling layer is circularly arranged on the inner side of the annular table, and the filling in the filling layer is obliquely arranged; the backflow pipe is respectively communicated with the primary inlet area, the turbulent flow area and the monitoring area, is electrically connected with a detection mechanism arranged at the top of the spray tank, is used for detecting the concentration of gas components in the monitoring area and guiding waste gas to the waste gas discharge tube seat or the primary inlet area or the turbulent flow area according to the concentration of the gas components in the monitoring area, solves the problems of low purification efficiency and high purification cost of the existing tail gas treatment system, and ensures that the gas components entering the resin adsorption device all meet industrial production standards.
Description
Technical Field
The invention relates to spraying equipment, in particular to an alkali liquor spraying tower for chloride treatment and a use method thereof.
Background
The spray tower is also called a spray tower, a liquid sprayer is arranged at the top to promote liquid to disperse into tiny liquid drops to drop, waste gas is enabled to contact with liquid drops in a countercurrent mode from the bottom of a container to carry out mass transfer, liquid sprayed out by the spray tower is slightly different according to different waste gas components, alkali liquor is selected to spray to neutralize acidity if waste gas contains acidity, sulfuric acid solution is selected to absorb if waste gas contains alkalinity, acid-base solution is specifically selected according to the nature of waste gas and the self condition of enterprises, no acid-base but oil-containing and dust-containing waste gas can be sprayed and treated through circulating water solution, and filler layers in the spray tower are different according to different components of waste gas, such as plastic filler, ceramic filler, metal filler and the like.
A large amount of tail gas can be generated in the production process of new energy materials, the tail gas contains non-methane total hydrocarbon, hydrogen chloride, acetonitrile and methylene dichloride, if the tail gas is directly discharged into the atmosphere, the tail gas is not in accordance with production standards, and the environment is greatly influenced, so the tail gas needs to be treated before being discharged, the tail gas is usually adsorbed by a resin adsorption device in a spraying mode, but no moisture in the tail gas but contains chloride gas, the tail gas can generate acidity to cause corrosion to equipment after contacting with humid air, alkali lye is needed to be used for washing and removing acidic components, so the service life of the resin of a later-stage resin adsorption device is protected, the spraying tower needs to adopt the spraying tower of the alkali lye, the service life of the resin adsorption device is directly influenced by the reaction between the alkali lye and the waste gas, if the sufficient reaction contact is not carried out in the spraying tower, the service cycle of the resin adsorption device is greatly shortened, the resin filling material needs to be replaced by frequently stopping equipment, the purification efficiency is greatly influenced, and the whole purification cost is greatly improved.
The scheme aims to provide an alkali liquor spray tower for chloride treatment and a use method thereof, which can fully neutralize alkali liquor and waste gas in the spray tower, and can control the concentration of gas components entering a resin adsorption device, so that the gas components entering the resin adsorption device all meet industrial production standards, and the service life of the adsorption device is greatly prolonged.
Disclosure of Invention
The invention provides an alkali liquor spray tower for chloride treatment and a use method thereof, which can effectively solve the problems.
The invention is realized in the following way:
an alkali liquor spray tower for chloride treatment, comprising:
the spray tank comprises an air inlet pipe positioned at one side of the lateral bottom of the spray tank, a waste discharge pipe positioned at the other side of the lateral bottom of the spray tank, and a waste discharge pipe seat arranged at the top of the spray tank;
the alkali liquor input mechanism comprises a pump body which is locked at the outer side of the spray tank and connected with an external pipeline, a conveying pipe which is locked at the top of the pump body and is inserted into the top of the spray tank, and an alkali liquor spray seat which is communicated with the conveying pipe and is arranged in the spray tank;
the filling mechanism comprises a first filling structure and a second filling structure which are respectively arranged in the spray tank from bottom to top, the first filling structure and the second filling structure divide the spray tank into a primary entering area, a turbulent flow area and a monitoring area, the primary entering area, the turbulent flow area and the monitoring area are sequentially arranged at intervals from bottom to top, the first filling structure is identical to the second filling structure, the first filling structure comprises an annular table fixedly connected to the inner side surface of the spray tank, a filling layer which is installed on the inner side of the annular table in a turnover mode, and the filling in the filling layer is obliquely arranged;
the turbulent flow structure is arranged in the turbulent flow area, and the waste gas entering from the primary entering area and alkali liquor falling into the monitoring area are fully mixed in the turbulent flow area;
the return pipe is respectively communicated with the primary inlet area, the turbulent flow area and the monitoring area, and is electrically connected with a detection mechanism arranged at the top of the spray tank, and the detection mechanism is used for detecting the concentration of the gas components in the monitoring area and guiding the waste gas to the waste gas discharge tube seat or the primary inlet area or the turbulent flow area according to the concentration of the gas components in the monitoring area.
As a further improvement, the filling layer comprises a mounting cylinder for containing filling materials, a bearing plate is arranged from the top edge of the mounting cylinder towards two sides, a plurality of ear seats are welded at the bottom of the outer side of the mounting cylinder, the bearing plate is connected with the ear seats through a connecting column, the bearing plate is rotatably arranged on the top surface of the annular table, and the annular table is fixedly clamped with the ear seats.
As a further improvement, a conical disc is integrally formed at the bottom of the tray, and one conical surface of the conical disc is attached to the top surface of the annular table.
As a further improvement, the annular table is of a hollow annular structure and welded on the inner side of the spray tank, the bottom of the annular table is connected with an annular groove, a mobile motor is movably mounted on the inner side of the annular groove, the top of the mobile motor is connected with a plug pin, the plug pin penetrates through any lug seat in the filling layer, and the mobile motor drives the filling layer to rotate on the inner side of the annular table when moving along the annular groove.
As a further improvement, the turbulent flow structure comprises a connecting seat arranged in the turbulent flow area, a plurality of direction-adjusting motors hinged on the connecting seat, and an ultrasonic vibration structure locked at the top of the direction-adjusting motors.
As a further improvement, the detection mechanism is arranged at the top of the alkali liquor spraying seat and comprises a sampling structure arranged at the opening of the top of the spraying tank, a detector which is arranged at the top of the sampling structure and communicated with the sampling structure, a detection pipe which is inserted at the outer side of the detector and extends to the outer part of the spraying tank, and an external cavity suction pump which is fixedly connected at the top of the detector and extends to the exhaust gas discharging pipe seat.
As a further improvement, the sampling structure comprises a circumferential disk with a size smaller than that of the spray tank, the circumferential disk is provided with a plurality of sampling pipes facing the second filling structure, the sampling pipes are communicated with the detector through the circumferential disk, the inner diameter of the spray tank is L, and the distance between the two farthest sampling pipes is 4/5L.
As a further improvement, the backflow pipe comprises a first communicating pipe, a second communicating pipe and a third communicating pipe which are respectively connected with the primary inlet area, the turbulent flow area and the monitoring area, one side of the primary inlet area is connected with a first inner cavity suction pump, one side of the turbulent flow area is connected with a second inner cavity suction pump, and the first inner cavity suction pump, the second inner cavity suction pump and the outer cavity suction pump are all electrically connected with the detector.
The invention also provides a use method of the alkali liquor spray tower for chloride treatment, which is applied to the alkali liquor spray tower for chloride treatment and comprises the following steps:
s1, performing S1; discharging waste gas produced by new energy into a spray tank through an air inlet pipe, enabling the waste gas with acidic substances to be in contact with alkali liquor sprayed by an alkali liquor spray seat in a first filling structure in a rotating state and to perform neutralization reaction, wherein one part of formed products is positioned in the first filling structure, and the other part of formed products falls on the bottom of the spray tank;
s2, performing S2; the waste gas after the first reaction enters a turbulent flow area, the waste gas is scattered after being subjected to turbulent flow of a turbulent flow structure, products in the waste gas are further layered, coarser products fall down and are attached to a first filling structure, and lighter products enter a second filling structure along with the waste gas;
s3, performing S3; the waste gas is fully contacted with alkali liquor in a second filling structure in a rotating state and continuously reacts, one part of the reacted product is positioned in the second filling structure, and the other part of the reacted product passes through the first filling structure and then falls at the bottom of the spray tank;
s4, performing S4; the waste gas after passing through the second filling structure can pass through the detection mechanism, the detection mechanism is sampled in multiple directions, and the waste gas is conveyed to the primary inlet area or the turbulent flow area through the backflow pipe under the condition of unqualified sampling.
As a further improvement, the step S4 specifically includes:
s41, performing S41; the detection mechanism samples and detects the waste gas passing through the detection mechanism, and if the content of the obtained components accords with the rated set value, the first inner cavity suction pump, the second inner cavity suction pump and the outer cavity suction pump are kept in a closed state;
s42, performing S42; the detection mechanism samples and detects the waste gas passing through the detection mechanism, and if the content of the obtained components exceeds the rated set value but does not exceed 5mg/m, the suction pump of the second inner cavity is started, and the suction pump of the first inner cavity and the suction pump of the outer cavity are closed;
s43; the detection mechanism samples and detects the waste gas passing through the detection mechanism, the content of the obtained components exceeds the rated set value by more than 5mg/m and simultaneously starts the first inner cavity suction pump, the second inner cavity suction pump and the outer cavity suction pump.
The beneficial effects of the invention are as follows:
the filling materials in the filling structures are obliquely arranged, so that waste gas in the reverse direction and alkali liquor sprayed from top to bottom can stay in the first filling structure and the second filling structure for a longer time to perform more complete reaction, but because of the overflow and scattering effects of the gas and the liquid, the residence time of the waste gas in the first filling structure and the second filling structure is shorter, the waste gas is easy to flow to the bottom of a spray tank, namely, the waste gas passes through the first filling structure and the second filling structure.
A blank area is arranged between the first filling structure and the second filling structure, in conventional equipment, only a simple transition area is usually provided, only a middle rotation effect is achieved, but in practice, after the waste gas is processed by the first filling structure, if the waste gas directly enters the second filling structure in the same direction, the reaction effect is greatly reduced.
Because the reaction is carried out in the metal-sealed tank body, workers cannot see the internal reaction condition, and if the waste gas of the spray tank to be output does not reach the standard, the waste gas directly enters the resin adsorption device to damage the resin adsorption device, and the damage cannot be remedied.
The filling layer is movably matched with the annular table, and meanwhile, after the filling layer is used for a period of time, the filling layer is required to be removed and replaced by a new filling layer, and the movable mounting and the detachable mounting are required to be realized, so that the filling layer is firstly arranged in the filling layer, and the bearing plate of the filling layer is borne on the top surface of the annular table, and the filling layer is supported by the annular table, so that the filling layer is basically fixed;
and then, the annular groove is formed in the bottom of the annular table, the caliber of the lug seat of the filling layer is smaller than that of the annular groove, and the lug seat can do circular motion in the annular groove, so that the mobile motor is matched with the lug seat, and can drive the filling layer to do circular motion through the lug seat, so that waste gas and alkali liquor passing through the filling layer can be subjected to the action of centrifugal force, the waste gas and alkali liquor stay in the filling layer for a long time, the neutralization reaction time is further improved, and acid substances in the waste gas can be removed more thoroughly.
However, after the reaction is completed, the bearing plate is easy to adhere and absorb on the annular table due to the influence of partial residual substances, and the bearing plate can be blocked to a certain extent when the mobile motor is started to drive the filling layer to rotate next time.
In the invention, as the alkali liquor and the waste gas continuously flow, the turbulent flow structure always has a certain amount of acting medium, so the turbulent flow structure adopts an ultrasonic vibration structure mode to carry out ultrasonic vibration in the whole turbulent flow area, thereby disturbing the waste gas flowing from the first filling structure to the second filling structure and the alkali liquor flowing from the second filling structure to the first filling structure, leading the reaction of the alkali liquor and the waste gas to be more disordered, and avoiding the situation that local waste gas cannot be treated.
In the sampling stage, because of the uncertainty of the reaction, the reaction in some areas is more thorough, the reaction in some areas is more uneven, and the acidic substances contained in the waste gas are more, so that the comprehensiveness is required to be considered in the sampling stage, the sampling pipe basically covers the whole area of the spray tank in a dispersed type sampling pipe mode, so that more comprehensive gas component data can be intercepted, after the gas is intercepted, the gas component is analyzed, the actual emission standard is that the total non-methane hydrocarbon is less than or equal to 40mg/m, the hydrogen chloride is less than or equal to 8mg/m, the acetonitrile is less than or equal to 20mg/m, and the dichloromethane is less than or equal to 40mg/m, if the component content detected by the detector accords with the rated set value, the first cavity suction pump, the second cavity suction pump and the outer cavity suction pump are all kept in a closed state, and the obtained component content accords with the rated set value, the first cavity suction pump, the second cavity suction pump and the outer cavity suction pump are kept in a closed state, the gas component is enabled to be filled into a turbulent flow area B again, and the turbulent flow area is fully mixed again when the obtained component is not required to be fully loaded in the rated value, and the turbulent flow area is fully loaded again, and the turbulent flow is required to be mixed again when the obtained component is not required to be more than the rated value, and the rated value is required to be fully loaded, and the obtained is required to be loaded again;
however, in practice, if the first cavity suction pump is used to pump the spray tower back the exhaust gas from the resin adsorption device pipeline, the exhaust gas exhaust pipe seat and the top of the spray tower, the power is extremely high, and the pipeline is easily damaged, so that the invention adopts a continuous suction mode, the exhaust gas is pumped back into the flow pipe by the outer cavity suction pump, then the lower half section of the flow pipe is pumped back by the second cavity suction pump (at this time, the second cavity suction pump closes the channel between the electromagnetic valve and the turbulent flow area), and finally the exhaust gas is pumped back into the primary inlet area by the first cavity suction pump, so that the reaction is performed again until the exhaust gas meets the standard.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the external structure of an alkali liquor spray tower for chloride treatment.
Fig. 2 is a schematic top view of an alkali liquor spray tower for chloride treatment.
Figure 3 is a cross-sectional view of the invention at A-A in figure 2.
Fig. 4 is a schematic structural diagram of a filling layer according to the present invention.
Fig. 5 is a schematic structural view of an annular table according to the present invention.
FIG. 6 is a schematic view of a turbulence structure according to the present invention.
Fig. 7 is a schematic structural diagram of a detection mechanism provided by the present invention.
Fig. 8 is a schematic structural view of a return pipe according to the present invention.
Detailed Description
For the purpose of making embodiments of the present invention fall within the scope of the present invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as referring to purposes, technical solutions and advantages of the present invention in any way. All other implementations, which can be derived by a person skilled in the art without making any inventive effort, show or imply relative importance or implicitly indicate the number of technical features indicated on the basis of the implementations in the invention. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to FIGS. 1 to 8, there is provided an alkali liquor spray tower for chloride treatment, comprising: a spray tank 10, wherein the spray tank 10 comprises an air inlet pipe 11 positioned at one side of the lateral bottom of the spray tank 10, a waste discharge pipe 12 positioned at the other side of the lateral bottom of the spray tank 10, and a waste discharge pipe seat 13 arranged at the top of the spray tank 10; the alkali liquor input mechanism 20 comprises a pump body 21 which is locked on the outer side of the spray tank 10 and connected with an external pipeline, a conveying pipe 22 which is locked on the top of the pump body 21 and is inserted into the top of the spray tank 10, and an alkali liquor spray seat 23 which is communicated with the conveying pipe 22 and is arranged in the spray tank 10; the filling mechanism comprises a first filling structure and a second filling structure which are respectively arranged in the spray tank 10 from bottom to top, the first filling structure and the second filling structure divide the spray tank 10 into a primary inlet area A, a turbulent flow area B and a monitoring area C, the primary inlet area A, the turbulent flow area B and the monitoring area C are sequentially arranged at intervals from bottom to top, the first filling structure is identical to the second filling structure, the first filling structure comprises an annular table 311 fixedly connected to the inner side surface of the spray tank 10, a filling layer 312 is circularly arranged on the inner side of the annular table 311, and the filling materials in the filling layer 312 are obliquely arranged; the turbulent flow structure 40 is arranged in the turbulent flow area B, and the waste gas entering from the primary inlet area A and the alkali liquor falling into the monitoring area C are fully mixed in the turbulent flow area B; the return pipe 50 is respectively connected with the primary inlet area a, the turbulent flow area B and the monitoring area C, and the return pipe 50 is electrically connected with a detection mechanism 60 arranged at the top of the spray tank 10, and the detection mechanism 60 is used for detecting the concentration of the gas component in the monitoring area C and guiding the exhaust gas to the exhaust gas discharge tube seat 13 or the primary inlet area a or the turbulent flow area B according to the concentration of the gas component in the monitoring area C.
In this embodiment, the air inlet pipe 11 is connected with an exhaust gas discharge device of the new energy production equipment, and the generated exhaust gas directly enters the spray tower through the air inlet pipe 11 for treatment.
The waste gas entering the spray tower is subjected to a relatively sufficient neutralization reaction with the alkali liquor in the first filling structure and the second filling structure, acidic substances carried by the waste gas are neutralized, the waste gas flows into the resin adsorption equipment through the waste gas discharge tube seat 13, and a part of solid substances generated by the neutralization reaction are remained in the first filling structure and the second filling structure, and a part of solid substances are precipitated to the bottom of the spray tank 10.
Wherein, alkali liquor spray seat 23 sets up in the inside higher position of whole spray column, and it is connected to in the pump body 21 through extending to the outside conveyer pipe 22 of spray column, the outside alkali liquor of access through the pump body 21 to let alkali liquor spray seat 23 can constantly provide alkali liquor far and far.
In order to facilitate the classification of the reaction conditions of each zone, in this embodiment, the reaction zone of the entire spray tower is divided into a primary inlet zone a, a turbulent zone B, and a monitoring zone C.
In this embodiment, since the waste gas contains more acidic components, the packing in this embodiment is made of ceramic materials, and the same place as the prior art is that two groups of packing layers are also provided, so that the waste gas is discharged after the adhesion reaction of the two groups of packing layers, in most of the existing packing materials, in order to reduce the manufacturing cost, a parallel arrangement mode is often adopted, although the cost is reduced, the contact between the reaction liquid and the waste gas is not hindered, so that the waste gas is easy to pass through, meanwhile, the liquid is easy to flow out of the packing layers, the contact is only short, and the sufficient reaction time is not enough, in this embodiment, the packing in the packing structure is obliquely arranged, so that the waste gas in the reverse direction and alkali liquor sprayed from top to bottom can stay in the first packing structure and the second packing structure for a longer time, the invention provides that the filling layer 312 in the first filling structure and the second filling structure are movably arranged so as to facilitate the replacement of the filling layer 312, and the movable arrangement can simultaneously rotate the filling layer 312 on the annular table 311 fixed with the filling layer 312, thereby the alkali liquor and the waste gas passing through the filling layer 312 can be fully contacted for a long time, the complete neutralization reaction can be carried out, most of acidity can be neutralized in the spray tower, the pressure of the rear end resin adsorption device is reduced, so as to treat the tail gas of new energy in the mode of lowest cost.
However, a blank area is arranged between the first filling structure and the second filling structure, in conventional equipment, only a simple transition area is usually provided, only a middle rotation effect is achieved, but in practice, after the waste gas is processed by the first filling structure, if the waste gas directly enters the second filling structure in the same direction, the reaction effect is greatly reduced, so that the turbulent flow structure 40 is arranged between the first filling structure and the second filling structure, and the turbulent flow structure 40 is used for carrying out turbulent flow treatment on the waste gas after the reaction of the first filling structure, so that the impurity distribution remained in the waste gas is not needed again, and further, better reaction can be carried out again when the waste gas passes through the second filling structure, and the reaction is more thorough.
Because the reaction is carried out in the metal-sealed tank body, workers cannot see the internal reaction condition, and if the waste gas of the spray tank 10 is not up to standard, the waste gas directly enters the resin adsorption device to damage the resin adsorption device and cannot be remedied.
In the above description, the filling layer 312 is movably matched with the annular table 311, and after the filling layer 312 is used for a period of time, the filling layer 312 needs to be removed and replaced with a new filling layer 312, so that the filling layer 312 of the present invention is movably mounted and detachable, and therefore, the filling layer 312 includes a mounting cylinder 3121 for containing filler, a supporting plate 3122 disposed from the top edge of the mounting cylinder 3121 towards two sides, a plurality of ear seats 3123 welded at the bottom of the outer side of the mounting cylinder 3121, the supporting plate 3122 is connected with the ear seats 3123 through a connecting post 3124, the supporting plate 3122 is rotatably mounted on the top surface of the annular table 311, the annular table 311 is fixedly clamped with the ear seats 3123, the filler is firstly disposed in the filling layer 312, and the supporting plate 3122 of the filling layer 312 is supported on the top surface of the annular table 311, so that the annular table 311 supports the filling layer 312, thereby realizing basic fixing of the filling layer 312;
the annular table 311 is a hollow annular structure and is welded on the inner side of the spray tank 10, an annular groove 3111 is connected to the bottom of the annular table 311, a mobile motor 3112 is movably mounted on the inner side of the annular groove 3111, a plug pin 3113 is connected to the top of the mobile motor 3112, the plug pin 3113 penetrates through any ear seat 3123 of the filling layer 312, the mobile motor 3112 drives the filling layer 312 to rotate on the inner side of the annular table 311 when moving along the annular groove 3111, the annular groove 3111 is disposed on the bottom of the annular table 311, the aperture of the ear seat 3123 of the filling layer 312 is smaller than that of the annular groove 3111, and the mobile motor 3112 and the ear seat 3123 can perform circular motion, so that the mobile motor 3112 can drive the filling layer 312 through the ear seat 3123, and the waste gas passing through the filling material and the centrifugal force can also be subjected to the action of a centrifugal force, thereby the two can stay on the inner side of the filling layer 312, and the time for neutralization reaction can be further improved, and the acid and alkali lye in the waste gas can be removed thoroughly.
However, after the reaction is completed, due to the effect of part of the residual substances, the supporting disc 3122 is easily adhered to the annular table 311, and a certain obstruction is caused when the mobile motor 3112 is started to drive the filling layer 312 to rotate next time, it is further proposed that a conical disc 3125 is integrally formed at the bottom of the supporting disc 3122, one conical surface of the conical disc 3125 is adhered to the top surface of the annular table 311, and the conical disc 3125 is disposed at the bottom of the supporting disc 3122, so that the supporting disc 3122 is only contacted with the annular table 311 through a conical surface, that is, the turnover and fixing effects can be ensured, and meanwhile, the contact area is reduced, so that the influence on the supporting disc 3122 caused by the solidified residual substances is weakened.
In the present invention, since the turbulent flow structure 40 always has a certain amount of acting medium due to the continuous flow of the alkali liquor and the waste gas, the turbulent flow structure 40 of the present invention includes the connecting seat 41 disposed in the turbulent flow area B, the plurality of direction-adjusting motors 42 hinged on the connecting seat 41, the ultrasonic vibration structure 43 locked on the top of the direction-adjusting motor 42, and the ultrasonic vibration structure 43 is adopted to perform ultrasonic vibration in the whole turbulent flow area B, thereby disturbing the waste gas flowing from the first filling structure to the second filling structure, the alkali liquor flowing from the second filling structure to the first filling structure, so that the reaction of the alkali liquor and the waste gas is more disordered, the local waste gas is prevented from being unable to be treated, and in the practical application stage, the acting direction of the ultrasonic vibration structure 43 can be changed by adjusting the direction of the motor 42 according to the falling speed of the alkali liquor and the pressure of the waste gas feeding, thereby promoting or inhibiting the feeding of the waste gas, the ultrasonic vibration structure 43 in the present embodiment is an ultrasonic vibrator in the ultrasonic cleaning structure in the prior art, which is not described in detail herein, but the ultrasonic vibration structure 43 in the present embodiment is different from the ultrasonic vibrator in the ultrasonic cleaning structure in the prior art, and the embodiment is completely playing a layered effect.
It should be emphasized that the standards of exhaust emission in actual production are: the actual emission standard is that the total hydrocarbon of non-methane is less than or equal to 40mg/m, the hydrogen chloride is less than or equal to 8mg/m, the acetonitrile is less than or equal to 20mg/m, and the dichloromethane is less than or equal to 40 mg/m.
In the exhaust process, the exhaust gas is required to completely meet the standard, otherwise, the exhaust gas will have a larger influence on the next step, even the final exhaust effect will be directly influenced, for this purpose, the detection mechanism 60 is disposed at the top of the lye spraying seat 23, the detection mechanism 60 includes a sampling structure 61 disposed at the top opening of the spraying tank 10, a detector 62 disposed at the top of the sampling structure 61 and communicated with the sampling structure 61, a detection tube 63 inserted at the outer side of the detector 62 and extending to the outer side of the spraying tank 10, an external cavity suction pump 64 fixedly connected at the top of the detector 62 and extending to the exhaust gas exhaust seat 13, samples in real time and continuously through the sampling structure 61, and detects the exhaust gas to be exhausted by using the detector 62, and, in order to facilitate the staff on-site patrol to know information, the embodiment further provides an external detection tube 63, wherein the external detection tube 63 is a reagent capable of displaying the pH value, can contact with the exhaust gas, and feeds back the reagent in real time, so that the patrol staff can simply judge the color of the reagent.
In the sampling stage, because of the uncertainty of the reaction, the reaction may be more thorough in some areas, the reaction may be more nonuniform in some areas, and the acidic substances contained in the waste gas are still more, so that the sampling stage needs to be considered comprehensive, the sampling structure 61 of the invention comprises a circumferential plate 611 with a size smaller than that of the spray tank 10, the circumferential plate 611 is provided with a plurality of sampling pipes 612 facing the second filling structure, the sampling pipes 612 are communicated with the detector 62 through the circumferential plate 611, the inner diameter of the spray tank 10 is L, the distance between the two farthest sampling pipes 612 is 4/5L, the sampling pipes 612 are basically covered in the whole area of the spray tank 10 by adopting a distributed sampling pipe 612 mode, so that more comprehensive gas composition data can be intercepted,
further, the backflow pipe 50 includes a first communicating pipe 51, a second communicating pipe 52, and a third communicating pipe 53 respectively connected to the primary inlet area a, the turbulent flow area B, and the monitoring area C, a first inner cavity suction pump 54 is connected to one side of the first communicating pipe 51 inserted into the primary inlet area a, a second inner cavity suction pump 55 is connected to one side of the second communicating pipe 52 inserted into the turbulent flow area B, the first inner cavity suction pump 54, the second inner cavity suction pump 55, and the outer cavity suction pump 64 are all electrically connected to the detector 62, after intercepting the gas, the gas components are analyzed, if the component content detected by the detector 62 meets the rated set value, the first inner cavity suction pump 54, the second inner cavity suction pump 55, and the outer cavity suction pump 64 are all kept closed, and when the obtained component content meets the rated set value, the second inner cavity suction pump is filled again, the obtained component is completely mixed again in the turbulent flow area a, if the obtained turbulent flow area B is completely loaded again, and the obtained turbulent flow area B is completely after the turbulent flow is mixed again, and the obtained reaction is completely after the turbulent flow area a is completely loaded, if the obtained is required to be completely and the turbulent flow area is completely loaded, and the obtained is completely;
however, in practice, if the first cavity suction pump 54 is used to pump the spray tower back to the resin adsorption device pipeline, the exhaust pipe seat 13 and the exhaust gas at the top of the spray tower, the power is extremely high, and the pipeline is easily damaged, so that the invention adopts a continuous suction mode, the exhaust gas is pumped back into the return pipe 50 by the external cavity suction pump 64, the lower half of the return pipe 50 is pumped by the second cavity suction pump 55 (at this time, the second cavity suction pump 55 closes the channel between the electromagnetic valve and the turbulent flow area B), and finally, the exhaust gas is pumped back into the primary inlet area a by the first cavity suction pump 54, so that the reaction is performed again until the exhaust gas meets the standard, and as can be seen in the figure, the external cavity suction pump 64 is also connected with the return pipe 50 by a separate pipeline.
The invention also provides a use method of the alkali liquor spray tower for chloride treatment, which is applied to the alkali liquor spray tower for chloride treatment and comprises the following steps of:
s1, performing S1; waste gas produced by new energy sources is discharged into the spray tank 10 through the air inlet pipe 11, so that the waste gas with acidic substances contacts with alkali liquor sprayed by the alkali liquor spray seat 23 in a first filling structure in a rotating state and a neutralization reaction occurs, one part of formed products is positioned in the first filling structure, and the other part of formed products falls on the bottom of the spray tank 10;
s2, performing S2; the waste gas after the first reaction enters a turbulent flow area B, the waste gas is scattered after passing through the turbulent flow of a turbulent flow structure 40, products in the waste gas are further layered, coarser products fall down and are attached to a first filling structure, and lighter products enter a second filling structure along with the waste gas;
s3, performing S3; the waste gas is fully contacted with alkali liquor in the second filling structure in a rotating state and continuously reacts, one part of the reacted product is positioned in the second filling structure, and the other part of the reacted product passes through the first filling structure and then falls on the bottom of the spray tank 10;
s4, performing S4; the waste gas after passing through the second filling structure passes through the detection mechanism 60, the detection mechanism 60 is sampled in multiple directions, and the waste gas is conveyed to the primary inlet area A or the turbulent flow area B through the return pipe 50 under the condition that the sampling is unqualified.
The step S4 specifically comprises the following steps:
s41, performing S41; the detection mechanism 60 samples and detects the waste gas passing through the detection mechanism 60, and if the content of the obtained components accords with the rated set value, the first cavity suction pump 54, the second cavity suction pump 55 and the outer cavity suction pump 64 are kept in a closed state;
s42, performing S42; the detection mechanism 60 samples and detects the waste gas passing through the detection mechanism 60, and if the content of the obtained components exceeds the rated set value but does not exceed 5mg/m, the second cavity suction pump 55 is started, and the first cavity suction pump 54 and the outer cavity suction pump 64 are closed;
s43; the detection mechanism 60 samples and detects the exhaust gas passing through the detection mechanism 60, and the obtained component content exceeds the rated set value by more than 5mg/m, and simultaneously the first lumen aspiration pump 54, the second lumen aspiration pump 55 and the external lumen aspiration pump 64 are started.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An alkali liquor spray tower for chloride treatment, characterized by comprising:
the spray tank (10) comprises an air inlet pipe (11) positioned at one side of the lateral bottom of the spray tank (10), a waste discharge pipe (12) positioned at the other side of the lateral bottom of the spray tank (10), and an exhaust gas discharge pipe seat (13) arranged at the top of the spray tank (10);
the alkali liquor input mechanism (20) comprises a pump body (21) which is locked at the outer side of the spray tank (10) and connected with an external pipeline, a conveying pipe (22) which is locked at the top of the pump body (21) and is inserted into the top of the interior of the spray tank (10), and an alkali liquor spray seat (23) which is communicated with the conveying pipe (22) and is arranged in the spray tank (10);
the filling mechanism comprises a first filling structure and a second filling structure which are respectively arranged in the spray tank (10) from bottom to top, the first filling structure and the second filling structure divide the spray tank (10) into a primary entering area (A), a turbulent flow area (B) and a monitoring area (C), the primary entering area (A), the turbulent flow area (B) and the monitoring area (C) are sequentially arranged at intervals from bottom to top, the first filling structure is identical to the second filling structure, the first filling structure comprises an annular table (311) fixedly connected to the inner side surface of the spray tank (10), a filling layer (312) which is circumferentially arranged on the inner side of the annular table (311) is arranged, and the filling in the filling layer (312) is obliquely arranged;
the turbulent flow structure (40) is arranged in the turbulent flow area (B), and waste gas entering from the primary entering area (A) and alkali liquor falling into the monitoring area (C) are fully mixed in the turbulent flow area (B);
the backflow pipe (50) is respectively communicated with the primary inlet area (A), the turbulent flow area (B) and the monitoring area (C), the backflow pipe (50) is electrically connected with a detection mechanism (60) arranged at the inner top of the spray tank (10), the detection mechanism (60) is used for detecting the concentration of the gas component in the monitoring area (C), and the waste gas is guided to the waste gas discharge tube seat (13) or the primary inlet area (A) or the turbulent flow area (B) according to the concentration of the gas component in the monitoring area (C);
the filling layer (312) comprises a mounting cylinder (3121) for containing filling materials, a supporting plate (3122) is arranged from the top edge of the mounting cylinder (3121) towards two sides, a plurality of ear seats (3123) are welded at the bottom of the outer side of the mounting cylinder (3121), the supporting plate (3122) is connected with the ear seats (3123) through a connecting column (3124), the supporting plate (3122) is installed on the top surface of the annular table (311) in a turnover way, and the annular table (311) is clamped and fixed with the ear seats (3123);
the bottom of the supporting disc (3122) is integrally formed with a conical disc (3125), and one conical surface of the conical disc (3125) is attached to the top surface of the annular table (311);
the annular table (311) is of a hollow annular structure and is welded on the inner side of the spray tank (10), an annular groove (3111) is connected to the bottom of the annular table (311), a mobile motor (3112) is movably mounted on the inner side of the annular groove (3111), a plug pin (3113) is connected to the top of the mobile motor (3112), the plug pin (3113) penetrates through any lug seat (3123) in the filling layer (312), and the mobile motor (3112) drives the filling layer (312) to rotate on the inner side of the annular table (311) when moving along the annular groove (3111);
the turbulent flow structure (40) comprises a connecting seat (41) arranged in the turbulent flow area (B), a plurality of direction-adjusting motors (42) hinged on the connecting seat (41), and an ultrasonic vibration structure (43) locked at the top of the direction-adjusting motors (42).
2. The alkali liquor spray tower for chloride treatment according to claim 1, wherein the detection mechanism (60) is arranged at the top of the alkali liquor spray seat (23), the detection mechanism (60) comprises a sampling structure (61) arranged at the top opening of the spray tank (10), a detector (62) positioned at the top of the sampling structure (61) and communicated with the sampling structure (61), a detection pipe (63) inserted outside the detector (62) and extending to the outside of the spray tank (10), and an external cavity suction pump (64) fixedly connected at the top of the detector (62) and extending to the inside of the exhaust gas discharge pipe seat (13).
3. The lye spray tower for chloride treatment according to claim 2, characterized in that said sampling structure (61) comprises a circumferential disc (611) of a size smaller than said spray tank (10), said circumferential disc (611) having a number of sampling tubes (612) facing said second filling structure, said sampling tubes (612) being in communication with said detector (62) through said circumferential disc (611), said spray tank (10) having an inner diameter L, the distance between the two furthest sampling tubes (612) being 4/5L.
4. The alkali liquor spray tower for chloride treatment according to claim 2, wherein the reflux tube (50) comprises a first communicating tube (51), a second communicating tube (52) and a third communicating tube (53) which are respectively connected with the primary inlet area (A), the turbulent flow area (B) and the monitoring area (C), a first inner cavity suction pump (54) is connected to one side of the primary inlet area (A) inserted into the first communicating tube (51), a second inner cavity suction pump (55) is connected to one side of the turbulent flow area (B) inserted into the second communicating tube (52), and the first inner cavity suction pump (54), the second inner cavity suction pump (55) and the outer cavity suction pump (64) are all electrically connected with the detector (62).
5. A method of using the alkali liquor spray tower for chloride treatment of any one of claims 1 to 4, comprising the steps of:
s1, performing S1; waste gas produced by new energy sources is discharged into a spray tank (10) through an air inlet pipe (11), so that the waste gas with acidic substances contacts with alkali liquor sprayed by an alkali liquor spray seat (23) in a first filling structure in a rotating state and a neutralization reaction occurs, one part of formed products is positioned in the first filling structure, and the other part of formed products falls on the bottom of the spray tank (10);
s2, performing S2; the waste gas after the first reaction enters a turbulent flow area (B), the waste gas is scattered after passing through the turbulent flow of a turbulent flow structure (40), products in the waste gas are further layered, coarser products fall down and are attached to a first filling structure, and lighter products enter a second filling structure along with the waste gas;
s3, performing S3; the waste gas is fully contacted with alkali liquor in a second filling structure in a rotating state and continuously reacts, one part of the reacted product is positioned in the second filling structure, and the other part of the reacted product passes through the first filling structure and then falls on the bottom of the spray tank (10);
s4, performing S4; the waste gas after passing through the second filling structure can pass through the detection mechanism (60), the detection mechanism (60) is sampled in multiple directions, and the waste gas is conveyed to the primary inlet area (A) or the turbulent flow area (B) through the return pipe (50) under the condition that the sampling is unqualified.
6. The method for using an alkali liquor spray tower for chloride treatment according to claim 5, wherein said S4 specifically comprises:
s41, performing S41; the detection mechanism (60) samples and detects the waste gas passing through the detection mechanism (60), and if the content of the obtained components accords with the rated set value, the first inner cavity suction pump (54), the second inner cavity suction pump (55) and the outer cavity suction pump (64) are kept in a closed state;
s42, performing S42; the detection mechanism (60) samples and detects the waste gas passing through the detection mechanism (60), and if the content of the obtained components exceeds the rated set value but does not exceed 5mg/m, the second inner cavity suction pump (55) is started, and the first inner cavity suction pump (54) and the outer cavity suction pump (64) are closed;
s43; the detection mechanism (60) samples and detects the waste gas passing through the detection mechanism (60), the content of the obtained components exceeds the rated set value by more than 5mg/m, and simultaneously, the first inner cavity suction pump (54), the second inner cavity suction pump (55) and the outer cavity suction pump (64) are started.
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