WO2024198519A1 - 基于旋流结构的煤矿井下柴油车尾气后处理装置 - Google Patents

基于旋流结构的煤矿井下柴油车尾气后处理装置 Download PDF

Info

Publication number
WO2024198519A1
WO2024198519A1 PCT/CN2023/138370 CN2023138370W WO2024198519A1 WO 2024198519 A1 WO2024198519 A1 WO 2024198519A1 CN 2023138370 W CN2023138370 W CN 2023138370W WO 2024198519 A1 WO2024198519 A1 WO 2024198519A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
exhaust
cyclone
channels
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/138370
Other languages
English (en)
French (fr)
Inventor
聂文
刘承艺
华贇
程卫民
颜霄
于丰宁
朱子廉
廉洁
蒋晨旺
程传兴
张浩男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University of Science and Technology
Original Assignee
Shandong University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong University of Science and Technology filed Critical Shandong University of Science and Technology
Priority to US18/395,886 priority Critical patent/US12085004B1/en
Publication of WO2024198519A1 publication Critical patent/WO2024198519A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the invention belongs to the technical field of exhaust gas treatment and environmental protection, and specifically relates to an exhaust gas post-treatment device for diesel vehicles in coal mines based on a cyclone structure, which is particularly suitable for off-engine purification of exhaust gas from diesel vehicles in coal mines.
  • coal mining enterprises In order to meet the various needs of mine production, coal mining enterprises widely use mining diesel vehicles (such as trackless rubber-wheeled vehicles, etc.) with strong load-bearing capacity, high transportation efficiency and good safety as the main auxiliary transportation equipment underground.
  • Mining diesel vehicles use internal combustion engines as traction power. When the air-fuel ratio (A/F) is less than 14.3, the diesel cannot be fully burned, and a large amount of toxic and harmful exhaust components such as CO (carbon monoxide), HC (hydrocarbons), NOx (nitrogen oxides), and PM (particulate matter) will be produced.
  • CO carbon monoxide
  • HC hydrocarbons
  • NOx nitrogen oxides
  • PM particulate matter
  • diesel vehicle exhaust aftertreatment technologies mainly include in-engine purification technology and out-engine purification technology. Since there is a balance between the purification effects of in-engine purification technology on NOx and PM, it is more necessary to develop out-engine purification technology for diesel vehicle exhaust.
  • a single out-engine purification technology only targets one or several exhaust components, and there is a contradiction between reducing diesel vehicle NOx emissions and PM emissions. It is generally beneficial to reduce NOx. All emission technologies will increase PM emissions, while technologies that reduce PM emissions may increase NOx emissions.
  • Existing exhaust after-treatment devices currently have problems such as low exhaust purification efficiency, poor exhaust purification effect, accumulation of exhaust particulate matter leading to device blockage and failure, and leakage of toxic and harmful gases in the catalytic system leading to secondary pollution.
  • the present invention aims to provide an exhaust after-treatment device for diesel vehicles in coal mines based on a swirl structure, which can reduce the concentration of toxic and harmful components such as NOx and PM in the exhaust gas emitted by diesel vehicles in coal mines to below the concentration limit, and can also avoid problems such as pipeline blockage and failure caused by accumulation of particulate matter in the exhaust after-treatment device, and can also avoid problems such as secondary pollution caused by leakage of toxic and harmful gases such as NH3 , so as to achieve the purpose of reducing exhaust emissions from diesel vehicles in coal mines and improving exhaust purification efficiency.
  • a swirl structure which can reduce the concentration of toxic and harmful components such as NOx and PM in the exhaust gas emitted by diesel vehicles in coal mines to below the concentration limit, and can also avoid problems such as pipeline blockage and failure caused by accumulation of particulate matter in the exhaust after-treatment device, and can also avoid problems such as secondary pollution caused by leakage of toxic and harmful gases such as NH3 , so as to achieve the purpose of reducing exhaust emissions from diesel vehicles in coal mine
  • an exhaust post-treatment device for diesel vehicles in coal mines based on a cyclone structure comprising a water tank, a particulate matter collector, and an intake pipe, a high-speed rotating exhaust gas separator, an exhaust gas catalyst, a circulating NOx selective catalytic reduction system, and an exhaust pipe connected in sequence from front to back;
  • the high-speed rotating exhaust gas separator comprises a Laval tube, a throat tube, a cyclone tube and a first deposition tube which are connected in sequence from front to back, wherein the Laval tube is a contraction section, the cyclone tube is an expansion section, the Laval tube is connected to the air intake pipe, the first deposition tube is connected to the water tank through a first pipeline, and is connected to the particle collection box through a second pipeline; an overflow pipe for connecting the Laval tube and the cyclone tube is installed in the throat tube, an inner vortex fluid and an outer vortex fluid of the same length as the cyclone tube are installed in the cyclone tube, and the front end of the inner vortex fluid is inserted into the overflow pipe; automatic flow regulating valves are respectively arranged on the first and second pipelines, a sprayer is installed at the end of the first pipeline, and a pressure sensor is arranged on the first deposition tube for feedback signals to control the automatic flow regulating valve;
  • the exhaust gas catalyst is provided with wavy channels and straight channels, the channels below the central axis are all wavy channels with an open front end and a closed end, the channels above the central axis are divided into wavy channels and straight channels with a closed front end and an open end, the straight channels are arranged along the inner wall of the exhaust gas catalyst, the channels below the central axis are interconnected at the wave crests, the wavy channels above the central axis are interconnected at the wave crests and are interconnected with the corresponding positions of the straight channels, the two channels adjacent to the central axis are interconnected, and the wave crests of the adjacent channels on the central axis are connected to the wave troughs of the adjacent channels below the central axis, and the inner walls of all channels are coated with perovskite catalysts;
  • the circulating NOx selective catalytic reduction system comprises an NH3 storage tank, an NH3 recovery tank, and a multi-component mixing tube, a cyclone reactor and a second deposition tube connected in sequence from front to back, the multi-component mixing tube is connected to the second deposition tube through a reflux pipe, the second deposition tube is connected to a water tank through a third pipeline, and is connected to the NH3 recovery tank through a fourth pipeline, the NH3 storage tank is connected to the multi-component mixing tube through a fifth pipeline, an electric damper door is arranged near the inner end of the second deposition tube, automatic flow regulating valves are arranged on the third, fourth and fifth pipelines respectively, and sprayers are installed at the ends of the third and fifth pipelines; a NOx sensor for monitoring NOx concentration and a pressure sensor for monitoring internal pressure and NH3 injection pressure are arranged on the multi-component mixing tube, a NOx sensor for monitoring NOx concentration and an NH3 sensor for monitoring NH3 concentration are arranged on the second
  • the first pipeline and the third pipeline are provided with meters.
  • the NH3 recovery tank is filled with a mixture of carbon tetrachloride and dilute sulfuric acid, with carbon tetrachloride in the lower layer and dilute sulfuric acid in the upper layer.
  • the fourth pipeline is a drying pipe and the drying pipe is directly connected to the bottom of the NH3 recovery tank to prevent NH3 from being sucked back or escaping.
  • the perovskite-type catalyst is a lanthanide perovskite-type catalyst.
  • a temperature sensor is also provided on the first deposition tube.
  • the cyclone reactor is composed of a Laval tube, a throat, a cyclone tube, an overflow tube, an inner vortex fluid and an outer vortex fluid, and the connection structure is the same as the connection structure in the high-speed rotating tail gas separator.
  • the straight channels are arranged along the upper semicircular inner wall of the exhaust catalyst.
  • FIG1 is a schematic structural diagram of the present invention.
  • FIG. 2 is a schematic diagram of the structure of a high-speed rotating tail gas separator.
  • FIG. 3 is a schematic diagram of the structure of an exhaust gas catalyst.
  • an exhaust after-treatment device for diesel vehicles in coal mines based on a cyclone structure mainly consists of a water tank 3, a particulate matter collector 4, and an intake pipe 1, a high-speed rotating exhaust gas separator A, an exhaust catalyst B, a circulating NOx selective catalytic reduction system C, and an exhaust pipe 2 which are connected in sequence from front to back.
  • the high-speed rotating tail gas separator A is mainly composed of a Laval tube 5 , a throat tube 6 , a cyclone tube 7 , a first sedimentation tube 8 , an overflow tube 9 , an inner vortex fluid 10 , and an outer vortex fluid 11 .
  • the Laval tube 5, the throat tube 6, the cyclone tube 7 and the first deposition tube 8 are connected in sequence from front to back.
  • the Laval tube 5 is a contraction section
  • the cyclone tube 7 is an expansion section
  • the Laval tube 5 is connected to the intake pipe 1
  • the first deposition tube 8 is connected to the water tank 3 through a first pipeline
  • the particle collection box 4 is used to capture the particles deposited in the first deposition tube 8 of the high-speed rotating exhaust gas separator A.
  • An overflow pipe 9 for connecting the Laval pipe 5 and the swirl tube 7 is installed in the throat pipe 6, and an inner vortex fluid 10 and an outer vortex fluid 11 are installed in the swirl tube 7.
  • the inner vortex fluid 10 and the outer vortex fluid 11 are equal in length to the swirl tube 7, and the inner vortex fluid 10 and the outer vortex fluid 11 are both in the shape of cylindrical helical springs.
  • the front end of the inner vortex fluid 10 is inserted into the overflow pipe 9, and the rear end of the inner vortex fluid 10 is against the rear wall of the swirl tube 7.
  • the front end of the outer vortex fluid 11 is against the front wall of the swirl tube 7, and the rear end of the outer vortex fluid 11 is against the rear wall of the swirl tube 7.
  • the swirl structure formed by the swirl tube 7 combined with the inner vortex fluid 10 and the outer vortex fluid 11 can utilize a strong centrifugal force to achieve the separation of solid particles in the tail gas under high-speed rotation.
  • the throat 6 serves to connect the Laval tube 5 and the cyclone tube 7.
  • the exhaust gas enters the cyclone tube 7 through the Laval tube 5 and the overflow tube 9, and forms a high-speed rotation under the joint action of the inner vortex fluid 10 and the outer vortex fluid 11, and the overflow tube and the inner and outer double vortex fluid structure can significantly enhance the high-speed rotation of the exhaust gas.
  • the first and second pipelines are respectively provided with flow automatic regulating valves 12, and a sprinkler is installed at the end of the first pipeline.
  • the first deposition tube 8 is provided with a pressure sensor for monitoring the pressure change inside the first deposition tube 8, and feeding back a signal to control the flow automatic regulating valve 12, so as to better control and adjust the water flow, thereby controlling the water injection pressure.
  • the first deposition tube 8 is also provided with a temperature sensor for monitoring the exhaust gas temperature change and responding promptly to abnormally high temperature conditions.
  • the pressure sensor transmits electrical signals to the automatic flow regulating valve, the water tank and the particulate matter collection box respectively.
  • the automatic flow regulating valve at the connection between the first sedimentation tube and the water tank connecting pipe is used to adjust the flow of water, which is sprayed through the sprinkler.
  • the automatic flow regulating valve at the connection between the first sedimentation tube and the particulate matter collection box connecting pipe is opened to allow the particulate matter to settle in the particulate matter collection box.
  • the exhaust gas catalyst B is provided with a wavy channel 13 and a straight channel 14.
  • the channels below the central axis are all wavy channels 13, and the channels are open at the front end and closed at the end; the channels above the central axis are divided into wavy channels 13 and straight channels 14, and the channels are closed at the front end and open at the end, and the straight channels 14 are arranged along the inner wall of the exhaust gas catalyst B.
  • the highest point where the wavy channel protrudes upward is the wave crest, and the lowest point where it is sunken downward is the wave trough.
  • the channels below the central axis are connected to each other at the wave crest (see the through white line at the wave crest).
  • the wavy channels above the central axis are connected at the wave crest and are connected to the corresponding positions of the straight channels (see the through white line at the wave crest).
  • the two channels adjacent to the central axis are connected to each other, and the crests of the adjacent channels on the central axis are connected to the troughs of the adjacent channels below the central axis (see the four vertical channels that intersect perpendicularly with the central axis).
  • the exhaust gas flows in from the channel below the central axis, and some particulate matter settles at the trough due to inertia, gravity, etc. and is then separated from the exhaust gas.
  • the remaining components in the exhaust gas enter the channel above the central axis, and after further filtration and reaction, they flow out from the end of the channel above the central axis.
  • straight channels are also arranged on the inner wall of the exhaust catalyst.
  • the channels below the central axis mainly deposit particulate matter through the trough, so there is no need to set up straight channels.
  • the exhaust gas enters from the bottom and exits from the top, and all channels are interconnected to ensure smooth exhaust flow.
  • All pores are coated with a perovskite catalyst, preferably a lanthanide perovskite catalyst.
  • the straight channels 14 are preferably arranged along the upper semicircular inner wall of the exhaust catalyst B.
  • the circulating NOx selective catalytic reduction system C is mainly composed of an NH 3 storage tank 15, an NH 3 recovery tank 16, a multi-component mixing tube 17, a cyclone reactor 18, a second deposition tube 19, and a reflux tube 20.
  • the multi-component mixing tube 17, the cyclone reactor 18, and the second deposition tube 19 are sequentially connected from front to back.
  • the multi-component mixing pipe 17 is connected to the second deposition pipe 19 through a return pipe 20.
  • the second deposition pipe 19 is connected to the water tank 3 through a third pipe, and the second deposition pipe 19 is connected to the NH 3 recovery tank 16 through a fourth pipe.
  • the NH 3 storage tank 15 is connected to the multi-component mixing pipe 17 through a fifth pipe.
  • An electric damper door (not shown in the figure) is provided near the inner end of the second deposition pipe 19.
  • Automatic flow regulating valves 12 (not shown in the figure) are provided on the third, fourth and fifth pipes respectively, and the automatic flow regulating valves 12 are preferably provided near the ends of the corresponding pipes, and sprayers are installed at the ends of the third and fifth pipes.
  • the NH 3 recovery tank 16 is used to collect NH 3 that does not participate in the reaction in the circulating NOx selective catalytic reduction system C.
  • a NOx sensor and a pressure sensor are provided on the multi-component mixing tube 17.
  • the NOx sensor is used to monitor the concentration change of NOx
  • the pressure sensor is used to monitor the pressure change inside the multi-component mixing tube and monitor the injection pressure of NH 3 to better control and adjust the NH 3 flow rate.
  • the NOx sensor quickly transmits an electrical signal to the corresponding automatic flow regulating valve and NH 3 storage tank, and the automatic flow regulating valve adjusts the NH 3 flow rate and sprays it through the sprayer.
  • the second deposition tube 19 is provided with a NOx sensor and an NH 3 sensor, which are used to feedback signals to control the electric damper door and the corresponding automatic flow control valve 12.
  • the NOx sensor is used to monitor the concentration change of NOx
  • the NH 3 sensor is used to monitor the concentration change of NH 3.
  • the NOx sensor transmits an electrical signal to the automatic flow control valve, the electric damper door and the return pipe. At this time, the electric damper door is closed, and the exhaust gas flows back into the multi-component mixing pipe through the return pipe.
  • the NOx sensor transmits an electrical signal to the automatic flow control valve, and the sprayer stops spraying.
  • the NH 3 sensor When the NH 3 concentration exceeds the allowable concentration limit, the NH 3 sensor transmits an electrical signal to the automatic flow control valve, the water tank and the NH 3 recovery tank.
  • the automatic flow control valve on the third pipeline adjusts the flow of water and sprays it through the sprinkler.
  • the automatic flow control valve on the fourth pipeline opens to recover NH 3 into the NH 3 recovery tank.
  • the NH 3 sensor transmits an electrical signal to the automatic flow control valve and the electric damper door on the third pipeline. The sprinkler stops spraying, the electric damper door opens, and the exhaust gas is discharged.
  • a meter 21 is also provided on the first pipeline and the third pipeline.
  • the NH 3 recovery box 16 contains a mixture of carbon tetrachloride and dilute sulfuric acid, with carbon tetrachloride in the lower layer and dilute sulfuric acid in the upper layer.
  • the fourth pipeline is a drying pipe and the drying pipe directly passes through the bottom of the NH 3 recovery box 16 to prevent NH 3 from being sucked back or escaping.
  • the cyclone reactor 18 is preferably composed of a Laval tube 5, a throat 6, a cyclone tube 7, an overflow tube 9, an inner vortex fluid 10 and an outer vortex fluid 11, and the connection structure is the same as the connection structure of the Laval tube 5, the throat 6, the cyclone tube 7, the overflow tube 9, the inner vortex fluid 10 and the outer vortex fluid 11 in the high-speed rotating tail gas separator A, which will not be repeated here.
  • the cyclone reactor can not only promote the reaction rate of NOx and NH3 in the tail gas, but also make the two fully mixed and react.
  • the main technical problems to be solved by the present invention are: how to reduce the concentrations of NOx and PM in the exhaust gas emitted by diesel vehicles in coal mines to below the concentration limit to the greatest extent, how to avoid or reduce the accumulation of particulate matter during the exhaust gas purification process of diesel vehicles in coal mines, and how to avoid or reduce the leakage of NH3 while ensuring that NH3 and NOx fully react.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

一种基于旋流结构的煤矿井下柴油车尾气后处理装置，包括水箱（3）、颗粒物捕集器（4）、进气管（1）、高速旋转尾气分离器（A）、尾气催化器（B）、循环式NOx选择性催化还原系统（C）、排气管（2）；高速旋转尾气分离器（A）包括Laval管（5）、喉管（6）、旋流管（7）与第一沉积管（8）；尾气催化器（B）内设波浪形孔道（13）和直孔道（14）；循环式NOx选择性催化还原系统（C）包括NH 3储存罐（15）、NH 3回收箱（16），以及由前到后依次相连的多组分混合管（17）、旋流反应器（18）和第二沉积管（19）。该装置将煤矿井下柴油车排放尾气中的NOx、PM等有毒有害成分的浓度降低至浓度限值以下，避免尾气后处理装置因颗粒物积聚导致的管道堵塞，避免NH 3泄漏导致的二次污染，以达到减少煤矿井下柴油车尾气排放、提高尾气净化效率的目的。

Description

基于旋流结构的煤矿井下柴油车尾气后处理装置 技术领域
本发明属于尾气处理和环保技术领域，具体涉及一种基于旋流结构的煤矿井下柴油车尾气后处理装置，特别适用于煤矿井下柴油车尾气机外净化处理。
背景技术
为满足矿井生产的多种需要，各煤矿企业广泛应用载重能力强、运输效率高、安全性好的矿山柴油车辆(如无轨胶轮车等)作为井下主要辅助运输设备。矿山柴油车辆以内燃机为牵引动力，当空燃比(A/F)小于14.3时，柴油得不到充分燃烧，就会产生大量的CO(一氧化碳)、HC(碳氢化合物)、NOx(氮氧化物)、PM(微粒)等有毒有害尾气成分。由于井下巷道断面积大、风量小、风速低，且工作面多为微速通风，使得矿山燃油车辆排放的尾气无法及时疏散而产生积聚，且当多种成分同时出现、相互作用时，会对井下人员的健康安全产生极大威胁。因此，必须采取措施以减少煤矿井下柴油车尾气污染。
目前，柴油车尾气后处理技术主要包括机内净化技术和机外净化技术，由于机内净化技术对NOx和PM的净化效果之间存在平衡关系，因此更有必要发展柴油车尾气机外净化技术。单一的机外净化技术只针对某一种或某几种尾气成分，而且降低柴油车NOx排放和PM排放之间是矛盾的，一般有利于降低NOx 排放的技术都会使PM排放增加，而减少PM排放的技术又可能增加NOx排放。目前已有的尾气后处理装置普遍存在尾气净化效率低、尾气净化效果差、尾气颗粒物积聚导致装置堵塞失效、催化系统中有毒有害气体泄漏导致二次污染等问题。
发明内容
本发明旨在提供一种基于旋流结构的煤矿井下柴油车尾气后处理装置，可以将煤矿井下柴油车排放尾气中的NOx、PM等有毒有害成分的浓度降低至浓度限值以下，也可以避免尾气后处理装置因颗粒物积聚导致的管道堵塞、失效等问题，还可以避免NH3等有毒有害气体泄漏导致的二次污染等问题，以达到减少煤矿井下柴油车尾气排放、提高尾气净化效率的目的。
为此，本发明所采用的技术方案为：一种基于旋流结构的煤矿井下柴油车尾气后处理装置，包括水箱、颗粒物捕集器，以及由前到后依次相连的进气管、高速旋转尾气分离器、尾气催化器、循环式NOx选择性催化还原系统、排气管；
所述高速旋转尾气分离器包括由前到后依次相连的Laval管、喉管、旋流管与第一沉积管，所述Laval管为收缩段，旋流管为扩张段，Laval管与进气管相连，第一沉积管通过第一管路与水箱相连，通过第二管路与颗粒物捕集箱相连；喉管内安装有用于连通Laval管与旋流管的溢流管，旋流管内安装有与旋流管等长的内旋涡流体和外旋涡流体，且内旋涡流体的前端插入溢流管内；第一、第二管路上分别设置有流量自动调节阀，在第一管路的末端安装喷淋器，第一沉积管上设有压力传感器，用于反馈信号以控制流量自动调节阀；
所述尾气催化器内设波浪形孔道和直孔道，中轴线以下孔道全部为波浪形孔道且孔道前端开口、末端闭口，中轴线以上孔道分为波浪形孔道与直孔道且孔道为前端闭口、末端开口，所述直孔道沿着尾气催化器的内壁排列，中轴线以下孔道之间在波峰处相互连通，中轴线以上波浪形孔道之间在波峰处连通并与直孔道对应位置相互连通，与中轴线相邻的两个孔道相互连通，且中轴线上相邻的孔道的波峰处连接中轴线下相邻的孔道的波谷处，所有孔道内壁上均涂覆有钙钛矿型催化剂；
所述循环式NOx选择性催化还原系统包括NH3储存罐、NH3回收箱，以及由前到后依次相连的多组分混合管、旋流反应器和第二沉积管，多组分混合管与第二沉积管通过回流管相连，第二沉积管通过第三管路与水箱相连，通过第四管路与NH3回收箱相连，NH3储存罐通过第五管路与多组分混合管相连，第二沉积管内部末端附近设有电动挡板门，第三、第四、第五管路上分别设置有流量自动调节阀，在第三、第五管路的末端安装喷淋器；多组分混合管上设有用于监测NOx浓度的NOx传感器、用于监测内部压力和NH3喷射压力的压力传感器，第二沉积管上设有用于监测NOx浓度的NOx传感器、用于监测NH3浓度的NH3传感器，用于反馈信号以控制电动挡板门及各自对应的流量自动调节阀。
作为上述方案的优选，所述第一管路、第三管路上设置有计量表。
进一步优选为，所述NH3回收箱内装有四氯化碳与稀硫酸混合液，四氯化碳在下层，稀硫酸在上层，第四管路为干燥管且干燥管直通NH3回收箱底部，以防NH3倒吸或逸出。
进一步优选为，所述钙钛矿型催化剂选用镧系钙钛矿型催化剂。
进一步优选为，所述第一沉积管上还设置有设有温度传感器。
进一步优选为，所述旋流反应器由Laval管、喉管、旋流管、溢流管、内旋涡流体和外旋涡流体组成，并且连接结构与高速旋转尾气分离器中的连接结构相同。
进一步优选为，所述直孔道沿着尾气催化器的上半圆内壁排满。
本发明的有益效果：(1)能显著改善尾气中颗粒物的过滤效果，避免或减少颗粒物的堵塞导致装置失效的问题，减少煤矿井下柴油车尾气排放、提高尾气净化效率、避免尾气颗粒物堵塞、减少有毒有害气体二次污染的功能，提高了尾气后处理装置的使用寿命；(2)能避免或减少NH3泄漏引发的二次污染问题，提高NH3与NOx的反应速率，避免了还原剂的浪费，节约了使用成本，减少了对井下作业人员的健康威胁，有利于营造良好的井下工作环境；(3)设计合理、安装方便、所需成本低。
附图说明
图1为本发明的结构示意图。
图2为高速旋转尾气分离器的结构示意图。
图3为尾气催化器的结构示意图。
具体实施方式
下面通过实施例并结合附图，对本发明作进一步说明：
如图1所示，一种基于旋流结构的煤矿井下柴油车尾气后处理装置，主要由水箱3、颗粒物捕集器4，以及由前到后依次相连的进气管1、高速旋转尾气分离器A、尾气催化器B、循环式NOx选择性催化还原系统C、排气管2组成。
结合图1、图2所示，高速旋转尾气分离器A主要由Laval管5、喉管6、旋流管7、第一沉积管8、溢流管9、内旋涡流体10、外旋涡流体11组成。
Laval管5、喉管6、旋流管7与第一沉积管8由前到后依次相连。Laval管5为收缩段，旋流管7为扩张段，Laval管5与进气管1相连，第一沉积管8通过第一管路与水箱3相连，通过第二管路与颗粒物捕集箱4相连。颗粒物捕集箱4用于捕集所述的高速旋转尾气分离器A的第一沉积管8中沉积下来的颗粒物。
喉管6内安装有用于连通Laval管5与旋流管7的溢流管9，旋流管7内安装有内旋涡流体10和外旋涡流体11。内旋涡流体10、外旋涡流体11与旋流管7等长，内旋涡流体10、外旋涡流体11均为圆柱螺旋弹簧状。内旋涡流体10的前端插入溢流管9内，内旋涡流体10的后端抵在旋流管7的后壁上。外旋涡流体11的前端抵在旋流管7的前壁上，外旋涡流体11的后端抵在旋流管7的后壁上。旋流管7结合内旋涡流体10和外旋涡流体11构成的旋流结构，可利用强大的离心力实现尾气中固体颗粒物在高速旋转下的分离。
喉管6起到连接Laval管5与旋流管7的作用。尾气经Laval管5、溢流管9进入旋流管7，并在内旋涡流体10、外旋涡流体11的共同作用下形成高速旋转，且溢流管与内、外双旋涡流体结构能显著增强尾气的高速旋转。
第一、第二管路上分别设置有流量自动调节阀12，在第一管路的末端安装喷淋器。第一沉积管8上设有压力传感器，用于监测第一沉积管8内部的压力变化，反馈信号以控制流量自动调节阀12，对水流量进行更好地控制与调节，从而控制水的喷射压力。第一沉积管8上还设置有设有温度传感器，用于监测尾气温度变化并对异常高温情况及时做出响应。
经过高速旋转的尾气到达第一沉积管时，压力传感器将电信号分别传输给流量自动调节阀、水箱与颗粒物捕集箱，第一沉积管与水箱连接管连接处的流量自动调节阀用于调节水的流量，通过喷淋器进行喷洒，同时第一沉积管与颗粒物捕集箱连接管连接处的流量自动调节阀打开，使颗粒物沉降至颗粒物捕集箱内。
结合图1、图3所示，尾气催化器B内设波浪形孔道13和直孔道14。中轴线以下孔道全部为波浪形孔道13且孔道前端开口、末端闭口；中轴线以上孔道分为波浪形孔道13与直孔道14两种，且孔道为前端闭口、末端开口，直孔道14沿着尾气催化器B的内壁排列。
波浪形孔道向上突起的最高点处为波峰，向下凹陷的最低点处为波谷。中轴线以下孔道之间在波峰处相互连通(见波峰处的贯通白线)。中轴线以上波浪形孔道之间在波峰处连通并与直孔道对应位置相互连通(见波峰处的贯通白线)。与中轴线相邻的两个孔道相互连通，且中轴线上相邻的孔道的波峰处连接中轴线下相邻的孔道的波谷处(见与中轴线垂直相交的四条竖直通道)。尾气从中轴线以下孔道流入，在波谷处部分颗粒物由于惯性、重力等作用发生沉降进而从尾气中分离出来，尾气中剩余成分进入中轴线以上孔道，经过进一步过滤、反应后从中轴线以上孔道的末端流出。
为最大限度地利用内腔布置孔道，以增大尾气与催化剂的接触面积和反应路线，中轴线以上孔道除设置波浪形孔道外，还利用尾气催化器的内壁布设直孔道。中轴线以下孔道主要通过波谷沉积颗粒物，因此不需要设置直孔道。尾气下进上出，所有孔道相互连通，以确保尾气顺畅流出。
所有孔道内壁上均涂覆有钙钛矿型催化剂，最好选用镧系钙钛矿型催化 剂。直孔道14最好沿着尾气催化器B的上半圆内壁排满。
如图1所示，循环式NOx选择性催化还原系统C主要由NH3储存罐15、NH3回收箱16、多组分混合管17、旋流反应器18、第二沉积管19、回流管20组成。多组分混合管17、旋流反应器18和第二沉积管19由前到后依次相连。
多组分混合管17与第二沉积管19通过回流管20相连。第二沉积管19通过第三管路与水箱3相连，第二沉积管19通过第四管路与NH3回收箱16相连。NH3储存罐15通过第五管路与多组分混合管17相连。第二沉积管19内部末端附近设有电动挡板门(图中未示出)。第三、第四、第五管路上分别设置有流量自动调节阀12(图中未示出)，流量自动调节阀12最好设置在相应管路的末端附近，在第三、第五管路的末端安装喷淋器。NH3回收箱16用于收集循环式NOx选择性催化还原系统C中未参与反应的NH3。
多组分混合管17上设有NOx传感器和压力传感器。NOx传感器用于监测NOx的浓度变化，压力传感器用于监测多组分混合管内部的压力变化，并对NH3的喷射压力进行监测，以对NH3流量进行更好的控制与调节。当NOx浓度超过浓度限值时，NOx传感器将电信号迅速传输给相应的流量自动调节阀和NH3储存罐，流量自动调节阀调节NH3流量，通过喷淋器进行喷洒。
第二沉积管19上设有NOx传感器和NH3传感器，用于反馈信号以控制电动挡板门及各自对应的流量自动调节阀12。NOx传感器用于监测NOx的浓度变化，NH3传感器用以监测NH3的浓度变化。当NOx浓度仍超过浓度限值时，NOx传感器将电信号传输至流量自动调节阀、电动挡板门与回流管，此时电动挡板门关闭，尾气经回流管重新流入到多组分混合管中。当NOx浓度降低至浓度限值以下时，NOx传感器将电信号传输至流量自动调节阀，喷淋器停止喷 洒。当NH3浓度超过浓度允许限值时，NH3传感器将电信号传输至流量自动调节阀、水箱与NH3回收箱，第三管路上的流量自动调节阀调节水的流量，通过喷淋器进行喷洒，同时第四管路上的流量自动调节阀打开，将NH3回收至NH3回收箱内。当NH3浓度降低至浓度限值以下时，NH3传感器将电信号传输至第三管路上的流量自动调节阀与电动挡板门，喷淋器停止喷洒，电动挡板门打开，尾气排出。
最好是，第一管路、第三管路上还设置有计量表21。
NH3回收箱16内装有四氯化碳与稀硫酸混合液，四氯化碳在下层，稀硫酸在上层，第四管路为干燥管且干燥管直通NH3回收箱16底部，以防NH3倒吸或逸出。
旋流反应器18最好由Laval管5、喉管6、旋流管7、溢流管9、内旋涡流体10和外旋涡流体11组成，并且连接结构与高速旋转尾气分离器A中的Laval管5、喉管6、旋流管7、溢流管9、内旋涡流体10和外旋涡流体11的连接结构相同，在此不再赘述。旋流反应器既能促进尾气中NOx与NH3的反应速率，又能使二者充分混合、反应。
本发明所需解决的主要技术问题是：如何最大程度地降低煤矿井下柴油车排放尾气中NOx与PM的浓度至浓度限值以下，如何避免或减少煤矿井下柴油车尾气净化过程中颗粒物的积聚，如何在保证NH3与NOx充分反应的前提下避免或减少NH3的泄漏。

Claims (7)

  1. 一种基于旋流结构的煤矿井下柴油车尾气后处理装置，其特征在于：包括水箱(3)、颗粒物捕集器(4)，以及由前到后依次相连的进气管(1)、高速旋转尾气分离器(A)、尾气催化器(B)、循环式NOx选择性催化还原系统(C)、排气管(2)；
    所述高速旋转尾气分离器(A)包括由前到后依次相连的Laval管(5)、喉管(6)、旋流管(7)与第一沉积管(8)，所述Laval管(5)为收缩段，旋流管(7)为扩张段，Laval管(5)与进气管(1)相连，第一沉积管(8)通过第一管路与水箱(3)相连，通过第二管路与颗粒物捕集箱(4)相连；喉管(6)内安装有用于连通Laval管(5)与旋流管(7)的溢流管(9)，旋流管(7)内安装有与旋流管(7)等长的内旋涡流体(10)和外旋涡流体(11)，且内旋涡流体(10)的前端插入溢流管(9)内；第一、第二管路上分别设置有流量自动调节阀(12)，在第一管路的末端安装喷淋器，第一沉积管(8)上设有压力传感器，用于反馈信号以控制流量自动调节阀(12)；
    所述尾气催化器(B)内设波浪形孔道(13)和直孔道(14)，中轴线以下孔道全部为波浪形孔道(13)且孔道前端开口、末端闭口，中轴线以上孔道分为波浪形孔道(13)与直孔道(14)且孔道为前端闭口、末端开口，所述直孔道(14)沿着尾气催化器(B)的内壁排列，中轴线以下孔道之间在波峰处相互连通，中轴线以上波浪形孔道之间在波峰处连通并与直孔道对应位置相互连通，与中轴线相邻的两个孔道相互连通，且中轴线上相邻的孔道的波峰处连接中轴线下相邻的孔道的波谷处，所有孔道内壁上均涂覆有钙钛矿 型催化剂；
    所述循环式NOx选择性催化还原系统(C)包括NH3储存罐(15)、NH3回收箱(16)，以及由前到后依次相连的多组分混合管(17)、旋流反应器(18)和第二沉积管(19)，多组分混合管(17)与第二沉积管(19)通过回流管(20)相连，第二沉积管(19)通过第三管路与水箱(3)相连，通过第四管路与NH3回收箱(16)相连，NH3储存罐(15)通过第五管路与多组分混合管(17)相连，第二沉积管(19)内部末端附近设有电动挡板门，第三、第四、第五管路上分别设置有流量自动调节阀(12)，在第三、第五管路的末端安装喷淋器；多组分混合管(17)上设有用于监测NOx浓度的NOx传感器、用于监测内部压力和NH3喷射压力的压力传感器，第二沉积管(19)上设有用于监测NOx浓度的NOx传感器、用于监测NH3浓度的NH3传感器，用于反馈信号以控制电动挡板门及各自对应的流量自动调节阀(12)。
  2. 根据权利要求1所述的基于旋流结构的煤矿井下柴油车尾气后处理装置，其特征在于：所述第一管路、第三管路上设置有计量表(21)。
  3. 根据权利要求1所述的基于旋流结构的煤矿井下柴油车尾气后处理装置，其特征在于：所述NH3回收箱(16)内装有四氯化碳与稀硫酸混合液，四氯化碳在下层，稀硫酸在上层，第四管路为干燥管且干燥管直通NH3回收箱(16)底部，以防NH3倒吸或逸出。
  4. 根据权利要求1所述的基于旋流结构的煤矿井下柴油车尾气后处理装置，其特征在于：所述钙钛矿型催化剂选用镧系钙钛矿型催化剂。
  5. 根据权利要求1所述的基于旋流结构的煤矿井下柴油车尾气后处理装置，其特征在于：所述第一沉积管(8)上还设置有设有温度传感器。
  6. 根据权利要求1所述的基于旋流结构的煤矿井下柴油车尾气后处理装置，其特征在于：所述旋流反应器(18)由Laval管(5)、喉管(6)、旋流管(7)、溢流管(9)、内旋涡流体(10)和外旋涡流体(11)组成，并且连接结构与高速旋转尾气分离器(A)中的连接结构相同。
  7. 根据权利要求1所述的基于旋流结构的煤矿井下柴油车尾气后处理装置，其特征在于：所述直孔道(14)沿着尾气催化器(B)的上半圆内壁排满。
PCT/CN2023/138370 2023-03-31 2023-12-13 基于旋流结构的煤矿井下柴油车尾气后处理装置 Ceased WO2024198519A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US18/395,886 US12085004B1 (en) 2023-03-31 2023-12-26 Swirl structure-based exhaust aftertreatment device for underground mining diesel vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202310332173.2 2023-03-31
CN202310332173.2A CN116357432B (zh) 2023-03-31 2023-03-31 基于旋流结构的煤矿井下柴油车尾气后处理装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/395,886 Continuation US12085004B1 (en) 2023-03-31 2023-12-26 Swirl structure-based exhaust aftertreatment device for underground mining diesel vehicle

Publications (1)

Publication Number Publication Date
WO2024198519A1 true WO2024198519A1 (zh) 2024-10-03

Family

ID=86906641

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/138370 Ceased WO2024198519A1 (zh) 2023-03-31 2023-12-13 基于旋流结构的煤矿井下柴油车尾气后处理装置

Country Status (2)

Country Link
CN (1) CN116357432B (zh)
WO (1) WO2024198519A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119959480A (zh) * 2025-02-10 2025-05-09 蒙城县方正机动车安全技术检测有限公司 一种车辆尾气检测装置
CN121111342A (zh) * 2025-11-14 2025-12-12 中国矿业大学 一种煤矿井下通风风量确定方法、系统、设备及介质

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12085004B1 (en) * 2023-03-31 2024-09-10 Shandong University Of Science And Technology Swirl structure-based exhaust aftertreatment device for underground mining diesel vehicle
CN116357432B (zh) * 2023-03-31 2025-03-25 山东科技大学 基于旋流结构的煤矿井下柴油车尾气后处理装置
CN117432503A (zh) * 2023-12-20 2024-01-23 泰州威虎环保科技有限公司 一种柴油机尾气净化装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005061235A (ja) * 2003-08-12 2005-03-10 Sakura Shokai:Kk ディーゼルエンジンの排気ガス浄化装置
CN101539046A (zh) * 2008-03-21 2009-09-23 通用汽车环球科技运作公司 带有流动装置的微粒物过滤器组件
CN103775253A (zh) * 2014-02-12 2014-05-07 中国船舶重工集团公司第七一一研究所 一种用于柴油机的废气预处理系统
CN108049943A (zh) * 2017-11-24 2018-05-18 汪家琳 内燃机尾气颗粒物炭黑净化处理装置与方法
CN211950638U (zh) * 2020-01-07 2020-11-17 山东交通学院 以40％甲胺水溶液为还原剂的选择性非催化还原装置
KR102442108B1 (ko) * 2022-01-10 2022-09-14 주식회사 크린어스 디젤엔진 배기가스 저감시스템 및 동작 방법
CN116357432A (zh) * 2023-03-31 2023-06-30 山东科技大学 基于旋流结构的煤矿井下柴油车尾气后处理装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134344A (zh) * 2015-08-17 2015-12-09 南京航空航天大学 一种柴油车尾气污染物同步催化净化耦合装置
CN207004607U (zh) * 2017-06-08 2018-02-13 南京交通职业技术学院 一种双口螺旋式汽车尾气处理装置
CN109707495A (zh) * 2018-12-19 2019-05-03 浙江大学 基于高铬不锈钢的柴油机尾气后处理系统及处理方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005061235A (ja) * 2003-08-12 2005-03-10 Sakura Shokai:Kk ディーゼルエンジンの排気ガス浄化装置
CN101539046A (zh) * 2008-03-21 2009-09-23 通用汽车环球科技运作公司 带有流动装置的微粒物过滤器组件
CN103775253A (zh) * 2014-02-12 2014-05-07 中国船舶重工集团公司第七一一研究所 一种用于柴油机的废气预处理系统
CN108049943A (zh) * 2017-11-24 2018-05-18 汪家琳 内燃机尾气颗粒物炭黑净化处理装置与方法
CN211950638U (zh) * 2020-01-07 2020-11-17 山东交通学院 以40％甲胺水溶液为还原剂的选择性非催化还原装置
KR102442108B1 (ko) * 2022-01-10 2022-09-14 주식회사 크린어스 디젤엔진 배기가스 저감시스템 및 동작 방법
CN116357432A (zh) * 2023-03-31 2023-06-30 山东科技大学 基于旋流结构的煤矿井下柴油车尾气后处理装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119959480A (zh) * 2025-02-10 2025-05-09 蒙城县方正机动车安全技术检测有限公司 一种车辆尾气检测装置
CN121111342A (zh) * 2025-11-14 2025-12-12 中国矿业大学 一种煤矿井下通风风量确定方法、系统、设备及介质

Also Published As

Publication number Publication date
CN116357432B (zh) 2025-03-25
CN116357432A (zh) 2023-06-30

Similar Documents

Publication Publication Date Title
WO2024198519A1 (zh) 基于旋流结构的煤矿井下柴油车尾气后处理装置
CN105289301B (zh) 一种双旋式scr脱硝方法及其装置
CN108412593A (zh) 一种并联筒式后处理结构总成
CN105673159A (zh) 一种发动机排气系统及使用该排气系统的发动机
CN107191251A (zh) 一种满足国六排放的柴油机后处理系统
CN105716100A (zh) 一种脱硝省煤器高温旁路装置
CN108837686A (zh) 一种适用于船舶废气脱硫的高效洗涤塔系统及方法
CN207076339U (zh) 一体式选择性催化还原脱硝装置
CN113522012B (zh) 烟气脱硝喷氨混合系统及其静态混合器和喷氨控制方法
CN216342391U (zh) 利用液氨为sdpf还原剂的非道路柴油机用尾气后处理装置
CN202860407U (zh) 一种全混合式喷氨元件
CN109296426A (zh) 一种发电机组尾气净化系统
CN205886603U (zh) 整流混流式scr脱硝氨喷射系统
US12085004B1 (en) Swirl structure-based exhaust aftertreatment device for underground mining diesel vehicle
CN205145982U (zh) 一种双旋式scr脱硝装置
CN205886604U (zh) 带有椭圆盘混流器的scr脱硝氨喷射系统
CN114263519A (zh) 用于排气后处理系统的混合器
CN109351181B (zh) 一种集成式宽温scr烟气脱硝的方法及系统
CN217410314U (zh) 烟气全工况干法脱硫联合催化滤袋除尘-scr脱硝系统
CN216062677U (zh) 一种利用尿素直喷热解喷射装置脱除so3的装置
CN215842431U (zh) 一种烟道型气体混合反应器
CN210799099U (zh) 一种螺旋式柴油机尾气净化装置
CN215233233U (zh) 一种烟囱式脱硫脱硝除尘集成装置
CN205055823U (zh) 一种应用在燃煤电厂烟气中的喷氨预除尘装置
CN208911824U (zh) 一种集成式宽温scr烟气脱硝的系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23930084

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 23930084

Country of ref document: EP

Kind code of ref document: A1