CN209576319U - A kind of internal combustion engine nitrogen oxides control system efficiently without secondary pollution - Google Patents
A kind of internal combustion engine nitrogen oxides control system efficiently without secondary pollution Download PDFInfo
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- CN209576319U CN209576319U CN201822117562.0U CN201822117562U CN209576319U CN 209576319 U CN209576319 U CN 209576319U CN 201822117562 U CN201822117562 U CN 201822117562U CN 209576319 U CN209576319 U CN 209576319U
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- reactor
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- reducing agent
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model relates to a kind of internal combustion engine nitrogen oxides control systems efficiently without secondary pollution, including internal combustion engine, Benitration reactor, lithium bromide chiller, chimney, reducing agent reservoir and hydrogen-manufacturing reactor；Internal combustion engine is connect with Benitration reactor and hydrogen-manufacturing reactor respectively；Hydrogen-manufacturing reactor is connect with Benitration reactor, and gaseous jet simulation device is provided between hydrogen-manufacturing reactor and Benitration reactor；Benitration reactor, lithium bromide chiller and chimney are sequentially connected；Reducing agent reservoir is connect with Benitration reactor and hydrogen-manufacturing reactor respectively；Atomizer, rectifier and Ag/Al are installed in Benitration reactor2O3Catalyst layer is equipped with producing hydrogen, catalyzing oxidant layer in hydrogen-manufacturing reactor.The utility model can improve denitration efficiency, while take full advantage of the waste heat of flue gas, improve the efficiency of system, reduce discharge.
Description
Technical field
The utility model relates to internal combustion engine energy source station denitrating flue gas fields, more particularly to are suitable for gas internal-combustion engine height and arrange
The SCR gas denitrifying technology of smoke temperature degree.
Background technique
Internal combustion engine drives electrical power generators using natural gas or fuel oil as fuel, by burning, generates high-grade electric energy, stablizes
Postrun smoke evacuation exhaust temperature is generally at 400 DEG C or more (normal operating temperature is at 450 DEG C or so), and internal combustion engine cylinder jacket water
At 90 DEG C or more, to make full use of the flue gas of engine exhaust and the temperature of jacket water, cigarette is generally arranged in temperature after internal combustion engine
Gas hot water lithium bromide unit realizes summer system using the heat of high-temperature flue gas and jacket water as the heat source of lithium bromide chiller
Cold and winter heating.
Since combustion in IC engine uses piston compression ignition mode, unit itself can not achieve low nitrogen burning, lead to tail gas of discharging fume
Middle NOxDischarge quality concentration is higher, generally in 200mg/m3More than, remote super Air Pollutant Emission requirement.Atmosphere pollution increasingly
Under serious form, reduces Air Pollutant Emission mass concentration and broken in the eyebrows and eyelashes, and NOxDischarge is in Air Pollutant Emission
One important index, so, reduce internal combustion engine NOxDischarge quality concentration also will be combined supply system based on internal combustion engine
One important content.
Selective catalytic reduction (SCR) is current domestic denitration mainstream technology, principle be under the effect of the catalyst,
With NH3For reducing agent, at high temperature selectively with the NO in flue gasxReaction generates nontoxic, free of contamination nitrogen and water, is
Meet the high exhaust gas temperature of internal combustion engine, internal combustion engine generally uses high temperature molecular sieve catalyst, however high temperature molecular sieve catalyst price
Valuableness, and reducing agent NH3The problem of easily causing secondary pollution.
Novel HC-SCR catalyst is currently used for diesel engine NOxIn removing, such as Patent No. 200910226179.1
Chinese patent, the catalyst used is Ag/Al2O3Reducing agent, using is HC type organic (such as methanol, ethyl alcohol), when it
Applied in internal combustion engine denitration, temperature window is only 700 ~ 800K, and denitration efficiency is not ideal, research shows that being added
H2It can be improved the denitration efficiency of HC-SCR and can substantially expand its temperature window, however H2Source and supply be to be difficult to solve
The problem of.
With increasingly stringent, the reduction internal combustion engine NO of atmosphere pollutants emission standardsxDischarge quality concentration will be with internal combustion
One important content of the combined supply system based on machine, novel HC-SCR catalytic reduction technique using non-harmful alcohols material as
Reducing agent and be applied, however its denitration efficiency further increase and the expansion of temperature window is limited by H2, and H2
Source and storage are current also more difficult, therefore flexibly produce H the utility model proposes a kind of2Mode, avoid transport storage etc.
Problem, and it is able to ascend running efficiency of system.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide one kind efficiently without secondary
The internal combustion engine nitrogen oxides control system of pollution, obtains H using reducing agent and fume afterheat2, can be good at solving H2Source
And storage problem.
The technical scheme in the invention for solving the above technical problem is: a kind of internal combustion engine nitrogen efficiently without secondary pollution
Oxide control system, including internal combustion engine, which is characterized in that further include Benitration reactor, lithium bromide chiller, chimney, reducing agent
Reservoir and hydrogen-manufacturing reactor；The internal combustion engine is connect with Benitration reactor and hydrogen-manufacturing reactor respectively, and in internal combustion engine and system
Gas bypass flow control valve is provided between hydrogen reactor；The hydrogen-manufacturing reactor is connect with Benitration reactor, and hydrogen manufacturing is anti-
It answers and is provided with gaseous jet simulation device between device and Benitration reactor；The Benitration reactor, lithium bromide chiller and chimney successively connect
It connects；The reducing agent reservoir is connect with Benitration reactor and hydrogen-manufacturing reactor respectively, and anti-in reducing agent reservoir and hydrogen manufacturing
It answers and is provided with reducing agent bypass flow control valve between device, be provided with reducing agent between reducing agent reservoir and Benitration reactor
Flow control valve；Atomizer, rectifier and Ag/Al are installed in the Benitration reactor2O3Catalyst layer, the hydrogen manufacturing are anti-
It answers and producing hydrogen, catalyzing oxidant layer is installed in device.
The working method of the efficient internal combustion engine nitrogen oxides control system without secondary pollution is as follows: high-temperature flue gas from
Discharge in internal combustion engine, most of flue gas enters Benitration reactor to be mixed with the reducing agent that atomizer sprays, after rectified device,
Into Ag/Al2O3Catalyst layer completes denitration reaction, later by lithium bromide chiller and being discharged by chimney, the flow of reducing agent by
The control of reducing agent flow control valve；For improve denitration efficiency, taken in reducing agent reservoir all the way reducing agent enter hydrogen production reaction
Device generates H under the action of producing hydrogen, catalyzing oxidant layer2, temperature and heat needed for process provide by the exiting flue gas of internal combustion engine；
Reduction dosage needed for flue gas flow, hydrogen manufacturing is controlled by gas bypass flow control valve, reducing agent bypass flow control valve respectively,
The reducing agent that atomizer sprays is provided by reducing agent reservoir；Reducing agent cracks the gas of generation through gas in hydrogen-manufacturing reactor
After the separation of body membrane separator, H2And the flue gas after heat release enters Benitration reactor and is reacted.
Furthermore, reducing agent reservoir is selected to the reducing agent that Benitration reactor and hydrogen-manufacturing reactor provide without secondary
Pollute environmental-friendly ethyl alcohol.
Furthermore, the gaseous jet simulation device of hydrogen-manufacturing reactor outlet setting is by H2It is separately separated out.
The utility model compared with prior art, has the following advantages that and effect:
1, the structure design of the utility model is reasonable, arranges easy for installation.
2, the utility model can produce H using reducing agent and fume afterheat2, it is easy to be flexible, solve H2Produce and store
Problem, and improve the overall performance of system, efficiency.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model embodiment.
In figure: internal combustion engine 1, gas bypass flow control valve 2, producing hydrogen, catalyzing oxidant layer 3, reducing agent bypass flow control valve 4,
Gaseous jet simulation device 5, reducing agent flow control valve 6, rectifier 7, atomizer 8, Ag/Al2O3Catalyst layer 9, Benitration reactor
10, lithium bromide chiller 11, chimney 12, reducing agent reservoir 13, hydrogen-manufacturing reactor 14.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
Referring to Fig. 1, efficient internal combustion engine nitrogen oxides control system without secondary pollution in the present embodiment, including internal combustion engine
1, it further include Benitration reactor 10, lithium bromide chiller 11, chimney 12, reducing agent reservoir 13 and hydrogen-manufacturing reactor 14；Internal combustion engine 1
It is connect respectively with Benitration reactor 10 and hydrogen-manufacturing reactor 14, and be provided with flue gas between internal combustion engine 1 and hydrogen-manufacturing reactor 14
Bypass flow control valve 2；Hydrogen-manufacturing reactor 14 is connect with Benitration reactor 10, and hydrogen-manufacturing reactor 14 and Benitration reactor 10 it
Between be provided with gaseous jet simulation device 5；Benitration reactor 10, lithium bromide chiller 11 and chimney 12 are sequentially connected；Reducing agent reservoir
13 connect with Benitration reactor 10 and hydrogen-manufacturing reactor 14 respectively, and set between reducing agent reservoir 13 and hydrogen-manufacturing reactor 14
It is equipped with reducing agent bypass flow control valve 4, reduction agent flux is provided between reducing agent reservoir 13 and Benitration reactor 10
Control valve 6；Atomizer 8, rectifier 7 and Ag/Al are installed in Benitration reactor 102O3Catalyst layer 9, hydrogen-manufacturing reactor 14
Producing hydrogen, catalyzing oxidant layer 3 is inside installed.
Efficiently the working method of internal combustion engine nitrogen oxides control system without secondary pollution is as follows: high-temperature flue gas is from internal combustion engine
Discharge in 1, most of flue gas enters Benitration reactor 10 to be mixed with the reducing agent ethyl alcohol that atomizer 8 sprays, rectified device 7 it
Afterwards, into Ag/Al2O3Catalyst layer 9 completes denitration reaction, passes through lithium bromide chiller 11 later and is discharged by chimney 12, reducing agent
Flow controlled by reducing agent flow control valve 6；To improve denitration efficiency, reducing agent second all the way is taken in reducing agent reservoir 13
Alcohol enters hydrogen-manufacturing reactor 14, generates H under the action of producing hydrogen, catalyzing oxidant layer 32, temperature and heat needed for process are by internal combustion
The exiting flue gas of machine 1 provides；Reduction dosage needed for flue gas flow, hydrogen manufacturing is respectively by gas bypass flow control valve 2, reducing agent
Bypass flow control valve 4 controls, and the reducing agent that atomizer 8 sprays is provided by reducing agent reservoir 13；Ethyl alcohol is in hydrogen production reaction
The gas that cracking generates in device 14 is after the separation of gaseous jet simulation device 5, by H2It is separately separated out, H2And the flue gas after heat release into
Enter Benitration reactor 10 to be reacted.
Although the utility model is disclosed as above with embodiment, its protection scope being not intended to limit the utility model,
Any technical staff for being familiar with this technology, it is made in the conception and scope for not departing from the utility model to change and retouch,
It all should belong to the protection range of the utility model.
Claims (1)
1. a kind of internal combustion engine nitrogen oxides control system efficiently without secondary pollution, including internal combustion engine (1), which is characterized in that also
Including Benitration reactor (10), lithium bromide chiller (11), chimney (12), reducing agent reservoir (13) and hydrogen-manufacturing reactor (14)；
The internal combustion engine (1) connect with Benitration reactor (10) and hydrogen-manufacturing reactor (14) respectively, and in internal combustion engine (1) and hydrogen production reaction
Gas bypass flow control valve (2) are provided between device (14)；The hydrogen-manufacturing reactor (14) connect with Benitration reactor (10),
And gaseous jet simulation device (5) are provided between hydrogen-manufacturing reactor (14) and Benitration reactor (10)；The Benitration reactor (10),
Lithium bromide chiller (11) and chimney (12) are sequentially connected；The reducing agent reservoir (13) respectively with Benitration reactor (10) and system
Hydrogen reactor (14) connection, and reducing agent bypass flow is provided between reducing agent reservoir (13) and hydrogen-manufacturing reactor (14)
Control valve (4) is provided with reducing agent flow control valve (6) between reducing agent reservoir (13) and Benitration reactor (10)；Institute
It states in Benitration reactor (10) and atomizer (8), rectifier (7) and Ag/Al is installed2O3Catalyst layer (9), the hydrogen manufacturing are anti-
It answers in device (14) and producing hydrogen, catalyzing oxidant layer (3) is installed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822117562.0U CN209576319U (en) | 2018-12-17 | 2018-12-17 | A kind of internal combustion engine nitrogen oxides control system efficiently without secondary pollution |
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| CN201822117562.0U CN209576319U (en) | 2018-12-17 | 2018-12-17 | A kind of internal combustion engine nitrogen oxides control system efficiently without secondary pollution |
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| CN209576319U true CN209576319U (en) | 2019-11-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109589791A (en) * | 2018-12-17 | 2019-04-09 | 华电电力科学研究院有限公司 | A kind of internal combustion engine nitrogen oxides control system and its working method efficiently without secondary pollution |
| CN111983966A (en) * | 2020-08-12 | 2020-11-24 | 伟能机电设备(深圳)有限公司 | Central control method and device for low-nitrogen oxide emission environment-friendly natural gas unit |
-
2018
- 2018-12-17 CN CN201822117562.0U patent/CN209576319U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109589791A (en) * | 2018-12-17 | 2019-04-09 | 华电电力科学研究院有限公司 | A kind of internal combustion engine nitrogen oxides control system and its working method efficiently without secondary pollution |
| CN111983966A (en) * | 2020-08-12 | 2020-11-24 | 伟能机电设备(深圳)有限公司 | Central control method and device for low-nitrogen oxide emission environment-friendly natural gas unit |
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