CN110394016B - Tempering and modifying system and method for sintering flue gas particles - Google Patents
Tempering and modifying system and method for sintering flue gas particles Download PDFInfo
- Publication number
- CN110394016B CN110394016B CN201910707043.6A CN201910707043A CN110394016B CN 110394016 B CN110394016 B CN 110394016B CN 201910707043 A CN201910707043 A CN 201910707043A CN 110394016 B CN110394016 B CN 110394016B
- Authority
- CN
- China
- Prior art keywords
- flue gas
- agent
- tempering
- modifying
- sintering flue
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8696—Controlling the catalytic process
-
- 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
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
Abstract
The invention discloses a system and a method for modifying sintered smoke particles through tempering, which comprises a tempering agent storage bin, a tempering agent conveying fan, a feeder, a gas-solid mixer, a tempering agent distributor and a tempering agent injection spray gun, wherein the tempering agent is stored in the tempering agent storage bin, the outlet of the tempering agent storage bin is connected with the feeder, the outlet of the feeder is connected with the gas-solid mixer, the conveying fan provides wind required by the dilute phase conveying of the tempering agent, and the wind and the tempering agent are uniformly mixed in the gas-solid mixer and are connected with the tempering agent distributor through a pipeline; the modifying agent distributor distributes modifying agents to the injection spray gun according to the proportion requirement, and the injection spray gun injects modifying agents into flue gas to complete the mixing process. The invention solves the problems that smoke dust in sintering flue gas is fused and bonded at high temperature to block a catalyst, ensures the safe and stable operation of a sintering flue gas SCR denitration system, ensures the denitration efficiency of SCR, ensures the safe and stable operation of a sintering machine system, and ensures that NOx in the sintering flue gas reaches the emission standard required by environmental protection departments.
Description
Technical Field
The invention relates to the technical field of sintering flue gas treatment in the steel industry, in particular to a system and a method for quenching and tempering modification of sintering flue gas particles.
Background
At present, steel enterprises in China face severe problems of excess capacity, insufficient innovation, continuously strengthened environmental energy constraint and the like. In order to respond to the national environmental protection requirement, various steel enterprises treat the sintering flue gas following the national requirement.
The mainstream process for denitration of sintering flue gas adopts an SCR (selective catalytic reduction) denitration process, because the temperature of the sintering flue gas is low and cannot meet the temperature requirement of SCR denitration, the flue gas needs to be heated to 260-320 ℃, because a large amount of alkali metal substances such as Na +, K + and the like contained in the sintering flue gas are melted at high temperature at the temperature, smoke dust is bonded and bridged, dust is adhered to the surface of a catalyst and blocks holes of the catalyst, the resistance of the flue gas is increased, the normal operation of a system is influenced, the emission of pollutants is increased, and the environmental pollution is increased.
The denitration of sintering flue gas is just started at home, and only a few sintering flue gas denitration treatments are performed worldwide, so that the denitration of sintering flue gas is in an exploration stage and no mature technical experience is referred to. National policies require that denitration of sintering flue gas must be carried out, and under the background, only a flue gas denitration technology of a power plant can be introduced, but because characteristics of two flue gas particles of flue gas denitration of the power plant and sintering flue gas denitration of an iron and steel plant are greatly different, the problems of frequent blockage and the like occur after the iron and steel plant adopts the flue gas denitration technology and sintering flue gas denitration is built and operated, and the denitration efficiency and the safe and stable operation of a sintering machine are seriously influenced.
In the prior art, measures such as interception, increase of blowing strength and the like are taken to achieve a certain effect on the blockage of the catalyst, but the effect is very little, and the blockage problem cannot be solved fundamentally. In addition, purely mechanical measures cannot solve the problem of sticking and blocking.
According to the invention, the problem of catalyst blockage in the sintering flue gas heating SCR process is fundamentally solved through a sintering flue gas particulate matter tempering and modifying system and process.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a system and a method for modifying and tempering sintered flue gas particles. According to the invention, the flue gas conditioning agent is added into the sintering flue gas, so that the characteristic that dust in the sintering flue gas is easy to agglomerate in a heating SCR system to block the catalyst is changed, the problems that the dust in the sintering flue gas is fused and bonded at high temperature and blocks the catalyst are effectively solved, the safe and stable operation of a sintering flue gas SCR denitration system is ensured, the denitration efficiency of the SCR is ensured, the environmental pollution is reduced, the safe and stable operation of a sintering machine system is ensured, and the NOx in the sintering flue gas reaches the emission standard required by an environmental protection department.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a system for modifying and tempering sintered flue gas particles comprises a modifying agent storage bin, a modifying agent conveying fan, a feeder, a gas-solid mixer, a modifying agent distributor and a modifying agent injection spray gun; the device comprises a conditioning agent storage bin, a feeding machine, a gas-solid mixer, a conveying fan, a conditioning agent distributor, a gas-solid mixer, a conveying fan, a gas-solid mixer and a conditioning agent distributor, wherein the conditioning agent is stored in the conditioning agent storage bin, an outlet of the conditioning agent storage bin is connected with an inlet of the feeding machine, an outlet of the feeding machine is connected with the gas-solid mixer, the conveying fan is connected with the gas-solid mixer to provide wind required for dilute phase conveying of the conditioning agent for; the conditioner distributor is connected with the conditioner injection spray gun, the conditioner is distributed to the conditioner injection spray gun according to the proportion requirement, the conditioner injection spray gun injects the conditioner into the sintering flue gas pipeline, the mixing process of the flue gas and the conditioner is completed in the sintering flue gas pipeline, and then the flue gas and the conditioner enter the sintering flue gas SCR system.
The feeder feeds materials in a quantitative metering mode.
And a hardening and tempering agent fluidization and vibration device is arranged on the hardening and tempering agent storage bin. Prevent the hardening and tempering agent from flowing unsmoothly in a storage bin.
The tempering agent is conveyed by adopting pneumatic dilute phase.
And the hardening and tempering agent injection spray gun is provided with a compressed air interface, and is connected with external compressed air through the compressed air interface. The mixing effect of the modifying agent and the smoke is strengthened.
And a secondary uniform mixing device is arranged in the sintering flue gas pipeline at the rear side of the quenching and tempering agent injection spray gun. Further enhancing the mixing effect of the modifying agent and the flue gas.
The modifying agent is a mixture of silicon dioxide, calcium oxide, calcium carbonate, magnesium oxide, aluminum oxide and ferric oxide.
The quality components of the conditioning agent are as follows: 8-38% of silicon dioxide, 6-35% of calcium oxide, 7-38% of calcium carbonate, 5-10% of magnesium oxide, 3-20% of aluminum oxide and 5-10% of ferric oxide, wherein the total mass ratio of the silicon dioxide, the calcium oxide and the calcium carbonate in the mixture is not less than 70%. Through the even mixing contact of the conditioning agent and the particulate matter in the flue gas, the physicochemical property of the particulate matter in the flue gas can be changed, the fluidity of the particulate matter which is bridged by the original bonding is good, the particulate matter is not bonded and adhered, and the particulate matter can easily pass through the holes of the catalyst, so that the problems that the particulate matter blocks the catalyst, and the catalyst is inactivated to reduce the denitration efficiency are avoided.
A quenching and tempering modification method for sintering flue gas particles comprises the following steps: the method comprises the steps of providing a tempering agent for a gas-solid mixer through a feeder, providing wind required for dilute phase conveying of the tempering agent for the gas-solid mixer through a conveying fan, uniformly mixing the wind and the tempering agent in the gas-solid mixer, conveying the mixture to a tempering agent distributor through a pipeline, injecting the tempering agent distributor into a spray gun through the pipeline and the tempering agent to spray to a sintering flue gas pipeline, completing the mixing process of flue gas and the tempering agent in the sintering flue gas pipeline, and then entering a sintering flue gas SCR system.
The beneficial effects of the technical process of the invention are as follows:
1. by adding the flue gas conditioning agent into the sintering flue gas, the characteristic that dust in the sintering flue gas is easy to agglomerate in a heating SCR system to block a catalyst is changed, the problem that the dust in the sintering flue gas is fused and bonded at high temperature to block the catalyst is effectively solved, the safe and stable operation of a sintering flue gas SCR denitration system is ensured, and the safe and stable operation of a sintering machine system is further ensured.
2. The conditioner fluidization and vibration device is arranged on the conditioner storage bin, so that the conditioner can be effectively prevented from flowing unsmoothly in the storage bin.
3. The mixing effect of the modifying agent and the flue gas is enhanced by arranging the compressed air interface on the modifying agent injection spray gun and connecting the compressed air to the outside through the compressed air interface.
4. The secondary uniform mixing device is arranged in the sintering flue gas pipeline at the rear side of the tempering agent injection spray gun, so that the mixing effect of the tempering agent and the flue gas is further enhanced.
5. By adopting the conditioner, 8-38% of silicon dioxide, 6-35% of calcium oxide, 7-38% of calcium carbonate, 5-10% of magnesium oxide, 3-20% of aluminum oxide and 5-10% of ferric oxide are adopted, wherein the total mass ratio of the silicon dioxide, the calcium oxide and the calcium carbonate in the mixture is not less than 70%. The uniform mixing and contact of the conditioning agent and the particles in the flue gas are realized, the physicochemical properties of the particles in the flue gas are changed, the particles are good in mobility due to the original bonding bridging change, are not bonded and adhered, and can easily pass through the holes of the catalyst, so that the problems that the particles block the catalyst, the catalyst is inactivated, and the denitration efficiency is reduced are solved.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
In the figure: 1. a conditioner storage bin, 2 a conditioner conveying fan, 3 a conditioner feeder, 4 a gas-solid mixer, 5 a conditioner distributor, 6 a conditioner injection spray gun and 7 a sintering flue gas flue.
Detailed Description
The features and principles of the present invention will be described in detail below with reference to the accompanying drawings, which illustrate embodiments of the invention and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the system for modifying and tempering sintering flue gas particles is connected with a sintering flue gas pipeline connected with a sintering flue gas SCR system, and is applied to the upstream of the sintering flue gas SCR system, and comprises a modifying agent storage bin 1, a modifying agent conveying fan 2, a feeder 3, a gas-solid mixer 4, a modifying agent distributor 5 and a modifying agent injection spray gun 6; the conditioning agent is stored in a conditioning agent storage bin 1, an outlet of the conditioning agent storage bin 1 is connected with an inlet of a feeder 3, an outlet of the feeder 3 is connected with a gas-solid mixer 4, a conveying fan 2 is connected with the gas-solid mixer 4 to provide air required by dilute phase conveying of the conditioning agent for the gas-solid mixer 4, the air and the conditioning agent are uniformly mixed in the gas-solid mixer 4, and the gas-solid mixer 4 is connected with a conditioning agent distributor 5 through a pipeline; the modifying agent distributor 5 is connected with the modifying agent injection spray gun 6, the modifying agent is distributed to the modifying agent injection spray gun 6 according to the proportion requirement, the modifying agent injection spray gun 6 injects the modifying agent into the sintering flue gas pipeline, the mixing process of the flue gas and the modifying agent is completed in the sintering flue gas pipeline, and then the flue gas enters the sintering flue gas SCR system.
The invention effectively solves the problems that smoke dust in sintering flue gas is fused and bonded at high temperature to block a catalyst, and simultaneously ensures the safe and stable operation of a sintering flue gas SCR denitration system, the denitration efficiency of SCR and the safe and stable operation of a sintering machine system.
Further, the feeder 3 feeds materials in a quantitative metering mode.
Furthermore, a hardening and tempering agent fluidization and vibration device is arranged on the hardening and tempering agent storage bin 1, so that the hardening and tempering agent is prevented from flowing unsmoothly in the storage bin.
Furthermore, the tempering agent is conveyed by adopting pneumatic dilute phase.
Furthermore, a compressed air interface is arranged on the hardening and tempering agent injection spray gun 6, and the hardening and tempering agent is connected with external compressed air through the compressed air interface, so that the mixing effect of the hardening and tempering agent and the flue gas is enhanced.
Furthermore, a secondary uniform mixing device is arranged in the sintering flue gas pipeline at the rear side of the tempering agent injection spray gun 6, so that the mixing effect of the tempering agent and the flue gas is further enhanced.
Example 2
The modifier is a mixture of silicon dioxide, calcium oxide, calcium carbonate, magnesium oxide, aluminum oxide and iron oxide, and comprises the following components in parts by mass: 8-38% of silicon dioxide, 6-35% of calcium oxide, 7-38% of calcium carbonate, 5-10% of magnesium oxide, 3-20% of aluminum oxide and 5-10% of ferric oxide, wherein the total mass ratio of the silicon dioxide, the calcium oxide and the calcium carbonate in the mixture is not less than 70%.
Example 3
The quality components of the conditioning agent are as follows: 8% of silicon dioxide, 30% of calcium oxide, 38% of calcium carbonate, 5% of magnesium oxide, 9% of aluminum oxide and 10% of ferric oxide.
Example 4
The quality components of the conditioning agent are as follows: 38% of silicon dioxide, 26% of calcium oxide, 7% of calcium carbonate, 10% of magnesium oxide, 14% of aluminum oxide and 5% of ferric oxide.
Example 5
The quality components of the conditioning agent are as follows: 37% of silicon dioxide, 6% of calcium oxide, 37% of calcium carbonate, 8% of magnesium oxide, 3% of aluminum oxide and 9% of ferric oxide.
Example 6
The quality components of the conditioning agent are as follows: 20% of silicon dioxide, 35% of calcium oxide, 15% of calcium carbonate, 5% of magnesium oxide, 20% of aluminum oxide and 5% of ferric oxide.
The test result shows that the catalyst is gradually blocked and the pressure difference is increased within about 10 days before the modifying agent is used, the catalyst has no blocking problem after the modifying agent is used, the pressure difference of the denitration catalyst is stable, and the system stably runs for more than 1 month without any blocking phenomenon.
Example 7
A quenching and tempering modification process for sintering flue gas particles comprises the following steps: the air-solid mixer 4 is supplied with the modifying agent through the feeder 3, the air-solid mixer 4 is supplied with air required by dilute phase conveying of the modifying agent through the conveying fan 2, the air and the modifying agent are uniformly mixed in the air-solid mixer 4, the mixture is conveyed to the modifying agent distributor 5 through a pipeline, then the modifying agent distributor 5 is injected into a sintering flue gas pipeline through a pipeline and a modifying agent injection spray gun 6, the mixing process of flue gas and the modifying agent is completed in the sintering flue gas pipeline, and then the flue gas and the modifying agent enter a sintering flue gas SCR system. The conditioning process is applied to the upstream of the SCR system catalyst.
The conditioning and modifying system and the process for the sintering flue gas particles can effectively change the melting and bonding characteristics of alkali metal substances such as Na +, K + and the like in the sintering flue gas at high temperature, the smoke and dust has good fluidity when being bridged from the original bonding, is not bonded and adhered, and can easily pass through holes of a catalyst, so that the problems that the catalyst is blocked by the smoke and dust, the denitration efficiency is reduced due to the inactivation of the catalyst are solved, and the normal and efficient operation of an SCR (selective catalytic reduction) denitration system and a sintering machine system of the sintering flue gas is ensured.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the present invention by those skilled in the art without departing from the spirit of the present invention are intended to be covered by the protection scope defined by the claims of the present invention.
Claims (3)
1. A system for modifying and tempering sintered flue gas particles is characterized by comprising a modifying agent storage bin, a modifying agent conveying fan, a feeding machine, a gas-solid mixer, a modifying agent distributor and a modifying agent injection spray gun; the device comprises a conditioning agent storage bin, a feeding machine, a gas-solid mixer, a conveying fan, a conditioning agent distributor, a gas-solid mixer, a conveying fan, a gas-solid mixer and a conditioning agent distributor, wherein the conditioning agent is stored in the conditioning agent storage bin, an outlet of the conditioning agent storage bin is connected with an inlet of the feeding machine, an outlet of the feeding machine is connected with the gas-solid mixer, the conveying fan is connected with the gas-solid mixer to provide wind required for dilute phase conveying of the conditioning agent for; the modifying agent distributor is connected with a modifying agent injection spray gun, the modifying agent is distributed to the modifying agent injection spray gun according to the proportion requirement, the modifying agent injection spray gun injects the modifying agent into the sintering flue gas pipeline, the mixing process of the flue gas and the modifying agent is completed in the sintering flue gas pipeline, and then the flue gas enters the sintering flue gas SCR system;
the conditioner storage bin is provided with a conditioner fluidization and vibration device;
the hardening and tempering agent injection spray gun is provided with a compressed air interface, and the hardening and tempering agent injection spray gun is connected with external compressed air through the compressed air interface;
a secondary uniform mixing device is arranged in a sintering flue gas pipeline at the rear side of the quenching and tempering agent injection spray gun;
the modifying agent is a mixture of silicon dioxide, calcium oxide, calcium carbonate, magnesium oxide, aluminum oxide and ferric oxide;
the quality components of the conditioning agent are as follows: 8-38% of silicon dioxide, 6-35% of calcium oxide, 7-38% of calcium carbonate, 5-10% of magnesium oxide, 3-20% of aluminum oxide and 5-10% of ferric oxide, wherein the total mass ratio of the silicon dioxide, the calcium oxide and the calcium carbonate in the mixture is not less than 70%;
the using method comprises the following steps:
the method comprises the steps of providing a tempering agent for a gas-solid mixer through a feeder, providing wind required for dilute phase conveying of the tempering agent for the gas-solid mixer through a conveying fan, uniformly mixing the wind and the tempering agent in the gas-solid mixer, conveying the mixture to a tempering agent distributor through a pipeline, injecting the tempering agent distributor into a spray gun through the pipeline and the tempering agent to spray the mixture to a sintering flue gas pipeline, completing the mixing process of flue gas and the tempering agent in the sintering flue gas pipeline, and then entering a sintering flue gas SCR system; the conditioning process is applied to the upstream of the SCR system catalyst.
2. The system for modifying and tempering sintering flue gas particulate matter of claim 1, wherein the feeder feeds the particulate matter in a quantitative metering manner.
3. The system for modifying and conditioning sintering flue gas particulate matter of claim 1, wherein the conditioning agent delivery is pneumatic dilute phase delivery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910707043.6A CN110394016B (en) | 2019-08-01 | 2019-08-01 | Tempering and modifying system and method for sintering flue gas particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910707043.6A CN110394016B (en) | 2019-08-01 | 2019-08-01 | Tempering and modifying system and method for sintering flue gas particles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110394016A CN110394016A (en) | 2019-11-01 |
| CN110394016B true CN110394016B (en) | 2020-09-22 |
Family
ID=68327078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910707043.6A Active CN110394016B (en) | 2019-08-01 | 2019-08-01 | Tempering and modifying system and method for sintering flue gas particles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110394016B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111068485A (en) * | 2019-12-25 | 2020-04-28 | 天津天钢联合特钢有限公司 | Method for preventing denitration catalyst from being blocked |
| CN111068516B (en) * | 2020-01-18 | 2023-11-14 | 浙江大学 | System and method for preventing deposition of high-viscosity ash on surface of catalyst through multi-element reinforced coupling intelligent regulation and control |
| CN113441000B (en) * | 2020-03-27 | 2023-07-18 | 上海梅山钢铁股份有限公司 | Low-cost sintering flue gas denitration device and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103120898A (en) * | 2012-12-28 | 2013-05-29 | 江苏科行环境工程技术有限公司 | Process device for reducing selective catalytic reduction (SCR) catalyst poisoning |
| CN203598689U (en) * | 2013-11-08 | 2014-05-21 | 深圳市凯盛科技工程有限公司 | Flue gas conditioning powder quantifying, metering and feeding device in flue gas denitration project |
| CN103693844A (en) * | 2013-12-26 | 2014-04-02 | 江苏科行环境工程技术有限公司 | Pretreatment process system and device for glass kiln flue gas denitrification |
| CN105749679B (en) * | 2016-03-23 | 2018-08-28 | 航天凯天环保科技股份有限公司 | A kind of high temperature fume dust removal method and system |
| CN108854477A (en) * | 2018-07-05 | 2018-11-23 | 江苏中建材环保研究院有限公司 | A kind of compound desulphurization denitration dust removal integrated plant of glass furnace fume high-temperature and method |
-
2019
- 2019-08-01 CN CN201910707043.6A patent/CN110394016B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110394016A (en) | 2019-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110394016B (en) | Tempering and modifying system and method for sintering flue gas particles | |
| KR102488023B1 (en) | Iron ore microwave sintering method | |
| CN110026077A (en) | A kind of denitrfying agent, preparation method and Dry denitration method | |
| CN103344114B (en) | A kind of novel energy-saving emission-reducing sintering machine system and sintering method | |
| CN109141028A (en) | The low NO of grate-kiln pelletizingxProcess units and Pellet production method | |
| CN109316892A (en) | A kind of denitrfying agent, preparation method and Dry denitration method | |
| CN203316010U (en) | Flue gas denitration system with SCR and SNCR coupled | |
| CN204436541U (en) | A kind of diesel engine selective catalytic reduction after-treatment device | |
| CN208911794U (en) | Dry denitration and selective non-catalytic reduction denitrating system | |
| CN102861505B (en) | A kind of energy-efficient denitrating system | |
| CN212523654U (en) | System for be used for independent heat source grinding system tail gas denitration | |
| CN204412055U (en) | A kind of dore furnace flue gas SNCR denitration device reducing agent high-efficiency atomizer | |
| CN209714708U (en) | A kind of dry method denitration of boiler smoke device | |
| CN204543995U (en) | A kind of cement kiln end low-temperature smoke air SCR denitrification apparatus | |
| CN110141944A (en) | A kind of SNCR and PNCR synergistic combinations denitrating system and denitration method for flue gas for High-temp. kiln | |
| CN114682065B (en) | Denitration agent for intelligent active amino reduction denitration and method for denitration of kiln tail flue gas | |
| CN112961707B (en) | Fly ash furnace returning device, coal catalytic gasification system and fly ash furnace returning method | |
| CN114061320B (en) | Grate-rotary kiln-circular cooler pellet smoke circulation coupling treatment system and smoke treatment process thereof | |
| CN114061321B (en) | Pellet flue gas treatment system based on rotary kiln primary circulation air inlet and flue gas treatment process thereof | |
| CN210495849U (en) | SNCR and PNCR collaborative combined denitration system for high-temperature furnace | |
| CN208703909U (en) | A kind of PNCR boiler smoke abatement equipment | |
| CN207970688U (en) | A kind of Industrial Stoves denitration modernization system | |
| CN109468455A (en) | A kind of sintering process NOx abatement method and apparatus | |
| CN111686570A (en) | System and method for tail gas denitration of independent heat source grinding system | |
| CN113877409A (en) | High-temperature flue gas treatment system and method for grate-kiln oxidized pellets |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20191101 Assignee: Hegang Technology Co.,Ltd. Assignor: SHANDONG GUOSHUN CONSTRUCTION GROUP Co.,Ltd. Contract record no.: X2022980017203 Denomination of invention: System and method of sintering flue gas particle conditioning and modification Granted publication date: 20200922 License type: Common License Record date: 20221009 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20191101 Assignee: Qingdao Haina chemical environmental protection equipment Co.,Ltd. Assignor: SHANDONG GUOSHUN CONSTRUCTION GROUP Co.,Ltd. Contract record no.: X2022980018883 Denomination of invention: System and method of sintering flue gas particle conditioning and modification Granted publication date: 20200922 License type: Common License Record date: 20221019 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: System and method of sintering flue gas particle conditioning and modification Effective date of registration: 20221228 Granted publication date: 20200922 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Changqing branch Pledgor: SHANDONG GUOSHUN CONSTRUCTION GROUP Co.,Ltd. Registration number: Y2022980029384 |