CN109432983A - A kind of nitrogen-containing oxide exhaust treatment system - Google Patents
A kind of nitrogen-containing oxide exhaust treatment system Download PDFInfo
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- CN109432983A CN109432983A CN201811464106.1A CN201811464106A CN109432983A CN 109432983 A CN109432983 A CN 109432983A CN 201811464106 A CN201811464106 A CN 201811464106A CN 109432983 A CN109432983 A CN 109432983A
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- water tank
- water
- spray
- spray column
- siphon
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- 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
- B01D53/75—Multi-step processes
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- 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
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- 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
Abstract
The invention discloses a kind of nitrogen-containing oxide exhaust treatment system, the absorption efficiency of processing system of the present invention is high, and processing is up to standard, and absorption efficiency highest can achieve 99.5%, discharged nitrous oxides concentration≤200mg/m3, investment operating cost is low, and integrated level is high, and operating flexibility is big；And each absorption processing unit of device is all independent agency, can individually operate control, it is ensured that ensures to export tail gas qualified discharge under conditions of most economical；Maintenance, adjustment do not need whole system shutdown, it is ensured that absorb the continuous of processing；It can also guarantee the exhaust gas of the absorbing liquid processing higher concentration with high solutes content, with the exhaust gas of the absorbing liquid processing low concentration of low solutes content, ensure that the exhaust gas being discharged obtains preferably purified treatment, the discharge of the absorbing liquid of high solutes content can be to avoid the waste and subsequent treatment cost of absorbing liquid；The automatic replacement of water between water tank is realized using ball-cock assembly and siphon pipe, simple and practical, failure rate is lower.
Description
Technical field
The present invention relates to a kind of exhaust treatment systems, and in particular to a kind of nitrogen-containing oxide exhaust treatment system.
Background technique
Common ingredient has nitric oxide, nitrogen dioxide, laughing gas, dinitrogen pentoxide etc. in nitrogen-containing oxide tail gas, they
It is common atmosphere pollution, main component is nitric oxide and nitrogen dioxide.
The processing method of nitrogen oxides has reduction method, plasma activation, biochemical method, absorption method and liquid absorption method
Deng.Liquid absorption method is to absorb the nitrogen oxides in exhaust gas with the aqueous solution of water or acid, alkali, salt, and exhaust gas is made to be purified
Method.But the single-stage spray water absorption method or single-stage spray plus Alkali absorption method generally used, the major defect of this method is skill
Art level is not high, and purification efficiency is low, and clean-up effect is bad, and exhaust-gas treatment is not up to standard.
Summary of the invention
It is provided it is an object of the invention to overcome in place of the shortcomings of the prior art at a kind of nitrogen-containing oxide tail gas
Reason system.
To achieve the above object, the technical scheme adopted by the invention is as follows: a kind of nitrogen-containing oxide exhaust treatment system, including
First spray column, the second spray column, third spray column, the 4th spray column and the 5th spray column, first spray column, the second spray
Leaching tower, third spray column, the 4th spray column and the 5th spray column include at least two layers of packing layer, and the first spray tower bottom is equipped with
Air inlet, the first spray column top are connected with the side wall at the top of the second spray column by sealing pipeline, second spray
Leaching tower bottom is connected with third spray tower bottom by sealing pipeline, at the top of the third spray column and at the top of the 4th spray column
Side wall be connected by sealing pipeline, the 4th spray tower bottom sprays tower bottom with the 5th and is connected by sealing pipeline
It is logical；First spray column, the second spray column, third spray column, the 4th spray column and the 5th spray column pass through water pump respectively
It is connected with the first water tank, the second water tank, third water tank, the 4th water tank and the 5th water tank；First water tank, the second water tank,
Spray liquid is loaded in three-tank, the 4th water tank and the 5th water tank；Spray liquid in first water tank and the second water tank is equal
For water；Spray liquid in the third water tank and the 4th water tank is aqueous slkali；Spray liquid in 5th water tank is oxidant
Solution；
At least one water tank in first water tank, the second water tank, third water tank, the 4th water tank and the 5th water tank is multi-level water
The series of case, the multistage water tank is n grades, and n >=2, n a grade water tank are sequentially stacked from the top down, and second level water tank is located at the first order
Below water tank, n-th grade of water tank is located at bottom, and first order water tank is equipped with water supplement port, and n-th grade of water tank is equipped with discharge outlet,
The water supplement port is connected by floating ball valve of rehydration with every grade of water tank；Neighbouring two-stage water tank is connected by a siphon pipe,
Upper end siphon pipe in the water tank of upper layer is equipped with water inlet, and the lower end siphon tube wall in lower layer's water tank is equipped with water outlet
Mouthful, siphon ball-cock assembly is equipped in other water tanks in addition to n-th grade of water tank, the siphon ball-cock assembly controls lower end siphon tube wall
The opening and closing of upper water-out mouth, when water level decreasing to minimum setting position, siphon ball-cock assembly controls water outlet and opens, and water level rises to most
When high setting position, siphon ball-cock assembly controls water outlet and closes；
The spray column being connected with multistage water tank is multi-stage spray tower, and the multi-stage spray tower is equipped with N grades and is arranged successively up and down
Cleaning equipment, N >=2, second level cleaning equipment is located at the lower section of first order cleaning equipment, and N grades of cleaning equipments are located at most lower
Side, first order cleaning equipment are located at the top, and the cleaning equipment includes spray assemblies, successively fix below the spray assemblies
There is packing layer and collect the collecting tank of absorbing liquid, the bottom of each collecting tank is by drain pipe respectively and in multistage water tank
Level-one water tank is connected；Inlet and liquid outlet are equipped on every grade of water tank, the inlet on adjacent two layers water tank respectively with it is adjacent
The drain pipe of sump bottom on two layers of cleaning equipment is connected, the liquid outlet on adjacent two layers water tank respectively with adjacent two layers
Spray assemblies on cleaning equipment are connected.
Handling principle in spray columns at different levels is as follows:
1) composition that water can be dissolved in nitrogen oxides the processing in the first spray column: is dissolved in aquatic products caliche acid
Reaction equation 1:3NO2+H2O=2HNO3+NO
Reaction equation 2: the oxygen in air is reacted with NO is converted to NO soluble easily in water2: 2NO+O2=2NO2
2) processing in the second spray column: continue the composition that can be dissolved in water in nitrogen oxides to be dissolved in aquatic products caliche acid
Reaction equation 1:3NO2+H2O=2HNO3+NO
Reaction equation 2: the oxygen in air is reacted with NO is converted to NO soluble easily in water2: 2NO+O2=2NO2
3) processing in third spray column: remaining NO2It is handled by lye absorbing reaction
Reaction equation:
2NO2+ 2NaOH=NaNO2+NaNO3+H2O
3NO2+H2O=2HNO3+NO
HNO3+ NaOH=NaNO3+H2O
4) processing in the 4th spray column: remaining NO2It is handled by lye absorbing reaction
Reaction equation:
2NO2+ 2NaOH=NaNO2+NaNO3+H2O
3NO2+H2O=2HNO3+NO
HNO3+ NaOH=NaNO3+H2O
5) the final intensive treatment of processing in the 5th spray column
With oxidizing agent solution spray-absorption, oxidant is sodium perchlorate, sodium chlorate, sodium chlorite, SODIUM PERCARBONATE and over cure
At least one of sour sodium.
Nitrogen-containing oxide exhaust treatment system of the present invention first uses water to carry out spray-absorption processing, then uses lye
Spray-absorption processing is carried out, spray-absorption processing is finally carried out using oxidizing agent solution, using Pyatyi spray absorber, absorbs effect
Rate highest can achieve 99.5%, discharged nitrous oxides concentration≤200mg/m3, and operating cost is low.
The absorbing liquid for absorbing exhaust gas is stored in water tank, and absorbing liquid flows into water tank through drain pipe again in water tank；Water tank
Middle absorbing liquid flows into spray assemblies through liquid feeding pump and inlet tube again.When monitoring that top discharge gas reaches setting value or arrive
Preset time just opens the drain valve of bottom water tank (n-th grade of water tank), and saturated absorption liquid is discharged；The drainage procedure of water tank has
Body are as follows: when monitoring that top discharge gas reaches setting value or arrived preset time, the drain valve of n-th grade of water tank is just opened,
The discharge of saturated absorption liquid, when water level decreasing to minimum setting position (can be the position that absorbing liquid drains), siphon ball-cock assembly
It controls the water outlet in n-th grade of water tank on siphon pipe to open, the water in (n-1)th grade of water tank is by siphon pipe from n-th grade of water tank
Water outlet flows out, and the water level in n-th grade of water tank rises, while the water level decreasing in (n-1)th grade of water tank, the water in n-th grade of water tank
When position rises to highest setting position, siphon ball-cock assembly controls water outlet and closes, and the water in (n-1)th grade of water tank stops flow into, complete
(n-1)th grade of water tank of Cheng Shuicong to n-th grade of water tank displacement.Equally, when the water level decreasing in (n-1)th grade of water tank to minimum setting position
When setting, water realizes the displacement of the n-th -2 grades water tanks to (n-1)th grade of water tank by siphon pipe and siphon ball-cock assembly, when first order water tank
In water level when being lower than setting position, floating ball valve of rehydration, which is opened, supplements new absorbing liquid to first order water tank, so realizes entire water
The displacement of case is progressive to change water.Using ball-cock assembly and siphon pipe, these general accessories realize the automatic replacement of water between water tanks, letter
It is single practical, with motor-driven valve, pneumatic operated valve, water pump etc. when handling mordant liquid high failure rate, service life it is short compared with, failure rate
It is lower.
Guarantee that the absorbing liquid of high solutes content handles the exhaust gas of higher concentration in this way, at the absorbing liquid with low solutes content
Manage the exhaust gas of low concentration, it is ensured that the exhaust gas of discharge obtains preferably purified treatment, and the discharge of the absorbing liquid of high solutes content can
To avoid the waste and subsequent processing cost of absorbing liquid.
The specific setting series of water tank and purification device can be according to factors such as the treatment effeciencies of exhaust gas concentration and spray liquid
It is set according to concrete condition.Every grade of water tank can be using the setting of multistage water tank, the first spray column, third spray column and the 5th
Spray column is reverse-flow spray column, and the second spray column and the 4th spray column are downflow type spray column, can be used and multi-level water
The mode of case connection, can also be to one of water tank or several water tanks using multistage water tank setting, and concrete condition can root
Depending on actual demand.
As the preferred embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, first spray column into
Port is connected with the gas outlet of surge tank, and the surge tank is equipped with air intake and nitrogen oxides entrance.
In surge tank, air is mixed by concentration with air stoichiometry with nitrogen oxides, and the oxygen in air can be with nitrogen oxidation
NO in object is converted to NO soluble easily in water2Composition, reactional equation: 2NO+O2=2NO2.According to " inorganic matter technique " (horse beautiful jade compile,
P34), when temperature is lower than 200 DEG C when temperature is lower than 100 DEG C under normal pressure or under 0.8Mpa, the oxygenation efficiency of NO is almost 100%,
And the reaction rate of NO oxidation is reduced with the raising of temperature, is increased with the increase of pressure, therefore keeps the temperature in surge tank
It is lower to mix with air, realize that NO is converted to NO soluble easily in water2。
As the preferred embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, positioned at the drain of upper layer water tank
End is connected by inlet tube, valve and liquid feeding pump with the spray assemblies for being located at upper layer cleaning equipment, positioned at the row of lower layer's water tank
Liquid end is connected by inlet tube, valve and liquid feeding pump with the spray assemblies for being located at lower layer's cleaning equipment.Using it is inversely spraying when
Increase absorption efficiency is more advantageous to the setting that the classification absorbs.
As the preferred embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, it is equipped with and supplies in the collecting tank
The upper port position of the permeability cell exhaust gas entrance that gas passes through, the permeability cell is higher than sump bottom.
As the preferred embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, set at the top of the collecting tank
There is opening, the side wall of the collecting tank and the inner wall of the spray column are fitted closely, set above the upper port of the permeability cell
There is water stopping cap, the water stopping cap barrier liquid flows into permeability cell.
As the preferred embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, the siphon ball-cock assembly is arranged
In on the siphon pipe of lower end, siphon ball-cock assembly can the relative motion above and below the siphon pipe of lower end, the water outlet is set to lower end siphon pipe
Tube wall on, the relative motion of the siphon ball-cock assembly and siphon pipe is used to control the opening and closing of water outlet.
As the preferred embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, the siphon ball-cock assembly passes through
Floating ball rod is connected with control floating ball, and the other end of the control floating ball is fixedly arranged on roof, and the siphon ball-cock assembly is equipped with
Vertical chute, the floating ball rod can relative movement, the siphon ball-cock assembly can decline with water level decreasing up and down along the chute, water
Before position rises to highest setting position, control floating ball controls siphon ball-cock assembly by floating ball rod and opposite fortune does not occur with siphon pipe
Dynamic, when water level rises to highest setting position, control floating ball drives siphon ball-cock assembly to move upwards and controls out by floating ball rod
The mouth of a river is closed.
When the water level descends, siphon ball-cock assembly declines along lower end siphon pipe with water level decreasing, and floating ball rod is along vertical
Sliding slot moves downward, and when water level decreasing to minimum setting position, the water outlet on siphon ball-cock assembly control lower end siphon pipe is beaten
Open, water level rise, before water level rises to highest setting position, control floating ball by floating ball rod control siphon ball-cock assembly not with rainbow
Relative motion occurs for suction pipe, so that water outlet is in the open state before guaranteed water level rises to highest setting position, when on water level
When rising to highest setting position, control floating ball drives siphon ball-cock assembly to move upwards by floating ball rod to control water outlet and close
It closes.
As the preferred embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, the spray column corresponds to every
The position of a cleaning equipment is equipped with observation panel.
As the preferred embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, the bottom of the siphon ball-cock assembly
Portion is installed with buoyant member.The effect of the buoyant member is that siphon ball-cock assembly is made to have certain buoyancy, is declined with the decline of water level.
As the preferred embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, the oxidizing agent solution is height
At least one of sodium chlorate, sodium chlorate, sodium chlorite, SODIUM PERCARBONATE and sodium peroxydisulfate；The aqueous slkali is that sodium hydroxide is molten
Liquid.
As the preferred embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, the top of the 5th spray column
Portion's air outlet is equipped with demisting packing layer.
As the preferred embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, first water tank, second
Heat exchange coil is equipped in water tank, third water tank, the 4th water tank and the 5th water tank.
The present invention also provides a kind of nitrogen-containing oxide exhaust gas treating methods, comprising the following steps:
(1), nitrogen oxides is mixed with air, carries out spray process with water；
(2), the nitrogen oxides after spray process is subjected to spray process with lye；
(3), the nitrogen oxides after carrying out spray process with lye is subjected to spray process using oxidizing agent solution.
The beneficial effects of the present invention are: the present invention provides a kind of nitrogen-containing oxide exhaust treatment systems.Institute of the present invention
It is high to state nitrogen-containing oxide exhaust treatment system absorption efficiency, processing is up to standard, and absorption efficiency highest can achieve 99.5%, nitrogen oxidation
Object concentration of emission≤200mg/m3, investment operating cost is low, and integrated level is high, and operating flexibility is big.And each absorption processing of device
Unit is all independent agency, can individually operate control, it is ensured that ensures to export tail gas under conditions of most economical up to standard
Discharge；Maintenance, adjustment do not need whole system shutdown, it is ensured that absorb the continuous of processing.Guarantee the suction of high solutes content
The exhaust gas for receiving liquid processing higher concentration, with the exhaust gas of the absorbing liquid processing low concentration of low solutes content, it is ensured that the exhaust gas of discharge
Obtain preferably purified treatment, the discharge of the absorbing liquid of high solutes content can to avoid absorbing liquid waste and subsequent be processed into
This.Using ball-cock assembly and siphon pipe, these general accessories realize the automatic replacement of water between water tanks, and simple and practical, failure rate is more
It is low.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of nitrogen oxides exhaust treatment system described in embodiment；
Fig. 2 is the structural schematic diagram of water tank；
Fig. 3 is a kind of structural schematic diagram of spray equipment of the present invention；
Fig. 4 is the amplification axonometric drawing of collecting tank；
Wherein, 1, surge tank；101, air intake；102, nitrogen oxides entrance；2, the first spray column；201, the first water
Case；2001, first order water tank；2012, second level water tank；2013, third level water tank；2014, water compensating valve；2015, drain valve；
2016, floating ball valve of rehydration；2017, siphon pipe；2018, siphon ball-cock assembly；2019, floating ball is controlled；20110, water outlet；20111,
Buoyant member；21112, the first inlet；20113, the first leakage fluid dram；20114 second inlets；20115, the second leakage fluid dram；
20116, third inlet；20117, third leakage fluid dram；202, first order cleaning equipment；203, permeability cell；2031, water stopping cap；
204, first order collecting tank；205, the first drain pipe；206, the first inlet tube；207, the first liquid feeding pump；3, the second spray column；
301, the second water tank；4, third spray column；401, third water tank；5, the 4th spray column；501, the 4th water tank；6, the 5th spray
Tower；601, the 5th water tank；7, packing layer；8, spray equipment；9, demisting packing layer.
Specific embodiment
To better illustrate the object, technical solutions and advantages of the present invention, below in conjunction with specific embodiment to the present invention
It is described further.
Embodiment
A kind of embodiment of nitrogen-containing oxide exhaust treatment system of the present invention, nitrogen-containing oxide tail described in the present embodiment
Gas processing system includes surge tank 1, the first spray column 2, the second spray column 3, third spray column 4, the 4th spray column 5 and the 5th spray
Tower 6 is drenched, first spray column 2, the second spray column 3, third spray column 4, the 4th spray column 5 and the 5th spray column 6 include
Three layers of packing layer 7, the packing layer top of first spray column 2, the second spray column 3, third spray column 4 and the 4th spray column 5
It is equipped with spray equipment 8；It is equipped with spray equipment above two layers of packing layer below 5th spray column 6, top layer's packing layer is
Demisting packing layer 9 is set to top outlet inlet, for removing the steam in gas.
First spray column, 2 bottom is equipped with air inlet, the air inlet of first spray column 2 and the outlet of surge tank 1
Mouth is connected, and the surge tank 1 is equipped with air intake 101 and nitrogen oxides entrance 102.
The first spray tower top 2 is connected with the side wall at 3 top of the second spray column by sealing pipeline, and described second
3 bottom of spray column is connected with 4 bottom of third spray column by sealing pipeline, 4 top of third spray column and the 4th spray
The side wall at 5 top of tower is connected by sealing pipeline, and 5 bottom of the 4th spray column and 6 bottom of the 5th spray column pass through sealing
Pipeline is connected；Exhaust outlet, first spray column 2, the second spray column 3, third spray are equipped at the top of 5th spray column
Tower 4, the 4th spray column 5 and the 5th spray column 6 pass through water pump and the first water tank 201, the second water tank 301, third water tank respectively
401, the 4th water tank 501 is connected with the 5th water tank 601；First water tank 201, the second water tank 301, third water tank the 401, the 4th
Spray liquid is loaded in water tank 501 and the 5th water tank 601；Spray liquid in first water tank 201 and the second water tank 301 is equal
For water；Spray liquid in the third water tank 401 and the 4th water tank 501 is sodium hydroxide solution；In 5th water tank 601
Spray liquid is oxidizing agent solution；
The oxidizing agent solution can choose sodium perchlorate, sodium chlorate, sodium chlorite, SODIUM PERCARBONATE, in sodium peroxydisulfate
It is at least one.In first water tank 201, the second water tank 301, third water tank 401, the 4th water tank 501 and the 5th water tank 601
Equipped with heat exchange coil (not shown).
Nitrogen-containing oxide exhaust treatment system described in the present embodiment is in use, press one for the exhaust gas of air and nitrogen-containing oxide
Fixed proportion is passed through in surge tank 1, and the exhaust gas in surge tank 1 enters the first spray column from the air inlet of 2 bottom of the first spray column
2, exhaust gas is from lower from upper flowing, and spray equipment 8 sprays water outlet from top to bottom, and part nitrogen dioxide is dissolved in the water, while part
Oxidation of nitric oxide is nitrogen dioxide, is not dissolved in the nitrogen dioxide of water as air-flow from the top of the first spray column 2 enters second
The top of spray column 3 is contacted with the spray liquid in the second spray column 3 from top to bottom, continues to dissolve part nitrogen dioxide in water
In, undissolved portion enters in third spray column 4, with the lye hydroxide in third spray column 4 and the 4th spray column 5
Sodium contact continues to dissolve the part nitrogen dioxide in air-flow, and amount of nitrogen oxides of the exhaust gas after coming out in the 4th spray column is inhaled
The rate of producing effects has had reached 90% or more, enters back into the 5th spray column 6, carries out final intensive treatment in the 5th spray column 6,
Nitrogen oxides is substantially all to be converted into nitrogen dioxide after the processing of oxidant, and the demisting filler through top outlet inlet removes
After mist, it can be directly discharged in air.
First water tank 201, the second water tank 301, third water tank 401, the 4th water tank 501 and the 5th water tank in the present embodiment
601 be multistage water tank, is specifically described in detail by taking the structure of the first water tank as an example in text, the second water tank, third water tank, the 4th water
The structure of case and the 5th water tank and the connection relationship of itself and spray column can be with by parity of reasoning.
The structural schematic diagram of first water tank 201 is shown in that Fig. 2, the series of first water tank 201 are 3, and three-level water tank is under
It is sequentially stacked upwards, first order water tank 2011 is located at top, and second level water tank 2012 is located at 2011 lower section of first order water tank, third
Grade water tank 2013 is located at bottom, and first order water tank 2011 is equipped with water supplement port, and water supplement port is equipped with water compensating valve 2014, the third
Grade water tank 2013 be equipped with discharge outlet, discharge outlet be equipped with drain valve 2015, the water supplement port by floating ball valve of rehydration 2016 with
Every grade of water tank is connected；Neighbouring two layers of water tank is connected by a siphon pipe 2017, the siphon pipe in higher level's water tank
2017 are known as upper end siphon pipe, are known as lower end siphon pipe positioned at the siphon pipe of junior's water tank, the upper end rainbow in the water tank of upper layer
Suction pipe is equipped with water inlet, and lower end siphon tube wall in lower layer's water tank is equipped with water outlet 20110, except third level water tank with
Siphon ball-cock assembly 2018 is equipped in other outer water tanks, the siphon ball-cock assembly 2018 controls lower end siphon tube wall upper water-out mouth
20110 opening and closing, when water level decreasing to minimum setting position, siphon ball-cock assembly 2018 controls water outlet 20110 and opens, on water level
When rising to highest setting position, siphon ball-cock assembly 2018 controls water outlet 20110 and closes.
The siphon ball-cock assembly 2018 is sheathed on the siphon pipe of lower end, and siphon ball-cock assembly 2018 can be above and below the siphon pipe of lower end
Relative motion, the siphon ball-cock assembly 2018 are used to control the opening and closing of water outlet 20110 with the relative motion of lower end siphon pipe.
The siphon ball-cock assembly 2018 is connected by floating ball rod (not shown) with control floating ball 2019, the control
The other end of floating ball 2019 is fixedly arranged on roof, and the siphon ball-cock assembly 2018 is equipped with vertical chute (not shown), institute
Stating floating ball rod can relatively move up and down along the chute, and during water level decreasing, the siphon ball-cock assembly 2018 can be with water level decreasing
And decline, in water level uphill process, before water level rises to highest setting position, control floating ball 2019 is controlled by floating ball rod
With lower end siphon pipe relative motion does not occur for siphon ball-cock assembly 2018, when water level rises to highest setting position, controls floating ball
2019 drive siphon ball-cock assembly 2018 to move upwards control water outlet 20110 by floating ball rod closes.The siphon ball-cock assembly
2018 bottom is installed with buoyant member 20111, and buoyant member 20111 can make siphon ball-cock assembly 2018 have certain buoyancy, with water level
Decline and decline.
The structural schematic diagram of first spray column is seen figures 3 and 4, and first spray column is arranged successively net up and down equipped with three-level
Change equipment, second level cleaning equipment is located at the lower section of first order cleaning equipment, and third level cleaning equipment is located at bottom, the first order
Cleaning equipment is located at the top, and first order cleaning equipment 202 includes first order collecting tank 204, the bottom of first order collecting tank 204
It is connected by the first drain pipe 205 with the first inlet 20112 of first order water tank 2011, the first of first order water tank 2011
Leakage fluid dram 20113 is connected by the first inlet tube 206, the first liquid feeding pump 207 with the spray assemblies of first order cleaning equipment 202
It connects；Similarly, second level cleaning equipment includes second level collecting tank, and the bottom of second level collecting tank passes through the second drain pipe and the
Second inlet 20114 of second level water tank 2012 is connected, the second leakage fluid dram 20115 of second level water tank 2012 by second into
Liquid pipe, the second liquid feeding pump are connected with the spray assemblies of second level cleaning equipment；Third level cleaning equipment includes third level liquid collecting
The bottom of slot, third level collecting tank is connected by third drain pipe with the third inlet 20116 of third level water tank 2013, the
The third leakage fluid dram 20117 of three-level water tank 2013 passes through third inlet tube, the spray of third liquid feeding pump and third level cleaning equipment
Component is connected.
The position that first spray column 2 corresponds to each cleaning equipment is equipped with observation panel, in first order cleaning equipment 202,
The upper port of permeability cell 203 is higher than the bottom of first order collecting tank 204, the lower port and first order collecting tank 204 of permeability cell 203
Bottom be fixedly connected；Similarly, in the cleaning equipment of the second level, the upper port of permeability cell is higher than the bottom of second level collecting tank
The lower port in portion, permeability cell is fixedly connected with the bottom of second level collecting tank；In third level cleaning equipment, the upper end of permeability cell
Mouth is higher than the bottom of third level collecting tank, and the lower port of permeability cell is fixedly connected with the bottom of third level collecting tank.
After exhaust gas enters the first spray column 2, the second spray column is drained into from top after multistage purification equipment clean；It is wherein every
First class purification equipment is all made of module design, can add or reduce the module of cleaning equipment, to reach different clean-up effects；Often
First class purification equipment is designed with packing layer, water stopping cap 2031, collecting tank and permeability cell 203, guarantees the independence of every grade of cleaning equipment
Change；Lower section exhaust gas enters in cleaning equipment from permeability cell 203 carries out purified treatment.The absorbing liquid for absorbing exhaust gas is stored in liquid collecting
In slot, absorbing liquid flows into the first water tank 201 through drain pipe again in collecting tank；Absorbing liquid is again through liquid feeding pump in first water tank 201
It is flowed into spray assemblies with inlet tube.When monitoring that top discharge gas reaches setting value or arrived preset time, saturated absorption
Liquid is discharged by drain valve 2015；The drainage procedure of water tank specifically: when monitoring that top exhaust gas concentration reaches setting value or arrive
Preset time opens the drain valve 2015 in third level water tank 2013 discharge outlet, and water level decreasing, siphon ball-cock assembly 2018 is under
End siphon pipe declines with water level decreasing, and floating ball rod is moved downward along vertical chute, when water level decreasing to minimum setting position
When setting, siphon ball-cock assembly 2018 controls the water outlet 20110 on the siphon pipe of lower end and opens, and the water in second level water tank 2012 is by rainbow
Suction pipe rises from the water level in the water outlet outflow in third level water tank 2013, third level water tank 2013, while second level water tank
Water level decreasing in 2012, before water level rises to highest setting position in third level water tank 2013, control floating ball 2019 passes through floating
Ball link controls siphon ball-cock assembly 2018 and relative motion does not occur with siphon pipe 2017, so that guaranteed water level rises to highest setting
Before position, water outlet 20110 is in the open state, and when water level rises to highest setting position, control floating ball 2019 passes through floating
Ball link drives siphon ball-cock assembly 2018 to move upwards to control water outlet 20110 and close, and the water in second level water tank 2012 stops
Fluid stopping enters, and completes water from second level water tank 2012 to the displacement of third level water tank 2013.Equally, when in second level water tank 2012
When water level decreasing to minimum setting position, water realizes first order water tank 2011 to second level water by siphon pipe and siphon ball-cock assembly
The displacement of case 2012 touches the opening pair of floating ball valve of rehydration 2016 when the water level in first order water tank 2011 is lower than setting position
2011 moisturizing of first order water tank so realizes that the displacement of entire water tank is progressive and changes water.Guarantee the suction of high solutes content in this way
The exhaust gas for receiving liquid processing higher concentration, with the exhaust gas of the absorbing liquid processing low concentration of low solutes content, it is ensured that the exhaust gas of discharge
Obtain preferably purified treatment, the discharge of the absorbing liquid of high solutes content can to avoid absorbing liquid waste and subsequent be processed into
This.
Through detecting, using nitrogen-containing oxide exhaust treatment system described in the present embodiment, treated that nitrogen oxides can make to inhale
The rate of producing effects is up to 99.5%, discharged nitrous oxides concentration≤200mg/m3。
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of range is protected, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should
Understand, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the essence of technical solution of the present invention
And range.
Claims (10)
1. a kind of nitrogen-containing oxide exhaust treatment system, which is characterized in that including the first spray column, the second spray column, third spray
Drench tower, the 4th spray column and the 5th spray column, first spray column, the second spray column, third spray column, the 4th spray column and
5th spray column includes at least two layers of packing layer, and the first spray tower bottom is equipped with air inlet, at the top of first spray column with
Side wall at the top of second spray column is connected by sealing pipeline, and the second spray tower bottom passes through with third spray tower bottom
Sealing pipeline is connected, and is connected with the side wall at the top of the 4th spray column by sealing pipeline at the top of the third spray column, institute
It states the 4th spray tower bottom and is connected with the 5th spray tower bottom by sealing pipeline；First spray column, the second spray column,
Third spray column, the 4th spray column and the 5th spray column respectively by water pump and the first water tank, the second water tank, third water tank,
4th water tank and the 5th water tank are connected；In first water tank, the second water tank, third water tank, the 4th water tank and the 5th water tank
It is loaded with spray liquid；Spray liquid in first water tank and the second water tank is water；In the third water tank and the 4th water tank
Spray liquid be aqueous slkali；Spray liquid in 5th water tank is oxidizing agent solution；
At least one water tank in first water tank, the second water tank, third water tank, the 4th water tank and the 5th water tank is multistage water tank,
The series of the multistage water tank is n grades, and n >=2, n a grade water tank are sequentially stacked from the top down, and second level water tank is located at first order water tank
Lower section, n-th grade of water tank are located at bottom, and first order water tank is equipped with water supplement port, and n-th grade of water tank is equipped with discharge outlet, described
Water supplement port is connected by floating ball valve of rehydration with every grade of water tank；Neighbouring two-stage water tank is connected by a siphon pipe, is located at
Upper end siphon pipe in the water tank of upper layer is equipped with water inlet, and the lower end siphon tube wall in lower layer's water tank is equipped with water outlet,
Siphon ball-cock assembly is equipped in other water tanks in addition to n-th grade of water tank, the siphon ball-cock assembly controls on lower end siphon tube wall
The opening and closing of water outlet, when water level decreasing to minimum setting position, siphon ball-cock assembly controls water outlet and opens, and water level rises to highest
When setting position, siphon ball-cock assembly controls water outlet and closes；
The spray column being connected with multistage water tank is multi-stage spray tower, and the multi-stage spray tower is arranged successively net up and down equipped with N grades
Change equipment, N >=2, second level cleaning equipment is located at the lower section of first order cleaning equipment, and N grades of cleaning equipments are located at bottom, the
First class purification equipment is located at the top, and the cleaning equipment includes spray assemblies, is successively fixed with and fills out below the spray assemblies
The bed of material and the collecting tank for collecting absorbing liquid, the bottom of each collecting tank by drain pipe respectively with the level-one in multistage water tank
Water tank is connected；Inlet and liquid outlet are equipped on every grade of water tank, the inlet on adjacent two layers water tank respectively with adjacent two layers
The drain pipe of sump bottom on cleaning equipment is connected, and the liquid outlet on adjacent two layers water tank is purified with adjacent two layers respectively
Spray assemblies in equipment are connected.
2. nitrogen-containing oxide exhaust treatment system as described in claim 1, which is characterized in that logical positioned at the drain side of upper layer water tank
It crosses inlet tube, valve and liquid feeding pump and is connected with the spray assemblies for being located at upper layer cleaning equipment, positioned at the drain side of lower layer's water tank
It is connected by inlet tube, valve and liquid feeding pump with the spray assemblies for being located at lower layer's cleaning equipment.
3. nitrogen-containing oxide exhaust treatment system as claimed in claim 2, which is characterized in that be equipped with supplied gas in the collecting tank
By permeability cell exhaust gas entrance, the upper port position of the permeability cell is higher than sump bottom.
4. nitrogen-containing oxide exhaust treatment system as claimed in claim 3, which is characterized in that the top of the collecting tank is equipped with and opens
Mouthful, the side wall of the collecting tank and the inner wall of the spray column fit closely, and the top of the upper port of the permeability cell is equipped with gear
Water cap, the water stopping cap barrier liquid flow into permeability cell.
5. nitrogen-containing oxide exhaust treatment system as described in claim 1, which is characterized in that the siphon ball-cock assembly is sheathed on down
Hold siphon pipe on, siphon ball-cock assembly can the relative motion above and below the siphon pipe of lower end, the water outlet be set to lower end siphon pipe pipe
On wall, the relative motion of the siphon ball-cock assembly and siphon pipe is used to control the opening and closing of water outlet.
6. shifting progressive automatic water-exchanging system as described in claim 1, which is characterized in that the siphon ball-cock assembly passes through floating ball
Connecting rod is connected with control floating ball, and the other end of the control floating ball is fixedly arranged on roof, and the siphon ball-cock assembly is equipped with vertical
Sliding slot, the floating ball rod can relatively move up and down along the chute, and the siphon ball-cock assembly can decline with water level decreasing, on water level
Before rising to highest setting position, control floating ball controls siphon ball-cock assembly by floating ball rod and relative motion does not occur with siphon pipe,
When water level rises to highest setting position, control floating ball drives siphon ball-cock assembly to move upwards control water outlet by floating ball rod
It closes.
7. nitrogen-containing oxide exhaust treatment system as described in claim 1, which is characterized in that the air inlet of first spray column
It is connected with the gas outlet of surge tank, the surge tank is equipped with air intake and nitrogen oxides entrance.
8. nitrogen-containing oxide exhaust treatment system as described in claim 1, which is characterized in that the oxidizing agent solution is perchloric acid
At least one of sodium, sodium chlorate, sodium chlorite, SODIUM PERCARBONATE and sodium peroxydisulfate；The aqueous slkali is sodium hydroxide solution.
9. nitrogen-containing oxide exhaust treatment system as described in claim 1, which is characterized in that the top of the 5th spray column goes out
Air port is equipped with demisting packing layer.
10. nitrogen-containing oxide exhaust treatment system as described in claim 1, which is characterized in that first water tank, the second water
Heat exchange coil is equipped in case, third water tank, the 4th water tank and the 5th water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811464106.1A CN109432983B (en) | 2018-11-30 | 2018-11-30 | Nitrogen oxide-containing tail gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811464106.1A CN109432983B (en) | 2018-11-30 | 2018-11-30 | Nitrogen oxide-containing tail gas treatment system |
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| CN109432983A true CN109432983A (en) | 2019-03-08 |
| CN109432983B CN109432983B (en) | 2021-04-20 |
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| CN201811464106.1A Active CN109432983B (en) | 2018-11-30 | 2018-11-30 | Nitrogen oxide-containing tail gas treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115414750A (en) * | 2022-08-11 | 2022-12-02 | 安徽理工大学 | Ultrasonic tower type flow-dividing wet type dust removal system and dust removal method |
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| CN109432983B (en) | 2021-04-20 |
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Address after: 529000 1st floor, building 2, 318 Waihai Nanshan Road, Jianghai District, Jiangmen City, Guangdong Province (self edited 03) Patentee after: Jotun (Guangdong) Environmental Technology Co.,Ltd. Address before: 529000 1st floor, building 2, 318 Waihai Nanshan Road, Jianghai District, Jiangmen City, Guangdong Province (self edited 03) Patentee before: JIANGMEN ZUODUN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |