CN108744917A - A kind of industrial waste gas SCR treatment process - Google Patents

A kind of industrial waste gas SCR treatment process Download PDF

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Publication number
CN108744917A
CN108744917A CN201810603919.8A CN201810603919A CN108744917A CN 108744917 A CN108744917 A CN 108744917A CN 201810603919 A CN201810603919 A CN 201810603919A CN 108744917 A CN108744917 A CN 108744917A
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China
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case
stage treatment
cylinder
pull
waste gas
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CN201810603919.8A
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Chinese (zh)
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王鹏
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王鹏
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Priority to CN201810603919.8A priority Critical patent/CN108744917A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75Multi-step processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/54Nitrogen compounds
    • B01D53/56Nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/20Reductants
    • B01D2251/206Ammonium compounds
    • B01D2251/2062Ammonia
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/80Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804UV light

Abstract

The invention belongs to technical field of waste gas treatment, specifically a kind of industrial waste gas SCR treatment process, the technique includes the following steps:Industrial waste gas is passed through to the particle removed in filtering ponds in industrial waste gas, preliminary treatment is carried out to complete industrial waste gas;After removing particle, bacterium is deodorized and killed to industrial waste gas using UV photocatalysis catalytic converter clarifiers and is deodorized;Desulfurization is carried out to purified industrial waste gas using desulfurizing dust-collector;Denitration is carried out to the industrial waste gas after desulfurization using denitration device, forms industrial gasses;The industrial gasses generated after denitration are collected, and the denitrfying agent used in denitrification process is recycled;The present invention can complete the denitration process that de-tastes and fall off to the dust-collection sterilization of industrial waste gas by five steps, have effectively achieved recycling for industrial waste gas, and the denitrfying agent ammonia spirit used is recycled in denitrification process, realize efficiently using for resource.

Description

A kind of industrial waste gas SCR treatment process
Technical field
The invention belongs to technical field of waste gas treatment, specifically a kind of industrial waste gas SCR treatment process.
Background technology
Industrial waste gas refers to generated in plant area of enterprise fuel combustion and production process various and is discharged into containing for air The general name of contaminant gases.These exhaust gas have:Carbon dioxide, carbon disulfide, hydrogen sulfide, fluoride, nitrogen oxides, chlorine, chlorination Hydrogen, carbon monoxide, lead sulfate mercury, beryllide, flue dust and industrial dust, air can be polluted by being discharged into air.These substances pass through Different approach respiratory tracts enters the internal of people, and some directly generates harm, and some also has cumulative effect, the more serious danger of meeting The health of victimization.Different material has Different Effects.Industrial waste gas processing the active carbon adsorption of principle, Production by Catalytic Combustion Process, A variety of principles such as catalytic oxidation, acid-base neutralization method, plasma method.SCR technology (SCR) is to be directed to diesel vehicle That is, under the effect of the catalyst a treatment process of NOx in exhaust emissions sprays into reducing agent ammonia or urea, in tail gas NOx is reduced into N2And H2O.Catalyst has two class of noble metal and base metal.After the technology is also widely used for diesel engine vent gas Processing controls the generation of particle PM, then in off engine control technology excess oxygen by optimizing oil spout and combustion process as possible in machine The nitrogen oxides of lower formation uses urea for vehicle (urea for vehicle is decomposed at a certain temperature generates ammonia) to nitrogen oxides (NOx) selective catalytic reduction is carried out, to achieve the purpose that not only energy saving but also emission reduction, this technology are European mainstream technology roads Line, the long-distance load-carrying vehicle in Europe and motorbus almost all use this technology.
Industrial waste gas processing will distinguish civilian place air purification.Industrial waste gas processing wants that factory floor production can be effectively removed Raw benzene,toluene,xylene, ethyl acetate, acetone butanone, ethyl alcohol, the organic exhaust gas such as acrylic acid, formaldehyde, hydrogen sulfide, titanium dioxide The soda acids exhaust-gas treatment such as sulphur, ammonia.Nitric oxide and sulfur dioxide are pollutants common in industrial gas emission, are generally adopted at present Technology waste gas is handled with three-level alkali cleaning+active carbon adsorption.But the method for this processing exhaust gas is inefficient, Bu Nengyou Processing pollutant in effect ground accomplishes to make industrial waste gas to fall off denitration, and recycling profit can not be carried out to the reducing agent used in processing procedure With.
In consideration of it, a kind of industrial waste gas SCR treatment process of the present invention, by exhaust gas is passed through successively filtering ponds and To remove particulate matter and carry out deodorizing sterilization to exhaust gas in clarifier, then use desulphurization plant and denitration device to Industry Waste successively Gas carries out desulphurization denitration processing, and the device structure used is simple, and the reducing agent ammonium hydroxide to being used in processing procedure realizes recycling It utilizes, improves the treatment effeciency of exhaust gas, save processing cost.
Invention content
In order to make up for the deficiencies of the prior art, the present invention proposes a kind of industrial waste gas SCR treatment process, and the present invention is main For providing a kind of industrial waste gas treatment process.The present invention by being removed industrial waste gas large-scale particle, ordor removing, taking off successively Sulphur and denitration process realize recycling for industrial waste gas so that it becomes industrial gasses, improve resource utilization.
The technical solution adopted by the present invention to solve the technical problems is:At a kind of industrial waste gas SCR of the present invention Science and engineering skill, the treatment process include the following steps:
Step 1:Industrial waste gas is passed through to the particle removed in filtering ponds in industrial waste gas, to complete industrial waste gas progress Preliminary treatment;
Step 2:The industrial waste gas after removing particle in step 1 is carried out using UV photocatalysis catalytic converter clarifiers Purification, is deodorized industrial waste gas and is killed bacterium;
Step 3:Desulfurization is carried out to purified industrial waste gas in step 2 using desulfurizing dust-collector;
Step 4:Denitration is carried out to the industrial waste gas after the desulfurization in step 3 using denitration device, forms industrial gasses;
Step 5:The industrial gasses generated after denitration in step 4 are collected, and to being used in denitrification process Denitrfying agent is recycled;
Denitration device in the step 4 includes coagulation case, nozzle, two stage treatment case, No.1 pipeline, No. two pipes Road, No.1 pump, No. two pumps, coagulation module and two stage treatment module;The coagulation case and two stage treatment case level are put It sets on the ground, coagulation case and two stage treatment case are rectangular box, and two stage treatment case is located at the right side of coagulation case The top internal layer of side, coagulation case opens up cavity, and ammonium hydroxide import and ammonia circulation import, ammonia are opened up at the top of coagulation case Water inlet and ammonia circulation import are communicated with cavity inside, and ammonium hydroxide import and ammonia circulation import are respectively positioned on the top of cavity, ammonia Water cycle import is located at the right side of ammonium hydroxide import, and the left side wall bottom of coagulation case opens up exhaust gas inlet, coagulation case Right side wall opens up gas vent and wastewater outlet, and wastewater outlet is located at the lower section of gas vent;The nozzle is mounted at level-one Case inner top layer is managed, nozzle is connected by pipeline with the cavity of coagulation box top internal layer;A left side for the two stage treatment case Sidewall bottom opens up exhaust gas and crosses mouth, and ammonium hydroxide outflux is opened up at the top of two stage treatment case;The both ends of the No.1 pipeline connect respectively The exhaust gas of the wastewater outlet and two stage treatment case that are connected on coagulation case is crossed on mouth;The both ends of No. two pipelines are connected to On the ammonium hydroxide outflux of two stage treatment box top and the ammonia circulation import of coagulation box top;The No.1 pump and No. two pumps It is separately mounted on No.1 pipeline and No. two pipelines;The coagulation module and two stage treatment module are arranged at two stage treatment Inside case, two stage treatment module is located at the top of coagulation module, and coagulation module is used for entering in two stage treatment case The waste water in portion carries out preliminary treatment, and two stage treatment module is for being further processed the waste water inside two stage treatment case, work When making, by exhaust gas inlet to being passed through industrial waste gas inside coagulation case, then the ammonium hydroxide import for passing through coagulation box top Ammonium hydroxide is passed through inside to coagulation case, ammonium hydroxide sprays from nozzle by the cavity of coagulation box top and enters coagulation Exhaust gas association reaction inside case generates nitrogen, and the nitrogen of generation is discharged into the external world from the gas vent of coagulation case right side wall In air;The coagulation module includes level-one telescopic cylinder, partition board, closing door and pull module;The level-one is stretched gas Cylinder is hinged on the inner bottom of coagulation case, and level-one telescopic cylinder is obliquely installed;The partition board is connected horizontally on two stage treatment On the inner wall of case, partition board is located at the top of level-one telescopic cylinder;Filtering mouth is opened up on the partition board, filters and filtering is installed in mouth Net;The closing door is hinged on the bottom of partition board, and closing door is located at the right side in the left side and level-one telescopic cylinder of filtering mouth, level-one The end of the piston rod of telescopic cylinder is hinged with closing door, and the other end of closing door is contacted with the inner bottom of two stage treatment case; The pull module is located at the right side of filtering mouth, and pull module is for aspirating away the solid waste inside two stage treatment case.
The pull module includes pull-out box, No. three pipelines, No. three pumps, blocking door, No.1 telescopic rod and pull cylinder;Institute State pull-out box and be horizontally arranged at two stage treatment bottom portion, pull-out box is rectangular box, pull-out box without left side side wall, pull-out box Top is contacted with partition board bottom, and the right sidewall bottom of pull-out box opens up No. two through-holes, and No. two through-holes are by No. three pipelines and outside Boundary is connected, and No. three pumps are installed on No. three pipelines;It is hinged on the top left side of pull-out box at the top of the blocking door, stops the bottom of door Portion is contacted with the bottom left of pull-out box;The No.1 telescopic rod is inclined at the inside of pull-out box, and the one of No.1 telescopic rod End connects with blocking door hinge, and the other end and pull-out box inner top layer of No.1 telescopic rod are hinged;The pull cylinder is mounted on two level On the external right avris wall for the treatment of box, the right side wall and pull-out box of the piston rod of pull cylinder horizontal through two stage treatment case The right side wall connection.Ammonium hydroxide in coagulation case is flowed by wastewater outlet and No.1 pipeline in two stage treatment case, control Level-one telescopic cylinder works, and level-one telescopic cylinder makes closing door open, and ammonium hydroxide filters the mistake in mouth by the filtering mouth on partition board Impurity in ammonium hydroxide is blocked in the lower section of partition board by strainer, opens pull cylinder, the piston rod of pull cylinder drive pull-out box to It moves left, pull-out box pushes the mixed liquor of ammonium hydroxide and industrial waste gas to filter mouth, and mixed liquor is reached by filter screen above partition board; When needing except impurity, control No.1 telescopic rod work, No.1 telescopic rod will stop that door is opened, inside two stage treatment case in ammonium hydroxide Impurity enter inside pull-out box, open No. three pumps, No. three pumps extract the impurity in pull-out box at two levels by No. three pipelines out Case is managed, the preliminary purification to ammonium hydroxide is completed.
The two stage treatment module includes two level telescopic cylinder, connecting cylinder, pressing plate, ball seat and water suction module, the two level Telescopic cylinder is mounted on above the top layer of two stage treatment case;The connecting cylinder is mounted below two stage treatment case top layer, connecting cylinder For test tube shape, connecting cylinder bottom opens up No.1 through-hole, and the piston rod of two level telescopic cylinder is passed down through the top of two stage treatment case Inside connecting cylinder;The pressing plate is horizontally arranged at the bottom of the piston rod of two level telescopic cylinder, and pressing plate is disc, pressing plate Round ring boss is arranged in bottom;The ball seat is horizontally set on inside connecting cylinder, and ball seat is convex by the circular ring shape of spring and pressing plate Platform connects, and ball seat is hemispherical, and ball seat bottom opens up via straight up;The water suction module is arranged in the bottom of connecting cylinder, Water suction module is used to absorb the ammonium hydroxide inside two stage treatment case.After ammonium hydroxide is by filtering above mouth arrival partition board, water suction module will Ammonium hydroxide is sucked by the No.1 through-hole of connecting cylinder bottom inside connecting cylinder, and two level telescopic cylinder and No. two pumps are opened, and two level is flexible The piston rod band dynamic pressure plate of cylinder moves downward, and by the via of ball seat bottom, No. two pump by two the ammonium hydroxide inside connecting cylinder Ammonium hydroxide is pumped by ammonium hydroxide outflux and ammonia circulation import in coagulation case by number pipeline from two stage treatment case, realizes ammonium hydroxide Recycle.
The water suction module includes water suction ball, No.1 link block, No. two link blocks, cotton thread and No. two telescopic rods, the suction Water polo is mounted on connecting cylinder bottom, is communicated inside the No.1 through-hole and water suction ball of connecting cylinder bottom, on the ball wall for the ball that absorbs water uniformly Open up No. three through-holes;The No.1 link block is connected on water suction ball, and No.1 link block and No. two link blocks are cuboid, and one Square indentations are opened up at the top of number link block, square indentations are connected with No. three through-holes on water suction ball ball wall, No. two companies The side wall for connecing block is connect by cotton thread with the side wall of No.1 link block, and the top of No. two link blocks passes through No. two telescopic rods and No.1 The bottom of link block connects, and one end of No. two telescopic rods is connect with the bottom of No.1 link block, the other end of No. two telescopic rods and The top connection of No. two link blocks.When work, cotton thread is soaked by ammonium hydroxide, and ammonium hydroxide is transmitted at the top of No.1 link block just by cotton thread In square groove, ammonium hydroxide enters using No. three through-holes on water suction ball ball wall inside water suction ball, using connecting cylinder bottom No.1 through-hole enters inside connecting cylinder, is handled under the action of two stage treatment module.
Folded tube, one end and the No.1 link block of folded tube is arranged in the No.1 link block and No. two the intermediate of link block Bottom connects, and the other end of folded tube is connect with the top of No. two link blocks, and folded tube is located at the inside of cotton thread and No. two are stretched The outside of bar.Folded tube can prevent cotton thread from being wound with No. two telescopic rods, ensure the normal work of device.
The beneficial effects of the invention are as follows:
It is used to remove the large-scale particle in industrial waste gas 1. the present invention includes step 1 to step 5, step 1 and step 2 To complete the preliminary treatment to industrial waste gas, step 3 and step 4 are used to carry out industrial waste gas for object and foul gas ingredient Desulphurization denitration processing, the industrial gasses for making it become to be recycled, step 5 are used for the industrial gasses to being formed after processing It being collected, the present invention completes the processing to industrial waste gas by five steps, and the industrial gasses formed after processing are totally odorless, And the denitrfying agent ammonia spirit that denitration process uses can be recycled in processing procedure, realize efficiently using for resource.
2. the denitration device used in the present invention by the way that pull module is arranged, is pumped, three by the way that No. three pipelines and No. three are arranged Number pump can extract the impurity in the industrial waste gas in pull-out box out two stage treatment casees by No. three pipelines, complete to the preliminary of ammonium hydroxide Purification, improves the purification efficiency and cycle efficieny of ammonium hydroxide.
3. the denitration device used in the present invention can prevent cotton thread and two by the way that the folded tube on the outside of No. two telescopic rods is arranged Number telescopic rod is wound, and ensures the normal work of device.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the operational flowchart of the present invention;
Fig. 2 is the structural schematic diagram of the denitration device of the present invention;
Fig. 3 is partial enlarged view at A in Fig. 2;
Fig. 4 is partial enlarged view at B in Fig. 2;
Fig. 5 is partial enlarged view at C in Fig. 2;
In figure:Coagulation case 1, nozzle 2, two stage treatment case 3,4, No. two pipelines 5 of No.1 pipeline, coagulation module 6, Two stage treatment module 7, cavity 11, ammonium hydroxide import 12, ammonia circulation import 13, exhaust gas inlet 14, gas vent 15, wastewater outlet 16, exhaust gas crosses mouth 31, ammonium hydroxide outflux 32, level-one telescopic cylinder 61, partition board 62, closing door 63, pull module 64, filtering mouth 621, filter screen 622,641, No. three pipelines 642 of pull-out box, blocking door 643, No.1 telescopic rod 644, pull cylinder 645, two level Telescopic cylinder 71, connecting cylinder 72, pressing plate 73, ball seat 74, water suction module 75, via 741, water suction ball 751, No.1 link block 752, No. two link blocks 753, cotton thread 754, No. two telescopic rods 755, folded tubes 8.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below Specific implementation mode is closed, the present invention is further explained.
As shown in Figures 1 to 5, a kind of industrial waste gas SCR treatment process of the present invention, the treatment process include as follows Step:
Step 1:Industrial waste gas is passed through to the particle removed in filtering ponds in industrial waste gas, to complete industrial waste gas progress Preliminary treatment;
Step 2:The industrial waste gas after removing particle in step 1 is carried out using UV photocatalysis catalytic converter clarifiers Purification, is deodorized industrial waste gas and is killed bacterium;
Step 3:Desulfurization is carried out to purified industrial waste gas in step 2 using desulfurizing dust-collector;
Step 4:Denitration is carried out to the industrial waste gas after the desulfurization in step 3 using denitration device, forms industrial gasses;
Step 5:The industrial gasses generated after denitration in step 4 are collected, and to being used in denitrification process Denitrfying agent is recycled;
Denitration device in the step 4 includes coagulation case 1, nozzle 2, two stage treatment case 3, No.1 pipeline 4, two Number pipeline 5, No.1 pump, No. two pumps, coagulation module 6 and two stage treatment module 7;The coagulation case 1 and two stage treatment Case 3 is horizontal positioned on the ground, and coagulation case 1 and two stage treatment case 3 are rectangular box, and two stage treatment case 3 is located at one The right side of grade treatment box 1, the top internal layer of coagulation case 1 open up cavity 11, and the top of coagulation case 1 opens up ammonium hydroxide import 12 and ammonia circulation import 13, ammonium hydroxide import 12 and ammonia circulation import 13 and cavity 11 inside communicate, ammonium hydroxide import 12 and ammonia Water cycle import 13 is respectively positioned on the top of cavity 11, and ammonia circulation import 13 is located at the right side of ammonium hydroxide import 12, coagulation case 1 Left side wall bottom open up exhaust gas inlet 14, the right side wall of coagulation case 1 opens up gas vent 15 and wastewater outlet 16, waste water Outlet 16 is located at the lower section of gas vent 15;The nozzle 2 be mounted on 1 inner top layer of coagulation case, nozzle 2 by pipeline with The cavity 11 of 1 top internal layer of coagulation case is connected;The left side wall bottom of the two stage treatment case 3 opens up exhaust gas and crosses mouth 31, The top of two stage treatment case 3 opens up ammonium hydroxide outflux 32;The both ends of the No.1 pipeline 4 are connected to coagulation case 1 The exhaust gas of wastewater outlet 16 and two stage treatment case 3 is crossed on mouth 31;The both ends of No. two pipelines 5 are connected to two stage treatment case In the ammonia circulation import 13 at 1 top of ammonium hydroxide outflux 32 and coagulation case at 3 tops;The No.1 pump and No. two pumps are distinguished On No.1 pipeline 4 and No. two pipelines 5;The coagulation module 6 and two stage treatment module 7 are arranged at two stage treatment Inside case 3, two stage treatment module 7 is located at the top of coagulation module 6, and coagulation module 6 is used for entering two stage treatment Waste water inside case 3 carries out preliminary treatment, and two stage treatment module 7 is used to carry out the waste water inside two stage treatment case 3 further Processing when work, by exhaust gas inlet 14 to being passed through industrial waste gas inside coagulation case 1, then passes through 1 top of coagulation case Ammonium hydroxide import 12 to being passed through ammonium hydroxide inside coagulation case 1, ammonium hydroxide is by the cavity 11 at 1 top of coagulation case from nozzle 2 The exhaust gas association reaction generation nitrogen for spraying and entering 1 inside of coagulation case, the nitrogen of generation is from 1 right side wall of coagulation case Gas vent 15 be discharged into extraneous air;The coagulation module 6 includes level-one telescopic cylinder 61, partition board 62, closing Door 63 and pull module 64;The level-one telescopic cylinder 61 is hinged on the inner bottom of coagulation case 1, level-one telescopic cylinder 61 It is obliquely installed;The partition board 62 is connected horizontally on the inner wall of two stage treatment case 3, and partition board 62 is located at the upper of level-one telescopic cylinder 61 Side;Filtering mouth 621 is opened up on the partition board 62, filters and filter screen 622 is installed in mouth 621;The closing door 63 is hinged on partition board 62 bottom, closing door 63 are located at the right side in the left side and level-one telescopic cylinder 61 of filtering mouth 621, the work of level-one telescopic cylinder 61 The end of stopper rod is hinged with closing door 63, and the other end of closing door 63 is contacted with the inner bottom of two stage treatment case 3;The pull Module 64 is located at the right side of filtering mouth 621, and pull module 64 is for aspirating away the solid waste inside two stage treatment case 3.
The pull module 64 includes the pipeline 642, three of pull-out box 641, three pump, blocking door 643, No.1 telescopic rod 644 and pull cylinder 645;The pull-out box 641 is horizontally arranged at 3 bottom of two stage treatment case, and pull-out box 641 is rectangle case Body, pull-out box 641 are contacted without left side side wall, the top of pull-out box 641 with 62 bottom of partition board, the right side wall bottom of pull-out box 641 Portion opens up No. two through-holes, and No. two through-holes are connected by No. three pipelines 642 with the external world, and No. three pumps are installed on No. three pipelines 642;It is described The top of blocking door 643 is hinged on the top left side of pull-out box 641, stops the bottom left of the bottom and pull-out box 641 of door 643 Contact;The No.1 telescopic rod 644 is inclined at the inside of pull-out box 641, one end and the blocking door of No.1 telescopic rod 644 643 is hinged, and the other end and 641 inner top layer of pull-out box of No.1 telescopic rod 644 are hinged;The pull cylinder 645 is mounted on two On the external right avris wall of grade treatment box 3, the piston rod of pull cylinder 645 horizontal through two stage treatment case 3 the right side wall with The right side wall connection of pull-out box 641.Ammonium hydroxide in coagulation case 1 is flowed into two by wastewater outlet 16 and No.1 pipeline 4 In grade treatment box 3, control level-one telescopic cylinder 61 works, and level-one telescopic cylinder 61 makes closing door 63 open, and ammonium hydroxide passes through partition board Filtering mouth 621 on 62 filters the lower section that the impurity in ammonium hydroxide is blocked in partition board 62 by the filter screen 622 in mouth 621, opens and takes out Draw cylinder 645, the piston rod of pull cylinder 645 that pull-out box 641 is driven to be moved to the left, pull-out box 641 is by ammonium hydroxide and industrial waste gas Mixed liquor push to filter mouth 621, mixed liquor reaches the top of partition board 62 by filter screen 622;When needing except impurity, control one Number telescopic rod 644 works, and No.1 telescopic rod 644 will stop that door 643 is opened, and the impurity in 3 inside ammonium hydroxide of two stage treatment case enters Inside pull-out box 641, No. three pumps are opened, No. three pumps extract the impurity in pull-out box 641 out two stage treatment by No. three pipelines 642 Case 3 completes the preliminary purification to ammonium hydroxide.
The two stage treatment module 7 includes two level telescopic cylinder 71, connecting cylinder 72, pressing plate 73, ball seat 74 and water suction module 75, the two level telescopic cylinder 71 is mounted on above the top layer of two stage treatment case 3;The connecting cylinder 72 is mounted on two stage treatment case Below 3 top layers, connecting cylinder 72 is test tube shape, and 72 bottom of connecting cylinder opens up No.1 through-hole, the piston rod of two level telescopic cylinder 71 to Under be located inside connecting cylinder 72 across the top of two stage treatment case 3;The pressing plate 73 is horizontally arranged at two level telescopic cylinder 71 The bottom of piston rod, pressing plate 73 are disc, and round ring boss is arranged in 73 bottom of pressing plate;The ball seat 74 is horizontally set on connection Inside cylinder 72, ball seat 74 is connect by spring with the round ring boss of pressing plate 73, and ball seat 74 is hemispherical, and 74 bottom of ball seat is vertical Open up via 741 upwards;The water suction module 75 is arranged in the bottom of connecting cylinder 72, and water suction module 75 is for absorbing two stage treatment Ammonium hydroxide inside case 3.After ammonium hydroxide is by filtering 62 top of the arrival of mouth 621 partition board, ammonium hydroxide is passed through connecting cylinder 72 by water suction module 75 Inside the No.1 through-hole sucking connecting cylinder 72 of bottom, two level telescopic cylinder 71 and No. two pumps, the work of two level telescopic cylinder 71 are opened Stopper rod band dynamic pressure plate 73 moves downward, and by the via 741 of 74 bottom of ball seat, No. two pump by two the ammonium hydroxide inside connecting cylinder 72 Ammonium hydroxide is pumped by ammonium hydroxide outflux 32 and ammonia circulation import 13 in coagulation case 1 by number pipeline 5 from two stage treatment case 3, Realize recycling for ammonium hydroxide.
The water suction module 75 includes water suction ball 751,752, No. two link blocks 753 of No.1 link block, cotton thread 754 and No. two Telescopic rod 755, the water suction ball 751 is in 72 bottom of connecting cylinder, the No.1 through-hole and water suction ball 751 of 72 bottom of connecting cylinder Portion communicates, and No. three through-holes are uniformly opened up on the ball wall for the ball 751 that absorbs water;The No.1 link block 752 is connected on water suction ball 751, No.1 link block 752 and No. two link blocks 753 are cuboid, and the top of No.1 link block 752 opens up square indentations, square Connected in star is connected with No. three through-holes on water suction 751 ball wall of ball, and the side wall of No. two link blocks 753 passes through cotton thread 754 and No.1 The side wall of link block 752 connects, the bottom that the tops of No. two link blocks 753 passes through No. two telescopic rods 755 and No.1 link block 752 Connection, one end of No. two telescopic rods 755 connect with the bottom of No.1 link block 752, the other end of No. two telescopic rods 755 and No. two The top of link block 753 connects.When work, cotton thread 754 is soaked by ammonium hydroxide, and ammonium hydroxide is transmitted to No.1 link block 752 by cotton thread 754 In the square indentations at top, ammonium hydroxide enters using No. three through-holes on water suction 751 ball wall of ball inside water suction ball 751, then passes through The No.1 through-hole for crossing 72 bottom of connecting cylinder enters inside connecting cylinder 72, is handled under the action of two stage treatment module 7.
Folded tube 8, one end of folded tube 8 and No.1 is arranged in the No.1 link block 752 and No. two the intermediate of link block 753 The bottom of link block 752 connects, and the other end of folded tube 8 is connect with the top of No. two link blocks 753, and folded tube 8 is located at cotton thread The outside of 754 inside and No. two telescopic rods 755.Folded tube 8 can prevent cotton thread 754 from being wound with No. two telescopic rods 755, protect The normal work of card device.
In use, by exhaust gas inlet 14 to being passed through industrial waste gas inside coagulation case 1, then pass through coagulation case 1 The ammonium hydroxide import 12 at top is to being passed through ammonium hydroxide inside coagulation case 1, and ammonium hydroxide is by the cavity 11 at 1 top of coagulation case from spray First 2 spray and enter the exhaust gas association reaction generation nitrogen inside coagulation case 1, and the nitrogen of generation is right from coagulation case 1 The gas vent 15 of side wall is discharged into extraneous air, to complete the denitration of industrial waste gas;Ammonium hydroxide in coagulation case 1 passes through Wastewater outlet 16 and No.1 pipeline 4 are flowed into two stage treatment case 3, and control level-one telescopic cylinder 61 works, level-one telescopic cylinder 61 make closing door 63 open, and for ammonium hydroxide by the filtering mouth 621 on partition board 62, the filter screen 622 filtered in mouth 621 will be in ammonium hydroxide Impurity is blocked in the lower section of partition board 62, opens pull cylinder 645, and the piston rod of pull cylinder 645 drives pull-out box 641 to moving to left Dynamic, pull-out box 641 pushes the mixed liquor of ammonium hydroxide and industrial waste gas to filter mouth 621, and mixed liquor reaches partition board by filter screen 622 62 tops;When needing except impurity, control No.1 telescopic rod 644 works, and No.1 telescopic rod 644 will stop that door 643 is opened, two level Impurity in 3 inside ammonium hydroxide for the treatment of box enters inside pull-out box 641, opens No. three pumps, and No. three pump the impurity in pull-out box 641 Two stage treatment case 3 is extracted out by No. three pipelines 642, completes the preliminary purification to ammonium hydroxide.
After ammonium hydroxide is by filtering 62 top of the arrival of mouth 621 partition board, cotton thread 754 is soaked by ammonium hydroxide, and cotton thread 754 transmits ammonium hydroxide Into the square indentations at 752 top of No.1 link block, ammonium hydroxide enters water suction using No. three through-holes on water suction 751 ball wall of ball Inside ball 751, the No.1 through-hole using 72 bottom of connecting cylinder enters inside connecting cylinder 72, opens two level telescopic cylinder 71 and two Number pump, two level telescopic cylinder 71 piston rod band dynamic pressure plate 73 move downward, the ammonium hydroxide inside connecting cylinder 72 passes through 74 bottom of ball seat Ammonium hydroxide is passed through ammonium hydroxide outflux 32 and ammonia circulation by the via 741 in portion, No. two pumps by No. two pipelines 5 from two stage treatment case 3 Import 13 is pumped into coagulation case 1, realizes recycling for ammonium hydroxide.
Although the present invention has been disclosed in the preferred embodiments as above, however, it is not intended to limit the invention.It is any to be familiar with ability The technical staff in domain, without departing from the scope of the technical proposal of the invention, all using in the methods and techniques of the disclosure above Appearance makes many possible changes and modifications to technical solution of the present invention, or is revised as the equivalent embodiment of equivalent variations.Therefore, Every content without departing from technical solution of the present invention is made to the above embodiment any simple according to the technical essence of the invention Modification, equivalent variations and modification, in the range of still falling within technical solution of the present invention protection.

Claims (5)

1. a kind of industrial waste gas SCR treatment process, it is characterised in that:
The treatment process includes the following steps:
Step 1:Industrial waste gas is passed through to the particle removed in filtering ponds in industrial waste gas;
Step 2:The industrial waste gas after removing particle in step 1 is purified using air purifier;
Step 3:Desulfurization is carried out to purified industrial waste gas in step 2;
Step 4:Denitration is carried out to the industrial waste gas after the desulfurization in step 3 using denitration device;
Step 5:Industrial gasses after denitration in step 4 are collected;
Denitration device in the step 4 includes coagulation case (1), nozzle (2), two stage treatment case (3), No.1 pipeline (4), No. two pipelines (5), No.1 pump, No. two pumps, coagulation module (6) and two stage treatment module (7);The coagulation case (1) and two stage treatment case (3) is horizontal positioned on the ground, and coagulation case (1) and two stage treatment case (3) are rectangle case Body, two stage treatment case (3) are located at the right side of coagulation case (1), and the top internal layer of coagulation case (1) opens up cavity (11), Ammonium hydroxide import (12) and ammonia circulation import (13), ammonium hydroxide import (12) and ammonia circulation are opened up at the top of coagulation case (1) It is communicated inside import (13) and cavity (11), ammonium hydroxide import (12) and ammonia circulation import (13) are respectively positioned on the upper of cavity (11) Side, ammonia circulation import (13) are located at the right side of ammonium hydroxide import (12), the left side wall bottom of coagulation case (1) open up exhaust gas into Mouth (14), the right side wall of coagulation case (1) open up gas vent (15) and wastewater outlet (16), and wastewater outlet (16) is located at gas Body exports the lower section of (15);The nozzle (2) is mounted on coagulation case (1) inner top layer, and nozzle (2) passes through No.1 pipeline (4) it is connected with the cavity (11) of coagulation case (1) top internal layer;The left side wall bottom of the two stage treatment case (3) opens up Exhaust gas crosses mouth (31), and ammonium hydroxide outflux (32) is opened up at the top of two stage treatment case (3);Distinguish at the both ends of the No.1 pipeline (4) The exhaust gas of the wastewater outlet (16) and two stage treatment case (3) that are connected to coagulation case (1) is crossed on mouth (31);No. two pipelines (5) both ends are connected to the ammonium hydroxide outflux (32) at the top of two stage treatment case (3) and the ammonium hydroxide at the top of coagulation case (1) It recycles in import (13);The No.1 pump and No. two pumps are separately mounted on No.1 pipeline (4) and No. two pipelines (5);Described one Grade processing module (6) and two stage treatment module (7) are arranged at two stage treatment case (3) inside, and two stage treatment module (7) is located at one The top of grade processing module (6), coagulation module (6) are used for preliminary to entering the internal waste water progress of two stage treatment case (3) Processing, two stage treatment module (7) are used for the waste water internal to two stage treatment case (3) and are further processed;The coagulation Module (6) includes level-one telescopic cylinder (61), partition board (62), closing door (63) and pull module (64);The level-one is stretched gas Cylinder (61) is hinged on the inner bottom of coagulation case (1), and level-one telescopic cylinder (61) is obliquely installed;The partition board (62) is horizontal It is connected on the inner wall of two stage treatment case (3), partition board (62) is located at the top of level-one telescopic cylinder (61);On the partition board (62) Filtering mouth (621) is opened up, filter screen (622) is installed in filtering mouth (621);The closing door (63) is hinged on the bottom of partition board (62) Portion, closing door (63) are located at the right side in the left side and level-one telescopic cylinder (61) of filtering mouth (621), level-one telescopic cylinder (61) The end of piston rod is hinged with closing door (63), and the other end of closing door (63) is contacted with the inner bottom of two stage treatment case (3); The pull module (64) is located at the right side of filtering mouth (621), and pull module (64) is used for the useless of two stage treatment case (3) inside Object aspirates away.
2. a kind of industrial waste gas SCR treatment process according to claim 1, it is characterised in that:The pull module (64) Including pull-out box (641), No. three pipelines (642), No. three pumps, blocking door (643), No.1 telescopic rod (644) and pull cylinder (645);The pull-out box (641) is horizontally arranged at two stage treatment case (3) bottom, and pull-out box (641) is rectangular box, pull Case (641) is contacted without left side side wall, the top of pull-out box (641) with partition board (62) bottom, the right side wall bottom of pull-out box (641) Portion opens up No. two through-holes, and No. two through-holes are connected by No. three pipelines (642) with the external world, and No. three pumps are installed on No. three pipelines (642); The top left side of pull-out box (641), the bottom of blocking door (643) and pull-out box are hinged at the top of the blocking door (643) (641) bottom left contact;The No.1 telescopic rod (644) is inclined at the inside of pull-out box (641), No.1 telescopic rod (644) one end is hinged with blocking door (643), and the other end and pull-out box (641) inner top layer of No.1 telescopic rod (644) are cut with scissors It connects;The pull cylinder (645) is mounted on the external right avris wall of two stage treatment case (3), the piston rod of pull cylinder (645) It is connect with the right side wall of pull-out box (641) horizontal through the right side wall of two stage treatment case (3).
3. a kind of industrial waste gas SCR treatment process according to claim 1, it is characterised in that:The two stage treatment module (7) include that two level telescopic cylinder (71), connecting cylinder (72), pressing plate (73), ball seat (74) and water suction module (75), the two level are stretched Contracting cylinder (71) is mounted on above the top layer of two stage treatment case (3);The connecting cylinder (72) is mounted on two stage treatment case (3) top layer Lower section, connecting cylinder (72) are test tube shape, and connecting cylinder (72) bottom opens up No.1 through-hole, the piston rod of two level telescopic cylinder (71) to Under across the top of two stage treatment case (3) to be located at connecting cylinder (72) internal;The pressing plate (73) is horizontally arranged at the flexible gas of two level The bottom of the piston rod of cylinder (71), pressing plate (73) are disc, and round ring boss is arranged in pressing plate (73) bottom;The ball seat (74) It is internal to be horizontally set on connecting cylinder (72), ball seat (74) is connect by spring with the round ring boss of pressing plate (73), ball seat (74) For hemispherical, ball seat (74) bottom opens up via (741) straight up;The water suction module (75) is arranged in connecting cylinder (72) Bottom, water suction module (75) are used to absorb the internal ammonium hydroxide of two stage treatment case (3).
4. a kind of industrial waste gas SCR treatment process according to claim 3, it is characterised in that:The water suction module (75) Including water suction ball (751), No.1 link block (752), No. two link blocks (753), cotton thread (754) and No. two telescopic rods (755), institute It states water suction ball (751) and is mounted on connecting cylinder (72) bottom, the No.1 through-hole and the internal phase of water suction ball (751) of connecting cylinder (72) bottom It is logical, uniformly open up No. three through-holes on the ball wall of water suction ball (751);The No.1 link block (752) is connected to water suction ball (751) On, No.1 link block (752) and No. two link blocks (753) they are cuboid, and No.1 link block opens up square at the top of (752) Groove, square indentations are connected with No. three through-holes on water suction ball (751) ball wall, and the side wall of No. two link blocks (753) passes through Cotton thread (754) is connect with the side wall of No.1 link block (752), and the top of No. two link blocks (753) passes through No. two telescopic rods (755) It being connect with the bottom of No.1 link block (752), one end of No. two telescopic rods (755) is connect with the bottom of No.1 link block (752), The other end of No. two telescopic rods (755) is connect with the top of No. two link blocks (753).
5. a kind of industrial waste gas SCR treatment process according to claim 4, it is characterised in that:The No.1 link block (752) and folded tube is arranged in No. two the intermediate of link block (753), and one end of folded tube connects with the bottom of No.1 link block (752) It connects, the other end of folded tube is connect with the top of No. two link blocks (753), and folded tube is located at the outside of cotton thread (754).
CN201810603919.8A 2018-06-12 2018-06-12 A kind of industrial waste gas SCR treatment process Withdrawn CN108744917A (en)

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CN107469595A (en) * 2017-09-19 2017-12-15 浙江工匠环境科技有限公司 A kind of dust removal integrated device and method of waste gas of industrial kiln and furnace desulphurization denitration

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3760712B2 (en) * 2000-02-02 2006-03-29 三菱化学株式会社 Method for recovering ammonia in coke oven gas
CN102500207A (en) * 2011-12-16 2012-06-20 东南大学 Coal-fired flue gas desulphurization denitration process and desulphurization denitration device thereof
CN103285723A (en) * 2013-06-07 2013-09-11 蔡如尤 Waste gas treating device
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CN107297137A (en) * 2017-08-18 2017-10-27 安徽国能亿盛环保科技有限公司 A kind of organic waste gas treatment system
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Application publication date: 20181106