CN111036068A - Flue injection SO of mobile alkaline adsorbent3Removal system - Google Patents

Flue injection SO of mobile alkaline adsorbent3Removal system Download PDF

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Publication number
CN111036068A
CN111036068A CN201911163104.3A CN201911163104A CN111036068A CN 111036068 A CN111036068 A CN 111036068A CN 201911163104 A CN201911163104 A CN 201911163104A CN 111036068 A CN111036068 A CN 111036068A
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China
Prior art keywords
feeding
pneumatic
pipeline
conveying
flue
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Pending
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CN201911163104.3A
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Chinese (zh)
Inventor
胡冬
赵柄
郭婷婷
王海刚
金绪良
王鹤麒
张猛
王涵
杨超
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Thermal Power Generation Technology Research Institute of China Datang Corporation Science and Technology Research Institute Co Ltd
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Thermal Power Generation Technology Research Institute of China Datang Corporation Science and Technology Research Institute Co Ltd
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Application filed by Thermal Power Generation Technology Research Institute of China Datang Corporation Science and Technology Research Institute Co Ltd filed Critical Thermal Power Generation Technology Research Institute of China Datang Corporation Science and Technology Research Institute Co Ltd
Priority to CN201911163104.3A priority Critical patent/CN111036068A/en
Publication of CN111036068A publication Critical patent/CN111036068A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81—Solid phase processes
    • B01D53/83—Solid phase processes with moving reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/508—Sulfur oxides by treating the gases with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention relates to a flue injection SO of a mobile alkaline adsorbent3The removal system comprises a mobile vehicle and an on-site auxiliary system; the mobile vehicle is provided with a storage tank for storing the alkaline adsorbent, and the storage tank is a conical hopper with a downward conical angle; the bottom of the storage tank is connected with a feeding boot through a pneumatic feeder; the feeding shoe is connected with a conveying pipeline for connecting to a common parking point and a Roots blower for providing power for conveying powder; the auxiliary system comprises a conveying system, a line concentration box, an adsorption dryer and a dry powder feeding station, wherein the conveying system comprises a material conveying pipeline, one end of the material conveying pipeline is used for being connected with a conveying pipeline of a feeding boot, the other end of the material conveying pipeline is connected with an injection pipeline, and the injection pipeline is connected with a plurality of spray guns in a flue through a distributor; the adsorption dryer is connected with an air source and used for providing dry compressed air; the dry powder feeding station is connected with the storage tank through a feeding pipeline and is used for feeding materials into the storage bin. Book (I)The invention realizes the removal of SO3The alkaline sorbent is injected through a moving flue.

Description

Flue injection SO of mobile alkaline adsorbent3Removal system
Technical Field
The invention belongs to the technical field of coal-fired flue gas pollutant control, and particularly relates to a flue injection SO of a mobile alkaline adsorbent3And (4) a removal system.
Background
After the ultra-low emission reconstruction of the coal-fired power plant, the emission of the conventional pollutants such as nitrogen oxide, sulfur dioxide and the like reaches the ultra-low standard, and SO in the coal-fired flue gas2Can be converted into SO in the coal combustion and SCR denitration processes3，SO3Can cause the problems of air preheater blockage, equipment corrosion, denitration SCR low-load exit, blue smoke plume and the like, and increase SO for people3Concern over hazards.
At present, SO3The control technology mainly comprises the steps of co-burning low-sulfur coal and developing low SO2/SO3The conversion rate of the catalyst, the physical removal of SO by adopting a low-temperature electric precipitator and a wet-type electric precipitator and the like3Has low removal effect and is difficult to realize SO3And (4) removing the source. Patent No. 201120223113.X discloses a sulfur trioxide tail gas absorption device, and the device can not realize SO3Removing the source of the system; patent No. 201310044506.8X discloses SO of a trona slurry3The removal device is complex in implementation form and easily influences the boiler efficiency of a coal-fired power plant; patent No. 201610202418.X discloses a dry powder adsorbent flue injection for SO removal3The device is a fixed SO3Removing deviceOne set of device can only be used by one machine set, and the flexibility is lacked.
Disclosure of Invention
The invention aims to provide a flue injection SO of a mobile alkaline adsorbent3A removal system to solve the technical problems.
The invention provides a flue injection SO of a movable alkaline adsorbent3The removal system comprises a mobile vehicle and an on-site auxiliary system;
the mobile vehicle is provided with a storage tank for storing the alkaline adsorbent, and the storage tank is a conical hopper with a downward conical angle; the bottom of the storage tank is connected with a feeding boot through a pneumatic feeder and is used for conveying powder to the feeding boot through the pneumatic feeder; the feeding shoe is connected with a conveying pipeline for connecting to a common parking point and a Roots blower for providing power for conveying powder;
the on-site auxiliary system comprises a conveying system, a line concentration box, an adsorption dryer and a dry powder feeding station, wherein the conveying system comprises a material conveying pipeline, one end of the material conveying pipeline is connected with a conveying pipeline of the feeding boot, the other end of the material conveying pipeline is connected with an injection pipeline, and the injection pipeline is connected with a plurality of spray guns in a flue through a distributor; the adsorption dryer is connected with an air source and is used for providing dry compressed air; the dry powder feeding station is connected with the storage tank through a feeding pipeline and is used for feeding materials into the storage bin.
Further, storage tank top is equipped with feed inlet, gas vent, filter dust remover and radar charge level indicator, filter dust remover and pneumatic pipeline link to each other, the last first pneumatic solenoid valve that is equipped with of pneumatic pipeline, first pneumatic solenoid valve passes through pneumatic pipeline and links to each other with first air supply, first air supply with the adsorption dryer is connected.
Furthermore, a compressed air interface is reserved in the pneumatic feeder and connected with a second pneumatic electromagnetic valve, the second pneumatic electromagnetic valve is connected with a second air source through a pneumatic pipeline, and the second air source is connected with the adsorption dryer.
Furthermore, a blanking baffle door is arranged between the pneumatic feeder and the feeding shoe, the pneumatic feeder is connected with the blanking baffle door, the blanking baffle door is connected with a feeding rotary valve for feeding, the outlet of the feeding rotary valve is connected with a conveying rotary valve for conveying materials, the outlet of the conveying rotary valve is connected with the top of the feeding shoe, the conveying rotary valve uses compressed air as shaft seal gas, a third pneumatic electromagnetic valve is connected to the sealing pipe of the conveying rotary valve, the third pneumatic electromagnetic valve is connected with a third gas source through a pneumatic pipeline, and the third gas source is connected with the adsorption dryer.
And furthermore, four carbon steel weighing modules are arranged on the moving vehicle and used for controlling the quality of feeding and discharging by controlling the quality of the material powder in the material storage tank.
Further, the storage tank is connected with a lifting support and used for erecting or horizontally placing the storage tank and the conveying rotary valve on the moving vehicle through the lifting support.
Furthermore, a PLC control system is arranged on the moving vehicle and used for controlling the operation of the electric equipment on the moving vehicle.
Furthermore, a conveying pipeline in the on-site auxiliary system is connected with a conveying pipeline on the moving vehicle through a flange.
Further, dry powder feed station includes the dry powder storehouse, dry powder storehouse top is equipped with feed inlet, gas vent, feed bin filter dust remover and radar charge level indicator, the bottom of dry powder storehouse is connected with feed bin pneumatic feeder, the pneumatic feeder export of feed bin is equipped with feed bin blanking baffle door and is connected with the feed bin pump, feed bin pump top is equipped with the charge level indicator, feed bin pump bottom is connected with defeated material baffle door, defeated material baffle door connection feed line, feed line connection has the compressed air buffer tank, feed bin filter dust remover and feed bin pneumatic feeder link to each other with fourth pneumatic solenoid valve, fifth pneumatic solenoid valve through pneumatic pipeline respectively, fourth solenoid valve and fifth solenoid valve with the compressed air buffer tank is connected.
By the scheme, the alkali is movedFlue injection of SO with sorbent3The removal system can flexibly carry out the flue gas SO on a plurality of units in the coal-fired power plant by using one or a plurality of moving vehicles according to the start and stop conditions of the units in the coal-fired power plant3And the removal increases the utilization rate of the equipment. The dry powder feeding station provided by the invention is used as the feeding guarantee of the moving vehicle, and the powder is conveyed into the storage tank of the moving vehicle by using compressed air. The rotary valve of the invention can be used for controlling the injection amount of powder, SO that the sprayed adsorbent and SO in the flue gas3Match and ensure SO3The removal efficiency of (2). Therefore, the flue of the mobile alkaline adsorbent of the invention injects SO3The removal system has SO3High removal rate, high flexibility, high equipment utilization rate, equipment site saving, stable and reliable performance, and realization of SO of coal-fired unit3And (4) source removal.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 shows flue injected SO of a mobile alkaline adsorbent of the present invention3A schematic structural diagram of a removal system;
FIG. 2 is a side view of the locomotive of the present invention;
fig. 3 is a layout diagram of the equipment on the locomotive of the present invention.
Reference numbers in the figures:
1-moving the vehicle; 11-a material storage tank; 12-a pneumatic feeder; 13-a feeding shoe; 14-a transfer line; 15-lifting support;
21-a dry powder feed station; 22-dry powder bin; 23-compressed air buffer tank; 24-a feed line; 25-an injection line; 26-a dispenser; 27-a line concentration box; 28-adsorption dryer.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Refer to the drawings1-3, this example provides a mobile alkaline sorbent flue injected SO3The removal system comprises a mobile vehicle 1 and an on-site auxiliary system;
the mobile vehicle 1 is provided with a storage tank 11 for storing the alkaline adsorbent, and the storage tank 11 is a conical hopper with a downward conical angle; the bottom of the storage tank 11 is connected with a feeding shoe 13 through a pneumatic feeder 12 and is used for conveying powder to the feeding shoe 13 through the pneumatic feeder 12; the feeding boot 13 is in flange connection with a conveying pipeline 14 used for connecting to a common parking point and a Roots blower used for providing power for conveying powder;
the auxiliary system on site comprises a conveying system, a line concentration box 27, an adsorption dryer 28 and a dry powder feeding station 21, wherein the conveying system comprises a conveying pipeline, one end of the conveying pipeline is used for being connected with the conveying pipeline 14 of the feeding boot 13, the other end of the conveying pipeline is connected with an injection pipeline 25, and the injection pipeline 25 is connected with a plurality of spray guns positioned in a flue through a distributor 26; the adsorption dryer 28 is connected to a gas source for providing dry compressed air; the dry powder supply station 21 is connected to the storage tank 11 through a supply line 24 for supplying the storage silo 11 with dry powder.
In this embodiment, 11 tops of storage tank are equipped with feed inlet, gas vent, filter dust remover and radar charge level indicator, and filter dust remover links to each other with pneumatic line, is equipped with first pneumatic solenoid valve on the pneumatic line, and first pneumatic solenoid valve passes through pneumatic line and links to each other with first air supply, and first air supply is connected with absorption formula desiccator 28.
In this embodiment, the pneumatic feeder 12 is provided with a compressed air interface, the compressed air interface is connected to a second pneumatic solenoid valve, the second pneumatic solenoid valve is connected to a second air source through a pneumatic pipeline, and the second air source is connected to the adsorption dryer 28.
In this embodiment, be equipped with the blanking baffle door between pneumatic feeder 12 and the feed boots 13, pneumatic feeder 12 is connected with the blanking baffle door, the blanking baffle door is connected with the feed rotary valve that is used for the feed, feed rotary valve exit linkage has the transport rotary valve that is used for the defeated material, carry the rotary valve export and be connected with feed boots 13 top, it is gaseous as the bearing seal to carry the rotary valve to use compressed air, it is connected with the third pneumatic solenoid valve to carry rotary valve sealed tube department, the third pneumatic solenoid valve passes through pneumatic line and is connected with the third air supply, the third air supply is connected with absorption formula desiccator 28.
In this embodiment, the moving cart 1 is equipped with four carbon steel weighing modules for controlling the feeding and discharging quality by controlling the quality of the powder in the storage tank 11.
In the embodiment, the material storage tank 11 is connected to the lifting bracket 15, and the material storage tank 11 and the rotary conveying valve are erected or laid on the moving vehicle through the lifting bracket 15.
In this embodiment, the mobile cart 1 is provided with a PLC control system for controlling the operation of the electric device on the mobile cart 1.
In this embodiment, the delivery lines of the on-site auxiliary system are connected to the delivery lines 14 of the mobile carriage 1 via flanges.
In this embodiment, dry powder feed station 21 includes dry powder feed bin 22, dry powder feed bin 22 top is equipped with the feed inlet, the gas vent, feed bin filter dust remover and radar charge level indicator, dry powder feed bin 22's bottom is connected with feed bin pneumatic feeder, feed bin pneumatic feeder export is equipped with feed bin blanking baffle door and is connected with the feed bin pump, feed bin pump top is equipped with the charge level indicator, feed bin pump bottom is connected with defeated material baffle door, defeated material baffle door connects feed line 24, feed line 24 is connected with compressed air buffer tank 23, feed bin filter dust remover and feed bin pneumatic feeder are respectively through pneumatic pipeline and fourth pneumatic solenoid valve, fifth pneumatic solenoid valve links to each other, fourth solenoid valve and fifth solenoid valve are connected with the compressed air buffer tank.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (9)

1. Flue injection SO of mobile alkaline adsorbent3The removal system is characterized by comprising a mobile vehicle and an on-site auxiliary system;
the mobile vehicle is provided with a storage tank for storing the alkaline adsorbent, and the storage tank is a conical hopper with a downward conical angle; the bottom of the storage tank is connected with a feeding boot through a pneumatic feeder and is used for conveying powder to the feeding boot through the pneumatic feeder; the feeding shoe is connected with a conveying pipeline for connecting to a common parking point and a Roots blower for providing power for conveying powder;
the on-site auxiliary system comprises a conveying system, a line concentration box, an adsorption dryer and a dry powder feeding station, wherein the conveying system comprises a material conveying pipeline, one end of the material conveying pipeline is connected with a conveying pipeline of the feeding boot, the other end of the material conveying pipeline is connected with an injection pipeline, and the injection pipeline is connected with a plurality of spray guns in a flue through a distributor; the adsorption dryer is connected with an air source and is used for providing dry compressed air; the dry powder feeding station is connected with the storage tank through a feeding pipeline and is used for feeding materials into the storage bin.
2. The mobile alkaline sorbent flue of claim 1 injecting SO3Desorption system, its characterized in that, the storage tank top is equipped with feed inlet, gas vent, filters dust remover and radar charge level indicator, it links to each other with pneumatic pipeline to filter the dust remover, the last first pneumatic solenoid valve that is equipped with of pneumatic pipeline, first pneumatic solenoid valve passes through pneumatic pipeline and links to each other with first air supply, first air supply with the adsorption dryer is connected.
3. The mobile alkaline sorbent flue of claim 2 injecting SO3The desorption system is characterized in that a compressed air interface is reserved on the pneumatic feeder and connected with a second pneumatic electromagnetic valve, the second pneumatic electromagnetic valve is connected with a second air source through a pneumatic pipeline, and the second air source is connected with the adsorption dryer.
4. The mobile alkaline sorbent flue of claim 3 injecting SO3A stripping system, characterized in thatThe pneumatic conveying device comprises a pneumatic feeder, a feeding shoe, a feeding baffle door, a conveying rotary valve, a third pneumatic electromagnetic valve and an adsorption dryer, wherein the feeding baffle door is arranged between the pneumatic feeder and the feeding shoe, the pneumatic feeder is connected with the feeding baffle door, the feeding baffle door is connected with the feeding rotary valve used for feeding, the outlet of the feeding rotary valve is connected with the conveying rotary valve used for conveying materials, the outlet of the conveying rotary valve is connected with the top of the feeding shoe, the conveying rotary valve uses compressed air as shaft seal gas, the sealing pipe of the conveying rotary valve is connected with the third pneumatic electromagnetic valve, the third.
5. The mobile alkaline sorbent flue of claim 4 injecting SO3The removal system is characterized in that the moving vehicle is provided with four carbon steel weighing modules for controlling the quality of feeding and discharging by controlling the quality of the material powder in the material storage tank.
6. The mobile alkaline sorbent flue of claim 5 injecting SO3The removing system is characterized in that the storage tank is connected with the lifting support and used for enabling the storage tank and the conveying rotary valve to stand or horizontally place on the moving vehicle through the lifting support.
7. The mobile alkaline sorbent flue of claim 5 injecting SO3The removal system is characterized in that the mobile vehicle is provided with a PLC control system for controlling the operation of electric equipment on the mobile vehicle.
8. The mobile alkaline sorbent flue of claim 1 injecting SO3The removal system is characterized in that a conveying pipeline in the on-site auxiliary system is connected with a conveying pipeline on the moving vehicle through a flange.
9. The mobile alkaline sorbent flue of claim 1 injecting SO3Removal system, characterized in that the dry powder feeding station comprises dry powderThe bin, dry powder storehouse top is equipped with feed inlet, gas vent, feed bin filter dust remover and radar charge level indicator, the bottom of dry powder storehouse is connected with feed bin pneumatic feeder, the export of feed bin pneumatic feeder is equipped with feed bin blanking baffle door and is connected with the feed bin pump, feed bin pump top is equipped with the charge level indicator, feed bin pump bottom is connected with defeated material baffle door, defeated material baffle door connection feed pipeline, the feed pipeline is connected with the compressed air buffer tank, feed bin filter dust remover and feed bin pneumatic feeder link to each other with fourth pneumatic solenoid valve, fifth pneumatic solenoid valve through pneumatic pipeline respectively, fourth solenoid valve and fifth solenoid valve with the compressed air buffer tank is connected.
CN201911163104.3A 2019-11-25 2019-11-25 Flue injection SO of mobile alkaline adsorbent3Removal system Pending CN111036068A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113713602A (en) * 2021-09-09 2021-11-30 福建龙净脱硫脱硝工程有限公司 Integrated form flue sprays deacidification device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113713602A (en) * 2021-09-09 2021-11-30 福建龙净脱硫脱硝工程有限公司 Integrated form flue sprays deacidification device

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