CN204637940U - A kind of oxynitrides waste gas comprehensive treatment system - Google Patents
A kind of oxynitrides waste gas comprehensive treatment system Download PDFInfo
- Publication number
- CN204637940U CN204637940U CN201520153420.3U CN201520153420U CN204637940U CN 204637940 U CN204637940 U CN 204637940U CN 201520153420 U CN201520153420 U CN 201520153420U CN 204637940 U CN204637940 U CN 204637940U
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- nitric acid
- waste gas
- oxynitrides
- treatment system
- tower
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- Gas Separation By Absorption (AREA)
Abstract
A kind of oxynitrides waste gas comprehensive treatment system, especially relates to a kind of environmental protection, energy-saving oxynitrides comprehensive treatment system.It mainly solves the shortcoming that the efficiency of existing oxynitrides treatment system is low, process is difficult to qualified discharge, operating cost is high, reaches first discharge standard in national discharge standard of air pollutants.The utility model relates to and comprises water washing tank, water washing tank is connected to heating power reactor by exhaust piping, heating power reactor is designed to one or more levels series connection, heating power pipe reactor is provided with air inlet, heating power reactor gas outlet is connected to nitric acid recovery tower by pipeline, nitric acid recovery tower adopts one or more levels to be connected in series, nitric acid recovery tower arranges nitric acid recovery channel, recycle absorbing the nitric acid formed, nitric acid recovery tower is connected to by exhaust piping and efficiently reduces tower, in efficient reduction tower, absorbing liquid is reducing agent, and oxynitrides is reduced to N
2, prevent secondary pollution.
Description
Technical field
The utility model relates to exhaust treatment system, especially relates to a kind of oxynitrides comprehensive treatment system.
Background technology
In chemical industry, nitric plant, oxalic acid factory, ammonium nitrate factory, containing a large amount of oxynitrides waste gas in the process tail gas that some enterprises producing and apply nitric acid such as explosive factory discharge, the discharge of these oxynitrides, not only cause the waste of resource, and to the mankind and ecological environment, there is great harm, the project of waste gas administration of China is started late, by introducing and researching and developing, waste gas pollution control and treatment technical development is very fast, the granting of removing oxynitrides waste gas has some to obtain exploitation, among some are being studied in addition, to study at present and comparatively ripe and have the method for some superiority to be combustion method, absorption method, SCR (SCR), the methods such as SNCR (SNCR) and absorption process.But its system effectiveness is low, process is difficult to qualified discharge, operating cost is high, have much room for improvement.
Summary of the invention
The utility model, for the deficiencies in the prior art, provides a kind of environmental protection, energy-saving oxynitrides comprehensive treatment system.The utility model is that oxynitrides waste gas is introduced into water washing tank, remove in waste gas and enter heating power reactor after dust, heating power reactor passes through heat exchange, reduce the temperature of oxynitrides waste gas, waste gas after heat exchange enters nitric acid recovery tower, dust technology is adopted to absorb oxynitrides waste gas in nitric acid recovery tower, form the nitric acid that concentration is higher, oxynitrides waste gas enters and efficiently reduces tower after dust technology absorbs, in efficient reduction tower, oxynitrides is converted into N by reducing agent
2, then enter aiutage by blower fan and carry out qualified discharge.
For realizing the utility model object, provide following technical scheme: a kind of oxynitrides waste gas comprehensive treatment system, it is characterized in that comprising the water washing tank connected in turn, heating power reactor, nitric acid recovery tower, efficient reduction tower and aiutage, waste gas inlet pipe connects water washing tank, water washing tank upper end outlet connects heating power reactor bottom air inlet by exhaust piping, gas outlet, heating power reactor upper end connects nitric acid recovery tower bottom air inlet by exhaust piping, gas outlet, nitric acid recovery tower upper end connects efficient reduction tower bottom air inlet by exhaust piping, efficient reduction tower top brings out gas port by exhaust piping connecting fan, blower fan connects aiutage.Blower fan forms negative pressure in system after being placed on efficient reduction tower, and under condition of negative pressure, the fresh air energy automatic log-on of oxidation NO, without the need to increasing other tonifying Qi equipment.
As preferably, before heating power reactor, nitric acid recovery tower, efficient reduction tower, exhaust piping arranges air intake pipe, and the NO in system is oxidized to NO
2.
As preferably, heating power reactor bottom condensation-water drain pipeline connects condensation water collection tank, and condensation water collection tank arranges dust technology recovery channel and connects dust technology storage tank, and dust technology recovery channel is provided with elevator pump.
As preferably, nitric acid recovery tower bottom arranges nitric recycle pipeline and connects nitric acid recovery tower upper end spray equipment, and described nitric recycle pipeline is disposed with condenser, circulating pump.Reducing the temperature of circulation fluid by arranging condenser, improving the absorption efficiency of oxynitrides.
As preferably, efficient reduction tower bottom is provided with absorbing liquid circulating line, and absorbing liquid circulating line connects efficient reduction tower top end spray equipment, and absorbing liquid circulating line is provided with circulating pump, is separately provided with chemicals dosing plant and connects absorbing liquid circulating line by drug feeding pipeline.Medicament may be selected to be urea, generates N after oxynitrides and urea reaction
2, H
2o, CO
2, non-secondary pollution thing generates.
As preferably, nitric recycle pipeline is separately provided with pipeline and connects dust technology recovery channel, and pipeline is provided with valve.
As preferably, water washing tank, nitric acid recovery tower and efficient reduction tower are provided with running water inlet channel.
As preferably, heating power reactor is provided with cooling water inlet pipe road, and top is provided with cooling water outlet pipe road.
As preferably, heating power reactor, nitric acid recovery tower are set to one or more levels.Oxynitrides waste gas maximum is converted into nitric acid, reclaims nitric acid in a large number, reduce the consumption of sequential reduction agent simultaneously.
As preferably, be that absorbing liquid circulating line or nitric recycle install pipeline have Pressure gauge.
The utility model carries out closed processes to the oxynitrides waste gas source that produces, and the source place of preventing introduces too many air, reduces designing apparatus scale.
In the utility model water washing tank, water level can come automatically or manual adjustments according to the pressure of oxynitrides waste gas.
Arrange water separator, spray system, filler, filler support in nitric acid recovery tower, efficient reduction tower, gas-liquid contact is abundant.
The utility model beneficial effect: the utility model can realize the comprehensive regulation of oxynitrides waste gas, and toxic emission reaches national grade one discharge standard, system non-secondary pollution produce are raw, can reclaim a large amount of dust technology simultaneously, produce economic benefit.
Accompanying drawing explanation
Fig. 1 is the utility model system schematic.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described.
Embodiment 1: a kind of oxynitrides waste gas comprehensive treatment system, comprise the water washing tank 1 connected in turn, heating power reactor 2, nitric acid recovery tower 3, efficient reduction tower 4 and aiutage 5, waste gas inlet pipe 6 connects water washing tank 1, water washing tank 1 upper end outlet connects heating power reactor 2 bottom air inlet by exhaust piping 7, gas outlet, heating power reactor 2 upper end connects nitric acid recovery tower 3 bottom air inlet by exhaust piping 7, gas outlet, nitric acid recovery tower 3 upper end connects efficient reduction tower 4 bottom air inlet by exhaust piping 7, gas outlet, efficient reduction tower 4 top is by exhaust piping 7 connecting fan 8, blower fan 8 connects aiutage 5.Before heating power reactor 2, nitric acid recovery tower 3, efficient reduction tower 4, exhaust piping 7 arranges air intake pipe 9.Heating power reactor 2 bottom condensation-water drain pipeline 10 connects condensation water collection tank 11, and condensation water collection tank 11 arranges dust technology recovery channel 12 and connects dust technology storage tank 13, dust technology recovery channel 12 is provided with elevator pump 14.Nitric acid recovery tower 3 bottom arranges nitric recycle pipeline 15 and connects nitric acid recovery tower 3 upper end spray equipment, and described nitric recycle pipeline 15 is disposed with condenser 16, circulating pump 17.Efficient reduction tower 4 bottom is provided with absorbing liquid circulating line 18, absorbing liquid circulating line 18 connects efficient reduction tower 4 top spray equipment, absorbing liquid circulating line 18 is provided with circulating pump 17, is separately provided with chemicals dosing plant 20 and connects absorbing liquid circulating line 18 by drug feeding pipeline 21.Nitric recycle pipeline 15 is separately provided with pipeline and connects dust technology recovery channel 12, and pipeline is provided with valve.Water washing tank 1, nitric acid recovery tower 3 and efficient reduction tower 4 are provided with running water inlet channel 22.Heating power reactor 2 is provided with cooling water inlet pipe road 23, and top is provided with cooling water outlet pipe road 24.Absorbing liquid circulating line 18 or nitric recycle pipeline 15 are provided with Pressure gauge.
Produce the oxynitrides produced and enter water washing tank 1, running water or river is added by running water inlet channel 22 in water washing tank 1, by washing, remove dust etc. contained in waste gas, water washing tank bucket 1 exhaust piping is connected to heating power reactor 2, while waste gas enters heating power reactor 2 again, supplement part fresh air by air intake pipe 9, make the NO in oxynitrides be oxidized to NO
2heat exchange is passed through in heating power reactor 2, reduce EGT, heating power reactor 2 is connected to nitric acid recovery tower 3 by exhaust piping 7, establishes spray equipment in nitric acid recovery tower 3, absorbing liquid enters nitric acid recovery tower 3 by condenser 16, circulating pump 17, nitric recycle pipeline 15, after being atomized by spray equipment, from top to bottom, through filler, filler support, contact with the oxynitrides waste gas entering nitric acid recovery tower 3 is reverse, absorb NO and NO in waste gas
2make concentration of nitric acid in absorbing liquid raise simultaneously, nitric acid recovery tower 3 is connected to efficient reduction tower 4 by exhaust piping 7, establish spray equipment in efficient reduction tower 4, absorbing liquid enters efficient reduction tower 4, after being atomized by spray equipment by circulating pump 17, absorbing liquid circulating line 18, from top to bottom, through filler, filler support, efficiently reduce that the oxynitrides waste gas of tower 4 is reverse to be contacted with entering, absorb NO and NO remained in waste gas
2, efficient reduction tower 4 is given vent to anger and is entered blower fan 8 by exhaust piping 7, then enters aiutage 5 and carries out qualified discharge.
During use, if oxynitrides EGT is very high, by can condensed water be produced after heating power reactor 2, condensed water is disposed to condensation water collection tank 11 by condensation-water drain pipeline 10, condensed water condensation process absorption portion oxynitrides, has larger acidity, can be used as dust technology and uses.
During use, nitric acid recovery tower 3 adopts running water to absorb oxynitrides, and when in nitric acid recovery tower 3, dust technology concentration reaches about 20%, in nitric acid recovery tower 3, nitric acid is promoted to dust technology storage tank 13 by circulating pump 17.
During use, efficient reduction tower 4 adopts urea to absorb oxynitrides, after reacting, forms CO with oxynitrides
2, H
2o and N
2, non-secondary pollution.
The foregoing is only specific embodiment of the utility model, but architectural feature of the present utility model is not limited thereto, any those skilled in the art is in the field of utility model, and the change done or modification are all encompassed among the scope of the claims of the present utility model.
Claims (10)
1. an oxynitrides waste gas comprehensive treatment system, it is characterized in that comprising the water washing tank connected in turn, heating power reactor, nitric acid recovery tower, efficient reduction tower and aiutage, waste gas inlet pipe connects water washing tank, water washing tank upper end outlet connects heating power reactor bottom air inlet by exhaust piping, gas outlet, heating power reactor upper end connects nitric acid recovery tower bottom air inlet by exhaust piping, gas outlet, nitric acid recovery tower upper end connects efficient reduction tower bottom air inlet by exhaust piping, efficient reduction tower top brings out gas port by exhaust piping connecting fan, blower fan connects aiutage.
2. a kind of oxynitrides waste gas comprehensive treatment system according to claim 1, before it is characterized in that heating power reactor, nitric acid recovery tower, efficient reduction tower, exhaust piping arranges air intake pipe.
3. a kind of oxynitrides waste gas comprehensive treatment system according to claim 1, it is characterized in that heating power reactor bottom condensation-water drain pipeline connects condensation water collection tank, condensation water collection tank arranges dust technology recovery channel and connects dust technology storage tank, and dust technology recovery channel is provided with elevator pump.
4. a kind of oxynitrides waste gas comprehensive treatment system according to claim 1, it is characterized in that nitric acid recovery tower bottom arranges nitric recycle pipeline and connects nitric acid recovery tower upper end spray equipment, described nitric recycle pipeline is disposed with condenser, circulating pump.
5. a kind of oxynitrides waste gas comprehensive treatment system according to claim 1, it is characterized in that efficiently reducing tower bottom is provided with absorbing liquid circulating line, absorbing liquid circulating line connects efficient reduction tower top end spray equipment, absorbing liquid circulating line is provided with circulating pump, is separately provided with chemicals dosing plant and connects absorbing liquid circulating line by drug feeding pipeline.
6. a kind of oxynitrides waste gas comprehensive treatment system according to claim 4, is characterized in that nitric recycle pipeline is separately provided with pipeline and connects dust technology recovery channel, pipeline is provided with valve.
7. a kind of oxynitrides waste gas comprehensive treatment system according to claim 1, is characterized in that water washing tank, nitric acid recovery tower and efficient reduction tower are provided with running water inlet channel.
8. a kind of oxynitrides waste gas comprehensive treatment system according to claim 1, it is characterized in that heating power reactor is provided with cooling water inlet pipe road, top is provided with cooling water outlet pipe road.
9. a kind of oxynitrides waste gas comprehensive treatment system according to claim 1, is characterized in that heating power reactor, nitric acid recovery tower is set to one or more levels.
10. a kind of oxynitrides waste gas comprehensive treatment system according to claim 4 or 5, is characterized in that absorbing liquid circulating line or nitric recycle install pipeline have Pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520153420.3U CN204637940U (en) | 2015-03-18 | 2015-03-18 | A kind of oxynitrides waste gas comprehensive treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520153420.3U CN204637940U (en) | 2015-03-18 | 2015-03-18 | A kind of oxynitrides waste gas comprehensive treatment system |
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|---|---|
| CN204637940U true CN204637940U (en) | 2015-09-16 |
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ID=54090717
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|---|---|---|---|
| CN201520153420.3U Expired - Fee Related CN204637940U (en) | 2015-03-18 | 2015-03-18 | A kind of oxynitrides waste gas comprehensive treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888589A (en) * | 2015-03-18 | 2015-09-09 | 江苏蓝晨环保科技有限公司 | Comprehensive treatment system for oxynitride exhaust gas |
-
2015
- 2015-03-18 CN CN201520153420.3U patent/CN204637940U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888589A (en) * | 2015-03-18 | 2015-09-09 | 江苏蓝晨环保科技有限公司 | Comprehensive treatment system for oxynitride exhaust gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20200318 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |